Protective effects of rooibos (Aspalathus linearis), green tea (Camellia sinensis) and commercial supplements on testicular tissue of oxidative stress-induced rats

Effects of Consumption of Rooibos (Aspalathus linearis) and a Rooibos-Derived Commercial Supplement on Hepatic Tissue Injury bytert-Butyl Hydroperoxide in Wistar Rats

“…Each group, consisting of ten rats each, was maintained using standard care as described by Awoniyi et al [22]. Briefly, animals were housed in Perspex houses with stainless wire-bottomed cages in a controlled environment of 24-25°C with 12 hours light-dark cycles and 50% humidity for 1 week.…”

Effect of aqueous green tea extract on male Wistar rats reproductive hormones level

“…since the histological section of testis showed necrosis and degenerative in leydigꞌs cells with decrease in their number due to the effect of streptozotocin also atrophy of Sertoli cells (12).which lead to decrease testosterone production. The (T3) which received STZ and then treated with green tea extract ,show positive change and increase in hormones levels which are decreased in (T2) which received STZ only and this may be due to that green tea extract contents of flavonoids which are stimulates LH and FSH release from pituitary gland and then testosterone from testis (13) .…”

“…The current study revealed that the male rats in group(T1)which received green tea extract have significant increase (P≤0.05) in serum testosterone concentration in comparison with (T2,T3) and control(Table4-1).which indicate stimulation in testosterone synthesis in testes by components of green tea extract which increase the activity of enzymes which are responsible for synthesis and metabolism of lydigꞌs cells steroids by Vol. 13 No. 1 2014 stimulation of interstitial cells stimulating hormone (ICSH)which convert cholesterol to pregnonolone and then testosterone (7).Also spermatogenic stimulating hormone (FSH) or (SSH)) play a role in testosterone synthesis by increasing receptors sensitivity to (LH) or (ICSH)) which found on the surfaces of leydigꞌs cells and then increase steroidogensis and testosterone release in the seminiferous tubules (8) also the results revealed significant increase in FSH in (T1) which received green tea extract compared with other groups because of ability of green tea to stimulate synthesis of pituitary hormones since FSH play important physiological role in stimulation of sperms production (9) also play asynergestic role with testosterone in development of spermatogonia.…”

“…green tea, specifically (EGCG) may also affect aromatase the enzyme that converts testosterone to estrogen; in some studies aromatase is suppressed, in others it is Vol. 13 No. 1 2014 increased animal studies and epidemiologic studies have shown that green tea consumption is associated with lower androgen and estrogen levels in Asians.…”

Diet and lifestyle

“…30,31 Inositol -a naturally occurring carbohydrate that is found in phospholipids which function as cellular mediators of signal transduction in metabolic regulation and growth. 35 WEIGHT Does weight matter? 32 Men who are preparing to have a child and who do not have an ideal diet are recommended to take a general vitamin supplement and fish oils.…”