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Ryuzaki M, Mizukami H, Takeuchi Y, Osonoi S, Sasaki T, Wang Z, Kushibiki H, Yamada T, Yamazaki K, Ogasawara S, Tarusawa T, Mikami T, Hakamada K, Nakaji S. Moderate cryptoxanthin intake correlates with maintenance of a proper PINT index in a general Japanese population. Nutr Neurosci 2024:1-11. [PMID: 39052592 DOI: 10.1080/1028415x.2024.2383082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2024]
Abstract
INTRODUCTION Small fibre neuropathy (SFN) is an early manifestation of diabetic polyneuropathy. Although oxidative stress, inflammation and change of intestinal bacterial population are assumed to be their pathogenesis, the effects of dietary nutrition have not been evaluated. The relationship between dietary nutrition intake and pain sensation was evaluated in the Japanese population. METHODS We conducted the Iwaki project, a population-based study recruiting 1,028 individuals, in 2018. The relationships between the pain threshold from intraepidermal electrical stimulation (PINT) and the amount of dietary nutrition evaluated by a brief-type self-administered diet history questionnaire were examined. The odds ratio was further explored after categorizing subjects based on low (< 63.7 μg/day), intermediate (63.7-159.2 μg/day), and high cryptoxanthin levels (> 159.2 μg/day). RESULTS Univariate linear regression analyses showed significant correlations between PINT and cryptoxanthin intake even after adjustments for other nutritional intakes (ß = 0.107, p < 0.01). Multivariate logistic regression analysis revealed low and high cryptoxanthin intake as significant risk factors for abnormal PINT (≥ 0.20 mA). Multivariate linear regression analyses showed significant correlations between PINT and cryptoxanthin intake levels after adjustment for other clinically PINT-related factors (ß = 0.09, p < 0.01). CONCLUSIONS Adequate intake of cryptoxanthin is recommended to maintain the pain threshold in the Japanese population.
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Affiliation(s)
- Masaki Ryuzaki
- Department of Pathology and Molecular Medicine, Biomedical Research Center, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Hiroki Mizukami
- Department of Pathology and Molecular Medicine, Biomedical Research Center, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Yuki Takeuchi
- Department of Pathology and Molecular Medicine, Biomedical Research Center, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Sho Osonoi
- Department of Pathology and Molecular Medicine, Biomedical Research Center, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Takanori Sasaki
- Department of Pathology and Molecular Medicine, Biomedical Research Center, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Zhenchao Wang
- Department of Pathology and Molecular Medicine, Biomedical Research Center, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Hanae Kushibiki
- Department of Pathology and Molecular Medicine, Biomedical Research Center, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Takahiro Yamada
- Department of Pathology and Molecular Medicine, Biomedical Research Center, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
- Department of Gastrointestinal Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Keisuke Yamazaki
- Department of Pathology and Molecular Medicine, Biomedical Research Center, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
- Department of Gastrointestinal Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Saori Ogasawara
- Department of Pathology and Molecular Medicine, Biomedical Research Center, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Takefusa Tarusawa
- Department of Pathology and Molecular Medicine, Biomedical Research Center, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Tatsuya Mikami
- Innovation Center for Health Promotion, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Kenichi Hakamada
- Department of Gastrointestinal Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Shigeyuki Nakaji
- Department of Social Medicine, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
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Frediani JK, Lal AA, Kim E, Leslie SL, Boorman DW, Singh V. The role of diet and non-pharmacologic supplements in the treatment of chronic neuropathic pain: A systematic review. Pain Pract 2024; 24:186-210. [PMID: 37654090 DOI: 10.1111/papr.13291] [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: 02/22/2023] [Revised: 06/01/2023] [Accepted: 08/04/2023] [Indexed: 09/02/2023]
Abstract
BACKGROUND/IMPORTANCE Dietary interventions, vitamins, and nutritional supplementation are playing an increasingly important role in the management of neuropathic pain. Current pharmacological treatments are poorly tolerated and ineffective in many cases. OBJECTIVE This systematic review aims to study the efficacy of dietary interventions, vitamins, and nutritional supplementation in the management of chronic neuropathic pain in adults. EVIDENCE REVIEW The review followed PRISMA guidelines and was registered with PROSPERO (#CRD42022300312). Ten databases and gray literature, including Embase.com, MEDLINE and Web of Science, were systematically searched using a combination of keywords and controlled vocabulary related to chronic neuropathic pain and oral non-pharmacological supplements. Studies on adult humans published between 2000 and 2021 were considered for inclusion. The Cochrane Handbook was used to assess risk of bias, and Grading of Recommendations Assessment, Development, and Evaluation was used to determine overall quality of evidence. FINDINGS Forty studies were included in the final review, and results were categorized according to pain type including pain related to chemotherapy-induced peripheral neuropathy (CIPN, 22 studies, including 3 prospective cohorts), diabetic peripheral neuropathy (DPN, 13 studies, including 2 prospective), complex regional pain syndrome (CRPS-I, 3 studies, including 1 prospective), and other (2 studies, both RCT). The CIPN studies used various interventions including goshajinkigan (4 studies), vitamin E (5), vitamin B12 (3), glutamine (3), N-acetyl-cysteine (2), acetyl-l-carnitine (2), guilongtonluofang (1), ninjin'yoeito (1), alpha-lipoic acid (1), l-carnosine (1), magnesium and calcium (1), crocin (1), and antioxidants (1), with some studies involving multiple interventions. All CIPN studies involved varying cancers and/or chemotherapies, advising caution for generalizability of results. Interventions for DPN included alpha-lipoic acid (5 studies), vitamin B12 (3), acetyl-l-carnitine (3), vitamin E (1), vitamin D (2), and a low-fat plant-based diet (1). Vitamin C was studied to treat CRPS-I (3 studies, including 1 prospective). Magnesium (1) and St. John's wort (1) were studied for other or mixed neuropathologies. CONCLUSIONS Based on the review, we cannot recommend any supplement use for the management of CIPN, although further research into N-acetyl-cysteine, l-carnosine, crocin, and magnesium is warranted. Acetyl-l-carnitine was found to be likely ineffective or harmful. Alpha-lipoic acid was not found effective. Studies with goshajinkigan, vitamin B12, vitamin E, and glutamine had conflicting results regarding efficacy, with one goshajinkigan study finding it harmful. Guilongtonluofang, ninjin'yoeito, and antioxidants showed various degrees of potential effectiveness. Regarding DPN, our review supports the use of alpha-lipoic acid, acetyl-l-carnitine, and vitamin D. The early use of vitamin C prophylaxis for the development of CRPS-I also seems promising. Further research is warranted to confirm these findings.
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Affiliation(s)
- Jennifer K Frediani
- Nell Hodgson Woodruff School of Nursing, Emory University, Atlanta, Georgia, USA
| | - Asim A Lal
- Department of Anesthesiology, Emory School of Medicine, Atlanta, Georgia, USA
| | - Esther Kim
- Philadelphia College of Osteopathic Medicine, Suwanee, Georgia, USA
| | - Sharon L Leslie
- Woodruff Health Sciences Center Library, Emory University, Atlanta, Georgia, USA
| | - David W Boorman
- Department of Anesthesiology, Emory School of Medicine, Atlanta, Georgia, USA
| | - Vinita Singh
- Department of Anesthesiology, Emory School of Medicine, Atlanta, Georgia, USA
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Apergi K, Papanas N. Dietary and Nutritional Supplementation for Painful Diabetic Neuropathy: A Narrative Review. Exp Clin Endocrinol Diabetes 2023; 131:646-655. [PMID: 37813369 DOI: 10.1055/a-2188-1745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/11/2023]
Abstract
Painful diabetic neuropathy (PDN) is a serious and very common complication of diabetes mellitus (DM). It negatively affects the quality of life, increases morbidity and poses a financial burden on the health care system. Currently, treatment of PDN focuses on glycaemic control, while pathogenesis-oriented therapy has not yielded satisfactory results. The need to improve therapy remains. There is accumulating evidence on the potential benefit of nutritional interventions. This narrative review aims to examine the potential benefit of dietary and nutritional supplementation for PDN management. According to the preliminary research, supplementation with vitamin E, B-complex, omega-3 fatty acids, CoQ10 or N-acetylcysteine seems to be associated with promising results in improving PDN symptoms.
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Affiliation(s)
- Kyriaki Apergi
- Medical School, National and Kapodistrian University of Athens, Athens,Greece
| | - Nikolaos Papanas
- Diabetes Centre-Diabetic Foot Clinic, Second Department of Internal Medicine, Democritus University of Thrace, Alexandroupolis, Greece
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Asbaghi O, Nazarian B, Yousefi M, Anjom-Shoae J, Rasekhi H, Sadeghi O. Effect of vitamin E intake on glycemic control and insulin resistance in diabetic patients: an updated systematic review and meta-analysis of randomized controlled trials. Nutr J 2023; 22:10. [PMID: 36800965 PMCID: PMC9936725 DOI: 10.1186/s12937-023-00840-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 01/30/2023] [Indexed: 02/19/2023] Open
Abstract
Since a 2014 meta-analysis, several randomized controlled trials (RCTs) evaluating the effect of vitamin E intake on glycemic indices and insulin resistance in adults with diabetes have reached inconsistent conclusions. Therefore, we updated the previous meta-analysis to summarize the current evidence in this regard. Online databases including PubMed, Scopus, ISI Web of Science, and Google Scholar were searched to identify relevant studies published up to September 30, 2021, using relevant keywords. Random-effects models were used to obtain overall mean difference (MD) comparing vitamin E intake with a control group. In total, 38 RCTs with a total sample size of 2171 diabetic patients (1110 in vitamin E groups and 1061 in control groups) were included. Combining the results from 28 RCTs on fasting blood glucose, 32 RCTs on HbA1c, 13 RCTs on fasting insulin, and 9 studies on homeostatic model assessment for insulin resistance (HOMA-IR) showed a summary MD of -3.35 mg/dL (95% CI: -8.10 to 1.40, P = 0.16), -0.21% (95% CI: -0.33 to -0.09, P = 0.001), -1.05 µIU/mL (95% CI: -1.53 to -0.58, P < 0.001), and -0.44 (95% CI: -0.82 to -0.05, P = 0.02), respectively. This indicates a significant lowering effect of vitamin E on HbA1c, fasting insulin and HOMA-IR, while no significant effect on fasting blood glucose in diabetic patients. However, in subgroup analyses, we found that vitamin E intake significantly reduced fasting blood glucose in studies with an intervention duration of < 10 weeks. In conclusion, vitamin E intake has a beneficial role in improving HbA1c and insulin resistance in a population with diabetes. Moreover, short-term interventions with vitamin E have resulted in lower fasting blood glucose in these patients. This meta-analysis was registered in PROSPERO with code CRD42022343118.
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Affiliation(s)
- Omid Asbaghi
- grid.411600.2Cancer Research Center, Student Research Committee, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Behzad Nazarian
- grid.508728.00000 0004 0612 1516Student Research Committee, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Mojtaba Yousefi
- grid.413020.40000 0004 0384 8939Department of Nutrition, School of Health and Nutrition, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Javad Anjom-Shoae
- grid.1010.00000 0004 1936 7304Adelaide Medical School and Centre of Research Excellence in Translating Nutritional Science to Good Health, University of Adelaide, Adelaide, SA 5005 Australia
| | - Hamid Rasekhi
- Department of Nutrition Research, National Nutrition and Food Technology Research Institute and Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Omid Sadeghi
- Nutrition and Food Security Research Center and Department of Community Nutrition, School of Nutrition & Food Sciences, Isfahan University of Medical Sciences, Isfahan, Iran. .,Student Research Committee, Isfahan University of Medical Sciences, Isfahan, Iran.
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Wu JR, Song EK, Moser DK, Lennie TA. Dietary Antioxidant Insufficiency Is Associated With Increased Inflammatory Markers and Poorer Health-Related Quality of Life in Patients With Heart Failure. J Cardiovasc Nurs 2023; 38:6-12. [PMID: 35404329 PMCID: PMC9547034 DOI: 10.1097/jcn.0000000000000912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND Antioxidant insufficiency, elevated inflammatory markers, and poor health-related quality of life (HRQOL) are prevalent in patients with heart failure (HF). OBJECTIVE The objective of this study was to examine the associations among dietary antioxidant intake, inflammatory markers, and HRQOL in patients with HF. METHODS This was a secondary analysis of 265 patients with HF who completed a 4-day food diary. We assessed intake of 10 antioxidants: alpha carotene, beta carotene, beta cryptoxanthin, lutein, zeaxanthin, lycopene, vitamins C and E, zinc, and selenium. Antioxidant insufficiency was reflected by a measured level for each antioxidant that was below the estimate average requirement or lower than median for antioxidants without an estimate average requirement. Inflammatory markers including serum C-reactive protein, cytokines (interleukins 6 and 10), tumor necrosis factor-alpha, and soluble receptors (sTNFR1 and sTNFR2) were assessed with enzyme immunoassay. Health-related quality of life was measured using the Minnesota Living with Heart Failure at 12 months. RESULTS Dietary antioxidant insufficiency predicted C-reactive protein (β = 0.135, P = .032) and interleukin 10 (β = -.155, P = .027). Patients with higher antioxidant insufficiency had higher C-reactive protein and lower interleukin 10. Both antioxidant insufficiency (β = 0.13, P = .049) and higher C-reactive protein (β = 0.16, P = .019) were independently associated with poorer HRQOL while adjusting for covariates. CONCLUSIONS Dietary antioxidant insufficiency was associated with increased markers of inflammation and poorer HRQOL. Improvement of diet quality among patients with HF may be a fruitful area of research for enhancing HRQOL.
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Antinociceptive effect of N-acetyl glucosamine in a rat model of neuropathic pain. Acta Neuropsychiatr 2022; 34:260-268. [PMID: 35109948 DOI: 10.1017/neu.2022.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
OBJECTIVE This study was aimed at evaluating the efficacy of glucosamine and potential mechanisms of actions in a neuropathic pain model in rats. METHODS Glucosamine (500, 1000 and 2000 mg/kg) was administered via gavage route, 1 day before the chronic constriction injury (CCI) of sciatic nerve and daily for 14 days (prophylactic regimen), or from days 5 to 14 post-injury (therapeutic regimen), as the indicators of neuropathic pain, mechanical allodynia, cold allodynia and thermal hyperalgesia were assessed on days 0, 3, 5, 7, 10 and 14 after ligation. Inducible nitric oxide synthase (iNOS) and tumour necrosis factor alpha (TNF-α) gene expressions were measured by real-time polymerase chain reaction. TNF-α protein content was measured using the enzyme-linked immunosorbent assay method. RESULTS Three days after nerve injury, the threshold of pain was declined among animals subjected to neuropathic pain. Mechanical and cold allodynia, as well as thermal hyperalgesia were attenuated by glucosamine (500, 1000, 2000 mg/kg) in the prophylactic regimen. However, existing pain was not decreased by this drug. Increased mRNA expression of iNOS and TNF-α was significantly reduced in the spinal cord of CCI animals by glucosamine (500, 1000, 2000 mg/kg) in the prophylactic regimen. The overall expression of spinal TNF-α was increased by CCI, but this increase was reduced in animals receiving glucosamine prophylactic treatment. CONCLUSION Findings suggest that glucosamine as a safe supplement may be a useful candidate in preventing neuropathic pain following nerve injury. Antioxidant and anti-inflammatory effects may be at least in part responsible for the antinociceptive effects of this drug.
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Owoyele BV, Bakare AO, Olaseinde OF, Ochu MJ, Yusuff AM, Ekebafe F, Fogabi OL, Roi T. Synergistic interaction between acetaminophen and L-carnosine improved neuropathic pain via NF-κB pathway and antioxidant properties in chronic constriction injury model. Korean J Pain 2022; 35:271-279. [PMID: 35768982 PMCID: PMC9251391 DOI: 10.3344/kjp.2022.35.3.271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 04/17/2022] [Accepted: 04/18/2022] [Indexed: 11/28/2022] Open
Abstract
Background Inflammation is known to underlie the pathogenesis in neuropathic pain. This study investigated the anti-inflammatory and neuroprotective mechanisms involved in antinociceptive effects of co-administration of acetaminophen and L-carnosine in chronic constriction injury (CCI)-induced peripheral neuropathy in male Wistar rats. Methods Fifty-six male Wistar rats were randomly divided into seven experimental groups (n = 8) treated with normal saline/acetaminophen/acetaminophen + L-carnosine. CCI was used to induce neuropathic pain in rats. Hyperalgesia and allodynia were assessed using hotplate and von Frey tests, respectively. Investigation of spinal proinflammatory cytokines and antioxidant system were carried out after twenty-one days of treatment. Results The results showed that the co-administration of acetaminophen and L-carnosine significantly (P < 0.001) increased the paw withdrawal threshold to thermal and mechanical stimuli in ligated rats compared to the ligated naïve group. There was a significant (P < 0.001) decrease in the levels of nuclear factor kappa light chain enhancer B cell inhibitor, calcium ion, interleukin-1-beta, and tumour necrotic factor-alpha in the spinal cord of the group coadministered with acetaminophen and L-carnosine compared to the ligated control group. Co-administration with acetaminophen and L-carnosine increased the antioxidant enzymatic activities and reduced the lipid peroxidation in the spinal cord. Conclusions Co-administration of acetaminophen and L-carnosine has anti-inflammatory effects as a mechanism that mediate its antinociceptive effects in CCI-induced peripheral neuropathy in Wistar rat.
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Affiliation(s)
- Bamidele Victor Owoyele
- Neuroscience and Inflammation Unit, Department of Physiology, Faculty of Basic Medical Sciences, University of Ilorin, Ilorin, Kwara State, Nigeria
| | - Ahmed Olalekan Bakare
- Neuroscience and Inflammation Unit, Department of Physiology, Adeleke University, Ede, Osun State, Nigeria
| | - Olutayo Folajimi Olaseinde
- Neuroscience and Inflammation Unit, Department of Physiology, Faculty of Basic Medical Sciences, University of Ilorin, Ilorin, Kwara State, Nigeria
| | - Mohammed Jelil Ochu
- Neuroscience and Inflammation Unit, Department of Physiology, Faculty of Basic Medical Sciences, University of Ilorin, Ilorin, Kwara State, Nigeria
| | - Akorede Munirdeen Yusuff
- Neuroscience and Inflammation Unit, Department of Physiology, Faculty of Basic Medical Sciences, University of Ilorin, Ilorin, Kwara State, Nigeria
| | - Favour Ekebafe
- Neuroscience and Inflammation Unit, Department of Physiology, Faculty of Basic Medical Sciences, University of Ilorin, Ilorin, Kwara State, Nigeria
| | - Oluwadamilare Lanre Fogabi
- Neuroscience and Inflammation Unit, Department of Physiology, Faculty of Basic Medical Sciences, University of Ilorin, Ilorin, Kwara State, Nigeria
| | - Treister Roi
- Department of Nursing, Faculty of Social Welfare and Health Sciences, University of Haifa, Haifa, Israel
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Esu KD, Bakare AO, Owoyele BV. Effects of co-administration of vitamin E and lithium chloride on chronic constriction injury-induced neuropathy in male Wistar rats: Focus on antioxidant and anti-inflammatory mechanisms. Pain Pract 2022; 22:148-158. [PMID: 34351685 DOI: 10.1111/papr.13064] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 07/21/2021] [Accepted: 07/29/2021] [Indexed: 12/25/2022]
Abstract
OBJECTIVES This study investigated the antinociceptive effects of co-administration of lithium chloride (LiCl) and vitamin E (Vit E) on chronic constriction injury (CCI)-induced peripheral neuropathy in male Wistar rats. It further explored the anti-inflammatory and neuroprotective properties of LiCl and Vit E, which may be complementary to the antinociceptive effects of the two substances. METHODS Thirty-six male Wistar rats, 190.00 ± 10.00 g of body weight were randomly assigned to 6 experimental groups and administered with normal saline, Vit E, LiCl, or their combination, once daily for 21 days. CCI was used to induce neuropathic pain (NP) and mechanical allodynia was assessed using von Frey filaments and pinprick test. Open field maze (OFM) was used to assess the exploratory behavior. Biochemical parameters were assessed in the dorsal root ganglion after 21 days of treatment. RESULTS Mechanical allodynia was developed in rats following CCI. Co-administration of LiCl and Vit E synergistically reduced mechanical hyperalgesia in rats which were significantly different compared with the single administration of either Vit E or LiCl. Combined doses of Vit E and LiCl significantly increases the explorative behavior in the OFM. CCI increased malondialdehyde (MDA), tumor necrotic factor-alpha (TNF-α), calcitonin gene-related polypeptide, calcium ion (Ca2+ ), and reduced superoxide dismutase (SOD) activities. Co-administration of LiCl and Vit E significantly reduced MDA, TNF-α, but increased SOD compared with ligated control. DISCUSSION The findings revealed that the synergistic effects of the co-administration of Vit E and LiCl in ameliorating NP are mediated by their anti-inflammatory and antioxidant properties.
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Affiliation(s)
- Kingsley Dominic Esu
- Neuroscience and Inflammation Unit, Department of Physiology, University of Ilorin, Ilorin, Nigeria
| | - Ahmed Olalekan Bakare
- Neuroscience and Inflammation Unit, Department of Physiology, University of Ilorin, Ilorin, Nigeria
| | - Bamidele Victor Owoyele
- Neuroscience and Inflammation Unit, Department of Physiology, University of Ilorin, Ilorin, Nigeria
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Méndez-Morales S, Pérez-De Marco J, Rodríguez-Cortés O, Flores-Mejía R, Martínez-Venegas M, Sánchez-Vera Y, Tamay-Cach F, Lomeli-Gonzaléz J, Emilio Reyes A, Lehman-Mendoza R, Martínez-Arredondo H, Vazquez-Dávila R, Torres-Roldan J, Correa-Basurto J, Arellano-Mendoza M. Diabetic neuropathy: Molecular approach a treatment opportunity. Vascul Pharmacol 2022; 143:106954. [DOI: 10.1016/j.vph.2022.106954] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 01/11/2022] [Accepted: 01/13/2022] [Indexed: 12/15/2022]
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Tocotrienol-Rich Vitamin E (Tocovid) Improved Nerve Conduction Velocity in Type 2 Diabetes Mellitus Patients in a Phase II Double-Blind, Randomized Controlled Clinical Trial. Nutrients 2021; 13:nu13113770. [PMID: 34836025 PMCID: PMC8618591 DOI: 10.3390/nu13113770] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 09/30/2021] [Accepted: 10/17/2021] [Indexed: 01/02/2023] Open
Abstract
Diabetic peripheral neuropathy (DPN) is the most common microvascular complication of diabetes that affects approximately half of the diabetic population. Up to 53% of DPN patients experience neuropathic pain, which leads to a reduction in the quality of life and work productivity. Tocotrienols have been shown to possess antioxidant, anti-inflammatory, and neuroprotective properties in preclinical and clinical studies. This study aimed to investigate the effects of tocotrienol-rich vitamin E (Tocovid SuprabioTM) on nerve conduction parameters and serum biomarkers among patients with type 2 diabetes mellitus (T2DM). A total of 88 patients were randomized to receive 200 mg of Tocovid twice daily, or a matching placebo for 12 months. Fasting blood samples were collected for measurements of HbA1c, renal profile, lipid profile, and biomarkers. A nerve conduction study (NCS) was performed on all patients at baseline and subsequently at 2, 6, 12 months. Patients were reassessed after 6 months of washout. After 12 months of supplementation, patients in the Tocovid group exhibited highly significant improvements in conduction velocity (CV) of both median and sural sensory nerves as compared to those in the placebo group. The between-intervention-group differences (treatment effects) in CV were 1.60 m/s (95% CI: 0.70, 2.40) for the median nerve and 2.10 m/s (95% CI: 1.50, 2.90) for the sural nerve. A significant difference in peak velocity (PV) was also observed in the sural nerve (2.10 m/s; 95% CI: 1.00, 3.20) after 12 months. Significant improvements in CV were only observed up to 6 months in the tibial motor nerve, 1.30 m/s (95% CI: 0.60, 2.20). There were no significant changes in serum biomarkers, transforming growth factor beta-1 (TGFβ-1), or vascular endothelial growth factor A (VEGF-A). After 6 months of washout, there were no significant differences from baseline between groups in nerve conduction parameters of all three nerves. Tocovid at 400 mg/day significantly improve tibial motor nerve CV up to 6 months, but median and sural sensory nerve CV in up to 12 months of supplementation. All improvements diminished after 6 months of washout.
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Okdahl T, Brock C. Molecular Aspects in the Potential of Vitamins and Supplements for Treating Diabetic Neuropathy. Curr Diab Rep 2021; 21:31. [PMID: 34448953 PMCID: PMC8397661 DOI: 10.1007/s11892-021-01397-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/01/2021] [Indexed: 01/16/2023]
Abstract
To discuss and provide evidence-based data on dietary supplements as part of treating diabetic neuropathy RECENT FINDINGS: Few randomized controlled trials are available, but some have shown beneficial efficacy of various dietary supplements on objective primary endpoints including nerve conduction velocities and axon potentials as well as subjective patient-reported outcomes. No medical cure for diabetic neuropathy exists, and prevention is therefore crucial. Tight glucose control slows the progression of nerve damage in diabetes, but an unmet clinical need for effective interventions is warranted. Consequently, a growing number of patients turn to dietary supplements proposed to possess neuroprotective properties. However, the postulated effects are often not evidence-based as they have not been tested scientifically. Taken together, this review will focus on dietary supplements investigated in clinical trials for their potential capabilities in targeting the molecular mechanisms involved in the underlying pathogenesis of diabetic neuropathy.
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Affiliation(s)
- Tina Okdahl
- grid.5117.20000 0001 0742 471XMech-Sense, Department of Gastroenterology and Hepatology, Aalborg University Hospital and Clinical Institute, Aalborg University, Mølleparkvej 4, 9000 Aalborg, Denmark
| | - Christina Brock
- grid.5117.20000 0001 0742 471XMech-Sense, Department of Gastroenterology and Hepatology, Aalborg University Hospital and Clinical Institute, Aalborg University, Mølleparkvej 4, 9000 Aalborg, Denmark
- grid.5117.20000 0001 0742 471XDepartment of Clinical Medicine, Aalborg University, Aalborg, Denmark
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Chen J, Shan H, Yang W, Zhang J, Dai H, Ye Z. Vitamin E for the Prevention of Chemotherapy-Induced Peripheral Neuropathy: A meta-Analysis. Front Pharmacol 2021; 12:684550. [PMID: 34054560 PMCID: PMC8155355 DOI: 10.3389/fphar.2021.684550] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 04/28/2021] [Indexed: 01/29/2023] Open
Abstract
Background: Vitamin E has been increasingly used to prevent chemotherapy-induced peripheral neuropathy (CIPN) in recent years. However, it is still unclear whether vitamin E can effectively prevent CIPN. Methods: We searched all clinical studies in the Embase, Cochrane Library, Clinicaltrials.gov, and PubMed databases from inception to December 2020. We performed a meta-analysis of 9 randomized controlled trials (RCTs) with 486 patients that compared the vitamin E group with the control group. Outcomes of the study were incidence of all-grade CIPN, incidence of severe CIPN, and the total neuropathy scores (TNS). Random effect models were used to make the meta-analysis results more cautious. Results: Notably, vitamin E significantly reduced the incidence of all-grade CIPN (overall risk ratio (RR) = 0.55, 95% CI: 0.36, 0.85, I2 = 77.3%, p = 0.007), and TNS (overall standard mean difference (SMD) = -0.64, 95% CI: -1.03, -0.25, I2 = 42.7%, p = 0.001). However, the results of the subgroup analysis, which included only double-blind RCTs, suggested that vitamin E did not significantly reduce the incidence of all-grade CIPN (overall RR = 0.52, 95% CI: 0.07, 4.06, I2 = 77.5%, p = 0.531). Moreover, there was no significant difference in the incidence of severe CIPN between these two arms (p = 0.440). Conclusion: The results of our meta-analysis suggests that vitamin E has a beneficial effect on the incidence and symptoms of CIPN. However, routine prophylactic use of vitamin E is still not recommended. Moreover, more high-quality double-blind RCTs are needed to further validate the effects of vitamin E in prevention of CIPN.
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Affiliation(s)
- Jie Chen
- Department of Pharmacy, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Haili Shan
- Department of Pharmacy, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Wenjun Yang
- Department of Pharmacy, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jiali Zhang
- Department of Pharmacy, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Haibin Dai
- Department of Pharmacy, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Ziqi Ye
- Department of Clinical Pharmacy, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
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13
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Shahid M, Subhan F, Islam NU, Ahmad N, Farooq U, Abbas S, Akbar S, Ullah I, Raziq N, Din ZU. The antioxidant N-(2-mercaptopropionyl)-glycine (tiopronin) attenuates expression of neuropathic allodynia and hyperalgesia. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2021; 394:603-617. [PMID: 33079239 DOI: 10.1007/s00210-020-01995-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 10/08/2020] [Indexed: 02/06/2023]
Abstract
The current pharmacotherapy of neuropathic pain is inadequate as neuropathic pain involves varied clinical manifestations with multifactorial etiology, modulated by a cascade of physical and molecular events leading to different clinical presentations of pain. There is an accumulating evidence of the involvement of oxidative stress in neuropathy, and antioxidants have shown promise in mitigating neuropathic pain syndromes. To explore the evidence supporting this beneficial proclivity of antioxidants, this study investigated the antinociceptive effectiveness of N-(2-mercaptopropionyl)glycine or tiopronin, a well-recognized aminothiol antioxidant, in a refined chronic constriction injury (CCI) rat model of neuropathic pain. Tiopronin (10, 30, and 90 mg/kg, i.p.) and pregabalin (30 mg/kg, i.p.) were administered daily after CCI surgery. The neuropathic paradigms of mechanical/cold allodynia and mechanical/heat hyperalgesia were assessed on days 3, 7, 14, and 21 post-nerve ligation. At the end of study, malondialdehyde (MDA), superoxide dismutase (SOD), catalase (CAT), and glutathione (GSH) levels were estimated in the sciatic nerve, dorsal root ganglion, and spinal cord for assessing the extent of oxidative stress. The expression of neuropathic nociception was attenuated by tiopronin which was observed as a significant attenuation of CCI-induced allodynia and hyperalgesia. Tiopronin reversed the neuronal oxidative stress by significantly reducing MDA, and increasing SOD, CAT, and GSH levels. Pregabalin also showed similar beneficial propensity on CCI-induced neuropathic aberrations. These findings suggest prospective neuropathic pain attenuating efficacy of tiopronin and further corroborated the notion that antioxidants are effective in mitigating the development and expression of neuropathic pain and underlying neuronal oxidative stress.
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Affiliation(s)
- Muhammad Shahid
- Department of Pharmacy, Sarhad University of Science and Information Technology, Peshawar, Khyber Pakhtunkhwa, 25000, Pakistan.
| | - Fazal Subhan
- Department of Pharmacy, CECOS University of IT and Emerging Sciences, Peshawar, Pakistan.
| | - Nazar Ul Islam
- Department of Pharmacy, Sarhad University of Science and Information Technology, Peshawar, Khyber Pakhtunkhwa, 25000, Pakistan
| | - Nisar Ahmad
- Faculty of Pharmacy, National University of Pakistan, Sialkot, Punjab, Pakistan
| | - Umar Farooq
- Department of Pharmacy, Sarhad University of Science and Information Technology, Peshawar, Khyber Pakhtunkhwa, 25000, Pakistan
| | - Sudhair Abbas
- Department of Pharmacy, Sarhad University of Science and Information Technology, Peshawar, Khyber Pakhtunkhwa, 25000, Pakistan
| | - Shehla Akbar
- Department of Pharmacy, CECOS University of IT and Emerging Sciences, Peshawar, Pakistan
| | - Ihsan Ullah
- Department of Pharmacy, University of Swabi, Swabi, Pakistan
| | - Naila Raziq
- Department of Pharmacy, Sarhad University of Science and Information Technology, Peshawar, Khyber Pakhtunkhwa, 25000, Pakistan
| | - Zia Ud Din
- Department of Anatomy, Khyber Medical College, Peshawar, Pakistan
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14
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Nazıroğlu M, Öz A, Yıldızhan K. Selenium and Neurological Diseases: Focus on Peripheral Pain and TRP Channels. Curr Neuropharmacol 2021; 18:501-517. [PMID: 31903884 PMCID: PMC7457405 DOI: 10.2174/1570159x18666200106152631] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 11/26/2019] [Accepted: 01/04/2020] [Indexed: 12/18/2022] Open
Abstract
Pain is a complex physiological process that includes many components. Growing evidence supports the idea that oxidative stress and Ca2+ signaling pathways participate in pain detection by neurons. The main source of endogenous reactive oxygen species (ROS) is mitochondrial dysfunction induced by membrane depolarization, which is in turn caused by Ca2+ influx into the cytosol of neurons. ROS are controlled by antioxidants, including selenium. Selenium plays an important role in the nervous system, including the brain, where it acts as a cofactor for glutathione peroxidase and is incorporated into selenoproteins involved in antioxidant defenses. It has neuroprotective effects through modulation of excessive ROS production, inflammation, and Ca2+ overload in several diseases, including inflammatory pain, hypersensitivity, allodynia, diabetic neuropathic pain, and nociceptive pain. Ca2+ entry across membranes is mediated by different channels, including transient receptor potential (TRP) channels, some of which (e.g., TRPA1, TRPM2, TRPV1, and TRPV4) can be activated by oxidative stress and have a role in the induction of peripheral pain. The results of recent studies indicate the modulator roles of selenium in peripheral pain through inhibition of TRP channels in the dorsal root ganglia of experimental animals. This review summarizes the protective role of selenium in TRP channel regulation, Ca2+ signaling, apoptosis, and mitochondrial oxidative stress in peripheral pain induction.
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Affiliation(s)
- Mustafa Nazıroğlu
- Neuroscience Research Center, Suleyman Demirel University, Isparta, Turkey.,Department of Biophysics, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey.,Drug Discovery Unit, BSN Health, Analysis and Innovation Ltd. Inc. Teknokent, Isparta, Turkey
| | - Ahmi Öz
- Department of Biophysics, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey
| | - Kenan Yıldızhan
- Department of Biophysics, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey
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15
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Dragan S, Șerban MC, Damian G, Buleu F, Valcovici M, Christodorescu R. Dietary Patterns and Interventions to Alleviate Chronic Pain. Nutrients 2020; 12:E2510. [PMID: 32825189 PMCID: PMC7551034 DOI: 10.3390/nu12092510] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 08/11/2020] [Accepted: 08/14/2020] [Indexed: 12/14/2022] Open
Abstract
Pain is one of the main problems for modern society and medicine, being the most common symptom described by almost all patients. When pain becomes chronic, the life of the patients is dramatically affected, being associated with significant emotional distress and/or functional disability. A complex biopsychosocial evaluation is necessary to better understand chronic pain, where good results can be obtained through interconnected biological, psychological, and social factors. The aim of this study was to find the most relevant articles existent in the PubMed database, one of the most comprehensive databases for medical literature, comprising dietary patterns to alleviate chronic pain. Through a combined search using the keywords "chronic pain" and "diet" limited to the last 10 years we obtained 272 results containing the types of diets used for chronic pain published in the PubMed database. Besides classical and alternative methods of treatment described in literature, it was observed that different diets are also a valid solution, due to many components with antioxidant and anti-inflammatory qualities capable to influence chronic pain and to improve the quality of life. Thirty-eight clinical studies and randomized controlled trials are analyzed, in an attempt to characterize present-day dietary patterns and interventions to alleviate chronic pain.
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Affiliation(s)
- Simona Dragan
- Department of Cardiology, “Victor Babeș” University of Medicine and Pharmacy, 2 Eftimie Murgu Square, 300041 Timișoara, Romania; (S.D.); (F.B.); (M.V.); (R.C.)
- Institute of Cardiovascular Diseases Timișoara, 13 Gheorghe Adam Street, 300310 Timișoara, Romania
| | - Maria-Corina Șerban
- Department of Functional Sciences, “Victor Babeș” University of Medicine and Pharmacy, 2 Eftimie Murgu Square, 300041 Timișoara, Romania
| | - Georgiana Damian
- Department of Cardiology, “Victor Babeș” University of Medicine and Pharmacy, 2 Eftimie Murgu Square, 300041 Timișoara, Romania; (S.D.); (F.B.); (M.V.); (R.C.)
| | - Florina Buleu
- Department of Cardiology, “Victor Babeș” University of Medicine and Pharmacy, 2 Eftimie Murgu Square, 300041 Timișoara, Romania; (S.D.); (F.B.); (M.V.); (R.C.)
| | - Mihaela Valcovici
- Department of Cardiology, “Victor Babeș” University of Medicine and Pharmacy, 2 Eftimie Murgu Square, 300041 Timișoara, Romania; (S.D.); (F.B.); (M.V.); (R.C.)
- Institute of Cardiovascular Diseases Timișoara, 13 Gheorghe Adam Street, 300310 Timișoara, Romania
| | - Ruxandra Christodorescu
- Department of Cardiology, “Victor Babeș” University of Medicine and Pharmacy, 2 Eftimie Murgu Square, 300041 Timișoara, Romania; (S.D.); (F.B.); (M.V.); (R.C.)
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16
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Schlotterer A, Masri B, Humpert M, Krämer BK, Hammes HP, Morcos M. Sulforaphane and Vitamin E Protect From Glucotoxic Neurodegeneration and Lifespan Reduction In C. Elegans. Exp Clin Endocrinol Diabetes 2020; 129:887-894. [PMID: 32503075 DOI: 10.1055/a-1158-9248] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/06/2022]
Abstract
Caenorhabditis elegans is an established model organism in neurodegeneration and aging research. Oxidative stress and formation of advanced glycation endproducts (AGEs), as they occur under hyperglycemic conditions in diabetes mellitus, contribute to neuronal damage and lifespan reduction. Sulforaphane (SFN) is an indirect antioxidant, alpha-tocopherol (vitamin E) is a direct antioxidant that acts as a free radical scavenger. Aim of this study is to investigate the protective effects of SFN and vitamin E against glucotoxic damages to the neuronal system and lifespan in C. elegans. Culture conditions that mimic clinical hyperglycemia increased the formation of reactive oxygen species (ROS) (p<0.001) and the accumulation of methylglyoxal-derived advanced glycation endproducts (MG-derived AGEs) (p<0.01) with subsequent neuronal damage and neuronal dysfunction, ultimately leading to a significant shortening of lifespan (p<0.01). Treatment with both, 20 µmol/l SFN and 200 µg/ml vitamin E, completely prevented the increase in ROS and MG-derived AGEs, abolished the glucotoxic effects on neuronal structure and function, and preserved lifespan, resulting in a life expectancy similar to untreated controls. These data emphasize the relevance of indirect and direct antioxidants as potential therapeutic options for the prevention of glucotoxic pathologies.
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Affiliation(s)
- Andrea Schlotterer
- Fifth Department of Medicine, Heidelberg University, Medical Faculty Mannheim, Mannheim, Germany
| | - Benan Masri
- Department of Medicine I, Endocrinology and Clinical Chemistry, University Hospital Heidelberg, Heidelberg, Germany
| | | | - Bernhard Karl Krämer
- Fifth Department of Medicine, Heidelberg University, Medical Faculty Mannheim, Mannheim, Germany
| | - Hans-Peter Hammes
- Fifth Department of Medicine, Heidelberg University, Medical Faculty Mannheim, Mannheim, Germany
| | - Michael Morcos
- Fifth Department of Medicine, Heidelberg University, Medical Faculty Mannheim, Mannheim, Germany.,European Center for Angioscience (ECAS), Heidelberg University, Medical Faculty Mannheim, Mannheim, Germany
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17
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Ng YT, Phang SCW, Tan GCJ, Ng EY, Botross Henien NP, M. Palanisamy UD, Ahmad B, Abdul Kadir K. The Effects of Tocotrienol-Rich Vitamin E (Tocovid) on Diabetic Neuropathy: A Phase II Randomized Controlled Trial. Nutrients 2020; 12:nu12051522. [PMID: 32456230 PMCID: PMC7284602 DOI: 10.3390/nu12051522] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/17/2020] [Accepted: 05/20/2020] [Indexed: 12/17/2022] Open
Abstract
Chronic hyperglycemia increases oxidative stress, activates inflammatory pathways and reduces nerve growth factor (NGF) among diabetic patients, which contribute to development of diabetic peripheral neuropathy (DPN). Tocotrienol-Rich Vitamin E (Tocovid) possesses potent antioxidant and anti-inflammatory properties which are postulated to target these pathogeneses in order to ameliorate DPN. This study aims to evaluate the effects of Tocovid on nerve conduction parameters and serum biomarkers among diabetic patients. This multicenter, prospective, randomized, double-blind, placebo-controlled clinical trial was conducted on 80 eligible participants. The intervention group (n = 39) was randomly allocated to receive 200 mg of Tocovid twice a day, and the control group (n = 41) received placebo twice a day. At the end of eight weeks, the nerve conduction parameters, as assessed by nerve conduction study, as well as serum biomarkers (NGF, malondialdehyde, vascular cell adhesion molecule 1, tumor necrosis factor receptor 1 and thromboxane B2) were compared between the two groups. Compared to placebo, Tocovid significantly improves the nerve conduction velocities of all nerves (+1.25 m/s, interquartile range [IQR] 3.35, p < 0.001, median nerve; +1.60 m/s, IQR 1.80, p < 0.001, sural nerve; +0.75 m/s, IQR 2.25, p < 0.001, tibial nerve). Meanwhile, the levels of serum NGF were significantly higher in the Tocovid group as compared to placebo at eight weeks post-intervention. Participants receiving Tocovid illustrated highly significant improvement in terms of nerve conduction velocities for all nerves tested after eight weeks of supplementation. In addition, Tocovid supplementation elevated the levels of serum NGF, in which its increase is postulated to reflect enhanced neuronal functions. This novel finding suggests that Tocovid could be a disease-modifying agent targeting serum NGF to improve nerve conduction velocities.
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Affiliation(s)
- Yeek Tat Ng
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Subang Jaya 47500, Selangor, Malaysia; (S.C.W.P.); (G.C.J.T.); (E.Y.N.); (N.P.B.H.); (U.D.M.P.); (B.A.); (K.A.K.)
- Tropical Medicine and Biology Platform, School of Science, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Subang Jaya 47500, Selangor, Malaysia
- Correspondence: ; Tel.: +60-3-5621-1623
| | - Sonia Chew Wen Phang
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Subang Jaya 47500, Selangor, Malaysia; (S.C.W.P.); (G.C.J.T.); (E.Y.N.); (N.P.B.H.); (U.D.M.P.); (B.A.); (K.A.K.)
| | - Gerald Chen Jie Tan
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Subang Jaya 47500, Selangor, Malaysia; (S.C.W.P.); (G.C.J.T.); (E.Y.N.); (N.P.B.H.); (U.D.M.P.); (B.A.); (K.A.K.)
| | - En Yng Ng
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Subang Jaya 47500, Selangor, Malaysia; (S.C.W.P.); (G.C.J.T.); (E.Y.N.); (N.P.B.H.); (U.D.M.P.); (B.A.); (K.A.K.)
| | - Nevein Philip Botross Henien
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Subang Jaya 47500, Selangor, Malaysia; (S.C.W.P.); (G.C.J.T.); (E.Y.N.); (N.P.B.H.); (U.D.M.P.); (B.A.); (K.A.K.)
- Tropical Medicine and Biology Platform, School of Science, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Subang Jaya 47500, Selangor, Malaysia
| | - Uma Devi M. Palanisamy
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Subang Jaya 47500, Selangor, Malaysia; (S.C.W.P.); (G.C.J.T.); (E.Y.N.); (N.P.B.H.); (U.D.M.P.); (B.A.); (K.A.K.)
| | - Badariah Ahmad
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Subang Jaya 47500, Selangor, Malaysia; (S.C.W.P.); (G.C.J.T.); (E.Y.N.); (N.P.B.H.); (U.D.M.P.); (B.A.); (K.A.K.)
| | - Khalid Abdul Kadir
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Subang Jaya 47500, Selangor, Malaysia; (S.C.W.P.); (G.C.J.T.); (E.Y.N.); (N.P.B.H.); (U.D.M.P.); (B.A.); (K.A.K.)
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18
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The neurotoxic effect of long-term use of high-dose Pregabalin and the role of alpha tocopherol in amelioration: implication of MAPK signaling with oxidative stress and apoptosis. Naunyn Schmiedebergs Arch Pharmacol 2020; 393:1635-1648. [DOI: 10.1007/s00210-020-01875-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Accepted: 04/17/2020] [Indexed: 12/31/2022]
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19
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Moisset X, Bouhassira D, Avez Couturier J, Alchaar H, Conradi S, Delmotte MH, Lanteri-Minet M, Lefaucheur JP, Mick G, Piano V, Pickering G, Piquet E, Regis C, Salvat E, Attal N. Pharmacological and non-pharmacological treatments for neuropathic pain: Systematic review and French recommendations. Rev Neurol (Paris) 2020; 176:325-352. [PMID: 32276788 DOI: 10.1016/j.neurol.2020.01.361] [Citation(s) in RCA: 134] [Impact Index Per Article: 33.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Accepted: 01/07/2020] [Indexed: 02/08/2023]
Abstract
Neuropathic pain remains a significant unmet medical need. Several recommendations have recently been proposed concerning pharmacotherapy, neurostimulation techniques and interventional management, but no comprehensive guideline encompassing all these treatments has yet been issued. We performed a systematic review of pharmacotherapy, neurostimulation, surgery, psychotherapies and other types of therapy for peripheral or central neuropathic pain, based on studies published in peer-reviewed journals before January 2018. The main inclusion criteria were chronic neuropathic pain for at least three months, a randomized controlled methodology, at least three weeks of follow-up, at least 10 patients per group, and a double-blind design for drug therapy. Based on the GRADE system, we provide weak-to-strong recommendations for use and proposal as a first-line treatment for SNRIs (duloxetine and venlafaxine), gabapentin and tricyclic antidepressants and, for topical lidocaine and transcutaneous electrical nerve stimulation specifically for peripheral neuropathic pain; a weak recommendation for use and proposal as a second-line treatment for pregabalin, tramadol, combination therapy (antidepressant combined with gabapentinoids), and for high-concentration capsaicin patches and botulinum toxin A specifically for peripheral neuropathic pain; a weak recommendation for use and proposal as a third-line treatment for high-frequency rTMS of the motor cortex, spinal cord stimulation (failed back surgery syndrome and painful diabetic polyneuropathy) and strong opioids (in the absence of an alternative). Psychotherapy (cognitive behavioral therapy and mindfulness) is recommended as a second-line therapy, as an add-on to other therapies. An algorithm encompassing all the recommended treatments is proposed.
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Affiliation(s)
- X Moisset
- Université Clermont Auvergne, Inserm, Neuro-Dol, 63000 Clermont-Ferrand, France; CHU de Clermont-Ferrand, 63000 Clermont-Ferrand, France.
| | - D Bouhassira
- INSERM U987, CETD, Ambroise-Paré Hospital, AP-HP, Boulogne-Billancourt, France; Université Versailles - Saint-Quentin-en-Yvelines, Versailles, France
| | - J Avez Couturier
- Service de Neuropédiatrie, Consultation Douleur Enfant, CIC-IT 1403, CHU de Lille, Lille, France
| | - H Alchaar
- 73, boulevard de Cimiez, Nice, France
| | - S Conradi
- CETD, CHRU de Nancy, Vandœuvre-lès-Nancy, France
| | - M H Delmotte
- GHU, Paris site Ste-Anne, Structure Douleurs, 1, rue Cabanis, Paris 14, France
| | - M Lanteri-Minet
- Université Clermont Auvergne, Inserm, Neuro-Dol, 63000 Clermont-Ferrand, France; Département d'Évaluation et Traitement de la Douleur, Centre Hospitalier Universitaire (CHU) de Nice, Fédération Hospitalo-Universitaire InovPain, Université Côte d'Azur, Nice, France
| | - J P Lefaucheur
- EA 4391, Faculté de Médecine, Université Paris Est Créteil, Créteil, France; Service de Physiologie, Explorations Fonctionnelles, Hôpital Henri-Mondor, Assistance publique-Hôpitaux de Paris, Créteil, France
| | - G Mick
- Centre d'Évaluation et Traitement de la Douleur du Voironnais, Centre Hospitalier de Voiron, Laboratoire P2S, Université de Lyon, Lyon, France
| | - V Piano
- Centre Hospitalier de Draguignan, Service Algologie 4(e), route de Montferrat, 83007 Draguignan cedex, France
| | - G Pickering
- Université Clermont Auvergne, Inserm, Neuro-Dol, 63000 Clermont-Ferrand, France; Clinical Pharmacology Department, CPC/CIC Inserm 1405, University Hospital CHU, Clermont-Ferrand, France
| | - E Piquet
- Département d'Évaluation et Traitement de la Douleur, Centre Hospitalier Universitaire (CHU) de Nice, Fédération Hospitalo-Universitaire InovPain, Université Côte d'Azur, Nice, France
| | - C Regis
- CETD, CHU Montpellier, Montpellier, France
| | - E Salvat
- Centre d'Évaluation et de Traitement de la Douleur, Hôpitaux Universitaires de Strasbourg, Université de Strasbourg, Institut des Neurosciences Cellulaires et Intégratives, Centre National de la Recherche Scientifique, Strasbourg, France
| | - N Attal
- INSERM U987, CETD, Ambroise-Paré Hospital, AP-HP, Boulogne-Billancourt, France; Université Versailles - Saint-Quentin-en-Yvelines, Versailles, France
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20
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The Role of Oxidative Stress in Peripheral Neuropathy. J Mol Neurosci 2020; 70:1009-1017. [PMID: 32103400 DOI: 10.1007/s12031-020-01495-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 02/05/2020] [Indexed: 12/17/2022]
Abstract
Peripheral neuropathy (PN) is a common disease affecting about 5% of the general population after the age of 50. Causes of PN are numerous and include genetic, diabetes, alcohol, vitamin deficiencies, and gluten sensitivity among others. This systematic review aimed to study the association between oxidative stress and PN in an attempt to better understand PN pathogenesis. A computer-based, systematic search was conducted on the PubMed database, and ensuing data from included articles was analyzed and discussed in this review. Sixty-nine papers were eligible and were used for this review. Peripheral neuropathy is associated with an increase of reactive oxygen species and a decrease in endogenous antioxidants. Genetic predisposition to oxidative damage may be a factor. Antioxidant treatment is promising regarding treatment. Though further research is necessary to better understand the underlying mechanism, it is evident that oxidative stress is implicated in the pathogenesis of - or is at least systematically present in - PN.
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21
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Wang SJ, Wang XH, Dai YY, Ma MH, Rahman K, Nian H, Zhang H. Prunella vulgaris: A Comprehensive Review of Chemical Constituents, Pharmacological Effects and Clinical Applications. Curr Pharm Des 2020; 25:359-369. [PMID: 30864498 DOI: 10.2174/1381612825666190313121608] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 03/08/2019] [Indexed: 12/17/2022]
Abstract
Prunella vulgaris (PV) is a perennial herb belonging to the Labiate family and is widely distributed in the northeastern Asian countries such as Korea, Japan, and China. It is reported to display diverse biological activities including anti-microbial, anti-cancer, and anti-inflammation as determined by in vitro or in vivo studies. So far, about 200 compounds have been isolated from PV plant and a majority of these have been characterized mainly as triterpenoids, sterols and flavonoids, followed by coumarins, phenylpropanoids, polysaccharides and volatile oils. This review summarizes and analyzes the current knowledge on the chemical constituents, pharmacological activities, mechanisms of action and clinical applications of the PV plant including its potential as a future medicinal plant. Although some of the chemical constituents of the PV plant and their mechanisms of action have been investigated, the biological activities of many of these remain unknown and further clinical trials are required to further enhance its reputation as a medicinal plant.
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Affiliation(s)
- Su-Juan Wang
- Pharmaceutical Center of Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China.,Department of Drug Preparation, Hospital of TCM and Hui Nationality Medicine, Ningxia Medical University, Ningxia 751100, China
| | - Xiao-He Wang
- Pharmaceutical Center of Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
| | - Yuan-Yuan Dai
- Pharmaceutical Center of Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
| | - Ming-Hua Ma
- Department of Pharmacy, Yangpu Hospital, Tongji University School of Medicine, Shanghai 200090, China
| | - Khalid Rahman
- School of Pharmacy and Biomolecular Sciences, Faculty of Science, Liverpool John Moores University, Liverpool L3 3AF, England, United Kingdom
| | - Hua Nian
- Pharmaceutical Center of Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
| | - Hong Zhang
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
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The Effect of Vitamin E and Vitamin C on Quality of Life in Patients with Type 2 Diabetes: A Single-Blind Randomized Clinical Trial. Jundishapur J Nat Pharm Prod 2019. [DOI: 10.5812/jjnpp.62254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Eruca sativa Meal against Diabetic Neuropathic Pain: An H 2S-Mediated Effect of Glucoerucin. Molecules 2019; 24:molecules24163006. [PMID: 31430978 PMCID: PMC6721019 DOI: 10.3390/molecules24163006] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 08/02/2019] [Accepted: 08/07/2019] [Indexed: 01/04/2023] Open
Abstract
The management of pain in patients affected by diabetic neuropathy still represents an unmet therapeutic need. Recent data highlighted the pain-relieving efficacy of glucosinolates deriving from Brassicaceae. The purpose of this study was to evaluate the anti-hyperalgesic efficacy of Eruca sativa defatted seed meal, along with its main glucosinolate, glucoerucin (GER), on diabetic neuropathic pain induced in mice by streptozotocin (STZ). The mechanism of action was also investigated. Hypersensitivity was assessed by paw pressure and cold plate tests after the acute administration of the compounds. Once bio-activated by myrosinase, both E. sativa defatted meal (1 g kg−1 p.o.) and GER (100 µmol kg−1 p.o., equimolar to meal content) showed a dose-dependent pain-relieving effect in STZ-diabetic mice, but the meal was more effective than the glucosinolate. The co-administration with H2S scavengers abolished the pain relief mediated by both E. sativa meal and GER. Their effect was also prevented by selectively blocking Kv7 potassium channels. Repeated treatments with E. sativa meal did not induce tolerance to the anti-hypersensitive effect. In conclusion, E. sativa meal can be suggested as a new nutraceutical tool for pain relief in patients with diabetic neuropathy.
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Quality of Life in Painful Peripheral Neuropathies: A Systematic Review. Pain Res Manag 2019; 2019:2091960. [PMID: 31249636 PMCID: PMC6556282 DOI: 10.1155/2019/2091960] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 04/18/2019] [Accepted: 04/28/2019] [Indexed: 12/29/2022]
Abstract
Objective Neuropathic pain is a common presenting complaint of patients with peripheral neuropathy (PN) and is considered one of the most disabling neuropathic symptoms, with detrimental effects on patients' quality of life (QoL). The aim of this review was to overview the current literature that focuses on QoL in painful PN of various aetiologies. We sought to clarify the direct effect of pain and its treatment on patients' QoL. Methodology A systematic computer-based literature search was conducted using the PubMed database to search for papers on QoL in painful PN. Information was extracted regarding prevalence, demographics, and response to treatment where relevant. Results We identified 66 articles eligible for inclusion. The vast majority of studies (n=47) focused on patients with diabetic PN. Other aetiologies of painful PN where QoL has been studied to date include gluten, immune-mediated, HIV, chemotherapy-induced, and chronic idiopathic axonal polyneuropathy. Pharmacological treatment is the mainstay in managing pain and has a direct positive and independent effect on the overall QoL. Other nonpharmacological approaches can also be of benefit, either alone or as adjuvant treatments, and are discussed. Conclusion The findings demonstrate that QoL is impaired in painful PN and should not be neglected in clinical practice. Patients' pain management and subsequent impact on QoL should routinely be assessed and monitored.
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Tempol Attenuates Neuropathic Pain by Inhibiting Nitric Oxide Production. Anal Cell Pathol (Amst) 2019; 2019:8253850. [PMID: 31223559 PMCID: PMC6541962 DOI: 10.1155/2019/8253850] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Accepted: 04/11/2019] [Indexed: 01/09/2023] Open
Abstract
Background Neuropathic pain not only affects individual life quality but also increases economic burden for the society. Treatment to alleviate neuropathic pain is required. Methodology Fifty rats were randomly assigned into sham, spinal nerve ligation, and three treatment groups with different doses of Tempol (100, 200, and 300 mg/kg, respectively), with 10 rats in each group. A neuropathic pain model was created with spinal nerve L5 and L6 ligation. Mechanical allodynia and thermal hyperalgesia were tested preoperatively (day 0) and postoperatively (days 1, 3, 5, and 7). Spinal cord levels of nitric oxide, as well as activities of nitric oxide synthase and acetylcholinesterase, were tested in postoperative day 7. Results Compared with rats in the spinal nerve ligation group, rats in Tempol treatment groups had decreased responses to mechanical pain and cold plate stimulations. A high dose of Tempol produced more attenuating effects. The level of nitric oxide and activity of nitric oxide synthase were also decreased with Tempol treatments, whereas no significant changes were observed in the activity of acetylcholinesterase. Conclusions Tempol attenuated an experimental rat model with neuropathic pain by inhibiting nitric oxide production.
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Nano curcumin supplementation reduced the severity of diabetic sensorimotor polyneuropathy in patients with type 2 diabetes mellitus: A randomized double-blind placebo- controlled clinical trial. Complement Ther Med 2019; 43:253-260. [PMID: 30935539 DOI: 10.1016/j.ctim.2019.02.014] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 02/04/2019] [Accepted: 02/18/2019] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Diabetic Sensorimotor Polyneuropathy (DSPN) is a common complication of diabetes mellitus. Curcumin is the most important ingredient found in turmeric which has a very high potential for eliminating free radicals and inhibiting oxidative stress as an antioxidant agent. The aim of this study was to determine the effect of Nano-curcumin supplementation on the severity of sensorimotor polyneuropathy in patients with Type 2 diabetes mellitus (T2DM). METHOD This parallel, double-blind randomized, placebo-controlled clinical trial was conducted on 80 diabetic patients. Participants were allocated randomly to the intervention (n = 40) and the control group (n = 40). They received 80 mg of nano-curcumin or placebo capsules for 8 weeks. Anthropometric measurements, dietary intake, physical activity, glycemic indices and the severity of DSPN were measured before and after the intervention. RESULT Supplementation of nano curcumin was accounted for a significant reduction in Glycated hemoglobin(HbA1c) (p < 0.001) and Fast Blood Sugar(FBS) (p = 0.004), total score of neuropathy (p < 0.001), total reflex score (p = 0.04) and temperature (p = 0.01) compared to placebo group. CONCLUSION Our findings indicated that curcumin supplementation for 2 months improved and reduced the severity of DSPN in patients with T2DM.
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Cruz-Álvarez LEDL, Zúñiga-Romero Á, Huerta-Cruz JC, Flores-Murrieta FJ, Reyes-García JG, Araiza-Saldaña CI, Rocha-González HI. Antiallodynic interaction and motor performance of the pregabalin/thioctic acid and pregabalin/α-tocopherol combinations in neonatal streptozotocin-induced diabetic rats. Drug Dev Res 2018; 79:362-369. [DOI: 10.1002/ddr.21473] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 08/19/2018] [Accepted: 08/25/2018] [Indexed: 12/12/2022]
Affiliation(s)
| | - Ángel Zúñiga-Romero
- Sección de Estudios de Posgrado e Investigación; Escuela Superior de Medicina, Instituto Politécnico Nacional; Ciudad de México Mexico
| | - Juan Carlos Huerta-Cruz
- Sección de Estudios de Posgrado e Investigación; Escuela Superior de Medicina, Instituto Politécnico Nacional; Ciudad de México Mexico
| | - Francisco Javier Flores-Murrieta
- Sección de Estudios de Posgrado e Investigación; Escuela Superior de Medicina, Instituto Politécnico Nacional; Ciudad de México Mexico
- Unidad de Investigación en Farmacología; Instituto Nacional de Enfermedades Respiratorias, Ismael Cosio Villegas, Secretaría de Salud; Ciudad de México Mexico
| | - Juan Gerardo Reyes-García
- Sección de Estudios de Posgrado e Investigación; Escuela Superior de Medicina, Instituto Politécnico Nacional; Ciudad de México Mexico
| | | | - Héctor Isaac Rocha-González
- Sección de Estudios de Posgrado e Investigación; Escuela Superior de Medicina, Instituto Politécnico Nacional; Ciudad de México Mexico
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Yan MKW, Khalil H. Vitamin supplements in type 2 diabetes mellitus management: A review. Diabetes Metab Syndr 2017; 11 Suppl 2:S589-S595. [PMID: 28420574 DOI: 10.1016/j.dsx.2017.04.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Accepted: 04/10/2017] [Indexed: 02/07/2023]
Abstract
Type 2 diabetes mellitus (T2DM) is a major public health challenge that affects countries across the world. The use of pharmacological therapy is often limited in some patients due to a loss of effect over time or development of adverse effects such as weight gain or hypoglycaemia. This has prompted searches into the role of non-pharmacological therapies in T2DM. The availability and use of vitamin supplements in developed countries have increased significantly and there is evidence that certain vitamins may have roles in the management of T2DM. This review examines the literature assessing the use of vitamins A, C, E, D, K and the B group vitamins (B1, B3, B7, B6, B9, B12) in the management of T2DM. No clear evidence supporting the beneficial role of any specific vitamin in the treatment of T2DM was found. Thus, it is recommended that until further studies are conducted to clarify the role of such vitamins in T2DM management, they should not be routinely recommended in clinical practice.
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Affiliation(s)
| | - Hanan Khalil
- School of Rural Health, Monash University, Victoria, Australia.
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Kaur N, Kishore L, Singh R. Chromane isolated from leaves of Dillenia indica improves the neuronal dysfunction in STZ-induced diabetic neuropathy. JOURNAL OF ETHNOPHARMACOLOGY 2017; 206:19-30. [PMID: 28506898 DOI: 10.1016/j.jep.2017.05.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 04/17/2017] [Accepted: 05/09/2017] [Indexed: 06/07/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE According to the Indian traditional medicine, Dillenia indica L. has shown therapeutic efficacy in various diseases. Fruits and leaves of the plant possess anti-oxidant and anti-inflammatory properties. Reactive oxygen species, formation of advanced glycation end products (AGEs) and apoptosis are implicated in the pathogenesis of diabetic neuropathy. AIM OF THE STUDY The aim of the present study was to explore the effect of D. indica and its isolate, chromane (CR), on thermal and mechanical hyperalgesia, allodynia, MNCV and oxidative-nitrosative stress in streptozotocin-induced experimental diabetes. MATERIAL AND METHODS Diabetes was induced by intraperitoneal administration of Streptozotocin (STZ; 65mg/kg) for the development of diabetic neuropathy. Chronic treatment with DAE (100, 200 and 400mg/kg, p.o.) and CR (5 and 10mg/kg, p.o.) for 30 days was started from the 60th day of STZ administration. Development of neuropathy was evident from a marked hyperalgesia and allodynia; reduced MNCV associated with increased formation of AGEs and reactive oxygen species. RESULTS significantly attenuated behavioral and biochemical changes associated with diabetic neuropathy. Present study suggested that DAE and CR ameliorated hyperglycemia and diabetic neuropathic pain via modulation of oxidative-nitrosative stress and reduction in AGEs formation in the diabetic rats. CONCLUSION Thus D. indica might be beneficial in chronic diabetics, ameliorate the progression of diabetic neuropathy and may also find application in diabetic neuropathic pain.
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Affiliation(s)
- Navpreet Kaur
- M.M. College of Pharmacy, M.M. University, Mullana, Ambala, Haryana 133207, India
| | - Lalit Kishore
- M.M. College of Pharmacy, M.M. University, Mullana, Ambala, Haryana 133207, India
| | - Randhir Singh
- M.M. College of Pharmacy, M.M. University, Mullana, Ambala, Haryana 133207, India.
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Bega D. Complementary and Integrative Interventions for Chronic Neurologic Conditions Encountered in the Primary Care Office. Prim Care 2017; 44:305-322. [DOI: 10.1016/j.pop.2017.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Meymandi MS, Sepehri G, Abdolsamadi M, Shaabani M, Heravi G, Yazdanpanah O, Aghtaei MM. The effects of co-administration of pregabalin and vitamin E on neuropathic pain induced by partial sciatic nerve ligation in male rats. Inflammopharmacology 2017; 25:237-246. [DOI: 10.1007/s10787-017-0325-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 02/06/2017] [Indexed: 12/23/2022]
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Raafat K, Wurglics M, Schubert-Zsilavecz M. Prunella vulgaris L. active components and their hypoglycemic and antinociceptive effects in alloxan-induced diabetic mice. Biomed Pharmacother 2016; 84:1008-1018. [PMID: 27768926 DOI: 10.1016/j.biopha.2016.09.095] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2016] [Revised: 09/06/2016] [Accepted: 09/24/2016] [Indexed: 10/20/2022] Open
Abstract
Prunella vulgaris L. (Lamiaceae) (PV) is a herbaceous plant traditionally utilized in management of diabetes and it has immunomodulatory activity. In this study, acute and subchronic antidiabetic, in-vivo antioxidant and antinociceptive effects of PV were evaluated in alloxan-induced type 1 diabetes (T1D) in a mouse model. Bio-guided fractionation, isolation, RP-HPLC, and 1H and 13C NMR identification of the active components responsible for PV effects were determined. RP-HPLC analysis showed that PV contained rosmarinic acid (RA) 4.5%, caffeic acid (CA) 9.8% and p-coumaric acid (pCA) 11.6%. Bio-guided fractionation showed that PV most active fraction was rich in caffeic acid, hence named, caffeic acid-rich fraction (CARF). RP-HPLC, and 1H and 13C NMR experiments showed that CARF contained CA (93.4%) and RA (6.6%). CARF reduced blood glucose levels and improved in-vivo oxidative-stress. It also inhibited the carbohydrate-hydrolyzing enzymes (alpha-amylase and alpha-glucosidase) and reduced HbA1c levels more significantly (p≤0.05) than that of PV and equivalent amounts of CA or RA. For longer times, CARF had significantly (p≤0.05) increased serum-insulin, ameliorated thermal hyperalgesia and tactile allodynia more significantly (p≤0.05) than the effects of PV and equivalent amounts of CA or RA. Moreover, the tested compounds showed potential restoration of the lipid peroxide levels. Consequently, CARF and PV observed increase in serum-insulin, attenuation of alpha-amylase and alpha-glucosidase, and their antioxidant potentials might be responsible for their antidiabetogenic and antinociceptive properties. In conclusion, CARF isolated from PV could be a potential therapeutic agent to ameliorate T1D and related complications.
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Affiliation(s)
- K Raafat
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Beirut Arab University, 115020 Beirut, Lebanon.
| | - M Wurglics
- Institute of Pharmaceutical Chemistry, Johann Wolfgang Goethe University Frankfurt, Marie-Curie-Straße 9, 60438 Frankfurt/Main, Germany
| | - M Schubert-Zsilavecz
- Institute of Pharmaceutical Chemistry, Johann Wolfgang Goethe University Frankfurt, Marie-Curie-Straße 9, 60438 Frankfurt/Main, Germany
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Nuclear abnormalities in buccal mucosa cells of patients with type I and II diabetes treated with folic acid. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2016; 797:1-8. [DOI: 10.1016/j.mrgentox.2015.12.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 12/04/2015] [Accepted: 12/14/2015] [Indexed: 02/06/2023]
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Alabdali M, Qrimli M, Barnett C, Abraham A, Breiner A, Katzberg HD, Aljaafari D, Albulaihe H, Perkins BA, Bril V. Choosing drugs for the treatment of diabetic neuropathy. Expert Opin Pharmacother 2015; 16:1805-14. [DOI: 10.1517/14656566.2015.1067680] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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