scholarly journals Assessment of The Effects Of Crude Metabolic Extracts (Leaf And Twig) of Loranthus Micranthus On Streptozotocin Induced Diabetic Rats

2020 ◽  
Vol 3 (1) ◽  
pp. 01-14
Author(s):  
Bodun Oye Olakanmi ◽  
Olufunke Esan Olorundare ◽  
Saheed Oanrewaju Afolabi ◽  
Anoka Njan ◽  
Olugbenga Akinola ◽  
...  
Keyword(s):  
Serum Insulin ◽  
Glycated Haemoglobin ◽  
Diabetic Control ◽  
Atherogenic Index ◽  
Control Group ◽  
Phytochemical Analysis ◽  
Vitro Assay ◽  
Diabetic Control Group ◽  
Tnf Α

The antidiabetic effects of crude methanolic extracts of the leaf and twig of Loranthus micranthus was evaluated in Wister rats. To assess this, data were obtained for the determinant parameters of diabetic complications. Streptozotocin was administered for induction of diabetes; diabetic state was confirmed by persistent hyperglycemia (FBG ≥ 300mg/dl) at 72 hours post induction. Invitro inhibitory activity on α- amylase and α-glucosidase was assayed. Serum insulin, TNF-α, Total cholesterol, HDL, LDL, TG, atherogenic index, liver glycogen and glycated haemoglobin were evaluated. Histology of the pancreas was assessed. Phytochemical analysis revealed the presence of unique compounds in both extracts. In-vitro assay showed inhibitory effects of both extracts on α-amylase and α-glucosidase activity. Hyperglycemia was controlled in both extract-treated groups comparable to glibenclamide. Weight loss after diabetic induction was ameliorated in extracts treated groups; serum insulin level of the extracts-treated and glibenclamide treated-group were higher than the diabetic control group. Serum TNF-α level of extracts-treated and glibenclamide-treated groups were significantly lower than the diabetic control group. Glycated haemoglobin levels of diabetic control group were higher than the extracts treated and glibenclamide group. Dyslipidemia observed in the diabetic control group were ameliorated in all extract-treated groups; atherogenic index of diabetic control group was higher than extracts-and-glibenclamide treated groups. Histopathological assessment showed that the leaf and twig extracts of Loranthus micranthus may possess β cell regenerating activity. Findings from this study suggest that the leaf and twig extracts of Loranthus micranthus ameliorate symptoms and complications of streptozotocin-induced diabetes in rats.

scholarly journals Antidiabetic and antihyperlipidemic effects of Dillenia indica (L.) leaves extract

2011 ◽  
Vol 47 (2) ◽  
pp. 373-378 ◽  
Author(s):  
Sunil Kumar ◽  
Vipin Kumar ◽  
Om Prakash
Keyword(s):  
Body Weight ◽  
Serum Insulin ◽  
Oral Treatment ◽  
Insulin Level ◽  
Diabetic Control ◽  
Diabetic Rats ◽  
Antidiabetic Activity ◽  
Control Group ◽  
Diabetic Control Group ◽  
Dillenia Indica

The present study was carried out to evaluate antidiabetic and antihyperlipidemic effects of Dillenia indica methanolic leaves extracts in streptozotocin induced diabetic Wistar rats by administering graded oral doses (250 and 500 mg/kg body weight) for 21 days. The extract showed significant antidiabetic activity (p<0.001). Furthermore, the decreased body weight of rats was significantly improved after extract treatments. Daily oral treatment with the extract for 21 days to diabetic rats, also resulted in significant reduction in serum cholesterol, triglycerides and serum transaminase levels but HDL-cholesterol level was found to be improved (p<0.001) as compared to the diabetic control group. The extract treatment also showed to enhance serum insulin level in diabetic rats as compared to the diabetic control group. In conclusion, D. indica leaf extract might be useful for diabetes mellitus management and other abnormalities associated with this metabolic disorder.

scholarly journals TNF-α Triggers RIP1/FADD/Caspase-8-Mediated Apoptosis of Astrocytes and RIP3/MLKL-Mediated Necroptosis of Neurons Induced by Angiostrongylus cantonensis Infection

2021 ◽  
Author(s):  
Hongli Zhou ◽  
Minyu Zhou ◽  
Yue Hu ◽  
Yanin Limpanon ◽  
Yubin Ma ◽  
...  
Keyword(s):  
Cell Death ◽  
Enrichment Analysis ◽  
Angiostrongylus Cantonensis ◽  
Gene Set Enrichment Analysis ◽  
Caspase 8 ◽  
Cns Injury ◽  
Vitro Assay ◽  
Tnf Α

AbstractAngiostrongylus cantonensis (AC) can cause severe eosinophilic meningitis or encephalitis in non-permissive hosts accompanied by apoptosis and necroptosis of brain cells. However, the explicit underlying molecular basis of apoptosis and necroptosis upon AC infection has not yet been elucidated. To determine the specific pathways of apoptosis and necroptosis upon AC infection, gene set enrichment analysis (GSEA) and protein–protein interaction (PPI) analysis for gene expression microarray (accession number: GSE159486) of mouse brain infected by AC revealed that TNF-α likely played a central role in the apoptosis and necroptosis in the context of AC infection, which was further confirmed via an in vivo rescue assay after treating with TNF-α inhibitor. The signalling axes involved in apoptosis and necroptosis were investigated via immunoprecipitation and immunoblotting. Immunofluorescence was used to identify the specific cells that underwent apoptosis or necroptosis. The results showed that TNF-α induced apoptosis of astrocytes through the RIP1/FADD/Caspase-8 axis and induced necroptosis of neurons by the RIP3/MLKL signalling pathway. In addition, in vitro assay revealed that TNF-α secretion by microglia increased upon LSA stimulation and caused necroptosis of neurons. The present study provided the first evidence that TNF-α was secreted by microglia stimulated by AC infection, which caused cell death via parallel pathways of astrocyte apoptosis (mediated by the RIP1/FADD/caspase-8 axis) and neuron necroptosis (driven by the RIP3/MLKL complex). Our research comprehensively elucidated the mechanism of cell death after AC infection and provided new insight into targeting TNF-α signalling as a therapeutic strategy for CNS injury.

scholarly journals Endothelial dysfunction precedes hypertension in diet-induced insulin resistance

1998 ◽  
Vol 275 (3) ◽  
pp. R788-R792 ◽  
Author(s):  
Prasad V. G. Katakam ◽  
Michael R. Ujhelyi ◽  
Margarethe E. Hoenig ◽  
Allison Winecoff Miller
Keyword(s):  
Insulin Resistance ◽  
Endothelial Dysfunction ◽  
Serum Insulin ◽  
Serum Glucose ◽  
Mesenteric Arteries ◽  
Control Group ◽  
Sprague Dawley ◽  
Insulin Resistant ◽  
Glucose Levels

The insulin-resistant (IR) syndrome may be an impetus for the development of hypertension (HTN). Unfortunately, the mechanism by which this could occur is unclear. Our laboratory and others have described impaired endothelium-mediated relaxation in IR, mildly hypertensive rats. The purpose of the current study is to determine if HTN is most likely a cause or result of impaired endothelial function. Sprague-Dawley rats were randomized to receive a fructose-rich diet for 3, 7, 10, 14, 18, or 28 days or were placed in a control group. The control group received rat chow. After diet treatment, animals were instrumented with arterial cannulas, and while awake and unrestrained, their blood pressure (BP) was measured. Subsequently, endothelium-mediated relaxation to acetylcholine was determined (in vitro) by measuring intraluminal diameter of phenylephrine-preconstricted mesenteric arteries (∼250 μM). Serum insulin levels were significantly elevated in all groups receiving fructose feeding compared with control, whereas there were no differences in serum glucose levels between groups. Impairment of endothelium-mediated relaxation starts by day 14 [mean percent maximal relaxation (Emax): 69 ± 10% of baseline] and becomes significant by day 18 (Emax: 52 ± 11% of baseline; P < 0.01). However, the mean BP (mmHg) does not become significantly elevated until day 28 [BP: 132 ± 1 ( day 28) vs. 116 ± 3 (control); P < 0.05]. These findings demonstrate that both IR and endothelial dysfunction occur before HTN in this model and suggest that endothelial dysfunction may be a mechanism linking insulin resistance and essential HTN.

scholarly journals The Haematological Effects of Oleanolic Acid in Streptozotocin-Induced Diabetic Rats: Effects on Selected Markers

2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Charity M. Baloyi ◽  
A. Khathi ◽  
Ntethelelo H. Sibiya ◽  
Phikelelani S. Ngubane
Keyword(s):  
Oxidative Stress ◽  
Oleanolic Acid ◽  
Blood Glucose Concentration ◽  
Glycated Haemoglobin ◽  
Diabetic Control ◽  
Cardiovascular Complications ◽  
Diabetic Rats ◽  
Control Group ◽  
Rbc Indices ◽  
Notable Increase

Background. Sustained hyperglycaemia leads to the development of haematological alterations which, if left untreated, is associated with cardiovascular complications. Insulin is the mainstay drug in type 1 diabetes mellitus (T1D); however, the use of insulin is associated with haematological alterations that could further worsen cardiovascular complications. Therefore, the aim of the study was to investigate the haematological effects of oleanolic acid (OA) in streptozotocin- (STZ-) induced diabetic rats. Methods. The animals were separated into five groups; the nondiabetic group (ND), the diabetic control group (DC), and the treatment groups of insulin (170 μg/kg, s.c), metformin (500 mg/kg, p.o), and OA (80 mg/kg, p.o). OA was administered orally twice a day. Thereafter, the animals were sacrificed, and blood and tissues were collected for haematological, hormonal, and oxidative status analysis. Results. Untreated diabetic rats exhibited hyperglycaemia, elevated glycated haemoglobin (HbA1c), oxidative stress, and a reduced erythropoietin (EPO) concentration when compared to ND rats. However, administration of OA attenuated hyperglycaemia, HbA1c, and EPO concentrations compared to DC rats. The reduction of blood glucose concentration, HbA1c, and improved EPO concentrations was further associated with a notable increase in red blood cell (RBC) count and other RBC indices. We also observed an increase in the antioxidant status of the RBCs with a concomitant decrease in oxidative stress. Conclusion. These findings suggest that OA improves diabetes-induced haematological changes caused by hyperglycaemia and attenuates the progression of cardiovascular complications in DM individuals.

scholarly journals 3-Pentylcatechol, a Non-Allergenic Urushiol Derivative, Displays Anti-Helicobacter pylori Activity In Vivo

2020 ◽  
Vol 13 (11) ◽  
pp. 384
Author(s):  
Hang Yeon Jeong ◽  
Tae Ho Lee ◽  
Ju Gyeong Kim ◽  
Sueun Lee ◽  
Changjong Moon ◽  
...  
Keyword(s):  
Helicobacter Pylori ◽  
Triple Therapy ◽  
Inflammatory Cells ◽  
Control Group ◽  
Vitro Assay ◽  
Low Concentrations ◽  
H Pylori ◽  
Stomach Mucous Membrane

We previously reported that 3-pentylcatechol (PC), a synthetic non-allergenic urushiol derivative, inhibited the growth of Helicobacter pylori in an in vitro assay using nutrient agar and broth. In this study, we aimed to investigate the in vivo antimicrobial activity of PC against H. pylori growing in the stomach mucous membrane. Four-week-old male C57BL/6 mice (n = 4) were orally inoculated with H. pylori Sydney Strain-1 (SS-1) for 8 weeks. Thereafter, the mice received PC (1, 5, and 15 mg/kg) and triple therapy (omeprazole, 0.7 mg/kg; metronidazole, 16.7 mg/kg; clarithromycin, 16.7 mg/kg, reference groups) once daily for 10 days. Infiltration of inflammatory cells in gastric tissue was greater in the H. pylori-infected group compared with the control group and lower in both the triple therapy- and PC-treated groups. In addition, upregulation of cytokine mRNA was reversed after infection, upon administration of triple therapy and PC. Interestingly, PC was more effective than triple therapy at all doses, even at 1/15th the dose of triple therapy. In addition, PC demonstrated synergism with triple therapy, even at low concentrations. The results suggest that PC may be more effective against H. pylori than established antibiotics.

T-614 inhibits human aortic adventitial fibroblast proliferation and promotes interleukin-8 production in vitro

Vascular ◽  
2019 ◽  
Vol 28 (3) ◽  
pp. 314-320
Author(s):  
Weiping Ci ◽  
Tian Wang ◽  
Taotao Li ◽  
Jin Wan
Keyword(s):  
Cell Viability ◽  
Vascular Wall ◽  
Underlying Mechanism ◽  
Interleukin 8 ◽  
Control Group ◽  
Survival Fraction ◽  
Tnf Α ◽  
Significant Difference ◽  
Factor Α

Objectives The effect and underlying mechanism of T-614 (iguratimod) on Takayasu’s arteritis (TA) are unknown. Here, we report the effects of T-614 on cell proliferation and interleukin-8 (IL-8) production in human aortic adventitial fibroblasts (HAAFs) in vitro and explore its initial benefit in terms of vascular wall inflammation and remodeling for patients with TA. Methods HAAFs were cultured with 0, 5, 50, 100, or 250 μg/ml T-614 in the absence or presence of tumor necrosis factor-α (TNF-α) in vitro. Cell viability was determined by a modified MTT assay. Supernatant IL-8 levels were measured by enzyme-linked immunosorbent assays. Results In the presence of TNF-α, compared to that in the control group, cell viability of HAAFs significantly decreased in the 50, 100, and 250 μg/ml T-614 treatment groups (OD value: P <  0.01, P <  0.001, P <  0.001, respectively; survival fraction (SF): P <  0.05, P <  0.001, P <  0.001, respectively). However, there was no significant difference in cell viability between TNF-α-stimulated and unstimulated groups at the same concentration of T-614. In the absence or presence of TNF-α, T-614 suppressed HAAF cell viability dose-dependently (OD value: r = −0.915, P =  0.000; r = −0.926, P =  0.000, respectively; SF: r = −0.897, P =  0.000; r = −0.885, P =  0.000, respectively). Compared to that in the control group, in the absence of TNF-α, IL-8 levels in the 5 and 100 μg/ml T-614-treated groups were significantly higher ( P <  0.05); in the presence of TNF-α, IL-8 levels in the 5, 50, and 100 μg/ml T-614-treated groups were significantly higher ( P <  0.001, P <  0.001, P <  0.01, respectively). Further, there was a negative correlation between supernatant IL-8 levels and T-614 concentration in groups stimulated with TNF-α ( r = −0.670, P =  0.000), but there was no significant correlation between these parameters in groups that were not stimulated with TNF-α. Conclusions In the absence or presence of TNF-α, T-614 can inhibit HAAF proliferation and promote IL-8 production in vitro; therefore, it could be used to prevent adventitial thickening of the aorta and improve vascular remodeling in inflammatory environments in vitro and might provide a new immunotherapeutic intervention for TA.

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

scholarly journals EXAGGERATION OF TYPE 2 DIABETES DUE TO CAFFEINE-NICOTINE CO-ADMINISTRATION: A STUDY IN RATS

2016 ◽  
Vol 8 (9) ◽  
pp. 277
Author(s):  
Subhash T. Kumbhar ◽  
Hemant D. Une ◽  
Anagha M. Joshi ◽  
Pralhad B. Wangikar
Keyword(s):  
Type 2 Diabetes ◽  
Blood Parameters ◽  
Diabetic Control ◽  
Serum Glucose ◽  
Significant Rise ◽  
Control Group ◽  
Diabetic Control Group ◽  
Blood And Urine Samples ◽  
Severe Tissue

<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>

scholarly journals IN VITRO EVALUATION OF THE ANTHELMINTIC ACTIVITY OF RHIZOME EXTRACTS OF CURCUMA LONGA (LINN.)

2018 ◽  
Vol 11 (12) ◽  
pp. 425
Author(s):  
Jyoti Pandey ◽  
Suman Mishra ◽  
Kamal Jaiswal
Keyword(s):  
Curcuma Longa ◽  
Anthelmintic Activity ◽  
Positive Control ◽  
Negative Control ◽  
Control Group ◽  
Phytochemical Analysis ◽  
Alternative Source ◽  
Significant Efficacy ◽  
Phosphate Buffered Saline

Objective: The current study was carried out to evaluate the anthelmintic activity of the rhizome extract of Curcuma longa as an alternative source of effective remedies for nematodiasis.Methods: The anthelmintic activity of the C. longa was assessed in vitro against Haemonchus spp., a gastrointestinal (abomasum) parasite of goats. Different concentrations of the extracts (1 mg/mL, 2.5 mg/mL, 5 mg/mL, and 10 mg/mL) in phosphate-buffered saline (PBS) were tested, and the results expressed in terms of time of paralysis (minute) and time of death (minute) of the worms. Albendazole (1 mg/mL) was used as a reference (positive control) and PBS as a control group (negative control).Results: The qualitative phytochemical analysis of the methanolic extract (ME) of the plant disclosed the presence of alkaloids, glycosides, terpenoids, flavonoids, tannins, saponins, phenol, anthraquinone, and carbohydrates; whereas, the aqueous extract (AE) showed the presence of alkaloids, carbohydrate, flavonoids, and saponins. Both ME and AE of the C. longa (rhizome) expressed significant efficacy (p≤0.05) in causing paralysis as well as the death of the worms within 12 h of exposure at all tested concentrations, as compared to the negative control. The rhizome extracts of C. longa showed dose-dependent efficacy in causing paralysis of the worm motility and the final progression to death. The results showed that the ME at 10 mg/mL was significantly more potent (p≤0.05) over the AE.Conclusions: This study concluded that the rhizome extract of C. longa exhibited potent anthelmintic efficacy against the nematode parasite, Haemonchus spp.

scholarly journals In Vivo and In Vitro Evaluation of the Protective Effects of Hesperidin in Lipopolysaccharide-Induced Inflammation and Cytotoxicity of Cell

Molecules ◽  
2020 ◽  
Vol 25 (3) ◽  
pp. 478 ◽  
Author(s):  
Rasha Al-Rikabi ◽  
Hanady Al-Shmgani ◽  
Yaser Hassan Dewir ◽  
Salah El-Hendawy
Keyword(s):  
Breast Cancer ◽  
Chromatin Condensation ◽  
Control Group ◽  
Potential Candidate ◽  
Dependent Manner ◽  
Protective Effects ◽  
Mcf7 Cells ◽  
Tnf Α

(1) Background: Plant flavonoids are efficient in preventing and treating various diseases. This study aimed to evaluate the ability of hesperidin, a flavonoid found in citrus fruits, in inhibiting lipopolysaccharide (LPS) induced inflammation, which induced lethal toxicity in vivo, and to evaluate its importance as an antitumor agent in breast cancer. The in vivo experiments revealed the protective effects of hesperidin against the negative LPS effects on the liver and spleen of male mice. (2) Methods: In the liver, the antioxidant activity was measured by estimating the concentration of glutathione (GSH) and catalase (CAT), whereas in spleen, the concentration of cytokines including IL-33 and TNF-α was measured. The in vitro experiments including MTT assay, clonogenity test, and sulforhodamine 101 stain with DAPI (4′, 6-diamidino-2-phenylindole) were used to assess the morphological apoptosis in breast cancer cells. (3) Results: The results of this study revealed a significant increase in the IL-33 and TNF-α cytokine levels in LPS challenged mice along with a considerable elevation in glutathione (GSH); moreover, the catalase (CAT) level was higher compared to that of the control group. Cytotoxicity of the MCF-7 cell line revealed significant differences among the groups treated with different concentrations when compared to the control groups, in a concentration-dependent manner. Hesperidin significantly inhibited the colony formation of MCF7 cells when compared to that of control. Clear changes were observed in the cell shape, including cell shrinkage and chromatin condensation, which were associated with a later apoptotic stage. (4) Conclusion: The results indicate that hesperidin might be a potential candidate in preventing diseases.

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