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Maji T, Mahto M, Kumar S, Anand U, Priyadarshi RN, Arya R, Kumar R. Hepatogenous Diabetes as Compared to Type-2 Diabetes Mellitus and Non-diabetes in Patients With Liver Cirrhosis: Magnitude, Characteristics, and Implications. J Clin Exp Hepatol 2024; 14:101411. [PMID: 38699514 PMCID: PMC11061214 DOI: 10.1016/j.jceh.2024.101411] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Accepted: 04/07/2024] [Indexed: 05/05/2024] Open
Abstract
Aim Hepatogenous diabetes (HD) is frequently underestimated among cirrhosis patients. The current study assessed the magnitude, clinical characteristics, and implications of HD in cirrhosis patients as compared to the patients with type-2 diabetes mellitus (T2DM) and non-diabetes (ND) cirrhosis. Methods In a prospective observational study, 338 consecutive eligible cirrhosis patients were screened for diabetes mellitus. A 2-hour oral glucose tolerance test (OGTT) was used to detect HD. The clinical characteristics, complications, and outcomes were ascertained and compared amongst HD, T2DM, and ND patients. Results In the final study cohort of 316 patients, the proportion of HD, T2DM, and ND was 22.5% (n = 71), 26.3% (n = 83), and 51.3% (n = 162), respectively. HD was the predominant form of diabetes (68.9%) in Child-Pugh class-C cirrhosis. The majority (73%) of HD patients had abnormal OGTT without fasting hyperglycaemia. A lower cut-off of 98.5 mg/dl for fasting blood glucose had a modest sensitivity (72%) and specificity (75%) for predicting HD. In comparison to T2DM patients, HD patients were younger, leaner, and had more advanced cirrhosis. In comparison to ND patients, HD patients were leaner but had higher glycemic indices, serum cholesterol, and arterial ammonia levels. During a median follow-up period of 12 (03-21) months, the frequency of hepatic encephalopathy and variceal haemorrhage were higher in HD and T2DM patients compared to that in the ND group. Conclusions HD is prevalent in about one fifth of cirrhosis patients. It differs from T2DM and ND in a number of ways, and has association with complications of cirrhosis.
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Affiliation(s)
- Tanmoy Maji
- Department of Gastroenterology, All India Institute of Medical Sciences, Patna, India
| | - Mala Mahto
- Department of Biochemistry, All India Institute of Medical Sciences, Patna, India
| | - Sudhir Kumar
- Department of Gastroenterology, All India Institute of Medical Sciences, Patna, India
| | - Utpal Anand
- Department of Surgical Gastroenterology, All India Institute of Medical Sciences, Patna, India
| | | | - Rahul Arya
- Department of Gastroenterology, All India Institute of Medical Sciences, Patna, India
| | - Ramesh Kumar
- Department of Gastroenterology, All India Institute of Medical Sciences, Patna, India
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Kumar R, Patel R, Priyadarshi RN, Narayan R, Maji T, Anand U, Soni JR. Amebic liver abscess: An update. World J Hepatol 2024; 16:316-330. [PMID: 38577528 PMCID: PMC10989314 DOI: 10.4254/wjh.v16.i3.316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 01/23/2024] [Accepted: 02/21/2024] [Indexed: 03/27/2024] Open
Abstract
Amebic liver abscess (ALA) is still a common problem in the tropical world, where it affects over three-quarters of patients with liver abscess. It is caused by an anaerobic protozoan Entamoeba hystolytica, which primarily colonises the cecum. It is a non-suppurative infection of the liver consisting primarily of dead hepatocytes and cellular debris. People of the male gender, during their reproductive years, are most prone to ALA, and this appears to be due to a poorly mounted immune response linked to serum testosterone levels. ALA is more common in the right lobe of the liver, is strongly associated with alcohol consumption, and can heal without the need for drainage. While majority of ALA patients have an uncomplicated course, a number of complications have been described, including rupture into abdomino-thoracic structures, biliary fistula, vascular thrombosis, bilio-vascular compression, and secondary bacterial infection. Based on clinico-radiological findings, a classification system for ALA has emerged recently, which can assist clinicians in making treatment decisions. Recent research has revealed the role of venous thrombosis-related ischemia in the severity of ALA. Recent years have seen the development and refinement of newer molecular diagnostic techniques that can greatly aid in overcoming the diagnostic challenge in endemic area where serology-based tests have limited accuracy. Metronidazole has been the drug of choice for ALA patients for many years. However, concerns over the resistance and adverse effects necessitate the creation of new, safe, and potent antiamebic medications. Although the indication of the drainage of uncomplicated ALA has become more clear, high-quality randomised trials are still necessary for robust conclusions. Percutaneous drainage appears to be a viable option for patients with ruptured ALA and diffuse peritonitis, for whom surgery represents a significant risk of mortality. With regard to all of the aforementioned issues, this article intends to present an updated review of ALA.
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Affiliation(s)
- Ramesh Kumar
- Department of Gastroenterology, All India Institute of Medical Sciences, Patna 801507, India.
| | - Rishabh Patel
- Department of Gastroenterology, All India Institute of Medical Sciences, Patna 801507, India
| | | | - Ruchika Narayan
- Department of Radiodiagnosis, All India Institute of Medical Sciences, Patna 801507, India
| | - Tanmoy Maji
- Department of Gastroenterology, All India Institute of Medical Sciences, Patna 801507, India
| | - Utpal Anand
- Department of Surgical Gastroenterology, All India Institute of Medical Sciences, Patna 801507, India
| | - Jinit R Soni
- Department of Gastroenterology, All India Institute of Medical Sciences, Patna 801507, India
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Arya R, Kumar R, Kumar T, Kumar S, Anand U, Priyadarshi RN, Maji T. Prevalence and risk factors of lymphatic dysfunction in cirrhosis patients with refractory ascites: An often unconsidered mechanism. World J Hepatol 2023; 15:1140-1152. [PMID: 37970615 PMCID: PMC10642429 DOI: 10.4254/wjh.v15.i10.1140] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 09/14/2023] [Accepted: 10/08/2023] [Indexed: 10/24/2023] Open
Abstract
BACKGROUND The lymphatic system is crucial in maintaining the body fluid homeostasis. A dysfunctional lymphatic system may contribute to the refractoriness of ascites and edema in cirrhosis patients. Therefore, assessment of lymphatic dysfunction in cirrhosis patients with refractory ascites (RA) can be crucial as it would call for using different strategies for fluid mobilization. AIM To assessing the magnitude, spectrum, and clinical associations of lymphatic dysfunction in liver cirrhosis patients with RA. METHODS This observational study included 155 consecutive cirrhosis patients with RA. The presence of clinical signs of lymphedema, such as peau d'orange appearance and positive Stemmer sign, intestinal lymphangiectasia (IL) on duodenal biopsy seen as dilated vessels in the lamina propria with strong D2-40 immunohistochemistry, and chylous ascites were used to diagnose the overt lymphatic dysfunctions. RESULTS A total of 69 (44.5%) patients out of 155 had evidence of lymphatic dysfunction. Peripheral lymphedema, found in 52 (33.5%) patients, was the most common manifestation, followed by IL in 42 (27.0%) patients, and chylous ascites in 2 (1.9%) patients. Compared to patients without lymphedema, those with lymphedema had higher mean age, median model for end-stage liver disease scores, mean body mass index, mean ascitic fluid triglyceride levels, and proportion of patients with hypoproteinemia (serum total protein < 5 g/dL) and lymphocytopenia (< 15% of total leukocyte count). Patients with IL also had a higher prevalence of lymphocytopenia and hypoproteinemia (28.6% vs. 9.1%, P = 0.004). Seven (13%) patients with lymphedema had lower limb cellulitis compared to none in those without it. On multivariate regression analysis, factors independently associated with lymphatic dysfunction included obesity [odds ratio (OR): 4.2, 95% confidence intervals (95%CI): 1.1-15.2, P = 0.027], lymphocytopenia [OR: 6.2, 95%CI: 2.9-13.2, P < 0.001], and hypoproteinemia [OR: 3.7, 95%CI: 1.5-8.82, P = 0.003]. CONCLUSION Lymphatic dysfunction is common in cirrhosis patients with RA. Significant indicators of its presence include hypoproteinemia and lymphocytopenia, which are likely due to the loss of lymphatic fluid from the circulation. Future efforts to mobilize fluid in these patients should focus on methods to improve lymphatic drainage.
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Affiliation(s)
- Rahul Arya
- Department of Gastroenterology, All India Institute of Medical Sciences, Patna 801507, Bihar, India
| | - Ramesh Kumar
- Department of Gastroenterology, All India Institute of Medical Sciences, Patna 801507, Bihar, India.
| | - Tarun Kumar
- Department of Pathology, All India Institute of Medical Sciences, Patna 801507, Bihar, India
| | - Sudhir Kumar
- Department of Gastroenterology, All India Institute of Medical Sciences, Patna 801507, Bihar, India
| | - Utpal Anand
- Department of Surgical Gastroenterology, All India Institute of Medical Sciences, Patna 801507, Bihar, India
| | - Rajeev Nayan Priyadarshi
- Department of Radiodiagnosis, All India Institute of Medical Sciences, Patna 801507, Bihar, India
| | - Tanmoy Maji
- Department of Gastroenterology, All India Institute of Medical Sciences, Patna 801507, Bihar, India
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Kumari P, Sinha R, Khanna N, Maji T. Gastric Xanthoma: A Rare Case Report. Iran J Pathol 2023; 18:104-107. [PMID: 37383159 PMCID: PMC10293599 DOI: 10.30699/ijp.2023.551854.2878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 10/09/2022] [Indexed: 06/30/2023]
Abstract
Xanthomas are characterized by the presence of foamy lipid-laden macrophages. The gastrointestinal tract is an uncommon site for xanthoma, with the stomach being the most favored location. They have been associated with various premalignant and malignant conditions of the stomach. We present a case of a 21-year-old female patient with dyspepsia of 4 months duration. Her lipid profile was mildly altered. On upper gastrointestinal endoscopy, multiple discrete yellow patches were found in the antrum, diagnosed as gastric xanthoma on microscopy. Various published literature has emphasized the frequent association of gastric xanthomas with gastritis, gastric atrophy, intestinal metaplasia, and gastric cancer. Hence, there is a necessity for early recognition, treatment of any coexistent pathology, and close clinical follow-up.
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Affiliation(s)
- Pummi Kumari
- Department of Pathology, Lab medicine, All India Institute of Medical Science, Patna, Bihar, India
| | - Ruchi Sinha
- Department of Pathology, Lab medicine, All India Institute of Medical Science, Patna, Bihar, India
| | - Nisha Khanna
- Department of Pathology, Lab medicine, All India Institute of Medical Science, Patna, Bihar, India
| | - Tanmoy Maji
- Department of Gastroenterology, All India Institute of Medical Science, Patna, Bihar, India
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Kumar R, García-Compeán D, Maji T. Hepatogenous diabetes: Knowledge, evidence, and skepticism. World J Hepatol 2022; 14:1291-1306. [PMID: 36158904 PMCID: PMC9376767 DOI: 10.4254/wjh.v14.i7.1291] [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] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 04/27/2022] [Accepted: 07/06/2022] [Indexed: 02/06/2023] Open
Abstract
The diabetogenic potential of liver cirrhosis (LC) has been known for a long time, and the name "hepatogenous diabetes" (HD) was coined in 1906 to define the condition. Diabetes mellitus (DM) that develops as a consequence of LC is referred to as HD. In patients with LC, the prevalence rates of HD have been reported to vary from 21% to 57%. The pathophysiological basis of HD seems to involve insulin resistance (IR) and pancreatic β-cell dysfunction. The neurohormonal changes, endotoxemia, and chronic inflammation of LC initially create IR; however, the toxic effects eventually lead to β-cell dysfunction, which marks the transition from impaired glucose tolerance to HD. In addition, a number of factors, including sarcopenia, sarcopenic obesity, gut dysbiosis, and hyperammonemia, have recently been linked to impaired glucose metabolism in LC. DM is associated with complications and poor outcomes in patients with LC, although the individual impact of each type 2 DM and HD is unknown due to a lack of categorization of diabetes in most published research. In fact, there is much skepticism within scientific organizations over the recognition of HD as a separate disease and a consequence of LC. Currently, T2DM and HD are being treated in a similar manner although no standardized guidelines are available. The different pathophysiological basis of HD may have an impact on treatment options. This review article discusses the existence of HD as a distinct entity with high prevalence rates, a strong pathophysiological basis, clinical and therapeutic implications, as well as widespread skepticism and knowledge gaps.
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Affiliation(s)
- Ramesh Kumar
- Department of Gastroenterology, All India Institute of Medical Sciences, Patna 801507, Bihar, India
| | - Diego García-Compeán
- Department of Gastroenterology, University Hospital, Universidad Autónoma de Nuevo León, México, Monterrey 64700, México
| | - Tanmoy Maji
- Department of Gastroenterology, All India Institute of Medical Sciences, Patna 801507, Bihar, India
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Arya R, Priyadarshi RN, Maji T, Kumar R, Anand U. Large Hepatic Subcapsular Hematoma Following Endoscopic Retrograde Cholangiopancreatography: A Case Report. Cureus 2022; 14:e21920. [PMID: 35273865 PMCID: PMC8901137 DOI: 10.7759/cureus.21920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/05/2022] [Indexed: 12/02/2022] Open
Abstract
For decades, endoscopic retrograde cholangiopancreatography (ERCP) has been the cornerstone in the treatment of several biliopancreatic diseases. Although it is a relatively safe procedure, there are certain hazards involved. Hepatic subcapsular hematoma (HSH) is an uncommon complication of ERCP, with only a few cases reported in the literature to date. We present here a case of large HSH that developed 48 hours after an otherwise uneventful ERCP for choledocholithiasis. After being apparently well for the first two days post-ERCP, the patient began to develop abdominal pain and restlessness associated with hemodynamic instability and a decline in hemoglobin levels. Computed tomography (CT) confirmed the presence of a large HSH. The patient was managed nonsurgically with vascular angioembolization followed by ultrasound-guided percutaneous catheter drainage of hematoma. This case highlights the necessity of increasing awareness about this complication in order to aid in early diagnosis and management.
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Maji T, Rousti AM, Kazi AP, Drew C, Kumar J, Christodouleas DC. Wearable Thermoelectric Devices Based on Three-Dimensional PEDOT:Tosylate/CuI Paper Composites. ACS Appl Mater Interfaces 2021; 13:46919-46926. [PMID: 34546722 DOI: 10.1021/acsami.1c12237] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Thermoelectric composites of organic and inorganic materials exhibit significantly enhanced thermoelectric properties compared with pristine organic thermoelectrics so they might be better suited as core materials of wearable thermoelectric devices. This study describes the development of three-dimensional (3D) paper PEDOT:tosylate/CuI composites that could be shaped as 3 mm thick blocks to convert a temperature difference between their bottom and top sides into power; the majority of organic thermoelectric materials are shaped as thin strips usually on a planar substrate and convert a temperature difference between the opposite edges of the strips into power. The 3D paper PEDOT:tosylate/CuI composites can produce a power density equal to 4.8 nW/cm2 (ΔΤ = 6 Κ) that is 10 times higher than that of the pristine paper PEDOT:Tos composites. The enhanced thermoelectric properties of the paper PEDOT:tosylate/CuI composites are attributed to the CuI nanocrystals entrapped inside the composite that increases the Seebeck coefficient of the composite to 225 μV K-1; the Seebeck coefficient of paper PEDOT:Tos is 65 μV K-1. A proof-of-concept wearable thermoelectric device that uses 36 blocks of the paper PEDOT:tosylate/CuI composites (as p-type elements) and 36 wires of monel (as n-type elements) can produce up to 4.7 μW of power at ΔΤ = 20 K. The device has a footprint of 64 cm2 and can be placed directly over the skin or can be embedded into clothing.
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Affiliation(s)
- Tanmoy Maji
- Department of Chemistry, University of Massachusetts Lowell, Lowell, Massachusetts 01854, United States
- Department of Physics and Applied Physics, University of Massachusetts Lowell, Lowell, Massachusetts 01854, United States
| | - Anna Maria Rousti
- Department of Chemistry, University of Massachusetts Lowell, Lowell, Massachusetts 01854, United States
| | - Abbas Parvez Kazi
- Department of Chemistry, University of Massachusetts Lowell, Lowell, Massachusetts 01854, United States
| | - Christopher Drew
- US Army DEVCOM Soldier Center, Natick Massachusetts 01760, United States
| | - Jayant Kumar
- Department of Physics and Applied Physics, University of Massachusetts Lowell, Lowell, Massachusetts 01854, United States
- Center for Advanced Material and Science, University of Massachusetts Lowell, Lowell, Massachusetts 01854, United States
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8
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Affiliation(s)
| | - Tanmoy Maji
- Department of Chemistry, University of Massachusetts Lowell, Cambridge, Massachusetts, Lowell Massachusetts 01854, United States
| | - Manos Gkikas
- Department of Chemistry, University of Massachusetts Lowell, Cambridge, Massachusetts, Lowell Massachusetts 01854, United States
| | - Kia L. Ngai
- CNR-IPCF, Università di Pisa, Largo Bruno Pontecorvo 3, Pisa I-56127, Italy
| | - George Floudas
- Department of Physics, University of Ioannina, Ioannina 45110, Greece
- Institute of Materials Science and Computing, University Research Center of Ioannina (URCI), Ioannina 45110, Greece
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Noual A, Kang E, Maji T, Gkikas M, Djafari-Rouhani B, Fytas G. Optomechanic Coupling in Ag Polymer Nanocomposite Films. J Phys Chem C Nanomater Interfaces 2021; 125:14854-14864. [PMID: 34295447 PMCID: PMC8287562 DOI: 10.1021/acs.jpcc.1c04549] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 06/15/2021] [Indexed: 05/08/2023]
Abstract
Particle vibrational spectroscopy has emerged as a new tool for the measurement of elasticity, glass transition, and interactions at a nanoscale. For colloid-based materials, however, the weakly localized particle resonances in a fluid or solid medium renders their detection difficult. The strong amplification of the inelastic light scattering near surface plasmon resonance of metallic nanoparticles (NPs) allowed not only the detection of single NP eigenvibrations but also the interparticle interaction effects on the acoustic vibrations of NPs mediated by strong optomechanical coupling. The "rattling" and quadrupolar modes of Ag/polymer and polymer-grafted Ag NPs with different diameters in their assemblies are probed by Brillouin light spectroscopy (BLS). We present thorough theoretical 3D calculations for anisotropic Ag elasticity to quantify the frequency and intensity of the "rattling" mode and hence its BLS activity for different interparticle separations and matrix rigidity. Theoretically, a liquidlike environment, e.g., poly(isobutylene) (PIB) does not support rattling vibration of Ag dimers but unexpectedly hardening of the extremely confined graft melt renders both activation of the former and a frequency blue shift of the fundamental quadrupolar mode in the grafted nanoparticle Ag@PIB film.
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Affiliation(s)
- Adnane Noual
- Faculté
Pluridisciplinaire Nador, LPMR, Université
Mohammed Premier, Oujda BP 717-60 000, Morocco
| | - Eunsoo Kang
- Max
Planck Institute for Polymer Research, Ackermannweg 10, Mainz 55128, Germany
| | - Tanmoy Maji
- Department
of Chemistry, University of Massachusetts
Lowell, Lowell, Massachusetts 01854, United States
| | - Manos Gkikas
- Department
of Chemistry, University of Massachusetts
Lowell, Lowell, Massachusetts 01854, United States
| | - Bahram Djafari-Rouhani
- Institut
d’Électronique, de Microélectronique et de Nanotechnologie
(IEMN), UMR-CNRS 8520, Department of Physics, University of Lille, Villeneuve d’Ascq 59655, France
| | - George Fytas
- Max
Planck Institute for Polymer Research, Ackermannweg 10, Mainz 55128, Germany
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Jana S, Anas M, Maji T, Banerjee S, Mandal TK. Tryptophan-based styryl homopolymer and polyzwitterions with solvent-induced UCST, ion-induced LCST and pH-induced UCST. Polym Chem 2019. [DOI: 10.1039/c8py01512k] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [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
A multi-stimuli responsive tryptophan-based styryl homopolymer and polyzwitterions with solvent-induced UCST, ion-induced LCST and pH-induced UCST under different conditions are presented.
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Affiliation(s)
- Somdeb Jana
- Polymer Science Unit
- School of Chemical Sciences
- Indian Association for the Cultivation of Science
- Kolkata 700 032
- India
| | - Mahammad Anas
- Polymer Science Unit
- School of Chemical Sciences
- Indian Association for the Cultivation of Science
- Kolkata 700 032
- India
| | - Tanmoy Maji
- Polymer Science Unit
- School of Chemical Sciences
- Indian Association for the Cultivation of Science
- Kolkata 700 032
- India
| | - Sanjib Banerjee
- Polymer Science Unit
- School of Chemical Sciences
- Indian Association for the Cultivation of Science
- Kolkata 700 032
- India
| | - Tarun K. Mandal
- Polymer Science Unit
- School of Chemical Sciences
- Indian Association for the Cultivation of Science
- Kolkata 700 032
- India
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Maji T, Banerjee S, Bose A, Mandal TK. A stimuli-responsive methionine-based zwitterionic methacryloyl sulfonium sulfonate monomer and the corresponding antifouling polymer with tunable thermosensitivity. Polym Chem 2017. [DOI: 10.1039/c7py00460e] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
This report describes a dual pH- and thermo-responsive methionine-based zwitterionic methacryloyl sulfonium sulfonate monomer and the corresponding zwitterionic antifouling polymer with ion-induced tunable thermosensitivity.
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Affiliation(s)
- Tanmoy Maji
- Polymer Science Unit
- Indian Association for the Cultivation of Science
- Kolkata 700 032
- India
| | - Sanjib Banerjee
- Polymer Science Unit
- Indian Association for the Cultivation of Science
- Kolkata 700 032
- India
| | - Avijit Bose
- Polymer Science Unit
- Indian Association for the Cultivation of Science
- Kolkata 700 032
- India
| | - Tarun K. Mandal
- Polymer Science Unit
- Indian Association for the Cultivation of Science
- Kolkata 700 032
- India
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Biswas Y, Maji T, Dule M, Mandal TK. Tunable doubly responsive UCST-type phosphonium poly(ionic liquid): a thermosensitive dispersant for carbon nanotubes. Polym Chem 2016. [DOI: 10.1039/c5py01574j] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [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
Poly(triphenyl-4-vinylbenzylphosphonium chloride) synthesized via RAFT polymerization exhibits both tunable halide ion- and thermo-responsiveness (UCST-type) in aqueous solution and acts as a thermosensitive stabilizer for carbon nanotubes.
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Affiliation(s)
- Yajnaseni Biswas
- Polymer Science Unit
- Indian Association for the Cultivation of Science
- Jadavpur
- India
| | - Tanmoy Maji
- Polymer Science Unit
- Indian Association for the Cultivation of Science
- Jadavpur
- India
| | - Madhab Dule
- Polymer Science Unit
- Indian Association for the Cultivation of Science
- Jadavpur
- India
| | - Tarun K. Mandal
- Polymer Science Unit
- Indian Association for the Cultivation of Science
- Jadavpur
- India
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Affiliation(s)
- Tanmoy Maji
- Polymer
Science Unit, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700
032, India
| | - Sanjib Banerjee
- Polymer
Science Unit, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700
032, India
| | - Yajnaseni Biswas
- Polymer
Science Unit, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700
032, India
| | - Tarun K. Mandal
- Polymer
Science Unit, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700
032, India
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Banerjee S, Maji T, Paira TK, Mandal TK. Diblock Copolymers with Miscible Blocks via One-Pot Sequential Cationic Polymerization and Their Block-Length-Dependent Vesicular Aggregation. MACROMOL CHEM PHYS 2014. [DOI: 10.1002/macp.201300741] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [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)
- Sanjib Banerjee
- Polymer Science Unit, Indian Association for the Cultivation of Science; Jadavpur Kolkata 700 032 India
| | - Tanmoy Maji
- Polymer Science Unit, Indian Association for the Cultivation of Science; Jadavpur Kolkata 700 032 India
| | - Tapas K. Paira
- Polymer Science Unit, Indian Association for the Cultivation of Science; Jadavpur Kolkata 700 032 India
| | - Tarun K. Mandal
- Polymer Science Unit, Indian Association for the Cultivation of Science; Jadavpur Kolkata 700 032 India
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Saha SK, Bhaumik S, Maji T, Mandal TK, Pal AJ. Solution-processed reduced graphene oxide in light-emitting diodes and photovoltaic devices with the same pair of active materials. RSC Adv 2014. [DOI: 10.1039/c4ra03913k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In studying the role of GO in LEDs and PVs, a single pair of active materials has been used in both the devices.
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Affiliation(s)
- Sudip K. Saha
- Department of Solid State Physics
- Indian Association for the Cultivation of Science
- Kolkata 700032, India
| | - Saikat Bhaumik
- Department of Solid State Physics
- Indian Association for the Cultivation of Science
- Kolkata 700032, India
| | - Tanmoy Maji
- Polymer Science Unit
- Indian Association for the Cultivation of Science
- Kolkata 700032, India
| | - Tarun K. Mandal
- Polymer Science Unit
- Indian Association for the Cultivation of Science
- Kolkata 700032, India
| | - Amlan J. Pal
- Department of Solid State Physics
- Indian Association for the Cultivation of Science
- Kolkata 700032, India
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Maji T, Banerjee S, Biswas M, Mandal TK. In situ synthesis of ultra-small platinum nanoparticles using a water soluble polyphenolic polymer with high catalytic activity. RSC Adv 2014. [DOI: 10.1039/c4ra08900f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [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] Open
Abstract
Ultra-small platinum nanoparticles are generated by in situ polymer reduction technique which shows high catalytic activity in water and in organic solvent.
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Affiliation(s)
- Tanmoy Maji
- Polymer Science Unit
- Indian Association for the Cultivation of Science
- Kolkata 700 032, India
| | - Sanjib Banerjee
- Polymer Science Unit
- Indian Association for the Cultivation of Science
- Kolkata 700 032, India
| | - Mrinmoy Biswas
- Polymer Science Unit
- Indian Association for the Cultivation of Science
- Kolkata 700 032, India
| | - Tarun K. Mandal
- Polymer Science Unit
- Indian Association for the Cultivation of Science
- Kolkata 700 032, India
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Banerjee S, Maji T, Paira TK, Mandal TK. Amino-Acid-Based Zwitterionic Polymer and Its Cu(II)-Induced Aggregation into Nanostructures: A Template for CuS and CuO Nanoparticles. Macromol Rapid Commun 2013; 34:1480-6. [DOI: 10.1002/marc.201300481] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Revised: 06/11/2013] [Indexed: 11/07/2022]
Affiliation(s)
- Sanjib Banerjee
- Polymer Science Unit; Indian Association for the Cultivation of Science; Jadavpur Kolkata 700 032 India
| | - Tanmoy Maji
- Polymer Science Unit; Indian Association for the Cultivation of Science; Jadavpur Kolkata 700 032 India
| | - Tapas K. Paira
- Polymer Science Unit; Indian Association for the Cultivation of Science; Jadavpur Kolkata 700 032 India
| | - Tarun K. Mandal
- Polymer Science Unit; Indian Association for the Cultivation of Science; Jadavpur Kolkata 700 032 India
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Goswami J, Saha S, Patra N, Basu S, Chatterjee K, Chattopadhyay S, Sorcar S, Maji T, Sarkar S. P91 Breast conservation in early disease: a comparison of intra operative and post operative HDR brachytherapy boost. Breast 2007. [DOI: 10.1016/s0960-9776(07)70156-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: 11/24/2022] Open
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