Ginger extract ameliorates renal damage in high fat diet-induced obesity in rats: biochemical and ultrastructural study / El extracto de jengibre mejora el daño renal en la obesidad inducida por la dieta alta en grasas en ratas: estudio bioquímico y ultraestructural

Obesity is a modifiable risk factor for the development and progression of kidney disease. Obesity may harm kidneys in individuals without hypertension, diabetes, or pre-existing renal disease. Ginger, Zingiber officinale, has many beneficial pharmaceutical benefits. This study aimed to evaluate the Zingiber officinale protective effect against obesity complications which induced by high fat diet and caused renal dysfunctions. The study period was two months, and the experimental animals' groups were four, 80 Wistar rats were appropriated similarly 20 animals/group: control group; ginger extract group (GE); high-fat diet (HFD); and GE+HFD group. Body and fat weight, creatinine, leptin, TNF-α, total antioxidants, renal histopathological and ultrastructure were investigated. Rats in group of HFD showed a significant increase (P<0.05) in the body and fat weights, creatinine, leptin and TNF-α, and significant decrease (P<0.05) in total antioxidants (TAS). Ginger administration significantly showed the protective restoring the altered parameters. Furthermore, rats co-treated with ginger extract improved the histopathological and ultrastructural renal injury induced by obesity. The study concluded that the ginger extract used could suppress and decrease the renal damage induced by high-fat diet as it possesses potential medicinal values.

La obesidad es un factor de riesgo modificable para el desarrollo y la progresión de la enfermedad renal. La obesidad puede dañar los riñones en personas sin hipertensión, diabetes o enfermedad renal preexistente. El jengibre, Zingiber officinale, tiene muchos beneficios farmacéuticos. Este estudio tuvo como objetivo evaluar el efecto protector de Zingiber officinale en las complicaciones de la obesidad inducida por una dieta alta en grasas y las enfermedad renal. El período de estudio fue de dos meses, y los grupos de animales experimentales fueron cuatro, se asignaron 80 ratas Wistar de manera similar, 20 animales por grupo: grupo de control; grupo de extracto de jengibre (GE); dieta alta en grasas (DAG); y el grupo GE + DAG. Se evaluó el peso corporal y la grasa, creatinina, leptina, TNF-α, antioxidantes totales, histopatología renal y ultraestructura. Las ratas en el grupo de DAG mostraron un aumento significativo (P<0,05) en el peso corporal y de grasa, creatinina, leptina y TNF-a, y una disminución significativa (P<0,05) en los antioxidantes totales. La administración de jengibre mostró una protección significativa restaurando los parámetros alterados. Además, las ratas tratadas conjuntamente con extracto de jengibre mejoraron la lesión renal histopatológica y ultraestructural inducida por la obesidad. El estudio concluyó que el extracto de jengibre podría suprimir y disminuir el daño renal inducido por la dieta alta en grasas, ya que posee potenciales valores medicinales.

Moringa oleifera Lam. seed extract prevents fat diet induced oxidative stress in mice and protects liver cell-nuclei from hydroxyl radical mediated damage.

High fat diet (HFD) prompts metabolic pattern inducing reactive oxygen species (ROS) production in mitochondria thereby triggering multitude of chronic disorders in human. Antioxidants from plant sources may be an imperative remedy against this disorder. However, it requires scientific validation. In this study, we explored if (i) Moringa oleifera seed extract (MoSE) can neutralize ROS generated in HFD fed mice; (ii) protect cell-nuclei damage developed by Fenton reaction in vitro. Swiss mice were fed with HFD to develop oxidative stress model (HFD group). Other groups were control, seed extract alone treated, and MoSE simultaneously (HS) treated. Treatment period was of 15 days. Antioxidant enzymes with tissue nitrite content (TNC) and lipid peroxidation (LPO) were estimated from liver homogenate. HS group showed significantly higher (P <0.05) superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), reduced glutathione (GSH) activity, and ferric reducing antioxidant power (FRAP) compared to only HFD fed group. Further, TNC and LPO decreased significantly (P <0.05) in HS group compared to HFD fed group. MoSE also protected hepatocytes nuclei from the hydroxyl radicals generated by Fenton reaction. MoSE was found to be polyphenol rich with potent reducing power, free radicals and hydroxyl radicals scavenging activity. Thus, MoSE exhibited robust antioxidant prospective to neutralize ROS developed in HFD fed mice and also protected the nuclei damage from hydroxyl radicals. Hence, it can be used as herbal medication against HFD induced ROS mediated disorders.

Anti-Obesity Effects on Unripe Rubus coreanus Miquel Extract in High Fat Diet-Induced Obese Mice.

Aims: The objective of the present study was to evaluate the anti-obesity effects of unripe Rubus coreanus Miquel (uRC) in 3T3-L1 adipocytes and body weight, epididymal fat and perirenal fat weight, and lipid profiles in diet-induced obese (DIO) C57BL/6 mice. Methodology: The lipid accumulation in 3T3-L1 adipocytes was carried out Oil Red O staining. And uRC (50 and 100 mg/kg/day) were orally administered for 90 days from the day of feeding with high fat diet (HFD). The serum total cholesterol (TC), triglyceride (TG), high density lipoprotein (HDL)-cholesterol and low density lipoprotein(LDL)-cholesterol and glucose levels were measured using Alere cholesterol LDXⓇ system. And the serum glutamic oxaloacetic transaminase (GOT), glutamic pyruvic transaminase (GPT), blood urea nitrogen(BUN) and creatinine levels were measured using the respective kits. Results: Our results indicated that treatment with uRC dose-dependently inhibited lipid accumulation in 3T3-L1 adipocytes. Moreover, after oral administration for 12 weeks, uRC (50 and 100mg/kg/day) extract produced a significant decrease in the serum total cholesterol (TC), lowdensity lipoprotein (LDL) cholesterol, glucose and glutamic-oxaloacetic transaminase (GOT) levels of HFD-induced obese mice. Similarly, uRC extract elevated serum high density lipoprotein (HDL) cholesterol. These results suggest that uRC extract may be a useful resource for the management of obesity. Conclusion: These results suggest that uRC extract may be a useful resource for the management of obesity.