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排序方式: 共有111条查询结果,搜索用时 15 毫秒
91.
Vinay Kumar Venishetty Ramakrishna Samala Rojarani Komuravelli Madhusudana Kuncha Ramakrishna Sistla Prakash V. Diwan 《Nanomedicine : nanotechnology, biology, and medicine》2013,9(3):388-397
Delivery of drugs to brain is an elusive task in the therapy of many serious neurological diseases. With the aim to create a novel formulation to enhance the drug uptake to brain, betreliesoxybutyric acid (HBA) grafted docetaxel loaded solid lipid nanoparticles (HD-SLNs) were explored. Transportation of HD-SLNs relies on the transport of novel ligand, HBA, by monocarboxylic acid transporter (MCT1). Expression of MCT1 transporter on brain endothelial cells (bEnd cells) was studied using immunocytochemistry. Stearylamine–HBA conjugate was used to modify the surface of SLNs and it was confirmed using XPS (X-Ray Photon Spectroscopy) analysis. In vitro release studies revealed the controlled release of drug from HD-SLNs. Cytotoxicity and cell uptake studies revealed the increased uptake of docetaxel with HD-SLNs. Mechanism involved in the uptake of HD-SLNs was studied in bEnd cells by saturating MCT1 with excess HBA. Pharmacokinetic and brain distribution demonstrated increased docetaxel concentrations in brain compared with Taxotere®.From the Clinical EditorThe authors of this study demonstrate enhanced drug delivery to the brain using a novel formulation of beta-hydroxybutyric acid grafted docetaxel loaded solid lipid nanoparticles. The results show increased uptake of docetaxel compared with Taxotere. 相似文献
92.
Jagannath K Chaluvadi MR Mullangi R Mamidi NV Srinivas NR 《Biopharmaceutics & drug disposition》2004,25(7):323-328
Pharmacokinetics of ragaglitazar (a novel phenoxazine derivative of aryl propanoic acid), a potent insulin sensitizing and lipid-lowering compound was studied in Wistar rats. A single dose of 1, 3 or 10 mg/kg of ragaglitazar was given orally to male rats (n=4 per dose level) to evaluate dose proportionality. In another study, a single intravenous bolus dose of ragaglitazar was given to rats (n=4) at 3 mg/kg dose following administration through the lateral tail vein in order to obtain the absolute oral bioavailability and clearance parameters. Blood samples were drawn at predetermined intervals and the concentration of ragaglitazar in plasma was determined by a validated HPLC method. Plasma concentration versus time data were generated following oral and intravenous dosing and pharmacokinetic analysis was performed using non-compartmental analysis. The results revealed that Cmax and AUC(0-infinity) increased more than proportionally to the administered oral doses. As dose increased in the ratio of 1:3:10, the mean Cmax and AUC(0-infinity) increased in the ratio of 1:3.2:13 and 1:3.2:16, respectively. After intravenous administration the systemic clearance and volume of distribution of ragaglitazar in rats were 139+/-30 ml/h/kg and 463+/-51 ml/kg, respectively (mean+/-SD). Plasma concentrations declined mono-exponentially following intravenous administration and elimination half-life (t1/2) was about 2.6 h and not significantly different (p > 0.05) from the value from oral administration. Mean residence time (MRT) values for ragaglitazar were found to be 4.15+/-0.52 h (3.5 to 4.6 h). Absolute oral bioavailability of ragaglitazar across the doses tested was in the range of 68%-93%. In conclusion, ragaglitazar exhibits promising pharmacokinetic properties in rats. 相似文献
93.
Sudarshan MK Mahendra BJ Madhusudana SN Rahman SA Ashwathnarayana DH 《Indian journal of public health》2006,50(1):11-14
The Islands of Andaman and Nicobar and Lakshadweep have been reported to be rabies free from time immemorial. Recently, a survey of the islands of Andaman and Nicobar & Lakshadweep was done between July and August 2003 to assess their rabies free status. It was revealed that these islands continue to remain rabies free. However, in Andamans the increasing dog population, poor vigil on import of dogs and lack of laboratory surveillance for rabies posed a threat to this status. The Lakshadweep islands, which are free of dogs, however, faced a threat from the lack of vigil on the entry and presence of cats and poor surveillance for rabies in them. 相似文献
94.
Elizabeth Reed Balaiah Donta Anindita Dasgupta Mohan Ghule Madhusudana Battala Saritha Nair Jay Silverman Arun Jadhav Prajakta Palaye Niranjan Saggurti Anita Raj 《Maternal and child health journal》2016,20(6):1203-1210
Objectives The social positioning (i.e. social status and autonomy) of women in the household facilitates women’s access to and decision-making power related to family planning (FP). Women’s access to spending money, which may be an indicator of greater social positioning in the household, may also be greater among women who engage in income generating activities for their families, regardless of women’s status in the household. However, in both scenarios, access to money may independently afford greater opportunity to obtain family planning services among women. This study seeks to assess whether access to money is associated with FP outcomes independently of women’s social positioning in their households. Methods Using survey data from married couples in rural Maharashtra, India (n = 855), crude and adjusted regression was used to assess women’s access to their own spending money in relation to past 3 month use of condoms and other forms of contraceptives (pills, injectables, intrauterine device). Results Access to money (59 %) was associated with condom and other contraceptive use (AORs ranged 1.5–1.8). These findings remained significant after adjusting for women’s FP decision-making power in the household and mobility to seek FP services. Conclusion While preliminary, findings suggest that access to money may increase women’s ability to obtain FP methods, even in contexts where social norms to support women’s power in FP decision-making may not be readily adopted. 相似文献
95.
Sudarshan MK Madhusudana SN Mahendra BJ Ashwathnarayana DH Jayakumary M Gangaboriah 《Indian journal of public health》1999,43(2):76-78
The present controlled clinical trial evaluates the immunoresponse to Purified Verocell Rabies Vaccnine (PVRV) by Essen schedule of vaccination during Pregnancy. Seventeen Pregnant women with history of animal bites who received PVRV as per Essen regimen were matched for the confounding variables of age, socio-economic status and doses of PVRV received with seventeen "Non-pregnant women". The mean age was about 24 years, majority (70.6%) belonging to middle socio-economic group and received 3 doses of PVRV. Contrary to the expectations the rabies neutralizing antibody titres were slightly higher in pregnant women (except day 180) but the difference was not significant (P > 0.2). Both the groups of women had antibody titres above protective level (0.5 IU/ml) from day 14 till day 365 thus indicating immunogenic efficacy of PVRV by Essen regimen during Pregnancy. 相似文献
96.
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98.
A 12-year-old boy presented with fever and sore throat of 6 days duration followed by vomiting and altered sensorium. He had received 4 doses of antirabies vaccine following a dog bite 4 weeks back. Rabies immunoglobulin was not given. History of hydrophobia and aerophobia were strikingly absent. The possibilities of rabies encephalitis and vaccine induced acute disseminated encephalomyelitis (ADEM) were considered. MRI brain showed exclusive grey matter changes characteristic of rabies. The diagnosis was further confirmed by serological tests. 相似文献
99.
Barringtonia racemosa presents a wide range of therapeutic applications. In the course of identifying bioactives from Indian medicinal plants it was observed that the hexane, ethanol and methanol extracts of B. racemosa seeds displayed potent yeast and intestinal alpha-glucosidase inhibitory activities. The methanol extract was found to be superior among them. However, none of the extracts exhibited pancreatic alpha-amylase inhibitory activity, rather the ethanol and methanol extracts accelerated the alpha-amylase enzyme activity. Interestingly, however, bartogenic acid isolated from the methanol extract inhibited alpha-amylase also. This is the first report identifying alpha-glucosidase inhibitory activity in B. racemosa seed extracts and assigning to bartogenic acid an alpha-glucosidase and amylase inhibitory property. The presence of bartogenic acid in B. racemosa seeds as a major compound is also reported for the first time in this communication. 相似文献
100.
Shampur Narayan Madhusudana Ranjini Shamsundar Saraswati Seetharaman 《International journal of infectious diseases》2004,8(1):21-25
OBJECTIVE: The current recommended inactivating agent for the rabies virus, beta propiolactone (BPL) is very expensive and potentially carcinogenic. There is a need to evaluate alternative chemicals, which will inactivate the virus without affecting its antigenicity. In this study the effect of ascorbic acid on the infectivity of the rabies virus has been investigated. METHOD: Vero cell grown fixed rabies virus CVS strain was treated with 0.1 mg/ml, 0.5 mg/ml and 1mg/ml final concentrations of ascorbic acid and 5 microg/ml of copper sulfate and kept at 4 degrees C along with untreated virus material. Each aliquot was titrated after various intervals for viral infectivity using both mice inoculation and titration in vero cells. The antigenicity of the virus material was determined by antibody induction in mice and modified NIH tests in parallel with virus material inactivated with a 1:4000 concentration of BPL. RESULTS: An optimal concentration of 0.5 mg/ml of ascorbic acid and 5 microg/ml of copper sulfate completely inactivated the virus after 72 hours. The inactivated virus retained good antigenicity and potency value, which was comparable with using BPL. CONCLUSION: These findings suggest that ascorbic acid can be used as an inactivating agent for fixed rabies virus grown in cell culture particularly for the preparation of diagnostic reagents. Further studies are required to evaluate its effect on the cell associated virus, probable therapeutic potential and feasibility of replacing BPL in production of inactivated rabies vaccine. 相似文献