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Varsi F, Ahmad S, Chakraborty M, Chandra A, Dugad SR, Goswami UD, Gupta SK, Hariharan B, Hayashi Y, Jagadeesan P, Jain A, Jain P, Kawakami S, Kojima H, Lipari P, Mahapatra S, Mohanty PK, Moharana R, Muraki Y, Nayak PK, Nonaka T, Oshima A, Pant BP, Pattanaik D, Paul S, Pradhan GS, Rameez M, Ramesh K, Reddy LV, Saha S, Sahoo R, Scaria R, Shibata S, Zuberi M. Evidence of a Hardening in the Cosmic Ray Proton Spectrum at around 166 TeV Observed by the GRAPES-3 Experiment. Phys Rev Lett 2024; 132:051002. [PMID: 38364164 DOI: 10.1103/physrevlett.132.051002] [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] [Received: 04/18/2023] [Revised: 10/16/2023] [Accepted: 01/04/2024] [Indexed: 02/18/2024]
Abstract
We present the measurement of the cosmic ray proton spectrum from 50 TeV to 1.3 PeV using 7.81×10^{6} extensive air shower events recorded by the ground-based GRAPES-3 experiment between 1 January 2014 and 26 October 2015 with a live time of 460 day. Our measurements provide an overlap with direct observations by satellite and balloon-based experiments. The electromagnetic and muon components in the shower were measured by a dense array of plastic scintillator detectors and a tracking muon telescope, respectively. The relative composition of the proton primary from the air shower data containing all primary particles was extracted using the multiplicity distribution of muons which is a sensitive observable for mass composition. The observed proton spectrum suggests a spectral hardening at ∼166 TeV and disfavors a single power law description of the spectrum up to the Knee energy (∼3 PeV).
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Affiliation(s)
- F Varsi
- Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - S Ahmad
- Aligarh Muslim University, Aligarh 202002, India
| | - M Chakraborty
- Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India
| | - A Chandra
- Aligarh Muslim University, Aligarh 202002, India
| | - S R Dugad
- Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India
| | - U D Goswami
- Dibrugarh University, Dibrugarh 786004, India
| | - S K Gupta
- Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India
| | - B Hariharan
- Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India
| | - Y Hayashi
- Graduate School of Science, Osaka Metropolitan University, Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
| | - P Jagadeesan
- Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India
| | - A Jain
- Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India
| | - P Jain
- Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - S Kawakami
- Graduate School of Science, Osaka Metropolitan University, Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
| | - H Kojima
- College of Engineering, Chubu University, Kasugai, Aichi 487-8501, Japan
| | - P Lipari
- INFN, Sezione Roma "Sapienza", Piazzale Aldo Moro 2, 00185 Roma, Italy
| | | | - P K Mohanty
- Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India
| | - R Moharana
- Indian Institute of Technology Jodhpur, Jodhpur 342037, India
| | - Y Muraki
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya 464-8601, Japan
| | - P K Nayak
- Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India
| | - T Nonaka
- Institute for Cosmic Ray Research, Tokyo University, Kashiwa, Chiba 277-8582, Japan
| | - A Oshima
- College of Engineering, Chubu University, Kasugai, Aichi 487-8501, Japan
| | - B P Pant
- Indian Institute of Technology Jodhpur, Jodhpur 342037, India
| | - D Pattanaik
- Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India
- Utkal University, Bhubaneswar 751004, India
| | - S Paul
- Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India
| | - G S Pradhan
- Indian Institute of Technology Indore, Indore 453552, India
| | - M Rameez
- Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India
| | - K Ramesh
- Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India
| | - L V Reddy
- Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India
| | - S Saha
- Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - R Sahoo
- Indian Institute of Technology Indore, Indore 453552, India
| | - R Scaria
- Indian Institute of Technology Indore, Indore 453552, India
| | - S Shibata
- College of Engineering, Chubu University, Kasugai, Aichi 487-8501, Japan
| | - M Zuberi
- Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India
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Chakraborty M, Hasan MM, Kenreich JR, Jadwisienczak WM, Rahman F. Design and operation of a hybrid LED/LD-pumped phosphor-converted white-light lamp. Appl Opt 2023; 62:2266-2272. [PMID: 37132864 DOI: 10.1364/ao.484238] [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] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Illumination sources based on phosphors, pumped by laser diodes (LDs), have seen rapid developments over the past decade. Here, we present a new, to the best of our knowledge, design that features both spectral richness and the capability for high brightness. Complete design details and operational characterization have been described. This basic design can be extended in various ways to customize such lamps for different operational requirements. A hybrid arrangement of both LEDs and an LD is used to excite a mixture of two phosphors. The LEDs, in addition, provide a blue fill-in to enrich output radiation and to tune the chromaticity point inside the white region. The LD power, on the other hand, can be scaled up to generate very high brightness levels that are not achievable with pumping from LEDs alone. This capability is gained using a special transparent ceramic disk that carries the remote phosphor film. We also show that the radiation from our lamp is free from speckle-producing coherence.
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Chakraborty M, Kadir E, Gayen R. GO induced grain-boundary modification in transparent TiO2-GO nanocomposite thin films: Study by DC bias dependent impedance spectroscopy. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.140116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Chakravarty B, Kalapahar S, Sharma S, Chattopadhyay R, Ghosh S, Chakraborty M, Chakraborty R, Bose U, Chakraborty P. O-031 Activation of NLRP3 inflammasome enhances neutrophil extracellular traps in women with stage III/IV endometriosis: convergence of multiple signaling portray association between genetics and lesion type. Hum Reprod 2022. [DOI: 10.1093/humrep/deac104.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Study question
Do NOD-like receptor pyrin-containing 3 (NLRP3) signaling affect neutrophil extracellular traps (NET)-osis in women with stage III/IV endometriosis?
Summary answer
Inflammasome activation whether due to pathogen (disease itself) or damage-associated molecular pattern (through NET) might be one mechanism involved in establishing perturbed endometrium in endometriosis.
What is known already
Endometriosis is characterized by number of processes like vascularization, hypernociception, and fibrosis, cardinal cause being inflammation. Recently, expression of inflammasome components, including NLRP3 and apoptosis signal-regulating kinase has been demonstrated in human endometrium cueing involvement in uterine innate immunity. Moreover, a novel extracellular killing mechanism, NET, is documented to reflect an inflammatory status in deep infiltrating endometriosis. Since, endometriosis demonstrates similarities with chronic inflammatory and autoimmune disorders; we postulated inflammatory responses in endometriosis may become modulated through a feed-forward loop of NET-induced specific cytokine production thus providing insights against potentiality of endometriotic cells to limit progression of the disease.
Study design, size, duration
Twenty-two consented women (24-39 years) with endometriosis (Group A) (Stages III–IV) (based on ASRM-2018 guidelines) and age-matched counterpart/s of male sub-fertility (Group B; control), free of uterine abnormalities (n = 18) were recruited between January to December 2021 from Institute of Reproductive Medicine, Kolkata. Eutopic endometrium, were collected from women undergoing diagnostic laparoscopy (Group A) or by curettage from women undergoing endometrial ablation (Group B). Serum was collected during window-of-implantation (LH + 7) for both the group/s.
Participants/materials, setting, methods
Pro-(IFN-g, TNF-a, IL-6, TGF-b) and anti-inflammatory (IL-10, IL-13, IL-4, IL-5) cytokines was evaluated by western blot. Expression level of inflammasome-related proteins (NLRP3, ASC, CASPASE1, PYCARD, IL-1-b) and mRNA expression was estimated by western-blot and quantitative-real-time PCR (qRT-PCR) respectively from tissue biopsies in Group A and B. SYTOX® green assay by flow-cytometry and neutrophil-elastase activity by immunofluorescence was done to quantify and characterize NET production in blood monocytes. P < 0.05 was considered statistically significant.
Main results and the role of chance
The mean (±SD) age of study population was 31.6±5.2 years. Hyperestrogenic milieu possibly stimulated (p < 0.001) pro-inflammatory molecules (IFN-g, TNF-a, IL-6, TGF-b) in endometriosis as observed by western-blot and qRT-PCR. A significant up-regulation (p < 0.001) was observed in relative mRNA expression of NLRP3 and PYCARD gene in Group A. However, caspase 1 expression documented non-significant variation in biopsies from endometriosis patients. Western blot corroborated the finding/s. The outcome of NLRP3 activation was supported by increased (p < 0.002) mRNA expression of IL-1b. NETs were detected significantly higher (p < 0.01) in 54.54% (12/22) patients in group A compared to control (16.66%; (3/18)). Moreover, quantification of NETs showed a significantly higher amount in endometriosis compared to group B (0.097 vs. 0.02, p < 0.03).
Spermann-rank correlation by SPSS version22 revealed positive correlation between IL-1b with NLRP3 (r = 0.56, p< 0.001), PYCARD (r = 0.11, p< 0.01); and caspase1 (r = 0.16, p< 0.01) and IL-1b (r = 0.47, p< 0.01) with NET-positive cell/s in endometriosis. Moreover, posterior cul-de-sac lesions correlated positively with NET-positive cell/s (r = 0.29; p < 0.01) cueing to possible prognostic marker/s. In summary, a coordinated-fashioned action of components of NLRP3 inflammasome machinery may regulate production of NET/s forming a complex network allowing communication between cell-types in order to maintain viability and development of endometrial lesion/s.
Limitations, reasons for caution
Our findings need to be replicated in larger study cohort/s, especially stratified by severity of endometriosis sub-groups and in women of different ethnicities. Another limitation is the missing information about NETs in normal functioning human endometrium throughout the menstrual cycle.
Wider implications of the findings
The proposed study aims to understand potential role of NLRP3 inflammasome complex as a “double-edged sword” in the development and pathophysiology of endometriosis. Therapeutic alternatives that aim to re-balance the pro- to anti-inflammatory milieu in the endometrium should consider the inflammasome as part of the equation.
Trial registration number
Not applicable
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Affiliation(s)
- B Chakravarty
- Institute of Reproductive Medicine, Department of Assisted Reproduction, Kolkata , India
| | - S Kalapahar
- Institute of Reproductive Medicine, Department of Assisted Reproduction, Kolkata , India
| | - S Sharma
- Institute of Reproductive Medicine, Department of Assisted Reproduction, Kolkata , India
| | - R Chattopadhyay
- Institute of Reproductive Medicine, Department of Assisted Reproduction, Kolkata , India
| | - S Ghosh
- Institute of Reproductive Medicine, Department of Assisted Reproduction, Kolkata , India
| | - M Chakraborty
- Institute of Reproductive Medicine, Department of Assisted Reproduction, Kolkata , India
| | - R Chakraborty
- Melaka Manipal Medical College, Department of Microbiology, Manipal , India
| | - U Bose
- Melaka Manipal Medical College, Department of Pharmacology, Manipal , India
| | - P Chakraborty
- Institute of Reproductive Medicine, Department of Assisted Reproduction, Kolkata , India
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Kalapahar S, Chakraborty P, Shama S, Mitra I, Chattopadhyay R, Ghosh S, Chakraborty M, Chakravarty B. P-390 Serum homocysteine and uterine artery Doppler ultrasound in combination has better predictive accuracy in women with preeclampsia: useful tool for early screening in everyday practice. Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Study question
Is serum homocysteine combined with uterine-artery Doppler were effective in predicting preeclampsia (≥140mmHg/≥90mmHg blood pressure) in singleton pregnancy during 11–15 weeks of gestation?
Summary answer
Combination of serum homocysteine levels with uterine-artery Doppler is superior to individual presence of biochemical/ultrasound marker/s making the duo effective for early screening in preeclampsia.
What is known already
American College of Obstetricians and Gynecologists and National Institute for Care and Health Excellence recommend identifying patients who are at high risk of developing preeclampsia based on medical history. Recently, biochemical and ultrasound markers were investigated for prediction of preeclampsia, but none of them were predictably reliable, valid, and suitable for routine clinical use. Increased levels of homocysteine in 1st-trimester, seems to signal onset of preeclampsia later in pregnancy portraying severity of the disease as well. We aimed to identify predictive value of serum homocysteine combined with uterine-artery Doppler in singleton pregnancy during 11–15 weeks of gestation for preeclampsia.
Study design, size, duration
One hundred forty-two consented singleton pregnant women (28-45 years) at gestational age of 11–15 weeks, recruited between January to December 2021 from Institute of Reproductive Medicine, Kolkata were enrolled in the study. Women who used aspirin as a prophylaxis for preeclampsia or were diagnosed to have fetal, structural or chromosomal abnormalities were excluded from the study (n = 7). Maternal age, weight and height, mean arterial pressure, parity, and obstetric history were documented.
Participants/materials, setting, methods
Uterine-artery Doppler ultrasound and serum homocysteine levels were performed transabdominally and using ELISA respectively. Pregnancy outcomes were recorded. Sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) at optimal cut-off values were determined to predict preeclampsia. Optimal cut-off values for homocysteine levels were calculated using receiver operator characteristic curve (ROC). Chi-square test, Fisher’s exact test, unpaired t test, and Mann–Whitney U test were used when appropriate. P-value <0.05 was considered statistically significant.
Main results and the role of chance
16 cases had preeclampsia (11.26%) of whom 9 had early-onset preeclampsia (6.33%). Baseline characteristics including maternal-age (>35 or<), parity, body-mass- index, and gestational-age at measurement were not significantly different between two groups excepting higher (p < 0.001) mean arterial blood pressure (mmHg) at first trimester (97.2±6.4 vs. 81.1±7.2) in preeclampsia. Preeclamptic women had significantly higher (p < 0.001) serum homocysteine levels (μmol/l) (26.1±3.5 vs 10.2± 5.6) than normotensive pregnant women (n = 119). No difference in mean pulsatility (PI) of uterine-artery was observed (1.78±0.64 vs. 1.72±0.48) excluding significantly high (p > 0.02) in women with early-onset preeclampsia than control (2.11±0.81 vs. 1.39±0.92). However, lower (p < 0.01) gestational age (weeks) (35.4±2.1 vs. 37.6±1.4), and neonatal birth weight (gms) (2937.3±578.2 vs. 3227.6±421.5) with higher (p < 0.001) preterm delivery (25% vs 5.04%), low birth weight (25% vs 5.04%) and neonatal respiratory distress syndrome (12.5% vs. 0.84%) was documented in preeclampsia than control/s. The optimal cut-off value of serum homocysteine with PI levels, from ROC (AUC=0.735, p < 0.001) was superior to individual ROC (AUC=0.451; AUC=0.268). The sensitivity, specificity, PPV, and NPV were 67.7%, 70.5%, 1.7%, and 98.5%, respectively using a combination of abnormal serum homocysteine levels with abnormal uterine artery Doppler PI (above 95th percentile) and used as a predictive value for preeclampsia.
Limitations, reasons for caution
The limitation of this study was that there were small cases of early-onset preeclampsia. Additional studies with a larger sample size of early-onset preeclampsia and other models using serum homocysteine, combined with uterine artery Doppler, and maternal characteristic risk factors should be conducted.
Wider implications of the findings
Early screening of preeclampsia by using combination of serum homocysteine and uterine artery Doppler during first trimester (11–15 weeks) at the same visit may be more effective and allows the timing for using early low-dose aspirin prophylaxis in order to prevent preeclampsia.
Trial registration number
Not applicable
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Affiliation(s)
- S Kalapahar
- Institute of Reproductive Medicine, Department of Assisted Reproduction , Kolkata, India
| | - P Chakraborty
- Institute of Reproductive Medicine, Department of Assisted Reproduction , Kolkata, India
| | - S Shama
- Institute of Reproductive Medicine, Department of Assisted Reproduction , Kolkata, India
| | - I Mitra
- Indian Institute of Technology- Kharagpur, School of Medical Science and Technology , Kharagpur, India
| | - R Chattopadhyay
- Institute of Reproductive Medicine, Department of Assisted Reproduction , Kolkata, India
| | - S Ghosh
- Institute of Reproductive Medicine, Department of Assisted Reproduction , Kolkata, India
| | - M Chakraborty
- Institute of Reproductive Medicine, Department of Assisted Reproduction , Kolkata, India
| | - B Chakravarty
- Institute of Reproductive Medicine, Department of Assisted Reproduction , Kolkata, India
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Affiliation(s)
- S K Paul
- Department of Agronomy, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - N U Mahmud
- Institute of Biotechnology and Genetic Engineering, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh
| | - D R Gupta
- Institute of Biotechnology and Genetic Engineering, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh
| | - M N Alam
- Bangladesh Sugarcrop Research Institute, Ishurdi 6620, Pabna, Bangladesh
| | - M Chakraborty
- Institute of Biotechnology and Genetic Engineering, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh
| | - M T Islam
- Institute of Biotechnology and Genetic Engineering, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh
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Agrawal S, Chakraborty P, Sinha A, Maiti A, Chakraborty M. ADRENAL HISTOPLASMOSIS: AN EASTERN INDIAN PERSPECTIVE. Acta Endocrinol (Buchar) 2022; 18:106-114. [PMID: 35975261 PMCID: PMC9365407 DOI: 10.4183/aeb.2022.106] [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] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
CONTEXT The clinical presentation of histoplasmosis is varied. Due to its propensity for adrenal involvement, histoplasmosis is an important differential diagnosis in any patient presenting with adrenal mass, bilateral in particular. OBJECTIVE Data on clinical presentation, pattern of adrenal involvement, radiological appearance and long-term follow-up of adrenal histoplasmosis are relatively sparse; hence we looked at it. DESIGN This record based single-centre retrospective study was conducted in one of the tertiary care hospitals, situated in eastern India catering the Gangetic delta. SUBJECTS AND METHODS Data on demographic characters, presenting manifestations, biochemical & hormonal parameters and radiological appearance of confirmed adrenal histoplasmosis cases (n=9), admitted between 2015-2019 have been retrieved. The treatment outcome and condition of patients after 1-4 years of follow-up has also been discussed. RESULTS Four out of the nine (44.4%) patients had predisposing immunocompromised conditions in the form of diabetes and/or chronic alcoholism while rest were immunocompetent. Seven out of nine patients (77.8 %) had signs and symptoms suggestive of adrenal insufficiency, while two (22.2%) presented with only pyrexia of unknown origin. All of them had bilateral adrenal mass, though the radiologically appearances were different. All patients received anti-fungal agents with/without hydrocortisone and/or fludrocortisone. One patient died (11.1%), while majority responded favourably to treatment. Adrenocortical function did not recover completely. CONCLUSIONS The possibility of adrenal histoplasmosis should always be considered in patients presenting with bilateral adrenal mass, irrespective of adrenal morphology. Treatment is effective, but many of them require supplemental hydrocortisone for quite a long period, if not lifelong. Mineralocorticoid deficiency, however, is not permanent.
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Affiliation(s)
- S.S. Agrawal
- Endocrinology & Metabolism Medical College and Hospital Kolkata, West Bengal, India
| | - P.P. Chakraborty
- Endocrinology & Metabolism Medical College and Hospital Kolkata, West Bengal, India
| | - A. Sinha
- Endocrinology & Metabolism Medical College and Hospital Kolkata, West Bengal, India
| | - A. Maiti
- Endocrinology & Metabolism Medical College and Hospital Kolkata, West Bengal, India
| | - M. Chakraborty
- Microbiology, Medical College and Hospital Kolkata, Kolkata,West Bengal, India
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Ledeen R, Chowdhury S, Lu ZH, Chakraborty M, Wu G. Systemic deficiency of GM1 ganglioside in Parkinson's disease tissues and its relation to the disease etiology. Glycoconj J 2022; 39:75-82. [PMID: 34973149 PMCID: PMC8979856 DOI: 10.1007/s10719-021-10025-9] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 09/29/2021] [Accepted: 10/04/2021] [Indexed: 12/29/2022]
Abstract
Following our initial reports on subnormal levels of GM1 in the substantia nigra and occipital cortex of Parkinson’s disease (PD) patients, we have examined additional tissues from such patients and found these are also deficient in the ganglioside. These include innervated tissues intimately involved in PD pathology such as colon, heart and others, somewhat less intimately involved, such as skin and fibroblasts. Finally, we have analyzed GM1 in peripheral blood mononuclear cells, a type of tissue apparently with no direct innervation, and found those too to be deficient in GM1. Those patients were all afflicted with the sporadic form of PD (sPD), and we therefore conclude that systemic deficiency of GM1 is a characteristic of this major type of PD. Age is one factor in GM1 decline but is not sufficient; additional GM1 suppressive factors are involved in producing sPD. We discuss these and why GM1 replacement offers promise as a disease-altering therapy.
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Affiliation(s)
- Robert Ledeen
- Department of Pharmacology, Physiology & Neuroscience, Rutgers The State University of New Jersey, Newark, NJ, 07103, USA.
| | - Suman Chowdhury
- Department of Pharmacology, Physiology & Neuroscience, Rutgers The State University of New Jersey, Newark, NJ, 07103, USA
| | - Zi-Hua Lu
- Department of Pharmacology, Physiology & Neuroscience, Rutgers The State University of New Jersey, Newark, NJ, 07103, USA
| | - Monami Chakraborty
- Department of Pharmacology, Physiology & Neuroscience, Rutgers The State University of New Jersey, Newark, NJ, 07103, USA
| | - Gusheng Wu
- Department of Pharmacology, Physiology & Neuroscience, Rutgers The State University of New Jersey, Newark, NJ, 07103, USA
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Mahankar P, Chakraborty M, Bartakke S, Bafna V. Pearson syndrome- A case report. Pediatric Hematology Oncology Journal 2021. [DOI: 10.1016/j.phoj.2022.03.108] [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: 11/15/2022] Open
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Alselehdar SK, Chakraborty M, Chowdhury S, Alcalay RN, Surface M, Ledeen R. Subnormal GM1 in PBMCs: Promise for Early Diagnosis of Parkinson's Disease? Int J Mol Sci 2021; 22:11522. [PMID: 34768952 PMCID: PMC8583888 DOI: 10.3390/ijms222111522] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 06/25/2021] [Revised: 10/07/2021] [Accepted: 10/15/2021] [Indexed: 12/17/2022] Open
Abstract
The fact that Parkinson's disease (PD) pathologies are well advanced in most PD patients by the time of clinical elucidation attests to the importance of early diagnosis. Our attempt to achieve this has capitalized on our previous finding that GM1 ganglioside is expressed at subnormal levels in virtually all tissues of sporadic PD (sPD) patients including blood cells. GM1 is present in most vertebrate cells, is especially abundant in neurons where it was shown essential for their effective functioning and long term viability. We have utilized peripheral blood mononuclear cells (PBMCs) which, despite their low GM1, we found to be significantly lower in sPD patients compared to age-matched healthy controls. To quantify GM1 (and GD1a) we used high performance thin-layer chromatography combined with cholera toxin B linked to horseradish peroxidase, followed by densitometric quantification. GM1 was also deficient in PBMCs from PD patients with mutations in the glucocerebrosidase gene (PD-GBA), apparently even lower than in sPD. Reasons are given why we believe these results obtained with patients manifesting fully developed PD will apply as well to PD patients in preclinical stages-a topic for future study. We also suggest that these findings point to a potential disease altering therapy for PD once the early diagnosis is established.
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Affiliation(s)
- Samar K. Alselehdar
- Department of Pharmacology, Physiology, and Neuroscience, Rutgers, The State University of NJ, Newark, NJ 07103, USA; (S.K.A.); (M.C.); (S.C.)
| | - Monami Chakraborty
- Department of Pharmacology, Physiology, and Neuroscience, Rutgers, The State University of NJ, Newark, NJ 07103, USA; (S.K.A.); (M.C.); (S.C.)
| | - Suman Chowdhury
- Department of Pharmacology, Physiology, and Neuroscience, Rutgers, The State University of NJ, Newark, NJ 07103, USA; (S.K.A.); (M.C.); (S.C.)
| | - Roy N. Alcalay
- Department of Neurology, Columbia University Irving Medical Center, New York, NY 10032, USA; (R.N.A.); (M.S.)
| | - Matthew Surface
- Department of Neurology, Columbia University Irving Medical Center, New York, NY 10032, USA; (R.N.A.); (M.S.)
| | - Robert Ledeen
- Department of Pharmacology, Physiology, and Neuroscience, Rutgers, The State University of NJ, Newark, NJ 07103, USA; (S.K.A.); (M.C.); (S.C.)
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Jaggi N, Nirwan P, Chakraborty M. Process improvement to effectively manage and reduce sharps injuries in a Tertiary Hospital in Northern India. J Healthc Qual Res 2020; 35:141-148. [PMID: 32446644 DOI: 10.1016/j.jhqr.2020.03.007] [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: 12/19/2019] [Revised: 02/29/2020] [Accepted: 03/17/2020] [Indexed: 11/26/2022]
Abstract
INTRODUCTION AND OBJECTIVES Needle stick injuries are associated with a 0.3-30% risk of transmission of Human Immunodeficiency virus, Hepatitis C virus, and Hepatitis B virus. Despite causing psychological trauma they also involve a huge financial burden. A robust process improvement (RPI) toolkit was introduced in order to effectively manage and reduce needle stick injuries, as well as an attempt to report prevalence, post-exposure management, and associated economic burden. MATERIALS AND METHODS Prospective Observational Study (2015-2018) has been design in a Corporate Tertiary Care Hospital. The participants included were needle stick injuries exposed staff. RPI toolkit was implemented (2015-2018) focusing on root cause analysis, availability of safety engineered devices, immunization and post-exposure management of needle stick injuries exposed staff. The main outcome measure was needle stick injuries incidence. RESULTS A total of 211 needle stick injuries were reported (mean - 52.72/year, needle stick injury incidence - 13.18/year/100 beds). Yearly trends showed a decrease of 21.3% in injuries from 2015 (61) to 2018 (48). Half (106, 50%) of the total injuries were reported among nurses. Use of hypodermic needles was involved in 116 (55%) injuries, with 114 (54%) occurring due to nonadherence to hospital policies. Overall, 204 staff had protective immunity, and 135 (64%) of these had completed their Hepatitis B immunizations. The source was known in 165 (78%) cases, and 113 of these cases had an injury from a source with negative viral markers. A 6-month follow-up was completed in 90 cases. No seroconversion was reported. Overall costs incurred in post-exposure prophylaxis was approximately €30,000 (mean cost €143.50/needle stick injury). CONCLUSION Nurses are most at risk of needle stick injury in healthcare settings. Implementation of RPI toolkit led to a 21.3% reduction in sharps injury incidences. These injuries incur huge financial burden on the hospital. Appropriate immunization strategies saved about €1360 expenditure on post-exposure prophylaxis.
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Affiliation(s)
- N Jaggi
- Artemis Hospital, Sector 51, Gurugram, Haryana 122001, India
| | - P Nirwan
- Artemis Hospital, Sector 51, Gurugram, Haryana 122001, India.
| | - M Chakraborty
- Artemis Hospital, Sector 51, Gurugram, Haryana 122001, India
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12
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Sah RP, Chakraborty M, Prasad K, Pandit M, Tudu VK, Chakravarty MK, Narayan SC, Rana M, Moharana D. Impact of water deficit stress in maize: Phenology and yield components. Sci Rep 2020; 10:2944. [PMID: 32076012 PMCID: PMC7031221 DOI: 10.1038/s41598-020-59689-7] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 01/27/2020] [Indexed: 11/09/2022] Open
Abstract
Fifteen million farmers in India engaged in Maize cultivation. India would require 45 MMT of Maize by 2022. But, only 15% of cultivated area of maize is under irrigation and water shortage has been a challenge for sustainability of maize production. Water deficit stress (WDS) during pre-flowering and grain filling stages massively affects the plant performance due to imprecise traits function. Thus, the effect of WDS on non-drought tolerant (NDT) and drought tolerant (DT) maize lines were investigated. WDS increased the flowering days, days to maturity, anthesis silk interval, decreased the leaf number, abnormal expression of secondary stress responsive traits, loss of normal root architecture which overall lead to a reduction in GY/ha. WDS at flowering and grain filling stage leads to significant yield penalty especially in NDT lines than DT lines. The yield penalty was ranged from 34.28 to 66.15% in NDT and 38.48 to 55.95% in DT lines due to WDS. Using multiple statistics, traits which improve WDS tolerance in maize were identified viz; number of leaves, number of stomata on lower surface of leaf, leaf angle at ear forming node internodal length between 3rd and 4th leaf from top, flag leaf length, flag leaf width, ear per plants, leaf senescence, pollen stainability, root fresh weight and root length. These traits would help in trait specific breeding in maize for WDS tolerance.
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Affiliation(s)
- R P Sah
- ICAR-National Rice Research Institute, Cuttack, Odisha, India.,Department of Genetics and Plant Breeding, Birsa Agricultural University, Kanke, Ranchi, Jharkhand, India
| | - M Chakraborty
- Department of Genetics and Plant Breeding, Birsa Agricultural University, Kanke, Ranchi, Jharkhand, India.
| | - K Prasad
- Department of Genetics and Plant Breeding, Birsa Agricultural University, Kanke, Ranchi, Jharkhand, India
| | - M Pandit
- Department of Genetics and Plant Breeding, Birsa Agricultural University, Kanke, Ranchi, Jharkhand, India
| | - V K Tudu
- Department of Genetics and Plant Breeding, Birsa Agricultural University, Kanke, Ranchi, Jharkhand, India
| | - M K Chakravarty
- Department of Entomology, Birsa Agricultural University, Kanke, Ranchi, Jharkhand, India
| | - S C Narayan
- Department of Genetics and Plant Breeding, Birsa Agricultural University, Kanke, Ranchi, Jharkhand, India
| | - M Rana
- Indian Grassland and Fodder Research Institute, Jhansi, Uttar Pradesh, India
| | - D Moharana
- ICAR-National Rice Research Institute, Cuttack, Odisha, India
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Hossaini F, Munshi S, Chakraborty M. Antimicrobial effects of different extracts of medicinally used green leafy vegetables collected from local market of Dhaka, Bangladesh. Food Res 2020. [DOI: 10.26656/fr.2017.4(3).017] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The present study was carried out to determine the antimicrobial efficacy of green leafy
vegetable samples which are traditionally used as medicinal herbs. Therefore, three
samples each of Neem (Azadirachta indica, leaves), Ivy Gourd (Coccinia grandis, leaves),
Water Spinach (Ipomoea aquatica, leaves) and Skunkvine (Paederia foetida, leaves) were
collected and subjected to microbiological analysis, and agar well diffusion and
microdilution assays to check antimicrobial activity. The samples contained total viable
bacteria and fungi up to 107
and 105 CFU/g, respectively. Staphylococcus spp., Klebsiella
spp. and Pseudomonas spp. were recovered in all the samples. All the samples showed
potential antibacterial activity against most of the tested bacteria, especially their ethanolic
and methanolic extracts. Although, crude and hot water extracts almost had no effect on
the bacterial growth. The MIC value of the samples was found in a range of 3 mg/mL to
12 mg/mL and the average MIC value was recorded to be 6 mg/mL. Overall, the findings
of the present study justified the therapeutic potential of the tested green leafy vegetable
samples.
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Patel TN, Chakraborty M, Bhattacharya P. Microsatellite Instability in Chronic Myeloid Leukemia using D17S261 and D3S643 markers: A Pilot Study in Gujarat Population. Indian J Cancer 2018; 54:426-429. [PMID: 29469071 DOI: 10.4103/ijc.ijc_275_17] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
CONTEXT Tumor progresses through a series of genetic alterations that involve proto-oncogenes and tumor suppressor genes - the gatekeeper, caretakers, and landscaper genes. Microsatellites are short tandem repeat sequences, present over the span of human genome and are known to be variable at multiple loci due to errors in DNA Mismatch Repair machinery. AIM The present study was aimed to evaluate the association between Microsatellite Instability (MSI) and evolution of Chronic Myeloid Leukemia (CML) - genetically a rare event but profound in this pilot study. SETTINGS AND DESIGNS We explore the possibility of MSI in primary CML patients confirmed by t(9;22) using capillary electrophoresis. Fifteen CML patients and healthy individual samples, respectively, were used to study the markers D17S261 and D3S643. MATERIALS AND METHODS The DNA was amplified using tagged and nontagged primers and further subjected to bioanalysis and fragment analysis. RESULTS While the results from bioanalyzer fluctuated, fragment analysis indicated the presence of microsatellite variability in 80% of the patients' samples as compared to no MSI in normal individuals for both the markers. CONCLUSION These findings suggest that MSI is a genetic event that may have a role in CML progression or evolution. Further studies are warranted to understand the plausible underlying causes.
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Affiliation(s)
- T N Patel
- Departments of Integrative Biology, Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - M Chakraborty
- Departments of Biomedical Genetics, Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - P Bhattacharya
- Departments of Integrative Biology, Vellore Institute of Technology, Vellore, Tamil Nadu, India
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Sharma N, Chakraborty M, Neog NK, Bandyopadhyay M. Development and characterization of a helicon plasma source. Rev Sci Instrum 2018; 89:083508. [PMID: 30184689 DOI: 10.1063/1.5030624] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 08/02/2018] [Indexed: 06/08/2023]
Abstract
The Helicon Plasma Source (HeliPS) designed and developed at the Centre of Plasma Physics-Institute for Plasma Research is a versatile helicon plasma device, which operates in a wide range of magnetic field configurations from 50 G to 500 G. This device is dedicated to perform a broad range of research activities. The main objective for development of the HeliPS is to carry out studies on ion-ion plasmas in electronegative gases. In the near future, ion-ion plasmas will be formed in electronegative gases in the downstream of the plasma production region. Although the system is primarily designed to carry out ion-ion plasma experiments, the same system can also be used for experimental studies on some basic helicon plasma properties such as wave propagation, wave coupling, and plasma instability. At present, argon plasma is produced with a RF power supply of 13.56 MHz frequency. External circuit parameters, such as antenna current, plasma resistance (Rp), and internal parameters, such as electron density and temperature, are measured. The details of the experimental setup development, device characteristic, as well as preliminary plasma production and characterization to confirm occurrence of the helicon plasma in the system are presented in this article.
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Affiliation(s)
- N Sharma
- Centre of Plasma Physics-Institute for Plasma Research, Tepesia, Sonapur, Kamrup, Assam 782402, India
| | - M Chakraborty
- Centre of Plasma Physics-Institute for Plasma Research, Tepesia, Sonapur, Kamrup, Assam 782402, India
| | - N K Neog
- Centre of Plasma Physics-Institute for Plasma Research, Tepesia, Sonapur, Kamrup, Assam 782402, India
| | - M Bandyopadhyay
- Institute for Plasma Research, HBNI, Bhat, Gandhinagar 382428, Gujarat, India
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16
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Chakraborty M, Mukhopadhyay S, Dasgupta A, Patsa S, Anjum N, Ray JG. A new approach of oral cancer detection using bilateral texture features in digital infrared thermal images. Annu Int Conf IEEE Eng Med Biol Soc 2017; 2016:1377-1380. [PMID: 28268582 DOI: 10.1109/embc.2016.7590964] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Oral cancer is one of the most prevalent form of cancer and its severity is aggrandized specially among the socio-economically backward population in developing countries. A major fraction of patient population is unable to avail diagnosis for oral cancer due to scarcity of state-of-the-art infrastructure and experienced oral and maxillofacial pathologist. Contemporary gold standard of oral cancer confirmation relies on biopsy report. But biopsy is invasive and thus patients are usually reluctant to undergo this test. Moreover, biopsy yields considerable false negatives if investigated tissue is not collected precisely from the carcinogenic location. Till date, there is dearth of computer aided pre-screening tool for detection of oral cancer. The paper presents Digital Infrared Thermal Imaging as a viable modality for early screening of oral cancer. This is the pioneering attempt to discriminate normal subjects from patients by leveraging discriminating texture features on oral thermograms. Statistically significant texture features were selected from a) both halves of frontal face and b) right and left profile faces. Due to disparity of distribution of facial temperature between normal subjects and patients, the corresponding texture features form discriminative class specific local clusters. Such local conglomeration was exploited using k-means and fuzzy k-means clustering. We adopt the concept of cluster prototype classifier which assigns label to each cluster according to majority class labels within that cluster. Highest classification accuracy of 86.12% is attained on fusion of features from left and right half of frontal face of precancerous subject followed by fuzzy k-means guided cluster prototype classification. The proposed work outperforms our previously developed pre-screening framework by upto 6.5%. Such promising results boosts the viability of our approach.
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Affiliation(s)
| | - M. Chakraborty
- Metallurgical Engineering Department, Indian Institute of Technology, Kharagpur 721302, India
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18
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Affiliation(s)
- S N Biswas
- Department of General Medicine, Midnapore Medical College and Hospital, Medinipur, West Bengal, India
| | - P P Chakraborty
- Department of General Medicine, Midnapore Medical College and Hospital, Medinipur, West Bengal, India
| | - M Chakraborty
- Department of Microbiology, Calcutta School of Tropical Medicine, Kolkata, West Bengal, India
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19
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Raut AN, Nandanwar SU, Suryawanshi YR, Chakraborty M, Jauhari S, Mukhopadhyay S, Shenoy KT, Bajaj HC. Liquid phase selective hydrogenation of phenol to cyclohexanone over Ru/Al2O3 nanocatalyst under mild conditions. Kinet Catal 2016. [DOI: 10.1134/s0023158416010110] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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20
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Chakraborty M, Reddy PS, Mustafa G, Rajesh G, Narasu VML, Udayasuriyan V, Rana D. Transgenic rice expressing the cry2AX1 gene confers resistance to multiple lepidopteran pests. Transgenic Res 2016; 25:665-78. [DOI: 10.1007/s11248-016-9954-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Accepted: 03/23/2016] [Indexed: 10/22/2022]
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21
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Chakraborty M, Sairam Reddy P, Laxmi Narasu M, Krishna G, Rana D. Agrobacterium-mediated genetic transformation of commercially elite rice restorer line using nptII gene as a plant selection marker. Physiol Mol Biol Plants 2016; 22:51-60. [PMID: 27186018 PMCID: PMC4840146 DOI: 10.1007/s12298-015-0334-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Revised: 11/15/2015] [Accepted: 12/06/2015] [Indexed: 05/29/2023]
Abstract
Transformation of commercially important indica cultivars remains challenging for the scientific community even though Agrobacterium-mediated transformation protocols for a few indica rice lines have been well established. We report successful transformation of a commercially important restorer line JK1044R of indica rice hybrid JKRH 401. While following existing protocol, we optimized several parameters for callusing, regeneration and genetic transformation of JK1044R. Calli generated from the rice scutellum tissue were used for transformation by Agrobacterium harboring pCAMBIA2201. A novel two tire selection scheme comprising of Geneticin (G418) and Paramomycin were deployed for selection of transgenic calli as well as regenerated plantlets that expressed neomycin phosphotransferase-II gene encoded by the vector. One specific combination of G418 (30 mg l(-1)) and Paramomycin (70 mg l(-1)) was very effective for calli selection. Transformed and selected calli were detected by monitoring the expression of the reporter gene uidA (GUS). Regenerated plantlets were confirmed through PCR analysis of nptII and gus genes specific primers as well as dot blot using gus gene specific as probe.
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Affiliation(s)
- M. Chakraborty
- />Department of Biotechnology, Jawaharlal Nehru Technological University (JNTU), Hyderabad, Telangana 500072 India
- />Biotechnology Division, J.K Agri. Genetics Pvt. Ltd., Hyderabad, Telangana 500016 India
| | - P. Sairam Reddy
- />Biotechnology Division, J.K Agri. Genetics Pvt. Ltd., Hyderabad, Telangana 500016 India
| | - M. Laxmi Narasu
- />Department of Biotechnology, Jawaharlal Nehru Technological University (JNTU), Hyderabad, Telangana 500072 India
| | - Gaurav Krishna
- />Biotechnology Division, J.K Agri. Genetics Pvt. Ltd., Hyderabad, Telangana 500016 India
- />Jacob School of Biotechnology & Bioengineering, Sam Higginbottom Institute of Agriculture, Technology & Sciences (Formerly Allahabad Agricultural Institute), Deemed University, Allahabad, 211007 Uttar Pradesh India
| | - Debashis Rana
- />Biotechnology Division, J.K Agri. Genetics Pvt. Ltd., Hyderabad, Telangana 500016 India
- />Bayer CropScience-Seeds, Bayer (South East Asia) Pte Ltd, Singapore, Singapore
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22
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Singh SK, Rajawat AS, Rathore BP, Bahuguna IM, Chakraborty M. Detection of Glacier Lakes Buried under Snow by RISAT-1 SAR in the Himalayan Terrain. CURR SCI INDIA 2015. [DOI: 10.18520/cs/v109/i9/1735-1739] [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: 11/15/2022]
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23
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Singh SK, Rajawat AS, Rathore BP, Bahuguna IM, Chakraborty M. Detection of Glacier Lakes Buried under Snow by RISAT-1 SAR in the Himalayan Terrain. CURR SCI INDIA 2015. [DOI: 10.18520/v109/i9/1735-1739] [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: 11/15/2022]
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24
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Nandanwar SU, Dabbawala AA, Chakraborty M, Bajaj HC, Mukhopadhyay S, Shenoy KT. Partial hydrogenation of benzene to cyclohexene over Ru/γ-Al2O3 nanocatalyst via w/o microemulsion using boric acid and ethanolamine additives. Res Chem Intermed 2015. [DOI: 10.1007/s11164-015-2102-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Patel RR, Barad JM, Nandanwar SU, Dabbawala AA, Chakraborty M, Parikh PA, Baja HC. Cellulose supported ruthenium nanoclusters as an efficient and recyclable catalytic system for benzene hydrogenation under mild conditions. Kinet Catal 2015. [DOI: 10.1134/s002315841502007x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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26
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Bala N, Saha S, Chakraborty M, Maiti M, Das S, Basu R, Nandy P. Green synthesis of zinc oxide nanoparticles using Hibiscus subdariffa leaf extract: effect of temperature on synthesis, anti-bacterial activity and anti-diabetic activity. RSC Adv 2015. [DOI: 10.1039/c4ra12784f] [Citation(s) in RCA: 324] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Particle size dependent anti-bacterial and anti-diabetic activities of green synthesized ZnO nanoparticles.
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Affiliation(s)
- Niranjan Bala
- Department of Physics
- Jadavpur University
- Kolkata 700032
- India
| | - S. Saha
- Department of Physics
- Jadavpur University
- Kolkata 700032
- India
| | - M. Chakraborty
- Department of Physics
- Jadavpur University
- Kolkata 700032
- India
| | - M. Maiti
- Department of Physics
- Jadavpur University
- Kolkata 700032
- India
| | - S. Das
- Department of Physics
- Jadavpur University
- Kolkata 700032
- India
| | - R. Basu
- Department of Physics
- Jogamaya Devi College
- Kolkata 700 026
- India
| | - P. Nandy
- Centre for Interdisciplinary Research and Education
- Kolkata 700 068
- India
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Dey P, Mall N, Chattopadhyay A, Chakraborty M, Maiti MK. Enhancement of lipid productivity in oleaginous Colletotrichum fungus through genetic transformation using the yeast CtDGAT2b gene under model-optimized growth condition. PLoS One 2014; 9:e111253. [PMID: 25375973 PMCID: PMC4222912 DOI: 10.1371/journal.pone.0111253] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Accepted: 09/27/2014] [Indexed: 01/17/2023] Open
Abstract
Oleaginous fungi are of special interest among microorganisms for the production of lipid feedstocks as they can be cultured on a variety of substrates, particularly waste lingocellulosic materials, and few fungal strains are reported to accumulate inherently higher neutral lipid than bacteria or microalgae. Previously, we have characterized an endophytic filamentous fungus Colletotrichum sp. DM06 that can produce total lipid ranging from 34% to 49% of its dry cell weight (DCW) upon growing with various carbon sources and nutrient-stress conditions. In the present study, we report on the genetic transformation of this fungal strain with the CtDGAT2b gene, which encodes for a catalytically efficient isozyme of type-2 diacylglycerol acyltransferase (DGAT) from oleaginous yeast Candida troplicalis SY005. Besides the increase in size of lipid bodies, total lipid titer by the transformed Colletotrichum (lipid content ∼73% DCW) was found to be ∼1.7-fold more than the wild type (lipid content ∼38% DCW) due to functional activity of the CtDGAT2b transgene when grown under standard condition of growth without imposition of any nutrient-stress. Analysis of lipid fractionation revealed that the neutral lipid titer in transformants increased up to 1.8-, 1.6- and 1.5-fold compared to the wild type when grown under standard, nitrogen stress and phosphorus stress conditions, respectively. Lipid titer of transformed cells was further increased to 1.7-fold following model-based optimization of culture conditions. Taken together, ∼2.9-fold higher lipid titer was achieved in Colletotrichum fungus due to overexpression of a rate-limiting crucial enzyme of lipid biosynthesis coupled with prediction-based bioprocess optimization.
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Affiliation(s)
- Prabuddha Dey
- Adv. Lab. for Plant Genetic Engineering, Advanced Technology Development Center, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Nikunj Mall
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Atrayee Chattopadhyay
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Monami Chakraborty
- Adv. Lab. for Plant Genetic Engineering, Advanced Technology Development Center, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Mrinal K. Maiti
- Adv. Lab. for Plant Genetic Engineering, Advanced Technology Development Center, Indian Institute of Technology Kharagpur, Kharagpur, India
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, India
- * E-mail:
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Majumdar P, Singh SB, Dhara S, Chakraborty M. Influence of boron addition to Ti-13Zr-13Nb alloy on MG63 osteoblast cell viability and protein adsorption. Mater Sci Eng C Mater Biol Appl 2014; 46:62-8. [PMID: 25491960 DOI: 10.1016/j.msec.2014.10.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Revised: 09/02/2014] [Accepted: 10/02/2014] [Indexed: 10/24/2022]
Abstract
Cell proliferation, cell morphology and protein adsorption on near β-type Ti-13Zr-13Nb (TZN) alloy and Ti-13Zr-13Nb-0.5B (TZNB) composite have been investigated and compared to evaluate the effect of boron addition which has been added to the Ti alloy to improve their poor tribological properties by forming in situ TiB precipitates. MG63 cell proliferation on substrates with different chemistry but the same topography was compared. The MTT assay test showed that the cell viability on the TZN alloy was higher than the boron containing TZNB composite after 36 h of incubation and the difference was pronounced after 7 days. However, both the materials showed substantially higher cell attachment than the control (polystyrene). For the same period of incubation in fetal bovine serum (FBS), the amount of protein adsorbed on the surface of boron free TZN samples was higher than that in the case of boron containing TZNB composite. The presence of boron in the TZN alloy influenced protein adsorption and cell response and they are lower in TZNB than in TZN as a result of the associated difference in chemical characteristics.
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Affiliation(s)
- P Majumdar
- School of Mechanical Science, Indian Institute of Technology, Bhubaneswar, India.
| | - S B Singh
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Kharagpur, India
| | - S Dhara
- School Medical Science and Technology, Indian Institute of Technology, Kharagpur, India
| | - M Chakraborty
- School of Mechanical Science, Indian Institute of Technology, Bhubaneswar, India
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Sellappan B, Chakraborty M, Cherian S. Congenital hypothyroidism presenting as pseudo-obstruction in preterm infants. BMJ Case Rep 2014; 2014:bcr2013201082. [PMID: 24832703 PMCID: PMC4025204 DOI: 10.1136/bcr-2013-201082] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/16/2014] [Indexed: 11/03/2022] Open
Abstract
Congenital hypothyroidism (CH) presenting as acute pseudo-obstruction is uncommon. We report two premature infants presenting with acute bowel obstruction subsequently diagnosed to have CH. Both responded well to medical management with thyroid supplementation.
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Affiliation(s)
- B Sellappan
- Neonatal Unit, University Hospital of Wales, Cardiff, UK
| | - M Chakraborty
- Neonatal Unit, University Hospital of Wales, Cardiff, UK
| | - S Cherian
- Neonatal Unit, University Hospital of Wales, Cardiff, UK
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Dey P, Chakraborty M, Kamdar MR, Maiti MK. Functional characterization of two structurally novel diacylglycerol acyltransferase2 isozymes responsible for the enhanced production of stearate-rich storage lipid in Candida tropicalis SY005. PLoS One 2014; 9:e94472. [PMID: 24732323 PMCID: PMC3986092 DOI: 10.1371/journal.pone.0094472] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Accepted: 03/16/2014] [Indexed: 12/18/2022] Open
Abstract
Diacylglycerol acyltransferase (DGAT) activity is an essential enzymatic step in the formation of neutral lipid i.e., triacylglycerol in all living cells capable of accumulating storage lipid. Previously, we characterized an oleaginous yeast Candida tropicalis SY005 that yields storage lipid up to 58% under a specific nitrogen-stress condition, when the DGAT-specific transcript is drastically up-regulated. Here we report the identification, differential expression and function of two DGAT2 gene homologues- CtDGAT2a and CtDGAT2b of this C. tropicalis. Two protein isoforms are unique with respect to the presence of five additional stretches of amino acids, besides possessing three highly conserved motifs known in other reported DGAT2 enzymes. Moreover, the CtDGAT2a and CtDGAT2b are characteristically different in amino acid sequences and predicted protein structures. The CtDGAT2b isozyme was found to be catalytically 12.5% more efficient than CtDGAT2a for triacylglycerol production in a heterologous yeast system i.e., Saccharomyces cerevisiae quadruple mutant strain H1246 that is inherently defective in neutral lipid biosynthesis. The CtDGAT2b activity rescued the growth of transformed S. cerevisiae mutant cells, which are usually non-viable in the medium containing free fatty acids by incorporating them into triacylglycerol, and displayed preferential specificity towards saturated acyl species as substrate. Furthermore, we document that the efficiency of triacylglycerol production by CtDGAT2b is differentially affected by deletion, insertion or replacement of amino acids in five regions exclusively present in two CtDGAT2 isozymes. Taken together, our study characterizes two structurally novel DGAT2 isozymes, which are accountable for the enhanced production of storage lipid enriched with saturated fatty acids inherently in C. tropicalis SY005 strain as well as in transformed S. cerevisiae neutral lipid-deficient mutant cells. These two genes certainly will be useful for further investigation on the novel structure-function relationship of DGAT repertoire, and also in metabolic engineering for the enhanced production of lipid feedstock in other organisms.
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Affiliation(s)
- Prabuddha Dey
- Advanced Laboratory for Plant Genetic Engineering, Advanced Technology Development Centre, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Monami Chakraborty
- Advanced Laboratory for Plant Genetic Engineering, Advanced Technology Development Centre, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Maulik R. Kamdar
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Mrinal K. Maiti
- Advanced Laboratory for Plant Genetic Engineering, Advanced Technology Development Centre, Indian Institute of Technology Kharagpur, Kharagpur, India
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, India
- * E-mail:
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Kumar A, Koch A, Borthakur R, Chakraborty M, De A, Phukan A, Bez G, Lal R. Synthesis and spectroscopic characterization of monometallic molybdenum (VI) complexes derived from bis(2-hydroxy-1-naphthaldehyde)succinoyldihydrazone. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.01.048] [Citation(s) in RCA: 3] [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: 11/17/2022]
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Vadakkekara R, Chakraborty M, Parikh PA. Synthesis, characterization, and application of monodisperse gelatin-stabilized silver nanospheres in reduction of aromatic nitro compounds. Colloid J 2014. [DOI: 10.1134/s1061933x14010153] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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De D, Chakraborty M, Majumdar S, Giri S. Bandgap engineering through nanocrystalline magnetic alloy grafting on reduced graphene oxide. Phys Chem Chem Phys 2014; 16:19661-7. [DOI: 10.1039/c4cp02259a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [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
Grafting of nanocrystalline Co80Ni20on reduced graphene oxide causes a significantly large moment (1.2μB), ∼10 times localization of conductivity and significant magnetoconductance of hybrid-materials, which is promising toward spintronic applications.
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Affiliation(s)
- D. De
- Department of Solid State Physics
- Indian Association for the Cultivation of Science
- Kolkata 700 032, India
- Department of Physics
- NITMAS
| | - M. Chakraborty
- Department of Solid State Physics
- Indian Association for the Cultivation of Science
- Kolkata 700 032, India
- Department of Physics
- Indian Institute of Technology
| | - S. Majumdar
- Department of Solid State Physics
- Indian Association for the Cultivation of Science
- Kolkata 700 032, India
| | - S. Giri
- Department of Solid State Physics
- Indian Association for the Cultivation of Science
- Kolkata 700 032, India
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Suryawanshi YR, Chakraborty M, Jauhari S, Mukhopadhyay S, Shenoy KT, Shridharkrishna R. Microwave irradiation solvothermal technique: an optimized protocol for size-control synthesis of Ru nanoparticles. Cryst Res Technol 2013. [DOI: 10.1002/crat.201200412] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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35
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Nandanwar SU, Chakraborty M, Mukhopadhyay S, Shenoy KT. Benzene hydrogenation over highly active monodisperse Ru/γ-Al2O3 nanocatalyst synthesized by (w/o) reverse microemulsion. Reac Kinet Mech Cat 2012. [DOI: 10.1007/s11144-012-0526-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Raji V, Chakraborty M, Parikh PA. Synthesis of Starch-Stabilized Silver Nanoparticles and Their Antimicrobial Activity. Particulate Science and Technology 2012. [DOI: 10.1080/02726351.2011.626510] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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37
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Majumdar P, Singh S, Dhara S, Chakraborty M. Influence of in situ TiB reinforcements and role of heat treatment on mechanical properties and biocompatibility of Ti-alloys. J Mech Behav Biomed Mater 2012; 10:1-12. [DOI: 10.1016/j.jmbbm.2012.02.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2011] [Revised: 02/13/2012] [Accepted: 02/19/2012] [Indexed: 10/28/2022]
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Yu T, Jain A, Chakraborty M, Wilson N, Hill A. Factors Influencing the Likelihood of Female Medical Students Pursuing Surgery: A Critical Review. J Surg Res 2012. [DOI: 10.1016/j.jss.2011.11.908] [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: 10/14/2022]
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39
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Mukherjee S, Chakraborty M, Panda A, Bhattacharya S, Moulik S. Physicochemistry of bis-alkyltrimethylammonium dichromate, tungstate and molybdate amphiphiles: Synthesis, characterization, behaviors at the air–water interface and self-aggregation in aqueous medium. Colloids Surf A Physicochem Eng Asp 2011. [DOI: 10.1016/j.colsurfa.2011.07.031] [Citation(s) in RCA: 5] [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: 10/18/2022]
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Majumdar P, Singh SB, Chatterjee UK, Chakraborty M. Corrosion behaviour of heat treated boron free and boron containing Ti-13Zr-13Nb (wt%) alloy in simulated body fluid. J Mater Sci Mater Med 2011; 22:797-807. [PMID: 21442191 DOI: 10.1007/s10856-011-4282-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2010] [Accepted: 03/07/2011] [Indexed: 05/30/2023]
Abstract
The corrosion behaviour of heat treated Ti-13Zr-13Nb (TZN) and Ti-13Zr-13Nb-0.5B (TZNB) alloys in Hank's solution has been investigated. The microstructure of the heat treated TZN alloy consisted of α, β or martensite. Addition of boron to TZN alloy led to the formation of dispersed TiB particles and modification of microstructure. In general, the furnace cooled TZN sample showed lower corrosion potential (E(corr)) than the air cooled sample. Aging of water quenched samples decreased the E(corr) value. The passive current density of TZN samples varied within a narrow range. Presence of boron in TZN alloy decreased the corrosion potential and substantially increased the passive current density. Results showed that boron deteriorated the corrosion resistance of TZN alloy.
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Affiliation(s)
- P Majumdar
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Kharagpur, India,
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Majumdar P, Singh S, Chakraborty M. The influence of heat treatment and role of boron on sliding wear behaviour of ββ-type Ti–35Nb–7.2Zr–5.7Ta alloy in dry condition and in simulated body fluids. J Mech Behav Biomed Mater 2011; 4:284-97. [DOI: 10.1016/j.jmbbm.2010.10.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2010] [Revised: 10/15/2010] [Accepted: 10/23/2010] [Indexed: 10/18/2022]
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Donowitz M, Singh S, Singh P, Chakraborty M, Chen Y, Murtazina R, Gucek M, Cole RN, Zachos NC, Salahuddin FF, Kovbasnjuk O, Broere N, Smalley-Freed WG, Reynolds AB, Hubbard AL, Seidler U, Weinman E, de Jonge HR, Hogema BM, Li X. Alterations in the proteome of the NHERF2 knockout mouse jejunal brush border membrane vesicles. Physiol Genomics 2011; 43:674-84. [PMID: 21427361 DOI: 10.1152/physiolgenomics.00258.2010] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
To identify additional potential functions for the multi-PDZ domain containing protein Na+/H+ exchanger regulatory factor 2 (NHERF2), which is present in the apical domain of intestinal epithelial cells, proteomic studies of mouse jejunal villus epithelial cell brush border membrane vesicles compared wild-type to homozygous NHERF2 knockout FVB mice by a two-dimensional liquid chromatography-tandem mass spectrometry (LC-MS/MS)-iTRAQ approach. Jejunal architecture appeared normal in NHERF2 null in terms of villus length and crypt depth, Paneth cell number, and microvillus structure by electron microscopy. There was also no change in proliferative activity based on BrdU labeling. Four brush border membrane vesicles (BBMV) preparations from wild-type mouse jejunum were compared with four preparations from NHERF2 knockout mice. LC-MS/MS identified 450 proteins in both matched wild-type and NHERF2 null BBMV; 13 proteins were changed in two or more separate BBMV preparations (9 increased and 4 decreased in NHERF2 null mice), while an additional 92 proteins were changed in a single BBMV preparation (68 increased and 24 decreased in NHERF2 null mice). These proteins were categorized as 1) transport proteins (one increased and two decreased in NHERF2 null); 2) signaling molecules (2 increased in NHERF2 null); 3) cytoskeleton/junctional proteins (4 upregulated and 1 downregulated in NHERF2 null); and 4) metabolic proteins/intrinsic BB proteins) (2 upregulated and 1 downregulated in NHERF2 null). Immunoblotting of BBMV was used to validate or extend the findings, demonstrating increase in BBMV of NHERF2 null of MCT1, coronin 3, and ezrin. The proteome of the NHERF2 null mouse small intestinal BB demonstrates up- and downregulation of multiple transport proteins, signaling molecules, cytoskeletal proteins, tight junctional and adherens junction proteins, and proteins involved in metabolism, suggesting involvement of NHERF2 in multiple apical regulatory processes and interactions with luminal contents.
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Affiliation(s)
- M Donowitz
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205-2195, USA.
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43
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Nandanwar SU, Chakraborty M, Mukhopadhyay S, Shenoy KT. Stability of ruthenium nanoparticles synthesized by solvothermal method. Cryst Res Technol 2011. [DOI: 10.1002/crat.201100025] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Beeton ML, Maxwell NC, Davies PL, Nuttall D, McGreal E, Chakraborty M, Spiller OB, Kotecha S. Role of pulmonary infection in the development of chronic lung disease of prematurity. Eur Respir J 2010; 37:1424-30. [PMID: 20884745 DOI: 10.1183/09031936.00037810] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
We studied the role of ante- and post-natal infection in the development of chronic lung disease (CLD) of prematurity. 192 newborn infants (61 term and 131 pre-term of <34 weeks gestation: 88 with respiratory distress syndrome, 35 developed CLD and eight died) were recruited. 16S ribosomal RNA (rRNA) genes were identified by PCR of DNA isolated from 840 gastric and lung fluid samples. Ureaplasma spp. were also cultured. Presence of 16S rRNA genes (OR 1.6, 95% CI 1.2-2.2) and Ureaplasma spp. (OR 3.6, 95% CI 1.7-7.7) was significantly associated with the development of CLD. This association remained if the 16S rRNA genes and Ureaplasma spp. were first identified within the first 3 days of life (OR 2.4 (95% CI 1.4-4.1) and 3.8 (95% CI 1.4-10.0), respectively) or if first identified after 3 days of age (OR 1.7 (95% CI 1.1-2.8) and OR 5.1 (95% CI 1.3-19.8), respectively). Peak lung fluid interleukin (IL)-6 and IL-8 were significantly associated with presence of microbes (p<0.0001 and p=0.0001, respectively) and development of CLD (p=0.003 and 0.001, respectively). Both early and late microbial presence in neonatal lung fluid samples was significantly associated with the development of CLD suggesting that both ante- and post-natal infection play a role in the development of CLD.
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Affiliation(s)
- M L Beeton
- Department of Child Health, School of Medicine, Cardiff University, Cardiff, CF14 4XN, UK
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Donowitz M, Singh S, Singh P, Salahuddin FF, Chen Y, Chakraborty M, Murtazina R, Gucek M, Cole RN, Zachos NC, Kovbasnjuk O, Broere N, Smalley-Freed WG, Reynolds AB, Hubbard AL, Seidler U, Weinman E, de Jonge HR, Hogema BM, Li X. Alterations in the proteome of the NHERF1 knockout mouse jejunal brush border membrane vesicles. Physiol Genomics 2010; 42A:200-10. [PMID: 20736413 DOI: 10.1152/physiolgenomics.00001.2010] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Na/H exchanger regulatory factor 1 (NHERF1) is a scaffold protein made up of two PDZ domains and an ERM binding domain. It is in the brush border of multiple epithelial cells where it modulates 1) Na absorption by regulating NHE3 complexes and cytoskeletal association, 2) Cl secretion through trafficking of CFTR, and 3) Na-coupled phosphate absorption through membrane retention of NaPi2a. To further understand the role of NHERF1 in regulation of small intestinal Na absorptive cell function, with emphasis on apical membrane transport regulation, quantitative proteomic analysis was performed on brush border membrane vesicles (BBMV) prepared from wild-type (WT) and homozygous NHERF1 knockout mouse jejunal villus Na absorptive cells. Jejunal architecture appeared normal in NHERF1 null; however, there was increased proliferative activity, as indicated by increased crypt BrdU staining. LC-MS/MS analysis using iTRAQ to compare WT and NHERF1 null BBMV identified 463 proteins present in both WT and NHERF1 null BBMV of simultaneously prepared and studied samples. Seventeen proteins had an altered amount of expression between WT and NHERF1 null in two or more separate preparations, and 149 total proteins were altered in at least one BBMV preparation. The classes of the majority of proteins altered included transport proteins, signaling and trafficking proteins, and proteins involved in proliferation and cell division. Affected proteins also included tight junction and adherens junction proteins, cytoskeletal proteins, as well as metabolic and BB digestive enzymes. Changes in abundance of several proteins were confirmed by immunoblotting [increased CEACAM1, decreased ezrin (p-ezrin), NHERF3, PLCβ3, E-cadherin, p120, β-catenin]. The changes in the jejunal BBMV proteome of NHERF1 null mice are consistent with a more complex role of NHERF1 than just forming signaling complexes and anchoring proteins to the apical membrane and include at least alterations in proteins involved in transport, signaling, and proliferation.
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Affiliation(s)
- M Donowitz
- Department of Medicine, Div. of Gastroenterology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205-2195, USA.
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Majumdar P, Singh S, Chakraborty M. Wear properties of Ti–13Zr–13Nb (wt.%) near β titanium alloy containing 0.5wt.% boron in dry condition, Hank's solution and bovine serum. Materials Science and Engineering: C 2010. [DOI: 10.1016/j.msec.2010.05.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Lal R, Chakraborty M, Chanu O, Choudhury S, Borthakur R, Copperfield S, Kumar A. Synthesis and characterization of heterobimetallic Ni(II)–Zn(II) complexes from bis(2-hydroxy-1 -naphthaldehyde)succinoyldihydrazone. J COORD CHEM 2010. [DOI: 10.1080/00958971003759077] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- R.A. Lal
- a Department of Chemistry , North-Eastern Hill University , Shillong–793022, Meghalaya, India
| | - M. Chakraborty
- a Department of Chemistry , North-Eastern Hill University , Shillong–793022, Meghalaya, India
| | - O.B. Chanu
- a Department of Chemistry , North-Eastern Hill University , Shillong–793022, Meghalaya, India
| | - S. Choudhury
- a Department of Chemistry , North-Eastern Hill University , Shillong–793022, Meghalaya, India
| | - R. Borthakur
- a Department of Chemistry , North-Eastern Hill University , Shillong–793022, Meghalaya, India
| | - S. Copperfield
- a Department of Chemistry , North-Eastern Hill University , Shillong–793022, Meghalaya, India
| | - A. Kumar
- b Institute of Chemistry , Academia Sinica 128, Academia Road, Sec. 2, Taipei 115, Taiwan, ROC
- c Department of Chemistry, Faculty of Science and Agriculture , The University of West Indies , St. Augustine, Trinidad and Tobago, West Indies
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Khanna P, Kumar RR, Asdaq SMB, Nayeem N, Chakraborty M. Cardioprotective Activity of Methanolic Extract of Aegle Marmelos Leaf Extract against Isoproterenol Induced Myocardial Damage in Rats. Journal of Pharmaceutical Research 2010. [DOI: 10.18579/jpcrkc/2010/9/1/79479] [Citation(s) in RCA: 3] [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: 11/22/2022] Open
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Lal R, Choudhury S, Ahmed A, Chakraborty M, Borthakur R, Kumar A. Synthesis and spectral studies of nickel(II) complexes derived from disalicylaldehyde oxaloyldihydrazone. J COORD CHEM 2009. [DOI: 10.1080/00958970903160972] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- R.A. Lal
- a Department of Chemistry , North-Eastern Hill University , Shillong 793022, Meghalaya, India
| | - S. Choudhury
- a Department of Chemistry , North-Eastern Hill University , Shillong 793022, Meghalaya, India
| | - A. Ahmed
- a Department of Chemistry , North-Eastern Hill University , Shillong 793022, Meghalaya, India
| | - M. Chakraborty
- a Department of Chemistry , North-Eastern Hill University , Shillong 793022, Meghalaya, India
| | - R. Borthakur
- a Department of Chemistry , North-Eastern Hill University , Shillong 793022, Meghalaya, India
| | - A. Kumar
- b Institute of Chemistry , Academia Sinica , 128 Academia Road, Sec.2, Nankang, Taipei, 115 Taiwan, R.O.C
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Modhera B, Chakraborty M, Parikh PA, Jasra RV. Synthesis of nano-crystalline zeolite β: Effects of crystallization parameters. Cryst Res Technol 2009. [DOI: 10.1002/crat.200800474] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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