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https://www.readbyqxmd.com/read/29785183/evaluation-of-reirradiation-in-locally-advanced-head-and-neck-cancers-toxicity-and-early-clinical-outcomes
#1
Amit Bahl, Arun Singh Oinam, Arun Elangovan, Satinder Kaur, Gaurav Trivedi, Roshan Verma, Sudhir Bhandari, Sushmita Ghoshal, Naresh Kumar Panda
Objectives: Locoregional recurrence is the predominant pattern of treatment failure in advanced head and neck cancers. Reirradiation is a useful modality to treat inoperable head and neck cancer patients with recurrent disease. The aim of the present study was to analyze the treatment toxicity and early clinical outcomes in patients undergoing reirradiation. Methods: Twenty patients of head and neck cancers with recurrences or second cancers were evaluated. Reirradiation was done using simultaneous integrated boost volumetric modulated arc therapy (SIB VMAT), intensity modulated radiotherapy (IMRT), or conventional radiotherapy using 6MV photons...
2018: Journal of Oncology
https://www.readbyqxmd.com/read/29775225/cytokines-and-chemokines-differentially-regulate-innate-immune-cell-trafficking-during-post-kala-azar-dermal-leishmaniasis
#2
Ashish K Singh, Vidya N R Das, Ajay Amit, Manas R Dikhit, Vijaya Mahantesh, Shubhankar K Singh, Shyam Naryan, Krishna Pandey, Pradeep Das, Neena Verma, Sanjiva Bimal
Post kala-azar dermal leishmaniasis (PKDL) is often considered to be the anthroponotic reservoir of visceral leishmaniasis (VL) in India. A better understanding of the host immune-response in dermal lesions of PKDL patients is therefore of utmost significance to minimize such patients and to restrict VL transmission. Although the innate immune response is known to play an important role in parasite clearance from dermal lesions, the actual contribution of innate cells to the pathogenicity of PKDL is poorly understood...
May 18, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29773641/il1rap-potentiates-multiple-oncogenic-signaling-pathways-in-aml
#3
Kelly Mitchell, Laura Barreyro, Tihomira I Todorova, Samuel J Taylor, Iléana Antony-Debré, Swathi-Rao Narayanagari, Luis A Carvajal, Joana Leite, Zubair Piperdi, Gopichand Pendurti, Ioannis Mantzaris, Elisabeth Paietta, Amit Verma, Kira Gritsman, Ulrich Steidl
The surface molecule interleukin-1 receptor accessory protein (IL1RAP) is consistently overexpressed across multiple genetic subtypes of acute myeloid leukemia (AML) and other myeloid malignancies, including at the stem cell level, and is emerging as a novel therapeutic target. However, the cell-intrinsic functions of IL1RAP in AML cells are largely unknown. Here, we show that targeting of IL1RAP via RNA interference, genetic deletion, or antibodies inhibits AML pathogenesis in vitro and in vivo, without perturbing healthy hematopoietic function or viability...
May 17, 2018: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29710195/multiple-myeloma-and-its-precursor-disease-among-firefighters-exposed-to-the-world-trade-center-disaster
#4
Ola Landgren, Rachel Zeig-Owens, Orsolya Giricz, David Goldfarb, Kaznouri Murata, Katie Thoren, Lakshmi Ramanathan, Malin Hultcrantz, Ahmet Dogan, George Nwankwo, Ulrich Steidl, Kith Pradhan, Charles B Hall, Hillel W Cohen, Nadia Jaber, Theresa Schwartz, Laura Crowley, Michael Crane, Shani Irby, Mayris P Webber, Amit Verma, David J Prezant
Importance: The World Trade Center (WTC) attacks on September 11, 2001, created an unprecedented environmental exposure to known and suspected carcinogens suggested to increase the risk of multiple myeloma. Multiple myeloma is consistently preceded by the precursor states of monoclonal gammopathy of undetermined significance (MGUS) and light-chain MGUS, detectable in peripheral blood. Objective: To characterize WTC-exposed firefighters with a diagnosis of multiple myeloma and to conduct a screening study for MGUS and light-chain MGUS...
April 26, 2018: JAMA Oncology
https://www.readbyqxmd.com/read/29674663/gunn-hilsum-effect-in-mechanically-strained-silicon-nanowires-tunable-negative-differential-resistance
#5
Daryoush Shiri, Amit Verma, Reza Nekovei, Andreas Isacsson, C R Selvakumar, M P Anantram
Gunn (or Gunn-Hilsum) Effect and its associated negative differential resistivity (NDR) emanates from transfer of electrons between two different energy subbands. This effect was observed in semiconductors like GaAs which has a direct bandgap of very low effective mass and an indirect subband of high effective mass which lies ~300 meV above the former. In contrast to GaAs, bulk silicon has a very high energy spacing (~1 eV) which renders the initiation of transfer-induced NDR unobservable. Using Density Functional Theory (DFT), semi-empirical 10 orbital (sp3 d5 s* ) Tight Binding and Ensemble Monte Carlo (EMC) methods we show for the first time that (a) Gunn Effect can be induced in silicon nanowires (SiNW) with diameters of 3...
April 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29643632/venous-gas-embolism-in-operative-hysteroscopy-a-devastating-complication-in-a-relatively-simple-surgery
#6
Amit Verma, Madhu Pandey Singh
Venous air embolism can be a catastrophic iatrogenic complication during operative hysteroscopy and makes this simple surgical procedure very risky, especially with the lack of knowledge about its prevention, presentation, and immediate management. Three out of 13 hysteroscopic myoma resections at our center had venous gas embolism (VGE). The prevention, diagnosis, and management of VGE are described in this report of three cases.
January 2018: Journal of Anaesthesiology, Clinical Pharmacology
https://www.readbyqxmd.com/read/29643228/dual-inhibition-of-mdmx-and-mdm2-as-a-therapeutic-strategy-in-leukemia
#7
Luis A Carvajal, Daniela Ben Neriah, Adrien Senecal, Lumie Benard, Victor Thiruthuvanathan, Tatyana Yatsenko, Swathi-Rao Narayanagari, Justin C Wheat, Tihomira I Todorova, Kelly Mitchell, Charles Kenworthy, Vincent Guerlavais, D Allen Annis, Boris Bartholdy, Britta Will, Jesus D Anampa, Ioannis Mantzaris, Manuel Aivado, Robert H Singer, Robert A Coleman, Amit Verma, Ulrich Steidl
The tumor suppressor p53 is often inactivated via its interaction with endogenous inhibitors mouse double minute 4 homolog (MDM4 or MDMX) or mouse double minute 2 homolog (MDM2), which are frequently overexpressed in patients with acute myeloid leukemia (AML) and other cancers. Pharmacological disruption of both of these interactions has long been sought after as an attractive strategy to fully restore p53-dependent tumor suppressor activity in cancers with wild-type p53. Selective targeting of this pathway has thus far been limited to MDM2-only small-molecule inhibitors, which lack affinity for MDMX...
April 11, 2018: Science Translational Medicine
https://www.readbyqxmd.com/read/29599340/myelodysplastic-syndrome-and-sweet-s-syndrome-are-associated-with-a-mutation-in-isocitrate-dehydrogenase-1
#8
Rose Snyder, Tiffany Libby, Patricia Raciti, Bijal Amin, Mark Jacobson, Dinesh Rakheja, Kirsten Fleming, Matthias Bartenstein, Changcheng Zhu, Swati Goel, Amit K Verma, Aditi Shastri
BACKGROUND: Sweet's syndrome (SS) is a febrile neutrophilic dermatosis that has been clinically linked to hematological malignancies, particularly myelodysplastic syndrome (MDS), in a number of case series. Many epigenetic changes underlying MDS have been identified, such as a mutation in the isocitrate dehydrogenase 1 (IDH1) gene, which causes DNA hypermethylation and alteration of a number of genes that lead to leukemogenesis. However, the pathogenesis of malignancy-associated SS is unknown...
April 2018: Anticancer Research
https://www.readbyqxmd.com/read/29593392/oral-bioavailability-enhancement-of-agomelatine-by-loading-into-nanostructured-lipid-carriers-peyer-s-patch-targeting-approach
#9
Jagruti B Prajapati, Sneha D Verma, Amit A Patel
Agomelatine (AGM) is a new antidepressant drug with a novel mechanism of action and fewer side effects compared with older antidepressants. AGM is a melatonin receptor (MT1 and MT2) agonist and 5-hydroxytryptamine receptor (5-HT2C ) antagonist. In the present study, the enhancement of the oral bioavailability of AGM was formulated and loaded into nanostructured lipid carriers (NLCs), using ultrasonication method. In vitro and ex vivo drug release was performed using a dialysis bag and rat duodenum, respectively...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29549509/changing-profile-of-primary-hyperparathyroidism-over-two-and-half-decades-a-study-in-tertiary-referral-center-of-north-india
#10
Sanjay Kumar Yadav, Saroj Kanta Mishra, Anjali Mishra, Sabaretnam Mayilvagnan, Gyan Chand, Gaurav Agarwal, Amit Agarwal, Ashok Kumar Verma
BACKGROUND: Most of the cases of PHPT in developing countries present in symptomatic stage, some even in very advanced stage but in recent years the trend seems to be changing. This has been corroborated from few recently published literature from developing countries. The scope of this study is to further carry out an in-depth analysis of various clinical and biochemical parameters of PHPT patients at a tertiary care center of northern India. METHODS: In this retrospective analysis, a total of 333 patients with PHPT from the year 1990 to 2016 were studied...
March 16, 2018: World Journal of Surgery
https://www.readbyqxmd.com/read/29504866/diagnostic-challenges-of-adult-t-cell-leukemia-lymphoma-in-north-america-a-clinical-histological-and-immunophenotypic-correlation-with-a-workflow-proposal
#11
Michael J Licata, Murali Janakiram, Stephanie Tan, Yanan Fang, Urvi A Shah, Amit K Verma, Yanhua Wang
Adult T-cell leukemia-lymphoma (ATLL) is caused by human T-cell lymphotropic virus type 1 (HTLV-1) and little is known about ATLL endemic to the Caribbean basin and Latin America, designated as western ATLL (W-ATLL). Due to extensive systemic involvement and nonspecific clinical presentation, the initial diagnosis in this cohort can be very challenging. We have diagnosed 60 patients with W-ATLL over a 14-year period. ATLL involves the peripheral blood, bone marrow, and cerebrospinal fluid (CSF) in 98, 87, and 52% cases, respectively; while lymphadenopathy, pulmonary infiltrates, splenomegaly, and hepatomegaly was present in 90, 82, 48, and 45% patients, respectively...
May 2018: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/29486969/design-and-synthesis-of-1-4-substituted-1h-1-2-3-triazolo-quinazolin-4-3h-ones-by-huisgen-1-3-dipolar-cycloaddition-with-pi3k%C3%AE-isoform-selective-activity
#12
M Srinivas, Anup Singh Pathania, Priya Mahajan, Praveen K Verma, Santosh S Chobe, Fayaz A Malik, Amit Nargotra, Ram A Vishwakarma, Sanghapal D Sawant
A strategy for construction of medicinally important 1,4-substituted 1H-1,2,3-triazolo-quinazolin-4(3H)-ones has been devised and presented here. The compounds have been synthesized using one-pot multicomponent strategy under microwave assisted conditions. Triazolyl-quinazolinone based D-ring modified analogs are designed based on IC87114 scaffold, which is first known isoform selective inhibitor of PI3Kδ. Herein, we identified two triazolyl-quinazolinone compounds (5a and 5l) based on same scaffold with PI3Kγ specific inhibitory potential, the selectivity towards this isoform is well supported by in silico results, wherein, these compounds show better interaction and affinity and inhibitory activity for PI3Kγ rather than PI3Kδ...
April 1, 2018: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/29428921/long-term-seroprotection-rates-following-one-dose-measles-9-month-and-one-dose-mmr-vaccination-15-months-in-indian-children
#13
P Hansashree, Sanjay Verma, Amit Rawat, Naveen Sankhyan, Bhavneet Bharti
OBJECTIVE: To find out seropositivity rates at 4-6 and 9-12 years of age; among those who received one-dose measles at 9 months and one-dose MMR at 15 months of age. METHODS: 80 healthy children (53 males) at 4-6 or 9-12 years of age, attending outpatient department for vaccination were enrolled. Antibody titers were estimated using commercially available quantitative-IgG ELISA kits. RESULTS: The seropositivity rates against measles, mumps, rubella were 80% (40/50), 86% (43/50), and 96% (48/50), respectively at 4-6 years, and 83...
February 9, 2018: Indian Pediatrics
https://www.readbyqxmd.com/read/29384060/nanocarrier-based-advances-in-drug-delivery-to-tumor-an-overview
#14
Ankit Jain, Romi Kumari, Ankita Tiwari, Amit Verma, Amita Tripathi, Akanksha Shrivastava, Sanjay K Jain
BACKGROUND: Nanotechnology deals with the manufacturing of materials at the atomic and molecular scale. According to the National Nanotechnology Initiative, nanotechnology denotes those structures which are nearly in the 1-100 nm size regime in at least one dimension. OBJECTIVE: Nanotechnology in drug delivery has been evidenced into nanocarriers that possess distinct properties both in vitro and in vivo, which may be used in targeting drugs to various diseases especially tumors...
January 30, 2018: Current Drug Targets
https://www.readbyqxmd.com/read/29378433/passive-delivery-of-protein-drugs-through-transdermal-route
#15
Bivek Chaulagain, Ankit Jain, Ankita Tiwari, Amit Verma, Sanjay K Jain
Skin is the largest external organ in the human body but its use for therapeutic purposes has been minimal. Stratum corneum residing on the uppermost layer of the skin provides a tough barrier to transport the drugs across the skin. Very small group of drugs sharing Lipinski properties, i.e. drugs having molecular weight not larger than 500 Da, having high lipophilicity and optimum polarity are fortunate enough to be used on skin therapeutics. But, at a time where modern therapeutics is slowly shifting from use of small molecular drugs towards the use of macromolecular therapeutic agents such as peptides, proteins and nucleotides in origin, skin therapeutics need to be evolved accordingly to cater the delivery of these agents...
January 29, 2018: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29368178/evaluation-of-accuracy-of-virtual-surgical-planning-for-patient-specific-pre-contoured-plate-in-acetabular-fracture-fixation
#16
Lalit Maini, Tarun Verma, Amit Sharma, Ankur Sharma, Abhishek Mishra, Sunil Jha
BACKGROUND: Acetabular fractures are amongst the most challenging fractures to treat because of complex anatomy. Open reduction and internal fixation remains the standard treatment for displaced acetabular fractures to achieve anatomical reduction as in any other intra-articular fracture. Patient-specific pre-contoured reconstruction plate template made by a pre-operative virtual surgical planning can be useful to respect patient's morphology, reduce surgical invasiveness and simplify the surgical procedure...
January 24, 2018: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/29358556/cholesterol-lowering-drug-in-combination-with-chromium-chloride-induces-early-apoptotic-signals-in-intracellular-l-donovani-amastigotes-leading-to-death
#17
Amit Kumar Verma, Bhakti Laha, Monika Pandey, Uttariya Pal, Monidipa Ghosh
Leishmania establishes a successful parasitism by evading both oxidative and non-oxidative killing pathways, and its drug resistance against the currently available therapeutics demands for a safe and cheap drug. Since the parasite synthesizes ergosterol instead of cholesterol, using the same biochemical pathway and enzymes, an inhibitor of HMG-CoA-Reductase, Lovastatin, has been tried for its anti-Leishmanial effect. Lovastatin, being an inhibitor of HMG-CoA-Reductase, inhibits infection by cholesterol depletion, while chromium chloride complexes, at their higher concentrations, are reported to exhibit cytotoxicity...
September 2017: Journal of Biosciences
https://www.readbyqxmd.com/read/29351081/characterization-of-phosphate-transporter-s-and-understanding-their-role-in-leishmania-donovani-parasite
#18
K J Sindhu, Amit Kumar Kureel, Sheetal Saini, Smita Kumari, Pankaj Verma, Ambak Kumar Rai
Inorganic phosphate (Pi) is shown to be involved in excretion of methylglyoxal (MG) in the promastigote form of Leishmania donovani parasite. Absence of Pi leads to its accumulation inside the parasite. Accumulation of MG is toxic to the parasite and utilizes glyoxylase as well as excretory pathways for its detoxification. In addition, Pi is also reported to regulate activities of ectoenzymes and energy metabolism (glucose to pyruvate) etc. Thus, it is known to cumulatively affect the growth of Leishmania parasite...
March 26, 2018: Acta Parasitologica
https://www.readbyqxmd.com/read/29336403/superior-vena-cava-clamping-during-thoracic-surgery-implications-for-the-anesthesiologist
#19
Monish S Raut, Swetanka Das, Rohitash Sharma, Elvin Daniel, Amit Motihar, Arvind Verma, Sibashankar Kar, Arun Maheshwari, Ganesh Shivnani, Arvind Kumar
Resection and reconstruction of the SVC is a challenging Intraoperative situation owing to the potential complications after clamping a patent vessel. Hemodynamic imbalance and neurological effects of SVC clamping can be life threatening. These complications can be prevented by careful intraoperative monitoring and management. Anaesthesiologist must be aware of different options to manage such challenging situations.
January 2018: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/29327401/daclatasvir-and-reduced-dose-sofosbuvir-an-effective-and-pangenotypic-treatment-for-hepatitis-c-in-patients-with-egfr-30-ml-min
#20
Amit Goel, Dharmendra Singh Bhadauria, Anupma Kaul, Prashant Verma, Mayank Mehrotra, Amit Gupta, Raj Kumar Sharma, Praveer Rai, Rakesh Aggarwal
BACKGROUND & AIMS: Sofosbuvir is a key agent for HCV treatment. It is not recommended for patients with chronic kidney disease (CKD) and estimated glomerular filtration rate (eGFR) <30 mL/min. We report real-life experience of treating a cohort of CKD patients with eGFR <30 mL/min using daclatasvir and half-daily dose of sofosbuvir. METHODS: Adults patients who (i) had eGFR<30 ml/min and detectable HCV RNA and (ii) were treated with interferon and ribavirin free, DAA based regimens were included...
January 12, 2018: Nephrology
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