1
|
Singh G, Singh R, Monga V, Mehan S. 3,5-Disubstituted-thiazolidine-2,4-dione hybrids as antidiabetic agents: Design, synthesis, in-vitro and In vivo evaluation. Eur J Med Chem 2024; 266:116139. [PMID: 38252989 DOI: 10.1016/j.ejmech.2024.116139] [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: 11/25/2023] [Revised: 12/26/2023] [Accepted: 01/09/2024] [Indexed: 01/24/2024]
Abstract
Diabetes is one of the fastest-growing metabolic disorders, nearly doubling the number of patients each year. There are different treatment approaches available for the management of diabetes, which lacks due to their side effects. The inhibition of enzymes involved in the metabolism of complex polysaccharides to monosaccharides has proven beneficial in patients with type 2 diabetes mellitus. Two enzymes, α-amylase and α-glucosidase, have emerged as potential drug targets and are widely explored for drug development against type 2 diabetes mellitus. In this context, thiazolidine-2,4-diones (TZDs) have emerged as potential drug candidates for developing newer molecules against α-amylase and α-glucosidase. Nineteen TZD-hybrids were synthesized and evaluated in vitro α-amylase and α-glucosidase inhibitory activity. The compounds 7i, 7k, and 7p have emerged as the best dual inhibitors with IC50 of 10.33 ± 0.11-20.94 ± 0.76 μM and 10.19 ± 0.25-24.07 ± 1.56 μM against α-glucosidase and α-amylase, respectively. The derivatives had good anti-oxidant activity, displaying IC50 = 14.95 ± 0.65-23.27 ± 0.99 μM. The compounds 7k and 7p showed the best inhibition of reactive oxygen species in the PNAC-1 cells. The molecules exhibit good binding within the active site of α-amylase (PDB id: 1B2Y) and α-glucosidase (PDB id: 3W37), displaying binding energies of -7.5 to -10.7 kcal/mol and -7.4 to -10.3 kcal/mol, respectively. Further, the compounds were nontoxic (LD50 = 500-1311 mg/kg) and possessed good GI absorption. The compounds 7i, 7k, and 7p were evaluated in vivo antidiabetic activity in an STZ-induced diabetic model in Wistar rats. The compound 7p emerged as the best compound in the in vivo studies; however, the activity was lesser than that of the standard drug pioglitazone.
Collapse
Affiliation(s)
- Gurpreet Singh
- Department of Pharmaceutical Chemistry, ISF College of Pharmacy, GT Road, Ghal Kalan, Moga, Punjab, India; Research Scholar, IK Gujral Punjab Technical University, Jalandhar, Punjab, India
| | - Rajveer Singh
- Department of Pharmacognosy, ISF College of Pharmacy, GT Road, Ghal Kalan, Moga, Punjab, India
| | - Vikramdeep Monga
- Drug Design and Molecular Synthesis Laboratory, Department of Pharmaceutical Sciences and Natural Products, Central University of Punjab, VPO-Ghudda, Bathinda, Punjab, India.
| | - Sidharth Mehan
- Department of Pharmacology, ISF College of Pharmacy, GT Road, Ghal Kalan, Moga, Punjab, India, (Affiliated to IK Gujral Punjab Technical University, Jalandhar, Punjab, India).
| |
Collapse
|
2
|
Sudarshana KA, Sarma MJ, Radhakrishnan M, Chakravarty S, Srihari P, Mehta G. A protocol for directly accessing geminal C-4 diarylated pyrazol-5(4 H)-ones via tandem C-H aryne insertion and their inceptive neurobiological evaluation. Org Biomol Chem 2024; 22:714-719. [PMID: 38165701 DOI: 10.1039/d3ob01932b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
Geminal C-4 diarylation of substituted pyrazol-5(4H)-ones with in situ generated arynes as the aryl source has been achieved in a one-flask operation. All the newly accessed C4-gem-diarylated pyrazolone entities were found to be non-cytotoxic with varying AChE enzyme inhibitory activities and BBB permeability attributes that augur well for further advancement towards CNS therapeutics for untreatable disorders.
Collapse
Affiliation(s)
- K A Sudarshana
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Manas Jyoti Sarma
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India.
- School of Chemistry, University of Hyderabad, Hyderabad-500046, India.
| | - Mydhili Radhakrishnan
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India
| | - Sumana Chakravarty
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India
| | - Pabbaraja Srihari
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Goverdhan Mehta
- School of Chemistry, University of Hyderabad, Hyderabad-500046, India.
| |
Collapse
|
3
|
Anoush M, Bijani S, Moslemifar F, Jahanpour F, Kalantari-Hesari A, Hosseini MJ. Edaravone Improves Streptozotocin-Induced Memory Impairment via Alleviation of Behavioral Dysfunction, Oxidative Stress, Inflammation, and Histopathological Parameters. Behav Neurol 2023; 2023:9652513. [PMID: 37476485 PMCID: PMC10356234 DOI: 10.1155/2023/9652513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 05/21/2023] [Accepted: 06/30/2023] [Indexed: 07/22/2023] Open
Abstract
Alzheimer's disease (AD), as the main cause of dementia, has a progressive and neurodegenerative pattern with number of cases increasing over the next decades. Therefore, discovering an effective treatment with the ability to invert memory impairment and pathophysiological events of AD seems to be required. The present study performed to investigate the probable effects of Edaravone (EDV) in AD-like disorder induced by intracerebroventricular streptozotocin (ICV-STZ) administration in mice. This study also compares the two different methods of ICV-STZ in the memory impairment induction. NMRI male mice were administrated with 3 mg/kg of STZ for two times during 48 hours span, and after 24 hours, animals were treated with EDV (5 and 10 mg/kg), Donepezil, and Memantine for 14 days. After behavioral tests regarding memory and cognitive function, animals were sacrificed, and the hippocampi were utilized for further analyses. Our results demonstrated that administration of STZ induced memory impairment in the Morris water maze (MWM) test and decreased the discriminative factor in novel object recognition (NOR). The biochemical output shows a significant decrease in ferric reducing antioxidant power (FRAP) and glutathione (GSH) levels followed by increase in malondialdehyde (MDA) and protein carbonylation (PCO) levels. The output showed no difference between the patterns of AD-like disorder induction. Following our treatment groups, administration of EDV (5 and 10 mg/kg), Donepezil, and Memantine significantly improved memory performance and discriminatory behavior. Aforementioned treatments managed to improve FRAP and GSH content of hippocampus, while significantly attenuating MDA, PCO, and nitric oxide overproduction. In addition, no significant difference has been observed between the effect of 5 and 10 mg/kg EDV application. It was supposed that EDV managed to ameliorate memory dysfunction, discriminatory behavior, oxidative stress, and cellular antioxidant power in a dose-independent pattern in mice.
Collapse
Affiliation(s)
- Mahdieh Anoush
- Zanjan Applied Pharmacology Research Center, Zanjan University of Medical sciences, Zanjan, Iran
- Department of Pharmacology and Toxicology, School of Pharmacy, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Soroush Bijani
- Zanjan Applied Pharmacology Research Center, Zanjan University of Medical sciences, Zanjan, Iran
- Department of Pharmacology and Toxicology, School of Pharmacy, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Fatemeh Moslemifar
- Zanjan Applied Pharmacology Research Center, Zanjan University of Medical sciences, Zanjan, Iran
- Department of Pharmacology and Toxicology, School of Pharmacy, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Fatemeh Jahanpour
- Zanjan Applied Pharmacology Research Center, Zanjan University of Medical sciences, Zanjan, Iran
- Department of Pharmacology and Toxicology, School of Pharmacy, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Ali Kalantari-Hesari
- Department of Pathobiology, Faculty of Veterinary Science, Bu-Ali Sina University, Hamedan, Iran
| | - Mir-Jamal Hosseini
- Zanjan Applied Pharmacology Research Center, Zanjan University of Medical sciences, Zanjan, Iran
- Department of Pharmacology and Toxicology, School of Pharmacy, Zanjan University of Medical Sciences, Zanjan, Iran
| |
Collapse
|
4
|
Guttapadu R, Korla K, Uk S, Annam V, Ashok P, Chandra N. Identification of Probucol as a candidate for combination therapy with Metformin for Type 2 diabetes. NPJ Syst Biol Appl 2023; 9:18. [PMID: 37221264 DOI: 10.1038/s41540-023-00275-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 04/26/2023] [Indexed: 05/25/2023] Open
Abstract
Type 2 Diabetes (T2D) is often managed with metformin as the drug of choice. While it is effective overall, many patients progress to exhibit complications. Strategic drug combinations to tackle this problem would be useful. We constructed a genome-wide protein-protein interaction network capturing a global perspective of perturbations in diabetes by integrating T2D subjects' transcriptomic data. We computed a 'frequently perturbed subnetwork' in T2D that captures common perturbations across tissue types and mapped the possible effects of Metformin onto it. We then identified a set of remaining T2D perturbations and potential drug targets among them, related to oxidative stress and hypercholesterolemia. We then identified Probucol as the potential co-drug for adjunct therapy with Metformin and evaluated the efficacy of the combination in a rat model of diabetes. We find Metformin-Probucol at 5:0.5 mg/kg effective in restoring near-normal serum glucose, lipid, and cholesterol levels.
Collapse
Affiliation(s)
- Ranjitha Guttapadu
- IISc Mathematics Initiative, Indian Institute of Science, Bengaluru, Karnataka, 560012, India
| | - Kalyani Korla
- Department of Biochemistry, Indian Institute of Science, Bangalore, Karnataka, 560012, India
| | - Safnaz Uk
- Department of Pharmacology, K.L.E. University's College of Pharmacy, Bangalore, Karnataka, 560010, India
| | - Vamseedhar Annam
- Department of Pathology, Rajarajeshwari Medical College and Hospital, Bangalore, Karnataka, 560074, India
| | - Purnima Ashok
- Department of Pharmacology, K.L.E. University's College of Pharmacy, Bangalore, Karnataka, 560010, India
| | - Nagasuma Chandra
- IISc Mathematics Initiative, Indian Institute of Science, Bengaluru, Karnataka, 560012, India.
- Department of Biochemistry, Indian Institute of Science, Bangalore, Karnataka, 560012, India.
- Centre for Biosystems Science and Engineering, Indian Institute of Science, Bengaluru, Karnataka, 560012, India.
| |
Collapse
|
5
|
Yang CC, Wang MH, Soung HS, Tseng HC, Lin FH, Chang KC, Tsai CC. Through Its Powerful Antioxidative Properties, L-Theanine Ameliorates Vincristine-Induced Neuropathy in Rats. Antioxidants (Basel) 2023; 12:antiox12040803. [PMID: 37107178 PMCID: PMC10135327 DOI: 10.3390/antiox12040803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 03/20/2023] [Accepted: 03/22/2023] [Indexed: 03/29/2023] Open
Abstract
L-theanine (LT), which is a major amino acid found in green tea, was shown to alleviate Vincristine (VCR)-induced peripheral neuropathy and associated neuronal functional changes in rats. To induce peripheral neuropathy, rats were administered VCR at a dose of 100 mg/kg/day intraperitoneally on days 1–5 and 8–12, while control rats received LT at doses of 30, 100, and 300 mg/kg/day intraperitoneally for 21 days or saline solution. Electrophysiological measurements were taken to evaluate the nerve functional loss and recovery through motor and sensory nerve conduction velocities. The sciatic nerve was examined for several biomarkers, including nitric oxide (NO), malondialdehyde (MDA), glutathione (GSH), superoxide dismutase (SOD), catalase (CAT), total calcium, IL-6, IL-10, MPO, and caspase-3. The results showed that VCR caused significant hyperalgesia and allodynia in rats; decreased nerve conduction velocity; increased NO and MDA levels; and decreased GSH, SOD, CAT, and IL-10 levels. LT was found to significantly reduce VCR-induced nociceptive pain thresholds, decrease oxidative stress levels (NO, MDA), increase antioxidative strength (GSH, SOD, CAT), and reduce neuroinflammatory activity and apoptosis markers (caspase-3). LT’s antioxidant, calcium homeostasis, anti-inflammatory, anti-apoptotic, and neuroprotective properties make it a potential adjuvant to conventional treatment in VCR-induced neuropathy in rats.
Collapse
Affiliation(s)
- Chih-Chuan Yang
- Department of Neurosurgery, Mackay Memorial Hospital, Taipei 10449, Taiwan;
- Department of Nursing, Mackay Junior College of Medicine, Nursing and Management, Taipei 11260, Taiwan
| | - Mao-Hsien Wang
- Department of Anesthesia, En Chu Kon Hospital, Sanshia District, New Taipei City 23702, Taiwan
| | - Hung-Sheng Soung
- Department of Psychiatry, Yuan-Shan Br. of Taipei Veteran General Hospital, Yilan County 26604, Taiwan
- Department of Biomedical Engineering, National Defense Medical Center, Taipei 11490, Taiwan
| | - Hsiang-Chien Tseng
- Department of Anesthesiology, Shin Kong Wu Ho-Su Memorial Hospital, Taipei 11101, Taiwan
- School of Medicine, Fu Jen Catholic University, New Taipei City 24205, Taiwan
| | - Feng-Huei Lin
- Institute of Biomedical Engineering, National Taiwan University, Taipei 10051, Taiwan
- Institute of Biomedical Engineering and Nanomedicine, National Health Research, Zhunan Town, Miaoli County 35053, Taiwan
| | - Kuo-Chi Chang
- Institute of Taiwan Instrument Research, National Applied Research Laboratories, Hsinchu 300092, Taiwan
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 10608, Taiwan
| | - Cheng-Chia Tsai
- Department of Neurosurgery, Mackay Memorial Hospital, Taipei 10449, Taiwan;
- Department of Medicine, Mackay Medical College, New Taipei City 252, Taiwan
- Correspondence: ; Tel.: +886-928260400
| |
Collapse
|
6
|
Pothion H, Lihrmann I, Duclos C, Riou G, Cartier D, Boukhzar L, Lefranc B, Leprince J, Guérout N, Marie JP, Anouar Y. The SELENOT mimetic PSELT promotes nerve regeneration by increasing axonal myelination in a facial nerve injury model in female rats. J Neurosci Res 2022; 100:1721-1731. [PMID: 35730417 PMCID: PMC9545325 DOI: 10.1002/jnr.25098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 03/17/2022] [Accepted: 06/06/2022] [Indexed: 01/31/2023]
Abstract
Peripheral nerve injury (PNI) is frequent and many patients suffer lifelong disabilities in severe cases. Although the peripheral nervous system is able to regenerate, its potential is limited. In this study, we tested in a nerve regeneration model in rat the potential beneficial effect of a short mimetic peptide, named PSELT, which derives from SELENOT, an essential thioredoxin-like selenoprotein endowed with neuroprotective and antioxidant activities. For this purpose, the right facial nerve of female Long-Evans rats was axotomized then bridged with a free femoral vein interposition graft. PSELT (1 μM) was injected into the vein immediately and 48 h after the injury, and the effects observed were compared to those found after an end-to-end suture used as a gold standard treatment. Whisking behavior, electrophysiological potential, and histological analyses were performed 3 months after injury to determine the effects of these treatments. These analyses revealed that PSELT-treated animals exhibit a better motor recovery in terms of protraction amplitude and velocity of vibrissae compared to control and end-sutured nerve animal groups. Moreover, administration of PSELT following injury enhanced muscle innervation, axonal elongation, and myelination of newly formed nerve fibers. Altogether, these results indicate that a PSELT-based treatment is sufficient to enhance facial nerve myelination and regeneration and could represent a new therapeutic tool to treat PNI.
Collapse
Affiliation(s)
- Hugo Pothion
- Normandie Univ, UNIROUEN, INSERM U1239, Neuroendocrine, Endocrine and Germinal Differentiation and Communication Laboratory, Institute for Research and Innovation in Biomedicine (IRIB), Rouen, France.,Normandie Univ, UNIROUEN, UR 3830, Groupe de Recherche sur l'Handicap Ventilatoire et Neurologique, Institute for Research and Innovation in Biomedicine (IRIB), Rouen, France.,Fédération Hospitalo-Universitaire (FHU) Surface, Rouen, France
| | - Isabelle Lihrmann
- Normandie Univ, UNIROUEN, INSERM U1239, Neuroendocrine, Endocrine and Germinal Differentiation and Communication Laboratory, Institute for Research and Innovation in Biomedicine (IRIB), Rouen, France
| | - Celia Duclos
- Normandie Univ, UNIROUEN, UR 3830, Groupe de Recherche sur l'Handicap Ventilatoire et Neurologique, Institute for Research and Innovation in Biomedicine (IRIB), Rouen, France
| | - Gaëtan Riou
- Normandie Univ, UNIROUEN, INSERM U1234, Institute for Research and Innovation in Biomedicine (IRIB), Rouen, France
| | - Dorthe Cartier
- Normandie Univ, UNIROUEN, INSERM U1239, Neuroendocrine, Endocrine and Germinal Differentiation and Communication Laboratory, Institute for Research and Innovation in Biomedicine (IRIB), Rouen, France
| | - Loubna Boukhzar
- Normandie Univ, UNIROUEN, INSERM U1239, Neuroendocrine, Endocrine and Germinal Differentiation and Communication Laboratory, Institute for Research and Innovation in Biomedicine (IRIB), Rouen, France
| | - Benjamin Lefranc
- Normandie Univ, UNIROUEN, INSERM U1239, Neuroendocrine, Endocrine and Germinal Differentiation and Communication Laboratory, Institute for Research and Innovation in Biomedicine (IRIB), Rouen, France.,Normandie Univ, UNIROUEN, UMS-UAR HERACLES, PRIMACEN, Cell Imaging Platform of Normandy, Institute for Research and Innovation in Biomedicine (IRIB), Rouen, France
| | - Jérôme Leprince
- Normandie Univ, UNIROUEN, INSERM U1239, Neuroendocrine, Endocrine and Germinal Differentiation and Communication Laboratory, Institute for Research and Innovation in Biomedicine (IRIB), Rouen, France.,Normandie Univ, UNIROUEN, UMS-UAR HERACLES, PRIMACEN, Cell Imaging Platform of Normandy, Institute for Research and Innovation in Biomedicine (IRIB), Rouen, France
| | - Nicolas Guérout
- Normandie Univ, UNIROUEN, UR 3830, Groupe de Recherche sur l'Handicap Ventilatoire et Neurologique, Institute for Research and Innovation in Biomedicine (IRIB), Rouen, France.,Fédération Hospitalo-Universitaire (FHU) Surface, Rouen, France
| | - Jean-Paul Marie
- Normandie Univ, UNIROUEN, UR 3830, Groupe de Recherche sur l'Handicap Ventilatoire et Neurologique, Institute for Research and Innovation in Biomedicine (IRIB), Rouen, France.,Fédération Hospitalo-Universitaire (FHU) Surface, Rouen, France.,Otorhinolaryngology and Head Neck Surgery Department, Rouen University Hospital, Rouen, France
| | - Youssef Anouar
- Normandie Univ, UNIROUEN, INSERM U1239, Neuroendocrine, Endocrine and Germinal Differentiation and Communication Laboratory, Institute for Research and Innovation in Biomedicine (IRIB), Rouen, France.,Fédération Hospitalo-Universitaire (FHU) Surface, Rouen, France
| |
Collapse
|
7
|
Chen SM, Wang MH, Soung HS, Tseng HC, Fang CH, Lin YW, Yang CC, Tsai CC. Neuroprotective effect of l-theanine in a rat model of chronic constriction injury of sciatic nerve-induced neuropathic pain. J Formos Med Assoc 2021; 121:802-814. [PMID: 34531102 DOI: 10.1016/j.jfma.2021.08.023] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 08/24/2021] [Accepted: 08/26/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND/PURPOSE We investigated the protective efficacy of l-theanine (LT), the major amino acid components of green tea, on chronic constriction injury (CCI) of sciatic nerve-induced neuropathic pain (NP) development and neuronal functional changes in rats. METHODS Rats with NP induced by CCI of the left sciatic nerve and sham-operated rats received LT or saline solution, with pain sensitive tests of thermal hyperalgesia and mechanical allodynia. Motor and sensory nerve conduction velocities were measured after surgery. Subsequently, the rats were sacrificed; the sciatic nerve was excised, homogenized, prepared and subjected for estimation of nitric oxide (NO), malondialdehyde (MDA), glutathione (GSH), superoxide dismutase (SOD), catalase (CAT), tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), interleukin-6 (IL-6), myeloperoxidase (MPO), and caspase-3. RESULTS CCI produced a significant increase in hyperalgesia and allodynia, an increase in SFI, a decrease in nerve conduction velocity, increases in NO, MDA, TNF-α, IL-1β, IL-6, MPO, and caspase-3 levels, as well as reduction of GSH, SOD, and CAT in the rat sciatic nerve. LT treatment significantly and dose-dependently alleviated CCI-induced nociceptive pain thresholds and ameliorated abnormal nerve conduction and functional loss in rats with CCI. Moreover, LT treatment reduced NO and MDA levels, increased antioxidative strength, and markedly suppressed the levels of neuroinflammatory and apoptotic markers in injured sciatic nerves. CONCLUSION This is the first report on the ameliorative effect of LT in CCI-induced NP in rats. This effect might be attributed to its anti-oxidative, anti-inflammatory, anti-apoptotic, and neuroprotective, thus making it potentially useful as an adjuvant to conventional treatment.
Collapse
Affiliation(s)
- Shu-Mei Chen
- Department of Neurosurgery, Taipei Medical University Hospital, Taipei Medical University, Taipei, 110, Taiwan, ROC; Department of Surgery, School of Medicine, Taipei Medical University, Taipei, 110, Taiwan, ROC
| | - Mao-Hsien Wang
- Department of Anesthesia, En Chu Kon Hospital, Sanshia District, New Taipei City, 23702, Taiwan, ROC
| | - Hung-Sheng Soung
- Department of Psychiatry, Yuan-Shan Br. of Taipei Veteran General Hospital, Yilan County, 26604, Taiwan, ROC; Department of Biomedical Engineering, National Defense Medical Center, Taipei, 11490, Taiwan, ROC
| | - Hsiang-Chien Tseng
- Department of Anesthesiology, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, 11101, Taiwan, ROC; School of Medicine, Fu Jen Catholic University, New Taipei City, 24205, Taiwan, ROC
| | - Chih-Hsiang Fang
- China Medical University Hospital, Taichung City, 404332, Taiwan, ROC; Trauma and Emergency Center, China Medical University Hospital, Taichung City, 404018, Taiwan, ROC
| | - Yi-Wen Lin
- Institute of Biomedical Engineering, National Taiwan University, Taipei, 10051, Taiwan, ROC
| | - Chih-Chuan Yang
- Department of Neurosurgery, Mackay Memorial Hospital, Taipei, 10449, Taiwan, ROC; Department of Nursing, Mackay Junior College of Medicine, Nursing and Management, Taipei, 11260, Taiwan, ROC
| | - Cheng-Chia Tsai
- Department of Neurosurgery, Mackay Memorial Hospital, Taipei, 10449, Taiwan, ROC; Department of Medicine, Mackay Medical College, New Taipei City, 252, Taiwan, ROC.
| |
Collapse
|
8
|
Shinouchi R, Shibata K, Hashimoto T, Jono S, Hasumi K, Nobe K. SMTP-44D improves diabetic neuropathy symptoms in mice through its antioxidant and anti-inflammatory activities. Pharmacol Res Perspect 2020; 8:e00648. [PMID: 33215875 PMCID: PMC7677968 DOI: 10.1002/prp2.648] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 07/21/2020] [Accepted: 07/27/2020] [Indexed: 01/28/2023] Open
Abstract
Diabetic neuropathy (DN) is one of the major complications of diabetes. However, there are few approved effective therapies for painful or insensate DN. Recent studies have implicated oxidative stress and inflammation in the pathogenesis of DN, and suppressing these could be an important therapeutic strategy. We previously reported that Stachybotrys microspora triprenyl phenol-44D (SMTP-44D) exhibits both antioxidant and anti-inflammatory activities. The aim of this study was to evaluate the effects of SMTP-44D in a mouse model of streptozotocin-induced DN. SMTP-44D was administered for 3 weeks after the disease induction, and its effects were evaluated on the basis of mechanical and thermal thresholds, blood flow in the bilateral hind paw, and blood flow and conduction velocity in the sciatic nerve. Furthermore, the levels of inflammatory factors, such as tumor necrosis factor (TNF)-α, interleukin (IL)-1β, IL-6 and malondialdehyde (MDA), in the sciatic nerve were assessed. Neurological degeneration was assessed by measuring myelin thickness and g-ratio in the sciatic nerve. SMTP-44D treatment significantly improved allodynia, hyperalgesia, blood flow, and conduction velocity in DN model mice in a dose-dependent manner. Neurological degeneration was also significantly improved, accompanied by decreased levels of inflammatory factors (TNF-α, 57.8%; IL-1β, 51.4%; IL-6, 62.8%; and MDA, 40.7% reduction rate against the diabetes mellitus + normal saline group). Thus, SMTP-44D can improve allodynia and hyperalgesia in DN without affecting the body weight and blood glucose levels, which may be due to its antioxidant and anti-inflammatory properties. In conclusion, SMTP-44D could be a potential therapeutic agent for the treatment of DN.
Collapse
Affiliation(s)
- Ryosuke Shinouchi
- Division of PharmacologyDepartment of Pharmacology, Toxicology & TherapeuticsSchool of PharmacyShowa UniversityShinagawa‐kuTokyoJapan
- Pharmacology Research CenterShowa UniversityShinagawa‐kuTokyoJapan
| | - Keita Shibata
- Division of PharmacologyDepartment of Pharmacology, Toxicology & TherapeuticsSchool of PharmacyShowa UniversityShinagawa‐kuTokyoJapan
- Pharmacology Research CenterShowa UniversityShinagawa‐kuTokyoJapan
| | - Terumasa Hashimoto
- Division of PharmacologyDepartment of Pharmacology, Toxicology & TherapeuticsSchool of PharmacyShowa UniversityShinagawa‐kuTokyoJapan
- Pharmacology Research CenterShowa UniversityShinagawa‐kuTokyoJapan
| | - Shiori Jono
- Division of PharmacologyDepartment of Pharmacology, Toxicology & TherapeuticsSchool of PharmacyShowa UniversityShinagawa‐kuTokyoJapan
- Pharmacology Research CenterShowa UniversityShinagawa‐kuTokyoJapan
| | - Keiji Hasumi
- Department of Applied Biological ScienceTokyo University of Agriculture and TechnologyFuchu‐shiTokyoJapan
- TMS Co., LtdFuchu‐shiTokyoJapan
| | - Koji Nobe
- Division of PharmacologyDepartment of Pharmacology, Toxicology & TherapeuticsSchool of PharmacyShowa UniversityShinagawa‐kuTokyoJapan
- Pharmacology Research CenterShowa UniversityShinagawa‐kuTokyoJapan
| |
Collapse
|
9
|
Ojo OA, Okesola MA, Ekakitie LI, Ajiboye BO, Oyinloye BE, Agboinghale PE, Onikanni AS. Gongronema latifolium Benth. leaf extract attenuates diabetes-induced neuropathy via inhibition of cognitive, oxidative stress and inflammatory response. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2020; 100:4504-4511. [PMID: 32400016 DOI: 10.1002/jsfa.10491] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 05/05/2020] [Accepted: 05/13/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Gongronema latifolium (G. latifolium) Benth. leaves are traditionally used to treat diabetes mellitus (DM) and other diseases in Nigeria and West Africa. This study was performed to evaluate the neuroprotective effect of aqueous extract of G. latifolium leaf against DM. Antidiabetic activity of G. latifolium extracts (6.36, 12.72 and 25.44 mg kg-1 , i.p.) was determined in alloxan-induced diabetic rats. Fasting blood glucose level and oxidative stress markers catalase (CAT), superoxide dismutase (SOD), glutathione peroxidase (GPx), malondialdehyde (MDA), and nitric oxide (NO) levels were measured. Cognitive biomarkers acetylcholinesterase (AChE), butyrylcholinesterase (BChE), dopamine (DOPA), serotonin, epinephrine and norepinephrine and cyclooxygenase (COX-2) were measured in the brain of controls and of G. latifolium-treated diabetic rats. RESULTS Administration of G. latifolium leaf extract to diabetic rats significantly restored the alterations in the levels of fasting blood glucose (FBG). The MDA and NO levels were significantly reduced with an improvement in CAT, SOD, and GPx activity in the kidneys and brains of diabetic rats treated with G. latifolium. Gongronema latifolium also significantly decreased the levels of AChE, BChE, DOPA, serotonin, epinephrine, and nor-epinephrine in diabetic rats. G. latifolium effectively ameliorated COX-2 in diabetic rats. CONCLUSION This study showed that leaf extract of G. latifolium improved antioxidant defense against oxidative stress. It displays a neuroprotective effect resulting in the modulation of brain neurotransmitters, which could be considered as a promising treatment therapy. © 2020 Society of Chemical Industry.
Collapse
Affiliation(s)
- Oluwafemi Adeleke Ojo
- Department of Biochemistry, Landmark University, Omu-Aran, Kwara State, Nigeria
- Phytomedicine and Nutraceutical Research Laboratory, Department of Biochemistry, College of Sciences, Afe Babalola University, Ado-Ekiti, Ekiti State, Nigeria
| | - Mary Abiola Okesola
- Department of Biochemistry, College of Sciences, Covenant University, Ota, Ogun State, Nigeria
| | - Lisa Ilobekemen Ekakitie
- Phytomedicine and Nutraceutical Research Laboratory, Department of Biochemistry, College of Sciences, Afe Babalola University, Ado-Ekiti, Ekiti State, Nigeria
| | - Basiru Olaitan Ajiboye
- Phytomedicine and Nutraceutical Research Laboratory, Department of Biochemistry, College of Sciences, Afe Babalola University, Ado-Ekiti, Ekiti State, Nigeria
| | - Babatunji Emmanuel Oyinloye
- Phytomedicine and Nutraceutical Research Laboratory, Department of Biochemistry, College of Sciences, Afe Babalola University, Ado-Ekiti, Ekiti State, Nigeria
- Biotechnology and Structural Biology (BSB) Group, Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa 3886, South Africa
| | - Precious Eseose Agboinghale
- Phytomedicine and Nutraceutical Research Laboratory, Department of Biochemistry, College of Sciences, Afe Babalola University, Ado-Ekiti, Ekiti State, Nigeria
| | - Amos Sunday Onikanni
- Phytomedicine and Nutraceutical Research Laboratory, Department of Biochemistry, College of Sciences, Afe Babalola University, Ado-Ekiti, Ekiti State, Nigeria
| |
Collapse
|
10
|
Alzoubi KH, Aburashed ZO, Mayyas F. Edaravone protects from memory impairment induced by chronic L-methionine administration. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2020; 393:1221-1228. [PMID: 31989235 DOI: 10.1007/s00210-020-01827-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Accepted: 01/17/2020] [Indexed: 02/06/2023]
Abstract
Hyperhomocysteinemia is a well-known cause of cognitive impairment and neurodegeneration. Increased oxidative stress in the brain has a major possible role in hyperhomocysteinemia-induced pathogenesis. Edaravone is a potent free radical scavenger that has a neuroprotective effect against memory impairment in several experimental models. The current study investigated the possible protective effect of edaravone in L-methionine-induced vascular dementia in a rat model. L-methionine was given (1.7 mg/kg/day) through oral gavage, while edaravone was given (6 mg/kg/day) intraperitoneally. The administration of methionine and edaravone started concomitantly and continued for a total of 9 weeks. Spatial learning and memory were assessed using the radial arm water maze (RAWM). Changes in the oxidative stress-related biomarkers in the hippocampus were assessed using enzymatic assays. Chronic L-methionine administration resulted in short-term and long-term memory impairment, whereas edaravone prevented such effect. Furthermore, edaravone ameliorated L-methionine induced decrease in the activity of the antioxidant enzymes catalase and glutathione peroxidase as well as the ratio of reduced glutathione to oxidized glutathione (GSH/GSSG ratio). Edaravone also prevented increase in the oxidized glutathione (GSSG) secondary to chronic L-methionine administration. In conclusion, the current study suggests that memory impairment and oxidative stress secondary to chronic L-methionine administration can be prevented by edaravone, probably via enhancing antioxidant mechanisms in the hippocampus.
Collapse
Affiliation(s)
- Karem H Alzoubi
- Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, 22110, Jordan.
| | - Zainah O Aburashed
- Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, 22110, Jordan
| | - Fadia Mayyas
- Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, 22110, Jordan
| |
Collapse
|
11
|
Shoaib A, Siddiqui HH, Dixit RK, Siddiqui S, Deen B, Khan A, Alrokayan SH, Khan HA, Ahmad P. Neuroprotective Effects of Dried Tubers of Aconitum napellus. PLANTS (BASEL, SWITZERLAND) 2020; 9:plants9030356. [PMID: 32168878 PMCID: PMC7154901 DOI: 10.3390/plants9030356] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 02/15/2020] [Accepted: 02/18/2020] [Indexed: 02/07/2023]
Abstract
The present study was designed to explore the neuroprotective properties of Aconitum napellus (Ranunculaceae). The plant detoxification was done using either water, or cow or goat milk as per the Ayurvedic shodhana method. The evaluation of the neuroprotective role of A. napellus was performed on diabetic neuropathy induced by streptozotocin in Sprague Dawley (SD) rats. Body mass, blood sugar level, oral glucose tolerance test, hyperalgesia, cold allodynia, motor co-ordination test, and locomotor activity, oxidative biomarkers (TBARS, reduced glutathione, catalase and superoxide dismutase) and sciatic nerve histomorphology were assessed. The in vitro studies were done on human neuroblastoma cell line SHSY-5Y and used an MTT assay to assess the antiproliferative activity of different extracts. Results suggest that the goat milk treated chloroform extract has less percentage of aconitine. After administration of the detoxified chloroform extract to the diabetic animals, there was a significant improvement in the myelination and degenerative changes of the nerve fibers along with behavioral changes (p < 0.05 as compared with diabetic control group). The findings of the in vitro research show an effective neuroprotective role of A. napellus. This suggests that A. napellus should be further investigated for its effect in diabetic pathology.
Collapse
Affiliation(s)
- Ambreen Shoaib
- Department of Clinical Pharmacy, Faculty of Pharmacy, Jazan University, Jazan 45142, Saudi Arabia;
- Department of Pharmacology, Faculty of Pharmacy, Integral University, Lucknow 226026, India;
| | | | - Rakesh Kumar Dixit
- Department of Pharmacology, King George Medical University, Lucknow, Uttar Pradesh 226003, India;
| | - Sahabjada Siddiqui
- Department of Biotechnology, Era’s Lucknow Medical College & Hospital, Era University, Lucknow 226003, India;
| | - Badrud Deen
- Department of Pharmacology, Faculty of Pharmacy, Integral University, Lucknow 226026, India;
- Correspondence: (B.D.); (P.A.); Tel.: +91-0522-2890730 (P.A.)
| | - Andleeb Khan
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, Jazan University, Jazan 45142, Saudi Arabia;
| | - Salman H. Alrokayan
- Department of Biochemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (S.H.A.); (H.A.K.)
| | - Haseeb A. Khan
- Department of Biochemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (S.H.A.); (H.A.K.)
| | - Parvaiz Ahmad
- Botany and Microbiology Department, College of Science, King Saudi University, Riyadh 11451, Saudi Arabia
- Correspondence: (B.D.); (P.A.); Tel.: +91-0522-2890730 (P.A.)
| |
Collapse
|
12
|
Zeng A, Yang R, Yu S, Zhao W. A novel hypoglycemic agent: polysaccharides from laver (Porphyra spp.). Food Funct 2020; 11:9048-9056. [DOI: 10.1039/d0fo01195a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The laver crude polysaccharides were extracted, purified, and subsequently degraded using H2O2. One low-molecular-weight polysaccharide PD-1 showing the highest inhibition activity against α-amylase might be used as a novel agent for T2DM management.
Collapse
Affiliation(s)
- Aoqiong Zeng
- State Key Laboratory of Food Science and Technology
- School of Food Science and Technology
- Jiangnan University
- Wuxi
- P.R. China
| | - Ruijin Yang
- State Key Laboratory of Food Science and Technology
- School of Food Science and Technology
- Jiangnan University
- Wuxi
- P.R. China
| | - Shuhuai Yu
- State Key Laboratory of Food Science and Technology
- School of Food Science and Technology
- Jiangnan University
- Wuxi
- P.R. China
| | - Wei Zhao
- State Key Laboratory of Food Science and Technology
- School of Food Science and Technology
- Jiangnan University
- Wuxi
- P.R. China
| |
Collapse
|
13
|
Shoaib A, Badruddeen, Dixit RK, Ganash M, Barreto G, Ashraf GM, Siddiqui HH. Beneficial effects of n-hexane bark extract of Onosma echioides L. on diabetic peripheral neuropathy. J Cell Biochem 2019; 120:16524-16532. [PMID: 31099436 DOI: 10.1002/jcb.28912] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 02/26/2019] [Accepted: 02/28/2019] [Indexed: 11/05/2022]
Abstract
Onosma echioides Linn (Boraginaceae) is the most frequently used curative herb widely used for kidney obstruction, sciatic pain, and gout. The present study was designed to investigate the therapeutic effects of n-hexane bark extract of O. echioides (OE) L. root in vivo against Streptozotocin-induced diabetic neuropathy in SD rats. For in vivo activity, the experiment was categorized into five different groups (n = 5). Group-I was considered as nondiabetic/normal control (NC) treated with 0.5% carboxymethyl cellulose (CMC), Group II as diabetic control, Group-III, IV, and V served as diabetic treated with OE 50, OE 100, and pregabalin at a dose of 50, 100, and 10 mg/kg body weight, orally, respectively. Body weight, blood glucose, oral glucose tolerance test, behavioral studies (motor coordination test, thermal hyperalgesia, cold allodynia, locomotor activity, oxidative biomarkers (thio barbituric acid reactive substances [TBARS], superoxide dismutase [SOD], glutathione [GSH], and catalase), and histopathology of the sciatic nerve were performed. Treatment with OE showed a dose-dependent increase in neuroprotective activity by improving the myelination and decreasing the axonal swelling of nerve fibers. The verdicts of behavioral activities showed a remarkable effect on animals after the treatment of extract and standard drug pregabalin. In conclusion, our findings supported the traditional application of OE and explored its importance in the management of diabetic neuropathy. Additional clinical experiments may provide novel therapeutic drugs for diabetes and its complications.
Collapse
Affiliation(s)
- Ambreen Shoaib
- Department of Pharmacology, Faculty of Pharmacy, Integral University, Lucknow, India
| | - Badruddeen
- Department of Pharmacology, Faculty of Pharmacy, Integral University, Lucknow, India
| | - Rakesh Kumar Dixit
- Department of Pharmacology, King George Medical University, Lucknow, Uttar Pradesh, India
| | - Magdah Ganash
- Department of Biology, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - George Barreto
- Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá D.C, Colombia.,Instituto de Ciencias Biomédicas, Universidad Autónoma de Chile, Santiago, Chile
| | - Ghulam Md Ashraf
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia.,Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | | |
Collapse
|
14
|
Sun XM, Ye HQ, Liu JB, Wu L, Lin DB, Yu YL, Gao F. Assessment of anti-diabetic activity of peanut shell polyphenol extracts. J Zhejiang Univ Sci B 2019; 19:764-775. [PMID: 30269444 DOI: 10.1631/jzus.b1700401] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The present study aimed to evaluate the anti-diabetic property of peanut shell polyphenol extracts (PSPEs). Diabetic rats were oral-administrated with PSPE at doses of 50, 100, and 200 mg/kg body weight (BW) per day for 28 consecutive days, with metformin (Met) as a positive control. The results showed that, similar to the Met treatment, administration of PSPE caused significant decreases in food intake, water intake, fasting blood glucose, total cholesterol, triglyceride, low-density lipoprotein cholesterol, and methane dicarboxylic aldehyde in serum, and significant increases in BW, insulin level, high-density lipoprotein cholesterol, superoxide dismutase, glutathione, and liver glycogen. Further, glucose tolerance was markedly improved in the PSPE-treated diabetic groups. Histopathological results showed that PSPE improved cellular structural and pathological changes in liver, kidney, and pancreatic islets. Collectively, the results indicated that the hypoglycemic effects of PSPE on high-fat diet/streptozotocin (HFD/STZ)-induced diabetes are comparable to Met, though their exact mechanism actions are still under investigation. Therefore, the current study suggests that PSPE could be a potential health-care food supplement in the management of diabetes.
Collapse
Affiliation(s)
- Xiao-Meng Sun
- Department of Food Science and Engineering, College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Hai-Qing Ye
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Jing-Bo Liu
- Department of Food Science and Engineering, College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Lei Wu
- Department of Nutritional Sciences, Oklahoma State University, Stillwater 74078, USA
| | - Ding-Bo Lin
- Department of Nutritional Sciences, Oklahoma State University, Stillwater 74078, USA
| | - Ya-Li Yu
- Department of Food Science and Engineering, College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Feng Gao
- Department of Food Science and Engineering, College of Food Science and Engineering, Jilin University, Changchun 130062, China
| |
Collapse
|
15
|
Dewanjee S, Das S, Das AK, Bhattacharjee N, Dihingia A, Dua TK, Kalita J, Manna P. Molecular mechanism of diabetic neuropathy and its pharmacotherapeutic targets. Eur J Pharmacol 2018; 833:472-523. [DOI: 10.1016/j.ejphar.2018.06.034] [Citation(s) in RCA: 117] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 06/15/2018] [Accepted: 06/26/2018] [Indexed: 02/07/2023]
|
16
|
Shokrzadeh M, Mirshafa A, Yekta Moghaddam N, Birjandian B, Shaki F. Mitochondrial dysfunction contribute to diabetic neurotoxicity induced by streptozocin in mice: protective effect of Urtica dioica and pioglitazone. Toxicol Mech Methods 2018; 28:499-506. [PMID: 29606029 DOI: 10.1080/15376516.2018.1459993] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
INTRODUCTION Uncontrolled chronic hyperglycemia in diabetic patients could result in various complications, including neurotoxicity. Urtica dioica L. (UD) is known for its hypoglycemic and antioxidant effects. In this study, we evaluated the efficacy of UD and pioglitazone (PIO) in reduction of neurotoxicity and oxidative stress in streptozocin-induced diabetic mice. MATERIALS AND METHODS Male mice were divided into seven groups: control, diabetic, dimethyl sulfoxide-treated control, PIO-treated, UD-treated, UD-PIO-treated, and vitamin E-treated. For induction of diabetes, streptozocin was injected in a single dose (65 mg/kg, i.p.). All treatments were performed for 5 weeks. Neurotoxicity was evaluated through hot plate and formalin test. Then, animals were killed, brain tissue was separated and the mitochondrial fraction was isolated with different centrifuge technique. Also, oxidative stress markers (reactive oxygen species, lipid peroxidation, protein carbonyl, glutathione) were measured in brain. Mitochondrial function was evaluated by MTT test in brain isolated mitochondria. RESULTS Elevation of oxidative stress markers and mitochondrial damage were observed in diabetic mice compared to control group. Administration of PIO and UD ameliorated the oxidative stress and mitochondrial damage (p < 0.05) in diabetic mice. Also increase in pain score was shown in diabetic mice that treatment with UD and PIO diminished elevation of pain score in diabetic mice. Interestingly, simultaneous administration of PIO and UD showed synergism effect in attenuation of oxidative stress and hyperglycemia. CONCLUSION UD showed a therapeutic potential for the attenuation of oxidative stress and diabetes-induced hyperglycemia that can be considered as co-treatment in treatment of diabetic neurotoxicity.
Collapse
Affiliation(s)
- Mohammad Shokrzadeh
- a Pharmaceutical Sciences Research Center, Faculty of Pharmacy , Mazandaran University of Medical Sciences , Sari , Iran.,b Department of Toxicology and Pharmacology, Faculty of Pharmacy , Mazandaran University of Medical Sciences , Sari , Iran
| | - Atefeh Mirshafa
- b Department of Toxicology and Pharmacology, Faculty of Pharmacy , Mazandaran University of Medical Sciences , Sari , Iran.,c Student Research Committee , Mazandaran University of Medical Sciences , Sari , Iran
| | - Niusha Yekta Moghaddam
- b Department of Toxicology and Pharmacology, Faculty of Pharmacy , Mazandaran University of Medical Sciences , Sari , Iran.,c Student Research Committee , Mazandaran University of Medical Sciences , Sari , Iran
| | - Behnoosh Birjandian
- b Department of Toxicology and Pharmacology, Faculty of Pharmacy , Mazandaran University of Medical Sciences , Sari , Iran.,c Student Research Committee , Mazandaran University of Medical Sciences , Sari , Iran
| | - Fatemeh Shaki
- a Pharmaceutical Sciences Research Center, Faculty of Pharmacy , Mazandaran University of Medical Sciences , Sari , Iran.,b Department of Toxicology and Pharmacology, Faculty of Pharmacy , Mazandaran University of Medical Sciences , Sari , Iran
| |
Collapse
|
17
|
Tanshinone IIA Attenuates Diabetic Peripheral Neuropathic Pain in Experimental Rats via Inhibiting Inflammation. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 2018:2789847. [PMID: 29713362 PMCID: PMC5866893 DOI: 10.1155/2018/2789847] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 01/01/2018] [Indexed: 12/17/2022]
Abstract
Diabetic peripheral neuropathic pain (DPNP) is a common and intractable complication of diabetes. Conventional therapies are always not ideal; development of novel drugs is still needed to achieve better pain relief. Recent evidences have demonstrated that inflammation is involved in the onset and maintenance of DPNP. The anti-inflammatory property of Tanshinone IIA (TIIA) makes it a promising candidate to block or alter the pain perception. This study was conducted to investigate whether TIIA could attenuate DPNP in streptozotocin- (STZ-) induced rats model and its potential mechanisms. TIIA was administered to STZ-induced diabetic rats at the dose of 40 mg/kg once a day for 3 weeks. The effects of TIIA on thermal hyperalgesia and mechanical allodynia were investigated using behavioral tests. The mRNA level and expression of interleukin- (IL-) 1β, interleukin- (IL-) 6, tumor necrosis factor- (TNF-) α, and interleukin- (IL-) 10 in the fourth to sixth segments of the dorsal root ganglion (L4–6 DRG) were detected by quantitative real-time PCR (qPCR) and Western blot. TIIA treatment significantly attenuated mechanical allodynia and thermal hyperalgesia in diabetic rats. In addition, the expression of the proinflammatory cytokines IL-1β, IL-6, and TNF-α was inhibited, and the level of the anti-inflammatory cytokine IL-10 was increased by TIIA. This study demonstrated that TIIA has significant antiallodynic and antihyperalgesic effects in a rat model of STZ-induced DPNP, and the effect may be associated with its anti-inflammation property.
Collapse
|
18
|
Ma CT, Chyau CC, Hsu CC, Kuo SM, Chuang CW, Lin HH, Chen JH. Pepino polyphenolic extract improved oxidative, inflammatory and glycative stress in the sciatic nerves of diabetic mice. Food Funct 2016; 7:1111-21. [PMID: 26791916 DOI: 10.1039/c5fo01358e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The effect of pepino polyphenolic extract (PPE) on diabetic neuropathy was examined. Using HPLC/ESI-MS-MS analysis, PPE was demonstrated to contain coumaroyl and caffeoyl derivatives among polyphenols. PPE at 0.5 or 1% was supplied to diabetic mice for 12 weeks. The PPE intake at two doses significantly improved glycaemic control. These treatments reserved the glutathione (GSH) level, and decreased the thiobarbituric acid reactive substances (TBARS) level, reactive oxygen species (ROS), interleukin (IL)-6, tumour necrosis factor (TNF)-alpha, fructose, and glycation intermediates and precursors of advanced glycation end products (AGEs), such as methylglyoxal (MG) and N-(carboxymethyl)lysine (CML), in the sciatic nerves of diabetic mice. In a histological study of sciatic nerves, PPE had the effects in improving the nerves of diabetic mice, showing disorganization of the fascicle with numerous small myelinated fibers. The PPE intake at two doses retained the activity, and the protein and mRNA levels of glutathione peroxidase (GPX), and decreased protein expressions of aldose reductase (AR) and the receptor for the advanced glycation end product (RAGE) in sciatic nerves. These findings support that pepino polyphenolic extract could attenuate oxidative, inflammatory and glycative stress in diabetic peripheral nerves.
Collapse
Affiliation(s)
- Chin-Tsu Ma
- Department of Electric Engineering, I-Shou University, Kaohsiung City, Taiwan and Department of Biomedical Engineering, I-Shou University, Kaohsiung City, Taiwan
| | - Charng-Cherng Chyau
- Research Institute of Biotechnology, Hung Kuang University, Taichung City, Taiwan
| | - Cheng-Chin Hsu
- Department of Nutrition, Chung Shan Medical University, Taichung City, Taiwan
| | - Shyh-Ming Kuo
- Department of Biomedical Engineering, I-Shou University, Kaohsiung City, Taiwan
| | - Chin-Wen Chuang
- Department of Electric Engineering, I-Shou University, Kaohsiung City, Taiwan
| | - Hui-Hsuan Lin
- Department of Medical Laboratory and Biotechnology, Chung Shan Medical University, Taichung City, Taiwan and Clinical Laboratory, Chung Shan Medical University Hospital, Taichung City, Taiwan.
| | - Jing-Hsien Chen
- Department of Nutrition, Chung Shan Medical University, Taichung City, Taiwan and Clinical Laboratory, Chung Shan Medical University Hospital, Taichung City, Taiwan.
| |
Collapse
|
19
|
Bilir B, Tulubas F, Bilir BE, Atile NS, Kara SP, Yildirim T, Gumustas SA, Topcu B, Kaymaz O, Aydin M. The association of vitamin D with inflammatory cytokines in diabetic peripheral neuropathy. J Phys Ther Sci 2016; 28:2159-63. [PMID: 27512288 PMCID: PMC4968528 DOI: 10.1589/jpts.28.2159] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 04/07/2016] [Indexed: 11/24/2022] Open
Abstract
[Purpose] The effects of vitamin D on the circulating levels of IL-17 and IL-13 were investigated in patients with diabetic peripheral neuropathy, patients with diabetes mellitus type 2 without neuropathy, and healthy controls. [Subjects and Methods] A single-blind controlled clinical study was performed, including70 type 2 diabetic patients with or without diabetic peripheral neuropathy and 33 healthy volunteer controls. The 25(OH)D levels were evaluated using ultra-performance liquid chromatography, and IL-17 and IL-13 levels were assessed using enzyme-linked immunosorbent assays. [Results] The 25(OH) vitamin D concentration was lower in diabetic peripheral neuropathy patients than in diabetes mellitus patients without neuropathy and healthy controls. Similarly, 25(OH)D levels were lower in diabetes mellitus patients than healthy controls. IL-17 and IL-13 levels were higher in diabetes mellitus patients than in controls. Additionally, IL-13 levels were higher in diabetic peripheral neuropathy patients than in diabetes mellitus patients without neuropathy. These differences were statistically significant. There was a significant positive correlation between 25(OH)D and IL-13,and a negative correlation between 25(OH)D andIL-17 in the diabetic and diabetic neuropathy groups. [Conclusion] Vitamin D is a potential modifiable risk factor for diabetic peripheral neuropathy and may regulate inflammatory mediators, e.g., IL-17 and IL-13.
Collapse
Affiliation(s)
- Bulent Bilir
- Department of Internal Medicine, Namik Kemal University
School of Medicine, Turkey
| | - Feti Tulubas
- Department of Biochemistry, Namik Kemal University School
of Medicine, Turkey
| | - Betul Ekiz Bilir
- Clinic of Endocrinology, Republic of Turkey Ministry of
Health, State Hospital, Turkey
| | - Neslihan Soysal Atile
- Clinic of Endocrinology, Republic of Turkey Ministry of
Health, State Hospital, Turkey
| | - Sonat Pinar Kara
- Department of Internal Medicine, Namik Kemal University
School of Medicine, Turkey
| | - Tulay Yildirim
- Department of Physical Medicine and Rehabilitation, Namik
Kemal University School of Medicine, Turkey
| | - Seyit Ali Gumustas
- Department of Orthopaedic and Traumatology, Republic of
Turkey Ministry of Health General Secretariat of the Public Hospitals Union, Turkey
| | - Birol Topcu
- Department of Biostatistics Tekirdag, Namik Kemal
University School of Medicine, Turkey
| | - Ozlem Kaymaz
- Department of Biochemistry, Namik Kemal University School
of Medicine, Turkey
| | - Murat Aydin
- Department of Biochemistry, Namik Kemal University School
of Medicine, Turkey
| |
Collapse
|
20
|
Vashistha B, Sharma A, Jain V. Ameliorative potential of ferulic acid in vincristine-induced painful neuropathy in rats: An evidence of behavioral and biochemical examination. Nutr Neurosci 2016; 20:60-70. [PMID: 25494651 DOI: 10.1179/1476830514y.0000000165] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The present study was designed to investigate the effect of ferulic acid (FA) in vincristine-induced neuropathic pain in rats. Vincristine (50 µg/kg, i.p. for 10 consecutive days) was administered to induce painful neuropathy in rats. Various pain sensitive tests, viz., pinprick, hot plate, paint-brush, and acetone test were performed on different days (1, 6, 14, and 21) to assess the degree of mechanical hyperalgesia, heat hyperalgesia, mechanical dynamic allodynia, and cold allodynia, respectively. The electrophysiological and histopathological evaluations were also investigated. The tissue thiobarbituric acid reactive species (TBARS), reduced glutathione (GSH), myeloperoxidase (MPO), tumor necrosis factor-alpha (TNF-alpha), interleukin-6 (IL-6), interleukin-10 (IL-10), and total calcium were measured as the markers of inflammation and oxidative stress. FA (50 and 100 mg/kg, i.p.) and gabapentin (10 mg/kg, p.o.) were administered for 11 days. Administration of FA attenuated the vincristine-induced behavioral alteration along with electrophysiological and histopathological changes significantly (P < 0.05). FA also attenuated the vincristine-induced oxidative stress (TBARS, GSH, and total calcium levels) and inflammation (MPO, TNF-alpha, IL-6, and IL-10). It may be concluded that FA has ameliorative potential in mitigation of the painful states associated with vincristine-induced painful neuropathy that may further be attributed to anti-inflammatory actions with subsequent reduction in oxidative stress.
Collapse
Affiliation(s)
- Bharat Vashistha
- a Department of Pharmacology , Gyan Vihar School of Pharmacy, Suresh Gyan Vihar University , Jaipur , Rajasthan , India
| | - Abhisheak Sharma
- b Department of Dravyaguna Vigyan , National Institute of Ayurveda , Jaipur , Rajasthan , India
| | - Vivek Jain
- c Department of Pharmacy , Banasthali University , Banasthali , Rajasthan , India
| |
Collapse
|
21
|
Raposo D, Morgado C, Pereira-Terra P, Tavares I. Nociceptive spinal cord neurons of laminae I-III exhibit oxidative stress damage during diabetic neuropathy which is prevented by early antioxidant treatment with epigallocatechin-gallate (EGCG). Brain Res Bull 2014; 110:68-75. [PMID: 25522867 DOI: 10.1016/j.brainresbull.2014.12.004] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Revised: 12/05/2014] [Accepted: 12/08/2014] [Indexed: 12/20/2022]
Abstract
Spinal cord neurons located in laminae I-III respond to nociceptive stimuli and participate in the transmission of painful information to the brain. In the present study we evaluated if nociceptive laminae I-III neurons are affected by oxidative stress damage in a model of diabetic neuropathic pain (DNP), the streptozotocin-induced diabetic rat (STZ rat). Additionally, we evaluated the effects of a preventive antioxidant treatment with epigallocatechin-gallate (EGCG) in nociceptive neuronal activation and behavioural signs of DNP. Three days after diabetes induction, a treatment protocol of STZ rats with an aqueous solution of EGCG in the drinking water was initiated. Ten weeks after the onset of treatment, the spinal cords were immunoreacted against validated markers of oxidative stress damage (8-hydroxy-2'-deoxyguanosine; 8-OHdG) and of nociceptive neuronal activation (Fos). Mechanical hypersensitivity was assessed before and after EGCG treatment. Untreated STZ rats presented increased levels of 8-OHdG immunoreaction, higher numbers of Fos-immunoreacted neurons and high levels of co-localization of 8-OHdG and Fos in laminae I-III. Treatment with EGCG normalized the increase of the above mentioned parameters and ameliorated mechanical hypersensitivity. The present study shows that nociceptive neurons in spinal cord laminae I-III exhibit oxidative stress damage during diabetic neuropathy, which probably affects ascending pain transmission during DNP. The neurobiological mechanisms and translational perspectives of the beneficial effects of a preventive and sustained EGCG treatment in DNP need to be evaluated in the future.
Collapse
Affiliation(s)
- D Raposo
- Department of Experimental Biology, Faculty of Medicine, University of Porto, Portugal; IBMC, University of Porto, Portugal
| | - C Morgado
- Department of Experimental Biology, Faculty of Medicine, University of Porto, Portugal; IBMC, University of Porto, Portugal
| | - P Pereira-Terra
- Department of Experimental Biology, Faculty of Medicine, University of Porto, Portugal; IBMC, University of Porto, Portugal
| | - I Tavares
- Department of Experimental Biology, Faculty of Medicine, University of Porto, Portugal; IBMC, University of Porto, Portugal.
| |
Collapse
|
22
|
Abstract
Neuropathy is the most common complication of diabetes. As a consequence of longstanding hyperglycemia, a downstream metabolic cascade leads to peripheral nerve injury through an increased flux of the polyol pathway, enhanced advanced glycation end‐products formation, excessive release of cytokines, activation of protein kinase C and exaggerated oxidative stress, as well as other confounding factors. Although these metabolic aberrations are deemed as the main stream for the pathogenesis of diabetic microvascular complications, organ‐specific histological and biochemical characteristics constitute distinct mechanistic processes of neuropathy different from retinopathy or nephropathy. Extremely long axons originating in the small neuronal body are vulnerable on the most distal side as a result of malnutritional axonal support or environmental insults. Sparse vascular supply with impaired autoregulation is likely to cause hypoxic damage in the nerve. Such dual influences exerted by long‐term hyperglycemia are critical for peripheral nerve damage, resulting in distal‐predominant nerve fiber degeneration. More recently, cellular factors derived from the bone marrow also appear to have a strong impact on the development of peripheral nerve pathology. As evident from such complicated processes, inhibition of single metabolic factors might not be sufficient for the treatment of neuropathy, but a combination of several inhibitors might be a promising approach to overcome this serious disorder. (J Diabetes Invest, doi: 10.1111/j.2040‐1124.2010.00070.x, 2010)
Collapse
Affiliation(s)
| | | | - Kazuhiro Sugimoto
- Laboratory Medicine, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| |
Collapse
|
23
|
Stanley JA, Sivakumar KK, Arosh JA, Burghardt RC, Banu SK. Edaravone mitigates hexavalent chromium-induced oxidative stress and depletion of antioxidant enzymes while estrogen restores antioxidant enzymes in the rat ovary in F1 offspring. Biol Reprod 2014; 91:12. [PMID: 24804965 PMCID: PMC4434959 DOI: 10.1095/biolreprod.113.113332] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Environmental contamination of drinking water with chromium (Cr) has been increasing in more than 30 cities in the United States. Previous studies from our group have shown that Cr affects reproductive functions in female Sprague Dawley rats. Although it is impossible to completely remove Cr from the drinking water, it is imperative to develop effective intervention strategies to inhibit Cr-induced deleterious health effects. Edaravone (EDA), a potential inhibitor of free radicals, has been clinically used to treat cancer and cardiac ischemia. This study evaluated the efficacy of EDA against Cr-induced ovarian toxicity. Results showed that maternal exposure to CrVI in rats increased follicular atresia, decreased steroidogenesis, and delayed puberty in F1 offspring. CrVI increased oxidative stress and decreased antioxidant (AOX) enzyme levels in the ovary. CrVI increased follicle atresia by increased expression of cleaved caspase 3, and decreased expression of Bcl2 and Bcl2l1 in the ovary. EDA mitigated or inhibited the effects of CrVI on follicle atresia, pubertal onset, steroid hormone levels, and AOX enzyme activity, as well as the expression of Bcl2 and Bcl2l1 in the ovary. In a second study, CrVI treatment was withdrawn, and F1 rats were injected with estradiol (E₂) (10 μg in PBS/ethanol per 100 g body weight) for a period of 2 wk to evaluate whether E₂ treatment will restore Cr-induced depletion of AOX enzymes. E₂ restored CrVI-induced depletion of glutathione peroxidase 1, catalase, thioredoxin 2, and peroxiredoxin 3 in the ovary. This is the first study to demonstrate the protective effects of EDA against any toxicant in the ovary.
Collapse
Affiliation(s)
- Jone A Stanley
- Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas
| | - Kirthiram K Sivakumar
- Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas
| | - Joe A Arosh
- Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas
| | - Robert C Burghardt
- Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas
| | - Sakhila K Banu
- Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas
| |
Collapse
|
24
|
Min SW, Han JS. Effect of Polyopes lancifolia Extract on Oxidative Stress in Human Umbilical Vein Endothelial Cells Induced by High Glucose. Prev Nutr Food Sci 2014; 18:38-44. [PMID: 24471108 PMCID: PMC3867157 DOI: 10.3746/pnf.2013.18.1.038] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Accepted: 02/01/2013] [Indexed: 02/02/2023] Open
Abstract
The protective effect of Polyopes lancifolia extract on high glucose-induced oxidative stress was investigated using human umbilical vein endothelial cells (HUVECs). High concentration of glucose (30 mM) treatment induced HUVECs cell death, but Polyopes lancifolia extract, at concentrations of 25, 50, and 100 μg/mL, protected cells from high glucose-induced damage. Furthermore, thiobarbituric acid reactive substances, intracellular reactive oxygen species, and nitric oxide levels increased by high glucose treatment were effectively decreased by treatment with Polyopes lancifolia extract in a dose-dependent manner. Also, Polyopes lancifolia extract treatment reduced the overexpressions of inducible nitric oxide synthase, cyclooxygenase-2, and nuclear factor-kappa B proteins activation that was induced by high glucose in HUVECs. These results indicate that Polyopes lancifolia extract is a potential therapeutic material that will reduce the damage caused by high glucose-induced-oxidative stress associated with diabetes.
Collapse
Affiliation(s)
- Seong Won Min
- Department of Food Science and Nutrition, Pusan National University, Busan 609-735, Korea
| | - Ji Sook Han
- Department of Food Science and Nutrition, Pusan National University, Busan 609-735, Korea
| |
Collapse
|
25
|
Han J, Tan P, Li Z, Wu Y, Li C, Wang Y, Wang B, Zhao S, Liu Y. Fuzi attenuates diabetic neuropathy in rats and protects schwann cells from apoptosis induced by high glucose. PLoS One 2014; 9:e86539. [PMID: 24466139 PMCID: PMC3900563 DOI: 10.1371/journal.pone.0086539] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Accepted: 12/15/2013] [Indexed: 02/04/2023] Open
Abstract
Radix aconite lateralis preparata (Fuzi), a folk medicine, has long been used for the treatment of diabetes and paralysis in China. We examined the effect of Fuzi alone on diabetic rats and Schwann cells in high glucose and the components responsible for its activity. The major constituents of FZE were identified by HPLC-MS/MS data. Male Sprague Dawley rats (n = 36) were randomly divided into control, diabetic, FZE 1.75 g/kg, FZE 3.50 g/kg, FZE 7.00 g/kg, and methylcobalamin groups. After two weeks treatment, nerve conduction velocity and paw withdrawal latency were measured. In vitro, the Schwann cells were grouped according to exposure: normal glucose (NG), normal glucose plus mannitol (NG+M), high glucose (HG), and HG plus different concentrations of FZE (0.1 µg/ml, 1.0 µg/ml, and 10.0 µg/ml). Oxygen free radicals and apoptosis were evaluated through DCFH2DA, DHE and annexin-PE/7-AAD assay, respectively. Apoptosis factors (Bax, Bcl-2, CytoC, caspase-3, and caspase-9) were analyzed using immunofluorescence. Nine alkaloids were identified. The results from animal model showed that FZE was effective in accelerating nerve conduction velocity and shortening paw withdrawal latency in diabetic rats. And in vitro, FZE was also found to protect Schwann cells against high glucose injury. FZE could significantly decrease the apoptotic ratio, superoxide anion and peroxide level. Furthermore, the apoptosis factors, including Bax, Bcl-2, CytoC, caspase-3, and caspase-9 were ameliorated in FZE treated groups. The HPLC-MSn method is simple and suitable for the identification of alkaloids in Fuzi. FZE has a protective effect in diabetic neuropathic rats, which is probably achieved by the antiapoptotic effect of FZE on Schwann cells. Apoptosis factor data imply that FZE protected Schwann cells through the mitochondria pathway. Alkaloids are major components contributing to the protective effect.
Collapse
Affiliation(s)
- Jing Han
- Beijing University of Chinese Medicine, Beijing, China
| | - Peng Tan
- Beijing University of Chinese Medicine, Beijing, China
| | - Zhiyong Li
- Minzu University of China, Beijing, China
| | - Yan Wu
- Beijing University of Chinese Medicine, Beijing, China
| | - Chun Li
- Beijing University of Chinese Medicine, Beijing, China
| | - Yong Wang
- Beijing University of Chinese Medicine, Beijing, China
| | - Beibei Wang
- Beijing University of Chinese Medicine, Beijing, China
| | - Shuang Zhao
- Beijing University of Chinese Medicine, Beijing, China
| | - Yonggang Liu
- Beijing University of Chinese Medicine, Beijing, China
- * E-mail:
| |
Collapse
|
26
|
Lipinski B, Pretorius E. The role of iron-induced fibrin in the pathogenesis of Alzheimer's disease and the protective role of magnesium. Front Hum Neurosci 2013; 7:735. [PMID: 24194714 PMCID: PMC3810650 DOI: 10.3389/fnhum.2013.00735] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Accepted: 10/14/2013] [Indexed: 12/14/2022] Open
Abstract
Amyloid hypothesis of Alzheimer's disease (AD) has recently been challenged by the increasing evidence for the role of vascular and hemostatic components that impair oxygen delivery to the brain. One such component is fibrin clots, which, when they become resistant to thrombolysis, can cause chronic inflammation. It is not known, however, why some cerebral thrombi are resistant to the fibrinolytic degradation, whereas fibrin clots formed at the site of vessel wall injuries are completely, although gradually, removed to ensure proper wound healing. This phenomenon can now be explained in terms of the iron-induced free radicals that generate fibrin-like polymers remarkably resistant to the proteolytic degradation. It should be noted that similar insoluble deposits are present in AD brains in the form of aggregates with Abeta peptides that are resistant to fibrinolytic degradation. In addition, iron-induced fibrin fibers can irreversibly trap red blood cells (RBCs) and in this way obstruct oxygen delivery to the brain and induce chronic hypoxia that may contribute to AD. The RBC-fibrin aggregates can be disaggregated by magnesium ions and can also be prevented by certain polyphenols that are known to have beneficial effects in AD. In conclusion, we argue that AD can be prevented by: (1) limiting the dietary supply of trivalent iron contained in red and processed meat; (2) increasing the intake of chlorophyll-derived magnesium; and (3) consumption of foods rich in polyphenolic substances and certain aliphatic and aromatic unsaturated compounds. These dietary components are present in the Mediterranean diet known to be associated with the lower incidence of AD and other degenerative diseases.
Collapse
|
27
|
Abstract
New azo- and bisazo-5-pyrazolone dyes have been synthesised by azo coupling of various arylamines and aryl diamines with 5-pyrazolones: 1-methyl-3-phenyl-1 H-pyrazol-5(4 H)-one, 1-(4-chlorophenyl)-3-isopropyl-1 H-pyrazol-5(4 H)-one and 3-isopropyl-1-(4-methoxyphenyl)-1 H-pyrazol-5(4 H)-one, respectively. All new synthesised dyes have been characterised by FTIR, 1H, 13C NMR and UV-Vis spectral studies with GC/MS and LC/MS analyses. FTIR and 1H NMR studies confirmed the existence of azo- and hydrazo-tautomeric forms of the dyes in the solid and liquid states, respectively.
Collapse
Affiliation(s)
- Omer Tahir Gunkara
- Yildiz Technical University, Faculty of Science and Arts, Davutpasa Campus, 34220, Esenler-Istanbul, Turkey
| | - Emine Bagdatli
- Ordu University, Faculty of Science and Arts, Department of Chemistry, Cumhuriyet Campus, 52200, Ordu, Turkey
| | - Nuket Ocal
- Yildiz Technical University, Faculty of Science and Arts, Davutpasa Campus, 34220, Esenler-Istanbul, Turkey
| |
Collapse
|
28
|
Pérez-González A, Galano A. On the hydroperoxyl radical scavenging activity of two Edaravone derivatives: mechanism and kinetics. J PHYS ORG CHEM 2013. [DOI: 10.1002/poc.3082] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Adriana Pérez-González
- Departamento de Quimica, Division de Ciencias Basicas e Ingenieria; Universidad Autonoma Metropolitana-Iztapalapa; Av. San Rafael Atlixco No.186, Col. Vicentina; CP 09340; Mexico; D.F.; Mexico
| | - Annia Galano
- Departamento de Quimica, Division de Ciencias Basicas e Ingenieria; Universidad Autonoma Metropolitana-Iztapalapa; Av. San Rafael Atlixco No.186, Col. Vicentina; CP 09340; Mexico; D.F.; Mexico
| |
Collapse
|
29
|
Shen YE, Wang Y, Yu GC, Liu C, Zhang ZY, Zhang LM. Effects of edaravone on amyloid-β precursor protein processing in SY5Y-APP695 cells. Neurotox Res 2013; 24:139-47. [PMID: 23325603 DOI: 10.1007/s12640-012-9370-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Revised: 12/18/2012] [Accepted: 12/21/2012] [Indexed: 01/09/2023]
Abstract
Previous reports have revealed that reactive oxygen species (ROS) is involved in the development of Alzheimer's disease (AD), and recent studies indicate that free radical-generating systems can regulate amyloid-β precursor protein (APP) processing. Edaravone is a novel free radical scavenger currently used to reduce cerebral damages after acute cerebral infarction. In the present study, we used SH-SY5Y cells stably transfected with the human "Swedish" APP mutation APP695 (SY5Y-APP695swe) as an in vitro model to investigate the effect of edaravone on APP processing. The result showed that edaravone treatment for 24 h down-regulated β-amyloid (Aβ) production in a dose-dependent manner. Moreover, edaravone modulated APP processing by increasing α-secretase-derived APP fragments and decreasing β-secretase-derived APP fragments. In addition, the mRNA and protein levels of insulin degrading enzyme (IDE) and neprilysin (NEP), two key Aβ degrading enzymes, were not changed after edaravone administration. Taken together, our data suggested that edaravone played an important role in regulating Aβ production by enhancing the non-amyloidogenic pathway and inhibiting the amyloidogenic pathway. Thus, edaravone may be potentially useful for treating Alzheimer's disease (AD).
Collapse
Affiliation(s)
- Yue-E Shen
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, 23 You Zheng Steet, Nan Gang District, 150001 Harbin, China
| | | | | | | | | | | |
Collapse
|
30
|
Protection of trigonelline on experimental diabetic peripheral neuropathy. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2012; 2012:164219. [PMID: 23304193 PMCID: PMC3526196 DOI: 10.1155/2012/164219] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2012] [Accepted: 11/04/2012] [Indexed: 12/22/2022]
Abstract
The mechanisms leading to diabetic peripheral neuropathy are complex and there is no effective drug to treat it. As an active component of several traditional Chinese medicines, trigonelline has beneficial effects on diabetes with hyperlipidemia. The protective effects and the mechanism of trigonelline on diabetic peripheral neuropathy were evaluated in streptozotocin- and high-carbohydrate/high-fat diet-induced diabetic rats. Rats were divided into four groups at the end of week 2: control, diabetes, diabetes + trigonelline (40 mg/kg), and diabetes + sitagliptin (4 mg/kg). After 48-week treatment, technologies of nerve conduction, cold and hot immersion test, transmission electron microscopy, real-time PCR, and Western blotting were applied. Serum glucose, serum insulin, insulin sensitivity index, lipid parameters, body weight, sciatic nerve conduction velocity, nociception, glucagon-like peptide-1 receptor mRNA and protein, total and phosphorylated p38 mitogen-activated protein kinases protein expression, malonaldehyde content, and superoxide dismutase activity were altered in diabetic rats, and were near control levels treated with trigonelline. Slight micropathological changes existed in sciatic nerve of trigonelline-treated diabetic rats. These findings suggest that trigonelline has beneficial effects for diabetic peripheral neuropathy through glucagon-like peptide-1 receptor/p38 mitogen-activated protein kinases signaling pathway, nerve conduction velocity, antioxidant enzyme activity, improving micropathological changes of sciatic nerve and decreasing lipid peroxidation.
Collapse
|
31
|
Bagdatli E, Ocal N. Synthesis, Spectroscopic, and Dyeing Properties of New Azo and Bisazo Dyes Derived from 5-Pyrazolones. J Heterocycl Chem 2012. [DOI: 10.1002/jhet.1053] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Emine Bagdatli
- Department of Chemistry, Faculty of Art and Sciences; Ordu University; Cumhuriyet Campus; Ordu; 52200; Turkey
| | - Nuket Ocal
- Department of Chemistry, Faculty of Art and Sciences; Yildiz Technical University; Esenler-Istanbul; 34210; Turkey
| |
Collapse
|
32
|
Muthuraman A, Singh N. Neuroprotective effect of saponin rich extract of Acorus calamus L. in rat model of chronic constriction injury (CCI) of sciatic nerve-induced neuropathic pain. JOURNAL OF ETHNOPHARMACOLOGY 2012; 142:723-731. [PMID: 22706151 DOI: 10.1016/j.jep.2012.05.049] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2012] [Revised: 05/06/2012] [Accepted: 05/25/2012] [Indexed: 06/01/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Traditionally, Acorus calamus has been used for the treatment and management of headache, migraine, body ache and severe inflammatory pain in the Unani, Ayurveda and Indian system of medicine. AIM OF THE STUDY Present study focuses on the evaluation of saponin rich extract of Acorus calamus (SRE-AC) in chronic constriction injury (CCI) of sciatic nerve induced neuropathic pain and neuronal functional changes in rats. MATERIALS AND METHODS The pain sensitive tests, i.e., thermal and mechanical hyperalgesia and sciatic functional index test, were performed on the different days, i.e., days 0, 1, 7, 14, and 21. The motor and sensory nerve conduction velocity was also measured on the 21st day. Tissue total protein, superoxide anion generation, total calcium, myeloperoxidase and TNF-α levels were estimated to assess biochemical changes. Histopathological evaluations were also performed. SRE-AC (20 and 40 mg/kg) and pregabalin (10mg/kg, serving as a positive control) were administered orally for 14 consecutive days from the day of surgery. RESULTS CCI produced significant (P<0.05) increase in thermal and mechanical hyperalgesia, rise in sciatic functional index, decrease in nerve conduction velocity, along with biochemical and histopathological changes. Oral administration of SRE-AC and pregabalin significantly (P<0.05) ameliorated CCI-induced nociceptive pain threshold, sciatic functional and electrophysiological changes in a dose dependent manner. Further, tissue biochemical and histopathological changes were also attenuated. CONCLUSION SRE-AC has shown ameliorative effect in CCI-induced neuropathic pain which may be attributed to its multiple actions including anti-oxidative, anti-inflammatory and neuroprotective actions.
Collapse
Affiliation(s)
- Arunachalam Muthuraman
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala 147002, India
| | | |
Collapse
|
33
|
A hypothesis: Edaravone exert cardioprotection partly via modulation of adiponectin. Med Hypotheses 2012; 79:141-2. [DOI: 10.1016/j.mehy.2012.04.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2011] [Revised: 04/01/2012] [Accepted: 04/03/2012] [Indexed: 11/22/2022]
|
34
|
Phenotypic changes in diabetic neuropathy induced by a high-fat diet in diabetic C57BL/6 mice. EXPERIMENTAL DIABETES RESEARCH 2011; 2011:848307. [PMID: 22144990 PMCID: PMC3226416 DOI: 10.1155/2011/848307] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2011] [Revised: 08/03/2011] [Accepted: 08/25/2011] [Indexed: 01/05/2023]
Abstract
Emerging evidence suggests that dyslipidemia is an independent risk factor for diabetic neuropathy (DN) (reviewed by Vincent et al. 2009). To experimentally determine how dyslipidemia alters DN, we quantified neuropathic symptoms in diabetic mice fed a high-fat diet. Streptozotocin-induced diabetic C57BL/6 mice fed a high-fat diet developed dyslipidemia and a painful neuropathy (mechanical allodynia) instead of the insensate neuropathy (mechanical insensitivity) that normally develops in this strain. Nondiabetic mice fed a high-fat diet also developed dyslipidemia and mechanical allodynia. Thermal sensitivity was significantly reduced in diabetic compared to nondiabetic mice, but was not worsened by the high-fat diet. Moreover, diabetic mice fed a high-fat diet had significantly slower sensory and motor nerve conduction velocities compared to nondiabetic mice. Overall, dyslipidemia resulting from a high-fat diet may modify DN phenotypes and/or increase risk for developing DN. These results provide new insight as to how dyslipidemia may alter the development and phenotype of diabetic neuropathy.
Collapse
|
35
|
Srinivasan K, Sharma SS. Edaravone Offers Neuroprotection in a Diabetic Stroke Model via Inhibition of Endoplasmic Reticulum Stress. Basic Clin Pharmacol Toxicol 2011; 110:133-40. [DOI: 10.1111/j.1742-7843.2011.00763.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
|
36
|
Pérez-González A, Galano A. Ionization Energies, Proton Affinities, and pKa Values of a Large Series of Edaravone Derivatives: Implication for Their Free Radical Scavenging Activity. J Phys Chem B 2011; 115:10375-84. [DOI: 10.1021/jp2047163] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Adriana Pérez-González
- Departamento de Química, División de Ciencias Básicas e Ingeniería. Universidad Autónoma Metropolitana-Iztapalapa, Av San Rafael Atlixco No.186, Col.Vicentina C. P. 09340, México D. F
| | - Annia Galano
- Departamento de Química, División de Ciencias Básicas e Ingeniería. Universidad Autónoma Metropolitana-Iztapalapa, Av San Rafael Atlixco No.186, Col.Vicentina C. P. 09340, México D. F
| |
Collapse
|
37
|
Ohmasa F, Saito M, Tsounapi P, Dimitriadis F, Inoue S, Shomori K, Shimizu S, Kinoshita Y, Satoh K. Edaravone ameliorates diabetes-induced dysfunction of NO-induced relaxation in corpus cavernosum smooth muscle in the rat. J Sex Med 2011; 8:1638-49. [PMID: 21477013 DOI: 10.1111/j.1743-6109.2011.02238.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Diabetes mellitus (DM) represents a major risk factor for erectile dysfunction (ED). Although the etiology of diabetes-induced ED is multifactorial and still unknown, reactive oxygen species are thought to be one of the key factors. AIM The aim of this article is to investigate whether administration of edaravone, a free radical scavenger, could prevent type 1 diabetes-induced dysfunction of nitric oxide (NO)-induced relaxation in corpus cavernosum smooth muscle in the rat. METHODS Six-week-old male Wistar rats were randomly divided into three groups. One group was treated with citrate-phosphate buffer plus normal saline (group Cont), whereas in the other two groups, diabetes was induced by streptozotocin (50 mg/kg intraperitoneally [i.p.]). Subsequently, the diabetic rats were treated for 4 weeks either with edaravone (10 mg/kg/day, i.p.; group DM + E) or with normal saline (group DM). MAIN OUTCOME MEASURES Serum glucose and malondialdehyde levels as well as penile cyclic guanosine monophosphate (cGMP) concentrations were determined, and penile function was estimated by organ bath studies with norepinephrine-mediated contractions and acetylcholine-mediated relaxations. The participation mRNA levels of muscarinic M(3) receptors, neuronal nitrous oxide synthase (nNOS), endothelial NOS (eNOS) and inducible NOS (iNOS), and participation protein levels of nNOS, eNOS, phosphorylated nNOS, and phosphorylated eNOS were investigated by quantitative real-time polymerase chain reaction (PCR) and immunoblot analysis, respectively. RESULTS Treatment with edaravone prevented partially but significantly the decreased body and penile weight induced by diabetes. Treatment with edaravone significantly improved the increased diabetes-induced malondialdehyde levels, the decreased penile cGMP concentrations, the increased diabetes-induced norepinephrine-mediated contractions, and the decreased acetylcholine-mediated relaxation. Although there were no significant differences in expression levels of mRNAs in nNOS, diabetes-induced upregulation of muscarinic M(3) receptor and iNOS mRNAs as well as diabetes-induced downregulations of eNOS, phosphorylated nNOS, and phosphorylated eNOS were significantly prevented by edaravone. CONCLUSIONS Edaravone decreases the oxidative insult in the penile corpus cavernosum by ameliorating the NO-NOS system and thus preventing partially the developing ED in DM in the rat.
Collapse
Affiliation(s)
- Fumiya Ohmasa
- Division of Molecular Pharmacology, Tottori University School of Medicine, Yonago, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Pérez-González A, Galano A. OH Radical Scavenging Activity of Edaravone: Mechanism and Kinetics. J Phys Chem B 2010; 115:1306-14. [DOI: 10.1021/jp110400t] [Citation(s) in RCA: 99] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Adriana Pérez-González
- Departamento de Química, División de Ciencias Básicas e Ingeniería, Universidad Autónoma Metropolitana-Iztapalapa, Av San Rafael Atlixco No. 186, Col. Vicentina C.P.09340, México D.F
| | - Annia Galano
- Departamento de Química, División de Ciencias Básicas e Ingeniería, Universidad Autónoma Metropolitana-Iztapalapa, Av San Rafael Atlixco No. 186, Col. Vicentina C.P.09340, México D.F
| |
Collapse
|
39
|
Valsecchi AE, Franchi S, Panerai AE, Rossi A, Sacerdote P, Colleoni M. The soy isoflavone genistein reverses oxidative and inflammatory state, neuropathic pain, neurotrophic and vasculature deficits in diabetes mouse model. Eur J Pharmacol 2010; 650:694-702. [PMID: 21050844 DOI: 10.1016/j.ejphar.2010.10.060] [Citation(s) in RCA: 107] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2010] [Accepted: 10/26/2010] [Indexed: 02/07/2023]
Abstract
Treatment of diabetes complications remains a substantial challenge. The aim of this study was to explore the ability of the soy isoflavone genistein in attenuating the signs that follow diabetes onset: nociceptive hypersensitivity, oxidative and inflammatory state, nerve growth factor (NGF) decrease and vascular dysfunctions. Genistein (3 and 6 mg/kg) was administered to C57BL/6J streptozotocin diabetic mice from the 2nd till the 5th week after disease induction. The hind paw withdrawal threshold to mechanical stimulation (tactile allodynia) was evaluated by a von Frey filament. The oxidative stress was assessed measuring: reactive oxygen species by fluorimetric analysis, both the lipoperoxide content, as malondialdehyde, the antioxidant enzymatic activities spectrophotometrically and the glutathione content spectrofluorimetrically. Proinflammatory cytokines and NGF were measured in the sciatic nerve by enzyme-linked immunosorbent assay. Aortic inducible (iNOS) and endothelial nitric oxide synthase (eNOS) protein content was measured by western immunoblotting. Genistein relieved diabetic peripheral painful neuropathy, reverted the proinflammatory cytokine and reactive oxygen species overproduction, and restored the NGF content in diabetic sciatic nerve. Furthermore it restored the GSH content and the GSH and GSSG ratio, improved the antioxidant enzymes activities, decreased reactive oxygen species and lipoperoxide level in the brain and liver. Finally it restored the iNOS and eNOS content and the superoxide dismutase activity in thoracic aorta. Hyperglycaemia and weight decrease were not affected. Genistein is able to reverse a diabetes established condition of allodynia, oxidative stress and inflammation, ameliorates NGF content and the vascular dysfunction, thus suggesting its possible therapeutic use for diabetes complications.
Collapse
Affiliation(s)
- Anna Elisa Valsecchi
- Dipartimento di Farmacologia, Chemioterapia e Tossicologia medica, Università degli Studi di Milano, via Vanvitelli 32, 20129 Milano, Italy
| | | | | | | | | | | |
Collapse
|
40
|
Heo SJ, Hwang JY, Choi JI, Lee SH, Park PJ, Kang DH, Oh C, Kim DW, Han JS, Jeon YJ, Kim HJ, Choi IW. Protective effect of diphlorethohydroxycarmalol isolated from Ishige okamurae against high glucose-induced-oxidative stress in human umbilical vein endothelial cells. Food Chem Toxicol 2010; 48:1448-54. [PMID: 20176069 DOI: 10.1016/j.fct.2010.02.025] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2009] [Revised: 02/09/2010] [Accepted: 02/17/2010] [Indexed: 12/01/2022]
Abstract
In the present study, the protective effect of diphlorethohydroxycarmalol (DPHC) isolated from Ishige okamurae, a brown algae, on high glucose-induced-oxidative stress was investigated using human umbilical vein endothelial cells (HUVECs). High concentration of glucose (30 mM) treatment induced cytotoxicity whereas DPHC prevented cells from high glucose-induced damage; restoring cell viability was significantly increased. In addition, the lipid peroxidation, intracellular reactive oxygen species (ROS), and nitric oxide (NO) levels induced by high glucose treatment were effectively inhibited by addition of DPHC in a dose-dependent manner. DPHC also suppressed the over-expressions of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) proteins as well as nuclear factor-kappa B (NF-kappaB) activation induced by high glucose in HUVECs. These finding indicate that DPHC might be used as potential pharmaceutical agent which will reduce the damage caused by high glucose-induced-oxidative stress associated with diabetes.
Collapse
Affiliation(s)
- Soo-Jin Heo
- Marine Living Resources Research Department, Korea Ocean Research and Development Institute, Ansan, Republic of Korea
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
41
|
Heo SJ, Hwang JY, Choi JI, Han JS, Kim HJ, Jeon YJ. Diphlorethohydroxycarmalol isolated from Ishige okamurae, a brown algae, a potent alpha-glucosidase and alpha-amylase inhibitor, alleviates postprandial hyperglycemia in diabetic mice. Eur J Pharmacol 2009; 615:252-6. [PMID: 19482018 DOI: 10.1016/j.ejphar.2009.05.017] [Citation(s) in RCA: 161] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2008] [Revised: 05/12/2009] [Accepted: 05/19/2009] [Indexed: 10/20/2022]
Abstract
This study was designed to investigate whether diphlorethohydroxycarmalol (DPHC) may inhibit alpha-glucosidase and alpha-amylase activities, and alleviate postprandial hyperglycemia in streptozotocin-induced diabetic mice. DPHC isolated from Ishige okamurae, a brown algae, evidenced prominent inhibitory effect against alpha-glucosidase and alpha-amylase. The IC(50) values of DPHC against alpha-glucosidase and alpha-amylase were 0.16 and 0.53 mM, respectively, which evidenced the higher activities than that of acarbose. DPHC did not exert any cytotoxic effect in human umbilical vein endothelial cells (HUVECs) at various concentrations (from 0.49 to 3.91 mM). The increase of postprandial blood glucose levels were significantly suppressed in the DPHC-administered group than those in the streptozotocin-induced diabetic or normal mice. Moreover, the area under curve (AUC) was significantly reduced via DPHC administration (2022 versus 2210 mmol x min/l) in the diabetic mice as well as it delays absorption of dietary carbohydrates. Therefore, these result indicated that DPHC might be a potent inhibitor for alpha-glucosidase and alpha-amylase.
Collapse
Affiliation(s)
- Soo-Jin Heo
- Marine Living Resources Research Department, Korea Ocean Research & Development Institute, Ansan, 426-744, South Korea
| | | | | | | | | | | |
Collapse
|
42
|
Sameni HR, Panahi M, Sarkaki A, Saki GH, Makvandi M. The neuroprotective effects of progesterone on experimental diabetic neuropathy in rats. Pak J Biol Sci 2009; 11:1994-2000. [PMID: 19266905 DOI: 10.3923/pjbs.2008.1994.2000] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
This study was conducted to investigate the neuroprotective effects of progesterone (PROG) on electrophysiological and histomorphometrical alternation in STZ-induced diabetic neuropathy starting from 4 weeks after the diabetic induction. Thirty adult male Sprague-Dawley rats were randomly divided into 3 groups (with 10 rats in each), control (nondiabetic), untreated diabetic and diabetic PROG-treated. Diabetes was induced in adult male rats by a single dose injection of streptozotocin (STZ, 55 mg kg(-1), i.p.). In the PROG-treated group, 4 weeks after induce of diabetes; rats were treated with PROG (8 mg kg(-1), i.p., every two days) for 6 weeks. Diabetic rats showed a significant reduction in motor nerve conduction velocity (MNCV), mean myelinated fibers (MFs) diameter, axon diameter and myelin sheath thickness in the sciatic nerve after 6 weeks. In the untreated diabetic group endoneurial edema was observed in sciatic nerve and the numbers of MFs with infolding into the axoplasm, irregularity of fibers, myelin sheath with unclear boundaries and alteration in myelin compaction were also increased. Long-term treatment with PROG increased MNCV significantly and prevented all these abnormalities in treated diabetic rats. Our findings indicated that PROG as a therapeutic approach can protect neurophysiologic and histomorphologic alterations induced by peripheral diabetic neuropathy.
Collapse
Affiliation(s)
- H R Sameni
- Department of Anatomical Sciences, Faculty of Medical Sciences, Ahwaz Jondishapur University of Medical Sciences, Iran
| | | | | | | | | |
Collapse
|
43
|
Sharma SS, Kumar A, Arora M, Kaundal RK. Neuroprotective potential of combination of resveratrol and 4-amino 1,8 naphthalimide in experimental diabetic neuropathy: focus on functional, sensorimotor and biochemical changes. Free Radic Res 2009; 43:400-8. [PMID: 19291593 DOI: 10.1080/10715760902801509] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The present study investigated whether combination of resveratrol and 4-amino 1,8 naphthalimide (4-ANI) is effective in the development of diabetic neuropathy (DN). After 6 weeks of diabetes induction, rats were treated for 2 weeks with resveratrol and 4-amino 1,8 naphthalimide (4-ANI) either alone or in combination. Experimental end points included functional, behavioural and biochemical parameters along with PAR immunohistochemistry and were performed at the end of treatment. Combination of resveratrol (10 mg/kg) and 4-ANI (3 mg/kg) attenuated conduction and nerve blood flow deficits and resulted in amelioration of diabetic neuropathic pain. Significant reversal of biochemical alterations (peroxynitrite, MDA and NAD levels) were also observed, as well as PAR accumulation in the sciatic nerve. This study suggests the beneficial effect of combining resveratrol and 4-ANI in experimental diabetic neuropathy.
Collapse
Affiliation(s)
- Shyam S Sharma
- Molecular Neuropharmacology Laboratory, Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Sector-67, S.A.S. Nagar, Mohali, Punjab-160062, India.
| | | | | | | |
Collapse
|
44
|
Abstract
Diabetic neuropathy is the most common complication of diabetes, affecting 50% of diabetic patients. Currently, the only treatment for diabetic neuropathy is glucose control and careful foot care. In this review, we discuss the idea that excess glucose overloads the electron transport chain, leading to the production of superoxides and subsequent mitochondrial and cytosolic oxidative stress. Defects in metabolic and vascular pathways intersect with oxidative stress to produce the onset and progression of nerve injury present in diabetic neuropathy. These pathways include the production of advanced glycation end products, alterations in the sorbitol, hexosamine and protein kinase C pathways and activation of poly-ADP ribose polymerase. New bioinformatics approaches can augment current research and lead to new discoveries to understand the pathogenesis of diabetic neuropathy and to identify more effective molecular therapeutic targets.
Collapse
Affiliation(s)
- Claudia Figueroa-Romero
- Department of Neurology, University of Michigan, 5017 BSRB, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | | | | |
Collapse
|
45
|
Wiggin TD, Kretzler M, Pennathur S, Sullivan KA, Brosius FC, Feldman EL. Rosiglitazone treatment reduces diabetic neuropathy in streptozotocin-treated DBA/2J mice. Endocrinology 2008; 149:4928-37. [PMID: 18583417 PMCID: PMC2582925 DOI: 10.1210/en.2008-0869] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Diabetic neuropathy (DN) is a common complication of diabetes. Currently, there is no drug treatment to prevent or slow the development of DN. Rosiglitazone (Rosi) is a potent insulin sensitizer and may also slow the development of DN by a mechanism independent of its effect on hyperglycemia. A two by two design was used to test the effect of Rosi treatment on the development of DN. Streptozotocin-induced diabetic DBA/2J mice were treated with Rosi. DN and oxidative stress were quantified, and gene expression was profiled using the Affymetrix Mouse Genome 430 2.0 microarray platform. An informatics approach identified key regulatory elements activated by Rosi. Diabetic DBA/2J mice developed severe hyperglycemia, DN, and elevated oxidative stress. Rosi treatment did not affect hyperglycemia but did reduce oxidative stress and prevented the development of thermal hypoalgesia. Two novel transcription factor binding modules were identified that may control genes correlated to changes in DN after Rosi treatment: SP1F_ZBPF and EGRF_EGRF. These targets may be useful in designing drugs with the same efficacy as Rosi in treating DN but with fewer undesirable effects.
Collapse
Affiliation(s)
- Timothy D Wiggin
- University of Michigan, Department of Neurology, 5017 Basic Science Research Building, 109 Zina Pitcher Road, Ann Arbor, Michigan 48109-2200, USA
| | | | | | | | | | | |
Collapse
|
46
|
Current world literature. Curr Opin Neurol 2008; 21:615-24. [PMID: 18769258 DOI: 10.1097/wco.0b013e32830fb782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
47
|
Saito M, Ueo M, Kametaka S, Saigo O, Uchida S, Hosaka H, Sakamoto K, Nakahara T, Mori A, Ishii K. Attenuation of Cataract Progression by A-3922, a Dihydrobenzofuran Derivative, in Streptozotocin-Induced Diabetic Rats. Biol Pharm Bull 2008; 31:1959-63. [DOI: 10.1248/bpb.31.1959] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Maki Saito
- Department of Molecular Pharmacology, School of Pharmaceutical Sciences, Kitasato University
- Department of Molecular and Cellular Pharmacology, School of Pharmaceutical Sciences, Iwate Medical University
| | - Mayumi Ueo
- Department of Molecular Pharmacology, School of Pharmaceutical Sciences, Kitasato University
| | - Sokichi Kametaka
- Department of Molecular Pharmacology, School of Pharmaceutical Sciences, Kitasato University
| | - Orie Saigo
- Department of Molecular Pharmacology, School of Pharmaceutical Sciences, Kitasato University
| | - Seiichi Uchida
- Department of Biological Research, Division 2, Odawara Research Center, Nippon Soda Co., Ltd
| | - Hideo Hosaka
- Department of Biological Research, Division 2, Odawara Research Center, Nippon Soda Co., Ltd
| | - Kenji Sakamoto
- Department of Molecular Pharmacology, School of Pharmaceutical Sciences, Kitasato University
| | - Tsutomu Nakahara
- Department of Molecular Pharmacology, School of Pharmaceutical Sciences, Kitasato University
| | - Asami Mori
- Department of Molecular Pharmacology, School of Pharmaceutical Sciences, Kitasato University
| | - Kunio Ishii
- Department of Molecular Pharmacology, School of Pharmaceutical Sciences, Kitasato University
| |
Collapse
|