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Bajpai M, Rai N, Bajpai SK. Equilibrium adsorption studies on removal of diclofenac sodium from aqueous solution using sawdust-polyaniline (SD-PAn) composites. J Appl Polym Sci 2012. [DOI: 10.1002/app.35289] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Ragavan M, Gazula S, Yadav DK, Agarwala S, Srinivas M, Bajpai M, Bhatnagar V, Gupta DK. Peripherally inserted central venous lines versus central lines in surgical newborns--a comparison. Indian J Pediatr 2010; 77:171-4. [PMID: 20091380 DOI: 10.1007/s12098-009-0291-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2009] [Accepted: 05/19/2009] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To compare the insertion characteristics, utilization profile, life span and the complication rates of Central lines (CL) and Peripherally inserted central lines (PICL). METHODS A prospective study of all CL or PICL insertions during January 2007 to September 2007 in the Neonatal Surgical Intensive Care Unit of a tertiary care center was done. The number of attempts, procedure time, duration of catheter stay, number of dressing done, complication during insertion and maintenance and cause of removal were noted and the differences analyzed statistically using Pearson chi square / t test. P value. 0.05 was considered significant. RESULTS Ninety two neonates were included in the present study of whom 60 were PICL insertions and 32 CL insertions. The two groups were comparable in terms of age, weight and the use of total perental nutrition (TPN) through the catheters. On comparing the PICL and CL groups, the number of attempts for successful insertion (p=0.003), the time taken (p=0.005), the number of dressing changes required during the indwelling period (p=0.005) and the overall complication rates (p=0.002) were significantly less in the PICL group. The PICL could be maintained for longer periods of time (p= 0.005) and only in 11.5% of the patients it had to be removed before completion of therapy as compared to 37.5% early removals for CL (p=0.02) CONCLUSION PICL is a safe, effective and reliable method of providing prolonged IV access in newborns. It also has the least incidence of complications during insertion and maintenance over prolonged period of time when compared to CL and should be recommended for routine use in neonatal surgical patients.
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Bajpai M. Pediatric urology: Development, eligibility, practice. J Indian Assoc Pediatr Surg 2009; 14:47-9. [PMID: 20671844 PMCID: PMC2905529 DOI: 10.4103/0971-9261.55150] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Ebert EC, Panja A, Das KM, Praveen R, Geng X, Rezac C, Bajpai M. Patients with inflammatory bowel disease may have a transforming growth factor-beta-, interleukin (IL)-2- or IL-10-deficient state induced by intrinsic neutralizing antibodies. Clin Exp Immunol 2009; 155:65-71. [PMID: 19076830 DOI: 10.1111/j.1365-2249.2008.03802.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Ulcerative colitis (UC) and Crohn's disease (CD) are considered to be immunologically mediated disorders that share certain features with murine models of colitis. Whether any of these models are physiologically relevant to the human condition remains controversial. The hypothesis is that increased amounts of antibodies neutralizing transforming growth factor (TGF)-beta, interleukin (IL)-2 or IL-10 create a relative immunodeficient state in inflammatory bowel disease (IBD) that predisposes to disease. To evaluate this, serum samples from patients with UC or CD and from normal healthy individuals were studied by enzyme-linked immunosorbent assays. Antibodies recognizing TGF-beta were most prevalent in UC (P<0.01); anti-IL-10 antibodies were elevated in CD (P<0.05), while anti-IL-2 antibodies were the same for all three groups. Importantly, the percentage of IBD patients with at least one of the antibody levels greater than any control value was 30% for UC and 33% for CD. To verify the presence of these antibodies, immobilized TGF-beta was exposed to UC sera and the attached proteins identified by Western blot assay. The proteins proved to be exclusively immunoglobulin (Ig) G. To evaluate the neutralizing activity of these antibodies, cytokine-specific IgG from subjects in each group of patients was incubated with TGF-beta, IL-2 or IL-10 before addition to a bioassay with changes in viability determined by a colorimetric analysis. Antibodies from most individuals in all three groups neutralized the action of each cytokine. This study shows that about one-third of IBD patients may have a relative deficiency of TGF-beta, IL-2 or IL-10 due to an increase in neutralizing antibodies in their sera.
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Bajpai M, Jain V, Gupta A. Surgical Aspects of Childhood Tuberculosis. Tuberculosis (Edinb) 2009. [DOI: 10.5005/jp/books/10992_43] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Sharma PK, Mittal A, Bajpai M. A study of oleic acid oily base for the tropical delivery of dexamethasone microemulsion formulations. ASIAN JOURNAL OF PHARMACEUTICS 2009. [DOI: 10.4103/0973-8398.56299] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Namdeo M, Saxena S, Tankhiwale R, Bajpai M, Mohan YM, Bajpai SK. Magnetic nanoparticles for drug delivery applications. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2008; 8:3247-3271. [PMID: 19051873 DOI: 10.1166/jnn.2008.399] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
In recent past magnetic nanoparticles have been explored for a number of biomedical applications due to their superparamagnetic moment with high magnetic saturation value. For these biomedical applications, magnetic nanoparticles require being monodispersed so that the individual nanoparticle has almost identical physico-chemical properties for biodistribution, bioelimination and contrast imaging potential. Further, the surface functionalization/modification of magnetic nanoparticles ultimately facilitate the protein or DNA separation, detection and magnetic resonance imaging contrast, drug delivery and hyperthermia applications. The essential goal of this review is to evaluate the recent advances of magnetic nanoparticles for tumor, brain targeting and hyperthermia applications.
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Prakash O, Singh G, Singh R, Mathur S, Bajpai M, Yadav S. Protective Effect of a Herbal Formula Against Carbontetrachloride Induced Hepatotoxicity. INT J PHARMACOL 2008. [DOI: 10.3923/ijp.2008.282.286] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Goyal M, Goel A, Kumar P, Bajpai M, Verma NS, Kant S, Tiwari S. Circadian rhythm of peak expiratory flow rate in healthy north Indian men. INDIAN JOURNAL OF PHYSIOLOGY AND PHARMACOLOGY 2008; 52:64-68. [PMID: 18831353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Peak expiratory flow rate (PEFR) variability follows a specific pattern in asthmatics as well as in healthy individuals. There is scarcity of data for Indian healthy subjects. The PEFR (L/min.) was measured with Wright's portable peak flow meter at 05:00, 8:00, 11:00, 14:00, 17:00, 20:00 and 23:00 hours in 42 healthy, non-smoking adults of age group between 18-26 years. The variability of PEFR revealed a circadian pattern. PEFR levels tend to increase from morning at 5:00 hours till evening at 17:00 hours, with peak PEFR in evening at 17:00 hours, after which there was a progressive fall in PEFR levels, till morning 5:00 hours. This study provides the preliminary reference data of circadian pattern of PEFR in healthy individuals.
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Gupta P, Bajpai M, Bajpai SK. Development of Cotton Fabric with Antibacterial Properties: Part I: Preparation of Poly(acrylamide‐co‐itaconic acid) grafted Cotton Fabric and its Water Uptake Analysis. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2007. [DOI: 10.1080/10601320701786992] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Thomas V, Namdeo M, Murali Mohan Y, Bajpai SK, Bajpai M. Review on Polymer, Hydrogel and Microgel Metal Nanocomposites: A Facile Nanotechnological Approach. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2007. [DOI: 10.1080/10601320701683470] [Citation(s) in RCA: 93] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Bajpai SK, Mohan YM, Bajpai M, Tankhiwale R, Thomas V. Synthesis of polymer stabilized silver and gold nanostructures. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2007; 7:2994-3010. [PMID: 18019128 DOI: 10.1166/jnn.2007.911] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
This review article is focused on the various approaches that have been made to synthesize metal nanoparticles with predetermined shape, size, and fair stability. Due emphasis has been given on polymer stabilized nanoparticles. In addition use of other varieties of stabilizers like inorganic salts, organic compounds, organic solvent, biological molecules, etc. have also been discussed. Finally, formation of two and three-dimensional nanostructures like nanowires, nanodiscs, nanoprisms has also been revealed.
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Singh A, Bajpai M, Vadra J, Rajakrishnan V, Singh S. 3.218 Surgical treatment improving quality of life in Parkinson's disease. Parkinsonism Relat Disord 2007. [DOI: 10.1016/s1353-8020(08)70856-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Nallegowda M, Handa G, Khanna M, Bajpai M, Sachdev G, Singh U. PR_214. Arch Phys Med Rehabil 2006. [DOI: 10.1016/j.apmr.2006.08.241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Bajpai SK, Bajpai M, Sharma L. Investigation of Water Uptake Behavior of Superabsorbent Polymers Composed of N‐Vinyl‐2‐pyrrolidone and Partially Neutralized Acrylic Acid. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2006. [DOI: 10.1080/10601320600814648] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Bajpai SK, Bajpai M, Saxena S, Dubey S. Quantitative Interpretation of the Deviation from ‘Zero-Order’ Kinetics for the Release of Cyanocobalamin from a Starch-Based Enzymatically Degradable Hydrogel. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2006. [DOI: 10.1080/10601320600737682] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Bajpai SK, Bajpai M, Sharma L. Investigation of Water Uptake Behavior and Mechanical Properties of Superporous Hydrogels. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2006. [DOI: 10.1080/10601320600575249] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Abstract
Posterior urethral valves are the most common cause of lower urinary tract obstruction in a male child, generally occurring as an isolated anomaly. Congenital anterior urethral diverticulum, although less common, can also cause urethral obstruction. We report a rare combination of the two anomalies in which the proximal, more severe anomaly prevented the initial expression of the other.
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Kumar A, Agarwala S, Srinivas M, Bajpai M, Bhatnagar V, Gupta DK, Gupta AK, Mitra DK. Anorectal malformations and their impact on survival. Indian J Pediatr 2005; 72:1039-42. [PMID: 16388153 DOI: 10.1007/bf02724407] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
OBJECTIVE To evaluate the incidence, types and the effect on outcome of associated anomalies in neonates with anorectal malformations (ARM). METHODS This retrospective study was carried out on all neonates with ARM admitted to the neonatal surgical intensive care unit (NSICU) from 1998 through 2003. RESULTS Of the 754 neonates admitted to the NSICU during the study period of 6 years, there were 124 (16.4%) neonates with anorectal malformations. Of these 110 were included in the study. 73 % were male and 27% female. 86% of these were high ARM (HARM) while only 14% were low ARM (LARM). Associated anomalies were seen in 68% of patients. The incidence was 72% for HARM and 50% for LARM. The major associated anomalies consisted of esophageal (13%), gastrointestinal (GIT) (11%), genitourinary (GUT) (32%), skeletal (26%), cardiac (33%) and miscellaneous 26%. The overall survival rate was 84% (82% for HARM and 94% for LARM). The survival among those with associated esophageal anomalies was 43%, GIT 67%, GUT 80%, cardiac 61%, skeletal 76% and miscellaneous 79% respectively. This difference in survival was significant only for those with esophageal (p=0.004) and cardiac anomalies (p=0.0026). The survival rates among those with one, two or more than two organ systems involved with associated anomalies were 88%, 82% and 58% respectively. This difference was significant only for more than two organ systems involvement (p=0.003). CONCLUSION Associated anomalies are common in neonates with ARM, the incidence being similar for HARM and LARM. The survival depends upon the number and severity of associated anomalies both in patients with LARM and HARM. Neonates with more number of organ systems involved have a poorer survival specially when associated with esophageal and cardiac anomalies. All neonates with ARM merit a meticulous search for associated anomalies so that the management can be tailored for each baby.
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Bajpai M, Dinda AK, Singal AK. Blockade of Rennin-Angiotensin system blunts the fibrotic response in experimental acute pyelonephritis. J Indian Assoc Pediatr Surg 2005. [DOI: 10.4103/0971-9261.16070] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Bajpai M, Kumar A, Gupta AK, Pawar DK. Lumbotomy approach for upper urological tract surgery in children--an analysis of 68 consecutive lumbotomies. Eur J Pediatr Surg 2004; 14:163-7. [PMID: 15211405 DOI: 10.1055/s-2004-820903] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
OBJECTIVES To comprehensively analyse the results of upper urological tract surgery performed using a lumbotomy approach in the paediatric age group. METHODS 68 consecutive patients underwent upper urological tract surgery during the last 5 years in our surgical unit. In all of these patients, a lumbotomy approach was used with a transverse skin incision. The hospital charts were reviewed for age, sex, diagnosis, type of surgery, intra-operative problems, duration of surgery, time to oral feeds, postoperative pain, length of hospitalisation and complications. RESULTS Age range was 1 month to 12 years with a mean of 66 months. There were 47 boys and 16 girls. Surgeries performed were: pyeloplasty, pyelolithotomy, nephroureterectomy, ureterostomy and heminephrectomy. No intraoperative problems were encountered and the mean duration of surgery was 64.68 minutes. All patients resumed full oral feeds within 24 hours of surgery and postoperative pain was minimal. The mean duration of hospital stay was 6.16 days. No incision-related complications were seen. CONCLUSIONS Lumbotomy incision is a safe, easy and effective approach for upper urological tract surgery in children.
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Fichorova RN, Bajpai M, Chandra N, Hsiu JG, Spangler M, Ratnam V, Doncel GF. Interleukin (IL)-1, IL-6, and IL-8 predict mucosal toxicity of vaginal microbicidal contraceptives. Biol Reprod 2004; 71:761-9. [PMID: 15128598 DOI: 10.1095/biolreprod.104.029603] [Citation(s) in RCA: 129] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Inflammation of the female reproductive tract increases susceptibility to HIV-1 and other viral infections and, thus, it becomes a serious liability for vaginal products. Excessive release of proinflammatory cytokines may alter the mucosal balance between tissue destruction and repair and be linked to enhanced penetration and replication of viral pathogens upon chemical insult. The present study evaluates four surface-active microbicide candidates, nonoxynol-9 (N-9), benzalkonium chloride (BZK), sodium dodecyl sulfate, and sodium monolaurate for their activity against human sperm and HIV, and their capacity to induce an inflammatory response on human vaginal epithelial cells and by the rabbit vaginal mucosa. Spermicidal and virucidal evaluations ranked N-9 as the most potent compound but were unable to predict the impact of the compounds on vaginal cell viability. Interleukin (IL)-1 release in vitro reflected their cytotoxicity profiles more accurately. Furthermore, IL-1 concentrations in vaginal washings correlated with cumulative mucosal irritation scores after single and multiple applications (P < 0.01), showing BZK as the most damaging agent for the vaginal mucosa. BZK induced rapid cell death, IL-1 release, and IL-6 secretion. The other compounds required either more prolonged or repeated contact with the vaginal epithelium to induce a significant inflammatory reaction. Increased IL-8 levels after multiple applications in vivo identified compounds with the highest cumulative mucosal toxicity (P < 0.01). In conclusion, IL-1, IL-6, and IL-8 in the vaginal secretions are sensitive indicators of compound-induced mucosal toxicity. The described evaluation system is a valuable tool in identifying novel vaginal contraceptive microbicides, selecting out candidates that may enhance, rather than decrease, HIV transmission.
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Mishra A, Yadav A, Agarwal M, Bajpai M. Fenugreek mucilage for solid removal from tannery effluent. REACT FUNCT POLYM 2004. [DOI: 10.1016/j.reactfunctpolym.2003.08.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Chandrasekharam VVSS, Srinivas M, Das SN, Jha P, Bajpai M, Chaki SP, Misro MM. Prepubertal human chorionic gonadotropin injection affects postpubertal germ cell maturation and androgen production in rat testis. Urology 2003; 62:571-4. [PMID: 12946779 DOI: 10.1016/s0090-4295(03)00408-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVES To examine the effects of varying doses of prepubertal human chorionic gonadotropin (hCG) administration on postpubertal germ cell status and androgen status in rats. The long-term effects of prepubertal hCG administration on postpubertal testicular function are still debated. METHODS Forty male prepubertal Wistar rats, aged 20 days, were divided into four equal groups. Group 1 served as the controls. Each rat in groups 2, 3, and 4 received subcutaneous hCG injections of 5 IU, 10 IU, and 50 IU, respectively, on days 20 and 30 of life. Serum testosterone levels were estimated on days 33 and 70. On day 70, the left testis of each rat was harvested for DNA flow cytometric analysis. RESULTS The testosterone levels on day 33 progressively increased from groups 1 through 4, and the difference between any two groups was statistically significant. In contrast, the testosterone levels on day 70 were greatest in group 1 and progressively decreased in groups 2 through 4, with the lowest value in group 4. On day 70, only group 4 rats had a significantly reduced haploid cell population compared with all other groups. CONCLUSIONS Prepubertal hCG administration adversely affects testosterone levels, and a high dose of hCG has adverse effects on the germ cell haploid cell population. A critical reevaluation of the use of hCG is required in prepubertal boys, especially with respect to the dosage.
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