Introduction Current treatment plans for localized prostate carcinoma (PC) are based on core needle biopsies (CNB) classified using the Gleason score (GS). Recently, many institutions have started using the latest version of International Society of Urological Pathology (ISUP) guideline revision from 2014 for PC grading. Interestingly, this adoption is occurring without first understanding whet...

PURPOSE Gleason score (GS) 7 prostate cancer is a heterogeneous disease with different clinical behavior. We sought to identify genetic biomarkers that may predict the aggressiveness of GS 7 diseases. EXPERIMENTAL DESIGN We genotyped 72 prostate cancer susceptibility SNPs identified in genome-wide association studies in 1,827 white men with histologically confirmed prostate adenocarcinoma. SN...

Glutamine synthetase (GS) catalyzes ATP-dependent ligation of ammonia and glutamate to glutamine. Two mutations of human GS (R324C and R341C) were connected to congenital glutamine deficiency with severe brain malformations resulting in neonatal death. Another GS mutation (R324S) was identified in a neurologically compromised patient. However, the molecular mechanisms underlying the impairment ...

CONTEXT Prostate cancer (PC) with lymph node metastases (LN(+)) is relatively rare, whereas it is relatively common in disease with a Gleason score (GS) 8 to 10 and virtually never seen in PC with GS 6 or less. It is most variable in GS 7 PC. OBJECTIVE To determine clinicopathologic features associated with GS 7 PC with LN(+) compared with a control group without lymph node metastases (LN(-))...

G protein-coupled receptors play a pivotal role in regulating cardiac automaticity. Their function is controlled by regulator of G protein signaling (RGS) proteins acting as GTPase-activating proteins for Galpha subunits to suppress Galpha(i) and Galpha(q) signaling. Using knock-in mice in which Galpha(i2)-RGS binding and negative regulation are disrupted by a genomic Galpha(i2)G184S (GS) point...

Granulocytic sarcomas (GS) are uncommon extramedullary tumors composed of immature cells of the granulocytic or myeloid series. Treatment for GS should be directed toward the underlying hematologic disorder. There is no standard treatment. Granulocytic sarcoma (GS) is seen in ~5% of myeloid leukemia cases and represents the "tissue phase" of the disease. GS can also be seen in patients with chr...

In embryonic neural retina the enzyme glutamine synthetase [GS; L-glutamate:ammonia ligase (ADP-forming), EC 6.3.1.2] is a glia-specific differentiation marker inducible with cortisol. We show that cortisol elicits GS mRNA accumulation by stimulating transcription of the GS gene and that this stimulation requires cell contacts: in dissociated and separated retina cells GS gene transcription was...

Glutamine synthetase (GS; EC 6.3.1.2) is the pivotal enzyme of nitrogen metabolism in prokaryotes. Control of bacterial GS activity by reversible adenylylation has provided one of the classical paradigms of signal transduction by cyclic cascades. By contrast, in the present work we show that cyanobacterial GS is controlled by a different mechanism that involves the interaction of two inhibitory...

Storage of glucose as glycogen accounts for the largest proportion of muscle glucose metabolism during insulin infusion in normal and insulin-resistant subjects. Studies in first-degree relatives have indicated a genetic origin of the defective insulin activation of muscle glycogen synthase (GS) in type 2 diabetes. The aim of this study was to evaluate the relative impact of genetic versus nong...

A Butyrivibrio fibrisolvens glnA gene encoding glutamine synthetase (GS) was cloned on a recombinant plasmid pGS4 which enabled Escherichia coli glnA deletion mutants to utilize (NH4)2SO4 as a sole source of nitrogen. The nucleotide sequence of a 2423 bp DNA segment containing the GS-coding region of B. fibrisolvens was determined and the complete amino acid sequence (701 residues) was deduced....