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Hao H, Xu Y, Chen R, Qi S, Liu X, Lin B, Chen X, Zhang X, Yue L, Chen C. Protective effects of chlorogenic acid against cyclophosphamide induced liver injury in mice. Biotech Histochem 2024; 99:33-43. [PMID: 38018995 DOI: 10.1080/10520295.2023.2287452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2023] Open
Abstract
We investigated possible protective effects of chlorogenic acid (CGA) against cyclophosphamide (CP) induced hepatic injury in mice. We measured aminotransferase alanine transaminase (ALT) and aspartate transaminase (AST) levels in the serum. We assayed catalase (CAT), superoxide dismutase (SOD), reduced glutathione (GSH), glutathione peroxidase (GSH-Px) and malondialdehyde (MDA) in hepatic tissue. We assessed expression of nuclear transcription factor 2 (Nrf2) and Kelch sample related protein-1 (keap1) proteins in hepatic tissues using immunohistochemistry. The relative mRNA expression levels of heme oxygenase-1 (HO-1), NADH quinone oxidoreductase 1 (NQO1), tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) were determined using quantitative real-time polymerase chain reaction (qRT-PCR). Hematoxylin & eosin staining was used to assess liver histopathology. We found that administration of CGA prior to induction of injury by CP decreased serum ALT, AST and MDA expressions in hepatic tissue, while CAT, SOD, GSH and GSH-Px concentrations were increased. We found that hepatocytes of animals administered CGA gradually returned to normal morphology. CGA increased the protein expression of Nrf2 in murine hepatic tissue. Administration of CGA up-regulated mRNA expression levels of HO-1, NQO1, TNF-α and IL-6 in hepatic tissue. CGA exhibited a marked protective effect on CP induced liver injury in mice.
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Affiliation(s)
- Hao Hao
- Shaanxi Province Key Laboratory of Bio-Resources/QinLing-Bashan Mountains Bioresources Comprehensive Development C. I. C./Qinba State Key Laboratory of Biological Resources and Ecological Environment, Shaanxi University of Technology, Hanzhong, Shaanxi, China
| | - Youmei Xu
- Shaanxi Province Key Laboratory of Bio-Resources/QinLing-Bashan Mountains Bioresources Comprehensive Development C. I. C./Qinba State Key Laboratory of Biological Resources and Ecological Environment, Shaanxi University of Technology, Hanzhong, Shaanxi, China
| | - Rui Chen
- Shaanxi Province Key Laboratory of Bio-Resources/QinLing-Bashan Mountains Bioresources Comprehensive Development C. I. C./Qinba State Key Laboratory of Biological Resources and Ecological Environment, Shaanxi University of Technology, Hanzhong, Shaanxi, China
| | - Shanshan Qi
- Shaanxi Province Key Laboratory of Bio-Resources/QinLing-Bashan Mountains Bioresources Comprehensive Development C. I. C./Qinba State Key Laboratory of Biological Resources and Ecological Environment, Shaanxi University of Technology, Hanzhong, Shaanxi, China
| | - Xiang Liu
- Shaanxi Province Key Laboratory of Bio-Resources/QinLing-Bashan Mountains Bioresources Comprehensive Development C. I. C./Qinba State Key Laboratory of Biological Resources and Ecological Environment, Shaanxi University of Technology, Hanzhong, Shaanxi, China
| | - Beibei Lin
- Shaanxi Province Key Laboratory of Bio-Resources/QinLing-Bashan Mountains Bioresources Comprehensive Development C. I. C./Qinba State Key Laboratory of Biological Resources and Ecological Environment, Shaanxi University of Technology, Hanzhong, Shaanxi, China
| | - Xiaohua Chen
- Shaanxi Province Key Laboratory of Bio-Resources/QinLing-Bashan Mountains Bioresources Comprehensive Development C. I. C./Qinba State Key Laboratory of Biological Resources and Ecological Environment, Shaanxi University of Technology, Hanzhong, Shaanxi, China
| | - Xiaoying Zhang
- Shaanxi Province Key Laboratory of Bio-Resources/QinLing-Bashan Mountains Bioresources Comprehensive Development C. I. C./Qinba State Key Laboratory of Biological Resources and Ecological Environment, Shaanxi University of Technology, Hanzhong, Shaanxi, China
| | - Lijuan Yue
- Department of Oncology, Hanzhong Central Hospital, Hanzhong, Shaanxi, China
| | - Chen Chen
- Shaanxi Province Key Laboratory of Bio-Resources/QinLing-Bashan Mountains Bioresources Comprehensive Development C. I. C./Qinba State Key Laboratory of Biological Resources and Ecological Environment, Shaanxi University of Technology, Hanzhong, Shaanxi, China
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Peeler C, Pitzer CR, Paez HG, Criswell S. Histochemical and morphological evaluation of a glyoxal acid-free fixative. Biotech Histochem 2024; 99:49-58. [PMID: 38164087 DOI: 10.1080/10520295.2023.2300797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024] Open
Abstract
The application of most chemical fixatives, such as formalin, in the anatomic pathology laboratory requires safety training and hazardous chemical monitoring due to the toxicity and health risks associated with their use. Consequently, the use of formalin has been banned in most applications in Europe; the primary exception is its use in the histology laboratory in lieu of a suitable and safer alternative. Glyoxal based solutions, several of which are available commercially, are the most promising alternative fixatives, because they are based on a mechanism of fixation similar to that of formalin. Unlike formalin, however, glyoxal based solutions do not dissociate from water and therefore do not require ventilation measures such as a fume hood. A primary barrier to the adoption of commercially available glyoxal based solutions is their low pH, which can produce undesirable morphological and antigenic tissue alterations; however, a recently available neutral pH glyoxal product (glyoxal acid free) (GAF) has been developed to mitigate the challenges of low pH. We compared the morphology and histochemistry among tissues fixed in 10% neutral buffered formalin, a commercially available acidic glyoxal product (Prefer), and GAF. Tissues fixed in formalin and Prefer exhibited similar morphology and staining properties; tissues fixed with 2% GAF exhibited deleterious effects.
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Affiliation(s)
- Chelsea Peeler
- Department of Diagnostic and Health Sciences, College of Health Professions, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Christopher R Pitzer
- Department of Physiology, College of Graduate Health Sciences, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Hector G Paez
- Department of Physiology, College of Graduate Health Sciences, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Sheila Criswell
- Department of Diagnostic and Health Sciences, College of Health Professions, University of Tennessee Health Science Center, Memphis, TN, USA
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Ghani S, Alkhlaif Y, Mann J, Moncayo L, Ulker E, Caillaud M, Barik M, Ditre JW, Miles MF, Damaj MI. Surgical incision pain induced an increase in alcohol consumption in mice. Alcohol 2024; 117:1-9. [PMID: 38479450 DOI: 10.1016/j.alcohol.2024.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 03/03/2024] [Accepted: 03/08/2024] [Indexed: 03/25/2024]
Abstract
INTRODUCTION Large population-based studies have suggested a link between increased alcohol use and reduced pain. In addition, these studies suggest that higher levels of pain intensity are associated with an increase in alcohol consumption and rates of hazardous drinking which potentiates the risk of developing alcohol use disorders (AUD). The mechanisms and determinants of the alcohol-pain interaction can be studied in preclinical studies. METHODS The overall goal of this study is to use animal models to explore the impact of acute postoperative pain on alcohol intake. To achieve this, we characterized the timeline and levels of alcohol intake and preference in mice after laparotomy in the 2-bottle choice paradigm. RESULTS Our results show that laparotomy surgery increased alcohol intake and preference in male mice but not females in the 2-bottle choice and 3-bottle choice assays. In addition, ketoprofen administration blocked the increase in alcohol consumption in male mice after laparotomy. We also found that changes in alcohol initial sensitivity and acute functional tolerance, using loss of righting reflex (LORR) response, occur after surgery in mice. CONCLUSION Taken together, these findings suggests that sex, pain and alcohol sensitivity-related factors may modulate the relationship between alcohol consumption and pain.
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Affiliation(s)
- Sofia Ghani
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, USA
| | - Yasmin Alkhlaif
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, USA
| | - Jared Mann
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, USA
| | - Lauren Moncayo
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, USA
| | - Esad Ulker
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, USA
| | - Martial Caillaud
- Nantes Université, INSERM, UMR1235-TENS, The Enteric Nervous System in Gut and Brain Diseases, Nantes, France
| | - Mitali Barik
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, USA
| | - Joseph W Ditre
- Department of Psychology, Syracuse University, Syracuse, NY, USA
| | - Michael F Miles
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, USA
| | - M Imad Damaj
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, USA; Translational Research Initiative for Pain and Neuropathy, Virginia Commonwealth University, USA.
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Gaite JJ, Solé-Magdalena A, García-Mesa Y, Cuendias P, Martin-Cruces J, García-Suárez O, Cobo T, Vega JA, Martín-Biedma B. Immunolocalization of the mechanogated ion channels PIEZO1 and PIEZO2 in human and mouse dental pulp and periodontal ligament. Anat Rec (Hoboken) 2024; 307:1960-1968. [PMID: 37975162 DOI: 10.1002/ar.25351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 10/24/2023] [Accepted: 10/26/2023] [Indexed: 11/19/2023]
Abstract
PIEZO1 and PIEZO2 are essential components of mechanogated ion channels, which are required for mechanotransduction and biological processes associated with mechanical stimuli. There is evidence for the presence of PIEZO1 and PIEZO2 in teeth and periodontal ligaments, especially in cell lines and mice, but human studies are almost nonexistent. Decalcified permanent human teeth and mouse molars were processed for immunohistochemical detection of PIEZO1 and PIEZO2. Confocal laser microscopy was used to examine the co-localization of PIEZO 1 and PIEZO2 with vimentin (a marker of differentiated odontoblasts) in human teeth. In the outer layer of the human dental pulp, abundant PIEZO1- and PIEZO2-positive cells were found that had no odontoblast morphology and were vimentin-negative. Based on their morphology, location, and the absence of vimentin positivity, they were identified as dental pulp stem cells or pre-odontoblasts. However, in mice, PIEZO1 and PIEZO2 were ubiquitously detected and colocalized in odontoblasts. Intense immunoreactivity of PIEZO1 and PIEZO2 has been observed in human and murine periodontal ligaments. Our findings suggest that PIEZO1 and PIEZO2 may be mechanosensors/mechanotransducers in murine odontoblasts, as well as in the transmission of forces by the periodontal ligament in humans and mice.
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Affiliation(s)
- Juan J Gaite
- Departamento de Morfología y Biología Celular, Grupo SINPOS, Universidad de Oviedo, Oviedo, Spain
- Unidad Dental, Clínica Universitaria de Navarra, Pamplona, Spain
| | - Antonio Solé-Magdalena
- Departamento de Morfología y Biología Celular, Grupo SINPOS, Universidad de Oviedo, Oviedo, Spain
| | - Yolanda García-Mesa
- Departamento de Morfología y Biología Celular, Grupo SINPOS, Universidad de Oviedo, Oviedo, Spain
| | - Patricia Cuendias
- Departamento de Morfología y Biología Celular, Grupo SINPOS, Universidad de Oviedo, Oviedo, Spain
| | - José Martin-Cruces
- Departamento de Morfología y Biología Celular, Grupo SINPOS, Universidad de Oviedo, Oviedo, Spain
| | - Olivia García-Suárez
- Departamento de Morfología y Biología Celular, Grupo SINPOS, Universidad de Oviedo, Oviedo, Spain
| | - Teresa Cobo
- Departamento de Cirugía y Especialidades Médico-Quirúrgicas, Universidad de Oviedo, Oviedo, Spain
- Instituto Asturiano de Odontología, Oviedo, Spain
| | - José A Vega
- Departamento de Morfología y Biología Celular, Grupo SINPOS, Universidad de Oviedo, Oviedo, Spain
- Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Santiago, Chile
| | - Benjamín Martín-Biedma
- Departamento de Cirugía y Especialidades Médico-Quirúrgicas, Universidad de Santiago de Compostela, Santiago, Spain
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Kilanowski-Doroh IM, McNally AB, Wong T, Visniauskas B, Blessinger SA, Sugi AI, Richard C, Diaz Z, Horton A, Natale CA, Ogola BO, Lindsey SH. Ovariectomy-Induced Arterial Stiffening Differs From Vascular Aging and Is Reversed by GPER Activation. Hypertension 2024; 81:e51-e62. [PMID: 38445498 PMCID: PMC11023783 DOI: 10.1161/hypertensionaha.123.22024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 02/16/2024] [Indexed: 03/07/2024]
Abstract
BACKGROUND Arterial stiffness is a cardiovascular risk factor and dramatically increases as women transition through menopause. The current study assessed whether a mouse model of menopause increases arterial stiffness in a similar manner to aging and whether activation of the G-protein-coupled estrogen receptor could reverse stiffness. METHODS Female C57Bl/6J mice were ovariectomized at 10 weeks of age or aged to 52 weeks, and some mice were treated with G-protein-coupled estrogen receptor agonists. RESULTS Ovariectomy and aging increased pulse wave velocity to a similar extent independent of changes in blood pressure. Aging increased carotid wall thickness, while ovariectomy increased material stiffness without altering vascular geometry. RNA-sequencing analysis revealed that ovariectomy downregulated smooth muscle contractile genes. The enantiomerically pure G-protein-coupled estrogen receptor agonist, LNS8801, reversed stiffness in ovariectomy mice to a greater degree than the racemic agonist G-1. In summary, ovariectomy and aging induced arterial stiffening via potentially different mechanisms. Aging was associated with inward remodeling, while ovariectomy-induced material stiffness independent of geometry and a loss of the contractile phenotype. CONCLUSIONS This study enhances our understanding of the impact of estrogen loss on vascular health in a murine model and warrants further studies to examine the ability of LNS8801 to improve vascular health in menopausal women.
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Affiliation(s)
| | | | - Tristen Wong
- Department of Pharmacology, Tulane School of Medicine, New Orleans, LA
| | - Bruna Visniauskas
- Department of Pharmacology, Tulane School of Medicine, New Orleans, LA
| | | | | | - Chase Richard
- Department of Pharmacology, Tulane School of Medicine, New Orleans, LA
- Tulane Brain Institute, Tulane University, New Orleans, LA
| | - Zaidmara Diaz
- Department of Pharmacology, Tulane School of Medicine, New Orleans, LA
| | - Alec Horton
- Department of Pharmacology, Tulane School of Medicine, New Orleans, LA
| | | | - Benard O. Ogola
- Vascular Biology Center and Department of Medicine, Medical College of Georgia at Augusta University, Augusta, GA
| | - Sarah H. Lindsey
- Department of Pharmacology, Tulane School of Medicine, New Orleans, LA
- Tulane Brain Institute, Tulane University, New Orleans, LA
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Van Woerkom A, Harney DJ, Nagarajan SR, Hakeem-Sanni MF, Lin J, Hooke M, Pilpitel T, Cooney GJ, Larance M, Saunders DN, Brandon AE, Hoy AJ. Hepatic lipid droplet-associated proteome changes distinguish dietary-induced fatty liver from glucose tolerance in male mice. Am J Physiol Endocrinol Metab 2024. [PMID: 38656127 DOI: 10.1152/ajpendo.00013.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 04/15/2024] [Indexed: 04/26/2024]
Abstract
Fatty liver is characterized by the expansion of lipid droplets (LDs) and is associated with the development of many metabolic diseases. We assessed the morphology of hepatic LDs and performed quantitative proteomics in lean, glucose-tolerant mice compared to high-fat diet (HFD) fed mice that displayed hepatic steatosis and glucose intolerance as well as high-starch diet (HStD) fed mice who exhibited similar levels of hepatic steatosis but remained glucose tolerant. Both HFD and HStD-fed mice had more and larger LDs than Chow-fed animals. We observed striking differences in liver LD proteomes of HFD and HStD-fed mice compared to Chow-fed mice, with fewer differences between HFD and HStD. Taking advantage of our diet strategy, we identified a fatty liver LD proteome consisting of proteins common in HFD- and HStD-fed mice, as well as a proteome associated with glucose tolerance that included proteins shared in Chow and HStD but not HFD-fed mice. Notably, glucose intolerance was associated with changes in the ratio of adipose triglyceride lipase to perilipin 5 in the LD proteome, suggesting dysregulation of neutral lipid homeostasis in glucose-intolerant fatty liver. We conclude that our novel dietary approach uncouples ectopic lipid burden from insulin resistance-associated changes in the hepatic lipid droplet proteome.
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Affiliation(s)
- Andries Van Woerkom
- School of Medical Sciences, University of Sydney, Sydney, New South Wales, Australia
| | - Dylan J Harney
- School of Life and Environmental Sciences, University of Sydney, Sydney, New South Wales, Australia
| | - Shilpa R Nagarajan
- School of Medical Sciences, University of Sydney, Sydney, New South Wales, Australia
| | - Mariam F Hakeem-Sanni
- School of Medical Sciences, University of Sydney, Sydney, New South Wales, Australia
| | - Jinfeng Lin
- School of Medical Sciences, University of Sydney, Sydney, New South Wales, Australia
| | - Matthew Hooke
- School of Medical Sciences, University of Sydney, Sydney, New South Wales, Australia
| | - Tamara Pilpitel
- School of Life and Environmental Sciences, University of Sydney, Sydney, New South Wales, Australia
| | - Gregory J Cooney
- Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
| | - Mark Larance
- School of Medical Sciences, University of Sydney, Sydney, New South Wales, Australia
| | - Darren N Saunders
- School of Medical Sciences, University of Sydney, Sydney, New South Wales, Australia
| | - Amanda E Brandon
- Sydney Medical School, Charles Perking Centre D17, Univerity of Sydney, Sydney, New South Wales, Australia
| | - Andrew J Hoy
- School of Medical Sciences, University of Sydney, Sydney, New South Wales, Australia
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Dutta A, Anima B, Riba P, Gurusubramanian G, Roy VK. Expression and localization of apelin and apelin receptor protein in the oviduct of letrozole-induced hyperandrogenized mice. Cell Biol Int 2024. [PMID: 38634302 DOI: 10.1002/cbin.12164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 03/19/2024] [Accepted: 03/31/2024] [Indexed: 04/19/2024]
Abstract
Apelin and its receptor (APJ) are expressed in the reproductive organs of some mammalian females. The function of oviduct has also been suggested to be compromised in the hyperandrogenism condition. However, expression of apelin and APJ has not been shown in the oviduct of hyperandrogenized mice. Thus, the present study has investigated the localization and expression of apelin and APJ in the letrozole-induced hyperandrogenized mice oviduct. Histomorphometric analysis showed decreased lumen of oviduct in the hyperandrogenized mice. Our results showed elevated expression of APJ and decreased abundance of apelin in the hyperandrogenized mice oviduct. This finding suggests impaired apelin signaling in the oviduct of hyperandrogenized mice. The expression of androgen receptor was upregulated while estrogen receptors were downregulated in the hyperandrogenized mice. The expression of HSP70 was also downregulated along with increased expression of active caspase 3 and BAX and decreased expression of BCL2 in hyperandrogenized mice. Furthermore, the phosphorylation of phospho-Ser473-Akt and phospho-Thr308-Akt also showed differential levels in the oviduct of hyperandrogenized mice. Whether this differential phosphorylation of Akt was solely due to impaired apelin signaling in the oviduct, remains unclear. Moreover, increased androgen signaling and suppressed estrogen signaling coincides with elevated apoptosis. In conclusion, hyperandrogenized conditions could also impair the gamete transport and fertilization process due to apoptosis in the oviduct. However, further study would be required to unravel the exact role of apelin signaling in the oviduct in relation to apoptosis.
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Affiliation(s)
- Ayushmita Dutta
- Department of Zoology, Mizoram University, Aizawl, Mizoram, India
| | - Borgohain Anima
- Department of Zoology, Mizoram University, Aizawl, Mizoram, India
| | - Preethi Riba
- Department of Zoology, Mizoram University, Aizawl, Mizoram, India
| | | | - Vikas Kumar Roy
- Department of Zoology, Mizoram University, Aizawl, Mizoram, India
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Hao HJ, Li YH, Yu B, Liu X, Zhang Y, Xing XL. Neuroprotective effects of acteoside in a glaucoma mouse model by targeting Serta domain-containing protein 4. Int J Ophthalmol 2024; 17:625-637. [PMID: 38638260 PMCID: PMC10988069 DOI: 10.18240/ijo.2024.04.04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 01/04/2024] [Indexed: 04/20/2024] Open
Abstract
AIM To explore the therapeutic effect and main molecular mechanisms of acteoside in a glaucoma model in DBA/2J mice. METHODS Proteomics was used to compare the differentially expressed proteins of C57 and DBA/2J mice. After acteoside administration in DBA/2J mice, anterior segment observation, intraocular pressure (IOP) monitoring, electrophysiology examination, and hematoxylin and eosin staining were used to analyze any potential effects. Immunohistochemistry (IHC) assays were used to verify the proteomics results. Furthermore, retinal ganglion cell 5 (RGC5) cell proliferation was assessed with cell counting kit-8 (CCK-8) assays. Serta domain-containing protein 4 (Sertad4) mRNA and protein expression levels were measured by qRT-PCR and Western blot analysis, respectively. RESULTS Proteomics analysis suggested that Sertad4 was the most significantly differentially expressed protein. Compared with the saline group, the acteoside treatment group showed decreased IOP, improved N1-P1 wave amplitudes, thicker retina, and larger numbers of cells in the ganglion cell layer (GCL). The IHC results showed that Sertad4 expression levels in DBA/2J mice treated with acteoside were significantly lower than in the saline group. Acteoside treatment could improve RGC5 cell survival and reduce the Sertad4 mRNA and protein expression levels after glutamate injury. CONCLUSION Sertad4 is differentially expressed in DBA/2J mice. Acteoside can protect RGCs from damage, possibly through the downregulation of Sertad4, and has a potential use in glaucoma treatment.
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Affiliation(s)
- Hui-Jie Hao
- Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin 300384, China
| | - Ya-Hong Li
- Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin 300384, China
| | - Bo Yu
- Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin 300384, China
| | - Xun Liu
- Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin 300384, China
| | - Yan Zhang
- Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin 300384, China
| | - Xiao-Li Xing
- Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin 300384, China
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9
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Wondimu NL, Mengistie MG, Yesuf JS. Evaluation of Diuretic Activity of Aqueous and Hydro Methanolic Crude Extracts and Solvent Fraction of the Hydromethanolic Flower Extract of Erica Arborea L. (Ericaceae) in Swiss Albino Mice. J Exp Pharmacol 2024; 16:175-187. [PMID: 38650861 PMCID: PMC11034569 DOI: 10.2147/jep.s453578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Accepted: 04/09/2024] [Indexed: 04/25/2024] Open
Abstract
Purpose To evaluate the diuretic effects of aqueous (AQ) and hydromethanolic crude extract (HM) the as well as the solvent fractions of the HM extract from Erica arborea flowers in mice. Methods Mice were administered AQ and HM crude extracts, along with solvent fractions of HM extracts of E. arborea flowers, including HXF (n-hexane fraction), EAF (ethyl acetate fraction), and AQF (aqueous fraction), at doses ranging from 100 to 400 mg/kg orally. The effects of these extracts and solvent fractions on urine and salt excretion over 5 hours were compared to the effects of the solvent used for reconstitution and a standard drug (furosemide 10 mg/kg), as well as to each other. Results The HM crude extract at a lower dose (100 mg/kg) significantly increased urine volume and salt excretion starting from the 3rd h compared to the AQ crude extract. Similar effects were observed for EAF. Notably, the HM extract and its EAF at 400 mg/kg showed comparable urine and salt excretion profiles to the standard drug. Conclusion This study demonstrated that HM extract and EAF promote better diuresis, likely due to their saluretic properties. Furthermore, it confirms the diuretic activity of Erica arborea flowers.
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Affiliation(s)
- Nardos Lema Wondimu
- Department of Pharmacy, College of Medicine and Health Sciences, Wolkite University, Wolkite, Ethiopia
| | - Mestayet Geta Mengistie
- Department of Pharmacology, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia
| | - Jibril Seid Yesuf
- Department of Pharmacology, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia
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10
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Yin Y, Haggerty DL, Zhou S, Atwood BK, Sheets PL. Converging Effects of Chronic Pain and Binge Alcohol Consumption on Anterior Insular Cortex Neurons Projecting to the Dorsolateral Striatum in Male Mice. J Neurosci 2024; 44:e1287232024. [PMID: 38453466 PMCID: PMC11026341 DOI: 10.1523/jneurosci.1287-23.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 02/19/2024] [Accepted: 02/20/2024] [Indexed: 03/09/2024] Open
Abstract
Chronic pain and alcohol use disorder (AUD) are highly comorbid, and patients with chronic pain are more likely to meet the criteria for AUD. Evidence suggests that both conditions alter similar brain pathways, yet this relationship remains poorly understood. Prior work shows that the anterior insular cortex (AIC) is involved in both chronic pain and AUD. However, circuit-specific changes elicited by the combination of pain and alcohol use remain understudied. The goal of this work was to elucidate the converging effects of binge alcohol consumption and chronic pain on AIC neurons that send projections to the dorsolateral striatum (DLS). Here, we used the Drinking-in-the-Dark (DID) paradigm to model binge-like alcohol drinking in mice that underwent spared nerve injury (SNI), after which whole-cell patch-clamp electrophysiological recordings were performed in acute brain slices to measure intrinsic and synaptic properties of AIC→DLS neurons. In male, but not female, mice, we found that SNI mice with no prior alcohol exposure consumed less alcohol compared with sham mice. Electrophysiological analyses showed that AIC→DLS neurons from SNI-alcohol male mice displayed increased neuronal excitability and increased frequency of miniature excitatory postsynaptic currents. However, mice exposed to alcohol prior to SNI consumed similar amounts of alcohol compared with sham mice following SNI. Together, our data suggest that the interaction of chronic pain and alcohol drinking have a direct effect on both intrinsic excitability and synaptic transmission onto AIC→DLS neurons in mice, which may be critical in understanding how chronic pain alters motivated behaviors associated with alcohol.
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Affiliation(s)
- Yuexi Yin
- Medical Neurosciences Graduate Program, Indiana University School of Medicine, Indianapolis, Indiana 46202
- Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, Indiana 46202
| | - David L Haggerty
- Medical Neurosciences Graduate Program, Indiana University School of Medicine, Indianapolis, Indiana 46202
- Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, Indiana 46202
| | - Shudi Zhou
- Medical Neurosciences Graduate Program, Indiana University School of Medicine, Indianapolis, Indiana 46202
- Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, Indiana 46202
| | - Brady K Atwood
- Medical Neurosciences Graduate Program, Indiana University School of Medicine, Indianapolis, Indiana 46202
- Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, Indiana 46202
- Department of Pharmacology & Toxicology, Indiana University School of Medicine, Indianapolis, Indiana 46202
| | - Patrick L Sheets
- Medical Neurosciences Graduate Program, Indiana University School of Medicine, Indianapolis, Indiana 46202
- Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, Indiana 46202
- Department of Pharmacology & Toxicology, Indiana University School of Medicine, Indianapolis, Indiana 46202
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11
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Bhandari K, Kanodia H, Donato F, Caroni P. Selective vulnerability of the ventral hippocampus-prelimbic cortex axis parvalbumin interneuron network underlies learning deficits of fragile X mice. Cell Rep 2024; 43:114124. [PMID: 38630591 DOI: 10.1016/j.celrep.2024.114124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 03/07/2024] [Accepted: 04/02/2024] [Indexed: 04/19/2024] Open
Abstract
High-penetrance mutations affecting mental health can involve genes ubiquitously expressed in the brain. Whether the specific patterns of dysfunctions result from ubiquitous circuit deficits or might reflect selective vulnerabilities of targetable subnetworks has remained unclear. Here, we determine how loss of ubiquitously expressed fragile X mental retardation protein (FMRP), the cause of fragile X syndrome, affects brain networks in Fmr1y/- mice. We find that in wild-type mice, area-specific knockout of FMRP in the adult mimics behavioral consequences of area-specific silencing. By contrast, the functional axis linking the ventral hippocampus (vH) to the prelimbic cortex (PreL) is selectively affected in constitutive Fmr1y/- mice. A chronic alteration in late-born parvalbumin interneuron networks across the vH-PreL axis rescued by VIP signaling specifically accounts for deficits in vH-PreL theta-band network coherence, ensemble assembly, and learning functions of Fmr1y/- mice. Therefore, vH-PreL axis function exhibits a selective vulnerability to loss of FMRP in the vH or PreL, leading to learning and memory dysfunctions in fragile X mice.
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Affiliation(s)
- Komal Bhandari
- Friedrich Miescher Institute for Biomedical Research, 4058 Basel, Switzerland
| | - Harsh Kanodia
- Biozentrum, University of Basel, 4058 Basel, Switzerland
| | - Flavio Donato
- Biozentrum, University of Basel, 4058 Basel, Switzerland
| | - Pico Caroni
- Friedrich Miescher Institute for Biomedical Research, 4058 Basel, Switzerland.
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12
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Kogan JF, Fontanini A. Learning enhances representations of taste-guided decisions in the mouse gustatory insular cortex. Curr Biol 2024:S0960-9822(24)00374-9. [PMID: 38631343 DOI: 10.1016/j.cub.2024.03.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 02/07/2024] [Accepted: 03/19/2024] [Indexed: 04/19/2024]
Abstract
Learning to discriminate overlapping gustatory stimuli that predict distinct outcomes-a feat known as discrimination learning-can mean the difference between ingesting a poison or a nutritive meal. Despite the obvious importance of this process, very little is known about the neural basis of taste discrimination learning. In other sensory modalities, this form of learning can be mediated by either the sharpening of sensory representations or the enhanced ability of "decision-making" circuits to interpret sensory information. Given the dual role of the gustatory insular cortex (GC) in encoding both sensory and decision-related variables, this region represents an ideal site for investigating how neural activity changes as animals learn a novel taste discrimination. Here, we present results from experiments relying on two-photon calcium imaging of GC neural activity in mice performing a taste-guided mixture discrimination task. The task allows for the recording of neural activity before and after learning induced by training mice to discriminate increasingly similar pairs of taste mixtures. Single-neuron and population analyses show a time-varying pattern of activity, with early sensory responses emerging after taste delivery and binary, choice-encoding responses emerging later in the delay before a decision is made. Our results demonstrate that, while both sensory and decision-related information is encoded by GC in the context of a taste mixture discrimination task, learning and improved performance are associated with a specific enhancement of decision-related responses.
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Affiliation(s)
- Joshua F Kogan
- Graduate Program in Neuroscience, Stony Brook University, Stony Brook, NY 11794, USA; Medical Scientist Training Program, Stony Brook University, Stony Brook, NY 11794, USA; Department of Neurobiology and Behavior, Stony Brook University, Stony Brook, NY 11794, USA.
| | - Alfredo Fontanini
- Graduate Program in Neuroscience, Stony Brook University, Stony Brook, NY 11794, USA; Medical Scientist Training Program, Stony Brook University, Stony Brook, NY 11794, USA; Department of Neurobiology and Behavior, Stony Brook University, Stony Brook, NY 11794, USA.
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13
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Affiliation(s)
- Danielle Karakas
- Toronto Platelet Immunobiology Group (D.K., H.N.)
- Department of Laboratory Medicine and Pathobiology (D.K., H.N.)
- University of Toronto, ON, Canada (D.K., H.N.)
- Department of Laboratory Medicine, Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, Canada (D.K., H.N.)
| | - Heyu Ni
- Toronto Platelet Immunobiology Group (D.K., H.N.)
- Department of Laboratory Medicine and Pathobiology (D.K., H.N.)
- Department of Medicine (H.N.)
- Department of Physiology (H.N.)
- University of Toronto, ON, Canada (D.K., H.N.)
- Department of Laboratory Medicine, Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, Canada (D.K., H.N.)
- Canadian Blood Services Centre for Innovation, Toronto, ON, Canada (H.N.)
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14
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Chin PY, Kieffer TEC, Prins JR, Russell DL, Davies MJ, Robertson SA. Clomiphene citrate administered in peri-conception phase causes fetal loss and developmental impairment in mice. Endocrinology 2024:bqae047. [PMID: 38608138 DOI: 10.1210/endocr/bqae047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 04/02/2024] [Accepted: 04/10/2024] [Indexed: 04/14/2024]
Abstract
Clomiphene citrate is a common treatment for ovulation induction in subfertile women, but its use is associated with elevated risk of adverse perinatal outcomes and birth defects. To investigate the biological plausibility of a causal relationship, this study investigated in mice the consequences for fetal development and pregnancy outcome of peri-conception clomiphene citrate administration at doses approximating human exposures. A dose-dependent adverse effect of clomiphene citrate given twice in the 36 h after mating was seen, with a moderate dose of 0.75 mg/kg sufficient to cause altered reproductive outcomes in three independent cohorts. Viable pregnancy was reduced by 30%, late gestation fetal weight was reduced by 16%, and ∼30% of fetuses exhibited delayed development and/or congenital abnormalities not seen in control dams, including defects of the lung, kidney, liver, eye, skin, limbs, and umbilicus. Clomiphene citrate also caused a 30 h average delay in time of birth, and elevated rate of pup death in the early postnatal phase. In surviving offspring, growth trajectory tracking and body morphometry analysis at 20 weeks of age showed post-weaning growth and development comparable to controls. A dysregulated inflammatory response in the endometrium was observed and may contribute to the underlying pathophysiological mechanism. These results demonstrate that in utero exposure to clomiphene citrate during early pregnancy can inhibit implantation and impact fetal growth and development, causing adverse perinatal outcomes. The findings raise the prospect of similar iatrogenic effects in women where clomiphene citrate may be present in the peri-conception phase unless its use is well-supervised.
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Affiliation(s)
- Peck Y Chin
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide SA 5005, Australia
| | - Tom E C Kieffer
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide SA 5005, Australia
- Department of Obstetrics and Gynecology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Jelmer R Prins
- Department of Obstetrics and Gynecology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Darryl L Russell
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide SA 5005, Australia
| | - Michael J Davies
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide SA 5005, Australia
| | - Sarah A Robertson
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide SA 5005, Australia
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Comerma-Steffensen S, Kun A, Prat-Duran J, Mogensen S, Alan Albayrak E, Fais R, Munro G, Peters D, Simonsen U. A novel reuptake inhibitor, IP2015, induces erection by increasing central dopamine and peripheral nitric oxide release. Br J Pharmacol 2024. [PMID: 38604613 DOI: 10.1111/bph.16362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 02/07/2024] [Accepted: 02/12/2024] [Indexed: 04/13/2024] Open
Abstract
BACKGROUND AND PURPOSE An estimated 40% of patients with erectile dysfunction have a poor prognosis for improvement with currently available treatments. The present study investigated whether a newly developed monoamine transport inhibitor, IP2015, improves erectile function. EXPERIMENTAL APPROACH We investigated the effects of IP2015 on monoamine uptake and binding, erectile function in rats and diabetic mice and the effect on corpus cavernosum contractility. KEY RESULTS IP2015 inhibited the uptake of 5-HT, noradrenaline and dopamine by human monoamine transporters expressed in cells and in rat brain synaptosomes. Intracavernosal pressure measurement in anaesthetized rats revealed that IP2015 dose-dependently increased the number and the duration of spontaneous erections. Whereas pretreatment with the dopamine D2-like receptor antagonists, clozapine and (-)-sulpiride, or cutting the cavernosal nerve inhibited IP2015-induced erectile responses, the phosphodiesterase type 5 inhibitor sildenafil further enhanced the IP2015-mediated increase in intracavernosal pressure. IP2015 also increased the number of erections in type 2 diabetic db/db mice. Direct intracavernosal injection of IP2015 increased penile pressure, and in corpus cavernosum strips, IP2015 induced concentration-dependent relaxations. These relaxations were enhanced by sildenafil and blunted by endothelial cell removal, a nitric oxide synthase inhibitor, NG-nitro-l-arginine and a D1-like receptor antagonist, SCH23390. Quantitative polymerase chain reaction (qPCR) showed the expression of the dopamine transporter in the rat corpus cavernosum. CONCLUSION AND IMPLICATIONS Our findings suggest that IP2015 stimulates erectile function by a central mechanism involving dopamine reuptake inhibition and direct NO-mediated relaxation of the erectile tissue. This novel multi-modal mechanism of action could offer a new treatment approach to erectile dysfunction.
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Affiliation(s)
- Simon Comerma-Steffensen
- Department of Biomedicine, Pulmonary and Cardiovascular Pharmacology, Aarhus University, Aarhus, Denmark
- Department of Biomedical Sciences/Animal Physiology, Faculty of Veterinary, Central University of Venezuela, Caracas, Venezuela
- Initiator Pharma A/S, Copenhagen, Denmark
| | - Attila Kun
- Department of Biomedicine, Pulmonary and Cardiovascular Pharmacology, Aarhus University, Aarhus, Denmark
| | - Judit Prat-Duran
- Department of Biomedicine, Pulmonary and Cardiovascular Pharmacology, Aarhus University, Aarhus, Denmark
| | - Susie Mogensen
- Department of Biomedicine, Pulmonary and Cardiovascular Pharmacology, Aarhus University, Aarhus, Denmark
| | - Elif Alan Albayrak
- Department of Biomedicine, Pulmonary and Cardiovascular Pharmacology, Aarhus University, Aarhus, Denmark
- Department of Pharmacology, Faculty of Pharmacy, Ege University, Izmir, Türkiye
| | - Rafael Fais
- Department of Biomedicine, Pulmonary and Cardiovascular Pharmacology, Aarhus University, Aarhus, Denmark
- Division of Pulmonary, Critical Care, Sleep and Occupational Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | | | - Dan Peters
- Initiator Pharma A/S, Copenhagen, Denmark
- DanPET AB, Malmö, Sweden
| | - Ulf Simonsen
- Department of Biomedicine, Pulmonary and Cardiovascular Pharmacology, Aarhus University, Aarhus, Denmark
- Initiator Pharma A/S, Copenhagen, Denmark
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16
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Liang S, Zhao Y, Liu X, Wang Y, Yang H, Zhuo D, Fan F, Guo M, Luo G, Fan Y, Zhang L, Lv X, Chen X, Li SS, Jin X. Prenatal Progesterone Treatment Modulates Fetal Brain Transcriptome and Impacts Adult Offspring Behavior in Mice. Physiol Behav 2024:114549. [PMID: 38604593 DOI: 10.1016/j.physbeh.2024.114549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 03/27/2024] [Accepted: 04/08/2024] [Indexed: 04/13/2024]
Abstract
Maternal exposure to elevated levels of steroid hormones during pregnancy is associated with the development of chronic conditions in offspring that manifest in adulthood. However, the effects of progesterone (P4) administration during early pregnancy on fetal development and subsequent offspring behavior remain poorly understood. In this study, we aimed to investigate the effects of P4 treatment during early pregnancy on the transcript abundance in the fetal brain and assess the behavioral consequences in the offspring during adolescence and adulthood. Using RNA-seq analysis, we examined the impact of P4 treatment on the fetal brain transcriptome in a dosage-dependent manner. Our results revealed differential regulation of genes involved in neurotransmitter transport, synaptic transmission, and transcriptional regulation. Specifically, we observed bidirectional regulation of transcription factors (TFs) by P4 at different doses, highlighting the critical role of these TFs in neurodevelopment. To assess behavioral outcomes, we conducted open field and elevated plus maze tests. Offspring treated with low-dose P4 (LP4) displayed increased exploratory behavior during both adolescence and adulthood. In contrast, the high-dose P4 (HP4) group exhibited impaired exploration and heightened anxiety-like behaviors compared to the control mice. Moreover, in a novel object recognition test, HP4-treated offspring demonstrated impaired object recognition memory during both developmental stages. Additionally, both LP4 and HP4 groups showed reduced social interaction in the three-chamber test. These results suggest that prenatal exposure to P4 exerts a notable influence on the expression of genes associated with neurodevelopment and may induce alterations in behavioral characteristics in progeny, highlighting the need to monitor progesterone levels during pregnancy for long-term impacts on fetal brain development and behavior.
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Affiliation(s)
- Shuang Liang
- Tianjin Central Hospital of Gynecology Obstetrics, Tianjin, China
| | - Ying Zhao
- School of Medicine, Nankai University, Tianjin, China
| | - Xiuwei Liu
- Tianjin Central Hospital of Gynecology Obstetrics, Tianjin, China
| | - Yan Wang
- Jiujiang Maternal and Child Health Hospital
| | | | - Donghai Zhuo
- School of Medicine, Nankai University, Tianjin, China
| | - Feifei Fan
- School of Medicine, Nankai University, Tianjin, China
| | - Miao Guo
- School of Medicine, Nankai University, Tianjin, China
| | - Gan Luo
- Tianjin Medical University, Tianjin, China
| | - Yonggang Fan
- School of Medicine, Nankai University, Tianjin, China
| | - Lingzhu Zhang
- School of Medicine, Nankai University, Tianjin, China
| | - Xinxin Lv
- School of Medicine, Nankai University, Tianjin, China
| | - Xu Chen
- School of Medicine, Nankai University, Tianjin, China; Tianjin Central Hospital of Gynecology Obstetrics, Tianjin, China; Tianjin Key Laboratory of Human Development and Reproductive Regulation, Tianjin, China.
| | - Shan-Shan Li
- School of Medicine, Nankai University, Tianjin, China.
| | - Xin Jin
- School of Medicine, Nankai University, Tianjin, China; Tianjin Central Hospital of Gynecology Obstetrics, Tianjin, China; Tianjin Key Laboratory of Human Development and Reproductive Regulation, Tianjin, China.
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17
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Miao C, Wu Z, Sun Y, Cao Z. Deoxynivalenol Induces Intestinal Epithelial Barrier Damage through RhoA/ROCK Pathway-Mediated Apoptosis and F-Actin-Associated Tight Junction Disruption. J Agric Food Chem 2024. [PMID: 38595054 DOI: 10.1021/acs.jafc.4c02091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
Deoxynivalenol (DON) poses a serious global food safety risk due to its high toxicity and contamination rate. It disrupts the intestinal epithelial barrier, allowing exogenous toxins to enter the circulation and resulting in sepsis and systemic toxicity. In this research, 32 male Kunming mice and Porcine Small Intestinal Epithelial (IPEC-J2) cells were treated with DON at 0-4.8 mg/kg (7 d) and 0-12 μM (24 h), respectively. Histopathological results revealed that DON disrupted the intestinal epithelial barrier, causing apoptosis and tight junction (TJ) injury. Immunofluorescence and protein expression results showed that DON-induced p53-dependent mitochondrial pathway apoptosis and fibrillar actin (F-actin)-associated TJ injury and that the RhoA/ROCK pathway were activated in mice jejunal tissue and IPEC-J2 cells. Pretreatment with RhoA or ROCK inhibitors (Rosin or Y-27632) maintained DON-induced apoptosis and F-actin-associated TJ injury in IPEC-J2 cells. Thus, DON induces damage to the intestinal epithelial barrier through the RhoA/ROCK pathway-mediated apoptosis and F-actin-associated TJ disruption.
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Affiliation(s)
- Chenjiao Miao
- Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Zuoyao Wu
- Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Yafei Sun
- Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Zheng Cao
- Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
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18
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Morsi DS, Abu Quora HA, AboShabaan HS, El-Garawani IM, Abdel Moneim AE, Hathout HMR. Short-term immunotoxicity induced by florpyrauxifen-benzyl herbicide exposure in the spleen of male albino mice. J Exp Zool A Ecol Integr Physiol 2024. [PMID: 38594788 DOI: 10.1002/jez.2814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 03/17/2024] [Accepted: 03/21/2024] [Indexed: 04/11/2024]
Abstract
Florpyrauxifen-benzyl (FPB) is a new arylpicolinate systemic herbicide that has been used to control or suppress the majority of herbicide-resistant biotype weeds in rice. To our knowledge, the impact of FPB on the immune system remains undetected thus far. Hence, this work aimed to address the toxic effects of FPB and the possible related mechanisms on the spleen of exposed mice. Initially, an acute toxicological test was performed to ascertain the median lethal dose (LD50) of FPB for 24 h which was found to be 371.54 mg/kg b.wt. For mechanistic evaluation of FPB toxicity, three sublethal doses (1/20th, 1/10th, and 1/5th LD50) were orally administered to mice for 21 consecutive days. Changes in spleen relative weight, oxidative status, apoptotic and inflammatory markers, histopathological alterations were evaluated. Following the FPB exposure, significant (p < 0.05) decline in spleen index, apoptotic features, histolopathological changes were observed. Additionally, excessive oxidative stress in spleen tissues was monitored by downregulating antioxidant enzymes and upregulating the oxidant parameters. Furthermore, exposure to FPB resulted in notable activation of the NF-қB signaling pathway, accompanied by elevated levels of pro-inflammatory cytokines (namely, IL-1β and TNF-α) as well as CD3 and CD19 levels have decreased significantly in spleen tissues. Collectively, FPB exposure exhibited apoptosis, oxidative stress, immunosuppression, and inflammatory response in a dose-dependent manner, leading to spleen tissue damage and immunotoxicity. Further studies on FPB is recommended to outstand its hazards on ecosystems.
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Affiliation(s)
- Dalia S Morsi
- Zoology Department, Faculty of Science, Menoufia University, Shibin El Kom, Egypt
| | - Hagar A Abu Quora
- Zoology Department, Faculty of Science, Menoufia University, Shibin El Kom, Egypt
| | - Hind S AboShabaan
- Clinical Pathology Department, National Liver Institute Hospital, Menoufia University, Shebin El Kom, Egypt
| | - Islam M El-Garawani
- Zoology Department, Faculty of Science, Menoufia University, Shibin El Kom, Egypt
| | - Ahmed E Abdel Moneim
- Zoology and Entomology Department, Faculty of Science, Helwan University, Ain Helwan, Cairo, Egypt
| | - Heba M R Hathout
- Natural Resources Department, Faculty of African Postgraduate Studies, Cairo University, Giza, Egypt
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19
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Helbing DL, Haas F, Cirri E, Rahnis N, Dau TTD, Kelmer Sacramento E, Oraha N, Böhm L, Lajqi T, Fehringer P, Morrison H, Bauer R. Impact of inflammatory preconditioning on murine microglial proteome response induced by focal ischemic brain injury. Front Immunol 2024; 15:1227355. [PMID: 38655254 PMCID: PMC11036884 DOI: 10.3389/fimmu.2024.1227355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 03/11/2024] [Indexed: 04/26/2024] Open
Abstract
Preconditioning with lipopolysaccharide (LPS) induces neuroprotection against subsequent cerebral ischemic injury, mainly involving innate immune pathways. Microglia are resident immune cells of the central nervous system (CNS) that respond early to danger signals through memory-like differential reprogramming. However, the cell-specific molecular mechanisms underlying preconditioning are not fully understood. To elucidate the distinct molecular mechanisms of preconditioning on microglia, we compared these cell-specific proteomic profiles in response to LPS preconditioning and without preconditioning and subsequent transient focal brain ischemia and reperfusion, - using an established mouse model of transient focal brain ischemia and reperfusion. A proteomic workflow, based on isolated microglia obtained from mouse brains by cell sorting and coupled to mass spectrometry for identification and quantification, was applied. Our data confirm that LPS preconditioning induces marked neuroprotection, as indicated by a significant reduction in brain infarct volume. The established brain cell separation method was suitable for obtaining an enriched microglial cell fraction for valid proteomic analysis. The results show a significant impact of LPS preconditioning on microglial proteome patterns by type I interferons, presumably driven by the interferon cluster regulator proteins signal transducer and activator of transcription1/2 (STAT1/2).
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Affiliation(s)
- Dario Lucas Helbing
- Institute of Molecular Cell Biology, Jena University Hospital, Friedrich Schiller University, Jena, Germany
- Leibniz Institute on Aging, Fritz Lipmann Institute, Jena, Germany
- Department of Psychiatry and Psychotherapy, Jena University Hospital, Friedrich Schiller University Jena, Jena, Germany
- Center for Intervention and Research on Adaptive and Maladaptive Brain Circuits Underlying Mental Health (C-I-R-C), Jena-Magdeburg-Halle, Jena, Germany
- German Center for Mental Health (DZPG), Site Halle-Jena-Magdeburg, Jena, Germany
| | - Fabienne Haas
- Institute of Molecular Cell Biology, Jena University Hospital, Friedrich Schiller University, Jena, Germany
| | - Emilio Cirri
- Leibniz Institute on Aging, Fritz Lipmann Institute, Jena, Germany
| | - Norman Rahnis
- Leibniz Institute on Aging, Fritz Lipmann Institute, Jena, Germany
| | | | | | - Nova Oraha
- Institute of Molecular Cell Biology, Jena University Hospital, Friedrich Schiller University, Jena, Germany
- Leibniz Institute on Aging, Fritz Lipmann Institute, Jena, Germany
| | - Leopold Böhm
- Institute of Molecular Cell Biology, Jena University Hospital, Friedrich Schiller University, Jena, Germany
- Leibniz Institute on Aging, Fritz Lipmann Institute, Jena, Germany
- Department of Microbiology and Hospital Hygiene, Bundeswehr Central Hospital Koblenz, Koblenz, Germany
| | - Trim Lajqi
- Department of Neonatology, Heidelberg University Children’s Hospital, Heidelberg, Germany
| | - Pascal Fehringer
- Institute of Molecular Cell Biology, Jena University Hospital, Friedrich Schiller University, Jena, Germany
| | - Helen Morrison
- Leibniz Institute on Aging, Fritz Lipmann Institute, Jena, Germany
- Faculty of Biological Sciences, Friedrich-Schiller University, Jena, Germany
| | - Reinhard Bauer
- Institute of Molecular Cell Biology, Jena University Hospital, Friedrich Schiller University, Jena, Germany
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20
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Place NJ, Peck DT. Testing the Adaptive Sterilization Hypothesis in mice inoculated with Chlamydia muridarum. Integr Comp Biol 2024:icae010. [PMID: 38587825 DOI: 10.1093/icb/icae010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2024] Open
Abstract
The "adaptive sterilization hypothesis" argues that the tendency of sexually transmitted infections (STIs) to cause infertility likely reflects an evolutionary adaptation of these pathogens. For example, some STIs can lead to bilateral occlusions of the oviducts and sterile matings. Cycling females that do not spend time gestating and lactating are ready to mate sooner than fertile females, and therefore, likely to mate more frequently and possibly more promiscuously. These sexual activities are associated with enhanced transmissibility of STIs, and tubal occlusion is a proximate mechanism by which STIs can increase fitness. Our principal objectives were to determine whether female mice inoculated with Chlamydia muridarum mate more frequently than mice inoculated with sterile saline and to test the hypothesis that tubal occlusion following C. muridarum infection modulates mating behavior in a manner that might increase transmissibility of Chlamydia. Similar to C. trachomatis infections in human females, C. muridarum can ascend the reproductive tract of mice, damage and occlude the oviducts, and cause infertility. However, ovarian function and mating activity are maintained following tubal occlusion. Twenty C57Bl/6 mice with regular estrous cycles were given intra-vaginal inocula of C. muridarum and 32 days later paired with a male for 90 days. Nine saline-treated females served as controls. Three Chlamydia-inoculated females were rendered infertile due to bilateral oviductal damage and mated 8 (±0.0) times. Control females mated on average 4.6 (±0.3) times, and 17 Chlamydia-inoculated fertile females, including six females with only a single oviduct occluded, mated on average 4.7 (±0.2) times. Chlamydia-inoculated fertile females with unilateral oviductal damage had significantly smaller average litter sizes as compared to females inoculated with saline. Females with unilateral tubal occlusion also tended to wean fewer pups than saline controls over the course of 90 days. Female mice with Chlamydia-induced tubal infertility mated more frequently (approximately every 11 d) than did fertile females (approximately every 20 d), which is consistent with the adaptive sterilization hypothesis. To determine whether Chlamydia-induced sterilization is truly adaptive, future studies will need to demonstrate increased sexual transmissibility, and possibly increased promiscuity, within populations of freely breeding mice.
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Affiliation(s)
- Ned J Place
- Departments of Population Medicine & Diagnostic Sciences1 and Neurobiology & Behavior
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Li L, Yin S, Zhou J, Zhang L, Teng Z, Qiao L, Wang Y, Yu J, Zang H, Ding Y, Liu X, Sun S, Guo H. Spike 1 trimer, a nanoparticle vaccine against porcine epidemic diarrhea virus induces protective immunity challenge in piglets. Front Microbiol 2024; 15:1386136. [PMID: 38650887 PMCID: PMC11033347 DOI: 10.3389/fmicb.2024.1386136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Accepted: 03/27/2024] [Indexed: 04/25/2024] Open
Abstract
Porcine epidemic diarrhea virus (PEDV) is considered the cause for porcine epidemic diarrhea (PED) outbreaks and hefty losses in pig farming. However, no effective commercial vaccines against PEDV mutant strains are available nowadays. Here, we constructed three native-like trimeric candidate nanovaccines, i.e., spike 1 trimer (S1-Trimer), collagenase equivalent domain trimer (COE-Trimer), and receptor-binding domain trimer (RBD-Trimer) for PEDV based on Trimer-Tag technology. And evaluated its physical properties and immune efficacy. The result showed that the candidate nanovaccines were safe for mice and pregnant sows, and no animal death or miscarriage occurred in our study. S1-Trimer showed stable physical properties, high cell uptake rate and receptor affinity. In the mouse, sow and piglet models, immunization of S1-Trimer induced high-level of humoral immunity containing PEDV-specific IgG and IgA. S1-Trimer-driven mucosal IgA responses and systemic IgG responses exhibited high titers of virus neutralizing antibodies (NAbs) in vitro. S1-Trimer induced Th1-biased cellular immune responses in mice. Moreover, the piglets from the S1-Trimer and inactivated vaccine groups displayed significantly fewer microscopic lesions in the intestinal tissue, with only one and two piglets showing mild diarrhea. The viral load in feces and intestines from the S1-Trimer and inactivated vaccine groups were significantly lower than those of the PBS group. For the first time, our data demonstrated the protective efficacy of Trimer-Tag-based nanovaccines used for PEDV. The S1-Trimer developed in this study was a competitive vaccine candidate, and Trimer-Tag may be an important platform for the rapid production of safe and effective subunit vaccines in the future.
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Affiliation(s)
- Linjie Li
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
- Gansu Province Research Center for Basic Disciplines of Pathogen Biology, Lanzhou, China
| | - Shuanghui Yin
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
- Gansu Province Research Center for Basic Disciplines of Pathogen Biology, Lanzhou, China
| | - Jingjing Zhou
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
- Gansu Province Research Center for Basic Disciplines of Pathogen Biology, Lanzhou, China
| | - Liping Zhang
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
- Gansu Province Research Center for Basic Disciplines of Pathogen Biology, Lanzhou, China
| | - Zhidong Teng
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
- Gansu Province Research Center for Basic Disciplines of Pathogen Biology, Lanzhou, China
| | - Lu Qiao
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
- Gansu Province Research Center for Basic Disciplines of Pathogen Biology, Lanzhou, China
| | - Yunhang Wang
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
- Gansu Province Research Center for Basic Disciplines of Pathogen Biology, Lanzhou, China
| | - Jiaxi Yu
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
- Gansu Province Research Center for Basic Disciplines of Pathogen Biology, Lanzhou, China
| | - Haoyue Zang
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
- Gansu Province Research Center for Basic Disciplines of Pathogen Biology, Lanzhou, China
| | - Yaozhong Ding
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
- Gansu Province Research Center for Basic Disciplines of Pathogen Biology, Lanzhou, China
| | - Xinsheng Liu
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
- Gansu Province Research Center for Basic Disciplines of Pathogen Biology, Lanzhou, China
| | - Shiqi Sun
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
- Gansu Province Research Center for Basic Disciplines of Pathogen Biology, Lanzhou, China
| | - Huichen Guo
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
- Gansu Province Research Center for Basic Disciplines of Pathogen Biology, Lanzhou, China
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Li Y, Xu C, Zhao F, Liu Q, Qiu X, Li M, Yang Y, Yu S, Tong H, Zhang L, Chen B, Qu L, Yu Z. Podocyte-specific Nup160 knockout mice develop nephrotic syndrome and glomerulosclerosis. Hum Mol Genet 2024; 33:667-676. [PMID: 38224683 DOI: 10.1093/hmg/ddad211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 12/15/2023] [Accepted: 12/18/2023] [Indexed: 01/17/2024] Open
Abstract
More than 60 monogenic genes mutated in steroid-resistant nephrotic syndrome (SRNS) have been identified. Our previous study found that mutations in nucleoporin 160 kD (NUP160) are implicated in SRNS. The NUP160 gene encodes a component of the nuclear pore complex. Recently, two siblings with homozygous NUP160 mutations presented with SRNS and a nervous system disorder. However, replication of nephrotic syndrome (NS)-associated phenotypes in a mammalian model following loss of Nup160 is needed to prove that NUP160 mutations cause SRNS. Here, we generated a podocyte-specific Nup160 knockout (Nup160podKO) mouse model using CRISPR/Cas9 and Cre/loxP technologies. We investigated NS-associated phenotypes in these Nup160podKO mice. We verified efficient abrogation of Nup160 in Nup160podKO mice at both the DNA and protein levels. We showed that Nup160podKO mice develop typical signs of NS. Nup160podKO mice exhibited progression of proteinuria to average albumin/creatinine ratio (ACR) levels of 15.06 ± 2.71 mg/mg at 26 weeks, and had lower serum albumin levels of 13.13 ± 1.34 g/l at 30 weeks. Littermate control mice had urinary ACR mean values of 0.03 mg/mg and serum albumin values of 22.89 ± 0.34 g/l at the corresponding ages. Further, Nup160podKO mice exhibited glomerulosclerosis compared with littermate control mice. Podocyte-specific Nup160 knockout in mice led to NS and glomerulosclerosis. Thus, our findings strongly support that mutations in NUP160 cause SRNS. The newly generated Nup160podKO mice are a reliable mammalian model for future study of the pathogenesis of NUP160-associated SRNS.
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Affiliation(s)
- Yuanyuan Li
- College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fujian Maternity and Child Health Hospital, 18 Daoshan Road, Fuzhou, Fujian 350000, China
- College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Department of Nephrology, Rheumatology and Immunology, Fujian Children's Hospital, 966 Heng Yu Road, Fuzhou, Fujian 350014, China
- Fujian Key Laboratory of Women and Children's Critical Diseases Research, 18 Daoshan Road, Fuzhou, Fujian 350000, China
| | - Chan Xu
- College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fujian Maternity and Child Health Hospital, 18 Daoshan Road, Fuzhou, Fujian 350000, China
- College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Department of Nephrology, Rheumatology and Immunology, Fujian Children's Hospital, 966 Heng Yu Road, Fuzhou, Fujian 350014, China
- Fujian Key Laboratory of Women and Children's Critical Diseases Research, 18 Daoshan Road, Fuzhou, Fujian 350000, China
- Department of Pediatrics, Fuzong Clinical Medical College, Fujian Medical University, 156 Xi Er Huan Bei Road, Fuzhou, Fujian 350025, China
| | - Feng Zhao
- College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Department of Nephrology, Rheumatology and Immunology, Fujian Children's Hospital, 966 Heng Yu Road, Fuzhou, Fujian 350014, China
| | - Qinghong Liu
- Department of Pathology, Fuzong Clinical Medical College, Fujian Medical University, 156 Xi Er Huan Bei Road, Fuzhou, Fujian 350025, China
| | - Xiaojian Qiu
- College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Department of Nephrology, Rheumatology and Immunology, Fujian Children's Hospital, 966 Heng Yu Road, Fuzhou, Fujian 350014, China
| | - Min Li
- Department of Pathology, Fuzong Clinical Medical College, Fujian Medical University, 156 Xi Er Huan Bei Road, Fuzhou, Fujian 350025, China
| | - Yonghui Yang
- College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Department of Nephrology, Rheumatology and Immunology, Fujian Children's Hospital, 966 Heng Yu Road, Fuzhou, Fujian 350014, China
| | - Shentong Yu
- Department of Pathology, Fuzong Clinical Medical College, Fujian Medical University, 156 Xi Er Huan Bei Road, Fuzhou, Fujian 350025, China
| | - Huajuan Tong
- College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Department of Nephrology, Rheumatology and Immunology, Fujian Children's Hospital, 966 Heng Yu Road, Fuzhou, Fujian 350014, China
| | - Lifang Zhang
- Department of Pathology, Fuzong Clinical Medical College, Fujian Medical University, 156 Xi Er Huan Bei Road, Fuzhou, Fujian 350025, China
| | - Bing Chen
- College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Department of Nephrology, Rheumatology and Immunology, Fujian Children's Hospital, 966 Heng Yu Road, Fuzhou, Fujian 350014, China
| | - Lijuan Qu
- Department of Pathology, Fuzong Clinical Medical College, Fujian Medical University, 156 Xi Er Huan Bei Road, Fuzhou, Fujian 350025, China
| | - Zihua Yu
- College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fujian Maternity and Child Health Hospital, 18 Daoshan Road, Fuzhou, Fujian 350000, China
- College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Department of Nephrology, Rheumatology and Immunology, Fujian Children's Hospital, 966 Heng Yu Road, Fuzhou, Fujian 350014, China
- Fujian Key Laboratory of Women and Children's Critical Diseases Research, 18 Daoshan Road, Fuzhou, Fujian 350000, China
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Uemura KI, Togo A, Hiroshige T, Ohta K, Ueda K, Nishihara K, Nakiri M, Hirashima S, Igawa T, Nakamura KI. Three-dimensional ultrastructural and anatomical analysis of prostatic neuroendocrine cells in mice. Prostate 2024. [PMID: 38590054 DOI: 10.1002/pros.24705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 03/11/2024] [Accepted: 03/25/2024] [Indexed: 04/10/2024]
Abstract
BACKGROUND A few studies have examined the ultrastructure of prostatic neuroendocrine cells (NECs), and no study has focused on their ultrastructure in three dimensions. In this study, three-dimensional ultrastructural analysis of mouse prostatic NECs was performed to clarify their anatomical characteristics. METHODS Three 13-week-old male C57BL/6 mice were deeply anesthetized, perfused with physiological saline and 2% paraformaldehyde, and then placed in 2.5% glutaraldehyde in 0.1 M cacodylate (pH 7.3) buffer for electron microscopy. After perfusion, the lower urinary tract, which included the bladder, prostate, coagulation gland, seminal vesicle, upper vas deferens, and urethra, was removed, and the specimen was cut into small cubes and subjected to postfixation and en bloc staining. Three-dimensional ultrastructural analysis was performed on NECs, the surrounding cells, tissues, and nerves using focused ion beam/scanning electron microscope tomography. RESULTS Twenty-seven serial sections were used in the present study, and 32 mouse prostatic NECs were analyzed. Morphologically, the NECs could be classified into three types: flask, flat, and closed. Closed-shaped NECs were always adjacent to flask-shaped cells. The flask-shaped and flat NECs were in direct contact with the ductal lumen and always had microvilli at their contact points. Many of the NECs had accompanying nerves, some of which terminated on the surface in contact with the NEC. CONCLUSIONS Three-dimensional ultrastructural analysis of mouse prostatic NECs was performed. These cells can be classified into three types based on shape. Novel findings include the presence of microvilli at their points of contact with the ductal lumen and the presence of accompanying nerves.
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Affiliation(s)
- Kei-Ichiro Uemura
- Department of Urology, Kurume University School of Medicine, Kurume, Japan
| | - Akinobu Togo
- Advanced Imaging Research Center, Kurume University School of Medicine, Kurume, Japan
| | - Tasuku Hiroshige
- Department of Urology, Kurume University School of Medicine, Kurume, Japan
| | - Keisuke Ohta
- Advanced Imaging Research Center, Kurume University School of Medicine, Kurume, Japan
| | - Kosuke Ueda
- Department of Urology, Kurume University School of Medicine, Kurume, Japan
| | - Kiyoaki Nishihara
- Department of Urology, Kurume University School of Medicine, Kurume, Japan
| | - Makoto Nakiri
- Department of Urology, Kurume University School of Medicine, Kurume, Japan
| | - Shingo Hirashima
- Dental and Oral Medical Center, Kurume University School of Medicine, Kurume, Japan
| | - Tsukasa Igawa
- Department of Urology, Kurume University School of Medicine, Kurume, Japan
| | - Kei-Ichiro Nakamura
- Advanced Imaging Research Center, Kurume University School of Medicine, Kurume, Japan
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Rowshan N, Anjomshoa M, Farahzad A, Bijad E, Amini-Khoei H. Gut-brain barrier dysfunction bridge autistic-like behavior in mouse model of maternal separation stress: A behavioral, histopathological, and molecular study. Int J Dev Neurosci 2024. [PMID: 38584149 DOI: 10.1002/jdn.10329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 03/03/2024] [Accepted: 03/14/2024] [Indexed: 04/09/2024] Open
Abstract
Autism spectrum disorder (ASD) is a fast-growing neurodevelopmental disorder throughout the world. Experiencing early life stresses (ELS) like maternal separation (MS) is associated with autistic-like behaviors. It has been proposed that disturbance in the gut-brain axis-mediated psychiatric disorders following MS. The role of disruption in the integrity of gut-brain barrier in ASD remains unclear. Addressing this knowledge gap, in this study we aimed to investigate role of the gut-brain barrier integrity in mediating autistic-like behaviors in mouse models of MS stress. To do this, mice neonates are separated daily from their mothers from postnatal day (PND) 2 to PND 14 for 3 hours. During PND58-60, behavioral tests related to autistic-like behaviors including three-chamber sociability, shuttle box, and resident-intruder tests were performed. Then, prefrontal cortex (PFC), hippocampus, and colon samples were dissected out for histopathological and molecular evaluations. Results showed that MS is associated with impaired sociability and social preference indexes, aggressive behaviors, and impaired passive avoidance memory. The gene expression of CLDN1 decreased in the colon, and the gene expression of CLDN5, CLDN12, and MMP9 increased in the PFC of the MS mice. MS is associated with decrease in the diameter of CA1 and CA3 areas of the hippocampus. In addition, MS led to histopathological changes in the colon. We concluded that, probably, disturbance in the gut-brain barrier integrities mediated the autistic-like behavior in MS stress in mice.
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Affiliation(s)
- Negin Rowshan
- Medical Plants Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Maryam Anjomshoa
- Medical Plants Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Anahita Farahzad
- Medical Plants Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Elham Bijad
- Medical Plants Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Hossein Amini-Khoei
- Medical Plants Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
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Kostromina MA, Tukhovskaya EA, Shaykhutdinova ER, Palikova YA, Palikov VA, Slashcheva GA, Ismailova AM, Kravchenko IN, Dyachenko IA, Zayats EA, Abramchik YA, Murashev AN, Esipov RS. Unified Methodology for the Primary Preclinical In Vivo Screening of New Anticoagulant Pharmaceutical Agents from Hematophagous Organisms. Int J Mol Sci 2024; 25:3986. [PMID: 38612796 PMCID: PMC11011928 DOI: 10.3390/ijms25073986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 03/29/2024] [Accepted: 03/30/2024] [Indexed: 04/14/2024] Open
Abstract
The development of novel anticoagulants requires a comprehensive investigational approach that is capable of characterizing different aspects of antithrombotic activity. The necessary experiments include both in vitro assays and studies on animal models. The required in vivo approaches include the assessment of pharmacokinetic and pharmacodynamic profiles and studies of hemorrhagic and antithrombotic effects. Comparison of anticoagulants with different mechanisms of action and administration types requires unification of the experiment scheme and its adaptation to existing laboratory conditions. The rodent thrombosis models in combination with the assessment of hemostasis parameters and hematological analysis are the classic methods for conducting preclinical studies. We report an approach for the comparative study of the activity of different anticoagulants in vivo, including the investigation of pharmacodynamics and the assessment of hemorrhagic effects (tail-cut bleeding model) and pathological thrombus formation (inferior vena cava stenosis model of venous thrombosis). The reproducibility and uniformity of our set of experiments were illustrated on unfractionated heparin and dabigatran etexilate (the most common pharmaceuticals in antithrombic therapy) as comparator drugs and an experimental drug variegin from the tick Amblyomma variegatum. Variegin is notorious since it is a potential analogue of bivalirudin (Angiomax, Novartis AG, Basel, Switzerland), which is now being actively introduced into antithrombotic therapy.
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Affiliation(s)
- Maria A. Kostromina
- Laboratory of Biopharmaceutical Technologies, Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya Street, 16/10, 117997 Moscow, Russia
| | - Elena A. Tukhovskaya
- Biological Testing Laboratory, Branch of Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Pushchino, ProspektNauki, 6, 142290 Moscow, Russia
| | - Elvira R. Shaykhutdinova
- Biological Testing Laboratory, Branch of Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Pushchino, ProspektNauki, 6, 142290 Moscow, Russia
| | - Yuliya A. Palikova
- Biological Testing Laboratory, Branch of Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Pushchino, ProspektNauki, 6, 142290 Moscow, Russia
| | - Viktor A. Palikov
- Biological Testing Laboratory, Branch of Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Pushchino, ProspektNauki, 6, 142290 Moscow, Russia
| | - Gulsara A. Slashcheva
- Biological Testing Laboratory, Branch of Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Pushchino, ProspektNauki, 6, 142290 Moscow, Russia
| | - Alina M. Ismailova
- Biological Testing Laboratory, Branch of Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Pushchino, ProspektNauki, 6, 142290 Moscow, Russia
| | - Irina N. Kravchenko
- Biological Testing Laboratory, Branch of Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Pushchino, ProspektNauki, 6, 142290 Moscow, Russia
| | - Igor A. Dyachenko
- Biological Testing Laboratory, Branch of Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Pushchino, ProspektNauki, 6, 142290 Moscow, Russia
| | - Evgeniy A. Zayats
- Laboratory of Biopharmaceutical Technologies, Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya Street, 16/10, 117997 Moscow, Russia
| | - Yuliya A. Abramchik
- Laboratory of Biopharmaceutical Technologies, Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya Street, 16/10, 117997 Moscow, Russia
| | - Arkady N. Murashev
- Biological Testing Laboratory, Branch of Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Pushchino, ProspektNauki, 6, 142290 Moscow, Russia
| | - Roman S. Esipov
- Laboratory of Biopharmaceutical Technologies, Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya Street, 16/10, 117997 Moscow, Russia
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Eisenhofer R, Nesme J, Santos-Bay L, Koziol A, Sørensen SJ, Alberdi A, Aizpurua O. A comparison of short-read, HiFi long-read, and hybrid strategies for genome-resolved metagenomics. Microbiol Spectr 2024; 12:e0359023. [PMID: 38451230 DOI: 10.1128/spectrum.03590-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Accepted: 02/11/2024] [Indexed: 03/08/2024] Open
Abstract
Shotgun metagenomics enables the reconstruction of complex microbial communities at a high level of detail. Such an approach can be conducted using both short-read and long-read sequencing data, as well as a combination of both. To assess the pros and cons of these different approaches, we used 22 fecal DNA extracts collected weekly for 11 weeks from two respective lab mice to study seven performance metrics over four combinations of sequencing depth and technology: (i) 20 Gbp of Illumina short-read data, (ii) 40 Gbp of short-read data, (iii) 20 Gbp of PacBio HiFi long-read data, and (iv) 40 Gbp of hybrid (20 Gbp of short-read +20 Gbp of long-read) data. No strategy was best for all metrics; instead, each one excelled across different metrics. The long-read approach yielded the best assembly statistics, with the highest N50 and lowest number of contigs. The 40 Gbp short-read approach yielded the highest number of refined bins. Finally, the hybrid approach yielded the longest assemblies and the highest mapping rate to the bacterial genomes. Our results suggest that while long-read sequencing significantly improves the quality of reconstructed bacterial genomes, it is more expensive and requires deeper sequencing than short-read approaches to recover a comparable amount of reconstructed genomes. The most optimal strategy is study-specific and depends on how researchers assess the trade-off between the quantity and quality of recovered genomes.IMPORTANCEMice are an important model organism for understanding the gut microbiome. When studying these gut microbiomes using DNA techniques, researchers can choose from technologies that use short or long DNA reads. In this study, we perform an extensive benchmark between short- and long-read DNA sequencing for studying mice gut microbiomes. We find that no one approach was best for all metrics and provide information that can help guide researchers in planning their experiments.
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Affiliation(s)
- Raphael Eisenhofer
- Center for Evolutionary Hologenomics, Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | - Joseph Nesme
- Section of Microbiology, Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Luisa Santos-Bay
- Center for Evolutionary Hologenomics, Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | - Adam Koziol
- Center for Evolutionary Hologenomics, Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | - Søren Johannes Sørensen
- Section of Microbiology, Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Antton Alberdi
- Center for Evolutionary Hologenomics, Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | - Ostaizka Aizpurua
- Center for Evolutionary Hologenomics, Globe Institute, University of Copenhagen, Copenhagen, Denmark
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27
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van Gerwen MA, Rodenburg TB, Arndt SS, Meerburg BG, Meijboom FL. Attitudes of clients of Dutch pest controllers towards integrated pest management (IPM) and preventive measures in relation to rodent nuisance. Pest Manag Sci 2024. [PMID: 38563486 DOI: 10.1002/ps.8113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 03/26/2024] [Accepted: 04/02/2024] [Indexed: 04/04/2024]
Abstract
BACKGROUND Rodent management with lethal methods (e.g., rodenticides) comes with downsides for rodent welfare, the environment and non-target species. To reduce chemical use and prevent rodent nuisance, pest controllers in the Netherlands must work according to the principles of integrated pest management (IPM). A condition for the success of IPM is that there is sufficient engagement of all parties involved, including clients of pest controllers. The aim of this study was to gain insight into the attitudes of clients regarding rodent control, IPM and the application of preventive measures. Insight into their attitudes may contribute to a better implementation of IPM and with that to a more sustainable rodent management based on more effective prevention. An online survey among 248 clients of Dutch pest controllers from both the agricultural and other sectors was carried out. RESULTS Respondents from the agricultural sector had a relatively negative attitude towards IPM, the new IPM regulations in the Netherlands and had little confidence in prevention. In other sectors, respondents were more positive about IPM and had more confidence in prevention. The respondents from the latter subgroup had a similar attitude compared to Dutch pest controllers who participated in a previous survey. CONCLUSION The findings of the study provide information for the further development and practical implementation of IPM and preventive measures and with that a more sustainable and animal friendly rodent management. They can also be helpful for a better communication and cooperation between pest controllers and their clients. © 2024 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Maite Aam van Gerwen
- Centre for Sustainable Animal Stewardship, Division of Animals in Science and Society, Department Population Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - T Bas Rodenburg
- Division of Animals in Science and Society, Department Population Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Saskia S Arndt
- Division of Animals in Science and Society, Department Population Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Bastiaan G Meerburg
- Wageningen Livestock Research, Wageningen University & Research, Wageningen, The Netherlands
- Dutch Pest & Wildlife Expertise Centre (Stichting Kennis- en Adviescentrum Dierplagen, KAD), Wageningen, The Netherlands
| | - Franck Lb Meijboom
- Centre for Sustainable Animal Stewardship, Division of Animals in Science and Society, Department Population Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
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Zheng Z, Li H, Zhang Z, Zhai X, Qin H. Study on the underlying molecular mechanism of benzene-induced nervous system damage in mice based on tandem mass tag (TMT) proteomics. Toxicol Res (Camb) 2024; 13:tfae036. [PMID: 38496383 PMCID: PMC10940121 DOI: 10.1093/toxres/tfae036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 02/13/2024] [Accepted: 02/22/2024] [Indexed: 03/19/2024] Open
Abstract
Benzene is known to be a common toxic industrial chemical, and prolonged benzene exposure may cause nervous system damage. At present, there were few studies on benzene-induced neurological damage. This research aimed to identify the protein biomarkers to explore the mechanism of nervous system damage caused by benzene. We established a benzene poisoning model of C57 mice by gavage of benzene-peanut oil suspension and identified differentially expressed proteins (DEPs) in brain tissue using tandem mass tag (TMT) proteomics. The results showed a significant weight loss and decrease in leukocyte and neutrophil counts in benzene poisoning mice compared to the control group. We also observed local cerebral oedema and small vessel occlusion in the cerebral white matter of benzene poisoning mice. TMT proteomic results showed that a total 6,985 proteins were quantified, with a fold change (FC) > 1.2 (or < 1/1.2) and P value <0.05 were considered as DEPs. Compared with the control group, we identified 43 DEPs, comprising 14 upregulated and 29 downregulated proteins. Kyoto encyclopedia of genes and genomes (KEGG) pathway analysis results showed that the candidate proteins were mainly involved in cholesterol metabolism, complement and coagulation cascades, african trypanosomiasis, PPAR signaling pathway, and vitamin digestion and absorption. Three proteins, 2-hydroxyacylsphingosine 1-beta-galactosyltransferase (UGT8), Apolipoprotein A-I (APOA1) and Complement C3 (C3) were validated using immunoblotting and immunohistochemical. In conclusion, our study preliminarily investigated the mechanism of benzene toxicity to the nervous system by analyzing DEPs changes in the brain.
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Affiliation(s)
- Zhe Zheng
- College of Basic Medicine and Forensic Medicine, Henan University of Science and Technology, 263, Kaiyuan Avenue, Luoyang 471023, Henan, China
| | - Hongwei Li
- College of Basic Medicine and Forensic Medicine, Henan University of Science and Technology, 263, Kaiyuan Avenue, Luoyang 471023, Henan, China
| | - Zhenqian Zhang
- College of Basic Medicine and Forensic Medicine, Henan University of Science and Technology, 263, Kaiyuan Avenue, Luoyang 471023, Henan, China
| | - Xiandun Zhai
- College of Basic Medicine and Forensic Medicine, Henan University of Science and Technology, 263, Kaiyuan Avenue, Luoyang 471023, Henan, China
| | - Haojie Qin
- College of Basic Medicine and Forensic Medicine, Henan University of Science and Technology, 263, Kaiyuan Avenue, Luoyang 471023, Henan, China
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Shen Y, Lotenberg K, Zaworski J, Broeker KAE, Vasseur F, Louedec L, Placier S, Frère P, Verpont MC, Galichon P, Buob D, Hadchouel J, Terzi F, Chatziantoniou C, Calmont A. Neuropilin-1 regulates renin synthesis in juxtaglomerular cells. J Physiol 2024; 602:1815-1833. [PMID: 38381008 DOI: 10.1113/jp285422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 02/06/2024] [Indexed: 02/22/2024] Open
Abstract
Renin is the key enzyme of the systemic renin-angiotensin-aldosterone system, which plays an essential role in regulating blood pressure and maintaining electrolyte and extracellular volume homeostasis. Renin is mainly produced and secreted by specialized juxtaglomerular (JG) cells in the kidney. In the present study, we report for the first time that the conserved transmembrane receptor neuropilin-1 (NRP1) participates in the development of JG cells and plays a key role in renin production. We used the myelin protein zero-Cre (P0-Cre) to abrogate Nrp1 constitutively in P0-Cre lineage-labelled cells of the kidney. We found that the P0-Cre precursor cells differentiate into renin-producing JG cells. We employed a lineage-tracing strategy combined with RNAscope quantification and metabolic studies to reveal a cell-autonomous role for NRP1 in JG cell function. Nrp1-deficient animals displayed abnormal levels of tissue renin expression and failed to adapt properly to a homeostatic challenge to sodium balance. These findings provide new insights into cell fate decisions and cellular plasticity operating in P0-Cre-expressing precursors and identify NRP1 as a novel key regulator of JG cell maturation. KEY POINTS: Renin is a centrepiece of the renin-angiotensin-aldosterone system and is produced by specialized juxtaglomerular cells (JG) of the kidney. Neuropilin-1 (NRP1) is a conserved membrane-bound receptor that regulates vascular and neuronal development, cancer aggressiveness and fibrosis progression. We used conditional mutagenesis and lineage tracing to show that NRP1 is expressed in JG cells where it regulates their function. Cell-specific Nrp1 knockout mice present with renin paucity in JG cells and struggle to adapt to a homeostatic challenge to sodium balance. The results support the versatility of renin-producing cells in the kidney and may open new avenues for therapeutic approaches.
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Affiliation(s)
- Yunzhu Shen
- Sorbonne Université, INSERM, Unité mixte de Recherche 1155, Kidney Research Centre, Hôpital Tenon, Paris, France
| | - Kenza Lotenberg
- Sorbonne Université, INSERM, Unité mixte de Recherche 1155, Kidney Research Centre, Hôpital Tenon, Paris, France
| | - Jeremy Zaworski
- Sorbonne Université, INSERM, Unité mixte de Recherche 1155, Kidney Research Centre, Hôpital Tenon, Paris, France
| | | | - Florence Vasseur
- Institut Necker Enfants Malades, Growth and Signalling departement, Université Paris Cité, INSERM U1151, CNRS UMR 8253, Paris, France
| | - Liliane Louedec
- Sorbonne Université, INSERM, Unité mixte de Recherche 1155, Kidney Research Centre, Hôpital Tenon, Paris, France
| | - Sandrine Placier
- Sorbonne Université, INSERM, Unité mixte de Recherche 1155, Kidney Research Centre, Hôpital Tenon, Paris, France
| | - Perrine Frère
- Sorbonne Université, INSERM, Unité mixte de Recherche 1155, Kidney Research Centre, Hôpital Tenon, Paris, France
| | - Marie-Christine Verpont
- Sorbonne Université, INSERM, Unité mixte de Recherche 1155, Kidney Research Centre, Hôpital Tenon, Paris, France
| | - Pierre Galichon
- Sorbonne Université, INSERM, Unité mixte de Recherche 1155, Kidney Research Centre, Hôpital Tenon, Paris, France
| | - David Buob
- Sorbonne Université, INSERM, Unité mixte de Recherche 1155, Kidney Research Centre, Hôpital Tenon, Paris, France
| | - Juliette Hadchouel
- Sorbonne Université, INSERM, Unité mixte de Recherche 1155, Kidney Research Centre, Hôpital Tenon, Paris, France
| | - Fabiola Terzi
- Institut Necker Enfants Malades, Growth and Signalling departement, Université Paris Cité, INSERM U1151, CNRS UMR 8253, Paris, France
| | - Christos Chatziantoniou
- Sorbonne Université, INSERM, Unité mixte de Recherche 1155, Kidney Research Centre, Hôpital Tenon, Paris, France
| | - Amélie Calmont
- Sorbonne Université, INSERM, Unité mixte de Recherche 1155, Kidney Research Centre, Hôpital Tenon, Paris, France
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Tanaka T. Biological and environmental factors influencing reproductive performance in ICR mice, Mus musculus. Birth Defects Res 2024; 116:e2337. [PMID: 38613401 DOI: 10.1002/bdr2.2337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Revised: 03/21/2024] [Accepted: 03/28/2024] [Indexed: 04/14/2024]
Abstract
BACKGROUND Since strain names and breeding facilities of ICR mice used in 37 reproductive toxicity studies have changed from 1990 to 2022 in our laboratory, biological and environmental factors that affect reproductive parameters were investigated in control mice to examine the validity of the background data. METHODS Litter size and sex ratio were measured at birth [postnatal day (PND) 0], while offspring body weight was measured on PND 0 and 21 during the lactation. The relationships between biological and environmental factors and reproductive parameters were assessed with multiple regression analysis using stepwise regression as an explanatory variable selection strategy. The biological factors of litter size at birth, secondary sex ratio (male%), body weight (g) at birth and strain name, and environmental factors of facilities (room), temperature/humidity, and bedding materials were used as explanatory variables, and reproductive parameters of litter size at birth, secondary sex ratio (male%), body weight (g) at birth, and survival index (%) of offspring at PND 21 were used as response variables. RESULTS No significant effects were indicated in litter size and sex ratio (male %) with any biological and environmental factors. Male and female offspring weights were significantly affected by strain names. No significant effects were indicated in the survival index (%) at PND 21 in both sexes with any biological and environmental factors. CONCLUSIONS Litter size and sex ratio in this report are sufficient as background data throughout the period because no significant variables of biological and environmental factors affected litter size and gender composition.
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Affiliation(s)
- Toyohito Tanaka
- Division of Toxicology, Department of Pharmaceutical and Environmental Sciences, Tokyo Metropolitan Institute of Public Health, Tokyo, Japan
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Lazzarini G, Gatta A, Miragliotta V, Vaglini F, Viaggi C, Pirone A. Glial cells are affected more than interneurons by the loss of Engrailed 2 gene in the mouse cerebellum. J Anat 2024; 244:667-675. [PMID: 38009365 PMCID: PMC10941518 DOI: 10.1111/joa.13982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 11/10/2023] [Accepted: 11/14/2023] [Indexed: 11/28/2023] Open
Abstract
Glial cells play a pivotal role in the inflammatory processes, which are common features of several neurodevelopmental and neurodegenerative disorders. Their major role in modulating neuroinflammation underscores their significance in these conditions. Engrailed-2 knockout mice (En2-/- ) are considered a valuable model for autism spectrum disorder (ASD) due to their distinctive neuroanatomical and behavioral traits. Given the higher prevalence of ASD in males, our objective was to investigate glial and interneuron alterations in the cerebellum of En2-/- mice compared with wild-type (WT) mice in both sexes. We employed immunohistochemical analysis to assess cell density for all cell types studied and analyzed the area (A) and shape factor (SF) of microglia cell bodies. Our findings revealed the following: (a) In WT mice, the density of microglia and astrocytes was higher in females than in males, while interneuron density was lower in females. Notably, in En2-mutant mice, these differences between males and females were not present. (b) In both male and female En2-/- mice, astrocyte density exceeded that in WT mice, with microglia density being greater only in females. (c) In WT females, microglia cell bodies exhibited a larger area and a lower shape factor compared to WT males. Remarkably, the En2 mutation did not appear to influence these sex-related differences. (d) In both male and female En2-/- mice, we observed a consistent pattern: microglia cell bodies displayed a larger area and a smaller shape factor. Given the ongoing debate surrounding the roles of glia and sex-related factors in ASD, our observations provide valuable insights into understanding how an ASD-associated gene En2 affects specific cell types in the cerebellum.
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Affiliation(s)
| | | | | | - Francesca Vaglini
- Department of Translational Research and of New Surgical and Medical TechnologiesUniversity of PisaPisaItaly
| | - Cristina Viaggi
- Department of Translational Research and of New Surgical and Medical TechnologiesUniversity of PisaPisaItaly
| | - Andrea Pirone
- Department of Veterinary SciencesUniversity of PisaPisaItaly
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Campos-Ordoñez T, Buriticá J. Assessment of the inbred C57BL/6 and outbred CD1 mouse strains using a progressive ratio schedule during development. Physiol Behav 2024; 277:114485. [PMID: 38336087 DOI: 10.1016/j.physbeh.2024.114485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/26/2024] [Accepted: 02/06/2024] [Indexed: 02/12/2024]
Abstract
Inbred strains have a genetic similarity of at least 98.6% compared to their outbred counterparts. Several studies have shown that inbred C57BL/6 mice and outbred ICR (CD1) mice differ in locomotion, cognitive flexibility, and aggression. However, their performance in operant paradigms is not well understood. A progressive ratio (PR) schedule of reinforcement is a method of quantitative estimation of the incentive state of an animal for a reward by increasing response requirements for reinforcer delivery, which is relevant to assess the breakpoint (amount of response effort an animal is willing to invest for a single unit of reward). This study tested male and female C57BL/6 and CD1 mice with an open field to analyze locomotion. Then, we used conditioning chambers with a PR3 schedule for ten consecutive days (P30-P40). PR performance was measured with the breakpoint, and the mathematical principles of reinforcement (MPR) were used to estimate motivation, impulsivity, and motor skills to manipulate the operandum. We found that CD1 mice showed higher locomotor activity than C57BL/6 independently of sex. CD1 mice had a higher breakpoint. However, male CD1 mice gradually increased breakpoint until the last session. In the MPR model, CD1 mice showed decreased fixed paused parameter (impulsivity) than C57BL/6, independent of sex. Our data suggest that the higher breakpoint in CD1 strain may partially be related to impulsivity. Therefore, the MPR model can help identify factors that affect performances, such as motivation, impulsivity, and motor skills during a PR in adolescent CD1 and C57BL/6 mice. These findings are essential to characterize the differences in the behavioral performance between C57BL/6 and CD1 strains and their potential as animal models.
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Affiliation(s)
- Tania Campos-Ordoñez
- Departamento de Biología Celular y Molecular, Centro Universitario de Ciencias Biológicas y Agropecuarias. Universidad de Guadalajara, Jalisco 45200, México.
| | - Jonathan Buriticá
- Laboratorio de Cognición y Aprendizaje Comparado, Centro de Estudios e Investigaciones en Comportamiento, Universidad de Guadalajara, Jalisco 44130, México.
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Benvenutti L, Wolff FR, Corrêa TP, Melato J, Goldoni FC, De Faveri R, Patel YBK, de Souza JA, Grockoski HA, Nilz PM, Bombardelli CL, Remor AP, Varela KG, Costa NTC, Hernandes MZ, Lacerda MG, Rodrigues KD, Milton FA, Neves FDAR, Pereira MES, Kormann Imianowsky EC, de Campos Buzzi F, Brunaldi Marutani VH, Stoeberl LC, Correa R, Eller S, de Oliveira TF, Gonçalves TBP, da Silva RC, Passos GF, da Costa R, Santin JR, Quintão NLM. A partial agonist of PPARγ prevents paclitaxel-induced peripheral neuropathy in mice, by inhibiting neuroinflammation. Br J Pharmacol 2024; 181:1128-1149. [PMID: 37721089 DOI: 10.1111/bph.16244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 09/07/2023] [Accepted: 09/07/2023] [Indexed: 09/19/2023] Open
Abstract
BACKGROUND AND PURPOSE Chemotherapy-induced peripheral neuropathy (CIPN) is a common side effect of paclitaxel, affecting 30-50% of patients. Increased survival and concern with patients' quality of life have encouraged the search for new tools to prevent paclitaxel-induced neuropathy. This study presents the glitazone 4-[(Z)-(2,4-dioxo-1,3-thiazolidin-5-ylidene)methyl]-N-phenylbenzene-sulfonamide (TZD-A1) as a partial agonist of peroxisome proliferator-activated receptor γ (PPARγ), its toxicological profile and effects on paclitaxel-induced CIPN in mice. EXPERIMENTAL APPROACH Interactions of TZD-A1 with PPARγ were analysed using in silico docking and in vitro reporter gene assays. Pharmacokinetics and toxicity were evaluated using in silico, in vitro and in vivo (C57Bl/6 mice) analyses. Effects of TZD-A1 on CIPN were investigated in paclitaxel-injected mice. Axonal and dorsal root ganglion damage, mitochondrial complex activity and cytokine levels, brain-derived neurotrophic factor (BDNF), nuclear factor erythroid 2-related factor 2 (Nrf2) and PPARγ, were also measured. KEY RESULTS Docking analysis predicted TZD-A1 interactions with PPARγ compatible with partial agonism, which were corroborated by in vitro reporter gene assays. Good oral bioavailability and safety profile of TZD-A1 were shown in silico, in vitro and in vivo. Paclitaxel-injected mice, concomitantly treated with TZD-A1 by i.p. or oral administration, exhibited decreased mechanical and thermal hypersensitivity, effects apparently mediated by inhibition of neuroinflammation and mitochondrial damage, through increasing Nrf2 and PPARγ levels, and up-regulating BDNF. CONCLUSION AND IMPLICATIONS TZD-A1, a partial agonist of PPARγ, provided neuroprotection and reduced hypersensitivity induced by paclitaxel. Allied to its safety profile and good bioavailability, TZD-A1 is a promising drug candidate to prevent and treat CIPN in cancer patients.
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Affiliation(s)
- Larissa Benvenutti
- Postgraduate Program in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil
| | - Fellippe Ramos Wolff
- Postgraduate Program in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil
| | - Thiago Patrício Corrêa
- Postgraduate Program in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil
| | - Jessica Melato
- Postgraduate Program in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil
| | - Fernanda Capitanio Goldoni
- Postgraduate Program in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil
| | - Renata De Faveri
- Postgraduate Program in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil
| | - Yasmin Beatrisse Klein Patel
- Biomedicine, School of Health Sciences, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil
| | - Jade André de Souza
- Biomedicine, School of Health Sciences, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil
| | - Heloise Adeli Grockoski
- Biomedicine, School of Health Sciences, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil
| | - Paulo Mateus Nilz
- Pharmacy Courses, School of Health Sciences, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil
| | - Cleber Luiz Bombardelli
- Postgraduate Program in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil
| | - Aline Pertile Remor
- Postgraduate Program in Bioscience and Health, Universidade do Oeste de Santa Catarina (UNOESC), Joaçaba, Santa Catarina, Brazil
| | - Karina Giacomini Varela
- Postgraduate Program in Bioscience and Health, Universidade do Oeste de Santa Catarina (UNOESC), Joaçaba, Santa Catarina, Brazil
| | - Natáli Tereza Capistrano Costa
- Laboratório de Química Teórica e Medicinal (LQTM), Departamento de Ciências Farmacêuticas, Universidade Federal de Pernambuco (UFPE), Recife, Pernambuco, Brazil
| | - Marcelo Zaldini Hernandes
- Laboratório de Química Teórica e Medicinal (LQTM), Departamento de Ciências Farmacêuticas, Universidade Federal de Pernambuco (UFPE), Recife, Pernambuco, Brazil
| | - Mariella Guimarães Lacerda
- Laboratory of Molecular Pharmacology, Faculty of Health Sciences, University of Brasilia (UnB), Brasília, Distrito Federal, Brazil
| | - Kathlen Deruci Rodrigues
- Laboratory of Molecular Pharmacology, Faculty of Health Sciences, University of Brasilia (UnB), Brasília, Distrito Federal, Brazil
| | - Flora Aparecida Milton
- Laboratory of Molecular Pharmacology, Faculty of Health Sciences, University of Brasilia (UnB), Brasília, Distrito Federal, Brazil
| | - Francisco de Assis Rocha Neves
- Laboratory of Molecular Pharmacology, Faculty of Health Sciences, University of Brasilia (UnB), Brasília, Distrito Federal, Brazil
| | | | | | - Fátima de Campos Buzzi
- Postgraduate Program in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil
| | - Victor Hugo Brunaldi Marutani
- Laboratory of Animal Pathology, Department of Preventive Veterinary Medicine, Universidade Estadual de Londrina (UEL), Londrina, Paraná, Brazil
| | - Luis Carlos Stoeberl
- Postgraduate Program in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil
| | - Rogério Correa
- Postgraduate Program in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil
| | - Sarah Eller
- Graduate Program in Health Sciences, Federal University of Health Sciences of Porto Alegre (UFCSPA), Porto Alegre, Rio Grande do Sul, Brazil
| | - Tiago Franco de Oliveira
- Graduate Program in Health Sciences, Federal University of Health Sciences of Porto Alegre (UFCSPA), Porto Alegre, Rio Grande do Sul, Brazil
| | | | - Raquel Costa da Silva
- School of Pharmacy, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Giselle Fazzioni Passos
- School of Pharmacy, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Robson da Costa
- School of Pharmacy, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Rio de Janeiro, Brazil
| | - José Roberto Santin
- Postgraduate Program in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil
| | - Nara Lins Meira Quintão
- Postgraduate Program in Pharmaceutical Science, Universidade do Vale do Itajaí (UNIVALI), Itajaí, Santa Catarina, Brazil
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Mbs GBY, Wasek B, Bottiglieri T, Malysheva O, Caudill MA, Jadavji NM. Dietary vitamin B12 deficiency impairs motor function and changes neuronal survival and choline metabolism after ischemic stroke in middle-aged male and female mice. Nutr Neurosci 2024; 27:300-309. [PMID: 36932327 DOI: 10.1080/1028415x.2023.2188639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
Abstract
Nutrition is a modifiable risk factor for ischemic stroke. As people age their ability to absorb some nutrients decreases, a primary example is vitamin B12. Older individuals with a vitamin B12 deficiency are at a higher risk for ischemic stroke and have worse stroke outcome. However, the mechanisms through which these occur remain unknown. The aim of the study was to investigate the role of vitamin B12 deficiency in ischemic stroke outcome and mechanistic changes in a mouse model. Ten-month-old male and female mice were put on control or vitamin B12 deficient diets for 4 weeks prior to and after ischemic stroke to the sensorimotor cortex. Motor function was measured, and tissues were collected to assess potential mechanisms. All deficient mice had increased levels of total homocysteine in plasma and liver tissues. After ischemic stroke, deficient mice had impaired motor function compared to control mice. There was no difference between groups in ischemic damage volume. However, within the ischemic damage region, there was an increase in total apoptosis of male deficient mice compared to controls. Furthermore, there was an increase in neuronal survival in ischemic brain tissue of the vitamin B12 deficient mice compared to controls. Additionally, there were changes in choline metabolites in ischemic brain tissue because of a vitamin B12 deficiency. The data presented in this study confirms that a vitamin B12 deficiency worsens stroke outcome in male and female mice. The mechanisms driving this change may be a result of neuronal survival and compensation in choline metabolism within the damaged brain tissue.
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Affiliation(s)
- Gyllian B Yahn Mbs
- Department of Biomedical Sciences, Midwestern University, Glendale, AZ, USA
| | - Brandi Wasek
- Center of Metabolomics, Institute of Metabolic Disease, Baylor Scott & White Research Institute, Dallas, TX, USA
| | - Teodoro Bottiglieri
- Center of Metabolomics, Institute of Metabolic Disease, Baylor Scott & White Research Institute, Dallas, TX, USA
| | - Olga Malysheva
- Division of Nutritional Sciences, Cornell University, Ithaca, NY, USA
| | - Marie A Caudill
- Division of Nutritional Sciences, Cornell University, Ithaca, NY, USA
| | - Nafisa M Jadavji
- Department of Biomedical Sciences, Midwestern University, Glendale, AZ, USA
- College of Veterinary Medicine, Midwestern University, Glendale, AZ, USA
- College of Osteopathic Medicine, Midwestern University, Glendale, AZ, USA
- Department of Neuroscience, Carleton University, Ottawa, Canada
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Reisi-Vanani V, Lorigooini Z, Bijad E, Amini-Khoei H. Maternal separation stress through triggering of the neuro-immune response in the hippocampus induces autistic-like behaviors in male mice. Int J Dev Neurosci 2024; 84:87-98. [PMID: 38110192 DOI: 10.1002/jdn.10310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 10/28/2023] [Accepted: 12/01/2023] [Indexed: 12/20/2023] Open
Abstract
Autism spectrum disorder (ASD) is the fastest-growing neurodevelopmental disease throughout the world. Neuro-immune responses from prenatal to adulthood stages of life induce developmental defects in synaptic signaling, neurotransmitter imbalance, and even structural changes in the brain. In this study, we aimed to focus on the possible role of neuroinflammatory response in the hippocampus in development of the autistic-like behaviors following maternal separation (MS) stress in mice. To do this, mice neonates daily separated from their mothers from postnatal day (PND) 2 to PND 14 for 3 h. During PND45-60, behavioral tests related to autistic-like behaviors including three-chamber sociability, Morris water maze (MWM), shuttle box, resident-intruder, and marble burying tests were performed. Then, hippocampi were dissected out, and the gene expression of inflammatory mediators including TNF-α, IL-1β, TLR4, HMGB1, and NLRP3 was assessed in the hippocampus using RT-PCR. Results showed that MS mice exerted impaired sociability preference, repetitive behaviors, impaired passive avoidance, and spatial memories. The gene expression of inflammatory mediators significantly increased in the hippocampi of MS mice. We concluded that MS stress probably via activating of the HMGB1/TLR4 signaling cascade in the hippocampus induced autistic-like behaviors in mice.
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Affiliation(s)
- Vahid Reisi-Vanani
- Student Research Committee, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Zahra Lorigooini
- Medical Plants Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Elham Bijad
- Medical Plants Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Hossein Amini-Khoei
- Medical Plants Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
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Ma Y, Xiao Q, Kang C, Yuan L, Zhao Z, Wang X, Liu Q, Guo W, Wei X, Hao W. Effect of lanthanum nitrate on adipogenesis in mice. J Appl Toxicol 2024; 44:542-552. [PMID: 37908164 DOI: 10.1002/jat.4558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 10/09/2023] [Accepted: 10/10/2023] [Indexed: 11/02/2023]
Abstract
Lanthanum (La) is widely used in modern industry and agriculture because of its unique physicochemical properties and is broadly exposed in the population. Some studies have shown that La may have some effects on adipogenesis, but there is a lack of related in vivo evidence. In this study, the effects of La(NO3 )3 on adipogenesis and its associated mechanism were studied using C57BL/6J mouse model. The results showed that La(NO3 )3 exposure caused a decrease in body weight and the percentage of fat content in mice. In addition, the adipose marker molecules and specific adipogenic transcription factors decreased in both white adipose tissue (WAT) and brown adipose tissue (BAT). Detection of signaling pathway-related molecules revealed that canonical wnt/β-catenin pathway-related molecules were upregulated in both adipose tissues. In summary, in vivo exposure to La(NO3 )3 might inhibited adipogenesis in mice, possibly through upregulation of the canonical Wnt/β-catenin signaling pathway.
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Affiliation(s)
- Yuhong Ma
- Department of Toxicology, School of Public Health, Peking University, Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, China
| | - Qianqian Xiao
- Department of Toxicology, School of Public Health, Peking University, Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, China
| | - Chenping Kang
- Department of Toxicology, School of Public Health, Peking University, Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, China
| | - Lilan Yuan
- Department of Toxicology, School of Public Health, Peking University, Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, China
| | - Zhe Zhao
- Department of Toxicology, School of Public Health, Peking University, Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, China
| | - Xiaoxia Wang
- Department of Toxicology, School of Public Health, Peking University, Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, China
| | - Qianyi Liu
- Department of Toxicology, School of Public Health, Peking University, Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, China
| | - Wanqian Guo
- Department of Toxicology, School of Public Health, Peking University, Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, China
| | - Xuetao Wei
- Department of Toxicology, School of Public Health, Peking University, Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, China
| | - Weidong Hao
- Department of Toxicology, School of Public Health, Peking University, Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, 100191, China
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Al Dala Ali M, Longepied G, Nicolet A, Metzler-Guillemain C, Mitchell MJ. Spermatozoa in mice lacking the nucleoporin NUP210L show defects in head shape and motility but not in nuclear compaction or histone replacement. Clin Genet 2024; 105:364-375. [PMID: 38129135 DOI: 10.1111/cge.14468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 11/24/2023] [Accepted: 11/27/2023] [Indexed: 12/23/2023]
Abstract
Biallelic loss-of-function mutation of NUP210L, encoding a testis-specific nucleoporin, has been reported in an infertile man whose spermatozoa show uncondensed heads and histone retention. Mice with a homozygous transgene intronic insertion in Nup210l were infertile but spermatozoa had condensed heads. Expression from this insertion allele is undefined, however, and residual NUP210L production could underlie the milder phenotype. To resolve this issue, we have created Nup210lem1Mjmm , a null allele of Nup210l, in the mouse. Nup210lem1Mjmm homozygotes show uniform mild anomalies of sperm head morphology and decreased motility, but nuclear compaction and histone removal appear unaffected. Thus, our mouse model does not support that NUP210L loss alone blocks spermatid nuclear compaction. Re-analyzing the patient's exome data, we identified a rare, potentially pathogenic, heterozygous variant in nucleoporin gene NUP153 (p.Pro485Leu), and showed that, in mouse and human, NUP210L and NUP153 colocalize at the caudal nuclear pole in elongating spermatids and spermatozoa. Unexpectedly, in round spermatids, NUP210L and NUP153 localisation differs between mouse (nucleoplasm) and human (nuclear periphery). Our data suggest two explanations for the increased phenotypic severity associated with NUP210L loss in human compared to mouse: a genetic variant in human NUP153 (p.Pro485Leu), and inter-species divergence in nuclear pore function in round spermatids.
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Affiliation(s)
- Maha Al Dala Ali
- Aix Marseille University, Inserm, MMG, Marseille, France
- College of Medicine, Al-Iraqia University, Baghdad, Iraq
| | - Guy Longepied
- Aix Marseille University, Inserm, MMG, Marseille, France
| | - Aurore Nicolet
- Aix Marseille University, Inserm, MMG, Marseille, France
| | - Catherine Metzler-Guillemain
- Aix Marseille University, Inserm, MMG, Marseille, France
- AP-HM, Pôle Femmes-Parents-Enfants, Centre Clinico-biologique AMP-CECOS, Marseille Cedex 5, France
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Wu W, Jin Q, Östlund C, Tanji K, Shin JY, Han J, Leu CS, Kushner J, Worman HJ. mTOR Inhibition Prolongs Survival and Has Beneficial Effects on Heart Function After Onset of Lamin A/C Gene Mutation Cardiomyopathy in Mice. Circ Heart Fail 2024; 17:e011110. [PMID: 38567527 PMCID: PMC11008450 DOI: 10.1161/circheartfailure.123.011110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 02/12/2024] [Indexed: 04/04/2024]
Abstract
BACKGROUND Mutations in LMNA encoding nuclear envelope proteins lamin A/C cause dilated cardiomyopathy. Activation of the AKT/mTOR (RAC-α serine/threonine-protein kinase/mammalian target of rapamycin) pathway is implicated as a potential pathophysiologic mechanism. The aim of this study was to assess whether pharmacological inhibition of mTOR signaling has beneficial effects on heart function and prolongs survival in a mouse model of the disease, after onset of heart failure. METHODS We treated male LmnaH222P/H222P mice, after the onset of heart failure, with placebo or either of 2 orally bioavailable mTOR inhibitors: everolimus or NV-20494, a rapamycin analog highly selective against mTORC1. We examined left ventricular remodeling, and the cell biological, biochemical, and histopathologic features of cardiomyopathy, potential drug toxicity, and survival. RESULTS Everolimus treatment (n=17) significantly reduced left ventricular dilatation and increased contractility on echocardiography, with a 7% (P=0.018) reduction in left ventricular end-diastolic diameter and a 39% (P=0.0159) increase fractional shortening compared with placebo (n=17) after 6 weeks of treatment. NV-20494 treatment (n=15) yielded similar but more modest and nonsignificant changes. Neither drug prevented the development of cardiac fibrosis. Drug treatment reactivated suppressed autophagy and inhibited mTORC1 signaling in the heart, although everolimus was more potent. With regards to drug toxicity, everolimus alone led to a modest degree of glucose intolerance during glucose challenge. Everolimus (n=20) and NV-20494 (n=20) significantly prolonged median survival in LmnaH222P/H222P mice, by 9% (P=0.0348) and 11% (P=0.0206), respectively, compared with placebo (n=20). CONCLUSIONS These results suggest that mTOR inhibitors may be beneficial in patients with cardiomyopathy caused by LMNA mutations and that further study is warranted.
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Affiliation(s)
- Wei Wu
- Department of Medicine, Vagelos College of Physicians and Surgeons, (W.W., Q.J., C.Ö., J.-Y.S., J.K., H.J.W.), Columbia University, New York, NY
- Department of Pathology and Cell Biology, Vagelos College of Physicians and Surgeons (W.W., Q.J., C.Ö., K.T., H.J.W.), Columbia University, New York, NY
| | - Qi Jin
- Department of Medicine, Vagelos College of Physicians and Surgeons, (W.W., Q.J., C.Ö., J.-Y.S., J.K., H.J.W.), Columbia University, New York, NY
- Department of Pathology and Cell Biology, Vagelos College of Physicians and Surgeons (W.W., Q.J., C.Ö., K.T., H.J.W.), Columbia University, New York, NY
| | - Cecilia Östlund
- Department of Medicine, Vagelos College of Physicians and Surgeons, (W.W., Q.J., C.Ö., J.-Y.S., J.K., H.J.W.), Columbia University, New York, NY
- Department of Pathology and Cell Biology, Vagelos College of Physicians and Surgeons (W.W., Q.J., C.Ö., K.T., H.J.W.), Columbia University, New York, NY
| | - Kurenai Tanji
- Department of Pathology and Cell Biology, Vagelos College of Physicians and Surgeons (W.W., Q.J., C.Ö., K.T., H.J.W.), Columbia University, New York, NY
| | - Ji-Yeon Shin
- Department of Medicine, Vagelos College of Physicians and Surgeons, (W.W., Q.J., C.Ö., J.-Y.S., J.K., H.J.W.), Columbia University, New York, NY
| | - Jiying Han
- Department of Biostatistics, Mailman School of Public Health (J.H., C.-S.L.), Columbia University, New York, NY
| | - Cheng-Shiun Leu
- Department of Biostatistics, Mailman School of Public Health (J.H., C.-S.L.), Columbia University, New York, NY
| | - Jared Kushner
- Department of Medicine, Vagelos College of Physicians and Surgeons, (W.W., Q.J., C.Ö., J.-Y.S., J.K., H.J.W.), Columbia University, New York, NY
| | - Howard J. Worman
- Department of Medicine, Vagelos College of Physicians and Surgeons, (W.W., Q.J., C.Ö., J.-Y.S., J.K., H.J.W.), Columbia University, New York, NY
- Department of Pathology and Cell Biology, Vagelos College of Physicians and Surgeons (W.W., Q.J., C.Ö., K.T., H.J.W.), Columbia University, New York, NY
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Nivinsky Margalit S, Slovin H. Encoding luminance surfaces in the visual cortex of mice and monkeys: difference in responses to edge and center. Cereb Cortex 2024; 34:bhae165. [PMID: 38652553 DOI: 10.1093/cercor/bhae165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 03/23/2024] [Accepted: 03/27/2024] [Indexed: 04/25/2024] Open
Abstract
Luminance and spatial contrast provide information on the surfaces and edges of objects. We investigated neural responses to black and white surfaces in the primary visual cortex (V1) of mice and monkeys. Unlike primates that use their fovea to inspect objects with high acuity, mice lack a fovea and have low visual acuity. It thus remains unclear whether monkeys and mice share similar neural mechanisms to process surfaces. The animals were presented with white or black surfaces and the population responses were measured at high spatial and temporal resolution using voltage-sensitive dye imaging. In mice, the population response to the surface was not edge-dominated with a tendency to center-dominance, whereas in monkeys the response was edge-dominated with a "hole" in the center of the surface. The population response to the surfaces in both species exhibited suppression relative to a grating stimulus. These results reveal the differences in spatial patterns to luminance surfaces in the V1 of mice and monkeys and provide evidence for a shared suppression process relative to grating.
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Affiliation(s)
- Shany Nivinsky Margalit
- The Gonda Multidisciplinary Brain Research Center, Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Hamutal Slovin
- The Gonda Multidisciplinary Brain Research Center, Bar-Ilan University, Ramat Gan 5290002, Israel
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Hiyoshi T, Nishime C, Nishinaka E, Seki F, Kawai K, Mochizuki M, Urano K, Imai T, Yamamoto T, Suzuki M. Induction of lung lesions by bronchial administration using bronchoscope technique in mice. J Toxicol Pathol 2024; 37:93-97. [PMID: 38584970 PMCID: PMC10995434 DOI: 10.1293/tox.2023-0123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 01/30/2024] [Indexed: 04/09/2024] Open
Abstract
This study aimed to establish an exposure method that can induce homogeneous lesions with minimal inter-individual variability. The distribution of lesions induced by bleomycin (BLM) administration was also analyzed. C57BL mice were intrabronchially administered 20 µL of BLM (3 mg/mL) using a bronchoscope in the left or right bronchus. The mice were sacrificed 14 days after administration, and their lungs were evaluated histopathologically. BLM-induced inflammatory lesions were widely observed in the lungs. In the left bronchus-treated group, lesions were uniformly observed throughout the lobe, and no individual differences were noted. Meanwhile, in the right bronchus-treated group, individual differences in the distribution of the pulmonary lesions were observed. The distribution of lesions differed among the four lobes of the right lung owing to their anatomical features. Administration into the left bronchus is recommended for highly homogeneous lung exposure and for establishing models that contribute to highly accurate toxicity and efficacy evaluations.
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Affiliation(s)
- Takako Hiyoshi
- Translational Research Division, Central Institute for
Experimental Medical and Life Science, 25-12-3 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa
210-0821, Japan
- CLEA Japan Inc., 4839-23 Kitayama, Fujinomiya, Shizuoka
418-0112, Japan
| | - Chiyoko Nishime
- Translational Research Division, Central Institute for
Experimental Medical and Life Science, 25-12-3 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa
210-0821, Japan
| | - Eiko Nishinaka
- Translational Research Division, Central Institute for
Experimental Medical and Life Science, 25-12-3 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa
210-0821, Japan
| | - Fumiko Seki
- Bioimaging Center, Central Institute for Experimental
Medical and Life Science, 25-12-3 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa 210-0821,
Japan
| | - Kenji Kawai
- Translational Research Division, Central Institute for
Experimental Medical and Life Science, 25-12-3 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa
210-0821, Japan
| | - Misa Mochizuki
- Translational Research Division, Central Institute for
Experimental Medical and Life Science, 25-12-3 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa
210-0821, Japan
| | - Koji Urano
- Translational Research Division, Central Institute for
Experimental Medical and Life Science, 25-12-3 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa
210-0821, Japan
| | - Toshio Imai
- Translational Research Division, Central Institute for
Experimental Medical and Life Science, 25-12-3 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa
210-0821, Japan
| | - Taichi Yamamoto
- Translational Research Division, Central Institute for
Experimental Medical and Life Science, 25-12-3 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa
210-0821, Japan
| | - Masami Suzuki
- Translational Research Division, Central Institute for
Experimental Medical and Life Science, 25-12-3 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa
210-0821, Japan
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Jiang N, Cheng CJ, Liu Q, Strong R, Gelfond J, Nelson JF. Deciphering the Timing and Impact of Life-extending Drugs: A Novel Analytic Approach that Differentiates Early, Midlife, and Senescence Phase Efficacies. bioRxiv 2024:2024.03.27.585737. [PMID: 38586027 PMCID: PMC10996648 DOI: 10.1101/2024.03.27.585737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Evidence that life-extending interventions are not uniformly effective across the lifespan calls for an analytic tool that can estimate age-specific treatment effects on mortality hazards. Here we report such a tool, applying it to mouse data from 42 agents tested in the NIA Interventions Testing Program. This tool identified agents that either reduced (22) or increased (16) mortality hazards or did both (6), all with marked variation in the duration of efficacy and magnitude of effect size. Only 7 reduced mortality hazards after the 90% mortality, when the burden of senescence is greatest. Sex differences were apparent in all parameters. This new analytic tool complements the commonly used log-rank test. It detects more potential life-extending candidates (22 versus 10) and indicates when during the life course they are effective. It also uncovers adverse effects. Most importantly, it identifies agents that specifically reduce mortality hazards during the senescent phase of life.
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Affiliation(s)
- Nisi Jiang
- The Sam and Ann Barshop Institute for Longevity and Aging Studies, UT Health San Antonio; San Antonio, TX, U.S.A
- Department of Cellular and Integrative Physiology, UT Health San Antonio; San Antonio, TX, U.S.A
| | - Catherine J. Cheng
- The Sam and Ann Barshop Institute for Longevity and Aging Studies, UT Health San Antonio; San Antonio, TX, U.S.A
- Department of Cellular and Integrative Physiology, UT Health San Antonio; San Antonio, TX, U.S.A
| | - Qianqian Liu
- Department of Population Health Sciences, UT Health San Antonio; San Antonio, TX, U.S.A
| | - Randy Strong
- The Sam and Ann Barshop Institute for Longevity and Aging Studies, UT Health San Antonio; San Antonio, TX, U.S.A
- Department of Pharmacology, UT Health San Antonio; San Antonio, TX, U.S.A
- South Texas Veterans Health Care System, San Antonio, TX, U.S.A
| | - Jonathan Gelfond
- The Sam and Ann Barshop Institute for Longevity and Aging Studies, UT Health San Antonio; San Antonio, TX, U.S.A
- Department of Population Health Sciences, UT Health San Antonio; San Antonio, TX, U.S.A
| | - James F. Nelson
- The Sam and Ann Barshop Institute for Longevity and Aging Studies, UT Health San Antonio; San Antonio, TX, U.S.A
- Department of Cellular and Integrative Physiology, UT Health San Antonio; San Antonio, TX, U.S.A
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Sun X, Lee HC, Lu T. Sorbs2 Deficiency and Vascular BK Channelopathy in Diabetes. Circ Res 2024; 134:858-871. [PMID: 38362769 PMCID: PMC10978258 DOI: 10.1161/circresaha.123.323538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 02/02/2024] [Indexed: 02/17/2024]
Abstract
BACKGROUND Vascular large conductance Ca2+-activated K+ (BK) channel, composed of the α-subunit (BK-α) and the β1-subunit (BK-β1), is a key determinant of coronary vasorelaxation and its function is impaired in diabetic vessels. However, our knowledge of diabetic BK channel dysregulation is incomplete. The Sorbs2 (Sorbin homology [SoHo] and Src homology 3 [SH3] domains-containing protein 2), is ubiquitously expressed in arteries, but its role in vascular pathophysiology is unknown. METHODS The role of Sorbs2 in regulating vascular BK channel activity was determined using patch-clamp recordings, molecular biological techniques, and in silico analysis. RESULTS Sorbs2 is not only a cytoskeletal protein but also an RNA-binding protein that binds to BK channel proteins and BK-α mRNA, regulating BK channel expression and function in coronary smooth muscle cells. Molecular biological studies reveal that the SH3 domain of Sorbs2 is necessary for Sorbs2 interaction with BK-α subunits, while both the SH3 and SoHo domains of Sorbs2 interact with BK-β1 subunits. Deletion of the SH3 or SoHo domains abolishes the Sorbs2 effect on the BK-α/BK-β1 channel current density. Additionally, Sorbs2 is a target gene of the Nrf2 (nuclear factor erythroid-2-related factor 2), which binds to the promoter of Sorbs2 and regulates Sorbs2 expression in coronary smooth muscle cells. In vivo studies demonstrate that Sorbs2 knockout mice at 4 months of age display a significant decrease in BK channel expression and function, accompanied by impaired BK channel Ca2+-sensitivity and BK channel-mediated vasodilation in coronary arteries, without altering their body weights and blood glucose levels. Importantly, Sorbs2 expression is significantly downregulated in the coronary arteries of db/db type 2 diabetic mice. CONCLUSIONS Sorbs2, a downstream target of Nrf2, plays an important role in regulating BK channel expression and function in vascular smooth muscle cells. Vascular Sorbs2 is downregulated in diabetes. Genetic knockout of Sorbs2 manifests coronary BK channelopathy and vasculopathy observed in diabetic mice, independent of obesity and glucotoxicity.
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Affiliation(s)
- Xiaojing Sun
- The Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN
| | - Hon-Chi Lee
- The Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN
| | - Tong Lu
- The Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN
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Wang M, Zhang L, Piao H, Jin Y, Cui C, Jin X, Cui L, Yan C. Synbiotic of Pediococcus acidilactici and Inulin Ameliorates Dextran Sulfate Sodium-Induced Acute Ulcerative Colitis in Mice. J Microbiol Biotechnol 2024; 34:689-699. [PMID: 38346819 PMCID: PMC11016757 DOI: 10.4014/jmb.2308.08056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 11/24/2023] [Accepted: 12/13/2023] [Indexed: 04/17/2024]
Abstract
Colitis is a major gastrointestinal disease that threatens human health. In this study, a synbiotic composed of inulin and Pediococcus acidilactici (P. acidilactici) was investigated for its ability to alleviate dextran sulfate sodium (DSS)-induced colitis. The results revealed that the synbiotic, composed of inulin and P. acidilactici, attenuated the body weight loss and disease activity index (DAI) score in mice with DSS-mediated colitis. Determination of biochemical indicators found that the synbiotic increased anti-oxidation and alleviated inflammation in mice. Additionally, histopathological examination revealed that colonic goblet cell loss and severe mucosal damage in the model group were significantly reversed by the combination of inulin and P. acidilactici. Moreover, synbiotic treatment significantly reduced the levels of IL-1β, TNF-α, and IL-6 in the serum of mice. Thus, a synbiotic composed of inulin and P. acidilactici has preventive and therapeutic effects on DSSinduced colitis in mice.
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Affiliation(s)
- Mingzhu Wang
- Department of Animal Science, Yanbian University, Yanji, Jilin 133002, P.R. China
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, Jilin 133002, P.R. China
| | - Longzhou Zhang
- Department of Animal Science, Yanbian University, Yanji, Jilin 133002, P.R. China
| | - Huiyan Piao
- Department of Chemistry, National Demonstration Centre for Experimental Chemistry Education, Yanbian University, Yanji, Jilin 133002, P.R. China
| | - Yuanming Jin
- Department of Animal Science, Yanbian University, Yanji, Jilin 133002, P.R. China
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, Jilin 133002, P.R. China
| | - Chengdu Cui
- Department of Animal Medicine, Yanbian University, Yanji, Jilin 133002, P.R. China
| | - Xin Jin
- Laboratory Animal Center?Yanbian University, Yanji, Jilin 133002, P.R. China
| | - Lianhua Cui
- Department of Animal Science, Yanbian University, Yanji, Jilin 133002, P.R. China
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, Jilin 133002, P.R. China
| | - Chunri Yan
- Department of Preventive Medicine, Medical College, Yanbian University, Yanji, Jilin 133002, P.R. China
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Marfil MJ, Blanco FC, Colombatti Olivieri MA, Eirin ME, Zumárraga MJ. Transmissibility of Mycobacterium pinnipedii in a murine model. Front Cell Infect Microbiol 2024; 14:1328981. [PMID: 38606297 PMCID: PMC11007016 DOI: 10.3389/fcimb.2024.1328981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 03/04/2024] [Indexed: 04/13/2024] Open
Abstract
The causative agent of tuberculosis in pinnipeds is Mycobacterium pinnipedii, a member of the Mycobacterium tuberculosis complex (MTC). The natural hosts are pinnipeds; however, other non-marine mammals, including humans, can also be infected. The transmissibility of a pathogen is related to its virulence. The transmissibility of a M. pinnipedii strain (i.e., 1856) was investigated in a murine model and compared with that of two Mycobacterium bovis strains (i.e., 534 and 04-303) with different reported virulence. Non-inoculated mice (sentinels) were co-housed with intratracheally inoculated mice. Detailed inspection of mice to search for visible tuberculosis lesions in the lungs and spleen was performed, and bacillus viability at 30, 60, and 90 days post-inoculation (dpi) was assayed. A transmissibility of 100% was recorded at 30 dpi in sentinel mice co-housed with the inoculated mice from the M. pinnipedii and M. bovis 04-303 groups, as evidenced by the recovery of viable M. pinnipedii and M. bovis from the lungs of sentinel mice. Mice inoculated with M. pinnipedii (1856) and M. bovis (534) survived until euthanized, whereas five of the M. bovis 04-303-inoculated mice died at 17 dpi. This study constitutes the first report of the transmissibility of a M. pinnipedii strain in mice and confirms the utility of this experimental model to study virulence features such as the transmission of poorly characterized MTC species.
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Affiliation(s)
- María Jimena Marfil
- Cátedra de Enfermedades Infecciosas, Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Ciudad Autónoma d Buenos Aires, Argentina
| | - Federico Carlos Blanco
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO) UEDD CONICET-Instituto Nacional de Tecnología Agropecuaria, Argentina (INTA), Centro de Investigación en Cs. Veterinarias y Agronómicas (CICVyA)-CNIA, Hurlingham, Buenos Aires, Argentina
| | - María Alejandra Colombatti Olivieri
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO) UEDD CONICET-Instituto Nacional de Tecnología Agropecuaria, Argentina (INTA), Centro de Investigación en Cs. Veterinarias y Agronómicas (CICVyA)-CNIA, Hurlingham, Buenos Aires, Argentina
| | - María Emilia Eirin
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO) UEDD CONICET-Instituto Nacional de Tecnología Agropecuaria, Argentina (INTA), Centro de Investigación en Cs. Veterinarias y Agronómicas (CICVyA)-CNIA, Hurlingham, Buenos Aires, Argentina
| | - Martín José Zumárraga
- Instituto de Agrobiotecnología y Biología Molecular (IABIMO) UEDD CONICET-Instituto Nacional de Tecnología Agropecuaria, Argentina (INTA), Centro de Investigación en Cs. Veterinarias y Agronómicas (CICVyA)-CNIA, Hurlingham, Buenos Aires, Argentina
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Patel JC, Sherpa AD, Melani R, Witkovsky P, Wiseman MR, O'Neill B, Aoki C, Tritsch NX, Rice ME. GABA co-released from striatal dopamine axons dampens phasic dopamine release through autoregulatory GABA A receptors. Cell Rep 2024; 43:113834. [PMID: 38431842 DOI: 10.1016/j.celrep.2024.113834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 11/29/2023] [Accepted: 02/05/2024] [Indexed: 03/05/2024] Open
Abstract
Striatal dopamine axons co-release dopamine and gamma-aminobutyric acid (GABA), using GABA provided by uptake via GABA transporter-1 (GAT1). Functions of GABA co-release are poorly understood. We asked whether co-released GABA autoinhibits dopamine release via axonal GABA type A receptors (GABAARs), complementing established inhibition by dopamine acting at axonal D2 autoreceptors. We show that dopamine axons express α3-GABAAR subunits in mouse striatum. Enhanced dopamine release evoked by single-pulse optical stimulation in striatal slices with GABAAR antagonism confirms that an endogenous GABA tone limits dopamine release. Strikingly, an additional inhibitory component is seen when multiple pulses are used to mimic phasic axonal activity, revealing the role of GABAAR-mediated autoinhibition of dopamine release. This autoregulation is lost in conditional GAT1-knockout mice lacking GABA co-release. Given the faster kinetics of ionotropic GABAARs than G-protein-coupled D2 autoreceptors, our data reveal a mechanism whereby co-released GABA acts as a first responder to dampen phasic-to-tonic dopamine signaling.
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Affiliation(s)
- Jyoti C Patel
- Department of Neurosurgery, New York University Grossman School of Medicine, 550 First Avenue, New York, NY 10016, USA.
| | - Ang D Sherpa
- Department of Neurosurgery, New York University Grossman School of Medicine, 550 First Avenue, New York, NY 10016, USA; Center for Neural Science New York University, 4 Washington Place, New York, NY 10003, USA
| | - Riccardo Melani
- NYU Neuroscience Institute, New York University Grossman School of Medicine, 550 First Avenue, New York, NY 10016, USA
| | - Paul Witkovsky
- Department of Neurosurgery, New York University Grossman School of Medicine, 550 First Avenue, New York, NY 10016, USA
| | - Madeline R Wiseman
- Department of Neurosurgery, New York University Grossman School of Medicine, 550 First Avenue, New York, NY 10016, USA
| | - Brian O'Neill
- Department of Neurosurgery, New York University Grossman School of Medicine, 550 First Avenue, New York, NY 10016, USA
| | - Chiye Aoki
- NYU Neuroscience Institute, New York University Grossman School of Medicine, 550 First Avenue, New York, NY 10016, USA; Center for Neural Science New York University, 4 Washington Place, New York, NY 10003, USA
| | - Nicolas X Tritsch
- NYU Neuroscience Institute, New York University Grossman School of Medicine, 550 First Avenue, New York, NY 10016, USA
| | - Margaret E Rice
- Department of Neurosurgery, New York University Grossman School of Medicine, 550 First Avenue, New York, NY 10016, USA; NYU Neuroscience Institute, New York University Grossman School of Medicine, 550 First Avenue, New York, NY 10016, USA.
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Su Y, Huang J, Shi P, Li P, Huang P, Zeng J. Lotus Leaf Extract Alleviates Lipopolysaccharide-Induced Intestinal Injury in Mice by Regulating Oxidative Stress and Inflammation. J Med Food 2024. [PMID: 38526570 DOI: 10.1089/jmf.2023.k.0242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024] Open
Abstract
Inflammatory bowel disease, a disease featured by intestinal epithelial barrier destruction and dysfunction, has been a constant threat to animal health. The primary objective of this research was to assess the impact of the extract derived from lotus leaves (LLE) on lipopolysaccharide (LPS) induced damage to the intestines in mice, as well as to investigate the fundamental mechanism involved. The LLE was prepared using ultrasonic extraction in this experiment, and the LLE total flavonoid content was 117.02 ± 10.73 mg/g. The LLE had strong antioxidant activity in vitro, as assessed by 2, 2-diphenyl-1-picrylhydrazyl, ferric reducing antioxidant power, and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) methods. In the vivo experiment, different doses of LLE (50, 100, and 200 mg/kg) were administered for 2 weeks before LPS treatment in mice. The results revealed that LLE alleviates intestinal tissue damage in LPS-induced mice. In the jejunum tissue, LLE significantly upregulated mRNA and protein expression levels of tight junction proteins, such as ZO-1, occludin, and claudin-1, and decreased the contents of the inflammatory cytokines, interleukin (IL)-1β, IL-6, and tumor necrosis factor-α. Furthermore, the malondialdehyde and lactate dehydrogenase contents increased by LPS in the liver were significantly reduced after administration of LLE, and the total antioxidant capacity, superoxide dismutase, and reduced glutathione decreased by LPS were remarkably increased by LLE. It was found that LLE could relieve LPS-induced oxidative stress by upregulating mRNA and protein expression of Nrf2 and HO-1 in jejunum tissue. In conclusion, LLE alleviates LPS-induced intestinal damage through regulation of the Nrf2/HO-1 signal pathway to alleviate oxidative stress, reducing inflammatory factors and increasing the expression of tight junction proteins in mice.
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Affiliation(s)
- Yue Su
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China
- Hunan Key Laboratory of Traditional Chinese Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan, China
| | - Jialu Huang
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China
- Hunan Key Laboratory of Traditional Chinese Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan, China
| | - Panpan Shi
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| | - Pingping Li
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| | - Peng Huang
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| | - Jianguo Zeng
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China
- Hunan Key Laboratory of Traditional Chinese Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan, China
- College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan, China
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Zhang J, Zhang P, Li S, Yu T, Lai X, He Y. Study on the effect and mechanism of Lacticaseibacillus rhamnosus AFY06 on inflammation-associated colorectal cancer induced by AOM/DSS in mice. Front Microbiol 2024; 15:1382781. [PMID: 38572238 PMCID: PMC10987852 DOI: 10.3389/fmicb.2024.1382781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 03/05/2024] [Indexed: 04/05/2024] Open
Abstract
Introduction Lacticaseibacillus rhamnosus AFY06 (LR-AFY06) is a microorganism isolated from naturally fermented yogurt in Xinjiang, China. Methods In this study, we investigated the effects and mechanisms of LR-AFY06 in a mouse model of inflammation-associated colon cancer. The mouse model was established by azoxymethane/dextran sulfate sodium (AOM/DSS) induction. The tumor number in intestinal tissues was counted, and the histopathological analysis was performed on colon tissues. Enzyme-linked immunosorbent assay and real-time quantitative polymerase chain reaction were performed to measure relevant protein levels in colon tissues. Results LR-AFY06 treatment alleviated weight loss, increased organ index, reduced intestinal tumor incidence, improved histopathological damage, decreased the levels of inflammatory cytokines such as interleukin-6 (IL-6), interleukin-1 beta (IL-1β), tumor necrosis factor alpha (TNF-α), nuclear factor κB (NF-κB), and inducible nitric oxide synthase (iNOS) in the serum and colon tissue, downregulated the mRNA expression of inhibitor of NF-κB beta (IκBβ), p65, p50, p52, B-cell lymphoma-2 (Bcl-2), and B-cell lymphoma-extra large (Bcl-xL) in colon tissues, and increased the mRNA expression of Bid and caspase-8. The high concentration of LR-AFY06 exerted a better effect than the low concentration; however, the effect was slightly inferior to that of aspirin. Moreover, LR-AFY06 mitigated the intestinal inflammatory process and inhibited intestinal tumor development by regulating the NF-κB and apoptosis pathways. Discussion The present study indicates the regulatory potential of LR-AFY06 in inflammation-associated colorectal cancer in mice, providing a valuable basis for further research.
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Affiliation(s)
- Jing Zhang
- Environmental and Quality Inspection College, Chongqing Chemical Industry Vocational College, Chongqing, China
| | - Piyun Zhang
- Department of Gastroenterology and Hepatology, Chongqing Emergency Medical Center, Chongqing University Central Hospital, Chongqing, China
| | - Sijia Li
- Environmental and Quality Inspection College, Chongqing Chemical Industry Vocational College, Chongqing, China
| | - Ting Yu
- College of Traditional Chinese Medicine, Chongqing Medical University, Chongqing, China
| | - Xiangyu Lai
- Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital, Chongqing Cancer Institute, Chongqing Cancer Hospital, Chongqing, China
| | - Yongpeng He
- Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital, Chongqing Cancer Institute, Chongqing Cancer Hospital, Chongqing, China
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Iwamoto Y, Kimura T, Dan K, Iwamoto H, Sanada J, Fushimi Y, Katakura Y, Shimoda M, Nogami Y, Shirakiya Y, Nakanishi S, Mune T, Kaku K, Kaneto H. Dipeptidyl peptidase-4 inhibitor and sodium-glucose cotransporter 2 inhibitor additively ameliorate hepatic steatosis through different mechanisms of action in high-fat diet-fed mice. Diabetes Obes Metab 2024. [PMID: 38504118 DOI: 10.1111/dom.15548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 02/26/2024] [Accepted: 02/27/2024] [Indexed: 03/21/2024]
Abstract
AIM Dipeptidyl peptidase-4 (DPP-4) inhibitors suppress the inactivation of incretin hormones and lower blood glucose levels by inhibiting DPP-4 function. Sodium-glucose cotransporter 2 (SGLT2) inhibitors lower blood glucose levels in an insulin-independent manner by inhibiting renal reabsorption of glucose. DPP-4 and SGLT2 inhibitors each have the potential to improve hepatic steatosis; however, their combined effects remain unclear. In this study, we examined the effects of the combination of these drugs on hepatic steatosis using high-fat diet-fed mice. METHOD C57BL/6J male mice were fed a 60% high-fat diet for 2 months to induce hepatic steatosis. Mice were divided into four groups (control; DPP-4 inhibitor anagliptin; SGLT2 inhibitor luseogliflozin; anagliptin and luseogliflozin combination), and the effects of each drug and their combination on hepatic steatosis after a 4-week intervention were evaluated. RESULTS There were no differences in blood glucose levels among the four groups. Anagliptin suppresses inflammation- and chemokine-related gene expression. It also improved macrophage fractionation in the liver. Luseogliflozin reduced body weight, hepatic gluconeogenesis and blood glucose levels in the oral glucose tolerance test. The combination treatment improved hepatic steatosis without interfering with the effects of anagliptin and luseogliflozin, respectively, and fat content and inflammatory gene expression in the liver were significantly improved in the combination group compared with the other groups. CONCLUSION The combination therapy with the DPP-4 inhibitor anagliptin and the SGLT2 inhibitor luseogliflozin inhibits fat deposition in the liver via anti-inflammatory effects during the early phase of diet-induced liver steatosis.
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Affiliation(s)
- Yuichiro Iwamoto
- Department of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, Kurashiki, Japan
| | - Tomohiko Kimura
- Department of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, Kurashiki, Japan
| | - Kazunori Dan
- Department of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, Kurashiki, Japan
| | - Hideyuki Iwamoto
- Department of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, Kurashiki, Japan
| | - Junpei Sanada
- Department of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, Kurashiki, Japan
| | - Yoshiro Fushimi
- Department of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, Kurashiki, Japan
| | - Yukino Katakura
- Department of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, Kurashiki, Japan
| | - Masashi Shimoda
- Department of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, Kurashiki, Japan
| | - Yuka Nogami
- Department of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, Kurashiki, Japan
| | - Yoshiko Shirakiya
- Department of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, Kurashiki, Japan
| | - Shuhei Nakanishi
- Department of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, Kurashiki, Japan
| | - Tomoatsu Mune
- Department of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, Kurashiki, Japan
| | - Kohei Kaku
- Department of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, Kurashiki, Japan
| | - Hideaki Kaneto
- Department of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, Kurashiki, Japan
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Zemtsovski JD, Tumpara S, Schmidt S, Vijayan V, Klos A, Laudeley R, Held J, Immenschuh S, Wurm FM, Welte T, Haller H, Janciauskiene S, Shushakova N. Alpha1-antitrypsin improves survival in murine abdominal sepsis model by decreasing inflammation and sequestration of free heme. Front Immunol 2024; 15:1368040. [PMID: 38562925 PMCID: PMC10982482 DOI: 10.3389/fimmu.2024.1368040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 02/27/2024] [Indexed: 04/04/2024] Open
Abstract
Background Excessive inflammation, hemolysis, and accumulation of labile heme play an essential role in the pathophysiology of multi-organ dysfunction syndrome (MODS) in sepsis. Alpha1-antitrypsin (AAT), an acute phase protein with heme binding capacity, is one of the essential modulators of host responses to inflammation. In this study, we evaluate the putative protective effect of AAT against MODS and mortality in a mouse model of polymicrobial abdominal sepsis. Methods Polymicrobial abdominal sepsis was induced in C57BL/6N mice by cecal ligation and puncture (CLP). Immediately after CLP surgery, mice were treated intraperitoneally with three different forms of human AAT-plasma-derived native (nAAT), oxidized nAAT (oxAAT), or recombinant AAT (recAAT)-or were injected with vehicle. Sham-operated mice served as controls. Mouse survival, bacterial load, kidney and liver function, immune cell profiles, cytokines/chemokines, and free (labile) heme levels were assessed. In parallel, in vitro experiments were carried out with resident peritoneal macrophages (MPMΦ) and mouse peritoneal mesothelial cells (MPMC). Results All AAT preparations used reduced mortality in septic mice. Treatment with AAT significantly reduced plasma lactate dehydrogenase and s-creatinine levels, vascular leakage, and systemic inflammation. Specifically, AAT reduced intraperitoneal accumulation of free heme, production of cytokines/chemokines, and neutrophil infiltration into the peritoneal cavity compared to septic mice not treated with AAT. In vitro experiments performed using MPMC and primary MPMΦ confirmed that AAT not only significantly decreases lipopolysaccharide (LPS)-induced pro-inflammatory cell activation but also prevents the enhancement of cellular responses to LPS by free heme. In addition, AAT inhibits cell death caused by free heme in vitro. Conclusion Data from the septic CLP mouse model suggest that intraperitoneal AAT treatment alone is sufficient to improve sepsis-associated organ dysfunctions, preserve endothelial barrier function, and reduce mortality, likely by preventing hyper-inflammatory responses and by neutralizing free heme.
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Affiliation(s)
- Jan D. Zemtsovski
- Department of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany
| | - Srinu Tumpara
- Department of Respiratory Medicine, Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover Medical School, Hannover, Germany
| | | | - Vijith Vijayan
- Institute for Transfusion Medicine and Transplant Engineering, Hannover Medical School, Hannover, Germany
| | - Andreas Klos
- Institute of Medical Microbiology and Hospital Epidemiology, Hannover Medical School, Hannover, Germany
| | - Robert Laudeley
- Institute of Medical Microbiology and Hospital Epidemiology, Hannover Medical School, Hannover, Germany
| | - Julia Held
- Department of Respiratory Medicine, Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover Medical School, Hannover, Germany
| | - Stephan Immenschuh
- Institute for Transfusion Medicine and Transplant Engineering, Hannover Medical School, Hannover, Germany
| | - Florian M. Wurm
- Faculty of Life Sciences, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Tobias Welte
- Department of Respiratory Medicine, Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover Medical School, Hannover, Germany
| | - Hermann Haller
- Department of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany
| | - Sabina Janciauskiene
- Department of Respiratory Medicine, Member of the German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover Medical School, Hannover, Germany
| | - Nelli Shushakova
- Department of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany
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50
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Afaloniati H, Aindelis G, Spyridopoulou K, Lagou MK, Tsingotjidou A, Chlichlia K, Erdman SE, Poutahidis T, Angelopoulou K. Peri-weaning cholera toxin consumption suppresses chemically-induced carcinogenesis in mice. Int J Cancer 2024; 154:1097-1110. [PMID: 38095490 DOI: 10.1002/ijc.34816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 10/27/2023] [Accepted: 11/17/2023] [Indexed: 01/23/2024]
Abstract
Gastrointestinal bacteria are known to have an impact on local and systemic immunity, and consequently either promote or suppress cancer development. Following the notion that perinatal bacterial exposure might confer immune system competency for life, we investigated whether early-life administration of cholera-toxin (CT), a protein exotoxin of the small intestine pathogenic bacterium Vibrio cholerae, may shape local and systemic immunity to impart a protective effect against tumor development in epithelia distantly located from the gut. For that, newborn mice were orally treated with low non-pathogenic doses of CT and later challenged with the carcinogen 7,12-dimethylbenzanthracene (DMBA), known to cause mainly mammary, but also skin, lung and stomach cancer. Our results revealed that CT suppressed the overall incidence and multiplicity of tumors, with varying efficiencies among cancer types, and promoted survival. Harvesting mouse tissues at an earlier time-point (105 instead of 294 days), showed that CT does not prevent preneoplastic lesions per se but it rather hinders their evolution into tumors. CT pretreatment universally increased apoptosis in the cancer-prone mammary, lung and nonglandular stomach, and altered the expression of several cancer-related molecules. Moreover, CT had a long-term effect on immune system cells and factors, the most prominent being the systemic neutrophil decrease. Finally, CT treatment significantly affected gut bacterial flora composition, leading among others to a major shift from Clostridia to Bacilli class abundance. Overall, these results support the notion that early-life CT consumption is able to affect host's immune, microbiome and gene expression profiles toward the prevention of cancer.
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Affiliation(s)
- Hara Afaloniati
- Laboratory of Biochemistry and Toxicology, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Georgios Aindelis
- Department of Molecular Biology and Genetics, Democritus University of Thrace, University Campus Dragana, Alexandroupolis, Greece
| | - Katerina Spyridopoulou
- Department of Molecular Biology and Genetics, Democritus University of Thrace, University Campus Dragana, Alexandroupolis, Greece
| | - Maria K Lagou
- Laboratory of Pathology, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Anastasia Tsingotjidou
- Laboratory of Anatomy, Histology and Embryology, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Katerina Chlichlia
- Department of Molecular Biology and Genetics, Democritus University of Thrace, University Campus Dragana, Alexandroupolis, Greece
| | - Suzan E Erdman
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Theofilos Poutahidis
- Laboratory of Pathology, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Katerina Angelopoulou
- Laboratory of Biochemistry and Toxicology, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
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