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2016 ; 60
(ä): 29418
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Long-term antihypertensive effect of a soluble cocoa fiber product in
spontaneously hypertensive rats
#MMPMID27211316
Fernández-Vallinas S
; Miguel M
; Aleixandre A
Food Nutr Res
2016[]; 60
(ä): 29418
PMID27211316
show ga
BACKGROUND AND METHODS: This study evaluates the antihypertensive effect of
long-term intake of a soluble cocoa fiber product (SCFP). Different doses of SCFP
were evaluated (200, 400, and 800 mg/kg/day) and a dose of 800 mg/kg/day of
beta-glucan 0.75 (BETA-G) was used as a standard fiber. Water, a neutral vehicle,
was used as negative control, and 50 mg/kg/day captopril was used as positive
control. Systolic blood pressure (SBP) was measured weekly by the tail cuff
method. Body weight, food, and liquid intake were also registered weekly in the
rats from 10 to 24 weeks of life. Glucose, total cholesterol, and triglyceride
levels; redox status; and the angiotensin-converting enzyme activity were also
studied in the plasma samples of these animals. RESULTS: Throughout the 10 weeks
of treatment, captopril and SCFP (400 mg/kg/day) demonstrated blood pressure
lowering effects in the spontaneously hypertensive rats (p<0.05; n=8).
Paradoxically, neither the highest dose (800 mg/kg/day) of SCFP decreased SBP nor
800 mg/kg/day BETA-G (p>0.05; n=8). When the corresponding antihypertensive
treatment, was disrupted the SBP values of the 400 mg/kg/day SCFP treated animals
returned to control values (p>0.05; n=8). In addition, the SCFP significantly
decreased (p<0.05; n=4) the glucose, cholesterol, and triglyceride levels and
also the liver and plasma malondaldehyde levels. Moreover, the SCFP slightly
increased the reduced glutathione levels in the liver. CONCLUSION: The SCFP could
be used to control the blood pressure of hypertensive subjects for a long period
of time and could improve metabolic complications associated to cardiovascular
diseases.