Positive Regulation of Rhizophora mucronata Poir Extracts on Blood Glucose and Lipid Profile in Diabetic Rats

Background: About, five percent of the population in the world has been clinically determined to have diabetes mellitus and considered as one of the principal reasons for death. The present research designed to assess the impact of Rhizophora mucronata leaves ethanolic extract (EtOH-Et) and its dichloromethane (DCM) and aqueous (Aq) fractions in diabetic rats. Methods: Extract and fractions of R. mucronata were determined qualitative and quantitative methods. Different dose (50, 100 and 200 mg/kg of body weight) of extract and fractions were administered intraperitoneally (I.P.) to the normal glycemic rats and their hypoglycemic effect determined for 24 h. Type 1 diabetes mellitus (T1DM) was induced by single injection of streptozotocin (STZ; 60 mg/ kg; I.P.), and type 2 diabetes mellitus (T2DM) was induced by STZ (60 mg/kg; I.P.), after 15 min nicotinamide (120 mg/kg; I.P.). The optimum dose of 100 mg/kg body weight of extract and fractions was administrated to the rats orally for 14 days. The blood glucose level estimated on 0th, 7th, and 14th day. The level of serum cholesterol, triglycerides, and lipoprotein cholesterol were also evaluated on the 14th day. Results: The phytochemical results indicated alkaloids, flavonoids, and terpenoids present in the concentrates of R. mucronata. The content of alkaloids in DCM-F was present in high amount compared with ethanolic extract and an aqueous fraction. All the extract exhibited as non-toxic nature. DCM-F treated rats significantly reduced in blood glucose level (P<0.01), serum cholesterol (P<0.05) and triglycerides (P<0.05) levels whereas HDL-C level was found to be increased (P<0.05) as compared with the diabetic control of T1DM and T2DM. Conclusion: DCM-F of R. mucronata act as effective anti-hyperglycaemic and antihyperlipidemic agent in insulin dependent and non-insulin dependent diabetic rats

Uranium speciation and stability after reductive immobilization in sediments

It has generally been assumed that the bioreduction of hexavalent uranium in groundwater systems will result in the precipitation of immobile uraninite (UO2). In order to explore the form and stability of uranium immobilized under these conditions, we introduced lactate (15 mM for 3 months) into flow-through columns containing sediments derived from a former uranium-processing site at Old Rifle, CO. This resulted in metal-reducing conditions as evidenced by concurrent uranium uptake and iron release. Despite initial augmentation with Shewanella oneidensis, bacteria belonging to the phylum Firmicutes dominated the biostimulated columns. The immobilization of uranium (similar to 1 mmol U per kg sediment) enabled analysis by Xray absorption spectroscopy (XAS). Tetravalent uranium associated with these sediments did not have spectroscopic signatures representative of U-U shells or crystalline UO2. Analysis by microfocused XAS revealed concentrated micrometer regions of solid U(IV) that had spectroscopic signatures consistent with bulk analyses and a poor proximal correlation (mu m scale resolution) between U and Fe. A plausible explanation, supported by biogeochemical conditions and spectral interpretations, is uranium association with phosphoryl moieties found in biomass; hence implicating direct enzymatic uranium reduction. After the immobilization phase, two months of in situ exposure to oxic influent did not result in substantial uranium remobilization. Ex situ flow-through experiments demonstrated more rapid uranium mobilization than observed in column oxidation studies and indicated that sediment-associated U(IV) is more mobile than biogenic UO2. This work suggests that in situ uranium bioimmobilization studies and subsurface modeling parameters should be expanded to account for non-uraninite U(IV) species associated with biomass. (C) 2011 Elsevier Ltd. All rights reserved

Assessment of protein silver nanoparticles toxicity against pathogenic Alternaria solani

Mycogenic synthesis of silver nanoparticles (AgNPs) was carried out in the present investigation using an aqueous extract of endophytic non-pathogenic Alternaria solani F10 (KT721914). The mycosynthesized AgNPs were characterized by means of spectroscopic and microscopic techniques. The surface plasmon resonance found at 430 nm confirmed the formation of stable AgNPs for several weeks at room temperature. Also, the results revealed the formation of spherical and monodispersed AgNPs with an average size of 14.8 +/- 1.2 nm. The FT-IR spectrum suggested that the fungal extracellular proteins and secondary metabolites had the role in Ag reduction and AgNPs capping of which protein Ag nanoconjugates were formed. Furthermore, the mycosynthesized AgNPs exhibited potent antifungal activity against different pathogenic isolates of the same Alternaria solani fungus, the causal pathogen of tomato early blight disease. The antifungal efficiency of the AgNPs at 1, 5 and 10 ppm were evaluated for 8 days after incubation by measuring the inhibition rate of fungal radial growth. The results were further supported by investigating fungal hyphae morphology alteration by scanning and transmission electron microscopy. Treated fungal hyphae showed formation of pits and pores. Also, the mycosynthesized AgNPs were able to pass and distribute throughout the fungal cell area and interact with the cell components.A financial support from European Commission by Erasmus Mundus Scholarship-ACTION 2 WELCOME program is gratefully acknowledged. Work in JAD laboratory was supported by grant BIO2014-54269-R from the Ministerio de Economia y Competividad (Spain).Abdel-Hafez, SII.; Nafady, NA.; Abdel-Rahim, IR.; Shaltout, AM.; Daros Arnau, JA.; Mohamed, MA. (2016). 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Low-Temperature Continuous Flow Synthesis of Metal Ammonium Phosphates

The synthesis of the high performance inorganic materials essential to the quality of modern day life is hindered by traditionalist attitudes and reliance on outdated methods such as batch syntheses. While continuous flow methods have been extensively adopted in pharmaceutical circles, they remain largely unexplored for the preparation of inorganic compounds, despite higher efficiency, safety and versatility. In this publication, we demonstrate a step-change for the synthesis of metal ammonium phosphates through conversion of the extant batch process to a low-temperature continuous regime, exhibiting a tenfold increase in throughput combined with a significant decrease in particle size

2011. Green synthesis of silver nanoparticles by using derived callus extract of bitter apple (Citrullus colocynthis

Citrullus colocynthis belong to the family of cucurbitaceae are purgative and used for the treating mamilities, jaundice and urinary disease Plant mediated synthesis of metallic nanoparticles is an increasing commercial demand due to the wide applicability in various areas such as electronics, catalysis, chemistry, energy, cosmetics and medicine. In the present investigation, synthesis of silver nanoparticles by using stem derived callus extracts of Citrullus colocynthis (L.) Schrader. The extract incubated with AgNO 3 showed gradual change in the colour of the extract from greenish to reddish brown it indicate the silver nanopaticles synthesis. The shape of the SNP synthesized by stem derived callus extract was spherical and was found to be in the range of 75 nm by AFM. FTIR absorption spectra conclude that the compounds attached with silver nanoparticles could be polyphenols with aromatic ring and bound amide region. The novel silver nanoparticles exhibited a tremendous antibacterial activity; it showed the maximum activity against bioflim bacteria such as E.coli (10.1 mm), V. paraheamolyticus (10.1 mm), P. aeruginosa (8 mm), Proteus vulgaris (9 mm) and L. monocytogens (8 mm) and also observed that it showed no activity against Proteus mirabilis, Salmonella enteritidis, and Staphylococcus aureus. To the best of our knowledge this is the first report on the antibacterial activity of silver nanoparticles against bioflim forming bacteria

Antidiabetic effect of a black mangrove species Aegiceras corniculatum in alloxan-induced diabetic rats

Earlier ethnopharmacological records divulged the traditional usages of mangrove Aegiceras corniculatum (Linn.) Blanco distributed in coastal and estuarine areas of Southeast India. Excluding scientific knowledge of A. corniculatum against diabetes an upgrowing endocrinal disorder, our present study evaluated the effect on alloxan-induced diabetic rats. Diabetes was induced in adult rats of the Wistar strain by intraperitoneal injection of alloxan monohydrate. The experimental rats were administered with leaf suspension of A. corniculatum post orally using an intragastric tube. On completion of the 60-day treatment, a range of biochemical parameters were tested including liver hexokinase, glucose-6phosphatase and fructose 1, 6 bisphosphatase in the liver of control and allaxon-diabetic rats. As a result, A. corniculatum leaf suspension showed moderate reduction in blood glucose (from 382 ± 34 to 105 ± 35), glycosylated hemoglobin, a decrease in the activities of glucose-6 phosphatase and fructose 1, 6-bisphosphatase, and an increase activity of liver hexokinase achieved through the oral administration of extract on 100 mg/kg. The present findings support promising results in terms of antidiabetic activities establishing its candidacy for further purification of individual compound in order to understand their mechanism of action

Prevalence of lower urinary tract infection in South Indian type 2 diabetic subjects

This study was done to determine the prevalence of lower urinary tract infection (UTI), the causative pathogens, their antimicrobial pattern, and the recurrence of infection in type 2 diabetic subjects. A total of 1157 (M: F 428: 729) type 2 diabetic subjects were selected for this study. Midstream urine specimens were collected and the culture tests were done by a quantitative method whereas antimicrobial sensitivity was determined by using the Kirby-Bauer method. A significant colony count was seen in 495 (42.8%) subjects and an insignificant count in 350 (30.3%) subjects; there were a few cases of recurrent UTI. Women (47.9%) had a significantly higher prevalence of UTI than men (34.1%) (χ2 = 20.3, P < 0.0001). Except for BMI, UTI was significantly associated with age, duration of diabetes, and poor glycemic control in both sexes. About 533 pathogens of gram positive and gram negative bacilli were isolated from 495 subjects in this study. Escherichea coli (E. coli) was the most commonly found organism. Gram negative pathogens were found to be highly sensitive to sulbactum / cefoperazone and piperacillin / tazobactum. The prevalence of UTI was significantly higher in women than men with E. coli being the major isolated pathogen. Gram negative pathogens were highly sensitive to sulbactum / cefoperazone and piperacillin / tazobactum