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Cyclic GMP formation in the rat pinealocyte has generally been thought to involve guanylate cyclases (GC) which are activated via GTP-regulatory proteins following beta 1-adrenergic receptor stimulation. Recent studies have also pointed to a cytosolic GC in these cells whose activity can be elevated by nitric oxide donors. Little attention has been paid to(More)
Despite enormous difficulties to induce antibodies neutralizing HIV-1, especially broadly neutralizing antibodies directed against the conserved membrane proximal external region (MPER) of the transmembrane envelope protein, such antibodies can be easily induced in the case of gammaretroviruses, among them the porcine endogenous retroviruses (PERVs). In(More)
The role of cyclic 3',5'-guanosine monophosphate (cGMP) as a second messenger in LHRH neurons is not well understood. Recent studies involving nitric oxide, a direct activator of soluble guanylate cyclase (GC), have implicated cGMP in the regulation of LHRH secretion both in vivo and in vitro. Evidence for the membrane-bound form of GC in LHRH neurons has(More)
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