Evidence is presented that heparin pretreatment produces protective effects on myocardial tissue distinct from its anticoagulant activity. The present study examines the ability of heparin sulfate and N-acetyl heparin (a derivative of heparin devoid of anticoagulant effects) to protect the heart from injury associated with global ischemia and reperfusion. Male New Zealand White rabbits were adm...

We examined the effects of increasing acetylcarnitine and acetyl-CoA availability at rest, independent of pyruvate dehydrogenase complex (PDC) activation, on energy production and tension development during the rest-to-work transition in canine skeletal muscle. We aimed to elucidate whether the lag in PDC-derived acetyl-CoA delivery toward the TCA cycle at the onset of exercise can be overcome ...

Rat liver ribosomes have been acetylated both in vivo and in vitro. The in vivo acetylation of ribosomes occurred within 5 min of the administration of t3H]acetate, and 70 to 80% of the incorporated radioactivity remained in the ribosomal proteins after removal of RNA with urea-LiCl. Following treatment of the acetylated ribosomai proteins with ethanol-ether, RNase, and 0.5 M KCl, to remove pos...

abstract background: sperm cells extracted from testes (tese) have poor chromatin quality and motility. various substances are used in the laboratory to increase sperm motility and improve the art outcomes; however, there are few research which considered improving both sperm motility and chromatin quality. objective: the aim of this investigation was to evaluate the improvement of the testicul...

background acute pancreatitis is the most common serious complication of endoscopic retrograde cholangiopancreatography (ercp) that can occasionally be fatal. multiple drugs have been examined for the prevention of this side effect, with generally uncertain results. this study is an effort to prevent this complication by the use of oral n-acetyl cysteine (nac). methods a total of 100 patients w...

laryngopharyngeal reflux (lpr) is a variant of gastroesophageal reflux disease (gerd) in which the stomach contents go up into the pharynx and then down into the larynx. lpr causes a wide spectrum of manifestations mainly related to the upper and the lower respiratory system such as laryngitis, asthma, chronic obstructive pulmonary disease, cough, hoarseness, postnasal drip disease, sinusitis, ...

Nod factors excreted by rhizobia are signal molecules that consist of a chitin oligomer backbone linked with a fatty acid at the nonreducing end. Modifications of the Nod factor structures influence their stability in the rhizosphere and their biological activity. To test the function of N-acetyl groups in Nod factors, NodSm-IV(C16:2,S) from Sinorhizobium meliloti was enzymatically N-deacetylat...

An acute unilateral vestibular lesion leads to a vestibular tone imbalance with nystagmus, head roll tilt and postural imbalance. These deficits gradually decrease over days to weeks due to central vestibular compensation (VC). This study investigated the effects of i.v. N-acetyl-DL-leucine, N-acetyl-L-leucine and N-acetyl-D-leucine on VC using behavioural testing and serial [18F]-Fluoro-desoxy...

Novel SF5-bearing maleimide and acrylamide derivatives were synthesised as potential [18F]radio-prosthetic groups for radiolabelling peptides proteins. The efficacy of selected prosthetic was first assessed through bioconjugation with protected model amino acid derivatives. These reactions investigated on an analytical scale via LC-MS across a pH range to quantitatively evaluate this group’s re...