Male Wistar Strain Rats Research Articles

The Effect of Cinnamomum Burmanii Ethanol Extract on Isoniazid-induced Serum Levels of Serum Glutamate Piruvate Transaminase (SGPT) Wistar Strain Male Rats

Hepatotoxicity can be caused by excessive drug use, triggered by increased oxidative stress which is considered as the initial mechanism of Drug Induced Liver Injury (DILI). One of the causes of DILI is Isoniazid. One of the plants acting as a hepatoprotector in protecting liver cells is cinnamon (Cinamommum burmanii). This study aims to determine the effect of 96% ethanolic cinnamon extract as a hepatoprotector against an increase in Alanine Transaminase (ALT) levels induced by isoniazid. The parameters used to assess liver damage were rat plasma ALT. The sample used in this study was rat plasma, which was taken through the retro orbital sinus. This research is an experimental study with a sample of 25 experimental animals divided into five groups, namely negative control (K1), positive control l (K2), and experimental group with cinnamon ethanolic extract at a dose of 100 mg/kgbw (K3), 200 mg/kgbw(K4), and 400 mg/kgbw(K5). The research used a post-test-only control group design. The results were analyzed using the One-way ANOVA test followed by the post hoc Tukey test. The results proved that cinnamon ethanolic extract at doses of 100 mg/kgbw (P = 0.029), 200 mg/kgbw (P = 0.001), and 400 mg/kgbw (P = 0.000) was effective in reducing plasma SGPT levels in isoniazid-induced rats when compared with the positive control group (K2). The most effective dose was at 200 mg/kgbw (K4). Thus, this proves that all of the doses in experimental groups have a hepatoprotective effect against isoniazid-induced liver damage. Keywords: Alanine Transaminase (ALT), cinnamon ethanol extract, Drug Induced Liver Injury (DILI), isoniazid

Jatropha curcas L. Leaf Extract Effects on Blood Pressure and Lipid Levels in Hypertensive Rats with High-Fat Diet

Background: One of the main risk factors for cardiovascular diseases such as coronary atherosclerotic heart disease (CAHD) is dyslipidaemia or high levels of low-density lipoprotein (LDL) and triglycerides (TG) and low levels of high-density lipoprotein (HDL). Hypertension is also a cause of cardiovascular disease. One potential plant to lower LDL levels and blood pressure is Jatropha curcas, which is known to contain saponins, polyphenols, and flavonoids. Objective: The purpose of this study was to determine the effect of the ethanol extract of Jatropha curcas leaves (EEJCL) on blood pressure, LDL levels, and HDL levels in hypertensive rats given a high-fat diet. Methods: This study is an experimental study with a pretest-posttest control group design on male Wistar strain rats. Rats were divided into seven groups, namely the normal group, control group (induced with NaCl and given a high-fat diet), Captopril group, Simvastatin group, and EEJCL groups given doses of 1.8, 2.7, and 4.05 g/kg BW. The data obtained were analysed using the One-Sample Kolmogorov-Smirnov Test, Homogeneity of Variance, One-Way ANOVA, and Tukey Test. Results: The results showed that the administration of EEJCL could significantly lower LDL levels and blood pressure and increase HDL levels (p < 0.05) at doses of 1.8, 2.7, and 4.05 g/kg BW, and the dose of 4.05 g/KgBW was the most optimal dose. Conclusion: EEJCL has a potential for development in the treatment of hypertension and dyslipidaemia.

The nutritional value and health properties of tahini and tahini-based products

Tahini is an oily paste made from mechanically hulled, roasted and ground sesame, which is used as an ingredient in many traditional Middle Eastern recipes. It is rich in MUFAs, PUFAs, polyphenols, minerals and vitamins. Literature about the health effects of tahini consumption is limited since only two studies in human population and one study in animal model are available, so far. A 6-week supplementation with 28 g tahini in T2DM patients led to lower TG and hs-CRP and higher HDL-C levels. Additionally, consumption of 50 g tahini decreased plasma glucose and increased total phenolic content, urinary 8-iso-prostaglandin F2a and flow-mediated dilatation in healthy individuals postprandially. Moreover, in 40 male albino rats of Wistar strain, sesame butter decreased glucose and malondialdehyde and increased HDL-C and total antioxidant capacity compared to control. Hummus is a dip or spread made from boiled chickpeas, blended with tahini, lemon juice, olive oil, garlic and salt. It is rich in vitamins, minerals and different bioactive compounds including phytic acid, tannins, carotenoids, sterols, and other polyphenols. Hummus consumption has been positively related with weight management and glucose-insulin response. Halva is a low-moisture confectionery that contains tahini, sugar, citric acid and Saponaria officinalis root extract and its consumption has been found to ameliorate glycemic control. In conclusion, tahini could be beneficial regarding diabetes-induced inflammation, oxidative stress and endothelial function. Since more research is needed in order to confirm the aforementioned properties, tahini and tahini-based products seem to be a healthy choice, aiming at promoting healthy dietary patterns.

Androgenic Properties and Subchronic Toxicity of the Aqueous Extract of Pycnanthus angolensis (Welw.) Warb. Wood (Myristicaceae)

Aims: Pycnanthus angolensis (Welw.) Warb. also known as “Etengué” in the Baka language, is a medicinal plant used by the Baka Pygmies of Cameroon to treat erectile dysfunction. This study aimed to evaluate the androgenic activity and subchronic toxicity of the aqueous extract of Pycnanthus angolensis wood.
 Study Design: Experimental design.
 Place and Duration of Study: Laboratory of Biochemistry, Faculty of Medicine and Biomedical Sciences, University of Yaoundé I, between November 2022 and October 2023.
 Methodology: Twenty-five male Wistar strain rats were divided into 5 groups of 5 rats each including a positive control group that received testosterone enanthate (5 mg/kg) intramuscularly once a week; a normal control group that received distilled water (10 ml/kg) and three test groups which received 134 and 267 and 533 mg/kg of the aqueous extract of Pycnanthus angolensis daily per os. On the 29th day, the animals were killed, and several biochemical parameters were assessed for androgenic properties.
 Results: At a dose of 134 mg/kg, the extract significantly increased (p<0.05) the levels of testicular cholesterol, testosterone and serum prostatic acid phosphatase activity compared to those of the normal control. A toxicity study showed that at doses of 134 and 267 mg/kg, the extract did not induce any significant variation (p>0.05) in the creatinine level, but a significant reduction (p<0.05) in of aspartate and alanine aminotransferase activities was recorded. Histopathology revealed destruction of testicular spermatozoa at a dose of 533 mg/kg compared to that of the controls.
 Conclusion: These results showed that at a dose of 134 mg/kg, the aqueous extract of Pycnanthus angolensis (Welw.) Warb. wood is capable of stimulating the production of androgens and is tolerated by the rat's body. Our results justified the traditional use of this plant for the treatment of male infertility and erectile dysfunction.

The Evaluation of the Acute Toxicity Of MCH2 Syrup Formulations on the Liver Organs of Male Wistar Strain Rats Entailed Histopathological Observations and the Examination of Symptoms of Toxicity

The Evaluation of the Acute Toxicity Of MCH2 Syrup Formulations on the Liver Organs of Male Wistar Strain Rats Entailed Histopathological Observations and the Examination of Symptoms of Toxicity

The Effect of Sapodilla Leaf Extract on IL-6 and TGF- β Levels of Skin Tissue (Experimental Study on Male White Rats of Wistar Strain Exposed to UV Light)

Excessive exposure to ultraviolet light affects cell and tissue homeostasis which has a damaging effect on DNA characterized by the formation of reactive oxygen species (ROS). Inflammation due to UV rays is the main cause of oxidative stress in the skin. Healing of wounds caused by sunburn through a complex process consisting of inflammatory cell infiltration, cell proliferation, and tissue remodeling phases to restore normal skin integrity and function, rapid healing and epithelialization to prevent infection and minimize functional and aesthetic complications. The researchers aimed to see the effect of administering sapodilla leaf extract cream (Manilkara zapota) on IL-6 and TGF-β levels in Wistar rats with sunburn. Experimental study with a post test only control group design using a total of 30 mice as experimental animals, divided randomly into 4 treatment groups consisting of a control group, a placebo group, a sapodilla leaf cream group with a dose of 25% and a 50% cream group. Mouse skin tissue exposed to UV was analyzed using the ELISA method to determine the levels of IL-6 and TGF-β. There was no significant difference in the average IL-6 levels between treatment groups with the one way anova difference test, a p value of 0.25 (p0.05), there was a significant difference in the average TGF-β levels for each group with a p value of 0.005 (P0.05), Manilkara zapota leaf extract cream had a significant effect on TGF-β levels at a dose of 50%. Administration of Manilkara zapota leaf extract cream has a dose-dependent effect on IL-6 and TGF-β levels in skin tissue of mice exposed to UV.

Effect of Giving Black Seed (Nigella Sativa L) On Il-10 Levels, And CRP Levels (Experimental Study on Wistar Strain Male White Rats Induced By A High Fat Diet)

Dyslipidemia is a disease that often occurs in Indonesia. The impacts of this disease include inflammation and various types of cytokines. This study aimed to determine the effect of Black Seed on Interleukin 10 levels and CRP levels in rats induced by a high-fat diet. This research is a posttest-only control group type of research. Twenty-five male white Wistar rats were taken as samples and divided into 5 groups: K0 (pellets and water), K – (high-fat diet), K + (high-fat diet + simvastatin 1.8 mg/day), P1 (high-fat diet + Black Seed 3 ml/KgBB), P2 (high-fat diet + black seed 4 ml/KgBB). The data required in this study was obtained through the ELISA test. The collected data was analyzed using one-way ANOVA and post hoc LSD test. From the results of the analysis carried out, it was found that (1) the difference in mean IL-10 levels between groups was significant with a p-value <0.05; (2) The difference in average CRP levels between groups where K0, K-, and P1 is significant, while between K (+) and P2 is not significant with a p>0.05. Administration of Black Seed affected IL-10 levels and CRP levels in white mice induced by a high-fat diet.

Effect of different melatonin-rich extract of Emprit ginger (Zingiber officinale var. amarum) doses on biochemical parameters in streptozotocin-induced diabetic rats

Background/Aim: Emprit ginger (Zingiber officinale var. amarum) is an Indonesian natural plant with various bioactivities, including antidiabetic properties. Several studies have shown that bioactivities can be attributed to the presence of flavonoids and also melatonin which playing a role in carbohydrate metabolism and blood sugar levels regulation. Ginger also has an effect on the lipid profile in studies in experimental animals. Therefore, this study aimed to determine the in vivo antidiabetic activity of melatonin-rich extract of Emprit ginger using blood sugar and lipid profiles parameters. Methods: The study procedure comprised 30 male white rats of Wistar strain, which were divided into 5 groups. These included: I - K-: negative control; II - K+: injected with streptozotocin (STZ) - nicotinamide (NA); III - P1: given STZ-NA + 100 mg/kg body weight (BW)/day ginger extract; IV - P2: given STZ-NA + 200 mg/kg BW/day ginger extract; and V - P3: injected with STZ-NA + metformin 300 mg/kg BW/day. In addition, the treatment was carried out for a total of 21 days, followed by the measurement of random blood sugar (RBS) levels and lipid profiles. Results: The highest pre-treatment RBS, triglyceride, cholesterol, HDL and LDL levels were 426.8 ± 55.8 mg/dL (P2), 142 ± 39.8 mg/dL (P2), 130.8 ± 21.7 mg/dL (K+), 53.4 ± 4.92 mg/dL (P1) and 61.67 ± 17.69 mg/ dL (K+), respectively. The results showed that the largest decrease in RBS was obtained in P3 by 262.8 ± 70.6 mg/dL, while P2 experienced the highest decrease in triglyceride levels by 83.66 ± 52.04 mg/dL. In addition, the largest decrease in cholesterol was in P3 by 50.2 ± 26.30 mg/dL, with P1 possessing the highest reduction in HDL by 15.4 ± 15.88 mg/dL. In terms of LDL, the largest decrease was obtained in P3, 20.44 ± 16.68 mg/dL. Based on the results, changes in biochemical parameters levels between all groups showed significant differences except for HDL. Conclusion: STZ-NA injection caused an increase in RBS and cholesterol in rats. Administration of melatonin-rich ginger extract led to a decrease in RBS, cholesterol and LDL and was more effective in the group given metformin. Melatonin-rich ginger extract at a dose of 200 mg/kg BW/day was more effective in reducing triglycerides compared to other clinical parameters.

Effects of high dose of long-term ethanol exposure on oxidative damage of spleen in experimental rat model

Background: Alcoholic beverages have been used in human societies at least since the beginning of recorded history. Research has demonstrated sufficiently to our understanding of the relation of drinking to specific disorders, and has shown that the relation between alcohol consumption and health outcomes is complex and multidimensional. Methods: In this study we had demonstrated the role of oxidative stress in long-term ethanol induced spleen damage in 16-18 week-old male albino rats of Wistar strain weighing 200- 220 g. Results: Ethanol exposure (1.6 g ethanol/ kg body wt/ day for 12 weeks) caused significant decrease in reduced glutathione (GSH) concentration and activities of superoxide dismutase and glutathione reductase; while significant increase in thiobarbituric acid reactive substances (TBARS) content and glutathione s-transferase activity in spleen homogenate. Conclusion: Our study revealed that higher doses of ethanol (1.6 g/ kg body weight/ day) for a long period caused significant oxidative stress in the spleen. Intermediates of oxygen reduction may be associated with the development of ethanol induced organ damage.

Gastroprotective and hepatoprotective effects of the fruit peels extract of a hybrid plant Citrus x paradisi Macfad. (Rutaceae) against ethanol-induced-gastric ulcer and paracetamol-induced-hepatitis on Wistar strain male rats.

Introduction: Diseases of the digestive system and liver are the leading cause of hospitalization worldwide, at around 12.2%. In particular hepatotoxicity which affects more than fifty million people worldwide and peptic ulcer disease. Moreover, the therapies used for the treatment of these diseases are not only very expensive but also present numerous
 
 undesirable side effects (hypersensitivity, arrhythmia, impotence, hematopoietic changes). The use of medicinal plants and herbal medicine probably make a considerable contribution. And the present study demonstrates it.
 Material and Method: 200 and 400 mg of crude ethanolic fruit peel extract (EFPE) were administered by nasogastric tube to two groups of G and H rats consisting of 3 batches of 5 rats each. The 3 batches representing the neutral, negative and positive controls. Then, gastric ulcer and hepatitis was induced in rats according to the Kanbur and al.’s procedures. Results and Discussion: The percentages of protection of the gastric mucosa are 6 - 7 times higher than those of rats pretreated with distilled water and close to nearly 90% than that of omeprazole at 20 mg / kg. At equal concentrations (200 mg / kg bw) the gastroprotective effect of the FFPE therefore appears to be 1.2 greater than that reported by Selmi et al., 2017 [5] on the fruit peels of the parent C. sinensis. The lowest serum transaminases (AST, ALT, ALP) levels were observed in rats pretreated with EFPE at 200 mg / kg bw. Oral administration of 200mg/kg bw of the EFPE equally twice that of silymarin would lead to a decrease in transaminases comparable to that of silymarin administered at 100 mg / kg used as a reference sample. The hepatoprotective effect of EFPE are similar with those observed on seeds by Udom et al., 2018 [6]. These results are consistent with macroscopic and histological examination of the damaged tissue. Conclusion: The EFPE of Citrus x paradisi has gastroprotective and hepatoprotective effects which would be comparable to those of Omeprazole and Sylmarin orally administered.

The Effect of Topical Gel Secretome Hypoxic Mesenchymal Stem Cells (SH-MSCs) on IL-6 and TGF- β Gene Expression (Experimental Study in Male Wistar Alopecia-Like Rat Models Induced by Fluconazole)

Alopecia induced by the accumulation of reactive oxygen species (ROS) stimulates changes in the immune and neuroendocrine systems. Hair follicles have dermal papillary cells (DPCs) that bind to corticotropin-releasing factor (CRF) receptors. Research shows that transforming growth factor (TGF-β) is one of the expressions that can be an indication of the influence of CRF. The effect of CRF itself is to cause hair loss. The purpose of this study was to determine the Secretome of Hypoxia Mesenchymal Stem Cells (SH-MSCs) against IL-6 expression and TGF-β expression. This study used experimentally in vivo with the Post Test Only Control Group Design method. The subjects of this study were male rats of Wistar strain which were divided into 4 treatments consisting of 1 healthy group, 1 negative control group, 1 treatment group with SH-MSCs dose 10% in a dose of 200 mg/rat/day gel, and 1 more treatment group with SH-MSCs dose 20% in a dose of 200 mg/rat/day. On the 21st day, IL-6 expression and TGF-β expression were examined. Data were analyzed using the One-Way ANOVA Test and the Kruskall-Wallis Test to determine the effect of each group. The One-Way ANOVA test showed the results of IL-6 expression (p = 0.000) showed a significant difference (p < 0.05) and the Kruskall-Wallis test of TGF-β expression (p = 0.000) with SH-MSCs dose 200 was a significant difference (p < 0.05). The administration of 10% and 20% doses of SH-MSCs in 200 mg gel may decrease IL-6 expression. Dosed SH-MSCs 20%increased TGF-β expression in alopecia-like rats. The development of the use of SH-MSCs is expected to be an alternative to alopecia therapy that is more beneficial and safe for the body.

Role Of Selenium and Vitamins E And C In Combating Cadmium Bioaccumulation in The Selected Tissues of Rats: A Therapeutic Approach

The aim of the present investigation is to check the therapeutic role of selenium (Se) and vitaminE and C on cadmium (Cd) induced bioaccumulation in liver, kidney and testis of Cd treated rats. Wistar strain male albino rats were treated with cadmium chloride at a dose of 1/10th of LD50 /48h i.e. 22.5 mg/Kg body weight for 7, 15 and 30 days (d) time intervals. Then 15d Cd treated rats were divided into two groups. Group I supplemented with Se (1mg/kg body weight) and II group received combination of Se, vitamins E (300mg/kg) and C (200mg/kg) and observed for 7, 15 and 30days. After specific time intervals, rats were decapitated and tissues such as liver, kidney and testis were isolated and used for the estimation of Cd bioaccumulation levels by using Atomic Absorption Spectrophotometer (AAS – Schimadzu AA6300). There was a significant elevation in Cd concentrations in the test tissues with increased period of Cd treatment. Maximum Cd accumulation was found in 30d Cd treated rat kidney (42.80±0.30μg / gm). However, there was a significant reduction in Cd bioaccumulation with Se and vitamin E and C supplementation. Maximum decrease in Cd accumulation was found in 30d rat kidney (5.04 ±0.08μg / gm) supplemented with the combination of Se andvitamin E and C. Our findings clearly envisage that combined supplementation of Se and vitamin E and C is more effective in reducing the Cd body burden when compared to the individual mode of supplementation.

Age dynamics of strain differences in the morphofunctional state of pancreatic beta- and amylin-producing cells in SHR and Wistar rats

Large-scale epidemiological studies have shown that cardiac pathology and progressive atherosclerosis in patients with diabetes mellitus occurred already at the stage of prediabetes. Obesity and insulin resistance affect cardiometabolic health due to pleiotropic effects of insulin. Despite the vast range of research, some aspects remain hidden links in the overall pathogenesis of metabolic and hemodynamic disorders. The aim of the work was to study the morphofunctional state of pancreatic islets (PIs), beta- and amylin-producing cells in male rats of Wistar strain (normotensive) and SHR (with spontaneous development of hypertension) in age dynamics. Materials and methods. The study was carried out using 38 male Wistar rats and SHRs aged 7 and 24 months. Non-invasive blood pressure (BP) detection procedures were done using the BP-2000 Blood Pressure Analysis System. The morphofunctional state of PIs was examined in serial 5-μm thick pancreatic tissue sections. Beta- and amylin-producing cells were detected after histological preprocessing and the use of monoclonal FITC-conjugated antibodies. Image file processing was done via ImageJ software (National Institutes of Health, USA). Levels of glycemia were monitored with a SUPER GLUCOCARD-II glucometer. Results. SHRs were hyperglycemic both at 7 and at 24 months, 8.41 ± 0.15 mmol/l and 8.90 ± 0.14 mmol/l, respectively, with elevated BP, 155 ± 5 / 80 ± 5 mm Hg and 165 ± 5 / 90 ± 5 mm, respectively. Old SHRs developed PI hypertrophy mainly associated with the increased number and percentage of beta-cells, apparently in response to hyperglycemia. Both in the PIs of adult and old SHRs, the number of amylin-producing cells was lower while the content of amylin was higher than those in the age-matched Wistar rats. Conclusions. Male SHRs are characterized by a persistent increase in blood pressure and abnormalities of carbohydrate metabolism already at adult age, one of the manifestations of which is hyperglycemia worsening with age. Chronic hyperglycemia in SHRs due to the higher insulin requirement finds its expression in low content of this hormone in the islets at adult age and decreased its content in beta-cells in old animals.

Biochemical and histological study of spermatogenic activity in male albino rats treated with Cantharis Q

Cantharidin is a bioactive toxin produced by the blister beetles commonly called Spanish fly. This natural compound is a bicyclic monoterpene (C10H12O4 ) that has clinical application as an anti-inflammatory, antiviral as well as antitumor agent and has been widely used to treat a variety of skin-related diseases. There are several reports of consumption of dried blister beetles and their traditional formulations due to a long history of the supposed aphrodisiac property of cantharidin. The present study, therefore, aimed at investigating the biochemical and histological changes in the testes of male albino rats of Wistar strain due to oral intake of Cantharis Q, a crude alcoholic extract of blister beetle Lytta vesicatoria used as mother tincture and as diluted potentized form in homeopathy. The experimental rats were given Cantharis Q dosage of 500 µg/Kg body weight for 60 days and the subsequent autorecovery was also studied after 30 days without treatment. The treated rats showed a significant decrease in the weight of testis, seminiferous tubular diameter and sperm count. Activity of testicular acid phosphatase (ACP), alkaline phosphatase (ALP), hyaluronidase (HL) enzyme and content of cholesterol, total protein, DNA and RNA decreased significantly whereas activity of beta-glucuronidase (BG) enzyme and glycogen was significantly increased. Spermatogenesis stages VIII, IX and X showed sloughing of round spermatids into the tubular lumen. The animals kept for autorecovery showed only partial improvement. Thus, it could be concluded that the treatment had a negative impact on the physiological function of testis of albino rat causing detrimental effects on the spermatogenic activity

Toxicity Test on the Combination of Caesalpinia sappan and Zingiber officinale in Rattus norvegicus Induced by Complete Freund's Adjuvant

Highlights:1. This study determined the toxic effects of combining Caesalpinia sappan and Zingiber officinale extracts, aspeople need to be aware of the potential side effects of these common herbal remedies for the treatment ofrheumatoid arthritis.2. The combination of Caesalpinia sappan and Zingiber officinale extracts is efficacious and non-toxic as an antiarthritis treatment, hence, the ingredients can be upgraded to standardized herbal medicines andphytopharmaceuticals. Abstract Sappanwood (Caesalpinia sappan) and red ginger (Zingiber officinale) are plant species that have been studied for theirefficacy in treating inflammation related to rheumatoid arthritis. This study aimed to examine the effects of combiningsappanwood and red ginger in order to determine the potential toxicity of the herbal extracts in medicine. The toxicitytesting was carried out in vivo using 32 Wistar strain male white rats (Rattus norvegicus) grouped into eight groups of four.The rats were injected with complete Freund's adjuvant to induce a chronic inflammatory effect. The eight groups consistedof the negative control group, the positive control group, the normal group, and five treatment groups. This study wasconducted by observing the animals for toxic symptoms and death to determine the safety of the extracts and drugs. Theobservation results were analyzed using a one-way analysis of variance (p<0.05). The analysis results showed that weightgain and relative organ weight among the groups had no significant differences (p>0.05). Microscopic examination of theorgan preparations observed under a light microscope revealed no significant changes or adverse effects in rats treated withthe extracts or drugs. In conclusion, a combination of sappanwood and red ginger ethanol extracts administered orally hasno toxic effect in rats injected with complete Freund's adjuvant.

Uji Efek Nefroprotektif Ekstrak Etanol Daun Kari (Murraya Koenigii (L.) Spreng) Terhadap Kadar Blood Urea Nitrogen (BUN) Dan Kreatinin Tikus Putih Jantan Galur Wistar (Rattus Norvegicus) Yang Diinduksi Doksorubisin

Cancer is one of the leading causes of death in the world. A highly-effective therapy in cancer is chemotherapy using doxorubicin. Sustainable doxorubicin usage could damage the kidneys due to Reactive Oxygen Species (ROS) formation that could be seen by increased levels of BUN and creatinine. Curry leaves are commonly found in Aceh and has high antioxidant rate so it has the potential to suppress kidney damage due to the use of doxorubicin. These antioxidants could be useful for decreasing levels of BUN and creatinine. The purpose of this research is to test the nephroprotective effect of Ethanol Extract of Curry Leaves (EECL) to prevent kidney failure on doxorubicin induced wistar strain male white rats. The method of this research is experimental with post test only control group design. The number of samples used was 25 rats which were divided into 5 groups. Positive control group (given vitamin E), negative control group (given CMC-Na 0,5%), and treatment groups (given EECL at doses 50 mg/kgBB, 100 mg/kgBB, and 200 mg/kgBB) orally for 7 days straight and doxorubicin 15 mg/kgBB was induced on the 8th day. The results show that the BUN levels in the treatment group given EECL at doses 50 mg/ kgBB and 100 mg/kgBB are close to the positive control group, but the creatinine levels are still significantly different. Meanwhile, the treatment group that was given EECL at dose 200 mg/kgBB, both BUN and creatinine levels, are close to the positive control group. The conclusion of this study is that EECL has a nephroprotective effect on doxorubicin induced rats and the most effective dose is 200 mg/kgBB.

Antihyperglycemic Karamunting Leaf Extract (Rhodomyrtus tomentosa (Aiton) Hassk) in Alloxan Induced Wistar Strain Male Rats

Diabetes Mellitus (DM) is an endocrine disease characterized by an abnormal increase in blood glucose levels. Prevention of DM complications could be avoided by using antihyperglycemic therapy. Thus, may increase the risk of adverse effects. The discovery of antihyperglycemic compounds from medicinal plants was carried out to avoid adverse effects. One of the medicinal plants that has antihyperglycemic potential is karamunting (Rhodomyrtus tomentosa (Aiton) Hassk). This study was aimed to examine the antihyperglycemic activity of karamunting leaf extract and the compounds present in the extract with the highest activity. Activity test was carried out in vivo using Wistar strain male white rats. Extraction was carried out by multilevel maceration using n-hexane, ethyl acetate, and 96% ethanol as solvents. There were 6 treatment groups, namely the normal group, positive control, negative control, n-hexane extract, ethyl acetate extract, and 96% ethanol extract. The positive control was glibenclamide and the negative control was 0.5% Na CMC. Identification of the compounds contained in the extract was carried out by phytochemical screening. Statistical data analysis using one way ANOVA. The results showed that 96% ethanol extract of karamunting leaves had the best activity in reducing blood glucose levels with a decrease of 40%. The statistical test results showed a significant difference between each treatment group (p<0.05). In 96% ethanol extract of karamunting leaves, flavonoids, phenols, tannins and saponins were identified. Keywords: Extract, Hypoglicemia, Karamunting

Skin Flap's Viability Improvement after Erythropoietin Injection on Extended Random Skin Flap Model in Wistar Rats

Introduction: Wound defect closure using flaps has advanced in many areas, as have the methods to increase its viability. Erythropoietin (EPO) is a glycoprotein produced by the kidney for erythrocyte production. EPO has the ability to stabilize vascular integrity, increase endothelium cells, protect cells from ischemia and apoptosis, stimulate angiogenesis, and reduce inflammation. The aim of this study is to evaluate flap viability for an extended random skin flap. Methods: In a randomized posttest only control group design experiment, thirty male Wistar strain rats (Rattus norvegicus) divided into groups of ten rats with flap model of 2 cm × 8 cm were injected with EPO in the middle of the flap. Group 1 was injected with EPO 50 IU, Group 2 with EPO 100 IU, and Group 3 is the control group with no injection. Flaps were evaluated on the 7th day to check the necrotic area using imitoMeasure®. Specimens were taken in the middle of the flap to evaluate the capillary vessels, and histopathology examinations were performed with hematoxylin and eosin staining. Capillary vessels and necrotic area data were analyzed using ANOVA. Results: The amount of capillary vessels in the random skin flap showed significant differences between 50 IU Group, 100 IU Group, and control group (P = 0.000). The Necrotic area measured in the random skin flap also showed significant differences between 50 IU group and control group (P = 0.020), whereas, 100 IU group compared to the control group showed no significant difference (P = 0.680). Conclusion: EPO 50 IU injection showed significant differences compared to control and EPO 100 IU injection for maintaining flap viability. EPO could be a modality to enhance flap viability.

The effect of Varenicline on Betel nut dependence in Albino wistar rats

Betel nut is one of the most common addictive substance. Not many studies have explored the potential of varenicline as cessation therapy. We studied the benefits of varenicline in reducing the reward effects in rat model. Forty male albino rats of wistar strain weighing 150-250grams were used in the present study. Rats were randomized to 5 groups of 8 rats each to: Control; Betel nut group; Varenicline at doses of 0.5, 1 and 2mg/kg along with betel nut. Conditioned Place Preference (CPP) model was used for studying the drug seeking behavior. The CPP score was compared between the groups. Results showed a significant increase in body weight of rats at the end of the study compared to baseline in betel nut and varenicline groups. Compared to betel nut group (656.25±55) there was significant decrease in CPP score in Varenicline group at 0.5mg/kg (97.5±48); 1mg/kg (18.75±20) and at dose of 2mg/kg (-60±6). The study demonstrates the benefits of varenicline in betelnut dependence. There was dose dependent decrease in betel nut seeking behavior with varenicline in rat model of drug dependence.

The effects of anterior bite plane on temporomandibular joint and mandibular morphology

ObjectivesAn anterior bite plane (ABP) is an orthodontic appliance that prevents posterior teeth from making contact. This appliance's functional concept is to reduce muscle activity, overcome deep overbite, and temporomandibular joint (TMJ) disorders (TMD). However, ABP treatment for malocclusion frequently results in unfavorable reversible and irreversible long-term effects. This problem presents difficulties for dentists in developing an appropriate treatment modification plan in order to achieve the best results. As a result, the goal of this study is to observe the effects of different ABP types on the TMJ and mandible. Materials and MethodsThirty-six three-month-old male Wistar strain rats were divided into three groups: control, upper flat, and upper-lower inclined ABP. The overbite and body weight were measured. TMJ was examined histologically using hematoxylin and eosin (HE). To observe the entire mandibular bone in response to ABP, mandibular planes and angulations were measured. ResultsAfter 7 days, the upper-lower inclined ABP group has significantly lower body weight than the control group. On days 7 and 14, overbite was significantly reduced in both the upper flat and upper-lower inclined ABP groups. The superficial layer of the condyle was depleted in both ABP groups, according to HE analysis. Mandibular angle analysis revealed that the upper-lower inclined ABP group had a greater incisal and ramus angle. Furthermore, lower incisor (Li)-condyle (Co) mandibular points increased significantly more in the upper-lower inclined ABP group than in the control group. ConclusionAccording to this study, various forms of ABP may have an impact on the TMJ and mandibular morphology, specifically on the length, angulation, and superficial surface of the condyle.