1
|
Kurokawa K, Shukuya T, Greenstein RA, Kaplan BG, Wakelee H, Ross JS, Miura K, Furuta K, Kato S, Suh J, Sivakumar S, Sokol ES, Carbone DP, Takahashi K. Genomic characterization of thymic epithelial tumors in a real-world dataset. ESMO Open 2023; 8:101627. [PMID: 37703595 PMCID: PMC10594028 DOI: 10.1016/j.esmoop.2023.101627] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 05/25/2023] [Accepted: 08/02/2023] [Indexed: 09/15/2023] Open
Abstract
BACKGROUND Thymic epithelial tumors (TETs) are rare neoplasms arising in the mediastinum, including thymic carcinomas and thymomas. Due to their rarity, little is known about the genomic profiles of TETs. Herein, we investigated the genomic characteristics of TETs evaluated in a large comprehensive genomic profiling database in a real-world setting. METHODS We included data from two different cohorts: Foundation Medicine Inc. (FMI) in the United States and the Center for Cancer Genomics and Advanced Therapeutics (C-CAT) in Japan. Samples profiled were examined for all classes of alterations in 253 genes targeted across all assays. Tumor mutational burden (TMB) and microsatellite instability (MSI) were also evaluated. RESULTS A total of 794 patients were collected in our study, including 722 cases from FMI and 72 cases from C-CAT. In the FMI data, CDKN2A (39.9%), TP53 (30.2%) and CDKN2B (24.6%) were frequently altered in thymic carcinoma, versus TP53 (7.8%), DNMT3A (6.8%), and CDKN2A (5.8%) in thymoma. TMB-high (≥10 mutations/Mb) and MSI were present in 7.0% and 2.3% of thymic carcinomas, and 1.6% and 0.3% of thymomas, respectively. Within C-CAT data, CDKN2A (38.5%), TP53 (36.5%) and CDKN2B (30.8%) were also frequently altered in thymic carcinoma, while alterations of TSC1, SETD2 and LTK (20.0% each) were found in thymoma. CONCLUSIONS To the best of our knowledge, this is the largest cohort in which genomic alterations, TMB and MSI status of TETs were investigated. Potential targets for treatment previously unbeknownst in TETs are identified in this study, entailing newfound opportunities to advance therapeutic development.
Collapse
Affiliation(s)
- K Kurokawa
- Department of Respiratory Medicine, Juntendo University Faculty of Medicine and Graduate School of Medicine, Tokyo, Japan
| | - T Shukuya
- Department of Respiratory Medicine, Juntendo University Faculty of Medicine and Graduate School of Medicine, Tokyo, Japan.
| | | | - B G Kaplan
- Foundation Medicine, Inc., Cambridge, USA
| | - H Wakelee
- Department of Medicine, Division of Oncology, Stanford University, Stanford, USA
| | - J S Ross
- Foundation Medicine, Inc., Cambridge, USA; Departments of Pathology and Urology, Upstate Medical University, Syracuse, USA
| | - K Miura
- Department of Respiratory Medicine, Juntendo University Faculty of Medicine and Graduate School of Medicine, Tokyo, Japan
| | - K Furuta
- Chugai Pharmaceutical Co., Ltd., Tokyo, Japan
| | - S Kato
- Department of Medical Oncology, Juntendo University Faculty of Medicine and Graduate School of Medicine, Tokyo, Japan
| | - J Suh
- Genentech, South San Francisco, USA
| | | | - E S Sokol
- Foundation Medicine, Inc., Cambridge, USA
| | - D P Carbone
- Comprehensive Cancer Center, Division of Medical Oncology, The Ohio State University, Columbus, USA
| | - K Takahashi
- Department of Respiratory Medicine, Juntendo University Faculty of Medicine and Graduate School of Medicine, Tokyo, Japan
| |
Collapse
|
2
|
Rajendran P, Padmapriyadarsini C, Nair S, Sivakumar S. Newer TB diagnostics: An update. Indian J Tuberc 2023; 70:372-375. [PMID: 37562916 DOI: 10.1016/j.ijtb.2023.04.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Revised: 04/06/2023] [Accepted: 04/20/2023] [Indexed: 08/12/2023]
Abstract
In recent years, nucleic-acid amplification tests (NAATs), which are highly specific and sensitive, have helped to transform the TB diagnostic landscape. According to the WHO 2021 Guidelines on Diagnostics, the NAATs used in TB diagnosis at the point of care (POC) include Xpert MTB/RIF a cartridge-based test manufactured by Cepheid, and Truenat a chip-based test manufactured by Molbio. Other POC tests that are expected to be implemented in near future include Xpert Omni and Xpert MTB/XDR. The use of line probe assay is involved at the level of reference labs for the detection of MTB and its resistance to first-line (Isoniazid and Rifampicin) and second-line (fluoroquinolones and second-line injectables) drugs. When the currently available NAATs detect mutations for drug resistance at a particular region of MTB sequence, the Whole genome sequencing (WGS) platform demonstrates the exceptional potential for reliable and comprehensive resistance prediction for MTB isolates, by multiple gene regions or whole genome sequence analysis allowing for accurate clinical decisions.
Collapse
Affiliation(s)
- Priya Rajendran
- ICMR-National Institute for Research in Tuberculosis, Chetpet, Chennai, India
| | - C Padmapriyadarsini
- ICMR-National Institute for Research in Tuberculosis, Chetpet, Chennai, India.
| | | | - S Sivakumar
- ICMR-National Institute for Research in Tuberculosis, Chetpet, Chennai, India
| |
Collapse
|
3
|
Malathy A, Manikandan V, Devanesan S, Farhat K, Priyadharsan A, Ragavendran C, Ragupathy S, Ranjith R, Sivakumar S. Development of biohybrid Ag 2CrO 4/rGO based nanocomposites with stable flotation properties as enhanced Photocatalyst for sewage treatment and antibiotic-conjugated for antibacterial evaluation. Int J Biol Macromol 2023:125303. [PMID: 37311516 DOI: 10.1016/j.ijbiomac.2023.125303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 05/25/2023] [Accepted: 05/29/2023] [Indexed: 06/15/2023]
Abstract
The proposed research outlines a facile method to synthesize Silver Chromate/reduced graphene oxide nanocomposites (Ag2CrO4/rGO NCs) with a narrow dissemination size for the ecological treatment of hazardous organic dyes. The photodegradation performance toward the decontamination of model artificial methylene blue dye was assessed under solar light irradiation. The crystallinity, particle size, recombination of photogenerated charge carriers, energy gap and surface morphologies of synthesized nanocomposites were determined. The experiment objective is to use rGO nanocomposites to increase Ag2CrO4 photocatalytic efficiency in the solar spectrum. Tauc plots of ultraviolet-visible (UV-vis) spectrum were used to calculate the optical bandgap energy of the produced nanocomposites ~1.52 eV, which resulted in a good photodegradation percentage of ~92 % after 60 min irradiation of Solar light. At the same time, pure Ag2CrO4 and rGO nanomaterials showed ~46 % and ~ 30 %, respectively. The ideal circumstances were discovered by investigating the effects of several parameters, including catalyst loading and different pH levels, on the degradation of dyes. However, the final composites maintain their ability to degrade for up to five cycles. According to the investigations, Ag2CrO4/rGO NCs are an effective photocatalyst and can be used as the ideal material to prevent water pollution. Furthermore, antibacterial efficacy for the hydrothermally synthesized nanocomposite was tested against gram-positive (+ve) bacteria viz. Staphylococcus aureus and gram-negative (-ve) bacteria viz. Escherichia coli. The maximum zone of inhibition for S. aureus and E. coli were 18.5 and 17 mm, respectively.
Collapse
Affiliation(s)
- A Malathy
- Department of Chemistry, E.R.K Arts and Science College, Erumiyampatti, Dharmapuri, Tamilnadu 636 905, India
| | - Velu Manikandan
- Department of Food Science and Technology, Seoul Women's University, 621 Hwarangno, Nowon-gu, Seoul, South Korea
| | - Sandhanasamy Devanesan
- Department of Physics and Astronomy, College of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Karim Farhat
- Department of Urology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - A Priyadharsan
- Department of Cariology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, Tamilnadu 600 077, India.
| | - C Ragavendran
- Department of Cariology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, Tamilnadu 600 077, India
| | - S Ragupathy
- Department of Physics, E.R.K Arts and Science College, Erumiyampatti, Dharmapuri, Tamilnadu 636 905, India
| | - R Ranjith
- Department of Physics, KSR College of Engineering, Thiruchengode 637 215, Tamilnadu, India
| | - S Sivakumar
- Department of Chemistry, E.R.K Arts and Science College, Erumiyampatti, Dharmapuri, Tamilnadu 636 905, India.
| |
Collapse
|
4
|
Jothi S, Anita S, Sivakumar S. Modified Exigent Features Block in JAN Net for Analysing SPECT Scan Images to Diagnose Early-Stage Parkinson's Disease. Curr Med Imaging 2023:CMIR-EPUB-132279. [PMID: 37282573 DOI: 10.2174/1573405620666230605092654] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 11/27/2022] [Accepted: 12/29/2022] [Indexed: 06/08/2023]
Abstract
BACKGROUND The quantitative measure of dopamine transporter (DaT) in the human midbrain is generally used as a biomarker for analyzing Parkinson's disease (PD). INTRODUCTION DaT scan images or Single- photon emission computed tomography (SPECT) images are utilized to capture the dopamine content more accurately. METHODS Only sixteen slices out of ninety-one of SPECT images were chosen on the basis of the high amount of dopamine content and were named Volume rendering image slices (VRIS). This paper proposes a novel Convolutional Neural Network (CNN) called JAN Net which particularly treats the VRIS for identifying PD. The JAN Net preserves the edges and spatial features of the striatum by using a modified exigent feature (M-ExFeat) block, that contains convolutional and additive layer. The different-sized convolutional layer extracts both low- and high-level features of Striatum. The additive layer adds up all the features of different filter sized convolutional layers like 1x1, 3x3, and 5x5. The added output features are used to improve the learnability of neurons in the hidden layer. The network performance is tested for stride 1 and stride 2. RESULTS The results are validated using the dataset taken from the Parkinson's Progression Markers Initiative (PPMI) database. The JAN Net ensures improved performance in terms of accuracy. The training and validation accuracy for stride 2 is 100% with minimum losses. The outcome has been compared with different deep learning architectures and the machine learning techniques like Extreme Learning Machines (ELM), and Artificial Neural Networks (ANN) to highlight the efficacy of the proposed architecture. CONCLUSION Hence, the present work could be of great aid to the experts in neurology to protect the neurons from impairment.
Collapse
Affiliation(s)
- S Jothi
- Department of Computer Science, Jayaraj Annapackiam College for Women, M. K. University, Madurai, Tamilnadu, India
| | - S Anita
- Department of Electronics and Communication Engineering, St. Anne's College of Engineering and Technology, Anna University, Chennai, Tamilnadu, India
| | - S Sivakumar
- Department of Computer Science, Cardamom Planters' Association College, M. K. University, Madurai, Tamilnadu, India
| |
Collapse
|
5
|
Sivakumar S, Kamalakannan M, Kalpana AP, Prakash J, Arun B. Effect of Mulligan’s Mobilization Versus Muscle Energy Technique on Sacroiliac Joint Dysfunction. Int J Life Sci Pharm Res 2023. [DOI: 10.22376/ijlpr.2023.13.3.l167-l176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/28/2023]
Abstract
Sacroiliac joint dysfunction (SIJDF) is about 15% to 30% identified in a patient with low back aches. This Study aimed to determine the effect of mulligan mobilization versus muscle energy technique on sacroiliac joint dysfunction. The study was a randomized controlled trial that involved 66 participants with SIJDF, after a thorough evaluation the participants were divided into three groups. In experimental group I (Mulligan's mobilization group (MMG)), participants underwent Mulligan mobilization for 20 minutes. The experimental group II (Muscle energy group (MEG)) participants underwent the muscle energy technique for 20 minutes, and the third group underwent moist heat therapy (moist heat group (MHG)) for 20 minutes. For all three groups, 10 minutes of exercise were taught to the patients. All the participants of the groups were included based on pre-determined selection criteria, and all were willing to participate in the Study. The outcome measures of Pain, functional disability, and kinesiophobia were measured by the Numerical pain scale, Oswestry disability index, and Tampa scale respectively. The result was computed using One-way ANOVA, showing significant differences between the three groups. When significant differences were obtained on ANOVA, further analysis was done using a post hoc test. The values for the outcomes are Pain was compared with MMG vs. MEG is 8.045 and the MMG vs. MHG is 4.022 and MMG vs. MEG is 12.07, on Oswestry disability index MEG vs. MHG 9.85, MMG vs. MHG is 2.23 and MMG vs. MEG is 12.08. For kinesiophobia, MMG vs. MEG is 20.25, MMG vs. MHG is 15.35, and MMG vs. MEG is 35.60. This Study concludes that Mulligan's mobilization is more effective in reducing pain, improving function, and kinesiophobia in SI joint dysfunction than the other two groups.
Collapse
|
6
|
Sivakumar S, Thangadurai TD, Nataraj D. Role of Interfacial AuNPs in Solid-state Direct Z-scheme MoS2/Au/g-C3N4 Heterojunction Nanocomposite’s Pollutant Degradation activity under sunlight. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.131365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
|
7
|
Kumar S, Chawla R, Sivakumar S, Khatkar SK, Kumar N, Goel N. Comparative study illustrating the efficacy of novel ultrasonication assisted heat treatment over conventional heat treatment in functional smoothie. Int J Food Sci Technol 2023. [DOI: 10.1111/ijfs.16363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Affiliation(s)
- Shubham Kumar
- Department of Dairy Technology College of Dairy Science and Technology GADVASU
| | - Rekha Chawla
- Department of Dairy Technology College of Dairy Science and Technology GADVASU
| | - S. Sivakumar
- Department of Dairy Technology College of Dairy Science and Technology GADVASU
| | - Sunil Kumar Khatkar
- Department of Dairy Technology College of Dairy Science and Technology GADVASU
| | - Narender Kumar
- Department of Dairy Engineering College of Dairy Science and Technology GADVASU
| | - Nitika Goel
- Department of Dairy Technology College of Dairy Science and Technology GADVASU
| |
Collapse
|
8
|
Gopinathan A, Sivakumar S, Aneeja T. Recent advances and prospects in palladium catalyzed Hiyama coupling reaction. ARKIVOC 2023. [DOI: 10.24820/ark.5550190.p011.845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
|
9
|
Sivakumar S, Daniel Thangadurai T, Manjubaashini N, Nataraj D. Two-dimensional z-type MoS2/g-C3N4 semiconductor heterojunction nanocomposites for industrial methylene blue dye degradation under daylight. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
10
|
Sivakumar S, Nelson Prabu L. Enhancement in electrochemical behavior of cobalt doped α-MnO nanoparticles. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
11
|
Gorantla A, Alsaiqali M, Sivakumar S, Francois J, Freytes-Santiago L, Jallad A, Budzikowski A. Effectiveness of various radiofrequency ablation catheters in the treatment of typical atrial flutter. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Although ablation of typical atrial flutter (AFL) can be easily achieved with radiofrequency energy (RF), there are no studies that compare effectiveness of different ablation catheters. Our study aimed to compare the effectiveness of various types of ablation catheters in the treatment of AFL.
Methods
We analysed patients with AFL who underwent RF ablation by a single operator at our institution. Successful ablation was evidenced by presence of bidirectional conduction block (trans-isthmus conduction time ≥130 ms, or doubling of baseline conduction time, or presence of double potentials ≥90ms). Logistic regression was used to compare success rate and linear regression to compare lesion time.
Results
Out of the 222 patients, only 6 patients did not meet success criteria (2.7%). Catheters used were 8 mm tip in 16 patients, internally irrigated (Chili II Boston Scientific) in 47 patients, externally irrigated (non-force sensing) catheters (CoolPath, Abbott) in 40 patients. Externally irrigated force sensing catheter (Tacticath, Abbott) was used with >10 gm of force and (LPLD) setting (30W-45°C-60 sec) in 50 patients, and high-power short duration (HPSD) setting (50W-43°C −12 sec,) in 70 patients. No complications were encountered. Catheter type had no statistically significant association with ablation success. In terms of lesion time, HPSD catheter statistically significantly shortened lesion time by 758.3s, [CI −1128.29, −388.35s] followed by LPLD by 419.0s [CI −808.49, −29.47s]. Table 1 shows the lesion time difference for the catheters used as compared with 8 mm tip.
Conclusions
Typical atrial flutter radiofrequency ablation procedure had a high success rate, not influenced by type of ablation catheter. Contact force ablation catheter on HPSD is associated with shorter total lesion time.
Funding Acknowledgement
Type of funding sources: None.
Collapse
Affiliation(s)
- A Gorantla
- Suny Downstate Medical Center , Brooklyn , United States of America
| | - M Alsaiqali
- Suny Downstate Medical Center , Brooklyn , United States of America
| | - S Sivakumar
- Suny Downstate Medical Center , Brooklyn , United States of America
| | - J Francois
- Suny Downstate Medical Center , Brooklyn , United States of America
| | | | - A Jallad
- Suny Downstate Medical Center , Brooklyn , United States of America
| | - A Budzikowski
- Suny Downstate Medical Center , Brooklyn , United States of America
| |
Collapse
|
12
|
Sivakumar S, Kalaimani N. An optimization of supplements and physical factors for growth of hemocytes culture from Penaeus vannamei (White shrimp) in selective medium. Mol Biol Rep 2022; 49:9489-9497. [PMID: 36006504 DOI: 10.1007/s11033-022-07834-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 07/29/2022] [Indexed: 11/25/2022]
Abstract
BACKGROUND Standardization of cell culture medium plays a vital role in the development of primary or continuous cell line. Apart from the basal media, supplements in the medium and various physical factors promote the cell growth. With this context, the study was carried out to optimize the culture medium using various supplements and physical factors for the growth of hemocytes culture from Penaeus vannamei. METHODS Various concentrations of Fetal Bovine Serum (FBS; 1-25%), Shrimp Muscle Extract (SME; 1-25%) and basic Fibroblast Growth Factor (bFGF; 0.5-5 ng mL -1) were attempted to optimize the cell culture media for the development of primary hemocytes culture of P. vannamei. Various pH, temperature and osmolality was also screened to optimize the medium. RESULTS 15% FBS was ideal for the healthy morphology of cells with rapid replication. SME supplementation at 5-20% supported the cell growth for 24 h but only 30% of cell viability was observed after 48 h. bFGF (0.5-5 ng mL-1) enhanced cell growth in the medium with 15% FBS; The ideal pH level was examined by preparing the HBSCM-5 medium at pH between 6.8-8.0. Osmolality of 730 ± 20, pH of 7.2 and temperature of 28 °C resulted in the healthy cells with good morphology. NSW supplement supported the cell growth at low concentrations of salt; however, more than 2% salt concentrations cells did not form fibroblast-like morphology and instead a crystal-like morphology was observed. CONCLUSION The hemocytes culture were optimized for use as an in vitro cell culture system by testing cell growth on HBSCM-5 medium with various supplements, growth factors and physical parameters.
Collapse
Affiliation(s)
- S Sivakumar
- Aquatic Animal Health and Environment Division, ICAR-Central Institute of Brackishwater Aquaculture, #75, Santhome High Road, Raja Annamalaipuram, Chennai, Tamil Nadu, 600028, India.
| | - N Kalaimani
- Aquatic Animal Health and Environment Division, ICAR-Central Institute of Brackishwater Aquaculture, #75, Santhome High Road, Raja Annamalaipuram, Chennai, Tamil Nadu, 600028, India
| |
Collapse
|
13
|
Mala NA, Dar MA, Rather MUD, Sivakumar S, Husain S, Batoo KM. Enhanced electrochemical properties of zinc and manganese co-doped NiO nanostructures for its high-performance supercapacitor applications. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109661] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
14
|
Sivakumar S, Macarulla T, Grell P, Chee C, Krishnamurthy A, Ka Wong M, Michael M, Milella M, Prager G, Springfeld C, Collignon J, Siveke J, Santoro A, Lin C, Peltola K, Bostel G, Jankovic D, Altzerinakou M, Fabre C, Bai L. P-5 Phase II study (daNIS-1) of the anti-TGF-β monoclonal antibody (mAb) NIS793 +/- spartalizumab in combination with nab-paclitaxel/gemcitabine (NG) versus NG alone in patients with first-line metastatic pancreatic ductal adenocarcinoma (mPDAC). Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.04.097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
|
15
|
Mohanavel V, Ravichandran M, Ashraff Ali KS, Sathish T, Karthick A, Arungalai Vendan S, Velmurugan P, Salmen SH, Alfarraj S, Sivakumar S, Gebrekidan AM. Synthesis and Workability Behavior of Cu-X wt.% TiC ( x = 0, 4, 8, and 12) Powder Metallurgy Composites. Bioinorg Chem Appl 2022; 2022:8101680. [PMID: 35637640 PMCID: PMC9148246 DOI: 10.1155/2022/8101680] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 04/20/2022] [Indexed: 11/24/2022] Open
Abstract
In this work, copper (Cu) matrix composite reinforced with titanium carbide (TiC) was fabricated by powder metallurgy (PM) method with the varying TiC content from 0% to 12% by weight in the step of 4%. The required weight percentage of powders was milled in an indigenously developed ball milling setup. Green compacts were made using a computer-controlled hydraulic press (400 kN) and sintered in a muffle furnace at a temperature of 950°C. Scanning electron microscope (SEM) was used to analyze the distribution of TiC particles in Cu matrix in as-sintered conditions. X-ray diffraction (XRD) analysis resulted in the existence of respective phases in the produced composites. The structural characteristics such as stress, strain, dislocation density, and grain size of the milled composites were evaluated. Cold upsetting was conducted for the sintered composites at room temperature to evaluate the axial (σ z ), hoop (σ ө ), hydrostatic (σ m ), and effective (σ eff ) true stresses. These stresses were analyzed against true axial strain (ε z ). Results showed that the increase in the inclusion of weight percentage of TiC into the Cu matrix increases density, hardness, (σ z ), (σ ө ), (σ m ), (σ eff ), and stress ratio parameters such as (σ z /σ eff ), (σ θ /σ eff ), (σ m /σ eff ), and (σ z /σ θ ) of the composites.
Collapse
Affiliation(s)
- V. Mohanavel
- Centre for Materials Engineering and Regenerative Medicine, Bharath Institute of Higher Education and Research, Chennai, 600073 Tamil Nadu, India
- Department of Mechanical Engineering, Chandigarh University, Mohali 140413, Punjab, India
| | - M. Ravichandran
- Department of Mechanical Engineering, K. Ramakrishnan College of Engineering, Trichy-621112, Tamil Nadu, India
- Department of Mechanical Engineering and University Centre for Research & Development, Chandigarh University, Mohali 140413, Punjab, India
| | - K. S. Ashraff Ali
- Department of Mechanical Engineering, C. Abdul Hakeem College of Engineering and Technology, Vellore 632509, Tamil Nadu, India
| | - T. Sathish
- Department of Mechanical Engineering, Saveetha School of Engineering, SIMATS, Chennai 602 105, Tamil Nadu, India
| | - Alagar Karthick
- Department of Electrical and Electronics Engineering, KPR Institute of Engineering and Technology, Coimbatore 641407, Tamil Nadu, India
| | - S. Arungalai Vendan
- Department of Electronics and Communication, Dayananda Sagar University, Bengaluru, Karnataka, India
| | - Palanivel Velmurugan
- Centre for Materials Engineering and Regenerative Medicine, Bharath Institute of Higher Education and Research, Chennai, 600073 Tamil Nadu, India
| | - Saleh H. Salmen
- Department of Botany and Microbiology, College of Science, King Saud University, PO. Box 2455, Riyadh 11451, Saudi Arabia
| | - Saleh Alfarraj
- Zoology Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - S. Sivakumar
- Department of Bioenvironmental Energy, College of Natural Resources and Life Science, Pusan National University, Miryang-si 50463, Republic of Korea
| | - Atkilt Mulu Gebrekidan
- Department of Mechanical Engineering, Faculty of Mechanical Engineering, Arba Minch Institute of Technology (AMIT), Arba Minch University, Arba Minch, Ethiopia
| |
Collapse
|
16
|
Sivakumar S, Kathiresan K, Pandian P. Recent Approaches of Drugs and Vaccines Used in COVID 19: A Review. JPRI 2022. [DOI: 10.9734/jpri/2022/v34i22a35848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A novel SARS-CoV-2 coronavirus developed in December 2019, triggering a life-threatening pneumonia outbreak in China, and has since expanded worldwide, producing a pandemic. Because of the urgent need to control the disease and the dearth of specific and effective treatment options, FDA-approved medicines that have proven efficacy against comparable viruses are being used. In vitro, chloroquine, remdesivir, lopinavir/ritonavir or ribavirin are effective at inhibiting SARS-CoV-2. The preliminary findings of a variety of clinical trials utilising various chloroquine or hydroxychloroquine delivery procedures all indicate a positive outcome. They may not be effective in cases of consistently high viremia, and data on ivermectin (another antiparasitic medication) is currently unavailable. Intriguingly, azithromycin, a macrolide antibiotic, in conjunction with hydroxychloroquine may provide therapeutic benefits. Favipiravir, tocilizumab, and azithromycin types are among the other treatment options being investigated.
Collapse
|
17
|
Jainarayanan A, Mouroug Anand N, Arbe-Barnes E, Bashford-Rogers R, Abu-Shah E, Dustin M, Sivakumar S. 173P Pseudotime dynamics in pancreatic ductal adenocarcinoma reveal different mechanisms of hindrance in immunity through bifurcation of regulatory and cytotoxic T-cell differentiation. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.10.193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
|
18
|
Chawla R, Sivakumar S, Kaur H, Mishra SK. Effect of starch based edible antimicrobial films and modified atmospheric packaging (MAP) on extended life of composite sweetmeat. Carbohydrate Polymer Technologies and Applications 2021. [DOI: 10.1016/j.carpta.2021.100055] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
|
19
|
Sivakumar S, Mala NA, Batoo KM, Ijaz MF. Conserved crystal phase and morphology: Electrochemical supremacy of copper (Cu) and iron (Fe) dual-doped nickel oxide and its supercapacitor applications. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108959] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
20
|
Chawla R, Sivakumar S, Kaur H. Antimicrobial edible films in food packaging: Current scenario and recent nanotechnological advancements- a review. Carbohydrate Polymer Technologies and Applications 2021. [DOI: 10.1016/j.carpta.2020.100024] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
|
21
|
Mala NA, Sivakumar S, Batoo KM, Hadi M. Design and fabrication of iron-doped nickel oxide-based flexible electrode for high-performance energy storage applications. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108797] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
22
|
Divya G, Sivakumar S, Sakthi D, Priyadharsan A, Arun V, Kavitha R, Boobas S. Developing the NiO/CuTiO3/ZnO Ternary Semiconductor Heterojunction for Harnessing Photocatalytic Activity of Reactive Dye with Enhanced Durability. J Inorg Organomet Polym Mater 2021. [DOI: 10.1007/s10904-021-02068-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
23
|
Sivakumar S, Kamalakannan M, B A, Kalpana A, Prakash J, Vishnu Pradeep K. Prevalence of sacroiliac joint dysfunction in college students. Biomedicine (Taipei) 2021. [DOI: 10.51248/.v41i2.799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Introduction and Aim: Sacroiliac (SI) joint is considered as one of the pain generators in students. Sacroiliac joint dysfunction is one of the common sources of low back pain, and many times the SI joint dysfunction mis-lead as the lumbar problem. Students who sit for longer duration cause stress in the sacroiliac joint. So, this study intended to investigate the prevalence and the contributing risk factors amongst students’ population with work-related musculoskeletal problems and also to identify the percentage of SI joint involvement in them.Materials and Methods: The study was conducted with 590 students from a private paramedical college, involving full time college students, with age group of 17-27 years, no recent falls or those not on current medications related to any musculoskeletal problems, and students without any congenital problems. Evaluation was done using Nordic musculoskeletal questionnaire along with a self-developed demographic questionnaire. The involved students were assessed using questionnaire and sacroiliac joint tests to identify the SI Joint dysfunction. Provocation tests included i) Sacroiliac joint distraction test, ii) SI Compression test iii) Thigh thrust test iv) Faber’s test and v) Gaenslen’s Test. Inference considered was presence of pain in more than 3 test indicates Sacroiliac joint involvement. On completion of assessment, a thank you card was given to all the volunteer students participated in the study. The collected data was filled and analyzed.Results: The study results showed that students with lower back pain also had complaints of neck pain. It was also noted that about 30% of the individuals were positive to the sacroiliac joint tests, among them 93 participants complained of low back pain.Conclusion: This study concluded that 61% of individuals were suffering with musculoskeletal disorders in the selected population. Around 30% of the low back pain participants complained of sacroiliac joint dysfunctions.
Collapse
|
24
|
Santhosh Kumar S, Sivakumar S, Abdul Majeed S, Vimal S, Taju G, Sahul Hameed AS. In vitro propagation of infectious myonecrosis virus in C6/36 mosquito cell line. J Fish Dis 2021; 44:987-992. [PMID: 33631045 DOI: 10.1111/jfd.13359] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 02/10/2021] [Accepted: 02/11/2021] [Indexed: 06/12/2023]
Abstract
Infectious myonecrosis (IMN) is an important shrimp viral disease caused by infectious myonecrosis virus (IMNV). Based on previous reports, an attempt was made to propagate IMNV in apparently healthy C6/36 subclone of Aedes albopictus cell line. The confirmatory assays such as RT-PCR, real-time PCR and bioassay revealed that C6/36 cells were found to be susceptible to IMNV and these cells could be used easily for isolation and propagation of IMNV. The results of real-time PCR assay showed that a lower CT value of 22.25 in IMNV-infected cells was obtained on 10 day post-infection (d p.i.), whereas the higher CT value of 35.21 was obtained in IMNV-infected cells on 2 d p.i. There is no significant difference between CT values of IMNV production in vitro using C6/36 cell line and in vivo using shrimp. The IMNV propagated in C6/36 cells is capable of infecting shrimp and caused 100% mortality in shrimp. Clinical signs observed in shrimp injected with IMNV propagated in C6/36 cell line were found to be similar to naturally infected shrimp.
Collapse
Affiliation(s)
- S Santhosh Kumar
- Aquatic Animal Health Laboratory, C. Abdul Hakeem College, Ranipet, India
| | - S Sivakumar
- Aquatic Animal Health Laboratory, C. Abdul Hakeem College, Ranipet, India
| | - S Abdul Majeed
- Aquatic Animal Health Laboratory, C. Abdul Hakeem College, Ranipet, India
| | - S Vimal
- Aquatic Animal Health Laboratory, C. Abdul Hakeem College, Ranipet, India
| | - G Taju
- Aquatic Animal Health Laboratory, C. Abdul Hakeem College, Ranipet, India
| | - A S Sahul Hameed
- Aquatic Animal Health Laboratory, C. Abdul Hakeem College, Ranipet, India
| |
Collapse
|
25
|
Kaur M, Chawla R, Sivakumar S. Descriptive sensory profiling of thandai using principal component analysis. IJDS 2021. [DOI: 10.33785/ijds.2021.v74i02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
26
|
Rajni Swamy V, Krishnakumar R, Srinivasan N, Sivakumar S, Kumar RR. Coordinated compliance of chloro-methyl and bromo-methyl exchange rule in two dihydrofuran carbonitrile derivatives. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
27
|
Best J, Starkey T, Chatterjee A, Fackrell D, Pettit L, Srihari N, Tween H, Olsson-Brown A, Cheng V, Hughes DJ, Lee AJX, Purshouse K, Arnold R, Uk Coronavirus Cancer Monitoring Project Team, Sivakumar S, Cazier JB, Lee LYW. Coronavirus Disease 2019: the Pivotal Role of UK Clinical Oncology and the UK Coronavirus Cancer Monitoring Project. Clin Oncol (R Coll Radiol) 2021; 33:e50-e53. [PMID: 32593552 PMCID: PMC7274595 DOI: 10.1016/j.clon.2020.05.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 05/20/2020] [Accepted: 05/28/2020] [Indexed: 01/08/2023]
Affiliation(s)
- J Best
- Shrewsbury and Telford Hospital NHS Trust, Royal Shrewsbury Hospital, Shrewsbury, UK
| | - T Starkey
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, UK
| | - A Chatterjee
- Shrewsbury and Telford Hospital NHS Trust, Royal Shrewsbury Hospital, Shrewsbury, UK
| | - D Fackrell
- Queen Elizabeth Hospital, University Hospitals Birmingham, Birmingham, UK
| | - L Pettit
- Shrewsbury and Telford Hospital NHS Trust, Royal Shrewsbury Hospital, Shrewsbury, UK
| | - N Srihari
- Shrewsbury and Telford Hospital NHS Trust, Royal Shrewsbury Hospital, Shrewsbury, UK
| | - H Tween
- University Hospitals Coventry and Warwickshire, Coventry, UK
| | | | - V Cheng
- Leeds Cancer Centre, Bexley Wing, St James's University Hospital, Leeds, UK
| | - D J Hughes
- Department of Cancer Imaging, Division of Cancer Studies, Guy's Campus, King's College London, London, UK
| | - A J X Lee
- University College London, UCL Cancer Institute, London, UK
| | - K Purshouse
- Edinburgh Cancer Centre, Western General Hospital, Edinburgh, UK
| | - R Arnold
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, UK
| | | | - S Sivakumar
- Department of Oncology, University of Oxford, Oxford, UK
| | - J-B Cazier
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, UK; Centre for Computational Biology, University of Birmingham, Birmingham, UK
| | - L Y W Lee
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, UK.
| |
Collapse
|
28
|
Arish BT, Hariharasudhan B, Ranjan RV, Sivakumar S, george SK, Ravichandran K. Anaesthetic Efficacy of Nalbuphine as an Adjuvant to Ropivacaine in Ultrasound Guided Supraclavicular Brachial Plexus Blockade: ARandomised Controlled Trial. J Clin Diagn Res 2021. [DOI: 10.7860/jcdr/2021/47540.14577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Introduction: Ultrasonography (USG) guided supraclavicular block is an excellent choice for upper limb surgeries. It not only allows smaller volumes of local anaesthetic usage but also provides optimal tourniquet coverage. Ropivacaine is structurally related to bupivacaine with reduced potential for toxicity and improved sensory and motor blocking profiles. Nalbuphine acquired a significant place in pain control but its efficacy as a local anaesthetic adjuvant is yet to be proved in peripheral nerve blockades. Aim: To evaluate the efficacy of adding nalbuphine to ropivacaine in supraclavicular brachial plexus blockade and to assess the quality of block for patients undergoing ambulatory forearm and hand surgeries. Materials and Methods: Seventy American Society of Anesthesiologists (ASA) grade 1 and 2 patients were randomised into two groups of 35 each. Group A (n=35): received 24 mL of 0.5% of ropivacaine + 1 mL of nalbuphine (10 mg) and Group B (n=35): received 24 mL of 0.5% of ropivacaine + 1 mL of normal saline. The parameters observed were duration of analgesia, onset of sensory and motor blockade, duration of motor blockade and haemodynamic changes during the procedure. Categorical variables were analysed using the Pearson’s Chi‑square test. Continuous variables were analysed using the independent sample t‑test and p<0.05 was considered as statistically significant. Results: The onset of sensory and motor blockades were faster in the nalbuphine group compared to the control group (p<0.001). The duration of sensory and motor blockades was similarly longer in nalbuphine group (p<0.001). Also, the mean duration of analgesia was significantly longer with nalbuphine group (p<0.001). Conclusion: Nalbuphine significantly prolonged the duration of analgesia and duration of block while accelerating the onset of blockade thereby improving the overall quality of blockade.
Collapse
|
29
|
Hariharasudhan B, Savithasree S, Mane RS, Sivakumar S, Arish BT. Comparison of Levobupivacaine and Levobupivacaine with Dexmedetomidine for Supraclavicular Brachial Plexus Block in Patients Undergoing Upper Limb Surgeries-A Randomised Controlled Trial. J Clin Diagn Res 2021. [DOI: 10.7860/jcdr/2021/47344.14590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Introduction: Brachial plexus blockade at the supraclavicular level delivers an excellent regional anaesthetic technique with unmatched effectiveness for upper limb surgeries. Levobupivacaine, a safer alternative to the commonly used bupivacaine for regional anaesthesia and addition of α2-agonists like dexmedetomidine further improves the quality of regional anaesthesia. Aim: To evaluate the efficacy of levobupivacaine in combination with dexmedetomidine for supraclavicular brachial plexus block. Materials and Methods: This randomised controlled study enrolled 50 American Society of Anaesthesiologist (ASA) grade I and II patients aged between 18-60 years posted for elective upper limb surgeries. Randomisation was done and the patients were divided into two groups with 25 each, to receive either 39 mL of 0.5% levobupivacaine and 100 μgs (1 mL) of dexmedetomidine in group LD (Levobupivacaine with Dexmedetomidine) and 39 mL of 0.5% levobupivacaine and 1 mL of normal saline in group LS (Levobupivacaine with Saline). The onset and duration of sensory and motor blockade along with duration of analgesia were observed. All Quantitative data were compared and analysed using student’s unpaired t test while qualitative data were analysed using Chi-square test. A p-value of less than 0.05 was considered to be statistically significant. Results: The onset of sensory and motor blockade in group LD was significantly faster when compared to group LS (p<0.001). group LD had a longer mean duration of sensory and motor blockade along with duration of analgesia when compared to group LS (p<0.001). There was a better hemodynamic stability in group LD when compared to group LS. Conclusion: Dexmedetomidine added to levobupivacaine provides significantly shorter onset times, greatly prolongs the duration of sensory and motor blockade along with duration of analgesia without any systemic side effects.
Collapse
|
30
|
Olsson-Brown A, Hughes D, Purshouse K, Lee L, Cheng V, Lee A, Protheroe E, Smith A, Curley H, Arnold R, Cazier JB, D'Costa J, Palles C, Campton N, Varnai C, Sivakumar S, Kerr R, Middleton G. 1703P UK Coronavirus Cancer Monitoring Project (UKCCMP): A national reporting network for real time data of the COVID-19 pandemic. Ann Oncol 2020. [PMCID: PMC7506390 DOI: 10.1016/j.annonc.2020.08.1767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
|
31
|
Vasan N, Sivakumar S, Jin D, Ross J, Cantley L, Scaltriti M, Sokol E. 1954P A pan-cancer analysis of double PIK3CA mutations. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
32
|
Arulraj R, Sivakumar S, Suresh S, Anitha K. Synthesis, vibrational spectra, DFT calculations, Hirshfeld surface analysis and molecular docking study of 3-chloro-3-methyl-2,6-diphenylpiperidin-4-one. Spectrochim Acta A Mol Biomol Spectrosc 2020; 232:118166. [PMID: 32106033 DOI: 10.1016/j.saa.2020.118166] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 02/04/2020] [Accepted: 02/16/2020] [Indexed: 06/10/2023]
Abstract
A newly synthesized molecular complex 3-chloro-3-methyl-2,6-diphenylpiperidin-4-one [CMDP] crystallizes in the triclinic space group P1. The piperidin-4-one ring exhibits a distorted chair conformation with the puckering parameters Q = 0.559 (3) Å, θ = 173.3 (3°) and φ = 180 (2°). The methyl substituent on the third position of the piperidine ring takes up a syn-periplanar positioning although the chloro substituent takes up an anti-clinical positioning with dihedral angle: Cl1-C2-C1-O1 = 113.3 (2°) due to the repulsion from an adjacent oxygen atom. The optimized molecular geometry and fundamental vibrational frequencies of the CMDP compounds are interpreted with the help of normal coordinate force field calculations based on DFT method B3LYP/6-31+G (d,p) level basis set. The HOMO-LUMO energy gap of the molecule is 5.4194 eV. The hardness value (η) of the CMDP molecule is 2.7097 eV. Hirshfeld surface analysis and fingerprint plots are supportive for determining the molecular shape and visually analyzing the intermolecular interactions in the crystal structure. The Hirshfeld surfaces like di,de,dnorm, shape index and curvedness of C18H18NOCl were pictured and discussed. The various levels of electronic transitions have been predicted by Time-Dependent Density Functional Theory (TD-DFT) calculations and compared with the recorded absorption spectrum. Molecular docking study was performed and reported for the synthesized compound against 4ey7 protein.
Collapse
Affiliation(s)
- R Arulraj
- Department of Electrical and Computer Engineering, National University of Singapore, 117 583, Singapore.
| | - S Sivakumar
- Research and Development Centre, Bharathiar University, Coimbatore 641 046, Tamil Nadu, India; Department of Chemistry, Thiruvalluvar Arts and Science College, Kurinjipadi 607 302, Tamil Nadu, India
| | - S Suresh
- Department of Physics, Saveetha Engineering College (Autonomous), Thandalam, Chennai 602105, Tamil Nadu, India.
| | - K Anitha
- Research and Development Centre, Bharathiar University, Coimbatore 641 046, Tamil Nadu, India
| |
Collapse
|
33
|
Anitha K, Sivakumar S, Arulraj R, Rajkumar K, Kaur M, Jasinski JP. Synthesis, crystal structure, DFT calculations and Hirshfeld surface analysis of 3-butyl-2,6-bis-(4-fluoro-phen-yl)piperidin-4-one. Acta Crystallogr E Crystallogr Commun 2020; 76:651-655. [PMID: 32431926 PMCID: PMC7199252 DOI: 10.1107/s2056989020004636] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Accepted: 04/02/2020] [Indexed: 11/24/2022]
Abstract
The title compound, C21H23F2NO, consists of two fluoro-phenyl groups and one butyl group equatorially oriented on a piperidine ring, which adopts a chair conformation. The dihedral angle between the mean planes of the phenyl rings is 72.1 (1)°. In the crystal, N-H⋯O and weak C-H⋯F inter-actions, which form R 2 2[14] motifs, link the mol-ecules into infinite C(6) chains propagating along [001]. A weak C-H⋯π inter-action is also observed. A Hirshfeld surface analysis of the crystal structure indicates that the most significant contributions to the crystal packing are from H⋯H (53.3%), H⋯C/C⋯H (19.1%), H⋯F/F⋯H (15.7%) and H⋯O/O⋯H (7.7%) contacts. Density functional theory geometry-optimized calculations were compared to the experimentally determined structure in the solid state and used to determine the HOMO-LUMO energy gap and compare it to the UV-vis experimental spectrum.
Collapse
Affiliation(s)
- K. Anitha
- Research and Development Centre, Bharathiar University, Coimbatore, Tamilnadu 641 046, India
| | - S. Sivakumar
- Research and Development Centre, Bharathiar University, Coimbatore, Tamilnadu 641 046, India
- Department of Chemistry, Thiruvalluvar Arts and Science College, Kurinjipadi, Tamilnadu 607 302, India
| | - R. Arulraj
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117 583
| | - K. Rajkumar
- Research and Development Centre, Bharathiar University, Coimbatore, Tamilnadu 641 046, India
| | - Manpreet Kaur
- Department of Chemistry, Keene State College, 229 Main Street, Keene, NH 03435-2001, USA
| | - Jerry P. Jasinski
- Department of Chemistry, Keene State College, 229 Main Street, Keene, NH 03435-2001, USA
| |
Collapse
|
34
|
Affiliation(s)
- Gunasekaran Kuttiappan
- Department of Neurology, Government Mohan Kumaramangalam Medical College Hospital, Salem, Tamil Nadu, India
| | - S Sivakumar
- Department of Neurology, Government Mohan Kumaramangalam Medical College Hospital, Salem, Tamil Nadu, India
| | - K Thiruvarutchelvan
- Department of Neurology, Government Mohan Kumaramangalam Medical College Hospital, Salem, Tamil Nadu, India
| |
Collapse
|
35
|
|
36
|
Jakubek YA, Chang K, Sivakumar S, Yu Y, Giordano MR, Fowler J, Huff CD, Kadara H, Vilar E, Scheet P. Large-scale analysis of acquired chromosomal alterations in non-tumor samples from patients with cancer. Nat Biotechnol 2020; 38:90-96. [PMID: 31685958 PMCID: PMC8082517 DOI: 10.1038/s41587-019-0297-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 09/25/2019] [Indexed: 01/21/2023]
Abstract
Mosaicism, the presence of subpopulations of cells bearing somatic mutations, is associated with disease and aging and has been detected in diverse tissues, including apparently normal cells adjacent to tumors. To analyze mosaicism on a large scale, we surveyed haplotype-specific somatic copy number alterations (sCNAs) in 1,708 normal-appearing adjacent-to-tumor (NAT) tissue samples from 27 cancer sites and in 7,149 blood samples from The Cancer Genome Atlas. We find substantial variation across tissues in the rate, burden and types of sCNAs, including those spanning entire chromosome arms. We document matching sCNAs in the NAT tissue and the adjacent tumor, suggesting a shared clonal origin, as well as instances in which both NAT tissue and tumor tissue harbor a gain of the same oncogene arising in parallel from distinct parental haplotypes. These results shed light on pan-tissue mutations characteristic of field cancerization, the presence of oncogenic processes adjacent to cancer cells.
Collapse
Affiliation(s)
- Y A Jakubek
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| | - K Chang
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - S Sivakumar
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Y Yu
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - M R Giordano
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - J Fowler
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - C D Huff
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - H Kadara
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - E Vilar
- Department of Clinical Cancer Prevention, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - P Scheet
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| |
Collapse
|
37
|
Sivakumar S, Muthirulan P, Meenakshi Sundaram M. Adsorption kinetic and isotherm studies of Azure A on various activated carbons derived from agricultural wastes. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2014.10.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
|
38
|
Oakey J, Smith C, Underwood D, Afsharnasab M, Alday-Sanz V, Dhar A, Sivakumar S, Sahul Hameed AS, Beattie K, Crook A. Global distribution of white spot syndrome virus genotypes determined using a novel genotyping assay. Arch Virol 2019; 164:2061-2082. [PMID: 31131427 PMCID: PMC6591196 DOI: 10.1007/s00705-019-04265-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Accepted: 03/29/2019] [Indexed: 11/25/2022]
Abstract
White spot disease, caused by infection with white spot syndrome virus (WSSV), is a serious panzootic affecting prawn aquaculture. The disease has spread rapidly around the prawn-culturing regions of the world through a number of previously identified mechanisms. The ability to distinguish and trace strains of WSSV is of great benefit to identify, and then limit, the translocation routes of the disease. Here, we describe a novel genotyping method using 34 short tandem repeat regions of the viral genome concurrently. This technique is highly sensitive to strain differences when compared to previous methods. The efficacy of the described method is demonstrated by testing WSSV isolates from around the globe, showing regional genotypic differences. The differences in the genotypes were used to create a global minimum spanning network, and in most cases the observed relationships were substantiated with verification of transboundary movement. This novel panel of STR markers will provide a valuable epidemiological tool for white spot disease. We have applied this to an outbreak of the disease in Queensland, Australia, that occurred in 2016. While the results indicate that the source of this outbreak currently remains cryptic, the analyses have provided valuable insights with which to further study the origins of the strains involved.
Collapse
Affiliation(s)
- J Oakey
- Biosecurity Sciences Laboratory, Biosecurity Queensland, Queensland Department of Agriculture and Fisheries, 39 Kessels Road, Coopers Plains, QLD, 4108, Australia.
| | - C Smith
- Biosecurity Sciences Laboratory, Biosecurity Queensland, Queensland Department of Agriculture and Fisheries, 39 Kessels Road, Coopers Plains, QLD, 4108, Australia
| | - D Underwood
- Biosecurity Sciences Laboratory, Biosecurity Queensland, Queensland Department of Agriculture and Fisheries, 39 Kessels Road, Coopers Plains, QLD, 4108, Australia
| | - M Afsharnasab
- Department of Aquatic Animal Health and Diseases, Iranian Fisheries Research Organization, Tehran, Iran
| | - V Alday-Sanz
- National Aquaculture Group, King Abdul Aziz Rd, Al Murjan, Jeddah, 23715, Kingdom of Saudi Arabia
| | - A Dhar
- School of Animal and Comparative Biomedical Sciences, The University of Arizona, 1041 E Lowell St, Tucson, AZ, 85721, USA
| | - S Sivakumar
- Aquatic Animal Health Laboratory, C. Abdul Hakeem College, Melvisharam, Vellore District, Tamil Nadu, India
| | - A S Sahul Hameed
- Aquatic Animal Health Laboratory, C. Abdul Hakeem College, Melvisharam, Vellore District, Tamil Nadu, India
| | - K Beattie
- Biosecurity Queensland, Queensland Department of Agriculture and Fisheries, 41 George Street, Brisbane, 4000, Australia
| | - A Crook
- Biosecurity Queensland, Queensland Department of Agriculture and Fisheries, 41 George Street, Brisbane, 4000, Australia
| |
Collapse
|
39
|
Sivakumar S, Abu-Shah E, Ahern D, Mangal N, Reddy S, Rendek A, Silva M, Soonawalla Z, Middleton M, Dustin M. The T cell architecture of pancreatic ductal adenocarcinoma. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz155.233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
40
|
Lee L, Starkey T, Sivakumar S, Fotheringham S, Mozolowski G, Shearwood V, Palles C, Camilleri P, Kerr R, Kerr D. ToxNav germline genetic testing and PROMinet digital mobile application toxicity monitoring: results of a prospective single centre clinical utility study (PRECISE STUDY). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz155.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
41
|
Ashok Kumar GVS, Venkata Subramani CR, Kumar R, Sivakumar S, Murugan S, Varadharajan S, Sureshkumar KV, Ananthasivan K, Joseph M, Srinivasan G. Design, installation and preliminary flux measurements at the Fast Flux Experimental Facility (FFEF) of the Fast Breeder Test Reactor (FBTR). J Radioanal Nucl Chem 2019. [DOI: 10.1007/s10967-019-06463-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
42
|
Thamizhvanan S, Sivakumar S, Santhosh Kumar S, Vinoth Kumar D, Suryakodi S, Balaji K, Rajkumar T, Vimal S, Abdul Majeed S, Taju G, Sahul Hameed AS. Multiple infections caused by white spot syndrome virus and Enterocytozoon hepatopenaei in pond-reared Penaeus vannamei in India and multiplex PCR for their simultaneous detection. J Fish Dis 2019; 42:447-454. [PMID: 30659620 DOI: 10.1111/jfd.12956] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 11/26/2018] [Accepted: 11/27/2018] [Indexed: 06/09/2023]
Abstract
White leg shrimp, Penaeus vannamei, were collected on a monthly basis from grow-out ponds located at Tamil Nadu and Andhra Pradesh states along the east coast of India for screening of viral and other pathogens. Totally 240 shrimp samples randomly collected from 92 farms were screened for white spot syndrome virus (WSSV), infectious hypodermal and haematopoietic necrosis virus (IHHNV), infectious myonecrosis virus (IMNV) and Enterocytozoon hepatopenaei (EHP). The number of shrimp collected from shrimp farms ranged from 6 to 20 based on the body weight of the shrimp. All the shrimp collected from one farm were pooled together for screening for pathogens by PCR assay. Among the samples screened, 28 samples were WSSV-positive, one positive for IHHNV and 30 samples positive for EHP. Among the positive samples, four samples were found to be positive for both WSSV and EHP, which indicated that the shrimp had multiple infections with WSSV and EHP. This is the first report on the occurrence of multiple infections caused by WSSV and EHP. Multiplex PCR (m-PCR) protocol was standardized to detect both pathogens simultaneously in single reaction instead of carrying out separate PCR for both pathogens. Using m-PCR assay, naturally infected shrimp samples collected from field showed two prominent bands of 615 and 510 bp for WSSV and EHP, respectively.
Collapse
Affiliation(s)
- S Thamizhvanan
- Aquatic Animal Health Laboratory, C. Abdul Hakeem College, Melvisharam, Vellore, Tamil Nadu, India
| | - S Sivakumar
- Aquatic Animal Health Laboratory, C. Abdul Hakeem College, Melvisharam, Vellore, Tamil Nadu, India
| | - S Santhosh Kumar
- Aquatic Animal Health Laboratory, C. Abdul Hakeem College, Melvisharam, Vellore, Tamil Nadu, India
| | - D Vinoth Kumar
- Aquatic Animal Health Laboratory, C. Abdul Hakeem College, Melvisharam, Vellore, Tamil Nadu, India
| | - S Suryakodi
- Aquatic Animal Health Laboratory, C. Abdul Hakeem College, Melvisharam, Vellore, Tamil Nadu, India
| | - K Balaji
- Aquatic Animal Health Laboratory, C. Abdul Hakeem College, Melvisharam, Vellore, Tamil Nadu, India
| | - T Rajkumar
- Aquatic Animal Health Laboratory, C. Abdul Hakeem College, Melvisharam, Vellore, Tamil Nadu, India
| | - S Vimal
- Aquatic Animal Health Laboratory, C. Abdul Hakeem College, Melvisharam, Vellore, Tamil Nadu, India
| | - S Abdul Majeed
- Aquatic Animal Health Laboratory, C. Abdul Hakeem College, Melvisharam, Vellore, Tamil Nadu, India
| | - G Taju
- Aquatic Animal Health Laboratory, C. Abdul Hakeem College, Melvisharam, Vellore, Tamil Nadu, India
| | - A S Sahul Hameed
- Aquatic Animal Health Laboratory, C. Abdul Hakeem College, Melvisharam, Vellore, Tamil Nadu, India
| |
Collapse
|
43
|
|
44
|
Sivakumar S. A Study on Non-Performing Asset Management with Special Reference to Coimbatore City Co-Operative Bank Ltd, Tamilnadu. International Journal of Management Studies 2018. [DOI: 10.18843/ijms/v5i4(2)/08] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
|
45
|
Sivakumar S, Vimal S, Abdul Majeed S, Santhosh Kumar S, Taju G, Madan N, Rajkumar T, Thamizhvanan S, Shamsudheen KV, Scaria V, Sivasubbu S, Sahul Hameed AS. A new strain of white spot syndrome virus affecting Litopenaeus vannamei in Indian shrimp farms. J Fish Dis 2018; 41:1129-1146. [PMID: 29745450 DOI: 10.1111/jfd.12811] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 03/01/2018] [Indexed: 06/08/2023]
Abstract
White spot syndrome virus (WSSV)-infected shrimp samples collected from grow-out ponds located at Nellore, Andhra Pradesh, India, showed WSSV negative and positive by PCR using primer sets specific to ORF119 and VP28 gene of WSSV, respectively. This indicated the deletion of genetic fragments in the genome of WSSV. The WSSV isolate along with lab strain of WSSV was subjected to next-generation sequencing. The sequence analysis revealed a deletion of 13,170 bp at five positions in the genome of WSSV-NS (new strain) relative to WSSV-TH and WSSV-LS (lab strain). The PCR analysis using the ORF's specific primer sets revealed the complete deletion of 10 ORFs in the genome of WSSV-NS strain. The primer set was designed based on sequence covering ORF161/162/163 to amplify a product of 2,748 bp for WSSV-LS and 402 bp for WSSV-NS. Our surveillance programme carried out since 2002 revealed the replacement of WSSV-LS by WSSV-NS in Indian shrimp culture system.
Collapse
Affiliation(s)
- S Sivakumar
- OIE Reference Laboratory for WTD, C. Abdul Hakeem College, Melvisharam, India
| | - S Vimal
- OIE Reference Laboratory for WTD, C. Abdul Hakeem College, Melvisharam, India
| | - S Abdul Majeed
- OIE Reference Laboratory for WTD, C. Abdul Hakeem College, Melvisharam, India
| | - S Santhosh Kumar
- OIE Reference Laboratory for WTD, C. Abdul Hakeem College, Melvisharam, India
| | - G Taju
- OIE Reference Laboratory for WTD, C. Abdul Hakeem College, Melvisharam, India
| | - N Madan
- OIE Reference Laboratory for WTD, C. Abdul Hakeem College, Melvisharam, India
| | - T Rajkumar
- OIE Reference Laboratory for WTD, C. Abdul Hakeem College, Melvisharam, India
| | - S Thamizhvanan
- OIE Reference Laboratory for WTD, C. Abdul Hakeem College, Melvisharam, India
| | - K V Shamsudheen
- CSIR-Institute of Genomics and Integrative Biology, Delhi, India
- Academy of Scientific and Innovative Research, Delhi, India
| | - V Scaria
- CSIR-Institute of Genomics and Integrative Biology, Delhi, India
- Academy of Scientific and Innovative Research, Delhi, India
| | - S Sivasubbu
- CSIR-Institute of Genomics and Integrative Biology, Delhi, India
- Academy of Scientific and Innovative Research, Delhi, India
| | - A S Sahul Hameed
- OIE Reference Laboratory for WTD, C. Abdul Hakeem College, Melvisharam, India
| |
Collapse
|
46
|
Sivakumar S, Chandrasekaran A, Ravisankar R, Ravikumar S, Prince Prakash Jebakumar J, Vijayagopal P, Vijayalakshmi I, Jose M. Measurement of natural radioactivity and evaluation of radiation hazards in coastal sediments of east coast of Tamilnadu using statistical approach. Journal of Taibah University for Science 2018. [DOI: 10.1016/j.jtusci.2014.03.004] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- S. Sivakumar
- Department of Physics, Mailam Engineering College, Mailam 604304, Tamilnadu, India
| | - A. Chandrasekaran
- Vel Tech Dr. Rangarajan Dr. Sakunthala Engineering College, Avadi, Chennai 600 062, India
| | - R. Ravisankar
- Post Graduate and Research Department of Physics, Government Arts College, Thiruvannamalai 606603, Tamilnadu, India
| | - S.M. Ravikumar
- Post Graduate and Research Department of Physics, Government Arts College, Thiruvannamalai 606603, Tamilnadu, India
| | - J. Prince Prakash Jebakumar
- Coastal and Environmental Engineering, National Institute of Ocean Technology, Pallikaranai, Chennai 600100, Tamilnadu, India
| | - P. Vijayagopal
- Radiation Safety Section, Radiological Safety Division, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, Tamilnadu, India
| | - I. Vijayalakshmi
- Radiation Safety Section, Radiological Safety Division, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, Tamilnadu, India
| | - M.T. Jose
- Radiation Safety Section, Radiological Safety Division, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, Tamilnadu, India
| |
Collapse
|
47
|
Rajkumar K, Sivakumar S, Arulraj R, Kaur M, Jasinski JP, Manimekalai A, Thiruvalluvar A. Crystal structures of two new 3-(2-chloro-eth-yl)- r(2), c(6)-diarylpiperidin-4-ones. Acta Crystallogr E Crystallogr Commun 2018; 74:483-486. [PMID: 29765751 PMCID: PMC5946973 DOI: 10.1107/s2056989018003766] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 03/04/2018] [Indexed: 12/02/2022]
Abstract
The syntheses and crystal structures of 3-(2-chloro-eth-yl)-r-2,c-6-di-phenyl-piperidin-4-one, C19H20ClNO, (I), and 3-(2-chloro-eth-yl)-r-2,c-6-bis-(4-fluoro-phen-yl)piperidin-4-one, C19H18ClF2NO, (II), are described. The piperidone ring adopts a chair conformation in (I), whereas a slightly distorted chair conformation is formed in (II). The dihedral angle between the mean plane of the phenyl rings is 59.1 (1)° in (I) and 76.1 (1)° in (II). The crystal packing features weak inter-molecular N-H⋯O hydrogen bonds in each structure.
Collapse
Affiliation(s)
- K. Rajkumar
- Research and Development Centre, Bharathiar University, Coimbatore 641 046, Tamilnadu, India
| | - S. Sivakumar
- Research and Development Centre, Bharathiar University, Coimbatore 641 046, Tamilnadu, India
- Department of Chemistry, Thiruvalluvar Arts and Science College, Kurinjipadi 607 302, Tamilnadu, India
| | - R. Arulraj
- Research and Development Centre, Bharathiar University, Coimbatore 641 046, Tamilnadu, India
| | - Manpreet Kaur
- Department of Chemistry, Keene State College, 229 Main Street, Keene, NH, 03435-2001, USA
| | - Jerry P. Jasinski
- Department of Chemistry, Keene State College, 229 Main Street, Keene, NH, 03435-2001, USA
| | - A. Manimekalai
- Department of Chemistry, Annamalai University, Annamalai Nagar 608 002, Tamilnadu, India
| | - A. Thiruvalluvar
- Principal, Kunthavai Naacchiyaar Government Arts College for Women (Autonomous), Thanjavur 613 007, Tamilnadu, India
| |
Collapse
|
48
|
Mugundhan K, Chandrasekaran P, Sivakumar S, Sundaresan N, Senthilkumar P. Megalencephalic Leucoencephalopathy [Van Der Knaap Disease] in a Non Agarwal Family. J Assoc Physicians India 2018; 66:80. [PMID: 30341876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Affiliation(s)
| | | | | | - N Sundaresan
- Asst. Professor, Dept. of Radiology, Govt. Mohan Kumaramangalam Medical College Hospital, Salem, Tamil Nadu
| | - P Senthilkumar
- Asst. Professor, Dept. of Radiology, Govt. Mohan Kumaramangalam Medical College Hospital, Salem, Tamil Nadu
| |
Collapse
|
49
|
Vincent M, Kumarasingam K, Mane S, Shunmugam R, Sivakumar S, Uma Devi KR. Enhancing antimycobacterial activity of isoniazid and rifampicin incorporated norbornene nanoparticles. Int J Mycobacteriol 2018. [DOI: 10.4103/ijmy.ijmy_162_17] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
|
50
|
|