Garcinia kola seeds may prevent cognitive and motor dysfunctions in a type 1 diabetes mellitus rat model partly by mitigating neuroinflammation

Author(s):  
Paul F. Seke Etet ◽  
Mohammed Farahna ◽  
Gwiria M.H. Satti ◽  
Yahia M. Bushara ◽  
Ahmed El-Tahir ◽  
...  

AbstractBackgroundWe reported recently that extracts of seeds ofMethodsRats made diabetic by single injection of streptozotocin were treated daily with either vehicle solution (diabetic control group), insulin, orResultsHyperglycemia (209.26 %), body weight loss (–12.37 %), and T1DM-like cognitive and motor dysfunctions revealed behavioral tests in diabetic control animals were not observed in insulin and extract-treated animals. Similar, expressions of inflammation markers tumor necrosis factor (TNF), iba1 (CD68), and Glial fibrillary acidic protein (GFAP), as well as decreases of neuronal density in regions involved in cognitive and motor functions (–49.56 % motor cortex, –33.24 % medial septal nucleus, –41.8 % /–37.34 % cerebellar Purkinje /granular cell layers) were observed in diabetic controls but not in animals treated with insulin orConclusionsOur results indicate that T1DM-like functional alterations are mediated, at least partly, by neuroinflammation and neuronal loss in this model. The prevention of the development of such alterations by early treatment with

2009 ◽  
Vol 37 (02) ◽  
pp. 361-372 ◽  
Author(s):  
Ming Xiang ◽  
Jing Tang ◽  
Xiao-Lei Zou ◽  
Zeng-Yu Zhao ◽  
Yun-Yang Wang ◽  
...  

The anti-hyperglycemic and immunomodulatory activities of the ethanol extract from Paecilomyces Hepiali Chen (PHC), a Chinese medicine, were investigated in streptozotocin-induced type 1 diabetic (T1DM) mice. Male Balb/c mice, which were i.p. injected with streptozotocin (STZ, 50 mg/kg, for 5 consecutive days) on Day 7, were orally administered saline (the normal control and diabetic control group), Metformin (60 mg/kg, b.w., positive group), or the extract (100 mg/kg, b.w., PHC prevention group) from Day 1 to Day 28, Mice i.p. injected with streptozotocin (STZ, 50 mg/kg, b.w.) for 5 consecutive days prior to PHC treatment (100 mg/kg, b.w.) were used as the PHC treatment group. The effects of PHC on postprandial blood glucose concentrations, plasmatic insulin levels, morphology of pancreatic β cells and CD4+ T cells proliferation after 28-day treatment were monitored. Results showed that PHC administered 6 days before STZ induction of diabetes in mice significantly decreased blood glucose level (p < 0.01). An increase of insulin level was also observed as compared to those in the diabetic control group (p < 0.01). In addition, fewer inflammatory cells infiltrated the pancreatic islet and fewer β cells death by apoptosis within the inflamed islets were observed. More importantly, the CD4+ T cell proliferation was remarkably attenuated ex vivo in mice preventively treated with PHC (p < 0.01). In comparison to the PHC prevention group, no significant hypoglycemia, changes of insulin level and β cell protection were observed in mice treated with PHC after STZ administration. Our findings demonstrated that preventive administration of PHC protected β cells from apoptosis in type 1 diabetes induced by STZ, and the underlying mechanism may be involved in suppressing CD4+ T cells reaction, reducing inflammatory cells infiltration and protecting beta cell apoptosis in pancreatic islet.


2020 ◽  
Vol 24 (4) ◽  
pp. 308-319
Author(s):  
Kobra Soleymani ◽  
◽  
Asieh Abbassi Daloii ◽  
Ali Reza Barari ◽  
Ayoub Saeidi ◽  
...  

Background: The effects of exercise and stevia extract on diabetes-related indicators have been already reported, but their cardiac benefits on Type 1 Diabetes (T1D) are unclear. Objective: This study aims to evaluate the effect of eight weeks of endurance training and stevia supplementation on gene expression levels of Atrial Natriuretic Peptide (ANP) and β-Myosin Heavy Chain (β-MHC) in the heart tissue of T1D rats. Methods: In this experimental study, 25 rats with the average weight of 250-300 g were divided into five groups; healthy control, diabetic control, diabetic+supplementation, diabetic+training, and diabetic+training+supplementation. T1D was induced by intraperitoneal injection of streptozotocin (55 mg/kg/ body weight). Endurance training was performed 5 days a week at a speed of 20-30 meters per minute on a surface with a zero slope for 8 weeks. Stevia was gavaged in a dose of 250 mg/kg/body weight. Rats were slaughtered 48 hours after the last training session. Cardiac tissue was used to measure the parameters. The gene expression of ANP and b-MHC in cardiac tissue was measured by real-time Polymerase Chain Reaction (PCR) method. Data were analyzed by using one-way ANOVA and Bonferroni post hoc test. Findings: The gene expression levels of ANP and β-MHC were significantly higher in the diabetic control group compared to the healthy control group (P=0.001), and significantly lower in the diabetic+training and diabetic+training+supplementation groups compared to the diabetic control group (P=0.001). Conclusion: Endurance training and stevia supplementation can have beneficial effects on the heart of T1D rats.


2013 ◽  
Vol 39 (1) ◽  
pp. 6-10
Author(s):  
SMMMA Hasan ◽  
MI Khan ◽  
BU Kumar ◽  
MZ Sadeque

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


Author(s):  
Subhash T. Kumbhar ◽  
Hemant D. Une ◽  
Anagha M. Joshi ◽  
Pralhad B. Wangikar

<p><strong>Objective: </strong>This study evaluated the toxic effect of simultaneously injected normal doses of caffeine and nicotine in diabetic lab animals.</p><p><strong>Methods: </strong>A study was conducted for three weeks in seven rat groups (n=6); viz. first non-diabetic group treated with caffeine (20 mg/kg, ip) twice daily, second with nicotine (0.4 mg/kg, ip) twice daily and third with both treatments simultaneously; whereas other three groups treated in the same way but inducing diabetes; and employing the seventh group as diabetic control. Type 2 diabetes was induced by high fatty diet prior for two weeks and a single streptozotocin injection on 1<sup>th</sup> day of study in all diabetic groups. Blood and urine samples were collected weekly to estimate blood parameters. Animals were sacrificed, and organs were collected for histopathology analysis.</p><p><strong>Results: </strong>Most blood parameters showed a rapid increase in diabetes in co-addiction group compared with their single addiction or non-addiction control groups. Caffeine-nicotine co-addiction group showed about 60-80 mg/dl (p&lt;0.05) rise in serum glucose, 15-20 U/l in AST (p&lt;0.01), 80-100 U/l in ALT (p&lt;0.01), 20-30 mg/dl in Urea (p&lt;0.01), 02 mg/dl in creatinine (p&lt;0.05), 12-15 mg/dl (p&lt;0.01) in LDL-C, 6-9 mg/dl in VLDL-C (p&lt;0.01) and 60-90 mg/dl in TC levels (p&lt;0.01) when compared with non-addicted diabetic control. There was a significant reduction in HDL-C (p&lt;0.01) while the less significant rise in triglycerides in the case of co-addiction as compared to non-addiction diabetic control group. Histopathology results exhibited moderate to severe tissue damage in agreement with clinical biochemistry results.</p><p><strong>Conclusion: </strong>Nicotine-caffeine co-addiction harms exceptionally more in type 2 diabetes greater than their single addiction or non-addiction.</p>


Author(s):  
Soumya Prakash Rout ◽  
Durga Madhab Kar ◽  
Laxmidhar Maharana

<p>ABSTRACT<br />Context: Several species of the genus Annona were reported to have hypoglycemic properties and this makes Annona reticulata Linn. (Annonaceae)<br />an interesting plant for investigating its anti-hyperglycemic potential.<br />Objective: Different fractions prepared from hydro-alcoholic extract of A. reticulata leave were investigated for their blood glucose lowering effect on<br />Streptozotocin (STZ) induced hyperglycemic rats.<br />Methods: Ethyl acetate, methanol, and residual fractions (at dose level of 100 mg/kg by oral route) prepared from the hydro-alcoholic extract of<br />A. reticulata leave were administered for 14 consecutive days to STZ induced hyperglycemic rats for evaluation of their anti-hyperglycemic potential.<br />Anti-hyperglycemic potential was assessed by observation of a decrease in fasting blood glucose level.<br />Results: The studies revealed that ethyl acetate fraction decreased the blood glucose level of hyperglycemic rats from 447.67 to 234.17 mg/dL and is<br />significant (p&lt;0.001) when compared with diabetic control group. The residual fraction and methanolic fraction decreased blood glucose level from<br />417.83 to 402.50 mg/dL and 432.33 to 371.67 mg/dL respectively but not significant when compared with the diabetic control group. Standard drug<br />metformin (dose 300 mg/kg) reduced the blood glucose level from 447.33 to 219.50 mg/dL.<br />Discussion: Ethyl acetate fraction at tested dose level was capable not only to control the elevated blood glucose level but also able to attenuate<br />certain secondary parameters associated with STZ induced hyperglycemia.<br />Conclusion: This study suggested that the ethyl acetate fraction prepared from hydro-alcoholic extract of A. reticulata leave exhibit potential antihyperglycemic<br />property<br />in the tested<br />experimental<br />models and should be investigated<br />further.<br />Keywords: Streptozotocin, Diabetes, Dyslipidemia.</p>


2016 ◽  
Vol 2016 ◽  
pp. 1-5 ◽  
Author(s):  
Bonaventure Chukwunonso Obi ◽  
Theophine Chinwuba Okoye ◽  
Victor Eshu Okpashi ◽  
Christiana Nonye Igwe ◽  
Edwin Olisah Alumanah

Diabetes mellitus is one of the serious global health problems affecting a significant proportion of both developed and developing countries. Overproduction of free radicals and oxidative stress has been associated with the development of diabetic complications. In the present study, the antioxidant effects of metformin (MET), glibenclamide (GLI), and repaglinide (REP) were evaluated in alloxan-induced diabetic rats. The findings from this study may possibly help in understanding the efficacy of these standard drugs in managing the complications arising from diabetes mellitus (DM). Alloxan (130 mg/kg BW) was administered as a single dose to induce diabetes. Four (4) groups of rats (n=6) were used; group 1 served as diabetic control while groups 2, 3, and 4 were the diabetic test groups that received MET (25 mg/kg), GLI (2.5 mg/kg), and REP (0.5 mg/kg), respectively. The result of the study showed significant (p<0.05) improvement in the altered antioxidant enzymes (SOD, CAT) and GSH concentration in diabetic treated rats compared with the diabetic control group. MET and REP produced significant effect on the MDA concentration while GLI showed insignificant reduction in the MDA concentration compared with the diabetic control. Findings from this study suggest that the administration of MET, GLI, and REP exerts significant antioxidant effects in alloxan-induced diabetic rats, thus contributing to the protective effect against oxidative stress-induced damage during diabetic complications.


2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Esmaeel Ebrahimi ◽  
Saeed Shirali ◽  
Rahman Talaei

Diabetes mellitus is the most common endocrine disorder worldwide and it is usually along with complications such as retinopathy, neuropathy, nephropathy, and cardiovascular disease. The prevalence of diabetes is increasing and its treatment has created concerns in society. The use of herbal medicine can be helpful in the management of diabetes mellitus. The aim of this study was to investigate the protective effect of marigold hydroalcoholic extract under diabetes condition. A total of 36 male Wistar rats were randomly divided into four groups: normal control group, diabetic control group, and groups treated with 250 or 500 mg/kg hydroalcoholic extract of marigold flower during four weeks. At the end of the study, the rats were anesthetized with ketamine/xylazine, and sampling was performed through cardiac puncture. The results showed that treatment with marigold improved body weight. In addition, we determined that marigold normalized the level of CK-MB, total CK, amylase, and lipase in a dose-dependent manner. Probably these effects resulted from antioxidant property of marigold; thus we suggest that marigold flower can be useful for reduction of diabetes complication.


2019 ◽  
Vol 30 (Number 1) ◽  
pp. 26-29
Author(s):  
S Sultana ◽  
N Y Mili ◽  
R Afroz ◽  
S Parveen

The experimental animal study was undertaken to investigate the preventive role ginger juice against hyperglycemia in alloxan induced diabetic rats.Male wistar rats,(130-150)gm wt fed on standard diet and water ad libitum, were divided into 3 groups(n=6) in each group: Group-L non-diabetic control group, Group-II, diabetic control & Group-III, normal rats pretreated with ginger before they were made diabetics. Diabetes was induced by inj. alloxan 150mg/kg body wt.,tp (Group-IL on 2nd day & Group-Ill, on the 9th day).Rats having blood glucose level of more than 7mmol/L on day 5(72 hours after alloxan inj) were considered diabetic & selected for experiment. Rats of Group-Ill received Zingiber officinale (ginger juice) (4m1/kg.body,wt orally) for 7 days (day 2-day8) through Pyles tube before alloxan induction & 3days after the induction. On day 12, animals were sacrificed under light ether anaesthesia, blood was collected by cardiac puncture for blood glucose estimation. Pretreatment with Zingiber officinale (ginger) juice significantly (p<0.01) reduced alloxan induced hyperglycemia.Zingiber officinale (ginger) is one of the most widely used spices and is reputed to have medicinal properties against diabetes mellitus. This study suggests that pretreatment with Zingiber officinale(ginger) prevents the development of hyperglycemia in alloxan induced diabetic rats.


Author(s):  
Padmaja Shetty K. ◽  
Pushpa V. H.

Background: Diabetes mellitus is a multifactorial metabolic disorder with several microvascular and macrovascular complications. Several plants have been used as dietary adjuvants to conventional drug therapy. Garcinia indica exhibits significant hypolipidemic and hypoglycemic activity. This study was conducted to evaluate the hypoglycemic effects of methanolic extract of seeds of Garcinia indica on blood glucose levels in Streptozotocin induced diabetic albino rats.Methods: Five groups of wistar albino rats (n=6) weighing 150-200g of either sex aged 3-4 months were obtained for the study. After overnight fasting, streptozotocin (50mg/kg) was administered intraperitoneally to induce diabetes. Five groups are: Group-1: Non diabetic control group, Group-2: diabetic control, Group-3: diabetic standard, Group-4: test group, Group-5: half of test + half of standard. Fasting blood sugar was estimated on 1, 3, 7, 14 and 28th day by capillary blood glucose method. The data obtained were subjected to statistical analysis.Results: In this study, following Streptozotocin administration the blood glucose levels increased in all groups on day 0. In group 2, blood glucose level gradually increased to 445.6±1.75mg/dl over a period of 4 weeks. Following glibenclamide administration in Group 3 - there was a gradual reduction in blood glucose levels: 269.8mg/dl - day 7 to 101.8mg/dl - week 4. Group 4 - persistent and significant (p<0.05) fall in blood glucose levels reaching upto 107mg/dl at the end of 4 weeks. Group 5 - 330mg/dl on day 1 which significantly (p<0.05) reduced to 101mg/dl on day 28. There was improvement in weight in group 4 and group 5 diabetic rats.Conclusions: The extract alone and in combination with glibenclamide showed significant hypoglycemic activity in comparison to diabetic control group.


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