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Nama M, Satasiya G, Sahoo TP, Moradeeya PG, Sadukha S, Singhal K, Saravaia HT, Dineshkumar R, Anil Kumar M. Thermo-chemical behaviour of Dunaliella salina biomass and valorising their biochar for naphthalene removal from aqueous rural environment. Chemosphere 2024; 353:141639. [PMID: 38447902 DOI: 10.1016/j.chemosphere.2024.141639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 02/26/2024] [Accepted: 03/02/2024] [Indexed: 03/08/2024]
Abstract
Thermo-chemical behavior of a microalgal biomass; Dunaliella salina was investigated through thermo-gravimetric analyses. Fully-grown D. salina biomass were subjected for biochar conversion using pyrolytic treatment at three distinct heating rates such as 2.5, 5, and 15 °C min-1. The kinetic appraisals were explained by using model-free kinetics viz., Kissinger-Akahira-Sanose, Flynn-Waal-Ozawa and Starink iso-conversional correlations with concomitant evaluation of activation energies (Ea). The Ea value is 194.2 kJ mol-1 at 90% conversion in FWO model, which is higher as compared to other two models. Moisture, volatile substances, and other biochemical components of the biomass were volatilized between 400 and 1000 K in two separate thermo-chemical breakdown regimes. Microscopic and surface characterization analyses were carried out to elucidate the elemental and morphological characteristics of the biomass and biochar. Further, the proficiency of the prepared biochar was tested for removing naphthalene from the watery media. The novelty of the present study lies in extending the applicability of biochar prepared from D. salina for the removal of a model polyaromatic hydrocarbon, naphthalene.
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Affiliation(s)
- Muskan Nama
- Applied Phycology and Biotechnology Division, CSIR-Central Salt & Marine Chemicals Research Institute, Bhavnagar, 364 002, Gujarat, India
| | - Gopi Satasiya
- Analytical and Environmental Science Division & Centralized Instrument Facility, CSIR-Central Salt & Marine Chemicals Research Institute, Bhavnagar, 364 002, Gujarat, India; Academy of Scientific and Innovative Research, Ghaziabad, 201 002, Uttar Pradesh, India
| | - Tarini Prasad Sahoo
- Analytical and Environmental Science Division & Centralized Instrument Facility, CSIR-Central Salt & Marine Chemicals Research Institute, Bhavnagar, 364 002, Gujarat, India; Academy of Scientific and Innovative Research, Ghaziabad, 201 002, Uttar Pradesh, India
| | - Pareshkumar G Moradeeya
- Department of Environmental Science and Engineering, Marwadi University, Rajkot, 360 003, Gujarat, India
| | - Shreya Sadukha
- Applied Phycology and Biotechnology Division, CSIR-Central Salt & Marine Chemicals Research Institute, Bhavnagar, 364 002, Gujarat, India; Academy of Scientific and Innovative Research, Ghaziabad, 201 002, Uttar Pradesh, India
| | - Kirti Singhal
- Applied Phycology and Biotechnology Division, CSIR-Central Salt & Marine Chemicals Research Institute, Bhavnagar, 364 002, Gujarat, India; Academy of Scientific and Innovative Research, Ghaziabad, 201 002, Uttar Pradesh, India
| | - Hitesh T Saravaia
- Analytical and Environmental Science Division & Centralized Instrument Facility, CSIR-Central Salt & Marine Chemicals Research Institute, Bhavnagar, 364 002, Gujarat, India; Academy of Scientific and Innovative Research, Ghaziabad, 201 002, Uttar Pradesh, India
| | - Ramalingam Dineshkumar
- Applied Phycology and Biotechnology Division, CSIR-Central Salt & Marine Chemicals Research Institute, Bhavnagar, 364 002, Gujarat, India; Academy of Scientific and Innovative Research, Ghaziabad, 201 002, Uttar Pradesh, India.
| | - Madhava Anil Kumar
- Centre for Rural and Entrepreneurship Development, National Institute of Technical Teachers Training and Research, Chennai, 600 113, Tamil Nadu, India.
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Palsania P, Singhal K, Dar MA, Kaushik G. Food grade plastics and Bisphenol A: Associated risks, toxicity, and bioremediation approaches. J Hazard Mater 2024; 466:133474. [PMID: 38244457 DOI: 10.1016/j.jhazmat.2024.133474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 01/04/2024] [Accepted: 01/06/2024] [Indexed: 01/22/2024]
Abstract
Bisphenols' widespread use in day to day life has enabled its existence in various compartments of the environment. Bisphenol A (BPA) is utilized as a monomer in manufacturing polycarbonate plastics, epoxy resins, as well as flame retardants and is also considered as an endocrine disruptor. This study focuses on determining BPA concentration in daily-use food-grade plastic containers, in addition to its toxicity evaluation in environmental samples contaminated by BPA leachates. The highest concentration of BPA was observed in black poly bags (42.78 ppm), followed by slice juice bottles and infant milk bottles. Toxicity tests revealed significant impacts on Rhizobium and Chlorella sp. as a representative species of soil and aquatic environment respectively. To biodegrade the BPA, two potential strains, Brucella sp. and Brevibacillus parabrevis, were isolated from a landfill site. Qualitative and quantitative evaluation of biodegraded BPA through U-HPLC and GC-MSMS showed various metabolites of BPA. Results indicate the native bacterial isolates as potential candidates for BPA degradation while transforming this contaminant to a less toxic and hazardous form. The study also proposes the risk associated with food-grade plastic containers and recommends to establish a sustainable way for plastic waste management.
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Affiliation(s)
- Preksha Palsania
- Department of Environmental Science, School of Earth Sciences, Central University of Rajasthan, BandarSindri, Ajmer 305817, Rajasthan, India
| | - Kirti Singhal
- Department of Environmental Science, School of Earth Sciences, Central University of Rajasthan, BandarSindri, Ajmer 305817, Rajasthan, India
| | - Mohd Ashaf Dar
- Department of Environmental Science, School of Earth Sciences, Central University of Rajasthan, BandarSindri, Ajmer 305817, Rajasthan, India
| | - Garima Kaushik
- Department of Environmental Science, School of Earth Sciences, Central University of Rajasthan, BandarSindri, Ajmer 305817, Rajasthan, India.
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Singhal K, Chukkali S. Psychometric Properties of the Moral Injury Symptom Scale Among Indian Healthcare Professionals. Psychol Res Behav Manag 2023; 16:1439-1444. [PMID: 37124074 PMCID: PMC10143678 DOI: 10.2147/prbm.s404094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 04/12/2023] [Indexed: 05/02/2023] Open
Abstract
The spread of the novel coronavirus has led to a rise in morally conflicting situations for healthcare professionals. Doctors and nurses who were serving as frontline workers, require special attention to alleviate the long-lasting impact of the potentially morally injurious events. The current study aims to validate the Moral Injury Symptom Scale-Healthcare Professionals (MISS- HP) among Indian healthcare workers. The 10-item MISS was administered to 150 doctors and 150 nurses using the purposive sampling method. Firstly, reliability was assessed using internal consistency measure. Secondly, item discrimination index was assessed by calculating the point biserial correlation for each item. Cronbach alpha indicated high internal consistency (0.77). The point biserial correlation value for each item indicated good discrimination. Finally, confirmatory factor analysis (CFA) was performed to replicate the factor structure. CFA results suggested a good fit to the data. In conclusion, MISS-HP is a reliable and valid tool to assess moral injury among Indian healthcare professionals in India.
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Affiliation(s)
- Kirti Singhal
- Department of Psychology, CHRIST (Deemed to be University), Ghaziabad, Delhi NCR, India
| | - Surekha Chukkali
- Department of Psychology, CHRIST (Deemed to be University), Ghaziabad, Delhi NCR, India
- Correspondence: Surekha Chukkali, Department of Psychology, CHRIST (Deemed to be University), Mariam Nagar, Meerut Road, Ghaziabad, Delhi NCR, 201003, India, Tel +91 9901775477, Email
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Mukhija K, Singhal K, Angmo S, Yadav K, Yadav H, Sandhir R, Singhal NK. Correction to: Potential of Alginate Encapsulated Ferric Saccharate Microemulsions to Ameliorate Iron Deficiency in Mice. Biol Trace Elem Res 2022:10.1007/s12011-022-03522-x. [PMID: 36526912 DOI: 10.1007/s12011-022-03522-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Kimmi Mukhija
- Department of Biochemistry, Panjab University, Chandigarh, Punjab, India
| | - Kirti Singhal
- Department of Biochemistry, Panjab University, Chandigarh, Punjab, India
| | - Stanzin Angmo
- National Agri Food Biotechnology Institute, Mohali, Punjab, India
| | - Kamalendra Yadav
- National Agri Food Biotechnology Institute, Mohali, Punjab, India
| | - Hariom Yadav
- National Agri Food Biotechnology Institute, Mohali, Punjab, India
- National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Rajat Sandhir
- Department of Biochemistry, Panjab University, Chandigarh, Punjab, India
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Singhal K, Bothra M, Kapoor S, Jhamb U, Mishra D. Metabolic Disorders among Children Presenting with Acute Encephalopathy. Indian J Pediatr 2022; 89:665-672. [PMID: 35254636 DOI: 10.1007/s12098-022-04087-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 10/27/2021] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To study the clinicoetiological profile of children presenting with acute noninfectious encephalopathy (NIE) and identify the proportion of children having inborn errors of metabolism (IEM). METHOD This descriptive cross sectional study was conducted in a tertiary care centre in Northern India. Consecutive children, aged more than 28 d and less than 12 y, with acute encephalopathy were enrolled after ruling out CNS infection. All children were evaluated on an internally validated structured proforma. A sequential pre-decided battery of tests was applied to determine the cause of encephalopathy. IEM suspects were subjected to TMS/GCMS followed by mutation analysis for confirmation. RESULTS Fifty children with noninfectious encephalopathy (NIE) were recruited and metabolic causes were detected in 9 of these children (18%), aged 3 to 42 mo, with female preponderance. The IEMs included lactic acidosis (4), glutaric aciduria (3), isovaleric academia (1), and hyperhomocysteinemia (1). History of previously affected siblings and consanguinity between the parents were important indicators of IEM. MS/MS and mutation analysis were the mainstay of diagnosis in these patients. IEMs contributed to the most common cause amongst cases of NIE. CONCLUSION IEMs constitute a significant proportion of NIE in India and a high index of suspicion is required to make the diagnosis.
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Affiliation(s)
- Kirti Singhal
- Department of Pediatrics, MAMC and LNJP Hospital, Delhi, 110002, India
| | - Meenakshi Bothra
- Department of Pediatrics, MAMC and LNJP Hospital, Delhi, 110002, India.
| | - Seema Kapoor
- Department of Pediatrics, MAMC and LNJP Hospital, Delhi, 110002, India
| | - Urmila Jhamb
- Department of Pediatrics, MAMC and LNJP Hospital, Delhi, 110002, India
| | - Devendra Mishra
- Department of Pediatrics, MAMC and LNJP Hospital, Delhi, 110002, India
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Mukhija K, Singhal K, Angmo S, Yadav K, Yadav H, Sandhir R, Singhal NK. Potential of Alginate Encapsulated Ferric Saccharate Microemulsions to Ameliorate Iron Deficiency in Mice. Biol Trace Elem Res 2016; 172:179-192. [PMID: 26637994 DOI: 10.1007/s12011-015-0564-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 11/05/2015] [Indexed: 11/26/2022]
Abstract
Iron deficiency is one of the most prominent mineral deficiencies around the world, which especially affects large population of women and children. Development of new technologies to combat iron deficiency is on high demand. Therefore, we developed alginate microcapsule with encapsulated iron that had better oral iron bioavailability. Microcapsules containing iron with varying ratios of sodium alginate ferric(III)-saccharide were prepared using emulsification method. In vitro studies with Caco-2 cells suggested that newly synthesized microemulsions had better iron bioavailability as compared to commercially available iron dextran formulations. Ferrozine in vitro assay showed that alginate-encapsulated ferric galactose microemulsion (AFGM) had highest iron bioavailability in comparison to other four ferric saccharate microemulsions, namely AFGlM, AFMM, AFSM, and AFFM synthesized in our laboratory. Mice studies also suggested that AFGM showed higher iron absorption as indicated by increased serum iron, hemoglobin, and other hematopoietic measures with almost no toxicity at tested doses. Development of iron-loaded microemulsions leads to higher bioavailability of iron and can provide alternative strategies to treat iron deficiency.
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Affiliation(s)
- Kimmi Mukhija
- Department of Biochemistry, Panjab University, Chandigarh, Punjab, India
| | - Kirti Singhal
- Department of Biochemistry, Panjab University, Chandigarh, Punjab, India
| | - Stanzin Angmo
- National Agri Food Biotechnology Institute, Mohali, Punjab, India
| | - Kamalendra Yadav
- National Agri Food Biotechnology Institute, Mohali, Punjab, India
| | - Hariom Yadav
- National Agri Food Biotechnology Institute, Mohali, Punjab, India
- Present Address: National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Rajat Sandhir
- Department of Biochemistry, Panjab University, Chandigarh, Punjab, India
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Singhal K, Sandhir R. L-type calcium channel blocker ameliorates diabetic encephalopathy by modulating dysregulated calcium homeostasis. J Neurosci Res 2014; 93:296-308. [DOI: 10.1002/jnr.23478] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Revised: 07/20/2014] [Accepted: 08/07/2014] [Indexed: 01/02/2023]
Affiliation(s)
- Kirti Singhal
- Department of Biochemistry; Panjab University; Chandigarh India
| | - Rajat Sandhir
- Department of Biochemistry; Panjab University; Chandigarh India
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Abstract
BACKGROUND Several studies have implicated changes in the levels of trace elements in diabetes. Chromium is one such element that seems to potentiate insulin action, thereby regulating carbohydrate and lipid metabolism. The aim of the present study was to evaluate the effect of chromium supplementation as chromium picolinate on the lipid profile of streptozotocin (STZ)-induced diabetic rats. METHODS Rats were rendered diabetic by a single injection of STZ (50 mg/kg, i.p.). Chromium picolinate (1 mg/kg per day, p.o.) was administered to rats for a period of 4 weeks. At the end of the treatment period, plasma total lipids, triglycerides, total cholesterol and lipoprotein levels were determined, as was hepatic glucose-6-phosphate dehydrogenase activity. RESULTS Total plasma lipids increased significantly in diabetic rats and this increase was ameliorated by chromium treatment for 4 weeks. Elevated total lipids in diabetic rats were due to increased plasma triglyceride and cholesterol levels. Chromium supplementation lowered plasma triglyceride and cholesterol levels to near normal. Chromium treatment also normalized low-density lipoprotein-cholesterol (LDL-C) and very low-density lipoprotein-cholesterol levels and improved the total cholesterol:high-density lipoprotein-cholesterol (HDL-C) and HDL-C:LDL-C ratios, suggesting an anti-atherogenic effect. In addition to improving the plasma lipid profile, chromium supplementation normalized liver glucose-6-phosphate dehydrogenase activity in diabetic rats. CONCLUSIONS These results provide evidence that chromium picolinate effectively attenuates the dyslipidemia associated with diabetes and thus can be used as an adjuvant therapy in the treatment of diabetes and its associated complications.
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Sundaram B, Singhal K, Sandhir R. Ameliorating effect of chromium administration on hepatic glucose metabolism in streptozotocin-induced experimental diabetes. Biofactors 2012; 38:59-68. [PMID: 22287284 DOI: 10.1002/biof.194] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2011] [Accepted: 12/07/2011] [Indexed: 02/02/2023]
Abstract
Chromium has been recognized as an essential trace element that plays an important role in carbohydrate metabolism. However, the molecular mechanisms involved in its action are not clear. This study was undertaken to understand the mechanism of chromium action in experimental diabetes. Streptozotocin-induced diabetic animals were administered chromium as chromium picolinate (CrP) at a daily dose of 1 mg/kg body weight for a period of 4 weeks. It was observed that chromium complexed with picolinate was effective in lowering plasma glucose levels as well as was able to alleviate polyphagia, polydipsia, and weight loss in diabetic animals. Administration of chromium was also found to normalize glycogen content in liver of diabetic animals to near control levels. The reduction in plasma glucose levels by chromium was accompanied by increase in activity of glycolytic enzymes (e.g., glucokinase, phosphofructokinase, and pyruvate kinase) and by suppression in activity of gluconeogenic enzymes (e.g., glucose-6-phosphatase and phosphoenolpyruvate carboxykinase) in liver. Hepatic glucose uptake was found to be increased by chromium supplementation as demonstrated by decrease in Km and increase in Vmax values in diabetic animals. Chromium levels were lower in the liver of diabetic rats when compared with that of control rats. A negative correlation was observed between plasma glucose and chromium concentration in patients with diabetes. The data suggests that chromium supplementation as CrP is beneficial in correcting hyperglycemia, implying that the modulation of the glucose metabolism by chromium may be therapeutically beneficial in the treatment of diabetes.
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Kant R, Singhal K, Shukla SK, Chandrashekar K, Saxena AK, Ranjan A, Raj P. Synthesis and Biological Activity of a Novel Compound: (C6F5)2SbPh. PHOSPHORUS SULFUR 2008. [DOI: 10.1080/10426500701841763] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- R. Kant
- a Department of Chemistry , Lucknow University , Lucknow , India
| | - K. Singhal
- a Department of Chemistry , Lucknow University , Lucknow , India
| | - Sanjeev K. Shukla
- b National Institute for Interdisciplinary Science and Technology , Trivandrum , India
| | | | - A. K. Saxena
- d Defence Material Stores, Research and Development Establishment , Kanpur , India
| | - A. Ranjan
- d Defence Material Stores, Research and Development Establishment , Kanpur , India
| | - P. Raj
- a Department of Chemistry , Lucknow University , Lucknow , India
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Kidwai M, Singhal K, Kukreja S. One-pot synthesis of novel substituted pyrrolo[2,3-d]pyrimidines using dry media. Heteroatom Chem 2007. [DOI: 10.1002/hc.20355] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Dussa CU, Singhal K. Bilateral simultaneous extensor mechanism disruption following simultaneous bilateral total knee replacement. Arch Orthop Trauma Surg 2005; 125:396-8. [PMID: 16034643 DOI: 10.1007/s00402-005-0826-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2004] [Indexed: 11/30/2022]
Abstract
Extensor disruptions of the knee following the total knee replacements are uncommon. We describe a case of postoperative bilateral simultaneous extensor mechanism disruption following simultaneous bilateral total knee replacement. On both sides, the patient sustained open wounds. The extensor mechanism was successfully repaired on both sides, but the outcome is less than satisfactory.
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Affiliation(s)
- C U Dussa
- Princess of Wales Hospital, Flat A-14, Room 80, Staff Accommodation, Bridgend, CF31 1RQ, UK.
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Calvo EJ, Etchenique R, Bartlett PN, Singhal K, Santamaria C. Quartz crystal impedance studies at 10 MHz of viscoelastic liquids and films. Faraday Discuss 1997. [DOI: 10.1039/a703551i] [Citation(s) in RCA: 75] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Lin JJ, Singhal K, Parton L, Cascio C, Patlak CS, Stewart CL. Correlations between plasminogen activator inhibitor-1 and peritoneal transport in pediatric CCPD patients. ARCH ESP UROL 1995; 15:246-51. [PMID: 7578502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
OBJECTIVE Plasminogen activator inhibitor-1 (PAI-1) is an important regulator of plasminogen activators and has been shown to be involved in the accumulation of extracellular matrix (ECM) in various tissues. Since peritoneal ECM is a resistance site for peritoneal transport, the production and release of PAI-1 in the peritoneum may affect the peritoneal transport of water and small solutes. DESIGN The linear correlations between the dialysate PAI-1 levels and the variables of peritoneal transport during peritoneal equilibration tests (PET) were examined. SETTING A tertiary university hospital. PATIENTS Six stable pediatric patients (age 10.8 +/- 4 years) undergoing continuous cycler-assisted peritoneal dialysis were included. INTERVENTIONS None. RESULTS All data are mean +/- SD. There was a positive correlation between the infused volume and the net ultrafiltration (UF, 198 +/- 127 mL, r = 0.82, p < 0.05). The dialysate PAI-1 levels increased during the dwell time (2.44 +/- 2.23 ng/mL or 2.46 +/- 1.72 micrograms at 4 hours vs 0.04 +/- 0.1 ng/mL or 0.04 +/- 0.09 micrograms at 0 hour, p < 0.05). The saturation indices (dialysate/plasma ratio) of PAI-1 and albumin at 4 hours were 1.05 +/- 1.21 and 0.028 +/- 0.004, respectively. The changes from 0 hour dwell to 4 hour dwell in the dialysate PAI-1 concentration (PAI4-0, 2.4 +/- 2.2 ng/mL) or amount corrected to body surface area (APAI4-0/BSA, 2.61 +/- 2.11 micrograms/m2) negatively correlated with UF or UF/body surface area and positively correlated with the number of episodes of peritonitis. There was no correlation between PAI4-0,APAI4-0/BSA, or plasma PAI-1 concentration and the mass transfer coefficient and clearance of either urea or creatinine. CONCLUSIONS The elevated PAI-1 level during the PET was likely from the local production and release of PAI-1. It had an inverse relationship with the amount of ultrafiltration. Repeated inflammation of the peritoneum was associated with an increased production and release of PAI-1 into the peritoneum.
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Affiliation(s)
- J J Lin
- Department of Pediatrics, State University of New York at Stony Brook, USA
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Raj P, Husain I, Singhal K. Synthesis and biological studies on some organo-tin and lead halo and mixed halo-pseudohalo anionic complexes. Arzneimittelforschung 1994; 44:178-81. [PMID: 8147952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Some new anionic complexes of organo-tin(IV) and lead (IV) isolated in combination of tetraorgano-ammonium phosphonium and stibonium cation(s). L[R4-nMXnY] and L2[R2MX2Y2], where R = C2H5, C4H9 or C6H5; M = Sn or Pb; X = Y = Cl = Br, I, N3, NCS; n = 1, 2 and L = R4M1 (M1 = N, P, Sb), whose structures were confirmed by correct elemental analyses, molar conductance values, van't Hoff factor and IR spectral studies, were synthesized and evaluated for anti-convulsant activity in vivo and antiviral and antibacterial activity in vitro. A few of them exhibited promising activity. In addition, the toxicity (ALD50) and effects on the central nervous system of these complexes have been studied in mice.
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Affiliation(s)
- P Raj
- Department of Chemistry, Lucknow University, India
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Middha VP, Singhal K. Radiographic assessment of cup migration in bipolar hip arthroplasty: intra-observer and interobserver errors and tolerance limits. Arch Orthop Trauma Surg 1992; 111:230-1. [PMID: 1622715 DOI: 10.1007/bf00571484] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Statistical methods were used to calculate the possible observer error in measuring cup migration in bipolar hip arthroplasty from follow-up radiographs. Finding the "tolerance limits" by such methods helped in assigning the true significance of any observed change.
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Affiliation(s)
- V P Middha
- Department of Orthopaedic and Accident Surgery, Royal Liverpool Hospital, United Kingdom
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Abstract
Regression and clustering methods have both been used to explore the effects of explanatory variables on survival times for patients with cancer or other chronic diseases. This paper discusses effective and computationally feasible approaches for this task in situations where there are fairly large and complex data sets; the techniques stressed are all-subsets regression and a kind of recursive partition clustering. We compare the two approaches in a rather general way, in part by examining some survival data for patients with ovarian carcinoma, and conclude that both have strong points to recommend them.
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Affiliation(s)
- A Ciampi
- McGill University, Montreal, Quebec, Canada
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Singhal K, Siwach SB, Gupta DK, Gupta SP. A comparative study of captopril & propranolol in essential hypertension. J Assoc Physicians India 1987; 35:636-9. [PMID: 3325494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Lawless JF, Singhal K. Regression Methods and the Exploration of Large Medical Data Bases. Biostatistics 1987. [DOI: 10.1007/978-94-009-4794-8_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Fiserova-Bergerova V, Vlach J, Singhal K. Simulation and prediciton of uptake, distribution, and exhalation of organic solvents. Br J Ind Med 1974; 31:45-52. [PMID: 4821411 PMCID: PMC1009542 DOI: 10.1136/oem.31.1.45] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Fiserova-Bergerova, Vera, Vlach, J., and Singhal, K. (1974).British Journal of Industrial Medicine,31, 45-52. Simulation and prediction of uptake, distribution, and exhalation of organic solvents. Presented here is a theory and mathematical solution of the uptake, distribution, and excretion of inhaled lipid soluble noxious gases, which embraces the effects of metabolism. An electrical analogue was employed to explain the theory, since the analogue is described by the same set of differential equations, and much knowledge is available for the mathematical treatment of electrical networks. The model is used to calculate the uptake and exhalation curves of vapours, to explain what happens to the inhaled vapours in the body, and to predict their cumulation in the body in periodic situations such as occur in industrial exposure.
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Singhal K, Richter M. Cells involved in the immune response. I. The response of normal rabbit bone marrow cells to antigens in vitro. Int Arch Allergy Appl Immunol 1968; 33:493-500. [PMID: 5657244 DOI: 10.1159/000230064] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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