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Kishor M, Gupta R, Ashok MV, Isaac M, Chaddha RK, Singh OP, Shah H, Nishchal A, Dave M, Vinay Kumar HR, Das A, Rohilla JK, Singh PK, Kumar P, Swami M, Solanki RK, Sahadevan S, Pal A, Ray R, Garg S, Tikka SK, Dyanin M, Avinash P, Dhiman V, Basu A, Rawat VS, Krishnan V, Menon V, Chandran S, Nebhinani N. Competency-based medical curriculum: Psychiatry, training of faculty, and Indian Psychiatric Society. Indian J Psychiatry 2020; 62:207-208. [PMID: 32382183 PMCID: PMC7197841 DOI: 10.4103/psychiatry.indianjpsychiatry_81_20] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 02/02/2020] [Accepted: 03/02/2020] [Indexed: 11/04/2022] Open
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Maiwall R, Pasupuleti SSR, Bihari C, Rastogi A, Singh PK, Naik V, Singh A, Jain P, Kumar A, Mukund A, Mathur RP, Kumar G, Sarin SK. Incidence, Risk Factors, and Outcomes of Transition of Acute Kidney Injury to Chronic Kidney Disease in Cirrhosis: A Prospective Cohort Study. Hepatology 2020; 71:1009-1022. [PMID: 31313333 DOI: 10.1002/hep.30859] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 07/07/2019] [Indexed: 02/06/2023]
Abstract
Transition to chronic kidney disease (CKD) after an episode of acute kidney injury (AKI) is known in patients without cirrhosis. We studied the incidence and risk factors for development of CKD in patients with cirrhosis. Competing risk analysis was performed to identify risk factors for CKD development. Of 818 patients with cirrhosis (age, 50.4 ± 11.8 years; 84% males; Model for End-Stage Liver Disease [MELD], 19.9 ± 9.9), 36% had AKI at enrollment, 27% had previous AKI, and 61% developed new episodes of AKI during the follow-up period. CKD developed in 269 (33%) patients. Serum cystatin C (CysC; subdistribution hazard ratio [SHR], 1.58; 1.07-2.33), episodes of previous AKI (SHR, 1.26; 1.02-1.56), and AKI stage at enrollment (no AKI [SHR, 1] vs. stage 1 [SHR, 3.28; 1.30-8.25] vs. stage 2 [SHR, 4.33; 1.76-10.66] vs. stage 3 [SHR, 4.5; 1.59-12.73]) were identified as baseline risk factors for CKD development. On time-varying competing risk analysis, MELD (SHR, 1.01; 1.00-1.03), number of AKI episodes (SHR, 1.25; 1.15-1.37), and CysC (SHR, 1.38; 1.01-1.89) predicted CKD development. Development of CKD was associated with higher risk of death. Reduction in glomerular filtration rate (GFR) not meeting CKD criteria was observed in 66% of patients with cirrhosis, more so in those with previous AKI episodes and a high CysC level and MELD score. Renal histology, available in 55 patients, showed tubulointerstitial injury in 86%, cholemic nephrosis in 29%, and glomerular changes in 38%. Conclusion: Almost two-thirds of patients with cirrhosis develop episodes of AKI and reduction in GFR; one-third progress to CKD, resulting in adverse outcomes. Higher MELD and CysC levels and number of AKI episodes predict development of CKD in patients with cirrhosis.
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Singh PK, Shrestha DK, Singh N, Gupta N. Extensive-disease small cell lung cancer, multiple relapses, five lines of therapy and more than 10-year survival. BMJ Case Rep 2020; 13:13/2/e232607. [PMID: 32111707 DOI: 10.1136/bcr-2019-232607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Small cell lung cancer (SCLC) accounts for nearly 18% of lung cancer cases. Most of the patients of SCLC are not surgical candidates, due to advanced stage at presentation hence only viable options are chemotherapy and radiotherapy. Long-term survival in SCLC is extremely rare due to relapses and comorbidities. Ten-year survival has never been reported in cases with extensive disease at presentation and history of relapses. Here we are describing a case of extensive disease SCLC who has survived multiple relapses and has received five lines of systemic therapy apart from radiation and palliative care. This case emphasises on the need of active and strict disease surveillance at each follow-up.
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Singh S, Singh PK, Suhail H, Arumugaswami V, Pellett PE, Giri S, Kumar A. AMP-Activated Protein Kinase Restricts Zika Virus Replication in Endothelial Cells by Potentiating Innate Antiviral Responses and Inhibiting Glycolysis. THE JOURNAL OF IMMUNOLOGY 2020; 204:1810-1824. [PMID: 32086387 DOI: 10.4049/jimmunol.1901310] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 01/18/2020] [Indexed: 12/17/2022]
Abstract
Viruses are known to perturb host cellular metabolism to enable their replication and spread. However, little is known about the interactions between Zika virus (ZIKV) infection and host metabolism. Using primary human retinal vascular endothelial cells and an established human endothelial cell line, we investigated the role of AMP-activated protein kinase (AMPK), a master regulator of energy metabolism, in response to ZIKV challenge. ZIKV infection caused a time-dependent reduction in the active phosphorylated state of AMPK and of its downstream target acetyl-CoA carboxylase. Pharmacological activation of AMPK using 5-aminoimidazole-4-carboxamide ribonucleotide (AICAR), metformin, and a specific AMPKα activator (GSK621) attenuated ZIKV replication. This activity was reversed by an AMPK inhibitor (compound C). Lentivirus-mediated knockdown of AMPK and the use of AMPKα-/- mouse embryonic fibroblasts provided further evidence that AMPK has an antiviral effect on ZIKV replication. Consistent with its antiviral effect, AMPK activation potentiated the expression of genes with antiviral properties (e.g., IFNs, OAS2, ISG15, and MX1) and inhibited inflammatory mediators (e.g., TNF-α and CCL5). Bioenergetic analysis showed that ZIKV infection evokes a glycolytic response, as evidenced by elevated extracellular acidification rate and increased expression of key glycolytic genes (GLUT1, HK2, TPI, and MCT4); activation of AMPK by AICAR treatment reduced this response. Consistent with this, 2-deoxyglucose, an inhibitor of glycolysis, augmented AMPK activity and attenuated ZIKV replication. Thus, our study demonstrates that the anti-ZIKV effect of AMPK signaling in endothelial cells is mediated by reduction of viral-induced glycolysis and enhanced innate antiviral responses.
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Bishnoi SK, He X, Phuke RM, Kashyap PL, Alakonya A, Chhokar V, Singh RP, Singh PK. Karnal Bunt: A Re-Emerging Old Foe of Wheat. FRONTIERS IN PLANT SCIENCE 2020; 11:569057. [PMID: 33133115 PMCID: PMC7550625 DOI: 10.3389/fpls.2020.569057] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 09/09/2020] [Indexed: 05/18/2023]
Abstract
Wheat (Triticum aestivum L.) crop health assumes unprecedented significance in being the second most important staple crop of the world. It is host to an array of fungal pathogens attacking the plant at different developmental stages and accrues various degrees of yield losses owing to these. Tilletia indica that causes Karnal bunt (KB) disease in wheat is one such fungal pathogen of high quarantine importance restricting the free global trade of wheat besides the loss of grain yield as well as quality. With global climate change, the disease appears to be shifting from its traditional areas of occurrence with reports of increased vulnerabilities of new areas across the continents. This KB vulnerability of new geographies is of serious concern because once established, the disease is extremely difficult to eradicate and no known instance of its complete eradication using any management strategy has been reported yet. The host resistance to KB is the most successful as well as preferred strategy for its mitigation and control. However, breeding of KB resistant wheat cultivars has proven to be not so easy, and the low success rate owes to the scarcity of resistance sources, extremely laborious and regulated field screening protocols delaying identification/validation of putative resistance sources, and complex quantitative nature of resistance with multiple genes conferring only partial resistance. Moreover, given a lack of comprehensive understanding of the KB disease epidemiology, host-pathogen interaction, and pathogen evolution. Here, in this review, we attempt to summarize the progress made and efforts underway toward a holistic understanding of the disease itself with a specific focus on the host-pathogen interaction between T. indica and wheat as key elements in the development of resistant germplasm. In this context, we emphasize the tools and techniques being utilized in development of KB resistant germplasm by illuminating upon the genetics concerning the host responses to the KB pathogen including a future course. As such, this article could act as a one stop information primer on this economically important and re-emerging old foe threatening to cause devastating impacts on food security and well-being of communities that rely on wheat.
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Phuke RM, He X, Juliana P, Bishnoi SK, Singh GP, Kabir MR, Roy KK, Joshi AK, Singh RP, Singh PK. Association Mapping of Seedling Resistance to Tan Spot ( Pyrenophora tritici-repentis Race 1) in CIMMYT and South Asian Wheat Germplasm. FRONTIERS IN PLANT SCIENCE 2020; 11:1309. [PMID: 32983199 PMCID: PMC7483578 DOI: 10.3389/fpls.2020.01309] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Accepted: 08/11/2020] [Indexed: 05/08/2023]
Abstract
Tan spot caused by Pyrenophora tritici-repentis (Ptr) is an important disease of wheat in many wheat producing areas of the world. A genome wide association study (GWAS) was conducted using 11,401 SNP markers of the Illumina Infinium 15K Bead Chip with whole genome coverage to identify genomic regions associated with resistance to tan spot in a diverse panel of 184 wheat genotypes originating from South Asia and CIMMYT. The GWAS panel was phenotyped for seedling resistance to tan spot with Ptr race 1 in two greenhouse experiments. Besides CIMMYT germplasm, several lines from South Asia (India, Bangladesh and Nepal) showed good degree of resistance to tan spot. Association mapping was conducted separately for individual experiments and for pooled data using mixed linear model (MLM) and Fixed and random model Circulating Probability Unification (FarmCPU) model; no significant MTAs were recorded through the MLM model, whereas FarmCPU model reported nine significant MTAs located on chromosomes 1B, 2A, 2B, 3B, 4A, 5A, 5B, 6A, and 7D. The long arms of chromosomes 5A and 5B were consistent across both environments, in which the Vrn-A1 locus was found in identified region of chromosome 5A, and MTA at IACX9261 on 5BL appears to represent the resistance gene tsn 1. MTAs observed on chromosomes 1B, 2A, 2B, 3B, 4A, 6A, and 7D have not been reported previously and are likely novel.
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Kumar P, Chaudhry D, Parmar A, Tyagi D, Manjunath BG, Singh PK. Ultraviolet Box: An Innovative In-house Use of Ultraviolet Irradiation for Conservation of Respirators in COVID-19 Pandemic. Indian J Crit Care Med 2020; 24:713-715. [PMID: 33024381 PMCID: PMC7519598 DOI: 10.5005/jp-journals-10071-23534] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Aim To use ultraviolet (UV) radiations in an indigenous method for sterilization of respirators for reuse during COVID-19 outbreak. Background COVID-19 outbreak has infected more than 200 countries. In India, till now, more than 100,000 cases have been reported. Healthcare workers are at high risk of developing infections being in the frontline of taking care of COVDI-19 cases. The demands of personal protective equipment (PPE) are increasing, but the same is not matched with supply due to various reasons. In such scenarios, reusing respirators and face shields is an alternative. UV radiations have quick action and are able to preserve the quality of respirators. We have developed a UV box for surface sterilization of respirators with an intention to reuse. Technique A thermocol box was taken from the central drug store and was fitted with two UV tubes of 254 nm wavelength procured from local service center of water purifiers. The position of the two tubes was such that one was near the base while other was fixed at the top. An aluminum mesh frame was placed in the middle of the box to act as a platform. The roof of the box was converted into a lid. The effectiveness of assembly was tested using culture of Escherichia coli and Staphylococcus aureus. In addition, a biological indicator tube containing test strip with spores of Bacillus atrophaeus was also exposed to UV light for a predefined duration, which did not show any color change after incubation for 48 hours. Conclusion Our prototype assembly with supported efficacy from microbiological tests is an option for use of UV light within available resources for disinfection and reuse of scarce supplies of personal protective equipment. Clinical significance UV box can help in meeting the demand supply deficit for respirators, face shields, and goggles that are paramount for the protection of HCW. How to cite this article Kumar P, Chaudhry D, Parmar A, Tyagi D, BG Manjunath, Singh PK. Ultraviolet Box: An Innovative In-house Use of Ultraviolet Irradiation for Conservation of Respirators in COVID-19 Pandemic. Indian J Crit Care Med 2020;24(8):713-715.
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Kapil S, Singh PK, Kashyap A, Silakari O. Structure based designing of benzimidazole/benzoxazole derivatives as anti-leishmanial agents. SAR AND QSAR IN ENVIRONMENTAL RESEARCH 2019; 30:919-933. [PMID: 31702401 DOI: 10.1080/1062936x.2019.1684357] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 10/21/2019] [Indexed: 06/10/2023]
Abstract
Folates are essential biomolecules required to carry out many crucial processes in leishmania parasite. Dihydrofolate reductase-thymidylate synthase (DHFR-TS) and pteridine reductase 1 (PTR1) involved in folate biosynthesis in leishmania have been established as suitable targets for development of chemotherapy against leishmaniasis. In the present study, various computational tools such as homology modelling, pharmacophore modelling, docking, molecular dynamics and molecular mechanics have been employed to design dual DHFR-TS and PTR1 inhibitors. Two designed molecules, i.e. 2-(4-((4-nitrobenzyl)oxy)phenyl)-1H-benzo[d]imidazole and 2-(4-((2,4-dichlorobenzyl)oxy)phenyl)-1H-benzo[d]oxazolemolecules were synthesized. MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide) assay was performed to evaluate in vitro activity of molecules against promastigote form of Leishmania donovani using Miltefosine as standard. 2-(4-((4-nitrobenzyl)oxy)phenyl)-1H-benzo[d]imidazole and 2-(4-((2,4-dichlorobenzyl)oxy)phenyl)-1H-benzo[d]oxazolemolecules were found to be moderately active with showed IC50 = 68 ± 2.8 µM and 57 ± 4.2 µM, respectively.
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Singh PK, Singh S, Deng Z, He X, Kehel Z, Singh RP. Characterization of QTLs for Seedling Resistance to Tan Spot and Septoria Nodorum Blotch in the PBW343/Kenya Nyangumi Wheat Recombinant Inbred Lines Population. Int J Mol Sci 2019; 20:E5432. [PMID: 31683619 PMCID: PMC6862150 DOI: 10.3390/ijms20215432] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 10/25/2019] [Accepted: 10/28/2019] [Indexed: 11/25/2022] Open
Abstract
Tan spot (TS) and Septoria nodorum blotch (SNB) induced by Pyrenophora tritici-repentis and Parastagonospora nodorum, respectively, cause significant yield losses and adversely affect grain quality. The objectives of this study were to decipher the genetics and map the resistance to TS and SNB in the PBW343/Kenya Nyangumi (KN) population comprising 204 F6 recombinant inbred lines (RILs). Disease screening was performed at the seedling stage under greenhouse conditions. TS was induced by P. tritici-repentis isolate MexPtr1 while SNB by P. nodorum isolate MexSN1. Segregation pattern of the RILs indicated that resistance to TS and SNB in this population was quantitative. Diversity Array Technology (DArTs) and simple sequence repeats (SSRs) markers were used to identify the quantitative trait loci (QTL) for the diseases using inclusive composite interval mapping (ICIM). Seven significant additive QTLs for TS resistance explaining 2.98 to 23.32% of the phenotypic variation were identified on chromosomes 1A, 1B, 5B, 7B and 7D. For SNB, five QTLs were found on chromosomes 1A, 5A, and 5B, explaining 5.24 to 20.87% of the phenotypic variation. The TS QTL on 1B chromosome coincided with the pleiotropic adult plant resistance (APR) gene Lr46/Yr29/Pm39. This is the first report of the APR gene Lr46/Yr29/Pm39 contributing to TS resistance.
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Mangwani N, Singh PK, Kumar V. Medicinal plants: Adjunct treatment to tuberculosis chemotherapy to prevent hepatic damage. J Ayurveda Integr Med 2019; 11:522-528. [PMID: 31679802 PMCID: PMC7772497 DOI: 10.1016/j.jaim.2019.02.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 12/29/2018] [Accepted: 02/18/2019] [Indexed: 02/07/2023] Open
Abstract
The effectiveness of herbs for the management of chemically induced hepatotoxicity has been discussed by many researchers. However, there is a paucity of compressive literature on the significance of hepatoprotective plants for the management of anti-TB drug induced toxicity. Anti-TB drugs have been reported to causes hepatic damage, due to which, many patients across the globe discontinued the treatment. Medicinal plants have multiple therapeutic effects. The assessment of biological activity of plants against Mycobacterium and its use for hepatic recovery provides an effective treatment approach. Traditionally used medicinal plants are the rich source of phytochemicals and secondary metabolites. These compounds can restore normal function, enzymatic activity and structure of hepatic cells against anti-TB drug induced hepatotoxicity. The present review covers comprehensive details on different hepatoprotective and antimycobacterial plants studied during past few decades so that potential adjuvants can be studied for Tuberculosis chemotherapy.
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Mei F, Rolain M, Zhou XY, Singh PK, Thummel R, Kumar A. Zebrafish are Resistant to Staphylococcus aureus Endophthalmitis. Pathogens 2019; 8:pathogens8040207. [PMID: 31717750 PMCID: PMC6963345 DOI: 10.3390/pathogens8040207] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 10/16/2019] [Accepted: 10/23/2019] [Indexed: 12/13/2022] Open
Abstract
Gram-positive bacteria remain the leading cause of endophthalmitis, a blinding infectious disease of the eye. Murine models have been widely used for understanding the pathogenesis of bacterial endophthalmitis. In this study, we sought to develop an alternative zebrafish (Danio rerio) model for Staphylococcus aureus and compare the disease pathobiology to a murine model. Endophthalmitis was induced in zebrafish and C57BL/6 mice through the intravitreal injection of S. aureus. Disease progression was monitored by assessing corneal haze, opacity, bacterial burden, and retinal histology. Our results demonstrated that, unlike the murine models, zebrafish maintained ocular integrity, corneal transparency, and retinal architecture. We found that the zebrafish was capable of clearing S. aureus from the eye via transport through retinal vessels and the optic nerve and by mounting a monocyte/macrophage response beginning at 8 hour post-infection (hpi). The bacterial burden increased up to 8 hpi and significantly decreased thereafter. An assessment of the innate retinal response revealed the induced expression of Il-1β and Il-6 transcripts. Collectively, our study shows that unlike the murine model, zebrafish do not develop endophthalmitis and rapidly clear the pathogen. Hence, a better understanding of the zebrafish protective ocular innate response may provide new insights into the pathobiology of bacterial endophthalmitis.
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Bhar VS, Nair RR, Singh PK. Proplatelets in the Peripheral Blood: Morphological Similarity to the Process of Platelet Release. Indian J Hematol Blood Transfus 2019; 36:408-410. [PMID: 32425401 DOI: 10.1007/s12288-019-01204-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 09/30/2019] [Indexed: 10/25/2022] Open
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Gupta A, Singh PK, Sharma P, Kaur P, Sharma S, Singh TP. Structural and biochemical studies of phosphopantetheine adenylyltransferase from Acinetobacter baumannii with dephospho-coenzyme A and coenzyme A. Int J Biol Macromol 2019; 142:181-190. [PMID: 31525415 DOI: 10.1016/j.ijbiomac.2019.09.090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 09/11/2019] [Accepted: 09/11/2019] [Indexed: 11/29/2022]
Abstract
Phosphopantetheine adenylyl transferase catalyzes a rate limiting penultimate step of the multistep reaction which produces coenzyme A (CoA) as a final product. CoA is required as an essential cofactor in a number of metabolic reactions. Therefore inhibiting the function of this enzyme will lead to cell death in bacteria. Acinetobacter baumannii is multi drug resistant pathogen and causes infections in immunocompromised patients. AbPPAT has been cloned, expressed, purified and crystallized and structures of two complexes of AbPPAT with dephospho coenzyme A (dPCoA) and coenzyme A (CoA) have been determined. Both dPCoA and CoA molecules are observed in the substrate binding site of AbPPAT. A comparison with the structures of the complexes of PPAT from other species shows that the orientations of dPCoA are identical in all the structures. On the other hand, as observed from the structures of the complexes of CoA with PPAT, the orientations of CoA are found to differ considerably. This shows that the substrates occupy identical positions in the substrate binding sites of enzymes whereas the positions of inhibitors may differ. The binding studies carried out using fluorescence method and surface plasmon resonance techniques showed that binding affinity of CoA towards AbPPAT is nearly three times higher than that of dPCoA.
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Mudawal A, Srivastava A, Singh A, Shankar J, Yadav S, Mishra M, Singh PK, Khanna VK, Parmar D. Corrigendum to 'Proteomic approaches to investigate age related vulnerability to lindane induced neurodegenerative effects in rats' [Food Chem. Toxicol.] 115 (2018) 499-510. Food Chem Toxicol 2019; 133:110752. [PMID: 31431304 DOI: 10.1016/j.fct.2019.110752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Dreisigacker S, Sharma RK, Huttner E, Karimov A, Obaidi MQ, Singh PK, Sansaloni C, Shrestha R, Sonder K, Braun HJ. Tracking the adoption of bread wheat varieties in Afghanistan using DNA fingerprinting. BMC Genomics 2019; 20:660. [PMID: 31426740 PMCID: PMC6699131 DOI: 10.1186/s12864-019-6015-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 08/05/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Wheat is the most important staple crop in Afghanistan and accounts for the main part of cereal production. However, wheat production has been unstable during the last decades and the country depends on seed imports. Wheat research in Afghanistan has emphasized releases of new, high-yielding and disease resistant varieties but rates of adoption of improved varieties are uncertain. We applied DNA fingerprinting to assess wheat varieties grown in farmers' fields in four Afghan provinces. RESULTS Of 560 samples collected from farmers' fields during the 2015-16 cropping season, 74% were identified as varieties released after 2000, which was more than the number reported by farmers and indicates the general prevalence of use of improved varieties, albeit unknowingly. At the same time, we found that local varieties and landraces have been replaced and were grown by 4% fewer farmers than previously reported. In 309 cases (58.5%), farmers correctly identified the variety they were growing, while in 219 cases (41.5%) farmers did not. We also established a reference library of released varieties, elite breeding lines, and Afghan landraces, which confirms the greater genetic diversity of the landraces and their potential importance as a genetic resource. CONCLUSIONS Our study is the first in wheat to apply DNA fingerprinting at scale for an accurate assessment of wheat varietal adoption and our findings point up the importance of DNA fingerprinting for accuracy in varietal adoption studies.
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Singh PK, Kodati R, Rohilla M, Sharma P. Hemophagocytic lymphohistiocytosis: a rare association with pulmonary cryptococcosis. BMJ Case Rep 2019; 12:12/8/e230255. [PMID: 31401574 DOI: 10.1136/bcr-2019-230255] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Hemophagocytic lymphohistiocytosis (HLH) is an inflammatory syndrome characterised by unregulated macrophage and T-lymphocyte activation, resulting in cytokine overproduction and subsequent histiocytic phagocytosis. Here we report a case of pulmonary cryptococcosis, in a 59-year-old diabetic patient, with no other risk factors whose clinical course was complicated by secondary hemophagocytosis. Even after addressing the primary underlying illness (pulmonary cryptococcosis), his clinical condition continued to worsen. After excluding the other causes of HLH and possible reasons of his clinical worsening, glucocorticoids were added following which the patient experienced a remarkable improvement in his clinical and laboratory parameters. To our knowledge, this is the first case report of HLH being caused by pulmonary cryptococcosis and only second case report of cryptococcosis being complicated with HLH (previous report being associated with meningoencephalitic cryptococcosis).
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Singh L, Dubey R, Singh S, Goel R, Nair S, Singh PK. Measuring quality of antenatal care: a secondary analysis of national survey data from India. BJOG 2019; 126 Suppl 4:7-13. [DOI: 10.1111/1471-0528.15825] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/15/2019] [Indexed: 11/27/2022]
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Singh PK, Sharma V. Ototoxicity, a rare but reversible adverse effect of a commonly used antimicrobial agent. BMJ Case Rep 2019; 12:12/7/e230251. [PMID: 31302624 DOI: 10.1136/bcr-2019-230251] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
In this case report, we describe a rare manifestation of amphotericin B (AMB) toxicity. A case of fever, hepato-splenomegaly and pancytopenia was diagnosed, based on serological test and demographic profile, as visceral leishmaniasis complicated with secondary haemophagocytic lymphohistiocytosis. He was managed with conventional AMB. Subsequently, patient was showing subjective and objective improvement. Suddenly after receiving 450 mg of cumulative dose of AMB, patient developed hearing loss. On evaluation, he was found to have bilateral mixed hearing loss. Patient was investigated for the causes of hearing loss. When nothing could be attributed as an aetiology, AMB was stopped (after 500 mg cumulative dose). After missing the dose of AMB, patient had a dramatic improvement in his sense of hearing, which was confirmed objectively by audiometry before and after the event.
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Singh PK, Saxena P. Reverse halo sign in uncontrolled patient with type 2 diabetes. BMJ Case Rep 2019; 12:12/6/e230111. [PMID: 31217218 DOI: 10.1136/bcr-2019-230111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Guha R, Ghosh M, Singh PK, Sarkar R, Nasipuri M. M-HMOGA: A New Multi-Objective Feature Selection Algorithm for Handwritten Numeral Classification. JOURNAL OF INTELLIGENT SYSTEMS 2019. [DOI: 10.1515/jisys-2019-0064] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
The feature selection process is very important in the field of pattern recognition, which selects the informative features so as to reduce the curse of dimensionality, thus improving the overall classification accuracy. In this paper, a new feature selection approach named Memory-Based Histogram-Oriented Multi-objective Genetic Algorithm (M-HMOGA) is introduced to identify the informative feature subset to be used for a pattern classification problem. The proposed M-HMOGA approach is applied to two recently used feature sets, namely Mojette transform and Regional Weighted Run Length features. The experimentations are carried out on Bangla, Devanagari, and Roman numeral datasets, which are the three most popular scripts used in the Indian subcontinent. In-house Bangla and Devanagari script datasets and Competition on Handwritten Digit Recognition (HDRC) 2013 Roman numeral dataset are used for evaluating our model. Moreover, as proof of robustness, we have applied an innovative approach of using different datasets for training and testing. We have used in-house Bangla and Devanagari script datasets for training the model, and the trained model is then tested on Indian Statistical Institute numeral datasets. For Roman numerals, we have used the HDRC 2013 dataset for training and the Modified National Institute of Standards and Technology dataset for testing. Comparison of the results obtained by the proposed model with existing HMOGA and MOGA techniques clearly indicates the superiority of M-HMOGA over both of its ancestors. Moreover, use of K-nearest neighbor as well as multi-layer perceptron as classifiers speaks for the classifier-independent nature of M-HMOGA. The proposed M-HMOGA model uses only about 45–50% of the total feature set in order to achieve around 1% increase when the same datasets are partitioned for training-testing and a 2–3% increase in the classification ability while using only 35–45% features when different datasets are used for training-testing with respect to the situation when all the features are used for classification.
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Kundu S, Paul S, Singh PK, Sarkar R, Nasipuri M. Understanding NFC-Net: a deep learning approach to word-level handwritten Indic script recognition. Neural Comput Appl 2019. [DOI: 10.1007/s00521-019-04235-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Singh PK, Kasetti RB, Zode GS, Goyal A, Juzych MS, Kumar A. Zika Virus Infects Trabecular Meshwork and Causes Trabeculitis and Glaucomatous Pathology in Mouse Eyes. mSphere 2019; 4:e00173-19. [PMID: 31068433 PMCID: PMC6506617 DOI: 10.1128/msphere.00173-19] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 04/25/2019] [Indexed: 12/28/2022] Open
Abstract
Zika virus (ZIKV) infection during pregnancy leads to devastating fetal outcomes, including neurological (microcephaly) and ocular pathologies such as retinal lesions, optic nerve abnormalities, chorioretinal atrophy, and congenital glaucoma. Only clinical case reports have linked ZIKV infection to causing glaucoma, a major blinding eye disease. In the present study, we have investigated the role of ZIKV in glaucoma pathophysiology using in vitro and in vivo experimental models. We showed that human primary trabecular meshwork (Pr. TM) cells, as well as a human GTM3 cell line, were permissive to ZIKV infection. ZIKV induced the transcription of various genes expressing pattern recognition receptors (TLR2, TLR3, and RIG-I), cytokines/chemokines (TNF-α, IL-1β, CCL5, and CXCL10), interferons (IFN-α2, IFN-β1, and IFN-γ), and interferon-stimulated genes (ISG15 and OAS2) in Pr. TM cells. ZIKV infection in IFNAR1-/- and wild-type (WT) mouse eyes resulted in increased intraocular pressure (IOP) and the development of chorioretinal atrophy. Anterior chamber (AC) inoculation of ZIKV caused infectivity in iridocorneal angle and TM, leading to the death of TM cells in the mouse eyes. Moreover, anterior segment tissue of infected eyes exhibited increased expression of inflammatory mediators and interferons. Furthermore, ZIKV infection in IFNAR1-/- mice resulted in retinal ganglion cell (RGC) death and loss, coinciding with optic nerve infectivity and disruption of anterograde axonal transport. Because of similarity in glaucomatous pathologies in our study and other experimental glaucoma models, ZIKV infection can be used to study infectious triggers of glaucoma, currently an understudied area of investigation.IMPORTANCE Ocular complications due to ZIKV infection remains a major public health concern because of their ability to cause visual impairment or blindness. Most of the previous studies have shown ZIKV-induced ocular pathology in the posterior segment (i.e., retina) of the eye. However, some recent clinical reports from affected countries highlighted the importance of ZIKV in affecting the anterior segment of the eye and causing congenital glaucoma. Because glaucoma is the second leading cause of blindness worldwide, it is imperative to study ZIKV infection in causing glaucoma to identify potential targets for therapeutic intervention. In this study, we discovered that ZIKV permissively infects human TM cells and evokes inflammatory responses causing trabeculitis. Using a mouse model, we demonstrated that ZIKV infection resulted in higher IOP, increased RGC loss, and optic nerve abnormalities, the classical hallmarks of glaucoma. Collectively, our study provides new insights into ocular ZIKV infection resulting in glaucomatous pathology.
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Sethiya NK, Shekh MR, Singh PK. Wild banana [Ensete superbum (Roxb.) Cheesman.]: Ethnomedicinal, phytochemical and pharmacological overview. JOURNAL OF ETHNOPHARMACOLOGY 2019; 233:218-233. [PMID: 30686574 DOI: 10.1016/j.jep.2018.12.048] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Revised: 12/29/2018] [Accepted: 12/30/2018] [Indexed: 05/18/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Ensete superbum (Roxb.) Cheesman. (Family: Musaceae), commonly known as "Wild Banana" is well recorded as popular ethnomedicine for medicinal and nutritional uses by different people and communities native to India, Ethiopia, Thailand, Myanmar and Vietnam. AIM OF THE REVIEW Despite the wide ethnomedicinal and pharmacological studies on E. superbum, there are no concise elaborated article comprising reviews of published literature. So, herein we designed this review article to discuss the current ethnopharmacology, pharmacognosy, phytochemistry, pharmacology and intellectual property status of E. superbum. MATERIALS AND METHODS Exhaustive literature searches were performed on E. superbum through various scientific and patent search engines such as Google Scholar, Scopus, PubMed, USPTO, Google patents, and Espacenet, using different keywords for screening of relevant information. RESULTS E. superbum was recorded in different regions of the world for ailments such as dog bite, calculi, semen production, abortion, leucorrhoea, stomachache, immune response, pain, diabetes, psychosomatic, contraceptive, umbilical cord care, convulsions, pneumonia, cholera, labor and delivery pain, dehydration, appendicitis, chickenpox, measles, urinary problems, food poisoning, snake bites, diarrhoea, dysentery, jaundice, bone fracture, infections, fever, asthma, hiccups and leucoderma. Major bioactive phytochemicals such as triterpenoid esters, proanthocyanidin, pro-pelargonidin glucosides, pelargonidin, anigorufone, hydroxyanigorufone, β-carboline alkaloids and fractions such as VIDR-2T, VIDR-2GC, VIDR-2GD were reported. Pharmacologically, E. superbum was found to be non-toxic (LD50 = 3235.9 mg/kg) and has been reported to possesses antiurolithiatic, antidiabetic, antifertility, anti-estrogenic, antiviral, cardiovascular and anti-inflammatory activities. CONCLUSIONS E. superbum could be an excellent source of safe and effective medicinal and nutritional herbal remedies for human and animal consumption.
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Shekhar S, Singh PK, Vikram S, Jha CK. How important is the 4-ICG score for a thyroid surgeon? Am J Surg 2019; 219:209. [PMID: 30894252 DOI: 10.1016/j.amjsurg.2019.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Accepted: 03/06/2019] [Indexed: 10/27/2022]
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Agarwal A, Dhiraaj S, Raza M, Singhal V, Gupta D, Ranjan R, Singh PK, Singh U. Pain during Injection of Propofol: The Effect of Prior Administration of Ephedrine. Anaesth Intensive Care 2019; 32:657-60. [PMID: 15535489 DOI: 10.1177/0310057x0403200508] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Propofol causes pain on intravenous injection in 28 to 90% of patients. A number of techniques have been tried to minimize propofol-induced pain, with variable results. In a randomized, double-blind, placebo-controlled trial, we compared the efficacy of ephedrine 30 μg/kg pretreatment to lignocaine 40 mg for prevention of propofol-induced pain. Ninety-three adult patients, ASA 1 and 2, undergoing elective laparoscopic cholecystectomy were randomly assigned to three groups of 31 each. Group 1 received normal saline, group 2 received lignocaine 2% (40 mg) and group 3 received 30 μg/kg ephedrine. All pretreatment drugs were made up to 2 ml. Pain at the time of propofol injection was assessed on a four-point scale: 0=no pain, 1=mild pain, 2=moderate pain, and 3=severe pain. Twenty-seven patients (87%) of ephedrine pretreatment patients had pain during intravenous injection of propofol as compared to 24 (77%) in the normal saline group. In the lignocaine group, propofol-induced pain was observed in only 13 (42%) when compared with other study groups (P<0.05). Pretreatment with ephedrine 30 μg/kg did not attenuate pain associated with intravenous injection of propofol, nor did it improve haemodynamic stability during induction. However, pretreatment with 2% lignocaine (40 mg) was effective in attenuating propofol-associated pain.
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