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Abstract
In this study, we consider the asymptotic behaviour of the first discrete Painlevé equation in the limit as the independent variable becomes large. Using an asymptotic series expansion, we identify two types of solutions which are pole-free within some sector of the complex plane containing the positive real axis. Using exponential asymptotic techniques, we determine Stokes phenomena effects present within these solutions, and hence the regions in which the asymptotic series expression is valid. From a careful analysis of the switching behaviour across Stokes lines, we find that the first type of solution is uniquely defined, while the second type contains two free parameters, and that the region of validity may be extended for appropriate choice of these parameters.
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Rana R, Dalal J, Singh D, Kumar N, Hanif S, Joshi N, Chhikara MK. Development and characterization of Haemophilus influenzae type b conjugate vaccine prepared using different polysaccharide chain lengths. Vaccine 2015; 33:2646-54. [PMID: 25907408 DOI: 10.1016/j.vaccine.2015.04.031] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 04/04/2015] [Accepted: 04/11/2015] [Indexed: 10/23/2022]
Abstract
Capsular polysaccharide conjugates of Haemophilus influenzae type b (Hib) are important components of several mono- or multi-valent childhood vaccines. However, their access to the most needy people is limited due to their high cost. As a step towards developing a cost effective and more immunogenic Hib conjugate vaccine, we present a method for the preparation of Hib capsular polysaccharide (PRP)-tetanus toxoid (TT) conjugates using optimized PRP chain length and conjugation conditions. Reactive aldehyde groups were introduced into the polysaccharides by controlled periodate oxidation of the native polysaccharide, which were subsequently covalently linked to hydrazide derivatized tetanus toxoid by means of reductive amination. Native polysaccharides were reduced to average 100 or 50kDa polysaccharide and 10kDa oligosaccharides in a controlled manner. Various conjugates were prepared using Hib polysaccharide and oligosaccharide yielding conjugates with polysaccharide to protein ratios in the range of 0.25-0.5 (w/w) and free saccharide levels of less than 10%. Immunization of Sprague Dawley rats with the conjugates elicited specific antibodies to PRP. The low molecular weight PRP-TT conjugates were found to be more immunogenic as compared to their high molecular weight counterparts and the PRP-TT reference vaccine.
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Joshi N, Basak S, Kundu S, De G, Mukhopadhyay A, Chattopadhyay K. Attenuation of the early events of α-synuclein aggregation: a fluorescence correlation spectroscopy and laser scanning microscopy study in the presence of surface-coated Fe3O4 nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:1469-78. [PMID: 25561279 DOI: 10.1021/la503749e] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The aggregation of α-synuclein (A-syn) has been implicated in the pathogenesis of Parkinson's disease (PD). Although the early events of aggregation and not the matured amyloid fibrils are believed to be responsible for the toxicity, it has been difficult to probe the formation of early oligomers experimentally. We studied the effect of Fe3O4 nanoparticle (NP) in the early stage of aggregation of A-syn using fluorescence correlation spectroscopy (FCS) and laser scanning microscopy. The binding between the monomeric protein and NPs was also studied using FCS at single-molecule resolution. Our data showed that the addition of bare Fe3O4 NPs accelerated the rate of early aggregation, and it did not bind the monomeric A-syn. In contrast, L-lysine (Lys)-coated Fe3O4 NPs showed strong binding with the monomeric A-syn, inhibiting the early events of aggregation. Lys-coated Fe3O4 NPs showed significantly less cell toxicity compared with bare Fe3O4 NPs and can be explored as a possible strategy to develop therapeutic application against PD. To the best of our knowledge, this report is the first example of using a small molecule to attenuate the early (and arguably the most relevant in terms of PD pathogenesis) events of A-syn aggregation.
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79
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Joshi N, Kopec AK, O'Brien KM, Towery KL, Cline-Fedewa H, Williams KJ, Copple BL, Flick MJ, Luyendyk JP. Coagulation-driven platelet activation reduces cholestatic liver injury and fibrosis in mice. J Thromb Haemost 2015; 13:57-71. [PMID: 25353084 PMCID: PMC4487795 DOI: 10.1111/jth.12770] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Accepted: 10/17/2014] [Indexed: 01/14/2023]
Abstract
BACKGROUND The coagulation cascade has been shown to participate in chronic liver injury and fibrosis, but the contribution of various thrombin targets, such as protease activated receptors (PARs) and fibrin(ogen), has not been fully described. Emerging evidence suggests that in some experimental settings of chronic liver injury, platelets can promote liver repair and inhibit liver fibrosis. However, the precise mechanisms linking coagulation and platelet function to hepatic tissue changes following injury remain poorly defined. OBJECTIVES To determine the role of PAR-4, a key thrombin receptor on mouse platelets, and fibrin(ogen) engagement of the platelet αII b β3 integrin (αIIb β3 ) in a model of cholestatic liver injury and fibrosis. METHODS Biliary and hepatic injury was characterized following 4 week administration of the bile duct toxicant α-naphthylisothiocyanate (ANIT) (0.025%) in PAR-4-deficient mice, mice expressing a mutant form of fibrin(ogen) incapable of binding integrin αII b β3 (Fibγ(Δ5) ), and wild-type mice. RESULTS Elevated plasma thrombin-antithrombin and serotonin levels, hepatic fibrin deposition, and platelet accumulation in liver accompanied hepatocellular injury and fibrosis in ANIT-treated wild-type mice. PAR-4 deficiency reduced plasma serotonin levels, increased serum bile acid concentration, and exacerbated ANIT-induced hepatocellular injury and peribiliary fibrosis. Compared with PAR-4-deficient mice, ANIT-treated Fibγ(Δ5) mice displayed more widespread hepatocellular necrosis accompanied by marked inflammation, robust fibroblast activation, and extensive liver fibrosis. CONCLUSIONS Collectively, the results indicate that PAR-4 and fibrin-αII b β3 integrin engagement, pathways coupling coagulation to platelet activation, each exert hepatoprotective effects during chronic cholestasis.
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MESH Headings
- 1-Naphthylisothiocyanate
- Animals
- Antithrombin III
- Bile Acids and Salts/blood
- Blood Coagulation/genetics
- Blood Platelets/metabolism
- Chemical and Drug Induced Liver Injury/blood
- Chemical and Drug Induced Liver Injury/genetics
- Chemical and Drug Induced Liver Injury/pathology
- Chemical and Drug Induced Liver Injury/prevention & control
- Cholestasis/blood
- Cholestasis/chemically induced
- Cholestasis/genetics
- Cholestasis/pathology
- Cholestasis/prevention & control
- Fibrinogens, Abnormal/genetics
- Fibrinogens, Abnormal/metabolism
- Genotype
- Liver/metabolism
- Liver/pathology
- Liver Cirrhosis, Experimental/blood
- Liver Cirrhosis, Experimental/chemically induced
- Liver Cirrhosis, Experimental/genetics
- Liver Cirrhosis, Experimental/pathology
- Liver Cirrhosis, Experimental/prevention & control
- Male
- Mice, Inbred C57BL
- Mice, Knockout
- Mutation
- Necrosis
- Peptide Hydrolases/blood
- Phenotype
- Platelet Activation/genetics
- Platelet Glycoprotein GPIIb-IIIa Complex/metabolism
- Receptors, Thrombin/deficiency
- Receptors, Thrombin/genetics
- Serotonin/blood
- Signal Transduction
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80
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Jain V, Joshi N, Sidhu M, Kalicinsky C, Pun T. Penicillin allergies: referral and management practices of anesthesiologists. Allergy Asthma Clin Immunol 2014. [PMCID: PMC4304046 DOI: 10.1186/1710-1492-10-s2-a20] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
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81
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Reeves BD, Joshi N, Campanello GC, Hilmer JK, Chetia L, Vance JA, Reinschmidt JN, Miller CG, Giedroc DP, Dratz EA, Singel DJ, Grieco PA. Conversion of S-phenylsulfonylcysteine residues to mixed disulfides at pH 4.0: utility in protein thiol blocking and in protein-S-nitrosothiol detection. Org Biomol Chem 2014; 12:7942-56. [PMID: 24986430 PMCID: PMC4365953 DOI: 10.1039/c4ob00995a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A three step protocol for protein S-nitrosothiol conversion to fluorescent mixed disulfides with purified proteins, referred to as the thiosulfonate switch, is explored which involves: (1) thiol blocking at pH 4.0 using S-phenylsulfonylcysteine (SPSC); (2) trapping of protein S-nitrosothiols as their S-phenylsulfonylcysteines employing sodium benzenesulfinate; and (3) tagging the protein thiosulfonate with a fluorescent rhodamine based probe bearing a reactive thiol (Rhod-SH), which forms a mixed disulfide between the probe and the formerly S-nitrosated cysteine residue. S-Nitrosated bovine serum albumin and the S-nitrosated C-terminally truncated form of AdhR-SH (alcohol dehydrogenase regulator) designated as AdhR*-SNO were selectively labelled by the thiosulfonate switch both individually and in protein mixtures containing free thiols. This protocol features the facile reaction of thiols with S-phenylsulfonylcysteines forming mixed disulfides at mild acidic pH (pH = 4.0) in both the initial blocking step as well as in the conversion of protein-S-sulfonylcysteines to form stable fluorescent disulfides. Labelling was monitored by TOF-MS and gel electrophoresis. Proteolysis and peptide analysis of the resulting digest identified the cysteine residues containing mixed disulfides bearing the fluorescent probe, Rhod-SH.
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82
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Sahasrabudhe P, Panse N, Baheti B, Jadhav A, Joshi N, Chandanwale A. Reconstruction of complex soft-tissue defects around the knee joint with distally based split vastus lateralis musculocutaneous flap: a new technique. J Plast Reconstr Aesthet Surg 2014; 68:35-9. [PMID: 25448368 DOI: 10.1016/j.bjps.2014.09.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2013] [Revised: 06/13/2014] [Accepted: 09/16/2014] [Indexed: 10/24/2022]
Abstract
AIMS The aim of this study was to report our experience of using distally based spilt vastus lateralis musculocutaneous flaps for soft-tissue defects around the knee joint - a new technique. MATERIAL AND METHODS Cadaver dissection studies were conducted in three cadavers to demonstrate perforators entering the lower third of the vastus lateralis muscle arising from the superior lateral genicular artery. Its application in eight clinical cases for the reconstruction of soft-tissue defects around the knee joint is reported. RESULTS Seven out of eight flaps survived well without any flap loss. One flap with a skin island measuring 12 × 20 cm suffered a loss of 2 cm distally. This was later treated with skin grafting. Six out of eight donor sites were closed primarily. Six patients achieved full functional range of motion by 3 months. One patient had a 10° limitation of knee extension. One patient had foot drop due to primary injury and walks with a limping gait. CONCLUSIONS This flap is a new reconstructive option for knee defects. It can reach distally up to the tibial tuberosity and does not require an intraoperative change of position. The donor site can be closed primarily and is hidden inside the clothing. The function of the knee is not affected as the majority of the muscle is kept in continuity.
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83
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Joshi N, Rawat K, Bohidar HB. Coexistence of iso-nonergodic laponite gel and glass in 1-methyl-3-octylimidazolium chloride ionic liquid solutions. J Phys Chem B 2014; 118:6329-38. [PMID: 24821007 DOI: 10.1021/jp5032916] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We report unique colloidal gel-glass coexistence in aqueous laponite dispersion (2% w/v) in the presence of 1-methyl-3-octylimidazolium chloride ionic liquid (IL, [C8mim][Cl], concentration 0.01 to 0.05% w/v), where both of the phases had identical nonergodicity and were dynamically interactive. With aging, the nascent heterogeneous dispersion exhibited spontaneous two-phase separation, and the time-dependent relative viscosity followed: η(r) = |ε|(-k) where ε = (t - t(g))/t(g) and t(g) is the time required for the system to get arrested, with k decreasing from 3.13 to 2.54 as the IL concentration was increased from 0 to 0.03% (w/v), implying slowing down of the arrest kinetics. This time was measured from viscosity and rheology studies, revealing the formation of IL-mediated finite size colloidal networks on a time scale of ~4 × 10(3) s, whereas the dispersion developed a large viscosity one decade in time later (~4 × 10(4) s). Homogeneous transparent upper phase was an entropic glass and exhibited substantial storage modulus gain (300-3000 Pa) with an increase in IL concentration (0 to 0.05% (w/v)). The translucent lower gel phase had a much higher storage modulus. Dynamic light scattering measured bimodal relaxation time of concentration fluctuations. The degree of nonergodicity in the two phases was approximately the same, implying laponite-IL cluster exchange across the interface (identical slow-mode diffusivity). In summary, IL-induced first-order phase separation in laponite dispersion produced a homogeneous colloidal gel coexisting with a glass not commonly observed in soft matter systems. This implied that the two phases were dynamically coupled on long time scales, whereas their short-time behavior was distinctively different.
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84
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Joshi N, Mallick S, Haresh KP, Gandhi A, Prabhakar R, Laviraj MA, Sharma DN, Julka PK, Rath GK. Modern chemoradiation practices for malignant tumors of the trachea: An institutional experience. Indian J Cancer 2014; 51:241-244. [PMID: 25494113 DOI: 10.4103/0019-509x.146743] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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85
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Shackelford R, Heldmann M, Eskandari F, Joshi N, Browning J, Maxwell N, Coteligam J. Marked retroperitoneal lymphadenopathy in hairy cell leukemia: a case report. Case Rep Oncol 2013; 6:493-6. [PMID: 24163667 PMCID: PMC3806691 DOI: 10.1159/000355434] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Hairy cell leukemia (HCL) is uncommonly associated with lymphadenopathy, while retroperitoneal lymphadenopathy is extremely uncommon. We report on a patient with a 12-year history of HCL who developed painless jaundice and ascites, accompanied by positional discomfort with persistent nausea. Computed tomography examination revealed 2 large retroperitoneal masses, which at autopsy consisted of HCL with focally intermixed pancreatic and peripancreatic tissue. Lymphadenopathy was not identified above the diaphragm or below the aortic bifurcation. No vasculitis or an unusual HCL histology was identified. As previous reports, our findings suggest that HCL with massive lymphadenopathy has a specific site predilection, but it is not necessarily accompanied by vasculitis or an unusual histology.
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86
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Jewrajka SK, Reddy A, Rana HH, Mandal S, Khullar S, Haldar S, Joshi N, Ghosh PK. Use of 2,4,6-pyridinetricarboxylic acid chloride as a novel co-monomer for the preparation of thin film composite polyamide membrane with improved bacterial resistance. J Memb Sci 2013. [DOI: 10.1016/j.memsci.2013.03.047] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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87
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Jain RM, Mody K, Joshi N, Mishra A, Jha B. Production and structural characterization of biosurfactant produced by an alkaliphilic bacterium, Klebsiella sp.: evaluation of different carbon sources. Colloids Surf B Biointerfaces 2013; 108:199-204. [PMID: 23545089 DOI: 10.1016/j.colsurfb.2013.03.002] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2013] [Revised: 03/01/2013] [Accepted: 03/01/2013] [Indexed: 10/27/2022]
Abstract
The potential of an alkaliphilic bacterium Klebsiella sp. strain RJ-03, to utilize different carbon sources for the production of an extracellular biosurfactant was evaluated. Among the several carbon substrates tested, production of the crude biosurfactant was found to be the highest with starch (10.1±0.11g/L) followed by sucrose (5.1±0.11g/L), xylose (3.25±0.08g/L), galactose (3.1±0.16g/L) glucose (2.75±0.11g/L) and fructose (2.62±0.07g/L). The crude biosurfactant production was done using starch, sucrose, xylose, galactose and glucose containing medium, that exhibited significantly high viscosity, emulsification activity and maximum reduction in surface tension as compared to those obtained from fructose and maltose. The carbon source has significant effect on the quantity as well as the quality of biosurfactant production. The chemical characteristics of purified biosurfactant was compared by NMR, FT-IR, SEM, GPC, MALDI TOF-TOF MS, GC-MS, TG and DSC analysis, indicating variation in the functional groups, bonds, elements, monosaccharide composition, molecular mass and thermo stability.
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88
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Tse DML, Joshi N, Anderson EM, Brady M, Gleeson FV. A computer-aided algorithm to quantitatively predict lymph node status on MRI in rectal cancer. Br J Radiol 2012; 85:1272-8. [PMID: 22919008 DOI: 10.1259/bjr/13374146] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
OBJECTIVE The aim of this study was to demonstrate the principle of supporting radiologists by using a computer algorithm to quantitatively analyse MRI morphological features used by radiologists to predict the presence or absence of metastatic disease in local lymph nodes in rectal cancer. METHODS A computer algorithm was developed to extract and quantify the following morphological features from MR images: chemical shift artefact; relative mean signal intensity; signal heterogeneity; and nodal size (volume or maximum diameter). Computed predictions on nodal involvement were generated using quantified features in isolation or in combinations. Accuracies of the predictions were assessed against a set of 43 lymph nodes, determined by radiologists as benign (20 nodes) or malignant (23 nodes). RESULTS Predictions using combinations of quantified features were more accurate than predictions using individual features (0.67-0.86 vs 0.58-0.77, respectively). The algorithm was more accurate when three-dimensional images were used (0.58-0.86) than when only middle image slices (two-dimensional) were used (0.47-0.72). Maximum node diameter was more accurate than node volume in representing the nodal size feature; combinations including maximum node diameter gave accuracies up to 0.91. CONCLUSION We have developed a computer algorithm that can support radiologists by quantitatively analysing morphological features of lymph nodes on MRI in the context of rectal cancer nodal staging. We have shown that this algorithm can combine these quantitative indices to generate computed predictions of nodal status which closely match radiological assessment. This study provides support for the feasibility of computer-assisted reading in nodal staging, but requires further refinement and validation with larger data sets.
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89
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Kim JH, Charkravarti A, Wang M, Aldape K, Sulman E, Bredel M, Hegi M, Gilbert M, Curran W, Werner-Wasik M, Mehta M, van den Bent MJ, Brandes AA, Taphoorn MJ, Kros JM, Kouwenhoven MC, Delattre JY, Bernsen HJ, Frenay M, Tijssen CC, Grisold W, Sipos L, Enting RH, French PJ, Dinjens WN, Vecht CJ, Allgeier A, Lacombe D, Gorlia T, Xuan KH, Chang JH, Oh MC, Kim EH, Kang SG, Cho J, Kim SH, Kim DS, Kim SH, Seo CO, Lee KS, Kim MM, Dabaja BS, Jeffrey Medeiros L, Allen P, Kim S, Fowler N, Peereboom DM, Seidman AD, Tabar V, Weil RJ, Thorsheim HR, Smith QR, Lockman PR, Steeg PS, Mallick S, Joshi N, Gandhi A, Jha P, Suri V, Julka PK, Sarkar C, Sharma D, Rath GK, Blumenthal DT, Talianski A, Fishniak L, Bokstein F, Taal W, Walenkamp AM, Taphoorn MJ, Beerepoot L, Hanse M, Buter J, Honkoop A, Groenewegen G, Boerman D, Jansen RL, van den Berkmortel FW, Brandsma D, Kros JM, Bromberg JE, van Heuvel I, Smits M, van der Holt B, Vernhout R, van den Bent M, Matienzo L, Batara J, Torcuator R, Yovino S, Balmanoukian A, Ye X, Campian J, Hess A, Fuchs E, Grossman SA, Leonard AK, Wolff J, Blanchard M, Laack N, Foote R, Brown P, Pan E, Yu D, Yue B, Potthast L, Smith P, Chowdhary S, Chamberlain M, Rockhill J, Sales L, Halasz L, Stewart R, Phillips M, Mathew M, Ott P, Rush S, Donahue B, Pavlick A, Golfinos J, Parker E, Huang P, Narayana A, Clark S, Carlson JA, Gaspar LE, Ney DE, Chen C, Kavanagh B, Damek DM, Martinez NL, DeAngelis LM, Abrey LE, Omuro A, Zhu JJ, Esquenazi-Levy Y, Friedman ER, Tandon N, Mathew M, Hitchen C, Dewyngaert K, Narayana A. CLIN-MEDICAL + RADIATION THERAPIES. Neuro Oncol 2012. [DOI: 10.1093/neuonc/nos227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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90
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Singh PM, Shrestha DM, Gautam SC, Swar SB, Joshi N. Assessment of characteristics of patient with delirium tremens. NEPAL MEDICAL COLLEGE JOURNAL : NMCJ 2012; 14:216-218. [PMID: 24047019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Delirium tremens is the severe form of alcohol withdrawal. It carries a certain degree of mortality and there has been and advancement in the understanding of pathophysiology and risk factors for the development of the condition. This prospective study is carried out to study the characteristic of the patient of delirium tremens in our setting using ICD-10 diagnostic criteria. Thirty seven cases of delirium tremens with majority of males and of all hill origin people were identified. Patients with delirium tremens has been using alcohol for average of 24.8 years with an average intake of around 2.2 litres per day. Most of the patient has seizure and similar episodes in past and using alcohol from morning time.
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91
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Albertson A, Joshi N, Fuentes K, Holschuh N, Bapna A, Borse H. Soup Consumption in the United States: Associations with Nutrient Intakes and Body Measures in Adults. J Acad Nutr Diet 2012. [DOI: 10.1016/j.jand.2012.06.087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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92
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Sharma D, Julka P, Mallick S, Gandhi A, Joshi N, Rath G. EP-1036 POSTOPERATIVE TREATMENT OF GLIOBLASTOMA WITH RADIATION THERAPY PLUS CONCOMITANT AND ADJUVANT TEMOZOLOMIDE. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)71369-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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93
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Dweck MR, Jones C, Joshi N, White A, Fletcher AM, Richardson H, McKillop G, van Beek EJR, Boon NA, Rudd JHF, Newby DE. B Assessment of valvular calcification and inflammation by positron emission tomography. BRITISH HEART JOURNAL 2012. [DOI: 10.1136/heartjnl-2012-301877a.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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94
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MacGillivray T, Richards J, Joshi N, Lang N, Barnes G, Semple S, Henriksen P, Mckillop G, Mirsadraee S, Fox K, Newby DE, Alam SR. 084 In vivo assessment of cellular inflammation following acute myocardial infarction. BRITISH HEART JOURNAL 2012. [DOI: 10.1136/heartjnl-2012-301877b.84] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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95
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Mukhopadhyay A, Joshi N, Chattopadhyay K, De G. A facile synthesis of PEG-coated magnetite (Fe3O4) nanoparticles and their prevention of the reduction of cytochrome c. ACS APPLIED MATERIALS & INTERFACES 2012; 4:142-9. [PMID: 22111689 DOI: 10.1021/am201166m] [Citation(s) in RCA: 114] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We report here a facile and green synthetic approach to prepare magnetite (Fe(3)O(4)) nanoparticles (NPs) with magnetic core and polyethylene glycol (PEG) surface coating. The interaction of the bare and PEG-coated Fe(3)O(4) NPs with cytochrome c (cyt c, an important protein with direct role in the electron transfer chain) is also reported in this study. With ultrasonication as the only peptization method and water as the synthesis medium, this method is easy, fast, and environmentally benign. The PEG coated NPs are highly water dispersible and stable. The bare NPs have considerable magnetism at room temperature; surface modification by PEG has resulted in softening the magnetization. This approach can very well be applicable to prepare biocompatible, surface-modified soft magnetic materials, which may offer enormous utility in the field of biomedical research. Detailed characterizations including XRD, FTIR, TG/DTA, TEM, and VSM of the PEG-coated Fe(3)O(4) NPs were carried out in order to ensure the future applicability of this method. Although the interaction of bare NPs with cyt c shows reduction of the protein, efficient surface modification by PEG prevents its reduction.
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96
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Joshi N, Bhattacharya M, Yadav S, Rustogi D. Cranial nerve palsies in typhoid fever: report of three cases. ACTA ACUST UNITED AC 2011; 31:255-8. [PMID: 21781422 DOI: 10.1179/1465328111y.0000000023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Neurological manifestations of enteric fever are well known. However, isolated cranial nerve palsies are rare. A 4-year-old boy and two girls aged 5 and 11 years with culture-proven typhoid fever are described, two of whom developed palatal palsy and the other sixth cranial nerve palsy. Following treatment, there was complete resolution of the cranial nerve palsies within 5-7 weeks. While palatal palsy is reported rarely, isolated sixth cranial nerve palsy associated with typhoid has not been reported previously.
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97
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Mallick S, Bisaws A, Joshi N, Pandit S, Mohanti B, Julka R, Rath G. 8531 POSTER Esthesioneuroblastoma – Clinical Experience From a Regional Cancer Centre in North India. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)72173-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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98
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Dave PV, Patel ND, Rade K, Solanki RN, Patel PG, Patel P, Joshi N, Modi B, Pujara K. Proficiency panel testing--a reliable tool in external quality assessment of sputum smear microscopy services in Gujarat, India. Indian J Tuberc 2011; 58:113-119. [PMID: 21941950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
OBJECTIVE To assess the proficiency of Senior TB Laboratory Supervisors (STLSs) and district level Laboratory Technicians (LTs) in sputum smear microscopy. METHOD Intermediate Reference Laboratory (IRL), Ahmedabad had manufactured and validated Proficiency Panel Testing slides from sputum samples, made On Site Evaluation (OSE) visits of District TB Centres (DTCs) in two rounds, and conducted Proficiency Panel Testing of STLSs & DTC-LTs from January 2005 to June 2009. RESULTS High level of concordance in Z-N smear grading was found between Microbiologist and district laboratory staff. DTC readers reported overall consistency level of more than 98% in Z-N grade agreement during both the IRL, EQA, OSE visits. The tendency to over-grade the panel slides was much higher (more than 22%) as compared to under-grade (less than 2%) them in "correct slides". High False Positive (HFP) error was not observed in the present study. CONCLUSION Laboratory supervisor's proficiency can be quickly assessed by Proficiency Panel Testing, under multi-level quality assurance network system of sputum smear microscopy in public health programmes like the RNTCP. Proficiency Panel Testing is highly replicable and reproducible tool for quick and reliable assessment of proficiency of the staff and it can be made more effective by raising the proportion of lower grade positive slides in panel set of each reader. DTC readers' overall agreement level of more than 98% in Z-N grade suggests high level of precision and excellent consistency during both the IRL, EQA, OSE rounds. It is concluded that even for a large network of sputum smear microscopy centres under public health programmes like the RNTCP in order to take corrective action, Proficiency Panel Testing can be effectively used for quick identification of suboptimal- technical performance of the supervisory staff.
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Dixit LP, Gurung CK, Gurung N, Joshi N. Reasons underlying the extraction of permanent teeth in patients attending Peoples Dental College and Hospital. NEPAL MEDICAL COLLEGE JOURNAL : NMCJ 2010; 12:203-206. [PMID: 21744759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Extraction of permanent teeth is common in Nepal. The study was undertaken to determine the causes and pattern of missing permanent teeth among patients attending Peoples Dental College and Hospital (PDCH) and to see if there is any association between variables like socio economic status, patient education level, dental visit and extraction of permanent teeth. A prospective cross sectional survey was carried out in patients attending the Department of Oral Surgery in PDCH between August 2006 and October 2006. The data was collected by trained clinician through clinical examination and using semi- structured questionnaires. Computer software SPSS 15 was used for statistical analysis. In age groups < or = 30 years, 90.0% it was reported that Dental caries was the most common reason for extraction of teeth. In age groups > 30 years, 55.6% periodontal disease was the most common reason for extraction of teeth. Distribution by type of teeth and dental disease was highly significant where. Dental caries was the reason for extraction of first permanent molar. Distribution by education level and visit to dentist was highly significant. About 93.1% of the people who were illiterate visited the dental surgeon while in pain and 76.0% of the university level graduates visited the dentist while in pain. Caries and its sequel remain the most important cause of tooth loss throughout adult life along with periodontal diseases at later stages.
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Greig A, Jones S, Haylock C, Joshi N, McLellan G, Clarke P, Kirkpatrick W. Reconstruction of the exenterated orbit with osseointegrated implants. J Plast Reconstr Aesthet Surg 2010; 63:1656-65. [DOI: 10.1016/j.bjps.2009.04.023] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2009] [Revised: 04/17/2009] [Accepted: 04/23/2009] [Indexed: 11/15/2022]
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