|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Ocular drug delivery systems:An overview显示文摘The major challenge faced by today's pharmacologist and formulation scientist is ocular drug delivery. Topical eye drop is the most convenient and patient compliant route of drug administration,especially for the treatment of anterior segment diseases. Delivery of drugs to the targeted ocular tissues is restricted by various precorneal,dynamic and static ocular barriers. Also,therapeutic drug levels are not maintained for longer duration in target tissues. In the past two decades,ocular drug delivery research acceleratedly advanced towards developing a novel,safe and patient compliant formulation and drug delivery devices/techniques,which may surpass these barriers and maintain drug levels in tissues. Anterior segment drug delivery advances are witnessed by modulation of conventional topical solutions with permeation and viscosity enhancers. Also,it includes development of conventional topical formulations such as suspensions,emulsions and ointments. Various nanoformulations have also been introduced for anterior segment ocular drug delivery. On the other hand,for posterior ocular delivery,research has been immensely focused towards development of drug releasing devices and nanoformulations for treating chronic vitreo-retinal diseases. These novel devices and/or formulations may help to surpass ocular barriers and associated side effects with conventional topicaldrops. Also,these novel devices and/or formulations are easy to formulate,no/negligibly irritating,possess high precorneal residence time,sustain the drug release,and enhance ocular bioavailability of therapeutics. An update of current research advancement in ocular drug delivery necessitates and helps drug delivery scientists to modulate their think process and develop novel and safe drug delivery strategies. Current review intends to summarize the existing conventional formulations for ocular delivery and their advancements followed by current nanotechnology based formulation developments. Also,recent developments with other ocular drug delivery strategies employing in situ gels,implants,contact lens and microneedles have been discussed. | Ashaben Patel Kishore Cholkar Vibhuti Agrahari Ashim K Mitra | 2013 | World Journal of Pharmacology2013，2，2： | 18 |
| 2 | Laboratory simulated dissipation of metsulfuron methyl and chlorimuron ethyl in soils and their residual fate in rice, wheat and soybean at harvest显示文摘Two sulfonylurea herbicides, metsulfuron methyl (Ally 20 WP) and chlorimuron ethyl (Classic 25 WP) were evalu-ated for their dissipation behaviour in alluvial, coastal saline and laterite soils under laboratory incubated condition at 60% water holding capacity of soils and 30 °C temperature was maintained. In field study herbicides were applied twice for the control of grasses, annual and perennials broad leaves weeds and sedges in rice, wheat and soybean to find out the residual fate of both the herbicides on different matrices of respective crops after harvest. Extraction and clean up methodologies for the herbicides were standardized and subsequently analyzed by HPLC. The study revealed that the half-lives of metsulfuron methyl and chlorimuron ethyl ranged from 10.75 to 13.94 d irrespective of soils and doses applied. Field trials with rice, wheat and soybean also revealed that these two herbicides could safely be recommended for application as no residues were detected in the harvest samples. | SANYAL Nilanjan PRAMANIK Sukhendu Kumar PAL Raktim CHOWDHURY Ashim | 2006 | Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2006，7，3： | 11 |
| 3 | Nonalcoholic steatohepatitis in Asian Indians is neither associated with iron overload nor with HFE gene mutations显示文摘AIM: The pathogenesis of occurrence of liver inflammation and fibrosis in patients with nonalcoholic steatohepatitis (NASH) is not completely understood. Other than insulin resistance, iron abnormalities have been thought to be one of the triggering factors. Therefore, our aim was to study the role of iron abnormalities and HFE gene mutations in patients with NASH.METHODS: Thirty-one patients of NASH diagnosed on the basis of clinical examination biochemistry, ultrasonography and liver biopsy (n = 14) were included in the study. Serum iron parameters (n = 23) (iron, ferritin, total iron-binding capacity and transferrin saturation), Peris' iron staining on liver biopsies (n = 14) and HFE gene mutations (C282Y and H63D) (n = 16) were studied in these patients. The association between iron staining, necroinflammatory activity and fibrosis stage on liver biopsies was also determined.RESULTS: Elevated serum iron, ferritin and transferrin saturation above 55% were observed in 4.3% of patients.On histology, 71% of the patients had negative iron staining,21.4% had 1+ staining, 7.2% had 2+ staining and none had 3+ or 4+ staining. There was no association between the degree of iron staining and necroinflammatory activity (P = 0.55) and fibrosis stage (P = 0.09) on histology. None of the patients had C282Y HFE gene mutation and four patients (25%) were found to be heterozygotes for H63D gene mutation.CONCLUSION: Our study does not favor iron overload and HFE gene mutations as major factors in the pathogenesis of NASH in Asian Indians. | Ajay Duseja Reena Das Mohit Nanda Ashim Das Gurjeewan Garewal Yogesh Chawla | 2005 | World Journal of Gastroenterology2005，11，3： | 9 |
| 4 | Silicon and silicon nitride photonic circuits for spectroscopic sensing on-a-chip [Invited]显示文摘There is a rapidly growing demand to use silicon and silicon nitride(Si3N4) integrated photonics for sensing applications, ranging from refractive index to spectroscopic sensing. By making use of advanced CMOS technology,complex miniaturized circuits can be easily realized on a large scale and at a low cost covering visible to mid-IR wavelengths. In this paper we present our recent work on the development of silicon and Si3N4-based photonic integrated circuits for various spectroscopic sensing applications. We report our findings on waveguide-based absorption, and Raman and surface enhanced Raman spectroscopy. Finally we report on-chip spectrometers and on-chip broadband light sources covering very near-IR to mid-IR wavelengths to realize fully integrated spectroscopic systems on a chip. | Ananth Z.Subramanian Eva Ryckeboer Ashim Dhakal Frédéric Peyskens Aditya Malik Bart Kuyken Haolan Zhao Shibnath Pathak Alfonso Ruocco Andreas De Groote Pieter Wuytens Daan Martens Francois Leo Weiqiang Xie Utsav Deepak Dave Muhammad Muneeb Pol Van Dorpe Joris Van Campenhout Wim Bogaerts Peter Bienstman Nicolas Le Thomas Dries Van Thourhout Zeger Hens Gunther Roelkens Roel Baets | 2015 | Photonics Research2015，3，5： | 7 |
| 5 | Genetic polymorphism in CD14 gene, a co-receptor of TLR4 associated with non-alcoholic fatty liver disease显示文摘AIM To evaluate the pathogenic role of toll-like receptor(TLR) gene polymorphisms in patients with nonalcoholic fatty liver disease(NAFLD).METHODS Two hundred and fifty subjects(NAFLD = 200, healthy volunteers = 50) underwent polymerase chain reaction and restriction fragment length polymorphism to assess one polymorphism in the toll-like receptor 2(TLR2) gene(A753G), two polymorphisms in the TLR4 gene(TLR4 Asp299 Gly and Thr399 Ile allele), and two polymorphisms in the cluster of differentiation 14(CD14)(C-159 T and C-550T) gene, a co-receptor of TLR4. Association of TLR gene polymorphisms with NAFLD and its severity was evaluated by genetic models of association.RESULTS On both multiplicative and recessive models of gene polymorphism association, there was significant association of CD14 C(-159) T polymorphism with NAFLD; patients with TT genotype had a 2.6 fold increased risk of developing NAFLD in comparison to CC genotype. There was no association of TLR2 Arg753 Gln, TLR4 Asp299 Gly, Thr399 Ile, and CD14 C(-550) T polymorphisms with NAFLD. None of the TLR gene polymorphisms had an association with histological severity of NAFLD.CONCLUSION Patients with CD14 C(-159) T gene polymorphism, a co-receptor of TLR4, have an increased risk of NAFLD development. | Shweta Kapil Ajay Duseja Bal Krishan Sharma Bhupesh Singla Anuradha Chakraborti Ashim Das Pallab Ray Radha K Dhiman Yogesh Chawla | 2016 | World Journal of Gastroenterology2016，22，42： | 7 |
| 6 | Frequency of primary iron overload and HFE gene mutations (C282Y,H63D and S65C) in chronic liver disease patients in north India显示文摘AIM:To identify the frequency of iron overload and study the three mutations in the HFE gene (C282Y,H63D,and S65C) in patients with chronic liver disorders (CLD) and controls. METHODS:To identify patients with iron overload (transferrin saturation > 45% in females and > 50% in males and serum ferritin > 1000 ng/mL) we evaluated 236 patients with CLD,including 59 with non-alcoholic steatohepatitis (NASH),22 with alcoholic liver disease (ALD),19 of cirrhosis due to viruses (HBV,HCV),and 136 with cryptogenic cirrhosis. Mutations of the HFE gene were analyzed by PCR-RE. hundred controls were screened for iron status and the mutations. RESULTS:Seventeen patients with CLD showed evidence of iron overload. Fifteen cases of iron overload had cryptogenic cirrhosis and two had ALD. None of the controls showed iron overload. We did not find any individual with 282Y or 65C either in the cases or in the controls. The prevalence of H63D heterozygosity was 12% in normal individuals,14.8% in 236 patients (16.9% in NASH,13.6% in ALD,26.3% in viral and 12.5% in cryptogenic cirrhosis) and the overall prevalence was 13.98%. Only two of the 17 patients with primary iron overload were heterozygous for H63D. One patient with NASH and one normal individual who were homozygous for H63D showed no iron overload.CONCLUSION:Primary iron overload in Indians is nonHFE type,which is different from that in Europeans and further molecular studies are required to determine the defect in various iron regulatory genes. | Barjinderjit Kaur Dhillon Reena Das Gurjeewan Garewal Yogesh Chawla RK Dhiman Ashim Das Ajay Duseja GR Chandak | 2007 | World Journal of Gastroenterology2007，13，21： | 5 |
| 7 | Tailored PEDOT:PSS hole transport layer for higher performance in perovskite solar cells: Enhancement of electrical and optical properties with improved morphology显示文摘Precise control over the charge carrier dynamics throughout the device can result in outstanding performance of perovskite solar cells(PSCs).Poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate)(PEDOT:PSS)is the most actively studied hole transport material in p-i-n structured PSCs.However,charge transport in the PEDOT:PSS is limited and inefficient because of its low conductivity with the presence of the weak ionic conductor PSS.In addition,morphology of the underlying PEDOT:PSS layer in PSCs plays a crucial role in determining the optoelectronic quality of the active perovskite absorber layer.This work is focused on realization of a non-wetting conductive surface of hole transport layer suitable for the growth of larger perovskite crystalline domains.This is accomplished by employing a facile solventengineered(ethylene glycol and methanol)approach resulting in removal of the predominant PSS in PEDOT:PSS.The consequence of acquiring larger perovskite crystalline domains was observed in the charge carrier dynamics studies,with the achievement of higher charge carrier lifetime,lower charge transport time and lower transfer impedance in the solvent-engineered PEDOT:PSS-based PSCs.Use of this solventengineered treatment for the fabrication of MAPbI3 PSCs greatly increased the device stability witnessing a power conversion efficiency of 18.18%,which corresponds to^37%improvement compared to the untreated PEDOT:PSS based devices. | Khan Mamun Reza Ashim Gurung Behzad Bahrami Sally Mabrouk Hytham Elbohy Rajesh Pathak Ke Chen Ashraful Haider Chowdhury Md Tawabur Rahman Steven Letourneau Hao-Cheng Yang Gopalan Saianand Jeffrey WElam Seth BDarling Qiquan Qiao | 2020 | Journal of Energy Chemistry2020，29，5： | 4 |
| 8 | Bone graft substitutes for spine fusion: A brief review显示文摘Bone graft substitutes are widely used in the field of orthopedics and are extensively used to promote vertebral fusion. Fusion is the most common technique in spine surgery and is used to treat morbidities and relieve discomfort. Allograft and autograft bone substitutes are currently the most commonly used bone grafts to promote fusion. These approaches pose limitations and present complications to the patient. Numerous alternative bone graft substitutes are on the market or have been developed and proposed for application. These options have attempted to promote spine fusion by enhancing osteogenic properties. In this review, we reviewed biology of spine fusion and the current advances in biomedical materials and biological strategies for application in surgical spine fusion. Our findings illustrate that, while many bone graft substitutes perform well as bone graft extenders, only osteoinductive proteins(recombinant bone morphogenetic proteins-2 and osteogenic protein-1) provide evidence for use as both bone enhancers and bone substitutes for specific types of spinal fusion. Tissue engineered hydrogels, synthetic polymer composites and viral based gene therapy also holds the potential to be used for spine fusion in future, though warrants further investigation to be used in clinical practice. | Ashim Gupta Nitin Kukkar Kevin Sharif Benjamin J Main Christine E Albers Saadiq F El-Amin Ⅲ | 2015 | World Journal of Orthopedics2015，6，6： | 4 |
| 9 | Effect of water regimes and organic matters on transport of arsenic in summer rice (Oryza sativa L.)显示文摘The arsenic contamination in soil-water-plant systems is a major concern of where, the groundwater is being contaminated with arsenic (above 0.01 mg/L) in the Indian subcontinent. The study was conducted with organic matter to find out the reducing effect on arsenic load to rice (cv. Khitish). It was observed that intermittent ponding reduced arsenic uptake (23.33% in root, 13.84% in shoot and 19.84% in leaf) at panicle initiation stage, instead of continuous ponding. A decreasing trend of arsenic accumulation (root > straw > husk > whole grain > milled grain) was observed in different plant parts at harvest. Combined applications of lathyrus + vermicompost + poultry manure reduced arsenic transport in plant parts (root, straw, husk, whole grains and milled grain) which was significantly at par (p > 0.05) with chopped rice straw (5 tons/ha ) + lathyrus green manuring (5 tons/ha) in comparison to control and corresponding soils. A significant negative correlation of arsenic with phosphorus (grain P with arsenic in different parts R 2 = 0.627-0.726 at p > 0.01) was observed. Similarly, soil arsenic had a negative correlation with soil available phosphorus (R 2 = 0.822 at p > 0.001) followed by soil nitrogen (R 2 = 0.762 at p > 0.01) and soil potassium (R 2 = 0.626 at p > 0.01). Hence, effective management of contaminated irrigation water along with organic matter could reduce the arsenic build up to plants and soil. | Sefaur Rahaman Ashim Chandra Sinha Dibyendu Mukhopadhyay | 2011 | Journal of Environmental Sciences2011，23，4： | 3 |
| 10 | Role of <sup>18</sup> F ‐fluorodeoxyglucose positron emission tomography/computed tomography in the characterization of pancreatic masses: Experience from tropics显示文摘 | Sampath Santhosh Bhagwant Rai Mittal Deepak Bhasin Radhika Srinivasan Surinder Rana Ashim Das Ritambhra Nada Anish Bhattacharya Rajesh Gupta Rakesh Kapoor | 2013 | J Gastroenterol Hepatol2013，，2： | 2 |
| 11 | Indian patients with nonalcoholic fatty liver disease presenting with raised transaminases are different at presentation显示文摘 | Ajay Duseja Ashim Das Radha Krishan Dhiman Yogesh Kumar Chawla Reena Das Sanjay Bhadada Ravinder Sialy Kiran Kumar Thumburu Anil Bhansali Naveen Kalra | 2007 | World Journal of Gastroenterology2007，13，4： | 2 |
| 12 | Overexpression of microRNA‐122 enhances in vitro hepatic differentiation of fetal liver‐derived stem/progenitor cells显示文摘 | Ravi Doddapaneni Yogesh K. Chawla Ashim Das Jasvinder Kaur Kalra Sujata Ghosh Anuradha Chakraborti | 2013 | Biochem2013，，7： | 2 |
| 13 | Spectroscopic studies of nile red in organic solvents and polymers显示文摘 | Ashim Kumar Dutta Kenji Kamada Koji Ohta | 1996 | Journal of Photochemistry & Photobiology A: Chemistry1996，，1： | 1 |
| 14 | Molecular evidence and functional expression ofmultidrug resistanceassoeiated protein (MRP) in rabbit corneal epithelial cells显示文摘 | Pradeep K K Dananjay P Ashim K M | 2007 | Exp Eye Res2007，84，1： | 1 |
| 15 | Insulin Resistance Is Common in Patients with Predominantly Genotype 3 Chronic Hepatitis C显示文摘 | Ajay Duseja R. K. Dhiman Yogesh Chawla Kiran K. Thumburu Amit Kumar Ashim Das Sanjay Bhadada Anil Bhansali | 2009 | Digestive Diseases and Sciences2009，，8： | 1 |
| 16 | Fiber Bragg gratings in structural health monitoring - Present status and applieations显示文摘 | Mousumi Majumder Tarun Kumar Gangopadhyay Ashim Kumar Chakraborty | 2008 | Sens Actuators A: Phys2008，147，： | 1 |
| 17 | Effect of hydroxypropyl beta cyclodextrin complexation on aqueous solubility, stability, and corneal permeation of acyl ester prodrugs of gancicl ovir显示文摘 | Giridhar S Tirucherai Ashim K | 2003 | AAPS Pharm Sci Tech2003，4，3： | 1 |
| 18 | Energy efficient zone division multihop hierarchical clustering algorithm for load balancing in wireless sensor network显示文摘 | ASHIM K G ANUPAM K B DR M A K | 2011 | International Journal of Advanced Computer Science and Application2011，2，12： | 1 |
| 19 | C or relat ion between n eur om aging and out come in perivenpricu lar leukomalacia: diagn os tic crit eria显示文摘 | H ashim ot o K H asegaw a H Kida Y e t al | 2001 | Pediat r Int2001，43，3： | 1 |
| 20 | Alcoholic turmeric extract simultaneously activating murine lymphocytes and inducing apoptosis of Ehlrich ascitic carcinoma cells显示文摘 | ASHIM K C HADIDA Y | 2005 | International Immunopharmacology2005，5，10： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员