Dinuclear uranium(VI) salen coordination compound: an efficient visible-light-active catalyst for selective reduction of CO2 to methanol.

A new dinuclear uranyl salen coordination compound, [(UO2)2(L)2]·2MeCN [L = 6,6'-((1E,1'E)-((2,2-dimethylpropane-1,3-diyl)bis(azaneylylidene))-bis(methaneylylidene))bis(2-methoxyphenol)], was synthesized using a multifunctional salen ligand to harvest visible light for the selective photocatalytic reduction of CO2 to MeOH. The assembling of the two U centers into one coordination moiety via a chelating-bridging doubly deprotonated tetradentate ligand allowed the formation of U centers with distorted pentagonal bipyramid geometry. Such construction of compounds leads to excellent activity for the photocatalytic reduction of CO2, permitting a production rate of 1.29 mmol g-1 h-1 of MeOH with an apparent quantum yield of 18%. Triethanolamine (TEOA) was used as a sacrificial electron donor to carry out the photocatalytic reduction of CO2. The selective methanol formation was purely a photocatalytic phenomenon and confirmed using isotopically labeled 13CO2 and product analysis by 13C-NMR spectroscopy. The spectroscopic studies also confirmed the interaction of CO2 with the molecule of the title complex. The results of these efforts made it possible to understand the reaction mechanism using ESI-mass spectrometry.

Acute renal morbidities with obstetrical emergencies: An important women health issue.

OBJECTIVE: To observe the impact of acute renal morbidities with obstetrical emergencies on maternal health. METHODS: In this study pregnant women between 28-40 weeks gestational period and delivered women in their puerperal period up to 42 days after delivery having acute renal problems associated with obstetrical emergencies were included. Pregnant and delivered women with obstetrical emergencies and associated other morbidities were excluded. These women were registered on the predesigned proforma after taking written informed consent and taking approval from institutional ethic research committee. The data was collected and analyzed on SPSS version 21. RESULT: Out of these 196 total registered women, majority of these women 81(41.32%) were between 21-30 years of age and multiparous women with parity four and above were 83(42.34%). Commonest presenting symptoms were generalized oedema 123(62.75%) and oligouria 92(46.93%). Frequent obstetrical emergencies observed were pre-eclampsia 53(27.04%), post partum haemorrhage 48(24.48%) and ante partum haemorrhage 36(18.36%) women. The complete recovery was observed in 86(43.87%) women, while mortality was seen in 56(28.57%) women. CONCLUSION: Renal morbidities were more frequently observed in obstetrical emergencies leading to high morbidity and mortality rate.

To examine the extent of compliance to the proposed monitoring protocol among practicing psychiatrists for second generation antipsychotics.

OBJECTIVE: To examine the extent of compliance to the proposed monitoring protocol among practicing psychiatrists for second generation antipsychotics. METHODS: Questionnaire was sent through Survey Monkey to practicing psychiatrists in the states of Iowa, Kansas, Missouri, Nebraska, Oklahoma and Texas. Also paper surveys were distributed to individual psychiatrists of Kansas and Nebraska at their grand rounds, inpatient settings, and outpatient clinics. RESULTS: Ninety eight responses were received of which 51 participants completed the survey on Survey Monkey and 47 completed the paper surveys. Fifty-one percent reported that 25% to 50% of their patients were taking SGAs. About two thirds (69.4%) reported familiarity with the proposed protocol, 17.3% were unfamiliar, and 13% were not sure. Of those who were familiar, 63% percent reported their adherence to the protocol, 21% did not follow the protocol, and 16% were not sure. However, when their responses were closely examined, only five (5%) of the respondents were found completely adherent to the protocol. CONCLUSIONS: Majority of participants were aware of the proposed protocol to protect their patients from metabolic side effects but many of them did not follow it completely. A large study at the national level needs to be done to replicate these findings.

Inhibition property of green tea extract in relation to reserpine-induced ribosomal strips of rough endoplasmic reticulum (rER) of the rat kidney proximal tubule cells.

The aim of this study was to evaluate the effect of green tea in inhibiting and reversing the nephrotoxicity of reserpine--a potent oxidative stress inducer--which induced cellular kidney damage. Serum biochemical parameters, antioxidant enzyme levels, thiobarbituric acid reactive substances (TBARS) and serum transaminases (glutamic oxaloacetic transaminase (GOT) and glutamic pyruvic transaminase (GPT)) values and histopathology were systematically evaluated. Reserpine exposure led to increase the oxidative stress and organ injury was significantly observed through biochemical parameters and ultrastructural evaluation. Sprague-Dawely (S.D.) rats were intraperitonealy administered reserpine to induce oxidative kidney damage. Experimental rats were given green tea extract according to the protocol given below. Sixty rats were randomly divided into six groups, with 10 rats in each group. Reserpine was found to cause kidney proximal tubule damage, such as stripping and clustering of ribosomes from the rough endoplasmic reticulum (rER) and demolishing of mitochondrial christae with elevated level of oxidative stress markers, such as TBARS. While the ultrastructural study showed a revival of kidney proximal tubule cells as a result of the administration of green tea extract to rats. We suggest that green tea might elevate antioxidant defense system, clean up free radicals, lessen oxidative damages and protect kidney against reserpine-induced toxicity and thus had a potential protective effect.