Reagents that interact with sulfhydryl groups are shown to inhibit competence factor (CF)-induced competence development in Streptococcus sanguis (Wicky) strain WE4 (Wicky 4 Ery(R)). Inhibition is correlated with specific inhibition of either the function or biosynthesis of three competent cell-related proteins and is reversed by either 2-mercaptoethanol or dithiothreitol. Mercuric chloride (5 ...

THE 'plasmal reaction' has been widely used in cytology, and is generally interpreted as revealing the presence of aldehydes, but there is considerable doubt as to their source. According to Feulgen and his collaborators, who first described the reaction, the aldehydes (plasmal) are formed by decomposition of acetalphosphatides (plasmalogen) under the catalytic influence of mercuric chloride. A...

The colonization and antimicrobial susceptibility of P. intermedia and P. gingivalis isolated from peri-implant and gingival sulcus samples were determined. Samples were collected from 30 patients submitted to implant in three different times: at the moment of the surgery, 20 and 60 days after the implant installation. Organisms were identified by using a biochemical tests or API 32-A kit and b...

Renal proximal tubular damage and repair are hallmarks of acute kidney injury. As glycogen synthase kinase-3β (GSK3β) is an important cellular regulator of survival and proliferation, we determined its role during injury and recovery of proximal tubules in a mercuric chloride-induced nephrotoxic model of acute kidney injury. Renal proximal tubule-specific GSK3β knockout mice exposed to mercuric...

Background/ Objectives: Chemical Oxygen Demand (COD) is a widely used aggregate organic pollutant index in national discharge standards and one of the critical parameters for water quality assessment. The conventional COD determination by wet oxidative method encounters problem chloride interference samples with high content. dichromate reflux oxidizes 85-95% matter also 100% ions samples, with...

The relationship between cytosolic free Ca2+, mitochondrial membrane potential, ATP depletion, pyridine nucleotide fluorescence, cell surface blebbing, and cell death was evaluated in rat hepatocytes exposed to HgCl2. In cell suspensions, 50 microM HgCl2 oxidized pyridine nucleotides between 1/2 and 2 min, caused ATP depletion between 2 and 5 min, and produced an 89% loss of cell viability afte...

Both pentafluorophenylmercury chloride and trimeric perfluoro-ortho-phenylene mercury interact with phenanthrene to form phosphorescent adducts which exhibit extended binary stacks in the solid state.

Walter H. Jones, aged 22, a seaman, was admitted iuto the Moulmein General Hospital on the 17th of June at 10-30 a.m., with cholera. The symptoms were well developed. I whs iu the hospital when he arrived in a gharry, accompanied and supported by the captain and one of the sailors of the British ship Glanperis, to which the sufferer also belonged. It was not necessary to make any enquiries as t...

Several studies of chronologies of mercury (Hg) in inland lake sediments have demonstrated that Hg accumulation decreased in recent decades. However, episodic mercury accumulation events were recorded in some of these lakes, but not investigated in detail. Recent decreases had been attributed to the reduction of regional Hg consumption and secondary removal during process waste treatment. In ad...