satish kumar - Academia.edu (original) (raw)
Papers by satish kumar
Indian Journal of Otolaryngology
An audiological survey of 2000 children of 2 schools, one catering to the children from economica... more An audiological survey of 2000 children of 2 schools, one catering to the children from economically weaker section and other from effluent section has been done. The incidence of hearing loss was found to be 12.25%. The incidence of conductive loss was 99.59% and neurosensory loss was 0.41%. It was significantly higher in economically weaker section children, than that of
International Journal of Molecular Sciences
miRNA regulates the expression of protein coding genes and plays a regulatory role in human devel... more miRNA regulates the expression of protein coding genes and plays a regulatory role in human development and disease. The human iPSCs and their differentiated progenies provide a unique opportunity to identify these miRNA-mediated regulatory mechanisms. To identify miRNA–mRNA regulatory interactions in human nervous system development, well characterized NSCs were differentiated from six validated iPSC lines and analyzed for differentially expressed (DE) miRNome and transcriptome by RNA sequencing. Following the criteria, moderated t statistics, FDR-corrected p-value ≤ 0.05 and fold change—absolute (FC-abs) ≥2.0, 51 miRNAs and 4033 mRNAs were found to be significantly DE between iPSCs and NSCs. The miRNA target prediction analysis identified 513 interactions between 30 miRNA families (mapped to 51 DE miRNAs) and 456 DE mRNAs that were paradoxically oppositely expressed. These 513 interactions were highly enriched in nervous system development functions (154 mRNAs; FDR-adjusted p-valu...
Clinical Advances in Periodontics
Natural product research, Jan 19, 2018
Chloroform extract from the leaves of Turraea vogelii Hook f. ex Benth demonstrated cytotoxic act... more Chloroform extract from the leaves of Turraea vogelii Hook f. ex Benth demonstrated cytotoxic activity against a chronic myelogenous leukemia cell, K-562 with ICof 14.27 μg/mL, while chloroform, ethyl acetate and methanol extracts from the stem of the plant inhibited K-562 cells growth with ICof 19.50, 24.10 and 85.40 μg/mL respectively. Bioactive chloroform extract of Turraea vogelii leaves affords two triterpenoids: oleana-12,15,20-trien-3β-ol (1), and oleana-11,13-dien-3β,16α,28-triol (2), with six fatty esters, ethyl hexaeicos-5-enoate (3), 3-hydroxy-1,2,3-propanetriyltris(tetadecanoate) (4), 1,2,3-propanetriyl(7Z,7'Z,7''Z)tris(-7-hexadecenoate) (5), 1,2,3-propanetriyl(5Z,5'Z,5''Z)tris(-5-hexadecenoate) (6), 1,2,3-propanetriyltris(octadecanoate) (7), and 2β-hydroxymethyl tetraeicosanoate (8). Tetradecane (9), four fatty acids: hexadecanoic acid (10), tetradecanoic acid (11), (Z)-9-eicosenoic acid (12), and ethyl tetradec-7-enoate (13) were isolated from c...
Methods in molecular biology (Clifton, N.J.), 2018
Experimental modeling of human inherited disorders provides insight into the cellular and molecul... more Experimental modeling of human inherited disorders provides insight into the cellular and molecular mechanisms involved, and the underlying genetic component influencing, the disease phenotype. The breakthrough development of induced pluripotent stem cell (iPSC) technology represents a quantum leap in experimental modeling of human diseases, providing investigators with a self-renewing and, thus, unlimited source of pluripotent cells for targeted differentiation. In principle, the entire range of cell types found in the human body can be interrogated using an iPSC approach. Therefore, iPSC technology, and the increasingly refined abilities to differentiate iPSCs into disease-relevant target cells, has far-reaching implications for understanding disease pathophysiology, identifying disease-causing genes, and developing more precise therapeutics, including advances in regenerative medicine. In this chapter, we discuss the technological perspectives and recent developments in the appli...
Indian Journal of Urology, 2016
The incidence of renal stones is increasing, and percutaneous nephrolithotomy (PCNL) is considere... more The incidence of renal stones is increasing, and percutaneous nephrolithotomy (PCNL) is considered the gold standard treatment for large and/or complex renal stones. [1,2] However, it is regarded as the "most complicated stone surgery technique to teach." [3] Acquiring proficiency in surgical skills during residency should be a priority, as evidence suggests that surgeons who performed more PCNLs during residency continued to be more comfortable while performing the procedure outside residency. [4] Stone free rate (SFR) and complications are important clinical end points for PCNL and have been used as surrogate markers for assessing competence and learning curve. [5] Overall SFR after PCNL have been reported as 76% by The Clinical Research Office of the Endourological
Devanagari script is being used in various languages, in south Asian subcontinent, such as Sanskr... more Devanagari script is being used in various languages, in south Asian subcontinent, such as Sanskrit, Rajasthani, Marathi and Nepali and it is also the script of Hindi, the mother tongue of majority of Indians. Recognition of handwritten characters of Devanagari alphabet set is an important area of research. The work done for the recognition of Devanagari handwritten script is negligible in literature despite it is being used by millions people in India and abroad and it has numerous applications. The feature extraction method(s) used to recognize hand-printed characters play an important role in ICR applications. There are many feature extraction methods available in literature. We have tested the recognition performance of about 5 feature extraction methods available in literature on Devanagari handwritten characters. A database of more than 25000 handwritten Devanagari characters is developed by collecting the samples from hundreds writers belonging to 43 Devanagari alphabets. The performance comparisons have been made using two classifiers MLP and SVM.
ChemInform, 2001
ABSTRACT ChemInform is a weekly Abstracting Service, delivering concise information at a glance t... more ABSTRACT ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Journal of clinical and diagnostic research : JCDR, 2015
Metabolic syndrome or Syndrome X is characterized by hyperlipidemia, increased blood pressure, ab... more Metabolic syndrome or Syndrome X is characterized by hyperlipidemia, increased blood pressure, abdominal obesity and hyperglycemia, which increases the risk of cardiovascular complications. In addition to these, it is also associated with nontraditional risk factor like C- reactive protein, Plasminogen activator and fibrinogen. Various studies have documented association of these nontraditional risk factor, in Type 2 diabetes mellitus. Thus patients with diabetes mellitus are higher risk of developing micro and macro vascular complications like ischemic heart disease (IHD) and diabetic retinopathy. Diabetic retinopathy is the leading cause of decreased visual acuity, which is associated with maculopathy and profierative complications of it. Chronic hyperglycemia and its associated nonenzymatic glycation play an important role in the development of microangiopathy. To study the prevalence of the metabolic syndrome in type 2 diabetes mellitus. To study the plasma fibrinogen and its re...
Volume 1: Heat Transfer in Energy Systems; Theory and Fundamental Research; Aerospace Heat Transfer; Gas Turbine Heat Transfer; Transport Phenomena in Materials Processing and Manufacturing; Heat and, 2012
Polymer, 2008
Nitric acid treated single and multi wall carbon nanotubes (SWNT and MWNT) have been dispersed in... more Nitric acid treated single and multi wall carbon nanotubes (SWNT and MWNT) have been dispersed in polypropylene using maleic anhydride grafted polypropylene (MA-g-PP) and butanol/xylene solvent mixture. SWNT exfoliation was characterized by Raman and UVe viseNIR spectroscopies. Evidence for hydrogen bonding between maleic anhydride grafted polypropylene and nitric acid treated nanotubes was obtained using infrared spectroscopy. Polypropylene/carbon nanotube composites were melt-spun into fibers. Dynamic mechanical studies show that for fibers containing 0.1 wt% SWNT, storage modulus increased by 5 GPa at À140 C and by about 1 GPa at 100 C, suggesting temperature dependent interfacial strength. The crystallization behavior has been monitored using differential scanning calorimetry and optical microscopy. Control fibers exhibited 27% shrinkage at 160 C, while the shrinkage in the composite fibers was less than 5%. Fibers heat-treated to 170 C show very narrow polypropylene melting peak (peak width about 1 C).
PLoS ONE, 2011
Background: The Inositol 1,4,5-trisphosphate receptor (InsP 3 R) is an InsP 3 gated intracellular... more Background: The Inositol 1,4,5-trisphosphate receptor (InsP 3 R) is an InsP 3 gated intracellular Ca 2+-release channel. Characterization of Drosophila mutants for the InsP 3 R has demonstrated that InsP 3-mediated Ca 2+ release is required in Drosophila larvae for growth and viability. Methodology/Principal Findings: To understand the molecular basis of these growth defects a genome wide microarray analysis has been carried out with larval RNA obtained from a strong InsP 3 R mutant combination in which 1504 independent genes were differentially regulated with a log 2 of fold change of 1 or more and P,0.05. This was followed by similar transcript analyses from InsP 3 R mutants where growth defects were either suppressed by introduction of a dominant suppressor or rescued by ectopic expression of an InsP 3 R transgene in the Drosophila insulin like peptide-2 (Dilp2) producing cells. Conclusions/Significance: These studies show that expression of transcripts related to carbohydrate and amine metabolism is altered in InsP 3 receptor mutant larvae. Moreover, from a comparative analysis of genes that are regulated in the suppressed and rescued conditions with the mutant condition, it appears that the organism could use different combinations of pathways to restore a 'normal' growth state.
Polymer, 2008
In this work, we provide the evidence of polymer transcrystallinity in the presence of carbon nan... more In this work, we provide the evidence of polymer transcrystallinity in the presence of carbon nanotubes (CNTs). The interfacial morphology of carbon nanotube fiberepolypropylene matrix is investigated by means of polarized optical microscopy (POM), wide-angle X-ray diffraction (WAXD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The supramolecular microstructures of polypropylene transcrystals induced by the nanotube fiber are observed in the range of isothermal crystallization temperatures from 118 C to 132 C. The dynamic process of transcrystallization is analyzed by using the theory of heterogeneous nucleation. Microstructure analysis shows that the nanotubes can nucleate the growth of both aand g-transcrystal, and a-transcrystals dominate the overall interfacial morphology. Close to the nanotube fiber surface, a cross-hatched lamellar microstructure composed of mother lamellae and daughter lamellae is observed.
Research in Veterinary Science, 2012
Bluetongue is an economically important viral disease of small ruminants. The present/current dia... more Bluetongue is an economically important viral disease of small ruminants. The present/current diagnostic kits and methods to diagnose BTV are laborious, time consuming and expensive. In the present study, we have attempted to develop a novel approach to detect BTV antibodies in sera that in future can be harnessed for developing a pen side diagnostic test. Briefly, we identified the immunodominant regions of the VP7 protein of BTV and synthesized them in the multiple antigenic peptide (MAP) format with cysteine at C-terminal of the lysine mosaic, which elicited highly ordered conformation as well as ELISA reactivity. Finally, we coated the MAP peptides on the gold nanoparticles that can be used to detect BTV specific antibodies in the sera using a spot test.
Brazilian Journal of Infectious Diseases, 2008
Since the introduction of varicella vaccination in India, surveillance of circulating VZV strains... more Since the introduction of varicella vaccination in India, surveillance of circulating VZV strains has gained significance. Differentiating wild-type VZV strains from the Oka vaccine strain can be achieved only by molecular genotyping methods. The development of PCR methods for VZV strain differentiation has been hampered by the fact that the VZV genome is highly conserved. We used VZV ORF 62 PCR-RFLP analysis to identify and differentiate wild-type VZV strains in India from the Oka vaccine strain. Digestion of VZV ORF 62 amplicons with SmaI, enabled accurate strain differentiation; the Oka strain was positive for three SmaI sites, compared to two SmaI sites in the wild-type VZV strains that we tested.
2009 IEEE International Conference on Fuzzy Systems, 2009
... B.Sc. (Engg.) Electrical Engg., Faculty of Engineeringemail: setia.achint @gmail.com. V.Meha... more ... B.Sc. (Engg.) Electrical Engg., Faculty of Engineeringemail: setia.achint @gmail.com. V.Mehar Swarup, is a student of IV Yr. B.Sc. ... Fuzzy systems have also been used for load balancing in different contexts [19, 20]. In particular, in Narayan et al. ...
Translational Research, 2010
Parkinson&amp... more Parkinson's disease (PD) is a progressive neurodegenerative disease for which stem cell research has created hope in the last few years. Seven PD patients aged 22 to 62 years with a mean duration of disease 14.7+/-7.56 years were enrolled to participate in the prospective, uncontrolled, pilot study of single-dose, unilateral transplantation of autologous bone-marrow-derived mesenchymal stem cells (BM-MSCs). The BM-MSCs were transplanted into the sublateral ventricular zone by stereotaxic surgery. Patients were followed up for a period that ranged from 10 to 36 months. The mean baseline…
Indian Journal of Clinical Biochemistry, 2002
Tuberculosis remains major health problem in India and developing countries Immunodiagnosis has i... more Tuberculosis remains major health problem in India and developing countries Immunodiagnosis has important role in screening, diagnosis and management of tuberculosis. SEVA TB ES-31 antigen has shown potential in detecting tuberculous IgG antibody in earlier studies from our laboratory. In the present study we have analysedSEVA TB ES-31 antigen specific immunoglobulinsIgM, IgA and IgG in clinically and bacteriologically confirmed pulmonary tuberculosis cases to determine the usefulness of specific immunoglobulin class in the diagnosis of patients attending the hospital.Of the 30 cases of pulmonary tuberculosis 25 (83.3%) were positive for IgG, 19 (63.3%) for IgM and 16 (53.3%) for IgA. On combining IgG and IgM positivity, sensitivity was increased to 93.3%. While combining IgG and IgA positivity, sensitivity increased to 90%. However specificity was decreased to 66.6% and 70% for both of these combinations respectively. It could be envisaged from this study that IgG antibody detection against ES-31 antigen showed acceptable sensitivity (83.3%) and specificity (86.6%) compared to IgM or IgA alone or in combination. When immune responses were analysed according to degree of sputum positivity, IgG response was observed to be predominant in all grades, compared to IgM or IgA antibody. The addition of IgM or IgA as an adjunct test increases the sensitivity but at the cost of specificity. Hence the detection of IgG alone is more useful compared to IgM or IgA assay, in detecting tuberculosis disease cases coming to the hospital.
Indian Journal of Clinical Biochemistry, 2001
Proteins secreted into the culture medium byMycobacterium tuberculosis (M. tb) are shown to be so... more Proteins secreted into the culture medium byMycobacterium tuberculosis (M. tb) are shown to be source of antigens of immunodiagnostic interest. Anin vitro released 31 kDa antigen ESAS-7F isolated fromM.tb H(37)Ra culture filtrate by salt precipitation, SDS-PAGE and cation exchange fast protein liquid chromatography (FPLC) was shown earlier to be a diagnostically important antigen fraction. In this report, we describe the isolation of ESAS-7F antigen using monospecific antibody coupled to sepharose CL-4B column. The percentage recovery of ESAS-7F antigen using affinity chromatography was approximately 8% of the total ES antigen proteins compared to 0.05% obtained by conventional purification steps using salt precipitation, SDS-PAGE and FPLC. Similar seroreactivity was observed by the antigen isolated by both the methods in indirect ELISA. Affinity chromatography helped in an increased recovery of ESAS-7F antigen and obviates the need for time consuming conventional purification steps.
Indian Journal of Otolaryngology
An audiological survey of 2000 children of 2 schools, one catering to the children from economica... more An audiological survey of 2000 children of 2 schools, one catering to the children from economically weaker section and other from effluent section has been done. The incidence of hearing loss was found to be 12.25%. The incidence of conductive loss was 99.59% and neurosensory loss was 0.41%. It was significantly higher in economically weaker section children, than that of
International Journal of Molecular Sciences
miRNA regulates the expression of protein coding genes and plays a regulatory role in human devel... more miRNA regulates the expression of protein coding genes and plays a regulatory role in human development and disease. The human iPSCs and their differentiated progenies provide a unique opportunity to identify these miRNA-mediated regulatory mechanisms. To identify miRNA–mRNA regulatory interactions in human nervous system development, well characterized NSCs were differentiated from six validated iPSC lines and analyzed for differentially expressed (DE) miRNome and transcriptome by RNA sequencing. Following the criteria, moderated t statistics, FDR-corrected p-value ≤ 0.05 and fold change—absolute (FC-abs) ≥2.0, 51 miRNAs and 4033 mRNAs were found to be significantly DE between iPSCs and NSCs. The miRNA target prediction analysis identified 513 interactions between 30 miRNA families (mapped to 51 DE miRNAs) and 456 DE mRNAs that were paradoxically oppositely expressed. These 513 interactions were highly enriched in nervous system development functions (154 mRNAs; FDR-adjusted p-valu...
Clinical Advances in Periodontics
Natural product research, Jan 19, 2018
Chloroform extract from the leaves of Turraea vogelii Hook f. ex Benth demonstrated cytotoxic act... more Chloroform extract from the leaves of Turraea vogelii Hook f. ex Benth demonstrated cytotoxic activity against a chronic myelogenous leukemia cell, K-562 with ICof 14.27 μg/mL, while chloroform, ethyl acetate and methanol extracts from the stem of the plant inhibited K-562 cells growth with ICof 19.50, 24.10 and 85.40 μg/mL respectively. Bioactive chloroform extract of Turraea vogelii leaves affords two triterpenoids: oleana-12,15,20-trien-3β-ol (1), and oleana-11,13-dien-3β,16α,28-triol (2), with six fatty esters, ethyl hexaeicos-5-enoate (3), 3-hydroxy-1,2,3-propanetriyltris(tetadecanoate) (4), 1,2,3-propanetriyl(7Z,7'Z,7''Z)tris(-7-hexadecenoate) (5), 1,2,3-propanetriyl(5Z,5'Z,5''Z)tris(-5-hexadecenoate) (6), 1,2,3-propanetriyltris(octadecanoate) (7), and 2β-hydroxymethyl tetraeicosanoate (8). Tetradecane (9), four fatty acids: hexadecanoic acid (10), tetradecanoic acid (11), (Z)-9-eicosenoic acid (12), and ethyl tetradec-7-enoate (13) were isolated from c...
Methods in molecular biology (Clifton, N.J.), 2018
Experimental modeling of human inherited disorders provides insight into the cellular and molecul... more Experimental modeling of human inherited disorders provides insight into the cellular and molecular mechanisms involved, and the underlying genetic component influencing, the disease phenotype. The breakthrough development of induced pluripotent stem cell (iPSC) technology represents a quantum leap in experimental modeling of human diseases, providing investigators with a self-renewing and, thus, unlimited source of pluripotent cells for targeted differentiation. In principle, the entire range of cell types found in the human body can be interrogated using an iPSC approach. Therefore, iPSC technology, and the increasingly refined abilities to differentiate iPSCs into disease-relevant target cells, has far-reaching implications for understanding disease pathophysiology, identifying disease-causing genes, and developing more precise therapeutics, including advances in regenerative medicine. In this chapter, we discuss the technological perspectives and recent developments in the appli...
Indian Journal of Urology, 2016
The incidence of renal stones is increasing, and percutaneous nephrolithotomy (PCNL) is considere... more The incidence of renal stones is increasing, and percutaneous nephrolithotomy (PCNL) is considered the gold standard treatment for large and/or complex renal stones. [1,2] However, it is regarded as the "most complicated stone surgery technique to teach." [3] Acquiring proficiency in surgical skills during residency should be a priority, as evidence suggests that surgeons who performed more PCNLs during residency continued to be more comfortable while performing the procedure outside residency. [4] Stone free rate (SFR) and complications are important clinical end points for PCNL and have been used as surrogate markers for assessing competence and learning curve. [5] Overall SFR after PCNL have been reported as 76% by The Clinical Research Office of the Endourological
Devanagari script is being used in various languages, in south Asian subcontinent, such as Sanskr... more Devanagari script is being used in various languages, in south Asian subcontinent, such as Sanskrit, Rajasthani, Marathi and Nepali and it is also the script of Hindi, the mother tongue of majority of Indians. Recognition of handwritten characters of Devanagari alphabet set is an important area of research. The work done for the recognition of Devanagari handwritten script is negligible in literature despite it is being used by millions people in India and abroad and it has numerous applications. The feature extraction method(s) used to recognize hand-printed characters play an important role in ICR applications. There are many feature extraction methods available in literature. We have tested the recognition performance of about 5 feature extraction methods available in literature on Devanagari handwritten characters. A database of more than 25000 handwritten Devanagari characters is developed by collecting the samples from hundreds writers belonging to 43 Devanagari alphabets. The performance comparisons have been made using two classifiers MLP and SVM.
ChemInform, 2001
ABSTRACT ChemInform is a weekly Abstracting Service, delivering concise information at a glance t... more ABSTRACT ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Journal of clinical and diagnostic research : JCDR, 2015
Metabolic syndrome or Syndrome X is characterized by hyperlipidemia, increased blood pressure, ab... more Metabolic syndrome or Syndrome X is characterized by hyperlipidemia, increased blood pressure, abdominal obesity and hyperglycemia, which increases the risk of cardiovascular complications. In addition to these, it is also associated with nontraditional risk factor like C- reactive protein, Plasminogen activator and fibrinogen. Various studies have documented association of these nontraditional risk factor, in Type 2 diabetes mellitus. Thus patients with diabetes mellitus are higher risk of developing micro and macro vascular complications like ischemic heart disease (IHD) and diabetic retinopathy. Diabetic retinopathy is the leading cause of decreased visual acuity, which is associated with maculopathy and profierative complications of it. Chronic hyperglycemia and its associated nonenzymatic glycation play an important role in the development of microangiopathy. To study the prevalence of the metabolic syndrome in type 2 diabetes mellitus. To study the plasma fibrinogen and its re...
Volume 1: Heat Transfer in Energy Systems; Theory and Fundamental Research; Aerospace Heat Transfer; Gas Turbine Heat Transfer; Transport Phenomena in Materials Processing and Manufacturing; Heat and, 2012
Polymer, 2008
Nitric acid treated single and multi wall carbon nanotubes (SWNT and MWNT) have been dispersed in... more Nitric acid treated single and multi wall carbon nanotubes (SWNT and MWNT) have been dispersed in polypropylene using maleic anhydride grafted polypropylene (MA-g-PP) and butanol/xylene solvent mixture. SWNT exfoliation was characterized by Raman and UVe viseNIR spectroscopies. Evidence for hydrogen bonding between maleic anhydride grafted polypropylene and nitric acid treated nanotubes was obtained using infrared spectroscopy. Polypropylene/carbon nanotube composites were melt-spun into fibers. Dynamic mechanical studies show that for fibers containing 0.1 wt% SWNT, storage modulus increased by 5 GPa at À140 C and by about 1 GPa at 100 C, suggesting temperature dependent interfacial strength. The crystallization behavior has been monitored using differential scanning calorimetry and optical microscopy. Control fibers exhibited 27% shrinkage at 160 C, while the shrinkage in the composite fibers was less than 5%. Fibers heat-treated to 170 C show very narrow polypropylene melting peak (peak width about 1 C).
PLoS ONE, 2011
Background: The Inositol 1,4,5-trisphosphate receptor (InsP 3 R) is an InsP 3 gated intracellular... more Background: The Inositol 1,4,5-trisphosphate receptor (InsP 3 R) is an InsP 3 gated intracellular Ca 2+-release channel. Characterization of Drosophila mutants for the InsP 3 R has demonstrated that InsP 3-mediated Ca 2+ release is required in Drosophila larvae for growth and viability. Methodology/Principal Findings: To understand the molecular basis of these growth defects a genome wide microarray analysis has been carried out with larval RNA obtained from a strong InsP 3 R mutant combination in which 1504 independent genes were differentially regulated with a log 2 of fold change of 1 or more and P,0.05. This was followed by similar transcript analyses from InsP 3 R mutants where growth defects were either suppressed by introduction of a dominant suppressor or rescued by ectopic expression of an InsP 3 R transgene in the Drosophila insulin like peptide-2 (Dilp2) producing cells. Conclusions/Significance: These studies show that expression of transcripts related to carbohydrate and amine metabolism is altered in InsP 3 receptor mutant larvae. Moreover, from a comparative analysis of genes that are regulated in the suppressed and rescued conditions with the mutant condition, it appears that the organism could use different combinations of pathways to restore a 'normal' growth state.
Polymer, 2008
In this work, we provide the evidence of polymer transcrystallinity in the presence of carbon nan... more In this work, we provide the evidence of polymer transcrystallinity in the presence of carbon nanotubes (CNTs). The interfacial morphology of carbon nanotube fiberepolypropylene matrix is investigated by means of polarized optical microscopy (POM), wide-angle X-ray diffraction (WAXD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The supramolecular microstructures of polypropylene transcrystals induced by the nanotube fiber are observed in the range of isothermal crystallization temperatures from 118 C to 132 C. The dynamic process of transcrystallization is analyzed by using the theory of heterogeneous nucleation. Microstructure analysis shows that the nanotubes can nucleate the growth of both aand g-transcrystal, and a-transcrystals dominate the overall interfacial morphology. Close to the nanotube fiber surface, a cross-hatched lamellar microstructure composed of mother lamellae and daughter lamellae is observed.
Research in Veterinary Science, 2012
Bluetongue is an economically important viral disease of small ruminants. The present/current dia... more Bluetongue is an economically important viral disease of small ruminants. The present/current diagnostic kits and methods to diagnose BTV are laborious, time consuming and expensive. In the present study, we have attempted to develop a novel approach to detect BTV antibodies in sera that in future can be harnessed for developing a pen side diagnostic test. Briefly, we identified the immunodominant regions of the VP7 protein of BTV and synthesized them in the multiple antigenic peptide (MAP) format with cysteine at C-terminal of the lysine mosaic, which elicited highly ordered conformation as well as ELISA reactivity. Finally, we coated the MAP peptides on the gold nanoparticles that can be used to detect BTV specific antibodies in the sera using a spot test.
Brazilian Journal of Infectious Diseases, 2008
Since the introduction of varicella vaccination in India, surveillance of circulating VZV strains... more Since the introduction of varicella vaccination in India, surveillance of circulating VZV strains has gained significance. Differentiating wild-type VZV strains from the Oka vaccine strain can be achieved only by molecular genotyping methods. The development of PCR methods for VZV strain differentiation has been hampered by the fact that the VZV genome is highly conserved. We used VZV ORF 62 PCR-RFLP analysis to identify and differentiate wild-type VZV strains in India from the Oka vaccine strain. Digestion of VZV ORF 62 amplicons with SmaI, enabled accurate strain differentiation; the Oka strain was positive for three SmaI sites, compared to two SmaI sites in the wild-type VZV strains that we tested.
2009 IEEE International Conference on Fuzzy Systems, 2009
... B.Sc. (Engg.) Electrical Engg., Faculty of Engineeringemail: setia.achint @gmail.com. V.Meha... more ... B.Sc. (Engg.) Electrical Engg., Faculty of Engineeringemail: setia.achint @gmail.com. V.Mehar Swarup, is a student of IV Yr. B.Sc. ... Fuzzy systems have also been used for load balancing in different contexts [19, 20]. In particular, in Narayan et al. ...
Translational Research, 2010
Parkinson&amp... more Parkinson's disease (PD) is a progressive neurodegenerative disease for which stem cell research has created hope in the last few years. Seven PD patients aged 22 to 62 years with a mean duration of disease 14.7+/-7.56 years were enrolled to participate in the prospective, uncontrolled, pilot study of single-dose, unilateral transplantation of autologous bone-marrow-derived mesenchymal stem cells (BM-MSCs). The BM-MSCs were transplanted into the sublateral ventricular zone by stereotaxic surgery. Patients were followed up for a period that ranged from 10 to 36 months. The mean baseline…
Indian Journal of Clinical Biochemistry, 2002
Tuberculosis remains major health problem in India and developing countries Immunodiagnosis has i... more Tuberculosis remains major health problem in India and developing countries Immunodiagnosis has important role in screening, diagnosis and management of tuberculosis. SEVA TB ES-31 antigen has shown potential in detecting tuberculous IgG antibody in earlier studies from our laboratory. In the present study we have analysedSEVA TB ES-31 antigen specific immunoglobulinsIgM, IgA and IgG in clinically and bacteriologically confirmed pulmonary tuberculosis cases to determine the usefulness of specific immunoglobulin class in the diagnosis of patients attending the hospital.Of the 30 cases of pulmonary tuberculosis 25 (83.3%) were positive for IgG, 19 (63.3%) for IgM and 16 (53.3%) for IgA. On combining IgG and IgM positivity, sensitivity was increased to 93.3%. While combining IgG and IgA positivity, sensitivity increased to 90%. However specificity was decreased to 66.6% and 70% for both of these combinations respectively. It could be envisaged from this study that IgG antibody detection against ES-31 antigen showed acceptable sensitivity (83.3%) and specificity (86.6%) compared to IgM or IgA alone or in combination. When immune responses were analysed according to degree of sputum positivity, IgG response was observed to be predominant in all grades, compared to IgM or IgA antibody. The addition of IgM or IgA as an adjunct test increases the sensitivity but at the cost of specificity. Hence the detection of IgG alone is more useful compared to IgM or IgA assay, in detecting tuberculosis disease cases coming to the hospital.
Indian Journal of Clinical Biochemistry, 2001
Proteins secreted into the culture medium byMycobacterium tuberculosis (M. tb) are shown to be so... more Proteins secreted into the culture medium byMycobacterium tuberculosis (M. tb) are shown to be source of antigens of immunodiagnostic interest. Anin vitro released 31 kDa antigen ESAS-7F isolated fromM.tb H(37)Ra culture filtrate by salt precipitation, SDS-PAGE and cation exchange fast protein liquid chromatography (FPLC) was shown earlier to be a diagnostically important antigen fraction. In this report, we describe the isolation of ESAS-7F antigen using monospecific antibody coupled to sepharose CL-4B column. The percentage recovery of ESAS-7F antigen using affinity chromatography was approximately 8% of the total ES antigen proteins compared to 0.05% obtained by conventional purification steps using salt precipitation, SDS-PAGE and FPLC. Similar seroreactivity was observed by the antigen isolated by both the methods in indirect ELISA. Affinity chromatography helped in an increased recovery of ESAS-7F antigen and obviates the need for time consuming conventional purification steps.