Ganka Ivanova

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The CLOCK transcription factor is a key component of the molecular circadian clock within pacemaker neurons of the hypothalamic suprachiasmatic nucleus. We found that homozygous Clock mutant mice have a greatly attenuated diurnal feeding rhythm, are hyperphagic and obese, and develop a metabolic syndrome of hyperleptinemia, hyperlipidemia, hepatic(More)
Previous studies have indicated the presence of a putative tumor suppressor gene on chromosome 13q14, commonly deleted in patients with B-cell chronic lymphocytic leukemia (B-CLL). We have previously defined a minimally deleted region of 130 kb centromeric to the marker D13S272, and constructed a PAC and cosmid contig encompassing this area. In the present(More)
In experiments on 135 albino rats, present-day techniques were used to examine the time-course of hepatic destructive and reparative processes during various courses of acute experimental peritonitis (AEP). The magnitude of destructive changes in the liver was found to be directly related to the severity of peritoneal lesion, degree of intoxication, and(More)
Structural pathology and hemodynamics in the livers of 110 white rats were studied histologically, electron microscopically and histoautoradiographically during 5 days since the onset of acute experimental peritonitis. This was accompanied with distinct structural and functional derangement of histohematic barrier along with hepatic hemodynamic disturbances(More)
The immune system (IS) is known to be o n the whole an open, steady-state system. Its self-maintenance is realized by continuous processes of dying, proliferation, and migration of immunocompetent cells. The unequal contribution of these processes in response to various stimuli (antigens, hormones, toxins, etc.) may lead either to an enhancement of the(More)
The localization of ribonucleases in Aspergillus clavatus mycelium was studied using differential centrifugation of mycelial homogenates, preparation of protoplasts, by cytochemical and immunochemical studies. The RNase activity was represented mainly by guanylic and nonspecific RNases and was not associated with the intracellular structures. The(More)
DL-1-(2,3-Dihydroxypropyl)thymine was prepared by Hilbert-Johnson reaction of 2,4-dinethoxy-5-methylpyrimidine with allyl bromide followed by the osmium tetroxide catalyzed hydroxylation of the l-allyl-4-methoxy-5-methylpyrimidin-2-one obtained as an intermediate. The D-glycero enantiomer, R-1-(2,3-dihydroxypropyl)thymine and the corresponding 1-substituted(More)