303 results on '"L. Ramakrishnan"'
Search Results
2. On Improved Performance of Underwater VLC System
- Author
-
Avik Kumar Das, Ankita Pramanik, Ankita Ray Chowdhury, and L. Ramakrishnan
- Published
- 2023
- Full Text
- View/download PDF
3. Parental affect profiles predict child emotion regulation and classroom adjustment in families experiencing homelessness
- Author
-
Madelyn H. Labella, Rebecca Distefano, Jillian S. Merrick, Jyothi L. Ramakrishnan, Eric L. Thibodeau, and Ann S. Masten
- Subjects
Sociology and Political Science ,Developmental and Educational Psychology ,Social Sciences (miscellaneous) - Published
- 2023
- Full Text
- View/download PDF
4. Methods for establishing a surveillance system for cardiovascular diseases in Indian industrial populations
- Author
-
KS Reddy, D Prabhakaran, V Chaturvedi, P Jeemon, KR Thankappan, L Ramakrishnan, BVM Mohan, CS Pandav, FU Ahmed, PP Joshi, R Meera, RB Amin, RC Ahuja, MS Das, and TM Jaison
- Subjects
Public aspects of medicine ,RA1-1270 - Abstract
OBJECTIVE: To establish a surveillance network for cardiovascular diseases (CVD) risk factors in industrial settings and estimate the risk factor burden using standardized tools. METHODS: We conducted a baseline cross-sectional survey (as part of a CVD surveillance programme) of industrial populations from 10 companies across India, situated in close proximity to medical colleges that served as study centres. The study subjects were employees (selected by age and sex stratified random sampling) and their family members. Information on behavioural, clinical and biochemical determinants was obtained through standardized methods (questionnaires, clinical measurements and biochemical analysis). Data collation and analyses were done at the national coordinating centre. FINDINGS: We report the prevalence of CVD risk factors among individuals aged 20-69 years (n = 19 973 for the questionnaire survey, n = 10 442 for biochemical investigations); mean age was 40 years. The overall prevalence of most risk factors was high, with 50.9% of men and 51.9% of women being overweight, central obesity was observed among 30.9% of men and 32.8% of women, and 40.2% of men and 14.9% of women reported current tobacco use. Self-reported prevalence of diabetes (5.3%) and hypertension (10.9%) was lower than when measured clinically and biochemically (10.1% and 27.7%, respectively). There was marked heterogeneity in the prevalence of risk factors among the study centres. CONCLUSION: There is a high burden of CVD risk factors among industrial populations across India. The surveillance system can be used as a model for replication in India as well as other developing countries.
- Published
- 2006
5. Mastery motivation and school readiness among young children experiencing homelessness
- Author
-
Ann S. Masten and Jyothi L. Ramakrishnan
- Subjects
Male ,media_common.quotation_subject ,Psychological intervention ,Child Behavior ,PsycINFO ,Academic achievement ,Developmental psychology ,Arts and Humanities (miscellaneous) ,Developmental and Educational Psychology ,Humans ,0501 psychology and cognitive sciences ,Social Behavior ,media_common ,Motivation ,Academic Success ,Schools ,Socioemotional selectivity theory ,05 social sciences ,Cognition ,Self Efficacy ,Emotional Regulation ,Psychiatry and Mental health ,Prosocial behavior ,Child, Preschool ,Ill-Housed Persons ,Female ,Psychology (miscellaneous) ,Psychological resilience ,Psychosocial ,050104 developmental & child psychology - Abstract
Psychosocial risk exposure in childhood is associated with a greater probability of emotional, behavioral, and academic problems. It is not surprising that children who experience homelessness, a marker of high cumulative risk, show significant emotional and behavioral problems and lower academic achievement than other children, including impoverished children who are not homeless. Nonetheless, some children manifest positive adjustment despite the hazards associated with homelessness, and it is important to identify protective influences that might be targeted for intervention. One potential factor is mastery motivation (MM), or the drive to control and master challenges, theoretically associated with resilience and empirically linked to adaptive cognitive outcomes in low-risk children. Currently, there is little research on MM in high-risk young children overall, and data are particularly limited on the key question of whether MM is associated with better outcomes in domains crucial for school readiness, including socioemotional adjustment, self-regulation, and academic competence. This study examined observed MM in 85 young children ages 3 to 5 living with their parents in an emergency shelter. Children completed behavioral tasks to assess MM, and measures linked with school readiness were assessed directly or by parent report. Higher MM was associated with better social and emotional functioning and emotion regulation but not math achievement or executive functioning. Follow-up analyses indicated that MM was indirectly associated with prosocial behavior through better emotion-regulation abilities. Implications are discussed for further research and for interventions designed to address educational disparities and promote school success for children experiencing homelessness. (PsycINFO Database Record (c) 2020 APA, all rights reserved).
- Published
- 2020
- Full Text
- View/download PDF
6. Parent Socialization of Positive and Negative Emotions: Implications for Emotional Functioning, Life Satisfaction, and Distress
- Author
-
Madelyn H. Labella, Bonnie Klimes-Dougan, Jyothi L. Ramakrishnan, and Rula B. Garside
- Subjects
050103 clinical psychology ,Recall ,05 social sciences ,Socialization ,Life satisfaction ,Emotional functioning ,Mental health ,Developmental psychology ,Distress ,Well-being ,Developmental and Educational Psychology ,0501 psychology and cognitive sciences ,Young adult ,Life-span and Life-course Studies ,Psychology ,050104 developmental & child psychology - Abstract
Few studies have explored the implications of parent socialization of positive emotions in children. Further, when considering outcomes of children, the focus has been primarily on links between parental emotion socialization and maladaptive child outcomes such as psychological distress, rather than adaptive outcomes such as life satisfaction. This study investigated whether recollection of supportive and unsupportive maternal and paternal responses to one’s expressions of positive and negative emotions in childhood was linked with life satisfaction and psychological distress in young adulthood, and consideration of whether parent emotion socialization and young adult outcomes were indirectly associated via young adult emotional experience. 262 college students completed instruments evaluating parental emotion socialization practices in childhood, emotional experience, life satisfaction, and psychological distress. Fathers’ supportive responses to positive emotions in childhood was indirectly associated with greater young adult life satisfaction through greater young adult positive emotional experience. Fathers’ supportive responses to negative emotions in childhood was indirectly associated with less young adult distress through less young adult negative emotional experience. Mothers’ supportive responses to negative emotions in childhood was indirectly associated with greater young adult life satisfaction through greater young adult positive emotional experience. Finally, fathers’ unsupportive responses to negative emotions in childhood was indirectly associated with greater young adult distress through greater young adult negative emotional experience. These results, if replicated with prospective longitudinal methodology, suggest that mother and father figures play unique roles in shaping the emotional lives of children, with long-term implications for mental health and well-being.
- Published
- 2019
- Full Text
- View/download PDF
7. CaSR expression in normal parathyroid and PHPT: new insights into pathogenesis from an autopsy-based study
- Author
-
S, Agarwal, S, Kardam, P, Chatterjee, C, Kumar, M, Boruah, M C, Sharma, M, Tabin, and L, Ramakrishnan
- Subjects
Adult ,Male ,Parathyroid Glands ,Intracellular Calcium-Sensing Proteins ,Parathyroid Neoplasms ,Gene Expression Profiling ,Immunologic Techniques ,Humans ,Female ,Autopsy ,Hyperparathyroidism, Primary ,Immunohistochemistry ,Receptors, Calcium-Sensing - Abstract
Calcium sensing receptor (CaSR), on the surface of normal parathyroid cells, is essential for maintaining serum calcium levels. The normal pattern of CaSR immunostaining remains undefined and is presumptively circumferential. Given the physiological variation in serum calcium, we postulated that CaSR expression could not be uniformly circumferential. Also, cytoplasmic expression has not been evaluated either in normal or pathological tissues. We studied normal parathyroid tissues derived from forensic autopsies and those rimming parathyroid adenomas for membranous and cytoplasmic CaSR immunoexpression. Results were compared with primary hyperparathyroidism (PHPT) to look for any pathogenetic implications.We evaluated 34 normal parathyroid tissues from 11 autopsies, 30 normal rims, 45 parathyroid adenoma, 10 hyperplasia, and 7 carcinoma cases. Membranous expression was categorized complete/incomplete and weak/moderate/strong; scored using Her2/Neu and Histo-scores; predominant pattern noted. Cytoplasmic expression was categorized negative/weak/moderate/strong; predominant intensity noted.Normal autopsy-derived parathyroid tissues were Her2/Neu 3 + , but incomplete membranous staining predominated in 85%. Their immune-scores were significantly more than the cases (p 0.05). The mean histo-score of normal rims was intermediate between the two (p 0.05). Cytoplasmic expression was strong in all autopsy-derived tissues, weak/negative in hyperplasia (100%), moderate in 16% adenomas, and 43% carcinomas.Normal autopsy-derived parathyroid tissues showed strong but predominantly incomplete membranous expression. Surface CaSR expression decreased in PHPT and is probably an early event in parathyroid adenoma, seen even in normal rims. Whether there is a defect in CaSR trafficking from the cytoplasm to the cell surface in adenoma and carcinoma needs further evaluation.
- Published
- 2021
8. Efficient multiple hypotheses tracking scheme using adaptive number of ‘K’ best hypotheses for target tracking in clutter
- Author
-
L. Ramakrishnan, P. Viji Paul, and Sarojini Vudumu
- Subjects
Scheme (programming language) ,Exponential growth ,Computational complexity theory ,Data association ,Computer science ,Monte Carlo method ,Multiple hypotheses ,Clutter ,Tracking (particle physics) ,Algorithm ,computer ,computer.programming_language - Abstract
In a cluttered target tracking environment multiple hypotheses tracking (MHT) based algorithms improve the data association by considering a batch of measurements. To reduce the computational complexity generated by the exponential growth of hypotheses, the number of hypotheses is limited to k in the k best MHT algorithm. In conventional k best MHT algorithm the value of k is fixed. This paper proposes a method to keep the value of k adaptive depending on the scenario complexity and also depending on the likelihood of the valid hypotheses. The Monte Carlo simulation results carried out in this paper justifies the advantage of the proposed method compared to the fixed k-best MHT algorithm.
- Published
- 2018
- Full Text
- View/download PDF
9. A Cross-sectional Study of Sexual Practices, Sexually Transmitted Infections and Human Immunodeficiency Virus among Male-to-Female Transgender People
- Author
-
P. Rajendran, Sai Subhasree Raghavan, P.S. Saravanamurthy, G. Ashok, Priya Maria Miranda, Julia H. Arnsten, S. Vijayakumar, and L. Ramakrishnan
- Subjects
Casual ,business.industry ,Transmission (medicine) ,Cross-sectional study ,Psychological intervention ,virus diseases ,Human sexuality ,General Medicine ,Intervention (counseling) ,Structured interview ,Transgender ,Medicine ,business ,Social psychology ,Demography - Abstract
Problem statement: Designing HIV interventions requires evidence on links between behaviors and elevated transmission risk that remains scanty for male-to-female Transgender (TG) people in India. Approach: In 2007, we carried out a cross-sectional study through convenience sampling of 131 TG aged > 18years, residing in Chennai at least prior to six months of the study. Sexual practices and perception towards STIs and HIV were identified through structured interviews. HIV and STIs were diagnosed from blood and urine samples. Associations among sexual practices, HIV/STI and alcohol use were analyzed using contingency tables. Results: The study participants had a mean age of sexual debut of 12.86 years. From the sample, 91% reported involvement with casual, paid and/or long-term sex partners at the time of the study and reported having anal sex in similar proportions across all three types of partners. More individuals failed to use condoms with long-term partners (44%) than with casual (17%) or paid (9%) partners. Alcohol use was more strongly associated with multiple casual and paid partners than with exclusive long-term partners (p
- Published
- 2010
- Full Text
- View/download PDF
10. Mercury detection at boron doped diamond electrodes using a rotating disk technique
- Author
-
M. S. Seehra, Donald A. Tryk, Ayyakkannu Manivannan, and Akira Fujishima, James E. Butler, L. Ramakrishnan, and E. Granite
- Subjects
Thiocyanate ,General Chemical Engineering ,Inorganic chemistry ,Analytical chemistry ,Diamond ,chemistry.chemical_element ,engineering.material ,Chloride ,Analytical Chemistry ,Mercury (element) ,Anodic stripping voltammetry ,chemistry.chemical_compound ,chemistry ,Electrode ,Electrochemistry ,medicine ,engineering ,Differential pulse voltammetry ,Rotating disk electrode ,medicine.drug - Abstract
Quantification of mercury ions at the ppt level is reported using highly boron-doped diamond (BDD) film electrodes by differential pulse voltammetry (DPV). The DPV experiments were performed in nitrate, thiocyanate and chloride media. Investigation in chloride medium is important since practical samples usually contain chloride impurities. The formation of calomel in a chloride medium on the BDD surface is avoided by the co-deposition of purposely-added gold (3 ppm) during DPV detection. Excellent linear calibration plots have been obtained in all media for ppb ranges. Mercury in the 0.005–50 ppb range has been detected using a rotating disk electrode (RDE) technique in real samples (KCl impinger solutions) prepared from flue gas released by a pilot-scale coal-fired combustion facility. A portable instrument has also been used for the detection of mercury efficiently. These studies have demonstrated that BDD mounted in an RDE system together with gold co-deposition is able to detect mercury with sufficient sensitivity for practical analysis of environmental samples.
- Published
- 2005
- Full Text
- View/download PDF
11. Grid computing - Securing next-generation grids
- Author
-
L. Ramakrishnan
- Subjects
User information ,Information privacy ,Context-aware pervasive systems ,Cloud computing security ,Data grid ,Computer science ,computer.software_genre ,Computer security ,Computer Science Applications ,Semantic grid ,Grid computing ,Hardware and Architecture ,Virtual machine ,computer ,Software - Abstract
Grid computing poses tough security challenges. What do we have - and what do we still need - to make grids safe for tomorrow? Grid computing harnesses existing self contained systems - from personal computers to supercomputers to let users share processing cycles and data across geographical and organizational boundaries. This emerging technology can transform the computational infrastructure into an integrated, pervasive virtual environment. However, although commercial and research organizations might have collaborative or monetary reasons to share resources, they are unlikely to adopt such a distributed infrastructure until they can rely on the confidentiality of the communication, the integrity of their data and resources, and the privacy of the user information. In other words, large-scale deployment of grids will occur when users can count on their security.
- Published
- 2004
- Full Text
- View/download PDF
12. Implementation of placement and routing algorithms for computer aided design of printed circuit boards.
- Author
-
Lalit M. Patnaik, B. A. Gadkari, and L. Ramakrishnan
- Published
- 1983
- Full Text
- View/download PDF
13. Track C Epidemiology and Prevention Science
- Author
-
E. Munyi, P. Iracheta, W. El Sadr, Thomas L. Patterson, N. McGrath, W. Areekul, J. Konikoff, J.S. Graff-Zivin, J. Valladares, O. Levina, A. Wohl, G. Kirk, C. Nhlapo, S. Hoffman, A. Hughes, S. Bertagnolio, S. Gari, B. Grinsztejn, L. Sherr, C. Mattson, T. Finlayson, M. Schim van der Loeff, J.M. Wekesa, R. Qazi, B. Elul, D. Nsona, B. Le, Margaret Hellard, L. Cottle, G. Kwesigabo, P. Mushati, M. Sangeeth, J.T. Maricato, S. Kippax, W. Aung, M. Yu, A. Ochieng, A. Bennani, I. Massud, K. Kardos, K. Muessig, M. Kato, D.N. Raugi, A. Mkhwanazi, M. Roehler, J. Casillas, G. Rutherford, S.J. Gange, N. Kumarasamy, O. Abaza, H.C. Johnson, J.B.F. de Wit, K. Brady, K. Sigaloff, Colleen F. Kelley, J. Kuruc, Supriya D. Mehta, M. Thrun, G. Likatavicius, K. Muldoon, P. Cherutich, M. Siminyu, C. Scanlon, B. Rodriguez, T. Okeyo Adipo, C. Nyamukapa, D. Reach, M. Morris, I. N'Doye, B. Engelsmann, V. Suwanvanichkij, S. Khobragade, J. Nielsen-Bobbit, J. Mitchell, S. Phillips, C.B. Borkowf, C. Nitrahally Mallachar, D.L. Sodora, T. Guadamuz, Christopher K Fairley, G. Phatedi, V. Tepper, J. Willig, Han-Zhu Qian, K. Underhill, E.R.M. Nunes, E. Machakaire, J. Bouscaillou, M. Boyes, L.D. Chava, M. Taylor, X. Zhang, Charles S. Morrison, V. Sharma, R. Firestone, M.R. Lamb, H. James, S.M. Cohen, H. Crane, J. Coleman, K.W. Ranby, H. Van Renterghem, J. Eckenrode, S. Mwalili, M.H. Ngolobe, J. Mitty, S. Sivalenka, T. Bhatnagar, S. Abel, I. Oumzil, J.R. Lama, E. Connick, S. Kennedy, K. Nielsen-Saines, H. Muyinda, Y.M. Nakamura, P. Thomas, R. Salata, I. Kuo, F. Sall, J. Menten, G. Mkandawire, E. Mills, K.A. Gebo, Rob J. Fredericksen, P. Kasonde, S. Braunstein, Erin M. Kahle, B. Kilama, L. Beer, I. de Beer, N. Elkot, C.K. Cunningham, G. Peytavin, T.-Y. Liu, J.W. Eaton, T. Chuenchitra, Jorge Sanchez, N. Hamunime, R. Grant, J.E. Mantell, T. Mashigo, N. Nazim, N.N. Zheng, B. Cutler, R. Rangsin, N. Knight, A.M. Malone, J. Zaidi, P. Edwards, J.T. Brooks, K. Alami, M.K. Mainkar, A. Kowalski, N. Jack, D. Pieterse, Mark Stoove, M. Mirira, C. Schumacher, A.J. Schmidt, W. Jaoko, C.M. Lowndes, S. Atallah, B. Yang, M. Fox, R. Lebelonyane, B. Feldman, S. Caffe, James Kiarie, A. Simo, E. Kajawo, L. Thomas, T.B. Masvawure, R. Staub, C. Ngoloyi, S. Galea, E.L. Ross, F. Noubary, J. Vanhommerig, S. Patel, S. Khanakwa, L. Hightow-Weidman, S. Braithwaite, P. Perchal, J. Mulilo, C.S. Meade, M. Tsepe, A. Suthar, W. Zule, B. Singh, B. Panchia, L. Yin, J. Skinner, S. Ramanathan, K.M. Gray, H. Ramy, S.M. Graham, M.T. Schechter, H. Zhang, R. Harrison, J.P. Zukurov, A. Gonzalez-Rodríguez, L. Johnston, Maria Prins, T. Smith, S. Stoelzl, N. Siegfried, D. De Angelis, G. Paz-Bailey, D. Taljaard, D. Operario, J.D. Fishel, Dobromir T. Dimitrov, Jared M. Baeten, K.J. Sikkema, A. Urbina, S. Birnel-Henderson, Deborah Donnell, J. Borders, R. Killian, G. Mavise, H. Gamieldien, S. Isac, D. Yang, J. Gunthorp, A. Lansky, K.N. Althoff, M. Vincent, J. Lingappa, Patrick S. Sullivan, M.E.E. Kretzschmar, W. Hanekom, M. De Klerk, C. Odhiambo, J. Shafi, V. Kodali, H. Jackson, S. Bharat, Michael Pickles, R. Geskus, R. Jones, L. Vu, P. Messeri, W. Duffus, R. Limaye, M. Collumbien, G. Allen, E. Elghamrawy, R. Spijker, F. Traore, N. Abdallar, K. Lythgoe, Eli S. Rosenberg, M. van de Laar, S. Stromdahl, A. Bowring, P. Schmid, Grant Colfax, S. Duncan, V. Elharrar, T. Madidimalo, H. Tran Viet, M. Tran Thi, K.E. Nelson, D.C. Sokal, S. Mathew, M. Baum, R. Hari Kumar, Sonia Napravnik, J. Lou, Paula M. Frew, M. Alary, Mari M. Kitahata, Tsungai Chipato, R.C. Berg, I. Maclean, D. Kimanga, Y.T. Duong, L. Jacobson, David R. Bangsberg, F. Odhiambo, A. Malone, G. Wang, E. Schiff, Y. Ding, C. Mlambo, D. Wheeler, J. Martin, A. Kwon, X. Xia, R. Granich, Yuhua Ruan, L.-G. Bekker, Stephen L. Boswell, S. Johnson, F. Njenga, F. Gardner, S. Sherman, Q. Abdool Karim, A. Hoare, K. Thomas, Connie Celum, A. Balaji, L. Metsch, M.J. Mugavero, J. Hahn, J. Denison, M. Kretzschmar, M.R. Lozada, A. Zee, J. Frohlich, P.-L. Chen, D. Vyas, Z.A. Stein, I. Hoffman, S. Weber, S. Abou Elmagd, J. Kriebs, D. Skinner, H. Cross, E. Piwowar-Manning, R. Wiegand, B. Furness, A.C. Voetsch, Q. Awori, S. Kapiga, V. Mugisha, R. Nkambule, F. Tanser, S.E. Hawes, R. Ochai, C. Mathews, Myron Essex, M. Chilila, P. MacPhail, P. Michel, J.H. McMahon, V. Sharp, P. Dupas, M. Schaan, Tonia Poteat, S.A. Kaplan, J. Peinado, L. Zhang, P. Weatherburn, N.M. Fernandes, I. Nieves-Rivera, M. Eberhart, A. Presanis, J. Tejero, A. Pettifor, N. Wadonda, R. Adhikary, S. Shoptaw, K. Page, Nelly Mugo, C. Kuo, D. Cohan, V. Delpech, G.D. Kirk, J. Stover, M. Cohen, V. Cummings, C. Johnson, J. Pilotto, J. Tiffany, S. Rajaram, F. Assouab, V. Akelo, Jeanne M. Marrazzo, Y. Shao, J. Schulden, M. Mahy, Z. Hennessey, A. Sunantarod, S. Meesiri, T. Hallett, J.R. Williams, K. Hayashi, M. Barone, A. La Marca, T. Gamble, J. Moguche, S.Y. Hong, K. Kana, B.R. Santos, Mary S. Campbell, B. Auvert, C.H. Watts, P. Ntshangase, A.M. Foss, A. Anglemyer, P. Li, S.P. Ravi, T.J. Smith, Mark N. Lurie, L. Laurenco, A. Chaturvedula, A.C. Justice, J. Sayles, K. Rou, S. Behel, G. de Bruyn, A. Cescon, S. Pont, Till Bärnighausen, R.A. Willis, D. Forrest, P. Vickerman, A. Cope, M. Eliya, J. Mellors, H.B. Jaspan, J. Grinsdale, Y. Dong, James I. Mullins, R. Detels, N. Roth, J.-A.S. Passmore, S.E. Bradley, R. King, C. Latkin, S. Kandula, E. Wahome, D. Celentano, P. Goswami, B. Tee, A. Thiongo, K. Kaplan, J. Pienaar, M.W. Ross, P. Kaleebu, S. Chariyalertsak, K.F. Kelley, E. Valverde, Susan Scheer, M. Bhattacharya, J. Kinuthia, R. Brookmeyer, E. Mwamburi, A. Castel, G. Trapence, R. Helmy, G. Bicego, Carol El-Hayek, P. Chavez, E. Brown, C. Frangakis, E. Rodríguez-Nolasco, M. Colvin, Stefan Baral, A. Delgado-Borrego, J. Kessler, M.C. Weinstein, H. Shasulwe, B. Koblin, M. Magnus, W. Zhou, M.H. Watt, David Moore, J.B. Reed, C. Debaulieu, M.R. Jordan, F. Martinson, K. Nucifora, P.W. Young, L. Kayla, W. Matthews, M. Motamedi, J. Gweshe, B. El Omari, R. Ondondo, C. Kahlert, X. Cao, J. Okanda, G. Makana, V. Go, R. Colebunders, R. Simba, I. Hall, R. Bakker, P. Vernazza, D. Exner-Cortens, A. Brown, L. Kurtz, K.R. Amico, H. Ntalasha, R. Baggaley, N. Song, T. Aragon, R.S. Hogg, J. Nikisi, F. Mwanga, C. Shepard, O. Koole, K. Buchacz, P. Gonzales, A. Martin, B. Santos, D. Lewis, G. Anderson, C. Polis, S. Derendinger, K. Mayer, S. Vermund, A. Griffin, Samuel R. Friedman, M.S. Cohen, F.J. Muro, D. Patel, A. Sugarbaker, M. Musheke, C. Beyrer, C. Kwok, B.P. Yadav, J. Kaplan, R. Zulz, C. Mullis, R. Bailey, R. Dickson, T. Subramaniam, Katerina A. Christopoulos, K.A. Webb, J. Mbwambo, A. Phillips, M.A. Lampe, M. Muthui, R. Washington, T. Abdalla, J. Margolick, Matthew J. Mimiaga, Helen Rees, H.M.J.P. Vidanapathirana, R. Kamwi, Z. Yin, E.L. Frazier, M. Orkin, M. Beksinska, S.A. Strathdee, Andrea L. Wirtz, S. Elkamhawi, C. Soliman, T. Kerr, G. Pappas, Renee Heffron, S. Bachman, N. Forster, C. Mapanje, M. Goldstein, J. McMahon, P. Nair, J. Banda, M. Kall, R. Fichorova, Nelson K. Sewankambo, W. Zhu, D. Nicca, J.A. Moss, N. Habarta, E.J. Sanders, B. Riggan, P. Roberts, W. Heneine, D. Shabangu, J.L. Burgos, R. Ducharme, M. Toure, G.P. Garnett, R. Arafat, C. Ryan, E. Grapsa, P.M. Spittal, Kenneth Ngure, J. Waldura, M. Hosseinipour, N. Mensah, J. Ellard, T. Tang, R. Smith, J. Grund, R. Wood, Dean Murphy, M.-P. Sy, S. Gregson, R.A. Coutinho, D. Burns, Robert W. Coombs, N. Rafif, J.G. Hakim, S. Sahay, M.-L. Newell, M.L. Ngeruka, S.P. Fiorillo, C.-P. Pau, M. Decker, M. Getahun, E. Eduardo, L. Dumba, Joseph Makhema, T. Crea, J. Schillinger, Y. Jia, M. Sulkowski, Grace John-Stewart, F. Mbofana, Sam Phiri, N.B. Kiviat, B.P.X. Grady, V. Cambiano, T. Friel, David E Leslie, Y. Gebre, N. Muraguri, L. Valleroy, J. Skarbinski, P. Nadol, C. Kerr, T. Brewer, A. Ghani, M. Chen, L. Mills, S. Mital, C. Qiu, A.D. Paltiel, Janet J. Myers, C. van Gemert, R. Panchia, S. Agolory, A. Koler, P. Dietze, A. Jonas, N. Taruberekera, N. Philip, S.R. Nesheim, S. Tsui, J.P. Bitega, R. Abdool, C. Nekesa, J.G. Kahn, S. Townsell, S. Chan, A. Mujugira, V. Capo-Chichi, P. Rebeiro, Y. van Weert, J. Limba, K. Morrow, J. Birungi, E. Van Praag, L. Juárez-Figueroa, W. Miller, L.X. Deng, D. MacKellar, D. Kiima, V.D. Ojeda, P.L. Chu, S. Ohaga, J. Bradley, T. Sripaipan, C. Nguyen, R. Coutinho, E. Gardner, K.L. Vincent, A. Surendera Babu, A. Pharris, N. He, M. Maskew, S. Moses, A. Khan, H. Wang, M. Akello, Brandon O'Hara, J. Evans, D.E. Bennett, G.F. Webb, U. Abbas, C. Pretorius, M. Egger, R.S. Gupta, M. Mulenga, M. Odiit, C.E. Jones, M.F. Schim van der Loeff, I. Shaikh, A.D. Smith, D. Mark, G. Otieno, M. van Rooijen, T. Exner, A. Aghaizu, A. Vu, T. Ahmed, M. Wolverton, L. Seemann, Gustavo F. Doncel, A. Kharsany, C. Botao, J. Brown, J. Eaton, D. Krakower, J. Justman, Sheryl A. McCurdy, J. Otchere Darko, I. Denham, S. Fields, T. Taha, V. Jumbe, Z. Mwandi, K. Sey, T. Webster-León, M.A. Chiasson, W. Burman, E. Daniel, F. Deyounks, R. Willis, C. Kunzel, B. Greenberg, M. Lalota, B. George, R. Sitta, S. Abdool Karim, M. Kganakga, N. van der Knaap, S. Griffith, Z. Wu, C. del Rio, A. Briceno, R.P. Walensky, M.G. Anderson, Q. Vu Minh, R. Cabello, J.R.S. Malungo, H.J. Prudden, M. Mulatu, Y.Q. Chen, M.M. Baum, F. Mawazini, G. Phillips, B. Williams, F. van Aar, T. Noori, K. Curtis, L. Cluver, S. Huang, S. Safren, N. Westercamp, M. Pereyra, B. Nichols, L. Robertson, A. Oster, G. Kamanga, I. Butkyavichene, S. Ketende, W. Dothi, T. van de Laar, S. Bodika, L. Pang, S.J. de Vlas, B. Bearnot, M. Wallace, E. Duflo, F.M. Chimbwandira, L. Ramakrishnan, W. Kanjipite, A. Del Riego, S. Willis, S.L. Cherne, S. Merten, D. Hoover, A.K. Hesseling, E. Daniloff, K. Agot, L. Wang, Y. Ma, T. Heijman, Marie-Claude Boily, Susan Buchbinder, N. Luhmann, A.E. Phillips, D. Kamba, E. Op de Coul, L.M.R. Janini, M. Kolber, D. Reirden, G. Osorio, S.C. Kalichman, S. Combes, A. Auld, J. Rosenberger, H. Lin, A.S. de Vos, M. Paczkowski, E. Pouget, W. Davis, C. Mauck, M. Berry, S. Godbole, S. Mannheimer, N. Bock, C. Sexton, O. Whiteside, A. Bocour, S.K. Mohammed, J.G. Garcia-Lerma, T. Quinn, E. Losina, J.H.d.S. Pilotto, L. Werner, D. Newman, K. Russell, M. Chakela, S. Rowan, E. Wood, K.M. Mitchell, D. Novak, S. Rao, S. Roux, L. Ti, Edwin Were, J. Moss, G. Seage, A. Wongthanee, A. Muadinohamba, A. Crooks, X. Li, W. Motta, Noah Kiwanuka, M. McCauley, M.G. Rangel, G. Ravasi, B. Pick, T. West, R.N. Rimal, K. Bowa, J. Xu, P. Rhodes, J. Thorne, C. Avila, Michael S. Saag, E.A. Kelvin, A. Nqeketo, G.-M. Santos, H. El Rhilani, G.S. Gottlieb, N. Wang, S. Williams, I. Halldorsdottir, L.P. Jacobson, O. Mellouk, M. Sweat, L.R. Metsch, K. Sabin, S. Philip, S. Badal-Faesen, G. Sal y Rosas, D.H. Evans, R. Kumari, B. Tempalski, H.S. Okuku, I. Sanne, R.D. Moore, Y. Wang, A. Mbandi, S. Messinger, I. Balan, K. Kahuure, D. Kerrigan, J.J. van der Helm, D.L. Ellenberger, S.E. Kellerman, M. Sweeney, J. Opoku, H. Ginindza, D. Suryawanshi, N. Kikumbih, B.S. Parekh, J. Heffelfinger, C. Hart, B. Marshall, M. Jordan, O. Laeyendecker, O.N. Gill, S. Lee, G.R. Seage, C.-C. Udeagu, Travis Sanchez, J. White, J. Mwambi, J. Gilman, J. Talley, R. Baltussen, P. Galatowitsch, Kenneth H. Fife, T.R. Sterling, C. Mao, T. Frasca, A. Speksnijder, M. Nguyen Le, E. Dinenno, S. Kawichai, S. Hong, A. Gagner, L. Ouarsas, J. Goller, C. Watson, E. White, R. Monasch, N. Chotirosniramit, L. McNamara, D. van de Vijver, V. Hu, Sarah E. Rutstein, R. Glaubius, R.S. Paranjape, J. Peterson, P. Swain, Johnstone Kumwenda, Elizabeth A. Bukusi, F. Wabwire-Mangen, A. Buchanan, K.A. Freedberg, K. Shannon, J.C. Makoni, N. Rosenberg, J. Montaner, R. Koul, J. Zhang, E. Shihepo, J. Wang, H. Tran Vu, J.A. Smit, M. Sinunu, K. Chesang, G. Muzaaya, E.J. Schouten, V. Joseph, C. Karema, B.M. Ramesh, J.A.C. Hontelez, K. Torpey, G. Guillon, R. Taljaard, J. Elliott, R. Rao, D. Wilson, T.B. Hallett, Y.D. Mukadi, D.R. Holtgrave, K. Yotruean, M. Rasi, K.H. Mayer, M. Horberg, C. Chariyalertsak, C.-S. Leu, S. Billy, R. Lee, P. Suwannawong, Barrot H. Lambdin, R. Heimer, J. Tosswill, Marsha Rosengarten, A. Tripathi, M. Williams-Sherlock, C. Dolezal, M. Makhanya, A.T. Urbanus, C. Hendrix, C. Mwangi, P. Srikantiah, W. Jimbo, A. Puren, T. Smolskaia, M. Kamal, H. Li, G. Murphy, P. Masson, N. Benbow, E. Umar, A. Binagwaho, Papa Salif Sow, P. Lissouba, G. Olilo, P. Pathela, M. Mugavero, M. Cousins, S. Swindells, D. Callander, Z. Mabude, G. Cardenas, M.B. Klein, D. Sherard, C. Toohey, M. Holt, A. Pandey, D. Hedeker, Kimberly A. Powers, J. Astemborski, R. Gregg, M. Cribbin, Edith Nakku-Joloba, C. Furlow-Parmley, A. Abadie, Joseph J. Eron, D. Stéphanie, E. Kersh, P. Oyaro, P. Kohler, D.B. Hanna, H. Götz, H.I. Hall, S. Eshleman, K. Eritsyan, A. Carballo-Diéguez, G. Mujaranji, R. Needle, L. Lacroix, S. Singh, L. Wilton, J. Gallant, A. Howard, H.A. Pollack, J. Mermin, J. Schinkel, and S. Lovelace
- Subjects
medicine.medical_specialty ,030505 public health ,business.industry ,Gonorrhea ,Public Health, Environmental and Occupational Health ,Human immunodeficiency virus (HIV) ,Miami ,medicine.disease_cause ,medicine.disease ,Virology ,03 medical and health sciences ,Cross matching ,0302 clinical medicine ,Infectious Diseases ,Family medicine ,Medicine ,030212 general & internal medicine ,0305 other medical science ,business - Published
- 2012
- Full Text
- View/download PDF
14. Upside-down FETS
- Author
-
Anna W. Topol, J. Patel, D.J. Frnak, Steven E. Steen, D.C. La Tulipe, Jeffrey W. Sleight, and L. Ramakrishnan
- Subjects
Materials science ,business.industry ,Electrical engineering ,Silicon on insulator ,Hardware_PERFORMANCEANDRELIABILITY ,Transistor scaling ,Capacitance ,CMOS ,Hardware_INTEGRATEDCIRCUITS ,Optoelectronics ,Field-effect transistor ,business ,Hardware_LOGICDESIGN ,Communication channel ,Electronic circuit - Abstract
To address key challenges in transistor scaling [1,2], we have used 3D oxide bonding technology in a new way, to fabricate CMOS devices and circuits in which the gate is on the opposite side of the channel from the contacts between the FET and the first wiring level (Ml).
- Published
- 2008
- Full Text
- View/download PDF
15. Complexes of the lanthanides with neutral oxygen donor ligands
- Author
-
L. Ramakrishnan, D. K. Koppikar, P. V. Sivapullaiah, and S. Soundararajan
- Subjects
Lanthanide ,Chemistry ,Coordination number ,Inorganic chemistry ,Oxygen donor - Published
- 2007
- Full Text
- View/download PDF
16. Adiponectin correlates with obesity: A study of 159 childhood acute leukemia survivors from India
- Author
-
Richa Srivastava, Sameer Bakhshi, Anudishi Tyagi, Deepa Dhawan, L Ramakrishnan, and Atul Batra
- Subjects
Leptin ,Male ,medicine.medical_specialty ,Adolescent ,India ,Overweight ,Gastroenterology ,Body Mass Index ,Internal medicine ,medicine ,Humans ,Resistin ,Obesity ,Survivors ,Child ,Acute leukemia ,Adiponectin ,business.industry ,Myeloid leukemia ,Precursor Cell Lymphoblastic Leukemia-Lymphoma ,medicine.disease ,Leukemia ,Endocrinology ,Oncology ,Child, Preschool ,Female ,medicine.symptom ,business ,Body mass index - Abstract
Background: Acute lymphoblastic leukemia survivors are predisposed to obesity. However, the exact underlying mechanisms are not known. AIMS: The study was done to assess the role of biomarkers of obesity in acute leukemia survivors. Settings And Designs: This is a cross-sectional study conducted at All India Institute of Medical Sciences in survivors of acute leukemia who had completed treatment at least 1 year before enrollment in this study. Materials And Methods: Obesity was studied by determining the body mass index. Potential biomarkers were studied by assessing serum leptin, resistin, and adiponectin by enzyme-linked immunosorbant assay, and the results were compared in obese versus nonobese survivors. Statistical Analysis: Descriptive analysis for baseline demographic factors and Student's t -test for comparing the mean levels of biomarkers among the obese and nonobese survivors. Results: One hundred and fifty-nine acute leukemia patients were enrolled in this study with a median follow-up of 36.8 months. The median age was 10 (range: 3–18) years, and 123 (77.3%) patients were males. The overall prevalence of overweight/obesity was 26.4%, and this was similar in acute myeloid leukemia and acute lymphoblastic leukemia sub-groups (26.2% vs. 27.3%, P = 0.9). Mean serum leptin and resistin were similar in obese and nonobese leukemia survivors (3.7 vs. 2.85 pg/mL, P = 0.064; 8.01 vs. 9.33 ng/mL, P = 0.36). However, mean serum adiponectin was significantly lower in obese leukemia survivors (7.97 vs. 11.5 μg/mL, P = 0.023). Conclusions: Obese leukemic survivors had lower serum adiponectin levels than nonobese survivors. However, serum resistin and leptin levels were similar in the two groups.
- Published
- 2015
- Full Text
- View/download PDF
17. Measurement of cholesterol and triglycerides in dried serum and the effect of storage
- Author
-
L, Ramakrishnan, K S, Reddy, and B L, Jailkhani
- Subjects
Blood Specimen Collection ,Cholesterol ,Humans ,Reproducibility of Results ,Blood Chemical Analysis ,Triglycerides - Published
- 2001
18. Applications of gene fusions to green fluorescent protein and flow cytometry to the study of bacterial gene expression in host cells
- Author
-
R H, Valdivia and L, Ramakrishnan
- Subjects
Salmonella typhimurium ,Scyphozoa ,Macrophages ,Recombinant Fusion Proteins ,Genetic Vectors ,Green Fluorescent Proteins ,Flow Cytometry ,Transfection ,Artificial Gene Fusion ,Cell Line ,Luminescent Proteins ,Mice ,Genes, Bacterial ,Genes, Reporter ,Mycobacterium marinum ,Animals ,Promoter Regions, Genetic - Published
- 2000
19. Thermolabile methyltetrahydrofolate reductase associated with unusual venous and arterial thromboses
- Author
-
Lisa L. Ramakrishnan, Michael F. Leahy, and Tim N. Hall
- Subjects
Adult ,Male ,medicine.medical_specialty ,Hyperhomocysteinemia ,Homocysteine ,Gastroenterology ,Pathology and Forensic Medicine ,chemistry.chemical_compound ,Folic Acid ,Internal medicine ,medicine ,Coagulopathy ,Humans ,Thermolabile ,Vein ,Methylenetetrahydrofolate Reductase (NADPH2) ,Venous Thrombosis ,Oxidoreductases Acting on CH-NH Group Donors ,biology ,Vascular disease ,business.industry ,Thrombosis ,medicine.disease ,Surgery ,medicine.anatomical_structure ,chemistry ,Methylenetetrahydrofolate reductase ,biology.protein ,business - Abstract
We report a patient with unusual venous and arterial thromboses in association with the common thermolabile methyltetrahydrofolate (MTHFR) variant. The patient responded directly to folate supplementation. To our knowledge, this is the first report describing hyperhomocysteinemia in association with this type of thrombosis.
- Published
- 1999
20. A Cross-sectional Study of Sexual Practices, Sexually Transmitted Infections and Human Immunodeficiency Virus among Male-to-Female Transgender People
- Author
-
P.S. Saravanamurthy, P. Rajendran, Priya Maria Miranda, G. Ashok, Sai Subhasree Raghavan, Julia H. Arnsten, L. Ramakrishnan, S. Vijayakumar, P.S. Saravanamurthy, P. Rajendran, Priya Maria Miranda, G. Ashok, Sai Subhasree Raghavan, Julia H. Arnsten, L. Ramakrishnan, and S. Vijayakumar
- Abstract
Problem statement: Designing HIV interventions requires evidence on links between behaviors and elevated transmission risk that remains scanty for male-to-female Transgender (TG) people in India. Approach: In 2007, we carried out a cross-sectional study through convenience sampling of 131 TG aged > 18years, residing in Chennai at least prior to six months of the study. Sexual practices and perception towards STIs and HIV were identified through structured interviews. HIV and STIs were diagnosed from blood and urine samples. Associations among sexual practices, HIV/STI and alcohol use were analyzed using contingency tables. Results: The study participants had a mean age of sexual debut of 12.86 years. From the sample, 91% reported involvement with casual, paid and/or long-term sex partners at the time of the study and reported having anal sex in similar proportions across all three types of partners. More individuals failed to use condoms with long-term partners (44%) than with casual (17%) or paid (9%) partners. Alcohol use was more strongly associated with multiple casual and paid partners than with exclusive long-term partners (p<0.05). About 29% reported sex under the influence of alcohol. 72% were diagnosed with least one STI, with viral STIs ranging from 8-48 and 18% diagnosed with HIV. HIV-positive individuals could not be statistically distinguished from HIV-negative individuals on the basis of anal and oral sex, presence/absence of STI, inconsistent condom use or sex under the influence of alcohol. Conclusion/Recommendations: Given the extensive literature on associations between inconsistent condom use, unprotected anal sex, alcohol and HIV risk, the lack of difference between HIV-positive and negative individuals with respect to behaviors suggests that the entire sample represents a group needing primary or secondary prevention intervention. Partner reduction, consistent condom usage and sex under the influence of alcohol
- Published
- 2010
21. Images in clinical medicine. Mycobacterium marinum infection of the hand
- Author
-
L, Ramakrishnan
- Subjects
Adult ,Mycobacterium Infections ,Humans ,Female ,Skin Diseases, Bacterial ,Mycobacterium - Published
- 1997
22. S72 RAGE Activation and Endothelial Cell Injury Associated with Cardiopulmonary Bypass
- Author
-
L Ramakrishnan, Anne Burke-Gaffney, Meera Patel, Mark J.D. Griffiths, Benedict C. Creagh-Brown, and T Svermova
- Subjects
Pulmonary and Respiratory Medicine ,medicine.medical_specialty ,business.industry ,Inflammation ,medicine.disease ,Umbilical vein ,RAGE (receptor) ,Endothelial stem cell ,Endocrinology ,In vivo ,Internal medicine ,Immunology ,medicine ,Tumor necrosis factor alpha ,Endothelial dysfunction ,medicine.symptom ,business ,Receptor - Abstract
Introduction and objectives The systemic inflammatory response syndrome (SIRS) which complicates most cases of surgery necessitating cardiopulmonary bypass (snCPB) is associated with endothelial cell injury and activation of the receptor for advanced glycation end products (RAGE). We hypothesised that RAGE activation leads to endothelial cell damage and that plasma levels of RAGE ligands, S100A8/A9 and S100A12, increased following snCPB will be positively associated with raised plasma syndecan-1 shed from damaged endothelial cells. We also hypothesised that S100 proteins and for comparison TNFα directly modulate syndecan-1 expression in cultured endothelial cells. Methods Enzyme-linked immunosorbent assay measurements of syndecan-1, S100A8/A9 and S100A12 in plasma samples collected from patients pre- and post-snCPB (n=12); real-time-PCR determination of syndecan-1 expression and the house-keeping gene, GAPDH, in human umbilical vein endothelial cells (HUVEC) following incubation with TNFα (20ng/ml), S100A8/A9 (2µg/ml) and S100A12 (2µg/ml) for 3 to 24h. Results Plasma levels of syndecan-1, S100A12 and S100A8/A9 levels increased following snCPB. Post-snCPB levels of syndecan-1 (86.1±16.2ng/ml) correlated, positively (r2=0.437, p=0.019; and r2=0.729, p=0.0004, respectively) with post-snCPB levels of S100A8/A9 (4.5±0.6ng/ml) and S100A12 (92.9±22.8ng/ml). In cultured HUVEC, TNFα significantly (p Conclusion A positive association between post-operative plasma levels of RAGE ligands, S100A8/A9 and S100A12, and syndecan-1 is suggestive of a link between RAGE activation and endothelial injury, key feature of SIRS following snCPB. However, in cultured endothelial cells only TNFα and not S100A8/A9 or S100A12 decreased syndecan-1 mRNA expression; where decreased expression is indicative of reduced endothelial protective function. Possible explanations for the differences with S100A8/A9 and S100A12 in vivo and in vitro are that effects on syndecan-1 shedding in patients undergoing snCPB are indirect; and/or that in vitro, pre-activation of endothelial cells is required to up-regulate RAGE expression in order for S100 proteins to modulate syndecan-1 expression. These questions are the subject of on-going studies into the role of RAGE activation in endothelial dysfunction in SIRS.
- Published
- 2012
- Full Text
- View/download PDF
23. 51 MYCOBACTERIUM 19 KDA LIPOPROTEIN IS NOT REQUIRED FOR APOPTOSIS IN VIVO
- Author
-
M. N. Paddock, K. Graef, H. Clay, C. L. Cosma, and L. Ramakrishnan
- Subjects
General Medicine ,General Biochemistry, Genetics and Molecular Biology - Published
- 2006
- Full Text
- View/download PDF
24. 345 MODELING MYCOBACTERIUM TUBERCULOSIS INFECTION IN FISH AND FROGS
- Author
-
S. E. Mahoney, H. F. McGraw, and L. Ramakrishnan
- Subjects
Mycobacterium tuberculosis ,biology ,Zoology ,%22">Fish ,General Medicine ,biology.organism_classification ,General Biochemistry, Genetics and Molecular Biology - Published
- 2004
- Full Text
- View/download PDF
25. Modeling Mycobacterium Tuberculosis Infection in Fish and Frogs
- Author
-
H. F. McGraw, S. E. Mahoney, and L. Ramakrishnan
- Subjects
Mycobacterium tuberculosis ,biology ,%22">Fish ,Zoology ,General Medicine ,biology.organism_classification ,General Biochemistry, Genetics and Molecular Biology - Published
- 2001
- Full Text
- View/download PDF
26. Komplexe von 2,6-Dimethylpyridin-1-oxid mit Lanthanidjodiden
- Author
-
S. Soundararajan and L. Ramakrishnan
- Subjects
Lanthanide ,chemistry.chemical_compound ,chemistry ,Infrared ,Inorganic chemistry ,Polymer chemistry ,Conductance ,General Chemistry ,Amine oxide - Abstract
Complexes of 2,6-dimethylpyridine 1-oxide with lanthanide iodides of the formulaeLn(2,6-LTNO)5I3 whereLn=La, Tb and Yb,Ln(2,6-LTNO)4I3 whereLn=Pr and Nd and Er(2,6-LTNO)4.5I3 have been prepared and characterised by chemical analysis, infrared and conductance studies. Infrared and conductance data have been interpreted in terms of dimeric (or polymeric) structures involving bridging amine oxide groups.
- Published
- 1977
- Full Text
- View/download PDF
27. Nuclear quadrupole resonance in coordination compounds
- Author
-
J. Ramakrishna, S. Soundararajan, L. Ramakrishnan, and V. S. S. Sastry
- Subjects
Inorganic Chemistry ,chemistry.chemical_classification ,Electron nuclear double resonance ,Nuclear magnetic resonance ,chemistry ,Materials Chemistry ,Physical and Theoretical Chemistry ,Nuclear quadrupole resonance ,Coordination complex - Published
- 1977
- Full Text
- View/download PDF
28. Pyridine-1-oxide complexes of lanthanide iodides
- Author
-
L. Ramakrishnan and S. Soundararajan
- Subjects
Lanthanide ,Square antiprismatic molecular geometry ,Infrared ,Chemistry ,Ligand ,Inorganic chemistry ,Oxide ,General Chemistry ,Metal ,Crystallography ,chemistry.chemical_compound ,visual_art ,Pyridine ,visual_art.visual_art_medium ,Proton NMR - Abstract
Pyridine-1-oxide complexes of lanthanide iodides of the formulaLn(PyO)8I3 whereLn=La, Pr, Nd, Tb, Dy, Er, and Yb have been prepared and characterised by analyses, molecular weight, conductance, infrared and proton NMR data. Proton NMR and IR data have shown the coordination of the ligand to the metal through the oxygen atom of the N–O group. NMR data have been interpreted in terms of a distorted square antiprismatic geometry in solution.
- Published
- 1975
- Full Text
- View/download PDF
29. Komplexe von Lanthanidnitraten mit 2-Methylpyridin-1-oxid
- Author
-
L. Ramakrishnan and S. Soundararajan
- Subjects
Lanthanide ,Denticity ,Chemistry ,Ligand ,Inorganic chemistry ,chemistry.chemical_element ,Conductance ,General Chemistry ,Oxygen ,Metal ,Crystallography ,chemistry.chemical_compound ,Nitrate ,visual_art ,visual_art.visual_art_medium ,Spectral data - Abstract
Complexes of lanthanide nitrates with 2-methylpyridine-1-oxide of the formuleLn(2-MePyO)3(NO3)3 whereLn=Nd, Sm, Tb, Dy and Yb and La(2-MePyO)3(NO3)3·2H2O have been prepared and characterized by chemical analyses, IR spectral, conductance andDTA data. IR spectral data have been interpreted in terms of the coordination of the ligand to the metal through the oxygen of the N−O group. Conductance and IR spectral data show that all the nitrate groups are bidentate and that two of the nitrate groups are bound to the metal in a different manner than the other.
- Published
- 1976
- Full Text
- View/download PDF
30. Studies in the Host-Parasite Relations of Blast Disease of Rice
- Author
-
L. Ramakrishnan
- Subjects
Physiology ,Host (biology) ,Botany ,Genetics ,Parasite hosting ,Plant Science ,Biology ,Agronomy and Crop Science ,Blast disease ,Microbiology - Published
- 1966
- Full Text
- View/download PDF
31. Implementation of placement and routing algorithms for computer aided design of printed circuit boards
- Author
-
L. Ramakrishnan, Lalit M. Patnaik, and B. A. Gadkari
- Subjects
business.industry ,Page layout ,Computer science ,Circuit design ,General Engineering ,Hardware_PERFORMANCEANDRELIABILITY ,computer.software_genre ,Computer Graphics and Computer-Aided Design ,Human-Computer Interaction ,Printed circuit board ,Plotter ,Package on package ,Hardware_INTEGRATEDCIRCUITS ,Computer Aided Design ,Physical design ,business ,computer ,IC layout editor ,Computer hardware ,Computer Science & Automation - Abstract
The Printed Circuit Board (PCB) layout design is one of the most important and time consuming phases during equipment design process in all electronic industries. This paper is concerned with the development and implementation of a computer aided PCB design package. A set of programs which operate on a description of the circuit supplied by the user in the form of a data file and subsequently design the layout of a double-sided PCB has been developed. The algorithms used for the design of the PCB optimise the board area and the length of copper tracks used for the interconnections. The output of the package is the layout drawing of the PCB, drawn on a CALCOMP hard copy plotter and a Tektronix 4012 storage graphics display terminal. The routing density (the board area required for one component) achieved by this package is typically 0.8 sq. inch per IC. The package is implemented on a DEC 1090 system in Pascal and FORTRAN and SIGN(1) graphics package is used for display generation.
- Published
- 1984
32. ChemInform Abstract: PYRIDINE-1-OXIDE COMPLEXES OF LANTHANIDE IODIDES
- Author
-
L. Ramakrishnan and S. Soundararajan
- Subjects
Lanthanide ,Square antiprismatic molecular geometry ,Infrared ,Chemistry ,Ligand ,Oxide ,General Medicine ,Metal ,chemistry.chemical_compound ,Crystallography ,visual_art ,Pyridine ,visual_art.visual_art_medium ,Proton NMR - Abstract
Pyridine-1-oxide complexes of lanthanide iodides of the formulaLn(PyO)8I3 whereLn=La, Pr, Nd, Tb, Dy, Er, and Yb have been prepared and characterised by analyses, molecular weight, conductance, infrared and proton NMR data. Proton NMR and IR data have shown the coordination of the ligand to the metal through the oxygen atom of the N–O group. NMR data have been interpreted in terms of a distorted square antiprismatic geometry in solution.
- Published
- 1975
- Full Text
- View/download PDF
33. ChemInform Abstract: QUINOLINE 1-OXIDE COMPLEXES OF LANTHANIDE IODIDES
- Author
-
S. Soundararajan and L. Ramakrishnan
- Subjects
Lanthanide ,chemistry.chemical_compound ,chemistry ,Quinoline ,Oxide ,Organic chemistry ,General Medicine - Published
- 1977
- Full Text
- View/download PDF
34. ChemInform Abstract: COMPLEXES OF LANTHANIDE NITRATES WITH 2-METHYLPYRIDINE 1-OXIDE
- Author
-
L. Ramakrishnan and S. Soundararajan
- Subjects
Lanthanide ,chemistry.chemical_compound ,chemistry ,Polymer chemistry ,Oxide ,2-Methylpyridine ,General Medicine - Published
- 1977
- Full Text
- View/download PDF
35. ChemInform Abstract: COMPLEXES OF 2,6-DIMETHYLPYRIDINE 1-OXIDE WITH LANTHANIDE IODIDES
- Author
-
L. Ramakrishnan and S. Soundararajan
- Subjects
Lanthanide ,chemistry.chemical_compound ,Chemistry ,Polymer chemistry ,Oxide ,General Medicine - Published
- 1977
- Full Text
- View/download PDF
36. Nuclear Quadrupole Resonance in Coordination Chemistry. Identification of Bridging and Terminal Chlorines in the Mercuric Chloride-4-picoline N-Oxide Complex
- Author
-
V. S. S. Sastry, J Ramakrishna, S. Soundararajan, and L. Ramakrishnan
- Subjects
chemistry.chemical_classification ,Reaction mechanism ,Chemistry ,Supramolecular chemistry ,General Chemistry ,Crystal structure ,Chloride ,Coordination complex ,Crystallography ,chemistry.chemical_compound ,Ionic liquid ,polycyclic compounds ,medicine ,Physical chemistry ,Picoline ,Nuclear quadrupole resonance ,medicine.drug - Abstract
The temperature dependence of the chlorine-35 n.q.r. in the mercuric chloride-4-picoline N-oxide complex has been studied from 77 K to room temperature, and the results are used to assign the observed frequencies to terminal and bridging chlorines.
- Published
- 1979
- Full Text
- View/download PDF
37. Effect of Storage on the Rate of Incorporation of Uridine into Ribonucleic Acid by Germinating Uredospores
- Author
-
L. Ramakrishnan
- Subjects
chemistry.chemical_compound ,chemistry ,Biochemistry ,Germination ,RNA ,Plant Science ,Biology ,Agronomy and Crop Science ,Uridine - Published
- 1971
- Full Text
- View/download PDF
38. Membrane-Bound Ribosomes in Germinated Uredospores
- Author
-
Z. Yaniv, L. Ramakrishnan, and R. C. Stapl. Es
- Subjects
Membrane bound ,Germination ,Botany ,Plant Science ,Biology ,Agronomy and Crop Science ,Ribosome - Published
- 1970
- Full Text
- View/download PDF
39. Changes in Ribonucleic Acids during Uredospore Differentiation
- Author
-
R. C. Staples and L. Ramakrishnan
- Subjects
Messenger RNA ,Biochemistry ,Germination ,Nucleic acid ,RNA ,Plant Science ,Biology ,Agronomy and Crop Science ,Microbiology ,Spore - Published
- 1970
- Full Text
- View/download PDF
40. Response to 'Rethinking latent TB? Think again'.
- Author
-
Behr MA, Edelstein PH, and Ramakrishnan L
- Published
- 2025
- Full Text
- View/download PDF
41. Postnatal Growth Trajectories and Risk of Obstructive Sleep Apnea in Middle Age: A Cohort Study.
- Author
-
Suri TM, Bhargava S, Akshara KT, Sinha S, Aggarwal V, Gupta KD, Singh G, Singh B, Ramakrishnan L, Osmond C, Fall CHD, Bhargava SK, and Sachdev HS
- Subjects
- Humans, Female, Male, Adult, Infant, Child, Preschool, Risk Factors, Child, Infant, Newborn, Cohort Studies, India epidemiology, Obesity epidemiology, Obesity complications, Middle Aged, Sleep Apnea, Obstructive epidemiology, Body Mass Index
- Abstract
Study Objectives: Rapid growth in childhood predisposes to obesity and cardiometabolic diseases in adulthood. While obstructive sleep apnea (OSA) is bidirectionally linked to obesity, its developmental origins are sparsely studied. We examined associations between postnatal growth and the risk of OSA in adulthood., Methods: We included adults whose childhood anthropometric data was collected in the New Delhi Birth Cohort study. The risk of OSA was defined by the Berlin Questionnaire (BQ) with and without the obesity criterion. Using logistic regression, we studied associations of OSA risk with conditional growth parameters, which are statistically independent measures of gain in height, weight, and body mass index (BMI), during infancy (0-2 years), early childhood (2-5 years), and late childhood (5-11 years)., Results: Among 521 subjects (58.9% males) with a mean (SD) age of 40.9 (1.7) years, 30.9% had a high risk of OSA. On multivariate analysis, a high risk of OSA was associated with a higher conditional BMI in infancy (odds ratio: 1.25; 95% confidence interval: 1.00-1.57; p = 0.048) and early childhood (1.35; 1.07-1.69; p = 0.011). Higher risk of OSA was associated with greater conditional weight in early childhood (1.34; 1.06-1.68; p = 0.013). Using the modified BQ definition without obesity, adult risk of OSA was significantly associated with a higher adult BMI instead of childhood conditional BMIs., Conclusions: Greater gain in conditional BMI or weight in early childhood is associated with a high risk of OSA in middle age, which is mediated by a higher attained adult BMI., (© 2024 Wiley Periodicals LLC.)
- Published
- 2025
- Full Text
- View/download PDF
42. Furosemide stress test to predict acute kidney injury progression in critically ill children.
- Author
-
Krishnasamy S, Sinha A, Lodha R, Sankar J, Tarik M, Ramakrishnan L, Bagga A, and Hari P
- Subjects
- Humans, Male, Child, Female, Adolescent, Child, Preschool, Infant, Disease Progression, Diuretics therapeutic use, Predictive Value of Tests, Enkephalins, Protein Precursors, Furosemide therapeutic use, Furosemide administration & dosage, Acute Kidney Injury diagnosis, Acute Kidney Injury etiology, Acute Kidney Injury blood, Acute Kidney Injury urine, Critical Illness, Biomarkers blood, Biomarkers urine, Lipocalin-2 urine, Lipocalin-2 blood
- Abstract
Background: Furosemide stress test (FST) is a novel functional biomarker for predicting severe acute kidney injury (AKI); however, pediatric studies are limited., Methods: Children 3 months to 18 years of age admitted to the intensive care unit (ICU) of a tertiary care hospital from Nov 2019 to July 2021 were screened and those who developed AKI stage 1 or 2 within 7 days of admission underwent FST (intravenous furosemide 1 mg/kg). Urine output was measured hourly for the next 6 h; a value > 2 ml/kg within the first 2 h was deemed furosemide responsive. Other biomarkers like plasma neutrophil gelatinase-associated lipocalin (NGAL) and proenkephalin (PENK) were also evaluated., Results: Of the 480 admitted patients, 51 developed AKI stage 1 or 2 within 7 days of admission and underwent FST. Nine of these patients were furosemide non-responsive. Thirteen (25.5%) patients (eight of nine from FST non-responsive group) developed stage 3 AKI within 7 days of FST, nine (17.6%) of whom (seven from non-responsive group) required kidney support therapy (KST). FST emerged as a good biomarker for predicting stage 3 AKI and need for KST with area-under-the-curve (AUC) being 0.93 ± 0.05 (95% CI 0.84-1.0) and 0.96 ± 0.03 (95% CI 0.9-1.0), respectively. FST outperformed NGAL and PENK in predicting AKI stage 3 and KST; however, the combination did not improve the diagnostic accuracy., Conclusions: Furosemide stress test is a simple, inexpensive, and robust biomarker for predicting stage 3 AKI and KST need in critically ill children. Further research is required to identify the best FST cut-off in children., Competing Interests: Declarations. Consent to participate and publish the data: The authors affirm that human research participants provided informed consent to participate in the study and publish the data. Ethics approval: The study was approved by the Institute Ethics Committee (IECPG-590/24.10.2019, RT-15/28.11.2019, titled “Furosemide stress test in predicting progression to AKI stage III in children admitted to the ICU with early stages of AKI”). Conflict of interest: The authors declare no competing interests., (© 2024. The Author(s), under exclusive licence to International Pediatric Nephrology Association.)
- Published
- 2025
- Full Text
- View/download PDF
43. An Image Processing Tool for Automated Quantification of Bacterial Burdens in Zebrafish Larvae.
- Author
-
Yamaguchi N, Otsuna H, Eisenberg-Bord M, and Ramakrishnan L
- Abstract
Zebrafish larvae are used to model the pathogenesis of multiple bacteria. This transparent model offers the unique advantage of allowing quantification of fluorescent bacterial burdens (fluorescent pixel counts [FPC]) in vivo by facile microscopical methods, replacing enumeration of bacteria using time-intensive plating of lysates on bacteriological media. Accurate FPC measurements require laborious manual image processing to mark the outside borders of the animals so as to delineate the bacteria inside the animals from those in the culture medium that they are in. Here, we have developed an automated ImageJ/Fiji-based macro that accurately detects the outside borders of Mycobacterium marinum -infected larvae.
- Published
- 2024
- Full Text
- View/download PDF
44. The hepcidin-ferroportin axis influences mitochondrial function, proliferation, and migration in pulmonary artery endothelial and smooth muscle cells.
- Author
-
Issitt T, Toe QK, Pedersen SL, Shackshaft T, Ghazaly MM, West L, Arnold ND, Mahomed A, Kagugube GW, Ramakrishnan L, Lawrie A, Quinlan GJ, and Wort SJ
- Abstract
Elevated circulating hepcidin levels have been reported in patients with pulmonary artery hypertension (PAH). Hepcidin has been shown to promote proliferation of human pulmonary artery smooth muscle cells (PASMCs) in vitro, suggesting a potential role in PAH pathogenesis. However, the role of human pulmonary artery endothelial cells (PAECs) as either a source of hepcidin, or the effect of hepcidin on PAEC function is not as well described. The objective of this study was to define the role of the hepcidin-ferroportin axis on the phenotype of PAEC and to study potential PAEC-PASMC interactions relevant to the pathogenesis of pulmonary vascular remodeling and PAH. PAECs treated with hepcidin, or interleukin-6 were investigated for both ferroportin and hepcidin release and regulation using immunofluorescence, mRNA levels and cellular release assays. Effects of hepcidin on PASMC and PAEC mitochondrial function was investigated using immunofluorescence and seahorse assay. Migration and proliferation of PASMCs treated with conditioned media from hPAEC treated with hepcidin was investigated using the xCELLigence system and other tools. We demonstrate in this study that PAECs express ferroportin; hepcidin treatment of PAECs resulted in mitochondrial iron accumulation and intracellular hepcidin biosynthesis and release. Conditioned media from hepcidin treated PAECs caused PASMCs to down-regulate ferroportin expression whilst promoting migration and proliferation. Inhibition of hepcidin in PAEC conditioned media limited these responses. PASMC cellular and mitochondrial iron retention are associated with migratory and proliferative responses. This study confirms that the hepcidin ferroportin axis is present and operational in PAECs. Modulation of this axis shows distinct differences in responses seen between PAECS and PASMCs. Stimulation of this axis in PAECs with hepcidin may well institute proliferative and migratory responses in PASMCs of relevance to pathogenesis of PAH offering potential novel therapeutic targets., Competing Interests: The authors declare no conflict of interests., (© 2024 The Authors. Pulmonary Circulation published by Wiley Periodicals LLC on behalf of the Pulmonary Vascular Research Institute.)
- Published
- 2024
- Full Text
- View/download PDF
45. Sarcopenic obesity in survivors of childhood acute lymphoblastic leukemia: prevalence, risk factors, and implications for cancer survivors.
- Author
-
Das G, Setlur K, Jana M, Ramakrishnan L, Jain V, Meena JP, Gupta AK, Dwivedi S, and Seth R
- Subjects
- Humans, Male, Female, Cross-Sectional Studies, Child, Adolescent, Risk Factors, Prevalence, Body Composition, Insulin Resistance, Precursor Cell Lymphoblastic Leukemia-Lymphoma complications, Precursor Cell Lymphoblastic Leukemia-Lymphoma epidemiology, Sarcopenia epidemiology, Sarcopenia etiology, Cancer Survivors statistics & numerical data, Obesity epidemiology, Obesity complications, Absorptiometry, Photon methods
- Abstract
Purpose: Sarcopenic obesity, characterized by increased adiposity with low skeletal muscle mass, contributes to frailty and the development of chronic disease. Data on sarcopenic obesity in survivors of childhood acute lymphoblastic leukemia (cALL) is limited., Methodology: A cross-sectional study on 65 cALL survivors (7-18 years, > 2 years from treatment completion) was conducted on cALL survivors with the primary outcome to determine the prevalence of sarcopenic obesity. Sarcopenic obesity was defined as patients with a positive Fat Mass Index (FMI) z-score with a negative Skeletal Muscle Index (SMI) z-score, measured using a Dual-Energy Xray Absorptiometry (DXA) scan. In addition, we assessed the factors associated with sarcopenic obesity by multivariable regression analysis., Results: The mean (± SD) age was 12.9 (± 3.2) years, the median (Interquartile Range) time since diagnosis was 6.5 (5.9;8) years, and 66% received cranial radiotherapy. Central obesity, insulin resistance, and metabolic syndrome were seen in 21.5%, 23.1%, and 21% respectively. DXA-derived body composition variables revealed higher fat percentage despite normal body mass index (BMI) and lower muscle mass compared to the general population. Sarcopenic obesity was seen in 21 (34%) of survivors. On multivariable regression analysis, age at diagnosis (OR: 0.95 (95% CI: 0.92-0.98), p = 0.02), central obesity (OR: 18.99 (95% 2.32-155.5), p = 0.006) and insulin resistance (OR: 10.2 (95% CI: 1.75-59.09), p = 0.01) were associated with sarcopenic obesity., Conclusions: Sarcopenic obesity, an early clinical indicator for metabolic disease despite normal BMI, was significantly worse in children diagnosed with ALL at a younger age and was associated with central obesity and insulin resistance, which may contribute to adverse outcomes later in life., Competing Interests: Declarations. Ethics: Ethics approval was taken by the AIIMS-New Delhi Ethics Committee for Post-Graduate Research vide Ref-no: IECPG-628/28.11.2019, RT-08/19.12.2019, and the research was conducted per the ethical guidelines laid down by the Helsinki Declaration. Consent to participate: Written informed consent was obtained from the parents and children provided assent (verbal and written) wherever necessary. Consent to publish: Not applicable. Competing interests: The authors declare no competing interests., (© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
- Published
- 2024
- Full Text
- View/download PDF
46. Beyond the bench: LGBTQ+ health equity after India's "no same-sex marriage" verdict.
- Author
-
Weiss Goitiandia S, Agarwal A, Banerjee SC, Bhoo-Pathy N, Bose C, Chittem M, Gursahani R, Ramakrishnan L, Rana S, Salins N, Segarmurthy MV, Thiyam A, and Rosa WE
- Abstract
LGBTQ+ people (e.g., lesbian, gay, bisexual, transgender, and queer or questioning people) experience systemic marginalisation and discrimination globally and throughout India. In October 2023, the Indian Supreme Court rejected the legal recognition of same-sex marriage, blocking marriage equality for LGBTQ+ people and contending that the right to marry neither qualifies as a fundamental right accorded by the Indian Constitution nor falls under the Supreme Court's purview. Although the Supreme Court declared opposition to discrimination based on sexual orientation, its failure to recognise same-sex marriage legally is a substantial obstruction to full LGBTQ+ equality. We propose that the refusal of the Indian legal system to honour same-sex marriage while calling for an end to societal violence and discriminatory behaviour against the LGBTQ+ community is inherently flawed and counterintuitive. Informed by our team's multidisciplinary orientation as healthcare professionals, researchers, and advocates, we delineate explicit challenges that LGBTQ+ people in India may encounter due to the Supreme Court's recent ruling. We subsequently put forth a series of interprofessional and intersectoral recommendations to mitigate this decision's immediate and long-term consequences, providing an actionable path toward LGBTQ+ inclusion, justice, and equity in India., Competing Interests: SCB and WER are both partially funded by 10.13039/100000054NCI/10.13039/100000002NIH Comprehensive Cancer Centre award number P30 CA008748. The authors have no other conflicts of interest to disclose., (© 2024 The Author(s).)
- Published
- 2024
- Full Text
- View/download PDF
47. Automated annotation of scientific texts for ML-based keyphrase extraction and validation.
- Author
-
Amusat OO, Hegde H, Mungall CJ, Giannakou A, Byers NP, Gunter D, Fagnan K, and Ramakrishnan L
- Subjects
- Metadata, Machine Learning, Data Curation methods, Data Mining methods
- Abstract
Advanced omics technologies and facilities generate a wealth of valuable data daily; however, the data often lack the essential metadata required for researchers to find, curate, and search them effectively. The lack of metadata poses a significant challenge in the utilization of these data sets. Machine learning (ML)-based metadata extraction techniques have emerged as a potentially viable approach to automatically annotating scientific data sets with the metadata necessary for enabling effective search. Text labeling, usually performed manually, plays a crucial role in validating machine-extracted metadata. However, manual labeling is time-consuming and not always feasible; thus, there is a need to develop automated text labeling techniques in order to accelerate the process of scientific innovation. This need is particularly urgent in fields such as environmental genomics and microbiome science, which have historically received less attention in terms of metadata curation and creation of gold-standard text mining data sets. In this paper, we present two novel automated text labeling approaches for the validation of ML-generated metadata for unlabeled texts, with specific applications in environmental genomics. Our techniques show the potential of two new ways to leverage existing information that is only available for select documents within a corpus to validate ML models, which can then be used to describe the remaining documents in the corpus. The first technique exploits relationships between different types of data sources related to the same research study, such as publications and proposals. The second technique takes advantage of domain-specific controlled vocabularies or ontologies. In this paper, we detail applying these approaches in the context of environmental genomics research for ML-generated metadata validation. Our results show that the proposed label assignment approaches can generate both generic and highly specific text labels for the unlabeled texts, with up to 44% of the labels matching with those suggested by a ML keyword extraction algorithm., (© The Author(s) 2024. Published by Oxford University Press.)
- Published
- 2024
- Full Text
- View/download PDF
48. Comparison of ultrasound-guided erector spinae plane block versus transmuscular quadratus lumborum block for postoperative analgesia after caesarean delivery: A prospective randomized non-inferiority clinical trial.
- Author
-
Joshi R, Jeevan R, Amutha SV, Ramakrishnan L, and Natarajan NR
- Abstract
Background and Aims: Regional techniques are a part of multimodal analgesia following cesarean delivery. Cesarean delivery warrants a regional technique, which can provide somatic and visceral analgesia-like quadratus lumborum block (QLB) and erector spinae plane block (ESPB). In this study, we investigated the non-inferiority of ESPB at T12 and transmuscular-QLB (TQLB) at L2-L3 for postoperative analgesia in cesarean delivery., Material and Methods: In this prospective, randomized, non-inferiority trial, 124 patients undergoing cesarean delivery were enrolled to receive bilateral TQLB or ESPB with 20 mL of 0.25% ropivacaine on each side. All patients received prophylactic acetaminophen and ketorolac for 2 days. Our primary objective was to compare the total tramadol consumption in the first 48 h between the two groups. Secondary objectives were to compare cumulative tramadol consumption, postoperative Numeric Rating Scale (NRS) score at rest, and with movement at various time points, the time for first rescue analgesic requirement, development of complications related to the block, and patient satisfaction with analgesia between the two groups., Results: The total tramadol consumption in 48 h (47.3 ± 34.9 mg in ESPB and 50.9 ± 38.7 mg in TQLB), duration of first rescue analgesic (22.8 ± 15.8 h in ESPB and 22.7 ± 15.6 h in TQLB), and patient satisfaction were similar between the two groups. Both groups had similar pain scores except at rest at 6 h and on movement at 4 h, 6 h, and 36 h, whereas the ESPB group had lower NRS scores ( P < 0.05)., Conclusion: The analgesic effect of bilateral ESPB at T12 was non-inferior to that of bilateral TQLB post-caesarean delivery., Competing Interests: There are no conflicts of interest., (Copyright: © 2024 Journal of Anaesthesiology Clinical Pharmacology.)
- Published
- 2024
- Full Text
- View/download PDF
49. Linking Non-alcoholic Fatty Liver Disease Severity With Metabolic Syndrome Features: An Integrative Study on Clinical and Radiological Fronts.
- Author
-
Sukumar M, Vikram NK, Ranjan P, Pandey M, Bhalla AS, Ramakrishnan L, Javed D, Malhotra V, Prasad R, and Mittal G
- Abstract
Introduction Non-alcoholic fatty liver disease (NAFLD) has become a widespread cause of chronic liver disease, ranging from simple steatosis to severe conditions like non-alcoholic steatohepatitis (NASH) and cirrhosis. Despite its similarity to alcohol-induced liver damage, NAFLD affects individuals with no significant alcohol consumption. This study explores the association between NAFLD, bone mineral density (BMD), insulin resistance, and subclinical inflammation, focusing on the Asian Indian population. The primary objective was to investigate the relationship between NAFLD and BMD, insulin levels, and markers of subclinical inflammation, hypothesizing that patients with NAFLD exhibit lower BMD, possibly linked to insulin resistance and inflammation. Methodology A cross-sectional study with 100 subjects aged 18-50 years (50 cases with NAFLD and 50 controls) was conducted. Exclusion criteria included excessive alcohol consumption, drug-induced fatty liver, severe organ dysfunction, infections, pregnancy, and acute or chronic illness. Data were collected through clinical examinations, anthropometric measurements, biochemical investigations, ultrasound diagnosis of NAFLD, and dual-energy X-ray absorptiometry (DEXA) scans for BMD assessment. Statistical analysis employed the chi-squared tests, t-tests, and Wilcoxon rank-sum tests. Results NAFLD patients had higher body mass index (BMI), waist-to-hip ratio, and markers of insulin resistance and inflammation compared to non-NAFLD controls. DEXA scans revealed significantly lower BMD in NAFLD cases, along with a higher prevalence of osteopenia. Positive correlations were observed between BMD and insulin resistance. The study contributes to understanding the link between NAFLD and lower BMD in the Asian Indian population, emphasizing the impact of insulin resistance and inflammation on bone health. The literature review supports the relevance of exploring NAFLD as an independent risk factor for low BMD. Conclusion This case-control study underscores the significant association between NAFLD and lower BMD in the Asian Indian population. Despite limitations, the findings highlight the importance of further research with larger samples and comprehensive assessments to elucidate the interplay between NAFLD, metabolic factors, and bone health., Competing Interests: The authors have declared that no competing interests exist., (Copyright © 2024, Sukumar et al.)
- Published
- 2024
- Full Text
- View/download PDF
50. Establishing Apolipoprotein-B and non-high-density-lipoprotein-C goals in Indian population: A Cross-sectional study.
- Author
-
Berry P, Amarchand R, Ramakrishnan L, Gupta R, Kondal D, Bharadiya V, Krishnan A, Tandon N, Prabhakaran D, and Roy A
- Subjects
- Humans, Cross-Sectional Studies, India epidemiology, Male, Female, Middle Aged, Adult, Biomarkers blood, Cholesterol, HDL blood, Prevalence, Cholesterol, LDL blood, Apolipoproteins B blood
- Abstract
Background: Defining lipid goals solely on low-density lipoprotein-cholesterol (LDL-C) levels in Indian population may cause misclassification due to high prevalence of hypertriglyceridemia and small dense LDL-C particles. International guidelines now recommend Apoliporotein-B (Apo-B) and non-high-density lipoprotein-cholesterol (non-HDL-C) levels as alternative targets. In this study, we used a cross-sectional representative population database to determine Apo-B and non-HDL-C cut-offs corresponding to identified LDL-C targets and compared them to international guidelines., Methods: A community-based survey carried out in urban Delhi and adjacent rural Ballabhgarh provided lipid values for 3047 individuals. The Spearman correlation coefficient was used to evaluate the degree of relationship between Apo-B and LDL-C and non-HDL-C. Cut-off values for Apo-B and non-HDL-C were established using receiver operator curve analysis correlating with guideline-recommended LDL-C targets., Results: Spearman's rank correlations between Apo-B and LDL-C (0.82) and non-HDL-C and LDL-C (0.93) were significant (p < 0.05). Proposed corresponding cut-off values for LDL-C of 55, 70,100,130 and 160 mg/dl for Apo-B and non-HDL-C in our population were 75.3, 75.5, 91.3, 107.6, 119.4 mg/dL and 92.5,96.5, 123.5, 154.5, 179.5 mg/dL respectively. However, in those with triglycerides >150 mg/dl the corresponding Apo-B and non-HDL-C values were 85.1, 92.7, 103.5, 117.5 and 135 mg/dL and 124.5, 126.5, 147.5, 167.5 and 190.5 mg/L respectively., Conclusion: Based on this study we provide Apo-B and non-HDL cut-offs corresponding to target LDL-C values in Indian patients with and without high triglycerides. It is noted that in individuals with triglycerides ≥ 150 mg/dl, the Apo-B levels are much higher than the values recommended by guidelines., Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests:Dr. Dorairaj Prabhakaran reports financial support was provided by Indian Council of Medical Research. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this., (Copyright © 2024. Published by Elsevier, a division of RELX India, Pvt. Ltd.)
- Published
- 2024
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.