1
|
Candelaria D, Tyagi V, Gallagher R, Hendriks JM, McCormack B. Person-centredness in cardiovascular care: The need for a whole-systems perspective. Eur J Cardiovasc Nurs 2024:zvae052. [PMID: 38655748 DOI: 10.1093/eurjcn/zvae052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 04/12/2024] [Accepted: 04/16/2024] [Indexed: 04/26/2024]
Affiliation(s)
- D Candelaria
- The University of Sydney, Faculty of Medicine and Health, Susan Wakil School of Nursing and Midwifery, Sydney, New South Wales, Australia
| | - V Tyagi
- The University of Sydney, Faculty of Medicine and Health, Susan Wakil School of Nursing and Midwifery, Sydney, New South Wales, Australia
| | - R Gallagher
- The University of Sydney, Faculty of Medicine and Health, Susan Wakil School of Nursing and Midwifery, Sydney, New South Wales, Australia
| | - J M Hendriks
- Caring Futures Institute, College of Nursing and Health Sciences, Flinders University, Adelaide, South Australia, Australia
- Centre for Heart Rhythm Disorders, University of Adelaide and Royal Adelaide Hospital, Adelaide, South Australia, Australia
| | - B McCormack
- The University of Sydney, Faculty of Medicine and Health, Susan Wakil School of Nursing and Midwifery, Sydney, New South Wales, Australia
| |
Collapse
|
2
|
Schwartz L, Salamon K, Simoni A, Eichler T, Jackson AR, Murtha M, Becknell B, Kauffman A, Linn-Peirano S, Holdsworth N, Tyagi V, Tang H, Rust S, Cortado H, Zabbarova I, Kanai A, Spencer JD. Insulin receptor signaling engages bladder urothelial defenses that limit urinary tract infection. Cell Rep 2024; 43:114007. [PMID: 38517889 DOI: 10.1016/j.celrep.2024.114007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 02/10/2024] [Accepted: 03/11/2024] [Indexed: 03/24/2024] Open
Abstract
Urinary tract infections (UTIs) commonly afflict people with diabetes. To better understand the mechanisms that predispose diabetics to UTIs, we employ diabetic mouse models and altered insulin signaling to show that insulin receptor (IR) shapes UTI defenses. Our findings are validated in human biosamples. We report that diabetic mice have suppressed IR expression and are more susceptible to UTIs caused by uropathogenic Escherichia coli (UPEC). Systemic IR inhibition increases UPEC susceptibility, while IR activation reduces UTIs. Localized IR deletion in bladder urothelium promotes UTI by increasing barrier permeability and suppressing antimicrobial peptides. Mechanistically, IR deletion reduces nuclear factor κB (NF-κB)-dependent programming that co-regulates urothelial tight junction integrity and antimicrobial peptides. Exfoliated urothelial cells or urine samples from diabetic youths show suppressed expression of IR, barrier genes, and antimicrobial peptides. These observations demonstrate that urothelial insulin signaling has a role in UTI prevention and link IR to urothelial barrier maintenance and antimicrobial peptide expression.
Collapse
Affiliation(s)
- Laura Schwartz
- The Kidney and Urinary Tract Center, The Abigail Wexner Research Institute at Nationwide Children's, Columbus, OH 43205, USA; Division of Nephrology and Hypertension, Nationwide Children's, Columbus, OH 43205, USA
| | - Kristin Salamon
- The Kidney and Urinary Tract Center, The Abigail Wexner Research Institute at Nationwide Children's, Columbus, OH 43205, USA
| | - Aaron Simoni
- The Kidney and Urinary Tract Center, The Abigail Wexner Research Institute at Nationwide Children's, Columbus, OH 43205, USA
| | - Tad Eichler
- The Kidney and Urinary Tract Center, The Abigail Wexner Research Institute at Nationwide Children's, Columbus, OH 43205, USA
| | - Ashley R Jackson
- The Kidney and Urinary Tract Center, The Abigail Wexner Research Institute at Nationwide Children's, Columbus, OH 43205, USA; Division of Nephrology and Hypertension, Nationwide Children's, Columbus, OH 43205, USA
| | - Matthew Murtha
- The Kidney and Urinary Tract Center, The Abigail Wexner Research Institute at Nationwide Children's, Columbus, OH 43205, USA
| | - Brian Becknell
- The Kidney and Urinary Tract Center, The Abigail Wexner Research Institute at Nationwide Children's, Columbus, OH 43205, USA; Division of Nephrology and Hypertension, Nationwide Children's, Columbus, OH 43205, USA
| | - Andrew Kauffman
- The Kidney and Urinary Tract Center, The Abigail Wexner Research Institute at Nationwide Children's, Columbus, OH 43205, USA; Tulane University, New Orleans, LA 70118, USA
| | - Sarah Linn-Peirano
- The Kidney and Urinary Tract Center, The Abigail Wexner Research Institute at Nationwide Children's, Columbus, OH 43205, USA; Department of Veterinary Biosciences, The Ohio State University College of Veterinary Medicine, Columbus, OH 43210, USA
| | - Natalie Holdsworth
- The Kidney and Urinary Tract Center, The Abigail Wexner Research Institute at Nationwide Children's, Columbus, OH 43205, USA; Ohio University Heritage College of Osteopathic Medicine, Athens, OH 45701, USA
| | - Vidhi Tyagi
- The Kidney and Urinary Tract Center, The Abigail Wexner Research Institute at Nationwide Children's, Columbus, OH 43205, USA
| | - Hancong Tang
- The Kidney and Urinary Tract Center, The Abigail Wexner Research Institute at Nationwide Children's, Columbus, OH 43205, USA
| | - Steve Rust
- The Kidney and Urinary Tract Center, The Abigail Wexner Research Institute at Nationwide Children's, Columbus, OH 43205, USA
| | - Hanna Cortado
- The Kidney and Urinary Tract Center, The Abigail Wexner Research Institute at Nationwide Children's, Columbus, OH 43205, USA
| | - Irina Zabbarova
- Department of Medicine, Renal-Electrolyte Division, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
| | - Anthony Kanai
- Department of Medicine, Renal-Electrolyte Division, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA; Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
| | - John David Spencer
- The Kidney and Urinary Tract Center, The Abigail Wexner Research Institute at Nationwide Children's, Columbus, OH 43205, USA; Division of Nephrology and Hypertension, Nationwide Children's, Columbus, OH 43205, USA.
| |
Collapse
|
3
|
Tyagi V, Khan A, Siddiqui S, Kakra Abhilashi M, Dhurve P, Tugnawat D, Bhan A, Naslund JA. Development of a Digital Program for Training Community Health Workers in the Detection and Referral of Schizophrenia in Rural India. Psychiatr Q 2023; 94:141-163. [PMID: 36988785 PMCID: PMC10052309 DOI: 10.1007/s11126-023-10019-w] [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] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/12/2023] [Indexed: 03/30/2023]
Abstract
This study aimed to develop and assess the acceptability of a digital program for training community health workers (CHWs) in the detection and referral of patients with schizophrenia in community settings in rural India. An iterative design process was employed. First, evidence-based content from existing community programs for schizophrenia care was incorporated into the curriculum, and reviewed by experts to ensure clinical utility and fidelity of the adapted content. Second, CHWs provided feedback on the appropriateness of language, content, and an initial prototype of the digital training program to ensure relevance for the local context. Focus group discussions were then used to understand the acceptability of the digital training prototype and to inform modifications to the design and layout. Qualitative data was analysed using a rapid thematic analysis approach based on predetermined topics pertaining to acceptability of the training content and digital platform. Development of the initial prototype involved content review by 13 subject matter experts with clinical expertise or experience accessing and receiving mental health services, and engagement of 23 CHWs, of which 11 provided feedback for contextualization of the training content and 12 participated in focus group discussions on the acceptability of the prototype. Additionally, 2 service-users with lived experience of schizophrenia contributed to initial testing of the digital training prototype and offered feedback in a focus group discussion. During contextualization of the training content, key feedback pertained to simplifying the language and presentation of the content by removing technical terms and including interactive content and images to enhance interest and engagement with the digital training. During prototype testing, CHWs shared their familiarity with similar symptoms but were unaware of schizophrenia as a treatable illness. They shared that training can help them identify symptoms of schizophrenia and connect patients with specialized care. They were also able to understand misconceptions and discrimination towards people with schizophrenia, and how to address these challenges by supporting others and spreading awareness in their communities. Participants also appreciated the digital training, as it could save them time and could be incorporated within their routine work. This study shows the acceptability of leveraging digital technology for building capacity of CHWs to support early detection and referral of schizophrenia in community settings in rural India. These findings can inform the subsequent evaluation of this digital training program to determine its impact on enhancing the knowledge and skills of CHWs.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | - John A Naslund
- Department of Global Health and Social Medicine, Harvard Medical School, 641 Huntington Avenue, Boston, MA, USA.
| |
Collapse
|
4
|
Naslund JA, Tyagi V, Khan A, Siddiqui S, Kakra Abhilashi M, Dhurve P, Mehta UM, Rozatkar A, Bhatia U, Vartak A, Torous J, Tugnawat D, Bhan A. Schizophrenia Assessment, Referral and Awareness Training for Health Auxiliaries (SARATHA): Protocol for a Mixed-Methods Pilot Study in Rural India. Int J Environ Res Public Health 2022; 19:14936. [PMID: 36429654 PMCID: PMC9690971 DOI: 10.3390/ijerph192214936] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 11/05/2022] [Accepted: 11/09/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Workforce shortages pose major obstacles to the timely detection and treatment of schizophrenia, particularly in low-income and middle-income countries. The SARATHA (Schizophrenia Assessment, Referral, and Awareness Training for Health Auxiliaries) project involves the systematic development, iterative refinement, and pilot testing of a digital program for training community health workers in the early detection and referral of schizophrenia in primary care settings in rural India. METHODS SARATHA is a three-phase study. Phase 1 involves consulting with experts and clinicians, and drawing from existing evidence to inform the development of a curriculum for training community health workers. Phase 2 consists of designing and digitizing the training content for delivery on a smartphone app. Design workshops and focus group discussions will be conducted to seek input from community health workers and service users living with schizophrenia to guide revisions and refinements to the program content. Lastly, Phase 3 entails piloting the training program with a target sample of 20 community health workers to assess feasibility and acceptability. Preliminary effectiveness will be explored, as measured by community health workers' changes in knowledge about schizophrenia and the program content after completing the training. DISCUSSION If successful, this digital training program will offer a potentially scalable approach for building capacity of frontline community health workers towards reducing delays in early detection of schizophrenia in primary care settings in rural India. This study can inform efforts to improve treatment outcomes for persons living with schizophrenia in low-resource settings.
Collapse
Affiliation(s)
- John A. Naslund
- Department of Global Health and Social Medicine, Harvard Medical School, Boston, MA 02115, USA
| | | | | | - Saher Siddiqui
- Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | | | | | - Urvakhsh Meherwan Mehta
- Department of Psychiatry, National Institute of Mental Health and Neurosciences (NIMHANS), Bengaluru 560029, India
| | - Abhijit Rozatkar
- Department of Psychiatry, All India Institute of Medical Sciences (AIIMS), Bhopal 462026, India
| | - Urvita Bhatia
- Department of Psychology, Health and Professional Development, Oxford Brookes University, Oxford OX3 0BP, UK
- Sangath, Porvorim 403501, India
| | - Anil Vartak
- Schizophrenia Awareness Association, Pune 411041, India
| | - John Torous
- Beth Israel Deaconess Medical Center, Boston, MA 02215, USA
| | | | | |
Collapse
|
5
|
Tyagi V, Pahwa M, Chadha S, Mittal T, Ahuja A. Robot-assisted radical cystectomy with intracorporeal urinary diversion - An experience with hybrid sandwich technique. EUR UROL SUPPL 2022. [DOI: 10.1016/s2666-1683(22)02186-3] [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: 11/06/2022] Open
|
6
|
Thirthalli J, Mehta UM, Keshav Kumar JK, Tyagi V, Sunder P, Dharmappa A, Govindaraj R, Saini J, Chaturvedi SK, Gangadhar BN. Randomized, sham-controlled trial of transcranial magnetic stimulation augmentation of cognitive remediation in schizophrenia. Schizophr Res 2022; 241:63-65. [PMID: 35086060 DOI: 10.1016/j.schres.2022.01.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 01/08/2022] [Accepted: 01/15/2022] [Indexed: 11/25/2022]
Affiliation(s)
- Jagadisha Thirthalli
- Department of Psychiatry, National Institute of Mental Health & Neurosciences (NIMHANS), Bengaluru, India.
| | - Urvakhsh Meherwan Mehta
- Department of Psychiatry, National Institute of Mental Health & Neurosciences (NIMHANS), Bengaluru, India
| | - J K Keshav Kumar
- Department of Clinical Psychology, National Institute of Mental Health & Neurosciences (NIMHANS), Bengaluru, India
| | - Vidhi Tyagi
- Department of Psychiatry, National Institute of Mental Health & Neurosciences (NIMHANS), Bengaluru, India
| | - Poornima Sunder
- Department of Psychiatry, National Institute of Mental Health & Neurosciences (NIMHANS), Bengaluru, India
| | - Arpitha Dharmappa
- Department of Psychiatry, National Institute of Mental Health & Neurosciences (NIMHANS), Bengaluru, India
| | - Ramajayam Govindaraj
- Department of Psychiatry, National Institute of Mental Health & Neurosciences (NIMHANS), Bengaluru, India
| | - Jitender Saini
- Department of Neuroradiology and Interventional Radiology, National Institute of Mental Health & Neurosciences (NIMHANS), Bengaluru, India
| | - S K Chaturvedi
- Department of Psychiatry, National Institute of Mental Health & Neurosciences (NIMHANS), Bengaluru, India
| | - B N Gangadhar
- Department of Psychiatry, National Institute of Mental Health & Neurosciences (NIMHANS), Bengaluru, India
| |
Collapse
|
7
|
Bhandari M, Hamid A, Tyagi V, Choudhary G, Mallikarjuna C, Desai M, Srivastava A, Ahlawat R, Dubey D, Pratt C, Reddiboina M. The art of data labelling for building supervised computer Vision models for kidney surgery. Eur Urol 2022. [DOI: 10.1016/s0302-2838(22)01351-3] [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: 11/30/2022]
|
8
|
Kumar P, Mahato DK, Gupta A, Pandhi S, Mishra S, Barua S, Tyagi V, Kumar A, Kumar M, Kamle M. Use of essential oils and phytochemicals against the mycotoxins producing fungi for shelf‐life enhancement and food preservation. Int J Food Sci Technol 2022. [DOI: 10.1111/ijfs.15563] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pradeep Kumar
- Applied Microbiology Lab Department of Forestry North Eastern Regional Institute of Science and Technology Nirjuli 791109 India
| | - Dipendra Kumar Mahato
- CASS Food Research Centre School of Exercise and Nutrition Sciences Deakin University Burwood VIC 3125 Australia
| | - Akansha Gupta
- Department of Dairy Science and Food Technology Institute of Agricultural Sciences Banaras Hindu University Varanasi 221005 India
| | - Shikha Pandhi
- Department of Dairy Science and Food Technology Institute of Agricultural Sciences Banaras Hindu University Varanasi 221005 India
| | - Sadhna Mishra
- Department of Dairy Science and Food Technology Institute of Agricultural Sciences Banaras Hindu University Varanasi 221005 India
- Faculty of Agricultural Sciences GLA University Mathura 281406 India
| | - Sreejani Barua
- Department of Agricultural and Food Engineering Indian Institute of Technology Kharagpur‐721302 India
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
| | - Vidhi Tyagi
- University School of Biotechnology Guru Gobind Singh Indraprastha University Sector 16C Dwarka New Delhi 110078 India
| | - Arvind Kumar
- Department of Dairy Science and Food Technology Institute of Agricultural Sciences Banaras Hindu University Varanasi 221005 India
| | - Manoj Kumar
- Chemical and Biochemical Processing Division ICAR—Central Institute for Research on Cotton Technology Mumbai 400019 India
| | - Madhu Kamle
- Applied Microbiology Lab Department of Forestry North Eastern Regional Institute of Science and Technology Nirjuli 791109 India
| |
Collapse
|
9
|
Abstract
India with a population of 1.3 billion has a unique health care system in its different states. Mental health care varies widely across the country and this became even more apparent after the COVID-19 pandemic set in. This paper examines the various strategies in response to COVID-19 adopted by the Government of India, the health departments of the individual states, and other private players such as on-government organizations and the civil society. The cessation of many services including outpatient and inpatient care and the scarcity of medicines were serious impacts of COVID-19. The prolonged lockdown in many parts of the country impeded access to mental health care services since public transport was unavailable. This led to many relapses in persons with serious mental disorders. The emergence of new cases of psychosis and an increase in suicides were also seen. Tele consultations came to the fore and many helplines were started offering counseling and guidance regarding the availability of mental health care facilities. While these helped the urban dwellers, those in remote and rural areas were unable to use these services effectively. Many mental health wards were used for COVID-19 patients and mental health professionals were deployed for COVID-19 related duty. The severely mentally ill, the homeless mentally ill, and the elderly were especially vulnerable. Based on our experience with COVID-19, we urge a strong call for action, in terms of strengthening the primary care facilities and increasing the manpower resources to deliver mental health care.
Collapse
Affiliation(s)
| | - Sandeep Grover
- Postgraduate Institute of Medical Education and Research , Chandigarh , India
| | | | | |
Collapse
|
10
|
Sewaybricker LE, Melhorn SJ, Rosenbaum JL, Askren MK, Tyagi V, Webb MF, De Leon MRB, Grabowski TJ, Schur EA. Reassessing relationships between appetite and adiposity in people at risk of obesity: A twin study using fMRI. Physiol Behav 2021; 239:113504. [PMID: 34147511 DOI: 10.1016/j.physbeh.2021.113504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 06/03/2021] [Accepted: 06/16/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND Neuroimaging studies suggest that appetitive drive is enhanced in obesity. OBJECTIVE To test if appetitive drive varies in direct proportion to the level of body adiposity after accounting for genetic factors that contribute to both brain response and obesity risk. SUBJECTS/METHODS Participants were adult monozygotic (n = 54) and dizygotic (n = 30) twins with at least one member of the pair with obesity. Body composition was assessed by dual-energy X-ray absorptiometry. Hormonal and appetite measures were obtained in response to a standardized meal that provided 20% of estimated daily caloric needs and to an ad libitum buffet meal. Pre- and post-meal functional magnetic resonance imaging (fMRI) assessed brain response to visual food cues in a set of a priori appetite-regulating regions. Exploratory voxelwise analyses outside a priori regions were performed with correction for multiple comparisons. RESULTS In a group of 84 adults, the majority with obesity (75%), body fat mass was not associated with hormonal responses to a meal (glucose, insulin, glucagon-like peptide-1 and ghrelin, all P>0.40), subjective feelings of hunger (β=-0.01 mm [95% CI -0.35, 0.34] P = 0.97) and fullness (β=0.15 mm [-0.15, 0.44] P = 0.33), or buffet meal intake in relation to estimated daily caloric needs (β=0.28% [-0.05, 0.60] P = 0.10). Body fat mass was also not associated with brain response to high-calorie food cues in appetite-regulating regions (Pre-meal β=-0.12 [-0.32, 0.09] P = 0.26; Post-meal β=0.18 [-0.02, 0.37] P = 0.09; Change by a meal β=0.29 [-0.02, 0.61] P = 0.07). Conversely, lower fat mass was associated with being weight reduced (β=-0.05% [-0.07, -0.03] P<0.001) and greater pre-meal activation to high-calorie food cues in the dorsolateral prefrontal cortex (Z = 3.63 P = 0.017). CONCLUSIONS In a large study of adult twins, the majority with overweight or obesity, the level of adiposity was not associated with excess appetitive drive as assessed by behavioral, hormonal, or fMRI measures.
Collapse
Affiliation(s)
- Leticia E Sewaybricker
- Department of Medicine, University of Washington, 1959 NE Pacific St. Box 356420, Seattle, WA, 98195 USA
| | - Susan J Melhorn
- Department of Medicine, University of Washington, 1959 NE Pacific St. Box 356420, Seattle, WA, 98195 USA
| | - Jennifer L Rosenbaum
- Department of Medicine, University of Washington, 1959 NE Pacific St. Box 356420, Seattle, WA, 98195 USA
| | - Mary K Askren
- Departments of Radiology and Neurology, University of Washington, 1959 NE Pacific St. Seattle, WA, 98195 USA
| | - Vidhi Tyagi
- Department of Medicine, University of Washington, 1959 NE Pacific St. Box 356420, Seattle, WA, 98195 USA
| | - Mary F Webb
- Department of Medicine, University of Washington, 1959 NE Pacific St. Box 356420, Seattle, WA, 98195 USA
| | - Mary Rosalynn B De Leon
- Department of Medicine, University of Washington, 1959 NE Pacific St. Box 356420, Seattle, WA, 98195 USA
| | - Thomas J Grabowski
- Departments of Radiology and Neurology, University of Washington, 1959 NE Pacific St. Seattle, WA, 98195 USA
| | - Ellen A Schur
- Department of Medicine, University of Washington, 1959 NE Pacific St. Box 356420, Seattle, WA, 98195 USA.
| |
Collapse
|
11
|
Bhandari M, Ali H, Desai M, Mallikarjuna C, Srivastava A, Dubey D, Tyagi V, Ahlawat R, Pratt C, Choudhary G, Trevor T, Reddiboina M. Complexities in annotating surgical videos for building supervised deep learning models for critical steps of laparoscopic live donor nephrectomy. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)00717-x] [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: 11/30/2022]
|
12
|
Tyagi V, Parihar V, Singh D, Kapoor S, Kapoor M. The DEAD-box RNA helicase eIF4A1 interacts with the SWI2/SNF2-related chromatin remodelling ATPase DDM1 in the moss Physcomitrella. Biochim Biophys Acta Proteins Proteom 2020; 1869:140592. [PMID: 33359411 DOI: 10.1016/j.bbapap.2020.140592] [Citation(s) in RCA: 1] [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: 09/12/2020] [Revised: 12/17/2020] [Accepted: 12/18/2020] [Indexed: 12/27/2022]
Abstract
eIF4A is a DEAD box containing RNA helicase that plays crucial roles in regulating translation initiation, growth and abiotic stress tolerance in plants. It also functions as an ATP-dependent RNA binding protein to curb granule formation by limiting RNA-RNA interactions that promote RNA condensation and formation of ribonucleoprotein particles in vivo. Helicase activity of eIF4A is known to be dictated by its binding partners. Proteins interacting with eIF4A have been identified across land plants. In monocots a close link between eIF4A regulated processes and DNA methylation in epigenetic regulation of plant development is inferred from interaction between OseIF4A and the de novo methyltransferase OsDRM2 and loss-of-function studies of these genes in Oryza sativa and Brachypodium distachyon. In the moss Physcomitrella patens, eIF4A1 encoded by Pp3c6_1080V3.1 interacts with the heterogeneous nuclear ribonucleoprotein (hnRNP) PpLIF2L1, homolog of which in Arabidopsis regulates transcription of stress-responsive genes. In this study, using different protein-protein interaction methods, targeted gene knockout strategy and quantitative expression analysis we show genetic interaction between PpeIF4A1 and the putative nucleosome remodeler protein PpDDM1 and between PpDDM1 and PpLIF2L1 in vivo. Stress-induced co-expression of PpeIF4A1, PpDDM1 and PpLIF2L1, their roles in salt stress tolerance and differences in subnuclear distribution of PpLIF2L1 in ppeif4a1 cells in comparison to wild type suggest existence of a regulatory network comprising of RNA helicases, chromatin remodelling proteins and hnRNP active in stress-responsive biological processes in P. patens.
Collapse
Affiliation(s)
- Vidhi Tyagi
- University School of Biotechnology, Guru Gobind Singh Indraprastha University, Sector 16C, Dwarka, New Delhi 110078, India
| | - Vimala Parihar
- University School of Biotechnology, Guru Gobind Singh Indraprastha University, Sector 16C, Dwarka, New Delhi 110078, India
| | - Darshika Singh
- University School of Biotechnology, Guru Gobind Singh Indraprastha University, Sector 16C, Dwarka, New Delhi 110078, India
| | - Sanjay Kapoor
- Interdisciplinary Centre for Plant Genomics and Department of Plant Molecular Biology, University of Delhi, South Campus Benito Juarez Road, New Delhi 110021, India
| | - Meenu Kapoor
- University School of Biotechnology, Guru Gobind Singh Indraprastha University, Sector 16C, Dwarka, New Delhi 110078, India.
| |
Collapse
|
13
|
Abstract
Plant genetic resources (PGR) are the foundation of agriculture as well as food and nutritional security.
The ICAR-NBPGR is the nodal institution at national level for management of PGR in India under the umbrella
of Indian Council of Agricultural Research (ICAR), New Delhi. India being one of the gene-rich countries faces a
unique challenge of protecting its natural heritage while evolving mutually beneficial strategies for germplasm
exchange with other countries. The Bureaus activities include PGR exploration, collection, exchange, characterization,
evaluation, conservation and documentation. It also has the responsibility to carry out quarantine of
all imported PGR including transgenics meant for research purposes. The multifarious activities are carried out
from ICAR-NBPGR headquarters and its 10 regional stations located in different agro-climatic zones of India. It
has linkages with international organizations of the Consultative Group on International Agricultural Research
(CGIAR) and national crop-based institutes to accomplish its mandated activities. NBPGR collects and acquires
germplasm from various sources, conserves it in the Genebank, characterizes and evaluates it for different traits
and provides ready material for breeders to develop varieties for farmers. ICAR-NBPGR encompasses the National
Genebank Network and at present, the National Genebank conserves more than 0.40 million accessions. NBPGR
works in service-mode for effective utilization of PGR in crop improvement programmes which depends mainly
on its systematic characterization and evaluation, and identification of potentially useful germplasm. NBPGR is
responsible for identifying trait-specific pre-adapted climate resilient genotypes, promising material with disease
resistance and quality traits which the breeders use for various crop improvement programmes. The system has
contributed immensely towards safeguarding the indigenous and introducing useful exotic PGR for enhancing
the agricultural production. Presently, our focus is on characterization of ex situ conserved germplasm and
detailed evaluation of prioritized crops for enhanced utilization; assessment of impact of on-farm conservation
practices on genetic diversity; genome-wide association mapping for identification of novel genes and alleles for
enhanced utilization of PGR; identification and deployment of germplasm/landraces using climate analog data;
validation of trait-specific introduced germplasm for enhanced utilization.
Key words: plant genetic resources; gene banks; wild relatives; biotic and abiotic stresses; marker-assisted
selection.
Collapse
Affiliation(s)
- K Singh
- ICAR-National Bureau of Plant Genetic Resources, Pusa Campus, New Delhi, India
| | - K Gupta
- ICAR-National Bureau of Plant Genetic Resources, Pusa Campus, New Delhi, India
| | - V Tyagi
- ICAR-National Bureau of Plant Genetic Resources, Pusa Campus, New Delhi, India
| | - S Rajkumar
- ICAR-National Bureau of Plant Genetic Resources, Pusa Campus, New Delhi, India
| |
Collapse
|
14
|
Parihar V, Arya D, Walia A, Tyagi V, Dangwal M, Verma V, Khurana R, Boora N, Kapoor S, Kapoor M. Functional characterization of LIKE HETEROCHROMATIN PROTEIN 1 in the moss Physcomitrella patens: its conserved protein interactions in land plants. Plant J 2019; 97:221-239. [PMID: 30537172 DOI: 10.1111/tpj.14182] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 11/13/2018] [Accepted: 11/26/2018] [Indexed: 05/15/2023]
Abstract
In flowering plants, LIKE HETEROCHROMATIN PROTEIN 1 (LHP1)/TERMINAL FLOWER 2 (TFL2) is known to interact with polycomb group (PcG) and non-PcG proteins and control developmental programs. LHP1/TFL2 is an ancient protein and has been characterized in the early-divergent plant Physcomitrella patens. However, interacting partners of PpLHP1 other than the chromomethylase PpCMT have not been identified to date. Also, while functional polycomb repressive complex 2 (PRC2) is known to exist in P. patens, there is no experimental evidence to support the existence of PRC1-like complexes in these mosses. In this study, using protein-protein interaction methods, transient expression assays and targeted gene knockout strategy, we report the conserved properties of LHP1/TFL2 using the Physcomitrella system. We show that a PRC1-like core complex comprising of PpLHP1 and the putative PRC1 Really Interesting New Gene (RING)-finger proteins can form in vivo. Also, the interaction between PpRING and the PRC2 subunit PpCLF further sheds light on the possible existence of combinatorial interactions between the Polycomb Repressive Complex (PRC) in early land plants. Based on the interaction between PpLHP1 and putative hnRNP PpLIF2-like in planta, we propose that the link between PpLHP1 regulation and RNA metabolic processes was established early in plants. The conserved subnuclear distribution pattern of PpLHP1 in moss protonema further provides insight into the manner in which LHP1/TFL2 are sequestered in the nucleoplasm in discrete foci. The PpLHP1 loss-of-function plants generated in this study share some of the pleiotropic defects with multiple aberrations reported in lhp1/tfl2. Taken together, this work documents an active role for PpLHP1 in epigenetic regulatory network in P. patens.
Collapse
Affiliation(s)
- Vimala Parihar
- University School of Biotechnology, Guru Gobind Singh Indraprastha University, Sector 16C, Dwarka, New Delhi, 110078, India
| | - Deepshikha Arya
- University School of Biotechnology, Guru Gobind Singh Indraprastha University, Sector 16C, Dwarka, New Delhi, 110078, India
| | - Akanksha Walia
- University School of Biotechnology, Guru Gobind Singh Indraprastha University, Sector 16C, Dwarka, New Delhi, 110078, India
| | - Vidhi Tyagi
- University School of Biotechnology, Guru Gobind Singh Indraprastha University, Sector 16C, Dwarka, New Delhi, 110078, India
| | | | - Vibha Verma
- Interdisciplinary Centre for Plant Genomics and Department of Plant Molecular Biology, University of Delhi South Campus, Benito Juarez Road, New Delhi, 110021, India
| | - Ridhi Khurana
- Interdisciplinary Centre for Plant Genomics and Department of Plant Molecular Biology, University of Delhi South Campus, Benito Juarez Road, New Delhi, 110021, India
| | - Neelima Boora
- Interdisciplinary Centre for Plant Genomics and Department of Plant Molecular Biology, University of Delhi South Campus, Benito Juarez Road, New Delhi, 110021, India
| | - Sanjay Kapoor
- Interdisciplinary Centre for Plant Genomics and Department of Plant Molecular Biology, University of Delhi South Campus, Benito Juarez Road, New Delhi, 110021, India
| | - Meenu Kapoor
- University School of Biotechnology, Guru Gobind Singh Indraprastha University, Sector 16C, Dwarka, New Delhi, 110078, India
| |
Collapse
|
15
|
Parihar V, Arya D, Walia A, Tyagi V, Dangwal M, Verma V, Khurana R, Boora N, Kapoor S, Kapoor M. Functional characterization of LIKE HETEROCHROMATIN PROTEIN 1 in the moss Physcomitrella patens: its conserved protein interactions in land plants. Plant J 2019; 97:219-220. [PMID: 30537172 DOI: 10.1111/tpj.14221] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 03/30/2018] [Revised: 11/13/2018] [Accepted: 11/26/2018] [Indexed: 05/18/2023]
Abstract
In flowering plants, LIKE HETEROCHROMATIN PROTEIN 1 (LHP1)/TERMINAL FLOWER 2 (TFL2) is known to interact with polycomb group (PcG) and non-PcG proteins and control developmental programs. LHP1/TFL2 is an ancient protein and has been characterized in the early-divergent plant Physcomitrella patens. However, interacting partners of PpLHP1 other than the chromomethylase PpCMT have not been identified to date. Also, while functional polycomb repressive complex 2 (PRC2) is known to exist in P. patens, there is no experimental evidence to support the existence of PRC1-like complexes in these mosses. In this study, using protein-protein interaction methods, transient expression assays and targeted gene knockout strategy, we report the conserved properties of LHP1/TFL2 using the Physcomitrella system. We show that a PRC1-like core complex comprising of PpLHP1 and the putative PRC1 Really Interesting New Gene (RING)-finger proteins can form in vivo. Also, the interaction between PpRING and the PRC2 subunit PpCLF further sheds light on the possible existence of combinatorial interactions between the Polycomb Repressive Complex (PRC) in early land plants. Based on the interaction between PpLHP1 and putative hnRNP PpLIF2-like in planta, we propose that the link between PpLHP1 regulation and RNA metabolic processes was established early in plants. The conserved subnuclear distribution pattern of PpLHP1 in moss protonema further provides insight into the manner in which LHP1/TFL2 are sequestered in the nucleoplasm in discrete foci. The PpLHP1 loss-of-function plants generated in this study share some of the pleiotropic defects with multiple aberrations reported in lhp1/tfl2. Taken together, this work documents an active role for PpLHP1 in epigenetic regulatory network in P. patens.
Collapse
Affiliation(s)
- Vimala Parihar
- University School of Biotechnology, Guru Gobind Singh Indraprastha University, Sector 16C, Dwarka, New Delhi, 110078, India
| | - Deepshikha Arya
- University School of Biotechnology, Guru Gobind Singh Indraprastha University, Sector 16C, Dwarka, New Delhi, 110078, India
| | - Akanksha Walia
- University School of Biotechnology, Guru Gobind Singh Indraprastha University, Sector 16C, Dwarka, New Delhi, 110078, India
| | - Vidhi Tyagi
- University School of Biotechnology, Guru Gobind Singh Indraprastha University, Sector 16C, Dwarka, New Delhi, 110078, India
| | | | - Vibha Verma
- Interdisciplinary Centre for Plant Genomics and Department of Plant Molecular Biology, University of Delhi South Campus, Benito Juarez Road, New Delhi, 110021, India
| | - Ridhi Khurana
- Interdisciplinary Centre for Plant Genomics and Department of Plant Molecular Biology, University of Delhi South Campus, Benito Juarez Road, New Delhi, 110021, India
| | - Neelima Boora
- Interdisciplinary Centre for Plant Genomics and Department of Plant Molecular Biology, University of Delhi South Campus, Benito Juarez Road, New Delhi, 110021, India
| | - Sanjay Kapoor
- Interdisciplinary Centre for Plant Genomics and Department of Plant Molecular Biology, University of Delhi South Campus, Benito Juarez Road, New Delhi, 110021, India
| | - Meenu Kapoor
- University School of Biotechnology, Guru Gobind Singh Indraprastha University, Sector 16C, Dwarka, New Delhi, 110078, India
| |
Collapse
|
16
|
Abstract
Aims The aim of this study was to compare the rate of perioperative complications following aseptic revision total hip arthroplasty (THA) in patients aged ≥ 80 years with that in those aged < 80 years, and to identify risk factors for the incidence of serious adverse events in those aged ≥ 80 years using a large validated national database. Patients and Methods Patients who underwent aseptic revision THA were identified in the 2005 to 2015 National Surgical Quality Improvement Program (NSQIP) database and stratified into two age groups: those aged < 80 years and those aged ≥ 80 years. Preoperative and procedural characteristics were compared. Multivariate regression analysis was used to compare the risk of postoperative complications and readmission. Risk factors for the development of a serious adverse event in those aged ≥ 80 years were characterized. Results The study included 7569 patients aged < 80 years and 1419 were aged ≥ 80 years. Multivariate analysis showed a higher risk of perioperative mortality, pneumonia, urinary tract infection and the requirement for a blood transfusion and an extended length of stay in those aged ≥ 80 years compared with those aged < 80 years. Independent risk factors for the development of a serious adverse event in those aged ≥ 80 years include an American Society of Anesthesiologists score of ≥ 3 and procedures performed under general anaesthesia. Conclusion Even after controlling for patient and procedural characteristics, aseptic revision THA is associated with greater risks in patients aged ≥ 80 years compared with younger patients. This is important for counselling and highlights the need for medical optimization in these vulnerable patients. Cite this article: Bone Joint J 2018;100-B:143–51.
Collapse
Affiliation(s)
- P. Bovonratwet
- Yale School of Medicine, 47
College Street, New Haven, Connecticut
06520, USA
| | - R. Malpani
- Yale School of Medicine, 47
College Street, New Haven, Connecticut
06520, USA
| | - T. D. Ottesen
- Yale School of Medicine, 47
College Street, New Haven, Connecticut
06520, USA
| | - V. Tyagi
- Yale School of Medicine, 47
College Street, New Haven, Connecticut
06520, USA
| | - N. T. Ondeck
- Yale School of Medicine, 47
College Street, New Haven, Connecticut
06520, USA
| | - L. E. Rubin
- Yale School of Medicine, 47
College Street, New Haven, Connecticut
06520, USA
| | - J. N. Grauer
- Yale School of Medicine, 47
College Street, New Haven, Connecticut
06520, USA
| |
Collapse
|
17
|
Melhorn SJ, Askren MK, Chung WK, Kratz M, Bosch TA, Tyagi V, Webb MF, De Leon MRB, Grabowski TJ, Leibel RL, Schur EA. FTO genotype impacts food intake and corticolimbic activation. Am J Clin Nutr 2018; 107:145-154. [PMID: 29529147 PMCID: PMC6454473 DOI: 10.1093/ajcn/nqx029] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [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: 07/12/2017] [Accepted: 11/15/2017] [Indexed: 01/08/2023] Open
Abstract
Background Variants in the first intron of the fat mass and obesity-associated (FTO) gene increase obesity risk. People with "high-risk" FTO genotypes exhibit preference for high-fat foods, reduced satiety responsiveness, and greater food intake consistent with impaired satiety. Objective We sought central nervous system mechanisms that might underlie impaired satiety perception in people with a higher risk of obesity based on their FTO genotype. Design We performed a cross-sectional study in a sample that was enriched for obesity and included 20 higher-risk participants with the AA (risk) genotype at the rs9939609 locus of FTO and 94 lower-risk participants with either the AT or TT genotype. We compared subjective appetite, appetite-regulating hormones, caloric intake at a buffet meal, and brain response to visual food cues in an extended satiety network using functional MRI scans acquired before and after a standardized meal. Results Higher-risk participants reported less subjective fullness (χ2 = 7.48, P < 0.01), rated calorie-dense food as more appealing (χ2 = 3.92, P < 0.05), and consumed ∼350 more kilocalories than lower-risk participants (β = 348 kcal, P = 0.03), even after adjusting for fat or lean mass. Premeal, the higher-risk group had greater activation by "fattening" food images (compared with objects) in the medial orbital frontal cortex (β = 11.6; 95% CI: 1.5, 21.7; P < 0.05). Postmeal, the higher-risk subjects had greater activation by fattening (compared with nonfattening) food cues in the ventral tegmental area/substantia nigra (β = 12.8; 95% CI: 2.7, 23.0; P < 0.05), amygdala (β = 10.6; 95% CI: 0.7, 20.5; P < 0.05), and ventral striatum (β = 6.9; 95% CI: 0.2, 13.7; P < 0.05). Moreover, postmeal activation by fattening food cues within the preselected extended satiety network was positively associated with energy intake at the buffet meal (R2 = 0.29, P = 0.04) and this relation was particularly strong in the dorsal striatum (R2 = 0.28, P = 0.01), amygdala (R2 = 0.28, P = 0.03), and ventral tegmental area/substantia nigra (R2 = 0.27, P = 0.01). Conclusion The findings are consistent with a model in which allelic variants in FTO raise obesity risk through impaired central nervous system satiety processing, thereby increasing food intake. This study is registered at clinicaltrials.gov as NCT02483663.
Collapse
Affiliation(s)
- Susan J Melhorn
- Departments of Medicine and Radiology, University of Washington, Seattle, WA
| | - Mary K Askren
- Departments of Radiology, University of Washington, Seattle, WA
| | - Wendy K Chung
- Departments of Pediatrics and Medicine, Columbia University Medical Center, New York, NY,Departments of Medicine, Columbia University Medical Center, New York, NY
| | - Mario Kratz
- Department of Epidemiology, University of Washington & Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Tyler A Bosch
- College of Education and Human Development, University of Minnesota, Minneapolis, MN
| | - Vidhi Tyagi
- Departments of Medicine and Radiology, University of Washington, Seattle, WA
| | - Mary F Webb
- Departments of Medicine and Radiology, University of Washington, Seattle, WA
| | | | | | - Rudolph L Leibel
- Departments of Pediatrics and Medicine, Columbia University Medical Center, New York, NY
| | - Ellen A Schur
- Departments of Medicine and Radiology, University of Washington, Seattle, WA,Address correspondence to EAS (e-mail: )
| |
Collapse
|
18
|
Kumar CN, Phutane VH, Thirthalli J, Jayaram N, Kesavan M, Mehta UM, Tyagi V, Gangadhar BN. Resolution of Cognitive Adverse Effects of Electroconvulsive Therapy in Persons with Schizophrenia: A Prospective Study. Indian J Psychol Med 2017; 39:488-494. [PMID: 28852245 PMCID: PMC5559999 DOI: 10.4103/ijpsym.ijpsym_75_17] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND Cognitive impairments are among the most important adverse effects of electroconvulsive therapy (ECT). Although much is known about them in patients with depression, there is very little information about these in persons with schizophrenia. METHODS In this study, we examined the persistence of cognitive impairments in a subsample of patients (n = 49) with schizophrenia who had earlier participated in a clinical trial comparing the therapeutic and cognitive efficacy of bifrontal ECT (BFECT; n = 23) and bitemporal ECT (BTECT; n = 29) electrode placements. Total scores on Hindi Mental State Examination, processing speed, working memory, and verbal fluency were assessed in these patients at two points: first, at the end of their respective ECT course and at the follow-up (mean [standard deviation] = 98.7 [38.3] days). The course of cognitive impairments was assessed in all patients (n = 49) as a single group. Further, BFECT and BTECT patients were also compared with one another. RESULTS ECT-induced acute cognitive impairments in patients with schizophrenia had normalized by the end of 3 months' follow-up post-ECT. All the tested parameters in the realm of Hindi Mental Status Examination, speed of processing, sequencing, spatial and working memory and verbal fluency showed recovery. Further, across all tests, BFECT and BTECT ultimately had similar scores at the follow-up though BFECT performed relatively better with regards to the acute effects. In fact, worst performing BTECT group caught up to recover to comparable levels of performance by the end of follow-up. CONCLUSIONS In patients with schizophrenia, most of acute ECT-induced cognitive impairments recover by the end of 3 months' post-ECT. Further, different electrode placements do not seem to make any difference regarding ultimate recovery of cognitive deficits. Future prospective studies are needed that could address the limitations of this study.
Collapse
Affiliation(s)
| | - Vivek Haridas Phutane
- Consultant Psychiatrist, Aged Psychiatric Assessment and Treatment Team (APATT), Goulburn Valley Area Mental Health Service (GVAMHS), GV Health, Shepperton, Melbourne, Australia
| | - Jagadisha Thirthalli
- Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India
| | - Naveen Jayaram
- Department of Psychiatry, Sakra World Hospital, Bengaluru, Karnataka, India
| | - Muralidharan Kesavan
- Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India
| | - Urvakhsh Meherwan Mehta
- Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India
| | - Vidhi Tyagi
- Department of Clinical Psychology, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India
| | - Bangalore N. Gangadhar
- Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India
| |
Collapse
|
19
|
Kannan S, Gowri S, Tyagi V, Kohli S, Jain R, Kapil P, Bhardwaj A. Direct-to-physician and direct-to-consumer advertising: Time to have stringent regulations. Int J Risk Saf Med 2016; 27:77-83. [PMID: 26410010 DOI: 10.3233/jrs-150644] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [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: 11/15/2022]
Abstract
BACKGROUND Direct to physician advertisements and direct to consumer advertisement (DTCA) is a well-known marketing strategy of pharmaceutical companies. Studies from the West and also from the Indian sub-continent revealed several lacunae in such advertisements. OBJECTIVES The present study was carried out to understand the international and national scenario regarding the lacunae in drug advertisements and the opinion of both physicians and patients regarding DTCA. METHODS The present study was conducted after obtaining approval from the institutional ethics committee. Warning letters (WLs) issued to pharmaceutical companies by United States Food and Drug Administration (USFDA) and Therapeutic Goods Administration (TGA) due to discrepancies in the advertisements were analyzed for reasons that were grouped into one of the following categories: overstatement of efficacy; unapproved indication; lack of adequate directions to use; omission of adverse effects; misleading claims; advertisement made for an unapproved drug (investigational new product). Drug advertisements in Current Index of Medical Specialties (CIMS) April-July 2014 issue was also analyzed for lacunae depending on categories as mentioned above. Physicians and patients in a tertiary care medical college and hospital were administered a validated questionnaire exploring their views about crucial aspects of DTCA. Descriptive statistics was used for each of the categories. RESULTS A total of 93 WLs issued by USFDA and 36 by TGA were assessed. Majority of the WLs by USFDA were issued for omission of adverse effects (61/93, 65.6%) followed by misleading claims (54/93, 58.1%). Similarly, WLs by TGA were also mainly issued for the presence of misleading claims (35/36, 97.2%) followed by overstatement of efficacy (26/36, 72.2%) and CIMS evaluation had revealed that 78/92 (84.8%) advertisements omitted adverse effects, 20/92 (21.7%) had misleading claims, 9/92 (9.8%) had unapproved indications and 7/92 (7.6%) overstated the efficacy. With regard to the opinion regarding DTCA, 69.9% physicians had a patient discussing DTCA that was clinically inappropriate. One hundred (64.5%) out of 155 physicians opined that DTCA encourage patients to attend physicians regarding preventive healthcare. On the contrary, 82/155 (52.9%) physicians felt that DTCA would damage the same. Similarly, 69 out of the total 100 patients felt that drug advertisements aid them to have better discussions with their treating physicians. Surprisingly, a large majority (91/100) were of the opinion that only safe drugs are allowed to be advertised. CONCLUSION To conclude, from the findings of this study both the physicians and patients should be cautious and not overzealous while dealing with drug advertisements or promotional literature. More stringent scrutiny and issue of WLs or blacklisting of indulging pharmaceutical companies are mandatory by the regulatory agency to contain the same.
Collapse
Affiliation(s)
- S Kannan
- Department of Pharmacology, Subharti Medical College and Hospital, Meerut, India
| | - S Gowri
- Department of Prosthodontics, Subharti Dental College, Meerut, India
| | - V Tyagi
- Department of Pharmacology, Subharti Medical College and Hospital, Meerut, India
| | - S Kohli
- Department of Pharmacology, Subharti Medical College and Hospital, Meerut, India
| | - R Jain
- Department of Pharmacology, Subharti Medical College and Hospital, Meerut, India
| | - P Kapil
- Department of Pharmacology, Subharti Medical College and Hospital, Meerut, India
| | - A Bhardwaj
- Department of Dermatology, Subharti Medical College and Hospital, Meerut, India
| |
Collapse
|
20
|
Melhorn SJ, Mehta S, Kratz M, Tyagi V, Webb MF, Noonan CJ, Buchwald DS, Goldberg J, Maravilla KR, Grabowski TJ, Schur EA. Brain regulation of appetite in twins. Am J Clin Nutr 2016; 103:314-22. [PMID: 26739033 PMCID: PMC4733261 DOI: 10.3945/ajcn.115.121095] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [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: 08/11/2015] [Accepted: 11/17/2015] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Neural responses to highly energetic food cues are robust and are suppressed by eating. It is not known if neural responsiveness to food cues is an inherited trait and possibly even one that mediates the genetic influences on body weight that have been previously observed. OBJECTIVE We investigated the inherited influence on brain responses to high-calorie visual food cues before and after a meal. DESIGN With the use of a monozygotic twin study design, 21 healthy monozygotic twin pairs consumed a standardized breakfast and, 3.5 h later, underwent the first of 2 functional MRI (fMRI) scans with the use of visual food cues. After the first fMRI session, twins consumed a standardized meal, which was followed by the second fMRI. Serial ratings of appetite and food appeal were obtained. An ad libitum buffet was used to measure total caloric and macronutrient intakes. Intraclass correlations (ICCs) were used to test for inherited influences by comparing whether intrapair similarity was greater than interpair similarity. RESULTS Body mass index was highly correlated within twin pairs (ICC: 0.96; P < 0.0001). ICCs also showed a strong intrapair similarity for the meal-induced change in hunger (ICC: 0.41; P = 0.03), fullness (ICC: 0.39; P = 0.04), and the appeal of fattening food (ICC: 0.57; P < 0.001). Twins ate a similar number of kilocalories at the buffet (ICC: 0.43; P = 0.02). Before the meal, the global brain activation across regions involved in satiety processing was not more similar in twins than in unrelated individuals. However, significant ICCs were present after the meal (ICC: 0.39; P = 0.04) and for the meal-induced change in activation by high-calorie visual food cues (ICC: 0.52; P < 0.01). CONCLUSION Inherited factors influence both satiety perception and the effect of a meal to alter regional brain responses to images of highly energetic food. This trial was registered at clinicaltrials.gov as NCT02483663.
Collapse
Affiliation(s)
| | - Sonya Mehta
- Department of Radiology, Integrated Brain Imaging Center
| | - Mario Kratz
- Department of Epidemiology, Fred Hutchinson Cancer Research Center, Public Health Sciences Division, Seattle WA; and
| | - Vidhi Tyagi
- Department of Medicine, General Internal Medicine
| | | | | | | | - Jack Goldberg
- Department of Epidemiology, VA Epidemiologic Research and Information Center, Vietnam Era Twin Registry, Seattle, WA
| | | | - Thomas J Grabowski
- Department of Radiology, Integrated Brain Imaging Center, Department of Neurology, University of Washington, Seattle, WA
| | | |
Collapse
|
21
|
Schur EA, Melhorn SJ, Oh SK, Lacy JM, Berkseth KE, Guyenet SJ, Sonnen JA, Tyagi V, Rosalynn M, De Leon B, Webb MF, Gonsalves ZT, Fligner CL, Schwartz MW, Maravilla KR. Radiologic evidence that hypothalamic gliosis is associated with obesity and insulin resistance in humans. Obesity (Silver Spring) 2015; 23:2142-8. [PMID: 26530930 PMCID: PMC4634110 DOI: 10.1002/oby.21248] [Citation(s) in RCA: 94] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 07/10/2015] [Accepted: 07/25/2015] [Indexed: 01/05/2023]
Abstract
OBJECTIVE To use quantitative magnetic resonance imaging (MRI) to test whether mediobasal hypothalamic (MBH) gliosis is associated with obesity and insulin resistance in humans. METHODS Sixty-seven participants underwent a fasting blood draw and MRI. Cases with radiologic evidence of MBH gliosis (N = 22) were identified as the upper tertile of left MBH T2 relaxation time and were compared to controls (N = 23) from the lowest tertile. In a separate postmortem study, brain slices (N = 10) through the MBH were imaged by MRI and stained for glial fibrillary acidic protein (GFAP). RESULTS In all participants, longer T2 relaxation time in the left MBH was associated with higher BMI (P = 0.01). Compared with controls, cases had longer T2 relaxation times in the right MBH (P < 0.05), as well as higher BMI (P < 0.05), fasting insulin concentrations (P < 0.01), and HOMA-IR values (P < 0.01), adjusted for sex and age. Elevations in insulin and HOMA-IR were also independent of BMI. In the postmortem study, GFAP staining intensity was positively associated with MBH T2 relaxation time (P < 0.05), validating an MRI-based method for the detection of MBH gliosis in humans. CONCLUSIONS These findings link hypothalamic gliosis to insulin resistance in humans and suggest that the link is independent of the level of adiposity.
Collapse
Affiliation(s)
- Ellen A Schur
- Department of Medicine, University of Washington, Seattle, Washington, USA
- Division of General Internal Medicine, University of Washington, Seattle, Washington, USA
| | - Susan J Melhorn
- Department of Medicine, University of Washington, Seattle, Washington, USA
- Division of General Internal Medicine, University of Washington, Seattle, Washington, USA
| | - Seok-Kyun Oh
- Department of Radiology, University of Washington, Seattle, Washington, USA
| | - J Matthew Lacy
- Department of Pathology, University of Washington, Seattle, Washington, USA
| | - Kathryn E Berkseth
- Department of Medicine, University of Washington, Seattle, Washington, USA
- Division of Metabolism, Endocrinology and Nutrition, University of Washington, Seattle, Washington, USA
| | - Stephan J Guyenet
- Department of Medicine, University of Washington, Seattle, Washington, USA
- Division of Metabolism, Endocrinology and Nutrition, University of Washington, Seattle, Washington, USA
| | - Joshua A Sonnen
- Department of Pathology, University of Washington, Seattle, Washington, USA
| | - Vidhi Tyagi
- Department of Medicine, University of Washington, Seattle, Washington, USA
- Division of General Internal Medicine, University of Washington, Seattle, Washington, USA
| | | | - B De Leon
- Department of Medicine, University of Washington, Seattle, Washington, USA
- Division of General Internal Medicine, University of Washington, Seattle, Washington, USA
| | - Mary F Webb
- Department of Epidemiology, University of Washington, Seattle, Washington, USA
| | - Zenobia T Gonsalves
- Department of Medicine, University of Washington, Seattle, Washington, USA
- Division of General Internal Medicine, University of Washington, Seattle, Washington, USA
| | - Corinne L Fligner
- Department of Pathology, University of Washington, Seattle, Washington, USA
| | - Michael W Schwartz
- Department of Medicine, University of Washington, Seattle, Washington, USA
- Division of Metabolism, Endocrinology and Nutrition, University of Washington, Seattle, Washington, USA
| | | |
Collapse
|
22
|
Bosch TA, Chow L, Dengel DR, Melhorn SJ, Webb M, Yancey D, Callahan H, De Leon MRB, Tyagi V, Schur EA. In adult twins, visceral fat accumulation depends more on exceeding sex-specific adiposity thresholds than on genetics. Metabolism 2015; 64:991-8. [PMID: 26117000 PMCID: PMC4546509 DOI: 10.1016/j.metabol.2015.06.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Revised: 05/30/2015] [Accepted: 06/02/2015] [Indexed: 10/23/2022]
Abstract
OBJECTIVE We recently reported sex-specific percent body fat (%BF) thresholds (males=23%, females=38%) above which, visceral adipose tissue (VAT) significantly increases. Using monozygotic (MZ) and dizygotic (DZ) twins, we examined the influence of genetics on regional fat distribution measured by dual-energy X-ray absorptiometry, above and below these sex-specific thresholds for VAT accumulation. METHODS Fifty-eight twin pairs (44 MZ, 14 DZ) were recruited from the University of Washington Twin Registry. Segmented linear regression was used to assess the threshold between VAT mass and %BF by sex and by zygosity. To assess the effect of genetics on VAT accumulation, Dunnett's T3 compared MZ and DZ pairs whether the twin pairs were both above the adiposity threshold or not. RESULTS %BF thresholds for VAT accumulation were identified (%BF: M=20.6%, F=39.4%). Zygosity-specific thresholds were not significantly different (p>0.05). If at least one twin was below threshold, DZ twins still exhibited greater within-pair differences than MZ pairs in %BF (p=0.023) but not VAT (p=0.121). CONCLUSIONS Using a twin study approach, we observed no difference by zygosity for the threshold as which VAT accumulates. Additionally, for the first time we observed that while total BF is influenced by genetics, VAT accumulation may depend more on whether a person's %BF is above their sex-specific adiposity threshold. These results suggest that there may not be a genetic predisposition for VAT accumulation but rather it is a result of a predisposition for total fat accumulation.
Collapse
Affiliation(s)
- Tyler A Bosch
- Department of Medicine, University of Minnesota Medical School, MMC 101, 420 Delaware St SE, Minneapolis, MN 55455, USA.
| | - Lisa Chow
- Department of Medicine, University of Minnesota Medical School, MMC 101, 420 Delaware St SE, Minneapolis, MN 55455, USA
| | - Donald R Dengel
- School of Kinesiology, University of Minnesota, 1900 University Avenue SE, Minneapolis, MN 55455, USA
| | - Susan J Melhorn
- Department of Medicine, University of Washington, Box 359780, 325 Ninth Avenue, Seattle, WA 98109, USA
| | - Mary Webb
- Department of Medicine, University of Washington, Box 359780, 325 Ninth Avenue, Seattle, WA 98109, USA
| | - Danielle Yancey
- Department of Medicine, University of Washington, Box 359780, 325 Ninth Avenue, Seattle, WA 98109, USA
| | - Holly Callahan
- Department of Medicine, University of Washington, Box 359780, 325 Ninth Avenue, Seattle, WA 98109, USA
| | - Mary Rosalyn B De Leon
- Department of Medicine, University of Washington, Box 359780, 325 Ninth Avenue, Seattle, WA 98109, USA
| | - Vidhi Tyagi
- Simmons College, 300 Fenway, Boston, MA 02115, USA
| | - Ellen A Schur
- Department of Medicine, University of Washington, Box 359780, 325 Ninth Avenue, Seattle, WA 98109, USA
| |
Collapse
|
23
|
Yadav R, Tikar SN, Sharma AK, Tyagi V, Sukumaran D, Jain AK, Veer V. Screening of some weeds for larvicidal activity against Aedes albopictus, a vector of dengue and chikungunya. J Vector Borne Dis 2015; 52:88-94. [PMID: 25815872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
Abstract
BACKGROUND & OBJECTIVES Screening of crude extracts of plants facilitates the establishment of highly effective extract for mosquito control. This practice should be preferred before in depth study of plant extracts rather than spending much efforts and energy in detailed examinations for practically ineffective extracts. In this study, leaf powders of four weed plants were used for the quick screening of effective plant extract as larvicide against III instar larvae of Aedes albopictus Skuse. At the same time, effect of different seasons on the larvicidal efficacy of plants and selection of proper solvents for further investigation were also studied. METHODS Leaves of Vernonia cinerea, Prosopis juliflora, Hyptis suaveolens and Malvastrum coromandelianum plants were collected in summer, winter and rainy seasons from Madhya Pradesh region (India). To assess the larvicidal efficacy the suspensions of leaf powders in different solvents (isopropanol, methanol, acetone, dimethylsulfoxide and water) were used for larvicidal bioassay. The mortality counts were made after 24 h and the LC50 and LC90 values were calculated. RESULTS Results showed that leaf powder of V. cinerea in acetone collected during summer showed highest efficacy with LC50 value of 0.22 g/l and LC90 of 0.96 g/l followed by methanolic solution of P. juliflora with LC50 of 0.44 g/l and LC90 value as 1.85 g/l. Amongst all solvents, leaf powder in acetone; while among seasons, summer collected plant materials were found to be more effective larvicides as compared to others. INTERPRETATION & CONCLUSION Summer and winter collected leaves of V. cinerea and P. juliflora dissolved in the solvents of medium polarity range showed significant larval toxicity and thus suggests a detailed study on these plants as potential larval control agents.
Collapse
Affiliation(s)
- R Yadav
- Vector Management Division, Defence Research and Development Establishment, Gwalior, India
| | | | | | | | | | | | | |
Collapse
|
24
|
Melhorn SJ, Tyagi V, Smeraglio A, Roth CL, Schur EA. Initial evidence that GLP-1 receptor blockade fails to suppress postprandial satiety or promote food intake in humans. Appetite 2014; 82:85-90. [PMID: 25049134 DOI: 10.1016/j.appet.2014.07.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [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: 04/01/2014] [Revised: 07/10/2014] [Accepted: 07/11/2014] [Indexed: 01/17/2023]
Abstract
Glucagon-like peptide 1 (GLP-1) has incretin effects that are well-documented, but the independent role of GLP-1 action in human satiety perception is debated. We hypothesized that blockade of GLP-1 receptors would suppress postprandial satiety and increase voluntary food intake. After an overnight fast, eight normal weight participants (seven men, BMI 19-24.7 kg/m(2), age 19-29 year) were enrolled in a double-blind, placebo-controlled, randomized crossover study of the GLP-1 antagonist Exendin-[9-39] (Ex-9) to determine if the satiating effects of a meal are dependent on GLP-1 signaling in humans. Following a fasting blood draw, iv infusion of Ex-9 (600-750 pmol/kg/min) or saline began. Thirty minutes later, subjects consumed a standardized breakfast followed 90 min later (at the predicted time of maximal endogenous circulating GLP-1) by an ad libitum buffet meal to objectively measure satiety. Infusions ended once the buffet meal was complete. Visual analog scale ratings of hunger and fullness and serial assessments of plasma glucose, insulin, and GLP-1 concentrations were done throughout the experiment. Contrary to the hypothesis, during Ex-9 infusion subjects reported a greater decrease in hunger due to consumption of the breakfast (Ex-9 -62 ± 5; placebo -41 ± 9; P=0.01) than during placebo. There were no differences in ad libitum caloric intake between Ex-9 and placebo. Ex-9 increased glucose, insulin, and endogenous GLP-1, which may have counteracted any effects of Ex-9 infusion to block satiety signaling. Blockade of GLP-1 receptors failed to suppress subjective satiety following a standardized meal or increase voluntary food intake in healthy, normal-weight subjects.
Collapse
Affiliation(s)
- Susan J Melhorn
- Department of Medicine, Division of General Internal Medicine, University of Washington, 325 Ninth Ave, Box 359780, Seattle, WA 98104, USA
| | - Vidhi Tyagi
- Department of Medicine, Division of General Internal Medicine, University of Washington, 325 Ninth Ave, Box 359780, Seattle, WA 98104, USA
| | - Anne Smeraglio
- School of Medicine, Oregon Health & Sciences University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA
| | - Christian L Roth
- Division of Endocrinology, Seattle Children's Research Institute, 1900 Ninth Ave, Seattle, WA 98101, USA
| | - Ellen A Schur
- Department of Medicine, Division of General Internal Medicine, University of Washington, 325 Ninth Ave, Box 359780, Seattle, WA 98104, USA.
| |
Collapse
|
25
|
|
26
|
Mehta S, Melhorn SJ, Smeraglio A, Tyagi V, Grabowski T, Schwartz MW, Schur EA. Regional brain response to visual food cues is a marker of satiety that predicts food choice. Am J Clin Nutr 2012; 96:989-99. [PMID: 22990034 PMCID: PMC3471210 DOI: 10.3945/ajcn.112.042341] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Neuronal processes that underlie the subjective experience of satiety after a meal are not well defined. OBJECTIVE We investigated how satiety alters the perception of and neural response to visual food cues. DESIGN Normal-weight participants (10 men, 13 women) underwent 2 fMRI scans while viewing images of high-calorie food that was previously rated as incompatible with weight loss and "fattening" and low-calorie, "nonfattening" food. After a fasting fMRI scan, participants ate a standardized breakfast and underwent reimaging at a randomly assigned time 15-300 min after breakfast to vary the degree of satiety. Measures of subjective appetite, food appeal, and ad libitum food intake (measured after the second fMRI scan) were correlated with activation by "fattening" (compared with "nonfattening") food cues in a priori regions of interest. RESULTS Greater hunger correlated with higher appeal ratings of "fattening" (r = 0.46, P = 0.03) but not "nonfattening" (r = -0.20, P = 0.37) foods. Fasting amygdalar activation was negatively associated with fullness (left: r = -0.52; right: r = -0.58; both P ≤ 0.01), whereas postbreakfast fullness was positively correlated with activation in the dorsal striatum (right: r = 0.44; left: r = 0.45; both P < 0.05). After breakfast, participants with greater activation in 4 regions-medial orbital frontal cortex (r = 0.49, P < 0.05), left amygdala (r = 0.49, P < 0.05), left insula (r = 0.47, P < 0.05), and nucleus accumbens (right: r = 0.57, P < 0.01; left: r = 0.43, P < 0.05)-chose buffet foods with higher fat content. CONCLUSIONS Postmeal satiety is shown in regional brain activation by images of high-calorie foods. Regions including the amygdala, nucleus accumbens, and dorsal striatum may alter perception of, and reduce motivation to consume, energy-rich foods, ultimately driving food choice. This trial was registered at clinicaltrials.gov as NCT01631045.
Collapse
Affiliation(s)
- Sonya Mehta
- Departments of Radiology and the Diabetes and Obesity Center of Excellence, University of Washington, Seattle, WA, USA
| | | | | | | | | | | | | |
Collapse
|
27
|
Tyagi V, Kutaiba N, Yates M. Acute Pulmonary Embolism (PE)—Is Echocardiography Underutilised in Regional Australia. Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
28
|
Tyagi V, Jayasuriya C. Discharge Management of Patients with Acute Coronary Syndrome—An Outer Metropolitan Hospital Experience in Queensland. Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
29
|
|
30
|
Tyagi P, Tyagi V, Yoshimura N, Chancellor M, Yamaguchi O. Beta3-adrenoceptor agonists for the treatment of overactive bladder. DRUG FUTURE 2009. [DOI: 10.1358/dof.2009.34.8.1401947] [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: 04/08/2023]
|
31
|
Bharaj P, Chahar H, John C, Tyagi V, Banerjee S, Kabra S, Sullender W, Broor S. Real Time RT-PCR for Quantitation of Human Metapneumovirus Virus from Children with Acute Respiratory Tract Infections. Int J Infect Dis 2008. [DOI: 10.1016/j.ijid.2008.05.164] [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: 11/17/2022] Open
|
32
|
Varughese S, Jain S, Gupta N, Singh S, Tyagi V, Puliyel JM. Magnitude of the problem of retinopathy of prematurity. experience in a large maternity unit with a medium size level-3 nursery. Indian J Ophthalmol 2001; 49:187-8. [PMID: 15887728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023] Open
Abstract
This report describes the extent and severity of retinopathy of prematurity (ROP) in a large maternity unit. The screening of 79 preterm babies showed that ophthalmic examinations should become an important part of neonatal care.
Collapse
Affiliation(s)
- S Varughese
- Department of Ophthalmology, St. Stephen's Hospital, Tis Hazari, Delhi - 110 054.
| | | | | | | | | | | |
Collapse
|