The ability of cells to tolerate hypoxia is critical to their survival, but varies greatly among different cell types. Despite alterations in many cellular responses during hypoxic exposure, pulmonary arterial endothelial cells (PAEC) retain their viability and cellular integrity. Under similar experimental conditions, other cell types, exemplified by renal tubular epithelial cells, are extreme...

Activation of P2Y receptors by released nucleotides subserves important autocrine-paracrine functions in various non-neural tissues. To investigate how P2Y receptors are activated in a neuronal environment, we used PC12 cells in which nucleotides were found to elicit increases in inositol phosphates via P2Y2 and decreases in cAMP via P2Y12 receptors. Depolarization of PC12 cells raised inositol...

Strong evidence has been obtained from experiments in viva that in different types of cells, deoxyribosyl compounds are formed through a reduction of the corresponding ribosyl compounds (cf. (1)). Recently, enzyme systems have been obtained from avian, mammalian, and bacterial cells, which carry out such transformations with pyrimidine and purine ribonucleotides (2-4). The present paper describ...

Introduction: Microbial metabolic activity is significant in the cycling of phosphorus in aquatic and sedimentary environments. The requirement of microorganisms to use elemental phosphorous for energy transfer and to bind, concentrate and cause crystalliza-tion of phosphates is well established [e.g. 1,2]. The crystallization of phosphates in a sedimentary environment commonly occurs when the ...

Clinoptilolite zeolite was chemically modified with sodium, calcium, or magnesium to comparatively study the physical recovery of ammonium and phosphates from simulated blackwater.

Strong evidence has been obtained from experiments in viva that in different types of cells, deoxyribosyl compounds are formed through a reduction of the corresponding ribosyl compounds (cf. (1)). Recently, enzyme systems have been obtained from avian, mammalian, and bacterial cells, which carry out such transformations with pyrimidine and purine ribonucleotides (2-4). The present paper describ...

Parasitic reactions are responsible for continuous performance loss during the normal operation and storage of lithium-ion batteries, particularly those using nickel-rich cathode materials. Among many contributors, residual Li2CO3 on surface cathodes plays a detrimental role in promoting parasitic reactions, hence accelerates In this work, wet impregnation process was utilized to convert LiOH i...

Although numerous articles concerning phosphate chemistry have regularly been appearing in the literature for the last one hundred years, there is as yet no consistent and universally accepted concept of the structure of many condensed phosphates. Until rather recently, in fact, the whole field of phosphate chemistry was in a chaotic state, For example, a given crystalline compound was variousl...

The recent interest in inositol phosphates as second messengers (e.g. Berridge & Irvine, 1984) has led to many experiments being performed using myo-['H]inositol to label cells, followed by stimulation and subsequent quantification of radiolabelled inositol phosphates (e.g. Berridge et al., 1982, 1983). We have recently become aware of two instances in which considerable loss of radiolabelled i...