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Giri S, Bhrugumalla S, Gangadhar S, Angadi S. Comparative outcome of single versus two double-pigtail stents for endoscopic drainage of pancreatic fluid collections with minimal necrosis: a retrospective analysis. Acta Gastroenterol Belg 2024; 87:1-5. [PMID: 38431784 DOI: 10.51821/87.1.12118] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/05/2024]
Abstract
Background Endoscopic ultrasound (EUS)-guided cystogastrostomy is the treatment of choice for managing symptomatic pancreatic fluid collections (PFC). However, studies on the number of stents for optimal drainage of PFCs are limited. Hence, the present study was conducted to compare the outcome of single versus two double-pigtail stents for endoscopic drainage of PFCs. Methods This is a single-center, retrospective analysis of patients undergoing endoscopic drainage of PFCs with minimal necrosis (pseudocyst or walled-off necrosis with <30% solid content) at a tertiary center in South India from October 2020 to October 2022. Post-procedure, patients were followed up for clinical improvement, and stents were removed after documentation of cyst size reduction on imaging. Results Sixty-three patients (82.5% males, median age: 34 years) fulfilling the selection criteria were included. For single stent placement (n = 47), stents of size 8.5 Fr or 10 Fr were used, while for placement of two stents (n = 16), 7 Fr stents were used. The technical success rate was 100%. Intraprocedural and early postprocedural adverse events (all mild to moderate) were comparable between the groups (17.0% with single stent vs. 25.0% with two stents, p = NS). Clinical success was achieved in 93.6% of patients, with no difference between both groups. Three patients in the single stent group required additional procedures. All patients underwent successful stent removal after a median follow-up of 14 weeks. Conclusion A single pigtail stent of 8.5 Fr or 10 Fr size for EUSguided cystogastrostomy provides efficacy and safety similar to that of two stents.
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Affiliation(s)
- S Giri
- Department of Gastroenterology, Nizam's Institute of Medical Sciences, Hyderabad, India
| | - S Bhrugumalla
- Department of Gastroenterology, Nizam's Institute of Medical Sciences, Hyderabad, India
| | - S Gangadhar
- Department of Gastroenterology, Nizam's Institute of Medical Sciences, Hyderabad, India
| | - S Angadi
- Department of Gastroenterology, Nizam's Institute of Medical Sciences, Hyderabad, India
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Giri S, Singh A, Kolhe K, Kale A, Shukla A. Reply: Portal vein thrombosis in cirrhosis: exploring the uncharted waters. J Gastroenterol Hepatol 2023; 38:2254. [PMID: 37804045 DOI: 10.1111/jgh.16378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 09/25/2023] [Indexed: 10/08/2023]
Affiliation(s)
- S Giri
- Department of Gastroenterology, Nizam's Institute of Medical Sciences, Hyderabad, India
| | - A Singh
- Department of Gastroenterology, Seth GS Medical College and KEM Hospital, Mumbai, India
| | - K Kolhe
- Department of Gastroenterology, Narayana Hospital, Nanded, India
| | - A Kale
- Department of Gastroenterology, Seth GS Medical College and KEM Hospital, Mumbai, India
| | - A Shukla
- Department of Gastroenterology, Seth GS Medical College and KEM Hospital, Mumbai, India
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3
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Giri S, Sundaram S. Does the wire diameter really determine the outcomes in cold snare polypectomy? J Gastroenterol Hepatol 2023; 38:665. [PMID: 36866450 DOI: 10.1111/jgh.16160] [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: 01/21/2023] [Accepted: 02/27/2023] [Indexed: 03/04/2023]
Affiliation(s)
- S Giri
- Department of Gastroenterology, Nizam's Institute of Medical Sciences, Hyderabad, India
| | - S Sundaram
- Department of Digestive Diseases and Clinical Nutrition, Tata Memorial Hospital, Mumbai, India
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4
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Yadav PD, Kumar S, Agarwal K, Jain M, Patil DR, Maithal K, Mathapati B, Giri S, Mohandas S, Shete A, Sapkal G, Patil DY, Dey A, Chandra H, Deshpande G, Gupta N, Abraham P, Kaushal H, Sahay RR, Tripathy A, Nyayanit D, Jain R, Kumar A, Sarkale P, Baradkar S, Rajanathan C, Raju HP, Patel S, Shah N, Dwivedi P, Singh D. Needle-free injection system delivery of ZyCoV-D DNA vaccine demonstrated improved immunogenicity and protective efficacy in rhesus macaques against SARS-CoV-2. J Med Virol 2023; 95:e28484. [PMID: 36625386 DOI: 10.1002/jmv.28484] [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: 07/04/2022] [Revised: 09/12/2022] [Accepted: 01/06/2023] [Indexed: 01/11/2023]
Abstract
The apprehension of needles related to injection site pain, risk of transmitting bloodborne pathogens, and effective mass immunization have led to the development of a needle-free injection system (NFIS). Here, we evaluated the efficacy of the NFIS and needle injection system (NIS) for the delivery and immunogenicity of DNA vaccine candidate ZyCoV-D in rhesus macaques against SARS-CoV-2 infection. Briefly, 20 rhesus macaques were divided into 5 groups (4 animals each), that is, I (1 mg dose by NIS), II (2 mg dose by NIS), III (1 mg dose by NFIS), IV (2 mg dose by NFIS) and V (phosphate-buffer saline [PBS]). The macaques were immunized with the vaccine candidates/PBS intradermally on Days 0, 28, and 56. Subsequently, the animals were challenged with live SARS-CoV-2 after 15 weeks of the first immunization. Blood, nasal swab, throat swab, and bronchoalveolar lavage fluid specimens were collected on 0, 1, 3, 5, and 7 days post infection from each animal to determine immune response and viral clearance. Among all the five groups, 2 mg dose by NFIS elicited significant titers of IgG and neutralizing antibody after immunization with enhancement in their titers postvirus challenge. Besides this, it also induced increased lymphocyte proliferation and cytokine response. The minimal viral load post-SARS-CoV-2 challenge and significant immune response in the immunized animals demonstrated the efficiency of NFIS in delivering 2 mg ZyCoV-D vaccine candidate.
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Affiliation(s)
- Pragya D Yadav
- Indian Council of Medical Research-National Institute of Virology, Pune, Maharashtra, India
| | - Sanjay Kumar
- Department of Neurosurgery, Command Hospital [Southern Command], Armed Forces Medical College [AFMC], Pune, India
| | - Kshitij Agarwal
- Department of Respiratory Medicine, University college of Medical Scieneces and Guru Teg Bahadur Hospital, University of Delhi, New Delhi, India
| | - Mukul Jain
- Zydus Research Centre, Cadila Healthcare Limited, Ahmedabad, Gujarat, India
| | - Dilip R Patil
- Indian Council of Medical Research-National Institute of Virology, Pune, Maharashtra, India
| | - Kapil Maithal
- Vaccine Technology Centre, Cadila Healthcare Limited, Ahmedabad, Gujarat, India
| | - Basavaraj Mathapati
- Indian Council of Medical Research-National Institute of Virology, Pune, Maharashtra, India
| | - Suresh Giri
- Zydus Research Centre, Cadila Healthcare Limited, Ahmedabad, Gujarat, India
| | - Sreelekshmy Mohandas
- Indian Council of Medical Research-National Institute of Virology, Pune, Maharashtra, India
| | - Anita Shete
- Indian Council of Medical Research-National Institute of Virology, Pune, Maharashtra, India
| | - Gajanan Sapkal
- Indian Council of Medical Research-National Institute of Virology, Pune, Maharashtra, India
| | - Deepak Y Patil
- Indian Council of Medical Research-National Institute of Virology, Pune, Maharashtra, India
| | - Ayan Dey
- Vaccine Technology Centre, Cadila Healthcare Limited, Ahmedabad, Gujarat, India
| | - Harish Chandra
- Vaccine Technology Centre, Cadila Healthcare Limited, Ahmedabad, Gujarat, India
| | - Gururaj Deshpande
- Indian Council of Medical Research-National Institute of Virology, Pune, Maharashtra, India
| | | | - Priya Abraham
- Indian Council of Medical Research-National Institute of Virology, Pune, Maharashtra, India
| | - Himanshu Kaushal
- Indian Council of Medical Research-National Institute of Virology, Pune, Maharashtra, India
| | - Rima R Sahay
- Indian Council of Medical Research-National Institute of Virology, Pune, Maharashtra, India
| | - Anuradha Tripathy
- Indian Council of Medical Research-National Institute of Virology, Pune, Maharashtra, India
| | - Dimpal Nyayanit
- Indian Council of Medical Research-National Institute of Virology, Pune, Maharashtra, India
| | - Rajlaxmi Jain
- Indian Council of Medical Research-National Institute of Virology, Pune, Maharashtra, India
| | - Abhimanyu Kumar
- Indian Council of Medical Research-National Institute of Virology, Pune, Maharashtra, India
| | - Prasad Sarkale
- Indian Council of Medical Research-National Institute of Virology, Pune, Maharashtra, India
| | - Shreekant Baradkar
- Indian Council of Medical Research-National Institute of Virology, Pune, Maharashtra, India
| | | | - Hari Prasad Raju
- Vaccine Technology Centre, Cadila Healthcare Limited, Ahmedabad, Gujarat, India
| | - Satish Patel
- Zydus Research Centre, Cadila Healthcare Limited, Ahmedabad, Gujarat, India
| | - Niraj Shah
- Zydus Research Centre, Cadila Healthcare Limited, Ahmedabad, Gujarat, India
| | - Pankaj Dwivedi
- Zydus Research Centre, Cadila Healthcare Limited, Ahmedabad, Gujarat, India
| | - Dharmendra Singh
- Indian Council of Medical Research-National Institute of Virology, Pune, Maharashtra, India
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Ubersax C, Harmon C, Irvin M, Bhatia S, Williams G, Giri S. Impact of baseline frailty on Early Mortality among older adults with Gastrointestinal Malignancies: A nested Case Control Study. J Geriatr Oncol 2022. [DOI: 10.1016/s1879-4068(22)00409-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: 11/05/2022]
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Harmon C, Al-Obaidi M, Giri S, Zubkoff L, Outlaw D, Khushman M, Bhatia S, Williams G. Implementation of the Web-Enabled Cancer & Aging Resilience Evaluation (WeCARE) in an Outpatient Oncology Setting. J Geriatr Oncol 2022. [DOI: 10.1016/s1879-4068(22)00351-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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7
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Roychowdhury A, Dalui T, Ghose P, Mahatha S, Wind N, Rossnagel K, Majumdar S, Giri S. Coexisting ferromagnetic component and negative magnetoresistance at low temperature in single crystals of the VdW material GaGeTe. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123106] [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: 11/16/2022]
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8
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Giri S, Angadi S, Jadhav R. Stopping rules for 5-ASA in UC need to be redefined. J Gastroenterol Hepatol 2022; 37:1404. [PMID: 35514184 DOI: 10.1111/jgh.15884] [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: 04/20/2022] [Accepted: 05/02/2022] [Indexed: 12/09/2022]
Affiliation(s)
- S Giri
- Department of Gastroenterology, Nizam's Institute of Medical Sciences, Hyderabad, India
| | - S Angadi
- Department of Gastroenterology, Nizam's Institute of Medical Sciences, Hyderabad, India
| | - R Jadhav
- Department of Gastroenterology, Lokmanya Tilak Municipal Medical College and General Hospital, Mumbai, India
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9
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Giri S, Agarwal D, Afzalpurkar S. GGT dynamic for advanced fibrosis in NAFLD: Novel but not convincing. J Gastroenterol Hepatol 2022; 37:1406. [PMID: 35639554 DOI: 10.1111/jgh.15908] [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: 05/14/2022] [Revised: 05/19/2022] [Accepted: 05/29/2022] [Indexed: 12/09/2022]
Affiliation(s)
- S Giri
- Department of Gastroenterology, Nizam's Institute of Medical Sciences, Hyderabad, India
| | - D Agarwal
- Department of Gastroenterology, PACE Hospital, Hyderabad, India
| | - S Afzalpurkar
- Institute of Gastrosciences and Liver, Apollo Multispecialty Hospital, Kolkata, India
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10
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Affiliation(s)
- S Giri
- Department of Gastroenterology, Nizam's Institute of Medical Sciences, Hyderabad, India
| | - S Angadi
- Department of Gastroenterology, Nizam's Institute of Medical Sciences, Hyderabad, India
| | - D Agrawal
- Department of Gastroenterology, PACE Hospital, Hyderabad, India
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11
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Giri S, Darak H, Kasturi S. Improving the outcome of gastrointestinal bleeding in ESRD patients: The need of the hour. J Gastroenterol Hepatol 2022; 37:773. [PMID: 35132698 DOI: 10.1111/jgh.15794] [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: 01/24/2022] [Accepted: 01/30/2022] [Indexed: 12/09/2022]
Affiliation(s)
- S Giri
- Department of Gastroenterology, Nizam's Institute of Medical Sciences, Hyderabad, India
| | - H Darak
- Department of Gastroenterology, Seth GS Medical College and KEM Hospital, Mumbai, India
| | - S Kasturi
- Gastrocare, Liver and Digestive Disease Center, Bhopal, India
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12
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Indra A, Mukherjee S, Gutowski O, Zimmermann MV, Majumdar S, Giri S. Structural correlation to ferroelectric order, non-Griffiths like phase and magnetocaloric effect in YbCrO 4. J Phys Condens Matter 2022; 34:155402. [PMID: 35073536 DOI: 10.1088/1361-648x/ac4e46] [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] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 01/24/2022] [Indexed: 06/14/2023]
Abstract
We report a ferroelectric order around ∼99 K (TFE), which is considerably above the long range ferrimagnetic order at 25 K (TN). The value of saturation electric polarization is considerable as ∼570μC m-2for a poling field of 5 kV cm-1. The ferroelectric order is associated with a significant magnetoelectric coupling below ∼90 K. A weak signature ofTFEis observed in the dielectric constant, which is associated with a linear magnetodielectric response at 18 K(<TN). A transition to a polar structure has been correlated with the occurrence of ferroelectric order. A non-Griffiths like phase is observed around ∼48 K, which is also linked with the structural distortion. A reasonable value of the magnetic entropy change of 5.07 J Kg-1 K-1is noted atTNfor a change in field of 50 kOe, which involves a strong magnetoelastic coupling. The results indicate considerable structural instabilities, which is linked with the observed multifunctional properties of YbCrO4.
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Affiliation(s)
- A Indra
- School of Physical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
- Department of Physics, Srikrishna College, Bagula, Nadia, WB 741502, India
| | - S Mukherjee
- School of Physical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - O Gutowski
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22603 Hamburg, Germany
| | - M V Zimmermann
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22603 Hamburg, Germany
| | - S Majumdar
- School of Physical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - S Giri
- School of Physical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
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13
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Giri S. Increasing the recommended colon withdrawal time to improve colonoscopy quality: Is it high time? J Gastroenterol Hepatol 2022; 37:406. [PMID: 34859502 DOI: 10.1111/jgh.15747] [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: 10/30/2021] [Accepted: 11/18/2021] [Indexed: 12/09/2022]
Affiliation(s)
- S Giri
- Department of Gastroenterology, Seth GS Medical College and KEM Hospital, Mumbai, India
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14
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Yadav PD, Mendiratta SK, Mohandas S, Singh AK, Abraham P, Shete A, Bandyopadhyay S, Kumar S, Parikh A, Kalita P, Sharma V, Pandya H, Patel CG, Patel M, Soni S, Giri S, Jain M. ZRC3308 Monoclonal Antibody Cocktail Shows Protective Efficacy in Syrian Hamsters against SARS-CoV-2 Infection. Viruses 2021; 13:v13122424. [PMID: 34960695 PMCID: PMC8706527 DOI: 10.3390/v13122424] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/11/2021] [Accepted: 11/24/2021] [Indexed: 11/16/2022] Open
Abstract
We have developed a monoclonal antibody (mAb) cocktail (ZRC-3308) comprising of ZRC3308-A7 and ZRC3308-B10 in the ratio 1:1 for COVID-19 treatment. The mAbs were designed to have reduced immune effector functions and increased circulation half-life. mAbs showed good binding affinities to non-competing epitopes on RBD of SARS-CoV-2 spike protein and were found neutralizing SARS-CoV-2 variants B.1, B.1.1.7, B.1.351, B.1.617.2, and B.1.617.2 AY.1 in vitro. The mAb cocktail demonstrated effective prophylactic and therapeutic activity against SARS-CoV-2 infection in Syrian hamsters. The antibody cocktail appears to be a promising candidate for prophylactic use and for therapy in early COVID-19 cases that have not progressed to severe disease.
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MESH Headings
- Animals
- Antibodies, Monoclonal, Humanized/immunology
- Antibodies, Monoclonal, Humanized/therapeutic use
- Antibodies, Neutralizing/immunology
- Antibodies, Neutralizing/therapeutic use
- Antibody Affinity
- Binding Sites
- COVID-19/prevention & control
- COVID-19/therapy
- Cricetinae
- Disease Models, Animal
- Epitopes
- Humans
- Immunization, Passive
- Mesocricetus
- Mutation
- SARS-CoV-2/genetics
- SARS-CoV-2/immunology
- Spike Glycoprotein, Coronavirus/genetics
- Spike Glycoprotein, Coronavirus/immunology
- COVID-19 Serotherapy
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Affiliation(s)
- Pragya D. Yadav
- Indian Council of Medical Research-National Institute of Virology, Pune 411021, India; (S.M.); (P.A.); (A.S.)
- Correspondence: ; Tel.: +91-20-2600-6111; Fax: +91-20-2612-2669
| | - Sanjeev Kumar Mendiratta
- Zydus Research Centre, Cadila Healthcare Limited, Ahmedabad 382481, India; (S.K.M.); (A.K.S.); (S.B.); (A.P.); (P.K.); (V.S.); (H.P.); (C.G.P.); (M.P.); (S.S.); (S.G.); (M.J.)
| | - Sreelekshmy Mohandas
- Indian Council of Medical Research-National Institute of Virology, Pune 411021, India; (S.M.); (P.A.); (A.S.)
| | - Arun K. Singh
- Zydus Research Centre, Cadila Healthcare Limited, Ahmedabad 382481, India; (S.K.M.); (A.K.S.); (S.B.); (A.P.); (P.K.); (V.S.); (H.P.); (C.G.P.); (M.P.); (S.S.); (S.G.); (M.J.)
| | - Priya Abraham
- Indian Council of Medical Research-National Institute of Virology, Pune 411021, India; (S.M.); (P.A.); (A.S.)
| | - Anita Shete
- Indian Council of Medical Research-National Institute of Virology, Pune 411021, India; (S.M.); (P.A.); (A.S.)
| | - Sanjay Bandyopadhyay
- Zydus Research Centre, Cadila Healthcare Limited, Ahmedabad 382481, India; (S.K.M.); (A.K.S.); (S.B.); (A.P.); (P.K.); (V.S.); (H.P.); (C.G.P.); (M.P.); (S.S.); (S.G.); (M.J.)
| | - Sanjay Kumar
- Department of Neurosurgery, Command Hospital (Southern Command), Armed Forces Medical College (AFMC), Pune 411040, India;
| | - Aashini Parikh
- Zydus Research Centre, Cadila Healthcare Limited, Ahmedabad 382481, India; (S.K.M.); (A.K.S.); (S.B.); (A.P.); (P.K.); (V.S.); (H.P.); (C.G.P.); (M.P.); (S.S.); (S.G.); (M.J.)
| | - Pankaj Kalita
- Zydus Research Centre, Cadila Healthcare Limited, Ahmedabad 382481, India; (S.K.M.); (A.K.S.); (S.B.); (A.P.); (P.K.); (V.S.); (H.P.); (C.G.P.); (M.P.); (S.S.); (S.G.); (M.J.)
| | - Vibhuti Sharma
- Zydus Research Centre, Cadila Healthcare Limited, Ahmedabad 382481, India; (S.K.M.); (A.K.S.); (S.B.); (A.P.); (P.K.); (V.S.); (H.P.); (C.G.P.); (M.P.); (S.S.); (S.G.); (M.J.)
| | - Hardik Pandya
- Zydus Research Centre, Cadila Healthcare Limited, Ahmedabad 382481, India; (S.K.M.); (A.K.S.); (S.B.); (A.P.); (P.K.); (V.S.); (H.P.); (C.G.P.); (M.P.); (S.S.); (S.G.); (M.J.)
| | - Chirag G. Patel
- Zydus Research Centre, Cadila Healthcare Limited, Ahmedabad 382481, India; (S.K.M.); (A.K.S.); (S.B.); (A.P.); (P.K.); (V.S.); (H.P.); (C.G.P.); (M.P.); (S.S.); (S.G.); (M.J.)
| | - Mihir Patel
- Zydus Research Centre, Cadila Healthcare Limited, Ahmedabad 382481, India; (S.K.M.); (A.K.S.); (S.B.); (A.P.); (P.K.); (V.S.); (H.P.); (C.G.P.); (M.P.); (S.S.); (S.G.); (M.J.)
| | - Swagat Soni
- Zydus Research Centre, Cadila Healthcare Limited, Ahmedabad 382481, India; (S.K.M.); (A.K.S.); (S.B.); (A.P.); (P.K.); (V.S.); (H.P.); (C.G.P.); (M.P.); (S.S.); (S.G.); (M.J.)
| | - Suresh Giri
- Zydus Research Centre, Cadila Healthcare Limited, Ahmedabad 382481, India; (S.K.M.); (A.K.S.); (S.B.); (A.P.); (P.K.); (V.S.); (H.P.); (C.G.P.); (M.P.); (S.S.); (S.G.); (M.J.)
| | - Mukul Jain
- Zydus Research Centre, Cadila Healthcare Limited, Ahmedabad 382481, India; (S.K.M.); (A.K.S.); (S.B.); (A.P.); (P.K.); (V.S.); (H.P.); (C.G.P.); (M.P.); (S.S.); (S.G.); (M.J.)
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Pasala M, Anabtawi N, Grimshaw A, Clark D, Ubersax C, Williams G, Giri S. The impact of sarcopenia on survival among adults with hematologic malignancies: A systematic review and meta-analysis. J Geriatr Oncol 2021. [DOI: 10.1016/s1879-4068(21)00359-3] [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: 10/19/2022]
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16
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Rangarajan S, Clark D, Ubersax C, Ye S, Bal S, Godby K, Ravi G, Costa L, Williams G, Bhatia S, Giri S. Discordance between simplified Frailty Score and the IMWG frailty score among newly diagnosed older adults with Multiple Myeloma: Findings from the CARE-HEME registry. J Geriatr Oncol 2021. [DOI: 10.1016/s1879-4068(21)00453-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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17
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Giri S, Chenn LM, Romero-Ortuno R. 180 NURSING HOMES DURING THE COVID-19 PANDEMIC: A NARRATIVE REVIEW OF CHALLENGES AND RESPONSES. Age Ageing 2021. [PMCID: PMC8690028 DOI: 10.1093/ageing/afab219.180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background COVID-19 has caused unprecedented challenges in nursing homes. In this narrative review, we aimed to describe factors that contributed to the spread and mortality of COVID-19 in nursing homes and provide an overview of responses that were implemented to try to overcome such challenges. Methods The MeSH terms ‘Nursing homes’ and ‘COVID-19’ were searched in MEDLINE Ovid, and English language articles were retrieved that were published between 1 March 2020 and 31 January 2021. Article titles and abstracts were screened by two reviewers, and the results of included articles were grouped by themes. Results The search retrieved 348 articles, of which 76 were included in the thematic review. 8 articles related to COVID-19 disease characteristics (e.g. asymptomatic transmission), 24 to resident-related factors (e.g. comorbidities, nutrition, cognition), 13 to facility characteristics (e.g. physical space, occupancy, for-profit status), 21 to staffing (e.g. staffing levels, staff-to-resident ratio, staff multi-employment), and 10 to external factors (e.g. availability of personal protective equipment, prevailing health and social care policies). In terms of responses, identified themes included widespread testing, isolation and cohorting of residents, staff protection and support, promotion of residents’ well-being, and technological innovations. Conclusion COVID-19 exerted severe challenges on the nursing home population and its staff. Both internal and external factors predisposed nursing homes to an increased propensity of spread. Numerous strategies were employed to attempt to mitigate the negative impacts. Substantial learning occurred that may not only aid future pandemic preparedness but improve quality of care for nursing home residents at all times.
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Affiliation(s)
- S Giri
- School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - L M Chenn
- School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - R Romero-Ortuno
- School of Medicine, Trinity College Dublin, Dublin, Ireland,Mercer's Institute of Successful Ageing (MISA), St. James's Hospital, Dublin, Ireland,Global Brain Health Institute, Trinity College Dublin, Dublin, Ireland
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Abstract
Introduction: Solid waste management is a major issue in Nepal with Kathmandu valley generating the highest amount of solid waste. After recovery, the solid waste generated in Kathmandu valley is transferred to the Sisdol landfill site. There are waste workers in Sisdol landfill site who sustain their livelihood by collecting recyclables from those wastes. Personal protective equipment (PPE) is necessary to protect the frontline waste workers against infection. In addition, the waste workers need to know the proper usage of PPE in order to protect themselves from contamination. This study aimed to assess the awareness and proper usage of PPE along with the challenges faced by the waste workers at Sisdol landfill site.
Methods: A descriptive cross-sectional study was conducted to collect data from landfill waste workers of Sisdol located at Kakani Rural Municipality in Nuwakot district of Nepal. A convenience sampling method was used based on the availability of landfill waste workers on that day and their willingness to participate. The data was collected using the structured questionnaire and personal interview of available waste workers.
Results: The study comprised of 65% female and 35% male waste workers. The highest percentage of waste workers belong to 27-37 age group occupying 43% of total respondents. Around 92% waste workers had participated in any orientation/training or session related to PPE and its usage. About 60% landfill waste workers were found only using mask and gloves.
Conclusion: There is small number of waste workers who wish to wear full set of PPE. Most of them only like to wear mask and gloves. The gender, age group and the education level of waste workers had no association with the usage of PPE during the work.
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Croghan S, Riogh AN, Madden A, Considine S, Rochester M, Finch W, Carrie A, Mahhmalji W, Elhadi W, Thursby H, Pearce I, Modgil V, Noweir H, Cunnane C, Giri S, Davis N, Mulvihill J, Walsh M, Flood H. Incidence of iatrogenic urethral catheterisation injuries: A prospective multicentre audit. EUR UROL SUPPL 2021. [DOI: 10.1016/s2666-1683(21)00196-8] [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: 11/25/2022] Open
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Chatterjee A, Indra A, Gutowski O, Zimmerman MV, Majumdar S, Giri S. Significant magneto-elastic coupling at Griffiths-like phase boundaries in low dimensional oxides, ASb 2O 6( A=Ni and Mn). J Phys Condens Matter 2021; 33:195701. [PMID: 33542167 DOI: 10.1088/1361-648x/abe350] [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] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 02/04/2021] [Indexed: 06/12/2023]
Abstract
The compounds, NiSb2O6(NSO) and MnSb2O6(MSO) attract the community for the quasi one-dimensional and layered structure composed of Ni2+and Mn2+, which orders antiferromagnetically atTN= 6.7 and 12 K, respectively. Here, we report the Griffiths-like phase much aboveTNin the range of 37-85 K and 25-80 K for NSO and MSO, respectively. The dc magnetization results indicate the Griffiths-like phase, following the modified Curie-Weiss law. The magneto-capacitive responses for both the compounds show anomalies at the onset of the Griffiths-like phase. Intriguingly, the low temperature synchrotron diffraction results are conclusive for determining the singularities for both the compounds. Interplay between the low-dimensionality, magnetic frustration, and magneto-elastic coupling correlates the observed short range ordered state, which is suggested as a Griffiths-like phase, aboveTNfor both the compounds.
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Affiliation(s)
- A Chatterjee
- School of Physical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - A Indra
- School of Physical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
- Department of Physics, Sri Krishna College, Bagula, Nadia, W.B. 741502, India
| | - O Gutowski
- Deutsches Elektronen-Synchrotron, Notkestraβe 85, 22607 Hamburg, Germany
| | - M V Zimmerman
- Deutsches Elektronen-Synchrotron, Notkestraβe 85, 22607 Hamburg, Germany
| | - S Majumdar
- School of Physical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - S Giri
- School of Physical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
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Pola S, Shah SR, Pingali H, Zaware P, Thube B, Makadia P, Patel H, Bandyopadhyay D, Rath A, Giri S, Patel JH, Ranvir RK, Sundar SR, Patel H, Kumar J, Jain MR. Discovery of a potent G-protein-coupled receptor 119 agonist for the treatment of type 2 diabetes. Bioorg Med Chem 2021; 35:116071. [PMID: 33611013 DOI: 10.1016/j.bmc.2021.116071] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 12/07/2020] [Revised: 01/30/2021] [Accepted: 02/04/2021] [Indexed: 02/07/2023]
Abstract
The ever-growing prevalence of Type-2 diabetes in the world has an urgent need for multiple orally effective agents that can regulate glucose homeostasis. G-Protein coupled receptor 119 (GPR 119) agonists have demonstrated the glucose-dependent insulin secretion and showed beneficial effects on glycemic control in humans and/or relevant animal models. Herein, we describe our efforts towards identification of a potent and oral GPR 119 agonist 13c (ZY-G19), which showed in vitro potency in the cell-based assay and in vivo efficacy without exerting any significant signs of toxicity in relevant animal models.
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Affiliation(s)
- Suresh Pola
- Zydus Research Centre, Sarkhej-Bavla N.H 8A Moraiya, Ahmedabad 382210, India; Department of Chemistry, Faculty of Science, M. S. University of Baroda, Vadodara 390002, India.
| | - Shailesh R Shah
- Department of Chemistry, Faculty of Science, M. S. University of Baroda, Vadodara 390002, India.
| | - Harikishore Pingali
- Zydus Research Centre, Sarkhej-Bavla N.H 8A Moraiya, Ahmedabad 382210, India
| | - Pandurang Zaware
- Zydus Research Centre, Sarkhej-Bavla N.H 8A Moraiya, Ahmedabad 382210, India
| | - Baban Thube
- Zydus Research Centre, Sarkhej-Bavla N.H 8A Moraiya, Ahmedabad 382210, India
| | - Pankaj Makadia
- Zydus Research Centre, Sarkhej-Bavla N.H 8A Moraiya, Ahmedabad 382210, India
| | - Hoshang Patel
- Zydus Research Centre, Sarkhej-Bavla N.H 8A Moraiya, Ahmedabad 382210, India
| | | | - Akshyaya Rath
- Zydus Research Centre, Sarkhej-Bavla N.H 8A Moraiya, Ahmedabad 382210, India
| | - Suresh Giri
- Zydus Research Centre, Sarkhej-Bavla N.H 8A Moraiya, Ahmedabad 382210, India
| | - Jitendra H Patel
- Zydus Research Centre, Sarkhej-Bavla N.H 8A Moraiya, Ahmedabad 382210, India
| | - R K Ranvir
- Zydus Research Centre, Sarkhej-Bavla N.H 8A Moraiya, Ahmedabad 382210, India
| | - S R Sundar
- Zydus Research Centre, Sarkhej-Bavla N.H 8A Moraiya, Ahmedabad 382210, India
| | - Harilal Patel
- Zydus Research Centre, Sarkhej-Bavla N.H 8A Moraiya, Ahmedabad 382210, India
| | - Jeevan Kumar
- Zydus Research Centre, Sarkhej-Bavla N.H 8A Moraiya, Ahmedabad 382210, India
| | - Mukul R Jain
- Zydus Research Centre, Sarkhej-Bavla N.H 8A Moraiya, Ahmedabad 382210, India
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Giri S, Kalaivanan M, Iturriza-Gomara M, Kang G. Circulation of GII.4 norovirus strains in children <5 years hospitalized at a tertiary care teaching hospital in south India: 2005–2018. Int J Infect Dis 2020. [DOI: 10.1016/j.ijid.2020.09.1305] [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: 11/25/2022] Open
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Praharaj I, Benny B, Soumya R, Hemavathi G, Giri S, Reddy S, Zondervenni Z, Manohar B, Lopman B, Kang G. Enteric virus detection from acute gastroenteritis cases in a tertiary care hospital before and after rotavirus vaccine introduction, India: 2012–2019. Int J Infect Dis 2020. [DOI: 10.1016/j.ijid.2020.09.1316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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24
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Srinivasan M, Giri S, Natarajan SK, Kumar N, Mohan V, Grassly N, John J, Kang G. Stool shedding of Salmonella Typhi in children with blood culture-confirmed typhoid fever. Int J Infect Dis 2020. [DOI: 10.1016/j.ijid.2020.09.337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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25
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Giri S, Kalaivanan M, Hemavathy P, Iturriza-Gomara M, Kang G. Norovirus and rotavirus gastroenteritis in children <5 years in the inpatient and outpatient settings of a tertiary care hospital in south India. Int J Infect Dis 2020. [DOI: 10.1016/j.ijid.2020.09.1354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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26
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Satyam L, Poddutoori R, Thiyagarajan S, Mukherjee S, Kaza L, Charamanna K, Marappan S, Samiulla D, Tiwari N, Devaraja T, Aravind A, Dhudashiya A, Booher R, Daginakatte G, Antony T, Chelur S, Nellore K, Giri S, Ramachandra M, Samajdar S. Potent anti-tumor activity of AUR102, a selective covalent inhibitor of CDK7. Eur J Cancer 2020. [DOI: 10.1016/s0959-8049(20)31201-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Udumula M, Dimitrova I, Sakr S, Buekers T, Giri S, Rattan R. Omega-3 lipid metabolites as mediators of metformin’s anti-proliferative effect in ovarian cancer. Gynecol Oncol 2020. [DOI: 10.1016/j.ygyno.2020.05.148] [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: 10/23/2022]
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Rattan R, Dimitrova I, Udumula M, Buekers T, Giri S. Calorie restriction for ovarian cancer reduction. Gynecol Oncol 2020. [DOI: 10.1016/j.ygyno.2020.05.137] [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: 11/16/2022]
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Dalui TK, Ghose PK, Majumdar S, Giri S. Interplay between positive magnetoresistance and thermoelectric properties by tuning carrier concentration in Sb 2-xSn xTe 3( x⩽ 0.05) crystals. J Phys Condens Matter 2020; 32:435601. [PMID: 32634794 DOI: 10.1088/1361-648x/aba386] [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] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 07/07/2020] [Indexed: 06/11/2023]
Abstract
We report transport properties of Sb2-xSnxTe3(x⩽ 0.05) single crystals, where the tuning of the charge carrier densities via Sn doping significantly improves the magnetoresistance (MR) and the thermoelectric (TE) properties. The MR increases significantly at 2 K forx= 0.01, which reduces considerably with further Sn doping atx= 0.05. The MR results below 90 K forx= 0.01 satisfy the semi-classical two-band approach of Kohler's rule, which does not satisfy the MR results forx= 0.05. At 300 K, the Seebeck coefficient (S) is positive and small forx= 0.01 and it changes the sign with the further increase in Sn doping atx= 0.05 at 300 K. The value of |S| is considerable with an enhancement of the thermoelectric power factor compared to the value forx= 0.01 at 300 K. Analysis of the Hall conductivity indicates the interplay between carrier mobilities and densities, leading to the tuning of MR and TE properties with Sn doping. These results demonstrate that the p-type Sb2Te3becomes n-type with a suitable doping engineering.
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Affiliation(s)
- T K Dalui
- School of Physical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - P K Ghose
- School of Physical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - S Majumdar
- School of Physical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - S Giri
- School of Physical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
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Rattan R, Raja V, Buekers T, Hamid S, Elshaikh M, Giri S, Munkarah A. STAT3 promotes ovarian cancer growth and chemoresistance by modulating its energy metabolism. Gynecol Oncol 2019. [DOI: 10.1016/j.ygyno.2019.04.222] [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: 10/26/2022]
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31
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Rattan R, Buekers T, Raja V, Hijaz M, Hanna R, Hamid S, Giri S, Munkarah A. Role of MCP-1 in promoting adiposity-driven ovarian cancer. Gynecol Oncol 2019. [DOI: 10.1016/j.ygyno.2019.04.223] [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: 10/26/2022]
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32
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Indra A, Dey K, Bhattacharyya A, Berlie A, Giri S. Unveiling spin-glass transition and antiferromagnetic order by μSR studies in spin-chain Sm 2BaNiO 5. J Phys Condens Matter 2019; 31:165801. [PMID: 30681979 DOI: 10.1088/1361-648x/ab01e6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We report the zero-field and longitudinal field muon spin relaxation studies in a spin-chain compound Sm2BaNiO5. Two magnetic transitions, that have not been previously detected by the heat capacity and magnetization measurements, are confirmed at 46 and 9 K. The antiferromagnetic order is suggested at 46 K. Analysis of the muon spin polarization unveils the spin-glass transition at 9 K. Time-field scaling relation of the muon spin polarization verifies the spin-spin autocorrelation function following the cut-off power law, which is approximated by the Ogielski form, as employed numerically for characterizing the spin-glasses.
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Affiliation(s)
- A Indra
- School of Physical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India. Department of Physics, Srikrishna College, Bagula, Nadia, W. B., 741502, India
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Dewangan S, Barik T, Mishra S, Mawatwal S, Kumari S, Giri S, Das S, Dhiman R, Wölper C, Chatterjee S. Half sandwich based rhodamine - hydrazone single molecule probe: Light responsive, metal sensing and imaging properties. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4612] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- S. Dewangan
- Department of Chemistry; National Institute of Technology Rourkela; Orissa 769008 India
| | - T. Barik
- Department of Chemistry; National Institute of Technology Rourkela; Orissa 769008 India
| | - S. Mishra
- Department of Chemistry; National Institute of Technology Rourkela; Orissa 769008 India
| | - S. Mawatwal
- Department of Life Science; National Institute of Technology Rourkela; Orissa 769008 India
| | - S. Kumari
- Department of Life Science; National Institute of Technology Rourkela; Orissa 769008 India
| | - S. Giri
- Theoretical Chemistry Laboratory, Department of Chemistry; National Institute of Technology Rourkela; Orissa 769008 India
| | - S. Das
- Department of Life Science; National Institute of Technology Rourkela; Orissa 769008 India
| | - R. Dhiman
- Department of Life Science; National Institute of Technology Rourkela; Orissa 769008 India
| | - C. Wölper
- Department for X-Ray Diffraction; Institut für Anorganische Chemie, Universität Duisburg-Essen; D-45117 Essen Germany
| | - S. Chatterjee
- Department of Chemistry; National Institute of Technology Rourkela; Orissa 769008 India
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Ghosh A, Mishra S, Giri S, Mobin SM, Bera A, Chatterjee S. Electrolyte-Free Dye-Sensitized Solar Cell with High Open Circuit Voltage Using a Bifunctional Ferrocene-Based Cyanovinyl Molecule as Dye and Redox Couple. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00104] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- A. Ghosh
- Department of Chemistry, National Institute of Technology Rourkela, Rourkela, Orissa 769008, India
| | - S. Mishra
- Department of Chemistry, National Institute of Technology Rourkela, Rourkela, Orissa 769008, India
| | - S. Giri
- Theoretical Chemistry Laboratory, Department of Chemistry, National Institute of Technology Rourkela, Rourkela, Orissa 769008, India
| | - S. M. Mobin
- Discipline of Chemistry, Indian Institute of Technology Indore, Simrol, Madhya Pradesh 452017, India
| | - A. Bera
- Department of Physics, Indian Institute of Technology Jammu, Jammu, Jammu and Kashmir 181121, India
| | - S. Chatterjee
- Department of Chemistry, National Institute of Technology Rourkela, Rourkela, Orissa 769008, India
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Dey JK, Majumdar S, Giri S. Coexisting exchange bias effect and ferroelectricity in geometrically frustrated ZnCr 2O 4. J Phys Condens Matter 2018; 30:235801. [PMID: 29701612 DOI: 10.1088/1361-648x/aac0b7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Concomitant occurrence of exchange bias effect and ferroelectric order is revealed in antiferromagnetic spinel ZnCr2O4. The exchange bias effect is observed below antiferromagnetic Neél temperature (T N) with a reasonable value of exchange bias field ([Formula: see text] Oe at 2 K). Intriguingly, the [Formula: see text] ratio is found unusually high as ∼2.2, where H C is the coercivity. This indicates that large H C is not always primary for obtaining large exchange bias effect. Ferroelectric order is observed at T N, where non-centrosymmetric magnetic structure with [Formula: see text] space group associated with the magnetoelectric coupling correlates the ferroelectric order, proposing that, ZnCr2O4 is an improper multiferroic material. Rare occurrence of exchange bias effect and ferroelectric order in ZnCr2O4 attracts the community for fundamental interest and draws special attention in designing new materials for possible electric field control of exchange bias effect.
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Affiliation(s)
- J K Dey
- Department of Solid State Physics, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
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Rattan R, Sakr S, Ali-Fehmi R, Abdulfatah E, Hanna R, Giri S, Munkarah A. S-nitrosoglutathione, a physiologic nitric oxide carrier, reduces immunosupression in ovarian cancer. Gynecol Oncol 2018. [DOI: 10.1016/j.ygyno.2018.04.102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Pakhira S, Mazumdar C, Choudhury D, Ranganathan R, Giri S. Observation of short range order driven large refrigerant capacity in chemically disordered single phase compound Dy 2Ni 0.87Si 2.95. Phys Chem Chem Phys 2018; 20:13580-13587. [PMID: 29736538 DOI: 10.1039/c8cp01280f] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, we report the successful synthesis of a new intermetallic compound Dy2Ni0.87Si2.95 forming in single phase only with a chemically disordered structure. The random distribution of Ni/Si and crystal defects create a variation in the local electronic environment between the magnetic Dy ions. In the presence of both disorder and competing exchange interactions driven magnetic frustration, originating due to c/a ∼ 1, the compound undergoes spin freezing behaviour below 5.6 K. In the non-equilibrium state below the spin freezing behaviour, the compound exhibits aging phenomena and magnetic memory effects. In the magnetically short-range ordered region, much above the freezing temperature, an unusual occurrence of considerable magnetic entropy change, -ΔSmaxM ∼ 21 J kg-1 K-1 with large cooling power RCP ∼ 531 J kg-1 and adiabatic temperature change, ΔTad ∼ 10 K for a field change of 70 kOe, is observed for this short range ordered cluster-glass compound without any magnetic hysteresis loss.
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Affiliation(s)
- Santanu Pakhira
- Condensed Matter Physics Division, Saha Institute of Nuclear Physics, 1/AF, Bidhannagar, Kolkata 700064, India.
| | - Chandan Mazumdar
- Condensed Matter Physics Division, Saha Institute of Nuclear Physics, 1/AF, Bidhannagar, Kolkata 700064, India.
| | - Dibyasree Choudhury
- Chemical Science Division, Saha Institute of Nuclear Physics, 1/AF, Bidhannagar, Kolkata 700064, India
| | - R Ranganathan
- Condensed Matter Physics Division, Saha Institute of Nuclear Physics, 1/AF, Bidhannagar, Kolkata 700064, India.
| | - S Giri
- Department of Solid State Physics, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
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Pakhira S, Mazumdar C, Ranganathan R, Giri S. Chemical disorder driven reentrant spin cluster glass state formation and associated magnetocaloric properties of Nd 2Ni 0.94Si 2.94. Phys Chem Chem Phys 2018; 20:7082-7092. [PMID: 29479590 DOI: 10.1039/c7cp08574e] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, we report the synthesis of a new ternary intermetallic compound, Nd2Ni0.94Si2.94, that forms in single phase only in a defect crystal structure. The compound exhibits an antiferromagnetic transition below 7.2 K (TN) followed by a spin cluster freezing behaviour below 2.85 K (Tf), which makes the compound a reentrant spin cluster glass system. The detailed studies of dc and ac magnetization, heat capacity, non-equilibrium dynamical behaviour, viz., aging effect, temperature and field dependent magnetic relaxation and magnetic memory effect establish the compound to be a cluster-glass material below freezing temperature. The interplay between competing exchange coupling (c/a ≃ 1.04 ⇒ JNN ≃ JNNN) and chemical disorder driven variation in the electronic environment among the Nd ions has been argued to be responsible for such a metastable state formation. A considerable value of MCE parameters (-ΔS ∼ 11.4 J kg-1 K-1, RCP ∼ 160 J kg-1 and ΔTad ∼ 5.2 K for a field change of 70 kOe) is obtained for this magnetically frustrated glassy compound.
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Affiliation(s)
- Santanu Pakhira
- Condensed Matter Physics Division, Saha Institute of Nuclear Physics, 1/AF, Bidhannagar, Kolkata 700064, India.
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Bolger JC, Broe MP, Zarog MA, Looney A, McKevitt K, Walsh D, Giri S, Peirce C, Coffey JC. Initial experience with a dual-console robotic-assisted platform for training in colorectal surgery. Tech Coloproctol 2017; 21:721-727. [PMID: 28929257 DOI: 10.1007/s10151-017-1687-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Accepted: 08/18/2017] [Indexed: 01/27/2023]
Abstract
BACKGROUND Minimally invasive surgery is associated with several patient-related benefits, including reduced length of hospital stay and reduced blood loss. Robotic-assisted surgery offers many advantages when compared with standard laparoscopic procedures, including a stable three-dimensional binocular camera platform, motion smoothing and motion scaling, improved dexterity and ergonomics. There are limited data on the effectiveness of the dual-console DaVinci Xi platform for teaching resident surgeons. The goal of this study was to examine preliminary outcomes following the introduction of a dual-console robotic platform in our institution. METHODS A retrospective review of our prospectively maintained patient database was performed. The first ten dual-console resident-performed procedures in colorectal surgery were compared with matched cases performed on a single console by the trainer. Patient demographics, operative times and patient outcomes were compared. RESULTS Twenty patients were included in this study. There was no significant difference in console time (p = 0.46) or total operative time (p = 0.52) when residents and trainers were compared. Patient outcomes were equivalent, with no difference in length of stay, morbidity or mortality. CONCLUSIONS The DaVinci Xi dual-console platform is a safe and effective platform for training junior surgeons. The dual-console system has the potential to alter surgical training pathways.
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Affiliation(s)
- J C Bolger
- Department of Colorectal Surgery, University Hospital Limerick, Limerick, Ireland
| | - M P Broe
- Department of Urology, University Hospital Limerick, Limerick, Ireland
| | - M A Zarog
- Department of Colorectal Surgery, University Hospital Limerick, Limerick, Ireland
| | - A Looney
- Department of Urology, University Hospital Limerick, Limerick, Ireland
| | - K McKevitt
- Department of Colorectal Surgery, University Hospital Limerick, Limerick, Ireland
| | - D Walsh
- Graduate Entry Medical School, University of Limerick, Limerick, Ireland
| | - S Giri
- Department of Urology, University Hospital Limerick, Limerick, Ireland
| | - C Peirce
- Department of Colorectal Surgery, University Hospital Limerick, Limerick, Ireland
| | - J C Coffey
- Department of Colorectal Surgery, University Hospital Limerick, Limerick, Ireland. .,Graduate Entry Medical School, University of Limerick, Limerick, Ireland.
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Rattan R, Dar S, Rasool N, Ali-Fehmi R, Giri S, Munkarah A. Depletion of immunosuppressive myeloid-derived suppressor cells impedes ovarian cancer growth. Gynecol Oncol 2017. [DOI: 10.1016/j.ygyno.2017.03.491] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Uddin M, Buekers T, Elshaikh M, Giri S, Munkarah A, Rattan R. Differential effects of saturated and unsaturated fatty acids on ovarian cancer growth. Gynecol Oncol 2017. [DOI: 10.1016/j.ygyno.2017.03.483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Das N, Mandala A, Naaz S, Giri S, Jain M, Bandyopadhyay D, Reiter RJ, Roy SS. Melatonin protects against lipid-induced mitochondrial dysfunction in hepatocytes and inhibits stellate cell activation during hepatic fibrosis in mice. J Pineal Res 2017; 62. [PMID: 28247434 DOI: 10.1111/jpi.12404] [Citation(s) in RCA: 115] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 02/24/2017] [Indexed: 02/06/2023]
Abstract
Lipid generates reactive oxygen species (ROS) in consequence to mitochondrial fission followed by inflammation in propagating hepatic fibrosis. The interaction of SIRT1/Mitofusin2 is critical for maintaining mitochondrial integrity and functioning, which is disrupted upon excess lipid infiltration during the progression of steatohepatitis. The complex interplay between hepatic stellate cells and steatotic hepatocytes is critically regulated by extracellular factors including increased circulating free fatty acids during fibrogenesis. Melatonin, a potent antioxidant, protects against lipid-mediated mitochondrial ROS generation. Lipotoxicity induces disruption of SIRT1 and Mitofusin2 interaction leading to mitochondrial morphological disintegration in hepatocytes. Further, fragmented mitochondria leads to mitochondrial permeability transition pore opening, cell cycle arrest and apoptosis and melatonin protects against all these lipotoxicity-mediated dysfunctions. These impaired mitochondrial dynamics also enhances the cellular glycolytic flux and reduces mitochondrial oxygen consumption rate that potentiates ROS production. High glycolytic flux generates metabolically unfavorable milieu in hepatocytes leading to inflammation, which is abrogated by melatonin. The melatonin-mediated protection against mitochondrial dysfunction was also observed in high-fat diet (HFD)-fed mice through restoration of enzymatic activities associated with respiratory chain and TCA cycle. Subsequently, melatonin reduces hepatic fat deposition and inflammation in HFD-fed mice. Thus, melatonin disrupts the interaction between steatotic hepatocyte and stellate cells, leading to the activation of the latter to abrogate collagen deposition. Altogether, the results of the current study document that the pharmacological intervention with low dose of melatonin could abrogate lipotoxicity-mediated hepatic stellate cell activation and prevent the fibrosis progression.
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Affiliation(s)
- Nabanita Das
- Cell Biology and Physiology Division, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| | - Ashok Mandala
- Cell Biology and Physiology Division, CSIR-Indian Institute of Chemical Biology, Kolkata, India
- Academy of Scientific and Innovative Research, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| | - Shamreen Naaz
- Department of Physiology, Oxidative Stress and Free Radical Biology Laboratory, University of Calcutta, University College of Science and Technology, Kolkata, India
| | - Suresh Giri
- Zydus Research Centre, Cadila Healthcare Limited, Ahmedabad, Gujarat, India
| | - Mukul Jain
- Zydus Research Centre, Cadila Healthcare Limited, Ahmedabad, Gujarat, India
| | - Debasish Bandyopadhyay
- Department of Physiology, Oxidative Stress and Free Radical Biology Laboratory, University of Calcutta, University College of Science and Technology, Kolkata, India
| | - Russel J Reiter
- Department of Cellular and Structural Biology, University of Texas Health Centre, San Antonio, TX, USA
| | - Sib Sankar Roy
- Cell Biology and Physiology Division, CSIR-Indian Institute of Chemical Biology, Kolkata, India
- Academy of Scientific and Innovative Research, CSIR-Indian Institute of Chemical Biology, Kolkata, India
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Zeidan A, Hu X, Long J, Wang R, Huntington S, Podoltsev N, Giri S, Stahl M, Gore S, Ma X, Davidoff A. Hypomethylating Agent Therapy Use and Survival in Older Patients with Higher Risk Myelodysplastic Syndromes in USA: A Large Population-Based Study. Leuk Res 2017. [DOI: 10.1016/s0145-2126(17)30234-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Banerjee A, Sannigrahi J, Giri S, Majumdar S. Observation of ultrasharp metamagnetic jumps in polycrystalline Er 2Cu 2O 5. J Phys Condens Matter 2017; 29:115803. [PMID: 28079028 DOI: 10.1088/1361-648x/aa58ff] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The observation of ultrasharp metamagnetic jumps in the field variation of magnetization (M versus H) data for the highly insulating metal oxide Er2Cu2O5 is investigated. The compound orders antiferromagnetically below about T N1 = 28 K and shows conventional 'not-so-sharp' metamagnetism around 13 kOe on the field-increasing leg in the polycrystalline sample. The uniqueness of the ultrasharp jumps in Er2Cu2O5 resides in the fact that they are only observed in the field-decreasing segment of the magnetization curve. We observe that the jumps are affected by the sweep rate of the magnetic field, similarly to several other systems that show such ultrasharp jumps. Er2Cu2O5 shows a considerable amount of thermo-remanent magnetization when it is cooled in a field that is higher than the critical field of 13 kOe. Our analysis indicates that above 13 kOe the system remains phase separated, with the coexistence of antiferromagnetic and field-induced ferromagnetic-like phases. The jumps in the return leg occur because of the shear-dominated martensitic-like phase transition of the ferromagnetic-like phase to an antiferromagnetic phase, and interfacial strain plays a major role in the observed jumps.
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Affiliation(s)
- A Banerjee
- Department of Solid State Physics, Indian Association for the Cultivation of Science, 2A & B Raja S C Mullick Road, Jadavpur, Kolkata 700 032, India
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Abstract
Sheehan's syndrome (SS) develops as a result of ischemic pituitary necrosis due to severe postpartum hemorrhage and is characterized by various degrees of hypopituitarism. Although the occurrence of SS is now rare, it should still be considered in any woman with a history of peripartum hemorrhage who develops manifestations of pituitary hormone deficiency any time following the event. Appropriate hormone replacement therapy results in marked clinical improvement. We present an unusual case of SS in a young lady who continued to have normal menstruation after the index event, had two spontaneous pregnancies, and was diagnosed only 11 years later when she presented to us with acute heart failure.
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Affiliation(s)
- S Giri
- Department of Medicine, University College of Medical Sciences, GTB Hospital, New Delhi, India
| | - P Bansal
- Department of Medicine, University College of Medical Sciences, GTB Hospital, New Delhi, India
| | - S Malik
- Department of Medicine, University College of Medical Sciences, GTB Hospital, New Delhi, India
| | - R Bansal
- Department of Medicine, University College of Medical Sciences, GTB Hospital, New Delhi, India
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Giri S, Kanakamedala M, Vijayakumar S, Mangana S, Bhanat E, Giri M, Chhabria M. PO-052: N2 node metastasis in squamous cancers of head and neck: failure patterns and future management. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)30186-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: 11/28/2022]
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Bhatt N, Haroon U, Akram M, Drumm J, Flood H, Giri S. Comparison of patient experience after transperineal template prostate biopsy with prior transrectal ultrasound guided prostate biopsy. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/s1569-9056(17)30683-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Rajamouli B, Dwaraka Viswanath CS, Giri S, Jayasankar CK, Sivakumar V. Carbazole functionalized new bipolar ligand for monochromatic red light-emitting europium(iii) complex: combined experimental and theoretical study. NEW J CHEM 2017. [DOI: 10.1039/c6nj03947b] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Complete energy transfer observed from carbazole functionalized bipolar ligand as well as β-diketonate to Eu(iii) ion and Eu(iii) complex shows efficient PLQE (41.4%) with appropriate CIE color coordinates (x = 0.64, y = 0.36).
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Affiliation(s)
- B. Rajamouli
- Department of Chemistry
- National Institute of Technology Rourkela
- Rourkela-769 008
- India
| | | | - S. Giri
- Department of Chemistry
- National Institute of Technology Rourkela
- Rourkela-769 008
- India
| | - C. K. Jayasankar
- Department of Physics
- Sri Venkateswara University
- Tirupati-517 502
- India
| | - V. Sivakumar
- Department of Chemistry
- National Institute of Technology Rourkela
- Rourkela-769 008
- India
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Joshi D, Baral SC, Giri S, Kumar AMV. Universal institutional delivery among mothers in a remote mountain district of Nepal: what are the challenges? Public Health Action 2016; 6:267-272. [PMID: 28123966 DOI: 10.5588/pha.16.0025] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2016] [Accepted: 08/29/2016] [Indexed: 11/10/2022] Open
Abstract
Setting: Eight village development committees of Mugu District, a remote mountainous district of Nepal that has poor maternal health indicators. Objectives: 1) To assess the proportion of mothers who delivered in health facilities (institutional delivery); 2) among mothers who delivered at home, to understand their reasons for doing so; and 3) among mothers who delivered in health facilities, to understand their challenges. Design: Cross-sectional study involving semi-structured interviews with mothers conducted in 2015. Results: Of 275 mothers, 97 (35%) had an institutional delivery. Multivariate logistic regression analysis showed that women who resided within 1 h distance from the birthing centre, had adequate mass media exposure or had only one child were more likely to deliver in hospital. Reasons for non-institutional delivery (n = 178) were related to geographical access (49%), personal preferences (18%) and perceived poor quality care (4%). Mothers who accessed institutional delivery (n = 97) also reported difficulties related to travel (60%), costs (28%), dysfunctional health system (18%) and unfriendly attitudes of the health-care providers (7%). Conclusion: To improve access to institutional delivery, the government should establish a 24/7 emergency ambulance network, including air ambulance. Health system issues, including unfriendly staff attitudes, urgently need to be addressed to gain the trust of the mothers.
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Affiliation(s)
- D Joshi
- Health Research and Social Development Forum (HERD), Kathmandu, Nepal
| | - S C Baral
- Health Research and Social Development Forum (HERD), Kathmandu, Nepal
| | - S Giri
- Health Research and Social Development Forum (HERD), Kathmandu, Nepal
| | - A M V Kumar
- International Union Against Tuberculosis and Lung Disease South-East Asia Regional Office, New Delhi, India
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