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Qian T, Deprato A, Debnath S, Haldar P, Chattopadhyay D, Garcia-Aymerich J, Annesi-Maesano I, Patel N, Lacy P, Moitra S, Moitra S. Association between allergic conditions and school absenteeism among Indian adolescents. Clin Exp Allergy 2024; 54:148-151. [PMID: 37984470 DOI: 10.1111/cea.14424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 10/30/2023] [Accepted: 11/02/2023] [Indexed: 11/22/2023]
Affiliation(s)
- Tina Qian
- Alberta Respiratory Centre and Division of Pulmonary Medicine, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Andy Deprato
- Alberta Respiratory Centre and Division of Pulmonary Medicine, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
| | | | - Prasun Haldar
- Supreme Institute of Management and Technology, Mankundu, India
| | | | - Judith Garcia-Aymerich
- ISGlobal, Barcelona, Spain
- University of Pompeu Fabra, Barcelona, Spain
- Center for Biomedical Research in Epidemiology and Public Health (CIBERESP), Barcelona, Spain
| | - Isabella Annesi-Maesano
- INSERM, Paris, France
- Desbrest Institute of Epidemiology and Public Health (IDESP), University of Montpellier, Montpellier, France
| | - Neel Patel
- Alberta Respiratory Centre and Division of Pulmonary Medicine, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Paige Lacy
- Alberta Respiratory Centre and Division of Pulmonary Medicine, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | | | - Subhabrata Moitra
- Alberta Respiratory Centre and Division of Pulmonary Medicine, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
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Effects of empagliflozin on progression of chronic kidney disease: a prespecified secondary analysis from the empa-kidney trial. Lancet Diabetes Endocrinol 2024; 12:39-50. [PMID: 38061371 PMCID: PMC7615591 DOI: 10.1016/s2213-8587(23)00321-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND Sodium-glucose co-transporter-2 (SGLT2) inhibitors reduce progression of chronic kidney disease and the risk of cardiovascular morbidity and mortality in a wide range of patients. However, their effects on kidney disease progression in some patients with chronic kidney disease are unclear because few clinical kidney outcomes occurred among such patients in the completed trials. In particular, some guidelines stratify their level of recommendation about who should be treated with SGLT2 inhibitors based on diabetes status and albuminuria. We aimed to assess the effects of empagliflozin on progression of chronic kidney disease both overall and among specific types of participants in the EMPA-KIDNEY trial. METHODS EMPA-KIDNEY, a randomised, controlled, phase 3 trial, was conducted at 241 centres in eight countries (Canada, China, Germany, Italy, Japan, Malaysia, the UK, and the USA), and included individuals aged 18 years or older with an estimated glomerular filtration rate (eGFR) of 20 to less than 45 mL/min per 1·73 m2, or with an eGFR of 45 to less than 90 mL/min per 1·73 m2 with a urinary albumin-to-creatinine ratio (uACR) of 200 mg/g or higher. We explored the effects of 10 mg oral empagliflozin once daily versus placebo on the annualised rate of change in estimated glomerular filtration rate (eGFR slope), a tertiary outcome. We studied the acute slope (from randomisation to 2 months) and chronic slope (from 2 months onwards) separately, using shared parameter models to estimate the latter. Analyses were done in all randomly assigned participants by intention to treat. EMPA-KIDNEY is registered at ClinicalTrials.gov, NCT03594110. FINDINGS Between May 15, 2019, and April 16, 2021, 6609 participants were randomly assigned and then followed up for a median of 2·0 years (IQR 1·5-2·4). Prespecified subgroups of eGFR included 2282 (34·5%) participants with an eGFR of less than 30 mL/min per 1·73 m2, 2928 (44·3%) with an eGFR of 30 to less than 45 mL/min per 1·73 m2, and 1399 (21·2%) with an eGFR 45 mL/min per 1·73 m2 or higher. Prespecified subgroups of uACR included 1328 (20·1%) with a uACR of less than 30 mg/g, 1864 (28·2%) with a uACR of 30 to 300 mg/g, and 3417 (51·7%) with a uACR of more than 300 mg/g. Overall, allocation to empagliflozin caused an acute 2·12 mL/min per 1·73 m2 (95% CI 1·83-2·41) reduction in eGFR, equivalent to a 6% (5-6) dip in the first 2 months. After this, it halved the chronic slope from -2·75 to -1·37 mL/min per 1·73 m2 per year (relative difference 50%, 95% CI 42-58). The absolute and relative benefits of empagliflozin on the magnitude of the chronic slope varied significantly depending on diabetes status and baseline levels of eGFR and uACR. In particular, the absolute difference in chronic slopes was lower in patients with lower baseline uACR, but because this group progressed more slowly than those with higher uACR, this translated to a larger relative difference in chronic slopes in this group (86% [36-136] reduction in the chronic slope among those with baseline uACR <30 mg/g compared with a 29% [19-38] reduction for those with baseline uACR ≥2000 mg/g; ptrend<0·0001). INTERPRETATION Empagliflozin slowed the rate of progression of chronic kidney disease among all types of participant in the EMPA-KIDNEY trial, including those with little albuminuria. Albuminuria alone should not be used to determine whether to treat with an SGLT2 inhibitor. FUNDING Boehringer Ingelheim and Eli Lilly.
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T, Tamori Y, Tamura R, Tamura Y, Tan CHH, Tan EZZ, Tanabe A, Tanabe K, Tanaka A, Tanaka A, Tanaka N, Tang S, Tang Z, Tanigaki K, Tarlac M, Tatsuzawa A, Tay JF, Tay LL, Taylor J, Taylor K, Taylor K, Te A, Tenbusch L, Teng KS, Terakawa A, Terry J, Tham ZD, Tholl S, Thomas G, Thong KM, Tietjen D, Timadjer A, Tindall H, Tipper S, Tobin K, Toda N, Tokuyama A, Tolibas M, Tomita A, Tomita T, Tomlinson J, Tonks L, Topf J, Topping S, Torp A, Torres A, Totaro F, Toth P, Toyonaga Y, Tripodi F, Trivedi K, Tropman E, Tschope D, Tse J, Tsuji K, Tsunekawa S, Tsunoda R, Tucky B, Tufail S, Tuffaha A, Turan E, Turner H, Turner J, Turner M, Tuttle KR, Tye YL, Tyler A, Tyler J, Uchi H, Uchida H, Uchida T, Uchida T, Udagawa T, Ueda S, Ueda Y, Ueki K, Ugni S, Ugwu E, Umeno R, Unekawa C, Uozumi K, Urquia K, Valleteau A, Valletta C, van Erp R, Vanhoy C, Varad V, Varma R, Varughese A, Vasquez P, Vasseur A, Veelken R, Velagapudi C, Verdel K, Vettoretti S, Vezzoli G, Vielhauer V, Viera R, Vilar E, Villaruel S, 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Yamada N, Yamagata K, Yamaguchi M, Yamaji Y, Yamamoto A, Yamamoto S, Yamamoto S, Yamamoto T, Yamanaka A, Yamano T, Yamanouchi Y, Yamasaki N, Yamasaki Y, Yamasaki Y, Yamashita C, Yamauchi T, Yan Q, Yanagisawa E, Yang F, Yang L, Yano S, Yao S, Yao Y, Yarlagadda S, Yasuda Y, Yiu V, Yokoyama T, Yoshida S, Yoshidome E, Yoshikawa H, Young A, Young T, Yousif V, Yu H, Yu Y, Yuasa K, Yusof N, Zalunardo N, Zander B, Zani R, Zappulo F, Zayed M, Zemann B, Zettergren P, Zhang H, Zhang L, Zhang L, Zhang N, Zhang X, Zhao J, Zhao L, Zhao S, Zhao Z, Zhong H, Zhou N, Zhou S, Zhu D, Zhu L, Zhu S, Zietz M, Zippo M, Zirino F, Zulkipli FH. Impact of primary kidney disease on the effects of empagliflozin in patients with chronic kidney disease: secondary analyses of the EMPA-KIDNEY trial. Lancet Diabetes Endocrinol 2024; 12:51-60. [PMID: 38061372 DOI: 10.1016/s2213-8587(23)00322-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND The EMPA-KIDNEY trial showed that empagliflozin reduced the risk of the primary composite outcome of kidney disease progression or cardiovascular death in patients with chronic kidney disease mainly through slowing progression. We aimed to assess how effects of empagliflozin might differ by primary kidney disease across its broad population. METHODS EMPA-KIDNEY, a randomised, controlled, phase 3 trial, was conducted at 241 centres in eight countries (Canada, China, Germany, Italy, Japan, Malaysia, the UK, and the USA). Patients were eligible if their estimated glomerular filtration rate (eGFR) was 20 to less than 45 mL/min per 1·73 m2, or 45 to less than 90 mL/min per 1·73 m2 with a urinary albumin-to-creatinine ratio (uACR) of 200 mg/g or higher at screening. They were randomly assigned (1:1) to 10 mg oral empagliflozin once daily or matching placebo. Effects on kidney disease progression (defined as a sustained ≥40% eGFR decline from randomisation, end-stage kidney disease, a sustained eGFR below 10 mL/min per 1·73 m2, or death from kidney failure) were assessed using prespecified Cox models, and eGFR slope analyses used shared parameter models. Subgroup comparisons were performed by including relevant interaction terms in models. EMPA-KIDNEY is registered with ClinicalTrials.gov, NCT03594110. FINDINGS Between May 15, 2019, and April 16, 2021, 6609 participants were randomly assigned and followed up for a median of 2·0 years (IQR 1·5-2·4). Prespecified subgroupings by primary kidney disease included 2057 (31·1%) participants with diabetic kidney disease, 1669 (25·3%) with glomerular disease, 1445 (21·9%) with hypertensive or renovascular disease, and 1438 (21·8%) with other or unknown causes. Kidney disease progression occurred in 384 (11·6%) of 3304 patients in the empagliflozin group and 504 (15·2%) of 3305 patients in the placebo group (hazard ratio 0·71 [95% CI 0·62-0·81]), with no evidence that the relative effect size varied significantly by primary kidney disease (pheterogeneity=0·62). The between-group difference in chronic eGFR slopes (ie, from 2 months to final follow-up) was 1·37 mL/min per 1·73 m2 per year (95% CI 1·16-1·59), representing a 50% (42-58) reduction in the rate of chronic eGFR decline. This relative effect of empagliflozin on chronic eGFR slope was similar in analyses by different primary kidney diseases, including in explorations by type of glomerular disease and diabetes (p values for heterogeneity all >0·1). INTERPRETATION In a broad range of patients with chronic kidney disease at risk of progression, including a wide range of non-diabetic causes of chronic kidney disease, empagliflozin reduced risk of kidney disease progression. Relative effect sizes were broadly similar irrespective of the cause of primary kidney disease, suggesting that SGLT2 inhibitors should be part of a standard of care to minimise risk of kidney failure in chronic kidney disease. FUNDING Boehringer Ingelheim, Eli Lilly, and UK Medical Research Council.
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Jain V, Debnath S, Sharma A, Kamboj M, Mohanty A, Rawal S. Isolated lymph node recurrence in epithelial ovarian cancer - management and outcome. J Visc Surg 2022:S1878-7886(22)00173-4. [PMID: 36564260 DOI: 10.1016/j.jviscsurg.2022.11.002] [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] [Indexed: 12/24/2022]
Abstract
INTRODUCTION The aim of our study was to assess the clinical outcome of isolated lymph node recurrence in patients with epithelial ovarian cancer treated by surgery and to analyze the impact of various clinico-pathological factors on prognosis. MATERIAL AND METHODS We conducted a retrospective analysis of all the epithelial ovarian cancer patients who underwent secondary lymphadenectomy surgery for isolated lymph node recurrence at our institute from 2013 to 2020. Univariate analysis of various factors influencing the post-recurrence disease free survival and post-recurrence survival was done using Kaplan-Meier for categorical variables and cox-proportional hazard progression for continuous variables. RESULTS A total of 21 patients of isolated lymph node recurrence were treated surgically during the study period. The median disease free interval to develop lymph nodal recurrence was 13 months. All the patients achieved complete resection to no gross residual disease without any significant morbidity associated with the procedure. The median post-recurrence disease free survival after treatment of lymph node recurrence was 25 months with 3-year post-recurrence survival of 72% and 3-year overall survival of 85%. Amongst the factors influencing post-recurrence disease free survival, young age (< 50 years), para-aortic lymph node dissection at initial surgery and single site of lymph node recurrence were significantly associated with better prognosis. A single site of lymph node recurrence was associated with significantly better post-recurrence survival. CONCLUSIONS Complete resection is feasible for epithelial ovarian cancer patients presenting with isolated lymph node recurrence, without any significant perioperative morbidity. When combined with postoperative adjuvant chemotherapy, complete resection is associated with favourable survival outcomes. Young age, para-aortic lymph node dissection during primary surgery and single site of lymph node recurrence are associated with better prognosis.
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Affiliation(s)
- V Jain
- Department of Gynecologic Oncology, Rajiv-Gandhi Cancer Institute and research Centre, Delhi, India.
| | - S Debnath
- Department of Gynecologic Oncology, Rajiv-Gandhi Cancer Institute and research Centre, Delhi, India
| | - A Sharma
- Department of Histopathology, Rajiv Gandhi Cancer Institute and Research Centre, Delhi, India
| | - M Kamboj
- Department of Histopathology, Rajiv Gandhi Cancer Institute and Research Centre, Delhi, India
| | - A Mohanty
- Department of Research, Rajiv-Gandhi Cancer Institute and Research Centre, Delhi, India
| | - S Rawal
- Department of Gynecologic Oncology, Rajiv-Gandhi Cancer Institute and research Centre, Delhi, India
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Acherjya GK, Ali M, Roy GC, Rahman MS, Nuruzzaman M, Biswas R, Islam MN, Hoque MT, Tarafder K, Chakrabortty A, Kamal M, Kudrat-E-Khuda CM, Saha T, Debnath S, Zesmin F, Hossain MI, Deb SR, Bhuiyan GR, Paul GK, Azad AK. Psychological Assessment of Health-Care Workers Working during COVID-19 Pandemic Condition in Bangladesh. Mymensingh Med J 2022; 31:466-476. [PMID: 35383768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The study was aimed to assess the psychological aspects and relevant factors of the health-care workers (HCWs) working in COVID 19 pandemic condition in Bangladesh. This online cross-sectional survey was conducted from different tertiary, secondary and primary hospitals in Bangladesh. Eligible 638 HCWs who were directly involved in the caring of confirmed or suspected COVID-19 patients were recruited in this study. The mental health was assessed by the Patient Health Questionnare-9 (PHQ-9), Generalized Anxiety Disorder-7 (GAD-7) and Athens Insomnia Scale (AIS). High frequency of depression 536(84.0%), anxiety 386(60.5%) and insomnia 302(47.3%) was found among the HCWs, which were significantly higher in physicians (p<0.001) than nurses. Moderate to severe depression was significantly higher in female, whereas minimal to mild depression was significant in male HCWs (p=0.014). Symptoms of depression (p<0.001), anxiety (p<0.001) and insomnia (p=0.004) were significantly higher among the HCWs of primary and secondary compared to the tertiary level. The HCWs developed psychological trauma due to family health (45.3%) and contagious disease property (66.6%). After adjusting confounders, multivariable logistic regression analysis showed that physicians and HCWs of secondary hospital had significant symptoms of severe depression (OR=2.95, 95% CI=0.50-17.24; p<0.001), anxiety (OR=2.64, 95% CI=0.80-8.72; p<0.001) and insomnia (OR=2.67, 95% CI=1.23-5.84; p=0.018); whereas female HCWs had more risk of developing symptoms of severe insomnia (OR= 1.84; 95% CI=1.23-2.75; p=0.003). High rate of depression, anxiety and insomnia was found among HCWs working in the COVID-19 pandemic condition in this survey.
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Affiliation(s)
- G K Acherjya
- Dr Goutam Kumar Acherjya, Assistant Professor of Medicine, Jashore Medical College, Jashore, Bangladesh; E-mail:
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Pramanik A, Basak AK, Littlefair G, Debnath S, Prakash C, Singh MA, Marla D, Singh RK. Methods and variables in Electrical discharge machining of titanium alloy - A review. Heliyon 2020; 6:e05554. [PMID: 33344787 PMCID: PMC7736727 DOI: 10.1016/j.heliyon.2020.e05554] [Citation(s) in RCA: 6] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 07/02/2020] [Accepted: 11/16/2020] [Indexed: 11/16/2022] Open
Abstract
Titanium alloys are difficult to machine using conventional methods, therefore, nonconventional processes are often chosen in many applications. Electrical discharge machining (EDM) is one of those nonconventional processes that is used frequently for shaping titanium alloys with their respective pros and cons. However, a good understanding of this process is very difficult to achieve as research results are not properly connected and presented. Therefore, this study investigates different types of EDM processes such as, wire EDM, die-sink EDM, EDM drill and hybrid EDM used to machine titanium alloys. Machining mechanism, tool electrode, dielectric, materials removal rate (MRR), and surface integrity of all these processes are critically analysed and correlated based on the evidence accessible in literature. Machining process suffer from lower material removal rate and high tool wear while applied on titanium alloys. Formation of recast layer, heat affected zone and tool wear is common in all types of EDM processes. Additional challenge in wire EDM of titanium alloys is wire breakage under severe machining conditions. The formation of TiC and TiO2 are noticed in recast layer depending on the type of dielectrics. Removal of debris from small holes during EDM drilling is a challenge. All these restricts the applications EDMed titanium alloys in high-tech applications such as, aerospace and biomedical areas. Most of these challenges come up due to extraordinary properties such as, low thermal conductivity, high melting point and high hardness, of titanium alloys. Though hybrid EDM has been introduced and there is some work on simulation of EDM process, further developments in EDM of this alloy is required for widening the application of this methods.
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Affiliation(s)
- A Pramanik
- School of Civil and Mechanical Engineering, Curtin University, Bentley, WA, Australia
| | - A K Basak
- Adelaide Microscopy, The University of Adelaide, Adelaide, SA, Australia
| | - G Littlefair
- Faculty of Design and Creative Technologies, Auckland University of Technology, New Zealand
| | - S Debnath
- Department Mechanical Engineering, Curtin University Sarawak, Sarawak, Malaysia
| | - C Prakash
- School of Mechanical Engineering, Lovely Professional University, Phagwara, Punjab, India
| | | | - Deepak Marla
- Department of Mechanical Engineering, Indian Institute of Technology Bombay, India
| | - Ramesh Kumar Singh
- Department of Mechanical Engineering, Indian Institute of Technology Bombay, India
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Haldar P, Bhattacharjee S, Maity SG, Debnath S, Moitra S, Moitra S. Chronotype assessment of the Bengalese adolescents: an observational study using a Bengali version of the reduced Morningness-Eveningness Questionnaire (rMEQ). BIOL RHYTHM RES 2020. [DOI: 10.1080/09291016.2019.1571702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Prasun Haldar
- Department of Pneumology, Allergy & Asthma Research Centre, Kolkata, India
| | - Soumya Bhattacharjee
- Department of Chest Medicine, Murshidabad Medical College & Hospital, Berhampore, India
| | | | - Smriti Debnath
- Department of Pneumology, Allergy & Asthma Research Centre, Kolkata, India
| | - Saibal Moitra
- Department of Pneumology, Allergy & Asthma Research Centre, Kolkata, India
| | - Subhabrata Moitra
- ISGlobal, Barcelona, Spain
- Universitat Pompeu Fabra (UPF), Barcelona, Spain
- CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain
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Wolabu TW, Park JJ, Chen M, Cong L, Ge Y, Jiang Q, Debnath S, Li G, Wen J, Wang Z. Improving the genome editing efficiency of CRISPR/Cas9 in Arabidopsis and Medicago truncatula. Planta 2020; 252:15. [PMID: 32642859 PMCID: PMC7343739 DOI: 10.1007/s00425-020-03415-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 06/23/2020] [Indexed: 05/05/2023]
Abstract
MAIN CONCLUSION An improved CRISPR/Cas9 system with the Arabidopsis UBQ10 promoter-driven Cas9 exhibits consistently high mutation efficiency in Arabidopsis and M. truncatula. CRISPR/Cas9 is a powerful genome editing technology that has been applied in several crop species for trait improvement due to its simplicity, versatility, and specificity. However, the mutation efficiency of CRISPR/Cas9 in Arabidopsis and M. truncatula (Mt) is still challenging and inconsistent. To analyze the functionality of the CRISPR/Cas9 system in two model dicot species, four different promoter-driven Cas9 systems to target phytoene desaturase (PDS) genes were designed. Agrobacterium-mediated transformation was used for the delivery of constructed vectors to host plants. Phenotypic and genotypic analyses revealed that the Arabidopsis UBQ10 promoter-driven Cas9 significantly improves the mutation efficiency to 95% in Arabidopsis and 70% in M. truncatula. Moreover, the UBQ10-Cas9 system yielded 11% homozygous mutants in the T1 generation in Arabidopsis. Sequencing analyses of mutation events indicated that single-nucleotide insertions are the most frequent events in Arabidopsis, whereas multi-nucleotide deletions are dominant in bi-allelic and mono-allelic homozygous mutants in M. truncatula. Taken together, the UBQ10 promoter facilitates the best improvement in the CRISPR/Cas9 efficiency in PDS gene editing, followed by the EC1.2 promoter. Consistently, the improved UBQ10-Cas9 vector highly enhanced the mutation efficiency by four-fold over the commonly used 35S promoter in both dicot species.
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Affiliation(s)
- Tezera W Wolabu
- Noble Research Institute, LLC, 2510 Sam Noble Parkway, Ardmore, OK, 73401, USA
| | - Jong-Jin Park
- Noble Research Institute, LLC, 2510 Sam Noble Parkway, Ardmore, OK, 73401, USA
- Genome Editing Naturegenic Inc, 1281 Win Hentschel Boulevard, Kurz Purdue Technology Center Suite E-1251, West Lafayette, IN, 47906, USA
| | - Miao Chen
- Noble Research Institute, LLC, 2510 Sam Noble Parkway, Ardmore, OK, 73401, USA
- Guang Dong Ocean University, Faculty of Agricultural Science, #1 Haida Road, Mazhang, Zhanjiang, 524088, Guangdong, China
| | - Lili Cong
- Noble Research Institute, LLC, 2510 Sam Noble Parkway, Ardmore, OK, 73401, USA
- College of Grassland Science, Qingdao Agricultural University, Changcheng Road 700, Qingdao, Shandong Province, China
| | - Yaxin Ge
- Noble Research Institute, LLC, 2510 Sam Noble Parkway, Ardmore, OK, 73401, USA
| | - Qingzhen Jiang
- Noble Research Institute, LLC, 2510 Sam Noble Parkway, Ardmore, OK, 73401, USA
| | - Smriti Debnath
- Noble Research Institute, LLC, 2510 Sam Noble Parkway, Ardmore, OK, 73401, USA
| | - Guangming Li
- Noble Research Institute, LLC, 2510 Sam Noble Parkway, Ardmore, OK, 73401, USA
| | - Jiangqi Wen
- Noble Research Institute, LLC, 2510 Sam Noble Parkway, Ardmore, OK, 73401, USA.
| | - Zengyu Wang
- Noble Research Institute, LLC, 2510 Sam Noble Parkway, Ardmore, OK, 73401, USA.
- College of Grassland Science, Qingdao Agricultural University, Changcheng Road 700, Qingdao, Shandong Province, China.
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Haldar P, Carsin AE, Debnath S, Maity SG, Annesi-Maesano I, Garcia-Aymerich J, Bandyopadhayay A, Moitra S, Kogevinas M, Moitra S. Individual circadian preference (chronotype) is associated with asthma and allergic symptoms among adolescents. ERJ Open Res 2020; 6:00226-2020. [PMID: 32665950 PMCID: PMC7335840 DOI: 10.1183/23120541.00226-2020] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 05/17/2020] [Indexed: 01/08/2023] Open
Abstract
Circadian rhythm is an endogenously driven cyclical process that regulates most of our bodily functions, such as sleep–wakefulness cycle, metabolism, and a wide range of cellular, molecular and behavioural processes. Chronotype, or an individual's preferred time of sleep and activity, is one of the major internal cues that helps to harmonise one's biological events according to its circadian timing [1]. Three major variations of chronotype exist among humans, those who prefer to wake up early and sleep early at night (known as morning types or “larks”), those who prefer late sleep at night and late waking up in the morning (referred to as evening type or “owls”) and those who remain in between (intermediate type) [1]. Individual preference of sleep and activity (chronotype) might play an important role on asthma and allergic diseases in adolescents: this link underscores a potential plausible behavioural intervention for asthma and allergic diseases in young populationhttps://bit.ly/2THta9I
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Affiliation(s)
- Prasun Haldar
- Dept of Biological Sciences, Midnapore City College, Midnapore, India.,These authors contributed equally
| | - Anne-Elie Carsin
- ISGlobal, Barcelona, Spain.,Universitat Pompeu Fabra, Barcelona Spain.,CIBER Epidemiología y Salud Pública, Barcelona, Spain.,These authors contributed equally
| | - Smriti Debnath
- Dept of Pneumology, Allergy and Asthma Research Centre, Kolkata, India
| | | | | | - Judith Garcia-Aymerich
- ISGlobal, Barcelona, Spain.,Universitat Pompeu Fabra, Barcelona Spain.,CIBER Epidemiología y Salud Pública, Barcelona, Spain
| | | | - Saibal Moitra
- Dept of Pneumology, Allergy and Asthma Research Centre, Kolkata, India.,Dept of Allergy and Immunology, Apollo Gleneagles Hospitals, Kolkata, India
| | - Manolis Kogevinas
- ISGlobal, Barcelona, Spain.,Universitat Pompeu Fabra, Barcelona Spain.,CIBER Epidemiología y Salud Pública, Barcelona, Spain
| | - Subhabrata Moitra
- ISGlobal, Barcelona, Spain.,Universitat Pompeu Fabra, Barcelona Spain.,CIBER Epidemiología y Salud Pública, Barcelona, Spain
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Juvvi P, Debnath S. Enzyme-assisted three-phase partitioning: An efficient alternative for oil extraction from Sesame (<em>Sesamum indicum</em> L.). Grasas y Aceites 2020. [DOI: 10.3989/gya.1060182] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Three-phase partitioning (TPP) was explored for oil extraction from Sesamum indicum L. seeds. The process parameters, namely the salt concentration, slurry/t-butanol ratio and system pH were standardized. The optimum conditions for maximum oil recovery using TPP were an ammonium sulphate concentration of 40% (w/v), slurry/t-butanol ratio of 1:1 (v/v) and system pH of 5.0. The powdered seeds were subjected to enzyme-assisted three-phase partitioning (EATPP) which was pre-treated with pectinase, protease and a mixture of ɑ-amylase and amylo-glucosidase (1:1 ratio) followed by TPP (as standardized conditions) and its efficacy in recovering oil was compared with TPP and solvent extraction (SE). Out of all the enzymes studied, EATPP with pectinase resulted in the highest oil recovery (86.12%), which was higher than that of TPP (78.24%). The free fatty acids, saponification value and peroxide values were observed to be lower in the case of TPP and EATPP when compared to SE, indicating better oil quality.
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Wright K, Beck KM, Debnath S, Amini JM, Nam Y, Grzesiak N, Chen JS, Pisenti NC, Chmielewski M, Collins C, Hudek KM, Mizrahi J, Wong-Campos JD, Allen S, Apisdorf J, Solomon P, Williams M, Ducore AM, Blinov A, Kreikemeier SM, Chaplin V, Keesan M, Monroe C, Kim J. Benchmarking an 11-qubit quantum computer. Nat Commun 2019; 10:5464. [PMID: 31784527 PMCID: PMC6884641 DOI: 10.1038/s41467-019-13534-2] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [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: 06/05/2019] [Accepted: 11/13/2019] [Indexed: 11/23/2022] Open
Abstract
The field of quantum computing has grown from concept to demonstration devices over the past 20 years. Universal quantum computing offers efficiency in approaching problems of scientific and commercial interest, such as factoring large numbers, searching databases, simulating intractable models from quantum physics, and optimizing complex cost functions. Here, we present an 11-qubit fully-connected, programmable quantum computer in a trapped ion system composed of 13 171Yb+ ions. We demonstrate average single-qubit gate fidelities of 99.5\documentclass[12pt]{minimal}
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\begin{document}$$\%$$\end{document}%, average two-qubit-gate fidelities of 97.5\documentclass[12pt]{minimal}
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\begin{document}$$\%$$\end{document}%, respectively. These algorithms serve as excellent benchmarks for any type of quantum hardware, and show that our system outperforms all other currently available hardware. The growing complexity of quantum computing devices makes presents challenges for benchmarking their performance as previous, exhaustive approaches become infeasible. Here the authors characterise the quality of their 11-qubit device by successfully computing two quantum algorithms.
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Affiliation(s)
- K Wright
- IonQ, Inc., College Park, MD, 20740, USA.
| | - K M Beck
- IonQ, Inc., College Park, MD, 20740, USA
| | - S Debnath
- IonQ, Inc., College Park, MD, 20740, USA
| | - J M Amini
- IonQ, Inc., College Park, MD, 20740, USA
| | - Y Nam
- IonQ, Inc., College Park, MD, 20740, USA
| | - N Grzesiak
- IonQ, Inc., College Park, MD, 20740, USA
| | - J-S Chen
- IonQ, Inc., College Park, MD, 20740, USA
| | | | - M Chmielewski
- IonQ, Inc., College Park, MD, 20740, USA.,Joint Quantum Institute and Department of Physics, University of Maryland, College Park, MD, 20742, USA
| | - C Collins
- IonQ, Inc., College Park, MD, 20740, USA
| | - K M Hudek
- IonQ, Inc., College Park, MD, 20740, USA
| | - J Mizrahi
- IonQ, Inc., College Park, MD, 20740, USA
| | | | - S Allen
- IonQ, Inc., College Park, MD, 20740, USA
| | - J Apisdorf
- IonQ, Inc., College Park, MD, 20740, USA
| | - P Solomon
- IonQ, Inc., College Park, MD, 20740, USA
| | - M Williams
- IonQ, Inc., College Park, MD, 20740, USA
| | - A M Ducore
- IonQ, Inc., College Park, MD, 20740, USA
| | - A Blinov
- IonQ, Inc., College Park, MD, 20740, USA
| | | | - V Chaplin
- IonQ, Inc., College Park, MD, 20740, USA
| | - M Keesan
- IonQ, Inc., College Park, MD, 20740, USA
| | - C Monroe
- IonQ, Inc., College Park, MD, 20740, USA.,Joint Quantum Institute and Department of Physics, University of Maryland, College Park, MD, 20742, USA
| | - J Kim
- IonQ, Inc., College Park, MD, 20740, USA.,Department of Electrical and Computer Engineering, Duke University, Durham, NC, 27708, USA
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13
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Haldar P, Debnath S, Maity SG, Mitra R, Biswas M, Bhattacharjee S, Saha S, Das A, Sengupta S, Annesi-Maesano I, Garcia-Aymerich J, Ghosh A, Bandyopadhyay A, Chattopadhyay D, Moitra S, Moitra S. Association between asthma and allergic diseases and circadian preference (chronotype) of the adolescents. Epidemiology 2019. [DOI: 10.1183/13993003.congress-2019.pa2783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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14
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Debnath S, Haldar P, Maity SG, Mitra R, Biswas M, Bhattacharjee S, Saha S, Das A, Sengupta S, Annesi-Maesano I, Garcia-Aymerich J, Ghosh A, Bandyopadhyay A, Chattopadhyay D, Moitra S, Moitra S. Environmental factors in asthma and allergic diseases among the Indian adolescents: PERFORMANCE study results. Epidemiology 2019. [DOI: 10.1183/13993003.congress-2019.pa4409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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15
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Das A, Debnath S, Haldar P, Mitra R, Sengupta S, Ghosh A, Akgün M, Murgia N, Moitra S, Moitra S. Association between neighbourhood environment and asthma quality of life: Results of the EQUIPROBE-Asthma study. Epidemiology 2019. [DOI: 10.1183/13993003.congress-2019.pa5065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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16
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Gou J, Tang C, Chen N, Wang H, Debnath S, Sun L, Flanagan A, Tang Y, Jiang Q, Allen RD, Wang ZY. SPL7 and SPL8 represent a novel flowering regulation mechanism in switchgrass. New Phytol 2019; 222:1610-1623. [PMID: 30688366 DOI: 10.1111/nph.15712] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Accepted: 01/11/2019] [Indexed: 05/20/2023]
Abstract
The aging pathway in flowering regulation is controlled mainly by microRNA156 (miR156). Studies in Arabidopsis thaliana reveal that nine miR156-targeted SQUAMOSA PROMOTER BINDING-LIKE (SPL) genes are involved in the control of flowering. However, the roles of SPLs in flowering remain elusive in grasses. Inflorescence development in switchgrass was characterized using scanning electron microscopy (SEM). Microarray, quantitative reverse transcription polymerase chain reaction (qRT-PCR), chromatin immunoprecipitation (ChIP)-PCR and EMSA were used to identify regulators of phase transition and flowering. Gene function was characterized by downregulation and overexpression of the target genes. Overexpression of SPL7 and SPL8 promotes flowering, whereas downregulation of individual genes moderately delays flowering. Simultaneous downregulation of SPL7/SPL8 results in extremely delayed or nonflowering plants. Furthermore, downregulation of both genes leads to a vegetative-to-reproductive reversion in the inflorescence, a phenomenon that has not been reported in any other grasses. Detailed analyses demonstrate that SPL7 and SPL8 induce phase transition and flowering in grasses by directly upregulating SEPALLATA3 (SEP3) and MADS32. Thus, the SPL7/8 pathway represents a novel regulatory mechanism in grasses that is largely different from that in Arabidopsis. Additionally, genetic modification of SPL7 and SPL8 results in much taller plants with significantly increased biomass yield and sugar release.
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Affiliation(s)
- Jiqing Gou
- Noble Research Institute, Ardmore, OK, 73401, USA
- BioEnergy Science Center (BESC), Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Chaorong Tang
- Noble Research Institute, Ardmore, OK, 73401, USA
- Hainan University, Haiko, 570228, China
| | - Naichong Chen
- Institute for Agricultural Biosciences, Oklahoma State University, Ardmore, OK, 73401, USA
| | - Hui Wang
- Institute for Agricultural Biosciences, Oklahoma State University, Ardmore, OK, 73401, USA
| | - Smriti Debnath
- Noble Research Institute, Ardmore, OK, 73401, USA
- BioEnergy Science Center (BESC), Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Liang Sun
- Noble Research Institute, Ardmore, OK, 73401, USA
| | - Amy Flanagan
- Noble Research Institute, Ardmore, OK, 73401, USA
- BioEnergy Science Center (BESC), Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Yuhong Tang
- Noble Research Institute, Ardmore, OK, 73401, USA
- BioEnergy Science Center (BESC), Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | | | - Randy D Allen
- Institute for Agricultural Biosciences, Oklahoma State University, Ardmore, OK, 73401, USA
| | - Zeng-Yu Wang
- Noble Research Institute, Ardmore, OK, 73401, USA
- BioEnergy Science Center (BESC), Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
- Grassland Agri-Husbandry Research Center, Qingdao Agricultural University, Qingdao, 266109, China
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17
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Moitra S, Haldar P, Maity SG, Bhattacharjee S, Debnath S, Saha S, Mitra R, Annesi-Maesano I, Garcia-Aymerich J, Moitra S. Prevalence of asthma and allergy-related diseases among adolescents of West Bengal, India: Results of the PERFORMANCE study. Epidemiology 2018. [DOI: 10.1183/13993003.congress-2018.pa1160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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18
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Bhattacharjee S, Haldar P, Gopal Maity S, Debnath S, Moitra S, Saha S, Mitra R, Annesi-Maesano I, Garcia-Aymerich J, Moitra S. Prevalence and Risk Factors of Asthma and Allergy-Related Diseases among Adolescents (PERFORMANCE) study: rationale and methods. ERJ Open Res 2018; 4:00034-2018. [PMID: 29977901 PMCID: PMC6019742 DOI: 10.1183/23120541.00034-2018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 05/15/2018] [Indexed: 01/14/2023] Open
Abstract
Despite a considerable number of international reports on allergic diseases among children, information about the prevalence and risk factors of asthma and allergy-related diseases among Indian adolescents is relatively sparse. The Prevalence and Risk Factors of Asthma and Allergy-Related Diseases among Adolescents (PERFORMANCE) study has been conceived to study the aetiology of asthma and allergic diseases including rhinoconjunctivitis, atopic eczema and food allergies among adolescents in West Bengal, India, using standardised methods and collaborations. The aims of the study are: 1) to estimate the prevalence and risk factors of asthma and allergic diseases among the adolescents residing in rural, suburban and urban areas of West Bengal; 2) to obtain information about the possible role of lifestyle factors (smoking, diet and physical activity) on the disease prevalence; and 3) to create a network for further investigation on social, environmental and genetic factors affecting the diseases. The PERFORMANCE study comprises two phases. The phase I study will investigate the prevalence and possible contributing factors of asthma and allergic diseases in a defined population. The phase II study will be performed as a follow-up of phase I to assess the incidence of asthma and allergic diseases. The PERFORMANCE study: investigating the prevalence and risk factors of allergy and asthma among Indian adolescentshttp://ow.ly/jP2v30kmt8u
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Affiliation(s)
- Soumya Bhattacharjee
- Dept of Chest Medicine, Murshidabad Medical College and Hospital, Berhampore, India.,These authors contributed equally
| | - Prasun Haldar
- Dept of Pneumology, Allergy and Asthma Research Centre, Kolkata, India.,These authors contributed equally
| | | | - Smriti Debnath
- Dept of Pneumology, Allergy and Asthma Research Centre, Kolkata, India
| | - Saibal Moitra
- Dept of Pneumology, Allergy and Asthma Research Centre, Kolkata, India
| | - Sujoy Saha
- Dept of Pediatrics, B.R. Singh Hospital (Eastern Railways), Kolkata, India
| | - Ritabrata Mitra
- Dept of Pulmonary Medicine, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | | | - Judith Garcia-Aymerich
- ISGlobal, Barcelona, Spain.,University of Pompeu Fabra, Barcelona, Spain.,CIBER Epidemiologia y Salud Pública, Barcelona, Spain
| | - Subhabrata Moitra
- Dept of Pneumology, Allergy and Asthma Research Centre, Kolkata, India.,ISGlobal, Barcelona, Spain
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Gou J, Debnath S, Sun L, Flanagan A, Tang Y, Jiang Q, Wen J, Wang Z. From model to crop: functional characterization of SPL8 in M. truncatula led to genetic improvement of biomass yield and abiotic stress tolerance in alfalfa. Plant Biotechnol J 2018; 16:951-962. [PMID: 28941083 PMCID: PMC5866946 DOI: 10.1111/pbi.12841] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 09/01/2017] [Accepted: 09/07/2017] [Indexed: 05/05/2023]
Abstract
Biomass yield, salt tolerance and drought tolerance are important targets for alfalfa (Medicago sativa L.) improvement. Medicago truncatula has been developed into a model plant for alfalfa and other legumes. By screening a Tnt1 retrotransposon-tagged M. truncatula mutant population, we identified three mutants with enhanced branching. Branch development determines shoot architecture which affects important plant functions such as light acquisition, resource use and ultimately impacts biomass production. Molecular analyses revealed that the mutations were caused by Tnt1 insertions in the SQUAMOSA PROMOTER BINDING PROTEIN-LIKE 8 (SPL8) gene. The M. truncatula spl8 mutants had increased biomass yield, while overexpression of SPL8 in M. truncatula suppressed branching and reduced biomass yield. Scanning electron microscopy (SEM) analysis showed that SPL8 inhibited branching by directly suppressing axillary bud formation. Based on the M. truncatula SPL8 sequence, alfalfa SPL8 (MsSPL8) was cloned and transgenic alfalfa plants were produced. MsSPL8 down-regulated or up-regulated alfalfa plants exhibited similar phenotypes to the M. truncatula mutants or overexpression lines, respectively. Specifically, the MsSPL8 down-regulated alfalfa plants showed up to 43% increase in biomass yield in the first harvest. The impact was even more prominent in the second harvest, with up to 86% increase in biomass production compared to the control. Furthermore, down-regulation of MsSPL8 led to enhanced salt and drought tolerance in transgenic alfalfa. Results from this research offer a valuable approach to simultaneously improve biomass production and abiotic stress tolerance in legumes.
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Affiliation(s)
- Jiqing Gou
- Noble Research InstituteArdmoreOKUSA
- BioEnergy Science Center (BESC)Oak Ridge National LaboratoryOak RidgeTNUSA
| | | | - Liang Sun
- Noble Research InstituteArdmoreOKUSA
| | - Amy Flanagan
- Noble Research InstituteArdmoreOKUSA
- BioEnergy Science Center (BESC)Oak Ridge National LaboratoryOak RidgeTNUSA
| | - Yuhong Tang
- Noble Research InstituteArdmoreOKUSA
- BioEnergy Science Center (BESC)Oak Ridge National LaboratoryOak RidgeTNUSA
| | | | | | - Zeng‐Yu Wang
- Noble Research InstituteArdmoreOKUSA
- BioEnergy Science Center (BESC)Oak Ridge National LaboratoryOak RidgeTNUSA
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20
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Gou J, Fu C, Liu S, Tang C, Debnath S, Flanagan A, Ge Y, Tang Y, Jiang Q, Larson PR, Wen J, Wang ZY. The miR156-SPL4 module predominantly regulates aerial axillary bud formation and controls shoot architecture. New Phytol 2017; 216:829-840. [PMID: 28877340 DOI: 10.1111/nph.14758] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 07/23/2017] [Indexed: 05/06/2023]
Abstract
Grasses possess basal and aerial axillary buds. Previous studies have largely focused on basal bud (tiller) formation but scarcely touched on aerial buds, which may lead to aerial branch development. Genotypes with and without aerial buds were identified in switchgrass (Panicum virgatum), a dedicated bioenergy crop. Bud development was characterized using scanning electron microscopy. Microarray, RNA-seq and quantitative reverse transcription polymerase chain reaction (RT-qPCR) were used to identify regulators of bud formation. Gene function was characterized by down-regulation and overexpression. Overexpression of miR156 induced aerial bud formation in switchgrass. Various analyses revealed that SQUAMOSA PROMOTER BINDING PROTEIN LIKE4 (SPL4), one of the miR156 targets, directly regulated aerial axillary bud initiation. Down-regulation of SPL4 promoted aerial bud formation and increased basal buds, while overexpression of SPL4 seriously suppressed bud formation and tillering. RNA-seq and RT-qPCR identified potential downstream genes of SPL4. Unlike all previously reported genes acting as activators of basal bud initiation, SPL4 acts as a suppressor for the formation of both aerial and basal buds. The miR156-SPL4 module predominantly regulates aerial bud initiation and partially controls basal bud formation. Genetic manipulation of SPL4 led to altered plant architecture with increased branching, enhanced regrowth after cutting and improved biomass yield.
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Affiliation(s)
- Jiqing Gou
- Forage Improvement Division, The Samuel Roberts Noble Foundation, 2510 Sam Noble Parkway, Ardmore, OK, 73401, USA
- BioEnergy Science Center (BESC), Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Chunxiang Fu
- Forage Improvement Division, The Samuel Roberts Noble Foundation, 2510 Sam Noble Parkway, Ardmore, OK, 73401, USA
- Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong, 266101, China
| | - Sijia Liu
- Forage Improvement Division, The Samuel Roberts Noble Foundation, 2510 Sam Noble Parkway, Ardmore, OK, 73401, USA
- Department of Grassland Science, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Chaorong Tang
- Forage Improvement Division, The Samuel Roberts Noble Foundation, 2510 Sam Noble Parkway, Ardmore, OK, 73401, USA
- Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou, Hainan, 571737, China
| | - Smriti Debnath
- Forage Improvement Division, The Samuel Roberts Noble Foundation, 2510 Sam Noble Parkway, Ardmore, OK, 73401, USA
| | - Amy Flanagan
- Forage Improvement Division, The Samuel Roberts Noble Foundation, 2510 Sam Noble Parkway, Ardmore, OK, 73401, USA
- BioEnergy Science Center (BESC), Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Yaxin Ge
- Forage Improvement Division, The Samuel Roberts Noble Foundation, 2510 Sam Noble Parkway, Ardmore, OK, 73401, USA
| | - Yuhong Tang
- BioEnergy Science Center (BESC), Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
- Plant Biology Division, The Samuel Roberts Noble Foundation, 2510 Sam Noble Parkway, Ardmore, OK, 73401, USA
| | - Qingzhen Jiang
- Plant Biology Division, The Samuel Roberts Noble Foundation, 2510 Sam Noble Parkway, Ardmore, OK, 73401, USA
| | - Preston R Larson
- Samuel Roberts Noble Microscopy Laboratory, University of Oklahoma, Norman, OK, 73019, USA
| | - Jiangqi Wen
- Plant Biology Division, The Samuel Roberts Noble Foundation, 2510 Sam Noble Parkway, Ardmore, OK, 73401, USA
| | - Zeng-Yu Wang
- Forage Improvement Division, The Samuel Roberts Noble Foundation, 2510 Sam Noble Parkway, Ardmore, OK, 73401, USA
- BioEnergy Science Center (BESC), Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
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21
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Moitra S, Thapa P, Das P, Das J, Debnath S, Singh M, Datta A, Sen S, Moitra S. Respiratory Morbidity among Indian Tea Industry Workers. Int J Occup Environ Med 2017; 7:148-55. [PMID: 27393321 PMCID: PMC6818078 DOI: 10.15171/ijoem.2016.761] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 05/29/2016] [Indexed: 11/22/2022]
Abstract
Background: Indian tea industry workers are exposed to various exposures at their workplace. Objective: To investigate the respiratory health of Indian tea industry workers. Methods: We administered a respiratory questionnaire to and measured lung function in workers of 34 tea gardens and 46 tea factories. We used correlation matrices to test the association between their respiratory symptoms and lung functions. Results: The garden workers complained of shortness of breath 3 times higher than the factory workers. However, nasal allergy was more predominant among the factory workers compared to garden workers (69.6% vs 41.2%, p=0.02). The factory workers had higher total (median 107.3% vs 92.9%, p=0.05, as measured by R at 5 Hz) and peripheral airway resistance (143.8% vs 61.1%, p=0.005, as measured by R at 5–20 Hz) than the garden workers. Respiratory symptoms were inversely associated with airway obstruction as measured by the ratio between forced expiratory volume in 1 second (FEV1) and forced vital capacity (FVC) and positively correlated with increased overall airway reactance among the workers. Conclusion: Respiratory symptoms and increased allergen susceptibility of Indian tea industry workers due to occupational exposures warrant routine systematic surveillance of their workplace air quality and health monitoring.
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Affiliation(s)
- S Moitra
- Department of Pneumology, Allergy and Asthma Research Centre, Kolkata, India.
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22
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Park JJ, Yoo CG, Flanagan A, Pu Y, Debnath S, Ge Y, Ragauskas AJ, Wang ZY. Defined tetra-allelic gene disruption of the 4-coumarate:coenzyme A ligase 1 (Pv4CL1) gene by CRISPR/Cas9 in switchgrass results in lignin reduction and improved sugar release. Biotechnol Biofuels 2017; 10:284. [PMID: 29213323 PMCID: PMC5708096 DOI: 10.1186/s13068-017-0972-0] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 11/18/2017] [Indexed: 05/02/2023]
Abstract
BACKGROUND The development of genome editing technologies offers new prospects in improving bioenergy crops like switchgrass (Panicum virgatum). Switchgrass is an outcrossing species with an allotetraploid genome (2n = 4x = 36), a complexity which forms an impediment to generating homozygous knock-out plants. Lignin, a major component of the plant cell wall and a contributor to cellulosic feedstock's recalcitrance to decomposition, stands as a barrier to efficient biofuel production by limiting enzyme access to cell wall polymers during the fermentation process. RESULTS We developed a CRISPR/Cas9 genome editing system in switchgrass to target a key enzyme involved in the early steps of monolignol biosynthesis, 4-Coumarate:coenzyme A ligase (4CL). Three 4CL genes, Pv4CL1, Pv4CL2, and Pv4CL3, were identified in switchgrass. Expression analysis revealed that Pv4CL1 transcripts were more abundant in the stem than in the leaf, while Pv4CL2 transcripts were barely detectable and Pv4CL3 was mainly expressed in the leaf. Pv4CL1 was selected as the target for CRISPR/Cas9 editing because of its preferential expression in highly lignified stem tissues. Specific guide RNA was constructed to target Pv4CL1. After introducing the construct into switchgrass calli, 39 transgenic plants were regenerated. Using two rounds of PCR screening and sequencing, four plants were confirmed to have tetra-allelic mutations simultaneously. The Pv4CL1 knock-out plants had reduced cell wall thickness, an 8-30% reduction in total lignin content, a 7-11% increase in glucose release, and a 23-32% increase in xylose release. CONCLUSION This study established a successful CRISPR/Cas9 system in switchgrass with mutation efficiency reaching 10%. The system allows the precise targeting of the selected Pv4CL1 gene to create switchgrass knock-out mutant plants with decreased lignin content and reduced recalcitrance.
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Affiliation(s)
- Jong-Jin Park
- Noble Research Institute, Ardmore, OK 73401 USA
- BioEnergy Science Center, Oak Ridge National Laboratory, Oak Ridge, TN 37831 USA
| | - Chang Geun Yoo
- BioEnergy Science Center, Oak Ridge National Laboratory, Oak Ridge, TN 37831 USA
- Joint Institute for Biological Sciences, Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830 USA
| | - Amy Flanagan
- Noble Research Institute, Ardmore, OK 73401 USA
- BioEnergy Science Center, Oak Ridge National Laboratory, Oak Ridge, TN 37831 USA
| | - Yunqiao Pu
- BioEnergy Science Center, Oak Ridge National Laboratory, Oak Ridge, TN 37831 USA
- Joint Institute for Biological Sciences, Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830 USA
| | | | - Yaxin Ge
- Noble Research Institute, Ardmore, OK 73401 USA
| | - Arthur J. Ragauskas
- BioEnergy Science Center, Oak Ridge National Laboratory, Oak Ridge, TN 37831 USA
- Joint Institute for Biological Sciences, Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830 USA
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996 USA
- Center for Renewable Carbon, Department of Forestry, Wildlife, and Fisheries, University of Tennessee Institute of Agriculture, Knoxville, TN 37996 USA
| | - Zeng-Yu Wang
- Noble Research Institute, Ardmore, OK 73401 USA
- BioEnergy Science Center, Oak Ridge National Laboratory, Oak Ridge, TN 37831 USA
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23
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Alam SK, Yadav VK, Bajaj S, Datta A, Dutta SK, Bhattacharyya M, Bhattacharya S, Debnath S, Roy S, Boardman LA, Smyrk TC, Molina JR, Chakrabarti S, Chowdhury S, Mukhopadhyay D, Roychoudhury S. DNA damage-induced ephrin-B2 reverse signaling promotes chemoresistance and drives EMT in colorectal carcinoma harboring mutant p53. Cell Death Differ 2015; 23:707-22. [PMID: 26494468 DOI: 10.1038/cdd.2015.133] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2015] [Revised: 07/31/2015] [Accepted: 08/25/2015] [Indexed: 01/13/2023] Open
Abstract
Mutation in the TP53 gene positively correlates with increased incidence of chemoresistance in different cancers. In this study, we investigated the mechanism of chemoresistance and epithelial-to-mesenchymal transition (EMT) in colorectal cancer involving the gain-of-function (GOF) mutant p53/ephrin-B2 signaling axis. Bioinformatic analysis of the NCI-60 data set and subsequent hub prediction identified EFNB2 as a possible GOF mutant p53 target gene, responsible for chemoresistance. We show that the mutant p53-NF-Y complex transcriptionally upregulates EFNB2 expression in response to DNA damage. Moreover, the acetylated form of mutant p53 protein is recruited on the EFNB2 promoter and positively regulates its expression in conjunction with coactivator p300. In vitro cell line and in vivo nude mice data show that EFNB2 silencing restores chemosensitivity in mutant p53-harboring tumors. In addition, we observed high expression of EFNB2 in patients having neoadjuvant non-responder colorectal carcinoma compared with those having responder version of the disease. In the course of deciphering the drug resistance mechanism, we also show that ephrin-B2 reverse signaling induces ABCG2 expression after drug treatment that involves JNK-c-Jun signaling in mutant p53 cells. Moreover, 5-fluorouracil-induced ephrin-B2 reverse signaling promotes tumorigenesis through the Src-ERK pathway, and drives EMT via the Src-FAK pathway. We thus conclude that targeting ephrin-B2 might enhance the therapeutic potential of DNA-damaging chemotherapeutic agents in mutant p53-bearing human tumors.
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Affiliation(s)
- S K Alam
- Cancer Biology and Inflammatory Disorder Division, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| | - V K Yadav
- G.N.R. Knowledge Centre for Genome Informatics, Proteomics and Structural Biology Unit, CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi, India
| | - S Bajaj
- Advanced Molecular Diagnostics Laboratory, Princess Margaret Hospital/The Ontario Cancer Institute, Toronto, ON, Canada
| | - A Datta
- Cancer Biology and Inflammatory Disorder Division, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| | - S K Dutta
- Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - M Bhattacharyya
- Structural Biology and Bioinformatics Division, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| | - S Bhattacharya
- Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - S Debnath
- Structural Biology and Bioinformatics Division, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| | - S Roy
- Structural Biology and Bioinformatics Division, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| | - L A Boardman
- Division of Gastroenterology and Hepatology, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - T C Smyrk
- Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - J R Molina
- Division of Medical Oncology, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - S Chakrabarti
- Structural Biology and Bioinformatics Division, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| | - S Chowdhury
- G.N.R. Knowledge Centre for Genome Informatics, Proteomics and Structural Biology Unit, CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi, India.,Structural Biology Unit, CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi, India
| | - D Mukhopadhyay
- Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - S Roychoudhury
- Cancer Biology and Inflammatory Disorder Division, CSIR-Indian Institute of Chemical Biology, Kolkata, India
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Debnath S, Adhyapok A, Vatsyayan A. Pattern of maxillofacial fractures among population in Assam, India. Int J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.ijom.2015.08.521] [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: 11/26/2022]
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25
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Jaako P, Debnath S, Olsson K, Zhang Y, Flygare J, Lindström MS, Bryder D, Karlsson S. Disruption of the 5S RNP-Mdm2 interaction significantly improves the erythroid defect in a mouse model for Diamond-Blackfan anemia. Leukemia 2015; 29:2221-9. [PMID: 25987256 DOI: 10.1038/leu.2015.128] [Citation(s) in RCA: 27] [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] [Received: 03/09/2015] [Revised: 04/10/2015] [Accepted: 05/06/2015] [Indexed: 02/07/2023]
Abstract
Diamond-Blackfan anemia (DBA) is a congenital erythroid hypoplasia caused by haploinsufficiency of genes encoding ribosomal proteins (RPs). Perturbed ribosome biogenesis in DBA has been shown to induce a p53-mediated ribosomal stress response. However, the mechanisms of p53 activation and its relevance for the erythroid defect remain elusive. Previous studies have indicated that activation of p53 is caused by the inhibition of mouse double minute 2 (Mdm2), the main negative regulator of p53, by the 5S ribonucleoprotein particle (RNP). Meanwhile, it is not clear whether this mechanism solely mediates the p53-dependent component found in DBA. To approach this question, we crossed our mouse model for RPS19-deficient DBA with Mdm2(C305F) knock-in mice that have a disrupted 5S RNP-Mdm2 interaction. Upon induction of the Rps19 deficiency, Mdm2(C305F) reversed the p53 response and improved expansion of hematopoietic progenitors in vitro, and ameliorated the anemia in vivo. Unexpectedly, disruption of the 5S RNP-Mdm2 interaction also led to selective defect in erythropoiesis. Our findings highlight the sensitivity of erythroid progenitor cells to aberrations in p53 homeostasis mediated by the 5S RNP-Mdm2 interaction. Finally, we provide evidence indicating that physiological activation of the 5S RNP-Mdm2-p53 pathway may contribute to functional decline of the hematopoietic system in a cell-autonomous manner over time.
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Affiliation(s)
- P Jaako
- Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University, Lund, Sweden.,Molecular Hematology, Lund Stem Cell Center, Lund University, Lund, Sweden
| | - S Debnath
- Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University, Lund, Sweden
| | - K Olsson
- Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University, Lund, Sweden
| | - Y Zhang
- Department of Radiation Oncology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - J Flygare
- Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University, Lund, Sweden
| | - M S Lindström
- Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden
| | - D Bryder
- Molecular Hematology, Lund Stem Cell Center, Lund University, Lund, Sweden
| | - S Karlsson
- Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University, Lund, Sweden
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Islam MM, Kizaki K, Takahashi T, Khanom JS, Debnath S, Khandoker MAMY. Pregnancy diagnosis in Black Bengal goat by progesterone assay. ACTA ACUST UNITED AC 2014. [DOI: 10.3329/bjas.v43i3.21645] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Pregnancy is the main event in the life of a female mammal to reproduce the progeny and maintain the descents of the species. Progesterone level in the plasma is one of the indications of stages of pregnancy of an individual and the present study was undertaken to determine the progesterone level in different stages of pregnant Black Bengal does and to correlate blood progesterone level with stages of pregnancy in Black Bengal does. For this experiment the blood samples were collected from different stages of pregnant and non-pregnant Black Bengal does, kids and bucks, and subjected to use for further study. The progesterone level was measured at 3 different stages of pregnancy (25-30 days, 60- 70 days, and 90-92 days) using the test kit (EIA TEST KIT Progesterone, Biocheck, Inc. Foster city, CA 94404 USA). Progesterone was also assayed in different ages of non-pregnant does, kids and bucks blood as the control. The logarithmic graph paper was used to calculate the progesterone level. The progesterone levels were found 1.5 ng/ml, 6.6-9.3 ng/ml and 14-15.5 ng/ml in 25-30 days, 60-70 days and 90-92 days of pregnancy, respectively. In case of non-pregnant does the progesterone level varied from 0.19-6.6 ng/ml in different ages. Whereas the progesterone level was found between <0.1 ng/ml and 4.4 ng/ml in kids blood samples and in case of bucks the progesterone level was <0.1 ng/ml. So, it is clear that the progesterone level simultaneously increased as the stages of pregnancy advanced in the blood of pregnant Black Bengal does.DOI: http://dx.doi.org/10.3329/bjas.v43i3.21645 Bang. J. Anim. Sci. 2014. 43 (3): 180-184
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Islam R, Campbell WC, Choi T, Clark SM, Conover CWS, Debnath S, Edwards EE, Fields B, Hayes D, Hucul D, Inlek IV, Johnson KG, Korenblit S, Lee A, Lee KW, Manning TA, Matsukevich DN, Mizrahi J, Quraishi Q, Senko C, Smith J, Monroe C. Beat note stabilization of mode-locked lasers for quantum information processing. Opt Lett 2014; 39:3238-3241. [PMID: 24876022 DOI: 10.1364/ol.39.003238] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We stabilize a chosen radio frequency beat note between two optical fields derived from the same mode-locked laser pulse train in order to coherently manipulate quantum information. This scheme does not require access or active stabilization of the laser repetition rate. We implement and characterize this external lock, in the context of two-photon stimulated Raman transitions between the hyperfine ground states of trapped 171Yb(+) quantum bits.
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Choi T, Debnath S, Manning TA, Figgatt C, Gong ZX, Duan LM, Monroe C. Optimal quantum control of multimode couplings between trapped ion qubits for scalable entanglement. Phys Rev Lett 2014; 112:190502. [PMID: 24877921 DOI: 10.1103/physrevlett.112.190502] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Indexed: 06/03/2023]
Abstract
We demonstrate entangling quantum gates within a chain of five trapped ion qubits by optimally shaping optical fields that couple to multiple collective modes of motion. We individually address qubits with segmented optical pulses to construct multipartite entangled states in a programmable way. This approach enables high-fidelity gates that can be scaled to larger qubit registers for quantum computation and simulation.
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Affiliation(s)
- T Choi
- Joint Quantum Institute, University of Maryland Department of Physics and National Institute of Standards and Technology, College Park, Maryland 20742, USA
| | - S Debnath
- Joint Quantum Institute, University of Maryland Department of Physics and National Institute of Standards and Technology, College Park, Maryland 20742, USA
| | - T A Manning
- Joint Quantum Institute, University of Maryland Department of Physics and National Institute of Standards and Technology, College Park, Maryland 20742, USA
| | - C Figgatt
- Joint Quantum Institute, University of Maryland Department of Physics and National Institute of Standards and Technology, College Park, Maryland 20742, USA
| | - Z-X Gong
- Joint Quantum Institute, University of Maryland Department of Physics and National Institute of Standards and Technology, College Park, Maryland 20742, USA and Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - L-M Duan
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - C Monroe
- Joint Quantum Institute, University of Maryland Department of Physics and National Institute of Standards and Technology, College Park, Maryland 20742, USA
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Das R, Thapa U, Mandal A, Lyngdoh Y, Kulshreshtha S, Debnath S. Response of red cabbage ( Brassica oleraceavar. capitata f. rubra) to the integrated use of chemical fertilizers, biofertilizers and boron. Appl Biol Rese 2014. [DOI: 10.5958/0974-4517.2014.00056.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Hayes D, Clark SM, Debnath S, Hucul D, Inlek IV, Lee KW, Quraishi Q, Monroe C. Coherent error suppression in multiqubit entangling gates. Phys Rev Lett 2012; 109:020503. [PMID: 23030141 DOI: 10.1103/physrevlett.109.020503] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2011] [Revised: 04/26/2012] [Indexed: 06/01/2023]
Abstract
We demonstrate a simple pulse shaping technique designed to improve the fidelity of spin-dependent force operations commonly used to implement entangling gates in trapped ion systems. This extension of the Mølmer-Sørensen gate can theoretically suppress the effects of certain frequency and timing errors to any desired order and is demonstrated through Walsh modulation of a two qubit entangling gate on trapped atomic ions. The technique is applicable to any system of qubits coupled through collective harmonic oscillator modes.
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Affiliation(s)
- D Hayes
- Joint Quantum Institute and Department of Physics, University of Maryland, College Park, Maryland 20742, USA.
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Ogunsina BS, Indira TN, Bhatnagar AS, Radha C, Debnath S, Gopala Krishna AG. Quality characteristics and stability of Moringa oleifera seed oil of Indian origin. J Food Sci Technol 2011; 51:503-10. [PMID: 24587525 DOI: 10.1007/s13197-011-0519-5] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 08/15/2011] [Accepted: 08/26/2011] [Indexed: 11/30/2022]
Abstract
Cold pressed and hexane extracted moringa seed oils (CPMSO and HEMSO) were evaluated for their physico-chemical and stability characteristics. The iodine value, saponification value and unsaponifiable matter of CPMSO and HEMSO were found to be 67.8 and 68.5 g I2 / 100 g oil, 190.4 and 191.2 mg KOH / g oil and 0.59 and 0.65%, respectively. The total tocopherols of CPMSO and HEMSO were found to be 95.5 and 90.2 mg/Kg. The fatty acid composition of CPMSO and HEMSO showed oleic acid as the major fatty acid (78-79%). The oxidative, thermal and frying stabilities of the CPMSO were compared with commercial raw and refined groundnut oil (GNO and RGNO). The CPMSO was of adequate thermal stability and better oxidative stability as it showed 79% lesser peroxide formation than GNO. The frying stability of CPMSO was better as it showed lower increase in free fatty acid (28%), peroxide value (10 meq O2/Kg) and color (25%) than RGNO (48%, 22 meq O2/kg and 52%, respectively) after frying.
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Affiliation(s)
- Babatunde S Ogunsina
- Department of Agricultural and Environmental Engineering, Obafemi Awolowo University, Ile Ife, Nigeria
| | - T N Indira
- Department of Protein Chemistry and Technology, Central Food Technological Research Institute (CSIR Constituent Laboratory), Mysore, 570020 India
| | - A S Bhatnagar
- Department of Lipid Science and Traditional Foods, Central Food Technological Research Institute (CSIR Constituent Laboratory), Mysore, 570020 India
| | - C Radha
- Department of Protein Chemistry and Technology, Central Food Technological Research Institute (CSIR Constituent Laboratory), Mysore, 570020 India
| | - S Debnath
- Department of Lipid Science and Traditional Foods, Central Food Technological Research Institute (CSIR Constituent Laboratory), Mysore, 570020 India
| | - A G Gopala Krishna
- Department of Lipid Science and Traditional Foods, Central Food Technological Research Institute (CSIR Constituent Laboratory), Mysore, 570020 India
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Debnath S, Datta D, Babu MN, Kumar RS, Senthil V. Studies on the Preparation and Evaluation of Chitosan Nanoparticles containing Cytarabine. ACTA ACUST UNITED AC 2010. [DOI: 10.37285/ijpsn.2010.3.2.9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The activity of cytarabine was decreased by its rapid deamination to the biologically inactive metabolite uracil arabinoside. This rapid deamination is the reason for the ongoing research for effective formulation of cytarabine that can not be deaminated and exhibit better pharmacokinetic parameters. Protection of cytarabine from fast degradation and elimination was investigated by encapsulating the drug into chitosan nanoparticles. Cytarabine loaded nanoparticles prepared by ionotropic gelation were characterized by SEM and was found to in the range of 200 nm.The mechanism by which drug is being released is non-Fickian(anomalous) solute diffusion mechanism. It is evident from the result that initial burst release was retarded or delayed due to adsorption of coating material. The in vivo biodistribution study results showed that the nanoparticles were having better distribution of drug compared to free drug in different organs like spleen, lungs, kidney etc.
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Ghose S, Sinclair N, Debnath S, Rungta P, Stock R. Tripartite entanglement versus tripartite nonlocality in three-qubit Greenberger-Horne-Zeilinger-class states. Phys Rev Lett 2009; 102:250404. [PMID: 19659060 DOI: 10.1103/physrevlett.102.250404] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2008] [Indexed: 05/28/2023]
Abstract
We analyze the relationship between tripartite entanglement and genuine tripartite nonlocality for three-qubit pure states in the Greenberger-Horne-Zeilinger class. We consider a family of states known as the generalized Greenberger-Horne-Zeilinger states and derive an analytical expression relating the three-tangle, which quantifies tripartite entanglement, to the Svetlichny inequality, which is a Bell-type inequality that is violated only when all three qubits are nonlocally correlated. We show that states with three-tangle less than 1/2 do not violate the Svetlichny inequality. On the other hand, a set of states known as the maximal slice states does violate the Svetlichny inequality, and exactly analogous to the two-qubit case, the amount of violation is directly related to the degree of tripartite entanglement. We discuss further interesting properties of the generalized Greenberger-Horne-Zeilinger and maximal slice states.
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Affiliation(s)
- S Ghose
- Department of Physics and Computer Science, Wilfrid Laurier University, Waterloo, Ontario N2L 3C5, Canada
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Debnath S, Hemavathy J, Bhat K, Rastogi N. Rehydration Characteristics of Osmotic Pretreated and Dried Onion. Food and Bioproducts Processing 2004. [DOI: 10.1205/fbio.82.4.304.56405] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Debnath S, Ranade R, Wunder SL, McCool J, Boberick K, Baran G. Interface effects on mechanical properties of particle-reinforced composites. Dent Mater 2004; 20:677-86. [PMID: 15236943 DOI: 10.1016/j.dental.2003.12.001] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2003] [Revised: 11/11/2003] [Accepted: 12/23/2003] [Indexed: 11/30/2022]
Abstract
OBJECTIVES Effective bonding between the filler and matrix components typically improves the mechanical properties of polymer composites containing inorganic fillers. The aim of this study was to test the hypothesis that composite flexural modulus, flexure strength, and toughness are directly proportional to filler-matrix interfacial shear strength. METHODS The resin matrix component of the experimental composite consisted of a 60:40 blend of BisGMA:TEGDMA. Two levels of photoinitiator components were used: 0.15, and 0.5%. Raman spectroscopy was used to determine degree of cure, and thermogravimetry (TGA) was used to quantify the degree of silane, rubber, or polymer attachment to silica and glass particles. Filler-matrix interfacial shear strengths were measured using a microbond test. Composites containing glass particles with various surface treatments were prepared and the modulus, flexure strength, and fracture toughness of these materials obtained using standard methods. Mechanical properties were measured on dry and soaked specimens. RESULTS The interfacial strength was greatest for the 5% MPS treated silica, and it increased for polymers prepared with 0.5% initiator compared with 0.15% initiator concentrations. For the mechanical properties measured, the authors found that: (1) the flexural modulus was independent of the type of filler surface treatment, though flexural strength and toughness were highest for the silanated glass; (2) rubber at the interface, whether bonded to the filler and matrix or not, did not improve toughness; (3) less grafting of resin to silanated filler particles was observed when the initiator concentration decreased. SIGNIFICANCE These findings suggest that increasing the strength of the bond between filler and matrix will not result in improvements in the mechanical properties of particulate-reinforced composites in contrast to fiber-reinforced composites. Also, contraction stresses in the 0.5 vs 0.15% initiator concentration composites may be responsible for increases in interfacial shear strengths, moduli, and flexural strengths.
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Affiliation(s)
- S Debnath
- Department of Chemistry, Temple University, 1947 N. 12th Street, Philadelphia, PA 19122, USA
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Abstract
The interactions of the silane coupling agent methacryloxypropyltrimethoxysilane (MPS) with both fumed silica and a polymethylmethacrylate (PMMA) resin matrix were investigated using thermogravimetric analysis and Fourier transform infrared spectroscopy. OX 50 fumed silica was silanated with MPS at concentrations of 1% and 5% in aqueous ethanol (95%), acetone, and anhydrous toluene. Methyl methacrylate was polymerized with the silanated fumed silica (5% wt/wt) to form composites. The amount of MPS adsorption on the fumed silica and the amount of PMMA attached to the silanated fumed silica were determined by thermogravimetric analysis. MPS could be removed from the fumed silica after washing with methanol, but not after it underwent a drying process at 25 degrees C under vacuum. After vacuum drying at 25 degrees C, two types of adsorbed silane were found, i.e., firmly adsorbed and loosely adsorbed silane. The loosely adsorbed silane could desorb from silica and be incorporated into the polymer matrix through copolymerization with monomeric methyl methacrylate, resulting in crosslinking of the matrix. When the silanated silica was dried at 110 degrees C for 2 h, the loosely adsorbed silane was removed and the amount of firmly adsorbed silane increased. There was a positive correlation between the amount of firmly adsorbed MPS and the amount of PMMA attachment. The highest efficiency for PMMA attachment was found when MPS was adsorbed as a monolayer, because the loosely adsorbed silane did not contribute to the bonding of PMMA, and this suggested that not all of the double bonds of the MPS were accessible for reaction with the methacrylate monomer. Drying at 110 degrees C may also decrease the number of unsaturated double bonds of MPS.
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Affiliation(s)
- Q Liu
- Center for Bioengineering and Biomaterials, College of Engineering, Temple University, 1947 North 12th Street, Philadelphia, Pennsylvania 19122, USA
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Kawase M, Varu B, Shah A, Motohashi N, Tani S, Saito S, Debnath S, Mahapatra S, Dastidar SG, Chakrabarty AN. Antimicrobial activity of new coumarin derivatives. Arzneimittelforschung 2001; 51:67-71. [PMID: 11215328 DOI: 10.1055/s-0031-1300004] [Citation(s) in RCA: 9] [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] [Indexed: 10/28/2022]
Abstract
A preliminary exploration of coumarin analogs as novel antimicrobial agents was carried out to determine the basic features of the structure responsible for the observed biological activity. The substituents ester or carboxylic acid on the coumarin ring were needed to have potent inhibitory activity against both Gram-positive and Gram-negative bacteria. The presence of phenolic hydroxyl group and/or carboxylic acid was necessary to possess higher activity against Helicobacter pylori.
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Affiliation(s)
- M Kawase
- Faculty of Pharmaceutical Sciences, Josai University, Saitama, Japan.
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Abstract
In vitro metabolism of pregnenolone (P5) as well as production of 17beta-estradiol (E2) were studied in uteri of untreated and luteinizing hormone (LH)-treated mice that had been ovariectomized (OVX) at late-diestrus stage. In the uteri of untreated mice, [H]pregnenolone was shown to be metabolized to Delta-components such as 17alpha-hydroxypregnenolone (17alpha-P5) and dehydroepiandrosterone (DHEA), whereas LH treatment resulted in significant increases in the formation of progesterone (P4), 17alpha-hydroxyprogesterone (17alpha-P4), androstenedione (AD) and testosterone (T). This was assessed by thin-layer chromatography (TLC) and high-performance liquid chromatography (HPLC). The content and release of P4 was shown to be stimulated by LH. Trilostane, an inhibitor of 3beta-hydroxysteroid dehydrogenase (3beta-HSD), inhibited LH-induced P4 synthesis and its release in a dose-dependent manner. A considerable increase in [H]estradiol formation from [H]testosterone was recorded in LH-stimulated uterine tissue as compared with the control, indicating the stimulatory effect of LH on aromatase activity. LH-stimulation in the synthesis of P4 and E2 in OVX mouse uteri was mimicked by dbcAMP (cell-permeable cAMP). Incubation with LH was shown to augment the conversion of P4 to various delta-3-oxosteroids. In vitro effects of LH on the synthesis and metabolism of P4, as well as on the stimulation of aromatase activity, were more pronounced in the uterine tissue of LH-primed OVX mice. Thus the results of the present study indicate that, under specific conditions, the uterus of the mouse behaves like steroidogenic tissue. Its prompt response to LH reveals the probable physiological relevance of the existence of LH receptors of high binding affinity in the uterine tissue of the mouse, as reported earlier.
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Affiliation(s)
- S Debnath
- Endocrinology Laboratory, Department of Zoology, Kalyani University, Kalyani 741 235, India
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Dwivedi AD, Falleiro J, Debnath S. TORSION FALLOPIAN TUBE (A Case Report). Med J Armed Forces India 1997; 53:315-316. [PMID: 28775397 DOI: 10.1016/s0377-1237(17)30767-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- A D Dwivedi
- Classified Specialist (Obstetrics & Gynaecology), Military Hospital, Ambala Cantt, Haryana 133001
| | - Jjj Falleiro
- Classified Specialist (Pathology) 181 Military Hospital, C/o 99 APO
| | - S Debnath
- Graded Specialist (Anaestheiology), 305 Field Ambulance, C/o 99 APO
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Abstract
Abstract
We have studied the effect of addition of (a) mica, (b) silane coupling agent, and (c) silane-treated mica on the ambient dielectric properties of vulcanized styrene-butadiene rubber. It is observed that both dielectric constant and dielectric loss increase as mica, silane, and silane-treated mica are added. The increase is more pronounced in the case of silane-treated mica than for the untreated mica systems. The observed values of dielectric constants are in close agreement with the calculated ones obtained from different theories of heterogeneous dielectrics. Dielectric strength shows an increasing trend in the presence of mica. At higher mica loading, D.C. conductivity decreases slightly.
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Affiliation(s)
- S. Debnath
- 1Rubber Technology Centre, Indian Institute of Technology, Kharagpur 721302, India
| | - Prajna P. De
- 1Rubber Technology Centre, Indian Institute of Technology, Kharagpur 721302, India
| | - D. Khastgir
- 1Rubber Technology Centre, Indian Institute of Technology, Kharagpur 721302, India
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