EFFECT OF HIBISCUS SABDARIFFA LINN METHANOLIC EXTRACT ON HEART HYPERTROPHY INDEX AND PGC-1α IN OVERTRAINED RAT

Objective: Studies have shown that prolonged physical exercise increases ventricular wall mass. Physiologically, this increase is followed by an increase of mitochondrial biogenesis. However, increases of ventricular mass in some cardiovascular diseases are not followed by an increase of PPARγ coactivator-1α (PGC-1α), a marker of mitochondrial biogenesis. No data regarding cardiac PGC-1α during an excessive physical exercise program that causes pathological conditions (overtraining) are available. Thus, we aimed to determine the effect of overtraining on cardiac hypertrophy index and PGC-1α level. Furthermore, we aimed to elucidate the cardio protective effect of Hibiscus sabdariffa Linn. (HSL) administration on these cardiac parameters. Methods: Twenty-five male adult Wistar rats aged 8–10 w were randomly divided into five groups: control (C), control-HSL (C-HSL), aerobic training (A), overtraining (OT), and overtraining-HSL (OT-HSL). Treatments were conducted five times a week, for 11 w. Differences in heart mass were determined by measuring ratios of ventricular weight to body weight (hypertrophy index). PGC-1α levels were measured using an ELISA method. Results: We found that overtraining increased ventricular wall mass; however, it did not increase cardiac PGC-1α levels, whereas mild-aerobic exercise robustly increased cardiac levels of PGC-1α. Furthermore, administration of a methanol extract of HSL did not show any significant effect on cardiac mass or PGC-1α level. Conclusion: Thus, our study showed that ventricular hypertrophy elicited by overtraining conditions was not followed by an increase in cardiac PGC-1α, and administration of H. sabdariffa extract did not ameliorate this condition

EFFECT OF HIBISCUS SABDARIFFA LINN ON IL-6 AND TNF- α LEVELS IN OVERTRAINED RAT HEART

Objective: This study aims to determine the effect of Hibiscus sabdariffa Linn. (HSL) administration on the interleukin-6 (IL-6) and tumor necrosis factor α (TNF-α) levels in rat heart. Overtraining was proven to increase the IL-6 and TNF-α levels in the blood, and HSL had anti-inflammatory and anti-oxidant properties. However, no studies have been conducted on the effect of methanolic extract of HSL administration on the IL-6 and TNF-α levels in overtrained rat heart. Methods: This study used 25 male adult Wistar rats aged 8–10 w and weighing 200–250 g. The rats were randomly divided into five groups: control (C), control H. sabdariffa Linn (C+HSL), overtraining (OT), overtraining H. sabdariffa Linn (OT+HSL), and aerobic (A). Treatment was given 5 times a week for 11 w. At the end of the study, the IL-6 and TNF-α levels were measured using a standard ELISA kit. Results: IL-6 and TNF-α levels in the heart were the highest in the overtraining group. The group that received HSL administration showed the lowest TNF-α and IL-6 levels. Conclusion: HSL could be a used to protect the heart from an inflammatory state, particularly in an overtraining condition

The tolerability and efficacy of oral isotonic solution versus plain water in dengue patients: A randomized clinical trial

Background: Plasma leakage plays an important role in dengue infection, and this condition can lead to hemoconcentration, hypovolemia, and shock. Fluid replacement is the main treatment for dengue. There is a lack of evidence to support certain oral fluid therapy as a treatment for dengue patients. Objectives: The objective of this study is to evaluate tolerability and efficacy of oral isotonic solution (OIS) compared to plain water as a fluid replacement in dengue patients. Materials and Methods: A randomized, clinical trial with single-blinded groups was conducted to compare tolerability and efficacy of OIS and plain water in dengue patients. We evaluated gastrointestinal disturbances (nausea, vomiting, and bloating), body temperature, mean arterial pressure (MAP), fluid balance, hematocrit, Na+, and K+ levels. Data were analyzed with SPSS 20.0, and figures were made with GraphPad Prism version 5.01. Results: Twenty four subjects were included and divided equally into two groups. Our results showed that there are no significant differences but indicate several noteworthy trends. The intervention group (OIS) experienced less nausea, less vomiting, had positive fluid balance and higher MAP, and became afebrile faster compared to the control group (plain water). Conclusion: Although not statistically significant, this study shows the trend that OIS is well-tolerated and effective for dengue patients compared to plain water

Anti-inflammatory Effects of Hibiscus Sabdariffa Linn. on the IL-1β/IL-1ra Ratio in Plasma and Hippocampus of Overtrained Rats and Correlation with Spatial Memory

Overtraining leads to an increase in IL-1β systemically due to muscle microtrauma, which affects the hippocampus, an important structure in spatial memory consolidation. The administration of Hibiscus sabdariffa Linn is expected to decrease IL-1β and increase IL-1ra, thereby potentially preventing impairments in spatial memory consolidation. This research was an experimental study using 20 male Wistar rats. The overtraining of Wistar rats altered the ratio of IL-1β/IL-1ra in the plasma and hippocampus. Moreover, this overtraining impaired spatial memory consolidation. The methanol extract of H. sabdariffa improved spatial memory consolidation in Wistar rats and prevented impairment in spatial memory consolidation by maintaining the ratio of IL-1β/IL-1ra in the plasma and hippocampus of Wistar rats who experienced overtraining. H. sabdariffa is a potent anti-inflammatory substance that prevents impairments in spatial memory consolidation in overtrained Wistar rats

Anti-inflammatory Effects of Hibiscus Sabdariffa Linn. on the IL-1β/IL-1ra Ratio in Plasma and Hippocampus of Overtrained Rats and Correlation with Spatial Memory

Overtraining leads to an increase in IL-1β systemically due to muscle microtrauma, which affects the hippocampus, an important structure in spatial memory consolidation. The administration of Hibiscus sabdariffa Linn is expected to decrease IL-1β and increase IL-1ra, thereby potentially preventing impairments in spatial memory consolidation. This research was an experimental study using 20 male Wistar rats. The overtraining of Wistar rats altered the ratio of IL-1β/IL-1ra in the plasma and hippocampus. Moreover, this overtraining impaired spatial memory consolidation. The methanol extract of H. sabdariffa improved spatial memory consolidation in Wistar rats and prevented impairment in spatial memory consolidation by maintaining the ratio of IL-1β/IL-1ra in the plasma and hippocampus of Wistar rats who experienced overtraining. H. sabdariffa is a potent anti-inflammatory substance that prevents impairments in spatial memory consolidation in overtrained Wistar rats

Effects of Curcumin on Parameters of Myocardial Oxidative Stress and of Mitochondrial Glutathione Turnover in Reoxygenation after 60 Minutes of Hypoxia in Isolated Perfused Working Guinea Pig Hearts

In cardiovascular surgery ischemia-reperfusion injury is a challenging problem, which needs medical intervention. We investigated the effects of curcumin on cardiac, myocardial, and mitochondrial parameters in perfused isolated working Guinea pig hearts. After preliminary experiments to establish the model, normoxia was set at 30 minutes, hypoxia was set at 60, and subsequent reoxygenation was set at 30 minutes. Curcumin was applied in the perfusion buffer at 0.25 and 0.5 μM concentrations. Cardiac parameters measured were afterload, coronary and aortic flows, and systolic and diastolic pressure. In the myocardium histopathology and AST in the perfusate indicated cell damage after hypoxia and malondialdehyde (MDA) levels increased to 232.5% of controls during reoxygenation. Curcumin protected partially against reoxygenation injury without statistically significant differences between the two dosages. Mitochondrial MDA was also increased in reoxygenation (165% of controls), whereas glutathione was diminished (35.2%) as well as glutathione reductase (29.3%), which was significantly increased again to 62.0% by 0.05 μM curcumin. Glutathione peroxidase (GPx) was strongly increased in hypoxia and even more in reoxygenation (255% of controls). Curcumin partly counteracted this increase and attenuated GPx activity independently in hypoxia and in reoxygenation, 0.25 μM concentration to 150% and 0.5 μM concentration to 200% of normoxic activity