Stimulatory effect

Chemical iajections iato piae trees have been reported to have stimulatory effects on the natural production of resias and terpenes and may result ia high yields of these valuable chemicals. Combiaed oleoresin—timber production ia mixed stands of piae and timber trees is under development, and it appears that when short-rotation forestry is used, the yields of energy products and timber can be substantially higher than the yields from separate operations. 

Reproductive System. The primary PGs are intimately involved in reproductive physiology (67). PGE2 and PGP2Q, are potent contractors of the pregnant utems and intravenous infusion of either of these compounds to pregnant humans produces a dose-dependent increase in frequency and force of uterine contraction. PGI2 and TXA2 have mild relaxant and stimulatory effects, respectively, on uterine tissue. The primary PGs also play a role in parturition, ovulation, luteolysis, and lactation and have been impHcated in male infertility. 

Chitosan also shows immunopotentiating activity the mechanism involves, at least in part, the production of interferon-gamma and the stimulatory effect on nitric oxide production. Chitosan-based dressings also modulate peroxide production [312,314-318]. 

Takahara J, Yunoki S, Yakushiji W, et ah Stimulatory effects of gamma-hydroxybutyric acid on growth hormone and prolactin release in humans. J Clin Endocrinol Metab 44 1014-1017, 1977... 

Tomita Y, Iwamoto M, Masuda T, Tagami H (1987) Stimulatory effect of prostaglandin E2 on the configuration of normal human melanocytes in vitro. J Invest Dermatol 89(3) 299-301... 

Laticauda semifasciata venom added to the outside bathing solution of frog skin causes an increase in transmural potential difference and short-circuit current, indicating the change in the Na transport system. The venom-induced stimulatory effects can be explained as being either due to an increase in Na permeability of the outer membrane or by an increase in the activity of the Na -pump (22). 

ATANASSOVA N, MCKINNELL C, TURNER K J, WALKER M, FISHER J S, MORLEY M, MILLAR M R, GROOME N p, SHARPE R M (2000) Comparative effects of neonatal exposure of male rats to potent and weak (environmental) estrogens on spermatogenesis at puberty and the relationship to adult testis size and fertility evidence for stimulatory effects of low estrogen lew eh,. Endocrinology. 141 3898-907. 

SUGIMOTO E and yamaguchi m (2000b) Stimulatory effect of daidzein in osteoblastic MC3T3-E1 cells. Biochem Pharmacol 59, 471-5. 

YAMAGUCHI M and suGiMOTO E (2000) Stimulatory effect of genistein and daidzein on protein synthesis in osteoblastic MC3T3-E1 cells Activation of aminoacyl-tRNA synthetase. Mol Cell Biochem 214, 97-102. 

Slater, T.F. (1967). Stimulatory effects of carbon tetrachloride in vim on lipid peroxidation in rat liver microsomes. Proc. 4th FEBS Meeting, Oslo, abstract no. 216, 67. 

Two etiologic factors for BPH include advanced patient age and the stimulatory effect of androgens. 

Davis JR, Avram MJ. 1978. A comparison of the stimulatory effects of cadmium and zinc on normal and lead-inhibited human erythrocytic delta-aminolevulinic acid dehydratase activity in vitro. Toxicol Appl Pharmacol 44 181 -190. 

Epinephrine and norepinephrine have equal affinity for Pj-receptors, the predominant adrenergic receptors on the heart. However, the human heart also contains a small percentage of P2-receptors that, like Pj-receptors, are excitatory. Therefore, epinephrine is capable of stimulating a greater number of receptors and causing a greater stimulatory effect on the myocardium. 

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