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Cheng Y, Chen Y, Li K, Liu S, Pang C, Gao L, Xie J, Wenjing LV, Yu H, Deng B. How inflammation dictates diabetic peripheral neuropathy: An enlightening review. CNS Neurosci Ther 2024; 30:e14477. [PMID: 37795833 PMCID: PMC11017439 DOI: 10.1111/cns.14477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 08/28/2023] [Accepted: 09/08/2023] [Indexed: 10/06/2023] Open
Abstract
BACKGROUND Diabetic peripheral neuropathy (DPN) constitutes a debilitating complication associated with diabetes. Although, the past decade has seen rapid developments in understanding the complex etiology of DPN, there are no approved therapies that can halt the development of DPN, or target the damaged nerve. Therefore, clarifying the pathogenesis of DPN and finding effective treatment are the crucial issues for the clinical management of DPN. AIMS This review is aiming to summary the current knowledge on the pathogenesis of DPN, especially the mechanism and application of inflammatory response. METHODS We systematically summarized the latest studies on the pathogenesis and therapeutic strategies of diabetic neuropathy in PubMed. RESULTS In this seminal review, the underappreciated role of immune activation in the progression of DPN is scrutinized. Novel insights into the inflammatory regulatory mechanisms of DPN have been unearthed, illuminating potential therapeutic strategies of notable clinical significance. Additionally, a nuanced examination of DPN's complex etiology, including aberrations in glycemic control and insulin signaling pathways, is presented. Crucially, an emphasis has been placed on translating these novel understandings into tangible clinical interventions to ameliorate patient outcomes. CONCLUSIONS This review is distinguished by synthesizing cutting-edge mechanisms linking inflammation to DPN and identifying innovative, inflammation-targeted therapeutic approaches.
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Affiliation(s)
- Yifan Cheng
- Center for Rehabilitation Medicine, Department of Neurology, Zhejiang Provincial People's HospitalAffiliated People's Hospital, Hangzhou Medical CollegeHangzhouChina
| | - Yinuo Chen
- Department of NeurologyFirst Affiliated Hospital of Wenzhou Medical UniversityWenzhouZhejiang ProvinceChina
- First School of Clinical MedicineWenzhou Medical UniversityWenzhouZhejiang ProvinceChina
| | - Kezheng Li
- Department of NeurologyFirst Affiliated Hospital of Wenzhou Medical UniversityWenzhouZhejiang ProvinceChina
- First School of Clinical MedicineWenzhou Medical UniversityWenzhouZhejiang ProvinceChina
| | - Shuwei Liu
- First School of Clinical MedicineWenzhou Medical UniversityWenzhouZhejiang ProvinceChina
| | - Chunyang Pang
- Department of NeurologyFirst Affiliated Hospital of Wenzhou Medical UniversityWenzhouZhejiang ProvinceChina
| | - Lingfei Gao
- Department of NeurologyFirst Affiliated Hospital of Wenzhou Medical UniversityWenzhouZhejiang ProvinceChina
| | - Jiali Xie
- Department of Neurology, Shanghai East HospitalTongji UniversityShanghaiP.R. China
| | - L. V. Wenjing
- Department of GeriatricsThe Affiliated Hospital of Qingdao UniversityQingdaoShandong ProvinceChina
| | - Huan Yu
- Department of PediatricsSecond Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical UniversityWenzhouChina
| | - Binbin Deng
- Department of NeurologyFirst Affiliated Hospital of Wenzhou Medical UniversityWenzhouZhejiang ProvinceChina
- First School of Clinical MedicineWenzhou Medical UniversityWenzhouZhejiang ProvinceChina
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2
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Holani R, Littlejohn PT, Edwards K, Petersen C, Moon KM, Stacey RG, Bozorgmehr T, Gerbec ZJ, Serapio-Palacios A, Krekhno Z, Donald K, Foster LJ, Turvey SE, Finlay BB. A Murine Model of Maternal Micronutrient Deficiencies and Gut Inflammatory Host-microbe Interactions in the Offspring. Cell Mol Gastroenterol Hepatol 2024; 17:827-852. [PMID: 38307490 PMCID: PMC10973814 DOI: 10.1016/j.jcmgh.2024.01.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 01/22/2024] [Accepted: 01/23/2024] [Indexed: 02/04/2024]
Abstract
BACKGROUND & AIMS Micronutrient deficiency (MND) (ie, lack of vitamins and minerals) during pregnancy is a major public health concern. Historically, studies have considered micronutrients in isolation; however, MNDs rarely occur alone. The impact of co-occurring MNDs on public health, mainly in shaping mucosal colonization by pathobionts from the Enterobacteriaceae family, remains undetermined due to lack of relevant animal models. METHODS To establish a maternal murine model of multiple MND (MMND), we customized a diet deficient in vitamins (A, B12, and B9) and minerals (iron and zinc) that most commonly affect children and women of reproductive age. Thereafter, mucosal adherence by Enterobacteriaceae, the associated inflammatory markers, and proteomic profile of intestines were determined in the offspring of MMND mothers (hereafter, low micronutrient [LM] pups) via bacterial plating, flow cytometry, and mass spectrometry, respectively. For human validation, Enterobacteriaceae abundance, assessed via 16s sequencing of 3-month-old infant fecal samples (n = 100), was correlated with micronutrient metabolites using Spearman's correlation in meconium of children from the CHILD birth cohort. RESULTS We developed an MMND model and reported an increase in colonic abundance of Enterobacteriaceae in LM pups at weaning. Findings from CHILD cohort confirmed a negative correlation between Enterobacteriaceae and micronutrient availability. Furthermore, pro-inflammatory cytokines and increased infiltration of lymphocyte antigen 6 complex high monocytes and M1-like macrophages were evident in the colons of LM pups. Mechanistically, mitochondrial dysfunction marked by reduced expression of nicotinamide adenine dinucleotide (NAD)H dehydrogenase and increased expression of NAD phosphate oxidase (Nox) 1 contributed to the Enterobacteriaceae bloom. CONCLUSION This study establishes an early life MMND link to intestinal pathobiont colonization and mucosal inflammation via damaged mitochondria in the offspring.
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Affiliation(s)
- Ravi Holani
- Michael Smith Laboratories, University of British Columbia, Vancouver, British Columbia, Canada; Department of Microbiology and Immunology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Paula T Littlejohn
- Department of Medical Genetics, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada; British Columbia Children's Hospital Research Institute, Vancouver, British Columbia, Canada; Centre for Molecular Medicine and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada; Department of Pediatrics, University of British Columbia, Vancouver, British Columbia, Canada
| | - Karlie Edwards
- British Columbia Children's Hospital Research Institute, Vancouver, British Columbia, Canada
| | - Charisse Petersen
- Department of Pediatrics, University of British Columbia, Vancouver, British Columbia, Canada; British Columbia Children's Hospital, Vancouver, British Columbia, Canada
| | - Kyung-Mee Moon
- Michael Smith Laboratories, University of British Columbia, Vancouver, British Columbia, Canada; Biochemistry and Molecular Biology Department, University of British Columbia, Vancouver, British Columbia, Canada
| | - Richard G Stacey
- Michael Smith Laboratories, University of British Columbia, Vancouver, British Columbia, Canada
| | - Tahereh Bozorgmehr
- Michael Smith Laboratories, University of British Columbia, Vancouver, British Columbia, Canada; Department of Microbiology and Immunology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Zachary J Gerbec
- Michael Smith Laboratories, University of British Columbia, Vancouver, British Columbia, Canada; Biochemistry and Molecular Biology Department, University of British Columbia, Vancouver, British Columbia, Canada; Department of Integrative Oncology, BC Cancer Research Institute, Vancouver, British Columbia, Canada
| | - Antonio Serapio-Palacios
- Michael Smith Laboratories, University of British Columbia, Vancouver, British Columbia, Canada; Department of Microbiology and Immunology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Zakhar Krekhno
- Michael Smith Laboratories, University of British Columbia, Vancouver, British Columbia, Canada; Department of Microbiology and Immunology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Katherine Donald
- Michael Smith Laboratories, University of British Columbia, Vancouver, British Columbia, Canada; Department of Microbiology and Immunology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Leonard J Foster
- Michael Smith Laboratories, University of British Columbia, Vancouver, British Columbia, Canada; Biochemistry and Molecular Biology Department, University of British Columbia, Vancouver, British Columbia, Canada
| | - Stuart E Turvey
- Department of Pediatrics, University of British Columbia, Vancouver, British Columbia, Canada
| | - B Brett Finlay
- Michael Smith Laboratories, University of British Columbia, Vancouver, British Columbia, Canada; Department of Microbiology and Immunology, University of British Columbia, Vancouver, British Columbia, Canada; Biochemistry and Molecular Biology Department, University of British Columbia, Vancouver, British Columbia, Canada.
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3
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Lu X, Chen Z, Lu J, Watsky MA. Effects of 1,25-Vitamin D3 and 24,25-Vitamin D3 on Corneal Nerve Regeneration in Diabetic Mice. Biomolecules 2023; 13:1754. [PMID: 38136625 PMCID: PMC10742127 DOI: 10.3390/biom13121754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 11/30/2023] [Accepted: 12/02/2023] [Indexed: 12/24/2023] Open
Abstract
Corneal nerve homeostasis is essential for the functional integrity of the ocular surface. Vitamin D deficiency (VDD) and vitamin D receptor knockout (VDR KO) have been found to reduce corneal nerve density in diabetic mice. This is the first study to comprehensively examine the influence of vitamin D on nerve regeneration following corneal epithelial injury in diabetic mice. Corneal nerve regeneration was significantly retarded by diabetes, VDR KO, and VDD, and it was accelerated following topical 1,25 Vit D and 24,25 Vit D administration. Furthermore, topical 1,25 Vit D and 24,25 Vit D increased nerve growth factor, glial cell line-derived neurotropic factor, and neurotropin-3 protein expression, and it increased secretion of GDNF protein from human corneal epithelial cells. CD45+ cells and macrophage numbers were significantly decreased, and vitamin D increased CD45+ cell and macrophage recruitment in these wounded diabetic mouse corneas. The accelerated nerve regeneration observed in these corneas following topical 1,25 Vit D and 24,25 Vit D administration may be related to the vitamin D-stimulated expression, secretion of neurotrophic factors, and recruitment of immune cells.
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Affiliation(s)
- Xiaowen Lu
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, 1120 15th Street, CB-2901, Augusta, GA 30912, USA
| | | | | | - Mitchell A. Watsky
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, 1120 15th Street, CB-2901, Augusta, GA 30912, USA
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4
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Katagi M, Nakae Y, Okano J, Fujino K, Tanaka T, Miyazawa I, Ohashi N, Nakagawa T, Kojima H. Aberrant bone marrow-derived microglia in the hypothalamus may dysregulate appetite in diabetes. Biochem Biophys Res Commun 2023; 682:132-137. [PMID: 37806251 DOI: 10.1016/j.bbrc.2023.09.083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 09/26/2023] [Indexed: 10/10/2023]
Abstract
Bone marrow derived cells (BMDCs) migrate into the hypothalamus, where those cells give rise to microglia to regulate food intake. Given the fact that diabetes functionally impairs BMDCs, we hypothesized that diabetic microglia would fail to exhibit physiological function, accounting for hyperphagia in diabetes. To examine the role of BMDCs, total bone marrow cells from GFP transgenic mice were transplanted into wild type mice in which diabetes was induced by streptozotocin. We first confirmed that bone marrow transplantation could be utilized to examine BMDCs in the brain parenchyma as GFP positive cells could engraft the brain parenchyma and give rise to microglia even when the BBB was intact in the recipient mice. While diabetic mice manifested hyperphagia, BMDCs were in smaller number in the hypothalamus with less response to fasting in the brain parenchyma compared to nondiabetic mice. This finding was also confirmed by examining nondiabetic chimera mice in which BMDCs were diabetic. Those mice also exhibited less response of BMDCs in response to fasting. In conclusion, diabetic BMDCs had less response of microglia to fasting, perhaps accounting for diabetic hyperphagia.
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Affiliation(s)
- Miwako Katagi
- Department of Biocommunication Development, Shiga University of Medical Science, Otsu, Shiga, Japan
| | - Yuki Nakae
- Department of Regenerative Medicine Development, Shiga University of Medical Science, Otsu, Shiga, Japan
| | - Junko Okano
- Department of Plastic and Reconstructive Surgery, Shiga University of Medical Science, Otsu, Japan
| | - Kazunori Fujino
- Department of Critical and Intensive Care Medicine, Shiga University of Medical Science, Otsu, Japan
| | - Tomoki Tanaka
- Department of Critical and Intensive Care Medicine, Shiga University of Medical Science, Otsu, Japan
| | - Itsuko Miyazawa
- Department of Education Center for Medicine and Nursing, Shiga University of Medical Science, Otsu, Japan
| | - Natsuko Ohashi
- Department of Medicine, Division of Diabetology, Endocrinology and Nephrology, Shiga University of Medical Science, Otsu, Japan
| | - Takahiko Nakagawa
- Department of Regenerative Medicine Development, Shiga University of Medical Science, Otsu, Shiga, Japan
| | - Hideto Kojima
- Department of Biocommunication Development, Shiga University of Medical Science, Otsu, Shiga, Japan; Department of Regenerative Medicine Development, Shiga University of Medical Science, Otsu, Shiga, Japan.
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5
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Alshawwa SZ, El-Masry TA, Nasr M, Kira AY, Alotaibi HF, Sallam AS, Elekhnawy E. Celecoxib-Loaded Cubosomal Nanoparticles as a Therapeutic Approach for Staphylococcus aureus In Vivo Infection. Microorganisms 2023; 11:2247. [PMID: 37764091 PMCID: PMC10535980 DOI: 10.3390/microorganisms11092247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 08/31/2023] [Accepted: 09/05/2023] [Indexed: 09/29/2023] Open
Abstract
There is a great need for novel approaches to treating bacterial infections, due to the vast dissemination of resistance among pathogenic bacteria. Staphylococcus aureus are ubiquitous Gram-positive pathogenic bacteria and are rapidly acquiring antibiotic resistance. Here, celecoxib was encapsulated into cubosomal nanoparticles, and the particle morphology, size distribution, zeta potential, entrapment efficiency, and celecoxib release were evaluated in vitro. Also, a systemic infection model in mice elucidated the in vivo antibacterial action of the celecoxib cubosomes. Cubosomes are a nanotechnology-based delivery system which can adhere to the external peptidoglycan layers of Gram-positive bacteria and penetrate them. The size distribution investigation revealed that the prepared celecoxib-loaded cubosomes had a mean particle size of 128.15 ± 3.04 nm with a low polydispersity index of 0.235 ± 0.023. The zeta potential measurement showed that the prepared cubosomes had a negative surface charge of -17.50 ± 0.45, indicating a highly stable nanodispersion formation with little susceptibility to particle aggregation. The cubosomal dispersion exhibited an entrapment efficiency of 88.57 ± 2.36%. The transmission electron micrograph for the prepared celecoxib-loaded cubosomes showed a narrow size distribution for the cubosomal nanoparticles, which had a spherical shape and were non-aggregated. The tested cubosomes diminished the inflammation in the treated mice's liver and spleen tissues, as revealed by hematoxylin and eosin stain and Masson's trichrome stain. The immunostained tissues with nuclear factor kappa B and caspase-3 monoclonal antibodies revealed a marked decrease in these markers in the celecoxib-treated group, as it resulted in negative or weak immunostaining in liver and spleen that ranged from 4.54% to 17.43%. This indicates their inhibitory effect on the inflammatory pathway and apoptosis, respectively. Furthermore, they reduced the bacterial burden in the studied tissues. This is alongside a decrease in the inflammatory markers (interleukin-1 beta, interleukin-6, cyclooxygenase-2, and tumor necrosis factor-alpha) determined by ELISA and qRT-PCR. The IL-1β levels were 16.66 ± 0.5 pg/mg and 17 ± 0.9 pg/mg in liver and spleen, respectively. Also, IL-6 levels were 85 ± 3.2 pg/mg and 84 ± 2.4 pg/mg in liver and spleen, respectively. In conclusion, the current study introduced cubosomes as an approach for the formulation of celecoxib to enhance its in vivo antibacterial action by improving its oral bioavailability.
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Affiliation(s)
- Samar Zuhair Alshawwa
- Department of Pharmaceutical Sciences, College of Pharmacy, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Thanaa A. El-Masry
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Tanta University, Tanta 31527, Egypt
| | - Mohamed Nasr
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Helwan University, Cairo 11790, Egypt
- Department of Pharmaceutics, Faculty of Pharmacy, Delta University for Science and Technology, Mansoura 11152, Egypt
| | - Ahmed Y. Kira
- Department of Pharmaceutics, Faculty of Pharmacy, Delta University for Science and Technology, Mansoura 11152, Egypt
| | - Hadil Faris Alotaibi
- Department of Pharmaceutical Sciences, College of Pharmacy, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | | | - Engy Elekhnawy
- Pharmaceutical Microbiology Department, Faculty of Pharmacy, Tanta University, Tanta 31527, Egypt
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6
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Yin Y, Wang L, Zhao L, Lin L, Shen X. Effect of 10.6 μm laser moxibustion on inflammation in diabetic peripheral neuropathy rats. Front Endocrinol (Lausanne) 2023; 14:1203677. [PMID: 37593350 PMCID: PMC10427917 DOI: 10.3389/fendo.2023.1203677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 07/14/2023] [Indexed: 08/19/2023] Open
Abstract
Diabetic peripheral neuropathy (DPN) is the main cause of disability in diabetes patients but the efficacy of available drugs is poor. Moxibustion is an adjunctive treatment for DPN that can reduce symptoms. The peak value of the far infrared wavelength of 10.6 μm laser moxibustion is close to the infrared radiation spectrum of traditional moxibustion. Its effect is similar to that of moxibustion and does not cause pain, infection or produce irritating smoke. Twenty-four male SD rats were divided into control (Con), DPN, laser moxibustion (LM), and pyrrolidine dithiocarbamate (PDTC) groups (n=6/group). The DPN, LM and PDTC group rats were intraperitoneally injected with 1% streptozotocin (STZ) to induce a model of DPN. LM group rats were irradiated with a laser at bilateral ST36 acupoints for 15 min, once every other day, for 14 days. PDTC group rats were intraperitoneally injected with PDTC once a day. Body weight, blood glucose, and paw withdrawal mechanical threshold (PWMT) were measured and laser speckle imaging (LSI) performed before and after modeling and at 1 and 2 weeks after intervention. Two weeks after intervention, changes in serum interleukin 1β (IL1β), interleukin 6 (IL6), tumor necrosis factor α (TNFα) and nerve growth factor (NGF) were analyzed, and the abundance of NF-κB and IκB-α proteins and levels of NF-κB and IκB-α mRNAs in the sciatic nerve were observed. The results showed that 10.6 μm laser moxibustion can relieve pain, improve microcirculation, and alleviate inflammation in DPN rats, possibly via the NF-κB inflammatory pathway.
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Affiliation(s)
- Yue Yin
- School of Acupuncture-Moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Lina Wang
- School of Acupuncture-Moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Ling Zhao
- School of Acupuncture-Moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Lin Lin
- School of Nursing, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xueyong Shen
- School of Acupuncture-Moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Laboratory of Systemic Physiology for Acupuncture and Meridian, Shanghai Research Center of Acupuncture and Meridian, Shanghai, China
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7
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Lu X, Chen Z, Lu J, Watsky M. Effects of Topical 1,25 and 24,25 Vitamin D on Diabetic, Vitamin D Deficient and Vitamin D Receptor Knockout Mouse Corneal Wound Healing. Biomolecules 2023; 13:1065. [PMID: 37509101 PMCID: PMC10377579 DOI: 10.3390/biom13071065] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 06/26/2023] [Accepted: 06/28/2023] [Indexed: 07/30/2023] Open
Abstract
Delayed or prolonged corneal wound healing and non-healing corneas put patients at risk for ocular surface infections and subsequent stromal opacification, resulting in discomfort or visual loss. It is important to enhance corneal wound healing efficiency and quality. Vitamin D (Vit D) is both a hormone and a vitamin, and its insufficiency has been linked to immune disorders and diabetes. For this study, wound healing and recruitment of CD45+ cells into the wound area of normoglycemic and diabetic mice were examined following corneal epithelial debridement and treatment with 1,25-dihyroxyvitamin D (1,25 Vit D) or 24,25-dihydroxyvitamin D (24,25 Vit D). Treatment with topical 1,25-dihyroxyvitamin D (1,25 Vit D) resulted in significantly increased corneal wound healing rates of normoglycemic, diabetic and diabetic Vit D deficient mice. Furthermore, 24,25-dihydroxyvitamin D (24,25 Vit D) significantly increased corneal wound healing of diabetic Vit D deficient and Vit D receptor knockout (VDR KO) mice. In addition, CD45+ cell numbers were reduced in diabetic and VDR KO mouse corneas compared to normoglycemic mice, and 24,25 Vit D increased the recruitment of CD45+ cells to diabetic mouse corneas after epithelial debridement. CD45+ cells were found to infiltrate into the corneal basal epithelial layer after corneal epithelial debridement. Our data indicate that topical Vit D promotes corneal wound healing and further supports previous work that the Vit D corneal wound healing effect is not totally VDR-dependent.
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Affiliation(s)
| | | | | | - Mitchell Watsky
- Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University, Augusta, GA 30912, USA
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8
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Kojima H, Katagi M, Okano J, Nakae Y, Ohashi N, Fujino K, Miyazawa I, Nakagawa T. Complete remission of diabetes with a transient HDAC inhibitor and insulin in streptozotocin mice. Commun Biol 2023; 6:637. [PMID: 37311905 DOI: 10.1038/s42003-023-05010-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 06/02/2023] [Indexed: 06/15/2023] Open
Abstract
Despite the growing epidemic worldwide, diabetes is an incurable disease. We have been focusing on why diabetes manifests refractoriness to any therapy. We recently found that abnormal bone marrow-derived cells (BMDCs), namely, Vcam-1+ST-HSCs, was a key mechanism for diabetic complications. We then hypothesize that those aberrant BMDCs sustainedly impair pancreatic β cells. Here we show that eliminating abnormal BMDCs using bone marrow transplantation results in controlling serum glucose in diabetic mice, in which normoglycemia is sustained even after cessation of insulin therapy. Alternatively, abnormal BMDCs exhibiting epigenetic alterations are treated with an HDAC inhibitor, givinostat, in diabetic mice. As a result, those mice are normoglycemic along with restored insulin secretion even following the cessation of both insulin and givinostat. Diabetic cell fusion between abnormal BMDCs and resident cells is significantly blocked by the combination therapy in the pancreatic islets and thymus while surgical ablation of the thymus completely eliminates therapeutic protection in diabetic mice. In conclusion, diabetes is an epigenetic stem cell disorder with thymic disturbances. The combination may be applied to patients aiming at complete remission from diabetes in clinical medicine.
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Grants
- No. 18390100 Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- No. 023590378 Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- No. 16K19051 Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- No. 16K15756 Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- No.1515503ZZE Shiga University of Medical Science (SUMS)
- No. 1515503 W Shiga University of Medical Science (SUMS)
- No. 1515503ZE Shiga University of Medical Science (SUMS)
- No. 1515503ZB Shiga University of Medical Science (SUMS)
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Affiliation(s)
- Hideto Kojima
- Department of Biocommunication Development, Shiga University of Medical Science, Otsu, Japan.
- Department of Regenerative Medicine Development, Shiga University of Medical Science, Otsu, Japan.
| | - Miwako Katagi
- Department of Biocommunication Development, Shiga University of Medical Science, Otsu, Japan
| | - Junko Okano
- Department of Plastic and Reconstructive Surgery, Shiga University of Medical Science, Otsu, Japan
| | - Yuki Nakae
- Department of Regenerative Medicine Development, Shiga University of Medical Science, Otsu, Japan
| | - Natsuko Ohashi
- Department of Medicine, Division of Diabetology, Endocrinology and Nephrology, Shiga University of Medical Science, Otsu, Japan
| | - Kazunori Fujino
- Department of Critical and Intensive Care Medicine, Shiga University of Medical Science, Otsu, Japan
| | - Itsuko Miyazawa
- Department of Education Center for Medicine and Nursing, Shiga University of Medical Science, Otsu, Japan
| | - Takahiko Nakagawa
- Department of Biocommunication Development, Shiga University of Medical Science, Otsu, Japan.
- Department of Regenerative Medicine Development, Shiga University of Medical Science, Otsu, Japan.
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9
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Mázala-de-Oliveira T, Jannini de Sá YAP, Carvalho VDF. Impact of gut-peripheral nervous system axis on the development of diabetic neuropathy. Mem Inst Oswaldo Cruz 2023; 118:e220197. [PMID: 36946851 PMCID: PMC10027071 DOI: 10.1590/0074-02760220197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 02/14/2023] [Indexed: 03/22/2023] Open
Abstract
Diabetes is a chronic metabolic disease caused by a reduction in the production and/or action of insulin, with consequent development of hyperglycemia. Diabetic patients, especially those who develop neuropathy, presented dysbiosis, with an increase in the proportion of pathogenic bacteria and a decrease in the butyrate-producing bacteria. Due to this dysbiosis, diabetic patients presented a weakness of the intestinal permeability barrier and high bacterial product translocation to the bloodstream, in parallel to a high circulating levels of pro-inflammatory cytokines such as TNF-α. In this context, we propose here that dysbiosis-induced increased systemic levels of bacterial products, like lipopolysaccharide (LPS), leads to an increase in the production of pro-inflammatory cytokines, including TNF-α, by Schwann cells and spinal cord of diabetics, being crucial for the development of neuropathy.
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Affiliation(s)
| | | | - Vinicius de Frias Carvalho
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Rio de Janeiro, RJ, Brasil
- Instituto Nacional de Ciência e Tecnologia em Neuroimunomodulação, Rio de Janeiro, RJ, Brasil
- + Corresponding author:
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10
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Liu XG. Normalization of Neuroinflammation: A New Strategy for Treatment of Persistent Pain and Memory/Emotional Deficits in Chronic Pain. J Inflamm Res 2022; 15:5201-5233. [PMID: 36110505 PMCID: PMC9469940 DOI: 10.2147/jir.s379093] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Accepted: 08/18/2022] [Indexed: 12/12/2022] Open
Abstract
Chronic pain, which affects around 1/3 of the world population and is often comorbid with memory deficit and mood depression, is a leading source of suffering and disability. Studies in past decades have shown that hyperexcitability of primary sensory neurons resulting from abnormal expression of ion channels and central sensitization mediated pathological synaptic plasticity, such as long-term potentiation in spinal dorsal horn, underlie the persistent pain. The memory/emotional deficits are associated with impaired synaptic connectivity in hippocampus. Dysregulation of numerous endogenous proteins including receptors and intracellular signaling molecules is involved in the pathological processes. However, increasing knowledge contributes little to clinical treatment. Emerging evidence has demonstrated that the neuroinflammation, characterized by overproduction of pro-inflammatory cytokines and glial activation, is reliably detected in humans and animals with chronic pain, and is sufficient to induce persistent pain and memory/emotional deficits. The abnormal expression of ion channels and pathological synaptic plasticity in spinal dorsal horn and in hippocampus are resulting from neuroinflammation. The neuroinflammation is initiated and maintained by the interactions of circulating monocytes, glial cells and neurons. Obviously, unlike infectious diseases and cancer, which are caused by pathogens or malignant cells, chronic pain is resulting from alterations of cells and molecules which have numerous physiological functions. Therefore, normalization (counterbalance) but not simple inhibition of the neuroinflammation is the right strategy for treating neuronal disorders. Currently, no such agent is available in clinic. While experimental studies have demonstrated that intracellular Mg2+ deficiency is a common feature of chronic pain in animal models and supplement Mg2+ are capable of normalizing the neuroinflammation, activation of upregulated proteins that promote recovery, such as translocator protein (18k Da) or liver X receptors, has a similar effect. In this article, relevant experimental and clinical evidence is reviewed and discussed.
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Affiliation(s)
- Xian-Guo Liu
- Pain Research Center and Department of Physiology, Zhongshan School of Medicine of Sun Yat-sen University, Guangzhou, People's Republic of China
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11
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Pérez-Martinez IO, Cifuentes-Mendiola SE, Solis-Suarez DL, García-Hernández AL. Moderate intensity aerobic training reduces the signs of peripheral sensitization in a mouse model of type 2 diabetes mellitus. Exp Brain Res 2022; 240:2747-2756. [PMID: 36063191 DOI: 10.1007/s00221-022-06453-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 08/27/2022] [Indexed: 11/27/2022]
Abstract
Type 2 diabetes mellitus (T2DM) is a global health problem for many reasons including the comorbidities, such as diabetic neuropathy (DPN), which is the most common. It has been suggested that aerobic training can improve metabolic health in individuals with T2DM. Still, the effect of aerobic training on DPN signs and its relationship with serum levels of tumor necrosis tumor alpha (TNF-α), an essential molecule in T2DM development, is unknown. We evaluated the effect of two intensities of aerobic training in adult male C57BL/6 mice divided into six groups: sedentary control (CTRL), control with low-intensity training (CTRL-LI), control with moderate-intensity training (CTRL-MI), T2DM sedentary (T2DM), T2DM with low-intensity training (T2DM-LI), and T2DM with moderate-intensity training (T2DM-MI). We induced the T2DM model by combining a hypercaloric diet and low doses of streptozotocin. We measured serum TNF-α levels and correlated them with peripheral sensitization and the cardinal signs of T2DM in mice. Moderate intensity aerobic training decreased the symptoms of DPN and improved metabolic health in T2DM. Interestingly, decreased TNF-α serum levels correlated with reduced peripheral thermal sensitivity and mechanical sensitivity by aerobic training. Moderate intensity aerobic training counteracts the development and symptoms of DPN and improve metabolic health in T2DM. Decreased TNF-α correlates with reduced peripheral thermal sensitivity and mechanical sensitivity by aerobic training.
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Affiliation(s)
- Isaac O Pérez-Martinez
- Sección de neurobiología de las Sensaciones y Movimientos orales, Laboratorio de Investigación Odontologica, Clínica Universitaria de Salud Integral Almaraz FES Iztacala, UNAM. Av. Jiménez Gallardo SN, San Sebastián Xhala, CP 54714, Cuautitlán Izcalli, Estado de México, México
| | - Saul E Cifuentes-Mendiola
- Sección de osteoinmunología e inmunidad oral, Laboratorio de investigación Odontológica, Clínica Universitaria de Salud Integral Almaraz FES Iztacala, UNAM. Av. Jiménez Gallardo SN, San Sebastián Xhala, CP 54714, Cuautitlán Izcalli, Estado de México, México
| | - Diana L Solis-Suarez
- Sección de osteoinmunología e inmunidad oral, Laboratorio de investigación Odontológica, Clínica Universitaria de Salud Integral Almaraz FES Iztacala, UNAM. Av. Jiménez Gallardo SN, San Sebastián Xhala, CP 54714, Cuautitlán Izcalli, Estado de México, México
| | - Ana L García-Hernández
- Sección de osteoinmunología e inmunidad oral, Laboratorio de investigación Odontológica, Clínica Universitaria de Salud Integral Almaraz FES Iztacala, UNAM. Av. Jiménez Gallardo SN, San Sebastián Xhala, CP 54714, Cuautitlán Izcalli, Estado de México, México.
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12
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Umbaugh DS, Maciejewski JC, Wooten JS, Guilford BL. Neuronal Inflammation is Associated with Changes in Epidermal Innervation in High Fat Fed Mice. Front Physiol 2022; 13:891550. [PMID: 36082224 PMCID: PMC9445198 DOI: 10.3389/fphys.2022.891550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 06/27/2022] [Indexed: 11/13/2022] Open
Abstract
Peripheral neuropathy (PN), a debilitating complication of diabetes, is associated with obesity and the metabolic syndrome in nondiabetic individuals. Evidence indicates that a high fat diet can induce signs of diabetic peripheral PN in mice but the pathogenesis of high fat diet-induced PN remains unknown. PURPOSE: Determine if neuronal inflammation is associated with the development of mechanical hypersensitivity and nerve fiber changes in high fat fed mice. METHODS: Male C57Bl/6 mice were randomized to a standard (Std, 15% kcal from fat) or high fat diet (HF, 54% kcal from fat) for 2, 4, or 8 weeks (n = 11-12 per group). Lumbar dorsal root ganglia were harvested and inflammatory mediators (IL-1α, IL-1β, IL-2, IL-3, IL-4, IL-5, IL-6, IL-10, IL-12p70, IL-17, MCP-1, IFN-γ, TNF-α, MIP-1α, GMCSF, RANTES) were quantified. Hindpaw mechanical sensitivity was assessed using the von Frey test. Intraepidermal nerve fiber density (IENFD) and TrkA nerve fiber density were quantified via immunohistochemistry. RESULTS: After 8 weeks, HF had greater body mass (33.3 ± 1.0 vs 26.7 ± 0.5 g, p < 0.001), fasting blood glucose (160.3 ± 9.4 vs 138.5 ± 3.4 mg/dl, p < 0.05) and insulin (3.58 ± 0.46 vs 0.82 ± 0.14 ng/ml, p < 0.001) compared to Std. IL-1α, RANTES and IL-5 were higher in HF compared to Std after 2 and 4 weeks, respectively (IL-1α: 4.8 ± 1.3 vs 2.9 ± 0.6 pg/mg, p < 0.05; RANTES: 19.6 ± 2.2 vs 13.3 ± 1.2 pg/mg p < 0.05; IL-5: 5.8 ± 0.7 vs 3.1 ± 0.5 pg/mg, p < 0.05). IENFD and TrkA fiber density were also higher in HF vs Std after 4 weeks (IENFD: 39.4 ± 1.2 vs 32.2 ± 1.3 fibers/mm, p < 0.001; TrkA: 30.4 ± 1.8 vs 22.4 ± 1.3 fibers/mm). There were no significant differences in hindpaw sensitivity for Std vs HF. CONCLUSION: Increased inflammatory mediators preceded and accompanied an increase in cutaneous pain sensing nerve fibers in high fat fed mice but was not accompanied by significant mechanical allodynia. Diets high in fat may increase neuronal inflammation and lead to increased nociceptive nerve fiber density.
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Affiliation(s)
| | | | | | - Brianne L. Guilford
- Department of Applied Health, Southern Illinois University Edwardsville, Edwardsville, IL, United States
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13
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Neuritin Promotes Bone Marrow-Derived Mesenchymal Stem Cell Migration to Treat Diabetic Peripheral Neuropathy. Mol Neurobiol 2022; 59:6666-6683. [DOI: 10.1007/s12035-022-03002-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 08/16/2022] [Indexed: 10/15/2022]
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14
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Rahimi G, Mohammad KS, Zarei M, Shokoohi M, Oskoueian E, Poorbagher MRM, Karimi E. Zinc oxide nanoparticles synthesized using Hyssopus Officinalis L. Extract Induced oxidative stress and changes the expression of key genes involved in inflammatory and antioxidant Systems. Biol Res 2022; 55:24. [PMID: 35765116 PMCID: PMC9238176 DOI: 10.1186/s40659-022-00392-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 06/04/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Recent advances in the synthesis of bioactive nanoparticles resulted in the discovery and introduction of new bioactive nanoparticles to the pharmaceutical industry. In this regard, this research is aimed to synthesize the zinc oxide nanoparticles (ZnO-NPs) using Hyssopus officinalis L. extract and to evaluate the safety of nanoparticles using Balb/C mice. METHODS Forty male mice were divided into four groups and received 0, 50, 100, and 200 mg/kg of ZnO-NPs for thirty days. At the end of the experiment, blood sugar, creatinine, aspartate aminotransferase (A.S.T.), and alanine aminotransferase (A.L.T.) were determined. Furthermore, histopathological and oxidative stress biomarker analyses in liver and kidney tissues were performed. The changes in the major inflammatory- and antioxidant-related genes were determined. RESULTS The results showed that blood sugar and creatinine reduced significantly (P < 0.05) when 50, 100, and 200 mg/kg ZnO-NPs were supplemented to the diet. The serum ALT and AST and lipid peroxidation in the liver and kidney tissues were increased significantly (p < 0.05) when 50, 100, and 200 mg/kg ZnO-NPs were supplemented to the diet. Supplementation of ZnO-NPs suppressed the expression of antioxidant-related genes (SOD and CAT) and up-regulated the inflammatory biomarkers (iNOS and TNF- α). The concentration of 200 mg/Kg nanoparticles indicated cellular degeneration and necrosis in the liver and kidney tissues. CONCLUSIONS Overall, it can be concluded that supplementation of ZnO-NPs synthesized using Hyssopus Officinalis L. extract in this study at 50 mg/kg or higher concentrations might be toxic to the mice.
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Affiliation(s)
- Ghasem Rahimi
- Department of Biology, Mashhad Branch, Islamic Azad University, Mashhad, Iran
| | | | - Mahsa Zarei
- Department of Biology, Mashhad Branch, Islamic Azad University, Mashhad, Iran
| | - Mohammad Shokoohi
- Department of Biology, Faculty of Sciences, Hakim Sabzevari University, Sabzevar, Iran
| | - Ehsan Oskoueian
- Department of Research and Development, Arka Industrial Cluster, Mashhad, Iran.
| | | | - Ehsan Karimi
- Department of Biology, Mashhad Branch, Islamic Azad University, Mashhad, Iran.
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15
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Ashjari D, Karamali N, Rajabinejad M, Hassani SS, Afshar Hezarkhani L, Afshari D, Gorgin Karaji A, Salari F, Rezaiemanesh A. The axis of long non-coding RNA MALAT1/miR-1-3p/CXCR4 is dysregulated in patients with diabetic neuropathy. Heliyon 2022; 8:e09178. [PMID: 35368523 PMCID: PMC8969120 DOI: 10.1016/j.heliyon.2022.e09178] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Revised: 12/28/2021] [Accepted: 03/18/2022] [Indexed: 01/02/2023] Open
Abstract
Background Diabetic neuropathy (DN) is a prevalent complication of diabetes mellitus characterized by pain and inflammation. Long non-coding RNAs (lncRNAs) have been associated with DN. This study aimed to investigate transcript levels of Metastasis-associated lung adenocarcinoma transcript 1 (MALAT1), microRNA (miR)-1-3p, and C-X-C motif chemokine receptor 4 (CXCR4) in the DN patients and type 2 diabetes mellitus (T2DM) cases without neuropathy. Methods Here, 20 cases with DN and 20 T2DM subjects without neuropathy (as the control group) were included. Total RNA was extracted from peripheral blood mononuclear cells (PBMCs) of all participants. The expression levels of targets were evaluated by Real-time-PCR. Results Results showed that MALAT1 (Fold change = 2.47, P = 0.03) and CXCR4 (Fold change = 1.65, P = 0.023) were significantly upregulated, while miR-1-3p was downregulated (Fold change = 0.9, P = 0.028) in whole blood samples from DN patients compared to the control group. A significant correlation was found between transcript levels of MALAT1 and CXCR4 (rho = 0.84; P < 0.0001). Conclusions This study suggests a possible involvement of the MALAT1/miR-1-3p/CXCR4 axis in the pathogenesis of DN.
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Affiliation(s)
- Donya Ashjari
- Student Research Committee, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran.,Department of Immunology, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Negin Karamali
- Student Research Committee, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran.,Department of Immunology, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Misagh Rajabinejad
- Student Research Committee, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran.,Department of Immunology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Seyedeh Sara Hassani
- Student Research Committee, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran.,Department of Immunology, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Leila Afshar Hezarkhani
- Department of Neurology, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Daryoush Afshari
- Department of Neurology, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Ali Gorgin Karaji
- Department of Immunology, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Farhad Salari
- Department of Immunology, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Alireza Rezaiemanesh
- Department of Immunology, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
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16
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Singleton JR, Foster-Palmer S, Marcus RL. Exercise as Treatment for Neuropathy in the Setting of Diabetes and Prediabetic Metabolic Syndrome: A Review of Animal Models and Human Trials. Curr Diabetes Rev 2022; 18:e230921196752. [PMID: 34561989 DOI: 10.2174/1573399817666210923125832] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 01/21/2021] [Accepted: 05/17/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Peripheral neuropathy is among the most common complications of diabetes, but a phenotypically identical distal sensory predominant, painful axonopathy afflicts patients with prediabetic metabolic syndrome, exemplifying a spectrum of risk and continuity of pathogenesis. No pharmacological treatment convincingly improves neuropathy in the setting of metabolic syndrome, but evolving data suggest that exercise may be a promising alternative. OBJECTIVE The aim of the study was to review in depth the current literature regarding exercise treatment of metabolic syndrome neuropathy in humans and animal models, highlight the diverse mechanisms by which exercise exerts beneficial effects, and examine adherence limitations, safety aspects, modes and dose of exercise. RESULTS Rodent models that recapitulate the organismal milieu of prediabetic metabolic syndrome and the phenotype of its neuropathy provide a strong platform to dissect exercise effects on neuropathy pathogenesis. In these models, exercise reverses hyperglycemia and consequent oxidative and nitrosative stress, improves microvascular vasoreactivity, enhances axonal transport, ameliorates the lipotoxicity and inflammatory effects of hyperlipidemia and obesity, supports neuronal survival and regeneration following injury, and enhances mitochondrial bioenergetics at the distal axon. Prospective human studies are limited in scale but suggest exercise to improve cutaneous nerve regenerative capacity, neuropathic pain, and task-specific functional performance measures of gait and balance. Like other heath behavioral interventions, the benefits of exercise are limited by patient adherence. CONCLUSION Exercise is an integrative therapy that potently reduces cellular inflammatory state and improves distal axonal oxidative metabolism to ameliorate features of neuropathy in metabolic syndrome. The intensity of exercise need not improve cardinal features of metabolic syndrome, including weight, glucose control, to exert beneficial effects.
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Affiliation(s)
| | | | - Robin L Marcus
- Department Physical Therapy and Athletic Training, University of Utah, UT, United States
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17
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Meling S, Bertoli D, Sangnes DA, Brock C, Drewes A, Ejskjaer N, Dimcevski G, Søfteland E. Diabetic Gastroenteropathy: Soothe the Symptoms or Unravel a Cure? Curr Diabetes Rev 2022; 18:e220321192412. [PMID: 34225633 DOI: 10.2174/1573399817666210322154618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 01/19/2021] [Accepted: 02/13/2021] [Indexed: 11/22/2022]
Abstract
Autonomic neuropathy in patients with diabetes mellitus, and especially complications related to gastrointestinal neuropathy, are often overlooked in the clinic. Diabetic gastroenteropathy affects every segment of the gastrointestinal tract and generates symptoms that may include nausea, early satiety, vomiting, abdominal pain, constipation, and diarrhea. Severe cases can be complicated by weight loss, dehydration, and electrolyte disturbances. The pathophysiology is complex, the diagnostics and treatment options are multidisciplinary, and there is generally a lack of evidence for the treatment options. The aims for this review are first to summarize the pathophysiology and describe possible and expected symptoms and complications.Further, we will try to supply the clinician with a straightforward tool for diagnostics, and then, we shall summarize established treatment options, including diet recommendations, pharmacological and non-pharmacological options. Finally, we will explore the multiple possibilities of novel treatment, looking at medications related to the pathophysiology of neuropathy, other manifestations of autonomic neuropathies, and symptomatic treatment for other gastrointestinal disorders, also including new knowledge of endosurgical and neuromodulatory treatment. The overall goal is to increase awareness and knowledge on this frequent diabetic complication and to provide better tools for diagnosis and treatment. Ultimately, we hope to encourage further research in this field, as there are clear shortcomings in terms of biomarkers, pathophysiology, as well as treatment possibilities. In conclusion, diagnosis and management of diabetic gastroenteropathy are challenging and often require multidisciplinary teams and multimodal therapies. Treatment options are sparse, but new pharmacological, endoscopic, and neuromodulatory techniques have shown promising results in initial studies.
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Affiliation(s)
- Sondre Meling
- Department of Medicine, Stavanger University Hospital, Stavanger, Norway
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Davide Bertoli
- Department of Gastroenterology and Hepatology, Aalborg University Hospital, Aalborg, Denmark
| | - Dag A Sangnes
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
- Department of Medicine, Haukeland University Hospital, Bergen, Norway
| | - Christina Brock
- Department of Gastroenterology and Hepatology, Aalborg University Hospital, Aalborg, Denmark
- Steno Diabetes Center North Jutland, Aalborg, Denmark
| | - Asbjørn Drewes
- Department of Gastroenterology and Hepatology, Aalborg University Hospital, Aalborg, Denmark
- Steno Diabetes Center North Jutland, Aalborg, Denmark
| | - Niels Ejskjaer
- Steno Diabetes Center North Jutland, Aalborg, Denmark
- Department of Clinical Medicine and Endocrinology, Aalborg University Hospital, Aalborg, Denmark
| | - Georg Dimcevski
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Eirik Søfteland
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
- Department of Medicine, Haukeland University Hospital, Bergen, Norway
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18
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Ji WH, Li DD, Wei DP, Gu AQ, Yang Y, Peng JP. Cytochrome P450 26A1 Modulates the Polarization of Uterine Macrophages During the Peri-Implantation Period. Front Immunol 2021; 12:763067. [PMID: 34712245 PMCID: PMC8546204 DOI: 10.3389/fimmu.2021.763067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 09/27/2021] [Indexed: 02/02/2023] Open
Abstract
Uterine M1/M2 macrophages activation states undergo dynamic changes throughout pregnancy, and inappropriate macrophages polarization can cause adverse pregnancy outcomes, especially during the peri-implantation period. Our previous studies have confirmed that Cytochrome P450 26A1 (CYP26A1) can affect embryo implantation by regulating uterine NK cells and DCs. The aim of this study was to investigate whether CYP26A1 regulates the polarization of uterine macrophages in early pregnancy. Here, we observed that Cyp26a1 was significantly upregulated in M1 as compared with M2 of uterine macrophages, Raw264.7 and iBMDM. Knockdown of CYP26A1 in mice uterine significantly decreased the number of embryo implantation sites and the proportion of CD45+F4/80+CD206− M1-like uterine macrophages. Primary uterine macrophages treated with anti-CYP26A1 antibody expressed significantly lower levels of M1 markers Nos2, Il1b, Il6 and Tnf-a. In CYP26A1 knockout Raw264.7 cells, the protein levels of M1 markers TNF-α, IL-6 and CD86 were significantly decreased as compared with the wild type cells. Moreover, CYP26A1 deficiency decreased the ability to produce nitric oxide and increased the phagocytosis capacity of Raw264.7 cells under M1 stimulation state. The re-introduction of CYP26A1 partially reversed the polarization levels of M1 in CYP26A1 knockout Raw264.7 cells. CYP26A1 may regulate the polarization of uterine macrophages to M1 through Stap1 and Slc7a2. In summary, these results indicate that CYP26A1 plays a significant role in macrophage polarization, and knockdown of CYP26A1 can cause insufficient M1 polarization during the peri-implantation period, which has adverse effects on blastocyst implantation.
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Affiliation(s)
- Wen-Heng Ji
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Dan-Dan Li
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Dan-Ping Wei
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Ai-Qin Gu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Ying Yang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Jing-Pian Peng
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
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19
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Xue T, Zhang X, Xing Y, Liu S, Zhang L, Wang X, Yu M. Advances About Immunoinflammatory Pathogenesis and Treatment in Diabetic Peripheral Neuropathy. Front Pharmacol 2021; 12:748193. [PMID: 34671261 PMCID: PMC8520901 DOI: 10.3389/fphar.2021.748193] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 09/20/2021] [Indexed: 12/13/2022] Open
Abstract
Most diabetic patients develop diabetic peripheral neuropathy (DPN). DPN is related to the increase of inflammatory cells in peripheral nerves, abnormal cytokine expression, oxidative stress, ischemia ,and pro-inflammatory changes in bone marrow. We summarized the progress of immune-inflammatory mechanism and treatment of DPN in recent years. Immune inflammatory mechanisms include TNF-α, HSPs, PARP, other inflammatory factors, and the effect of immune cells on DPN. Treatment includes tricyclic antidepressants and other drug therapy, immune and molecular therapy, and non-drug therapy such as exercise therapy, electrotherapy, acupuncture, and moxibustion. The pathogenesis of DPN is complex. In addition to strictly controlling blood glucose, its treatment should also start from other ways, explore more effective and specific treatment schemes for various causes of DPN, and find new targets for treatment will be the direction of developing DPN therapeutic drugs in the future.
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Affiliation(s)
- Tianyu Xue
- Department of Neurology, The Third People's Hospital of Dalian, Non-Directly Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Xin Zhang
- Department of Neurology, The Third People's Hospital of Dalian, Non-Directly Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Yiwen Xing
- Department of Neurology, The Third People's Hospital of Dalian, Non-Directly Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Shuhan Liu
- Department of Neurology, The Third People's Hospital of Dalian, Non-Directly Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Lijun Zhang
- Department of Ophthalmology, The Third People's Hospital of Dalian, Non-Directly Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Xun Wang
- Department of Neurosurgery, The Third People's Hospital of Dalian, Non-Directly Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Min Yu
- Department of Neurology, The Third People's Hospital of Dalian, Non-Directly Affiliated Hospital of Dalian Medical University, Dalian, China
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20
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Luna R, Talanki Manjunatha R, Bollu B, Jhaveri S, Avanthika C, Reddy N, Saha T, Gandhi F. A Comprehensive Review of Neuronal Changes in Diabetics. Cureus 2021; 13:e19142. [PMID: 34868777 PMCID: PMC8628358 DOI: 10.7759/cureus.19142] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/30/2021] [Indexed: 12/11/2022] Open
Abstract
There has been an exponential rise in diabetes mellitus (DM) cases on a global scale. Diabetes affects almost every system of the body, and the nervous system is no exception. Although the brain is dependent on glucose, providing it with the energy required for optimal functionality, glucose also plays a key role in the regulation of oxidative stress, cell death, among others, which furthermore contribute to the pathophysiology of neurological disorders. The variety of biochemical processes engaged in this process is only matched by the multitude of clinical consequences resulting from it. The wide-ranging effects on the central and peripheral nervous system include, but are not limited to axonopathies, neurodegenerative diseases, neurovascular diseases, and general cognitive impairment. All language search was conducted on MEDLINE, COCHRANE, EMBASE, and GOOGLE SCHOLAR till September 2021. The following search strings and Medical Subject Headings (MeSH terms) were used: "Diabetes Mellitus," "CNS," "Diabetic Neuropathy," and "Insulin." We explored the literature on diabetic neuropathy, covering its epidemiology, pathophysiology with the respective molecular pathways, clinical consequences with a special focus on the central nervous system and finally, measures to prevent and treat neuronal changes. Diabetes is slowly becoming an epidemic, rapidly increasing the clinical burden on account of its wide-ranging complications. This review focuses on the neuronal changes occurring in diabetes such as the impact of hyperglycemia on brain function and structure, its association with various neurological disorders, and a few diabetes-induced peripheral neuropathic changes. It is an attempt to summarize the relevant literature about neuronal consequences of DM as treatment options available today are mostly focused on achieving better glycemic control; further research on novel treatment options to prevent or delay the progression of neuronal changes is still needed.
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Affiliation(s)
- Rudy Luna
- Neurofisiología, Instituto Nacional de Neurologia y Neurocirugia, CDMX, MEX
| | | | | | | | - Chaithanya Avanthika
- Medicine and Surgery; Pediatrics, Karnataka Institute of Medical Sciences, Hubli, IND
| | - Nikhil Reddy
- Internal Medicine, Kamineni Academy of Medical Science and Research Centre, Hyderabad, IND
| | - Tias Saha
- Internal Medicine, Diabetic Association Medical College, Faridpur, BGD
| | - Fenil Gandhi
- Medicine, Shree Krishna Hospital, Anand, IND
- Research Project Associate, Memorial Sloan Kettering Cancer Center, New York, USA
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21
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Seribelli AA, Ribeiro TRM, da Silva P, Martins IM, Vilela FP, Medeiros MIC, Peronni KC, da Silva Junior WA, Moreira CG, Falcão JP. Salmonella Typhimurium ST313 isolated in Brazil revealed to be more invasive and inflammatory in murine colon compared to ST19 strains. J Microbiol 2021; 59:861-870. [PMID: 34382146 DOI: 10.1007/s12275-021-1082-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 05/12/2021] [Accepted: 07/06/2021] [Indexed: 11/25/2022]
Abstract
Salmonella Typhimurium (ST313) has caused an epidemic of invasive disease in sub-Saharan Africa and has been recently identified in Brazil. As the virulence of this ST is poorly understood, the present study aimed to (i) perform the RNA-seq in vitro of S. Typhimurium STm30 (ST313) grown in Luria-Bertani medium at 37°C; (ii) compare it with the RNA-seq of the S. Typhimurium SL1344 (ST19) and S. Typhimurium STm11 (ST19) strains under the same growing conditions; and (iii) examine the colonization capacity and expression of virulence genes and cytokines in murine colon. The STm30 (ST313) strain exhibited stronger virulence and was associated with a more inflammatory profile than the strains SL1344 (ST19) and STm11 (ST19), as demonstrated by transcriptome and in vivo assay. The expression levels of the hilA, sopD2, pipB, and ssaS virulence genes, other Salmonella pathogenicity islands SPI-1 and SPI-2 genes or effectors, and genes of the cytokines IL-1β, IFN-γ, TNF-α, IL-6, IL-17, IL-22, and IL-12 were increased during ST313 infection in C57BL/6J mice. In conclusion, S. Typhimurium STm30 (ST313) isolated from human feces in Brazil express higher levels of pathogenesis-related genes at 37°C and has stronger colonization and invasion capacity in murine colon due to its high expression levels of virulence genes, when compared with the S. Typhimurium SL1344 (ST19) and STm11 (ST19) strains. STm30 (ST313) also induces stronger expression of pro-inflammatory cytokines in this organ, suggesting that it causes more extensive tissue damage.
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Affiliation(s)
- Amanda Aparecida Seribelli
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, 05508-220, Brazil
| | - Tamara R Machado Ribeiro
- Department of Biological Sciences, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, 01049-010, Brazil
| | - Patrick da Silva
- Department of Biological Sciences, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, 01049-010, Brazil
| | - Isabela Mancini Martins
- Department of Biological Sciences, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, 01049-010, Brazil
| | - Felipe Pinheiro Vilela
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, 05508-220, Brazil
| | | | - Kamila Chagas Peronni
- Regional Blood Center of the University Hospital of the Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, 05508-220, Brazil
| | - Wilson Araújo da Silva Junior
- Regional Blood Center of the University Hospital of the Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, 05508-220, Brazil
- Ribeirão Preto Medical School, Genetics Department, University of São Paulo, Ribeirão Preto, São Paulo, 05508-220, Brazil
| | - Cristiano Gallina Moreira
- Department of Biological Sciences, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, 01049-010, Brazil.
| | - Juliana Pfrimer Falcão
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, 05508-220, Brazil.
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O'Brien JA, McGuire HM, Shinko D, Fazekas de St Groth B, Russo MA, Bailey D, Santarelli DM, Wynne K, Austin PJ. T lymphocyte and monocyte subsets are dysregulated in type 1 diabetes patients with peripheral neuropathic pain. Brain Behav Immun Health 2021; 15:100283. [PMID: 34589782 PMCID: PMC8474166 DOI: 10.1016/j.bbih.2021.100283] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 05/31/2021] [Accepted: 06/04/2021] [Indexed: 12/19/2022] Open
Abstract
Diabetic neuropathic pain is a common and devastating complication of type 1 diabetes, but the mechanism by which it develops and persists is yet to be fully elucidated. This study utilised high-dimensional suspension mass cytometry in a pilot cohort to investigate differences in peripheral blood immunophenotypes between type 1 diabetes patients with (n = 9) and without (n = 9) peripheral neuropathic pain. The abundance and activation of several leukocyte subsets were investigated with unsupervised clustering approaches FlowSOM and SPADE, as well as by manual gating. Major findings included a proportional increase in CD4+ central memory T cells and an absolute increase in classical monocytes, non-classical monocytes, and mature natural killer cells in type 1 diabetes patients with pain compared to those without pain. The expression of CD27, CD127, and CD39 was upregulated on select T cell populations, and the phosphorylated form of pro-inflammatory transcription factor MK2 was upregulated across most populations. These results provide evidence that distinct immunological signatures are associated with painful neuropathy in type 1 diabetes patients. Further research may link these changes to mechanisms by which pain in type 1 diabetes is initiated and maintained, paving the way for much needed targeted treatments.
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Affiliation(s)
- Jayden A. O'Brien
- School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Brain and Mind Centre, 94 Mallett St, Camperdown, NSW, 2050, Australia
| | - Helen M. McGuire
- Discipline of Pathology, Faculty of Medicine and Health, The University of Sydney, NSW, Australia
- Ramaciotti Facility for Human Systems Biology, Charles Perkins Centre, The University of Sydney, NSW, Australia
| | - Diana Shinko
- Ramaciotti Facility for Human Systems Biology, Charles Perkins Centre, The University of Sydney, NSW, Australia
- Sydney Cytometry, The University of Sydney, NSW, Australia
| | - Barbara Fazekas de St Groth
- Discipline of Pathology, Faculty of Medicine and Health, The University of Sydney, NSW, Australia
- Ramaciotti Facility for Human Systems Biology, Charles Perkins Centre, The University of Sydney, NSW, Australia
| | - Marc A. Russo
- Genesis Research Services, Broadmeadow, NSW, Australia
| | - Dominic Bailey
- Genesis Research Services, Broadmeadow, NSW, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | | | - Katie Wynne
- Department of Diabetes and Endocrinology, John Hunter Hospital, Newcastle, NSW, Australia
- School of Medicine and Public Health, University of Newcastle, NSW, Australia
| | - Paul J. Austin
- School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Brain and Mind Centre, 94 Mallett St, Camperdown, NSW, 2050, Australia
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23
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Wan S, Wan S, Jiao X, Cao H, Gu Y, Yan L, Zheng Y, Niu P, Shao F. Advances in understanding the innate immune-associated diabetic kidney disease. FASEB J 2021; 35:e21367. [PMID: 33508160 DOI: 10.1096/fj.202002334r] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 12/16/2020] [Accepted: 12/28/2020] [Indexed: 12/26/2022]
Abstract
Millions of human deaths occur annually due to chronic kidney disease, caused by diabetic kidney disease (DKD). Despite having effective drugs controlling the hyperglycemia and high blood pressure, the incidence of DKD is increasing, which indicates the need for the development of novel therapies to control DKD. In this article, we discussed the recent advancements in the basic innate immune mechanisms in renal tissues triggered under the diabetes environment, leading to the pathogenesis and progression of DKD. We also summarized the currently available innate immune molecules-targeting therapies tested against DKD in clinical and preclinical settings, and highlighted additional drug targets that could potentially be employed for the treatment of DKD. The improved understanding of the disease pathogenesis may open avenues for the development of novel therapies to rein in DKD, which consequently, can reduce morbidity and mortality in humans in the future.
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Affiliation(s)
- Shengfeng Wan
- Department of Nephrology, Henan Provincial Key Laboratory of Kidney Disease and Immunology, Henan Provincial People's Hospital (Zhengzhou University People's Hospital), Zhengzhou, China
| | - Shengkai Wan
- Department of Operations Management, Henan Provincial People's Hospital (Zhengzhou University People's Hospital), Zhengzhou, China
| | - Xiaojing Jiao
- Department of Nephrology, Henan Provincial Key Laboratory of Kidney Disease and Immunology, Henan Provincial People's Hospital (Zhengzhou University People's Hospital), Zhengzhou, China
| | - Huixia Cao
- Department of Nephrology, Henan Provincial Key Laboratory of Kidney Disease and Immunology, Henan Provincial People's Hospital (Zhengzhou University People's Hospital), Zhengzhou, China
| | - Yue Gu
- Department of Nephrology, Henan Provincial Key Laboratory of Kidney Disease and Immunology, Henan Provincial People's Hospital (Zhengzhou University People's Hospital), Zhengzhou, China
| | - Lei Yan
- Department of Nephrology, Henan Provincial Key Laboratory of Kidney Disease and Immunology, Henan Provincial People's Hospital (Zhengzhou University People's Hospital), Zhengzhou, China
| | - Yan Zheng
- Department of Nephrology, Henan Provincial Key Laboratory of Kidney Disease and Immunology, Henan Provincial People's Hospital (Zhengzhou University People's Hospital), Zhengzhou, China
| | - Peiyuan Niu
- Department of Nephrology, Henan Provincial Key Laboratory of Kidney Disease and Immunology, Henan Provincial People's Hospital (Zhengzhou University People's Hospital), Zhengzhou, China
| | - Fengmin Shao
- Department of Nephrology, Henan Provincial Key Laboratory of Kidney Disease and Immunology, Henan Provincial People's Hospital (Zhengzhou University People's Hospital), Zhengzhou, China
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Malfunctioning CD106-positive, short-term hematopoietic stem cells trigger diabetic neuropathy in mice by cell fusion. Commun Biol 2021; 4:575. [PMID: 33990693 PMCID: PMC8121918 DOI: 10.1038/s42003-021-02082-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 03/25/2021] [Indexed: 12/16/2022] Open
Abstract
Diabetic neuropathy is an incurable disease. We previously identified a mechanism by which aberrant bone marrow-derived cells (BMDCs) pathologically expressing proinsulin/TNF-α fuse with residential neurons to impair neuronal function. Here, we show that CD106-positive cells represent a significant fraction of short-term hematopoietic stem cells (ST-HSCs) that contribute to the development of diabetic neuropathy in mice. The important role for these cells is supported by the fact that transplantation of either whole HSCs or CD106-positive ST-HSCs from diabetic mice to non-diabetic mice produces diabetic neuronal dysfunction in the recipient mice via cell fusion. Furthermore, we show that transient episodic hyperglycemia produced by glucose injections leads to abnormal fusion of pathological ST-HSCs with residential neurons, reproducing neuropathy in nondiabetic mice. In conclusion, we have identified hyperglycemia-induced aberrant CD106-positive ST-HSCs underlie the development of diabetic neuropathy. Aberrant CD106-positive ST-HSCs constitute a novel therapeutic target for the treatment of diabetic neuropathy. Katagi et al. show that abnormal bone marrow-derived cells originated from hematopoietic stem cells (CD106-positive short-term HSCs) aberrantly fuse with neurons to develop diabetic neuropathy. This study suggests that the pathological abnormality is memorized in the bone marrow and that it cannot be erased by conventional therapy.
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Hagen KM, Ousman SS. Aging and the immune response in diabetic peripheral neuropathy. J Neuroimmunol 2021; 355:577574. [PMID: 33894676 DOI: 10.1016/j.jneuroim.2021.577574] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 04/09/2021] [Accepted: 04/10/2021] [Indexed: 12/27/2022]
Abstract
A large proportion of older individuals with diabetes go on to develop diabetic peripheral neuropathy (DPN). DPN is associated with an increase in inflammatory cells within the peripheral nerve, activation of nuclear factor kappa-light-chain-enhancer of activated B cells and receptors for advanced glycation end products/advanced glycation end products pathways, aberrant cytokine expression, oxidative stress, ischemia, as well as pro-inflammatory changes in the bone marrow; all processes that may be exacerbated with age. We review the immunological features of DPN and discuss whether age-related changes in relevant immunological areas may contribute to age being a risk factor for DPN.
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Affiliation(s)
- Kathleen M Hagen
- Department of Neuroscience, Hotchkiss Brain Institute, University of Calgary, Calgary, AB T2N 4N1, Canada
| | - Shalina S Ousman
- Departments of Clinical Neurosciences and Cell Biology and Anatomy, Hotchkiss Brain Institute, University of Calgary, Calgary, AB T2N 4N1, Canada.
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26
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Yoshiyama Y, Sugiyama Y, Ishida K, Fuseya S, Tanaka S, Kawamata M. Plantar incision with severe muscle injury can be a cause of long-lasting postsurgical pain in the skin. Life Sci 2021; 275:119389. [PMID: 33774031 DOI: 10.1016/j.lfs.2021.119389] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 03/19/2021] [Accepted: 03/23/2021] [Indexed: 12/30/2022]
Abstract
AIMS Although chronic local inflammation in deeper tissues after skin wound healing might produce chronification of acute postsurgical pain, its mechanisms have not been fully elucidated. We hypothesized that muscle injury and severe inflammation would prolong acute postsurgical pain by its central nervous system mechanisms. MAIN METHODS After approval of the Animal Care Committee, experiments were performed in Male Sprague-Dawley rats weighing 250-300 g. Plantar incision and plantar incision combined with cryoinjury of the plantar flexor digitorum brevis muscle were made in the plantar incision group and muscle injury group, respectively. Pain-related behaviors were assessed, and inflammatory cells were isolated from injured muscle and analyzed by flow cytometry. Spinal microglial activation was assessed with Iba-1 staining. KEY FINDINGS Mechanical hyperalgesia from day 5 to day 8 and spontaneous pain-related behavior from day 3 to day 7 were significantly greater in the muscle injury group than in the plantar incision group (P < 0.05), whereas there was no significant difference between the two groups in thermal hyperalgesia. In the muscle injury group, the number of inflammatory cells on day 4 was significantly larger and spinal Iba-1 expression levels on days 4 and 7 were significantly higher than those in the plantar incision group (P < 0.05). SIGNIFICANCE Surgical injury in deep tissues accompanying severe muscle inflammation induced prolonged postsurgical pain in the healing wound of the skin not by the persistence of muscle inflammation but by a central mechanism involving microglial activation at the level of the spinal cord.
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Affiliation(s)
- Yuki Yoshiyama
- Department of Anesthesiology and Resuscitology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Yuki Sugiyama
- Department of Anesthesiology and Resuscitology, Shinshu University School of Medicine, Matsumoto, Japan.
| | - Kumiko Ishida
- Department of Anesthesiology and Resuscitology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Satoshi Fuseya
- Department of Anesthesiology and Resuscitology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Satoshi Tanaka
- Department of Anesthesiology and Resuscitology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Mikito Kawamata
- Department of Anesthesiology and Resuscitology, Shinshu University School of Medicine, Matsumoto, Japan
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Abstract
Neuropathy is a common complication of long-term diabetes that impairs quality of life by producing pain, sensory loss and limb amputation. The presence of neuropathy in both insulin-deficient (type 1) and insulin resistant (type 2) diabetes along with the slowing of progression of neuropathy by improved glycemic control in type 1 diabetes has caused the majority of preclinical and clinical investigations to focus on hyperglycemia as the initiating pathogenic lesion. Studies in animal models of diabetes have identified multiple plausible mechanisms of glucotoxicity to the nervous system including post-translational modification of proteins by glucose and increased glucose metabolism by aldose reductase, glycolysis and other catabolic pathways. However, it is becoming increasingly apparent that factors not necessarily downstream of hyperglycemia can also contribute to the incidence, progression and severity of neuropathy and neuropathic pain. For example, peripheral nerve contains insulin receptors that transduce the neurotrophic and neurosupportive properties of insulin, independent of systemic glucose regulation, while the detection of neuropathy and neuropathic pain in patients with metabolic syndrome and failure of improved glycemic control to protect against neuropathy in cohorts of type 2 diabetic patients has placed a focus on the pathogenic role of dyslipidemia. This review provides an overview of current understanding of potential initiating lesions for diabetic neuropathy and the multiple downstream mechanisms identified in cell and animal models of diabetes that may contribute to the pathogenesis of diabetic neuropathy and neuropathic pain.
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28
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Lin Y, Shen C, Wang F, Fang Z, Shen G. Network Pharmacology and Molecular Docking Study on the Potential Mechanism of Yi-Qi-Huo-Xue-Tong-Luo Formula in Treating Diabetic Peripheral Neuropathy. J Diabetes Res 2021; 2021:9941791. [PMID: 34159207 PMCID: PMC8188603 DOI: 10.1155/2021/9941791] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 04/27/2021] [Accepted: 05/08/2021] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVE To investigate the potential mechanism of action of Yi-Qi-Huo-Xue-Tong-Luo formula (YQHXTLF) in the treatment of diabetic peripheral neuropathy (DPN). METHODS Network pharmacology and molecular docking techniques were used in this study. Firstly, the active ingredients and the corresponding targets of YQHXTLF were retrieved using the Traditional Chinese Medicine Systems Pharmacology (TCMSP) platform; subsequently, the targets related to DPN were retrieved using GeneCards, Online Mendelian Inheritance in Man (OMIM), Pharmgkb, Therapeutic Target Database (TTD) and Drugbank databases; the common targets of YQHXTLF and DPN were obtained by Venn diagram; afterwards, the "YQHXTLF Pharmacodynamic Component-DPN Target" regulatory network was visualized using Cytoscape 3.6.1 software, and Gene Ontology (GO) enrichment analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis were performed on the potential targets using R 3.6.3 software. Finally, molecular docking of the main chemical components in the PPI network with the core targets was verified by Autodock Vina software. RESULTS A total of 86 active ingredients and 229 targets in YQHXTLF were screened, and 81 active ingredients and 110 targets were identified to be closely related to diabetic peripheral neuropathy disease. PPI network mapping identified TP53, MAPK1, JUN, and STAT3 as possible core targets. KEGG pathway analysis showed that these targets are mostly involved in AGE-RAGE signaling pathway in diabetic complications, TNF signaling pathway, and MAPK signaling pathway. The molecular docking results showed that the main chemical components of YQHXTLF have a stable binding activity to the core pivotal targets. CONCLUSION YQHXTLF may act on TP53, MAPK1, JUN, and STAT3 to regulate inflammatory response, apoptosis, or proliferation as a molecular mechanism for the treatment of diabetic peripheral neuropathy, reflecting its multitarget and multipathway action, and providing new ideas to further uncover its pharmacological basis and mechanism of action.
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Affiliation(s)
- Yixuan Lin
- Graduate School of Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Chuqiao Shen
- Department of Pharmacy, The First Affiliated Hospital of Anhui University of Traditional Chinese Medicine, Hefei, Anhui, China
| | - Fanjing Wang
- Graduate School of Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Zhaohui Fang
- Department of Endocrinology, The First Affiliated Hospital of Anhui University of Traditional Chinese Medicine, Hefei, Anhui, China
- Anhui Academic of Traditional Chinese Medicine Diabetes Research Institute, Hefei, Anhui, China
| | - Guoming Shen
- Graduate School of Anhui University of Chinese Medicine, Hefei, Anhui, China
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29
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Bhusal A, Rahman MH, Lee WH, Lee IK, Suk K. Satellite glia as a critical component of diabetic neuropathy: Role of lipocalin-2 and pyruvate dehydrogenase kinase-2 axis in the dorsal root ganglion. Glia 2020; 69:971-996. [PMID: 33251681 DOI: 10.1002/glia.23942] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 11/18/2020] [Accepted: 11/18/2020] [Indexed: 12/12/2022]
Abstract
Diabetic peripheral neuropathy (DPN) is a common complication of uncontrolled diabetes. The pathogenesis of DPN is associated with chronic inflammation in dorsal root ganglion (DRG), eventually causing structural and functional changes. Studies on DPN have primarily focused on neuronal component, and there is limited knowledge about the role of satellite glial cells (SGCs), although they completely enclose neuronal soma in DRG. Lipocalin-2 (LCN2) is a pro-inflammatory acute-phase protein found in high levels in diverse neuroinflammatory and metabolic disorders. In diabetic DRG, the expression of LCN2 was increased exclusively in the SGCs. This upregulation of LCN2 in SGCs correlated with increased inflammatory responses in DRG and sciatic nerve. Furthermore, diabetes-induced inflammation and morphological changes in DRG, as well as sciatic nerve, were attenuated in Lcn2 knockout (KO) mice. Lcn2 gene ablation also ameliorated neuropathy phenotype as determined by nerve conduction velocity and intraepidermal nerve fiber density. Mechanistically, studies using specific gene KO mice, adenovirus-mediated gene overexpression strategy, and primary cultures of DRG SGCs and neurons have demonstrated that LCN2 enhances the expression of mitochondrial gate-keeping regulator pyruvate dehydrogenase kinase-2 (PDK2) through PPARβ/δ, thereby inhibiting pyruvate dehydrogenase activity and increasing production of glycolytic end product lactic acid in DRG SGCs and neurons of diabetic mice. Collectively, our findings reveal a crucial role of glial LCN2-PPARβ/δ-PDK2-lactic acid axis in progression of DPN. Our results establish a link between pro-inflammatory LCN2 and glycolytic PDK2 in DRG SGCs and neurons and propose a novel glia-based mechanism and drug target for therapy of DPN. MAIN POINTS: Diabetes upregulates LCN2 in satellite glia, which in turn increases pyruvate dehydrogenase kinase-2 (PDK2) expression and lactic acid production in dorsal root ganglia (DRG). Glial LCN2-PDK2-lactic acid axis in DRG plays a crucial role in the pathogenesis of diabetic neuropathy.
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Affiliation(s)
- Anup Bhusal
- Department of Pharmacology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea.,BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Sciences, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Md Habibur Rahman
- Department of Pharmacology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea.,BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Sciences, School of Medicine, Kyungpook National University, Daegu, Republic of Korea.,Brain Science and Engineering Institute, Kyungpook National University, Daegu, Republic of Korea
| | - Won-Ha Lee
- School of Life Sciences, Brain Korea 21 Plus/Kyungpook National University Creative BioResearch Group, Kyungpook National University, Daegu, Republic of Korea
| | - In-Kyu Lee
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, Republic of Korea.,Research Institute of Aging and Metabolism, Kyungpook National University, Daegu, Republic of Korea
| | - Kyoungho Suk
- Department of Pharmacology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea.,BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Sciences, School of Medicine, Kyungpook National University, Daegu, Republic of Korea.,Brain Science and Engineering Institute, Kyungpook National University, Daegu, Republic of Korea
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30
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Russell JS, Griffith TA, Naghipour S, Vider J, Du Toit EF, Patel HH, Peart JN, Headrick JP. Dietary α-Linolenic Acid Counters Cardioprotective Dysfunction in Diabetic Mice: Unconventional PUFA Protection. Nutrients 2020; 12:nu12092679. [PMID: 32887376 PMCID: PMC7551050 DOI: 10.3390/nu12092679] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 08/12/2020] [Accepted: 08/26/2020] [Indexed: 12/15/2022] Open
Abstract
Whether dietary omega-3 (n-3) polyunsaturated fatty acid (PUFA) confers cardiac benefit in cardiometabolic disorders is unclear. We test whether dietary -linolenic acid (ALA) enhances myocardial resistance to ischemia-reperfusion (I-R) and responses to ischemic preconditioning (IPC) in type 2 diabetes (T2D); and involvement of conventional PUFA-dependent mechanisms (caveolins/cavins, kinase signaling, mitochondrial function, and inflammation). Eight-week male C57Bl/6 mice received streptozotocin (75 mg/kg) and 21 weeks high-fat/high-carbohydrate feeding. Half received ALA over six weeks. Responses to I-R/IPC were assessed in perfused hearts. Localization and expression of caveolins/cavins, protein kinase B (AKT), and glycogen synthase kinase-3 β (GSK3β); mitochondrial function; and inflammatory mediators were assessed. ALA reduced circulating leptin, without affecting body weight, glycemic dysfunction, or cholesterol. While I-R tolerance was unaltered, paradoxical injury with IPC was reversed to cardioprotection with ALA. However, post-ischemic apoptosis (nucleosome content) appeared unchanged. Benefit was not associated with shifts in localization or expression of caveolins/cavins, p-AKT, p-GSK3β, or mitochondrial function. Despite mixed inflammatory mediator changes, tumor necrosis factor-a (TNF-a) was markedly reduced. Data collectively reveal a novel impact of ALA on cardioprotective dysfunction in T2D mice, unrelated to caveolins/cavins, mitochondrial, or stress kinase modulation. Although evidence suggests inflammatory involvement, the basis of this "un-conventional" protection remains to be identified.
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Affiliation(s)
- Jake S. Russell
- School of Medical Science, Griffith University Gold Coast, Southport QLD 4217, Australia; (J.S.R.); (T.A.G.); (S.N.); (J.V.); (E.F.D.T.); (J.N.P.)
| | - Tia A. Griffith
- School of Medical Science, Griffith University Gold Coast, Southport QLD 4217, Australia; (J.S.R.); (T.A.G.); (S.N.); (J.V.); (E.F.D.T.); (J.N.P.)
| | - Saba Naghipour
- School of Medical Science, Griffith University Gold Coast, Southport QLD 4217, Australia; (J.S.R.); (T.A.G.); (S.N.); (J.V.); (E.F.D.T.); (J.N.P.)
| | - Jelena Vider
- School of Medical Science, Griffith University Gold Coast, Southport QLD 4217, Australia; (J.S.R.); (T.A.G.); (S.N.); (J.V.); (E.F.D.T.); (J.N.P.)
| | - Eugene F. Du Toit
- School of Medical Science, Griffith University Gold Coast, Southport QLD 4217, Australia; (J.S.R.); (T.A.G.); (S.N.); (J.V.); (E.F.D.T.); (J.N.P.)
| | - Hemal H. Patel
- VA San Diego Healthcare System and Department of Anesthesiology, University of California, San Diego, CA 92093, USA;
| | - Jason N. Peart
- School of Medical Science, Griffith University Gold Coast, Southport QLD 4217, Australia; (J.S.R.); (T.A.G.); (S.N.); (J.V.); (E.F.D.T.); (J.N.P.)
| | - John P. Headrick
- School of Medical Science, Griffith University Gold Coast, Southport QLD 4217, Australia; (J.S.R.); (T.A.G.); (S.N.); (J.V.); (E.F.D.T.); (J.N.P.)
- Correspondence: ; Tel.: +61-7-5552-8292
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Bioinformatic Analysis of Neuroimmune Mechanism of Neuropathic Pain. BIOMED RESEARCH INTERNATIONAL 2020; 2020:4516349. [PMID: 32908889 PMCID: PMC7475749 DOI: 10.1155/2020/4516349] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 08/07/2020] [Accepted: 08/13/2020] [Indexed: 12/21/2022]
Abstract
Background Neuropathic pain (NP) is a devastating complication following nerve injury, and it can be alleviated by regulating neuroimmune direction. We aimed to explore the neuroimmune mechanism and identify some new diagnostic or therapeutic targets for NP treatment via bioinformatic analysis. Methods The microarray GSE18803 was downloaded and analyzed using R. The Venn diagram was drawn to find neuroimmune-related differentially expressed genes (DEGs) in neuropathic pain. Gene Ontology (GO), pathway enrichment, and protein-protein interaction (PPI) network were used to analyze DEGs, respectively. Besides, the identified hub genes were submitted to the DGIdb database to find relevant therapeutic drugs. Results A total of 91 neuroimmune-related DEGs were identified. The results of GO and pathway enrichment analyses were closely related to immune and inflammatory responses. PPI analysis showed two important modules and 8 hub genes: PTPRC, CD68, CTSS, RAC2, LAPTM5, FCGR3A, CD53, and HCK. The drug-hub gene interaction network was constructed by Cytoscape, and it included 24 candidate drugs and 3 hub genes. Conclusion The present study helps us better understand the neuroimmune mechanism of neuropathic pain and provides some novel insights on NP treatment, such as modulation of microglia polarization and targeting bone resorption. Besides, CD68, CTSS, LAPTM5, FCGR3A, and CD53 may be used as early diagnostic biomarkers and the gene HCK can be a therapeutic target.
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Wei W, Li L, Deng L, Wang ZJ, Dong JJ, Lyu XY, Jia T, Wang L, Wang HX, Mao H, Zhao S. Autologous Bone Marrow Mononuclear Cell Transplantation Therapy Improved Symptoms in Patients with Refractory Diabetic Sensorimotor Polyneuropathy via the Mechanisms of Paracrine and Immunomodulation: A Controlled Study. Cell Transplant 2020; 29:963689720949258. [PMID: 32787571 PMCID: PMC7563922 DOI: 10.1177/0963689720949258] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
We recently reported that transplantation of autologous bone marrow mononuclear
cells (BM-MNCs) may be an effective and promising therapy to treat refractory
diabetic sensorimotor polyneuropathy (DSPN) in patients with type 2 diabetes
mellitus (T2DM). This study was designed to investigate the potential mechanisms
of BM-MNCs therapy, which recruited 60 patients with DSPN, 30 T2DM patients
without complications, and 30 healthy control participants. All clinical
parameters, the levels of inflammatory markers, and growth factors in the three
groups were compared. Patients in DSPN group had higher level of tumor necrosis
factor-α (TNF-α) (DSPN vs control, 412.90 ± 64.58 vs 374.81 ± 63.18 pg/mL,
P < 0.01) and lower level of vascular endothelial growth
factor (VEGF) (DSPN vs control, 140.93 ± 24.78 vs 157.39 ± 25.11 pg/mL,
P < 0.01) than those in control group. DSPN group had
the highest level of soluble intercellular adhesion molecule-1 (sICAM-1) among
three groups (DSPN and DM vs control, 1477.56 ± 228.00 and 1342.17 ± 237.54 vs
1308.00 ± 200.94 ng/mL, P < 0.05). The level of nerve growth
factor in the DSPN group was slightly lower than that in the DM group (DSPN vs
DM, 3509.11 ± 438.39 vs 3734.87 ± 647.50 pg/mL, P < 0.05).
All patients with DSPN received one intramuscular injection of BM-MNCs and
clinical follow-ups after the therapy for 2 days, 1, 4, 12, 24, and 48 weeks.
Neuropathic symptoms of foot pain, numbness, and weakness were significantly
improved within 4 weeks after BM-MNCs injection. Patients with DSPN were divided
into the responder (n = 35) and nonresponder groups
(n = 19) based on the improvement of nerve conduction
velocity at 12 weeks post-transplantation. Compared with nonresponders,
responders were younger (57.3 ± 5.2 vs 62.0 ± 4.8, P <
0.01), had a shorter history of diabetes (7.1 ± 2.7 vs 11.2 ± 5.4 years,
P < 0.01), and had higher numbers of mobilized
CD34+ cells (17.61 ± 2.64 vs 14.79 ± 1.62 ×105/L,
P < 0.01) and BM-MNCs (12.05 ± 2.16 vs 9.84 ± 1.53
×108/L, P < 0.01). The levels of TNF-α and
sICAM-1 decreased just after BM-MNCs injection in both groups and slowly
reverted to baseline levels. The duration of the downtrend of TNF-α and sICAM-1
in the responder group lasted longer than that in the nonresponder group. Serum
level of VEGF in the responder group increased immediately after BM-MNC therapy
and reached the highest point after the injection for 12 weeks. On the other
hand, VEGF levels in the nonresponder group only increased slightly. Binary
logistic regression was performed to evaluate the corresponding prognostic
factors for BM-MNCs treatment. The number of applied CD34+ cells and
the duration of diabetes were the independent predictors of responding to
BM-MNCs therapy. No adverse event associated with the treatment was observed
during follow-up observations. These results indicated that BM-MNCs
transplantation is an effective and promising therapeutic strategy to treat
refractory DSPN. The immune regulation and paracrine function of BM-MNCs may
contribute to the improvement of DSPN.
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Affiliation(s)
- Wei Wei
- Department of Endocrinology, The Central Hospital of Wuhan, Tongji Medical College, 12403Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Li Li
- Department of Endocrinology, The Central Hospital of Wuhan, Tongji Medical College, 12403Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Lin Deng
- Department of Endocrinology, The Central Hospital of Wuhan, Tongji Medical College, 12403Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Zhong-Jing Wang
- Department of Endocrinology, The Central Hospital of Wuhan, Tongji Medical College, 12403Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Jing-Jian Dong
- Department of Endocrinology, The Central Hospital of Wuhan, Tongji Medical College, 12403Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Xiao-Yu Lyu
- Department of Endocrinology, The Central Hospital of Wuhan, Tongji Medical College, 12403Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Ting Jia
- Department of Endocrinology, The Central Hospital of Wuhan, Tongji Medical College, 12403Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Li Wang
- Department of Hematology, The Central Hospital of Wuhan, Tongji Medical College, 12403Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Hong-Xiang Wang
- Department of Hematology, The Central Hospital of Wuhan, Tongji Medical College, 12403Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Hong Mao
- Department of Endocrinology, The Central Hospital of Wuhan, Tongji Medical College, 12403Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Shi Zhao
- Department of Endocrinology, The Central Hospital of Wuhan, Tongji Medical College, 12403Huazhong University of Science and Technology, Wuhan, Hubei, China.,Regenerative Medical Center of Hubei Province, The Central Hospital of Wuhan, Tongji Medical College, 12403Huazhong University of Science and Technology, Wuhan, Hubei, China
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Maekawa M, Tadaki H, Tomimoto D, Okuma C, Sano R, Ishii Y, Katsuda Y, Yoshiuchi H, Kakefuda R, Ohta T, Sasase T. A Novel TNF-α Converting Enzyme (TACE) Selective Inhibitor JTP-96193 Prevents Insulin Resistance in KK-A y Type 2 Diabetic Mice and Diabetic Peripheral Neuropathy in Type 1 Diabetic Mice. Biol Pharm Bull 2020; 42:1906-1912. [PMID: 31685773 DOI: 10.1248/bpb.b19-00526] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Tumor necrosis factor-α (TNF-α) converting enzyme/a disintegrin and metalloproteinase domain-containing protein 17 (TACE/ADAM17) is a key sheddase that releases TNF-α from its inactive precursor and is thought as a new drug target to inhibit TNF-α production. In the present study, pharmacological effects of a novel TACE selective inhibitor, JTP-96193, on type 2 diabetes and diabetic peripheral neuropathy (DPN) as its major complication was examined. Enzyme inhibitory activity of JTP-96193 on TACE and other ADAMs was measured in in vitro. High fat-induced obese mice and type 2 diabetic KK-Ay mice were used to evaluate the effect of JTP-96193 on insulin resistance. Finally, streptozotocin (STZ)-induced diabetic mice were treated with JTP-96193 to evaluate the sciatic motor nerve conduction velocities (MNCV). JTP-96193 selectively inhibited human TACE activity with IC50 value of 5.4 nM and showed more than 1800-fold selectivity against other matrix metalloproteinases. In mouse models of obesity and diabetes, JTP-96193 reduced the TNF-α release from the fat tissue and prevented development of diabetes and improved insulin resistance, respectively. Furthermore, JTP-96193 prevented delay of sciatic MNCV without any effects on blood glucose or insulin levels in STZ-induced diabetic mice. TACE inhibitor is effective on insulin resistance and DPN independent from glucose-lowering effect. These pharmacological properties of JTP-96193 may be helpful to treat type 2 diabetes accompanied by its microvascular complications.
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Affiliation(s)
- Mariko Maekawa
- Biological/Pharmacological Research Laboratories, Central Pharmaceutical Research Institute, Japan Tobacco Inc
| | - Hironobu Tadaki
- Biological/Pharmacological Research Laboratories, Central Pharmaceutical Research Institute, Japan Tobacco Inc
| | - Daisuke Tomimoto
- Biological/Pharmacological Research Laboratories, Central Pharmaceutical Research Institute, Japan Tobacco Inc
| | - Chihiro Okuma
- Biological/Pharmacological Research Laboratories, Central Pharmaceutical Research Institute, Japan Tobacco Inc
| | - Ryuhei Sano
- Biological/Pharmacological Research Laboratories, Central Pharmaceutical Research Institute, Japan Tobacco Inc
| | - Yukihito Ishii
- Biological/Pharmacological Research Laboratories, Central Pharmaceutical Research Institute, Japan Tobacco Inc
| | - Yoshiaki Katsuda
- Biological/Pharmacological Research Laboratories, Central Pharmaceutical Research Institute, Japan Tobacco Inc
| | - Hiromi Yoshiuchi
- Biological/Pharmacological Research Laboratories, Central Pharmaceutical Research Institute, Japan Tobacco Inc
| | - Reina Kakefuda
- Biological/Pharmacological Research Laboratories, Central Pharmaceutical Research Institute, Japan Tobacco Inc
| | - Takeshi Ohta
- Laboratory of Animal Physiology and Functional Anatomy, Graduate School of Agriculture, Kyoto University
| | - Tomohiko Sasase
- Biological/Pharmacological Research Laboratories, Central Pharmaceutical Research Institute, Japan Tobacco Inc
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34
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Lu X, Vick S, Chen Z, Chen J, Watsky MA. Effects of Vitamin D Receptor Knockout and Vitamin D Deficiency on Corneal Epithelial Wound Healing and Nerve Density in Diabetic Mice. Diabetes 2020; 69:1042-1051. [PMID: 32139594 PMCID: PMC7171964 DOI: 10.2337/db19-1051] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 02/23/2020] [Indexed: 12/20/2022]
Abstract
Diabetic keratopathy occurs in ∼70% of all people with diabetes. This study was designed to examine the effects of vitamin D receptor knockout (VDR-/-) and vitamin D deficiency (VDD) on corneal epithelial wound healing and nerve density in diabetic mice. Diabetes was induced using the low-dose streptozotocin method. Corneal epithelial wounds were created using an Algerbrush, and wound healing was monitored over time. Corneal nerve density was measured in unwounded mice. VDR-/- and VDD diabetic mice (diabetic for 8 and 20 weeks, respectively) had slower healing ratios than wild-type diabetic mice. VDR-/- and VDD diabetic mice also showed significantly decreased nerve density. Reduced wound healing ratios and nerve densities were not fully rescued by a supplemental diet rich in calcium, lactose, and phosphate. We conclude that VDR-/- and VDD significantly reduce both corneal epithelial wound healing and nerve density in diabetic mice. Because the supplemental diet did not rescue wound healing or nerve density, these effects are likely not specifically related to hypocalcemia. This work supports the hypothesis that low vitamin D levels can exacerbate preexisting ophthalmic conditions, such as diabetes.
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Affiliation(s)
- Xiaowen Lu
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA
| | - Sarah Vick
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA
| | - Zhong Chen
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA
| | - Jie Chen
- Biostatistics and Data Science, Department of Population Health Sciences, Medical College of Georgia, Augusta University, Augusta, GA
| | - Mitchell A Watsky
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA
- The Graduate School, Augusta University, Augusta, GA
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35
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Takamura H, Terashima T, Mori K, Katagi M, Okano J, Suzuki Y, Imai S, Kojima H. Bone-Marrow-Derived Mononuclear Cells Relieve Neuropathic Pain after Spinal Nerve Injury in Mice. MOLECULAR THERAPY-METHODS & CLINICAL DEVELOPMENT 2020; 17:657-665. [PMID: 32322604 PMCID: PMC7160523 DOI: 10.1016/j.omtm.2020.03.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 03/23/2020] [Indexed: 12/19/2022]
Abstract
Treating neuropathic pain is a critical clinical issue. Although numerous therapies have been proposed, effective treatments have not been established. Therefore, safe and feasible treatment methods are urgently needed. In this study, we investigated the therapeutic effects of autologous intrathecal administration of bone-marrow-derived mononuclear cells (MNCs) on neuropathic pain. We generated a mouse model of neuropathic pain by transecting the spinal nerve and evaluated neuropathic pain by measuring the mechanical threshold in the following 14 days. Mice in the MNC injection group had a higher mechanical threshold than those in the buffer group. We assessed the effect of MNC treatment on the dorsal root ganglia and spinal cord by immunohistochemistry, mRNA expression, and cytokine assay. The migration and accumulation of microglia were significantly suppressed in the MNC group, and the mRNA expression of inflammatory cytokines such as interleukin (IL)-6, IL-1β, and tumor necrosis factor alpha (TNF-α) was markedly downregulated. Furthermore, MNC administration tended to suppress various cytokines in the cerebrospinal fluid of the model mice. In conclusion, our results suggest that intrathecal injection of MNCs relieves neuropathic pain and might be a promising cell therapy for the treatment of this condition.
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Affiliation(s)
- Hiroshi Takamura
- Department of Stem Cell Biology and Regenerative Medicine, Shiga University of Medical Science, Shiga 520-2192, Japan.,Department of Orthopedic Surgery, Shiga University of Medical Science, Shiga, Japan
| | - Tomoya Terashima
- Department of Stem Cell Biology and Regenerative Medicine, Shiga University of Medical Science, Shiga 520-2192, Japan
| | - Kanji Mori
- Department of Orthopedic Surgery, Shiga University of Medical Science, Shiga, Japan
| | - Miwako Katagi
- Department of Stem Cell Biology and Regenerative Medicine, Shiga University of Medical Science, Shiga 520-2192, Japan
| | - Junko Okano
- Department of Plastic and Reconstructive Surgery, Shiga University of Medical Science, Shiga, Japan
| | - Yoshihisa Suzuki
- Department of Plastic and Reconstructive Surgery, Shiga University of Medical Science, Shiga, Japan
| | - Shinji Imai
- Department of Orthopedic Surgery, Shiga University of Medical Science, Shiga, Japan
| | - Hideto Kojima
- Department of Stem Cell Biology and Regenerative Medicine, Shiga University of Medical Science, Shiga 520-2192, Japan
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36
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Wang H, Chen H, Gao Y, Wang S, Wang X, Tang X, Fang W, Shi X, Yao J, Chen Q. The effect of wuling capsule on depression in Type 2 diabetic patients. Biosci Rep 2020; 40:BSR20191260. [PMID: 31894843 PMCID: PMC7029151 DOI: 10.1042/bsr20191260] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Revised: 12/03/2019] [Accepted: 12/19/2019] [Indexed: 01/27/2023] Open
Abstract
OBJECTIVE Depression is a common complication in Type 2 diabetes mellitus (T2DM); however, it has long been underrecognized and undertreated. In the present study, we aimed to evaluate the clinical effects of Wuling capsule, a compound traditional Chinese herbal medicine, on T2DM complicated with depression. METHOD 66 patients were enrolled and randomly divided into Wuling capsule treatment group and placebo group, and finally 64 cases finished the present study. The levels of FPG, 2hPG, HbAlc, TNF-α, IL-6, SOD, MDA, Cor, ACTH, HOMA-β, HOMA-IR and ISI of patients were evaluated and compared. The HAMD scale for patients were recorded. RESULT After 12-week treatment, the HAMD scale decreased in both groups, and was lower in Wuling capsule group. The level of FPG in Wuling capsule group was significantly lower than in placebo group; however, no obvious changes of 2hPG and HbA1c were found. The levels of IL-6 and TNF-α were significantly decreased in both groups, and more obviously in Wuling capsule group. The level of SOD was increased while the level of MDA was decreased significantly in both groups, and the changes were more obviously in Wuling capsule group. The levels of Cor and ACTH were significantly decreased in both groups; however, there was no statistically significance between the two groups. Besides, the comparisons of HOMA-β, HOMA-IR and ISI between the two groups were not statistically significant. CONCLUSION Our results suggested that Wuling capsule ameliorated the depression in patients with T2DM, and also improved the state of inflammation and oxidative stress state. These results also strongly indicated the ability of clinical transformation of Wuling capsule in patients with T2DM in the future.
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Affiliation(s)
- Huanping Wang
- Department of Endocrinology, Hospital of Chengdu University of Traditional Chinese Medicine, China
| | - Huizhen Chen
- Department of Endocrinology, Hospital of Chengdu University of Traditional Chinese Medicine, China
| | - Yang Gao
- Department of Endocrinology, Hospital of Chengdu University of Traditional Chinese Medicine, China
| | - Shengju Wang
- Department of Endocrinology, Hospital of Chengdu University of Traditional Chinese Medicine, China
| | - Xian Wang
- Department of Endocrinology, Hospital of Chengdu University of Traditional Chinese Medicine, China
| | - Xiaomei Tang
- Department of Endocrinology, Hospital of Chengdu University of Traditional Chinese Medicine, China
| | - Wei Fang
- Department of Endocrinology, Hospital of Chengdu University of Traditional Chinese Medicine, China
| | - Xiaoyan Shi
- Department of Endocrinology, Hospital of Chengdu University of Traditional Chinese Medicine, China
| | - Jia Yao
- Department of Endocrinology, Hospital of Chengdu University of Traditional Chinese Medicine, China
| | - Qiu Chen
- Department of Endocrinology, Hospital of Chengdu University of Traditional Chinese Medicine, China
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37
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Herrmann O, Kuepper MK, Bütow M, Costa IG, Appelmann I, Beier F, Luedde T, Braunschweig T, Koschmieder S, Brümmendorf TH, Schemionek M. Infliximab therapy together with tyrosine kinase inhibition targets leukemic stem cells in chronic myeloid leukemia. BMC Cancer 2019; 19:658. [PMID: 31272418 PMCID: PMC6610865 DOI: 10.1186/s12885-019-5871-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 06/24/2019] [Indexed: 01/17/2023] Open
Abstract
Background Expression of Bcr-Abl in hematopoietic stem cells is sufficient to cause chronic myeloid leukemia (CML) and tyrosine kinase inhibitors (TKI) induce molecular remission in the majority of CML patients. However, the disease driving stem cell population is not fully targeted by TKI therapy, and leukemic stem cells (LSC) capable of re-inducing the disease can persist. Single-cell RNA-sequencing technology recently identified an enriched inflammatory gene signature with TNFα and TGFβ being activated in TKI persisting quiescent LSC. Here, we studied the effects of human TNFα antibody infliximab (IFX), which has been shown to induce anti-inflammatory effects in mice, combined with TKI treatment on LSC function. Methods We first performed GSEA-pathway analysis using our microarray data of murine LSK cells (lin−; Sca-1+; c-kit+) from the SCLtTA/Bcr-Abl CML transgenic mouse model. Bcr-Abl positive cell lines were generated by retroviral transduction. Clonogenic potential was assessed by CFU (colony forming unit). CML mice were treated with nilotinib or nilotinib plus infliximab, and serial transplantation experiments were performed. Results Likewise to human CML, TNFα signaling was specifically active in murine CML stem cells, and ectopic expression of Bcr-Abl in murine and human progenitor cell lines induced TNFα expression. In vitro exposure to human (IFX) or murine (MP6-XT22) TNFα antibody reduced clonogenic growth of CML cells. Interestingly, TNFα antibody treatment enhanced TKI-induced effects on immature cells in vitro. Additionally, in transplant and serial transplant experiments, using our transgenic CML mouse model, we could subsequently show that IFX therapy boosted TKI-induced effects and further reduced the proportion of malignant stem cells in vivo. Conclusion TNFα signaling is induced in CML stem cells, and anti-inflammatory therapy enhances TKI-induced decline of LSC, confirming that successful targeting of persisting CML stem cells can be enhanced by addressing their malignant microenvironment simultaneously. Electronic supplementary material The online version of this article (10.1186/s12885-019-5871-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Oliver Herrmann
- Department of Hematology Oncology Hemostaseology and Stem Cell Transplantation Faculty of Medicine, University Hospital RWTH Aachen, Pauwelsstr 30, 52074, Aachen, Germany
| | - Maja Kim Kuepper
- Department of Hematology Oncology Hemostaseology and Stem Cell Transplantation Faculty of Medicine, University Hospital RWTH Aachen, Pauwelsstr 30, 52074, Aachen, Germany
| | - Marlena Bütow
- Department of Hematology Oncology Hemostaseology and Stem Cell Transplantation Faculty of Medicine, University Hospital RWTH Aachen, Pauwelsstr 30, 52074, Aachen, Germany
| | - Ivan G Costa
- IZKF Research Group Bioinformatics Institute for Biomedical Engineering, RWTH Aachen University, Aachen, Germany
| | - Iris Appelmann
- Department of Hematology Oncology Hemostaseology and Stem Cell Transplantation Faculty of Medicine, University Hospital RWTH Aachen, Pauwelsstr 30, 52074, Aachen, Germany
| | - Fabian Beier
- Department of Hematology Oncology Hemostaseology and Stem Cell Transplantation Faculty of Medicine, University Hospital RWTH Aachen, Pauwelsstr 30, 52074, Aachen, Germany
| | - Tom Luedde
- Department of Medicine III, University Hospital RWTH Aachen, Aachen, Germany
| | - Till Braunschweig
- Department of Pathology, University Hospital RWTH Aachen, Aachen, Germany
| | - Steffen Koschmieder
- Department of Hematology Oncology Hemostaseology and Stem Cell Transplantation Faculty of Medicine, University Hospital RWTH Aachen, Pauwelsstr 30, 52074, Aachen, Germany
| | - Tim H Brümmendorf
- Department of Hematology Oncology Hemostaseology and Stem Cell Transplantation Faculty of Medicine, University Hospital RWTH Aachen, Pauwelsstr 30, 52074, Aachen, Germany
| | - Mirle Schemionek
- Department of Hematology Oncology Hemostaseology and Stem Cell Transplantation Faculty of Medicine, University Hospital RWTH Aachen, Pauwelsstr 30, 52074, Aachen, Germany.
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38
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Chen J, Liu W, Yi H, Hu X, Peng L, Yang F. MicroRNA-155 mimics ameliorates nerve conduction velocities and suppresses hyperglycemia-induced pro-inflammatory genes in diabetic peripheral neuropathic mice. Am J Transl Res 2019; 11:3905-3918. [PMID: 31312398 PMCID: PMC6614614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 05/26/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND MicroRNA-155 (miR-155) regulates inflammatory cytokines, however its role in Diabetic neuropathy (DN) remains unexplored. METHODS A strain of mice (db/db) having type II diabetes were studied for expression of miR-155 in plasma and in sciatic nerves. The miR-155 mimic treated mice were studied for effect on motor and sensory nerve conduction velocities along with blood perfusion in sciatic nerves and response to thermal stimuli test. The mice were evaluated for density of blood vessels, quantity of intra-epidermal nerve fibers (IENF), diameters of axons & thickness of myelin sheath of sciatic nerves. Bioinformatics analysis was done to confirm target genes of miR-155. RESULTS The db/db mice showed significant suppression of miR-155 in sciatic nerves. The treatment of miR-155 mimic elevated levels of miR-155 in both sciatic nerves and plasma; it also enhanced the blood flow in sciatic nerves and velocities of conduction for both sensory and motor nerves. The treatment showed significant decrease in the threshold to thermal stimuli in db/db mice. A significant improvement in density of perfused blood vessels was observed, along with elevation of IENF and thickness of myelin and axon diameters of sciatic nerves. The treatment attenuated levels of TNF-α, iNOS, IL1-β and Ym1. Microarray analysis showed that the treatment decreased the expression of proinflammatory genes TRAF2 and Notch2, SORT1 and were identified as target by in silico studies. CONCLUSION Treatment of miR-155 mimic in db/db mice attenuated DN, suppressed diabetic associated proinflammatory genes and confirmed miR-155 mimic as therapeutic strategy for treating DN.
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Affiliation(s)
- Ji Chen
- Department of Endocrinology, The First Affiliated Hospital of University of South ChinaHunan Province 421001, China
| | - Wenjie Liu
- Department of Anesthesiology, The First Affiliated Hospital of University of South ChinaHunan Province 421001, China
| | - Han Yi
- Department of Anesthesiology, The First Affiliated Hospital of University of South ChinaHunan Province 421001, China
| | - Xiaoling Hu
- Department of Anesthesiology, The First Affiliated Hospital of University of South ChinaHunan Province 421001, China
| | - Liangyu Peng
- Department of Anesthesiology, The First Affiliated Hospital of University of South ChinaHunan Province 421001, China
| | - Fengrui Yang
- Department of Anesthesiology, The First Affiliated Hospital of University of South ChinaHunan Province 421001, China
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39
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Inoue T, Yamakage H, Tanaka M, Kusakabe T, Shimatsu A, Satoh-Asahara N. Oxytocin Suppresses Inflammatory Responses Induced by Lipopolysaccharide through Inhibition of the eIF-2-ATF4 Pathway in Mouse Microglia. Cells 2019; 8:cells8060527. [PMID: 31159306 PMCID: PMC6627458 DOI: 10.3390/cells8060527] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 05/27/2019] [Accepted: 05/28/2019] [Indexed: 02/06/2023] Open
Abstract
Microglia maintain brain homeostasis and modulate neuroinflammation and are implicated in the pathogenesis of various neurological diseases such as Alzheimer's disease. In this study, we found that in lipopolysaccharide (LPS)-stimulated microglia, the endoplasmic reticulum (ER) stress-related eIF-2-ATF4 pathway plays significant roles in TNF- and IL-6 production, as well as in the inflammasome-mediated production of IL-1. Furthermore, our analysis revealed that oxytocin (OT), a nonapeptide synthesized in the hypothalamus, suppressed the production of these proinflammatory cytokines by inhibiting activation of the eIF-2-ATF4 pathway. Our findings therefore suggest a novel anti-inflammatory axis of OT in activated microglia, which would be helpful for developing the novel effective strategies for regulating microglia-associated neuroinflammation.
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Affiliation(s)
- Takayuki Inoue
- Department of Endocrinology, Metabolism, and Hypertension Research, Clinical Research Institute, National Hospital Organization Kyoto Medical Center, Kyoto 612-8555, Japan.
| | - Hajime Yamakage
- Department of Endocrinology, Metabolism, and Hypertension Research, Clinical Research Institute, National Hospital Organization Kyoto Medical Center, Kyoto 612-8555, Japan.
| | - Masashi Tanaka
- Department of Endocrinology, Metabolism, and Hypertension Research, Clinical Research Institute, National Hospital Organization Kyoto Medical Center, Kyoto 612-8555, Japan.
- Department of Physical Therapy, Health Science University, Yamanashi 401-0380, Japan.
| | - Toru Kusakabe
- Department of Endocrinology, Metabolism, and Hypertension Research, Clinical Research Institute, National Hospital Organization Kyoto Medical Center, Kyoto 612-8555, Japan.
| | - Akira Shimatsu
- Clinical Research Institute, National Hospital Organization Kyoto Medical Center, Kyoto 612-8555, Japan.
| | - Noriko Satoh-Asahara
- Department of Endocrinology, Metabolism, and Hypertension Research, Clinical Research Institute, National Hospital Organization Kyoto Medical Center, Kyoto 612-8555, Japan.
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40
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Bönhof GJ, Herder C, Strom A, Papanas N, Roden M, Ziegler D. Emerging Biomarkers, Tools, and Treatments for Diabetic Polyneuropathy. Endocr Rev 2019; 40:153-192. [PMID: 30256929 DOI: 10.1210/er.2018-00107] [Citation(s) in RCA: 118] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 08/23/2018] [Indexed: 12/12/2022]
Abstract
Diabetic neuropathy, with its major clinical sequels, notably neuropathic pain, foot ulcers, and autonomic dysfunction, is associated with substantial morbidity, increased risk of mortality, and reduced quality of life. Despite its major clinical impact, diabetic neuropathy remains underdiagnosed and undertreated. Moreover, the evidence supporting a benefit for causal treatment is weak at least in patients with type 2 diabetes, and current pharmacotherapy is largely limited to symptomatic treatment options. Thus, a better understanding of the underlying pathophysiology is mandatory for translation into new diagnostic and treatment approaches. Improved knowledge about pathogenic pathways implicated in the development of diabetic neuropathy could lead to novel diagnostic techniques that have the potential of improving the early detection of neuropathy in diabetes and prediabetes to eventually embark on new treatment strategies. In this review, we first provide an overview on the current clinical aspects and illustrate the pathogenetic concepts of (pre)diabetic neuropathy. We then describe the biomarkers emerging from these concepts and novel diagnostic tools and appraise their utility in the early detection and prediction of predominantly distal sensorimotor polyneuropathy. Finally, we discuss the evidence for and limitations of the current and novel therapy options with particular emphasis on lifestyle modification and pathogenesis-derived treatment approaches. Altogether, recent years have brought forth a multitude of emerging biomarkers reflecting different pathogenic pathways such as oxidative stress and inflammation and diagnostic tools for an early detection and prediction of (pre)diabetic neuropathy. Ultimately, these insights should culminate in improving our therapeutic armamentarium against this common and debilitating or even life-threatening condition.
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Affiliation(s)
- Gidon J Bönhof
- Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Christian Herder
- Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research, Heinrich Heine University Düsseldorf, Düsseldorf, Germany.,German Center for Diabetes Research, Munich-Neuherberg, Neuherberg, Partner Düsseldorf, Düsseldorf, Germany.,Medical Faculty, Heinrich Heine University, Düsseldorf, Germany
| | - Alexander Strom
- Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research, Heinrich Heine University Düsseldorf, Düsseldorf, Germany.,German Center for Diabetes Research, Munich-Neuherberg, Neuherberg, Partner Düsseldorf, Düsseldorf, Germany
| | - Nikolaos Papanas
- Second Department of Internal Medicine, Diabetes Center, Diabetic Foot Clinic, Democritus University of Thrace, Alexandroupolis, Greece
| | - Michael Roden
- Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research, Heinrich Heine University Düsseldorf, Düsseldorf, Germany.,German Center for Diabetes Research, Munich-Neuherberg, Neuherberg, Partner Düsseldorf, Düsseldorf, Germany.,Division of Endocrinology and Diabetology, Medical Faculty, Heinrich Heine University, Düsseldorf, Germany
| | - Dan Ziegler
- Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research, Heinrich Heine University Düsseldorf, Düsseldorf, Germany.,German Center for Diabetes Research, Munich-Neuherberg, Neuherberg, Partner Düsseldorf, Düsseldorf, Germany.,Division of Endocrinology and Diabetology, Medical Faculty, Heinrich Heine University, Düsseldorf, Germany
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41
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Dewanjee S, Das S, Das AK, Bhattacharjee N, Dihingia A, Dua TK, Kalita J, Manna P. Molecular mechanism of diabetic neuropathy and its pharmacotherapeutic targets. Eur J Pharmacol 2018; 833:472-523. [DOI: 10.1016/j.ejphar.2018.06.034] [Citation(s) in RCA: 117] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 06/15/2018] [Accepted: 06/26/2018] [Indexed: 02/07/2023]
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Ignatowski TA, Spengler RN. Targeting tumor necrosis factor in the brain relieves neuropathic pain. World J Anesthesiol 2018; 7:10-19. [DOI: 10.5313/wja.v7.i2.10] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 05/28/2018] [Accepted: 06/02/2018] [Indexed: 02/06/2023] Open
Abstract
Neuropathic pain is a chronic syndrome caused by direct damage to or disease of the somatosensory nervous system. The lack of safe, adequate and sustained pain relief offered by present analgesic treatments is most alarming. While many treatment options are available to manage chronic pain, such as antidepressants, non-steroidal anti-inflammatory agents, opioids, and anticonvulsants, chronic neuropathic pain remains largely unmanaged. Compounding the dilemma of ineffective chronic pain treatments is the need to provide relief from suffering and yet not contribute to the scourge of drug abuse. A recent epidemic of addiction and accidental drug prescription overdoses parallel the increased use of opioid treatment, even though opioids are rarely an effective treatment of relieving chronic pain. To make matters worse, opioids may contribute to exacerbating pain, and side-effects such as cognitive impairment, nausea, constipation, development of tolerance, as well as their potential for addiction and overdose deaths exist. Clearly, there is an urgent need for alternative, non-opiate treatment of chronic pain. Innovative discoveries of pertinent brain mechanisms and functions are key to developing effective, safe treatments. Pioneering work has revealed the essential effects of the pleiotropic mediator tumor necrosis factor (TNF) on brain functioning. These studies establish that TNF inhibits norepinephrine release from hippocampal neurons, and show that excess TNF production within the hippocampus occurs during neuropathic pain, which mobilizes additional mechanisms that further inhibit norepinephrine release. Significantly, it has been verified that elevated levels of TNF in the brain are actually required for neuropathic pain development. Since TNF decreases norepinephrine release in the brain, enhanced TNF levels would prevent engagement of the norepinephrine descending inhibitory neuronal pain pathways. Increased levels of TNF in the brain are therefore critical to the development of neuropathic pain. Therefore, strategies that decrease this enhanced TNF expression in the brain will have superior analgesic efficacy. We propose this novel approach of targeting the pathologically high levels of brain TNF as an effective strategy in the treatment of the devastating syndrome of chronic pain.
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Affiliation(s)
- Tracey A Ignatowski
- Department of Pathology and Anatomical Sciences and Program for Neuroscience, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, The State University of New York, Buffalo, NY 14203, United States
- NanoAxis, LLC, Clarence, NY 14031, United States
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43
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Schwartz J, Moreno E, Calvo A, Blanco L, Fernández-Rubio C, Sanmartín C, Nguewa P, Irache JM, Larrea E, Espuelas S. Combination of paromomycin plus human anti-TNF-α antibodies to control the local inflammatory response in BALB/ mice with cutaneous leishmaniasis lesions. J Dermatol Sci 2018; 92:78-88. [PMID: 30037731 DOI: 10.1016/j.jdermsci.2018.07.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 07/05/2018] [Accepted: 07/12/2018] [Indexed: 12/21/2022]
Abstract
BACKGROUND Cutaneous leishmaniasis (CL) skin lesions are the result of a deregulated immune response, which is unable to eliminate Leishmania parasites. The control of both, parasites and host immune response, is critical to prevent tissue destruction. The skin ulceration has been correlated with high TNF-α level. OBJECTIVE Because human anti-TNF-α antibodies (Ab) have been successfully assayed in several mice inflammatory diseases, we hypothesized that their anti-inflammatory effect could optimize the healing of CL lesions achieved after topical application of paromomycin (PM), the current chemotherapy against CL. METHODS AND RESULTS We first compared the in vitro efficacy of PM and Ab alone and the drug given in combination with Ab to assess if the Ab could interfere with PM leishmanicidal activity in L. major-infected bone marrow-derived macrophages. The combination therapy had similar antileishmanial activity to the drug alone and showed no influence on NO production, which allows macrophage-mediated parasite killing. Next, we demonstrated in an in vivo model of Imiquimod®-induced inflammation that topical Ab and PM inhibit the infiltration of inflammatory cells in the skin. In the efficacy studies in L. major-infected BALB/c mice, PM combined with Ab led to a sharp infection reduction and showed a stronger anti-inflammatory activity than PM alone. This was confirmed by the down-regulation of TNF-α, IL-1β, iNOS, IL-17, and CCL3 as well as by a decrease of the neutrophilic infiltrate during infection upon treatment with the Ab. CONCLUSIONS In terms of parasite elimination and inflammation reduction, topical application of Ab in combination with PM was more effective than the drug alone.
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Affiliation(s)
- Juana Schwartz
- Tropical Health Institute, University of Navarra, Irunlarrea 1, E-31008, Pamplona, Spain; Pharmacy and Pharmaceutical Technology Department, University of Navarra, Irunlarrea 1, E-31008, Pamplona, Spain; Navarra Institute for Health Research, IdisNA, Spain
| | - Esther Moreno
- Tropical Health Institute, University of Navarra, Irunlarrea 1, E-31008, Pamplona, Spain; Pharmacy and Pharmaceutical Technology Department, University of Navarra, Irunlarrea 1, E-31008, Pamplona, Spain; Navarra Institute for Health Research, IdisNA, Spain; Organic and Pharmaceutical Chemistry Department, University of Navarra, Irunlarrea 1, E-31008, Pamplona, Spain
| | - Alba Calvo
- Tropical Health Institute, University of Navarra, Irunlarrea 1, E-31008, Pamplona, Spain; Pharmacy and Pharmaceutical Technology Department, University of Navarra, Irunlarrea 1, E-31008, Pamplona, Spain; Navarra Institute for Health Research, IdisNA, Spain
| | - Laura Blanco
- Tropical Health Institute, University of Navarra, Irunlarrea 1, E-31008, Pamplona, Spain; Pharmacy and Pharmaceutical Technology Department, University of Navarra, Irunlarrea 1, E-31008, Pamplona, Spain; Navarra Institute for Health Research, IdisNA, Spain
| | - Celia Fernández-Rubio
- Tropical Health Institute, University of Navarra, Irunlarrea 1, E-31008, Pamplona, Spain; Navarra Institute for Health Research, IdisNA, Spain; Microbiology and Parasitology Department, University of Navarra, Irunlarrea 1, E-31008, Pamplona, Spain
| | - Carmen Sanmartín
- Tropical Health Institute, University of Navarra, Irunlarrea 1, E-31008, Pamplona, Spain; Navarra Institute for Health Research, IdisNA, Spain; Organic and Pharmaceutical Chemistry Department, University of Navarra, Irunlarrea 1, E-31008, Pamplona, Spain
| | - Paul Nguewa
- Tropical Health Institute, University of Navarra, Irunlarrea 1, E-31008, Pamplona, Spain; Navarra Institute for Health Research, IdisNA, Spain; Microbiology and Parasitology Department, University of Navarra, Irunlarrea 1, E-31008, Pamplona, Spain
| | - Juan M Irache
- Pharmacy and Pharmaceutical Technology Department, University of Navarra, Irunlarrea 1, E-31008, Pamplona, Spain; Navarra Institute for Health Research, IdisNA, Spain
| | - Esther Larrea
- Tropical Health Institute, University of Navarra, Irunlarrea 1, E-31008, Pamplona, Spain; Navarra Institute for Health Research, IdisNA, Spain
| | - Socorro Espuelas
- Tropical Health Institute, University of Navarra, Irunlarrea 1, E-31008, Pamplona, Spain; Pharmacy and Pharmaceutical Technology Department, University of Navarra, Irunlarrea 1, E-31008, Pamplona, Spain; Navarra Institute for Health Research, IdisNA, Spain.
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Hinder LM, Murdock BJ, Park M, Bender DE, O'Brien PD, Rumora AE, Hur J, Feldman EL. Transcriptional networks of progressive diabetic peripheral neuropathy in the db/db mouse model of type 2 diabetes: An inflammatory story. Exp Neurol 2018; 305:33-43. [PMID: 29550371 DOI: 10.1016/j.expneurol.2018.03.011] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 02/14/2018] [Accepted: 03/13/2018] [Indexed: 12/13/2022]
Abstract
Diabetic peripheral neuropathy is the most common complication of diabetes and a source of considerable morbidity. Numerous molecular pathways are linked to neuropathic progression, but it is unclear whether these pathways are altered throughout the course of disease. Moreover, the methods by which these molecular pathways are analyzed can produce significantly different results; as such it is often unclear whether previously published pathways are viable targets for novel therapeutic approaches. In the current study we examine changes in gene expression patterns in the sciatic nerve (SCN) and dorsal root ganglia (DRG) of db/db diabetic mice at 8, 16, and 24 weeks of age using microarray analysis. Following the collection and verification of gene expression data, we utilized both self-organizing map (SOM) analysis and differentially expressed gene (DEG) analysis to detect pathways that were altered at all time points. Though there was some variability between SOM and DEG analyses, we consistently detected altered immune pathways in both the SCN and DRG over the course of disease. To support these results, we further used multiplex analysis to assess protein changes in the SCN of diabetic mice; we found that multiple immune molecules were upregulated at both early and later stages of disease. In particular, we found that matrix metalloproteinase-12 was highly upregulated in microarray and multiplex data sets suggesting it may play a role in disease progression.
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Affiliation(s)
- Lucy M Hinder
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109-2200, USA
| | - Benjamin J Murdock
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109-2200, USA
| | - Meeyoung Park
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109-2200, USA
| | - Diane E Bender
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109-2200, USA
| | - Phillipe D O'Brien
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109-2200, USA
| | - Amy E Rumora
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109-2200, USA
| | - Junguk Hur
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND 58203-9037, USA
| | - Eva L Feldman
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109-2200, USA.
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45
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Reichert O, Fleming T, Neufang G, Schmelz M, Genth H, Kaever V, Wenck H, Stäb F, Terstegen L, Kolbe L, Roggenkamp D. Impaired glyoxalase activity is associated with reduced expression of neurotrophic factors and pro-inflammatory processes in diabetic skin cells. Exp Dermatol 2018; 26:44-50. [PMID: 27306297 DOI: 10.1111/exd.13118] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/01/2016] [Indexed: 12/18/2022]
Abstract
Patients suffering from type II diabetes develop several skin manifestations including cutaneous infections, diabetic dermopathy, diabetic bullae and acanthosis nigricans. Diabetic micro- and macroangiopathy as well as diabetic neuropathy are believed to play a crucial role in the development of diabetic skin disorders. A reduced cutaneous nerve fibre density was reported in diabetic subjects, which subsequently leads to impaired sensory nerve functions. Using an innervated skin model, we investigated the impact of human diabetic dermal fibroblasts and keratinocytes on porcine sensory neurons. Diabetic skin cells showed a reduced capacity to induce neurite outgrowth due to a decreased support with neurotrophic factors, such as NGF. Furthermore, diabetic keratinocytes displayed insulin resistance and increased expression of pro-inflammatory cytokines demonstrating the persistent effect of diabetes mellitus on human skin cells. Dysregulations were related to a significantly reduced glyoxalase enzyme activity in diabetic keratinocytes as experimentally reduced glyoxalase activity mimicked the increase in pro-inflammatory cytokine expression and reduction in NGF. Our results demonstrate an impaired crosstalk of diabetic skin cells and sensory neurons favouring hypo-innervation. We suggest that reduced methylglyoxal detoxification contributes to an impaired neurocutaneous interaction in diabetic skin.
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Affiliation(s)
- Olga Reichert
- Research and Development, Beiersdorf AG, Hamburg, Germany
| | - Thomas Fleming
- Department of Medicine I and Clinical Chemistry, University Hospital Heidelberg, Heidelberg, Germany
| | - Gitta Neufang
- Research and Development, Beiersdorf AG, Hamburg, Germany
| | - Martin Schmelz
- Department of Anesthesiology Mannheim, Heidelberg University, Mannheim, Germany
| | - Harald Genth
- Institute of Toxicology, Hannover Medical School, Hannover, Germany
| | - Volkhard Kaever
- Institute of Pharmacology, Hannover Medical School, Hannover, Germany
| | - Horst Wenck
- Research and Development, Beiersdorf AG, Hamburg, Germany
| | - Franz Stäb
- Research and Development, Beiersdorf AG, Hamburg, Germany
| | - Lara Terstegen
- Research and Development, Beiersdorf AG, Hamburg, Germany
| | - Ludger Kolbe
- Research and Development, Beiersdorf AG, Hamburg, Germany
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46
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Daugherty DJ, Marquez A, Calcutt NA, Schubert D. A novel curcumin derivative for the treatment of diabetic neuropathy. Neuropharmacology 2018; 129:26-35. [PMID: 29122628 PMCID: PMC5841546 DOI: 10.1016/j.neuropharm.2017.11.007] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 11/03/2017] [Accepted: 11/04/2017] [Indexed: 12/16/2022]
Abstract
Neuropathy is a common complication of long-term diabetes. Proposed mechanisms of neuronal damage caused by diabetes that are downstream of hyperglycemia and/or loss of insulin signaling include ischemic hypoxia, inflammation and loss of neurotrophic support. The curcumin derivative J147 is a potent neurogenic and neuroprotective drug candidate initially developed for the treatment of neurodegenerative conditions associated with aging that impacts many pathways implicated in the pathogenesis of diabetic neuropathy. Here, we demonstrate efficacy of J147 in ameliorating multiple indices of neuropathy in the streptozotocin-induced mouse model of type 1 diabetes. Diabetes was determined by blood glucose, HbA1c, and insulin levels and efficacy of J147 by behavioral, physiologic, biochemical, proteomic, and transcriptomic assays. Biological efficacy of systemic J147 treatment was confirmed by its capacity to decrease TNFα pathway activation and several other markers of neuroinflammation in the CNS. Chronic oral treatment with J147 protected the sciatic nerve from progressive diabetes-induced slowing of large myelinated fiber conduction velocity while single doses of J147 rapidly and transiently reversed established touch-evoked allodynia. Conduction slowing and allodynia are clinically relevant markers of early diabetic neuropathy and neuropathic pain, respectively. RNA expression profiling suggests that one of the pathways by which J147 imparts its protection against diabetic induced neuropathy may be through activation of the AMP kinase pathway. The diverse biological and therapeutic effects of J147 suggest it as an alternative to the polypharmaceutical approaches required to treat the multiple pathogenic mechanisms that contribute to diabetic neuropathy.
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Affiliation(s)
| | | | | | - David Schubert
- The Salk Institute for Biological Studies, La Jolla, CA, USA
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47
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Zeng J, Xu Y, Shi Y, Jiang C. Inflammation role in sensory neuropathy in Chinese patients with diabetes/prediabetes. Clin Neurol Neurosurg 2018; 166:136-140. [PMID: 29414152 DOI: 10.1016/j.clineuro.2018.01.031] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2017] [Revised: 12/14/2017] [Accepted: 01/28/2018] [Indexed: 01/31/2023]
Abstract
OBJECTIVES Prediabetes involves people with glucose-metabolism impairment, and is related to different diabetic complications, like peripheral neuropathy. We aimed to explore the relationship among inflammatory (tumor necrosis factor alpha [TNFα]) and antiinflammatory (interleukin 10 [IL10]) cytokines as well as neuropathy of very distal-sensory-nerves in Chinese patients with prediabetes/diabetes. PATIENTS AND METHODS In the present study, 55 patients having prediabetes, 55 patients having type 2 diabetes mellitus (DM), and 48 controls were included. TNFα, HbA1c, and IL10 plasma levels were measured. Electrodiagnosis was conducted on dorsal-sural/medial-plantar sensory nerve, that is most distal feet sensory-nerves. RESULTS Nerve conduction test (NCT) irregularities of dorsal-sural/medial-plantar sensory nerve were considerably greater in patients with prediabetes or diabetes. The means of TNFα levels demonstrated a significant increase in patients with diabetes when compared to prediabetes patients as well as controls showed a significant decrease in patients with prediabetes and diabetes contrasted with controls. No significant contrast with respect to serum biomarkers among patients having regular as well as irregular medial-plantar/dorsal-sural NCT was noted. Critical correlationship among TNFα as well as HbA1c with symptoms severity as well as disability while negative correlations of IL10 with neuropathy severity was noted. Biomarker levels of TNFα, IL10, and HbA1c were noted to differ significantly among patients without/with neuropathy. CONCLUSION All in all, the proinflammatory phase appears to start from initial pre-clinical phases, sometime prior to advancement of diabetes. The higher neuropathy frequency in patients with prediabetes indicates conceivable causative impact; although, the prospective part of inflammation in pathogenetics of peripheral neuropathy requires more elucidation.
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Affiliation(s)
- Jing Zeng
- Department of Neurology, Zhongshan Traditional Chinese Medicine Hospital, Zhongshan, 528400, China.
| | - Yalin Xu
- Department of Rehabilitation, Department of Rehabilitation Second people's Hospital of Jiangmen, Jiangmen, Guangdong 529030, China.
| | - Yao Shi
- Rehabilitation Specialty, Jinan University, Guangzhou, 510632, China.
| | - Chenyin Jiang
- Rehabilitation Specialty, Jinan University, Guangzhou, 510632, China.
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48
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Gwon SY, Rhee KJ, Sung HJ. Gene and Protein Expression Profiles in a Mouse Model of Collagen-Induced Arthritis. Int J Med Sci 2018; 15:77-85. [PMID: 29333090 PMCID: PMC5765742 DOI: 10.7150/ijms.22345] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2017] [Accepted: 10/12/2017] [Indexed: 12/13/2022] Open
Abstract
The risk of rheumatoid arthritis (RA), an autoimmune disease, in the elderly population increases along with that of atherosclerosis, cardiovascular disease, type 2 diabetes, and Alzheimer's disease. Identifying specific biomarkers for RA can clarify the underlying molecular mechanisms and can aid diagnosis and patient care. To this end, the present study investigated the genes and proteins that are differentially expressed in RA using a mouse collagen-induced arthritis (CIA) model. We performed gene microarray and proteome array analyses using blood samples from the mice and found that 50 genes and 24 proteins were upregulated and 48 genes were downregulated by more than 2-fold in the CIA model relative to the control. The gene microarray and proteome array results were validated by evaluating the expression levels of select genes and proteins by real-time PCR and western blotting, respectively. We found that the level of integrin α2, which has not been previously reported as a biomarker of RA, was significantly increased in CIA mice as compared to controls. These findings provide a set of novel biomarkers that can be useful for diagnosing and evaluating the progression of RA.
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Affiliation(s)
- Sun-Yeong Gwon
- Department of Biomedical Laboratory Science, College of Health Science, Eulji University, Seongnam-si, Gyeonggi-do, 13135, Republic of Korea.,Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University at Wonju, Wonju, Gangwon-do 26493, Republic of Korea
| | - Ki-Jong Rhee
- Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University at Wonju, Wonju, Gangwon-do 26493, Republic of Korea
| | - Ho Joong Sung
- Department of Biomedical Laboratory Science, College of Health Science, Eulji University, Seongnam-si, Gyeonggi-do, 13135, Republic of Korea.,Department of Senior Healthcare, BK21 plus Program, Graduated School, Eulji University, Daejeon, 34824, Republic of Korea
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49
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Liu XS, Fan B, Szalad A, Jia L, Wang L, Wang X, Pan W, Zhang L, Zhang R, Hu J, Zhang XM, Chopp M, Zhang ZG. MicroRNA-146a Mimics Reduce the Peripheral Neuropathy in Type 2 Diabetic Mice. Diabetes 2017; 66:3111-3121. [PMID: 28899883 PMCID: PMC5697943 DOI: 10.2337/db16-1182] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 09/02/2017] [Indexed: 12/27/2022]
Abstract
MicroRNA-146a (miR-146a) regulates multiple immune diseases. However, the role of miR-146a in diabetic peripheral neuropathy (DPN) has not been investigated. We found that mice (db/db) with type 2 diabetes exhibited substantial downregulation of miR-146a in sciatic nerve tissue. Systemic administration of miR-146a mimics to diabetic mice elevated miR-146a levels in plasma and sciatic nerve tissue and substantially increased motor and sensory nerve conduction velocities by 29 and 11%, respectively, and regional blood flow by 50% in sciatic nerve tissue. Treatment with miR-146a mimics also considerably decreased the response in db/db mice to thermal stimuli thresholds. Histopathological analysis showed that miR-146a mimics markedly augmented the density of fluorescein isothiocyanate-dextran-perfused blood vessels and increased the number of intraepidermal nerve fibers, myelin thickness, and axonal diameters of sciatic nerves. In addition, miR-146a treatment reduced and increased classically and alternatively activated macrophage phenotype markers, respectively. Analysis of miRNA target array revealed that miR-146a mimics greatly suppressed expression of many proinflammatory genes and downstream related cytokines. Collectively, our data indicate that treatment of diabetic mice with miR-146a mimics robustly reduces DPN and that suppression of hyperglycemia-induced proinflammatory genes by miR-146a mimics may underlie its therapeutic effect.
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Affiliation(s)
- Xian Shuang Liu
- Department of Neurology, Henry Ford Health System, Detroit, MI
| | - Baoyan Fan
- Department of Neurology, Henry Ford Health System, Detroit, MI
| | | | - Longfei Jia
- Department of Neurology, Henry Ford Health System, Detroit, MI
| | - Lei Wang
- Department of Neurology, Henry Ford Health System, Detroit, MI
| | - Xinli Wang
- Department of Neurology, Henry Ford Health System, Detroit, MI
| | - Wanlong Pan
- Department of Neurology, Henry Ford Health System, Detroit, MI
- Sichuan Key Laboratory of Medical Imaging and Department of Microbiology and Immunology, North Sichuan Medical College, Nanchong, Sichuan, China
| | - Li Zhang
- Department of Neurology, Henry Ford Health System, Detroit, MI
| | - Ruilan Zhang
- Department of Neurology, Henry Ford Health System, Detroit, MI
| | - Jiani Hu
- Department of Radiology, Wayne State University, Detroit, MI
| | - Xiao Ming Zhang
- Sichuan Key Laboratory of Medical Imaging and Department of Radiology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, China
| | - Michael Chopp
- Department of Neurology, Henry Ford Health System, Detroit, MI
- Department of Physics, Oakland University, Rochester, MI
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50
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Zupan B, Liu B, Taki F, Toth JG, Toth M. Maternal Brain TNF-α Programs Innate Fear in the Offspring. Curr Biol 2017; 27:3859-3863.e3. [PMID: 29199072 DOI: 10.1016/j.cub.2017.10.071] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 10/23/2017] [Accepted: 10/30/2017] [Indexed: 12/11/2022]
Abstract
Tumor necrosis factor alpha (TNF-α) is a cytokine that not only coordinates local and systemic immune responses [1, 2] but also regulates neuronal functions. Most prominently, glia-derived TNF-α has been shown to regulate homeostatic synaptic scaling [3-6], but TNF-α-null mice exhibited no apparent cognitive or emotional abnormalities. Instead, we found a TNF-α-dependent intergenerational effect, as mothers with a deficit in TNF-α programmed their offspring to exhibit low innate fear. Cross-fostering and conditional knockout experiments indicated that a TNF-α deficit in the maternal brain, rather than in the hematopoietic system, and during gestation was responsible for the low-fear offspring phenotype. The level of innate fear governs the balance between exploration/foraging and avoidance of predators and is thus fundamentally important in adaptation, fitness, and survival [7]. Because maternal exercise and activity are known to reduce both brain TNF-α [8] and offspring innate fear [9], whereas maternal stress has been reported to increase brain TNF-α [10] and offspring fear and anxiety [11, 12], maternal brain TNF-α may report environmental conditions to promote offspring behavioral adaptation to their anticipated postnatal environment.
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Affiliation(s)
- Bojana Zupan
- Department of Pharmacology, Weill Cornell Medical College, 1300 York Avenue, New York, NY 10065, USA; Psychological Science Department, Vassar College, 124 Raymond Avenue, Poughkeepsie, NY 12604, USA
| | - Bingfang Liu
- Department of Pharmacology, Weill Cornell Medical College, 1300 York Avenue, New York, NY 10065, USA
| | - Faten Taki
- Department of Pharmacology, Weill Cornell Medical College, 1300 York Avenue, New York, NY 10065, USA
| | - Judit Gal Toth
- Department of Pharmacology, Weill Cornell Medical College, 1300 York Avenue, New York, NY 10065, USA
| | - Miklos Toth
- Department of Pharmacology, Weill Cornell Medical College, 1300 York Avenue, New York, NY 10065, USA.
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