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Abstract
Purpose To evaluate choroidal lesions with spectral domain optical coherence tomography (SD-OCT) scan in varicella zoster virus (VZV) uveitis. Methods VZV-uveitis cases which underwent OCT scan for choroidal lesions were studied. SD-OCT scan passing through these lesions was studied in detail. Subfoveal choroidal thickness (SFCT) during active and resolved stages was studied. Angiogaphic features were studied where available. Results Thirteen out of 15 cases had same-sided herpes zoster ophthalmicus skin rashes. All except three patients had old or active kerato-uveitis. All eyes demonstrated clear vitreous and a single or multiple hypopigmented orangish-yellow choroidal lesions. The number of lesions remained unchanged during the follow-up on clinical examination. SD-OCT over lesions (n = 11) showed choroidal thinning (n = 5), hyporeflective choroidal elevation during active inflammation (n = 3), transmission effects (n = 4), and ellipsoid zone disruption (n = 7). The mean change in SFCT (n = 9) after resolution of the inflammation was 26.3 μm (range: 3-90 μm). Fundus fluorescein angiography showed iso-fluorescence over lesions in all (n = 5), but indocyanine green angiography (n = 3) showed hypofluorescence at lesions. Mean follow-up was 1.38 years (range: 3 months-7 years). De-novo appearance of choroidal lesion during the first relapse of VZV-uveitis was captured in one case. Conclusion VZV-uveitis can cause focal or multifocal hypopigmented choroidal lesions with thickening or scarring of choroidal tissue, depending on the disease activity.
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Affiliation(s)
- Ankush Kawali
- Department of Uveitis and Ocular Immunology, Narayana Nethralaya, Bengaluru, Karnataka, India
| | - Aayesha Khanum
- Department of Retina, Narayana Nethralaya, Bengaluru, Karnataka, India
| | - Padmamalini Mahendradas
- Department of Uveitis and Ocular Immunology, Narayana Nethralaya, Bengaluru, Karnataka, India
| | - Srinivasan Sanjay
- Department of Uveitis and Ocular Immunology, Narayana Nethralaya, Bengaluru, Karnataka, India
| | - Sai-Bhakti Mishra
- Department of Uveitis and Ocular Immunology, Narayana Nethralaya, Bengaluru, Karnataka, India
| | - Rohit Shetty
- Department of Cornea and Refractive Surgery, Narayana Nethralaya, Bengaluru, Karnataka, India
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Mahendradas P, Sanjay S, Kawali A, Mishra S, Shetty B. Commentary: Evidence of dengue virus in eviscerated specimens of panophthalmitis secondary to dengue fever: A possible cause-effect phenomenon. Indian J Ophthalmol 2022; 70:970. [PMID: 35225553 PMCID: PMC9114552 DOI: 10.4103/ijo.ijo_2604_21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Mahendradas P, Sethu S, Jayadev C, Anilkumar A, Kawali A, Sanjay S, Mishra S, Shetty R, Shetty B. Trends in teleconsultations for uveitis during the COVID-19 lockdown. Indian J Ophthalmol 2022; 70:1007-1012. [PMID: 35225562 PMCID: PMC9114533 DOI: 10.4103/ijo.ijo_1759_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Purpose: To study the use of teleophthalmology as a tool to manage patients with uveitis and to describe the experience of teleconsultation for uveitis at a tertiary eye care hospital in India during the two waves of the COVID-19 pandemic. Methods: A prospective observational case series of uveitis patients seeking teleconsultations during the first (March 25–May 2020) and second lockdown (April 27 to June 21, 2021) in a tertiary eye care center were analyzed. Results: There were 79 teleconsultations in the first and 89 teleconsultations in the second lockdown. A majority of the patients presented in the age group of 41–60 years in both the lockdowns. There were both new or primary consultations and follow-up patients (6% vs. 94%) in the first lockdown, and similarly in the second lockdown (8% new vs. 92% follow-up). The majority of patients resided in Bengaluru city (78% in the first and 76% in the second lockdown). After evaluation through video consultation, only 15% required a hospital referral in the first lockdown, whereas in the second lockdown, 21.3% were referred to the hospital. During the second lockdown, 20% presented with COVID-19 infection-related ailments. Conclusion: Based on our preliminary experience using a customized smartphone-based application for teleconsultation, we found it to be an alternative option to provide continuation of ophthalmic care to uveitis patients. Given the current COVID-19 situation, it can help avoid physical visits of uveitis patients to the hospital.
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Moja TN, Bunekar N, Mishra SB, Tsai TY, Hwang SS, Mishra AK. Melt processing of polypropylene-grafted-maleic anhydride/Chitosan polymer blend functionalized with montmorillonite for the removal of lead ions from aqueous solutions. Sci Rep 2020; 10:217. [PMID: 31937796 PMCID: PMC6959273 DOI: 10.1038/s41598-019-57079-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 12/16/2019] [Indexed: 11/12/2022] Open
Abstract
Heavy metals such as lead ions Pb (II) are a primary concern in the aquatic environment. These is because Pb (II) is poisonous at a threshold limit above 0.01 mg/L, when consumed over a long period of time. Pb (II) poisoning is very harmful to various organs viz. heart, intestine and kidneys. Besides, it affects bones, tissues, nervous and reproductive systems. Hence, it is important to remove Pb (II) from aquatic environment. Polypropylene (PP) and polypropylene grafted-maleic-anhydride (PP-g-MA) based nanocomposites reinforced with Chitosan (CS) and modified montmorillonite clay nanofiller (CL120DT) were successfully fabricated using twin screw melt extrusion for adsorption of Pb (II). The resulting nanocomposites were characterized by XRD to analyze the dispersion properties of the material, TEM and SEM for surface morphology, FTIR analysis for the functional groups and TGA for thermal stability. Pure PP showed two sharp peaks, but there was decreased in the intensity upon adding of CS and CL120DT. Among series of nanocomposites 2.0 phr and 4.0 phr loaded samples shows better storage module than that of pure PP. The uptake of Pb (II) from lead nitrate aqueous solution by PP + PP-g-MA/CL120DT-CS 2.0 phr nanocomposites followed the Langmuir isotherm model, with a remediation of 90.9% at pH 8 and was verified by pseudo-second order kinetic model. These results indicate that PP + PP-g-MA//CL120DT-CS 2.0 phr nanocomposites performed as a superabsorbent for the Pb (II) ion removal from aqueous solution.
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Affiliation(s)
- T N Moja
- Nanotechnology and Water Sustainability Research Unit, College of Science, Engineering and Technology, University of South Africa, Florida Campus, Johannesburg, South Africa
| | - N Bunekar
- Department of Chemistry, Master Program in Nanotechnology & Center for Nanotechnology, Chung Yuan Christian University, Chung-Li, 32023, Taiwan, ROC
| | - S B Mishra
- Nanotechnology and Water Sustainability Research Unit, College of Science, Engineering and Technology, University of South Africa, Florida Campus, Johannesburg, South Africa.
| | - T-Y Tsai
- Department of Chemistry, Master Program in Nanotechnology & Center for Nanotechnology, Chung Yuan Christian University, Chung-Li, 32023, Taiwan, ROC.
| | - S S Hwang
- Department of Mechanical Engineering, Chien-Hsin University of Science and Technology, Chung-Li, 32097, Taiwan, ROC
| | - A K Mishra
- Nanotechnology and Water Sustainability Research Unit, College of Science, Engineering and Technology, University of South Africa, Florida Campus, Johannesburg, South Africa.
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Mishra SB, Misra R, Azim A, Baronia AK, Prasad KN, Dhole TN, Gurjar M, Singh RK, Poddar B. Incidence, risk factors and associated mortality of central line-associated bloodstream infections at an intensive care unit in northern India. Int J Qual Health Care 2017; 29:63-67. [PMID: 27940521 DOI: 10.1093/intqhc/mzw144] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2015] [Accepted: 11/17/2016] [Indexed: 12/14/2022] Open
Abstract
Objective To evaluate the incidence, risk factors and associated mortality of central line-associated bloodstream infection (CLABSI) in an adult intensive care unit (ICU) in India. Design This prospective observational study was conducted over a period of 16 months at a tertiary care referral medical center. Setting We conducted this study over a period of 16 months at a tertiary care referral medical center. Participants All patients with a central venous catheter (CVC) for >48 h admitted to the ICU were enrolled. Intervention and main outcome measures Patient characteristics included were underlying disease, sequential organ failure assessment (SOFA), acute physiology and chronic health evaluation (APACHE II) scores and outcome. Statistical analysis of risk factors for their association with mortality was also done. Results There were 3235 inpatient-days and 2698 catheter-days. About 46 cases of CLABSI were diagnosed during the study period. The overall rate of CLABSI was 17.04 per 1000 catheter-days and 14.21 per 1000 inpatient-days. The median duration of hospitalization was 23.5 days while the median number of days that a CVC was in place was 17.5. The median APACHE II and SOFA scores were 17 and 10, respectively. Klebsiella pneumoniae was the most common organism (n = 22/55, 40%). Immunosuppressed state and duration of central line more than 10 days were significant factors for developing CLABSI. SOFA and APACHE II scores showed a tendency towards significance for mortality. Conclusions Our results underscore the need for strict institutional infection control measures. Regular training module for doctors and nurses for catheter insertion and maintenance with a checklist on nurses' chart for site inspection and alerts in all shifts are some measures planned at our center.
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Affiliation(s)
- S B Mishra
- Department of Critical Care Medicine, Sanjay Gandhi Post-graduate Institute of Medical Sciences, Lucknow 226014, India
| | - R Misra
- Department of Microbiology, Sanjay Gandhi Post-graduate Institute of Medical Sciences, Lucknow 226014, India
| | - A Azim
- Department of Critical Care Medicine, Sanjay Gandhi Post-graduate Institute of Medical Sciences, Lucknow 226014, India
| | - A K Baronia
- Department of Critical Care Medicine, Sanjay Gandhi Post-graduate Institute of Medical Sciences, Lucknow 226014, India
| | - K N Prasad
- Department of Microbiology, Sanjay Gandhi Post-graduate Institute of Medical Sciences, Lucknow 226014, India
| | - T N Dhole
- Department of Microbiology, Sanjay Gandhi Post-graduate Institute of Medical Sciences, Lucknow 226014, India
| | - M Gurjar
- Department of Critical Care Medicine, Sanjay Gandhi Post-graduate Institute of Medical Sciences, Lucknow 226014, India
| | - R K Singh
- Department of Critical Care Medicine, Sanjay Gandhi Post-graduate Institute of Medical Sciences, Lucknow 226014, India
| | - B Poddar
- Department of Critical Care Medicine, Sanjay Gandhi Post-graduate Institute of Medical Sciences, Lucknow 226014, India
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Mishra SB, Azim A, Baronia AK, Singh RK, Gurjar M, Poddar B. Comparison between sustained low-efficiencydialysis (SLED) and continuous renal replacement therapy (CRRT) in patients of septic shock: a randomized controlled trial. Intensive Care Med Exp 2015. [PMCID: PMC4796304 DOI: 10.1186/2197-425x-3-s1-a55] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Tiwari AD, Mishra AK, Mishra SB, Mamba BB, Maji B, Bhattacharya S. Synthesis and DNA binding studies of Ni(II), Co(II), Cu(II) and Zn(II) metal complexes of N1,N5-bis[pyridine-2-methylene]-thiocarbohydrazone Schiff-base ligand. Spectrochim Acta A Mol Biomol Spectrosc 2011; 79:1050-1056. [PMID: 21570900 DOI: 10.1016/j.saa.2011.04.018] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2011] [Revised: 03/16/2011] [Accepted: 04/13/2011] [Indexed: 05/30/2023]
Abstract
The thiocarbohydrazone Schiff-base ligand with a nitrogen and sulphur donor was synthesized through condensation of pyridine-2-carbaldehyde and thiocarbohydrazide. Schiff-base ligands have the ability to conjugate with metal salts. A series of metal complexes with a general formula [MCl2(H2L)]·nH2O (MNi, Co, Cu and Zn) were synthesized by forming complexes of the N1,N5-bis[pyridine-2-methylene]-thiocarbohydrazone (H2L) Schiff-base ligand. These metal complexes and ligand were characterized by using ultraviolet-visible (UV-Vis), Fourier Transform Infrared (FT-IR), 1H and 13C NMR spectroscopy and mass spectroscopy, physicochemical characterization, CHNS and conductivity. The biological activity of the synthesized ligand was investigated by using Escherichia coli DNA as target. The DNA interaction of the synthesized ligand and complexes on E. coli plasmid DNA was investigated in the aqueous medium by UV-Vis spectroscopy and the binding constant (Kb) was calculated. The DNA binding studies showed that the metal complexes had an improved interaction due to trans-geometrical isomers of the complexes than ligand isomers in cis-positions.
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Affiliation(s)
- A D Tiwari
- Department of Chemical Technology, University of Johannesburg, P.O. Box 17011, Doornfontein 2028, South Africa
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Shukla P, Shukla P, Mishra SB, Gopalakrishna B. Screening of anti-inflammatory and antipyretic activity of Vitex leucoxylon Linn. Indian J Pharmacol 2011; 42:409-11. [PMID: 21189917 PMCID: PMC2991704 DOI: 10.4103/0253-7613.71891] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [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: 07/01/2010] [Revised: 07/28/2010] [Accepted: 08/21/2010] [Indexed: 11/20/2022] Open
Abstract
Objective: This study was designed to evaluate the anti-inflammatory and antipyretic activity of ethyl acetate extract of Vitex leucoxylon Linn. in various animal experimental models. Materials and Methods: Ethyl acetate extract of V. leucoxylon Linn. evaluated for anti-inflammatory activity in carrageenan, mediator-induced rat paw edema, and cotton pellet-induced granuloma model. The antipyretic activity was evaluated by yeast-induced pyrexia model. Results: Single administration of the ethyl acetate extract of V. leucoxylon Linn. at dose of 500 mg/kg p.o. showed significant (P < 0.001) inhibition of rat paw edema. The ethyl acetate extract showed significant antipyretic activity in brewer yeast-induced pyrexia in rats throughout the observation period of 4 h. Conclusion: This study shows that ethyl acetate extract of V. leucoxylon Linn. has significant anti-inflammatory and antipyretic activity.
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Mishra AK, Mishra SB, Manav N, Kumar R, Chandra R, Saluja D, Kaushik NK. Platinum (IV) thiohydrazide, thiodiamine and thiohydrazone complexes: a spectral, antibacterial and cytotoxic study. Spectrochim Acta A Mol Biomol Spectrosc 2007; 66:1042-7. [PMID: 16920010 DOI: 10.1016/j.saa.2006.04.038] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2006] [Accepted: 04/26/2006] [Indexed: 05/11/2023]
Abstract
Some platinum (IV) complexes [Pt(L)2Cl2] [where, L=2-aminopyridine-N-thiohydrazide (L1), (2-aminopyridine-N-thio)-1,3-propanediamine (L2), benzaldehyde-2-aminopyridine-N-thiohydrazone (L3) and salicylaldehyde-2-aminopyrtidine-N-thiohydrazone (L4)] have been synthesized. The thiohydrazides, thiodiamine and thiohydrazones can exist as thione-thiol tautomer and coordinate as a bidentate N-S ligand. The ligands found to act in monobasic bidentate fashion. Analytical data reveals that metal to ligand stoichiometry is 1:2. The complexes have been characterized by elemental analysis, IR, mass, electronic and 1H NMR spectroscopic studies. In vitro antibacterial and cytotoxic study have also been carried out for some complexes.
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Affiliation(s)
- A K Mishra
- Department of Chemistry, University of Delhi, Delhi 110007, India.
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Mishra AK, Mishra SB, Manav N, Saluja D, Chandra R, Kaushik NK. Synthesis, characterization, antibacterial and cytotoxic study of platinum (IV) complexes. Bioorg Med Chem 2006; 14:6333-40. [PMID: 16765599 DOI: 10.1016/j.bmc.2006.05.047] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2006] [Revised: 05/22/2006] [Accepted: 05/23/2006] [Indexed: 10/24/2022]
Abstract
Platinum (IV) complexes [Pt (L)2Cl2] [where, L= benzyl-N-thiohydrazide (L1), (benzyl-N-thio)-1,3-propanediamine (L2), benzaldehyde-benzyl-N-thiohydrazone (L3) and salicylaldehyde-benzyl-N-thiohydrazone (L4)] have been synthesized. The thiohydrazide, thiodiamine and thiohydrazones can exist as thione-thiol tautomer and coordinate as a bidentate N-S ligand. The ligands were found to act in monobasic bidentate fashion. Analytical data reveal that metal to ligand stoichiometry is 1:2. The complexes have been characterized by elemental analysis, IR, mass, electronic and 1H NMR spectroscopic studies. In vitro antibacterial and cytotoxic studies have been carried out for some complexes. Various kinetic and thermodynamic parameters like order of reaction (n), activation energy (Ea), apparent activation entropy (S#) and heat of reaction (DeltaH) have also been carried out for some complexes.
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Affiliation(s)
- A K Mishra
- Department of Chemistry, University of Delhi, Delhi 110007, India.
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Narain S, Tripathi A, Mishra SB. Population ecology of a freshwater turtle Kachuga tentoria near Panchnada (Etawah: U.P.) and its role as water purifier. J Environ Biol 2006; 27:589-96. [PMID: 17402255] [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: 05/14/2023]
Abstract
The present study deals with biology, ecology and population dynamics of freshwater turtle Kachuga tentoria and its role as water purifier. The study area Panchnada is the site, where five important national rivers meet together and is preserving an appreciable population of nine species of fresh water turtles. Kachuga tentoria was located at all the sampling stations surveyed by the authors, and hence selected for the present study. Different activities (nesting, incubation, predation and other reproductive aspects), climatic conditions, habitat, population density and morphometric features were worked out in detail. A time bound conservation strategy is needed to save this species from extinction. In situ conservation will be more helpful for the recruitment of the population of this species. It will help in the "hatch and release programme" to clean different polluted national rivers.
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Affiliation(s)
- S Narain
- P.G. Department of Zoology, Janta College, Bakewar, Etawah-206 001, India.
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Dandapat MC, Mukherjee LM, Mishra SB, Kar NK. Management of oral cancer in late stages: a review. J Indian Med Assoc 1992; 90:153-5. [PMID: 1522306] [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: 12/27/2022]
Abstract
Sixty cases of oral cancer (2 were of stage II and other 58 were of stage III and stage IV) were treated and observed over a period of 2 years. In patients of oral cancer with bone involvement and mobile cervical nodes (44 cases) local excision which included partial or hemimandibulectomy with radical neck node dissection was performed. Out of these 44 cases, 18 cases received radiotherapy pre-operatively and 26 cases postoperatively. Better results were observed in these cases. When the growth was inaccessible and/or nodes were fixed (13 cases) radiotherapy was found to be suitable. Fistula formation and reconstructive flap necrosis were common following surgery after radiotherapy. Combined modalities of treatment with pre- and postoperative radiotherapy and radical neck node dissection showed excellent results (86.4%) in majority of cases. The remaining one patient received chemotherapy and local excision was performed in 2 cases.
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Affiliation(s)
- M C Dandapat
- Department of Surgery, MKCG Medical College, Berhampore
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Mishra SB, Naik PC, Meher D, Rao MV. Ryle's tube drainage of afferent loop after partial gastrectomy and that of gall bladder after cholecystojejunostomy. J Indian Med Assoc 1989; 87:212-3. [PMID: 2621371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Ryle's tube drainage of the afferent loop effectively prevented duodenal blow-out or anastomotic leakage in 40 patients undergoing partial gastrectomy for recurrent peptic ulcer. Similarly the same procedure was adopted in 20 cases of cholecystojejunostomy. The tube prevented anastomotic leakage and decompressed the biliary tree by effective bile drainage from the very 1st day thus favouring the prognosis. There was no complication observed directly related to either procedure in the present series.
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Mishra SB, Sahoo KP. Primary resection and anastomosis for volvulus of sigmoid colon. J Indian Med Assoc 1986; 84:265-8. [PMID: 3559244] [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: 01/06/2023]
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Mishra SB. Assessment of antecolic versus retrocolic anastomosis after partial gastrectomy. J Indian Med Assoc 1984; 82:111-3. [PMID: 6470499] [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: 01/20/2023]
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Rasool MR, Pothal GC, Mishra SB, Soren S. Protrusion of small intestine through spontaneous perforation of colon at pelvirectal junction. J Indian Med Assoc 1983; 80:102-3. [PMID: 6644034] [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: 01/21/2023]
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Singh S, Dhull RS, Mishra SB. Triple test cross analysis in F2 populations of four barley crosses. Theor Appl Genet 1979; 55:243-245. [PMID: 24306770 DOI: 10.1007/bf00265356] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/1978] [Accepted: 04/09/1979] [Indexed: 06/02/2023]
Abstract
The triple test cross analysis of Jinks and Perkins (1970) was used to study different components of genetic variation in four barley F2 populations, C 164x IB 226, C 164xJyoti, IB 226xP 113 and DL 3xP 113, for final plant height, spike length, 100-kernel weight, grain yield per plant and harvest index. The overall epistasis (i type) was, in general, a minor component but the j & 1 type epistasis was an important element for all five characters in cross 3 (IB 226xP 113). Both the additive (D) and dominance (H) components were highly significant for all the five characters in all four crosses. The dominance was directional in all cases except for 100-grain weight in crosses 1 (C 164xIB 226), 2 (C 164xJyoti) and 4(DL 3xP 113).
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Affiliation(s)
- S Singh
- Department of Agricultural Botany, J.V. College, Baraut, India
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