1
|
Avraham Y, Shapira-Furman T, Saklani R, Van Heukelom B, Carmel M, Vorobiev L, Lipsker L, Zwas DR, Berry EM, Domb AJ. Sustained insulin treatment restoring metabolic status, body weight, and cognition in an anorexia nervosa-like animal model in mice. Behav Brain Res 2024; 466:115001. [PMID: 38642861 DOI: 10.1016/j.bbr.2024.115001] [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: 11/02/2023] [Revised: 04/12/2024] [Accepted: 04/13/2024] [Indexed: 04/22/2024]
Abstract
INTRODUCTION Anorexia Nervosa (AN) is a psycho-socio-biological disease characterized by severe weight loss as result of dieting and hyperactivity. Effective treatments are scarce, despite its significant prevalence and mortality. AN patients show lower basal insulin levels and increased metabolic clearance, leading to weight loss, cognitive deficits, and hormonal imbalances. Low-dose polymer insulin could potentially reverse these effects by restoring brain function, reducing fear of weight gain, encouraging food intake, and restoring fat depots. This study evaluates an insulin delivery system designed for sustained release and AN treatment. METHODS AN-like model was established through dietary restriction (DR). On days 1-25, mice were on DR, and on days 26-31 they were on ad libitum regimen. An insulin-loaded delivery system was administered subcutaneously (1% w/w insulin). The impact of insulin treatment on gene expression in the hippocampus (cognition, regulation of stress, neurogenesis) and hypothalamus (eating behavior, mood) was assessed. Behavioral assays were conducted to evaluate motor activity and cognitive function. RESULTS The delivery system demonstrated sustained insulin release, maintaining therapeutic plasma levels. Diet restriction mice treated with the insulin delivery system showed body weight restoration. Gene expression analysis revealed enhanced expression of CB1 and CB2 genes associated with improved eating behavior and cognition, while POMC expression was reduced. Insulin-polymer treatment restored cognitive function and decreased hyperactivity in the AN-like model. CONCLUSION The PSA-RA-based insulin delivery system effectively restores metabolic balance, body weight, and cognitive function in the AN model. Its ability to steadily release insulin makes it a promising candidate for AN treatment."
Collapse
Affiliation(s)
- Yosefa Avraham
- Department of Metabolism and Human Nutrition, Braun School of Public Health, Hadassah-Hebrew University Medical School, Jerusalem 91120, Israel.
| | - Tovi Shapira-Furman
- Institute of Drug Research, School of Pharmacy Hadassah-Hebrew University Medical School, Jerusalem 91120, Israel
| | - Ravi Saklani
- Institute of Drug Research, School of Pharmacy Hadassah-Hebrew University Medical School, Jerusalem 91120, Israel
| | - Bob Van Heukelom
- Department of Neurology, Gelderse Vallei Hospital, 6716 RP, the Netherlands
| | - Moshe Carmel
- Department of Metabolism and Human Nutrition, Braun School of Public Health, Hadassah-Hebrew University Medical School, Jerusalem 91120, Israel
| | - Lia Vorobiev
- Department of Metabolism and Human Nutrition, Braun School of Public Health, Hadassah-Hebrew University Medical School, Jerusalem 91120, Israel
| | - Leah Lipsker
- Department of Metabolism and Human Nutrition, Braun School of Public Health, Hadassah-Hebrew University Medical School, Jerusalem 91120, Israel
| | - Donna R Zwas
- Linda Joy Pollin Cardiovascular Wellness Center for Women, Heart Institute, Hadassah University Medical Center, Jerusalem, Israel
| | - Elliot M Berry
- Department of Metabolism and Human Nutrition, Braun School of Public Health, Hadassah-Hebrew University Medical School, Jerusalem 91120, Israel
| | - Abraham J Domb
- Institute of Drug Research, School of Pharmacy Hadassah-Hebrew University Medical School, Jerusalem 91120, Israel
| |
Collapse
|
2
|
Guerra RO, do Carmo Neto JR, da Silva PEF, Franco PIR, Barbosa RM, de Albuquerque Martins T, Costa-Madeira J, de Assunção TSF, de Oliveira CJF, Machado JR, Silva Teixeira LDA, Rodrigues WF, Júnior VR, Silva ACA, da Silva MV. Metallic nanoparticles and treatment of cutaneous leishmaniasis: A systematic review. J Trace Elem Med Biol 2024; 83:127404. [PMID: 38364464 DOI: 10.1016/j.jtemb.2024.127404] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 01/22/2024] [Accepted: 01/29/2024] [Indexed: 02/18/2024]
Abstract
BACKGROUND Cutaneous leishmaniasis (LC) is an infectious vector-borne disease caused by parasites belonging to the genus Leishmania. Metallic nanoparticles (MNPs) have been investigated as alternatives for the treatment of LC owing to their small size and high surface area. Here, we aimed to evaluate the effect of MNPs in the treatment of LC through experimental, in vitro and in vivo investigations. METHODS The databases used were MEDLINE/ PubMed, Scopus, Web of Science, Embase, and Science Direct. Manual searches of the reference lists of the included studies and grey literature were also performed. English language and experimental in vitro and in vivo studies using different Leishmania species, both related to MNP treatment, were included. This study was registered in PROSPERO (CRD42021248245). RESULTS A total of 93 articles were included. Silver nanoparticles are the most studied MNPs, and L. tropica is the most studied species. Among the mechanisms of action of MNPs in vitro, we highlight the production of reactive oxygen species, direct contact of MNPs with the biomolecules of the parasite, and release of metal ions. CONCLUSION MNPs may be considered a promising alternative for the treatment of LC, but further studies are needed to define their efficacy and safety.
Collapse
Affiliation(s)
- Rhanoica Oliveira Guerra
- Department of Biochemistry and Immunology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirão Preto, SP, Brazil
| | - José Rodrigues do Carmo Neto
- Department of Bioscience and Technology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiania, Goiás, Brazil.
| | - Priscilla Elias Ferreira da Silva
- Post Graduation Course of Tropical Medicine and Infectology, Institute of Healthy Science´s, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - Pablo Igor Ribeiro Franco
- Department of Bioscience and Technology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiania, Goiás, Brazil
| | - Rafaela Miranda Barbosa
- Department of Basic and Applied Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Tarcísio de Albuquerque Martins
- Post-Graduation Course of Healthy Science, Institute of Healthy Science, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - Juliana Costa-Madeira
- Department of Biochemistry and Immunology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirão Preto, SP, Brazil
| | - Thais Soares Farnesi de Assunção
- Post Graduation Course of Tropical Medicine and Infectology, Institute of Healthy Science´s, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | | | - Juliana Reis Machado
- Department of General Pathology, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - Luciana de Almeida Silva Teixeira
- Department of Internal Medicine, Institute of Healthy Science, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - Wellington Francisco Rodrigues
- Post-Graduation Course of Healthy Science, Institute of Healthy Science, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - Virmondes Rodrigues Júnior
- Department of Microbiology, Immunology and Parasitology, Institute of Biological and Natural Sciences, Brazil
| | - Anielle Christine Almeida Silva
- Laboratory of New Nanostructured and Functional Materials, Physics Institute, Federal University of Alagoas, Maceió, Alagoas, Brazil
| | - Marcos Vinicius da Silva
- Department of Microbiology, Immunology and Parasitology, Institute of Biological and Natural Sciences, Brazil.
| |
Collapse
|
3
|
Flandreau E, Risbrough V. Reframing and refining model system validity for anxiety and depression research: A commentary on Gencturk & Unal (2024). Cogn Affect Behav Neurosci 2024; 24:225-227. [PMID: 38453806 DOI: 10.3758/s13415-024-01178-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/27/2024] [Indexed: 03/09/2024]
Affiliation(s)
- E Flandreau
- Psychology and Neuroscience, Grand Valley State University, Allendale, MI, 49401, USA
| | - V Risbrough
- Veterans Affairs Center of Excellence for Stress and Mental Health, San Diego, CA, 92161, USA.
- Department of Psychiatry, University of California San Diego, La Jolla, CA, 92093, USA.
| |
Collapse
|
4
|
Singh VK, Kethiri AR, Pingali T, Sahoo A, Salman M, Koduri MA, Prasad D, Bokara KK, Basu S, Singh V. Development and validation of a reliable rabbit model of limbal stem cell deficiency by mechanical debridement using an ophthalmic burr. Exp Eye Res 2023; 236:109667. [PMID: 37758156 DOI: 10.1016/j.exer.2023.109667] [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: 07/01/2023] [Revised: 09/06/2023] [Accepted: 09/24/2023] [Indexed: 10/03/2023]
Abstract
A simple and reproducible method is necessary to generate reliable animal models of limbal stem cell deficiency (LSCD) for assessing the safety and efficacy of new therapeutic modalities. This study aimed to develop and validate a rabbit model of LSCD through mechanical injury. The corneal and limbal epithelium of New Zealand White rabbits (n = 18) were mechanically debrided using an ophthalmic burr (Algerbrush II) with a 1.0-mm rotating head after 360° conjunctival peritomy. The debrided eyes were serially evaluated for changes in corneal opacity, neo-vascularization, epithelial defect and corneal thickness using clinical photography, slit lamp imaging, fluorescein staining, and anterior segment optical coherence tomography scanning (AS-OCT). Following this, an assessment of histopathology and phenotypic marker expression of the excised corneas was conducted. The experimental eyes were grouped as mild (n = 4), moderate (n = 10), and severe (n = 4) based on the grade of LSCD. The moderate group exhibited abnormal epithelium, cellular infiltration in the stroma, and vascularization in the central, peripheral, and limbal regions of the cornea. The severe group demonstrated central epithelial edema, peripheral epithelial thinning with sparse goblet cell population, extensive cellular infiltration in the stroma, and dense vascularization in the limbal region of the cornea. A significant decrease in the expression of K12 and p63 (p < 0.0001) was observed, indicating the loss of corneal epithelium and limbal epithelial stem cells in the LSCD cornea. This study demonstrates that the Alger brush-induced mechanical debridement model provides a reliable model of LSCD with comprehensive clinic-pathological features and that is well suited for evaluating novel therapeutic and regenerative approaches.
Collapse
Affiliation(s)
- Vijay Kumar Singh
- Prof. Brien Holden Eye Research Centre, L V Prasad Eye Institute, Hyderabad, Telangana, India; Centre for Ocular Regeneration (CORE), L V Prasad Eye Institute, Hyderabad, Telangana, India
| | | | - Tejaswini Pingali
- Prof. Brien Holden Eye Research Centre, L V Prasad Eye Institute, Hyderabad, Telangana, India; Centre for Ocular Regeneration (CORE), L V Prasad Eye Institute, Hyderabad, Telangana, India
| | - Abhishek Sahoo
- Prof. Brien Holden Eye Research Centre, L V Prasad Eye Institute, Hyderabad, Telangana, India; Centre for Ocular Regeneration (CORE), L V Prasad Eye Institute, Hyderabad, Telangana, India
| | - Mohd Salman
- Prof. Brien Holden Eye Research Centre, L V Prasad Eye Institute, Hyderabad, Telangana, India; Centre for Ocular Regeneration (CORE), L V Prasad Eye Institute, Hyderabad, Telangana, India
| | - Madhuri Amulya Koduri
- Prof. Brien Holden Eye Research Centre, L V Prasad Eye Institute, Hyderabad, Telangana, India; Centre for Ocular Regeneration (CORE), L V Prasad Eye Institute, Hyderabad, Telangana, India
| | - Deeksha Prasad
- Prof. Brien Holden Eye Research Centre, L V Prasad Eye Institute, Hyderabad, Telangana, India; Centre for Ocular Regeneration (CORE), L V Prasad Eye Institute, Hyderabad, Telangana, India
| | | | - Sayan Basu
- Prof. Brien Holden Eye Research Centre, L V Prasad Eye Institute, Hyderabad, Telangana, India; Centre for Ocular Regeneration (CORE), L V Prasad Eye Institute, Hyderabad, Telangana, India; Shantilal Shanghvi Cornea Institute, L V Prasad Eye Institute, Hyderabad, Telangana, India.
| | - Vivek Singh
- Prof. Brien Holden Eye Research Centre, L V Prasad Eye Institute, Hyderabad, Telangana, India; Centre for Ocular Regeneration (CORE), L V Prasad Eye Institute, Hyderabad, Telangana, India.
| |
Collapse
|
5
|
Romero CC, Sarria IPF, Ricciardi G, Salazar JLC. Senning Procedure: Conceptualization in the Wet Lab. Braz J Cardiovasc Surg 2023; 38:e20230025. [PMID: 37801673 PMCID: PMC10552774 DOI: 10.21470/1678-9741-2023-0025] [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: 01/21/2023] [Accepted: 03/16/2023] [Indexed: 10/08/2023] Open
Abstract
Training congenital heart surgeons today is challenging for themselves and their mentors. The situation becomes even more complicated while teaching complex surgical procedures. Senning operation is one of the most ingenious intracardiac techniques. We consider this surgical technique a worthy example to stand out the potential advantage of wet lab training. This article demonstrates the simulation of the Senning procedure in an explanted porcine model.
Collapse
Affiliation(s)
- César Castillo Romero
- Department of Congenital Heart Surgery, National Institute of
Cardiology Ignacio Chávez, Mexico City, Mexico
| | - Iris Pamela Flores Sarria
- Department of Congenital Heart Surgery, National Institute of
Cardiology Ignacio Chávez, Mexico City, Mexico
| | - Gabriella Ricciardi
- Department of Cardiac Surgery, University of Lille, Lille
University Hospital, Lille, France
| | | |
Collapse
|
6
|
Tran TPN, Nguyen TT, Tran GB. Anti-Arthritis Effect of Ethanol Extract of Sacha Inchi ( Plukenetia volubilis L.) Leaves Against Complete Freund's Adjuvant-Induced Arthritis Model in Mice. Trop Life Sci Res 2023; 34:237-257. [PMID: 37860100 PMCID: PMC10583854 DOI: 10.21315/tlsr2023.34.3.13] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 04/10/2023] [Indexed: 10/21/2023] Open
Abstract
Sacha inchi (Plukenetia volubilis L.) is a well-known oleaginous plant used as food source and traditional medicine by indigenous people for a long time. This study was conducted to evaluate anti-arthritis effect of ethanol extract of Sacha inchi leaves and provide scientific evidence to develop the new anti-arthritis remedy from Sacha inchi. Rheumatoid arthritis model was established by injection of complete Freund's adjuvant into right hind footpads of mice and three doses of ethanol extract of Sacha inchi leaves (100, 200 and 300 mg/kg body weight) were used for treatment. The severity of arthritis was evaluated by measuring the ankle diameter and arthritic score, hematological and biochemical parameters (erythrocytes, leukocytes, lymphocytes, monocytes, granulocytes counts, erythrocyte sedimentation rate, C-reactive protein and rheumatoid factor). The pro-and anti-inflammatory cytokines (TNF-α, INF-γ, IL-1β, IL-6, and IL-10) and the histology change of joint were also examined. All three doses of extracts significantly alleviated ankle diameter and arthritic score. Furthermore, the extracts could ameliorate the alternation of inflammatory cytokines as well histological features of CFA-induced mice. The efficacy of extract dose of 300 mg/kg body weight is comparable with reference drug (Mobic, 0.2 mg/kg body weight). This study indicates Sacha inchi leaf extract as the promising remedy for treatment of arthritis.
Collapse
Affiliation(s)
- Thi Phuong Nhung Tran
- Department of Biotechnology, Institute of Biotechnology and Food Technology, Industrial University of Ho Chi Minh City, 12 Nguyen Van Bao Street, Go Vap District, Ho Chi Minh City, Vietnam
| | - Thi-Trang Nguyen
- Department of Food Science and Nutrition, Institute of Biotechnology and Food Technology, Industrial University of Ho Chi Minh City, 12 Nguyen Van Bao Street, Go Vap District, Ho Chi Minh City, Vietnam
| | - Gia-Buu Tran
- Faculty of Pharmacy, Ton Duc Thang University, 19, Nguyễn Hữu Thọ, Tân Hưng, Quận 7, Thành phố, Ho Chi Minh City, Vietnam
| |
Collapse
|
7
|
Tayebi B, Molazem M, Babaahmadi M, Ebrahimi E, Hajinasrollah M, Mostafaei F, Makvand Gholipour N, Baharvand H, Baghaban Eslaminejad MR, Hassani SN, Hajizadeh-Saffar E. Comparison of Ultrasound-Guided Percutaneous and Open Surgery Approaches in The Animal Model of Tumor Necrosis Factor-Alpha-Induced Disc Degeneration. Cell J 2023; 25:338-346. [PMID: 37300295 DOI: 10.22074/cellj.2023.1972610.1168] [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] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Indexed: 06/12/2023]
Abstract
OBJECTIVE Animal models provide a deeper understanding about various complications and better demonstrate the effect of therapeutic approaches. One of the issues in the low back pain (LBP) model is the invasiveness of the procedure and it does not mimic actual disease conditions in humans. The purpose of the present study was to compare the ultrasound-guided (US-guided) percutaneous approach with the open-surgery method in the tumor necrosis factor-alpha (TNF-α)-induced disc degeneration model for the first time to showcase the advantages of this recently developed, minimally invasive method. MATERIALS AND METHODS In this experimental study, eight male rabbits were divided into two groups (open-surgery and US-guided). Relevant discs were punctured by two approaches and TNF-α was injected into them. Magnetic resonance imaging (MRI) was performed to assess the disc height index (DHI) at all stages. Also morphological changes (annulus fibrosus, nucleus pulposus) were evaluated by assessing Pfirrmann grade and histological evaluation (Hematoxylin and Eosin). RESULTS The findings indicated targeted discs became degenerated after six weeks. DHI in both groups was significantly reduced (P<0.0001), however the difference was not significant between the two groups. In the open-surgery group, osteophyte formation was seen at six and eighteen weeks after the puncture. Pfirrmann grading revealed significant differences between injured and adjacent uninjured discs (P<0.0001). The US-guided method indicated significantly fewer signs of degeneration after six (P=0.0110) and eighteen (P=0.0328) weeks. Histological scoring showed significantly lower degeneration in the US-guided group (P=0.0039). CONCLUSION The US-guided method developed a milder grade condition and such a model better mimics the chronic characteristics of LBP and the procedure is more ethically accepted. Therefore, the US-guided method could be a merit approach for future research in this domain as a safe, practical and low-cost method.
Collapse
Affiliation(s)
- Behnoosh Tayebi
- Department of Applied Cell Sciences, Faculty of Basic Sciences and Advanced Medical Technologies, Royan Institute, ACECR, Tehran, Iran
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Mohamamd Molazem
- Department of Radiology and Surgery, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Mahnaz Babaahmadi
- Department of Applied Cell Sciences, Faculty of Basic Sciences and Advanced Medical Technologies, Royan Institute, ACECR, Tehran, Iran
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Erfan Ebrahimi
- Department of Radiology and Surgery, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Mostafa Hajinasrollah
- Animal Core Facility, Reproductive Biomedicine Research Center, Royan Institute for Animal Biotechnology, ACECR, Tehran, Iran
| | - Farhad Mostafaei
- Animal Core Facility, Reproductive Biomedicine Research Center, Royan Institute for Animal Biotechnology, ACECR, Tehran, Iran
| | - Nima Makvand Gholipour
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Hossein Baharvand
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
- Department of Developmental Biology, School of Basic Sciences and Advanced Technologies in Biology, University of Science and Culture, Tehran, Iran
| | - Mohamad Reza Baghaban Eslaminejad
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran.
| | - Seyedeh-Nafiseh Hassani
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
- Advanced Therapy Medicinal Product Technology Development Center (ATMP-TDC), Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran.
| | - Ensiyeh Hajizadeh-Saffar
- Department of Applied Cell Sciences, Faculty of Basic Sciences and Advanced Medical Technologies, Royan Institute, ACECR, Tehran, Iran
- Advanced Therapy Medicinal Product Technology Development Center (ATMP-TDC), Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran.
- Department of Regenerative Medicine, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| |
Collapse
|
8
|
Pan F, Do TD, Schmitt N, Vollherbst DF, Möhlenbruch M, Tinoush P, Brobeil A, Koch V, Richter GM, Pereira PL, Kauczor HU, Sommer CM. Standardizing lymphangiography and lymphatic interventions: a preclinical in vivo approach with detailed procedural steps. CVIR Endovasc 2023; 6:21. [PMID: 36995443 PMCID: PMC10063775 DOI: 10.1186/s42155-023-00364-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 03/13/2023] [Indexed: 03/31/2023] Open
Abstract
PURPOSE To present a preclinical in vivo approach for standardization and training of lymphangiography and lymphatic interventions using a pictorial review. MATERIALS AND METHODS Different lipiodol- and gadolinium-based lymphangiography and lymphatic interventions were performed in twelve (12) landrace pigs with a mean bodyweight of 34 ± 2 kg using various imaging and guiding modalities, similar to the procedures used in humans. The techniques used were explicitly introduced and illustrated. The potential applications of each technique in preclinical training were also discussed. RESULTS By applying visual, ultrasonography, fluoroscopy, CT, cone-beam CT, and/or MRI examination or guidance, a total of eleven techniques were successfully implemented in twelve pigs. The presented techniques include inguinal postoperative lymphatic leakage (PLL) establishment, interstitial dye test, five types of lymphangiography [incl. lipiodol-based translymphatic lymphangiography (TL), lipiodol-based percutaneous intranodal lymphangiography (INL), lipiodol-based laparotomic INL, lipiodol-based interstitial lymphangiography, and interstitial magnetic resonance lymphangiography (MRL)], and four types of percutaneous interventions in the treatment of PLL [incl. thoracic duct embolization (TDE), intranodal embolization (INE), afferent lymphatic vessel sclerotherapy (ALVS), and afferent lymphatic vessel embolization (ALVE)]. CONCLUSION This study provides a valuable resource for inexperienced interventional radiologists to undergo the preclinical training in lymphangiography and lymphatic interventions using healthy pig models.
Collapse
Affiliation(s)
- Feng Pan
- Clinic of Diagnostic and Interventional Radiology, Heidelberg University Hospital, Heidelberg, Germany
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Thuy D Do
- Clinic of Diagnostic and Interventional Radiology, Heidelberg University Hospital, Heidelberg, Germany
| | - Niclas Schmitt
- Department of Neuroradiology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
| | - Dominik F Vollherbst
- Department of Neuroradiology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
| | - Markus Möhlenbruch
- Department of Neuroradiology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
| | - Parham Tinoush
- Clinic of Diagnostic and Interventional Radiology, Heidelberg University Hospital, Heidelberg, Germany
| | - Alexander Brobeil
- General Pathology and Pathological Anatomy, Heidelberg University Hospital, Im Neuenheimer Feld 224, 69120, Heidelberg, Germany
- Pathological Institute, NCT Tissue Bank, Heidelberg University Hospital, Im Neuenheimer Feld 224, 69120, Heidelberg, Germany
| | - Vitali Koch
- Institute for Diagnostic and Interventional Radiology, Frankfurt University Hospital, Theodor-Stern-Kai 7, 60590, Frankfurt Am Main, Germany
| | - Götz M Richter
- Clinic of Diagnostic and Interventional Radiology, Klinikum Stuttgart, Stuttgart, Germany
| | - Philippe L Pereira
- Clinic for Radiology, Minimally-Invasive Therapies and Nuclearmedicine, SLK-Kliniken GmbH, Heilbronn, Germany
| | - Hans U Kauczor
- Clinic of Diagnostic and Interventional Radiology, Heidelberg University Hospital, Heidelberg, Germany
| | - Christof M Sommer
- Clinic of Diagnostic and Interventional Radiology, Heidelberg University Hospital, Heidelberg, Germany.
- Clinic of Neuroradiology, Stuttgart Clinics, Katharinenhospital, Kriegsbergstrasse 60, 70174, Stuttgart, Germany.
| |
Collapse
|
9
|
Meng SJ, Fan MQ, Qian JS, Zhang JW, Xu HH, Zheng Y, Zhao WQ, Shan LT, Huang JF. An Innovative Model of ISS-Based Multiple Fractures and Gastrointestinal Dysfunction Related to c-Kit Protein Expression on Interstitial Cells of Cajal. Orthop Surg 2023; 15:1325-1332. [PMID: 36919913 PMCID: PMC10157708 DOI: 10.1111/os.13599] [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: 03/23/2022] [Revised: 08/01/2022] [Accepted: 10/24/2022] [Indexed: 03/16/2023] Open
Abstract
OBJECTIVE Gastrointestinal dysfunction seriously affects the prognosis and quality of life of patients with multiple fractures. However, experimental evidence of this relationship is lacking. Here we describe a newly developed mouse model of postoperative gastrointestinal dysfunction after multiple fractures. METHODS Trauma severity was assessed using the injury severity score (ISS). Based on the ISS, a multiple fracture model was established in mice as follows: limb fractures with pelvic fractures and multiple rib fractures; limb fractures with multiple rib fractures; closed fracture of both forelegs with pelvic fracture and rib fractures; closed limb fractures; limb fracture with pelvic fracture; spinal fractures; hind leg fractures with pelvic fractures; pelvic fracture with multiple rib fractures; closed fracture of both fore legs with pelvic fracture; and closed fracture of both fore legs with multiple rib fractures. In each model group, gastrointestinal motility was assayed and the histopathology of the small intestine was examined. Western blot and immunohistochemical analyses of jejunal tissue were performed to detect c-kit protein expression, the level of which was compared with that of a control group. The results of ANOVA are expressed as mean ± standard deviation. RESULTS In mice with multiple fractures, food intake was greatly reduced, consistent with histopathological evidence of an injured intestinal epithelium. The jejunal tissue of mice in groups a, c, f, and h was characterized by extensively necrotic and exfoliated intestinal mucosal epithelium and inflammatory cell infiltration in the lamina propria. In the gastrointestinal function assay, gastrointestinal motility was significantly reduced in groups a, b, c, f, and g; these group also had a higher ISS (p < 0.01). The expression of c-kit protein in groups with gastrointestinal dysfunction was significantly up-regulated (p < 0.001) compared with the control group. The close correlation between c-kit expression and the ISS indicated an influence of trauma severity on gastrointestinal motility. CONCLUSION Gastrointestinal dysfunction after multiple fractures was successfully reproduced in a mouse model. In these mice, c-kit expression correlated with gastrointestinal tissue dysfunction and might serve as a therapeutic target.
Collapse
Affiliation(s)
- Shi-Jie Meng
- The First Clinical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Meng-Qiang Fan
- The First Clinical College, Zhejiang Chinese Medical University, Hangzhou, China.,Department of Orthopaedics & Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Jian-Sheng Qian
- The Third Clinical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Jing-Wen Zhang
- Research and Development Department, Cell Resource Bank and Integrated Cell Preparation Center of Xiaoshan District, Hangzhou, China
| | - Hui-Hui Xu
- The First Clinical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yang Zheng
- The First Clinical College, Zhejiang Chinese Medical University, Hangzhou, China.,Department of Orthopaedics & Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Wei-Qiang Zhao
- The First Clinical College, Zhejiang Chinese Medical University, Hangzhou, China.,Department of Orthopaedics & Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Le-Tian Shan
- The First Clinical College, Zhejiang Chinese Medical University, Hangzhou, China.,Department of Orthopaedics & Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Jie-Feng Huang
- The First Clinical College, Zhejiang Chinese Medical University, Hangzhou, China.,Department of Orthopaedics & Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| |
Collapse
|
10
|
Deng J, Chen XK, Guo FZ, Huang W, Zhu FX, Wang TB, Jiang BG. Respiratory Function Tolerance of Rats with Vaying Degrees of Thoracic Volume Reduction. Orthop Surg 2023; 15:1144-1152. [PMID: 36855908 PMCID: PMC10102318 DOI: 10.1111/os.13630] [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: 12/16/2020] [Revised: 08/26/2022] [Accepted: 08/31/2022] [Indexed: 03/02/2023] Open
Abstract
OBJECTIVE To compare the effects of respiratory function on different degrees of reduced thoracic volume and evaluate the tolerance of rats with reduced thoracic volume, and to assess the feasibility of thoracic volume as a measure of the severity of rib fractures. METHODS A total of 24 10-week-old female Sprague-Dawley (SD) rats were randomly divided into four groups (n = 6 in each group) according to the displacement degree of bilateral rib fractures (2, 4, 6, and 8 mm). The respiratory function of the rats(Tidal volume, Inspiration time, Expiration time, Breath rate, Minute volume, Peak inspiration flow) measured via whole-body barometric plethysmography before and after operation for 14 consecutive days. Respiratory function parameters of each group were analyzed. Chest CT scans were performed before and 14 days after operation, after that we reconstructed three-dimensional of the thoracic and lung and measured their volumes by computer software. We calculated the percentage of thoracic and lung volume reduction after operation. RESULTS At the 14th day after the operation, the decline of thoracic volume rates of in the 2, 4, 6, and 8 mm groups were 5.20%, 9.01%, 16.67%, and 20.74%, respectively. The 8 mm group showed a significant reduction in lung volume. The postoperative tidal volumes were lower in each of the groups than the baseline values before the operation. The tidal volume of the 2 mm group gradually recovered after the operation and returned to a normal level (1.54 ± 0.07 mL) at 14th day after the operation. The tidal volume of the 4, 6, and 8 mm groups recovered gradually after the operation, but did not return to baseline level at the 14th day. In particular, the tidal volume of the 8 mm group was significantly lower than that of the other groups during the 14 days (1.23 ± 0.12 mL, p < 0.05). There were no significant changes in the inspiratory and expiratory times, peak inspiratory and expiratory flows, respiratory rate, and minute ventilation during the 14 days after the operation in each group. CONCLUSIONS Displaced rib fractures lead to thoracic collapse and reduced thoracic volume, which can affect tidal volume in rats. The greater the decrease of thoracic volume, the more obvious the decrease of early tidal volume. The thoracic volume can be used as an objective parameter to evaluate the severity of multiple rib fractures. Early operation to restore thoracic volume may improve early respiratory function. Decreased thoracic volume affected respiratory function and can be compensated and recovered in the long term.
Collapse
Affiliation(s)
- Jiuxu Deng
- National Center for Trauma Medicine, Trauma Medicine Center, Ministry of Education Key Laboratory of Trauma and Neuroregeneration, Peking University People's Hospital, Beijing, China
| | - Xiao-Kun Chen
- National Center for Trauma Medicine, Trauma Medicine Center, Ministry of Education Key Laboratory of Trauma and Neuroregeneration, Peking University People's Hospital, Beijing, China
| | - Fu-Zheng Guo
- National Center for Trauma Medicine, Trauma Medicine Center, Ministry of Education Key Laboratory of Trauma and Neuroregeneration, Peking University People's Hospital, Beijing, China
| | - Wei Huang
- National Center for Trauma Medicine, Trauma Medicine Center, Ministry of Education Key Laboratory of Trauma and Neuroregeneration, Peking University People's Hospital, Beijing, China
| | - Feng-Xue Zhu
- National Center for Trauma Medicine, Trauma Medicine Center, Ministry of Education Key Laboratory of Trauma and Neuroregeneration, Peking University People's Hospital, Beijing, China
| | - Tian-Bing Wang
- National Center for Trauma Medicine, Trauma Medicine Center, Ministry of Education Key Laboratory of Trauma and Neuroregeneration, Peking University People's Hospital, Beijing, China
| | - Bao-Guo Jiang
- National Center for Trauma Medicine, Trauma Medicine Center, Ministry of Education Key Laboratory of Trauma and Neuroregeneration, Peking University People's Hospital, Beijing, China
| |
Collapse
|
11
|
Upadhayay S, Yedke NG, Rahi V, Singh S, Kumar S, Arora A, Chandolia P, Kaur P, Kumar M, Koshal P, Jamwal S, Kumar P. An Overview of the Pathophysiological Mechanisms of 3-Nitropropionic Acid (3-NPA) as a Neurotoxin in a Huntington's Disease Model and Its Relevance to Drug Discovery and Development. Neurochem Res 2023; 48:1631-1647. [PMID: 36738367 DOI: 10.1007/s11064-023-03868-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 01/20/2023] [Accepted: 01/21/2023] [Indexed: 02/05/2023]
Abstract
Animal models are used to better understand the various mechanisms involved in the pathogenesis of diseases and explore potential pathways that will aid in discovering therapeutic targets. 3-Nitropropionic Acid (3-NPA) is a neurotoxin used to induce Huntington's disease (HD)-like symptoms in experimental animals. The 3-NPA is a fungus toxin that impairs the complex II (succinate dehydrogenase) activity of the mitochondria and reduces ATP synthesis, leading to excessive production of free radicals resulting in the degeneration of GABAergic medium spiny neurons (MSNs) in the striatum. This is characterized by motor impairments a key clinical manifestation of HD. 3-NPA has the potential to alter several cellular processes, including mitochondrial functions, oxidative stress, apoptosis, and neuroinflammation mimicking HD-like pathogenic conditions in animals. This review strives to provide a new insight towards the 3-NPA induced molecular dysfunctioning in developing an animal model of HD. Moreover, we summarise several preclinical studies that support the use of the 3-NPA-induced models for drug discovery and development in HD. This review is a collection of various articles that were published from 1977 to 2022 on Pubmed (1639), Web of Science (2139), and Scopus (2681), which are related to the 3-NPA induced animal model.
Collapse
Affiliation(s)
- Shubham Upadhayay
- Department of Pharmacology, Central University of Punjab, Ghudda, Bathinda, 151401, India
| | - Narhari Gangaram Yedke
- Department of Pharmacology, Central University of Punjab, Ghudda, Bathinda, 151401, India
- Department of Pharmaceutical Sciences & Technology, Maharaja Ranjit Singh Punjab Technical University, Bathinda, Punjab, India
| | - Vikrant Rahi
- Department of Pharmaceutical Sciences, Punjab College of Technical Education, Baddowal Firozpur, Ludhiana, 142021, India
| | - Surbhi Singh
- Department of Pharmacology, Central University of Punjab, Ghudda, Bathinda, 151401, India
| | - Sachin Kumar
- Department of Pharmaceutical Sciences & Technology, Maharaja Ranjit Singh Punjab Technical University, Bathinda, Punjab, India
| | - Anchal Arora
- Department of Pharmacology, All India Institute of Medical Sciences, Bathinda, Punjab, 151001, India
| | - Priyanka Chandolia
- Department of Pharmaceutical Sciences & Technology, Maharaja Ranjit Singh Punjab Technical University, Bathinda, Punjab, India
| | - Prabhsharan Kaur
- Department of Pharmaceutical Sciences & Technology, Maharaja Ranjit Singh Punjab Technical University, Bathinda, Punjab, India
| | - Mandeep Kumar
- Department of Pharmacology, ISF College of Pharmacy, Moga, Punjab, 142001, India
| | - Prashant Koshal
- Department of Science, University of Basilicata, Potenza, Italy
| | - Sumit Jamwal
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, 06511, USA
| | - Puneet Kumar
- Department of Pharmacology, Central University of Punjab, Ghudda, Bathinda, 151401, India.
| |
Collapse
|
12
|
Yan B, Tang S, Zhang Y, Xiao X. The Role of Glia Underlying Acupuncture Analgesia in Animal Pain Models: A Systematic Review and Meta-Analysis. Pain Med 2023; 24:11-24. [PMID: 35916732 DOI: 10.1093/pm/pnac115] [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: 05/04/2022] [Revised: 07/10/2022] [Accepted: 07/27/2022] [Indexed: 02/06/2023]
Abstract
BACKGROUND As a traditional Chinese therapy, acupuncture is proposed worldwide as a treatment for pain and other health problems, but findings on acupuncture analgesia have been inconsistent because of its variable modalities of therapeutic intervention. OBJECTIVE This study aimed to evaluate the existing animal studies for evidence on acupuncture and its effect on glia in association with a reduction in pain conditions. METHODS Literature searches were performed in four English- and Chinese-language databases (Web of Science, PubMed, EMBASE, and CNKI) on October 8, 2021. Included studies reported the pain outcome (e.g., paw withdrawal latency, paw withdrawal threshold) and glia outcome (e.g., glial marker GFPA, Iba1, and OX42) in pain-induced animals during acupuncture treatment. RESULTS Fifty-two preclinical studies were included in the meta-analysis. A single acupuncture treatment in rodents had an analgesic effect, which was more effective in inflammatory pain than in neuropathic pain in the early phase of treatment. The analgesic efficacy became more curative after repeated acupuncture. Furthermore, acupuncture treatment could effectively inhibit the activity of astrocytes and microglia in both inflammatory pain and neuropathic pain in a time-course pattern. CONCLUSIONS Acupuncture treatment improves analgesic effect in rodent pain conditions under the possible mechanism of glial inhibition. Therefore, these results provide an opportunity to evaluate the effectiveness of acupuncture analgesia and neuroinflammation in animal models to research further neurobiological mechanisms and to inform the design of future clinical trials. STUDY REGISTRATION PROSPERO (ID: CRD42020196011).
Collapse
Affiliation(s)
- Bing Yan
- Key Laboratory of Computational Neuroscience and Brain-Inspired Intelligence, Ministry of Education; Behavioral and Cognitive Neuroscience Center, Institute of Science and Technology for Brain-Inspired Intelligence; MOE Frontiers Center for Brain Science, Fudan University, Shanghai, China
| | - Shengyu Tang
- School of Life Sciences, Fudan University, Shanghai, China
| | - Yuqiu Zhang
- State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, Institutes of Brain Science; Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Xiao Xiao
- Key Laboratory of Computational Neuroscience and Brain-Inspired Intelligence, Ministry of Education; Behavioral and Cognitive Neuroscience Center, Institute of Science and Technology for Brain-Inspired Intelligence; MOE Frontiers Center for Brain Science, Fudan University, Shanghai, China
| |
Collapse
|
13
|
Liu WY, Ladha R, Liu H, Horner RL. Thyrotropin-Releasing Hormone Analog as a Stable Upper Airway-Preferring Respiratory Stimulant with Arousal Properties. J Appl Physiol (1985) 2022; 133:1067-1080. [PMID: 36135952 DOI: 10.1152/japplphysiol.00414.2022] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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: 11/22/2022] Open
Abstract
Taltirelin is a stable, brain-penetrating thyrotropin-releasing hormone (TRH) analog with minimal endocrine activity and potential respiratory stimulant properties. Taltirelin's receptor target shows high differential expression at the hypoglossal motor nucleus, and local taltirelin microperfusion into the hypoglossal motor nucleus causes sustained tongue motor activation compared to the transient activating effects of TRH itself. Here we performed a randomized, within-subject, repeated measures design over six separate study days (separated by at least 72 hrs) in chronically instrumented male (n=10) and female (n=9) rats to identify effects on sleep and breathing. Vehicle controls or taltirelin (0.1 and 1 mg/kg), with and without trazodone (30 mg/kg) were administered by intraperitoneal injection. Trazodone was included due to clinical interest in the context of sleep apnea pharmacotherapy as it can suppress arousal without compromising pharyngeal muscle activity. Systemically administered taltirelin (1 but not 0.1 mg/kg) increased tonic and within-breath phasic tonic muscle activity compared to vehicle controls (P < 0.007), with little or no changes in diaphragm amplitude or respiratory rate. Taltirelin also suppressed non-rapid eye movement (non-REM) sleep and increased wakefulness (P <0.037). Other indices of taltirelin-induced central nervous system arousal included increased trapezius muscle tone in non-REM sleep and decreased total electroencephalogram power and delta (0.5-4 Hz) power (P < 0.046). These effects were especially apparent in non-REM sleep and not prevented by trazodone. These pre-clinical findings identify taltirelin as a stable upper airway-preferring respiratory stimulant with arousal properties, traits that have potential favorable relevance to some respiratory disorders but not others.
Collapse
Affiliation(s)
- Wen-Ying Liu
- Department of Physiology, University of Toronto, Toronto, ON, Canada
| | - Raina Ladha
- Department of Physiology, University of Toronto, Toronto, ON, Canada
| | - Hattie Liu
- Department of Physiology, University of Toronto, Toronto, ON, Canada
| | - Richard L Horner
- Department of Physiology, University of Toronto, Toronto, ON, Canada.,Department of Medicine, University of Toronto, Toronto, ON, Canada
| |
Collapse
|
14
|
Zhai Z, Xie D, Qin T, Zhong Y, Xu Y, Sun T. Effect and Mechanism of Exogenous Melatonin on Cognitive Deficits in Animal Models of Alzheimer's Disease: A Systematic review and Meta-analysis. Neuroscience 2022; 505:91-110. [PMID: 36116555 DOI: 10.1016/j.neuroscience.2022.09.012] [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: 06/14/2022] [Revised: 09/05/2022] [Accepted: 09/08/2022] [Indexed: 12/09/2022]
Abstract
Melatonin (MT) has been reported to control and prevent Alzheimer's disease (AD) in the clinic; however, the effect and mechanism of MT on AD have not been specifically described. Therefore, the main purpose of this meta-analysis was to explore the effect and mechanism of MT on AD models by studying behavioural indicators and pathological features. Seven databases were searched and 583 articles were retrieved. Finally, nine studies (13 analyses, 294 animals) were included according to pre-set criteria. Three authors independently judged the selected literature and the methodological quality. Meta-analysis showed that MT markedly ameliorated the learning ability by reducing the escape latency (EL), and the memory deficit was significantly corrected by increasing the dwell time in the target quadrant and crossings over the platform location in the Morris Water Maze (MWM). Among the pathological features, subgroup analysis found that MT may ease the symptoms of AD mainly by reducing the deposition of Aβ40 and Aβ42 in the cortex. In addition, MT exerted a superior effect on ameliorating the learning ability of senescence-related and metabolic AD models, and corrected the memory deficit of the toxin-induced AD model. The study was registered at PROSPERO (CRD42021226594).
Collapse
Affiliation(s)
- Zhenwei Zhai
- School of Medical Information Engineering, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.
| | - Danni Xie
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.
| | - Tao Qin
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.
| | - Yanmei Zhong
- School of Medical Information Engineering, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.
| | - Ying Xu
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, China.
| | - Tao Sun
- School of Medical Information Engineering, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China; State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.
| |
Collapse
|
15
|
Egger M, Hoenigl M, Thompson GR, Carvalho A, Jenks JD. Let's talk about Sex Characteristics - as a Risk Factor for Invasive Fungal Diseases. Mycoses 2022; 65:599-612. [PMID: 35484713 DOI: 10.1111/myc.13449] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [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: 04/07/2022] [Revised: 04/21/2022] [Accepted: 04/22/2022] [Indexed: 12/01/2022]
Abstract
Biological sex, which comprises differences in host sex hormone homeostasis and immune responses, can have a substantial impact on the epidemiology of infectious diseases. Comprehensive data on sex distributions in invasive fungal diseases (IFDs) is lacking. In this review we performed a literature search of in vitro/animal studies, clinical studies, systematic reviews, and meta-analyses of invasive fungal infections. Females represented 51.2% of invasive candidiasis cases, mostly matching the proportions of females among the general population in the United States and Europe (>51%). In contrast, other IFDs were overrepresented in males, including invasive aspergillosis (51% males), mucormycosis (60%), cryptococcosis (74%), coccidioidomycosis (70%), histoplasmosis (61%), and blastomycosis (66%). Behavioral variations, as well as differences related to biological sex, may only in part explain these findings. Further investigations concerning the association between biological sex/gender and the pathogenesis of IFDs is warranted.
Collapse
Affiliation(s)
- Matthias Egger
- Division of Infectious Diseases, Medical University of Graz, Austria
| | - Martin Hoenigl
- Division of Infectious Diseases, Medical University of Graz, Austria.,Division of Infectious Diseases and Global Public Health, Department of Medicine, University of California San Diego, La Jolla, CA, USA.,Clinical and Translational Fungal - Working Group, University of California San Diego, La Jolla, CA, USA
| | - George R Thompson
- University of California Davis Center for Valley Fever, California, USA.,Department of Internal Medicine, Division of Infectious Diseases, University of California Davis Medical Center, California, USA.,Department of Medical Microbiology and Immunology, University of California Davis, California, USA
| | - Agostinho Carvalho
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's -, PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | | |
Collapse
|
16
|
Ramos-Fresnedo A, Perez-Vega C, Domingo RA, Lee SJ, Perkerson RB, Zubair AC, Kanekiyo T, Tatum W, Quinones-Hinojosa A, Middlebrooks EH, Grewal SS. Mesenchymal Stem Cell Therapy for Focal Epilepsy: A Systematic Review of Preclinical Models and Clinical Studies. Epilepsia 2022; 63:1607-1618. [PMID: 35451066 DOI: 10.1111/epi.17266] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 12/21/2021] [Revised: 04/19/2022] [Accepted: 04/19/2022] [Indexed: 11/03/2022]
Abstract
Drug resistant epilepsy (DRE) is characterized by recurrent seizures despite appropriate treatment with antiseizure medication (ASM). Due to their regenerative and immunomodulatory potential, therapies with biologics such as mesenchymal stem cells (MSCs) offer a potential therapeutic benefit for structural causes of epilepsy, such as hippocampal sclerosis. In this manuscript, we report a systematic review of the literature evaluating the preclinical and clinical studies of MSCs for DRE. Medline, Ovid EMBASE, Scopus, and the Cochrane Databases were electronically searched from their dates of inception to November 2021 using the following keywords: (("mesenchymal") AND ("stem cell")) AND (("epilepsy") OR ("convulsion") OR ("seizures")). This review followed the PRISMA guidelines. The initial query identified 488 studies representing 323 unique manuscripts. After application of selection criteria, 15 studies were included in this systematic review; 11 were preclinical studies and 4 were clinical studies. All preclinical studies were performed in rodents and all clinical studies were phase 1 trials. Thus far, therapy with MSCs appears to be safe for use in humans, as no severe adverse events directly related to the therapy were reported. Furthermore, MSC therapy appears to provide a statistically significant clinical benefit by reducing the seizure burden of patients, reducing the electrophysiological biomarkers of epilepsy, and improving their comorbidities, such as depression and anxiety. Additionally, animal studies reveal that the therapy exerts its effect by reducing aberrant mossy fiber sprouting (reduce excitatory pathways) and increasing GABAergic interneurons (increase inhibitory pathways). Both preclinical and clinical studies have shown MSC therapy to be safe and preliminary effective, thus warranting further studies to investigate its therapeutic potential.
Collapse
Affiliation(s)
| | - Carlos Perez-Vega
- Department of Neurologic Surgery, Mayo Clinic, Jacksonville, Florida, USA
| | - Ricardo A Domingo
- Department of Neurologic Surgery, Mayo Clinic, Jacksonville, Florida, USA
| | - Seung Jin Lee
- Department of Neurologic Surgery, Mayo Clinic, Jacksonville, Florida, USA
| | - Ralph B Perkerson
- Department of Neuroscience and Center for Regenerative Medicine, Mayo Clinic, Jacksonville, Florida, USA
| | - Abba C Zubair
- Laboratory Medicine and Pathology and Center for Regenerative Medicine, Mayo Clinic, Jacksonville, Florida, USA
| | - Takahisa Kanekiyo
- Department of Neuroscience and Center for Regenerative Medicine, Mayo Clinic, Jacksonville, Florida, USA
| | - William Tatum
- Department of Neurology, Mayo Clinic, Jacksonville, Florida, USA
| | | | - Erik H Middlebrooks
- Department of Radiology, Division of Neuroradiology, Mayo Clinic, Jacksonville, Florida, USA
| | - Sanjeet S Grewal
- Department of Neurologic Surgery, Mayo Clinic, Jacksonville, Florida, USA
| |
Collapse
|
17
|
Maciag M, Wnorowski A, Bednarz K, Plazinska A. Evaluation of β-adrenergic ligands for development of pharmacological heart failure and transparency models in zebrafish. Toxicol Appl Pharmacol 2022; 434:115812. [PMID: 34838787 DOI: 10.1016/j.taap.2021.115812] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 09/06/2021] [Revised: 10/25/2021] [Accepted: 11/22/2021] [Indexed: 10/19/2022]
Abstract
Cardiovascular toxicity represents one of the most common reasons for clinical trial failure. Consequently, early identification of novel cardioprotective strategies could prevent the later-stage drug-induced cardiac side effects. The use of zebrafish (Danio rerio) in preclinical studies has greatly increased. High-throughput and low-cost of assays make zebrafish model ideal for initial drug discovery. A common strategy to induce heart failure is a chronic β-adrenergic (βAR) stimulation. Herein, we set out to test a panel of βAR agonists to develop a pharmacological heart failure model in zebrafish. We assessed βAR agonists with respect to the elicited mortality, changes in heart rate, and morphological alterations in zebrafish larvae according to Fish Embryo Acute Toxicity Test. Among the tested βAR agonists, epinephrine elicited the most potent onset of heart stimulation (EC50 = 0.05 mM), which corresponds with its physiological role as catecholamine. However, when used at ten-fold higher dose (0.5 mM), the same compound caused severe heart rate inhibition (-28.70 beats/min), which can be attributed to its cardiotoxicity. Further studies revealed that isoetharine abolished body pigmentation at the sublethal dose of 7.50 mM. Additionally, as a proof of concept that zebrafish can mimic human cardiac physiology, we tested βAR antagonists (propranolol, carvedilol, metoprolol, and labetalol) and verified that they inhibited fish heart rate in a similar fashion as in humans. In conclusion, we proposed two novel pharmacological models in zebrafish; i.e., epinephrine-dependent heart failure and isoetharine-dependent transparent zebrafish. We provided strong evidence that the zebrafish model constitutes a valuable tool for cardiovascular research.
Collapse
Affiliation(s)
- Monika Maciag
- Department of Biopharmacy, Medical University of Lublin, 4a Chodzki Street, 20-093 Lublin, Poland; Independent Laboratory of Behavioral Studies, Medical University of Lublin, 4a Chodzki Street, 20-093 Lublin, Poland.
| | - Artur Wnorowski
- Department of Biopharmacy, Medical University of Lublin, 4a Chodzki Street, 20-093 Lublin, Poland.
| | - Kinga Bednarz
- Department of Biopharmacy, Medical University of Lublin, 4a Chodzki Street, 20-093 Lublin, Poland
| | - Anita Plazinska
- Department of Biopharmacy, Medical University of Lublin, 4a Chodzki Street, 20-093 Lublin, Poland.
| |
Collapse
|
18
|
Morgan EE, Morran MP, Horen NG, Weaver DA, Nestor-Kalinoski AL. RNO3 QTL Regulates Vascular Structure and Arterial Stiffness in the Spontaneously Hypertensive Rat. Physiol Genomics 2021; 53:534-545. [PMID: 34755572 PMCID: PMC9275012 DOI: 10.1152/physiolgenomics.00038.2021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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] [Indexed: 11/22/2022] Open
Abstract
Increased arterial stiffness is an independent risk factor for hypertension, stroke, and cardiovascular morbidity. Thus, understanding the factors contributing to vascular stiffness is of critical importance. Here, we used a rat model containing a known quantitative trait locus (QTL) on chromosome 3 (RNO3) for vasoreactivity to assess potential genetic elements contributing to blood pressure, arterial stiffness, and their downstream effects on cardiac structure and function. Although no differences were found in blood pressure at any time point between parental spontaneously hypertensive rats (SHRs) and congenic SHR.BN3 rats, the SHRs showed a significant increase in arterial stiffness measured by pulse wave velocity. The degree of arterial stiffness increased with age in the SHRs and was associated with compensatory cardiac changes at 16 wk of age, and decompensatory changes at 32 wk, with no change in cardiac structure or function in the SHR.BN3 hearts at these time points. To evaluate the arterial wall structure, we used multiphoton microscopy to quantify cells and collagen content within the adventitia and media of SHR and SHR.BN3 arteries. No difference in cell numbers or proliferation rates was found, although phenotypic diversity was characterized in vascular smooth muscle cells. Herein, significant anatomical and physiological differences related to arterial structure and cardiovascular tone including collagen, pulse wave velocity (PWV), left ventricular (LV) geometry and function, and vascular smooth muscle cell (VSMC) contractile apparatus proteins were associated with the RNO3 QTL, thus providing a novel platform for studying arterial stiffness. Future studies delimiting the RNO3 QTL could aid in identifying genetic elements responsible for arterial structure and function.
Collapse
Affiliation(s)
- Eric E Morgan
- Department of Surgery, University of Toledo, Toledo, Ohio, United States.,Advanced Microscopy and Imaging Center, University of Toledo, Toledo, OH, United States.,Department of Radiology, Nationwide Children's Hospital, Columbus, Ohio, United States
| | - Michael P Morran
- Department of Surgery, University of Toledo, Toledo, Ohio, United States.,Advanced Microscopy and Imaging Center, University of Toledo, Toledo, OH, United States
| | - Nicholas G Horen
- Department of Medicine, University of Toledo, Toledo, Ohio, United States
| | - David A Weaver
- Department of Surgery, University of Toledo, Toledo, Ohio, United States.,Advanced Microscopy and Imaging Center, University of Toledo, Toledo, OH, United States
| | - Andrea L Nestor-Kalinoski
- Department of Surgery, University of Toledo, Toledo, Ohio, United States.,Advanced Microscopy and Imaging Center, University of Toledo, Toledo, OH, United States
| |
Collapse
|
19
|
Westra WM, Straub D, Milano F, Buttar NS, Wang KK, Krishnadath KK. Inhibition of the BMP pathway prevents development of Barrett's-associated adenocarcinoma in a surgical rat model. Dis Esophagus 2021; 35:6412930. [PMID: 34718471 PMCID: PMC9113020 DOI: 10.1093/dote/doab072] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 08/30/2021] [Accepted: 09/19/2021] [Indexed: 12/11/2022]
Abstract
INTRODUCTION Esophageal adenocarcinoma (EAC) is an aggressive cancer, associated with reflux esophagitis and intestinal metaplasia (IM). One underlying biological mechanism, which possibly drives the development of EAC, is the dysregulated expression of Bone Morphogenetic Proteins (BMPs). AIM To investigate if local delivery of Noggin, a BMP antagonist, reduced EAC. METHODS After obtaining proof of principal on local delivery of a Noggin/Sucralfate substance, a randomized controlled trial to test the effects of Noggin on EAC development was performed in a surgical rat model. In the model, an esophago-jejunostomy leads to development of reflux-esophagitis, IM and eventually EAC. Rats were treated by Noggin/Sucralfate or Sucralfate alone. Treatment was administered from 26 to 29 weeks after the operation. RESULTS Of the 112 operated rats, 52 survived beyond 26 weeks. Finally, 25 rats treated with Noggin/Sucralfate and 21 with Sucralfate, were evaluated. At the end, 39 (85%) of the animals had IM while 28 (61%) developed cancer. There were significantly more cancers in the Noggin/Sucralfate arm (50%) versus the Sucralfate group (73%) (Chi square, P < 0.05). Most cancers were mucous producing T3 adenocarcinomas. There were no significant differences in the amount of IM, size or grade of the cancers, or expression of columnar and squamous markers between the two groups. CONCLUSION In this study, we demonstrated that inhibition of BMPs by Noggin reduced development of EAC in a surgical esophagitis-IM-EAC rat model. In future, effective targeting of the BMP pathway with selective BMP-inhibitors could become an important asset to improve EAC patient outcome.
Collapse
Affiliation(s)
- Wytske M Westra
- Center for Experimental and Molecular Medicine (CEMM), AUMC, Amsterdam, The Netherlands,Department of Gastroenterology and Hepatology, Amsterdam UMC, Amsterdam, The Netherlands,Department of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota, USA
| | - Danielle Straub
- Center for Experimental and Molecular Medicine (CEMM), AUMC, Amsterdam, The Netherlands
| | - Francesca Milano
- Center for Experimental and Molecular Medicine (CEMM), AUMC, Amsterdam, The Netherlands
| | - Navtej S Buttar
- Department of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota, USA
| | - Kenneth K Wang
- Department of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota, USA
| | - Kausilia K Krishnadath
- Address correspondence to: Professor Kausilia K. Krishnadath, Department of Gastroenterology, University of Amsterdam Medical Center, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands. Tel: +31 20 5666703; Fax: +31 20 6917033;
| |
Collapse
|
20
|
Liu K, Liu J, Zou B, Li C, Zeh HJ, Kang R, Kroemer G, Huang J, Tang D. Trypsin-Mediated Sensitization to Ferroptosis Increases the Severity of Pancreatitis in Mice. Cell Mol Gastroenterol Hepatol 2021; 13:483-500. [PMID: 34562639 PMCID: PMC8688567 DOI: 10.1016/j.jcmgh.2021.09.008] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 09/14/2021] [Accepted: 09/15/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND & AIMS Pancreatitis is characterized by acinar cell death and persistent inflammation. Ferroptosis is a type of lipid peroxidation-dependent necrosis, which is negatively regulated by glutathione peroxidase 4. We studied how trypsin, a serine protease secreted by pancreatic acinar cells, affects the contribution of ferroptosis to triggering pancreatitis. METHODS In vitro, the mouse pancreatic acinar cell line 266-6 and mouse primary pancreatic acinar cells were used to investigate the effect of exogenous trypsin on ferroptosis sensitivity. Short hairpin RNAs were designed to silence gene expression, whereas a library of 1080 approved drugs was used to identify new ferroptosis inhibitors in 266-6 cells. In vivo, a Cre/LoxP system was used to generate mice with a pancreas-specific knockout of Gpx4 (Pdx1-Cre;Gpx4flox/flox mice). Acute or chronic pancreatitis was induced in these mice (Gpx4flox/flox mice served as controls) by cerulein injections or a Lieber-DeCarli alcoholic liquid diet. Pancreatic tissues, acinar cells, and serum were collected and analyzed by histology, immunoblot, quantitative polymerase chain reaction, enzyme-linked immunosorbent assay, or immunohistochemical analyses. RESULTS Supraphysiological doses of trypsin (500 or 1000 ng/mL) alone did not trigger significant cell death in 266-6 cells and mouse primary pancreatic acinar cells, but did increase the sensitivity of these cells to ferroptosis upon treatment with cerulein, L-arginine, alcohol, erastin, or RSL3. Proteasome 26S subunit, non-adenosine triphosphatase 4-dependent lipid peroxidation caused ferroptosis in pancreatic acinar cells by promoting the proteasomal degradation of glutathione peroxidase 4. The drug screening campaign identified the antipsychotic drug olanzapine as an antioxidant inhibiting ferroptosis in pancreatic acinar cells. Mice lacking pancreatic Gpx4 developed more severe pancreatitis after cerulein infection or ethanol feeding than control mice. Conversely, olanzapine administration protected against pancreatic ferroptotic damage and experimental pancreatitis in Gpx4-deficient mice. CONCLUSIONS Trypsin-mediated sensitization to ferroptotic damage increases the severity of pancreatitis in mice, and this process can be reversed by olanzapine.
Collapse
Affiliation(s)
- Ke Liu
- Department of Ophthalmology, The 2nd Xiangya Hospital, Central South University, Changsha, China
| | - Jiao Liu
- The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Borong Zou
- The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Changfeng Li
- Department of Endoscopy Center, China–Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Herbert J. Zeh
- Department of Surgery, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Rui Kang
- Department of Surgery, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Guido Kroemer
- Centre de Recherche des Cordeliers, Equipe Labellisée par la Ligue Contre le Cancer, Université de Paris, Sorbonne Université, INSERM U1138, Institut Universitaire de France, Paris, France,Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France,Pôle de Biologie, Hôpital Européen Georges Pompidou, AP-HP, Paris, France
| | - Jun Huang
- Department of Orthopaedics, The 2nd Xiangya Hospital, Central South University, Changsha, China,Jun Huang, MD, Department of Orthopaedics, The 2nd Xiangya Hospital, Central South University, Changsha 410011, China. fax: (86) 731-85295999
| | - Daolin Tang
- Department of Surgery, University of Texas Southwestern Medical Center, Dallas, Texas,Correspondence Address correspondence to: Daolin Tang, MD, Department of Surgery, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75390
| |
Collapse
|
21
|
Huang Y, Peng D, Geng H, Dai Y, Jiang H, Zhang X. Endogenous Deficiency of Brain-Derived Neurotrophic Factor Induces the Downregulation of Tryptophan Hydroxylase-2 Expression in Raphe Nuclei of Rapid Ejaculator Rats. J Sex Med 2021; 18:1491-1499. [PMID: 37057442 DOI: 10.1016/j.jsxm.2021.07.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 04/02/2021] [Revised: 07/03/2021] [Accepted: 07/19/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Premature ejaculation (PE) is one of the most common ejaculatory disorders. Recent studies have suggested a close relationship between the serotonin (5-hydroxytryptamine [5-HT]) system and brain-derived neurotrophic factor (BDNF), raising the question of whether BDNF plays a role in ejaculation regulation. To our knowledge, no previous studies have explored BDNF level of the central nervous system in ejaculatory disorders. At the same time, the interaction of central BDNF and 5-HT systems has not been undertaken in ejaculation regulation field. AIM The aim of this study was to investigate the interaction between BDNF and 5-HT levels in raphe nuclei which contains the serotonergic neurons in a rat animal model with different ejaculatory behavior. METHODS Eighteen male rats were selected and classified as "sluggish," "normal," and "rapid" ejaculators on the basis of ejaculation frequency during copulatory behavioral testing. BDNF and 5-HT levels were determined by enzyme-linked immunosorbent assay (ELISA). Real-Time Quantitative PCR and Western blot analyses were used to measure the mRNA level of Tryptophan Hydroxylase-2 (TPH2) gene and the expression of TPH2 protein (the rate-limiting enzyme in central 5-HT synthesis) in raphe nuclei, respectively. OUTCOMES Male rat sexual behavior, the levels of BDNF and 5-HT in raphe nuclei of rats with different ejaculatory behavior, the mRNA level of gene encoding TPH2 and the expression of TPH2 protein in raphe nuclei. RESULTS The primary finding of our study was that BDNF concentration was significantly decreased in raphe nuclei of rapid ejaculators. There was a strong positive correlation between the levels of BDNF and 5-HT (r = 0.944, P < .001). Further results showed that decreased TPH2 gene expression accompanied by TPH2 protein was shown in rapid ejaculators with lower BDNF level. CLINICAL IMPLICATIONS With refinement of current knowledge, BDNF may eventually serve as a promising biomarker in patients with PE. STRENGTHS & LIMITATIONS There are no previous studies examining the interaction of the brain BDNF and 5-HT in ejaculation regulation field. The main limitation is the limited sample size. CONCLUSION BDNF may act via increasing the synthesis of central 5-HT in the process of ejaculation regulation. Our results suggest lack of endogenous BDNF induces the downregulation of TPH2 gene expression and the decrease of 5-HT synthesis in raphe nuclei of rapid ejaculator rats.
Collapse
Affiliation(s)
- Yuanyuan Huang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Dangwei Peng
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Hao Geng
- Department of Obstetrics and Gynecology, Reproductive Medicine Center, The First Affiliated Hospital of Anhui Medical University, Hefei, China; NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, Hefei, China; Key Laboratory of Population Health Across Life Cycle, Anhui Medical University, Hefei, China
| | - Yutian Dai
- Department of Andrology, Affiliated Drum Tower Hospital, School of Medicine, Nanjing University, Nanjing, China.
| | - Hui Jiang
- Department of Andrology, Peking University Third Hospital, Beijing, China.
| | - Xiansheng Zhang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, China.
| |
Collapse
|
22
|
Mercel AI, Marulanda K, Gillis DC, Sun K, Clemons TD, Willcox S, Griffith J, Peters EB, Karver MR, Tsihlis ND, Maile R, Stupp SI, Kibbe MR. Development of novel nanofibers targeted to smoke-injured lungs. Biomaterials 2021; 274:120862. [PMID: 33975274 DOI: 10.1016/j.biomaterials.2021.120862] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 11/02/2020] [Revised: 03/02/2021] [Accepted: 04/26/2021] [Indexed: 11/26/2022]
Abstract
Smoke inhalation injury is associated with significant mortality and current therapies remain supportive. The purpose of our study was to identify proteins upregulated in the lung after smoke inhalation injury and develop peptide amphiphile nanofibers that target these proteins. We hypothesize that nanofibers targeted to angiotensin-converting enzyme or receptor for advanced glycation end products will localize to smoke-injured lungs. METHODS Five targeting sequences were incorporated into peptide amphiphile monomers methodically to optimize nanofiber formation. Nanofiber formation was assessed by conventional transmission electron microscopy. Rats received 8 min of wood smoke. Levels of angiotensin-converting enzyme and receptor for advanced glycation end products were evaluated by immunofluorescence. Rats received the targeted nanofiber 23 h after injury via tail vein injection. Nanofiber localization was determined by fluorescence quantification. RESULTS Peptide amphiphile purity (>95%) and nanofiber formation were confirmed. Target proteins were increased in smoke inhalation versus sham (p < 0.001). After smoke inhalation and injection of targeted nanofibers, we found a 10-fold increase in angiotensin-converting enzyme-targeted nanofiber localization to lung (p < 0.001) versus sham with minimal localization of non-targeted nanofiber (p < 0.001). CONCLUSIONS We synthesized, characterized, and evaluated systemically delivered targeted nanofibers that localized to the site of smoke inhalation injury in vivo. Angiotensin-converting enzyme-targeted nanofibers serve as the foundation for developing a novel nanotherapeutic that treats smoke inhalation lung injury.
Collapse
Affiliation(s)
- Alexandra I Mercel
- Department of Surgery, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Kathleen Marulanda
- Department of Surgery, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - David C Gillis
- Department of Surgery, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Kui Sun
- Department of Surgery, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Tristan D Clemons
- Simpson Querrey Institute, Northwestern University, Chicago, IL, 60611, USA; Department of Chemistry, Northwestern University, Evanston, IL, 60208, USA
| | - Smaranda Willcox
- Department of Biochemistry and Biophysics, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Jack Griffith
- Department of Biochemistry and Biophysics, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Erica B Peters
- Department of Surgery, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Mark R Karver
- Simpson Querrey Institute, Northwestern University, Chicago, IL, 60611, USA
| | - Nick D Tsihlis
- Department of Surgery, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Rob Maile
- Department of Surgery, University of North Carolina, Chapel Hill, NC, 27599, USA; Department of Microbiology and Immunology, University of North Carolina, Chapel Hill, NC, 27599, USA; Curriculum of Toxicology and Environmental Medicine, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Samuel I Stupp
- Simpson Querrey Institute, Northwestern University, Chicago, IL, 60611, USA; Department of Chemistry, Northwestern University, Evanston, IL, 60208, USA; Department of Materials Science & Engineering, Northwestern University, Evanston, IL, 60208, USA; Department of Medicine, Northwestern University, Chicago, IL, 60611, USA; Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Melina R Kibbe
- Department of Surgery, University of North Carolina, Chapel Hill, NC, 27599, USA; Department of Biomedical Engineering, University of North Carolina, Chapel Hill, NC, 27599, USA.
| |
Collapse
|
23
|
Rudd JM, Selvan MT, Cowan S, Kao YF, Midkiff CC, Ritchey JW, Miller CA. Clinicopathologic features of a feline SARS-CoV-2 infection model parallel acute COVID-19 in humans. bioRxiv 2021:2021.04.14.439863. [PMID: 33880467 PMCID: PMC8057232 DOI: 10.1101/2021.04.14.439863] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The emergence and ensuing dominance of COVID-19 on the world stage has emphasized the urgency of efficient animal models for the development of therapeutics and assessment of immune responses to SARS-CoV-2 infection. Shortcomings of current animal models for SARS-CoV-2 include limited lower respiratory disease, divergence from clinical COVID-19 disease, and requirements for host genetic modifications to permit infection. This study validates a feline model for SARS-CoV-2 infection that results in clinical disease and histopathologic lesions consistent with severe COVID-19 in humans. Intra-tracheal inoculation of concentrated SARS-CoV-2 caused infected cats to develop clinical disease consistent with that observed in the early exudative phase of COVID-19. A novel clinical scoring system for feline respiratory disease was developed and utilized, documenting a significant degree of lethargy, fever, dyspnea, and dry cough in infected cats. In addition, histopathologic pulmonary lesions such as diffuse alveolar damage, hyaline membrane formation, fibrin deposition, and proteinaceous exudates were observed due to SARS-CoV-2 infection, imitating lesions identified in people hospitalized with ARDS from COVID-19. A significant correlation exists between the degree of clinical disease identified in infected cats and pulmonary lesions. Viral loads and ACE2 expression were quantified in nasal turbinates, distal trachea, lung, and various other organs. Natural ACE2 expression, paired with clinicopathologic correlates between this feline model and human COVID-19, encourage use of this model for future translational studies.
Collapse
Affiliation(s)
- Jennifer M. Rudd
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Oklahoma State University; Stillwater, OK, USA
| | - Miruthula Tamil Selvan
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Oklahoma State University; Stillwater, OK, USA
| | - Shannon Cowan
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Oklahoma State University; Stillwater, OK, USA
| | - Yun-Fan Kao
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Oklahoma State University; Stillwater, OK, USA
| | - Cecily C. Midkiff
- Division of Comparative Pathology, National Primate Research Center, Tulane University; Covington, LA, USA
| | - Jerry W. Ritchey
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Oklahoma State University; Stillwater, OK, USA
| | - Craig A. Miller
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Oklahoma State University; Stillwater, OK, USA
| |
Collapse
|
24
|
Capcha JMC, Moreira RS, Rodrigues CE, Silveira MAD, Andrade L, Gomes SA. Using the Cecal Ligation and Puncture Model of Sepsis to Induce Rats to Multiple Organ Dysfunction. Bio Protoc 2021; 11:e3979. [PMID: 33889673 DOI: 10.21769/bioprotoc.3979] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 09/12/2020] [Revised: 01/10/2021] [Accepted: 01/13/2021] [Indexed: 12/29/2022] Open
Abstract
Sepsis is a dysregulated hyperinflammatory disease caused by infection. Sepsis leads to multiple organ dysfunction syndrome (MODS), which is associated with high rates of mortality. The cecal ligation and puncture (CLP) model has been widely used in animals and has become the gold-standard method of replicating features of sepsis in humans. Despite several studies and modified CLP protocols, there are still open questions regarding the multifactorial determinants of its reproducibility and medical significance. In our protocol, which is also aimed at mimicking the sepsis observed in clinical practice, male Wistar rats are submitted to CLP with adequate fluid resuscitation (0.15 M NaCl, 25 ml/kg BW i.p.) immediately after surgery. At 6 h after CLP, additional fluid therapy (0.15 M NaCl, 25 ml/kg BW s.c.) and antibiotic therapy with imipenem-cilastatin (single dose of 14 mg/kg BW s.c.) are administered. The timing of the fluid and antibiotic therapy correspond to the initial care given when patients are admitted to the intensive care unit. This model of sepsis provides a useful platform for simulating human sepsis and could lay the groundwork for the development of new treatments.
Collapse
Affiliation(s)
- Jose Manuel Cóndor Capcha
- Laboratory of Basic Research, University of São Paulo School of Medicine, São Paulo, Brazil.,Laboratory of Genetics, Cellular Biology, and Molecular Biology, University of São Paulo School of Medicine, São Paulo, Brazil
| | | | - Camila E Rodrigues
- Laboratory of Basic Research, University of São Paulo School of Medicine, São Paulo, Brazil
| | - Marcelo A D Silveira
- Laboratory of Basic Research, University of São Paulo School of Medicine, São Paulo, Brazil
| | - Lucia Andrade
- Laboratory of Basic Research, University of São Paulo School of Medicine, São Paulo, Brazil
| | - Samirah A Gomes
- Laboratory of Genetics, Cellular Biology, and Molecular Biology, University of São Paulo School of Medicine, São Paulo, Brazil
| |
Collapse
|
25
|
Kumar A, Mandal A. Evaluation of animal models to explore the influence of maternal genetic and maternal permanent environment effect on reproductive performance of Jersey crossbred cattle. Reprod Domest Anim 2021; 56:511-518. [PMID: 33405243 DOI: 10.1111/rda.13889] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 11/06/2020] [Revised: 12/25/2020] [Accepted: 01/04/2021] [Indexed: 12/21/2022]
Abstract
The present study was conducted on 1,002 reproductive records of 430 Jersey crossbred cattle, descended from 57 sires and 198 dams, maintained at the Eastern Regional Station of ICAR-National Dairy Research Institute, Kalyani, Nadia, West Bengal, India to investigate the influence of direct genetic, maternal genetic and maternal permanent environmental effect on three most important reproductive traits viz., number of service per conception (NSPC), days open (DO) and calving interval (CI) of Jersey crossbred cattle. Six single-trait animal models (including or excluding maternal genetic or permanent environmental effects) were fitted to analyse these traits, and the best model was chosen after testing the significant increase in the log-likelihood values when additional parameters were added in the model. Direct heritability estimates for NSPC, DO and CI from the best model were 0.10, 0.14 and 0.20, respectively. The maternal permanent environmental (c2 ) effects on reproductive traits accounted for almost negligible fraction of the total phenotypic variance in this study. The maternal genetic effects (m2 ) also contributed very little (0%-3%) to the total phenotypic variance except for CI where it was important and accounted for 20% of phenotypic variance. A significantly large negative genetic correlation was observed between direct and maternal genetic effects for all traits, suggesting the presence of antagonistic relationship between dam's direct additive component and daughter's additive genetic component. Results suggest that both direct and maternal effects were important only for CI but not for other traits. Therefore, both direct additive effects and maternal genetic effect need to be considered for improving this trait by selection.
Collapse
Affiliation(s)
- Anshuman Kumar
- Eastern Regional Station, ICAR-National Dairy Research Institute, Kalyani, West Bengal, India.,Animal Genetics and Breeding Division, ICAR-National Dairy Research Institute, Karnal, Haryana, India
| | - Ajoy Mandal
- Eastern Regional Station, ICAR-National Dairy Research Institute, Kalyani, West Bengal, India
| |
Collapse
|
26
|
Gade IL, Schultz JG, Cehofski LJ, Kjaergaard B, Severinsen MT, Rasmussen BS, Vorum H, Honoré B, Kristensen SR. Exhaled breath condensate in acute pulmonary embolism; a porcine study of effect of condensing temperature and feasibility of protein analysis by mass spectrometry. J Breath Res 2020; 15. [PMID: 33321479 DOI: 10.1088/1752-7163/abd3f2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 09/03/2019] [Accepted: 12/15/2020] [Indexed: 12/16/2022]
Abstract
INTRODUCTION The search for diagnostic biomarkers for pulmonary embolism (PE) has mainly been focused on blood samples. Exhaled breath condensate (EBC) is a possible source for biomarkers specific for chronic lung diseases and cancer, yet no previous studies have investigated the potential of EBC for diagnosis of PE. The protein content in the EBC is very low, and efficient condensing of the EBC is important in order to obtain high quality samples for protein analysis. We investigated if advanced proteomic techniques in a porcine model of acute intermediate-high-risk PE was feasible using two different condensing temperatures for EBC collection. METHODS Seven pigs were anaesthetized and intubated. EBC was collected one hour after intubation. Two autologous emboli were induced through the right external jugular vein. Two hours after the emboli were administered, EBC was collected again. Condensing temperature was either -21 °C or -80 °C. Nano liquid chromatography - tandem mass spectrometry (nLC-MS/MS) was used to identify and quantify proteins of the EBC. RESULTS A condensing temperature of - 80 °C significantly increased the EBC volume compared with -21 °C (1.78±0.25 ml vs 0.71±0.12 ml) while the protein concentration in the EBC was unaltered. The mean protein concentration in the EBCs was 5.85±0.93 µg/ml, unaltered after PE. In total, 254 proteins were identified in the EBCs. Identified proteins included proteins of the cytoplasm, nucleus, plasma membrane and extracellular region. The protein composition did not differ according to condensing temperature. CONCLUSION The EBC from pigs with acute intermediate-high-risk PE contained sufficient amounts of protein for analysis by nLC-MS/MS. The proteins were from relevant cellular compartments, indicating that EBC is a possible source for biomarkers for acute PE.
Collapse
Affiliation(s)
- Inger Lise Gade
- Department of Clinical Biochemistry, Aalborg University Hospital, Hobrovej 18-22, Aalborg, 9000, DENMARK
| | | | | | - Benedict Kjaergaard
- Department of Cardiothoracic Surgery, Aalborg University Hospital, Aalborg, DENMARK
| | | | - Bodil Steen Rasmussen
- Department of Anesthesiology and Intensive Care, Aalborg University Hospital, Aalborg, DENMARK
| | - Henrik Vorum
- Department of Ophthalmology, Aalborg University Hospital, Aalborg, DENMARK
| | - Bent Honoré
- Department of Biomedicine, Aarhus University, Aarhus, DENMARK
| | | |
Collapse
|
27
|
Yang S, Mei B, Liu H, Li W, Wang CQ, Yang M, Yue Y, Wu ZK. A Modified Beagle Model of Inducible Atrial Fibrillation Using a Right Atrium Pacemaker. Braz J Cardiovasc Surg 2020; 35:713-721. [PMID: 33118737 PMCID: PMC7598959 DOI: 10.21470/1678-9741-2019-0363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Song Yang
- Sun Yat-sen University Cardiothoracic Surgery Intensive Care Unit Guangzhou People's Republic of China Cardiothoracic Surgery Intensive Care Unit of First Affiliated Hospital of Sun Yat-sen University, Guangzhou, People's Republic of China.,Ministry of Health Laboratory on Assisted Circulation Guangzhou People's Republic of China Key Laboratory on Assisted Circulation, Ministry of Health, Guangzhou, People's Republic of China
| | - Bo Mei
- Ministry of Health Laboratory on Assisted Circulation Guangzhou People's Republic of China Key Laboratory on Assisted Circulation, Ministry of Health, Guangzhou, People's Republic of China.,North Sicuan Medical College Department of Cardiovascular Surgery Nanchong Sicuan People's Republic of China Department of Cardiovascular Surgery, Affiliated Hospital of North Sicuan Medical College, Nanchong, Sicuan, People's Republic of China
| | - Hai Liu
- Zhengzhou University Cardiac Surgery Department of First Zhengzhou People's Republic of China Cardiac Surgery Department of First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China
| | - Wei Li
- Sun Yat-sen University First Affiliated Hospital Ultrasonics Department Guangzhou People's Republic of China Ultrasonics Department of First Affiliated Hospital of Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Chao-Qun Wang
- Sun Yat-sen University First Affiliated Hospital Cardiac Surgery Department Guangzhou People's Republic of China Second Cardiac Surgery Department of First Affiliated Hospital of Sun Yat-sen University, Guangzhou, People's Republic of China.,Ministry of Health Laboratory on Assisted Circulation Guangzhou People's Republic of China Key Laboratory on Assisted Circulation, Ministry of Health, Guangzhou, People's Republic of China
| | - Mei Yang
- Yuexiu Meihua Community Health Service Center Guangzhou People's Republic of China Yuexiu Meihua Community Health Service Center, Guangzhou, People's Republic of China
| | - Yuan Yue
- Sun Yat-sen University First Affiliated Hospital Cardiac Surgery Department Guangzhou People's Republic of China Second Cardiac Surgery Department of First Affiliated Hospital of Sun Yat-sen University, Guangzhou, People's Republic of China.,Ministry of Health Laboratory on Assisted Circulation Guangzhou People's Republic of China Key Laboratory on Assisted Circulation, Ministry of Health, Guangzhou, People's Republic of China
| | - Zhong-Kai Wu
- Sun Yat-sen University First Affiliated Hospital Cardiac Surgery Department Guangzhou People's Republic of China Second Cardiac Surgery Department of First Affiliated Hospital of Sun Yat-sen University, Guangzhou, People's Republic of China.,Ministry of Health Laboratory on Assisted Circulation Guangzhou People's Republic of China Key Laboratory on Assisted Circulation, Ministry of Health, Guangzhou, People's Republic of China
| |
Collapse
|
28
|
Doostkam A, Mirkhani H, Iravani K, Karbalay-Doust S, Zarei K. Effect of Rutin on Diabetic Auditory Neuropathy in an Experimental Rat Model. Clin Exp Otorhinolaryngol 2020; 14:259-267. [PMID: 32764214 PMCID: PMC8373845 DOI: 10.21053/ceo.2019.02068] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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: 12/18/2019] [Accepted: 05/05/2020] [Indexed: 01/03/2023] Open
Abstract
Objectives Diabetic auditory neuropathy is a common complication of diabetes mellitus that has a major impact on patients’ quality of life. In this study, we assessed the efficacy of rutin in treating diabetic auditory neuropathy in an experimental rat model. Methods Forty Sprague-Dawley rats were randomly assigned to the following groups: group 1, control; group 2, diabetic rats; and groups 3–5, rats treated with rutin (at doses of 50, 100, and 150 mg/kg, respectively). We used auditory brain stem response, stereology of the spiral ganglion, and measurements of superoxide dismutase (SOD) and malondialdehyde (MDA) to evaluate the effects of treatment. Results Significant improvements in auditory neuropathy were observed in the rutin-treated groups in comparison with the diabetic group (P<0.05). Auditory threshold, wave latency, wave morphology, the volume and number of neurons in the spiral ganglion, and SOD and MDA activity showed improvements following treatment. Conclusion Rutin shows promise as a treatment modality for diabetic auditory neuropathy, but more trials are warranted for its clinical application.
Collapse
Affiliation(s)
- Aida Doostkam
- Department of Pharmacology, School of Medicine, Shiraz Nephro-Urology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Hossein Mirkhani
- Department of Pharmacology, Medicinal and Natural Products Chemistry Research Center, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Kamyar Iravani
- Department of Otolaryngology, Otolaryngology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Saied Karbalay-Doust
- Department of Anatomy, Histomorphometry and Stereology Research Center, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Kazem Zarei
- Department of Otolaryngology, Otolaryngology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| |
Collapse
|
29
|
Weyne E, Ilg MM, Cakir OO, Muneer A, Roussel DB, Albersen M, Angulo J, Corona G, Bettocchi C, Reisman Y, Castiglione F. European Society for Sexual Medicine Consensus Statement on the Use of the Cavernous Nerve Injury Rodent Model to Study Postradical Prostatectomy Erectile Dysfunction. Sex Med 2020; 8:327-37. [PMID: 32674971 DOI: 10.1016/j.esxm.2020.06.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 05/16/2020] [Accepted: 06/14/2020] [Indexed: 01/24/2023] Open
Abstract
INTRODUCTION Rodent animal models are currently the most used in vivo model in translational studies looking into the pathophysiology of erectile dysfunction after nerve-sparing radical prostatectomy. AIM This European Society for Sexual Medicine (ESSM) statement aims to guide scientists toward utilization of the rodent model in an appropriate, timely, and proficient fashion. METHODS MEDLINE and EMBASE databases were searched for basic science studies, using a rodent animal model, looking into the consequence of pelvic nerve injury on erectile function. MAIN OUTCOME MEASURES The authors present a consensus on how to best perform experiments with this rodent model, the details of the technique, and highlight possible pitfalls. RESULTS Owing to the specific issue-basic science-Oxford 2011 Levels of Evidence criteria cannot be applied. However, ESSM statements on this topic will be provided in which we summarize the ESSM position on various aspects of the model such as the use of the Animal Research Reporting In Vivo Experiments guideline and the of common range parameter for nerve stimulation. We also highlighted the translational limits of the model. CONCLUSION The following statements were formulated as a suggestive guidance for scientists using the cavernous nerve injury model. With this, we hope to standardize and further improve the quality of research in this field. It must be noted that this model has its limitations. Weyne E, Ilg MM, Cakir OO, et al. European Society for Sexual Medicine Consensus Statement on the Use of the Cavernous Nerve Injury Rodent Model to Study Postradical Prostatectomy Erectile Dysfunction. Sex Med 2020;8:327-337.
Collapse
|
30
|
Lee KI, Bae JS, Kim EH, Kim JH, Lyu L, Chung YJ, Mo JH. Strain-Specific Differences in House Dust Mite (Dermatophagoides farinae)-Induced Mouse Models of Allergic Rhinitis. Clin Exp Otorhinolaryngol 2020; 13:396-406. [PMID: 32407614 PMCID: PMC7669312 DOI: 10.21053/ceo.2019.01837] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 11/12/2019] [Accepted: 02/10/2020] [Indexed: 01/13/2023] Open
Abstract
Objectives. Limited information is available regarding strain-related differences in mouse models of allergic rhinitis induced by Dermatophagoides farinae (Der f1). In this study, we compared differences between two mouse strains and determined the optimal dose of Der f1 for allergic rhinitis mouse models. Methods. Forty-eight mice were assigned to the following six groups (n=8 per group): group A (control, BALB/c), group B (Der f1-sensitized BALB/c, 25 µg), group C (Der f1-sensitized BALB/c, 100 µg), group D (control, C57BL/6), group E (Der f1-sensitized C57BL/6, 25 µg), and group F (Der f1-sensitized C57BL/6, 100 µg). Allergic inflammation was induced with Der f1 and alum sensitization, followed by an intranasal challenge with Der f1. Rubbing and sneezing scores, eosinophil and neutrophil infiltration, and immunoglobulin, cytokine, and chemokine levels in the nasal mucosa and from splenocyte cultures were assessed. Results. Rubbing and sneezing scores were higher in groups B, C, E, and F than in groups A and D, with a similar pattern in both strains (i.e., group B vs. E and group C vs. F). Serum immunoglobulin levels were significantly elevated compared to the control in groups B and C, but not in groups E and F. Eosinophil and neutrophil infiltration increased (all P<0.05) after the Der f1 challenge (groups B, C, E, and F) compared to the control (groups A and D) in both the BALB/c and C57BL/6 strains, without any significant difference between the two strains (group A vs. D, group B vs. E, and group C vs. F) (P>0.05). BALB/c mice (group B) showed a greater elevation of splenic interleukin (IL)-4 (P<0.01), IL-5 (P<0.01), and IL-6 levels (P<0.05) and nasal IL-4 mRNA levels (P<0.001) than the C57BL/6 mice (group E). Interestingly, mice treated with 100 µg Der f1 showed a weaker allergic response than those treated with 25 µg. Conclusion. We found 25 µg to be a more appropriate dose for Der f1 sensitization. BALB/c mice are more biased toward a Th2 response and are a more suitable model for allergic rhinitis than C57BL/6 mice. This study provides information on the appropriate choice of a mouse model for allergic rhinitis.
Collapse
Affiliation(s)
- Ki-Il Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Dankook University College of Medicine, Cheonan, Korea.,Department of Otorhinolaryngology-Head and Neck Surgery, Konyang University College of Medicine, Daejeon, Korea.,Beckman Laser Institute Korea, Dankook University College of Medicine, Cheonan, Korea
| | - Jun-Sang Bae
- Department of Otorhinolaryngology-Head and Neck Surgery, Dankook University College of Medicine, Cheonan, Korea.,Beckman Laser Institute Korea, Dankook University College of Medicine, Cheonan, Korea
| | - Eun Hee Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Dankook University College of Medicine, Cheonan, Korea.,Beckman Laser Institute Korea, Dankook University College of Medicine, Cheonan, Korea
| | - Ji Hye Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Dankook University College of Medicine, Cheonan, Korea.,Beckman Laser Institute Korea, Dankook University College of Medicine, Cheonan, Korea
| | - Lele Lyu
- Department of Otorhinolaryngology-Head and Neck Surgery, Dankook University College of Medicine, Cheonan, Korea.,Beckman Laser Institute Korea, Dankook University College of Medicine, Cheonan, Korea
| | - Young-Jun Chung
- Department of Otorhinolaryngology-Head and Neck Surgery, Dankook University College of Medicine, Cheonan, Korea
| | - Ji-Hun Mo
- Department of Otorhinolaryngology-Head and Neck Surgery, Dankook University College of Medicine, Cheonan, Korea.,Beckman Laser Institute Korea, Dankook University College of Medicine, Cheonan, Korea
| |
Collapse
|
31
|
Ullengala R, Prince LLL, Paswan C, Haunshi S, Chatterjee R. Variance component analysis of growth and production traits in Vanaraja male line chickens using animal model. Anim Biosci 2020; 34:471-481. [PMID: 32299171 PMCID: PMC7961281 DOI: 10.5713/ajas.19.0826] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 10/22/2019] [Accepted: 03/26/2020] [Indexed: 11/27/2022] Open
Abstract
Objective A comprehensive study was conducted to study the effects of partition of variance on accuracy of genetic parameters and genetic trends of economic traits in Vanaraja male line/project directorate-1 (PD-1) chicken. Methods Variance component analysis utilizing restricted maximum likelihood animal model was carried out with five generations data to delineate the population status, direct additive, maternal genetic, permanent environmental effects, besides genetic trends and performance of economic traits in PD-1 chickens. Genetic trend was estimated by regression of the estimated average breeding values (BV) on generations. Results The body weight (BW) and shank length (SL) varied significantly (p≤0.01) among the generations, hatches and sexes. The least squares mean of SL at six weeks, the primary trait was 77.44±0.05 mm. All the production traits, viz., BWs, age at sexual maturity, egg production (EP) and egg weight were significantly influenced by generation. Model four with additive, maternal permanent environmental and residual effects was the best model for juvenile growth traits, except for zero-day BW. The heritability estimates for BW and SL at six weeks (SL6) were 0.20±0.03 and 0.17±0.03, respectively. The BV of SL6 in the population increased linearly from 0.03 to 3.62 mm due to selection. Genetic trend was significant (p≤0.05) for SL6, BW6, and production traits. The average genetic gain of EP40 for each generation was significant (p≤0.05) with an average increase of 0.38 eggs per generation. The average inbreeding coefficient was 0.02 in PD-1 line. Conclusion The population was in ideal condition with negligible inbreeding and the selection was quite effective with significant genetic gains in each generation for primary trait of selection. The animal model minimized the over-estimation of genetic parameters and improved the accuracy of the BV, thus enabling the breeder to select the suitable breeding strategy for genetic improvement.
Collapse
Affiliation(s)
- Rajkumar Ullengala
- ICAR-Directorate of Poultry Research, Rajendranagar, Hyderabad 500030, Telangana, India
| | - L Leslie Leo Prince
- ICAR-Directorate of Poultry Research, Rajendranagar, Hyderabad 500030, Telangana, India
| | - Chandan Paswan
- ICAR-Directorate of Poultry Research, Rajendranagar, Hyderabad 500030, Telangana, India
| | - Santosh Haunshi
- ICAR-Directorate of Poultry Research, Rajendranagar, Hyderabad 500030, Telangana, India
| | - Rudranath Chatterjee
- ICAR-Directorate of Poultry Research, Rajendranagar, Hyderabad 500030, Telangana, India
| |
Collapse
|
32
|
Jardine S, Anderson S, Babcock S, Leung G, Pan J, Dhingani N, Warner N, Guo C, Siddiqui I, Kotlarz D, Dowling JJ, Melnyk R, Snapper SB, Klein C, Thiagarajah JR, Muise AM. Drug Screen Identifies Leflunomide for Treatment of Inflammatory Bowel Disease Caused by TTC7A Deficiency. Gastroenterology 2020; 158:1000-1015. [PMID: 31743734 PMCID: PMC7062591 DOI: 10.1053/j.gastro.2019.11.019] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [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: 06/21/2019] [Revised: 11/03/2019] [Accepted: 11/05/2019] [Indexed: 01/12/2023]
Abstract
BACKGROUND & AIMS Mutations in the tetratricopeptide repeat domain 7A gene (TTC7A) cause intestinal epithelial and immune defects. Patients can become immune deficient and develop apoptotic enterocolitis, multiple intestinal atresia, and recurrent intestinal stenosis. The intestinal disease in patients with TTC7A deficiency is severe and untreatable, and it recurs despite resection or allogeneic hematopoietic stem cell transplant. We screened drugs for those that prevent apoptosis of in cells with TTC7A deficiency and tested their effects in an animal model of the disease. METHODS We developed a high-throughput screen to identify compounds approved by the US Food and Drug Administration that reduce activity of caspases 3 and 7 in TTC7A-knockout (TTC7A-KO) HAP1 (human haploid) cells and reduce the susceptibility to apoptosis. We validated the effects of identified agents in HeLa cells that stably express TTC7A with point mutations found in patients. Signaling pathways in cells were analyzed by immunoblots. We tested the effects of identified agents in zebrafish with disruption of ttc7a, which develop intestinal defects, and colonoids derived from biopsy samples of patients with and without mutations in TTC7A. We performed real-time imaging of intestinal peristalsis in zebrafish and histologic analyses of intestinal tissues from patients and zebrafish. Colonoids were analyzed by immunofluorescence and for ion transport. RESULTS TTC7A-KO HAP1 cells have abnormal morphology and undergo apoptosis, due to increased levels of active caspases 3 and 7. We identified drugs that increased cell viability; leflunomide (used to treat patients with inflammatory conditions) reduced caspase 3 and 7 activity in cells by 96%. TTC7A-KO cells contained cleaved caspase 3 and had reduced levels of phosphorylated AKT and X-linked inhibitor of apoptosis (XIAP); incubation of these cells with leflunomide increased levels of phosphorylated AKT and XIAP and reduced levels of cleaved caspase 3. Administration of leflunomide to ttc7a-/- zebrafish increased gut motility, reduced intestinal tract narrowing, increased intestinal cell survival, increased sizes of intestinal luminal spaces, and restored villi and goblet cell morphology. Exposure of patient-derived colonoids to leflunomide increased cell survival, polarity, and transport function. CONCLUSIONS In a drug screen, we identified leflunomide as an agent that reduces apoptosis and activates AKT signaling in TTC7A-KO cells. In zebrafish with disruption of ttc7a, leflunomide restores gut motility, reduces intestinal tract narrowing, and increases intestinal cell survival. This drug might be repurposed for treatment of TTC7A deficiency.
Collapse
Affiliation(s)
- Sasha Jardine
- SickKids Inflammatory Bowel Disease Center, The Hospital for Sick Children, Toronto, ON, Canada
| | - Sierra Anderson
- Division of Gastroenterology, Hepatology and Nutrition, Boston Children’s Hospital, Boston, MA, USA, Harvard Medical School, Boston, MA, USA
| | - Stephen Babcock
- Division of Gastroenterology, Hepatology and Nutrition, Boston Children’s Hospital, Boston, MA, USA, Harvard Medical School, Boston, MA, USA
| | - Gabriella Leung
- SickKids Inflammatory Bowel Disease Center, The Hospital for Sick Children, Toronto, ON, Canada
| | - Jie Pan
- SickKids Inflammatory Bowel Disease Center, The Hospital for Sick Children, Toronto, ON, Canada
| | - Neel Dhingani
- SickKids Inflammatory Bowel Disease Center, The Hospital for Sick Children, Toronto, ON, Canada
| | - Neil Warner
- SickKids Inflammatory Bowel Disease Center, The Hospital for Sick Children, Toronto, ON, Canada
| | - Conghui Guo
- SickKids Inflammatory Bowel Disease Center, The Hospital for Sick Children, Toronto, ON, Canada
| | - Iram Siddiqui
- Division of Pathology, The Hospital for Sick Children, Toronto, ON, Canada
| | - Daniel Kotlarz
- Dr. von Hauner Children’s Hospital, Department of Pediatrics, University Hospital, LMU Munich, Munich, Germany
| | - James J Dowling
- Division of Neurology, and Genetics and Genome Biology Program, Research Institute, The Hospital for Sick Children,Molecular Medicine Program, Research Institute, The Hospital for Sick Children, Toronto, ON, Canada
| | - Roman Melnyk
- Molecular Medicine Program, Research Institute, The Hospital for Sick Children, Toronto, ON, Canada
| | - Scott B Snapper
- Division of Gastroenterology, Hepatology and Nutrition, Boston Children’s Hospital, Boston, MA, USA, Harvard Medical School, Boston, MA, USA,Division of Gastroenterology, Brigham and Women’s Hospital, Boston, MA, USA
| | - Christoph Klein
- Dr. von Hauner Children’s Hospital, Department of Pediatrics, University Hospital, LMU Munich, Munich, Germany
| | - Jay R Thiagarajah
- Division of Gastroenterology, Hepatology and Nutrition, Boston Children’s Hospital, Boston, MA, USA, Harvard Medical School, Boston, MA, USA
| | - Aleixo M Muise
- SickKids Inflammatory Bowel Disease Centre, The Hospital for Sick Children, Toronto, Ontario, Canada; Cell Biology Program, Research Institute, The Hospital for Sick Children, Toronto, Ontario, Canada; Department of Pediatrics, Institute of Medical Science and Biochemistry, University of Toronto, The Hospital for Sick Children, Toronto, Ontario, Canada.
| |
Collapse
|
33
|
Abstract
PURPOSE OF REVIEW This article aimed to review animal models of antifungals and identifies human literature to assess if the extrapolation of results is reliable. RECENT FINDINGS Animal studies have helped identify AUC/MIC targets for new drugs and formulations such as isavuconazole and delayed release posaconazole that have translated to successful outcomes in humans. Models have also been influential in the identification of possible combination therapies for the treatment of aspergillosis, such as voriconazole and echinocandins. However, challenges are endured with animal models when it comes to replicating the pharmacokinetics of humans which has been exemplified with the newest itraconazole formulation. Additionally, animal models have displayed a survival benefit with the use of iron chelators and amphotericin for mucormycosis which was not demonstrated in humans. SUMMARY Animal models have been a staple in the development and optimization of antifungal agents. They afford the ability to investigate uncommon diseases, such as invasive fungal infections, that would otherwise take years and many resources to complete. Although there are many benefits of animal models there are also shortcomings. This is why the reliability of extrapolating data from animal models to humans is often scrutinized.
Collapse
Affiliation(s)
- Victoria M Stevens
- Department of Clinical Pharmacy, University of Colorado Skaggs School of Pharmacy and Pharmaceutical Sciences, 12850 East Montview Boulevard, Mail Stop C238, Aurora, CO 80045, USA
| | - Scott W Mueller
- Department of Clinical Pharmacy, University of Colorado Skaggs School of Pharmacy and Pharmaceutical Sciences, 12850 East Montview Boulevard, Mail Stop C238, Aurora, CO 80045, USA
| | - Paul M Reynolds
- Department of Clinical Pharmacy, University of Colorado Skaggs School of Pharmacy and Pharmaceutical Sciences, 12850 East Montview Boulevard, Mail Stop C238, Aurora, CO 80045, USA
| | - Robert MacLaren
- Department of Clinical Pharmacy, University of Colorado Skaggs School of Pharmacy and Pharmaceutical Sciences, 12850 East Montview Boulevard, Mail Stop C238, Aurora, CO 80045, USA
| | - Tyree H Kiser
- Department of Clinical Pharmacy, University of Colorado Skaggs School of Pharmacy and Pharmaceutical Sciences, 12850 East Montview Boulevard, Mail Stop C238, Aurora, CO 80045, USA
| |
Collapse
|
34
|
Huang H, Swidnicka-Siergiejko AK, Daniluk J, Gaiser S, Yao Y, Peng L, Zhang Y, Liu Y, Dong M, Zhan X, Wang H, Bi Y, Li Z, Ji B, Logsdon CD. Transgenic Expression of PRSS1 R122H Sensitizes Mice to Pancreatitis. Gastroenterology 2020; 158:1072-1082.e7. [PMID: 31419436 PMCID: PMC7580257 DOI: 10.1053/j.gastro.2019.08.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [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: 10/25/2018] [Revised: 07/19/2019] [Accepted: 08/05/2019] [Indexed: 12/12/2022]
Abstract
BACKGROUND & AIMS Mutations in the trypsinogen gene (PRSS1) cause human hereditary pancreatitis. However, it is not clear how mutant forms of PRSS1 contribute to disease development. We studied the effects of expressing mutant forms of human PRSS1 in mice. METHODS We expressed forms of PRSS1 with and without the mutation encoding R122H (PRSS1R122H) specifically in pancreatic acinar cells under control of a full-length pancreatic elastase gene promoter. Mice that did not express these transgenes were used as controls. Mice were given injections of caerulein to induce acute pancreatitis or injections of lipopolysaccharide to induce chronic pancreatitis. Other groups of mice were fed ethanol or placed on a high-fat diet to induce pancreatitis. Pancreata were collected and analyzed by histology, immunoblots, real-time polymerase chain reaction, and immunohistochemistry. Trypsin enzymatic activity and chymotrypsin enzymatic activity were measured in pancreatic homogenates. Blood was collected and serum amylase activity was measured. RESULTS Pancreata from mice expressing transgenes encoding PRSS1 or PRSS1R122H had focal areas of inflammation; these lesions were more prominent in mice that express PRSS1R122H. Pancreata from mice that express PRSS1 or PRSS1R122H had increased levels of heat shock protein 70 and nuclear factor (erythroid-derived 2)-like 2, and reduced levels of chymotrypsin C compared with control mice. Increased expression of PRSS1 or PRSS1R122H increased focal damage in pancreatic tissues and increased the severity of acute pancreatitis after caerulein injection. Administration of lipopolysaccharide exacerbated inflammation in mice that express PRSS1R122H compared to mice that express PRSS1 or control mice. Mice that express PRSS1R122H developed more severe pancreatitis after ethanol feeding or a high-fat diet than mice that express PRSS1 or control mice. Pancreata from mice that express PRSS1R122H had more DNA damage, apoptosis, and collagen deposition and increased trypsin activity and infiltration by inflammatory cells than mice that express PRSS1 or control mice. CONCLUSIONS Expression of a transgene encoding PRSS1R122H in mice promoted inflammation and increased the severity of pancreatitis compared with mice that express PRSS1 or control mice. These mice might be used as a model for human hereditary pancreatitis and can be studied to determine mechanisms of induction of pancreatitis by lipopolysaccharide, ethanol, or a high-fat diet.
Collapse
Affiliation(s)
- Haojie Huang
- Department of Cancer Biology, University of Texas M.D. Anderson Cancer Center, Houston, TX,Department of Gastroenterology, Changhai Hospital, Second Military Medical University, Shanghai, People’s Republic of China
| | - Agnieszka Katarzyna Swidnicka-Siergiejko
- Department of Cancer Biology, University of Texas M.D. Anderson Cancer Center, Houston, TX,Department of Gastroenterology, Medical University of Bialystok, Bialystok, Poland
| | - Jaroslaw Daniluk
- Department of Cancer Biology, University of Texas M.D. Anderson Cancer Center, Houston, TX,Department of Gastroenterology, Medical University of Bialystok, Bialystok, Poland
| | - Sebastian Gaiser
- Department of Cancer Biology, University of Texas M.D. Anderson Cancer Center, Houston, TX
| | - Yao Yao
- Department of Gastroenterology, Changhai Hospital, Second Military Medical University, Shanghai, People’s Republic of China
| | - Lisi Peng
- Department of Gastroenterology, Changhai Hospital, Second Military Medical University, Shanghai, People’s Republic of China
| | - Yang Zhang
- Department of Cancer Biology, University of Texas M.D. Anderson Cancer Center, Houston, TX,Department of Gastroenterology, Changhai Hospital, Second Military Medical University, Shanghai, People’s Republic of China
| | - Yan Liu
- Department of Cancer Biology, University of Texas M.D. Anderson Cancer Center, Houston, TX
| | - Minyu Dong
- Department of Gastroenterology, Guangzhou Medical University, Guangzhou, China,Department of Cancer Biology, Mayo Clinic, Jacksonville, FL
| | - Xianbao Zhan
- Department of Oncology, Changhai Hospital, Second Military Medical University, Shanghai, People’s Republic of China,Department of Cancer Biology, Mayo Clinic, Jacksonville, FL
| | - Huamin Wang
- Department of Pathology, the University of Texas M.D. Anderson Cancer Center, Houston, TX
| | - Yan Bi
- Department of Gastroenterology, Mayo Clinic, Jacksonville, FL
| | - Zhaoshen Li
- Department of Gastroenterology, Changhai Hospital, Second Military Medical University, Shanghai, People’s Republic of China
| | - Baoan Ji
- Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida.
| | - Craig D. Logsdon
- Department of Cancer Biology, University of Texas M.D. Anderson Cancer Center, Houston, TX
| |
Collapse
|
35
|
Chen F, Nagy K, Chavez D, Willis S, McBride R, Giang E, Honda A, Bukh J, Ordoukhanian P, Zhu J, Frey S, Lanford R, Law M. Antibody Responses to Immunization With HCV Envelope Glycoproteins as a Baseline for B-Cell-Based Vaccine Development. Gastroenterology 2020; 158:1058-1071.e6. [PMID: 31809725 PMCID: PMC7371413 DOI: 10.1053/j.gastro.2019.11.282] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [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: 08/12/2019] [Revised: 11/11/2019] [Accepted: 11/12/2019] [Indexed: 12/12/2022]
Abstract
BACKGROUND & AIMS We investigated antibody responses to hepatitis C virus (HCV) antigens E1 and E2 and the relevance of animal models for vaccine development. We compared antibody responses to vaccination with recombinant E1E2 complex in healthy volunteers, non-human primates (NHPs), and mice. METHODS We analyzed 519 serum samples from participants in a phase 1 vaccine trial (ClinicalTrials.gov identifier NCT00500747) and compared them with serum or plasma samples from C57BL/6J mice (n = 28) and rhesus macaques (n = 4) immunized with the same HCV E1E2 antigen. Blood samples were collected at different time points and analyzed for antibody binding, neutralizing activity, and epitope specificity. Monoclonal antibodies from the immunized NHPs were isolated from single plasmablasts and memory B cells, and their immunogenetic properties were characterized. RESULTS Antibody responses of the volunteers, NHPs, and mice to the non-neutralizing epitopes on the E1 N-terminus and E2 hypervariable region 1 did not differ significantly. Antibodies from volunteers and NHPs that neutralized heterologous strains of HCV primarily interacted with epitopes in the antigen region 3. However, the neutralizing antibodies were not produced in sufficient levels for broad neutralization of diverse HCV isolates. Broadly neutralizing antibodies similar to the human VH1-69 class antibody specific for antigen region 3 were produced in the immunized NHPs. CONCLUSIONS In an analysis of vaccinated volunteers, NHPs, and mice, we found that recombinant E1E2 vaccine antigen induces high-antibody titers that are insufficient to neutralize diverse HCV isolates. Antibodies from volunteers and NHPs bind to the same neutralizing epitopes for virus neutralization. NHPs can therefore be used as a preclinical model to develop HCV vaccines. These findings also provide useful baseline values for development of vaccines designed to induce production of neutralizing antibodies.
Collapse
Affiliation(s)
- Fang Chen
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California, USA
| | - Kenna Nagy
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California, USA
| | - Deborah Chavez
- Southwest National Primate Research Center at Texas Biomedical Research Institute, San Antonio, Texas, USA
| | - Shelby Willis
- NGS and Microarray Research Cores, The Scripps Research Institute, La Jolla, California, USA
| | - Ryan McBride
- NGS and Microarray Research Cores, The Scripps Research Institute, La Jolla, California, USA
| | - Erick Giang
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California, USA
| | - Andrew Honda
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California, USA
| | - Jens Bukh
- Copenhagen Hepatitis C Program (CO-HEP), Department of Infectious Diseases, Hvidovre Hospital, and Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - Phillip Ordoukhanian
- NGS and Microarray Research Cores, The Scripps Research Institute, La Jolla, California, USA
| | - Jiang Zhu
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California, USA
| | - Sharon Frey
- Saint Louis University Center for Vaccine Development, St. Louis, Missouri, USA
| | - Robert Lanford
- Southwest National Primate Research Center at Texas Biomedical Research Institute, San Antonio, Texas, USA
| | - Mansun Law
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California.
| |
Collapse
|
36
|
Jafari M, Naeini KM, Lorigooini Z, Namjoo R. Oral acute and sub-acute toxic effects of hydroalcoholic Terminalia chebula Retz and Achillea wilhelmsii extracts in BALB/c mice. Biomedicine (Taipei) 2019; 9:25. [PMID: 31750830 PMCID: PMC6870277 DOI: 10.1051/bmdcn/2019090425] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 07/08/2019] [Accepted: 07/22/2019] [Indexed: 11/15/2022] Open
Abstract
Background: This study examined the acute and sub-acute toxic effects of Terminalia chebula and Achillea wilhelmsii extracts on the murine model. Methods: In both phases, mice were assigned to intervention and control groups. At the end of study, the liver, kidney, and heart tissues were collected for histopathological studies. Results: In the acute phase of the study, the safe dose was ≤5000 mg/kg for both extracts. In sub-acute phase, LD50 (95% CI) of Achillea wilhelmsii extract was determined ≥5000 mg/kg and that of Terminalia chebula extract 2754.436 (2438-3114) mg/kg. The highest dose of T. chebula extract induced few histopathological changes. Conclusion: It will be useful to gain information on the minimum lethal doses of T. chebula and A. wilhelmsii to adopt safe doses of the two plants.
Collapse
Affiliation(s)
- Mahnaz Jafari
- Medical Plants Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Kourosh Manochehri Naeini
- Medical Plants Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Zahra Lorigooini
- Medical Plants Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Rasool Namjoo
- Department of Pathology, School of Veterinary Medicine, Islamic Azad University, Shahrekord, Iran
| |
Collapse
|
37
|
Wagner MC, Cavagni J, Gaio EJ, Brum VS, Jesus LH, Filho MS, Carrard VC, Dorneles GP, Peres A, Rösing CK. Effect of red wine and its major components on periodontitis and systemic inflammation in rats. J Int Acad Periodontol 2019; 21:139-147. [PMID: 31694984] [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] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
OBJECTIVES To evaluate the influence of red wine exposure, alcohol, grape juice and resveratrol in the occurrence of spontaneous and ligature induced periodontitis as well as CRP, TNFα and IL-6 levels in Wistar rats. METHODOLOGY 50 male Wistar rats were randomly assigned to 5 groups (Control, Red Wine, Grape Juice, 12% Alcohol and 0.05mg/mL Resveratrol). All groups were fed with laboratory rat chow and liquid intake according to group allocation. After 8 weeks, ligatures were placed around the maxillary right second molars. The contra-lateral molars remained as intra-group controls. After 14 days, animals were killed, blood samples collected and specimens prepared for analysis. Group comparisons were performed by ANOVA. A cut-off point in the 75th percentile in the side without ligature was used for definition of spontaneous periodontitis. RESULTS All animals completed the experiment. According to mean alveolar bone loss, no statistically significant differences were found. Animals exposed to red wine presented a lower occurrence of spontaneous periodontitis, lower levels of TNF-α (0.97 ng/mL) and CRP (0.29 mmol/μL) compared to controls (1.97 ng/mL, p = 0.008 and 0.45 mmol/ μL, p less than or equal to 0.05 respectively). CONCLUSION Red wine exposure potentially affects the occurrence of spontaneous periodontitis, CRP and TNF-α levels in Wistar rats.
Collapse
Affiliation(s)
- Marcius C Wagner
- Department of Periodontology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
| | - Juliano Cavagni
- Department of Periodontology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Eduardo J Gaio
- Department of Periodontology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Vanessa S Brum
- Department of Periodontology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Luciano H Jesus
- Department of Oral Pathology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Manoel Sant'Ana Filho
- Department of Oral Pathology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Vinicius C Carrard
- Department of Oral Pathology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Gilson P Dorneles
- Department of Basic Health Sciences, Universidade Federal de Ciências da Saúde de Porto Alegre, Brazil
| | - Alessandra Peres
- Department of Basic Health Sciences, Universidade Federal de Ciências da Saúde de Porto Alegre, Brazil
| | - Cassiano K Rösing
- 1Department of Periodontology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| |
Collapse
|
38
|
Cao Z, Zhang T, Xu C, Jia Y, Wang T, Zhu B. AIN-93 Diet as an Alternative Model to Lieber-DeCarli Diet for Alcoholic Cardiomyopathy. Alcohol Clin Exp Res 2019; 43:1452-1461. [PMID: 31034614 DOI: 10.1111/acer.14069] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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: 01/11/2019] [Accepted: 04/23/2019] [Indexed: 11/29/2022]
Abstract
BACKGROUND The Lieber-DeCarli alcoholic liquid diet is a classical method for establishing animal models of alcoholic cardiomyopathy (ACM). No study has reported whether the AIN-93 diet, which is widely used as a standard diet for both long-term and short-term studies with laboratory animals, could be used to construct the ACM animal model. The present study intended to investigate whether the AIN-93 diet could be used to establish a mouse ACM model. METHODS Twenty-four C57BL/6 male mice were randomly divided into 4 equally sized groups. In ethanol (EtOH)-fed groups, mice were fed a 4%-EtOH (w/v, 28% of total calories) alcoholic liquid diet of Lieber-DeCarli or the AIN-93 diet for chronic alcohol exposure for 180 days. In control-fed groups, mice were fed with non-EtOH liquid diets with the same calories as EtOH-fed groups. Morphological observations of the hearts and molecular investigation of the brain natriuretic peptide (BNP) were carried out by echocardiography, hematoxylin and eosin (H&E) and immunohistochemistry (IHC) staining, real-time quantitative polymerase chain reaction (qPCR), and enzyme-linked immunosorbent assay. RESULTS Echocardiography showed that mice fed with either the 4%-EtOH Lieber-DeCarli diet or the 4%-EtOH AIN-93 diet had dilated ventricles and poor cardiac function. IHC staining of BNP, qPCR of BNP mRNA, and plasma concentration of BNP showed an up-regulated expression in mice fed with both the 4%-EtOH Lieber-DeCarli and 4%-EtOH AIN-93 diets. Less fatty liver was also observed in mice fed the AIN-93 alcoholic diet than those fed the Lieber-DeCarli alcoholic diet. CONCLUSIONS The AIN-93 alcoholic liquid diet can be used to establish ACM animal models, as with the conventional Lieber-DeCarli alcoholic liquid diet.
Collapse
Affiliation(s)
- Zhipeng Cao
- Department of Forensic Pathology, School of Forensic Medicine, China Medical University, Shenyang, China
| | - Tianyi Zhang
- Department of Forensic Pathology, School of Forensic Medicine, China Medical University, Shenyang, China
| | - Chengyang Xu
- The third clinical department of China Medical University, Shenyang, China
| | - Yuqing Jia
- Department of Forensic Pathology, School of Forensic Medicine, China Medical University, Shenyang, China
| | - Tianqi Wang
- Department of Forensic Pathology, School of Forensic Medicine, China Medical University, Shenyang, China
| | - Baoli Zhu
- Department of Forensic Pathology, School of Forensic Medicine, China Medical University, Shenyang, China
| |
Collapse
|
39
|
Getachew B, Reyes RE, Davies DL, Tizabi Y. Moxidectin Effects on Gut Microbiota of Wistar-Kyoto Rats: Relevance to Depressive-Like Behavior. Clin Pharmacol Transl Med 2019; 3:134-142. [PMID: 31321385 PMCID: PMC6639013] [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] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
BACKGROUND/AIMS The prevalent comorbidity between neuropsychiatric and gastrointestinal (GI) disorders is believed to be significantly influenced by gut microbiota (GM). GM may also play a substantial role in comorbidity between substance abuse (e.g. Alcohol Use Disorder, AUD) and depression. The anti-parasitic drug Moxidectin (MOX) has been reported to reduce alcohol intake in male and female mice. This effect is purported to be centrally mediated with a significant contribution linked to purinergic, P2X4 purinergic receptors. However, MOX's effects on GM in animal models of depression is not known. METHODS Adult male Wistar Kyoto (WKY) rats (5/group) were injected intraperitoneally (i.p.) once daily for 7 days with MOX (2.5mg/kg), or saline as control group. On day 8, approximately 20 h after the last MOX injection, animals were sacrificed, intestinal stools were collected and stored at -80°C DNA was extracted from the samples for 16S rRNA gene-based GM analysis using 16S Metagenomics application. RESULTS At taxa and species level, MOX affected a number of bacteria including a 30-fold increase in Bifidobacterium cholerium, a bacterium with a strong ability to degrade carbohydrates that resist digestion in the small intestine. There was a minimum of 2-fold increase in: five probiotic species of Lactobacillus, butyrate-forming Rosburia Facies and Butyrivibro proteovlasticus. In contrast, MOX depleted 11 species, including 2 species of Ruminoccus, which are positively associated with severity of irritable bowel syndrome, and 4 species of Provettela, which are closely associated with depressive-like behavior. CONCLUSION Thus, MOX enhanced probiotic species, and suppressed the opportunistic pathogens. Since overall effect of MOX appears to be promoting GM associated with mood enhancement (e.g. Bifidobacterium and Lactobacillus) and suppressing GM associated with inflammation (e.g. Ruminoccus), potential antidepressant and anti-inflammatory effects of MOX in suitable animal models should be investigated.
Collapse
Affiliation(s)
- Bruk Getachew
- Department of Pharmacology, Howard University College of Medicine, Washington, DC, USA
| | - Rachel E. Reyes
- Titus Family Department of Clinical Pharmacy, School of Pharmacy, University of Southern California, Los Angeles, CA, USA
| | - Daryl L. Davies
- Titus Family Department of Clinical Pharmacy, School of Pharmacy, University of Southern California, Los Angeles, CA, USA
| | - Yousef Tizabi
- Department of Pharmacology, Howard University College of Medicine, Washington, DC, USA
| |
Collapse
|
40
|
Nazeri M, Zarei MR, Pourzare AR, Ghahreh-Chahi HR, Abareghi F, Shabani M. Evidence of Altered Trigeminal Nociception in an Animal Model of Fibromyalgia. Pain Med 2019; 19:328-335. [PMID: 28505350 DOI: 10.1093/pm/pnx114] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Objective Fibromyalgia (FM) is a debilitating chronic condition that significantly affects quality of life. A strong association has been demonstrated between FM and chronic pain in the trigeminal region in clinical studies. This study was performed to evaluate the response to acute and chronic noxious stimuli applied to the facial region. Methods Adult male Wistar rats (250-270 g, N = 10 for each group) were used in the current study. A subchronic swim stress model was used as the animal model of FM. Anxiety-like behaviors and response to acute and chronic noxious stimuli were assayed using the elevated plus maze, eye wiping test, and orofacial formalin test, respectively. Balance and motor function were evaluated using rotarod and wire grip tests. Results An increased anxiety-like behavior was observed in swim stress rats in comparison with control and sham subjects. Response to acute and chronic noxious stimuli in the trigeminal region was increased in the stressed rats. Motor and balance function were not altered following stress. Conclusions Results of the current study demonstrated a hyperalgesic state in the trigeminal region in a possible animal model of FM. This study provides a reliable animal model for further research on the possible mechanisms of orofacial pain in FM.
Collapse
Affiliation(s)
| | | | | | | | | | - Mohammad Shabani
- Neurophysiology and Patch Clamp Laboratory, Neuroscience Research Center, Kerman University of Medical Sciences, Kerman, Iran
| |
Collapse
|
41
|
de Oliveira C, Khatua B, Bag A, El-Kurdi B, Patel K, Mishra V, Navina S, Singh VP. Multimodal Transgastric Local Pancreatic Hypothermia Reduces Severity of Acute Pancreatitis in Rats and Increases Survival. Gastroenterology 2019; 156:735-747.e10. [PMID: 30518512 PMCID: PMC6368865 DOI: 10.1053/j.gastro.2018.10.034] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [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: 08/13/2018] [Revised: 10/11/2018] [Accepted: 10/20/2018] [Indexed: 12/16/2022]
Abstract
BACKGROUND & AIMS Acute pancreatitis (AP) of different etiologies is associated with the activation of different signaling pathways in pancreatic cells, posing challenges to the development of targeted therapies. We investigated whether local pancreatic hypothermia, without systemic hypothermia, could lessen the severity of AP induced by different methods in rats. METHODS A urethane balloon with 2 polyurethane tubes was placed inside the stomach of rats. AP was induced in Wistar rats by the administration of cerulein or glyceryl tri-linoleate (GTL). Then, cold water was infused into the balloon to cool the pancreas. Pancreatic temperatures were selected based on those found to decrease acinar cell injury. An un-perfused balloon was used as a control. Pancreatic and rectal temperatures were monitored, and an infrared lamp or heating pad was used to avoid generalized hypothermia. We collected blood, pancreas, kidney, and lung tissues and analyzed them by histology, immunofluorescence, immunoblot, cytokine and chemokine magnetic bead, and DNA damage assays. The effect of hypothermia on signaling pathways initiated by cerulein and GTL was studied in acinar cells. RESULTS Rats with pancreatic cooling developed less severe GTL-induced AP compared with rats that received the control balloon. In acinar cells, cooling decreased the lipolysis induced by GTL, increased the micellar form of its fatty acid, lowered the increase in cytosolic calcium, prevented the loss of mitochondrial membrane potential (by 70%-80%), and resulted in a 40%-50% decrease in the uptake of a fatty acid tracer. In rats with AP, cooling decreased pancreatic necrosis by 48%, decreased serum levels of cytokines and markers of cell damage, and decreased markers of lung and renal damage. Pancreatic cooling increased the proportions of rats surviving 6 hours after induction of AP (to 90%, from <10% of rats that received the control balloon). In rats with cerulein-induced AP, pancreatic cooling decreased pancreatic markers of apoptosis and inflammation. CONCLUSIONS In rats with AP, transgastric local pancreatic hypothermia decreases pancreatic necrosis, apoptosis, inflammation, and markers of pancreatitis severity and increases survival.
Collapse
Affiliation(s)
- Cristiane de Oliveira
- Department of Medicine, Mayo Clinic, Scottsdale, AZ, University of Pittsburgh, Pittsburgh, PA
| | - Biswajit Khatua
- Department of Medicine, Mayo Clinic, Scottsdale, AZ, University of Pittsburgh, Pittsburgh, PA
| | - Arup Bag
- Department of Medicine, Mayo Clinic, Scottsdale, AZ, University of Pittsburgh, Pittsburgh, PA
| | - Bara El-Kurdi
- Department of Medicine, Mayo Clinic, Scottsdale, AZ, University of Pittsburgh, Pittsburgh, PA
| | - Krutika Patel
- Department of Medicine, Mayo Clinic, Scottsdale, AZ, University of Pittsburgh, Pittsburgh, PA
| | - Vivek Mishra
- Department of Medicine, University of Pittsburgh, Pittsburgh, PA
| | - Sarah Navina
- Pathology, University of Pittsburgh, Pittsburgh, PA
| | - Vijay P. Singh
- Department of Medicine, Mayo Clinic, Scottsdale, AZ, University of Pittsburgh, Pittsburgh, PA
| |
Collapse
|
42
|
Chae YJ, Jun DW, Saeed WK, Kang HT, Oh JH, Lee SM, Jang K. Feasibility and Stability of Liver Biopsy before Treatment for Preclinical Nonalcoholic Fatty Liver Studies. J Korean Med Sci 2019; 34:e14. [PMID: 30636945 PMCID: PMC6327092 DOI: 10.3346/jkms.2019.34.e14] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 10/22/2018] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND The heterogeneity of histological findings in preclinical diet-induced nonalcoholic fatty liver disease (NAFLD) animal models is highly challenging. Here, we aimed to evaluate the feasibility and stability of repeated liver biopsy in NAFLD animal models. METHODS Heterogeneity of diet-induced NAFLD was evaluated at different time points in 52 high-fat diet (HFD), 35 methionine choline-deficiency diet (MCD), and 166 western diet (WD) induced NAFLD mice. Serial liver biopsies (left lateral, right medial, and left medial lobes) were performed monthly for up to 3 months. Mortality rates and changes in food intake, body weight, and liver enzymes were assessed. RESULTS At 12 weeks, of the HFD animals, 14% and 30% did not develop steatosis and lobular inflammation, respectively; of the MCD animals, 7% did not develop lobular inflammation; and of the WD animals, 14% and 51% did not develop steatosis and lobular inflammation, respectively. The mortality rate of repeated liver biopsy was 1.62% (2/123 mice died). Repeated liver biopsy can be used to trace disease progression. Although body weight, food intake, and liver enzymes slightly changed after biopsy, all recovered within a week. Repeated liver biopsy did not affect the degrees of inflammation and steatosis of the other liver lobes. CONCLUSION The diet-induced NAFLD models were quite heterogeneous. Our results suggest that the repeated liver biopsy before treatment was applicable and stable in this NAFLD animal study.
Collapse
Affiliation(s)
- Yeon Ji Chae
- Department Translational Medicine, Hanyang University Graduate School of Biomedical Science and Engineering, Seoul, Korea
| | - Dae Won Jun
- Department Translational Medicine, Hanyang University Graduate School of Biomedical Science and Engineering, Seoul, Korea
- Department of Internal Medicine, College of Medicine, Hanyang University, Seoul, Korea
| | - Waqar Khalid Saeed
- Department of Internal Medicine, College of Medicine, Hanyang University, Seoul, Korea
| | - Hyeon Tae Kang
- Department Translational Medicine, Hanyang University Graduate School of Biomedical Science and Engineering, Seoul, Korea
| | - Ju Hee Oh
- Department Translational Medicine, Hanyang University Graduate School of Biomedical Science and Engineering, Seoul, Korea
| | - Seung Min Lee
- Department Translational Medicine, Hanyang University Graduate School of Biomedical Science and Engineering, Seoul, Korea
| | - Kiseok Jang
- Department of Pathology, College of Medicine, Hanyang University, Seoul, Korea
| |
Collapse
|
43
|
Tripathi DM, Vilaseca M, Lafoz E, Garcia-Calderó H, Viegas Haute G, Fernández-Iglesias A, Rodrigues de Oliveira J, García-Pagán JC, Bosch J, Gracia-Sancho J. Simvastatin Prevents Progression of Acute on Chronic Liver Failure in Rats With Cirrhosis and Portal Hypertension. Gastroenterology 2018; 155:1564-1577. [PMID: 30055171 DOI: 10.1053/j.gastro.2018.07.022] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [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: 05/31/2018] [Revised: 07/03/2018] [Accepted: 07/20/2018] [Indexed: 12/16/2022]
Abstract
BACKGROUND & AIMS Cirrhosis and its clinical consequences can be aggravated by bacterial infections, ultimately leading to the development of acute on chronic liver failure (ACLF), characterized by acute decompensation, organ failure, and high mortality within 28 days. Little is known about cellular and molecular mechanisms of ACLF in patients with cirrhosis, so no therapeutic options are available. We developed a sepsis-associated preclinical model of ACLF to facilitate studies of pathogenesis and evaluate the protective effects of simvastatin. METHODS Male Wistar rats inhaled CCl4 until they developed cirrhosis (at 10 weeks) or cirrhosis with ascites (at 15-16 weeks). Male Sprague-Dawley rats received bile-duct ligation for 28 days or intraperitoneal thioacetamide for 10 weeks to induce cirrhosis. After induction of cirrhosis, some rats received a single injection of lipopolysaccharide (LPS) to induce ACLF; some were given simvastatin or vehicle (control) 4 hours or 24 hours before induction of ACLF. We collected data on changes in hepatic and systemic hemodynamics, hepatic microvascular phenotype and function, and survival times. Liver tissues and plasma were collected and analyzed by immunoblots, quantitative polymerase chain reaction, immuno(fluoro)histochemistry and immunoassays. RESULTS Administration of LPS aggravated portal hypertension in rats with cirrhosis by increasing the severity of intrahepatic microvascular dysfunction, exacerbating hepatic inflammation, increasing oxidative stress, and recruiting hepatic stellate cells and neutrophils. Rats with cirrhosis given LPS had significantly shorter survival times than rats with cirrhosis given the control. Simvastatin prevented most of ACLF-derived complications and increased survival times. Simvastatin appeared to increase hepatic sinusoidal function and reduce portal hypertension and markers of inflammation and oxidation. The drug significantly reduced levels of transaminases, total bilirubin, and ammonia, as well as LPS-mediated activation of hepatic stellate cells in liver tissues of rats with cirrhosis. CONCLUSIONS In studies of rats with cirrhosis, we found administration of LPS to promote development of ACLF, aggravating the complications of chronic liver disease and decreasing survival times. Simvastatin reduced LPS-induced inflammation and liver damage in rats with ACLF, supporting its use in treatment of patients with advanced chronic liver disease.
Collapse
Affiliation(s)
- Dinesh Mani Tripathi
- Barcelona Hepatic Hemodynamic Lab, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clinic de Barcelona, CIBEREHD, Barcelona, Spain
| | - Marina Vilaseca
- Barcelona Hepatic Hemodynamic Lab, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clinic de Barcelona, CIBEREHD, Barcelona, Spain
| | - Erica Lafoz
- Barcelona Hepatic Hemodynamic Lab, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clinic de Barcelona, CIBEREHD, Barcelona, Spain
| | - Héctor Garcia-Calderó
- Barcelona Hepatic Hemodynamic Lab, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clinic de Barcelona, CIBEREHD, Barcelona, Spain
| | - Gabriela Viegas Haute
- Laboratório de Pesquisa em Biofísica Celular e Inflamação, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre-RS, Brazil
| | - Anabel Fernández-Iglesias
- Barcelona Hepatic Hemodynamic Lab, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clinic de Barcelona, CIBEREHD, Barcelona, Spain
| | - Jarbas Rodrigues de Oliveira
- Laboratório de Pesquisa em Biofísica Celular e Inflamação, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre-RS, Brazil
| | - Juan Carlos García-Pagán
- Barcelona Hepatic Hemodynamic Lab, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clinic de Barcelona, CIBEREHD, Barcelona, Spain
| | - Jaime Bosch
- Barcelona Hepatic Hemodynamic Lab, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clinic de Barcelona, CIBEREHD, Barcelona, Spain; Hepatology, Department of Biomedical Research, Inselspital, University of Bern, Switzerland.
| | - Jordi Gracia-Sancho
- Barcelona Hepatic Hemodynamic Lab, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clinic de Barcelona, CIBEREHD, Barcelona, Spain; Hepatology, Department of Biomedical Research, Inselspital, University of Bern, Switzerland.
| |
Collapse
|
44
|
Jayusman PA, Mohamed IN, Shuid AN. The Effects of Chemical Castration with Degarelix on Bone Turnover: Densitometric and Biomechanics Bone Properties of Male Rats. Int J Endocrinol Metab 2018; 16:e64038. [PMID: 30197659 PMCID: PMC6113792 DOI: 10.5812/ijem.64038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 04/16/2018] [Accepted: 04/25/2018] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Gonadotropin releasing hormone (GnRH) antagonists may cause chemical castration in males by suppressing the pituitary-gonadal axis, hence reducing testosterone level. There are limited data on the effects of degarelix, a newer series of potent and long acting GnRH antagonist on bone. OBJECTIVES The current study aimed at determining the effects of degarelix on bone turnover, bone densitometry, and bone mechanical strength in male rats. METHODS Eighteen male Sprague-Dawley rats were randomly divided into sham (SHAM), orchidectomized (ORX), and degarelix-induced (DGX) groups. Chemical castration was performed by subcutaneous degarelix injection (2 mg/kg) at the scapular region. The rats were scanned for baseline bone mineral area (BMA), bone mineral content (BMC), and bone mineral density (BMD) using dual-energy x-ray absorptiometry (DXA). Following six weeks of experimental period, BMA, BMC, and BMD were measured again with DXA and blood was collected for testosterone and bone biomarkers (osteocalcin and C-terminal of type I collagen crosslink (CTX-1)) measurements. The rats were euthanized and femora were dissected for bone biomechanical strength analysis. RESULTS Bilateral orchidectomy and degarelix administration significantly lowered serum testosterone level, decreased whole body BMC, femoral BMA, femoral BMC, and femoral BMD (P < 0.05) compared with the SHAM group. However, no significant changes were observed in bone biochemical markers and bone mechanical strength in all experimental groups. CONCLUSIONS In conclusion, degarelix administration had comparable effects on bone as bilateral orchidectomy. Administration of degarelix provides an alternative method of inducing testosterone deficient-osteopenia in male rats without need for removing the testes.
Collapse
Affiliation(s)
- Putri Ayu Jayusman
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, 56000 Cheras, Kuala Lumpur, Malaysia
| | - Isa Naina Mohamed
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, 56000 Cheras, Kuala Lumpur, Malaysia
| | - Ahmad Nazrun Shuid
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, 56000 Cheras, Kuala Lumpur, Malaysia
| |
Collapse
|
45
|
Carpenter CL, Kim AY, Kashani AH. Normative Retinal Thicknesses in Common Animal Models of Eye Disease Using Spectral Domain Optical Coherence Tomography. Adv Exp Med Biol 2018; 1074:157-166. [PMID: 29721940 DOI: 10.1007/978-3-319-75402-4_20] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
Purpose This study demonstrates a standardized approach to measuring retinal thickness (RT) using spectral domain optical coherence tomography (SD-OCT) in commonly used animal models of disease and reports a normative data set for future use. Materials and Methods Twenty normal eyes of 4 adult animal models (5 rats, 5 rabbits, 5 canines, and 5 mini-pigs) were used. Manual measurements were made on the commercially available Heidelberg Spectralis™ SD-OCT to determine the total, inner, and outer retinal thickness (RT) at fixed distances from the optic nerve head (ONH) (1, 2, 3, 4, 5, and 6 mm away) in order to control for normal variation in retinal thickness. Analysis of variance (ANOVA) with P value <0.05 indicated statistical significance. Results Total RT significantly decreased with increasing distance from the ONH for the canine, mini-pig, and rabbit vascular models. Inner RT significantly decreased for the canine, mini-pig, rabbit vascular, and rabbit avascular models; and outer RT significantly decreased for only the canine model. Among the animal models, RT at similar distances from the ONH were significantly different for total, inner, and outer RT. Conclusion There are significant differences in the total, inner, and outer RT of normal canine, mini-pig, rabbit, and rat retinas with SD-OCT using a standardized approach. These measurements provide a normative reference for future studies and illustrate a standardized method of assessing RT.
Collapse
Affiliation(s)
- Christy L Carpenter
- Department of Ophthalmology, USC Eye Institute, Keck School of Medicine of the University of Southern California, Los Angeles, California, USA
| | - Alice Y Kim
- Department of Ophthalmology, USC Eye Institute, Keck School of Medicine of the University of Southern California, Los Angeles, California, USA
| | - Amir H Kashani
- Department of Ophthalmology, USC Eye Institute, Keck School of Medicine of the University of Southern California, Los Angeles, California, USA. .,USC Roski Eye Institute, Los Angeles, CA, USA.
| |
Collapse
|
46
|
Abstract
Objectives The treatment of osteoporotic fractures is a major challenge, and the enhancement of healing is critical as a major goal in modern fracture management. Most osteoporotic fractures occur at the metaphyseal bone region but few models exist and the healing is still poorly understood. A systematic review was conducted to identify and analyse the appropriateness of current osteoporotic metaphyseal fracture animal models. Materials and Methods A literature search was performed on the Pubmed, Embase, and Web of Science databases, and relevant articles were selected. A total of 19 studies were included. Information on the animal, induction of osteoporosis, fracture technique, site and fixation, healing results, and utility of the model were extracted. Results Fracture techniques included drill hole defects (3 of 19), bone defects (3 of 19), partial osteotomy (1 of 19), and complete osteotomies (12 of 19). Drill hole models and incomplete osteotomy models are easy to perform and allow the study of therapeutic agents but do not represent the usual clinical setting. Additionally, biomaterials can be filled into drill hole defects for analysis. Complete osteotomy models are most commonly used and are best suited for the investigation of therapeutic drugs or noninvasive interventions. The metaphyseal defect models allow the study of biomaterials, which are associated with complex and comminuted osteoporotic fractures. Conclusion For a clinically relevant model, we propose that an animal model should satisfy the following criteria to study osteoporotic fracture healing: 1) induction of osteoporosis, 2) complete osteotomy or defect at the metaphysis unilaterally, and 3) internal fixation. Cite this article: R. M. Y. Wong, M. H. V. Choy, M. C. M. Li, K-S. Leung, S. K-H. Chow, W-H. Cheung, J. C. Y. Cheng. A systematic review of current osteoporotic metaphyseal fracture animal models. Bone Joint Res 2018;7:6–11. DOI: 10.1302/2046-3758.71.BJR-2016-0334.R2.
Collapse
Affiliation(s)
- R M Y Wong
- Department of Orthopaedics and Traumatology, Prince of Wales Hospital Authority, 30-32 Ngan Shing Street, Shatin, Hong Kong and Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - M H V Choy
- Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - M C M Li
- Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - K-S Leung
- Department of Orthopaedics and Traumatology, Prince of Wales Hospital Authority, 30-32 Ngan Shing Street, Shatin, Hong Kong and Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - S K-H Chow
- Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - W-H Cheung
- Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - J C Y Cheng
- Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Shatin, Hong Kong
| |
Collapse
|
47
|
Anselmi L, Toti L, Bove C, Hampton J, Travagli RA. A Nigro-Vagal Pathway Controls Gastric Motility and Is Affected in a Rat Model of Parkinsonism. Gastroenterology 2017; 153:1581-1593. [PMID: 28912019 PMCID: PMC5705565 DOI: 10.1053/j.gastro.2017.08.069] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [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: 04/30/2017] [Revised: 08/16/2017] [Accepted: 08/29/2017] [Indexed: 12/19/2022]
Abstract
BACKGROUND & AIMS In most patients with Parkinson's disease, gastrointestinal (GI) dysfunctions, such as gastroparesis and constipation, are prodromal to the cardinal motor symptoms of the disease. Sporadic Parkinson's disease has been proposed to develop after ingestion of neurotoxicants that affect the brain-gut axis via the vagus nerve, and then travel to higher centers, compromising the substantia nigra pars compacta (SNpc) and, later, the cerebral cortex. We aimed to identify the pathway that connects the brainstem vagal nuclei and the SNpc, and to determine whether this pathway is compromised in a rat model of Parkinsonism. METHODS To study this neural pathway in rats, we placed tracers in the dorsal vagal complex or SNpc; brainstem and midbrain were examined for tracer distribution and neuronal neurochemical phenotype. Rats were given injections of paraquat once weekly for 3 weeks to induce features of Parkinsonism, or vehicle (control). Gastric tone and motility were recorded after N-methyl-d-aspartate microinjection in the SNpc and/or optogenetic stimulation of nigro-vagal terminals in the dorsal vagal complex. RESULTS Stimulation of the SNpc increased gastric tone and motility via activation of dopamine 1 receptors in the dorsal vagal complex. In the paraquat-induced model of Parkinsonism, this nigro-vagal pathway was compromised during the early stages of motor deficit development. CONCLUSIONS We identified and characterized a nigro-vagal monosynaptic pathway in rats that controls gastric tone and motility. This pathway might be involved in the prodromal gastric dysmotility observed in patients with early-stage Parkinson's disease.
Collapse
Affiliation(s)
- Laura Anselmi
- Department of Neural and Behavioral Sciences, Penn State College of Medicine, Hershey, Pennsylvania
| | - Luca Toti
- Department of Neural and Behavioral Sciences, Penn State College of Medicine, Hershey, Pennsylvania
| | - Cecilia Bove
- Department of Neural and Behavioral Sciences, Penn State College of Medicine, Hershey, Pennsylvania
| | - Jessica Hampton
- Department of Neural and Behavioral Sciences, Penn State College of Medicine, Hershey, Pennsylvania
| | - R Alberto Travagli
- Department of Neural and Behavioral Sciences, Penn State College of Medicine, Hershey, Pennsylvania.
| |
Collapse
|
48
|
Yadav P, Ellinghaus D, Rémy G, Freitag-Wolf S, Cesaro A, Degenhardt F, Boucher G, Delacre M, Peyrin-Biroulet L, Pichavant M, Rioux JD, Gosset P, Franke A, Schumm LP, Krawczak M, Chamaillard M, Dempfle A, Andersen V. Genetic Factors Interact With Tobacco Smoke to Modify Risk for Inflammatory Bowel Disease in Humans and Mice. Gastroenterology 2017; 153:550-565. [PMID: 28506689 PMCID: PMC5526723 DOI: 10.1053/j.gastro.2017.05.010] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [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: 09/16/2016] [Revised: 03/28/2017] [Accepted: 05/08/2017] [Indexed: 12/12/2022]
Abstract
BACKGROUND & AIMS The role of tobacco smoke in the etiology of inflammatory bowel disease (IBD) is unclear. We investigated interactions between genes and smoking (gene-smoking interactions) that affect risk for Crohn's disease (CD) and ulcerative colitis (UC) in a case-only study of patients and in mouse models of IBD. METHODS We used 55 Immunochip-wide datasets that included 19,735 IBD cases (10,856 CD cases and 8879 UC cases) of known smoking status. We performed 3 meta-analyses each for CD, UC, and IBD (CD and UC combined), comparing data for never vs ever smokers, never vs current smokers, and never vs former smokers. We studied the effects of exposure to cigarette smoke in Il10-/- and Nod2-/- mice, as well as in Balb/c mice without disruption of these genes (wild-type mice). Mice were exposed to the smoke of 5 cigarettes per day, 5 days a week, for 8 weeks, in a ventilated smoking chamber, or ambient air (controls). Intestines were collected and analyzed histologically and by reverse transcription polymerase chain reaction. RESULTS We identified 64 single nucleotide polymorphisms (SNPs) for which the association between the SNP and IBD were modified by smoking behavior (meta-analysis Wald test P < 5.0 × 10-5; heterogeneity Cochrane Q test P > .05). Twenty of these variants were located within the HLA region at 6p21. Analysis of classical HLA alleles (imputed from SNP genotypes) revealed an interaction with smoking. We replicated the interaction of a variant in NOD2 with current smoking in relation to the risk for CD (frameshift variant fs1007insC; rs5743293). We identified 2 variants in the same genomic region (rs2270368 and rs17221417) that interact with smoking in relation to CD risk. Approximately 45% of the SNPs that interact with smoking were in close vicinity (≤1 Mb) to SNPs previously associated with IBD; many were located near or within genes that regulate mucosal barrier function and immune tolerance. Smoking modified the disease risk of some variants in opposite directions for CD vs UC. Exposure of Interleukin 10 (il10)-deficient mice to cigarette smoke accelerated development of colitis and increased expression of interferon gamma in the small intestine compared to wild-type mice exposed to smoke. NOD2-deficient mice exposed to cigarette smoke developed ileitis, characterized by increased expression of interferon gamma, compared to wild-type mice exposed to smoke. CONCLUSIONS In an analysis of 55 Immunochip-wide datasets, we identified 64 SNPs whose association with risk for IBD is modified by tobacco smoking. Gene-smoking interactions were confirmed in mice with disruption of Il10 and Nod2-variants of these genes have been associated with risk for IBD. Our findings from mice and humans revealed that the effects of smoking on risk for IBD depend on genetic variants.
Collapse
Affiliation(s)
- Pankaj Yadav
- Institute of Medical Informatics and Statistics, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - David Ellinghaus
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Gaëlle Rémy
- University of Lille, CNRS, Inserm, CHRU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Centre d’Infection et d’Immunité de Lille, F-59000 Lille, France
| | - Sandra Freitag-Wolf
- Institute of Medical Informatics and Statistics, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Anabelle Cesaro
- University of Lille, CNRS, Inserm, CHRU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Centre d’Infection et d’Immunité de Lille, F-59000 Lille, France
| | - Frauke Degenhardt
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Kiel, Germany
| | | | - Myriam Delacre
- University of Lille, CNRS, Inserm, CHRU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Centre d’Infection et d’Immunité de Lille, F-59000 Lille, France
| | | | - Laurent Peyrin-Biroulet
- Department of Gastroenterology and Inserm U954, Nancy University Hospital, Lorraine University, 54500 Vandoeuvre-lès-Nancy, France
| | - Muriel Pichavant
- University of Lille, CNRS, Inserm, CHRU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Centre d’Infection et d’Immunité de Lille, F-59000 Lille, France
| | - John D Rioux
- Research Center, Montreal Heart Institute, Montreal, Quebec, Canada,Faculté de Médecine, Université de Montréal, Montreal, Quebec, Canada
| | - Philippe Gosset
- University of Lille, CNRS, Inserm, CHRU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Centre d’Infection et d’Immunité de Lille, F-59000 Lille, France
| | - Andre Franke
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - L. Philip Schumm
- Department of Public Health Sciences, University of Chicago, Chicago, IL, USA
| | - Michael Krawczak
- Institute of Medical Informatics and Statistics, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Mathias Chamaillard
- University of Lille, CNRS, Inserm, CHRU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Centre d’Infection et d’Immunité de Lille, F-59000 Lille, France
| | - Astrid Dempfle
- Institute of Medical Informatics and Statistics, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Vibeke Andersen
- Molecular Diagnostic and Clinical Research Unit, Institut for Regional Sundhedsforskning, Center Sønderjylland, University of Southern Denmark, Odense, Denmark; Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark; Laboratory Center, Hospital of Southern Jutland, Aabenraa, Denmark.
| |
Collapse
|
49
|
Hayward A, Adamson L, Neill JC. Partial agonism at the α7 nicotinic acetylcholine receptor improves attention, impulsive action and vigilance in low attentive rats. Eur Neuropsychopharmacol 2017; 27:325-35. [PMID: 28161246 DOI: 10.1016/j.euroneuro.2017.01.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 01/09/2017] [Accepted: 01/18/2017] [Indexed: 11/23/2022]
Abstract
Inattention is a disabling symptom in conditions such as schizophrenia and attention deficit/hyperactivity disorder. Nicotine can improve attention and vigilance, but is unsuitable for clinical use due to abuse liability. Genetic knockout of the α7 nicotinic acetylcholine receptor (nAChR) induces attention deficits therefore selective agonism may improve attention, without the abuse liability associated with nicotine. The α7 nAChR partial agonist encenicline (formerly EVP-6124) enhances memory in rodents and humans. Here we investigate, for the first time, efficacy of encenicline to improve attention and vigilance in animals behaviourally grouped for low attentive traits in the 5 choice-continuous performance task (5C-CPT). Female Lister Hooded rats were trained to perform the 5C-CPT with a variable stimulus duration (SD). Animals were then grouped based on performance into upper and lower quartiles of d' (vigilance) and accuracy (selective attention), producing high-attentive (HA) and low-attentive (LA) groups. LA animals showed an increase in selective attention and vigilance at 0.3mg/kg encenicline, a reduction in impulsive action (probability of false alarms) and increase in vigilance following 1mg/kg at 0.75sSD. At 1mg/kg, HA animals had reduced selective attention at 0.75sSD and reduced vigilance at 0.75 and 1.25sSD. Improvement of attention, vigilance and impulsive action in LA animals demonstrates that encenicline has pro-attentive properties dependent on baseline levels of performance. Our work suggests that α7 nAChR partial agonism may improve attention particularly in conditions with low attention.
Collapse
|
50
|
Bayrak AF, Olgun Y, Ozbakan A, Aktas S, Kulan CA, Kamaci G, Demir E, Yilmaz O, Olgun L. The Effect of Insulin Like Growth Factor-1 on Recovery of Facial Nerve Crush Injury. Clin Exp Otorhinolaryngol 2017; 10:296-302. [PMID: 28264555 PMCID: PMC5678033 DOI: 10.21053/ceo.2016.00997] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [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: 07/15/2016] [Revised: 12/30/2016] [Accepted: 01/09/2017] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVES The aim of this study is to investigate the efficacy of locally applied insulin-like growth factor 1 (IGF-1) on the recovery of facial nerve functions after crush injury in a rabbit model. METHODS The rabbits were randomly assigned into three groups. Group 1 consisted of the rabbits with crush injury alone; group 2, the animals applied saline solution onto the crushed facial nerve and group 3, IGF-1 implemented to the nerve in the same manner. Facial nerve injury was first electrophysiologically studied on 10th and 42nd days of the procedure. The damage to the facial nerves was then investigated histopathologically, after sacrification of the animals. RESULTS In the electrophysiological study, compound muscle action potential amplitudes of the crushed nerves in the second group were decreased. In pathological specimens of the first and second groups, the orders of axons were distorted; demyelination and proliferation of Schwann cells were observed. However, in IGF-1 treated group axonal order and myelin were preserved, and Schwann cell proliferation was close to normal (P<0.05). CONCLUSION Local application of IGF-1 in a slow releasing gel was found efficacious in the recovery of the facial nerve crush injury in rabbits. IGF-1 was considered worthy of being tried in clinical studies in facial nerve injury cases.
Collapse
Affiliation(s)
- Asuman Feda Bayrak
- Otolaryngology Department, Izmir Ataturk Training and Research Hospital, Izmir, Turkey
| | - Yuksel Olgun
- Otolaryngology Department, Dokuz Eylul University Medical Faculty, Izmir, Turkey
| | - Ayla Ozbakan
- Otorhinolaryngology Department, Kutahya Simav State Hospital, Kutahya, Turkey
| | - Safiye Aktas
- Basic Oncology Department, Dokuz Eylul University, Institue of Oncology, Izmir, Turkey
| | - Can Ahmet Kulan
- Neurology Department, Izmir Bozyaka Training and Research Hospital, Izmir, Turkey
| | - Gonca Kamaci
- Dokuz Eylul University, Animal Laboratory, Izmir, Turkey
| | - Emine Demir
- Otorhinolaryngology Department, Izmir Bozyaka Training and Research Hospital, Izmir, Turkey
| | - Osman Yilmaz
- Dokuz Eylul University, Animal Laboratory, Izmir, Turkey
| | - Levent Olgun
- Otorhinolaryngology Department, Izmir Bozyaka Training and Research Hospital, Izmir, Turkey
| |
Collapse
|