{"id":210,"date":"2019-01-01T09:01:41","date_gmt":"2019-01-01T08:01:41","guid":{"rendered":"http:\/\/bioactivecompoundlibrary.com\/?p=210"},"modified":"2022-01-11T17:10:37","modified_gmt":"2022-01-11T09:40:37","slug":"speculate-improbable-high-level-genetic","status":"publish","type":"post","link":"http:\/\/bioactivecompoundlibrary.com\/index.php\/2019\/01\/01\/speculate-improbable-high-level-genetic\/","title":{"rendered":"We speculate that this is improbable given the high level of genetic"},"content":{"rendered":"

Despite the clear importance of C9 in pregnancy maintenance, changes in the C9 system during human pregnancy are not completely understood. A small number of studies have addressed changes in C9 levels during human pregnancy. One study indicated that pregnant women have increased plasma levels of the anaphylatoxins C3a, C4a, and C5a. However, inflammatory effects of the anaphylatoxins were not measured, uncleaved C9 factors were not quantitated,Geniposidic acid<\/a> and the pregnant women sampled were not synchronized in gestation date. Thus, time-dependent effects on C9-function may not have been evident. One of the only studies of longitudinal effects of pregnancy on C9 demonstrated a drop in serum C3 early in pregnancy, with a return to control or slightly elevated levels by second and third trimester; this same study showed no difference in pathogen-independent C9-mediated hemolysis during these phases of pregnancy. Lastly, a small study found no significant changes in plasma C3 and C4 in individuals over the course of T3, though plasma C3 levels trended downward over the course of T3 in the study samples as a whole. This study, however, included no comparisons to samples from non-pregnant controls. Most importantly, none of these prior studies used functional readouts for C9 control of infection. Thus,GYKI-52466<\/a> though past human studies have generated somewhat inconsistent results, the accepted paradigm is that pregnancy is, paradoxically, a state of C9 activation. There are several possible reasons why our findings may seem divergent from this model. First, it is possible that C9 regulation during AGM pregnancy is distinct from that during human pregnancy. We speculate that this is improbable given the high level of genetic relatedness between humans and old world monkeys and that the C9 system is highly evolutionarily conserved. More likely, the differences in study design and readouts between human studies and our work may present different aspects of complex C9 regulation during pregnancy. We found decreased neutralization capacity and serum C9 protein concentrations in late T3 of AGM pregnancy. Studies indicating increased levels of C9 proteins during human pregnancy have largely focused on mid-T1 to mid-T3. Even so, several studies have shown trends of decreasing C3 and\/or C4 late in pregnancy, which support our finding, albeit with a small number of samples that precludes conclusive analysis.<\/p>\n","protected":false},"excerpt":{"rendered":"

Despite the clear importance of C9 in pregnancy maintenance, changes in the C9 system during human pregnancy are not completely understood. A small number of studies have addressed changes in C9 levels during human pregnancy. One study indicated that pregnant women have increased plasma levels of the anaphylatoxins C3a, C4a, and C5a. However, inflammatory effects… Continue reading We speculate that this is improbable given the high level of genetic<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"http:\/\/bioactivecompoundlibrary.com\/index.php\/wp-json\/wp\/v2\/posts\/210"}],"collection":[{"href":"http:\/\/bioactivecompoundlibrary.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/bioactivecompoundlibrary.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/bioactivecompoundlibrary.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/bioactivecompoundlibrary.com\/index.php\/wp-json\/wp\/v2\/comments?post=210"}],"version-history":[{"count":1,"href":"http:\/\/bioactivecompoundlibrary.com\/index.php\/wp-json\/wp\/v2\/posts\/210\/revisions"}],"predecessor-version":[{"id":211,"href":"http:\/\/bioactivecompoundlibrary.com\/index.php\/wp-json\/wp\/v2\/posts\/210\/revisions\/211"}],"wp:attachment":[{"href":"http:\/\/bioactivecompoundlibrary.com\/index.php\/wp-json\/wp\/v2\/media?parent=210"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/bioactivecompoundlibrary.com\/index.php\/wp-json\/wp\/v2\/categories?post=210"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/bioactivecompoundlibrary.com\/index.php\/wp-json\/wp\/v2\/tags?post=210"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}