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https://www.readbyqxmd.com/read/29287899/strategizing-for-the-purification-of-a-multiple-big-domain-containing-protein-in-native-conformation-is-worth-it
#1
Asmita D Pawar, Deepshikha Verma, Venu Sankeshi, Rajeev Raman, Yogendra Sharma
The reliability and accuracy of conformational or functional studies of any novel multidomain protein rely on the quality of protein. The bottleneck in structural studies with the complete Big_2 domain containing proteins like LigA, LigB or MpIBP is usually their large molecular size owing to their multidomain (>10-12 domains) architectures. Interestingly, a soil bacterium Paenarthrobacter aurescens TC1, harbours a gene that encodes a protein comprising of four predicted Big_2 domains. We report here the expression and purification of this novel, multiple Big_2 domains containing protein, Arig of P...
December 26, 2017: Protein Expression and Purification
https://www.readbyqxmd.com/read/29243556/-preferences-of-aaa-aag-codon-recognition-by-modified-nucleosides-%C3%AF-m5s2u34-and-t6a37-present-in-trnalys
#2
Kailas D Sonawane, Asmita S Kamble, Prayagraj M Fandilolu
Deficiency of 5-taurinomethyl-2-thiouridine, τm5s2U at the 34th 'wobble' position in tRNALys causes MERRF (Myoclonic Epilepsy with Ragged Red Fibers), a neuromuscular disease. This modified nucleoside of mt tRNALys, recognizes AAA/AAG codons during protein biosynthesis process. Its preference to identify cognate codons has not been studied at the atomic level. Hence, multiple MD simulations of various molecular models of anticodon stem loop (ASL) of mt tRNALys in presence and absence of τm5s2U34 and N6-threonylcarbamoyl adenosine (t6A37) along with AAA and AAG codons have been accomplished...
December 15, 2017: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/29242294/in-vivo-il-12-il-23p40-neutralization-blocks-th1-th17-response-after-allogeneic-hematopoietic-cell-transplantation
#3
Joseph Pidala, Francisca Beato, Jongphil Kim, Brian Betts, Heather Jim, Elizabeth Sagatys, John E Levine, James Lm Ferrara, Umut Ozbek, Ernesto Ayala, Marco Davila, Hugo F Fernandez, Teresa Field, Mohamed A Kharfan-Dabaja, Divis Khaira, Farhad Khimani, Frederick L Locke, Asmita Mishra, Michael Nieder, Taiga Nishihori, Lia Perez, Marcie Riches, Claudio Anasetti
T helper 1 and T helper 17 lymphocytes mediate acute graft vs. host disease. Interleukin 12 is critical for T helper 1 differentiation and interleukin 23 for T helper 17 maintenance. Interleukin 12 and 23 are heterodimeric cytokines that share the p40 subunit (IL-12/IL-23p40). In a randomized, blinded, placebo-controlled trial, we examined the biologic impact and clinical outcomes following IL-12/IL-23p40 neutralization using ustekinumab. 30 patients received peripheral blood mobilized hematopoietic cell transplantation from HLA-matched sibling or unrelated donors, received sirolimus plus tacrolimus as graft vs...
December 14, 2017: Haematologica
https://www.readbyqxmd.com/read/29206915/phylogenetic-distribution-of-cmp-neu5ac-hydroxylase-cmah-the-enzyme-synthetizing-the-pro-inflammatory-human-xeno-antigen-neu5gc
#4
Sateesh Peri, Asmita Kulkarni, Felix Feyertag, Patricia M Berninsone, David Alvarez-Ponce
The enzyme CMP-N-acetylneuraminic acid hydroxylase (CMAH) is responsible for the synthesis of N-glycolylneuraminic acid (Neu5Gc), a sialic acid present on the cell surface proteins of most deuterostomes. The CMAH gene is thought to be present in most deuterostomes, but it has been inactivated in a number of lineages, including humans. The inability of humans to synthesize Neu5Gc has had several evolutionary and biomedical implications. Remarkably, Neu5Gc is a xenoantigen for humans, and consumption of Neu5Gc-containing foods, such as red meats, may promote inflammation, arthritis and cancer...
November 30, 2017: Genome Biology and Evolution
https://www.readbyqxmd.com/read/29174840/physicochemical-pharmacokinetic-efficacy-and-toxicity-profiling-of-a-potential-nitrofuranyl-methyl-piperazine-derivative-iiim-mcd-211-for-oral-tuberculosis-therapy-via-in-silico-in-vitro-in-vivo-approach
#5
Asmita Magotra, Anjna Sharma, Samsher Singh, Probir Kumar Ojha, Sunil Kumar, Naveen Bokolia, Priya Wazir, Shweta Sharma, Inshad Ali Khan, Parvinder Pal Singh, Ram A Vishwakarma, Gurdarshan Singh, Utpal Nandi
Recent tuberculosis (TB) drug discovery programme involve continuous pursuit for new chemical entity (NCE) which can be not only effective against both susceptible and resistant strains of Mycobacterium tuberculosis (Mtb) but also safe and faster acting with the target, thereby shortening the prolonged TB treatments. We have identified a potential nitrofuranyl methyl piperazine derivative, IIIM-MCD-211 as new antitubercular agent with minimum inhibitory concentration (MIC) value of 0.0072 μM against H37Rv strain...
November 21, 2017: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/29112105/secretome-conveys-the-protective-effects-of-ascs-therapeutic-potential-following-hemorrhagic-shock
#6
Mostafa Ashmwe, Carina Penzenstadler, Arian Bahrami, Anton Klotz, Mohammad Jafarmadar, Asmita Banerjee, Susanne Wolbank, Heinz Redl, Soheyl Bahrami
OBJECTIVES: We tested whether resuscitation supplemented with a) rat adipose-derived stem cells (ASCs) or b) secretome (conditioned media) of ASCs can ameliorate inflammation, cell/organ injury, and/or improve outcome after Hemorrhagic traumatic shock (HTS). INTERVENTIONS: Rats were subjected to HTS and a resuscitation protocol that mimics pre-hospital restrictive reperfusion followed by an adequate reperfusion phase. 20 minutes into the restrictive reperfusion, animals received an intravenous bolus of 2x10 cells (ASC group) or the secretome produced by 2x10 ASCs/24 h (ASC-Secretome group)...
November 3, 2017: Shock
https://www.readbyqxmd.com/read/29108848/pharmacokinetics-pharmacodynamics-and-safety-profiling-of-is01957-a-preclinical-candidate-possessing-dual-activity-against-inflammation-and-nociception
#7
Anjna Sharma, Asmita Magotra, Ashish Dogra, Santosh Kumar Rath, Sheikh Rayees, Priya Wazir, Sadhana Sharma, Payare Lal Sangwan, Surjeet Singh, Gurdarshan Singh, Utpal Nandi
In spite of unprecedented advances in modern systems of medicine, there is necessity for exploration of traditional plant based secondary metabolites or their semisynthetic derivatives which may results in better therapeutic activity, low toxicity and favourable pharmacokinetics. In this context, computational model based predictions aid medicinal chemists in rational development of new chemical entity having unfavourable pharmacokinetic properties which is a major hurdle for its further development as a drug molecule...
November 3, 2017: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/29107006/conformational-preferences-and-structural-analysis-of-hypermodified-nucleoside-peroxywybutosine-o2yw-found-at-37th-position-in-anticodon-loop-of-trna-phe-and-its-role-in-modulating-uuc-codon-anticodon-interactions
#8
Prayagraj M Fandilolu, Asmita S Kamble, Susmit B Sambhare, Kailas D Sonawane
Hypermodified bases present at 3'-adjacent (37th) position in anticodon loop of tRNA(Phe) are well known for their contribution in modulating codon-anticodon interactions. Peroxywybutosine (o2yW), a wyosine family member, is one of such tricyclic modified base observed at the 37th position in tRNA(Phe). Conformational preferences and three-dimensional structural analysis of peroxywybutosine have not been investigated in detail at atomic level. Hence, in the present study quantum chemical semi-empirical RM1 and multiple molecular dynamics (MD) simulations have been used to study structural significance of peroxywybutosine in tRNA(Phe)...
October 26, 2017: Gene
https://www.readbyqxmd.com/read/29033747/craniopagus-twins-for-magnetic-resonance-imaging
#9
Raghavendra Vagyannavar, Amrita Bhattacharyya, Gaurav Misra, Mohammad Hashim, Asmita
No abstract text is available yet for this article.
October 2017: Saudi Journal of Anaesthesia
https://www.readbyqxmd.com/read/28964297/paediatric-endonasal-dacryocystorhinostomy-using-an-otology-set-how-i-do-it
#10
Hetal Marfatia, Keya Shah, Asmita Madhavi, Yogesh Parmar
INTRODUCTION: Endonasal DCR is safely performed in children presenting with persistent epiphora, not responding to conservative management. The surgical technique of endoscopic DCR in the paediatric age group essentially remains the same as that performed in adults, but children have narrower nasal passages and relatively larger inferior turbinates which limit the surgeon's working space. The standard 2.7 mm paediatric nasal endoscope gives a smaller surgical work field as compared to the 4 mm adult endoscope...
October 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28709485/biofilm-colonization-of-mycobacterium-abscessus-new-threat-in-hospital-acquired-surgical-site-infection
#11
Roumi Ghosh, Soumen Das, Harish Kela, Asmita De, Jayeeta Haldar, Prasanta Kumar Maiti
INTRODUCTION: Rapidly growing non-tuberculous mycobacteria (NTM) are hazardous cause of post-operative soft tissue infection leading to nosocomial outbreaks following various surgical procedures, especially laparoscopic surgeries using heat sensitive, non-autoclavable surgical instruments. METHODOLOGY: Surgery department of our hospital noticed increase in rate of post-laparoscopic abdominal port site infection (PSI) and informed the Microbiology Department. A prospective investigational study of defined cases with the aim of source tracing and formulation of infection control measures was initiated...
July 2017: Indian Journal of Tuberculosis
https://www.readbyqxmd.com/read/28703809/epigallocatechin-3-gallate-a-prototypic-chemopreventative-agent-for-protection-against-cisplatin-based-ototoxicity
#12
Vikrant Borse, Raheem F H Al Aameri, Kelly Sheehan, Sandeep Sheth, Tejbeer Kaur, Debashree Mukherjea, Srinivasan Tupal, Michelle Lowy, Sumana Ghosh, Asmita Dhukhwa, Puspanjali Bhatta, Leonard P Rybak, Vickram Ramkumar
Cisplatin-induced ototoxicity is one of the major factors limiting cisplatin chemotherapy. Ototoxicity results from damage to outer hair cells (OHCs) and other regions of the cochlea. At the cellular level, cisplatin increases reactive oxygen species (ROS) leading to cochlear inflammation and apoptosis. Thus, ideal otoprotective drugs should target oxidative stress and inflammatory mechanisms without interfering with cisplatin's chemotherapeutic efficacy. In this study, we show that epigallocatechin-3-gallate (EGCG) is a prototypic agent exhibiting these properties of an effect otoprotective agent...
July 13, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28687222/tp53-and-idh2-somatic-mutations-are-associated-with-inferior-overall-survival-after-allogeneic-hematopoietic-cell-transplantation-for-myelodysplastic-syndrome
#13
Mohamed A Kharfan-Dabaja, Rami S Komrokji, Qing Zhang, Ambuj Kumar, Athanasios Tsalatsanis, Janelle Perkins, Taiga Nishihori, Teresa Field, Najla Al Ali, Asmita Mishra, David Sallman, Karma Z Salem, Ling Zhang, Lynn Moscinski, Hugo F Fernandez, Jeffrey Lancet, Alan List, Claudio Anasetti, Eric Padron
BACKGROUND: Next-generation sequencing has identified somatic mutations that are prognostic of cancer. PATIENTS AND METHODS: We evaluated the incidence and prognostic significance of somatic mutations in 89 myelodysplastic syndrome (MDS) patients who received an allogeneic hematopoietic cell transplantation. Next-generation sequencing was performed on paraffin embedded bone marrow, which was obtained at a median of 31 days before initiating the preparative regimen...
November 2017: Clinical Lymphoma, Myeloma & Leukemia
https://www.readbyqxmd.com/read/28679548/zebrafish-lipid-droplets-regulate-embryonic-atp-homeostasis-to-power-early-development
#14
Asmita Dutta, Deepak Kumar Sinha
In zebrafish embryos, the maternally supplied pool of ATP is insufficient to power even the earliest of developmental events (0-3 hpf) such as oocyte-to-embryo transition (OET). The embryos generate an additional pulse (2.5 h long) of ATP (1.25-4 hpf) to achieve the embryonic ATP homeostasis. We demonstrate that the additional pulse of ATP is needed for successful execution of OET. The maternally supplied yolk lipids play a crucial role in maintaining the embryonic ATP homeostasis. In this paper, we identify the source and trafficking routes of free fatty acids (FFAs) that feed the mitochondria for synthesis of ATP...
July 2017: Open Biology
https://www.readbyqxmd.com/read/28671163/predictors-of-mortality-of-severe-sepsis-among-adult-patients-in-the-medical-intensive-care-unit
#15
Aziz Kallikunnel Sayed Mohamed, Asmita Anilkumar Mehta, Ponneduthamkuzhy James
BACKGROUND: Sepsis is an important cause of mortality in the Intensive Care Units (ICUs) worldwide. Information regarding early predictive factors for mortality and morbidity is limited. AIMS AND OBJECTIVES: The primary objective of the study was to estimate the mortality of severe sepsis among adult patients admitted into the medical ICU. The secondary objective was to identify the predictors associated with mortality. MATERIALS AND METHODS: Adult patients admitted with severe sepsis in the medical ICU were studied...
July 2017: Lung India: Official Organ of Indian Chest Society
https://www.readbyqxmd.com/read/28668658/evaluation-of-enzyme-linked-immunosorbent-assay-for-stool-antigen-detection-for-the-diagnosis-of-cryptosporidiosis-among-hiv-negative-immunocompromised-patients-in-a-tertiary-care-hospital-of-northern-india
#16
Ujjala Ghoshal, Vidhi Jain, Asmita Dey, Prabhat Ranjan
The diagnosis of cryptosporidiosis among HIV positive patients has been the focus of many studies worldwide. However, there is a paucity of data on HIV negative immunocompromised patients like post-renal transplant recipients and those with haematological malignancies. Stool microscopy, the conventional method of diagnosis, is fraught with difficulties like cumbersome sample processing and subjective interpretation. Enzyme linked immunosorbent assay (ELISA), on the other hand, is quicker and easier. The present study was conducted in a tertiary care and super speciality hospital of north India...
June 28, 2017: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/28663152/catalase-inhibition-an-anti-cancer-property-of-flavonoids-a-kinetic-and-structural-evaluation
#17
Debashis Majumder, Asmita Das, Chabita Saha
Flavonoids are dietary polyphenols that present abundantly in fruits and vegetables. Flavonoids have inhibitory effects on enzymes and catalase is one among them. Catalase is a common enzyme ubiquitously found in all living organisms exposed to oxygen. It catalyzes the decomposition of hydrogen peroxide to water and oxygen (2H2O2→2H2O+O2). Inhibition of pure and cellular catalase from K562 cells by flavonoids was similar and exhibited the following efficacy; Myrecetin>Quercetin>Kaempferol and Quercetin>Luteolin>Apigenin demonstrating structure activity relationship...
November 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28636757/babesiosis-an-unusual-cause-of-sepsis-after-kidney-transplantation-and-review-of-the-literature
#18
Imtiaz Ather, Negiin Pourafshar, Denise Schain, Asmita Gupte, Michael J Casey
We report a unique case of babesiosis presenting as sepsis after kidney transplantation. A 70-year-old female kidney transplant recipient presented with fever, hemolytic anemia, and acute kidney injury, and met three of four systemic inflammatory response syndrome criteria. Serology was positive for Babesia microti, confirmed by polymerase chain reaction. The patient was treated with atovaquone and azithromycin and made a full recovery. Reports of babesiosis after solid organ transplantation are rare, with only four prior cases reported in the literature...
June 21, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28623772/development-and-validation-of-a-highly-sensitive-lc-esi-ms-ms-method-for-estimation-of-iiim-mcd-211-a-novel-nitrofuranyl-methyl-piperazine-derivative-with-potential-activity-against-tuberculosis-application-to-drug-development
#19
Asmita Magotra, Anjna Sharma, Ajai Prakash Gupta, Priya Wazir, Shweta Sharma, Parvinder Pal Singh, Manoj Kumar Tikoo, Ram A Vishwakarma, Gurdarshan Singh, Utpal Nandi
In the present study, a simple, sensitive, specific and rapid liquid chromatography (LC) tandem mass spectrometry (MS/MS) method was developed and validated according to the Food and Drug Administration (FDA) guidelines for estimation of IIIM-MCD-211 (a potent oral candidate with promising action against tuberculosis) in mice plasma using carbamazepine as internal standard (IS). Bioanalytical method consisted of one step protein precipitation for sample preparation followed by quantitation in LC-MS/MS using positive electrospray ionization technique (ESI) operating in multiple reaction monitoring (MRM) mode...
August 15, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28595989/volume-reduction-outweighs-biogeochemical-processes-in-controlling-phosphorus-treatment-in-aged-detention-systems
#20
Asmita Shukla, Sanjay Shukla, Michael D Annable, Alan W Hodges
Stormwater detention areas (SDAs) play an important role in treating end-of-the-farm runoff in phosphorous (P) limited agroecosystems. Phosphorus transport from the SDAs, including those through subsurface pathways, are not well understood. The prevailing understanding of these systems assumes that biogeochemical processes play the primary treatment role and that subsurface losses can be neglected. Water and P fluxes from a SDA located in a row-crop farm were measured for two years (2009-2011) to assess the SDA's role in reducing downstream P loads...
August 2017: Journal of Contaminant Hydrology
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