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Cytochrome P450 BM3 of Bacillus megaterium-A possible endosulfan biotransforming gene

Journal of Environmental Sciences 2014年第11期26卷 2307-2314页

作者： Muhil Vannan Seralathan Saravanadevi Sivanesan Amit Bafana sanjay madanchand kashyap Arrigo Patrizio Kannan Krishnamurthi Tapan Chakrabarti Environmental Health Division CSIR-NEERI Nagpur 440020 India Analytical Instrumentation Division CSIR-NEERI Nagpur 440020 India CNR-ISMAC via De Marini 616149 Genova Italy

Computing chemistry was applied to understand biotransforrnation mechanism of an organochlorine pesticide, endosulfan. The stereo specific metabolic activity of human CYP-2B6 （cytochrome P450） on endosulfan has been well demonstrated. Sequence and structural similarity search revealed that the bacterium Bacillus megaterium encodes CYP-BM3, which is similar to CYP-2B6. The functional similarity was studied at organism level by batch-scale studies and it was proved that B. megaterium could metabolize endosulfan to endosulfan sulfate, as CYP-2B6 does in human system. The gene expression analyses also confirmed the possible role of CYP-BM3 in endosulfan metabolism. Thus, our results show that the protein structure based in-silico approach can help us to understand and identify microbes for remediation strategy development. To the best of our knowledge this is the first report which has extrapolated the bacterial gene for endosulfan biotransformation through in silico prediction approach for metabolic gene identification.

关键词： Protein structure similarity CYP-2B6 CYP-BM3 Endosulfan

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Induction of apoptosis in leukemic cells by the alkaloid extract of garden cress(Lepidium sativum L.)

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Journal of Integrative Medicine 2019年第3期17卷 221-228页

作者： Shriniwas S.Basaiyye sanjay kashyap Kannan Krishnamurthi Saravanadevi Sivanesan Environmental Health Division CSIR-National Environmental Engineering Research Institute Analytical Instrument Division CSIR-National Environmental Engineering Research Institute

Objective: Garden cress(Lepidium sativum L.) is an important herb in traditional medicine used to improve production of breast milk in women and semen in men. In the present research the authors evaluated its ability to destroy leukemic cancer(Jurkat E6-1) cells, using the alkaloid extract of this ***: Constituents of the alkaloid extract were analyzed by gas chromatography–mass spectrometry(GC–MS) and their cytotoxicity in leukemic cancer cells and healthy peripheral blood mononuclear cells(PBMCs) was assessed. Cell death via apoptosis was confirmed by DNA laddering, caspase-3 activity,annexin V-fluorescein isothiocyanate and mitochondrial toxicity assays. The specific course of gene activation in treated cells was determined through quantitative polymerase chain reaction(qPCR).Results: GC–MS analysis identified six alkaloids and proto-alkaloids, namely, benzyl isothiocyanate(1),2-ethoxy-4 H-3,1-benzoxazin-4-one(2),(4 R)-2-(2-aminophenyl)-4-phenyloxazoline(3), 5-acetyl-1,2-di hydro-6-methyl-2-oxo-4-phenyl-3-pyridinecarbonitrile(4), benzo[b][1,8]-naphthyridin-5(10 H)-on e,2,4,7-trimethyl(5) and 1,4-diaminoanthraquinone(6), in the alkaloid extract of L. sativum. Of these,compound 1 was previously identified in the seeds of L. sativum. Exposure to the alkaloid extract caused death of Jurkat E6-1 cells, with median lethal concentration(LC50) of 75.25 mg/mL. However, the alkaloid extract also showed a nontoxic and proliferative(1.6-fold) effect in healthy PBMCs. Further experiments performed with Jurkat cells at LC50 and sub-LC50 doses demonstrated DNA fragmentation, activation of caspase-3 and time-dependant phosphatidylserine translocation(apoptosis) from inner to outer cell membranes. Cell toxicity and assessment of adenosine triphosphate level, together with using qPCR to evaluate expression profile of major apoptosis genes, revealed that apoptosis may be induced by disruption in the mitochondrial outer membrane potential, through activation of extrinsic a

关键词： Lepidium sativum Benzyl isothiocyanate Apoptosis Peripheral blood mononuclear cell Mitochondrial toxicity

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Extraocular retinoblastoma in Indian children:clinical,imaging and histopathological features

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International Journal of Ophthalmology(English edition) 2013年第4期6卷 481-486页

作者： Sumita Sethi Neelam Pushker Seema kashyap sanjay Sharma Mridula Mehta Sameer Bakhshi Saurbhi Khurana Supriyo Ghose Oculoplasty and Pediatric Ophthalmology Services Dr.Rajendra Prasad Centre for Ophthalmic SciencesAll India Institute of Medical Sciences Department of Ocular Pathology Dr.Rajendra Prasad Centre for Ophthalmic SciencesAll India Institute of Medical Sciences Department of Radiodiagnosis All India Institute of Medical Sciences Department of Medical Oncology Dr.B.R.Ambedkar Institute Rotary Cancer HospitalAll India Institute of Medical Sciences

AIMTo study eyes with extraocular dissemination (EORB), with the following aims: first to establish the mean lag period and to understand various reasons for delayed presentation, second to study their imaging profile... 详细信息

关键词： extraocular retinoblastoma imaging histopathological features

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Critical care practice in India:Results of the intensive care unit need assessment survey(ININ2018)

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World Journal of Critical Care Medicine 2020年第2期9卷 31-42页

作者： Rahul kashyap Kirtivardhan Vashistha Chetan Saini Taru Dutt Dileep Raman Vikas Bansal Harpreet Singh Geeta Bhandari Nagarajan Ramakrishnan Harshit Seth Divya Sharma Premkumar Seshadri Mradul Kumar Daga Mohan Gurjar Yash Javeri Salim Surani Joseph Varon 无 Department of Anesthesiology and Perioperative Medicine Mayo ClinicRochesterMN 55905United States Department of Infectious Disease Mayo ClinicRochesterMN 55905United States Department of Internal Medicine Allegheny General HospitalPittsburghPA 15212United States Department of Radiology Mayo ClinicRochesterMN 55905United States Department of Medicine Jacobi Medical Center/Albert Einstein College of MedicineBronxNY 14061United States Department of Neurology Mayo ClinicRochesterMN 55905United States and Department of PsychiatryHennepin County Medical CenterMinneapolisMN 55415United States Department of Medicine Cloud Physician HealthcareBangalore 560038India Department of Critical Care Medicine Mayo ClinicRochesterMN 55905United States Department of Internal Medicine Maulana Azad Medical College&Associated HospitalsNew DelhiDelhi 110002India Department of Anesthesiology Government Medical CollegeHaldwaniNainital 263129India Department of Critical Care Medicine Apollo HospitalsChennai 600006India Department of Hospitalist Medicine Allegany ClinicAllegany Health NetworkPittsburghPA 15222United States Premkumar Seshadri Department of MedicineMAAGF HealthcareChennai 600024India Department of Internal Medicine and Center for Occupational and Environment Health Maulana Azad Medical CollegeNew DelhiDelhi 110002India Department of Critical Care Medicine Sanjay Gandhi Postgraduate Institute of Medical SciencesLucknow 226014India Department of Critical Care Medicine Regency Super Speciality HospitalLucknow 208005India Nayati Healthcare New DelhiDelhi 110065India Department of Pulmonary and Critical Care Medicine Texas A&M UniversityCollege StationTX 77843United States Department of Critical Care United Memorial Medical CenterHoustonTX 77091United States ININ-2018 Investigators Team

BACKGROUND A diverse country like India may have variable intensive care units(ICUs)practices at state and city *** To gain insight into clinical services and processes of care in ICUs in India,this would help plan for potential educational and quality improvement *** The Indian ICU needs assessment research group of diverse-skilled individuals was formed.A pan-India survey"Indian National ICU Needs"assessment(ININ 2018-I)was designed on google forms and deployed from July 23rd-August 25th,*** survey was sent to select distribution lists of ICU providers from all 29 states and 7 union territories(UTs).In addition to emails and phone calls,social medial applications-WhatsApp™,Facebook™and LinkedIn™were used to remind and motivate *** completing and submitting the survey,providers gave their consent for research *** study was deemed eligible for category-2 Institutional Review Board exempt *** There were total 134 adult/adult-pediatrics ICU responses from 24(83%out of 29)states,and two(28%out of 7)UTs in 61 *** had median(IQR)16(10-25)beds and most,were mixed medical-surgical,111(83%),with 108(81%)being adult-only *** responders were young,median(IQR),38(32-44)years age and majority,n=108(81%)were *** consultants were,n=101(75%).A total of 77(57%)reported to have 24 h in-house intensivist.A total of 68(51%)ICUs reported to have either 2:1 or 2≥:1 patient:nurse *** than 80%of the ICUs were open,and mixed *** followed regularly by the ICUs included sepsis care,ventilator-associated pneumonia(83%each);nutrition(82%),deep vein thrombosis prophylaxis(87%),stress ulcer prophylaxis(88%)and glycemic control(92%).Digital infrastructure was found to be poor,with only 46%of the ICUs reporting high-speed internet *** In this large,national,semi-structured,need-assessment survey,the need for improved manpower including;in-house intensivists,and decreasing

关键词： Intensive care unit Critical care India Survey Intensive care unit survey Intensive care unit needs

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