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Mann P, Joshi H, Nayyar V, Mishra D, Mehta DS. Birefringence mapping of biological tissues based on polarization sensitive non-interferometric quantitative phase imaging technique. Photodiagnosis Photodyn Ther 2024:104094. [PMID: 38642728 DOI: 10.1016/j.pdpdt.2024.104094] [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: 02/26/2024] [Revised: 04/13/2024] [Accepted: 04/17/2024] [Indexed: 04/22/2024]
Abstract
OBJECTIVE Oral cancer is a leading cause of mortality globally, particularly affecting developing regions where oral hygiene is often overlooked. The optical properties of tissues are vital for diagnostics, with polarization imaging emerging as a label-free, contrast-enhancing technique widely employed in medical and scientific research over past few decades. MATERIALS AND METHODS We present a novel polarization sensitive quantitative phase imaging of biological tissues by incorporating the conventional polarization microscope and transport of intensity equation-based phase retrieval algorithm. This integration provides access to the birefringence mapping of biological tissues. The inherent optical anisotropy in biological tissues induces the polarization dependent refractive index variations which can provide the detailed insights into the birefringence characteristics of their extracellular constituents. Experimental investigations were conducted on both normal and cancerous oral tissue samples by recording a set of three polarization intensity images for each case with a step size of 2 μm. RESULTS A noteworthy increment in birefringence quantification was observed in cancerous as compared to the normal tissues, attributed to the proliferation of abnormal cells during cancer progression. The mean birefringence values were calculated for both normal and cancerous tissues, revealing a significant increase in birefringence of cancerous tissues (2.1±0.2) ×10-2 compared to normal tissues (0.8±0.2) ×10-2. Data were collected from 8 patients in each group under identical experimental conditions. CONCLUSION This polarization sensitive non-interferometric optical approach demonstrated effective discrimination between cancerous and normal tissues, with various parameters indicating elevated values in cancerous tissues.
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Affiliation(s)
- Priyanka Mann
- Bio-photonics and Green-photonics Laboratory, Department of Physics, Indian Institute of Technology Delhi, Hauz-Khas, New Delhi 110016, India
| | - Himanshu Joshi
- Bio-photonics and Green-photonics Laboratory, Department of Physics, Indian Institute of Technology Delhi, Hauz-Khas, New Delhi 110016, India
| | - Vivek Nayyar
- Department of Oral Pathology and Microbiology, Centre for Dental Education & Research, All India Institute of Medical Sciences (AIIMS), Delhi
| | - Deepika Mishra
- Department of Oral Pathology and Microbiology, Centre for Dental Education & Research, All India Institute of Medical Sciences (AIIMS), Delhi
| | - Dalip Singh Mehta
- Bio-photonics and Green-photonics Laboratory, Department of Physics, Indian Institute of Technology Delhi, Hauz-Khas, New Delhi 110016, India..
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Fujiwara Y, Karol AB, Joshi H, Reford E, Izadmehr S, Doroshow DB, Galsky MD. C-reactive protein (CRP) as a prognostic biomarker in patients with urothelial carcinoma: A systematic review and meta-analysis. Crit Rev Oncol Hematol 2024; 197:104352. [PMID: 38614269 DOI: 10.1016/j.critrevonc.2024.104352] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 03/21/2024] [Accepted: 04/10/2024] [Indexed: 04/15/2024] Open
Abstract
C-reactive protein (CRP) may reflect a pro-inflammatory tumor microenvironment and could represent a biomarker to select patients with urothelial carcinoma more likely to benefit from therapies directed at modulating tumor-promoting inflammation. We performed a systematic review to evaluate survival outcomes based on pre-treatment CRP values in urothelial carcinoma. The hazard ratios (HRs) of survival such as overall survival (OS) and progression-free survival (PFS) between groups with high versus low CRP values were pooled by the random-effect model meta-analyses. Overall, 28 studies comprising 6789 patients were identified for meta-analyses. High CRP levels were associated with shorter OS (HR=1.96 [95% CI: 1.64-2.33], p < 0.01), particularly in advanced disease treated with immune checkpoint blockade (ICB, HR=1.78 [1.47-2.15], p < 0.01). Similar findings were observed in ICB-treated patients with PFS. These findings suggest that CRP could be an attractive biomarker to select patients with urothelial carcinoma for strategies seeking to modulate tumor-promoting inflammation.
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Affiliation(s)
- Yu Fujiwara
- Department of Medicine, Icahn School of Medicine at Mount Sinai, Mount Sinai Beth Israel, 281 1st Ave, New York, NY 10003, USA; Department of Medicine, Roswell Park Comprehensive Cancer Center, Elm and Carlton Sts, Buffalo, NY 14263, USA.
| | - Alexander B Karol
- Department of Medicine, Icahn School of Medicine at Mount Sinai, Mount Sinai Hospital, 1 Gustave L. Levy Place, New York, NY 10029, USA
| | - Himanshu Joshi
- Division of Hematology and Medical Oncology, The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, 1470 Madison Avenue, New York, NY 10029, USA; Department of Population Health and Policy, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA; Institute for Healthcare Delivery Science, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA
| | - Emma Reford
- Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA
| | - Sudeh Izadmehr
- Division of Hematology and Medical Oncology, The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, 1470 Madison Avenue, New York, NY 10029, USA
| | - Deborah B Doroshow
- Division of Hematology and Medical Oncology, The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, 1470 Madison Avenue, New York, NY 10029, USA
| | - Matthew D Galsky
- Division of Hematology and Medical Oncology, The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, 1470 Madison Avenue, New York, NY 10029, USA
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Oh H, Tu YM, Samineni L, De Respino S, Mehrafrooz B, Joshi H, Massenburg L, Lopez-Marques H, Elessawy N, Song W, Behera H, Dhiman R, Boorla VS, Kher K, Lin YC, Maranas C, Aksimentiev A, D Freeman B, Kumar M. Dehydrated Biomimetic Membranes with Skinlike Structure and Function. ACS Appl Mater Interfaces 2024. [PMID: 38598825 DOI: 10.1021/acsami.3c19572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Abstract
Novel vapor-permeable materials are sought after for applications in protective wear, energy generation, and water treatment. Current impermeable protective materials effectively block harmful agents but trap heat due to poor water vapor transfer. Here we present a new class of materials, vapor permeable dehydrated nanoporous biomimetic membranes (DBMs), based on channel proteins. This application for biomimetic membranes is unexpected as channel proteins and biomimetic membranes were assumed to be unstable under dry conditions. DBMs mimic human skin's structure to offer both high vapor transport and small molecule exclusion under dry conditions. DBMs feature highly organized pores resembling sweat pores in human skin, but at super high densities (>1012 pores/cm2). These DBMs achieved exceptional water vapor transport rates, surpassing commercial breathable fabrics by up to 6.2 times, despite containing >2 orders of magnitude smaller pores (1 nm vs >700 nm). These DBMs effectively excluded model biological agents and harmful chemicals both in liquid and vapor phases, again in contrast with the commercial breathable fabrics. Remarkably, while hydrated biomimetic membranes were highly permeable to liquid water, they exhibited higher water resistances after dehydration at values >38 times that of commercial breathable fabrics. Molecular dynamics simulations support our hypothesis that dehydration induced protein hydrophobicity increases which enhanced DBM performance. DBMs hold promise for various applications, including membrane distillation, dehumidification, and protective barriers for atmospheric water harvesting materials.
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Affiliation(s)
- Hyeonji Oh
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Yu-Ming Tu
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Laximicharan Samineni
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Sophie De Respino
- Maseeh Department of Civil, Architectural and Environmental Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Behzad Mehrafrooz
- Center for Biophysics and Quantitative Biology, The University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Physics and Beckman Institute for Advanced Science and Technology, The University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Himanshu Joshi
- Department of Biotechnology, Indian Institute of Technology, Hyderabad 502285, India
| | - Lynnicia Massenburg
- Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Horacio Lopez-Marques
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Nada Elessawy
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Woochul Song
- Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, South Korea
| | - Harekrushna Behera
- Maseeh Department of Civil, Architectural and Environmental Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Raman Dhiman
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Veda Sheersh Boorla
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Kartik Kher
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Yi-Chih Lin
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Costas Maranas
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Aleksei Aksimentiev
- Center for Biophysics and Quantitative Biology, The University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Physics and Beckman Institute for Advanced Science and Technology, The University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Benny D Freeman
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Manish Kumar
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
- Maseeh Department of Civil, Architectural and Environmental Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
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Pedraza AM, Gupta R, Joshi H, Parekh S, Schlussel K, Berryhill R, Kaufmann B, Wagaskar V, Gorin MA, Menon M, Tewari AK. Saline-assisted fascial exposure (SAFE) technique to improve nerve-sparing in robot-assisted laparoscopic radical prostatectomy. BJU Int 2024; 133:451-459. [PMID: 38062880 DOI: 10.1111/bju.16238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2023]
Abstract
OBJECTIVE To provide a summary of our initial experience and assess the impact of the Saline-Assisted Fascial Exposure (SAFE) technique on erectile function (EF), urinary continence, and oncological outcomes after Robot-Assisted Laparoscopic Radical Prostatectomy (RALP). PATIENTS AND METHODS From January 2021 to July 2022, we included patients with a baseline Sexual Health Inventory for Men (SHIM) score of ≥17 and a high probability of extracapsular extension (ECE), ranging from 21% to 73%, as per the Martini et al. nomogram. A propensity score matching was carried out at a ratio of 1:2 between patients who underwent RALP + SAFE (33) and RALP alone (66). The descriptive statistical analysis is presented. The SAFE technique was performed using two approaches, transrectal guided by micro-ultrasound or transperitoneal. Its principle entails a low-pressure injection of saline solution in the periprostatic fascia to achieve an atraumatic dissection of the neural hammock. Potency was defined as a SHIM score of ≥17 and continence as no pads per day. RESULTS At follow-up intervals of 6, 13, 26, and 52 weeks, the SHIM score differed significantly between the two groups, favouring the RALP + SAFE (P = 0.01, P < 0.001, P < 0.001, and P = 0.01, respectively). These results remained significant when the mean SHIM score was assessed. As shown by the cumulative incidence curve, EF rates were higher in the RALP + SAFE compared to the RALP alone group (log-rank P < 0.001). The baseline SHIM and use of the SAFE technique were independent predictors of EF recovery. CONCLUSIONS The use of the SAFE technique led to better SHIM scores at 6, 13, 26, and 52 weeks after RALP in patients at high risk of ECE who underwent a partial NS procedure.
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Affiliation(s)
- Adriana M Pedraza
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York City, New York, USA
| | - Raghav Gupta
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York City, New York, USA
| | - Himanshu Joshi
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York City, New York, USA
- Department of Population Health Science and Policy, Institute for Healthcare Delivery Science, Icahn School of Medicine at Mount Sinai, New York City, New York, USA
| | - Sneha Parekh
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York City, New York, USA
| | - Kacie Schlussel
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York City, New York, USA
| | - Roy Berryhill
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York City, New York, USA
| | - Basil Kaufmann
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York City, New York, USA
| | - Vinayak Wagaskar
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York City, New York, USA
| | - Michael A Gorin
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York City, New York, USA
| | - Mani Menon
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York City, New York, USA
| | - Ashutosh K Tewari
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York City, New York, USA
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Patel ZZ, Joshi H, Puvar A, Pandit R, Joshi C, Joshi M, Tipre DR. A study into the diversity of coral-associated bacteria using culture-dependent and culture-independent approaches in coral Dipsastraea favus from the Gulf of Kutch. Mar Pollut Bull 2024; 201:116172. [PMID: 38394797 DOI: 10.1016/j.marpolbul.2024.116172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 12/03/2023] [Accepted: 02/15/2024] [Indexed: 02/25/2024]
Abstract
Corals harbour ~25 % of the marine diversity referring to biodiversity hotspots in marine ecosystems. Global efforts to find ways to restore the coral reef ecosystem from various threats can be complemented by studying coral-associated bacteria. Coral-associated bacteria are vital components of overall coral wellbeing. We explored the bacterial diversity associated with coral Dipsastraea favus (D. favus) collected from the Gulf of Kutch, India, using both culture-dependent and metagenomic approaches. In both approaches, phylum Proteobacteria, Firmicutes, and Actinobacteria predominated, comprising the genera Vibrio, Bacillus, Shewanella, Pseudoalteromonas, Exiguobacterium and Streptomyces. Moreover, the majority of culturable isolates showed multiple antibiotic resistance index ≥0.2. In this study, specific bacterial diversity associated with coral sp. D. favus and its possible role in managing coral health was established. Almost 43 strains from the samples were successfully cultured, creating a base for exploring these microbes for their potential use in coral conservation methods.
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Affiliation(s)
- Zarna Z Patel
- Department of Microbiology and Biotechnology, School of Sciences, Gujarat University, Ahmedabad 380009, India; Gujarat Biotechnology Research Centre (GBRC), Department of Science and Technology (DST), Government of Gujarat, Gandhinagar 382011, India
| | - Himanshu Joshi
- Gujarat Biotechnology Research Centre (GBRC), Department of Science and Technology (DST), Government of Gujarat, Gandhinagar 382011, India
| | - Apurvasinh Puvar
- Gujarat Biotechnology Research Centre (GBRC), Department of Science and Technology (DST), Government of Gujarat, Gandhinagar 382011, India
| | - Ramesh Pandit
- Gujarat Biotechnology Research Centre (GBRC), Department of Science and Technology (DST), Government of Gujarat, Gandhinagar 382011, India
| | - Chaitanya Joshi
- Gujarat Biotechnology Research Centre (GBRC), Department of Science and Technology (DST), Government of Gujarat, Gandhinagar 382011, India
| | - Madhvi Joshi
- Gujarat Biotechnology Research Centre (GBRC), Department of Science and Technology (DST), Government of Gujarat, Gandhinagar 382011, India.
| | - Devayani R Tipre
- Department of Microbiology and Biotechnology, School of Sciences, Gujarat University, Ahmedabad 380009, India.
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Hazra M, Watts JEM, Williams JB, Joshi H. An evaluation of conventional and nature-based technologies for controlling antibiotic-resistant bacteria and antibiotic-resistant genes in wastewater treatment plants. Sci Total Environ 2024; 917:170433. [PMID: 38286289 DOI: 10.1016/j.scitotenv.2024.170433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 01/10/2024] [Accepted: 01/23/2024] [Indexed: 01/31/2024]
Abstract
Antibiotic resistance is a globally recognized health concern which leads to longer hospital stays, increased morbidity, increased mortality, and higher medical costs. Understanding how antibiotic resistance persists and exchanges in environmental systems like soil, water, and wastewater are critically important for understanding the emergence of pathogens with new resistance profiles and the subsequent exposure of people who indirectly/directly come in contact with these pathogens. There are concerns about the widespread application of prophylactic antibiotics in the clinical and agriculture sectors, as well as chemicals/detergents used in food and manufacturing industries, especially the quaternary ammonium compounds which have been found responsible for the generation of resistant genes in water and soil. The rates of horizontal gene transfer increase where there is a lack of proper water/wastewater infrastructure, high antibiotic manufacturing industries, or endpoint users - such as hospitals and intensive agriculture. Conventional wastewater treatment technologies are often inefficient in the reduction of ARB/ARGs and provide the perfect combination of conditions for the development of antibiotic resistance. The wastewater discharged from municipal facilities may therefore be enriched with bacterial communities/pathogens and provide a suitable environment (due to the presence of nutrients and other pollutants) to enhance the transfer of antibiotic resistance. However, facilities with tertiary treatment (either traditional/emerging technologies) provide higher rates of reduction. This review provides a synthesis of the current understanding of wastewater treatment and antibiotic resistance, examining the drivers that may accelerate their possible transmission to a different environment, and highlighting the need for tertiary technologies used in treatment plants for the reduction of resistant bacteria/genes.
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Affiliation(s)
- Moushumi Hazra
- Department of Hydrology, Indian Institute of Technology, Roorkee, Uttarakhand, India; International Water Management Institute, New Delhi, India; Civil and Environmental Engineering, University of Nebraska Lincoln, United States.
| | - Joy E M Watts
- School of Biological Sciences, University of Portsmouth, United Kingdom
| | - John B Williams
- School of Civil Engineering and Surveying, University of Portsmouth, United Kingdom
| | - Himanshu Joshi
- Department of Hydrology, Indian Institute of Technology, Roorkee, Uttarakhand, India
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Stier EA, Jain M, Joshi H, Darragh TM, Deshmukh AA, Lee J, Einstein MH, Jay N, Berry-Lawhorn JM, Palefsky JM, Wilkin T, Ellsworth G, French AL, Barroso LF, Levine R, Guiot HM, Rezaei MK, Chiao E. Two-Year Incidence and Cumulative Risk and Predictors of Anal High-Grade Squamous Intraepithelial Lesions (Anal Precancer) Among Women With Human Immunodeficiency Virus. Clin Infect Dis 2024; 78:681-689. [PMID: 37805952 PMCID: PMC10954341 DOI: 10.1093/cid/ciad614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 08/17/2023] [Accepted: 10/04/2023] [Indexed: 10/10/2023] Open
Abstract
BACKGROUND Detection and treatment of anal histologic high-grade squamous intraepithelial lesions (hHSIL) prevents anal cancer. However, anal hHSIL incidence among women with human immunodeficiency virus (HIV, WHIV) remains unknown. Performance of anal high-risk human papillomavirus ([hr]HPV), anal cytology (anal-cyt), and both for hHSIL detection longitudinally over 2 years also remains undetermined. METHODS We determined 2-year incidence and cumulative risk estimates (2-y-CR) of anal hHSIL among WHIV using prevalence and incidence (per 100 person-years [py]) observations stratified by baseline hrHPV and/or anal-cyt results. RESULTS In total, 229 WHIV with complete baseline data were included in the analysis; 114 women without prevalent anal hHSIL were followed with 2 annual evaluations. Median age was 51, 63% were Black, and 23% were Hispanic. Anal hrHPV or abnormal anal-cyt was associated with an increased risk of incident anal hHSIL at 2 years (18.9/100py [95% confidence interval {CI} 11.4-31.3] and 13.4/100py [95% CI 8.0-22.7], respectively) compared with no detection of anal HPV or negative cytology (2.8/100py [95% CI 1.1-7.4] and 4.2 [95% CI, 1.8-10.2]) The presence of anal hrHPV with abnormal cytology was associated with 2-y-CR of anal hHSIL of 65.6% (95% CI 55.4%-75%); negative hrHPV with negative cytology was associated with 2-y-CR of anal hHSIL of 9.2% (95% CI 7.0-16.0). CONCLUSIONS Detection of anal hrHPV or abnormal anal cytology are comparable predictors for 2-y-CR of anal hHSIL. The absence of anal hrHPV combined with negative cytology was predictive of a lower (but measurable) risk of developing anal hHSIL. These findings provide important data to inform anal cancer screening guidelines for WHIV.
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Affiliation(s)
- Elizabeth A Stier
- Department of Obstetrics and Gynecology, Boston University Chobanian & Avedisian School of Medicine, Boston, Massachusetts, USA
| | - Mayuri Jain
- Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, Institute for Healthcare Delivery Science, NewYork, New York, USA
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, NewYork, New York, USA
| | - Himanshu Joshi
- Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, Institute for Healthcare Delivery Science, NewYork, New York, USA
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, NewYork, New York, USA
| | - Teresa M Darragh
- Department of Pathology, UCSF Mt. Zion Medical Center, SanFrancisco, California, USA
| | - Ashish A Deshmukh
- Department of Public Health Sciences, Medical University of South Carolina, Charleston, South Carolina, USA
- Hollings Cancer Center, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Jeannette Lee
- Department of Biostatistics, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Mark H Einstein
- Department of OB/GYN & Women's Health, Rutgers- NJMS, Newark, New Jersey, USA
| | - Naomi Jay
- Anal Neoplasia Clinic, Research, and Education Center, University of California San Francisco, San Francisco, California, USA
| | - J Michael Berry-Lawhorn
- Anal Neoplasia Clinic, Research, and Education Center, University of California San Francisco, San Francisco, California, USA
- Division of Hematology Oncology, University of California San Francisco, San Francisco, California, USA
| | - Joel M Palefsky
- Anal Neoplasia Clinic, Research, and Education Center, University of California San Francisco, San Francisco, California, USA
- Department of Medicine, University of California San Francisco, San Francisco, California, USA
| | - Timothy Wilkin
- Division of Infectious Diseases, Department of Medicine, Cornell University, NewYork, New York, USA
| | - Grant Ellsworth
- Division of Infectious Diseases, Department of Medicine, Cornell University, NewYork, New York, USA
| | - Audrey L French
- Division of Infectious Diseases, CORE Center/Stroger Hospital of Cook County, Chicago, Illinois, USA
| | - Luis F Barroso
- Department of Internal Medicine (Infectious Diseases), Wake Forest University Health Sciences, Winston-Salem, North Carolina, USA
| | | | - Humberto M Guiot
- Department of Medicine, University of Puerto Rico School of Medicine, San Juan, PR, USA
- Department of Microbiology & Medical Zoology, University of Puerto Rico School of Medicine, San Juan, Puerto Rico USA
| | - M Katayoon Rezaei
- Department of Pathology, George Washington University, Washington, DC, USA
| | - Elizabeth Chiao
- Department of Epidemiology, Division of Cancer Prevention, University of Texas - MD Anderson Cancer Center, Houston, Texas, USA
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8
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Rajdev L, Wang CCJ, Joshi H, Lensing S, Lee J, Ramos JC, Baiocchi R, Ratner L, Rubinstein PG, Ambinder R, Henry D, Streicher H, Little RF, Chiao E, Dittmer DP, Einstein MH, Cesarman E, Mitsuyasu R, Sparano JA. Assessment of the safety of nivolumab in people living with HIV with advanced cancer on antiretroviral therapy: the AIDS Malignancy Consortium 095 Study. Cancer 2024; 130:985-994. [PMID: 37962072 PMCID: PMC10922055 DOI: 10.1002/cncr.35110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 10/08/2023] [Accepted: 10/12/2023] [Indexed: 11/15/2023]
Abstract
BACKGROUND Although immunotherapy has emerged as a therapeutic strategy for many cancers, there are limited studies establishing the safety and efficacy in people living with HIV (PLWH) and cancer. METHODS PLWH and solid tumors or Kaposi sarcoma (KS) receiving antiretroviral therapy and a suppressed HIV viral load received nivolumab at 3 mg/kg every 2 weeks, in two dose deescalation cohorts stratified by CD4 count (stratum 1: CD4 count > 200/µL and stratum 2: CD4 count 100-199/µL). An expansion cohort of 24 participants with a CD4 count > 200/µL was then enrolled. RESULTS A total of 36 PLWH received nivolumab, including 15 with KS and 21 with a variety of other solid tumors. None of the first 12 participants had dose-limiting toxicity in both CD4 strata, and five patients (14%) overall had grade 3 or higher immune related adverse events. Objective partial response occurred in nine PLWH and cancer (25%), including in six of 15 with KS (40%; 95% CI, 16.3-64.7). The median duration of response was 9.0 months overall and 12.5 months in KS. Responses were observed regardless of PDL1 expression. There were no significant changes in CD4 count or HIV viral load. CONCLUSIONS Nivolumab has a safety profile in PLWH similar to HIV-negative subjects with cancer, and also efficacy in KS. Plasma HIV remained suppressed and CD4 counts remained stable during treatment and antiretroviral therapy, indicating no adverse impact on immune function. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT02408861.
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Affiliation(s)
- Lakshmi Rajdev
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY
| | | | - Himanshu Joshi
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY
| | | | - Jeannette Lee
- University of Arkansas for Medical Sciences, Little Rock, AK
| | | | - Robert Baiocchi
- Ohio State University James Comprehensive Cancer Center, Columbus OH
| | | | - Paul G. Rubinstein
- Stroger Hospital of Cook County (Cook County Hospital), Ruth M. Rothstein Core Center, Division of Hematology/Oncology, University of Illinois, Chicago, IL
| | | | | | - Howard Streicher
- Division of Cancer Treatment and Diagnosis, National Cancer Institute (NCI), National Institutes of Health, Bethesda, MD
| | - Richard F. Little
- Division of Cancer Treatment and Diagnosis, National Cancer Institute (NCI), National Institutes of Health, Bethesda, MD
| | | | | | | | | | - Ronald Mitsuyasu
- University of California Los Angeles Care Center, Los Angeles, CA
| | - Joseph A. Sparano
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY
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Zhou S, Alerasool P, Kishi N, Joshi H, Sahni G, Tsao CK. Cardiovascular Toxicity Associated With Androgen Receptor Axis-Targeted Agents in Patients With Prostate Cancer: A Meta-analysis of Randomized Controlled Trials. Clin Genitourin Cancer 2024:102066. [PMID: 38584004 DOI: 10.1016/j.clgc.2024.102066] [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: 12/06/2023] [Revised: 01/16/2024] [Accepted: 02/12/2024] [Indexed: 04/09/2024]
Abstract
INTRODUCTION Second-generation androgen receptor axis-targeting (ARAT) agents have become a standard treatment for patients with advanced prostate cancer (PC), however much remains unknown about the potential cardiovascular toxicities. PATIENTS AND METHODS We performed a systematic search of PubMed, Embase, Web of Science, and Cochrane library for randomized controlled trials of patients receiving ARAT agents for PC from inception to March 2023. The odds ratios (ORs) of all-grade and high-grade cardiovascular adverse events (CVAEs) for patients treated with and without ARAT agents were pooled for meta-analysis. Subgroup analyses based on PC type and treatment regimen were conducted. RESULTS A total of 15 double-blind placebo-controlled phase 3 trials comprising 15,842 patients were included. In addition to hot flush and hypertension of any degree of severity, inclusion of ARAT agents was associated with a significantly higher risk of acute myocardial infarction (OR: 1.96, 95% CI: 1.05-3.68, P = .04), myocardial infarction (OR: 2.44, 95% CI: 1.27-4.66, P = .007) and angina pectoris (OR: 2.00, 95% CI: 1.00-4.02, P = .05). With regard to individual ARAT agents, enzalutamide was associated with a significantly higher risk of acute myocardial infarction (OR: 3.11, 95% CI: 1.17-8.28, P = .02), coronary artery disease (OR: 8.33, 95% CI: 1.54-44.95, P = .01), and high-grade hypertension (OR: 4.94, 95% CI: 1.11-22.06, P = .04), while abiraterone and apalutamide were associated with a significantly higher risk of angina pectoris (OR: 5.48, 95% CI: 1.23-24.33, P = .03) and myocardial infarction (OR: 7.00, 95% CI: 1.60-30.62, P = .01), respectively. CONCLUSION The inclusion of ARAT agents was associated with a significantly higher risk of several CVAEs. Clinicians should remain vigilant, both in pre-treatment screening and monitoring for clinical symptoms and signs, when considering ARAT agent particularly for patients with pre-existing risk factors.
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Affiliation(s)
- Susu Zhou
- Department of Medicine, Icahn School of Medicine at Mount Sinai, Mount Sinai Beth Israel, New York, NY.
| | - Parissa Alerasool
- Division of Hematology/Medical Oncology, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY; New York Medical College, Valhalla, NY
| | - Noriko Kishi
- Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Himanshu Joshi
- Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Gagan Sahni
- Mount Sinai Cardiovascular Institute, New York, NY
| | - Che-Kai Tsao
- Division of Hematology/Medical Oncology, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY
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10
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Feng Y, Chandio BQ, Villalon-Reina JE, Benavidez S, Chattopadhyay T, Chehrzadeh S, Laltoo E, Thomopoulos SI, Joshi H, Venkatasubramanian G, John JP, Jahanshad N, Thompson PM. Deep Normative Tractometry for Identifying Joint White Matter Macro- and Micro-structural Abnormalities in Alzheimer's Disease. bioRxiv 2024:2024.02.05.578943. [PMID: 38370817 PMCID: PMC10871218 DOI: 10.1101/2024.02.05.578943] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
This study introduces the Deep Normative Tractometry (DNT) framework, that encodes the joint distribution of both macrostructural and microstructural profiles of the brain white matter tracts through a variational autoencoder (VAE). By training on data from healthy controls, DNT learns the normative distribution of tract data, and can delineate along-tract micro-and macro-structural abnormalities. Leveraging a large sample size via generative pre-training, we assess DNT's generalizability using transfer learning on data from an independent cohort acquired in India. Our findings demonstrate DNT's capacity to detect widespread diffusivity abnormalities along tracts in mild cognitive impairment and Alzheimer's disease, aligning closely with results from the Bundle Analytics (BUAN) tractometry pipeline. By incorporating tract geometry information, DNT may be able to distinguish disease-related abnormalities in anisotropy from tract macrostructure, and shows promise in enhancing fine-scale mapping and detection of white matter alterations in neurodegenerative conditions.
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Affiliation(s)
- Yixue Feng
- Imaging Genetics Center, Mark and Mary Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California, Marina del Rey, CA, United States
| | - Bramsh Q Chandio
- Imaging Genetics Center, Mark and Mary Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California, Marina del Rey, CA, United States
| | - Julio E Villalon-Reina
- Imaging Genetics Center, Mark and Mary Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California, Marina del Rey, CA, United States
| | - Sebastian Benavidez
- Imaging Genetics Center, Mark and Mary Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California, Marina del Rey, CA, United States
| | - Tamoghna Chattopadhyay
- Imaging Genetics Center, Mark and Mary Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California, Marina del Rey, CA, United States
| | - Sasha Chehrzadeh
- Imaging Genetics Center, Mark and Mary Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California, Marina del Rey, CA, United States
| | - Emily Laltoo
- Imaging Genetics Center, Mark and Mary Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California, Marina del Rey, CA, United States
| | - Sophia I Thomopoulos
- Imaging Genetics Center, Mark and Mary Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California, Marina del Rey, CA, United States
| | - Himanshu Joshi
- Multimodal Brain Image Analysis Laboratory, Translational Psychiatry Laboratory, National Institute of Mental Health and Neuro Sciences (NIMHANS), Bengaluru, Karnataka, India
| | - Ganesan Venkatasubramanian
- Multimodal Brain Image Analysis Laboratory, Translational Psychiatry Laboratory, National Institute of Mental Health and Neuro Sciences (NIMHANS), Bengaluru, Karnataka, India
| | - John P John
- Multimodal Brain Image Analysis Laboratory, Translational Psychiatry Laboratory, National Institute of Mental Health and Neuro Sciences (NIMHANS), Bengaluru, Karnataka, India
| | - Neda Jahanshad
- Imaging Genetics Center, Mark and Mary Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California, Marina del Rey, CA, United States
| | - Paul M Thompson
- Imaging Genetics Center, Mark and Mary Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California, Marina del Rey, CA, United States
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11
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Chattopadhyay T, Joshy NA, Ozarkar SS, Buwa K, Feng Y, Laltoo E, Thomopoulos SI, Villalon JE, Joshi H, Venkatasubramanian G, John JP, Thompson PM. Brain Age Analysis and Dementia Classification using Convolutional Neural Networks trained on Diffusion MRI: Tests in Indian and North American Cohorts. bioRxiv 2024:2024.02.04.578829. [PMID: 38370641 PMCID: PMC10871286 DOI: 10.1101/2024.02.04.578829] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Deep learning models based on convolutional neural networks (CNNs) have been used to classify Alzheimer's disease or infer dementia severity from T1-weighted brain MRI scans. Here, we examine the value of adding diffusion-weighted MRI (dMRI) as an input to these models. Much research in this area focuses on specific datasets such as the Alzheimer's Disease Neuroimaging Initiative (ADNI), which assesses people of North American, largely European ancestry, so we examine how models trained on ADNI, generalize to a new population dataset from India (the NIMHANS cohort). We first benchmark our models by predicting "brain age" - the task of predicting a person's chronological age from their MRI scan and proceed to AD classification. We also evaluate the benefit of using a 3D CycleGAN approach to harmonize the imaging datasets before training the CNN models. Our experiments show that classification performance improves after harmonization in most cases, as well as better performance for dMRI as input.
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Affiliation(s)
- Tamoghna Chattopadhyay
- Imaging Genetics Center, Mark and Mary Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California, Marina del Rey, CA, United States
| | - Neha Ann Joshy
- Imaging Genetics Center, Mark and Mary Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California, Marina del Rey, CA, United States
| | - Saket S Ozarkar
- Imaging Genetics Center, Mark and Mary Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California, Marina del Rey, CA, United States
| | - Ketaki Buwa
- Imaging Genetics Center, Mark and Mary Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California, Marina del Rey, CA, United States
| | - Yixue Feng
- Imaging Genetics Center, Mark and Mary Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California, Marina del Rey, CA, United States
| | - Emily Laltoo
- Imaging Genetics Center, Mark and Mary Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California, Marina del Rey, CA, United States
| | - Sophia I Thomopoulos
- Imaging Genetics Center, Mark and Mary Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California, Marina del Rey, CA, United States
| | - Julio E Villalon
- Imaging Genetics Center, Mark and Mary Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California, Marina del Rey, CA, United States
| | - Himanshu Joshi
- Multimodal Brain Image Analysis Laboratory, National Institute of Mental Health and Neuro Sciences (NIMHANS), Bengaluru, Karnataka, India
| | - Ganesan Venkatasubramanian
- Translational Psychiatry Laboratory, National Institute of Mental Health and Neuro Sciences (NIMHANS), Bengaluru, Karnataka, India
| | - John P John
- Multimodal Brain Image Analysis Laboratory, National Institute of Mental Health and Neuro Sciences (NIMHANS), Bengaluru, Karnataka, India
| | - Paul M Thompson
- Imaging Genetics Center, Mark and Mary Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California, Marina del Rey, CA, United States
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12
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Joshi H, Sinha P, Bowers D, John JP. Dose response of transcranial near infrared light stimulation on brain functional connectivity and cognition in older adults-A randomized comparison. J Biophotonics 2024; 17:e202300215. [PMID: 37776079 DOI: 10.1002/jbio.202300215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 09/16/2023] [Accepted: 09/27/2023] [Indexed: 10/01/2023]
Abstract
Photobiomodulation, also called low-level light therapy, has been reported in animal studies to have an effect on brain activity and cognition. However, studies in humans regarding its effect on cognition and brain functional connectivity, and the required dose threshold for achieving the same have been very limited. We compared the effects of different doses of photobiomodulation (PBM) on cognition and resting state brain functional connectivity in 25 cognitively normal adults aged 55-70 years. They were randomized to a single session of the sham group, "low-dose" and "high-dose" groups receiving NIR light with transcranial fluence of 26 and 52 J/cm2 respectively, and intranasal fluence of 9 and 18 J/cm2 respectively. There was a significant increase in resting state functional connectivity of the left superior frontal gyrus (SFG) with the left planum temporale (PT), p = 0.0016, and with the left inferior frontal gyrus, pars triangularis, p = 0.0235 in the "high-dose" group only compared to the "sham" group. There was also a significant improvement in visual search and processing speed (p = 0.012) in the "high-dose" group. Replication of these findings in an adequately powered randomized sham-controlled study in healthy older adults can pave the way for clinical application of NIRL as a therapeutic modality in patients with Alzheimer's disease.
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Affiliation(s)
- Himanshu Joshi
- Multimodal Brain Image Analysis Laboratory, Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India
- Geriatric Clinic and Services, Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bengaluru, India
| | - Preeti Sinha
- Geriatric Clinic and Services, Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bengaluru, India
- Non-invasive Brain Stimulation Services, Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India
| | - Dawn Bowers
- Department of Clinical & Health Psychology, College of Public Health and Health Professions, University of Florida Health Science Center, Gainesville, Florida, USA
- Cognitive Neuroscience Laboratory, Department of Neurology, Fixel Center of Neurological Diseases, University of Florida Health Science Center, Gainesville, Florida, USA
| | - John P John
- Multimodal Brain Image Analysis Laboratory, Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India
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13
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Fernandes E Mendonça LM, Joshi AB, Bhandarkar A, Joshi H, Joshi S. Phytoconstituents from Piliostigma foveolatum (Dalzell) Thoth. leaves induce antiproliferative effect, apoptosis, and cell cycle arrest in Hop-62 cells. Nat Prod Res 2024; 38:768-772. [PMID: 37013695 DOI: 10.1080/14786419.2023.2197228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Accepted: 03/25/2023] [Indexed: 04/05/2023]
Abstract
The study evaluated the therapeutic potential of ethanolic leaf extract of Piliostigma foveolatum (Dalzell) Thoth. (EEBF), its toluene, ethylacetate, methanol soluble fractions (viz. TFBF, EFBF, MFBF), and isolated phytoconstituents against lung cancer. Four compounds were isolated from MFBF by column chromatography and preparative HPLC. Structures were elucidated by IR, 13C-NMR, 1H-NMR, mass spectroscopy and identified as Quercetin, Kaempferol, Isorhamnetin, and ß-glucogallin. EEBF and its biofractions exhibited remarkable antiproliferative activity with GI50<85µg/mL, while isolated Quercetin, Kaempferol, Isorhamnetin, and ß-Glucogallin displayed GI50 values of 56.15 ± 1.16 μ M, 68.41 ± 3.98 μ M, 55.08 ± 0.57 μ M and 58.99 ± 12.39 μ M respectively. MFBF demonstrated significant apoptotic activity with 42.24 ± 0.57% cells in early and 4.61 ± 0.88% cells in late apoptosis comparable to standard Doxorubicin. Kaempferol exhibited 23.03 ± 0.37% cells in early and 2.11 ± 0.55% cells in late apoptosis, arresting Hop-62 cells in S-phase. In silico molecular docking, revealed that isolated constituents effectively bound to the same binding site of caspase-3 as Doxorubicin, highlighting their apoptotic mode of action.
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Affiliation(s)
| | - Arun Bhimrao Joshi
- Department of Pharmacognosy and Phytochemistry, Goa College of Pharmacy, Panaji, Goa, India
| | - Anant Bhandarkar
- Department of Pharmacognosy and Phytochemistry, Goa College of Pharmacy, Panaji, Goa, India
| | - Himanshu Joshi
- Department of Pharmacology, College of Pharmacy, Graphic Era Hill University, Bhimtal Campus, Bhimtal, Uttarakhand, India
| | - Shrinivas Joshi
- Department of Pharmaceutical Chemistry, S.E.T.'s College of Pharmacy, Dharwad, Karnataka, India
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14
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Angrup A, Sharma B, Joshi H, Vig S, Handa S, Singh SR, Gupta V, Biswal M, Ray P. Role of MALDI-TOF mass spectrometry and molecular typing methods in an outbreak investigation of Pseudomonas stutzeri acute endophthalmitis post-phacoemulsification. J Hosp Infect 2024; 144:146-149. [PMID: 37918527 DOI: 10.1016/j.jhin.2023.08.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 08/22/2023] [Indexed: 11/04/2023]
Affiliation(s)
- A Angrup
- Department of Medical Microbiology, Postgraduate Institute of Medical Education and Research, Chandigarh, India.
| | - B Sharma
- Department of Medical Microbiology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - H Joshi
- Department of Medical Microbiology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - S Vig
- Department of Medical Microbiology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - S Handa
- Department of Ophthalmology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - S R Singh
- Department of Ophthalmology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - V Gupta
- Department of Ophthalmology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - M Biswal
- Department of Medical Microbiology, Postgraduate Institute of Medical Education and Research, Chandigarh, India.
| | - P Ray
- Department of Medical Microbiology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
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15
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Shen J, R D, Li Z, Oh H, Behera H, Joshi H, Kumar M, Aksimentiev A, Zeng H. Sulfur-Containing Foldamer-Based Artificial Lithium Channels. Angew Chem Int Ed Engl 2023; 62:e202305623. [PMID: 37539755 DOI: 10.1002/anie.202305623] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 07/18/2023] [Accepted: 08/02/2023] [Indexed: 08/05/2023]
Abstract
Unlike many other biologically relevant ions (Na+ , K+ , Ca2+ , Cl- , etc) and protons, whose cellular concentrations are closely regulated by highly selective channel proteins, Li+ ion is unusual in that its concentration is well tolerated over many orders of magnitude and that no lithium-specific channel proteins have so far been identified. While one naturally evolved primary pathway for Li+ ions to traverse across the cell membrane is through sodium channels by competing with Na+ ions, highly sought-after artificial lithium-transporting channels remain a major challenge to develop. Here we show that sulfur-containing organic nanotubes derived from intramolecularly H-bonded helically folded aromatic foldamers of 3.6 Å in hollow cavity diameter could facilitate highly selective and efficient transmembrane transport of Li+ ions, with high transport selectivity factors of 15.3 and 19.9 over Na+ and K+ ions, respectively.
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Affiliation(s)
- Jie Shen
- College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Deepa R
- Department of BioTechnology, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502285, Telangana, India
| | - Zhongyan Li
- College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Hyeonji Oh
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Harekrushna Behera
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Himanshu Joshi
- Department of BioTechnology, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502285, Telangana, India
| | - Manish Kumar
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Aleksei Aksimentiev
- Department of Physics and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61820, USA
| | - Huaqiang Zeng
- College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
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16
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Sharma K, Sharma M, Gupta N, Modi T, Joshi H, Shree R, Sharma A. Determining the diagnostic potential of Truenat MTB Plus for Tubercular lymphadenitis and detection of drug resistance and a comparison with GeneXpert Ultra. Tuberculosis (Edinb) 2023; 142:102379. [PMID: 37480632 DOI: 10.1016/j.tube.2023.102379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 07/11/2023] [Accepted: 07/17/2023] [Indexed: 07/24/2023]
Abstract
SETTING Tubercular lymphadenitis (TBLA), the most common form of extrapulmonary tuberculosis, is a diagnostic challenge. OBJECTIVE Truenat MTB Plus (TruPlus) along with Truenat Rif assay (TruRif) was evaluated for detection of TBLA and rifampicin resistance and compared with GeneXpert Ultra (Xpert Ultra). DESIGN 100 fine-needle aspirated specimens [50 confirmed by culture/smear/cytology, 20 clinically suspected, and 30 controls], processed in the mycobacteriology division of department of microbiology were subjected to TruPlus and TruRif, Xpert Ultra and multiplex PCR. The results of TBLA detection were compared against composite reference standard (CRS) and those of rifampicin resistance were compared against phenotypic drug susceptibility testing and rpoB gene sequencing. RESULTS In comparison to CRS, the diagnostic yield of TruPlus, Xpert Ultra and MPCR was 77.14%, 59.18% and 84.28%, respectively; with substantial agreement for TruPlus (k = 0.66) and MPCR (k = 0.76) and moderate for Xpert Ultra (k = 0.60). TruRif reported four cases as RifR and Xpert Ultra reported two. On comparing with phenotypic DST and gene sequencing, only two cases of RifR were confirmed, hence TruRif reported false-RifR in two cases. CONCLUSION TruPlus could be used as a reliable tool for diagnosing TBLA. The reporting of RifR by TruRif should be confirmed by phenotypic DST or gene sequencing.
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Affiliation(s)
- Kusum Sharma
- Department of Microbiology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Megha Sharma
- Department of Microbiology, All India Institute of Medical Sciences, Bilaspur, Himachal Pradesh, India
| | - Nalini Gupta
- Department of Cytology and Gynaecological Pathology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Tanish Modi
- Government Medical College and Hospital, Sector 32, Chandigarh, India
| | - Himanshu Joshi
- Department of Microbiology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Ritu Shree
- Department of Neurology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Aman Sharma
- Department of Internal Medicine, Postgraduate Institute of Medical Education and Research, Chandigarh, India
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17
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Sahoo S, Joshi H. Dimensions of Thyroid Cartilage Window for Medialisation Thyroplasty in Indian Population. Indian J Otolaryngol Head Neck Surg 2023; 75:1542-1545. [PMID: 37636646 PMCID: PMC10447680 DOI: 10.1007/s12070-023-03634-3] [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: 08/31/2021] [Accepted: 02/23/2023] [Indexed: 03/17/2023] Open
Abstract
To derive optimal thyroid cartilage window for medialisation thyroplasty in Indian population and comparision of the same with standard parameters including Isshiki's thyroplasty type I. Along with comparision it is also attempted to bring out difference if any, to provide a better guidelines of medialisation thyroplasty in Indian population. A total No of 52 (35 male and 17 female) cadaveric laryngeal samples (formalin fixed) taken into study. Cartilage window over thyroid lamina is created and increased gradually. Endoscopic examination of medialisation by appropriate silastic block of true vocal cord noted at each level. Relevant thyroid anatomy at window corners also taken into consideration. In Indian set up, dimensions of window required for medialisation thyroplasty are slightly lesser than the average size quoted by premier study of Isshiki when compared in male population. The window size of males which produced ideal medialisation was 12-14 mm in length and 5 mm in height. In females it was 10-11 mm in length and 4 mm in height.
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Affiliation(s)
| | - Himanshu Joshi
- Department of ENT, Military Hospital, Jabalpur, Madhya Pradesh India
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18
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Feng Y, Chandio BQ, Villalón-Reina JE, Thomopoulos SI, Joshi H, Nair G, Joshi AA, Venkatasubramanian G, John JP, Thompson PM. BundleCleaner: Unsupervised Denoising and Subsampling of Diffusion MRI-Derived Tractography Data. bioRxiv 2023:2023.08.19.553990. [PMID: 37662361 PMCID: PMC10473583 DOI: 10.1101/2023.08.19.553990] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/05/2023]
Abstract
We present BundleCleaner, an unsupervised multi-step framework that can filter, denoise and subsample bundles derived from diffusion MRI-based whole-brain tractography. Our approach considers both the global bundle structure and local streamline-wise features. We apply BundleCleaner to bundles generated from single-shell diffusion MRI data in an independent clinical sample of older adults from India using probabilistic tractography and the resulting 'cleaned' bundles can better align with the atlas bundles with reduced overreach. In a downstream tractometry analysis, we show that the cleaned bundles, represented with less than 20% of the original set of points, can robustly localize along-tract microstructural differences between 32 healthy controls and 34 participants with Alzheimer's disease ranging in age from 55 to 84 years old. Our approach can help reduce memory burden and improving computational efficiency when working with tractography data, and shows promise for large-scale multi-site tractometry.
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Affiliation(s)
- Yixue Feng
- Imaging Genetics Center, Keck School of Medicine, University of Southern California, Marina del Rey, CA, United States
| | - Bramsh Q Chandio
- Imaging Genetics Center, Keck School of Medicine, University of Southern California, Marina del Rey, CA, United States
| | - Julio E Villalón-Reina
- Imaging Genetics Center, Keck School of Medicine, University of Southern California, Marina del Rey, CA, United States
| | - Sophia I Thomopoulos
- Imaging Genetics Center, Keck School of Medicine, University of Southern California, Marina del Rey, CA, United States
| | - Himanshu Joshi
- Multimodal Brain Image Analysis Laboratory, Translational Psychiatry Laboratory, National Institute of Mental Health and Neuro Sciences, Bengaluru, Karnataka, India
| | - Gauthami Nair
- Multimodal Brain Image Analysis Laboratory, Translational Psychiatry Laboratory, National Institute of Mental Health and Neuro Sciences, Bengaluru, Karnataka, India
| | - Anand A Joshi
- Signal and Image Processing Institute, Ming Hseih dept of Electrical and Computer Engineering, University of Southern California, Los Angeles, CA, United States
| | - Ganesan Venkatasubramanian
- Multimodal Brain Image Analysis Laboratory, Translational Psychiatry Laboratory, National Institute of Mental Health and Neuro Sciences, Bengaluru, Karnataka, India
| | - John P John
- Multimodal Brain Image Analysis Laboratory, Translational Psychiatry Laboratory, National Institute of Mental Health and Neuro Sciences, Bengaluru, Karnataka, India
| | - Paul M Thompson
- Imaging Genetics Center, Keck School of Medicine, University of Southern California, Marina del Rey, CA, United States
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19
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Hu L, Ji J, Joshi H, Scott ER, Li F. Estimating the causal effects of multiple intermittent treatments with application to COVID-19. ArXiv 2023:arXiv:2109.13368v4. [PMID: 34981032 PMCID: PMC8722604] [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] [Grants] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Revised: 05/06/2022] [Indexed: 11/21/2022]
Abstract
To draw real-world evidence about the comparative effectiveness of multiple time-varying treatments on patient survival, we develop a joint marginal structural survival model and a novel weighting strategy to account for time-varying confounding and censoring. Our methods formulate complex longitudinal treatments with multiple start/stop switches as the recurrent events with discontinuous intervals of treatment eligibility. We derive the weights in continuous time to handle a complex longitudinal dataset without the need to discretize or artificially align the measurement times. We further use machine learning models designed for censored survival data with time-varying covariates and the kernel function estimator of the baseline intensity to efficiently estimate the continuous-time weights. Our simulations demonstrate that the proposed methods provide better bias reduction and nominal coverage probability when analyzing observational longitudinal survival data with irregularly spaced time intervals, compared to conventional methods that require aligned measurement time points. We apply the proposed methods to a large-scale COVID-19 dataset to estimate the causal effects of several COVID-19 treatments on the composite of in-hospital mortality and ICU admission.
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Affiliation(s)
- Liangyuan Hu
- Department of Biostatistics and Epidemiology, Rutgers University, Piscataway, NJ 08854, USA
| | - Jiayi Ji
- Department of Biostatistics and Epidemiology, Rutgers University, Piscataway, NJ 08854, USA
| | - Himanshu Joshi
- Institute for Health Care Delivery Science, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Erick R. Scott
- Kaiser Permanente Hospital Foundation, Oakland, CA 94611, USA
| | - Fan Li
- Department of Biostatitics, Yale University, New Haven, Connecticut 06510, USA
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20
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Mellgard G, Patel VG, Zhong X, Joshi H, Qin Q, Wang B, Parikh A, Jun T, Alerasool P, Garcia P, Gogerly-Moragoda M, Leiter A, Gallagher EJ, Oh WK, Galsky MD, Tsao CK. Effect of concurrent beta-blocker use in patients receiving immune checkpoint inhibitors for advanced solid tumors. J Cancer Res Clin Oncol 2023; 149:2833-2841. [PMID: 35788726 PMCID: PMC10739778 DOI: 10.1007/s00432-022-04159-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 06/16/2022] [Indexed: 10/17/2022]
Abstract
PURPOSE Stress-induced adrenergic signaling can suppress the immune system. In animal models, pharmacological beta-blockade stimulates CD8 + T-cell activity and improves clinical activity of immune checkpoint blockade (ICB) in inhibiting tumor growth. Herein, we investigated the effect of BB on clinical outcomes of patients receiving ICB in advanced solid tumors. METHODS We retrospectively evaluated patients with solid tumors treated with ICB at our institution from January 1, 2011 to April 28, 2017. The primary clinical outcome was disease control. Secondary clinical outcomes were overall survival (OS), and duration of therapy (DoT). The primary predictor was use of BB. Association between disease control status and BB use was assessed in univariable and multivariable logistic regression. OS was calculated using hazard ratios of BB-recipient patients vs. BB non-recipient patients via Cox proportional hazards regression models. All tests were two-sided at a significance level of 0.05. RESULTS Of 339 identified patients receiving ICB, 109 (32%) also received BB. In covariate-adjusted analysis, odds of disease control were significantly higher among BB recipients compared to BB-non-recipients (2.79; [1.54-5.03]; P = 0.001). While we did not observe significant association of OS with the use of BB overall, significant association with better OS was observed for the urothelial carcinoma cohort (HR: 0.24; [0.09, 0.62]; P = 0.0031). CONCLUSIONS Concurrent use of BB may enhance the clinical activity of ICB and influence overall survival, particularly in patients with urothelial carcinoma. Our findings warrant further investigation to understand the interaction of beta adrenergic signaling and antitumor immune activity and explore a combination strategy.
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Affiliation(s)
- George Mellgard
- Division of Hematology and Medical Oncology, Department of Medicine, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, Box 1128, New York, NY, 10029, USA
| | - Vaibhav G Patel
- Division of Hematology and Medical Oncology, Department of Medicine, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, Box 1128, New York, NY, 10029, USA.
| | - Xiaobo Zhong
- Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Himanshu Joshi
- Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Qian Qin
- Division of Hematology and Medical Oncology, Department of Medicine, University of Texas Southwestern, Dallas, USA
| | - Bo Wang
- Division of Hematology and Medical Oncology, Department of Medicine, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, Box 1128, New York, NY, 10029, USA
| | - Anish Parikh
- Division of Hematology and Medical Oncology, Department of Medicine, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, Box 1128, New York, NY, 10029, USA
- Division of Medical Oncology, Department of Medicine, The Ohio State University Comprehensive Cancer Center-James Cancer Hospital, Columbus, OH, USA
| | | | | | - Philip Garcia
- Division of Hematology and Medical Oncology, Department of Medicine, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, Box 1128, New York, NY, 10029, USA
| | - Mahalya Gogerly-Moragoda
- Division of Hematology and Medical Oncology, Department of Medicine, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, Box 1128, New York, NY, 10029, USA
| | - Amanda Leiter
- Division of Endocrinology, Diabetes and Bone Disease, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Emily J Gallagher
- Division of Endocrinology, Diabetes and Bone Disease, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, USA
- Tisch Cancer Institute at Mount Sinai, Icahn School of Medicine at Mount Sinai, New York, USA
| | - William K Oh
- Division of Hematology and Medical Oncology, Department of Medicine, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, Box 1128, New York, NY, 10029, USA
- Tisch Cancer Institute at Mount Sinai, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Matthew D Galsky
- Division of Hematology and Medical Oncology, Department of Medicine, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, Box 1128, New York, NY, 10029, USA
- Tisch Cancer Institute at Mount Sinai, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Che-Kai Tsao
- Division of Hematology and Medical Oncology, Department of Medicine, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, Box 1128, New York, NY, 10029, USA
- Tisch Cancer Institute at Mount Sinai, Icahn School of Medicine at Mount Sinai, New York, USA
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21
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Davies J, Wheeler JMD, Joshi H, Fearnhead NS, Powar M. Comment on Ecker et al., Techniques in Coloproctology 27:339-342, 2023. Tech Coloproctol 2023; 27:519. [PMID: 37004659 DOI: 10.1007/s10151-023-02795-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 03/23/2023] [Indexed: 04/04/2023]
Affiliation(s)
- J Davies
- Cambridge Colorectal Unit, Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK.
- University of Cambridge, Cambridge, UK.
| | - J M D Wheeler
- Cambridge Colorectal Unit, Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - H Joshi
- Cambridge Colorectal Unit, Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - N S Fearnhead
- Cambridge Colorectal Unit, Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - M Powar
- Cambridge Colorectal Unit, Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
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22
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Prajapati A, Srivastava A, Sankaranarayanan SA, Pebam M, Buddhiraju HS, Patra P, Yadav P, Joshi H, Rengan AK. High-Affinity DNA Nanomatrix: A Platform Technology for Synergistic Drug Delivery and Photothermal Therapy. ACS Macro Lett 2023; 12:255-262. [PMID: 36723076 DOI: 10.1021/acsmacrolett.2c00642] [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: 02/02/2023]
Abstract
With the advent of nucleosome/nucleotide intercalating drugs, DNA-based nanocarriers have recently gained impetus. However, most of the newly proposed DNA nanosystems are rather complex, thereby having low scalability and translatability. In this study, we propose a simple DNA nanomatrix core encapsulated within a chitosan shell, which is expected to enhance the encapsulation efficiency of intercalating drugs. This has been demonstrated using proflavine hemisulfate (PfHS), a model intercalating agent that shows improved ROS generation, among other anticancerous properties. The release of the drug from the nanomatrix is triggered by providing a heat trigger using IR-792 perchlorate, a known NIR photothermal sensitizer.
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Affiliation(s)
- Akshit Prajapati
- Department of Biomedical Engineering, Indian institute of Technology Hyderabad, Kandi, Sangareddy, Telangana 502284, India
| | - Aditya Srivastava
- Department of Biomedical Engineering, Indian institute of Technology Hyderabad, Kandi, Sangareddy, Telangana 502284, India
| | - Sri Amruthaa Sankaranarayanan
- Department of Biomedical Engineering, Indian institute of Technology Hyderabad, Kandi, Sangareddy, Telangana 502284, India
| | - Monika Pebam
- Department of Biomedical Engineering, Indian institute of Technology Hyderabad, Kandi, Sangareddy, Telangana 502284, India
| | - Hima Sree Buddhiraju
- Department of Biomedical Engineering, Indian institute of Technology Hyderabad, Kandi, Sangareddy, Telangana 502284, India
| | - Paloma Patra
- Department of Biomedical Engineering, Indian institute of Technology Hyderabad, Kandi, Sangareddy, Telangana 502284, India
| | - Priyanka Yadav
- Department of Biotechnology, Indian institute of Technology Hyderabad, Kandi, Sangareddy, Telangana 502284, India
| | - Himanshu Joshi
- Department of Biotechnology, Indian institute of Technology Hyderabad, Kandi, Sangareddy, Telangana 502284, India
| | - Aravind Kumar Rengan
- Department of Biomedical Engineering, Indian institute of Technology Hyderabad, Kandi, Sangareddy, Telangana 502284, India
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23
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Harne KR, Joshi H, Wankhade RL. Estimation of evapotranspiration in constructed wetlands under diverse climatic conditions. Environ Monit Assess 2023; 195:370. [PMID: 36750510 DOI: 10.1007/s10661-023-10928-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 01/06/2023] [Indexed: 06/18/2023]
Abstract
Constructed wetlands as a form of phytoremediation have proven to be an effective wastewater treatment method. It is a simple, economical, and environmentally friendly method compared to conventional wastewater treatments. In addition to wastewater treatment, constructed wetlands have been used to study hydrometeorological parameters such as evaporation in the vicinity, evapotranspiration (ET), and wastewater loss at a constructed wetland pilot plant at the Uttarakhand Jal Nigam sewage treatment plant at Haridwar. The relation between standard pan evaporation (PE) and ET occurring at the surface of a wetland bed was established at the constructed wetland site. To make the process of measuring ET easier, the relation between PE and ET has been established by the equation [Formula: see text]. The percent loss of water through ET vis-à-vis PE during the summer, post-monsoon, and winter seasons has been estimated to be 21.6%, 6.47%, and 1.16%, respectively. The quantity of wastewater lost in the summer, post-monsoon, and winter seasons was 53.06 m3, 13.87 m3, and 2.79 m3, respectively. The total annual wastewater loss through the pilot-scale constructed wetlands was 69.72 m3. The loss of wastewater per square meter of the planned area of constructed wetland in the temperate zone was estimated as 3.46 m3 per m2 of constructed wetland. ET through wetlands enhanced the circulation of water in the hydrological cycle; therefore, this treatment has been proven to be an environmentally friendly method of wastewater treatment.
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Affiliation(s)
- Kailash Rajaram Harne
- Department of Civil Engineering, Netaji Subhas University of Technology, New Delhi, Delhi, India.
| | - Himanshu Joshi
- Department of Hydrology, IIT Roorkee, Roorkee, Uttarakhand, India
| | - Rajan L Wankhade
- Department of Civil Engineering, Netaji Subhas University of Technology, New Delhi, Delhi, India
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24
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Dawes R, Bournazos AM, Bryen SJ, Bommireddipalli S, Marchant RG, Joshi H, Cooper ST. SpliceVault predicts the precise nature of variant-associated mis-splicing. Nat Genet 2023; 55:324-332. [PMID: 36747048 PMCID: PMC9925382 DOI: 10.1038/s41588-022-01293-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 12/15/2022] [Indexed: 02/08/2023]
Abstract
Even for essential splice-site variants that are almost guaranteed to alter mRNA splicing, no current method can reliably predict whether exon-skipping, cryptic activation or multiple events will result, greatly complicating clinical interpretation of pathogenicity. Strikingly, ranking the four most common unannotated splicing events across 335,663 reference RNA-sequencing (RNA-seq) samples (300K-RNA Top-4) predicts the nature of variant-associated mis-splicing with 92% sensitivity. The 300K-RNA Top-4 events correctly identify 96% of exon-skipping events and 86% of cryptic splice sites for 140 clinical cases subject to RNA testing, showing higher sensitivity and positive predictive value than SpliceAI. Notably, RNA re-analyses showed we had missed 300K-RNA Top-4 events for several clinical cases tested before the development of this empirical predictive method. Simply, mis-splicing events that happen around a splice site in RNA-seq data are those most likely to be activated by a splice-site variant. The SpliceVault web portal allows users easy access to 300K-RNA for informed splice-site variant interpretation and classification.
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Affiliation(s)
- Ruebena Dawes
- Kids Neuroscience Centre, Kids Research, Children's Hospital at Westmead, Sydney, New South Wales, Australia
- Discipline of Child and Adolescent Health, Faculty of Health and Medicine, University of Sydney, Sydney, New South Wales, Australia
- The Children's Medical Research Institute, Sydney, New South Wales, Australia
| | - Adam M Bournazos
- Kids Neuroscience Centre, Kids Research, Children's Hospital at Westmead, Sydney, New South Wales, Australia
- Discipline of Child and Adolescent Health, Faculty of Health and Medicine, University of Sydney, Sydney, New South Wales, Australia
- The Children's Medical Research Institute, Sydney, New South Wales, Australia
| | - Samantha J Bryen
- Kids Neuroscience Centre, Kids Research, Children's Hospital at Westmead, Sydney, New South Wales, Australia
- Discipline of Child and Adolescent Health, Faculty of Health and Medicine, University of Sydney, Sydney, New South Wales, Australia
- The Children's Medical Research Institute, Sydney, New South Wales, Australia
| | - Shobhana Bommireddipalli
- Kids Neuroscience Centre, Kids Research, Children's Hospital at Westmead, Sydney, New South Wales, Australia
- The Children's Medical Research Institute, Sydney, New South Wales, Australia
| | - Rhett G Marchant
- Kids Neuroscience Centre, Kids Research, Children's Hospital at Westmead, Sydney, New South Wales, Australia
- Discipline of Child and Adolescent Health, Faculty of Health and Medicine, University of Sydney, Sydney, New South Wales, Australia
- The Children's Medical Research Institute, Sydney, New South Wales, Australia
| | - Himanshu Joshi
- Kids Neuroscience Centre, Kids Research, Children's Hospital at Westmead, Sydney, New South Wales, Australia
- The Children's Medical Research Institute, Sydney, New South Wales, Australia
| | - Sandra T Cooper
- Kids Neuroscience Centre, Kids Research, Children's Hospital at Westmead, Sydney, New South Wales, Australia.
- Discipline of Child and Adolescent Health, Faculty of Health and Medicine, University of Sydney, Sydney, New South Wales, Australia.
- The Children's Medical Research Institute, Sydney, New South Wales, Australia.
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25
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Lee J, Petrosyan S, Khobragade P, Banerjee J, Chien S, Weerman B, Gross A, Hu P, Smith JA, Zhao W, Aksman L, Jain U, Shanthi GS, Kurup R, Raman A, Chakrabarti SS, Gambhir IS, Varghese M, John JP, Joshi H, Koul PA, Goswami D, Talukdar A, Mohanty RR, Yadati YSR, Padmaja M, Sankhe L, Rajguru C, Gupta M, Kumar G, Dhar M, Jovicich J, Ganna A, Ganguli M, Chatterjee P, Singhal S, Bansal R, Bajpai S, Desai G, Bhatankar S, Rao AR, Sivakumar PT, Muliyala KP, Sinha P, Loganathan S, Meijer E, Angrisani M, Kim JK, Dey S, Arokiasamy P, Bloom DE, Toga AW, Kardia SLR, Langa K, Crimmins EM, Dey AB. Deep phenotyping and genomic data from a nationally representative study on dementia in India. Sci Data 2023; 10:45. [PMID: 36670106 PMCID: PMC9852797 DOI: 10.1038/s41597-023-01941-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 01/06/2023] [Indexed: 01/21/2023] Open
Abstract
The Harmonized Diagnostic Assessment of Dementia for the Longitudinal Aging Study in India (LASI-DAD) is a nationally representative in-depth study of cognitive aging and dementia. We present a publicly available dataset of harmonized cognitive measures of 4,096 adults 60 years of age and older in India, collected across 18 states and union territories. Blood samples were obtained to carry out whole blood and serum-based assays. Results are included in a venous blood specimen datafile that can be linked to the Harmonized LASI-DAD dataset. A global screening array of 960 LASI-DAD respondents is also publicly available for download, in addition to neuroimaging data on 137 LASI-DAD participants. Altogether, these datasets provide comprehensive information on older adults in India that allow researchers to further understand risk factors associated with cognitive impairment and dementia.
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Affiliation(s)
- Jinkook Lee
- Center for Economic and Social Research, University of Southern California, Los Angeles, CA, USA.
| | - Sarah Petrosyan
- Center for Economic and Social Research, University of Southern California, Los Angeles, CA, USA
| | - Pranali Khobragade
- Center for Economic and Social Research, University of Southern California, Los Angeles, CA, USA
| | - Joyita Banerjee
- Department of Geriatric Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Sandy Chien
- Center for Economic and Social Research, University of Southern California, Los Angeles, CA, USA
| | - Bas Weerman
- Center for Economic and Social Research, University of Southern California, Los Angeles, CA, USA
| | - Alden Gross
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Peifeng Hu
- Division of Geriatric Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Jennifer A Smith
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - Wei Zhao
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - Leon Aksman
- Laboratory of Neuro Imaging, USC Stevens Neuroimaging and Informatics Institute, University of Southern California, Los Angeles, California, USA
| | - Urvashi Jain
- Department of Economics, Finance and Real Estate, University of South Alabama, Mobile, USA
| | - G S Shanthi
- Department of Geriatric Medicine, Madras Medical College, Chennai, India
| | - Ravi Kurup
- Department of Medicine, Government Medical College, Thiruvananthapuram, India
| | - Aruna Raman
- Department of Medicine, Government Medical College, Thiruvananthapuram, India
| | - Sankha Shubhra Chakrabarti
- Department of Geriatric Medicine, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - Indrajeet Singh Gambhir
- Department of Geriatric Medicine, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - Mathew Varghese
- Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bengaluru, India
| | - John P John
- Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bengaluru, India
| | - Himanshu Joshi
- Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bengaluru, India
| | - Parvaiz A Koul
- Department of Internal and Pulmonary Medicine, Sher-e-Kashmir Institute of Medical Sciences, Srinagar, India
| | | | | | - Rashmi Ranjan Mohanty
- Department of Medicine, All India Institute of Medical Sciences, Bhubaneshwar, India
| | | | - Mekala Padmaja
- Department of Medicine, Nizam's Institute of Medical Sciences, Hyderabad, India
| | - Lalit Sankhe
- Department of Community Medicine, Grant Medical College and J.J. Hospital, Mumbai, India
| | - Chhaya Rajguru
- Department of Community Medicine, Grant Medical College and J.J. Hospital, Mumbai, India
| | - Monica Gupta
- Department of General Medicine, Government Medical College and Hospital, Chandigarh, India
| | - Govind Kumar
- Department of Medicine Indira Gandhi Institute of Medical Sciences, Patna, Bihar, India
| | - Minakshi Dhar
- Department of Medicine, All India Institute of Medical Sciences, Rishikesh, India
| | - Jorge Jovicich
- Center for Mind/Brain Sciences, University of Trento, Rovereto, Italy
| | - Andrea Ganna
- Finnish Institute of Molecular Medicine, University of Helsinki, Helsinki, Finland
| | - Mary Ganguli
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA, USA
| | - Prasun Chatterjee
- Department of Geriatric Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Sunny Singhal
- Department of Geriatric Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Rishav Bansal
- Department of Geriatric Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Swati Bajpai
- Department of Geriatric Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Gaurav Desai
- Department of Geriatric Medicine, All India Institute of Medical Sciences, New Delhi, India
| | | | - Abhijith R Rao
- Department of Geriatric Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Palanimuthu T Sivakumar
- Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bengaluru, India
| | - Krishna Prasad Muliyala
- Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bengaluru, India
| | - Preeti Sinha
- Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bengaluru, India
| | - Santosh Loganathan
- Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bengaluru, India
| | - Erik Meijer
- Center for Economic and Social Research, University of Southern California, Los Angeles, CA, USA
| | - Marco Angrisani
- Center for Economic and Social Research, University of Southern California, Los Angeles, CA, USA
| | - Jung Ki Kim
- School of Gerontology, University of Southern California, Los Angeles, CA, USA
| | - Sharmistha Dey
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi, India
| | - Perianayagam Arokiasamy
- Department of Development Studies, International Institute for Population Sciences, Mumbai, India
| | - David E Bloom
- Department of Global Health and Population, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Arthur W Toga
- Laboratory of Neuro Imaging, USC Stevens Neuroimaging and Informatics Institute, University of Southern California, Los Angeles, California, USA
| | - Sharon L R Kardia
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - Kenneth Langa
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Eileen M Crimmins
- School of Gerontology, University of Southern California, Los Angeles, CA, USA
| | - Aparajit B Dey
- Department of Geriatric Medicine, All India Institute of Medical Sciences, New Delhi, India
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26
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Aghilesh K, Kumar A, Agarwal S, Garg MC, Joshi H. Use of artificial intelligence for optimizing biosorption of textile wastewater using agricultural waste. Environ Technol 2023; 44:22-34. [PMID: 34319862 DOI: 10.1080/09593330.2021.1961874] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 07/18/2021] [Indexed: 06/13/2023]
Abstract
Most of the dyes are toxic and non-biodegradable in textile industry wastewaters. Therefore, removal of textile dye using agriculture waste becomes crucial for the environment. This can be accomplished by the biosorption process which is the passive uptake of pollutants by agricultural waste. In this study, Response Surface Methodology (RSM), Artificial Neural Network (ANN) and Adaptive Neuro-Fuzzy Inference System (ANFIS) were used to obtain optimum conditions for Methylene Blue (MB) removal using sugarcane bagasse and peanut hulls as low-cost agricultural waste. The experimental design was carried out to study the effect of temperature, pH, biosorbent amount and dye concentration. The maximum MB dye removal considering the effect of total dissolved solids from aqueous solutions of 74.49% and 67.99% by sugarcane bagasse and peanut hulls, respectively. The models specify that they could predict biosorption with high accuracy having R2-value above 0.9. Statistical studies for RSM, ANFIS and ANN models were compared. Further, the models were optimized for maximum dye removal was at 1.21 g of biosorbent, pH 5.24, 31.24 mg/L MB concentration, 22.29°C of dye solution using sugarcane bagasse and at 1.37 g of biosorbent, pH 5.77, 36.7 mg/L MB concentration, 26.8°C of dye solution using peanut hulls. Additionally, Fourier Transform Infra-Red (FTIR) spectral analysis was also carried out to confirm the biosorption.
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Affiliation(s)
- K Aghilesh
- Amity Institute of Environmental Sciences, Amity University, Noida, India
| | - Ajay Kumar
- Department of Hydrology, Indian Institute of Technology Roorkee, Roorkee, India
| | - Smriti Agarwal
- Department of Electronics and Communication Engineering, MNNIT Allahabad, Prayagraj, India
| | - Manoj Chandra Garg
- Amity Institute of Environmental Sciences, Amity University, Noida, India
| | - Himanshu Joshi
- Department of Hydrology, Indian Institute of Technology Roorkee, Roorkee, India
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27
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Joshi H, Li CY, Aksimentiev A. All-Atom Molecular Dynamics Simulations of Membrane-Spanning DNA Origami Nanopores. Methods Mol Biol 2023; 2639:113-128. [PMID: 37166714 DOI: 10.1007/978-1-0716-3028-0_7] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Building on the recent technological advances, all-atom molecular dynamics (MD) simulations have become an indispensable tool to study the molecular behavior at nanoscale. Molecular simulations have been used to characterize the structure, dynamics, and mechanical and electrical properties of DNA origami objects. In this chapter we describe a method to build all-atom model of lipid-spanning DNA origami nanopores and perform molecular dynamics simulations in explicit electrolyte solutions.
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Affiliation(s)
- Himanshu Joshi
- Department of Physics and Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, USA
- Department of Biotechnology, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana, India
| | - Chen-Yu Li
- Department of Physics and Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - Aleksei Aksimentiev
- Department of Physics and Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, USA.
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Pedraza AM, Parekh S, Joshi H, Grauer R, Wagaskar V, Zuluaga L, Gupta R, Barthe F, Nasri J, Pandav K, Patel D, Gorin MA, Menon M, Tewari AK. Side-specific, Microultrasound-based Nomogram for the Prediction of Extracapsular Extension in Prostate Cancer. EUR UROL SUPPL 2022; 48:72-81. [PMID: 36743400 PMCID: PMC9895764 DOI: 10.1016/j.euros.2022.12.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/01/2022] [Indexed: 12/29/2022] Open
Abstract
Background Prediction of extracapsular extension (ECE) is essential to achieve a balance between oncologic resection and neural tissue preservation. Microultrasound (MUS) is an attractive alternative to multiparametric magnetic resonance imaging (mpMRI) in the staging scenario. Objective To create a side-specific nomogram integrating clinicopathologic parameters and MUS findings to predict ipsilateral ECE and guide nerve sparing. Design setting and participants Prospective data were collected from consecutive patients who underwent robotic-assisted radical prostatectomy from June 2021 to May 2022 and had preoperative MUS and mpMRI. A total of 391 patients and 612 lobes were included in the analysis. Outcome measurements and statistical analysis ECE on surgical pathology was the primary outcome. Multivariate regression analyses were carried out to identify predictors for ECE. The resultant multivariable model's performance was visualized using the receiver-operating characteristic curve. A nomogram was developed based on the coefficients of the logit function for the MUS-based model. A decision curve analysis (DCA) was performed to assess clinical utility. Results and limitations The areas under the receiver-operating characteristic curve (AUCs) of the MUS-based model were 81.4% and 80.9% (95% confidence interval [CI] 75.6, 84.6) after internal validation. The AUC of the mpMRI-model was also 80.9% (95% CI 77.2, 85.7). The DCA demonstrated the net clinical benefit of the MUS-based nomogram and its superiority compared with MUS and MRI alone for detecting ECE. Limitations of our study included its sample size and moderate inter-reader agreement. Conclusions We developed a side-specific nomogram to predict ECE based on clinicopathologic variables and MUS findings. Its performance was comparable with that of a mpMRI-based model. External validation and prospective trials are required to corroborate our results. Patient summary The integration of clinical parameters and microultrasound can predict extracapsular extension with similar results to models based on magnetic resonance imaging findings. This can be useful for tailoring the preservation of nerves during surgery.
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Affiliation(s)
- Adriana M. Pedraza
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York City, NY, USA.,Corresponding authors at: Department of Urology, Icahn School of Medicine at Mount Sinai, New York City, NY 10029, USA. Tel. +1 2122416500
| | - Sneha Parekh
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York City, NY, USA
| | - Himanshu Joshi
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York City, NY, USA.,Institute for Healthcare Delivery Science, Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Ralph Grauer
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York City, NY, USA
| | - Vinayak Wagaskar
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York City, NY, USA
| | - Laura Zuluaga
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York City, NY, USA
| | - Raghav Gupta
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York City, NY, USA
| | - Flora Barthe
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York City, NY, USA
| | - Jordan Nasri
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York City, NY, USA
| | - Krunal Pandav
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York City, NY, USA
| | - Dhruti Patel
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York City, NY, USA
| | - Michael A. Gorin
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York City, NY, USA
| | - Mani Menon
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York City, NY, USA
| | - Ashutosh K. Tewari
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York City, NY, USA.,Corresponding authors at: Department of Urology, Icahn School of Medicine at Mount Sinai, New York City, NY 10029, USA. Tel. +1 2122416500
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Sharma P, Joshi H, Srivastava VC, Singh S, Lo SL. Treatment of biologically treated distillery spent wash employing electrocoagulation and reverse-osmosis treatment train. Environ Technol 2022; 43:4257-4268. [PMID: 34152251 DOI: 10.1080/09593330.2021.1946596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Accepted: 06/14/2021] [Indexed: 06/13/2023]
Abstract
In the present study, electro-coagulation (EC) with stainless steel (SS) electrodes has been used as a pretreatment process before the reverse osmosis (RO) for the biologically treated distillery spent wash. The optimized operating parameters (pH, time, current, and electrode distance) for the EC process were obtained from the previous study. EC treated wastewater was further used as a feed for the RO system. RO membrane system operating parameters (pH, temperature, and trans-membrane pressure) were optimized by employing response surface methodology. Optimized conditions for the RO process were found to be: pH (pHo): 6.12; temperature (T): 20°C and trans-membrane pressure (TMP): 45.7 bar. The combined (EC-RO) process showed 98%, 99.2%, and 98.5% of COD, color, and TDS removal, respectively, with permeate flux of 40.5 L/m2/h (EC-RO). Experimental results indicated that EC followed by RO could be used as an additional step for biologically treated spent wash treatment to improve the treated effluent quality and membrane life. Results also revealed that the techno-economic performance of combined (EC-RO) treatment in terms of total annual water production is more efficient and economical than RO alone.
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Affiliation(s)
- Pinki Sharma
- Department of Hydrology, Indian Institute of Technology Roorkee, Roorkee, India
| | - Himanshu Joshi
- Department of Hydrology, Indian Institute of Technology Roorkee, Roorkee, India
| | | | - Seema Singh
- Graduate Institute of Environmental Engineering, National Taiwan University, Taipei, Taiwan, ROC
| | - Shang-Lien Lo
- Graduate Institute of Environmental Engineering, National Taiwan University, Taipei, Taiwan, ROC
- Water Innovation, Low Carbon and Environmental Sustainability Research Center, National Taiwan University, Taipei, Taiwan
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Bryen SJ, Yuen M, Joshi H, Dawes R, Zhang K, Lu JK, Jones KJ, Liang C, Wong WK, Peduto AJ, Waddell LB, Evesson FJ, Cooper ST. Prevalence, parameters, and pathogenic mechanisms for splice-altering acceptor variants that disrupt the AG exclusion zone. Human Genetics and Genomics Advances 2022; 3:100125. [PMID: 35847480 PMCID: PMC9284458 DOI: 10.1016/j.xhgg.2022.100125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 06/19/2022] [Indexed: 10/26/2022] Open
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Ghosh A, Paul P, Shaw D, Joshi H, Singh S, Chakrabarti A, Rudramurthy SM, Kaur H. S5.1d Mechanisms of azole antifungal resistance in clinical isolates of Candida tropicalis. Med Mycol 2022. [PMCID: PMC9511635 DOI: 10.1093/mmy/myac072.s5.1d] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
S5.1 Antifungal resistance, September 22, 2022, 3:00 PM - 4:30 PM
Objectives
In tropical countries, the azole resistance in Candida tropicalis is on the rise. There are limited studies available regarding the azole resistance mechanisms in C. tropicalis. This study was designed to understand the molecular mechanisms of azole resistance in C. tropicalis by using genetic and bioinformatics approaches.
Methods
A total of 32 azole-resistant (R) and 10 azole-susceptible (S) clinical isolates of C. tropicalis were included in this study. All the isolates were subjected to complete gene sequencing of azole target genes including ERG11 to analyze the mutations which could lead the azole resistance. Four fragments were amplified, sequenced, and aligned to get full-length ERG11 gene. Inducible expression analysis of 17 other genes potentially associated with azole resistance was also evaluated. Homology modeling and molecular docking analysis were performed to study the effect of amino acid alterations in mediating azole resistance.
Results
Of the 32 resistant isolates, 12 (37.5%) showed A395T and C461T mutations in the ERG11 gene. The mean overexpression of CDR1, CDR3, TAC1, ERG1, ERG2, ERG3, ERG11, UPC2, and MKC1 in resistant isolates without mutation (R-WTM) was significantly higher (P <.05) than those with mutation (R-WM) and the sensitive isolates (3.2-11 vs. 0.2-2.5, and 0.3-2.2 folds, respectively). Although the R-WTM and R-WM had higher (P <.05) CDR2 and MRR1 expression compared to S isolates, noticeable variation was not seen among the other genes. Protein homology modeling and molecular docking revealed that the mutations in the ERG11 gene were responsible for structural alteration and low binding efficiency between ERG11p and ligands. Isolates with ERG11 mutations also presented A220C in ERG1 and together T503C, G751A mutations in UPC2.
Conclusions
Nonsynonymous mutations in the ERG11 gene and coordinated overexpression of various genes including different transporters, ergosterol biosynthesis pathway, transcription factors, and stress-responsive genes are associated with azole resistance in clinical isolates of C. tropicalis.
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Li Y, Maffeo C, Joshi H, Aksimentiev A, Ménard B, Schulman R. Leakless end-to-end transport of small molecules through micron-length DNA nanochannels. Sci Adv 2022; 8:eabq4834. [PMID: 36070388 PMCID: PMC9451144 DOI: 10.1126/sciadv.abq4834] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 07/21/2022] [Indexed: 06/15/2023]
Abstract
Designed and engineered protein and DNA nanopores can be used to sense and characterize single molecules and control transmembrane transport of molecular species. However, designed biomolecular pores are less than 100 nm in length and are used primarily for transport across lipid membranes. Nanochannels that span longer distances could be used as conduits for molecules between nonadjacent compartments or cells. Here, we design micrometer-long, 7-nm-diameter DNA nanochannels that small molecules can traverse according to the laws of continuum diffusion. Binding DNA origami caps to channel ends eliminates transport and demonstrates that molecules diffuse from one channel end to the other rather than permeating through channel walls. These micrometer-length nanochannels can also grow, form interconnects, and interface with living cells. This work thus shows how to construct multifunctional, dynamic agents that control molecular transport, opening ways of studying intercellular signaling and modulating molecular transport between synthetic and living cells.
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Affiliation(s)
- Yi Li
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Christopher Maffeo
- Department of Physics, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
| | - Himanshu Joshi
- Department of Physics, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
| | - Aleksei Aksimentiev
- Department of Physics, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
| | - Brice Ménard
- Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Rebecca Schulman
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
- Department of Computer Science, Johns Hopkins University, Baltimore, MD 21218, USA
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Hazra M, Joshi H, Williams JB, Watts JEM. Antibiotics and antibiotic resistant bacteria/genes in urban wastewater: A comparison of their fate in conventional treatment systems and constructed wetlands. Chemosphere 2022; 303:135148. [PMID: 35640694 DOI: 10.1016/j.chemosphere.2022.135148] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [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: 02/14/2022] [Revised: 05/09/2022] [Accepted: 05/25/2022] [Indexed: 06/15/2023]
Abstract
There is a growing concern that the use and misuse of antibiotics can increase the detection of antibiotic resistant genes (ARGs) in wastewater. Conventional wastewater treatment plants provide a pathway for ARGs and antibiotic resistant bacteria (ARB) to be released into natural water bodies. Research has indicated that conventional primary and secondary treatment systems can reduce ARGs/ARB to varying degrees. However, in developing/low-income countries, only 8-28% of wastewater is treated via conventional treatment processes, resulting in the environment being exposed to high levels of ARGs, ARB and pharmaceuticals in raw sewage. The use of constructed wetlands (CWs) has the potential to provide a low-cost solution for wastewater treatment, with respect to removal of nutrients, pathogens, ARB/ARGs either as a standalone treatment process or when integrated with conventional treatment systems. Recently, CWs have also been employed for the reduction of antibiotic residues, pharmaceuticals, and emerging contaminants. Given the benefits of ARG removal, low cost of construction, maintenance, energy requirement, and performance efficiencies, CWs offer a promising solution for developing/low-income countries. This review promotes a better understanding of the performance efficiency of treatment technologies (both conventional systems and CWs) for the reduction of antibiotics and ARGs/ARB from wastewater and explores workable alternatives.
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Affiliation(s)
- Moushumi Hazra
- Department of Hydrology, Indian Institute of Technology, Roorkee, Uttarakhand, India.
| | - Himanshu Joshi
- Department of Hydrology, Indian Institute of Technology, Roorkee, Uttarakhand, India
| | - John B Williams
- School of Civil Engineering and Surveying, University of Portsmouth, United Kingdom
| | - Joy E M Watts
- School of Biological Sciences, University of Portsmouth, United Kingdom
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Besculides M, Mazumdar M, Phlegar S, Freeman R, Wilson S, Joshi H, Kia A, Gorbenko K. Implementing a Machine Learning Screening Tool for Malnutrition: Insights from Qualitative Research Applicable to Other ML-Based CDSS (Preprint). JMIR Form Res 2022. [PMID: 37440303 PMCID: PMC10375393 DOI: 10.2196/42262] [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: 02/01/2023] Open
Abstract
BACKGROUND Machine learning (ML)-based clinical decision support systems (CDSS) are popular in clinical practice settings but are often criticized for being limited in usability, interpretability, and effectiveness. Evaluating the implementation of ML-based CDSS is critical to ensure CDSS is acceptable and useful to clinicians and helps them deliver high-quality health care. Malnutrition is a common and underdiagnosed condition among hospital patients, which can have serious adverse impacts. Early identification and treatment of malnutrition are important. OBJECTIVE This study aims to evaluate the implementation of an ML tool, Malnutrition Universal Screening Tool (MUST)-Plus, that predicts hospital patients at high risk for malnutrition and identify best implementation practices applicable to this and other ML-based CDSS. METHODS We conducted a qualitative postimplementation evaluation using in-depth interviews with registered dietitians (RDs) who use MUST-Plus output in their everyday work. After coding the data, we mapped emergent themes onto select domains of the nonadoption, abandonment, scale-up, spread, and sustainability (NASSS) framework. RESULTS We interviewed 17 of the 24 RDs approached (71%), representing 37% of those who use MUST-Plus output. Several themes emerged: (1) enhancements to the tool were made to improve accuracy and usability; (2) MUST-Plus helped identify patients that would not otherwise be seen; perceived usefulness was highest in the original site; (3) perceived accuracy varied by respondent and site; (4) RDs valued autonomy in prioritizing patients; (5) depth of tool understanding varied by hospital and level; (6) MUST-Plus was integrated into workflows and electronic health records; and (7) RDs expressed a desire to eventually have 1 automated screener. CONCLUSIONS Our findings suggest that continuous involvement of stakeholders at new sites given staff turnover is vital to ensure buy-in. Qualitative research can help identify the potential bias of ML tools and should be widely used to ensure health equity. Ongoing collaboration among CDSS developers, data scientists, and clinical providers may help refine CDSS for optimal use and improve the acceptability of CDSS in the clinical context.
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Joshi H, Prakash MK. Using Atomistic Simulations to Explore the Role of Methylation and ATP in Chemotaxis Signal Transduction. ACS Omega 2022; 7:27886-27895. [PMID: 35990422 PMCID: PMC9386827 DOI: 10.1021/acsomega.2c00792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 07/22/2022] [Indexed: 06/15/2023]
Abstract
A bacterial chemotaxis mechanism is activated when nutrients bind to surface receptors. The sequence of intra- and interprotein events in this signal cascade from the receptors to the eventual molecular motors has been clearly identified. However, the atomistic details remain elusive, as in general may be expected of intraprotein signal transduction pathways, especially when fibrillar proteins are involved. We performed atomistic calculations of the methyl accepting chemoprotein (MCP)-CheA-CheW multidomain complex from Escherichia coli, simulating the methylated and unmethylated conditions in the chemoreceptors and the ATP-bound and apo conditions of the CheA. Our results indicate that these atomistic simulations, especially with one of the two force fields we tried, capture several relevant features of the downstream effects, such as the methylation favoring an intermediate structure that is more toward a dipped state and increases the chance of ATP hydrolysis. The results thus suggest the sensitivity of the model to reflect the nutrient signal response, a nontrivial validation considering the complexity of the system, encouraging even more detailed studies on the thermodynamic quantification of the effects and the identification of the signaling networks.
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Qin Q, Jun T, Wang B, Patel VG, Mellgard G, Zhong X, Gogerly-Moragoda M, Parikh AB, Leiter A, Gallagher EJ, Alerasool P, Garcia P, Joshi H, Galsky M, Oh WK, Tsao CK. Clinical factors associated with outcome in solid tumor patients treated with immune-checkpoint inhibitors: a single institution retrospective analysis. Discov Oncol 2022; 13:73. [PMID: 35960456 PMCID: PMC9374856 DOI: 10.1007/s12672-022-00538-6] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 08/02/2022] [Indexed: 04/17/2023] Open
Abstract
OBJECTIVES Response to immune checkpoint inhibitor (ICI) remains limited to a subset of patients and predictive biomarkers of response remains an unmet need, limiting our ability to provide precision medicine. Using real-world data, we aimed to identify potential clinical prognosticators of ICI response in solid tumor patients. METHODS We conducted a retrospective analysis of all solid tumor patients treated with ICIs at the Mount Sinai Hospital between January 2011 and April 2017. Predictors assessed included demographics, performance status, co-morbidities, family history of cancer, smoking status, cancer type, metastatic pattern, and type of ICI. Outcomes evaluated include progression free survival (PFS), overall survival (OS), overall response rate (ORR) and disease control rate (DCR). Univariable and multivariable Cox proportional hazard models were constructed to test the association of predictors with outcomes. RESULTS We identified 297 ICI-treated patients with diagnosis of non-small cell lung cancer (N = 81, 27.3%), melanoma (N = 73, 24.6%), hepatocellular carcinoma (N = 51, 17.2%), urothelial carcinoma (N = 51, 17.2%), head and neck squamous cell carcinoma (N = 23, 7.7%), and renal cell carcinoma (N = 18, 6.1%). In multivariable analysis, good performance status of ECOG ≤ 2 (PFS, ORR, DCR and OS) and family history of cancer (ORR and DCR) associated with improved ICI response. Bone metastasis was associated with worse outcomes (PFS, ORR, and DCR). CONCLUSIONS Mechanisms underlying the clinical predictors of response observed in this real-world analysis, such as genetic variants and bone metastasis-tumor microenvironment, warrant further exploration in larger studies incorporating translational endpoints. Consistently positive clinical correlates may help inform patient stratification when considering ICI therapy.
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Affiliation(s)
- Qian Qin
- Division of Hematology/Medical Oncology, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, 1470 Madison Avenue, Third Floor Admin Suite #108 (Hess Building), New York, NY, USA
| | - Tomi Jun
- Division of Hematology/Medical Oncology, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, 1470 Madison Avenue, Third Floor Admin Suite #108 (Hess Building), New York, NY, USA
| | - Bo Wang
- Division of Hematology/Medical Oncology, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, 1470 Madison Avenue, Third Floor Admin Suite #108 (Hess Building), New York, NY, USA
| | - Vaibhav G Patel
- Division of Hematology/Medical Oncology, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, 1470 Madison Avenue, Third Floor Admin Suite #108 (Hess Building), New York, NY, USA
| | | | - Xiaobo Zhong
- Department of Population Health and Policy, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - Anish B Parikh
- Division of Medical Oncology, The Ohio State University Comprehensive Cancer Center-James Cancer Hospital, Columbus, OH, USA
| | - Amanda Leiter
- Division of Endocrinology, Diabetes and Bone Disease, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Emily J Gallagher
- Division of Hematology/Medical Oncology, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, 1470 Madison Avenue, Third Floor Admin Suite #108 (Hess Building), New York, NY, USA
- Division of Endocrinology, Diabetes and Bone Disease, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Parissa Alerasool
- Division of Hematology/Medical Oncology, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, 1470 Madison Avenue, Third Floor Admin Suite #108 (Hess Building), New York, NY, USA
- New York Medical College, Valhalla, NY, USA
| | - Philip Garcia
- Division of Hematology/Medical Oncology, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, 1470 Madison Avenue, Third Floor Admin Suite #108 (Hess Building), New York, NY, USA
| | | | - Matthew Galsky
- Division of Hematology/Medical Oncology, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, 1470 Madison Avenue, Third Floor Admin Suite #108 (Hess Building), New York, NY, USA
| | - William K Oh
- Division of Hematology/Medical Oncology, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, 1470 Madison Avenue, Third Floor Admin Suite #108 (Hess Building), New York, NY, USA
| | - Che-Kai Tsao
- Division of Hematology/Medical Oncology, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, 1470 Madison Avenue, Third Floor Admin Suite #108 (Hess Building), New York, NY, USA.
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Martini A, Yu M, Raggi D, Joshi H, Fallara G, Montorsi F, Necchi A, Galsky MD. Adjuvant immunotherapy in patients with high-risk muscle-invasive urothelial carcinoma: The potential impact of informative censoring. Cancer 2022; 128:2892-2897. [PMID: 35553053 DOI: 10.1002/cncr.34255] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 04/16/2022] [Accepted: 04/18/2022] [Indexed: 11/07/2022]
Abstract
BACKGROUND The results of 2 studies exploring adjuvant immune checkpoint inhibition (aCPI) in high-risk muscle-invasive urothelial cancer have yielded conflicting results. A trial employing placebo as the control arm demonstrated a significant prolongation in disease-free survival (DFS) whereas a trial employing observation as the control arm (IMvigor010) demonstrated no prolongation in DFS with CPI. Here, the authors aimed to estimate the aCPI benefit and to model the potential impact of informative censoring on trial results. METHODS Survival data from 1518 patients was reconstructed from Kaplan-Meier curves. A network meta-analysis approach was used to estimate aCPI benefit through the restricted mean disease-free survival time (RMDFST). To estimate the potential impact of informative censoring on IMvigor010, a simulation was performed. The minimum proportion of informative censoring on the observation arm that could account for the lack of observed improvement in DFS was estimated. Random variability from the time of censoring to progression was modeled using the exponential distribution. RESULTS Patients receiving aCPI had better DFS: ΔRMDFST at 36 months of 2.2 (95% CI, 0.6-3.7, P = .006) months relative to observation/placebo. In IMvigor010, in the observation arm, 20.5% of patients were censored due to consent withdrawal, protocol violation and/or noncompliance, or lost to follow-up versus 8.2% in the treatment arm. On simulation, it was found that the lack of observed improvement in DFS could have resulted from as few as 14% of the censored patients on observation arm not being censored at random (simulated DFS with 14% informative censoring hazard ratio, 0.83; 95% CI, 0.69-0.99; P = .049). CONCLUSIONS Phase 3 trials comparing adjuvant therapies to observation are at risk for informative censoring that could potentially impact interpretation of study results.
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Affiliation(s)
- Alberto Martini
- Department of Urology, Vita-Salute San Raffaele University, Milan, Italy
| | - Menggang Yu
- Department of Biostatistics and Medical Informatics, University of Wisconsin, Madison, Wisconsin
| | - Daniele Raggi
- Department of Oncology, Vita-Salute San Raffaele University, Milan, Italy
| | - Himanshu Joshi
- Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Giuseppe Fallara
- Department of Urology, Vita-Salute San Raffaele University, Milan, Italy
| | - Francesco Montorsi
- Department of Urology, Vita-Salute San Raffaele University, Milan, Italy
| | - Andrea Necchi
- Department of Oncology, Vita-Salute San Raffaele University, Milan, Italy
| | - Matthew D Galsky
- Division of Hematology/Oncology, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York
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Paul S, Shaw D, Joshi H, Singh S, Chakrabarti A, Rudramurthy SM, Ghosh AK. Mechanisms of azole antifungal resistance in clinical isolates of Candida tropicalis. PLoS One 2022; 17:e0269721. [PMID: 35819969 PMCID: PMC9275685 DOI: 10.1371/journal.pone.0269721] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [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: 09/14/2021] [Accepted: 05/26/2022] [Indexed: 11/30/2022] Open
Abstract
This study was designed to understand the molecular mechanisms of azole resistance in Candida tropicalis using genetic and bioinformatics approaches. Thirty-two azole-resistant and 10 azole-susceptible (S) clinical isolates of C. tropicalis were subjected to mutation analysis of the azole target genes including ERG11. Inducible expression analysis of 17 other genes potentially associated with azole resistance was also evaluated. Homology modeling and molecular docking analysis were performed to study the effect of amino acid alterations in mediating azole resistance. Of the 32 resistant isolates, 12 (37.5%) showed A395T and C461T mutations in the ERG11 gene. The mean overexpression of CDR1, CDR3, TAC1, ERG1, ERG2, ERG3, ERG11, UPC2, and MKC1 in resistant isolates without mutation (R-WTM) was significantly higher (p<0.05) than those with mutation (R-WM) and the sensitive isolates (3.2–11 vs. 0.2–2.5 and 0.3–2.2 folds, respectively). Although the R-WTM and R-WM had higher (p<0.05) CDR2 and MRR1 expression compared to S isolates, noticeable variation was not seen among the other genes. Protein homology modelling and molecular docking revealed that the mutations in the ERG11 gene were responsible for structural alteration and low binding efficiency between ERG11p and ligands. Isolates with ERG11 mutations also presented A220C in ERG1 and together T503C, G751A mutations in UPC2. Nonsynonymous mutations in the ERG11 gene and coordinated overexpression of various genes including different transporters, ergosterol biosynthesis pathway, transcription factors, and stress-responsive genes are associated with azole resistance in clinical isolates of C. tropicalis.
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Affiliation(s)
- Saikat Paul
- Department of Medical Microbiology, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Dipika Shaw
- Department of Medical Microbiology, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Himanshu Joshi
- Department of Medical Microbiology, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Shreya Singh
- Department of Medical Microbiology, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Arunaloke Chakrabarti
- Department of Medical Microbiology, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Shivaprakash M. Rudramurthy
- Department of Medical Microbiology, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Anup K. Ghosh
- Department of Medical Microbiology, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
- * E-mail:
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39
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Shen J, Roy A, Joshi H, Samineni L, Ye R, Tu YM, Song W, Skiles M, Kumar M, Aksimentiev A, Zeng H. Fluorofoldamer-Based Salt- and Proton-Rejecting Artificial Water Channels for Ultrafast Water Transport. Nano Lett 2022; 22:4831-4838. [PMID: 35674810 DOI: 10.1021/acs.nanolett.2c01137] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [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] [Indexed: 06/15/2023]
Abstract
Here, we report on a novel class of fluorofoldamer-based artificial water channels (AWCs) that combines excellent water transport rate and selectivity with structural simplicity and robustness. Produced by a facile one-pot copolymerization reaction under mild conditions, the best-performing channel (AWC 1) is an n-C8H17-decorated foldamer nanotube with an average channel length of 2.8 nm and a pore diameter of 5.2 Å. AWC 1 demonstrates an ultrafast water conduction rate of 1.4 × 1010 H2O/s per channel, outperforming the archetypal biological water channel, aquaporin 1, while excluding salts (i.e., NaCl and KCl) and protons. Unique to this class of channels, the inwardly facing C(sp2)-F atoms being the most electronegative in the periodic table are proposed as being critical to enabling the ultrafast and superselective water transport properties by decreasing the channel's cavity and enhancing the channel wall smoothness via reducing intermolecular forces with water molecules or hydrated ions.
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Affiliation(s)
- Jie Shen
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Arundhati Roy
- Department of Pharmacy, Ludwig Maximilian University Munich Butenandtstraße 5-13, Munich 81377, Germany
| | - Himanshu Joshi
- Department of Physics and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Laxmicharan Samineni
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Ruijuan Ye
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Yu-Ming Tu
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Woochul Song
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Matthew Skiles
- Department of Civil, Architectural and Environmental Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Manish Kumar
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
- Department of Civil, Architectural and Environmental Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Aleksei Aksimentiev
- Department of Physics and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Huaqiang Zeng
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
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Joshi H, Shankar A, Limbu N, Ram M, Laref A, Patra PK, Ismailova OB, Zuala L, Chatterjee S, Rai DP. Pressure-Induced Enhanced Optical Absorption in Sulvanite Compound Cu 3TaX 4 (X = S, Se, and Te): An ab Initio Study. ACS Omega 2022; 7:19070-19079. [PMID: 35722007 PMCID: PMC9202285 DOI: 10.1021/acsomega.1c06795] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Accepted: 05/06/2022] [Indexed: 05/30/2023]
Abstract
Ab initio study on the family of ternary copper chalcogenides Cu3TaX4 (X = S, Se, and Te) is performed to investigate the suitability of these compounds to applications as photovoltaic absorber materials. The density functional theory based full potential linearized augmented plane wave method (FP-LAPW method) is employed for computational purposes. The electronic structure and optical properties are determined including electron-electron interaction and spin-orbit coupling (SOC), within the generalized gradient approximation plus Hubbard U (GGA+U) and GGA+U+SOC approximation. The large optical band gaps of Cu3TaS4 and Cu3TaSe4 considered ineffective for absorber materials, and also the hole effective mass has been modulated through applied pressure. These materials show extreme resistance to external pressure, and are found to be stable up to a pressure range of 10 GPa, investigated using phonon dispersion calculations. The observed optical properties and the absorption coefficients within the visible-light spectrum make these compounds promising materials for photovoltaic applications. The calculated energy and optical band gaps are consistent with the available literature and are compared with the experimental results where available.
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Affiliation(s)
- Himanshu Joshi
- Condensed
Matter Theory Research Lab, Kurseong College, Darjeeling 734203, India
- Department
of Physics, St. Josephs College, North Point, Darjeeling 734103, India
| | - Amit Shankar
- Condensed
Matter Theory Research Lab, Kurseong College, Darjeeling 734203, India
| | - Nihal Limbu
- Condensed
Matter Theory Research Lab, Kurseong College, Darjeeling 734203, India
- Department
of Physics, North Eastern Hill University, Shillong, Meghalaya 793022, India
| | - Mahesh Ram
- Condensed
Matter Theory Research Lab, Kurseong College, Darjeeling 734203, India
- Department
of Physics, North Eastern Hill University, Shillong, Meghalaya 793022, India
| | - Amel Laref
- Physics
Department, Faculty of Science, King Saudi
University, Riyad 11451, Saudi Arabia
| | - Prasanta Kumar Patra
- Department
of Physics, North Eastern Hill University, Shillong, Meghalaya 793022, India
| | - Oksana Bakhtiyarovna Ismailova
- Uzbekistan-Japan
Innovation Center of Youth, Tashkent 100180, Uzbekistan
- Turin
Polytechnic
University in Tashkent, Tashkent 100095, Uzbekistan
| | - Lalhriat Zuala
- Physical
Sciences Research Center (PSRC), Department of Physics, Pachhunga University College, Mizoram University, Aizawl, Mizoram 796001, India
| | - Suman Chatterjee
- Department
of Physics, University of North Bengal, Siliguri, Darjeeling 734013, India
| | - Dibya Prakash Rai
- Physical
Sciences Research Center (PSRC), Department of Physics, Pachhunga University College, Mizoram University, Aizawl, Mizoram 796001, India
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Sharma M, Luthra S, Joshi S, Joshi H. Challenges to agile project management during COVID-19 pandemic: an emerging economy perspective. Oper Manag Res 2022. [PMCID: PMC9038443 DOI: 10.1007/s12063-021-00249-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Globally, COVID-19 pandemic has affected more than 214 countries across the world, creating uncertainty and affecting every institution and individual. The organisations recognise the need of agile projects that may offer several benefits including faster deployments, adaptability and best fit alignment to fulfill the customer needs. Implementing agile projects is the key to survive in the post pandemic situation, but emerging economies have limited scope for implementation. The present study determines the critical factors that restricts implementation of agile projects in emerging economies. The critical factors are identified from literature and validated by experts. The validated critical factors are further assessed to identify the cause-and-effect relationship using Fuzzy Decision-Making Trial and Laboratory (F-DEMATEL) method. The results of the study posit ‘Skepticism towards the new way of working’ is the most significant causal factor affecting other factors. This study is an attempt to help project managers to consider the significant factors for agile project implementation in post pandemic situation. The project managers may be benefitted from this study by considering these factors to manage challenges for agile project implementation in emerging economies. This study contributes to assess the influencing and the influenced challenging factors for agile project implementation.
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Yuen M, Worgan L, Iwanski J, Pappas CT, Joshi H, Churko JM, Arbuckle S, Kirk EP, Zhu Y, Roscioli T, Gregorio CC, Cooper ST. Neonatal-lethal dilated cardiomyopathy due to a homozygous LMOD2 donor splice-site variant. Eur J Hum Genet 2022; 30:450-457. [PMID: 35082396 PMCID: PMC8989920 DOI: 10.1038/s41431-022-01043-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 12/23/2021] [Accepted: 01/07/2022] [Indexed: 12/29/2022] Open
Abstract
Dilated cardiomyopathy (DCM) is characterized by cardiac enlargement and impaired ventricular contractility leading to heart failure. A single report identified variants in leiomodin-2 (LMOD2) as a cause of neonatally-lethal DCM. Here, we describe two siblings with DCM who died shortly after birth due to heart failure. Exome sequencing identified a homozygous LMOD2 variant in both siblings, (GRCh38)chr7:g.123656237G > A; NM_207163.2:c.273 + 1G > A, ablating the donor 5' splice-site of intron-1. Pre-mRNA splicing studies and western blot analysis on cDNA derived from proband cardiac tissue, MyoD-transduced proband skin fibroblasts and HEK293 cells transfected with LMOD2 gene constructs established variant-associated absence of canonically spliced LMOD2 mRNA and full-length LMOD2 protein. Immunostaining of proband heart tissue unveiled abnormally short actin-thin filaments. Our data are consistent with LMOD2 c.273 + 1G > A abolishing/reducing LMOD2 transcript expression by: (1) variant-associated perturbation in initiation of transcription due to ablation of the intron-1 donor; and/or (2) degradation of aberrant LMOD2 transcripts (resulting from use of alternative transcription start-sites or cryptic splice-sites) by nonsense-mediated decay. LMOD2 expression is critical for life and the absence of LMOD2 is associated with thin filament shortening and severe cardiac contractile dysfunction. This study describes the first splice-site variant in LMOD2 and confirms the role of LMOD2 variants in DCM.
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Affiliation(s)
- Michaela Yuen
- Kids Neuroscience Centre, The Children's Hospital at Westmead, Westmead, NSW, Australia.
- Discipline of Child and Adolescent Health, Sydney Medical School, University of Sydney, Camperdown, NSW, Australia.
| | - Lisa Worgan
- Department of Medical Genomics, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
| | - Jessika Iwanski
- Department of Cellular and Molecular Medicine and Sarver Molecular Cardiovascular Research Program, The University of Arizona, Tucson, AZ, USA
| | - Christopher T Pappas
- Department of Cellular and Molecular Medicine and Sarver Molecular Cardiovascular Research Program, The University of Arizona, Tucson, AZ, USA
| | - Himanshu Joshi
- Kids Neuroscience Centre, The Children's Hospital at Westmead, Westmead, NSW, Australia
| | - Jared M Churko
- Department of Cellular and Molecular Medicine and Sarver Molecular Cardiovascular Research Program, The University of Arizona, Tucson, AZ, USA
| | - Susan Arbuckle
- Department of Histopathology, The Children's Hospital at Westmead, Westmead, NSW, Australia
| | - Edwin P Kirk
- New South Wales Health Pathology, Randwick Genomics Laboratory, Randwick, NSW, Australia
- School of Women's and Children's Health, University of New South Wales, Randwick, NSW, Australia
- Centre for Clinical Genetics, Sydney Children's Hospital, Randwick, NSW, Australia
| | - Ying Zhu
- New South Wales Health Pathology, Randwick Genomics Laboratory, Randwick, NSW, Australia
| | - Tony Roscioli
- New South Wales Health Pathology, Randwick Genomics Laboratory, Randwick, NSW, Australia
- Centre for Clinical Genetics, Sydney Children's Hospital, Randwick, NSW, Australia
- Neuroscience Research Australia (NeuRA), University of New South Wales, Sydney, NSW, Australia
| | - Carol C Gregorio
- Department of Cellular and Molecular Medicine and Sarver Molecular Cardiovascular Research Program, The University of Arizona, Tucson, AZ, USA
| | - Sandra T Cooper
- Kids Neuroscience Centre, The Children's Hospital at Westmead, Westmead, NSW, Australia
- Discipline of Child and Adolescent Health, Sydney Medical School, University of Sydney, Camperdown, NSW, Australia
- The Children's Medical Research Institute, Westmead, NSW, Australia
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Cha E, Mathis NJ, Joshi H, Sharma S, Zinovoy M, Ru M, Cahlon O, Gillespie EF, Marshall DC. Bias in Patient Experience Scores in Radiation Oncology: A Multicenter Retrospective Analysis. J Am Coll Radiol 2022; 19:542-551. [PMID: 35247326 PMCID: PMC9017791 DOI: 10.1016/j.jacr.2022.01.013] [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: 09/27/2021] [Revised: 01/05/2022] [Accepted: 01/09/2022] [Indexed: 10/19/2022]
Abstract
PURPOSE Patient experience scores are increasingly important in measuring quality of care and determining reimbursement from payers, including the Hospital Value-Based Purchasing Program and the Radiation Oncology Model. However, the role of bias in patient experience scores in oncology is unknown, raising the possibility that such payment structures may inadvertently perpetuate bias in reimbursement. Therefore, the authors characterized patient-, physician-, and practice-level predictors of patient experience scores in patients undergoing radiation therapy. METHODS The authors retrospectively reviewed patient experience surveys for radiation oncology patients treated at two large multisite academic cancer centers. The outcome was responses on four survey questions. Covariates included self-reported patient demographics, physician characteristics, practice setting characteristics, and wait-time rating linked to each survey. Multivariable ordinal regression models were fitted to identify predictors of receiving a higher score on each of the survey questions. RESULTS In total, 2,868 patients completed surveys and were included in the analysis. Patient experience scores were generally high, with >90% of respondents answering 5 of 5 on the four survey items. Physician gender was not associated with any measured patient experience outcomes (P > 0.40 for all). Independent predictors of higher score included a wait-time experience classified as "good" as compared with "not good" (q < .001 for all). CONCLUSIONS Oncology practices aiming to improve patient experience scores may wish to focus their attention on improving wait times for patients. Although a difference in patient experience scores on the basis of physician gender was not observed, such bias is likely to be complex, and further research is needed to characterize its effects.
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Affiliation(s)
- Elaine Cha
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Noah J Mathis
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Himanshu Joshi
- Institute for Healthcare Delivery Science, Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, New York; Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Sonam Sharma
- Assistant Program Director, Department of Radiation Oncology, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Melissa Zinovoy
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Meng Ru
- Institute for Healthcare Delivery Science, Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Oren Cahlon
- Deputy Physician-in-Chief for Strategic Partnerships and Vice Chair, Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Erin F Gillespie
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Deborah C Marshall
- Department of Radiation Oncology, Icahn School of Medicine at Mount Sinai, New York, New York.
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Jain H, Kumar A, Rajput VD, Minkina T, Verma AK, Wadhwa S, Dhupper R, Chandra Garg M, Joshi H. Fabrication and characterization of high-performance forward-osmosis membrane by introducing manganese oxide incited graphene quantum dots. J Environ Manage 2022; 305:114335. [PMID: 34952392 DOI: 10.1016/j.jenvman.2021.114335] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Revised: 12/15/2021] [Accepted: 12/16/2021] [Indexed: 06/14/2023]
Abstract
Forward osmosis (FO) is the futuristic membrane desalination technology as it transcends the disadvantages of other pressure-driven techniques. But, there still remain critical challenges like fabrication of highly permeable membrane with ideal structures maintaining high rejection rates that need to be addressed for implementation as a practical technology. In this work, novel thin-film composite (TFC) membranes were fabricated by means of incorporating manganese oxide (MnO2) incited graphene quantum dots (GQDs) nanocomposite into a cellulose acetate (CA) suspension followed by phase inversion (PI) for enhanced FO performance. The surface morphology and chemical structure of fabricated membranes were studied using various characterization techniques like XRD, FT-IR, SEM-EDS, Mapping, AFM, and TGA. The structural parameters, water flux, reverse salt flux and salt rejection was estimated on the basis of data obtained from four varying initial draw solution concentrations. At high nanocomposites stacking, the hydrophilicity of the casting blend increase, and subsequently, the PI exchange rate additionally increases, which brings about noticeable difference in the surface morphology. The membrane with 0.5 wt% nanocomposite exhibited superior FO separation performance with osmotic water flux of 18.89, 34.49, 41.76 and 42.34 in L.m-2.h-1 with variable concentrations of NaCl salt solution (0.25M, 0.5M, 1M, and 2M), respectively. Also, the porosity of the membrane was increased to 47.23% with 96.87% salt rejection. The results indicate that the hydrophilicity of the nanocomposite drives them to the interface among CA and water during PI process leading to solid hydrogen bonding to achieve high water permeability.
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Affiliation(s)
- Harshita Jain
- Amity Institute of Environmental Sciences, Amity University Uttar Pradesh, Noida Sector-125, Uttar Pradesh, 201313, India
| | - Ajay Kumar
- Department of Hydrology, Indian Institute of Technology Roorkee, Uttarakhand, 247667, India
| | - Vishnu D Rajput
- Academy of Biology and Biotechnology, Southern Federal University, 344090, Rostov-on-Don, Russia
| | - Tatiana Minkina
- Academy of Biology and Biotechnology, Southern Federal University, 344090, Rostov-on-Don, Russia
| | - Anoop Kumar Verma
- School of Energy and Environment, Thapar Institute of Engineering and Technology, Patiala, Punjab, 147005, India
| | - Shikha Wadhwa
- Department of Chemistry, School of Engineering, University of Petroleum & Energy Studies, Bidholi Campus, Dehradun, Uttarakhand, 248007, India
| | - Renu Dhupper
- Amity Institute of Environmental Sciences, Amity University Uttar Pradesh, Noida Sector-125, Uttar Pradesh, 201313, India
| | - Manoj Chandra Garg
- Amity Institute of Environmental Sciences, Amity University Uttar Pradesh, Noida Sector-125, Uttar Pradesh, 201313, India.
| | - Himanshu Joshi
- Department of Hydrology, Indian Institute of Technology Roorkee, Uttarakhand, 247667, India
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Richards LA, Fox BG, Bowes MJ, Khamis K, Kumar A, Kumari R, Kumar S, Hazra M, Howard B, Thorn RMS, Read DS, Nel HA, Schneidewind U, Armstrong LK, Nicholls DJE, Magnone D, Ghosh A, Chakravorty B, Joshi H, Dutta TK, Hannah DM, Reynolds DM, Krause S, Gooddy DC, Polya DA. A systematic approach to understand hydrogeochemical dynamics in large river systems: Development and application to the River Ganges (Ganga) in India. Water Res 2022; 211:118054. [PMID: 35066262 DOI: 10.1016/j.watres.2022.118054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 12/16/2021] [Accepted: 01/09/2022] [Indexed: 06/14/2023]
Abstract
Large river systems, such as the River Ganges (Ganga), provide crucial water resources for the environment and society, yet often face significant challenges associated with cumulative impacts arising from upstream environmental and anthropogenic influences. Understanding the complex dynamics of such systems remains a major challenge, especially given accelerating environmental stressors including climate change and urbanization, and due to limitations in data and process understanding across scales. An integrated approach is required which robustly enables the hydrogeochemical dynamics and underpinning processes impacting water quality in large river systems to be explored. Here we develop a systematic approach for improving the understanding of hydrogeochemical dynamics and processes in large river systems, and apply this to a longitudinal survey (> 2500 km) of the River Ganges (Ganga) and key tributaries in the Indo-Gangetic basin. This framework enables us to succinctly interpret downstream water quality trends in response to the underpinning processes controlling major element hydrogeochemistry across the basin, based on conceptual water source signatures and dynamics. Informed by a 2019 post-monsoonal survey of 81 river bank-side sampling locations, the spatial distribution of a suite of selected physico-chemical and inorganic parameters, combined with segmented linear regression, reveals minor and major downstream hydrogeochemical transitions. We use this information to identify five major hydrogeochemical zones, characterized, in part, by the inputs of key tributaries, urban and agricultural areas, and estuarine inputs near the Bay of Bengal. Dominant trends are further explored by investigating geochemical relationships (e.g. Na:Cl, Ca:Na, Mg:Na, Sr:Ca and NO3:Cl), and how water source signatures and dynamics are modified by key processes, to assess the relative importance of controls such as dilution, evaporation, water-rock interactions (including carbonate and silicate weathering) and anthropogenic inputs. Mixing/dilution between sources and water-rock interactions explain most regional trends in major ion chemistry, although localized controls plausibly linked to anthropogenic activities are also evident in some locations. Temporal and spatial representativeness of river bank-side sampling are considered by supplementary sampling across the river at selected locations and via comparison to historical records. Limitations of such large-scale longitudinal sampling programs are discussed, as well as approaches to address some of these inherent challenges. This approach brings new, systematic insight into the basin-wide controls on the dominant geochemistry of the River Ganga, and provides a framework for characterising dominant hydrogeochemical zones, processes and controls, with utility to be transferable to other large river systems.
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Affiliation(s)
- Laura A Richards
- Department of Earth and Environmental Sciences and Williamson Research Centre for Molecular Environmental Science, The University of Manchester, Williamson Building, Oxford Road, Manchester, M13 9PL, United Kingdom.
| | - Bethany G Fox
- Department of Applied Sciences, University of the West of England, Bristol, BS16 1QY, United Kingdom
| | - Michael J Bowes
- UK Centre for Ecology & Hydrology, MacLean Building, Wallingford, Oxfordshire, OX10 8BB, United Kingdom
| | - Kieran Khamis
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom
| | - Arun Kumar
- Mahavir Cancer Sansthan and Research Centre, Phulwarisharif, Patna, 801505, Bihar, India
| | - Rupa Kumari
- Mahavir Cancer Sansthan and Research Centre, Phulwarisharif, Patna, 801505, Bihar, India
| | - Sumant Kumar
- Groundwater Hydrology Division, National Institute of Hydrology Roorkee, Roorkee, 247667, Uttarakhand, India
| | - Moushumi Hazra
- Department of Hydrology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
| | - Ben Howard
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom
| | - Robin M S Thorn
- Department of Applied Sciences, University of the West of England, Bristol, BS16 1QY, United Kingdom
| | - Daniel S Read
- UK Centre for Ecology & Hydrology, MacLean Building, Wallingford, Oxfordshire, OX10 8BB, United Kingdom
| | - Holly A Nel
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom
| | - Uwe Schneidewind
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom
| | - Linda K Armstrong
- UK Centre for Ecology & Hydrology, MacLean Building, Wallingford, Oxfordshire, OX10 8BB, United Kingdom
| | - David J E Nicholls
- UK Centre for Ecology & Hydrology, MacLean Building, Wallingford, Oxfordshire, OX10 8BB, United Kingdom
| | - Daniel Magnone
- School of Geography, University of Lincoln, Lincoln, LN6 7TS, United Kingdom
| | - Ashok Ghosh
- Mahavir Cancer Sansthan and Research Centre, Phulwarisharif, Patna, 801505, Bihar, India
| | | | - Himanshu Joshi
- Department of Hydrology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
| | - Tapan K Dutta
- Bose Institute, Centenary Campus, P-1/12 C.I.T Scheme VII-M, Kolkata 700054, India
| | - David M Hannah
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom
| | - Darren M Reynolds
- Department of Applied Sciences, University of the West of England, Bristol, BS16 1QY, United Kingdom
| | - Stefan Krause
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom
| | - Daren C Gooddy
- British Geological Survey, Maclean Building, Wallingford, Oxfordshire OX10 8BB, United Kingdom
| | - David A Polya
- Department of Earth and Environmental Sciences and Williamson Research Centre for Molecular Environmental Science, The University of Manchester, Williamson Building, Oxford Road, Manchester, M13 9PL, United Kingdom
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Limbu N, Ram M, Joshi H, Saxena A, Shankar A. Electronic and thermoelectric properties of Nd-doped Ce-filled skutterudites. Phys Chem Chem Phys 2022; 24:4533-4546. [PMID: 35119444 DOI: 10.1039/d1cp04504k] [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: 11/21/2022]
Abstract
The electronic and thermoelectric properties of Nd-doped Ce-filled skutterudites (CeFe4P12, CeFe4As12, and CeOs4P12) were explored using full-potential linearized augmented plane waves (FP-LAPW). The exchange-correlation between the electrons was treated with the generalized gradient approximation of Perdew-Burke-Ernzerhof (PBE) and the Coulomb repulsion term (U) between the electrons for the highly correlated system was also considered. The energy band structures revealed the semiconducting nature with energy gaps of 0.42 eV, 0.25 eV and 0.22 eV for CeFe4P12, CeFe4As12, and CeOs4P12, respectively. The phonon dispersion curve displayed the forbidden gap between the optical and acoustic modes in CeFe4P12 and CeOs4P12. The analysis of n-type and p-type doping on pure alloys suggest enhanced thermoelectric behavior in p-type doping on pure alloys and hence the addition of Nd at the central cage atomic site generates flat and dense bands at EF and also opens an optical band gap in doped CeOs4P12. Moreover, the Nd atom introduces strong phonon scattering and hence reduces the lattice thermal conductivity (KL) substantially from 6.79 W m-1 K-1 to 3.47 W m-1 K-1 for CeFe4P12, 3.63 W m-1 K-1 to 1.97 W m-1 K-1 for CeFe4As12 and 6.43 W m-1 K-1 to 2.58 W m-1 K-1 for CeOs4P12 at room temperature. A considerably amplified figure of merit has been observed for the doped sample materials with the highest value of 0.72 at 800 K for doped CeFe4P12 with the highest Seebeck coefficient of 215.51 μV K-1.
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Affiliation(s)
- Nihal Limbu
- Department of Physics, North-Eastern Hill University, Shillong 793022, India.,Condensed Matter Theory Research Lab, Department of Physics, Kurseong College, Kurseong, Darjeeling 734203, India.
| | - Mahesh Ram
- Department of Physics, North-Eastern Hill University, Shillong 793022, India.,Condensed Matter Theory Research Lab, Department of Physics, Kurseong College, Kurseong, Darjeeling 734203, India.
| | - Himanshu Joshi
- Condensed Matter Theory Research Lab, Department of Physics, Kurseong College, Kurseong, Darjeeling 734203, India.
| | - Atul Saxena
- Department of Physics, North-Eastern Hill University, Shillong 793022, India
| | - Amit Shankar
- Condensed Matter Theory Research Lab, Department of Physics, Kurseong College, Kurseong, Darjeeling 734203, India.
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MP G, M AK, Joshi H. Evaluation of Anti-anxiety Potential of Tinospora cordifolia (Willd.) Leaf Extract in Mice Using Experimental Models. J Young Pharm 2022. [DOI: 10.5530/jyp.2022.14.9] [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: 11/23/2022] Open
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Mehrafrooz B, Joshi H, Oh H, Tu YM, Kumar M, Aksimentiev A. Molecular dynamics simulations of OmpF permeability to liquid and vapor water. Biophys J 2022. [DOI: 10.1016/j.bpj.2021.11.2859] [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: 11/02/2022] Open
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Martini A, Raggi D, Joshi H, Fallara G, Nocera L, Belladelli F, Montorsi F, Necchi A, Galsky M. Adjuvant immunotherapy in patients with high-risk muscle-invasive urothelial carcinoma and the potential impact of informative censoring. Eur Urol 2022. [DOI: 10.1016/s0302-2838(22)00980-0] [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: 11/04/2022]
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Mehta B, Joshi H, Shah U, Patel P. Chemometric Assisted Spectrophotometric Method for the Simultaneous Determination of Olmesartan Medoxomil and Hydrochlorothiazide in Bulk and Tablet Dosage Form. Indian J Pharm Sci 2022. [DOI: 10.36468/pharmaceutical-sciences.962] [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: 11/22/2022] Open
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