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1.
In vitro protein synthesis, lysosomal hydrolases activity and peroxidase activity in the anterior pituitary were estimated in adult male rats treated with 50 micrograms of estradiol benzoate (EB) for 1 day or 7 days. Pituitary protein synthesis, protein and RNA content increased after 7 days. A significant increase in total and membrane-bound acid phosphatase was noted after 1 day or 7 days of EB treatment whereas total beta-glucuronidase activity decreased in both 1 and 7 day group. Cathepsin activity increased after 7 days and pituitary peroxidase system did not change by EB treatment. These findings suggest that immediate change in the enzyme milieu may be one of the first reactions by which EB expresses its feedback control. 相似文献
2.
Ibuprofen, a unique anti-inflammatory compound with antifungal activity against dermatophytes 总被引:2,自引:2,他引:0
Ibuprofen showed significant antifungal activity in vitro against dermatophytes at pH 5 (MIC: 5–40 μg ml-1 ). In this respect it is comparatively more efficient than two well known and medically used antifungal compounds, benzoic and salicylic acids. This compound with anti-inflammatory activity which is not found in any other conventional antifungal organic acids, may have clinical prospects. 相似文献
3.
4.
Leptin, the product of the Obese (Lep) gene, orchestrates behavioral and metabolic responses to nutrient intake. Here, we demonstrate tissue-specific autoregulation of Lep. Moderate increases in circulating leptin considerably decreased Lep expression in adipose tissue and induced lep expression in skeletal muscle, a tissue that normally does not express this gene. Changes in nutrient availability resulted in rapid alterations in Lep autoregulation. These findings demonstrate negative feedback regulation of Lep in fat, and indicate that leptin secretion can function as a vehicle of 'cross-talk' between adipose tissue and skeletal muscle, leading to tissue-specific modulation of the 'leptin signal'. 相似文献
5.
P L Jansen J R Chowdhury E B Fischberg I M Arias 《The Journal of biological chemistry》1977,252(8):2710-2716
Formation of bilirubin monoglucuronide from unconjugated bilirubin requires a microsomal enzyme, UDP-glucuronate glucuronyltransferase (EC 2.4.1.17). Conversion of bilirubin monoglucuronide to bilirubin diglucuronide, the major bilirubin conjugate in bile, was studied in subcellular fractions of rat liver. The highest specific activity for bilirubin diglucuronide formation occurred in a fraction highly enriched in plasma membranes. Studies of reaction stoichiometry and utilization of UDP-D-[14C]glucuronic acid revealed that conversion of bilirubin monoglucuronide to bilirubin diglucuronide is not catalyzed by UDP-glucuronyltransferase, and results from transglucuronidation of bilirubin monoglucuronide, with formation of bilirubin diglucuronide and unconjugated bilirubin. When unconjugated bilirubin was infused intravenously into rats at rates exceeding the maximal hepatic excretory capacity, bilirubin monoglucuronide accumulated in serum and bilirubin diglucuronide was found exclusively in bile as the predominant bilirubin metabolite. These results suggest that formation of bilirubin diglucuronide occurs at the surface membrane of the liver cell. Conversion of bilirubin monoglucuronide to bilirubin diglucuronide may play a role in the transport of bilirubin glucuronides from liver to bile. 相似文献
6.
Religious priming has been found to have both positive and negative consequences, and recent research suggests that the activation of God-related and community-related religious cognitions may cause outgroup prosociality and outgroup derogation respectively. The present research sought to examine whether reminders of God and religion have different effects on attitudes towards ingroup and outgroup members. Over two studies, little evidence was found for different effects of these two types of religious primes. In study 1, individuals primed with the words “religion”, “God” and a neutral control word evaluated both ingroup and outgroup members similarly, although a marginal tendency towards more negative evaluations of outgroup members by females exposed to religion primes was observed. In study 2, no significant differences in attitudes towards an outgroup member were observed between the God, religion, and neutral priming conditions. Furthermore, the gender effect observed in study 1 did not replicate in this second study. Possible explanations for these null effects are discussed. 相似文献
7.
Water-deficit stress (–1.0 MPa through polyethylene glycol 6000 for 2 h) decreased the relative water content (RWC) and leaf water potential (LWP) in the two jute species Corchorus capsularis L. (cv. JRC 212) and C. olitorius L. (cv. JRO 632), more so in the latter. Pretreatment of seeds with 5 m M CaCl2 improved the water uptake capacity without altering stomatal movement, whereas foliar spraying with 0.01 m M ABA reduced transpiration through the reduction of stomatal aperture. A combination of both treatments, i.e. seed treatment followed by foliar spraying, additively improved the water status under water-deficit stress. Efflux of K+ from the guard cells followed by stomatal closure was more rapid in C. capsularis than in C. olitorius under water-deficit stress. Uptake of [32 P]-phosphate under water-deficit stress decreased more in C. olitorius than in C. capsularis and treatment of seeds with Ca2+ counteracted this decrease more markedly in the former species. These findings indicate that C. olitorius is more susceptible than C. capsularis to water-deficit stress. 相似文献
8.
S. P. Pawar D. P. Dhotre S. A. Shetty S. P. Chowdhury B. L. Chaudhari Y. S. Shouche 《Journal of bacteriology》2012,194(23):6629-6630
Janibacter hoylei MTCC8307 was isolated from stratospheric air at an altitude of 41.4 km over Hyderabad, India. Here, we present the draft genome of Janibacter hoylei MTCC8307, which contains 3,139,099 bp with a G+C content of 72.8 mol%, 2,972 protein-coding genes, and 57 structural RNAs. 相似文献
9.
Sajal Chakraborti Animesh Chowdhury Pulak Kar Partha Das Soni Shaikh Soumitra Roy Tapati Chakraborti 《Archives of biochemistry and biophysics》2009,487(2):123-130
Treatment of bovine pulmonary smooth muscle cells with the TxA2 mimetic, U46619 stimulated [Ca2+]i, which was inhibited upon pretreatment with apocynin (NADPH oxidase inhibitor). Pretreatment with cromakalim (KV channel opener) or nifedepine (L-VOCC inhibitor) inhibited U46619 induced increase in [Ca2+]i, indicating a role of KV-LVOCC axis in this scenario. Neither cromakalim nor nifedepine inhibited U46619 induced increase in NADPH oxidase activity, suggesting that the NADPH oxidase activation is proximal to the KV-LVOCC axis in the cells. Pretreatment with calphostin C (PKC inhibitor) markedly reduced U46619 induced increase in NADPH oxidase activity and [Ca2+]i in the cells. Calphostin C pretreatment also markedly reduced p47phox phosphorylation and translocation to the membrane and association with p22phox, a component of Cyt.b558 of NADPH oxidase in the membrane. Overall, PKC plays an important role in NADPH oxidase derived O2−-mediated regulation of KV-LVOCC axis leading to an increase in [Ca2+]i by U46619 in the cells. 相似文献
10.
Omar M. Khdour Indrajit Bandyopadhyay Sandipan Roy Chowdhury Nishant P. Visavadiya Sidney M. Hecht 《Bioorganic & medicinal chemistry》2018,26(12):3359-3369
Friedreich’s ataxia (FRDA) is an autosomal recessive neurodegenerative disorder resulting from reduced expression of the protein frataxin (FXN). Although its function is not fully understood, frataxin appears to help assemble iron sulfur clusters; these are critical for the function of many proteins, including those needed for mitochondrial energy production. Finding ways to increase FXN levels has been a major therapeutic strategy for this disease. Previously, we described a novel series of methylene violet analogues and their structural optimization as potential therapeutic agents for neurodegenerative and mitochondrial disorders. Presently, a series of methylene blue analogues has been synthesized and characterized for their in vitro biochemical and biological properties in cultured Friedreich’s ataxia lymphocytes. Favorable methylene blue analogues were shown to increase frataxin levels and mitochondrial biogenesis, and to improve aconitase activity. The analogues were found to be good ROS scavengers, and able to protect cultured FRDA lymphocytes from oxidative stress resulting from inhibition of complex I and from glutathione depletion. The analogues also preserved mitochondrial membrane potential and augmented ATP production. Our results suggest that analogue 5, emerging from the initial structure of the parent compound methylene blue (MB), represents a promising lead structure and lacks the cytotoxicity associated with the parent compound MB. 相似文献