scholarly journals Effect of ropivacaine on peripheral neuropathy in streptozocin diabetes-induced rats through TRPV1-CGRP pathway

2019 ◽  
Vol 39 (11) ◽  
Author(s):  
Nanwen Zhang ◽  
Haixiang Wei ◽  
Weifang Wu ◽  
Peimin Lin ◽  
Yuan Chen ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Peripheral Neuropathy ◽  
Conduction Velocity ◽  
Nerve Conduction Velocity ◽  
Diabetic Control ◽  
Control Group ◽  
Diabetic Control Group ◽  
Nondiabetic Control ◽  
Group A ◽  
Group B

Abstract Objective To determine the effect of ropivacaine on peripheral neuropathy in diabetic rats and its possible mechanism. Methods Forty-eight Sprague–Dawley rats were randomly divided into six groups: nondiabetic control group, nondiabetic group A (0.25% ropivacaine), nondiabetic group B (0.75% ropivacaine), diabetic control group (diabetic peripheral neuropathy (DPN) +artificial cerebrospinal fluid), diabetic group A (DPN+0.25% ropivacaine), and diabetic group B (DPN + 0.75% ropivacaine), with eight rats in each group. Within an hour of the last administration, the sciatic motor nerve conduction velocity (MNCV) of each group was measured, and the morphological changes of rat sciatic nerve were observed by HE, Weil’s staining and electron microscopy. The expression of transient receptor potential vanilloid (TRPV1) in the spinal cord dorsal horn of rats was analyzed by immunohistochemistry, and the expression of Calcitonin gene-related peptide (CGRP) protein in the spinal cord was analyzed by Western blot. Results Compared with the nondiabetic control group, elevated blood glucose, decreased weight and reduced average mechanical withdrawal threshold (MWT), additionally, the sciatic nerves showed significantly slowed conduction velocity (both P<0.001) and damaged pathological structure, the expression of TRPV1 and CGRP were decreased (both P<0.001) in the diabetic groups. Compared with the diabetic control group, down-regulation of TRPV1 and CGRP in spinal cord was significant for the diabetic groups A and B treated with 0.25 and 0.75% ropivacaine, the higher concentration of ropivacaine correlated with a greater change. Conclusion Ropivacaine can significantly block sciatic nerve conduction velocity in DPN rats in a concentration-dependent manner, which may be related to the expression of the TRPV1-CGRP pathway.

scholarly journals Effect of Fenugreek (Methi) on the Thymic volume in Streptozotocin-induced Diabetic Rats

1970 ◽  
Vol 16 (1) ◽  
pp. 1-4
Author(s):  
DK Mondal ◽  
MM Karim ◽  
S Mohal ◽  
BMA Yousuf ◽  
KM Shamim
Keyword(s):  
Body Weight ◽  
Treated Group ◽  
Diabetic Control ◽  
Diabetic Rats ◽  
Diabetic Group ◽  
Control Group ◽  
Final Body Weight ◽  
Diabetic Control Group ◽  
Group A ◽  
Group B

Effect of fenugreek (Trigonella foenumgraecum) on thymic volume was studied in 30 long Evansrats. Among the total, 10 were treated with only vehicle (non-diabetic control - group A); 10 weretreated with streptozotocin only (diabetic control - group B) and 10 were treated with fenugreek(fenugreek treated - group C). Mean relative thymic volumes were 0.22210.018 ml/100 gm ofcorresponding final body weight (Mean 1 SEM), 0.14710.015 and 0.19910.020 in group A, B and Crespectively. In non-diabetic control group the thymic volume was significantly higher (p=0.005)than that of diabetic control group. In fenugreek treated diabetic group the volume was alsosignificantly higher (p=0.05) from that of diabetic control group and very much nearer to nondiabeticcontrol group (p=0.398). Fenugreek may preserve the thymic volume considerably indiabetic rats.doi: 10.3329/taj.v16i1.3892TAJ June 2003; Vol.16(1): 1-4

scholarly journals Comparative Study of the Effect of Ethanol Extract of Psidium Guajava Linn Leaves with Glibenclamide on Experimentally Induced Diabetes Mellitus in Rats

2017 ◽  
Vol 5 (1) ◽  
pp. 9-14 ◽  
Author(s):  
Azmary Momtaz ◽  
Khaleda Sharmin ◽  
Sharmin Rahman ◽  
Nashid Sultana ◽  
Rayhana Sharmin
Keyword(s):  
Diabetes Mellitus ◽  
Body Weight ◽  
Ethanol Extract ◽  
Psidium Guajava ◽  
Diabetic Control ◽  
Control Group ◽  
Diabetic Control Group ◽  
Group A ◽  
Group B ◽  
Experimentally Induced

Background: Diabetes Mellitus is a major health problem not only in urban but also in the rural areas of Bangladesh. Regarding its treatment, a suitable drug is yet to be available which can permanently cure this disease. Over 400 traditional plants have been reported for the treatment of diabetes, but only a small number have received scientific and medical evaluation to assess their efficacy.Objective: The study was performed to compare the anti diabetic effect of Psidium guajava Linn leaves with an oral anti diabetic drug (Glibenclamide), in experimentally induced diabetic rats.Materials and method: The experiment was carried out in the department of Pharmacology & Therapeutics of Dhaka Medical College, Dhaka, Bangladesh from July 2012 to June 2013. Twenty four healthy rats of Long Evans Norwegian strain were divided into 4 groups (group A, B, C and D) comprising 6 rats in each. Group A (normal control) received standard rat food for 14 days. Diabetes was induced by administration of Alloxan 120 mg/kg/body weight in group B, C and D. Group B (diabetic control group) was given standard rat food. Group C and D was treated with ethanol extract of Psidium guajava leaves 100 mg/kg body weight and Glibenclamide 1.5 mg/kg/day orally respectively. Total duration of the experiment was 15 days.Results: Administration of ethanol extract of Psidium guajava leaves in group C and Glibenclamide in group D produced a significant reduction (p<0.001) in blood glucose level as compared to group B (diabetic control group).Conclusion: Ethanol extract of Psidium guajava leaves can be considered as a potential anti diabetic agent like Glibenclamide but it requires further investigations.Delta Med Col J. Jan 2017 5(1): 9-14

scholarly journals Effect of Alcoholic Catechin Extract on Hyperglycemia, Hyperlipidemia and Liver Functions in Alloxan Diabetic Mice

2014 ◽  
Vol 11 (3) ◽  
pp. 1192-1200
Author(s):  
Baghdad Science Journal
Keyword(s):  
Blood Glucose ◽  
Diabetic Control ◽  
High Density Lipoproteins ◽  
Control Group ◽  
Diabetic Mice ◽  
Diabetic Control Group ◽  
Liver Functions ◽  
Group A ◽  
Serum Biochemical ◽  
Group B

The objective of this study is to estimate the effect of the hydro-ethanolic catechin extract toward blood glucose, lipid profile and liver functions in alloxan diabetic mice. 50 healthy mice (25-30 g) were divided into five groups of ten animals for each. Group A received normal saline as normal control group. To induce diabetes, alloxan (150 mg/kg), intraperitoneal (i.p.) single dose was injected to groups B, C, D and E. Group B represents diabetic control group. Groups C, D and E received ethanolic catechin extract (30 mg/kg and 40 mg/kg) for different periods of 1, 2 and 3 weeks as treated groups. Blood glucose, serum lipids [Total Cholesterol (TC), Triglycerides (TGs) and High Density Lipoproteins (HDL)], asparagine transaminase (AST), alanine transaminase (ALT) and alkaline phosphatase (ALP) were estimated after one, two and three weeks. Group B showed a significant increase in blood glucose, TC, TGs, AST, ALT and ALP as compared to group A. Groups C, D, and E showed a significant decrease in mentioned serum biochemical parameters in comparison to group B. In contrast, groups C, D and E showed significant increase in serum HDL as compared to B group. The results clearly revealed that ethanolic catechin extract possesses significant antihyperglycemic and antihyperlipidemic activities together with its ability to improve liver functions in alloxan diabetic mice.

scholarly journals Comparative study of the effect of ethanolic extract of swietenia mahagoni seeds with rosiglitazone on experimentally induced diabetes mellitus in rats

2013 ◽  
Vol 39 (1) ◽  
pp. 6-10
Author(s):  
SMMMA Hasan ◽  
MI Khan ◽  
BU Kumar ◽  
MZ Sadeque
Keyword(s):  
Blood Glucose ◽  
Ethanolic Extract ◽  
Diabetic Control ◽  
Diabetic Rats ◽  
Control Group ◽  
Diabetic Control Group ◽  
Group B ◽  
Group D ◽  
Swietenia Mahagoni ◽  
Experimentally Induced

The study was performed to compare the blood glucose lowering effect of Swietenia mahagoni seeds with an oral antidiabetic drug, rosiglitazone in experimentally induced diabetic rats. Twentyfour healthy Long Evans Norwegian strain of rats were included in the study and divided into four groups (A, B, C and D) comprising 6 rats each. Group A (control group) received standard rat food for 14 days. Diabetes was induced by a single intraperitoneal administration of alloxan 120mg/kg body weight in Group B, C and D. Group B was given standard food for 10 days and considered as diabetic control. Group C and D were treated with ethanolic extract of Swietenia mahagoni seeds 1000mg/kg and rosiglitazone 10mg/kg orally respectively. Administration of ethanolic extract of Swietenia mahagoni seeds in group C and rosiglitazone in group D produced a significant reduction in blood glucose level as compared to diabetic control (group B). Histological examination of pancreas showed destruction of beta cells in Islets of pancreas in group B whereas retaining of islets and few degranulations of beta cells of pancreas found in group C and group D. The observations and results of the present study provide information that ethanolic extract of Swietenia mahagoni seeds has hypoglycaemic effect in experimentally induced diabetic rats which requires further investigation. DOI: http://dx.doi.org/10.3329/bmrcb.v39i1.15790 Bangladesh Med Res Counc Bull 2013; 39: 6-10

Bone Marrow Transplantation or G-CSF Treatment Can Accelerate Recovery of Injured Spinal Cord in Mice.

Blood ◽  
2004 ◽  
Vol 104 (11) ◽  
pp. 4181-4181
Author(s):  
Damianos Sotiropoulos ◽  
Eleni Siotou ◽  
Evangelia Athanasiou ◽  
Christos Kalpouzos ◽  
Panayotis Kaloyannidis ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Bone Marrow ◽  
Bone Marrow Cells ◽  
Control Group ◽  
Significant Difference ◽  
Cord Injury ◽  
Group A ◽  
B Mice ◽  
The Mean ◽  
Group B

Abstract Mice, unlike rats and humans, have a self recovery mechanism of spinal cord injury. Whether the hematopoietic system is involved in this mechanism is under investigation. In this study we tested whether bone marrow cells transplanted or mobilized by a growth factor in mice with spinal cord injury, can accelerate the recovery. C57bl/6 female mice 10 to 12 weeks of age underwent spinal cord incision in an open operation. The injury was performed as a complete transection including the dura mater and the whole circumference of the cord at the T10-T11 intervertebral space with a micro scalpel (No 11). Group A mice received 200μg/kg/day G-CSF subcutaneously for 7 days, starting 24 hours after operation. Group B mice received 106 light density bone marrow cells from C576bl/6 donor mice intravenously 24 hours after operation. Control group mice received no treatment. Histological evaluation was performed at 48 hours, 1 week, 3 weeks and 5 weeks postoperatively. Paraffin embedded longitudinal samples of spinal cord were cut as serial sections. Spinal cord damage was estimated by measuring the maximum diameter of the area of axonal damage and disruption of astrocytic network using immunostaining for neurofilaments and GFAP. Antibodies against CD68 were applied to identify macrophage aggregations. All measurements were performed by morphometric photo analysis. The volume of fibroblastic infiltration was estimated using a grading system (0–7), based on Van Gieson stain for connective tissue. Functional deficits and recovery over time were evaluated by testing hind limb reflex and coordinated motor function (Kuhn and Wrathal functional tests, modified by Seki et al, 2002). All tests have been videotaped. Outcome scores at 48 hours, 1 week, 3 weeks and 5 weeks postoperatively for the control group, group A and group B mice were analyzed with the Mann-Whitney U test. 48 hours post operatively all mice in all groups were paralyzed in both hind limbs. Gradual improvement was observed in all groups. At week 3 there was a significant difference between the mean scores of functional tests for both treated groups (A and B) compared with the mean scores of the control group. Statistically significant difference (p&lt;0,05) was observed in 5 out of 7 tests for group A and in 3 out of 7 tests for group B. Same difference between Group A mice and control group mice was observed by 5 weeks, while group B had no statistically significant difference. No animal in any of the groups had a complete recovery 5 weeks postoperatively. Spinal cord in control group mice showed a gradually increase of fibroblastic infiltration until 5 week which entirely separated the two ends of the cord. In group A and group B mice a significant decrease of fibroblastic infiltration was observed at week 5 compared with week 3. Macrophage aggregations were evident at weeks 1 and 5 but not at week 3 in all groups. In conclusion our results indicate that light density bone marrow transplanted cells or G-CSF treatment can accelerate spinal cord injured mice recovery. It is possible that this is associated with a decrease in fibroblastic infiltration of spinal cord. Macrophage aggregation may also play an important role in the mechanism of recovery in mice, while in rats a different reaction including cavitation and delayed demyelination prohibits neurological recovery.

scholarly journals Effect of Fenugreek (Methi) on Amount of Connective Tissue in Thymic Sections in Streptozotocin-induced Diabetic Rats

1970 ◽  
Vol 9 (1) ◽  
pp. 49-52
Author(s):  
DK Mondal ◽  
MMM Ahmed ◽  
PK Chowdhury ◽  
A Khanom ◽  
S Mohal ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Connective Tissue ◽  
Diabetic Control ◽  
Diabetic Rats ◽  
Control Group ◽  
Key Words Diabetes Mellitus ◽  
Key Words Diabetes ◽  
Diabetic Control Group ◽  
Nondiabetic Control ◽  
Long Evans

Context: Diabetes mellitus causes a marked increased in amount of connective tissue in thymus. Fenugreek has the hypoglycaemic effect. The study was carried out to find out whether Trigonella foenumgraecum (fenugreek seeds/methi seeds) has got any preventive role against the increment in amount of connective tissue in thymic section in diabetes mellitus. Study type: an experimental study on Long Evans rats which were divided into three equal groups depending on their different sorts of dietary feeding and drug treatment. Setting: Anatomy department of the then IPGMR (Institute of Post Graduate Medicine and Research) at present BSMMU (Bangabandhu Sheikh Mujib Medical University) and BIRDEM (Bangladesh Institute of Research and Rehabilitation in diabetes, Endocrine & Metabolic Disorders). Subjects: Fifty eight healthy young Long Evans rats of either sex weighing 72 to 174gm aged between 50 to 60 days were used in this study. Main outcome measures: variation in amount of connective tissue in thymic sections in different groups of rats. Result: in the nondiabetic control group the increased in amount of connective tissue in thymic section is lower than in diabetic control group. On the other hand, the increased in amount of connective tissue in thymic section in the fenugreek-treated diabetic rats is also lower than the amount of connective tissue in thymic section in diabetic control group but it is more or less similar to the amount of connective tissue in thymic section in nondiabetic control group. Conclusion: Fenugreek showed a tendency of acting against the increased in amount of connective tissue in thymic section in Streptozotocin-induced diabetes mellitus. However, further investigations are recommended for establishing fenugreek as a safe, useful effective agent to minimize the increment in amount of connective tissue in thymic section improving the diabetic condition by acting as antidiabetogenic agent. Key words: Diabetes mellitus; Connective tissue; Fenugreek; Thymus DOI: http://dx.doi.org/ 10.3329/bja.v9i1.8149 Bangladesh Journal of Anatomy January 2011, Vol. 9 No. 1 pp 49-52

scholarly journals THERAPY OF ENDOCRINE DISEASE: A systematic review and meta-analysis of α-lipoic acid in the treatment of diabetic peripheral neuropathy

2012 ◽  
Vol 167 (4) ◽  
pp. 465-471 ◽  
Author(s):  
Tingting Han ◽  
Jiefei Bai ◽  
Wei Liu ◽  
Yaomin Hu
Keyword(s):  
Peripheral Neuropathy ◽  
Treatment Group ◽  
Conduction Velocity ◽  
Nerve Conduction ◽  
Methodological Quality ◽  
Nerve Conduction Velocity ◽  
Meta Analysis ◽  
Control Group ◽  
Controlled Trials ◽  
Conduction Velocities

ObjectiveTo evaluate the effects and safety of 300–600 mg α-lipoic acid (ALA) given i.v. for diabetic peripheral neuropathy (DPN).MethodsWe searched the databases of Medline, Embase, and Cochrane central register of Controlled Trials and Chinese biological medicine for clinical trials of ALA in the treatment of DPN. Data were extracted to examine methodological quality and describe characteristics of studies. The primary outcomes were efficacy, median motor nerve conduction velocity (MNCV), median sensory nerve conduction velocity (SNCV), peroneal MNCV, and peroneal SNCV. Secondary outcomes were adverse events.ResultsFifteen randomized controlled trials met the inclusion criteria. The treatment group involved the administration of ALA 300–600 mg i.v. per day. And the control group used the same interventions except for ALA. Compared with the control group, nerve conduction velocities increased significantly in the treatment group. The weighted mean differences in nerve conduction velocities were 4.63 (95% confidence interval 3.58–5.67) for median MNCV, 3.17 (1.75–4.59) for median SNCV, 4.25 (2.78–5.72) for peroneal MNCV, and 3.65 (1.50–5.80) for peroneal SNCV in favor of the treatment group. The odds ratio in terms of efficacy was 4.03 (2.73–5.94) for ALA. Furthermore, no serious adverse events were observed during the treatment period.ConclusionsThe results of this meta-analysis provide evidence that treatment with ALA (300–600 mg/day i.v. for 2–4 weeks) is safe and that the treatment can significantly improve both nerve conduction velocity and positive neuropathic symptoms. However, the evidence may not be strong because most of the studies included in this meta-analysis have poor methodological quality.

scholarly journals Efficacy and Safety of the Injection of the Traditional Chinese Medicine Puerarin for the Treatment of Diabetic Peripheral Neuropathy: A Systematic Review and Meta-Analysis of 53 Randomized Controlled Trials

2018 ◽  
Vol 2018 ◽  
pp. 1-14 ◽  
Author(s):  
Baocheng Xie ◽  
Qinghui Wang ◽  
Chenhui Zhou ◽  
Jiahuan Wu ◽  
Daohua Xu
Keyword(s):  
Peripheral Neuropathy ◽  
Conduction Velocity ◽  
Nerve Conduction ◽  
Diabetic Peripheral Neuropathy ◽  
Nerve Conduction Velocity ◽  
Motor Nerve ◽  
Meta Analysis ◽  
Sensory Nerve ◽  
Control Group ◽  
Efficacy And Safety

Objective. The injection of the traditional Chinese patent medicine puerarin has been widely used in the treatment of various diseases such as angina pectoris or ischemic stroke. We aim to evaluate the efficacy and safety of puerarin injection for the treatment of diabetic peripheral neuropathy (DPN). Methods. A systematic literature search was performed in seven medical databases from their inception until June 2017. 53 studies with RCTs, totaling 3284 patients, were included in this meta-analysis. The included studies were assessed by the Cochrane risk of bias and analyzed by Review Manager 5.3 software. Results. The meta-analysis showed that puerarin injection for the treatment of DPN was significantly better compared with the control group in terms of the total effective rate. The result showed that puerarin injection for the treatment of DPN can significantly increase the probability of sensory nerve conduction velocity (SNCV) and motor nerve conduction velocity (MNCV) of the median and peroneal nerves. Conclusions. This meta-analysis demonstrated that puerarin injection may be more effective and safe for the treatment of DPN. However, further and higher quality RCTs are required to prove its efficacy and provide meaningful evidence for clinical treatment due to the poor methodological quality.

scholarly journals Applicability of High-Frequency Ultrasound to the Early Diagnosis of Diabetic Peripheral Neuropathy

2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Xishun Ma ◽  
Tongxia Li ◽  
Lizhen Du ◽  
Gang Liu ◽  
Ting Sun ◽  
...  
Keyword(s):  
Blood Flow ◽  
Peripheral Neuropathy ◽  
Early Diagnosis ◽  
Conduction Velocity ◽  
Diabetic Peripheral Neuropathy ◽  
High Frequency ◽  
High Frequency Ultrasound ◽  
Group A ◽  
Group B ◽  
Frequency Ultrasound

This study investigated the applicability of high-frequency ultrasound (HFU) to the early diagnosis of diabetic peripheral neuropathy (DPN). Patients with type 2 diabetes ( N = 60 ) were divided into diabetic nonperipheral neuropathy and DPN groups (group A and group B, respectively; n = 30 each) based on electroneurophysiologic findings. Additionally, 30 nondiabetic patients were included as the healthy control group (group C). We calculated the cross-sectional area (CSA) of the median nerve (MN) of the right upper limb at 7 different sites (MN1–7) based on measured width ( W ) and thickness ( T ). Ultrasound imaging characteristics of the MN including internal echo, internal structure, boundary, epineurium, and blood flow were recorded. The 90 subjects (51 male and 39 female) had an average age of 56.09 ± 12.66 years. W , T , and CSA of the MN were increased in group A compared to group C (with significant differences at MN1, MN4, and MN7 ( P < 0.05 )) and in group B compared to group C (with significant differences at all 7 levels, especially MN6 and MN7 ( P < 0.05 )). Receiver operating characteristic curve analysis showed that CSA at the MN7 level had the highest diagnostic accuracy for DPN in group B, with a threshold value of 12.42 mm2. Ultrasound examination revealed that the MN had lost the internal sieve mesh structure and showed reduced echo, a partial blood flow signal, and thickened epineurium in patients with DPN; these findings were particularly obvious at MN6 and MN7, corresponding to the carpal tunnel. CSA was positively correlated with motor latency and F wave average latency and negatively correlated with motor conduction velocity, motor amplitude, and sensory conduction velocity in group B. Thus, HFU may be useful for the early diagnosis of DPN, which can improve clinical outcomes.

scholarly journals Ameliorative Effect of Chlorophyllin on Oxidative Stress in Experimental Model of Diabetes

2017 ◽  
Vol 8 (4) ◽  
pp. 506 ◽  
Author(s):  
Abani K Patar ◽  
Surya Bhan ◽  
Donkupar Syiem ◽  
Anupama Sharma
Keyword(s):  
Oxidative Stress ◽  
Lipid Peroxidation ◽  
Diabetic Control ◽  
Protein Carbonyl ◽  
Control Group ◽  
Diabetic Mice ◽  
Ultrastructural Studies ◽  
Ameliorative Effect ◽  
Group A ◽  
Group B

The aim of this present study was to investigate the effect of chlorophyllin (CHL) on oxidative stress in Streptozotocine (STZ) induced diabetic mice. For the study, mice were divided into Group A: normal control, Group B: diabetic control, Group C: diabetic mice treated with the ascorbic acid, and Group D: diabetic mice treated with CHL. Levels of Reactive Oxygen Species (ROS), lipid peroxidation, protein carbonyl, superoxide dismutase (CuZn SOD &amp;Mn-SOD), catalase (CAT), glutathione peroxidase (GPx), and glutathione reductase (GR) activities were examined in kidney and heart tissues of different experimental groups. Histological and ultrastructuralstudies were also carried out to evaluate any changes in tissues as well as sub-cellular organelles. ROS, lipid peroxidation, and protein carbonyl levels have been significantly decreased with concomitant increased of CuZn SOD, Mn-SOD, CAT, GPx, and GR activity in CHLtreated diabetic mice. The histological and ultrastructural studies showed that CHL attenuates the detrimental effect of oxidative stress and alleviated tissue injuries in STZ induced diabetic mice. These results suggested that CHL possesses antioxidative activity and has the potential to amelioratediabetes-associated oxidative stress in mice.

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