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Rajendra RE, Srikanth S, Kiranmayi M, Swathi SP, Dutta LD, Kumar A. Evaluation of Flow Rate, pH, and Buffering Capacity of Saliva in Children with Caries, Fluorosis, and Caries with Fluorosis. Int J Clin Pediatr Dent 2023; 16:587-590. [PMID: 37731792 PMCID: PMC10507300 DOI: 10.5005/jp-journals-10005-2645] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/22/2023] Open
Abstract
Background Saliva is one of the most important aids in the diagnosis of various oral diseases. Few physicochemical properties of saliva such as flow rate, pH, and buffering capacity often vary with the occurrence of dental caries, fluorosis, and other systemic conditions. Purpose The aim of the study was to evaluate the relationship between the salivary flow rate, pH, and buffering capacity in healthy children, children with caries, children with fluorosis, and children with both caries + fluorosis. Materials and methods The study population consisted of 144 children aged 7-14 years and were divided into four groups of 36 children each. Group I, 36 healthy children with no caries and fluorosis; group II, 36 children with caries (dmfs ≤ 10); group III, 36 children with fluorosis (moderate to severe); and group IV, 36 children with caries + fluorosis. Unstimulated saliva is collected from all the selected subjects and evaluated for the salivary flow rate, pH, and buffering capacity. The recorded data were tabulated and statistically analyzed using a paired t-test. Results The mean salivary flow rate and buffering capacity were found to be highest in group III when compared with all the other groups. The mean pH was greater in group I when compared with groups I, II, and III. Conclusion The physicochemical properties of saliva like pH, buffering capacity, and salivary flow rate alter with caries and fluorosis conditions. Hence, more clinical and laboratory studies are needed to determine the exact relationship between these physicochemical properties of saliva in dental caries and fluorosis. How to cite this article E RR, S S, M K, et al. Evaluation of Flow Rate, pH, and Buffering Capacity of Saliva in Children with Caries, Fluorosis, and Caries with Fluorosis. Int J Clin Pediatr Dent 2023;16(4):587-590.
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Affiliation(s)
- RE Rajendra
- Department of Pedodontics, Kamineni Institute of Dental Sciences, Nalgonda, Telangana, India
| | - S Srikanth
- Department of Pedodontics, Kamineni Institute of Dental Sciences, Nalgonda, Telangana, India
| | - M Kiranmayi
- Department of Pedodontics, Kamineni Institute of Dental Sciences, Nalgonda, Telangana, India
| | - SP Swathi
- Department of Pedodontics, Kamineni Institute of Dental Sciences, Nalgonda, Telangana, India
| | - Lalitha D Dutta
- Department of Pedodontics, Kamineni Institute of Dental Sciences, Nalgonda, Telangana, India
| | - Anil Kumar
- Department of Pedodontics, Kamineni Institute of Dental Sciences, Nalgonda, Telangana, India
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Srujana D, Shankar S, Bhanot R, Mohandas R, Srikanth S, Kumar A. Ray tracing biometry in post radial keratotomy eye. Eur J Ophthalmol 2022:11206721221102268. [PMID: 35570570 DOI: 10.1177/11206721221102268] [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] [Indexed: 11/16/2022]
Abstract
OBJECTIVE To report a case of post radial keratotomy (RK) cataract in a 55-year-old lady wherein biometry was done by ray-tracing method incorporated in scheimpflug topographer (Sirius + Scheimpflug Analyzer, CSO, Italy). METHOD In our case, we performed intraocular lens (IOL) power calculation using a recent concept of ray tracing with scheimpflug topographer and compared with traditional methods available at American Society of Cataract and Refractive Surgery(ASCRS) website (www.ascrs.org) for eyes with prior RK. Phacoemulsification was performed and a monofocal + 24.5D IOL implanted in the capsular bag. RESULT Manifest refraction at six weeks postoperative period was + 1.0DS/-2.0DC × 75° with spherical equivalence of 0. On comparison of all the methods used to calculate IOL power, the absolute errors of ray tracing and Barrett true K were found to be the least, 0.14 and 0.18 respectively. CONCLUSION Ray tracing biometry with scheimpflug topographer seems to provide accurate IOL power in post RK eyes.
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Affiliation(s)
- Dubbaka Srujana
- Department of Ophthalmology, 29590AFMC, Pune, Maharashtra, India
| | - Sandeep Shankar
- Department of Ophthalmology, 29590AFMC, Pune, Maharashtra, India
| | - Rohit Bhanot
- Department of Ophthalmology, 29590AFMC, Pune, Maharashtra, India
| | - Renu Mohandas
- Department of Ophthalmology, 29590AFMC, Pune, Maharashtra, India
| | - S Srikanth
- Department of Ophthalmology, 29590AFMC, Pune, Maharashtra, India
| | - Ashok Kumar
- Department of Ophthalmology, 29590AFMC, Pune, Maharashtra, India
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Thirukrishna JT, Krishna SRS, Shashank P, Srikanth S, Raghu V. Survey on Diagnosing CORONA VIRUS from Radiography Chest X-ray Images Using Convolutional Neural Networks. Wirel Pers Commun 2022; 124:2261-2270. [PMID: 35035106 PMCID: PMC8742162 DOI: 10.1007/s11277-022-09463-x] [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] [Figures] [Subscribe] [Scholar Register] [Accepted: 12/31/2021] [Indexed: 06/14/2023]
Abstract
Corona Virus continues to harms its effects on the people lives across the globe. The screening of infected persons has to be identified is a vital step because it is a fast and low-cost way. Certain above mentioned things can be recognized by chest X-ray images that plays a significant role and also used for examining in detection of CORONA VIRUS(COVID-19). Here radiological chest X-rays are easily available with low cost only. In this survey paper, Convolutional Neural Network(CNN) based solution that will benefit in detection of the Covid-19 positive patients using radiography chest X-Ray images. To test the efficiency of the solution, using data sets of publicly available X-Ray images of Corona virus positive cases and negative cases. Images of positive Corona Virus patients and pictures of healthy person images are divided into testing images and trainable images. The solution which are providing the good results with classification accuracy within the test set-up. Then GUI based application supports for medical examination areas. This GUI application can be used on any computer and performed by any medical examiner or technician to determine Corona Virus positive patients using radiography X-ray images. The result will be precisely obtaining the Covid-19 Patient analysis through the chest X-ray images and also results may be retrieve within a few seconds.
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Affiliation(s)
- J. T. Thirukrishna
- Department of Information Science and Engineering, Dayananda Sagar Academy of Technology and Management, Bangalore, Karnataka India
| | - Sanda Reddy Sai Krishna
- Department of Information Science and Engineering, Dayananda Sagar Academy of Technology and Management, Bangalore, Karnataka India
| | - Policherla Shashank
- Department of Information Science and Engineering, Dayananda Sagar Academy of Technology and Management, Bangalore, Karnataka India
| | - S. Srikanth
- Department of Information Science and Engineering, Dayananda Sagar Academy of Technology and Management, Bangalore, Karnataka India
| | - V. Raghu
- Department of Information Science and Engineering, Dayananda Sagar Academy of Technology and Management, Bangalore, Karnataka India
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Ravichandran M, Srikanth S, Kumar BA, Munusamy R. Efficacy and Safety of Eberconazole vs Sertaconazole in Localised Tinea Infection. Indian J Dermatol 2021; 66:573. [PMID: 35068526 PMCID: PMC8751703 DOI: 10.4103/ijd.ijd_893_20] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Topical antifungals especially azole group of drugs are effective agents in the treatment of dermatophytoses producing 100% clinical and mycological cure. Each of them vary having specific characteristics to tackle several clinical challenges like high relapse rate, recurrences and quality of life. AIMS AND OBJECTIVES To compare the efficacy and safety of Eberconazole and Sertaconazole in tinea infection. MATERIALS AND METHODS This was a randomized, observer-blinded, parallel-group study conducted at a dermatology out-patient department (OPD) of tertiary care teaching hospital in Puducherry. 85 patients with tinea corporis and tinea cruris infections who visited the dermatology OPD were enrolled in this study. The treatment phase involved two groups receiving either Sertaconazole 2% cream or Eberconazole 1% applied topically twice daily for 4 weeks. At the end of treatment phase, there was a 'follow-up phase' at the end of 4 weeks, where the patients were assessed clinically and mycologically. The data were analyzed using descriptive statistics using MS Excel version 2019 and SPSS version 15 for Windows. RESULTS The primary efficacy variables namely change in pruritus, erythema, induration, scaling and mycological cure significantly improved in both the groups, as compared to baseline (P < 0.001), in the treatment phase and follow-up phase. Intergroup comparison with respect to pruritus and scaling showed significant difference (P < 0.001), suggestive of better reduction of pruritus and scaling scores at 4 weeks with Sertaconazole when compared to Eberconazole. CONCLUSIONS Sertaconazole was better than Eberconazole in relieving signs and symptoms of dermatophytoses, especially pruritus, thereby improving patients' quality of life.
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Affiliation(s)
| | - S Srikanth
- Department of Dermatology, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth University, Pondicherry, Tamil Nadu, India
| | - B Aravinda Kumar
- Department of Pharmacology, Pondicherry Institute of Medical Sciences, Pondicherry, Tamil Nadu, India,Address for correspondence: Dr. Aravinda Kumar B, Associate Professor, Department of Pharmacology, Pondicherry Institute of Medical, Sciences Ganapathychettikulam, Pondicherry - 605 014, Tamil Nadu, India. E-mail:
| | - Rajesh Munusamy
- Department of Dermatology, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth University, Pondicherry, Tamil Nadu, India
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Kumar BAP, Anil R, Srikanth S, Priyadarisini NJ, Janakiraman P, Devivaraprasad M, Subramaniyan P, Nagaraj C. Community surveillance of COVID-19 pandemic: Perspectives and experiences of medical trainees using mixed-methods research design. Int J Acad Med 2021. [DOI: 10.4103/ijam.ijam_131_20] [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: 11/04/2022]
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Reddy RE, Merum K, Mudusu SP, Srikanth S, Dubey P. Effect of Digitalized Previsit Imagery on Behavior of Children in the Dental Operatory. Int J Clin Pediatr Dent 2021; 14:S124-S130. [PMID: 35645482 PMCID: PMC9108805 DOI: 10.5005/jp-journals-10005-2089] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Aim and objective The present study was aimed to determine the impact of exposure to digitalized previsit imagery technique on the anticipatory dental anxiety levels of children. Design 40 children, aged 4-8 years requiring noninvasive dental treatment were included in the study. Preintervention anxiety levels were assessed using Venham picture test (VPT) in the waiting room and randomly divided into two groups. The study group was exposed to the digitalized previsit imagery technique which included a customized cartoon video of dental operatory and the concerned pediatric dentist in his/her own voice through WhatsApp messenger. The other group was dealt with the conventional approach using verbal and nonverbal communication. Postintervention anxiety was assessed in both the groups and the difference was compared. Result A significant difference in anticipatory dental anxiety was found between the two groups (p<0.001) using SPSS software. There was no marked relation of age and sex with the reduction of anxiety levels after exposure to digitalized previsit imagery. Conclusion The idea of digitalizing previsit imagery can be a time saving approach which is helpful in managing anxious children before entering the dental operatory. How to cite this article Reddy RE, Merum K, Mudusu SP, et al. Effect of Digitalized Previsit Imagery on Behavior of Children in the Dental Operatory. Int J Clin Pediatr Dent 2021;14(S-2):S124-S130.
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Affiliation(s)
- Rajendra E Reddy
- Department of Pedodontics and Preventive Dentistry, Kamineni Institute of Dental Sciences, Nalgonda, Telangana, India
| | - Kiranmayi Merum
- Department of Pedodontics and Preventive Dentistry, Kamineni Institute of Dental Sciences, Nalgonda, Telangana, India
| | - Srujana Palicarp Mudusu
- Department of Pedodontics and Preventive Dentistry, Kamineni Institute of Dental Sciences, Nalgonda, Telangana, India
| | - S Srikanth
- Department of Pedodontics and Preventive Dentistry, Kamineni Institute of Dental Sciences, Nalgonda, Telangana, India
| | - Poornima Dubey
- Department of Pedodontics and Preventive Dentistry, Kamineni Institute of Dental Sciences, Nalgonda, Telangana, India
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Pazhamala LT, Chaturvedi P, Bajaj P, Srikanth S, Ghatak A, Chitikineni A, Bellaire A, Hingane A, Kumar CVS, Saxena KB, Weckwerth W, Saxena RK, Varshney RK. Multiomics approach unravels fertility transition in a pigeonpea line for a two-line hybrid system. Plant Genome 2020; 13:e20028. [PMID: 33016616 DOI: 10.1002/tpg2.20028] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 04/05/2020] [Accepted: 04/18/2020] [Indexed: 05/17/2023]
Abstract
Pigeonpea [Cajanus cajan (L.) Millsp.] is a pulse crop cultivated in the semi-arid regions of Asia and Africa. It is a rich source of protein and capable of alleviating malnutrition, improving soil health and the livelihoods of small-holder farmers. Hybrid breeding has provided remarkable improvements for pigeonpea productivity, but owing to a tedious and costly seed production system, an alternative two-line hybrid technology is being explored. In this regard, an environment-sensitive male sterile line has been characterized as a thermosensitive male sterile line in pigeonpea precisely responding to day temperature. The male sterile and fertile anthers from five developmental stages were studied by integrating transcriptomics, proteomics and metabolomics supported by precise phenotyping and scanning electron microscopic study. Spatio-temporal analysis of anther transcriptome and proteome revealed 17 repressed DEGs/DEPs in sterile anthers that play a critical role in normal cell wall morphogenesis and tapetal cell development. The male fertility to sterility transition was mainly due to a perturbation in auxin homeostasis, leading to impaired cell wall modification and sugar transport. Limited nutrient utilization thus leads to microspore starvation in response to moderately elevated day temperature which could be restored with auxin-treatment in the male sterile line. Our findings outline a molecular mechanism that underpins fertility transition responses thereby providing a process-oriented two-line hybrid breeding framework for pigeonpea.
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Affiliation(s)
- Lekha T Pazhamala
- Center of Excellence in Genomics & Systems Biology, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, Hyderabad, 502 324, India
| | - Palak Chaturvedi
- Molecular Systems Biology (MOSYS), Department of Functional and Evolutionary Ecology, Faculty of Life Sciences, University of Vienna, Althanstrasse 14, Vienna, 1090, Austria
| | - Prasad Bajaj
- Center of Excellence in Genomics & Systems Biology, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, Hyderabad, 502 324, India
| | - Sandhya Srikanth
- Center of Excellence in Genomics & Systems Biology, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, Hyderabad, 502 324, India
| | - Arindam Ghatak
- Molecular Systems Biology (MOSYS), Department of Functional and Evolutionary Ecology, Faculty of Life Sciences, University of Vienna, Althanstrasse 14, Vienna, 1090, Austria
| | - Annapurna Chitikineni
- Center of Excellence in Genomics & Systems Biology, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, Hyderabad, 502 324, India
| | - Anke Bellaire
- Molecular Systems Biology (MOSYS), Department of Functional and Evolutionary Ecology, Faculty of Life Sciences, University of Vienna, Althanstrasse 14, Vienna, 1090, Austria
- Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, Vienna, 1030, Austria
| | - Anupama Hingane
- Crop Improvement Theme, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, Hyderabad, 502 324, India
| | - C V Sameer Kumar
- Crop Improvement Theme, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, Hyderabad, 502 324, India
| | - K B Saxena
- Crop Improvement Theme, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, Hyderabad, 502 324, India
| | - Wolfram Weckwerth
- Molecular Systems Biology (MOSYS), Department of Functional and Evolutionary Ecology, Faculty of Life Sciences, University of Vienna, Althanstrasse 14, Vienna, 1090, Austria
- Vienna Metabolomics Center (VIME), University of Vienna, Vienna, Austria
| | - Rachit K Saxena
- Center of Excellence in Genomics & Systems Biology, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, Hyderabad, 502 324, India
| | - Rajeev K Varshney
- Center of Excellence in Genomics & Systems Biology, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, Hyderabad, 502 324, India
- Institute of Agriculture, University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia
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Srikanth S, Munganda HR, Eswar G. Study of Thyroid Profi le in Patients with Type 2 Diabetes Mellitus. J Assoc Physicians India 2020; 68:45. [PMID: 31979520] [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: 06/10/2023]
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Naidu BG, Srikanth S, Raju GJN, Sarita P. PIXE analysis of blood serum of breast cancer patients undergoing successive chemotherapy. J Radioanal Nucl Chem 2019. [DOI: 10.1007/s10967-019-06988-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Pérez‐Fortes M, Mian A, Srikanth S, Wang L, Diethelm S, Varkaraki E, Mirabelli I, Makkus R, Schoon R, Maréchal F, Van herle J. Design of a Pilot SOFC System for the Combined Production of Hydrogen and Electricity under Refueling Station Requirements. Fuel Cells (Weinh) 2019; 19:389-407. [PMID: 31680792 PMCID: PMC6813630 DOI: 10.1002/fuce.201800200] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Accepted: 03/22/2019] [Indexed: 06/10/2023]
Abstract
The objective of the current work is to support the design of a pilot hydrogen and electricity producing plant that uses natural gas (or biomethane) as raw material, as a transition option towards a 100% renewable transportation system. The plant, with a solid oxide fuel cell (SOFC) as principal technology, is intended to be the main unit of an electric vehicle station. The refueling station has to work at different operation periods characterized by the hydrogen demand and the electricity needed for supply and self-consumption. The same set of heat exchangers has to satisfy the heating and cooling needs of the different operation periods. In order to optimize the operating variables of the pilot plant and to provide the best heat exchanger network, the applied methodology follows a systematic procedure for multi-objective, i.e. maximum plant efficiency and minimum number of heat exchanger matches, and multi-period optimization. The solving strategy combines process flow modeling in steady state, superstructure-based mathematical programming and the use of an evolutionary-based algorithm for optimization. The results show that the plant can reach a daily weighted efficiency exceeding 60%, up to 80% when considering heat utilization.
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Affiliation(s)
- M. Pérez‐Fortes
- École Polytechnique Fédérale de LausanneGroup of Energy MaterialsRue de l'Industrie 17, Case postale 4401951SionSwitzerland
| | - A. Mian
- École Polytechnique Fédérale de LausanneIndustrial Process and Energy Systems EngineeringRue de l'Industrie 17, Case postale 4401951SionSwitzerland
| | - S. Srikanth
- German Aerospace Center (DLR)Institute of Engineering ThermodynamicsPfaffenwaldring 38–4070569StuttgartGermany
| | - L. Wang
- École Polytechnique Fédérale de LausanneGroup of Energy MaterialsRue de l'Industrie 17, Case postale 4401951SionSwitzerland
- École Polytechnique Fédérale de LausanneIndustrial Process and Energy Systems EngineeringRue de l'Industrie 17, Case postale 4401951SionSwitzerland
| | - S. Diethelm
- École Polytechnique Fédérale de LausanneGroup of Energy MaterialsRue de l'Industrie 17, Case postale 4401951SionSwitzerland
| | - E. Varkaraki
- SOLIDpower SAAvenue des Sports 261400Yverdon‐les‐BainSwitzerland
| | - I. Mirabelli
- HyGear B. V.Westervoortsedijk 736827AVArnhemThe Netherlands
| | - R. Makkus
- HyGear B. V.Westervoortsedijk 736827AVArnhemThe Netherlands
| | - R. Schoon
- Shell Global Solutions International B.V.Grasweg 311031 HWAmsterdamThe Netherlands
| | - F. Maréchal
- École Polytechnique Fédérale de LausanneIndustrial Process and Energy Systems EngineeringRue de l'Industrie 17, Case postale 4401951SionSwitzerland
| | - J. Van herle
- École Polytechnique Fédérale de LausanneGroup of Energy MaterialsRue de l'Industrie 17, Case postale 4401951SionSwitzerland
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Rao JC, Gowri Naidu B, Sarita P, Srikanth S, Naga Raju GJ. Elemental analysis of Pterocarpus Santalinus by PIXE and ICP-MS: chemometric approach. J Radioanal Nucl Chem 2019. [DOI: 10.1007/s10967-019-06598-3] [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: 11/30/2022]
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Satarkar RN, Srikanth S. Tumors and tumor-like conditions of the nasal cavity, paranasal sinuses, and nasopharynx: A study of 206 cases. Indian J Cancer 2018; 53:478-482. [PMID: 28485333 DOI: 10.4103/ijc.ijc_551_16] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION The nasal cavity, paranasal sinuses, and nasopharynx though in continuity form a complex system of upper respiratory tract; this region is endowed with a variety of elements such as epithelial, glandular, lymphoid, cartilage, and bone and is also exposed to a variety of infections, tumor-like and true neoplastic conditions. AIMS AND OBJECTIVES To find out the frequency of various tumors and tumor-like conditions of the nasal cavity, paranasal sinuses, and nasopharynx. MATERIALS AND METHODS The present study is an analysis of 206 tumors and tumor-like conditions of the nasal cavity, paranasal sinuses, and nasopharynx diagnosed during a period of 5 years. RESULTS The patients' age ranged from 14 months to 85 years. Benign lesions were predominant in the second and third decades, with 30 cases (68.1%) occurring in that age group. Malignancies occurred predominantly in the sixth and seventh decades with 28 (60.9%) cases in this age group. Benign lesions in the nasopharynx comprised 75% cases and malignancies 25%. Eighty-three (71.5%) tumor-like conditions occurred in the nose and antrochoanal region. CONCLUSION Angiofibroma was the most common benign tumor accounting for 25.55% of all neoplastic lesions. Squamous cell carcinoma was the most common malignancy at this site constituting 50% of all malignancies.
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Affiliation(s)
- R N Satarkar
- Department of Pathology, Shaheed Hasan Khan Mewati Government Medical College, Nalhar, Haryana, India
| | - S Srikanth
- Department of Pathology, Prathima Institute of Medical Sciences, Karimnagar, Telangana, India
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Abstract
BACKGROUND The study was conducted to know the various histopathological variants of meningiomas, the age incidence and sex ratio. MATERIALS AND METHODS A retrospective and prospective analysis of all the samples sent for histopathology for 2 years during June 2013-May 2015 was done to diagnose meningioma and its variants. Cases were analyzed in detail about the complete clinical history, exact location, and clinical and radiological diagnosis. The majority of the cases were clinically and radiologically diagnosed as meningioma. RESULTS Of 50 cases which were diagnosed as meningiomas, 21 were meningothelial variant, 15 were psammomatous, 8 were fibroblastic, 4 were transitional, and 1 case each of anaplastic and atypical variant. The most common age group was between 41 and 50 years. The youngest age group was 16 years and oldest was 70. The male:female ratio was 1:1.5. CONCLUSION The majority of the meningiomas have been observed between 41 and 50 years. Their proper recognition is therefore important to allow appropriate treatment. Histopathological study plays a major role by which we can diagnose the lesion. Meningiomas typically develop in middle-aged individuals and occur more frequently in women than men. These lesions may also occur in children.
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Affiliation(s)
- S Srikanth
- Department of Pathology, Pratima Institute of Medical Sciences, Karimnagar, Telangana, India
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Sai Giridhar S, Srikanth S, Asha B, Sai Kiran J, Jiten J, Vijayalakshmi V, Janardhana C, Sanjeevi C. Diagnostic role and association of Lp-PLA2 with coronary artery disease in a South Indian population. Indian Heart J 2017. [DOI: 10.1016/j.ihj.2017.09.031] [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: 11/24/2022] Open
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Venkata Mohan S, Srikanth S, Nikhil GN. Augmentation of bacterial homeostasis by regulating in situ buffer capacity: Significance of total dissolved salts over acidogenic metabolism. Bioresour Technol 2017; 225:34-39. [PMID: 27875766 DOI: 10.1016/j.biortech.2016.11.027] [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] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 11/04/2016] [Accepted: 11/05/2016] [Indexed: 06/06/2023]
Abstract
During anaerobic fermentation, consequent accumulation of acidic fermented products leads to the failure of pH homeostasis. The present study aimed to comprehend the changes in buffering capacity with addition of sodium salts of hydroxide, bicarbonate and phosphate. The results showed notable augmentation in buffer capacity and cumulative hydrogen production (CHP) compared to control. The influential factor is the amount of undissociated volatile fatty acids released that affected the cell metabolism and consequently biohydrogen generation. It is inferred that among the tested salts, sodium bicarbonate has substantial buffering capacity (β, 0.035± mol) ensuing maximum CHP (468± mL). Besides, bioelectrochemical analysis revealed variations in redox currents that aligned with biohydrogen production. The study provides valuable information on the role of inorganic dissolved salts that would be required to regulate H2 generation and acidogenesis in the aspects of acid-gas phase system.
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Affiliation(s)
- S Venkata Mohan
- Bioengineering and Environmental Sciences (BEES), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India.
| | - S Srikanth
- Bioengineering and Environmental Sciences (BEES), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India
| | - G N Nikhil
- Bioengineering and Environmental Sciences (BEES), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India
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Abstract
Plants are known to have many secondary metabolites and phytochemical compounds which are highly explored at biochemical and molecular genetics level and exploited enormously in the human health care sector. However, there are other less explored small molecular weight proteins, which inhibit proteases/proteinases. Plants are good sources of protease inhibitors (PIs) which protect them against diseases, insects, pests, and herbivores. In the past, proteinaceous PIs were considered primarily as protein-degrading enzymes. Nevertheless, this view has significantly changed and PIs are now treated as very important signaling molecules in many biological activities such as inflammation, apoptosis, blood clotting and hormone processing. In recent years, PIs have been examined extensively as therapeutic agents, primarily to deal with various human cancers. Interestingly, many plant-based PIs are also found to be effective against cardiovascular diseases, osteoporosis, inflammatory diseases and neurological disorders. Several plant PIs are under further evaluation in in vitro clinical trials. Among all types of PIs, Bowman-Birk inhibitors (BBI) have been studied extensively in the treatment of many diseases, especially in the field of cancer prevention. So far, crops such as beans, potatoes, barley, squash, millet, wheat, buckwheat, groundnut, chickpea, pigeonpea, corn, and pineapple have been identified as good sources of PIs. The PI content of such foods has a significant influence on human health disorders, particularly in the regions where people mostly depend on these kind of foods. These natural PIs vary in concentration, protease specificity, heat stability, and sometimes several PIs may be present in the same species or tissue. However, it is important to carry out individual studies to identify the potential effects of each PI on human health. PIs in plants make them incredible sources to determine novel PIs with specific pharmacological and therapeutic effects due to their peculiarity and superabundance.
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Affiliation(s)
| | - Zhong Chen
- Natural Sciences and Science Education, National Institute of Education, Nanyang Technological UniversitySingapore, Singapore
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Mehta N, Ramachandran R, Srikanth S. Erythema Necroticans - A Case Report. Indian J Lepr 2016; 87:255-257. [PMID: 29762955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Erythema Nodosum Leprosum (ENL) is characterized by evanescent, erythematous, painful raised nodules which fade within 48-72 hours. Necrotic and ulcerative forms are rare presentations of severe ENL. A 27 year old male patient presented with multiple erythematous nodules on trunk and extremities associated with high grade fever, joint pain and pedal edema. Patient developed ulceration of nodules associated with pain and burning sensation over another 3 days. Slit smear showed clumps of granular bacilli. Biopsy showed superficial dermis showing edema with dense focal perivascular infiltrate of lymphocytes, macrophages and few scattered neutrophils. Fite-Faraco stain was negative. Patient was diagnosed as a case of erythema necroticans and started on oral steroids and thalidomide. The histological findings illustrate the need to consider leprosy diagnosis in necrotizing vasculitis even when Virchow's cells are not found in the infiltrate. Thalidomide is the drug of choice in such cases. This patient showed a marked response to the drug with healing of all ulcers within 2 weeks of starting thalidomide.
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Srikanth S, Choong TW, Yan A, He J, Chen Z. An Efficient Method for Adventitious Root Induction from Stem Segments of Brassica Species. Front Plant Sci 2016; 7:943. [PMID: 27446170 PMCID: PMC4926720 DOI: 10.3389/fpls.2016.00943] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Accepted: 06/13/2016] [Indexed: 06/06/2023]
Abstract
Plant propagation via in vitro culture is a very laborious and time-consuming process. The growth cycle of some of the crop species is slow even in the field and the consistent commercial production is hard to maintain. Enhanced methods of reduced cost, materials and labor significantly impact the research and commercial production of field crops. In our studies, stem-segment explants of Brassica species were found to generate adventitious roots (AR) in aeroponic systems in less than a week. As such, the efficiency of rooting from stem explants of six cultivar varieties of Brassica spp was tested without using any plant hormones. New roots and shoots were developed from Brassica alboglabra (Kai Lan), B. oleracea var. acephala (purple kale), B. rapa L. ssp. chinensis L (Pai Tsai, Nai Bai C, and Nai Bai T) explants after 3 to 5 days of growing under 20 ± 2°C cool root zone temperature (C-RZT) and 4 to 7 days in 30 ± 2°C ambient root zone temperature (A-RZT). At the base of cut end, anticlinal and periclinal divisions of the cambial cells resulted in secondary xylem toward pith and secondary phloem toward cortex. The continuing mitotic activity of phloem parenchyma cells led to a ring of conspicuous white callus. Root initials formed from the callus which in turn developed into ARs. However, B. rapa var. nipposinica (Mizuna) explants were only able to root in C-RZT. All rooted explants were able to develop into whole plants, with higher biomass obtained from plants that grown in C-RZT. Moreover, explants from both RZTs produced higher biomass than plants grown from seeds (control plants). Rooting efficiency was affected by RZTs and explant cuttings of donor plants. Photosynthetic CO2 assimilation rate (Asat ) and stomatal conductance (gssat ) were significantly differentiated between plants derived from seeds and explants at both RZTs. All plants in A-RZT had highest transpiration rates.
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Srikanth S. Spectrum of cervical lesions observed in 500 cases: Carcinoma cervix the leading cause of death in females. Indian J Cancer 2016; 53:61-2. [PMID: 27146743 DOI: 10.4103/0019-509x.180818] [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] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION The present study was done to know the various histopathological variants in cervical lesions, to know the age incidence and to know the preventive measures and early detection of cervical cancer. MATERIALS AND METHODS This is a retrospective and prospective study done on all the hysterectomy specimens and on punch biopsy samples sent for histopathology. We studied a total of 500 cases for a period of 3 years. RESULTS Out of the 500 cases, 395 cases were non-neoplastic and 105 cases were neoplastic lesions. Chronic cervicitis was the most common non-neoplastic lesion and large cell non-keratinizing squamous cell carcinoma was the most common malignant lesion. CONCLUSION The main aim of presenting this study is to highlight the various histopthological variants, age incidence and to educate about the preventive measures and early detection of cervical cancer.
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Affiliation(s)
- S Srikanth
- Department of Pathology, Prathima Institute of Medical Sciences, Karimnagar, Telangana, India
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Saxena I, Srikanth S, Chen Z. Cross Talk between H2O2 and Interacting Signal Molecules under Plant Stress Response. Front Plant Sci 2016; 7:570. [PMID: 27200043 PMCID: PMC4848386 DOI: 10.3389/fpls.2016.00570] [Citation(s) in RCA: 154] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 04/13/2016] [Indexed: 05/18/2023]
Abstract
It is well established that oxidative stress is an important cause of cellular damage. During stress conditions, plants have evolved regulatory mechanisms to adapt to various environmental stresses. One of the consequences of stress is an increase in the cellular concentration of reactive oxygen species, which is subsequently converted to H2O2. H2O2 is continuously produced as the byproduct of oxidative plant aerobic metabolism. Organelles with a high oxidizing metabolic activity or with an intense rate of electron flow, such as chloroplasts, mitochondria, or peroxisomes are major sources of H2O2 production. H2O2 acts as a versatile molecule because of its dual role in cells. Under normal conditions, H2O2 immerges as an important factor during many biological processes. It has been established that it acts as a secondary messenger in signal transduction networks. In this review, we discuss potential roles of H2O2 and other signaling molecules during various stress responses.
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Affiliation(s)
| | | | - Zhong Chen
- Natural Sciences and Science Education, National Institute of Education, Nanyang Technological UniversitySingapore, Singapore
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Saxena I, Srikanth S, Chen Z. Cross Talk between H2O2 and Interacting Signal Molecules under Plant Stress Response. Front Plant Sci 2016; 7:570. [PMID: 27200043 DOI: 10.3389/ffpls.2016.00570] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 04/13/2016] [Indexed: 05/27/2023]
Abstract
It is well established that oxidative stress is an important cause of cellular damage. During stress conditions, plants have evolved regulatory mechanisms to adapt to various environmental stresses. One of the consequences of stress is an increase in the cellular concentration of reactive oxygen species, which is subsequently converted to H2O2. H2O2 is continuously produced as the byproduct of oxidative plant aerobic metabolism. Organelles with a high oxidizing metabolic activity or with an intense rate of electron flow, such as chloroplasts, mitochondria, or peroxisomes are major sources of H2O2 production. H2O2 acts as a versatile molecule because of its dual role in cells. Under normal conditions, H2O2 immerges as an important factor during many biological processes. It has been established that it acts as a secondary messenger in signal transduction networks. In this review, we discuss potential roles of H2O2 and other signaling molecules during various stress responses.
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Affiliation(s)
- Ina Saxena
- Natural Sciences and Science Education, National Institute of Education, Nanyang Technological University Singapore, Singapore
| | - Sandhya Srikanth
- Natural Sciences and Science Education, National Institute of Education, Nanyang Technological University Singapore, Singapore
| | - Zhong Chen
- Natural Sciences and Science Education, National Institute of Education, Nanyang Technological University Singapore, Singapore
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Saxena I, Srikanth S, Chen Z. Cross Talk between H2O2 and Interacting Signal Molecules under Plant Stress Response. Front Plant Sci 2016; 7:570. [PMID: 27200043 DOI: 10.3389/fpls.2016.00570/bibtex] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 04/13/2016] [Indexed: 05/20/2023]
Abstract
It is well established that oxidative stress is an important cause of cellular damage. During stress conditions, plants have evolved regulatory mechanisms to adapt to various environmental stresses. One of the consequences of stress is an increase in the cellular concentration of reactive oxygen species, which is subsequently converted to H2O2. H2O2 is continuously produced as the byproduct of oxidative plant aerobic metabolism. Organelles with a high oxidizing metabolic activity or with an intense rate of electron flow, such as chloroplasts, mitochondria, or peroxisomes are major sources of H2O2 production. H2O2 acts as a versatile molecule because of its dual role in cells. Under normal conditions, H2O2 immerges as an important factor during many biological processes. It has been established that it acts as a secondary messenger in signal transduction networks. In this review, we discuss potential roles of H2O2 and other signaling molecules during various stress responses.
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Affiliation(s)
- Ina Saxena
- Natural Sciences and Science Education, National Institute of Education, Nanyang Technological University Singapore, Singapore
| | - Sandhya Srikanth
- Natural Sciences and Science Education, National Institute of Education, Nanyang Technological University Singapore, Singapore
| | - Zhong Chen
- Natural Sciences and Science Education, National Institute of Education, Nanyang Technological University Singapore, Singapore
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Srikanth S. Megaloblastic anemia - A clinical spectrum and a hematological profile: The day-to-day public health problem. Med J DY Patil Univ 2016. [DOI: 10.4103/0975-2870.182497] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Sohn S, Park Y, Srikanth S, Arai A, Song M, Yu B, Shin KH, Kang MK, Wang C, Gwack Y, Park NH, Kim RH. The Role of ORAI1 in the Odontogenic Differentiation of Human Dental Pulp Stem Cells. J Dent Res 2015; 94:1560-7. [PMID: 26403672 DOI: 10.1177/0022034515608128] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Pulp capping, or placing dental materials directly onto the vital pulp tissues of affected teeth, is a dental procedure that aims to regenerate reparative dentin. Several pulp capping materials are clinically being used, and calcium ion (Ca(2+)) released from these materials is known to mediate reparative dentin formation. ORAI1 is an essential pore subunit of store-operated Ca(2+) entry (SOCE), which is a major Ca(2+) influx pathway in most nonexcitable cells. Here, we evaluated the role of ORAI1 in mediating the odontogenic differentiation and mineralization of dental pulp stem cells (DPSCs). During the odontogenic differentiation of DPSCs, the expression of ORAI1 increased in a time-dependent manner. DPSCs knocked down with ORAI1 shRNA (DPSC/ORAI1sh) or overexpressed with dominant negative mutant ORAI1(E106Q) (DPSC/E106Q) exhibited the inhibition of Ca(2+) influx and suppression of odontogenic differentiation and mineralization as demonstrated by alkaline phosphatase (ALP) activity/staining as well as alizarin red S staining when compared with DPSCs of their respective control groups (DPSC/CTLsh and DPSC/CTL). The gene expression for odontogenic differentiation markers such as osteocalcin, bone sialoprotein, and dentin matrix protein 1 (DMP1) was also suppressed. When DPSC/CTL or DPSC/E106Q cells were subcutaneously transplanted into nude mice, DPSC/CTL cells induced mineralized tissue formation with significant increases in ALP and DMP1 staining in vivo, whereas DPSC/E106Q cells did not. Collectively, our data showed that ORAI1 plays critical roles in the odontogenic differentiation and mineralization of DPSCs by regulating Ca(2+) influx and that ORAI1 may be a therapeutic target to enhance reparative dentin formation.
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Affiliation(s)
- S Sohn
- UCLA School of Dentistry, Los Angeles, CA, USA Laboratory of Viral Oncology and Aging Research, UCLA School of Dentistry, Los Angeles, CA, USA
| | - Y Park
- UCLA School of Dentistry, Los Angeles, CA, USA Laboratory of Viral Oncology and Aging Research, UCLA School of Dentistry, Los Angeles, CA, USA
| | - S Srikanth
- Department of Physiology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - A Arai
- UCLA School of Dentistry, Los Angeles, CA, USA Laboratory of Viral Oncology and Aging Research, UCLA School of Dentistry, Los Angeles, CA, USA
| | - M Song
- UCLA School of Dentistry, Los Angeles, CA, USA Laboratory of Viral Oncology and Aging Research, UCLA School of Dentistry, Los Angeles, CA, USA
| | - B Yu
- UCLA School of Dentistry, Los Angeles, CA, USA
| | - K-H Shin
- UCLA School of Dentistry, Los Angeles, CA, USA Laboratory of Viral Oncology and Aging Research, UCLA School of Dentistry, Los Angeles, CA, USA UCLA Jonsson Comprehensive Cancer Center, Los Angeles, CA, USA
| | - M K Kang
- UCLA School of Dentistry, Los Angeles, CA, USA Laboratory of Viral Oncology and Aging Research, UCLA School of Dentistry, Los Angeles, CA, USA UCLA Jonsson Comprehensive Cancer Center, Los Angeles, CA, USA
| | - C Wang
- UCLA School of Dentistry, Los Angeles, CA, USA UCLA Jonsson Comprehensive Cancer Center, Los Angeles, CA, USA
| | - Y Gwack
- Department of Physiology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - N-H Park
- UCLA School of Dentistry, Los Angeles, CA, USA Laboratory of Viral Oncology and Aging Research, UCLA School of Dentistry, Los Angeles, CA, USA UCLA Jonsson Comprehensive Cancer Center, Los Angeles, CA, USA David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - R H Kim
- UCLA School of Dentistry, Los Angeles, CA, USA Laboratory of Viral Oncology and Aging Research, UCLA School of Dentistry, Los Angeles, CA, USA UCLA Jonsson Comprehensive Cancer Center, Los Angeles, CA, USA
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Audhya M, Abirami D, Srikanth S. Atypical eschar: An unusual cutaneous manifestation of scrub typhus. J Vector Borne Dis 2015; 52:267-269. [PMID: 26418661] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023] Open
Affiliation(s)
- Moutusi Audhya
- Department of DVL, Mahatma Gandhi Medical College and Research Institute, Puducherry, India
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Mir RR, Kudapa H, Srikanth S, Saxena RK, Sharma A, Azam S, Saxena K, Varma Penmetsa R, Varshney RK. Candidate gene analysis for determinacy in pigeonpea (Cajanus spp.). Theor Appl Genet 2014; 127:2663-78. [PMID: 25331300 PMCID: PMC4236620 DOI: 10.1007/s00122-014-2406-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Accepted: 10/01/2014] [Indexed: 05/18/2023]
Abstract
KEY MESSAGE We report a likely candidate gene, CcTFL1, for determinacy in pigeonpea through candidate gene sequencing analysis, mapping, QTL analysis together with comparative genomics and expression profiling. Pigeonpea (Cajanus cajan) is the sixth most important legume crop grown on ~5 million hectares globally. Determinacy is an agronomically important trait selected during pigeonpea domestication. In the present study, seven genes related to determinacy/flowering pattern in pigeonpea were isolated through a comparative genomics approach. Single nucleotide polymorphism (SNP) analysis of these candidate genes on 142 pigeonpea lines found a strong association of SNPs with the determinacy trait for three of the genes. Subsequently, QTL analysis highlighted one gene, CcTFL1, as a likely candidate for determinacy in pigeonpea since it explained 45-96 % of phenotypic variation for determinacy, 45 % for flowering time and 77 % for plant height. Comparative genomics analysis of CcTFL1 with the soybean (Glycine max) and common bean (Phaseolus vulgaris) genomes at the micro-syntenic level further enhanced our confidence in CcTFL1 as a likely candidate gene. These findings have been validated by expression analysis that showed down regulation of CcTFL1 in a determinate line in comparison to an indeterminate line. Gene-based markers developed in the present study will allow faster manipulation of the determinacy trait in future breeding programs of pigeonpea and will also help in the development of markers for these traits in other related legume species.
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Affiliation(s)
- Reyazul Rouf Mir
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, 502 324 Hyderabad India
- Division of Plant Breeding and Genetics, Shere-Kashmir University of Agricultural Sciences and Technology of Jammu (SKUAST-J), Chatha, 180 009 Jammu India
| | - Himabindu Kudapa
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, 502 324 Hyderabad India
| | - Sandhya Srikanth
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, 502 324 Hyderabad India
| | - Rachit K. Saxena
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, 502 324 Hyderabad India
| | - Ashutosh Sharma
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, 502 324 Hyderabad India
- Institute of Molecular, Cell, and Systems Biology, College of Medical, Veterinary, and Life Sciences, University of Glasgow, Glasgow, G12 8QQ UK
| | - Sarwar Azam
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, 502 324 Hyderabad India
| | - Kulbhushan Saxena
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, 502 324 Hyderabad India
| | - R. Varma Penmetsa
- Department of Plant Pathology, University of California-Davis, Davis, CA 95616 USA
| | - Rajeev K. Varshney
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, 502 324 Hyderabad India
- School of Plant Biology and Institute of Agriculture, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009 Australia
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Srikanth S, Latha R, Roja EDN, Sairaman H, Janani B, Susiganeshkumar E. Effect of music on stress and academic performance of undergraduate medical students. Natl Med J India 2014; 27:351-352. [PMID: 26133348] [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: 06/04/2023]
Affiliation(s)
| | | | | | | | | | - E Susiganeshkumar
- Department of Community Medicine Sri Venkateshwaraa Medical College Hospital and Research Centre Puducherry
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Affiliation(s)
- R Shobana
- Department of Dermatology, Venerology and Leprosy, Mahatma Gandhi Medical College and Research Institute, Pondicherry, India
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Venkata Mohan S, Srikanth S, Chiranjeevi P, Arora S, Chandra R. Algal biocathode for in situ terminal electron acceptor (TEA) production: synergetic association of bacteria-microalgae metabolism for the functioning of biofuel cell. Bioresour Technol 2014; 166:566-574. [PMID: 24953968 DOI: 10.1016/j.biortech.2014.05.081] [Citation(s) in RCA: 40] [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] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 05/20/2014] [Accepted: 05/21/2014] [Indexed: 06/03/2023]
Abstract
Replacement of energy intensive mechanical aeration with sustainable oxygenic photosynthesis by microalgae at cathode was studied in dual-chambered microbial fuel cell (MFC). The synergistic association between bacterial fermentation at anode and the oxygenic photosynthesis of microalgae at cathode facilitated good power output as well as treatment efficiency. However, MFC operation during spring showed higher bioelectrogenic activity (57.0 mW/m(2)) over summer (1.1 mW/m(2)) due to the higher oxygenic photosynthetic activity of microalgae and respective dissolved oxygen (DO) levels. This can be attributed to RuBisCO inactivation under high temperatures and light intensity of summer, which prevented rich algal biomass growth as well as their photosynthetic activity. Unlike abiotic cathode, the algal cathode potential increased with operation time due to the algal biomass growth during spring but was negligible during summer. The catalytic currents on voltammetric signatures and the bioprocess parameters also corroborated well with the observed power output.
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Affiliation(s)
- S Venkata Mohan
- Bioengineering and Environmental Sciences (BEES), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India.
| | - S Srikanth
- Bioengineering and Environmental Sciences (BEES), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India
| | - P Chiranjeevi
- Bioengineering and Environmental Sciences (BEES), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India
| | - Somya Arora
- Bioengineering and Environmental Sciences (BEES), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India
| | - Rashmi Chandra
- Bioengineering and Environmental Sciences (BEES), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India
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Srikanth S, Anandam G. Cysticercosis: The day to day public health problem and the various sites affected by it - A one year study. Trop Parasitol 2014; 3:132-4. [PMID: 24470997 PMCID: PMC3889090 DOI: 10.4103/2229-5070.122133] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Accepted: 11/26/2013] [Indexed: 11/23/2022] Open
Abstract
Introduction: The present study is done to highlight the various regions in the body affected by cysticercosis and to educate the people about the personal hygiene and prevention of the parasite. Materials and Methods: This is a study done on patients who were referred for swelling in the body, which were diagnosed as cysticercosis in one of their differential diagnosis clinically. Results: During the 1 year study (from October 2011 to September 2012) we diagnosed seven cases of cysticercosis involving the various sites in the body. Our cases highlight the rare presentation of cysticercus infestation as cause of treatablelymphadenopathy. Conclusions: Cysticercosis should be included in the differential diagnosis of cervical swellings especially in endemic regions. Timely diagnosis and intervention help in preventing fatal complications.
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Affiliation(s)
- S Srikanth
- Department of Pathology, Prathima Institute of Medical Science, Karimnagar, Andhra Pradesh, India
| | - G Anandam
- Department of Pathology, Prathima Institute of Medical Science, Karimnagar, Andhra Pradesh, India
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Srikanth S, Anandam G, Kashif MM. A comparative study of fine-needle aspiration and fine-needle non-aspiration techniques in head and neck swellings. Indian J Cancer 2014; 51:98-9. [DOI: 10.4103/0019-509x.137935] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Mohanty MK, Behera BK, Jena SK, Srikanth S, Mogane C, Samal S, Behera AA. Knowledge attitude and practice of pesticide use among agricultural workers in Puducherry, South India. J Forensic Leg Med 2013; 20:1028-31. [PMID: 24237813 DOI: 10.1016/j.jflm.2013.09.030] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [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: 06/12/2013] [Revised: 09/25/2013] [Accepted: 09/29/2013] [Indexed: 11/25/2022]
Abstract
OBJECTIVES To study the level of knowledge and practice related to pesticides and their adverse effects among agricultural workers. MATERIALS AND METHODS A cross sectional study among 100 randomly selected agricultural workers, using or ever used pesticide within last one year was conducted in Puducherry, South India. The questionnaire was adapted from WHO field surveys of 'Exposure to Pesticides Standard Protocol' and similar studies. Data were collected by face to face interview. RESULTS All the participants were male with mean age of 54.3 yrs. While 70% of respondents perceived pesticide spraying affects a person's health, only 40% were aware that it affects the environment. Two thirds of the respondents (62%) were aware that pesticide enters the body through nose and affects lungs. Awareness on other modes of entry was less. Majority (76%) of them was aware of training programs conducted by government agriculture department on pest management. About 42% of farmers had good knowledge regarding pesticide. Between 40% and 70% of respondents were not using any protective equipments during pesticide spraying. Around 68% of farmers indiscriminately disposed empty containers while 48% buried the leftover pesticides. Significant association (p < 0.05) was observed between knowledge of the farmers and their practices related to pesticides. CONCLUSION Overall awareness of agricultural workers on pesticide was inadequate. Improper disposal of pesticides and its container can produce harm to the environment. The findings of the study emphasize the need to educate agricultural workers regarding safe and adequate use of pesticides to prevent health and environmental hazards.
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Affiliation(s)
- Manoj Kumar Mohanty
- Department of Forensic Medicine and Toxicology, All India Institute of Medical Sciences, Bhubaneswar 751019, Odisha, India.
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Srikanth S, Reddy MV, Mohan SV. Microaerophilic microenvironment at biocathode enhances electrogenesis with simultaneous synthesis of polyhydroxyalkanoates (PHA) in bioelectrochemical system (BES). Bioresour Technol 2012; 125:291-299. [PMID: 23037883 DOI: 10.1016/j.biortech.2012.08.060] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2012] [Revised: 08/13/2012] [Accepted: 08/15/2012] [Indexed: 06/01/2023]
Abstract
Microaerophilic microenvironment at biocathode was evaluated for electrogenesis along with the polyhydroxyalkanoates (PHA) accumulation in bio-electrochemical system (BES). The electrogenic activity (512 mV; 15.2 mW/m(2)) was extended for longer periods (144 h) which might be attributed to the lowering of losses due to the controlled microbial metabolism. Growth limiting stress at cathode due to lower oxygen levels and its effective utilization by the protons and electrons coming from anode, might have diverted the microbial metabolism towards PHA synthesis instead of oxidation. PHA accumulation (19% of dry cell weight (DCW)) was observed with higher hydroxy butyrate (HB) (89%) concentration at 48 th h in the cathodic biocatalyst and was re-utilized by the end of experiment. Bio-electro kinetics studied through voltammetry and Tafel analysis further supported the observed electrogenesis in microaerophilic reduction microenvironment, in terms of redox catalytic currents, Tafel slopes, exchange current densities and polarization resistance.
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Affiliation(s)
- S Srikanth
- Bioengineering and Environmental Centre (BEEC), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 607, India
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Thirunaaukarasu D, Srikanth S, Gomathi A, Preedha K, Latha S. Active case detection of tuberculosis by paramedical students. Natl Med J India 2012; 25:375-376. [PMID: 23998878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
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Srikanth S, Venkata Mohan S. Influence of terminal electron acceptor availability to the anodic oxidation on the electrogenic activity of microbial fuel cell (MFC). Bioresour Technol 2012; 123:480-487. [PMID: 22940358 DOI: 10.1016/j.biortech.2012.07.049] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Revised: 07/11/2012] [Accepted: 07/14/2012] [Indexed: 06/01/2023]
Abstract
The electrogenic activity of microbial fuel cell (MFC) with the function of anode placement from the terminal electron acceptor (TEA) was evaluated. Shorter anode distances from TEA showed higher electrogenesis due to the feasibility of higher electron acceptance as well as their discharge towards TEA. Substrate degradation was also higher at shorter anode placements from TEA due to the optimum substrate availability to the anodic biofilm. Bio-electro kinetics showed significant variation in the catalytic currents and exchange current densities with the function of anode placement indicating its role in electron acceptance and their transfer to the cathode. Anode placement of 3cm showed higher electrogenesis (406.38mW/m(2)) and substrate degradation (63.12%) along with significantly reduced polarization (6.72Ω) and charge transfer resistances compared to other anodic placements. The spacing between electrodes is crucial in accepting electrons as well as their discharge towards TEA which ultimately governs the power generation efficacy.
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Affiliation(s)
- S Srikanth
- Bioengineering and Environmental Centre (BEEC), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 607, India
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Srikanth S, Venkata Mohan S. Change in electrogenic activity of the microbial fuel cell (MFC) with the function of biocathode microenvironment as terminal electron accepting condition: influence on overpotentials and bio-electro kinetics. Bioresour Technol 2012; 119:241-251. [PMID: 22728788 DOI: 10.1016/j.biortech.2012.05.097] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2012] [Revised: 05/07/2012] [Accepted: 05/11/2012] [Indexed: 06/01/2023]
Abstract
Influence of biocathode microenvironment as terminal electron accepting process (TEAP) on the electrogenic activity of the microbial fuel cell (MFC)/bio-electrochemical system (BES) was evaluated in concurrence with the internal losses and bio-electro kinetics. Aerobic metabolism as TEAP showed power output (37.5 ± 2.7 mW/m(2)) for extended time (240 h) over abiotic (42.5 ± 1.5 mW/m(2)) electron accepting process. On the contrary, anaerobic metabolism as TEAP showed negligible power output in spite of increased retention time due to the absence of electron acceptor. Presence of strong electron acceptor conditions in aerobic metabolism facilitated gradual and stable reduction of electrons which helped to overcome the activation over potential and other potential losses. Voltammetric and amperometric analysis witnessed higher and sustainable electron discharge against the aerobic metabolism at cathode. Bio-electro kinetic analysis also showed lower Tafel slope and electron transfer co-efficient indicating the positive impact of aerobic metabolism at cathode in decreasing the internal losses.
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Affiliation(s)
- S Srikanth
- Bioengineering and Environmental Centre (BEEC), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 607, India
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Jain A, Kumar JS, Srikanth S, Rathod V, Roy Mahapatra D. Sensitivity of polyvinylidene fluoride films to mechanical vibration modes and impact after optimizing stretching conditions. POLYM ENG SCI 2012. [DOI: 10.1002/pen.23318] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Kumar AK, Reddy MV, Chandrasekhar K, Srikanth S, Mohan SV. Endocrine disruptive estrogens role in electron transfer: bio-electrochemical remediation with microbial mediated electrogenesis. Bioresour Technol 2012; 104:547-556. [PMID: 22137274 DOI: 10.1016/j.biortech.2011.10.037] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2011] [Revised: 10/12/2011] [Accepted: 10/12/2011] [Indexed: 05/31/2023]
Abstract
Bioremediation of selected endocrine disrupting compounds (EDCs)/estrogens viz. estriol (E3) and ethynylestradiol (EE2) was evaluated in bio-electrochemical treatment (BET) system with simultaneous power generation. Estrogens supplementation along with wastewater documented enhanced electrogenic activity indicating their function in electron transfer between biocatalyst and anode as electron shuttler. EE2 addition showed more positive impact on the electrogenic activity compared to E3 supplementation. Higher estrogen concentration showed inhibitory effect on the BET performance. Poising potential during start up phase showed a marginal influence on the power output. The electrons generated during substrate degradation might have been utilized for the EDCs break down. Fuel cell behavior and anodic oxidation potential supported the observed electrogenic activity with the function of estrogens removal. Voltammetric profiles, dehydrogenase and phosphatase enzyme activities were also found to be in agreement with the power generation, electron discharge and estrogens removal.
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Affiliation(s)
- A Kiran Kumar
- IICT-CCMB Dispensary, Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 607, India
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Velvizhi G, Babu PS, Mohanakrishna G, Srikanth S, Mohan SV. Evaluation of voltage sag-regain phases to understand the stability of bioelectrochemical system: Electro-kinetic analysis. RSC Adv 2012. [DOI: 10.1039/c1ra00674f] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Raghavulu SV, Babu PS, Goud RK, Subhash GV, Srikanth S, Mohan SV. Bioaugmentation of an electrochemically active strain to enhance the electron discharge of mixed culture: process evaluation through electro-kinetic analysis. RSC Adv 2012. [DOI: 10.1039/c1ra00540e] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Srikanth S, Thirunaaukarasu, Behera B, Mahajan P. Modular teaching: an alternative to routine teaching method for undergraduate medical students. Indian J Community Med 2011; 36:237-8. [PMID: 22090682 PMCID: PMC3214453 DOI: 10.4103/0970-0218.86529] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2010] [Accepted: 08/31/2011] [Indexed: 11/16/2022] Open
Affiliation(s)
- S Srikanth
- Department of Community Medicine, Sri Venkateshwaraa Medical College Hospital and Research Centre, Ariyur, Puducherry, India E-mail: srikanthlatha2003@ yahoo.co.in
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Mohan SV, Srikanth S. Enhanced wastewater treatment efficiency through microbially catalyzed oxidation and reduction: synergistic effect of biocathode microenvironment. Bioresour Technol 2011; 102:10210-10220. [PMID: 21920735 DOI: 10.1016/j.biortech.2011.08.034] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2011] [Revised: 08/05/2011] [Accepted: 08/06/2011] [Indexed: 05/31/2023]
Abstract
Microbially catalyzed treatment of wastewater was evaluated in both the anode and cathode chambers in dual chambered microbial fuel cell (MFC) under varying biocathode microenvironment. MFC operation with aerobic biocathode showed significant increment in both TDS (cathode, 90.2±1%; anode, 39.7±0.5%) and substrate (cathode, 98.07±0.06%; anode, 96.2±0.3%) removal compared to anaerobic biocathode and abiotic cathode operations (COD, 80.25±0.3%; TDS, 30.5±1.2%). Microbially catalyzed reduction of protons and electrons at cathode will be higher during aerobic biocathode operation which leads to gradual substrate removal resulting in stable bio-potential for longer periods facilitating salts removal. Bio-electro catalytic behavior showed higher exchange current density during aerobic biocathode operation resulting in induced electrochemical oxidation which supports the enhanced treatment. Anaerobic biocathode operation depicted relatively less TDS removal (anode, 16.35%; cathode, 16.04%) in both the chambers in spite of good substrate degradation (anode, 84%; cathode, 87.39%). Both the chambers during anaerobic biocathode operation competed as electron donors resulting in negligible bio-potential development.
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Affiliation(s)
- S Venkata Mohan
- Bioengineering and Environmental Centre, Indian Institute of Chemical Technology, Hyderabad 500 607, India.
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Singh A, Ambujam S, Srikanth S, Uma A. Monilethrix: one step more on the ladder of cytogenetics. Int J Trichology 2010; 2:18-9. [PMID: 21188018 PMCID: PMC3002404 DOI: 10.4103/0974-7753.66907] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Monilethrix is one of the hair shaft abnormalities with increased fragility of hair. Here we describe a ten-year-old girl with a history of hair loss and breakage of hair since three months of age, associated with keratosis pilaris along with an abnormal microscopic finding of a hair shaft. A cytogenetic study of the patient showed an unexpectedly high degree of Acrocentric association.
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Affiliation(s)
- Ashish Singh
- Department of Dermatology, Venereology, Leprology, Mahatma Gandhi Medical College and Research Institute, Pondicherry, India
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Umayal S, Kulathunga M, Somaratne S, Srikanth S, Kathriarachchi S, De Silva R. Validation of a functional screening instrument for dementia in an elderly sri lankan population: comparison of modified bristol and blessed activities of daily living scales. BMC Res Notes 2010; 3:268. [PMID: 20974013 PMCID: PMC2987868 DOI: 10.1186/1756-0500-3-268] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [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: 07/12/2010] [Accepted: 10/26/2010] [Indexed: 11/30/2022] Open
Abstract
Background Cognitive tests have been used in population surveys as first stage screens for dementia but are biased by education. However functional ability scales are less biased by education than the cognitive scale and thus can be used in screening for dementia. Objective To validate Activities of Daily Living (ADL) scale appropriate for use in assessing the presence of dementia in an elderly population living in care homes in Sri Lanka. Method Sinhalese version of the modified Bristol and Blessed scale was administered to subjects aged 55 years and above residing in 14 randomly selected elders' homes. Receiver Operating Characteristic (ROC) was used to determine the cut-off scores of both the scales. Results Based on the ROC analysis, optimal cut off score of the modified Bristol scale was 20 with a sensitivity of 100%, specificity of 74.2% and the area under the curve 0.933(95% CI: 0.871-0.995) while the optimal cut off score of the modified Blessed scale was 10.5 with a sensitivity of 100%, specificity of 71% and the area under the curve 0.892 (95% CI: 0.816-0.967). Conclusion The findings confirm that both the scales can be used in screening for dementia in the elderly living in care homes in Sri Lanka.
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Affiliation(s)
- S Umayal
- Dept of Anatomy, Faculty of Medical Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka.
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Kulathunga M, Umayal S, Somaratne S, Srikanth S, Kathriarachchi S, De Silva K. Validation of the Geriatric Depression Scale for an elderly Sri Lankan clinic population. Indian J Psychiatry 2010; 52:254-6. [PMID: 21180411 PMCID: PMC2990826 DOI: 10.4103/0019-5545.70979] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Geriatric Depression Scale (GDS) has not been validated for the elderly population in Sri Lanka. AIM To translate, validate, and examine the effectiveness of GDS and to suggest the optimal cut-off scores for elderly Sri Lankans attending a psychogeriatric clinic. MATERIALS AND METHODS The Sinhalese translation of GDS (GDS-S) was administered to people aged 55 years and above, attending a psychogeriatric outpatient clinic. The diagnostic performance of the instrument was compared against the ICD 10 diagnosis of a consultant psychiatrist, which was considered the 'gold standard'. Receiver operating characteristic (ROC) analysis was carried out to compare the diagnostic performance of the GDS-S. Optimal cut-off scores for depression and sensitivity and the specificity of the instrument was determined. RESULTS A total of 60 subjects formed the final sample (male/female=16/44) of which 30 were depressed, while 30 were age- and sex-matched controls. The optimal cut-off score for GDS-S was 8 for differentiating non-depressed from mildly depressed, while the cut-off score for moderate depression was 10. Sensitivity and specificity of GDS-S was 73.3% for differentiating depressed from non-depressed. CONCLUSION GDS is culturally acceptable, easy to use, sensitive, and a valid instrument to diagnose depression and to differentiate mild from moderate depression in an elderly Sri Lankan clinic population.
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Srikanth S, Venkata Mohan S, Sarma PN. Positive anodic poised potential regulates microbial fuel cell performance with the function of open and closed circuitry. Bioresour Technol 2010; 101:5337-5344. [PMID: 20223657 DOI: 10.1016/j.biortech.2010.02.028] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2009] [Revised: 02/04/2010] [Accepted: 02/05/2010] [Indexed: 05/28/2023]
Abstract
Positive influence of poised potential on microbial fuel cell (MFC) performance was observed with increase in the applied potential up to 600 mV and decreased thereafter. Higher power output (79.33 mW/m(2)) was observed at 600 mV poised potential under open circuit operation (OC). Closed circuit operation (CC) showed almost negligible power output due to continuous electron discharge against an external load (100 Omega). However, CC operation resulted in the higher substrate (chemical oxygen demand (COD)) degradation [61.23% (control); 70.46% (OC; 600 mV); 74.15% (CC; 600 mV)] and total dissolved solids (TDS) removal [29.17% (control); 43.75% (OC; 600 mV); 72.92% (CC; 600 mV)] efficiencies compared to OC. Electron discharge and energy conversion efficiency was also observed to be higher with 600 mV poised potential. Poising potential showed additional redox couples (-0.29+/-0.05 mV) on cyclic voltammetry. Application of poised potential during startup phase will help to enrich electrochemically active consortia on anode resulting in improved performance of MFC.
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Affiliation(s)
- S Srikanth
- Bioengineering and Environmental Centre, Indian Institute of Chemical Technology, Hyderabad 500 607, India
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Venkata Mohan S, Srikanth S, Lenin Babu M, Sarma PN. Insight into the dehydrogenase catalyzed redox reactions and electron discharge pattern during fermentative hydrogen production. Bioresour Technol 2010; 101:1826-1833. [PMID: 19913411 DOI: 10.1016/j.biortech.2009.10.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2009] [Revised: 10/12/2009] [Accepted: 10/13/2009] [Indexed: 05/28/2023]
Abstract
Dehydrogenase (DH) activity associated with bio-electrochemical behavior was analyzed for the first time to understand the redox reactions involved in fermentative hydrogen (H(2)) production process in concurrence with proton (H(+)) shuttling and electron (e(-)) discharge (ED) pattern. DH facilitates the availability of H(+) through redox reactions to make H(2). We have designed a comprehensive experimental study to evaluate the DH activity (H(+) shuttling) and ED to understand the biochemical process with the function of pH (5, 6, 7 and 8) and metabolic microenvironment [anaerobic, anoxic and aerobic (control)]. DH activity was observed to be higher during anaerobic operation suggesting the higher availability of H(+) and e(-) due to the inter-conversion of metabolites and the same was reflected in the voltammetry analysis. Higher H(2) production under anaerobic operation corroborated well with these findings. The DH activity associated with H(+) shuttling and ED was also correlated with the substrate degradation pattern.
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Affiliation(s)
- S Venkata Mohan
- Bioengineering and Environmental Centre, Indian Institute of Chemical Technology, Hyderabad 500 607, India.
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Ambujam S, Singh A, Srikanth S, Seethalakshmi GV. Multiple coalescing herald patches. Indian Dermatol Online J 2010; 1:46-7. [PMID: 23130197 PMCID: PMC3481401 DOI: 10.4103/2229-5178.73263] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
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