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Callegari M, Jella T, Mahran A, Muncey W, Gupta K, Omil-Lima D, Loeb A, Thirumavalavan N. 033 Trends in Testosterone Prescription Modalities Amongst Medical Specialties: A 5-year CMS Data Analysis (2013-2017). J Sex Med 2021. [DOI: 10.1016/j.jsxm.2021.01.102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Gupta K, Shivabalan, Kumar V, Vyas S, Pandey RM, Jagannathan NR, Sinha S. Cognitive Performance and Neuro-Metabolites in HIV Using 3T Magnetic Resonance Spectroscopy: A Cross-Sectional Study from India. Curr HIV Res 2021; 19:147-153. [PMID: 33106144 DOI: 10.2174/1570162x18666201026141729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 09/08/2020] [Accepted: 09/22/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Cognitive impairment in patients with human immunodeficiency virus (HIV) is associated with higher morbidity. The prevalence of the metabolite changes in the brain associated with cognitive impairment in anti-retroviral therapy naïve patients with HIV is unknown. OBJECTIVE To estimate the prevalence of the neurometabolites associated with cognitive impairment in antiretroviral therapy (ART) naïve patients with HIV. METHODS We conducted a cross-sectional study among ART naïve patients with HIV aged 18-50 years in a tertiary care center in India. Cognition was tested using the Post Graduate Institute battery of brain dysfunction across five domains; memory, attention-information processing, abstraction executive, complex perceptual, and simple motor skills. We assessed the total N-acetyl aspartyl (tNAA), creatine (tCr) and glutamate + glutamine (Glx) using 3T magnetic resonance spectroscopy. Cognitive impairment was defined as an impairment in ≥2 domains. RESULTS Among 43 patients eligible for this study, the median age was 32 years (IQR 29, 40) and 30% were women. Median CD4 count and viral load were 317 cells/μL (IQR 157, 456) and 9.3 copies/ μL (IQR 1.4, 38), respectively. Impairment in at least one cognitive domain was present in 32 patients (74.4%). Impairment in simple motor skills and memory was present in 46.5% and 44% of patients, respectively. Cognitive impairment, defined by impairment in ≥2 domains, was found in 22 (51.2%) patients. There was a trend towards higher concentration of tNAA (7.3 vs. 7.0 mmol/kg), tGlx (9.1 vs. 8.2 mmol/kg), and tCr (5.5 vs. 5.2 mmol/kg) in the frontal lobe of patients with cognitive impairment vs. without cognitive impairment but it did not reach statistical significance (p>0.05 for all). There was no difference in the concentration of these metabolites in the two groups in the basal ganglia. CONCLUSION There is a high prevalence of cognitive impairment in ART naïve patients with HIV. There is no difference in metabolites in patients with or without cognitive impairment. Further studies, with longitudinal follow-up are required to understand the underlying pathophysiological mechanisms.
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Kumar N, Madan R, Gupta K, Chatterjee D, Uppal DK, Goyal S, Ballari N, Khosla D, Sahoo SK, Ahuja CK. Embryonal tumors with multilayered rosettes: A tertiary care centre experience. Clin Neurol Neurosurg 2021; 202:106508. [PMID: 33556852 DOI: 10.1016/j.clineuro.2021.106508] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 01/15/2021] [Accepted: 01/16/2021] [Indexed: 11/15/2022]
Abstract
BACKGROUND Embryonal tumors with multilayered rosettes (ETMR) is an extremely rare and highly aggressive tumor. It includes three distinct entities i.e, embryonal tumor with abundant neuropil and true rosettes (ETANTR), ependymoblastoma (EBL) and medulloepithelioma (MEPL). Here, we present our institutional experience of seven ETMR cases treated over a period of five years. MATERIALS AND METHODS Patients' records from 2015 to 2019 were reviewed manually and electronically to retrieve the data. Clinicopathological and outcome details of ETMR cases were entered in a predesigned proforma. RESULTS A total of seven cases of ETMR were registered from 2015 to 2019 with a median age at presentation of four years (range 3-7 years). All patients underwent surgery. However, only three patients completed the planned adjuvant treatment, comprising of focal radiotherapy (RT) alone, craniospinal irradiation (CSI) alone and CSI followed by six cycles of chemotherapy in one patient each respectively. Two patients commenced CSI but deteriorated during RT and thereafter needed best supportive care. Two patients could not be started on any adjuvant treatment. Unfortunately, six patients succumbed to their disease within one year of their diagnosis. Only one patient who received both CSI and adjuvant chemotherapy is alive at 15 months of diagnosis. CONCLUSION ETMR is a rare and aggressive entity. Majority of the patients die within one year of the diagnosis despite multimodality treatment.
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MESH Headings
- Brain Neoplasms/diagnostic imaging
- Brain Neoplasms/mortality
- Brain Neoplasms/pathology
- Brain Neoplasms/therapy
- Chemoradiotherapy, Adjuvant
- Child
- Child, Preschool
- Female
- Humans
- Male
- Neoplasms, Germ Cell and Embryonal/diagnostic imaging
- Neoplasms, Germ Cell and Embryonal/mortality
- Neoplasms, Germ Cell and Embryonal/pathology
- Neoplasms, Germ Cell and Embryonal/therapy
- Neuroectodermal Tumors, Primitive/diagnostic imaging
- Neuroectodermal Tumors, Primitive/mortality
- Neuroectodermal Tumors, Primitive/pathology
- Neuroectodermal Tumors, Primitive/therapy
- Neurosurgical Procedures
- Radiotherapy, Adjuvant
- Tertiary Care Centers
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Ashwath R, Rauthan A, Patil P, Gupta K. 416P A single institute study evaluating the additional benefit of blood NGS testing over conventional molecular testing in metastatic adenocarcinoma lung. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.10.410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Singh K, Gupta K, Tyagi V, Rajkumar S. Plant genetic resources in India: management and utilization. Vavilovskii Zhurnal Genet Selektsii 2020; 24:306-314. [PMID: 33659813 PMCID: PMC7907825 DOI: 10.18699/vj20.622] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Plant genetic resources (PGR) are the foundation of agriculture as well as food and nutritional security.
The ICAR-NBPGR is the nodal institution at national level for management of PGR in India under the umbrella
of Indian Council of Agricultural Research (ICAR), New Delhi. India being one of the gene-rich countries faces a
unique challenge of protecting its natural heritage while evolving mutually beneficial strategies for germplasm
exchange with other countries. The Bureaus activities include PGR exploration, collection, exchange, characterization,
evaluation, conservation and documentation. It also has the responsibility to carry out quarantine of
all imported PGR including transgenics meant for research purposes. The multifarious activities are carried out
from ICAR-NBPGR headquarters and its 10 regional stations located in different agro-climatic zones of India. It
has linkages with international organizations of the Consultative Group on International Agricultural Research
(CGIAR) and national crop-based institutes to accomplish its mandated activities. NBPGR collects and acquires
germplasm from various sources, conserves it in the Genebank, characterizes and evaluates it for different traits
and provides ready material for breeders to develop varieties for farmers. ICAR-NBPGR encompasses the National
Genebank Network and at present, the National Genebank conserves more than 0.40 million accessions. NBPGR
works in service-mode for effective utilization of PGR in crop improvement programmes which depends mainly
on its systematic characterization and evaluation, and identification of potentially useful germplasm. NBPGR is
responsible for identifying trait-specific pre-adapted climate resilient genotypes, promising material with disease
resistance and quality traits which the breeders use for various crop improvement programmes. The system has
contributed immensely towards safeguarding the indigenous and introducing useful exotic PGR for enhancing
the agricultural production. Presently, our focus is on characterization of ex situ conserved germplasm and
detailed evaluation of prioritized crops for enhanced utilization; assessment of impact of on-farm conservation
practices on genetic diversity; genome-wide association mapping for identification of novel genes and alleles for
enhanced utilization of PGR; identification and deployment of germplasm/landraces using climate analog data;
validation of trait-specific introduced germplasm for enhanced utilization.
Key words: plant genetic resources; gene banks; wild relatives; biotic and abiotic stresses; marker-assisted
selection.
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Madan R, Kumar N, Gupta A, Gupta K, Salunke P, Khosla D, Yadav BS, Kapoor R. Effect of prophylactic granulocyte-colony stimulating factor (G-CSF) on acute hematological toxicity in medulloblastoma patients during craniospinal irradiation (CSI). Clin Neurol Neurosurg 2020; 196:105975. [PMID: 32505868 DOI: 10.1016/j.clineuro.2020.105975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 02/24/2020] [Accepted: 05/26/2020] [Indexed: 11/28/2022]
Abstract
OBJECTIVES Haematological toxicity and treatment breaks are common during cranio-spinal irradiation (CSI) due to irradiation of large volume of bone marrow. We conducted this study to see the effect of prophylactic granulocyte colony stimulating factor (GCSF) in reducing treatment breaks. PATIENTS AND METHODS The study was conducted over a period of 15 months from August 2017 to November 2018. Histopathologically proven Medulloblastoma patients received prophylactic GCSF during CSI. Acute hematological toxicities and treatment breaks were noted and effect of age and pretreatment blood counts were analyzed by SPSS (Statistical Package for Social Sciences) version 23. RESULTS A total of 28 patients were included in the study. During CSI, hematological toxicity leading to treatment breaks was observed in 11 (39.3 %) patients, of which grade 3 and 2 toxicities were seen in ten and one patients respectively. Younger age (<10 years) at diagnosis was significantly associated with the development of hematological toxicity (p = 0.028, Chi-Square). No correlation was found with pre-treatment blood counts. CONCLUSION Prophylactic use of GCSF may be effective in preventing radiation induced hematological toxicity and treatment breaks.
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Chattopadhyay A, Mittal S, Gupta K, Dhir V, Jain S. Intestinal leishmaniasis. Clin Microbiol Infect 2020; 26:1345-1346. [PMID: 32439594 DOI: 10.1016/j.cmi.2020.05.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 04/27/2020] [Accepted: 05/03/2020] [Indexed: 10/24/2022]
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Gupta K, Girimaji N, Ramachandran R, Rathi M, Rakha A, Sharma A, Duseja R. SAT-402 STUDY OF T-REGULATORY CELLS AND B-REGULATORY CELLS IN LUPUS NEPHRITIS: A PROSPECTIVE CONTROLLED STUDY. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Dube A, Gupta J, Jindal K, Sharma A, Gupta K, Vijay M, Upadhyay R. Application of variational mode decomposition in automated migraine disease diagnosis. INTERNATIONAL JOURNAL OF HEALTHCARE TECHNOLOGY AND MANAGEMENT 2020. [DOI: 10.1504/ijhtm.2020.10039893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Jindal K, Upadhyay R, Vijay M, Sharma A, Gupta K, Gupta J, Dube A. Application of variational mode decomposition in automated migraine disease diagnosis. INTERNATIONAL JOURNAL OF HEALTHCARE TECHNOLOGY AND MANAGEMENT 2020. [DOI: 10.1504/ijhtm.2020.116763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Varadan M, Chopra A, Sanghavi A, Sivaraman K, Gupta K. Etiology and clinical recommendations to manage the complications following lingual frenectomy: A critical review. JOURNAL OF STOMATOLOGY, ORAL AND MAXILLOFACIAL SURGERY 2019; 120:549-553. [DOI: 10.1016/j.jormas.2019.06.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 05/07/2019] [Accepted: 06/18/2019] [Indexed: 11/25/2022]
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Murthy N, Rauthan A, Patil P, Somashekhar S, Zaveri S, Lahkar K, Gupta K, Nigade G, Sood T, Kulkarni S. Neutrophil-lymphocyte ratio as a prognostic marker in a resource constraint setting for metastatic malignancies treated with immune checkpoint inhibitors. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz447.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Gupta K, Mandlik D, Patel K. Oncological outcome following 3 Drug NACT for Bucco-Alveolar carcinoma with Supra-notch ITF extension. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz428.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Joharatnam-Hogan N, Cafferty F, Hubner R, Swinson D, Sothi S, Gupta K, Falk S, Patel K, Warner N, Kunene V, Rowley S, Khabra K, Underwood T, Jankowski J, Bridgewater J, Crossley A, Henson V, Berkman L, Gilbert D, Kynaston H, Ring A, Cameron D, Din F, Graham J, Iveson T, Adams R, Thomas A, Wilson R, Pramesh CS, Langley R. Aspirin as an adjuvant treatment for cancer: feasibility results from the Add-Aspirin randomised trial. Lancet Gastroenterol Hepatol 2019; 4:854-862. [PMID: 31477558 DOI: 10.1016/s2468-1253(19)30289-4] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 07/16/2019] [Accepted: 08/01/2019] [Indexed: 01/01/2023]
Abstract
BACKGROUND Preclinical, epidemiological, and randomised data indicate that aspirin might prevent tumour development and metastasis, leading to reduced cancer mortality, particularly for gastro-oesophageal and colorectal cancer. Randomised trials evaluating aspirin use after primary radical therapy are ongoing. We present the pre-planned feasibility analysis of the run-in phase of the Add-Aspirin trial to address concerns about toxicity, particularly bleeding after radical treatment for gastro-oesophageal cancer. METHODS The Add-Aspirin protocol includes four phase 3 randomised controlled trials evaluating the effect of daily aspirin on recurrence and survival after radical cancer therapy in four tumour cohorts: gastro-oesophageal, colorectal, breast, and prostate cancer. An open-label run-in phase (aspirin 100 mg daily for 8 weeks) precedes double-blind randomisation (for participants aged under 75 years, aspirin 300 mg, aspirin 100 mg, or matched placebo in a 1:1:1 ratio; for patients aged 75 years or older, aspirin 100 mg or matched placebo in a 2:1 ratio). A preplanned analysis of feasibility, including recruitment rate, adherence, and toxicity was performed. The trial is registered with the International Standard Randomised Controlled Trials Number registry (ISRCTN74358648) and remains open to recruitment. FINDINGS After 2 years of recruitment (October, 2015, to October, 2017), 3494 participants were registered (115 in the gastro-oesophageal cancer cohort, 950 in the colorectal cancer cohort, 1675 in the breast cancer cohort, and 754 in the prostate cancer cohort); 2719 (85%) of 3194 participants who had finished the run-in period proceeded to randomisation, with rates consistent across tumour cohorts. End of run-in data were available for 2253 patients; 2148 (95%) of the participants took six or seven tablets per week. 11 (0·5%) of the 2253 participants reported grade 3 toxicity during the run-in period, with no upper gastrointestinal bleeding (any grade) in the gastro-oesophageal cancer cohort. The most frequent grade 1-2 toxicity overall was dyspepsia (246 [11%] of 2253 participants). INTERPRETATION Aspirin is well-tolerated after radical cancer therapy. Toxicity has been low and there is no evidence of a difference in adherence, acceptance of randomisation, or toxicity between the different cancer cohorts. Trial recruitment continues to determine whether aspirin could offer a potential low cost and well tolerated therapy to improve cancer outcomes. FUNDING Cancer Research UK, The National Institute for Health Research Health Technology Assessment Programme, The MRC Clinical Trials Unit at UCL.
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Dong D, Gupta K, Weng P, Levinsohn J, Myung P. 887 Hair follicle dermal condensate cells originate from a selectively proliferative dermal progenitor population. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Sapi E, Gupta K, Wawrzeniak K, Gaur G, Torres J, Filush K, Melillo A, Zelger B. Borrelia and Chlamydia Can Form Mixed Biofilms in Infected Human Skin Tissues. Eur J Microbiol Immunol (Bp) 2019; 9:46-55. [PMID: 31223496 PMCID: PMC6563687 DOI: 10.1556/1886.2019.00003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 03/04/2019] [Indexed: 12/17/2022] Open
Abstract
Our research group has recently shown that Borrelia burgdorferi, the Lyme disease bacterium, is capable of forming biofilms in Borrelia-infected human skin lesions called Borrelia lymphocytoma (BL). Biofilm structures often contain multiple organisms in a symbiotic relationship, with the goal of providing shelter from environmental stressors such as antimicrobial agents. Because multiple co-infections are common in Lyme disease, the main questions of this study were whether BL tissues contained other pathogenic species and/or whether there is any co-existence with Borrelia biofilms. Recent reports suggested Chlamydia-like organisms in ticks and Borrelia-infected human skin tissues; therefore, Chlamydia-specific polymerase chain reaction (PCR) analyses were performed in Borrelia-positive BL tissues. Analyses of the sequence of the positive PCR bands revealed that Chlamydia spp. DNAs are indeed present in these tissues, and their sequences have the best identity match to Chlamydophila pneumoniae and Chlamydia trachomatis. Fluorescent immunohistochemical and in situ hybridization methods demonstrated the presence of Chlamydia antigen and DNA in 84% of Borrelia biofilms. Confocal microscopy revealed that Chlamydia locates in the center of Borrelia biofilms, and together, they form a well-organized mixed pathogenic structure. In summary, our study is the first to show Borrelia-Chlamydia mixed biofilms in infected human skin tissues, which raises the questions of whether these human pathogens have developed a symbiotic relationship for their mutual survival.
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Gupta K, Chaturvedi TP, Gupta J, Agrawal R. Cell proliferation proteins and aggressiveness of histological variants of ameloblastoma and keratocystic odontogenic tumor. Biotech Histochem 2019; 94:348-351. [DOI: 10.1080/10520295.2019.1571226] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Khanna S, Gan G, Gupta K, Khan W, Bhat A, Chen H, Tan T. Characterisation of Right Ventricular Size and Systolic Function in a Cohort of Myocarditis Patients with Normal LVEF. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Khanna S, Gan G, Gupta K, Khan W, Tan W, Chen H, Bhat A, Tan T. Characterisation of Left Ventricular Shape Change as Defined by Sphericity Index in Patients with Acute Phase Takotsubo Cardiomyopathy and Anterior STEMI Patients. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.250] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Basu D, Basu S, Reddy M, Gupta K, Chandy M. Clinical and laboratory profile of anti-M. Immunohematology 2019; 33:165-169. [PMID: 34841817 DOI: 10.21307/immunohematology-2019-024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Anti-M is a frequently detected naturally occurring antibody that has been reported in various clinical settings and also in voluntary donors. We describe here the clinical and laboratory findings of 11 cases with anti-M detected at our center. This report is a retrospective study in which we reviewed our immunohematology laboratory records for cases involving anti-M. Both donor and patient data from a 28-month period (September 2014 to December 2016) were reviewed. During this period, 11 examples of anti-M were detected (8 patients, 1 voluntary whole blood donor, and 1 hematopoietic stem cell donor. Anti-M was also detected in one external quality assessment scheme sample received during this period. In conclusion, anti-M can be detected in various clinical settings. This antibody can be clinically significant; in the laboratory, it can present as a serologic problem such as an ABO group discrepancy or an incompatible crossmatch. After detection, management and course of action is determined by both the antibody characteristics and the clinical setting. Anti-M is a frequently detected naturally occurring antibody that has been reported in various clinical settings and also in voluntary donors. We describe here the clinical and laboratory findings of 11 cases with anti-M detected at our center. This report is a retrospective study in which we reviewed our immunohematology laboratory records for cases involving anti-M. Both donor and patient data from a 28-month period (September 2014 to December 2016) were reviewed. During this period, 11 examples of anti-M were detected (8 patients, 1 voluntary whole blood donor, and 1 hematopoietic stem cell donor. Anti-M was also detected in one external quality assessment scheme sample received during this period. In conclusion, anti-M can be detected in various clinical settings. This antibody can be clinically significant; in the laboratory, it can present as a serologic problem such as an ABO group discrepancy or an incompatible crossmatch. After detection, management and course of action is determined by both the antibody characteristics and the clinical setting.
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Puri A, Modak SV, Gupta K. Global feedforward active noise control in vibro-acoustic cavities without increasing structural vibrations. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2018; 144:3391. [PMID: 30599654 DOI: 10.1121/1.5082297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 11/20/2018] [Indexed: 06/09/2023]
Abstract
Interior noise in vibro-acoustic cavities may be generated due to acoustic and structural disturbances. Earlier studies have shown that for global control, the maximum reduction in acoustic potential energy can be realised by using an optimum combination of acoustic and structural actuators. However, it is observed that this reduction in interior noise may also be accompanied with an increase in kinetic energy of the cavity structure. This paper presents the development of a feedforward technique for active noise control in vibro-acoustic cavities ensuring that the noise reduction does not lead to an increase in kinetic energy. The problem is formulated as a constrained minimisation problem to minimise the acoustic potential energy subject to a constraint that the kinetic energy does not increase. Through a numerical study, it is shown that the optimum solution of the above problem indeed is favourable in terms of reduction in acoustic potential energy in the cavity and kinetic energy of the structure. The paper further proposes a method for solution of this constrained minimisation problem using a penalty function method and solution of sequential unconstrained problems. The proposed method is validated through a numerical study on a car-like cavity for single- and multi-tonal noise.
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Kumar S, Gupta K, Murali T, Dharma K, Anand A, Bhandare M, Chaudhary V, Shrikhande S. Pattern of gastric cancer in young(GCY): A retrospective study from a tertiary cancer care centre in Indian subcontinent. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy432.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Gupta K, Dabas S. To evaluate oncological and quality of life outcomes between robotic and open neck dissection for oral cavity cancers: A prospective trial. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy438.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Gupta K, Parthiban S, Kumar S, Srinivas S, Vallathol D, Chanana R, Grewal G, Rathnasamy N, Goel A, Bajpai J. Outcomes of gemcitabine-docetaxel as second-line chemotherapy in patients of advanced soft tissue sarcoma: A retrospective analysis. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy443.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Kumar S, Thomas BS, Gupta K, Guddattu V, Alexander M. Iontophoresis and topical application of 8% arginine-calcium carbonate to treat dentinal hypersensitivity. Niger J Clin Pract 2018; 21:1029-1033. [PMID: 30074006 DOI: 10.4103/njcp.njcp_341_17] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Aim and objectives The aim and the objectives were. (1) to assess the efficacy of a desensitizing toothpaste containing 8.0% arginine-calcium carbonate (Colgate® Sensitive Pro-Relief™), (2) to assess the efficacy of a desensitizing toothpaste containing 8.0% arginine-calcium carbonate (Colgate® Sensitive Pro-Relief™) used in combination with iontophoresis, and (3) to compare the effectiveness of the above methods. Subjects and Methods Two groups of 40 patients each having dentinal hypersensitivity were treated using 8% proarginine and iontophoresis. The patients were recalled after 1, 2, and 4 weeks. The scores were tabulated and the results were analyzed using SPSS statistical software. Results Visual analog scale between the two groups showed a significant difference from the 1st week till the 4th week. ANOVA values showed the reduction in the dentinal hypersensitivity in Group 2 using the iontophoresis along with the 8.0% arginine-calcium carbonate toothpaste. The Cochran-Mantel-Haenszel correlation test of the Schiff's dentinal hypersensitivity cross-tabulation showed P < 0.001 which was statistically significant reduction after the 4th week following the application of 8.0% arginine-calcium carbonate along with iontophoresis. Conclusion Iontophoresis, when used along with Colgate® Sensitive Pro-Relief™ toothpaste, can provide additional benefit as this provides a better sealing effect.
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