1
|
Tripathi S, Nath M, Misra S, Kumar P. From A to E: Uniting vitamins against stroke risk-A systematic review and network meta-analysis. Eur J Clin Invest 2024; 54:e14165. [PMID: 38291560 DOI: 10.1111/eci.14165] [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: 09/07/2023] [Revised: 12/05/2023] [Accepted: 01/07/2024] [Indexed: 02/01/2024]
Abstract
BACKGROUND AND AIM Stroke represents a significant public health challenge, necessitating the exploration of preventive measures. This network meta-analysis aimed to assess the efficacy of different vitamin treatments compared to a placebo in preventing stroke. METHODS A systematic electronic search in databases including PubMed, EmBASE, Web of Science, clinicaltrials.gov, and Google Scholar until 31 May 2023 was conducted, to identify published studies investigating the association between vitamin intake and the risk of stroke. Pooled risk ratio (RR) with 95% confidence intervals (CIs) was calculated using a frequentist network meta-analysis. Furthermore, we ranked vitamins based on p-scores, facilitating a comparative assessment of their effectiveness in preventing stroke. RESULTS A total of 56 studies, including 17 randomized controlled trials (RCTs) and 39 cohort studies were analyzed. Direct estimates obtained from network meta-analysis, we found that vitamin A (RR: .81 [.72-.91]), vitamin B-complex (RR: .85 [.74-.97]), vitamin B6 (RR: 79 [.68-.92]), folate (RR: .86 [.75-.97]), vitamin C (RR: .77 [.70-.85]) and vitamin D (RR: .73 [.64-.83]) were significantly associated with a decreased stroke risk. However, no significant association was observed for vitamin B2, vitamin B12, and vitamin E. Subsequent to network meta-analysis, vitamins were ranked in decreasing order of their efficacy in stroke prevention based on p-score, with vitamin D (p-score = .91), vitamin C (p-score = .79), vitamin B6 (p-score = .70), vitamin A (p-score = .65), vitamin B-complex (p-score = .53), folate (p-score = .49), vitamin B2 (p-score = .39), vitamin E (p-score = .28), vitamin B12 (.13) and placebo (.10). CONCLUSION Our study has established noteworthy connections between vitamin A, vitamin B-complex, vitamin B6, folate, vitamin C, and vitamin D in the realm of stroke prevention. These findings add substantial weight to the accumulating evidence supporting the potential advantages of vitamin interventions in mitigating the risk of stroke. However, to solidify and validate these observations, additional research is imperative. Well-designed clinical trials or cohort studies are needed to further explore these associations and formulate clear guidelines for incorporating vitamin supplementation into effective stroke prevention strategies.
Collapse
Affiliation(s)
- Shashank Tripathi
- Department of Neurology, All India Institute of Medical Sciences, New Delhi, India
| | - Manabesh Nath
- Department of Neurology, All India Institute of Medical Sciences, New Delhi, India
| | - Shubham Misra
- Department of Neurology, Yale University, New Haven, Connecticut, USA
| | - Pradeep Kumar
- Clinical Research Unit, All India Institute of Medical Sciences, New Delhi, India
| |
Collapse
|
2
|
Farashi S, Shahidi S, Sarihi A, Zarei M. Association of vitamin A and its organic compounds with stroke - a systematic review and meta-analysis. Nutr Neurosci 2023; 26:960-974. [PMID: 36004815 DOI: 10.1080/1028415x.2022.2111746] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Abstract
PURPOSE The main purpose of this systematic review was to evaluate the association between the stroke (risk of stroke and the mortality due to stroke) and vitamin A, its organic compounds and its provitamins. METHOD Major databases including PubMed, Scopus, and Web of Science were searched. Studies with human samples were included for risk assessment. The association was assessed using odds ratio (log(OR)) and a random-effect model. I2 statistic, variance (tau2) and prediction interval were used for heterogeneity assessment. The funnel plot was used for publication bias. RESULTS Twenty-one studies including 5789 stroke patients were retrieved. Twenty studies had sufficient information for quantitative analyses. The pooled effect showed an inverse association between vitamin A and its organic compound with the risk of stroke (log(OR) = -0.46 95%CI (-0.81;-0.12)) and with the risk of mortality due to stroke (log(OR) = -0.39 95%CI (-0.74;-0.04)). However, according to subgroup analyses, the association was dependent on the compound in a way that retinol and beta-carotene were the most effective compounds. The effects of several confounding factors and the threshold levels for vitamin A and its organic compound on the effectiveness were discussed. CONCLUSION Insufficiency of retinol and beta-carotene significantly increased the risk of stroke; however, due to heterogeneity between studies more studies are needed for evaluating clinical significance of this outcome.
Collapse
Affiliation(s)
- Sajjad Farashi
- Neurophysiology Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
- Autism Spectrum Disorders Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Siamak Shahidi
- Neurophysiology Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
- Department of Physiology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Abdolrahman Sarihi
- Neurophysiology Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
- Department of Physiology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Mohammad Zarei
- Neurophysiology Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
- Department of Physiology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| |
Collapse
|
3
|
De la Merced-García DS, Sánchez-Barrera Á, Hernández-Yonca J, Mancilla I, García-López G, Díaz NF, Terrazas LI, Molina-Hernández A. Increased Nuclear FOXP2 Is Related to Reduced Neural Stem Cell Number and Increased Neurogenesis in the Dorsal Telencephalon of Embryos of Diabetic Rats through Histamine H 1 Receptors. Cells 2023; 12:cells12030510. [PMID: 36766852 PMCID: PMC9914739 DOI: 10.3390/cells12030510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 12/27/2022] [Indexed: 02/09/2023] Open
Abstract
Diabetic rat embryos have increased cortical neurogenesis and neuron maturation, and their offspring presented altered neuron polarity, lamination, and diminished neuron excitability. The FOXP2 overexpression results in higher cortical neurogenesis by increasing the transition of radial glia to the intermediate progenitor. Similarly, histamine through H1-receptor activation increases cortical neuron differentiation. Indeed, blocking the H1-receptor by the systemic administration of chlorpheniramine to diabetic pregnant rats prevents increased neurogenesis. Here, we explore the relationship between the H1-receptor and FOXP2 on embryo neurogenesis from diabetic dams. Through qRT-PCR, Western blot, immunohistofluorescence, and flow cytometry, we showed an increased FOXP2 expression and nuclear localization, a reduced Nestin expression and -positive cells number, and a higher PKCα expression in the cortical neuroepithelium of fourteen-day-old embryos from diabetic rats. Interestingly, this scenario was prevented by the chlorpheniramine systemic administration to diabetic pregnant rats at embryo day twelve. These data, together with the bioinformatic analysis, suggest that higher H1-receptor activity in embryos under high glucose increases FOXP2 nuclear translocation, presumably through PKCα phosphorylation, impairing the transition of radial glia to intermediate progenitor and increasing neuron differentiation in embryos of diabetic rats.
Collapse
Affiliation(s)
- Diana Sarahi De la Merced-García
- Departamento de Fisiología y Desarrollo Celular, Instituto Nacional de Perinatología Isidro Espinosa de los Reyes, Montes Urales 800, Miguel Hidalgo, Ciudad de Mexico 11000, Mexico
| | - Ángel Sánchez-Barrera
- Unidad de Biomedicina, Facultad de Estudios Superiores (FES)-Iztacala, Universidad Nacional Autónoma de México (UNAM), Av. de los Barrios, Los Reyes Iztacala, Tlanepantla 54090, Mexico
| | - Juan Hernández-Yonca
- Departamento de Fisiología y Desarrollo Celular, Instituto Nacional de Perinatología Isidro Espinosa de los Reyes, Montes Urales 800, Miguel Hidalgo, Ciudad de Mexico 11000, Mexico
| | - Ismael Mancilla
- Departamento de Infectología, Instituto Nacional de Perinatología Isidro Espinosa de los Reyes, Montes Urales 800, Miguel Hidalgo, Ciudad de Mexico 11000, Mexico
| | - Guadalupe García-López
- Departamento de Fisiología y Desarrollo Celular, Instituto Nacional de Perinatología Isidro Espinosa de los Reyes, Montes Urales 800, Miguel Hidalgo, Ciudad de Mexico 11000, Mexico
| | - Néstor Fabián Díaz
- Departamento de Fisiología y Desarrollo Celular, Instituto Nacional de Perinatología Isidro Espinosa de los Reyes, Montes Urales 800, Miguel Hidalgo, Ciudad de Mexico 11000, Mexico
| | - Luis Ignacio Terrazas
- Departamento de Infectología, Instituto Nacional de Perinatología Isidro Espinosa de los Reyes, Montes Urales 800, Miguel Hidalgo, Ciudad de Mexico 11000, Mexico
- Laboratorio Nacional en Salud FES-Iztacala, Universidad Nacional Autónoma de México (UNAM), Av. de los Barrios, Los Reyes Iztacala, Tlanepantla 54090, Mexico
| | - Anayansi Molina-Hernández
- Departamento de Fisiología y Desarrollo Celular, Instituto Nacional de Perinatología Isidro Espinosa de los Reyes, Montes Urales 800, Miguel Hidalgo, Ciudad de Mexico 11000, Mexico
- Correspondence:
| |
Collapse
|
4
|
Viroel FJM, Laurino LF, Caetano ÉLA, Jozala AF, Spim SRV, Pickler TB, Sercundes MK, Gomes MC, Hataka A, Grotto D, Gerenutti M. Ganoderma lucidum Modulates Glucose, Lipid Peroxidation and Hepatic Metabolism in Streptozotocin-Induced Diabetic Pregnant Rats. Antioxidants (Basel) 2022; 11:1035. [PMID: 35739932 PMCID: PMC9219838 DOI: 10.3390/antiox11061035] [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: 03/15/2022] [Revised: 04/08/2022] [Accepted: 04/19/2022] [Indexed: 11/30/2022] Open
Abstract
The consumption of functional foods, such as mushrooms, apparently influences Gestational Diabetes Mellitus (GDM), and brings benefits to maternal-fetal health. Ganoderma lucidum contains a variety of bioactive compounds, such as polysaccharides, proteins and polyphenols that are able to control blood glucose and be used in anti-cancer therapy. We aimed to evaluate the effects of the consumption of Ganoderma lucidum (Gl) on maternal-fetal outcomes in streptozotocin-induced GDM (GDM-STZ). Pregnant rats were exposed to Gl (100 mg/kg/day) before and after the induction of GDM-STZ (single dose 40 mg/kg) on the eighth pregnancy day. Biochemical and oxidative stress parameters, reproductive performance and morphometry of fetuses were assessed. Gl reduced the glycemic response in the oral glucose tolerance test. Moreover, Gl decreased AST and ALT activities. GDM increased lipid peroxidation, which was reverted by Gl. Catalase and glutathione peroxidase activities were decreased in GDM and the administered Gl after the fetus implantation increased catalase activity. Measurements of the fetal head, thorax, craniocaudal and tail showed greater values in fetuses from rats exposed to Gl compared to GDM. Ganoderma lucidum has an encouraging nutritional and medicinal potential against GDM, since it modifies glucose metabolism, reduces lipid peroxidation, and has protective effects in fetuses born from GDM dams.
Collapse
Affiliation(s)
- Fabia Judice Marques Viroel
- Department of Pharmacy, University of Sorocaba, Sorocaba 18023-000, Brazil; (F.J.M.V.); (L.F.L.); (É.L.A.C.); (A.F.J.); (S.R.V.S.); (T.B.P.); (M.K.S.)
| | - Leticia Favara Laurino
- Department of Pharmacy, University of Sorocaba, Sorocaba 18023-000, Brazil; (F.J.M.V.); (L.F.L.); (É.L.A.C.); (A.F.J.); (S.R.V.S.); (T.B.P.); (M.K.S.)
| | - Érika Leão Ajala Caetano
- Department of Pharmacy, University of Sorocaba, Sorocaba 18023-000, Brazil; (F.J.M.V.); (L.F.L.); (É.L.A.C.); (A.F.J.); (S.R.V.S.); (T.B.P.); (M.K.S.)
| | - Angela Faustino Jozala
- Department of Pharmacy, University of Sorocaba, Sorocaba 18023-000, Brazil; (F.J.M.V.); (L.F.L.); (É.L.A.C.); (A.F.J.); (S.R.V.S.); (T.B.P.); (M.K.S.)
| | - Sara Rosicler Vieira Spim
- Department of Pharmacy, University of Sorocaba, Sorocaba 18023-000, Brazil; (F.J.M.V.); (L.F.L.); (É.L.A.C.); (A.F.J.); (S.R.V.S.); (T.B.P.); (M.K.S.)
| | - Thaisa Borim Pickler
- Department of Pharmacy, University of Sorocaba, Sorocaba 18023-000, Brazil; (F.J.M.V.); (L.F.L.); (É.L.A.C.); (A.F.J.); (S.R.V.S.); (T.B.P.); (M.K.S.)
| | - Michelle Klein Sercundes
- Department of Pharmacy, University of Sorocaba, Sorocaba 18023-000, Brazil; (F.J.M.V.); (L.F.L.); (É.L.A.C.); (A.F.J.); (S.R.V.S.); (T.B.P.); (M.K.S.)
| | - Marcela C. Gomes
- Department of Veterinary Clinical Sciences, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu 18610-307, Brazil; (M.C.G.); (A.H.)
| | - Alessandre Hataka
- Department of Veterinary Clinical Sciences, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu 18610-307, Brazil; (M.C.G.); (A.H.)
| | - Denise Grotto
- Department of Pharmacy, University of Sorocaba, Sorocaba 18023-000, Brazil; (F.J.M.V.); (L.F.L.); (É.L.A.C.); (A.F.J.); (S.R.V.S.); (T.B.P.); (M.K.S.)
| | - Marli Gerenutti
- Departament of Biomaterials and Regenerative Medicine, School of Medicine, Pontifical Catholic University of São Paulo–PUC SP, Sorocaba 18030-070, Brazil;
| |
Collapse
|
5
|
Harkins D, Cooper HM, Piper M. The role of lipids in ependymal development and the modulation of adult neural stem cell function during aging and disease. Semin Cell Dev Biol 2020; 112:61-68. [PMID: 32771376 DOI: 10.1016/j.semcdb.2020.07.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 06/24/2020] [Accepted: 07/29/2020] [Indexed: 01/10/2023]
Abstract
Within the adult mammalian central nervous system, the ventricular-subventricular zone (V-SVZ) lining the lateral ventricles houses neural stem cells (NSCs) that continue to produce neurons throughout life. Developmentally, the V-SVZ neurogenic niche arises during corticogenesis following the terminal differentiation of telencephalic radial glial cells (RGCs) into either adult neural stem cells (aNSCs) or ependymal cells. In mice, these two cellular populations form rosettes during the late embryonic and early postnatal period, with ependymal cells surrounding aNSCs. These aNSCs and ependymal cells serve a number of key purposes, including the generation of neurons throughout life (aNSCs), and acting as a barrier between the CSF and the parenchyma and promoting CSF bulk flow (ependymal cells). Interestingly, the development of this neurogenic niche, as well as its ongoing function, has been shown to be reliant on different aspects of lipid biology. In this review we discuss the developmental origins of the rodent V-SVZ neurogenic niche, and highlight research which has implicated a role for lipids in the physiology of this part of the brain. We also discuss the role of lipids in the maintenance of the V-SVZ niche, and discuss new research which has suggested that alterations to lipid biology could contribute to ependymal cell dysfunction in aging and disease.
Collapse
Affiliation(s)
- Danyon Harkins
- School of Biomedical Sciences, The University of Queensland, Brisbane, 4072, Australia
| | - Helen M Cooper
- Queensland Brain Institute, The University of Queensland, Brisbane, 4072, Australia
| | - Michael Piper
- School of Biomedical Sciences, The University of Queensland, Brisbane, 4072, Australia; Queensland Brain Institute, The University of Queensland, Brisbane, 4072, Australia.
| |
Collapse
|
6
|
Xu M, Xu L, Du H, Shan W, Feng J, Zhai G, Yang X. Decreased Serum Retinoic Acid May Predict Poor Outcome in Ischemic Stroke Patients. Neuropsychiatr Dis Treat 2020; 16:1483-1491. [PMID: 32606701 PMCID: PMC7293911 DOI: 10.2147/ndt.s254591] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 05/16/2020] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND AND AIMS Decreased serum retinoic acid (RA) levels have been shown to be linked with increased mortality in cardiovascular diseases. This study aimed to investigate the relationship between serum RA and 3-month functional outcome after ischemic stroke. METHODS Between January 2019 and September 2019, we prospectively recruited ischemic stroke patients within 24 hrs of symptom onset. Serum RA levels were measured for all patients at admission. The primary outcome was defined as poor functional outcome (modified Rankin Scale 3-6) at 90 days. The secondary outcome was defined as early neurological deterioration (END), which is considered as an increase of ≥1 point in motor power or total National Institutes of Health Stroke Scale score of ≥2 points within 7 days. RESULTS A total of 217 patients were included in the analysis. The median RA levels were 2.9 ng/mL. Ninety-four (43.3%) and 65 (30.0%) patients experienced 3-month poor outcome and END, respectively. After adjusted for potential confounders, decreased levels of serum RA were associated with a higher risk of poor outcome (P for trend = 0.001) and END (P for trend = 0.002). Adding RA quartile to the existing risk factors improved risk prediction for poor outcome [net reclassification improvement (NRI) = 42.6%, P = 0.001; integrated discrimination improvement (IDI) = 5.7%, P = 0.001] and END (NRI index = 45.4%, P = 0.001; IDI = 4.3%; P = 0.005). CONCLUSION Low serum RA levels at baseline were associated with poor prognosis at 90 days after ischemic stroke, suggesting that RA may be a potential prognostic biomarker for ischemic stroke.
Collapse
Affiliation(s)
- Mengshi Xu
- Department of Neurology, Suzhou Ninth People's Hospital, Suzhou, Jiangsu 215200, People's Republic of China
| | - Liang Xu
- Department of Anesthesiology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215000, People's Republic of China
| | - Huaping Du
- Department of Neurology, Suzhou Ninth People's Hospital, Suzhou, Jiangsu 215200, People's Republic of China
| | - Wanying Shan
- Department of Neurology, Suzhou Ninth People's Hospital, Suzhou, Jiangsu 215200, People's Republic of China
| | - Jie Feng
- Department of Neurology, Suzhou Ninth People's Hospital, Suzhou, Jiangsu 215200, People's Republic of China
| | - Guojie Zhai
- Department of Neurology, Suzhou Ninth People's Hospital, Suzhou, Jiangsu 215200, People's Republic of China
| | - Xiuyan Yang
- Department of Neurology, Suzhou Ninth People's Hospital, Suzhou, Jiangsu 215200, People's Republic of China
| |
Collapse
|
7
|
Lee HR, Kong SY, Sung SH, Kim HJ. DA-9801 and its saponins, dioscin and protodioscin, protect primary cortical neurons from hyperglycemia-induced neurotoxicity. J Funct Foods 2019. [DOI: 10.1016/j.jff.2019.01.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
|
8
|
Autism spectrum disorders: let's talk about glucose? Transl Psychiatry 2019; 9:51. [PMID: 30705254 PMCID: PMC6355780 DOI: 10.1038/s41398-019-0370-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Revised: 12/17/2018] [Accepted: 01/02/2019] [Indexed: 11/17/2022] Open
Abstract
Autism spectrum disorders (ASD) are characterized by disconnectivity due to disordered neuronal migration, and by neuronal mitochondrial dysfunction. Different pathways involved in neuronal migration are affected by intrauterine hyperglycemia and hyperinsulinemia, while prolonged neonatal hypoglycemia may cause mitochondrial dysfunction. Our hypothesis was that conditions leading to intrauterine hyperglycemia or neonatal hypoglycemia would influence ASD pathogenesis. In this study, we identified risk factors for ASD by searching PubMed with the MeSH terms "autism spectrum disorder" and "risk factors". We then analyzed the relationship between the risk factors and glucose abnormalities in the mother and the offspring. The relationship between glucose abnormalities and risk factors such as obesity, excessive maternal weight gain, or diabetes mellitus is evident. For risk factors such as malformations or exposure to selective serotonin reuptake inhibitors, the relationship is speculative. In rodents, for example, intrauterine hyperglycemia is associated with malformations, independent of maternal diabetes. In their turn, selective serotonin reuptake inhibitors reduce the signs of neonatal hypoglycemia. Going undetected, prolonged hypoglycemia may harm the neonatal brain. Importantly, our group demonstrated that either high-carbohydrate diets or physical inactivity the day before delivery may influence neonatal glycemia. In that study, of 158 neonates selected to be screened according to maternal lifestyle risk factors, 48 had hypoglycemia. Of note, five of them had not been identified with current screening programs. Controlled studies are needed to clarify whether maternal interventions aiming at maintaining glycemic control, together with screening programs for neonatal hypoglycemia based on maternal lifestyle risk factors and on exposure to specific prenatal medications can reduce the prevalence of ASD.
Collapse
|
9
|
Li R, Tang X, Xu S, Chen Q, Chen B, Liu S, Li B, Li W, Yao Y, Wu W, Liu H. SC1 sustains the self-renewal capacity and pluripotency of chicken blastodermal cells by inhibiting the phosphorylation of ERK1 and promoting the phosphorylation of Akt. Reprod Domest Anim 2018; 53:1052-1059. [DOI: 10.1111/rda.13202] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 04/03/2018] [Indexed: 01/09/2023]
Affiliation(s)
- Rongyang Li
- College of Animal Sciences and Technology; Nanjing Agricultural University; Nanjing China
| | - Xiaochuan Tang
- College of Animal Sciences and Technology; Guang Xi University; Nanning China
| | - Shiyong Xu
- College of Animal Sciences and Technology; Jingling Institute of Technology; Nanjing China
| | - Qing Chen
- College of Animal Sciences and Technology; Jingling Institute of Technology; Nanjing China
| | - Baobao Chen
- College of Animal Sciences and Technology; Nanjing Agricultural University; Nanjing China
| | - Shuo Liu
- College of Animal Sciences and Technology; Nanjing Agricultural University; Nanjing China
| | - Bojiang Li
- College of Animal Sciences and Technology; Nanjing Agricultural University; Nanjing China
| | - Weijian Li
- College of Animal Sciences and Technology; Nanjing Agricultural University; Nanjing China
| | - Yilong Yao
- College of Animal Sciences and Technology; Nanjing Agricultural University; Nanjing China
| | - Wangjun Wu
- College of Animal Sciences and Technology; Nanjing Agricultural University; Nanjing China
| | - Honglin Liu
- College of Animal Sciences and Technology; Nanjing Agricultural University; Nanjing China
| |
Collapse
|
10
|
Han J, Weisbrod RM, Shao D, Watanabe Y, Yin X, Bachschmid MM, Seta F, Janssen-Heininger YMW, Matsui R, Zang M, Hamburg NM, Cohen RA. The redox mechanism for vascular barrier dysfunction associated with metabolic disorders: Glutathionylation of Rac1 in endothelial cells. Redox Biol 2016; 9:306-319. [PMID: 27693992 PMCID: PMC5045950 DOI: 10.1016/j.redox.2016.09.003] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 09/08/2016] [Accepted: 09/09/2016] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Oxidative stress is implicated in increased vascular permeability associated with metabolic disorders, but the underlying redox mechanism is poorly defined. S-glutathionylation, a stable adduct of glutathione with protein sulfhydryl, is a reversible oxidative modification of protein and is emerging as an important redox signaling paradigm in cardiovascular physiopathology. The present study determines the role of protein S-glutathionylation in metabolic stress-induced endothelial cell permeability. METHODS AND RESULTS In endothelial cells isolated from patients with type-2 diabetes mellitus, protein S-glutathionylation level was increased. This change was also observed in aortic endothelium in ApoE deficient (ApoE-/-) mice fed on Western diet. Metabolic stress-induced protein S-glutathionylation in human aortic endothelial cells (HAEC) was positively correlated with elevated endothelial cell permeability, as reflected by disassembly of cell-cell adherens junctions and cortical actin structures. These impairments were reversed by adenoviral overexpression of a specific de-glutathionylation enzyme, glutaredoxin-1 in cultured HAECs. Consistently, transgenic overexpression of human Glrx-1 in ApoE-/- mice fed the Western diet attenuated endothelial protein S-glutathionylation, actin cytoskeletal disorganization, and vascular permeability in the aorta. Mechanistically, glutathionylation and inactivation of Rac1, a small RhoGPase, were associated with endothelial hyperpermeability caused by metabolic stress. Glutathionylation of Rac1 on cysteine 81 and 157 located adjacent to guanine nucleotide binding site was required for the metabolic stress to inhibit Rac1 activity and promote endothelial hyperpermeability. CONCLUSIONS Glutathionylation and inactivation of Rac1 in endothelial cells represent a novel redox mechanism of vascular barrier dysfunction associated with metabolic disorders.
Collapse
Affiliation(s)
- Jingyan Han
- Vascular Biology Section, Evans Department of Medicine, Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA, USA.
| | - Robert M Weisbrod
- Evans Department of Medicine and the Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA, USA
| | - Di Shao
- Vascular Biology Section, Evans Department of Medicine, Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA, USA
| | - Yosuke Watanabe
- Vascular Biology Section, Evans Department of Medicine, Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA, USA
| | - Xiaoyan Yin
- Framingham Heart Study, Boston University School of Medicine, Boston, MA, USA
| | - Markus M Bachschmid
- Vascular Biology Section, Evans Department of Medicine, Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA, USA
| | - Francesca Seta
- Vascular Biology Section, Evans Department of Medicine, Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA, USA
| | | | - Reiko Matsui
- Vascular Biology Section, Evans Department of Medicine, Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA, USA
| | - Mengwei Zang
- Department of Molecular Medicine, Barshop Institute for Longevity and Aging Studies, University of Texas Health Science Center, South Texas Veterans Health Care System, San Antonio, TX, USA
| | - Naomi M Hamburg
- Evans Department of Medicine and the Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA, USA
| | - Richard A Cohen
- Vascular Biology Section, Evans Department of Medicine, Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA, USA
| |
Collapse
|
11
|
Bioactive Compounds and Their Neuroprotective Effects in Diabetic Complications. Nutrients 2016; 8:nu8080472. [PMID: 27483315 PMCID: PMC4997385 DOI: 10.3390/nu8080472] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 07/22/2016] [Accepted: 07/27/2016] [Indexed: 12/14/2022] Open
Abstract
Hyperglycemia, hyperlipidemia and impaired insulin signaling during the development of diabetes can cause diabetic complications, such as diabetic neuropathy, resulting in significant morbidity and mortality. Although various therapeutics are available for the treatment of diabetic neuropathy, no absolute cure exists, and additional research is necessary to comprehensively understand the underlying pathophysiological pathways. A number of studies have demonstrated the potential health benefits of bioactive compounds, i.e., flavonoids and vitamins, which may be effective as supplementary treatments for diabetes and its complications. In this review, we highlight the most recent reports about the mechanisms of action of bioactive compounds (flavonoids and vitamins) possessing potential neuroprotective properties in diabetic conditions. Additional clinical studies are required to determine the appropriate dose and duration of bioactive compound supplementation for neuroprotection in diabetic patients.
Collapse
|
12
|
Roumes H, Brossaud J, Lemelletier A, Moisan MP, Pallet V, Redonnet A, Corcuff JB. Retinoids and glucocorticoids have opposite effects on actin cytoskeleton rearrangement in hippocampal HT22 cells. Int J Biochem Cell Biol 2015; 71:102-110. [PMID: 26748244 DOI: 10.1016/j.biocel.2015.12.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 12/18/2015] [Accepted: 12/28/2015] [Indexed: 12/12/2022]
Abstract
A chronic excess of glucocorticoids elicits deleterious effects in the hippocampus. Conversely, retinoic acid plays a major role in aging brain plasticity. As synaptic plasticity depends on mechanisms related to cell morphology, we investigated the involvement of retinoic acid and glucocorticoids in the remodelling of the HT22 neurons actin cytoskeleton. Cells exhibited a significantly more elongated shape with retinoic acid and a rounder shape with dexamethasone; retinoic acid reversed the effects of dexamethasone. Actin expression and abundance were unchanged by retinoic acid or dexamethasone but F-actin organization was dramatically modified. Indeed, retinoic acid and dexamethasone increased (70 ± 7% and 176 ± 5%) cortical actin while retinoic acid suppressed the effect of dexamethasone (90 ± 6%). Retinoic acid decreased (-22 ± 9%) and dexamethasone increased (134 ± 16%) actin stress fibres. Retinoic acid also suppressed the effect of dexamethasone (-21 ± 7%). Spectrin is a key protein in the actin network remodelling. Its abundance was decreased by retinoic acid and increased by dexamethasone (-21 ± 11% and 52 ± 10%). However, retinoic acid did not modify the effect of dexamethasone (48 ± 7%). Calpain activity on spectrin was increased by retinoic acid and decreased by dexamethasone (26 ± 14% and -57 ± 5%); retinoic acid mildly but significantly modified the effect of dexamethasone (-44 ± 7%). The calpain inhibitor calpeptin suppressed the effects of retinoic acid and dexamethasone on cell shape and actin stress fibres remodelling but did not modify the effects on cortical actin. Retinoic acid and dexamethasone have a dramatic but mainly opposite effect on actin cytoskeleton remodelling. These effects originate, at least partly, from calpain activity.
Collapse
Affiliation(s)
- Hélène Roumes
- INRA, Nutrition et neurobiologie intégrée, UMR 1286, 33076 Bordeaux, France; University Bordeaux, Nutrition et neurobiologie intégrée, UMR 1286, 33076 Bordeaux, France
| | - Julie Brossaud
- University Bordeaux, Nutrition et neurobiologie intégrée, UMR 1286, 33076 Bordeaux, France; Laboratoire d'Hormonologie, Service de médecine nucléaire, CHU Bordeaux, 33604 Pessac, France
| | - Aloïs Lemelletier
- INRA, Nutrition et neurobiologie intégrée, UMR 1286, 33076 Bordeaux, France; University Bordeaux, Nutrition et neurobiologie intégrée, UMR 1286, 33076 Bordeaux, France
| | - Marie-Pierre Moisan
- INRA, Nutrition et neurobiologie intégrée, UMR 1286, 33076 Bordeaux, France; University Bordeaux, Nutrition et neurobiologie intégrée, UMR 1286, 33076 Bordeaux, France
| | - Véronique Pallet
- University Bordeaux, Nutrition et neurobiologie intégrée, UMR 1286, 33076 Bordeaux, France; IPB, Nutrition et neurobiologie intégrée, UMR 1286, 33076 Bordeaux, France
| | - Anabelle Redonnet
- INRA, Nutrition et neurobiologie intégrée, UMR 1286, 33076 Bordeaux, France; University Bordeaux, Nutrition et neurobiologie intégrée, UMR 1286, 33076 Bordeaux, France
| | - Jean-Benoît Corcuff
- University Bordeaux, Nutrition et neurobiologie intégrée, UMR 1286, 33076 Bordeaux, France; Laboratoire d'Hormonologie, Service de médecine nucléaire, CHU Bordeaux, 33604 Pessac, France.
| |
Collapse
|
13
|
Prasad SN, Bharath MMS. Neurorestorative effects of eugenol, a spice bioactive: Evidence in cell model and its efficacy as an intervention molecule to abrogate brain oxidative dysfunctions in the streptozotocin diabetic rat. Neurochem Int 2015; 95:24-36. [PMID: 26519099 DOI: 10.1016/j.neuint.2015.10.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2015] [Revised: 10/09/2015] [Accepted: 10/24/2015] [Indexed: 02/07/2023]
Abstract
Eugenol (EU), an active principle of cloves, is also widely distributed in various other plants (eg. basil, cinnamon, etc). While its antioxidant and anti-inflammatory properties are well established, biochemical insights related to its neuromodulatory potential in diabetic conditions are not clear. In the present study, initially we investigated its potential to modulate specific biochemical responses in SHSY5Y cells under experimentally -induced hyperglycemic condition. Co-exposure of cells with EU (5-10 μM) not only enhanced the cell viability, but significantly offset glucose -associated oxidative stress (as evidenced by diminished levels of reactive oxygen species and hydroperoxides). Further EU enhanced the reduced glutathione (GSH) levels and also ameliorated the levels of 3 - nitrotyrosine and expression of HSP70. We subsequently examined its efficacy to attenuate biochemical aberrations in brain regions of a streptozotocin (STZ) diabetic rat employing an intervention approach. Brain regions of EU treated (10 mg/kg bw/d, post 6 weeks of STZ) diabetic rats showed diminished levels of oxidative markers and protein carbonyls in both cytosolic and mitochondrial fractions. EU treatment caused enhanced activities of enzymic antioxidants and diminished both GSH and total thiols. Further, activities of complex I - III, succinate dehydrogenase and citrate synthase in brain regions were also significantly restored. Interestingly, EU treatment differentially attenuated the elevated activity of acetylcholinesterase and levels of calcium in brain regions. Collectively, based on the data obtained in in vitro and in vivo models, we hypothesize that EU may be employed as an adjuvant therapeutic molecule to alleviate complications under diabetic conditions.
Collapse
Affiliation(s)
- Sathya N Prasad
- Department of Biochemistry & Nutrition, CSIR - Central Food Technological Research Institute (CFTRI), Mysuru 570020, India
| | - M M Srinivas Bharath
- Department of Neurochemistry, National Institute of Mental Health and Neurosciences (NIMHANS), #2900, Hosur Road, Bengaluru 560029, India
| |
Collapse
|
14
|
Hematian H, Khaksar Z, Jelodar G. Neural tube alteration in fetuses of diabetic rats. COMPARATIVE CLINICAL PATHOLOGY 2014. [DOI: 10.1007/s00580-013-1775-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
15
|
Leong WS, Wu SC, Pal M, Tay CY, Yu H, Li H, Tan LP. Cyclic tensile loading regulates human mesenchymal stem cell differentiation into neuron-like phenotype. J Tissue Eng Regen Med 2012; 6 Suppl 3:s68-79. [PMID: 22777815 DOI: 10.1002/term.1548] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2011] [Revised: 03/14/2012] [Accepted: 05/14/2012] [Indexed: 01/12/2023]
Abstract
Mechanical loading has been utilized as an effective tool to direct mesenchymal stem cells (MSCs) commitment into cell lineages of mesodermal origin. However, the use of this tool to induce transdifferentiation of MSCs into the neural lineage has never been attempted. In this study, we examined the potential of uniaxial cyclic tensile loading in promoting neuronal differentiation of human MSCs (hMSCs) on modified biodegradable poly(ε-caprolactone) (PCL). The stem cell morphology, tissue-specific gene and protein expression, microfilament structure and, subsequently, Rho GTPase activity were analysed after cyclically stretching the cells at a range of amplitudes (0.5%, 2% or 3.5%) and frequencies (0.5, 1 or 1.5 Hz) for 8 h. hMSCs responded to these stimuli and displayed distinctly different microfilament organization. However, only those stretched at 0.5% strain amplitude and 0.5 Hz frequency showed promoted outgrowth of filopodia with significant upregulation of neurogenic genes expression. Positive staining of the neurogenic protein markers Nestin and Tuj1 suggested that the hMSCs had been committed to early neuronal progenitors. In addition, Rac1 but not RhoA was activated at this particular loading parameter. Furthermore, inhibition of Rac1 activity with NSC23766 disrupted the effect of cyclic loading. The results suggest that cyclic tensile loading at low amplitude and frequency is capable of triggering neuron-like differentiation through the regulation of Rho GTPases activity, even in the absence of neurogenic induction medium.
Collapse
Affiliation(s)
- Wen Shing Leong
- Division of Materials Technology, School of Materials Science and Engineering, Nanyang Technological University, Singapore; Republic Polytechnic, Singapore
| | | | | | | | | | | | | |
Collapse
|
16
|
Singh CK, Kumar A, LaVoie HA, DiPette DJ, Singh US. Resveratrol prevents impairment in activation of retinoic acid receptors and MAP kinases in the embryos of a rodent model of diabetic embryopathy. Reprod Sci 2012; 19:949-61. [PMID: 22534330 DOI: 10.1177/1933719112438972] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Diabetes induces impairments in gene expression during embryonic development that leads to premature and improper tissue specialization. Retinoic acid receptors (RARs and retinoid X receptor [RXRs]) and mitogen-activated protein kinases (MAPKs) play crucial roles during embryonic development, and their suppression or activation has been shown as a determinant of the fate of embryonic organogenesis. We studied the activation of RARs and MAPKs in embryonic day 12 (E12) in embryos of rats under normal, diabetic, and diabetic treated with resveratrol ([RSV]; 100 mg/kg body weight) conditions. We found downregulation of RARs and RXRs expressions as well as their DNA-binding activities in the embryos exhibiting developmental delays due to diabetes. Furthermore, the phosphorylation of extracellular signal-regulated kinase (ERK) 1/2 was decreased and phosphorylation of c-Jun N-terminal kinase (JNK) 1/2 and p38 was increased. Interestingly, embryos of diabetic rats treated with RSV showed normalized patterns of RARs, RXRs, neuronal markers, and ERK, JNK and p38 phosphorylation.
Collapse
Affiliation(s)
- Chandra K Singh
- Department of Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina, Columbia, SC 29209, USA
| | | | | | | | | |
Collapse
|
17
|
Hattangady NG, Rajadhyaksha MS. A brief review of in vitro models of diabetic neuropathy. Int J Diabetes Dev Ctries 2011; 29:143-9. [PMID: 20336195 PMCID: PMC2839127 DOI: 10.4103/0973-3930.57344] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2008] [Accepted: 09/12/2009] [Indexed: 01/08/2023] Open
Abstract
The neuropathies of the peripheral, central and autonomic nervous systems are known to be caused by hyperglycemia, a consequence of the deregulation of glucose in diabetes. Several in vivo models such as streptozotocin-induced diabetic rats, mice and Chinese hamsters have been used to study the pathogenesis of diabetic neuropathy because of their resemblance to human pathology. However, these in vivo models have met with strong ethical oppositions. Further, the system complexity has inherent limitations of inconvenience of analyzing ephemeral molecular events and crosstalk of signal transduction pathways. Alternative in vitro models have been selected and put to effective use in diabetic studies. We critically review the use of these in vitro models such as primary cultures of dorsal root ganglia, Schwann cells and neural tissue as well as neural cell lines which have proved to be excellent systems for detailed study. We also assess the use of embryo cultures for the study of hyperglycemic effects on development, especially of the nervous system. These systems function as useful models to scrutinize the molecular events underlying hyperglycemia-induced stress in neuronal systems and have been very effectively used for the same. This comprehensive overview of advantages and disadvantages of in vitro systems that are currently in use will be of interest especially for comparative assessment of results and for appropriate choice of models for experiments in diabetic neuropathy.
Collapse
Affiliation(s)
- Namita G Hattangady
- Department of Life Sciences, Sophia College, B. Desai Road, Mumbai - 400 026, India
| | | |
Collapse
|
18
|
Kumar A, Singh CK, Lavoie HA, Dipette DJ, Singh US. Resveratrol restores Nrf2 level and prevents ethanol-induced toxic effects in the cerebellum of a rodent model of fetal alcohol spectrum disorders. Mol Pharmacol 2011; 80:446-57. [PMID: 21697273 DOI: 10.1124/mol.111.071126] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
In humans, ethanol exposure during pregnancy produces a wide range of abnormalities in infants collectively known as fetal alcohol spectrum disorders (FASD). Neuronal malformations in FASD manifest as postnatal behavioral and functional disturbances. The cerebellum is particularly sensitive to ethanol during development. In a rodent model of FASD, high doses of ethanol (blood ethanol concentration 80 mM) induces neuronal cell death in the cerebellum. However, information on potential agent(s) that may protect the cerebellum against the toxic effects of ethanol is lacking. Growing evidence suggests that a polyphenolic compound, resveratrol, has antioxidant and neuroprotective properties. Here we studied whether resveratrol (3,5,4'-trihydroxy-trans-stilbene), a phytoalexin found in red grapes and blueberries, protects the cerebellar granule neurons against ethanol-induced cell death. In the present study, we showed that administration of resveratrol (100 mg/kg) to postnatal day 7 rat pups prevents ethanol-induced apoptosis by scavenging reactive oxygen species in the external granule layer of the cerebellum and increases the survival of cerebellar granule cells. It restores ethanol-induced changes in the level of transcription factor nuclear factor-erythroid derived 2-like 2 (nfe2l2, also known as Nrf2) in the nucleus. This in turn retains the expression and activity of its downstream gene targets such as NADPH quinine oxidoreductase 1 and superoxide dismutase in cerebellum of ethanol-exposed pups. These studies indicate that resveratrol exhibits neuroprotective effects in cerebellum by acting at redox regulating proteins in a rodent model of FASD.
Collapse
Affiliation(s)
- Ambrish Kumar
- Department of Pathology, Microbiology, and Immunology, University of South Carolina School of Medicine, University of South Carolina, Columbia, South Carolina, USA
| | | | | | | | | |
Collapse
|
19
|
Enciso JM, Konecny CM, Karpen HE, Hirschi KK. Endothelial cell migration during murine yolk sac vascular remodeling occurs by means of a Rac1 and FAK activation pathway in vivo. Dev Dyn 2011; 239:2570-83. [PMID: 20737513 DOI: 10.1002/dvdy.22389] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
The molecular mechanism(s) controlling cell migration during vascular morphogenesis in vivo remain largely undefined. To address this within a physiological context, we used retinaldehyde dehydrogenase-2 (Raldh2) null mouse embryos and demonstrate that retinoic acid (RA) deficiency results in abnormal yolk sac vascular remodeling due to decreased Rac1 activation, increased RhoA activation, and increased focal adhesions. Vinculin was increased in Raldh2-/- yolk sacs, and molecular events important for focal adhesion turnover, FAK phosphorylation (Tyr397) and FAK-paxillin association, were decreased. RA-rescue of vascular remodeling down-regulated vinculin and restored FAK phosphorylation (Tyr397) and FAK-paxillin association. Furthermore, vascular rescue with vascular endothelial growth factor-A, Indian hedgehog, and basic fibroblast growth factor restored FAK phosphorylation (Tyr397) in the endothelium of Raldh2-/- yolk sacs. Our results provide new insights into the regulation of endothelial cell migration during vascular remodeling in vivo by adding the Rac1 and FAK activation pathway as a critical mediator of focal adhesion formation and turnover during vascular remodeling.
Collapse
Affiliation(s)
- Josephine M Enciso
- Division of Neonatology, Department of Pediatrics, University of California, Los Angeles, Los Angeles, California, USA.
| | | | | | | |
Collapse
|
20
|
Singh CK, Kumar A, Hitchcock DB, Fan D, Goodwin R, LaVoie HA, Nagarkatti P, DiPette DJ, Singh US. Resveratrol prevents embryonic oxidative stress and apoptosis associated with diabetic embryopathy and improves glucose and lipid profile of diabetic dam. Mol Nutr Food Res 2011; 55:1186-96. [PMID: 21254394 DOI: 10.1002/mnfr.201000457] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2010] [Revised: 11/26/2010] [Accepted: 11/30/2010] [Indexed: 01/12/2023]
Abstract
SCOPE Diabetic embryopathy, a consequence of diabetic pregnancy, is associated with increase in embryonic oxidative stress and apoptosis, which lead to severe embryonic damage at early stage of organogenesis. METHODS AND RESULTS This study investigated if resveratrol, found in red grapes and blue-berries, may prevent diabetes-induced oxidative stress and apoptosis in embryos and have beneficial effects in diabetic dams. A rodent model of diabetic embryopathy was used. Diabetes was associated with lowered reduced glutathione levels (26.98%), increased total thiol (100.47%) and lipid peroxidation (124.73%) in embryos, and increased blood sugar (384.03%), cholesterol (98.39%) and triglyceride (1025.35%) in diabetic dams. Increased apoptosis (272.20%) was also observed in the embryos of diabetic dams. Administration of resveratrol (100 mg/kg body weight (b.w.)) during pregnancy prevented both oxidative stress and apoptosis in embryos. Resveratrol reduced embryonic maldevelopment by improving embryo weight (41.23%), crown rump length (16.50%) and somite number (11.22%). It further improved the glucose (33.32%) and lipid (cholesterol 41.74%, triglyceride 60.64%) profile of the diabetic dams, which also represents the protective role of resveratrol in diabetes. CONCLUSION Resveratrol was found to prevent embryonic oxidative stress and apoptosis. It also improved glucose and lipid profile of diabetic dams, indicating the beneficial effects in diabetic pregnancy.
Collapse
Affiliation(s)
- Chandra K Singh
- Department of Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina, Columbia, SC, USA
| | | | | | | | | | | | | | | | | |
Collapse
|
21
|
Kumar A, Singh CK, DiPette DD, Singh US. Ethanol impairs activation of retinoic acid receptors in cerebellar granule cells in a rodent model of fetal alcohol spectrum disorders. Alcohol Clin Exp Res 2010; 34:928-37. [PMID: 20201933 PMCID: PMC4502960 DOI: 10.1111/j.1530-0277.2010.01166.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
BACKGROUND Ethanol is the main addictive and neurotoxic constituent of alcohol. Ethanol exposure during embryonic development causes dysfunction of the central nervous system (CNS) and leads to fetal alcohol spectrum disorders. The cerebellum is one of the CNS regions that are particularly vulnerable to ethanol toxic effects. Retinoic acid (RA) is a physiologically active metabolite of vitamin A that is locally synthesized in the cerebellum. Studies have shown that RA is required for neuronal development, but it remains unknown if ethanol impairs RA signaling and thus induces neuronal malformations. In this study, we tested the hypothesis that ethanol impairs the expression and activation of RA receptors in cerebellum and in cerebellar granule cells. METHODS The cerebellum of ethanol unexposed and exposed pups was used to study the expression of retinoic acid receptors (RARs or RXRs) by immunohistochemistry and by Western blot analysis. We also studied the effect of ethanol on expression of RA receptors in the cerebellar granule cells. Activation of RA receptors (DNA-binding activities) in response to high-dose ethanol was determined by electrophoretic mobility shift and supershift assays. RESULTS Findings from these studies demonstrated that ethanol exposure reduced the expression of RARalpha/gamma while it increased the expression of RXRalpha/gamma in the cerebellum and in cerebellar granule neurons. Immuno-histological studies further strengthened the expression pattern of RA receptors in response to ethanol. The DNA-binding activity of RARs was reduced, while DNA-binding activity of RXRs was increased in response to ethanol exposure. CONCLUSION For the first time, our studies have demonstrated that high-dose ethanol affects the expression and activation of RA receptors, which could impair the signaling events and induce harmful effects on the survival and differentiation of cerebellar granule cells. Taken together, these findings could provide insight into the treatment options for brain defects caused by excessive ethanol exposure, such as in Fetal Alcohol Spectrum Disorders.
Collapse
Affiliation(s)
- Ambrish Kumar
- Department of Pathology, Microbiology, and Immunology, University of South Carolina School of Medicine, Columbia, 29209, USA
| | | | | | | |
Collapse
|
22
|
Wrighten SA, Piroli GG, Grillo CA, Reagan LP. A look inside the diabetic brain: Contributors to diabetes-induced brain aging. Biochim Biophys Acta Mol Basis Dis 2008; 1792:444-53. [PMID: 19022375 DOI: 10.1016/j.bbadis.2008.10.013] [Citation(s) in RCA: 131] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2008] [Revised: 10/10/2008] [Accepted: 10/21/2008] [Indexed: 12/14/2022]
Abstract
Central nervous system (CNS) complications resulting from diabetes is a problem that is gaining more acceptance and attention. Recent evidence suggests morphological, electrophysiological and cognitive changes, often observed in the hippocampus, in diabetic individuals. Many of the CNS changes observed in diabetic patients and animal models of diabetes are reminiscent of the changes seen in normal aging. The central commonalities between diabetes-induced and age-related CNS changes have led to the theory of advanced brain aging in diabetic patients. This review summarizes the findings of the literature as they relate to the relationship between diabetes and dementia and discusses some of the potential contributors to diabetes-induced CNS impairments.
Collapse
Affiliation(s)
- Shayna A Wrighten
- Department of Pharmacology, Physiology and Neuroscience University of South Carolina, School of Medicine, Columbia, SC 29208, USA
| | | | | | | |
Collapse
|
23
|
Tehranipou M, Khakzad M. Effect of Maternal Diabetes on Hippocampus Neuronal Density in Neonatal Rats. ACTA ACUST UNITED AC 2008. [DOI: 10.3923/jbs.2008.1027.1032] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|