Immediately upon standing, the reduction in blood pressure is accompanied by (1) an initial increase in peripheral vascular resistance, either as part of baroreflex-mediated sympathetic activation or secondary to passive changes in vessel calibre, and (2) a secondary decrease in resistance approximately 10 s after the initial onset of hypotension (Olufsen et al. 2002).
As an alternative hypothesis it has been proposed that decreased HBV replication by limiting HSP60 release from infected hepatocytes, results in a secondary decrease in the frequency of CD4 T cells with regulatory/suppressor capacity (Tregs).
Although the exact underlying mechanisms remain unclear, the proliferation, apoptosis, and invasion of MMH-RT and HCC cells could be regulated by both blockade of aPKC ι signal pathway and the secondary decrease in aPKC ι.
Because ptiO2is closely correlated with local CBF, 15, 24, 25 we classified the ptiO2 alterations (Fig 4A) according to classifications used for CBF responses to CSDs: monophasic increases, biphasic alterations with an initial decrease and a secondary increase, and monophasic decreases.
The synovial inflammation mediated by zymosan is biphasic, with an initial peak at day 1, followed by a continuous decrease, and a secondary increase at day 14, as previously described using isotopic quantification of joint inflammation in vivo [ 43].
Survival following a secondary infection decreases while the quantity of instilled P. aeruginosa increases.
These responses are often characterized by primary decreases in important indices of cardiac and thermoregulatory function, along with secondary decreases in associated parameters.
Changes in intrathoracic and transpulmonary pressures have a secondary effect of decreasing venous return and cardiac preload, so patients also suffer the additional stress of a reduction in cardiac output during the procedure [ 47, 48].
Similar to these findings, we observed a reduction in the primordial/primary follicles in the BDE01 group and a decrease in secondary follicles in the BDE10 group.
A protocol with selection of secondary users was considered in [9], where the outage probabilities of primary and secondary systems decrease as the number of secondary transmitters increases.
