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Srivastava I, Xue R, Huang HK, Wang Z, Jones J, Vasquez I, Pandit S, Lin L, Zhao S, Flatt K, Gruev V, Chen YS, Nie S. Biomimetic-Membrane-Protected Plasmonic Nanostructures as Dual-Modality Contrast Agents for Correlated Surface-Enhanced Raman Scattering and Photoacoustic Detection of Hidden Tumor Lesions. ACS Appl Mater Interfaces 2024; 16:8554-8569. [PMID: 38323816 DOI: 10.1021/acsami.3c18488] [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] [Indexed: 02/08/2024]
Abstract
Optical imaging and spectroscopic modalities are of considerable current interest for in vivo cancer detection and image-guided surgery, but the turbid or scattering nature of biomedical tissues has severely limited their abilities to detect buried or occluded tumor lesions. Here we report the development of a dual-modality plasmonic nanostructure based on colloidal gold nanostars (AuNSs) for simultaneous surface-enhanced Raman scattering (SERS) and photoacoustic (PA) detection of tumor phantoms embedded (hidden) in ex vivo animal tissues. By using red blood cell membranes as a naturally derived biomimetic coating, we show that this class of dual-modality contrast agents can provide both Raman spectroscopic and PA signals for the detection and differentiation of hidden solid tumors with greatly improved depths of tissue penetration. Compared to previous polymer-coated AuNSs, the biomimetic coatings are also able to minimize protein adsorption and cellular uptake when exposed to human plasma without compromising their SERS or PA signals. We further show that tumor-targeting peptides (such as cyclic RGD) can be noncovalently inserted for targeting the ανβ3-integrin receptors expressed on metastatic cancer cells and tracked via both SERS and PA imaging (PAI). Finally, we demonstrate image-guided resections of tumor-mimicking phantoms comprising metastatic tumor cells buried under layers of skin and fat tissues (6 mm in thickness). Specifically, PAI was used to determine the precise tumor location, while SERS spectroscopic signals were used for tumor identification and differentiation. This work opens the possibility of using these biomimetic dual-modality nanoparticles with superior signal and biological stability for intraoperative cancer detection and resection.
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Affiliation(s)
- Indrajit Srivastava
- Department of Mechanical Engineering, Texas Tech University, Lubbock, Texas 79409, United States
| | | | | | | | | | - Isabella Vasquez
- Department of Mechanical Engineering, Texas Tech University, Lubbock, Texas 79409, United States
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409, United States
| | | | - Li Lin
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200030, China
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Bian Z, Wallum A, Mehmood A, Gomez E, Wang Z, Pandit S, Nie S, Link S, Levine BG, Gruebele M. Properties of Carbon Dots versus Small Molecules from "Bottom-up" Synthesis. ACS Nano 2023; 17:22788-22799. [PMID: 37970787 DOI: 10.1021/acsnano.3c07486] [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: 11/19/2023]
Abstract
A major challenge in the "bottom-up" solvothermal synthesis of carbon dots (CDs) is the removal of small-molecule byproducts, noncarbonized polyamides, or other impurities that confound the optical properties. In previously reported benzene diamine-based CDs, the observed fluorescence signal already has been shown to arise from free small molecules, not from nanosized carbonized dots. Here we have unambiguously identified the small-molecule species in the synthesis of CDs starting with several isomers of benzene diamine by directly matching their NMR, mass spectrometry, and optical data with commercially available small organic molecules. By combining dialysis and chromatography, we have sufficiently purified the CD reaction mixtures to measure the CD size by TEM and STM, elemental composition, optical absorption and emission, and single-particle blinking dynamics. The results can be rationalized by electronic structure calculations on small model CDs. Our results conclusively show that the purified benzene diamine-based CDs do not emit red fluorescence, so the quest for full-spectrum fluorescence from isomers of a single precursor molecule remains open.
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Affiliation(s)
- Zhengyi Bian
- Department of Materials Science and Engineering, College of Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Alison Wallum
- Department of Chemistry, College of Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Arshad Mehmood
- Department of Chemistry and Institute for Advanced Computational Science, Stony Brook University, Stony Brook, New York 11794, United States
| | - Eric Gomez
- Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Ziwen Wang
- Department of Bioengineering, College of Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Subhendu Pandit
- Department of Bioengineering, College of Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Shuming Nie
- Department of Chemistry, College of Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Bioengineering, College of Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Electrical and Computer Engineering, College of Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Stephan Link
- Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, United States
- Department of Electrical and Computer Engineering, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Benjamin G Levine
- Department of Chemistry and Institute for Advanced Computational Science, Stony Brook University, Stony Brook, New York 11794, United States
| | - Martin Gruebele
- Department of Chemistry, College of Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Physics, Center for Biophysics and Quantitative Biology, and Carle-Illinois, College of Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
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Srivastava I, Moitra P, Brent KM, Wang K, Pandit S, Altun E, Pan D. Biodegradable and switchable near-infrared fluorescent probes for hypoxia detection. Nanomedicine (Lond) 2023; 18:1061-1073. [PMID: 37610080 DOI: 10.2217/nnm-2023-0095] [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: 08/24/2023] Open
Abstract
Aims: Among solid tumors, hypoxia is a common characteristic and responsible for chemotherapeutic resistance. Hypoxia-sensitive imaging probes are therefore essential for early tumor detection, growth monitoring and drug-response evaluation. Despite significant efforts, detecting hypoxic oxygen levels remains challenging. Materials & methods: This paper demonstrates the use of an amine-rich carbon dot probe functionalized with an imidazole group that exhibits reversible fluorescence switching in normoxic and hypoxic environments. Results & conclusion: We demonstrate the ability to emit near-infrared light only under hypoxic conditions. The probes are found to be biodegradable in the presence of human digestive enzymes such as lipase. Ex vivo tissue imaging experiments revealed promising near-infrared signals even at a depth of 5 mm for the probe under ex vivo imaging conditions.
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Affiliation(s)
- Indrajit Srivastava
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, IL 61801, USA
| | - Parikshit Moitra
- Department of Nuclear Engineering, The Pennsylvania State University, University Park, PA 16802, USA
| | - Kurtis M Brent
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, IL 61801, USA
| | - Kevin Wang
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, IL 61801, USA
| | - Subhendu Pandit
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, IL 61801, USA
| | - Esra Altun
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, IL 61801, USA
| | - Dipanjan Pan
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, IL 61801, USA
- Department of Nuclear Engineering, The Pennsylvania State University, University Park, PA 16802, USA
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA 16802, USA
- Huck Institutes of the Life Sciences, University Park, PA 16802, USA
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Srivastava I, Lew B, Wang Y, Blair S, George MB, Hajek BS, Bangru S, Pandit S, Wang Z, Ludwig J, Flatt K, Gruebele M, Nie S, Gruev V. Cell-Membrane Coated Nanoparticles for Tumor Delineation and Qualitative Estimation of Cancer Biomarkers at Single Wavelength Excitation in Murine and Phantom Models. ACS Nano 2023; 17:8465-8482. [PMID: 37126072 DOI: 10.1021/acsnano.3c00578] [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: 05/10/2023]
Abstract
Real-time guidance through fluorescence imaging improves the surgical outcomes of tumor resections, reducing the chances of leaving positive margins behind. As tumors are heterogeneous, it is imperative to interrogate multiple overexpressed cancer biomarkers with high sensitivity and specificity to improve surgical outcomes. However, for accurate tumor delineation and ratiometric detection of tumor biomarkers, current methods require multiple excitation wavelengths to image multiple biomarkers, which is impractical in a clinical setting. Here, we have developed a biomimetic platform comprising near-infrared fluorescent semiconducting polymer nanoparticles (SPNs) with red blood cell membrane (RBC) coating, capable of targeting two representative cell-surface biomarkers (folate, αυβ3 integrins) using a single excitation wavelength for tumor delineation during surgical interventions. We evaluate our single excitation ratiometric nanoparticles in in vitro tumor cells, ex vivo tumor-mimicking phantoms, and in vivo mouse xenograft tumor models. Favorable biological properties (improved biocompatibility, prolonged blood circulation, reduced liver uptake) are complemented by superior spectral features: (i) specific fluorescence enhancement in tumor regions with high tumor-to-normal tissue (T/NT) ratios in ex vivo samples and (ii) estimation of cell-surface tumor biomarkers with single wavelength excitation providing insights about cancer progression (metastases). Our single excitation, dual output approach has the potential to differentiate between the tumor and healthy regions and simultaneously provide a qualitative indicator of cancer progression, thereby guiding surgeons in the operating room with the resection process.
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Affiliation(s)
| | | | | | | | | | | | - Sushant Bangru
- Department of Cell Biology, Duke University, Durham, North Carolina 27705, United States
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Gandu S, Raza D, Thotamgari S, Pandit S. Association of post-endoscopic retrograde cholangiopancreatography pancreatitis with Inflammatory Bowel Disease. Am J Med Sci 2023. [DOI: 10.1016/s0002-9629(23)00565-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Karande S, Gogtay NJ, More T, Sholapurwala RF, Pandit S, Waghmare S. Economic burden of limited English proficiency: A prevalence-based cost of illness study of its direct, indirect, and intangible costs. J Postgrad Med 2023; 69:27-34. [PMID: 36367030 PMCID: PMC9997600 DOI: 10.4103/jpgm.jpgm_445_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Aims The primary objective of the present study was to evaluate the economic burden of limited English proficiency (LEP) by estimating its direct, indirect, and intangible costs. A secondary objective was to assess the impact of variables on the economic burden. Design and Setting A cross-sectional single-arm descriptive study conducted in a learning disability clinic in a public medical college in Mumbai. Subjects and Methods The study cases (aged ≥8 years and ≤18 years) were recruited by non-probability sampling. A structured questionnaire was used to interview the parent to collect data related to direct and indirect costs. Intangible cost data were collected by documenting the willingness-to-pay value using the contingent valuation technique. Statistical Analysis Used A multivariate regression model was used to assess the impact of predictor variables on the costs. Results The direct, indirect, and intangible costs due to LEP were Indian Rupees (INR) 826,736, 3,828,220, and 1,906,300, respectively. Indirect costs comprised 82.2% of the total costs. Expenditure on tuition and remedial education comprised 39.86% and 14.08% of the indirect and direct costs, respectively. The average annual learning disability clinic costs were INR 2,169,146. The average annual total costs per student were INR 42,102. Higher socioeconomic status was predictive of increased "indirect costs", "total costs", and "intangible costs." Conclusion LEP is a cost-intensive condition (indirect > intangible > direct costs). Non-medical costs are the costliest component of direct costs. Parental loss of earnings is the costliest component of indirect costs.
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Affiliation(s)
- S Karande
- Department of Pediatrics, Seth G.S. Medical College and K.E.M. Hospital, Parel, Mumbai, Maharashtra, India
| | - N J Gogtay
- Department of Clinical Pharmacology, Seth G.S. Medical College and K.E.M. Hospital, Parel, Mumbai, Maharashtra, India
| | - T More
- Department of Pediatrics, Seth G.S. Medical College and K.E.M. Hospital, Parel, Mumbai, Maharashtra, India
| | - R F Sholapurwala
- Department of Pediatrics, Seth G.S. Medical College and K.E.M. Hospital, Parel, Mumbai, Maharashtra, India
| | - S Pandit
- Department of Clinical Pharmacology, Seth G.S. Medical College and K.E.M. Hospital, Parel, Mumbai, Maharashtra, India
| | - S Waghmare
- Department of Pediatrics, Seth G.S. Medical College and K.E.M. Hospital, Parel, Mumbai, Maharashtra, India
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Yadav D, Dangol B, Shrestha N, Pandit S, Nepal A. Post-tonsillectomy Hemorrhage in Patients Receiving Ketorolac Analgesic. Kathmandu Univ Med J (KUMJ) 2023; 21:3-6. [PMID: 37800417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/07/2023]
Abstract
Background Ketorolac, the non-steroidal anti-inflammatory drug, is thought to have less sedation as well as postoperative nausea and vomiting in comparison to opioids, but with higher risk of post-tonsillectomy hemorrhage as reported in some of the literatures. There is no consensus till date in the use of ketorolac in the management of pain following tonsil and adenoid related surgeries. Objective To find out the incidence of hemorrhage following tonsil and adenoid related surgeries in patients receiving ketorolac in postoperative period. Method This is a retrospective chart review of patients undergoing tonsil and adenoid related surgeries who had received ketorolac during April, 2013 to May, 2019 at department of ENT-HNS, Patan Academy of Health Sciences (PAHS), Lalitpur, Nepal. Post-tonsillectomy hemorrhage rate was calculated in pediatric and adult patients. Result During the study period, 103 patients (male - 50 and female - 53) received ketorolac in postoperative period. Tonsillectomy and adenotonsillectomy were performed in 71and 32 patients respectively. Forty-five patients were < 18 years whereas 58 were ≥ 18 years. Most common indication for surgery was recurrent tonsillitis (66/103) followed by adenotonsillar hypertrophy (31/103). Post-tonsillectomy hemorrhage was observed in 15 patients; among them, four out 45 were < 18 years and 11 out of 58 ≥ 18 years. All five patients out of 15, who required surgical intervention for post-tonsillectomy hemorrhage, were ≥ 18 years and were operated for recurrent tonsillitis. Rest of the patients (10/15) were managed conservatively. None of the patients required blood transfusion. Conclusion Ketorolac is not associated with increased risk of post-tonsillectomy hemorrhage in children and can safely be administered. Whereas in adults, recurrent tonsillitis being the most common indication for tonsillectomy, it should be used cautiously.
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Affiliation(s)
- D Yadav
- Department of ENT-HNS, Patan Hospital, Patan Academy of Health Sciences, Lagankhel, Lalitpur, Nepal
| | - B Dangol
- Department of ENT-HNS, Patan Hospital, Patan Academy of Health Sciences, Lagankhel, Lalitpur, Nepal
| | - N Shrestha
- Department of ENT-HNS, Patan Hospital, Patan Academy of Health Sciences, Lagankhel, Lalitpur, Nepal
| | - S Pandit
- Consultant Radiation Oncologist, Kathmandu Cancer Center, Tathali, Nala Road, Bhaktapur, Nepal
| | - A Nepal
- Department of ENT-HNS, Patan Hospital, Patan Academy of Health Sciences, Lagankhel, Lalitpur, Nepal
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Pandit S. 1 H, 15 N and 13 C chemical shift assignments of the N-terminal domain of the two isoforms of the human apolipoprotein E. Biomol NMR Assign 2022; 16:191-196. [PMID: 35451799 DOI: 10.1007/s12104-022-10078-3] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 03/10/2022] [Indexed: 06/14/2023]
Abstract
Apolipoprotein E (ApoE) is one of the major lipid transporters in humans. It is also implicated in pathological conditions like Alzheimer's and cardiovascular diseases. The N-terminal domain of ApoE binds low-density lipoprotein receptors (LDLR) while the C-terminal domain binds to the lipid. I report the backbone and aliphatic side-chain NMR chemical shifts of the N-terminal domain of two isoforms of ApoE, namely ApoE3 NTD (BMRB No. 51,122) and ApoE4 NTD (BMRB No. 51,123) at pH 3.5 (20 °C).
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Affiliation(s)
- Subhendu Pandit
- Tata Institute of Fundamental Research, 36/P, Gopanpally Village, Serilingampally Mandal, Ranga Reddy District, 500107, Hyderabad, India.
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Chawla A, Kriplani A, Pandit S, Choudhary A. Neutrophil-Lymphocyte Ratio (NLR), Platelet-Lymphocyte Ratio (PLR) and Lymphocyte-Monocyte Ratio (LMR) in predicting Systemic Inflammatory Response Syndrome (SIRS) and sepsis after Percutaneous Nephrolithotomy (PNL). Eur Urol 2022. [DOI: 10.1016/s0302-2838(22)00135-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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10
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Ahuja M, Gulati R, Bose T, Katoch N, Pandit S. A rare case of dystrophinopathy: Duchenne muscular dystrophy–Becker muscular dystrophy intermediate complex. J Med Sci Res 2022. [DOI: 10.4103/jmisr.jmisr_9_22] [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: 03/13/2023] Open
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Karande S, Gogtay NJ, More T, Pandit S, Praveenkumar. Parental-perceived health-related quality of life of school students with borderline intellectual functioning: A cross-sectional questionnaire-based study in Mumbai, Maharashtra, India. J Postgrad Med 2022; 68:213-220. [PMID: 35975344 PMCID: PMC9841546 DOI: 10.4103/jpgm.jpgm_310_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Background and Objectives Students with borderline intellectual functioning ("slow learners") underperform in all school subjects. The primary objective of this study was to evaluate the parental-perceived health-related quality of life (HRQoL) of these students. Its secondary objective was to analyze the impact of sociodemographic variables on their HRQoL. Settings and Design Cross-sectional single-arm questionnaire-based study was conducted in the learning disability clinic in a public medical college in Mumbai. Subjects and Methods One hundred parents of slow learners aged 8 to 16 years were recruited by non-probability sampling. Their HRQoL scores were measured using the English DISABKIDS chronic generic module parent (proxy) long-version ("DCGM-37-P") instrument. Statistical Analysis Multiple regression analysis was carried out for determining the "independent" impact that sociodemographic variables had on a poor facet and total score outcomes. Results Clinically significant deficits were detected in 4 facets, namely: small deficit in "social inclusion"; medium deficits in "independence", "emotion", and "social exclusion"; and large deficit in "total score". Multivariate analysis revealed that: (i) being an only child predicted a poor "emotion" and "social exclusion" facet score outcomes (P = 0.039 and P = 0.024, respectively); (ii) being a female predicted a poor "social inclusion" facet score outcome (P = 0.022); and, (iii) studying in a single-gender school predicted a poor "limitation" facet score outcome (P = 0.020). Conclusions Parents of slow learners perceive their psychosocial and total HRQoL to be significantly compromised. There is a need to evaluate the HRQoL of slow learners so that optimum rehabilitation can be facilitated.
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Affiliation(s)
- S Karande
- Department of Pediatrics, Seth G.S. Medical College and K.E.M. Hospital, Mumbai, Maharashtra, India,Address for correspondence: Dr. Karande S, E-mail:
| | - NJ Gogtay
- Department of Clinical Pharmacology, Seth G.S. Medical College and K.E.M. Hospital, Mumbai, Maharashtra, India
| | - T More
- Department of Pediatrics, Seth G.S. Medical College and K.E.M. Hospital, Mumbai, Maharashtra, India
| | - S Pandit
- Department of Clinical Pharmacology, Seth G.S. Medical College and K.E.M. Hospital, Mumbai, Maharashtra, India
| | - Praveenkumar
- Department of Pediatrics, Seth G.S. Medical College and K.E.M. Hospital, Mumbai, Maharashtra, India
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Pandit S, Sharma R. Non invasive assessment of human oocytes and embryos in assisted reproduction: Review on present practices and future trends. Med J Armed Forces India 2022; 78:7-16. [PMID: 35035038 PMCID: PMC8737104 DOI: 10.1016/j.mjafi.2021.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 04/05/2021] [Indexed: 01/03/2023] Open
Abstract
Oocyte and embryo grading is one of the most important steps in assisted reproductive technology to identify the best among cultured embryos for transfer or vitrification. The most commonly used non-invasive method is morphological assessment of gametes and embryos using a microscope. This method despite being simple and cost-effective has interobserver and intraobserver variability and subjectivity and has little to offer about the physiological state of embryos. This review sourced research articles and reviews pertaining to other non-invasive assessment methodologies from Medline and PubMed to collate latest technologies in vogue and identify novel methodologies of the future. The review assesses the current understanding in oocyte and embryo grading and touches upon novel non-invasive techniques and potential biomarkers to identify the best embryo. The latest available literature on time-lapse imaging, hierarchical algorithms, omics (consisting of proteomics and secretomes), miRNAs, mitochondrial RNAs and artificial intelligence has been accessed to summarize the enormous information available, to identify gaps in current interpretations, to identify emerging technologies and to provide direction for future research. This review will greatly benefit anyone practicing assisted reproduction and clinical embryology.
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Affiliation(s)
- Subhendu Pandit
- Professor (Anatomy) & Clinical Embryologist, Army Hospital (R&R), Delhi Cantt, India,Corresponding author.
| | - Rajesh Sharma
- Classified Specialist (Obst & Gynae) & ART Specialist, ART Centre, Army Hospital (R&R), Delhi Cantt, India
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Srivastava I, Moitra P, Fayyaz M, Pandit S, Kampert TL, Fathi P, Alanagh HR, Dighe K, Alafeef M, Vuong K, Jabeen M, Nie S, Irudayaraj J, Pan D. Rational Design of Surface-State Controlled Multicolor Cross-Linked Carbon Dots with Distinct Photoluminescence and Cellular Uptake Properties. ACS Appl Mater Interfaces 2021; 13:59747-59760. [PMID: 34878252 DOI: 10.1021/acsami.1c19995] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We disclose for the first time a facile synthetic methodology for the preparation of multicolor carbon dots (CDs) from a single source barring any chromatographic separations. This was achieved via sequential intraparticle cross-linking of surface abundant carboxylic acid groups on the CDs synthesized from a precursor to control their photoluminescence (PL) spectra as well as affect their degree of cellular internalization in cancer cells. The change in PL spectra with sequential cross-linking was projected by theoretical density functional theory (DFT) studies and validated by multiple characterization tools such as X-ray photoelectron spectroscopy (XPS), PL spectroscopy, ninhydrin assay, etc. The variation in cellular internalization of these cross-linked CDs was demonstrated using inhibitor assays, confocal microscopy, and flow cytometry. We supplemented our findings with high-resolution dark-field imaging to visualize and confirm the colocalization of these CDs into distinct intracellular compartments. Finally, to prove the surface-state controlled PL mechanisms of these cross-linked CDs, we fabricated a triple-channel sensor array for the identification of different analytes including metal ions and biologically relevant proteins.
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Affiliation(s)
- Indrajit Srivastava
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois61801, United States
- Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, Illinois61801, United States
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois61801, United States
| | - Parikshit Moitra
- Departments of Diagnostic Radiology and Nuclear Medicine and Pediatrics, University of Maryland Baltimore, Health Sciences Facility III, 670W Baltimore Street, Baltimore, Maryland21201, United States
- Department of Chemical, Biochemical and Environmental Engineering, University of Maryland Baltimore County, Interdisciplinary Health Sciences Facility, 1000 Hilltop Circle, Baltimore, Maryland21250, United States
| | - Muhammad Fayyaz
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois61801, United States
- Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, Illinois61801, United States
| | - Subhendu Pandit
- Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, Illinois61801, United States
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois61801, United States
| | - Taylor L Kampert
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois61801, United States
- Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, Illinois61801, United States
| | - Parinaz Fathi
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois61801, United States
- Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, Illinois61801, United States
| | - Hamideh Rezvani Alanagh
- Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, Illinois61801, United States
| | - Ketan Dighe
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois61801, United States
- Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, Illinois61801, United States
- Department of Chemical, Biochemical and Environmental Engineering, University of Maryland Baltimore County, Interdisciplinary Health Sciences Facility, 1000 Hilltop Circle, Baltimore, Maryland21250, United States
| | - Maha Alafeef
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois61801, United States
- Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, Illinois61801, United States
- Departments of Diagnostic Radiology and Nuclear Medicine and Pediatrics, University of Maryland Baltimore, Health Sciences Facility III, 670W Baltimore Street, Baltimore, Maryland21201, United States
- Department of Chemical, Biochemical and Environmental Engineering, University of Maryland Baltimore County, Interdisciplinary Health Sciences Facility, 1000 Hilltop Circle, Baltimore, Maryland21250, United States
- Biomedical Engineering Department, Jordan University of Science and Technology, Irbid22110, Jordan
| | - Katherine Vuong
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois61801, United States
- Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, Illinois61801, United States
| | - Musarrat Jabeen
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois61801, United States
- Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, Illinois61801, United States
| | - Shuming Nie
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois61801, United States
- Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, Illinois61801, United States
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois61801, United States
| | - Joseph Irudayaraj
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois61801, United States
- Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, Illinois61801, United States
| | - Dipanjan Pan
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois61801, United States
- Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, Illinois61801, United States
- Departments of Diagnostic Radiology and Nuclear Medicine and Pediatrics, University of Maryland Baltimore, Health Sciences Facility III, 670W Baltimore Street, Baltimore, Maryland21201, United States
- Department of Chemical, Biochemical and Environmental Engineering, University of Maryland Baltimore County, Interdisciplinary Health Sciences Facility, 1000 Hilltop Circle, Baltimore, Maryland21250, United States
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Behera P, Singh KK, Pandit S, Saha D, Saini DK, De M. Machine Learning-Assisted Array-Based Detection of Proteins in Serum Using Functionalized MoS 2 Nanosheets and Green Fluorescent Protein Conjugates. ACS Appl Nano Mater 2021; 4:3843-3851. [PMID: 37556232 PMCID: PMC8043198 DOI: 10.1021/acsanm.1c00244] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 03/19/2021] [Indexed: 05/08/2023]
Abstract
Abnormal concentrations of a specific protein or the presence of some biomarker proteins may indicate life-threatening diseases. Pattern-based detection of specific analytes using affinity-regulated receptors is one of the potential alternatives to specific antigen-antibody-based detection. In this report, we have schemed a sensor array by using various functionalized two-dimensional (2D)-MoS2 nanosheets and green fluorescent protein (GFP) as the receptor and the signal transducer, respectively. Two-dimensional MoS2 has been used as a promising candidate for recognition of the bioanalytes because of its high surface-to-volume ratio compared to those of other nanomaterials. Easy surface tunability of this material provides additional advantages to analyze the target of interest. The optimized 2D-MoS2-GFP conjugates are able to discriminate 15 different proteins at 50 nM concentration with a detection limit of 1 nM. Moreover, proteins in the binary mixture and in the presence of serum were discriminated successfully. Ten different proteins in serum media at relevant concentrations were classified successfully with 100% jackknifed classification accuracy, which proves the potentiality of the above system. We have also implemented and discussed the implication of using different machine learning models on the pattern recognition problem associated with array-based sensing.
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Affiliation(s)
- Pradipta Behera
- Department of Organic Chemistry, Indian
Institute of Science, Bangalore 560012, India
| | - Krishna Kumar Singh
- Vascular Biology Center, Augusta
University, Augusta, Georgia 30912, United States
- Molecular Reproduction, Development and Genetics,
Indian Institute of Science, Bangalore 560012,
India
| | - Subhendu Pandit
- Department of Chemistry, University of
Illinois at Urbana-Champaign, Urbana, Illinois 61801, United
States
| | - Diptarka Saha
- Department of Statistics, University of
Illinois at Urbana-Champaign, Urbana, Illinois 61801, United
States
| | - Deepak Kumar Saini
- Molecular Reproduction, Development and Genetics,
Indian Institute of Science, Bangalore 560012,
India
| | - Mrinmoy De
- Department of Organic Chemistry, Indian
Institute of Science, Bangalore 560012, India
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15
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Affiliation(s)
- T Gailson
- Department of Pediatrics, Government Multi Specialty Hospital (GMSH)-16, Chandigarh 160016, India
| | - S Pandit
- Department of Pediatrics, Government Multi Specialty Hospital (GMSH)-16, Chandigarh 160016, India
| | - S Rathi
- Department of Pediatrics, Government Multi Specialty Hospital (GMSH)-16, Chandigarh 160016, India
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16
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Gailson T, Pandit S, Chandrasekaran S. Griscelli syndrome type 2. QJM 2020; 113:137. [PMID: 31199490 DOI: 10.1093/qjmed/hcz144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- T Gailson
- Department of Pediatrics, Government Multi-Specialty Hospital, Sector 16, Chandigarh, India
| | - S Pandit
- Department of Pediatrics, Government Multi-Specialty Hospital, Sector 16, Chandigarh, India
| | - S Chandrasekaran
- Department of Pediatrics, Government Multi-Specialty Hospital, Sector 16, Chandigarh, India
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Pandit S. A descriptive study of community-based profile and attitudes of body donors of an urban conglomeration in Western India. Med J Armed Forces India 2019; 75:406-414. [PMID: 31719735 DOI: 10.1016/j.mjafi.2018.06.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 06/20/2018] [Indexed: 10/28/2022] Open
Abstract
Background Body donation is considered an altruistic act done by people for advancement of science. There has been a significant depreciation in the availability of cadavers for teaching and research all over the world. Unlike India, many countries have studied the profile and attitudes of potential body donors to improve body donation. With a huge health sector, this Indian study studied the profile and attitudes of body donors and their role in aiding science through body donation. Methods Four hundred thirty-one survey forms with informed consent were sent to registered body donors. The questionnaire focused on demographic parameters and their perception on body donation. The data were collated, compared and interpreted with similar studies done worldwide. Results The study shows an interesting pattern among the Indian donors in comparison to the West. An Indian donor is a male individual in 70s, highly educated and religious with good social background. Despite many similarities, there are important distinguishing features unique to our country and many myths surrounding body donation. Conclusion The Indian donor is highly educated male and charitable with strong belief in God. He believes in aiding medical science through body donation.
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Affiliation(s)
- Subhendu Pandit
- Professor & Classified Specialist (Anatomy), Assisted Reproductive Technology Centre, Army Hospital (R&R), Delhi Cantt 110010, India
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18
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Pandit S, Banerjee T, Srivastava I, Nie S, Pan D. Machine Learning-Assisted Array-Based Biomolecular Sensing Using Surface-Functionalized Carbon Dots. ACS Sens 2019; 4:2730-2737. [PMID: 31529960 DOI: 10.1021/acssensors.9b01227] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Fluorescent array-based sensing is an emerging differential sensing platform for sensitive detection of analytes in a complex environment without involving a conventional "lock and key" type-specific interaction. These sensing techniques mainly rely on different optical pattern generation from a sensor array and their pattern recognition to differentiate analytes. Currently emerging, compelling pattern-recognition method, Machine Learning (ML), enables a machine to "learn" a pattern by training without having the recognition method explicitly programmed into it. Thus, ML has an enormous potential to analyze these sensing data better than widely used statistical pattern-recognition methods. Here, an array-based sensor using easy-to-synthesize carbon dots with varied surface functionality is reported, which can differentiate between eight different proteins at 100 nM concentration. The utility of using machine learning algorithms in pattern recognition of fluorescence signals from the array has also been demonstrated. In analyzing the array-based sensing data, Machine Learning algorithms like "Gradient-Boosted Trees" have achieved a 100% prediction efficiency compared to inferior-performing classical statistical method "Linear Discriminant Analysis".
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Affiliation(s)
- Subhendu Pandit
- Biomedical Research Centre, Mills Breast Cancer Research Institute and Carle Foundation Hospital, Urbana, Illinois 61801, United States
| | | | - Indrajit Srivastava
- Biomedical Research Centre, Mills Breast Cancer Research Institute and Carle Foundation Hospital, Urbana, Illinois 61801, United States
| | - Shuming Nie
- Biomedical Research Centre, Mills Breast Cancer Research Institute and Carle Foundation Hospital, Urbana, Illinois 61801, United States
| | - Dipanjan Pan
- Biomedical Research Centre, Mills Breast Cancer Research Institute and Carle Foundation Hospital, Urbana, Illinois 61801, United States
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19
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Pandit S, Thomas MR, Banerjee A, Angadi M, Kumar S, Tandon A, Shrivastava T, Bandopadhyay D, Jamwal VDS, Basannar DR. A crossover comparative study to assess efficacy of competency based medical education (CBME) and the traditional structured (TS) method in selected competencies of living anatomy of first year MBBS curriculum: A pilot study. Med J Armed Forces India 2019; 75:259-265. [PMID: 31388227 PMCID: PMC6676323 DOI: 10.1016/j.mjafi.2018.01.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Accepted: 01/18/2018] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Competency based medical education (CBME) is outcome based teaching methodology where a student learns a set of measurable competencies for early clinical exposure. Inspite of ample resources on CBME, there are limited studies on its implementation. This study will try to demonstrate improvement in the performance of students using CBME as a teaching tool over the traditional structured method (TS). METHODS Forty student volunteers were chosen and divided into two groups. The crossover design exposed the group of students to CBME and TS spread over two periods with a wash out period in between. The intervention group was exposed to selected list of competencies in living Anatomy with feedbacks and formative assessments. The summative assessments were held at the end of each period. RESULTS The mean scores of CBME and TS in group 1 is 130.625 and 113.65 while in group 2 is 139.425 and 112.075 respectively. The treatment and period effect is significant. Estimate of treatment effect is 22.1625. The average improvement in treatment scores is by 11%. Two tailed paired sample T test reveals significant improvement in the scores post intervention. CONCLUSION CBME method produces better performance of the students in the competencies of living anatomy.
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Affiliation(s)
- Subhendu Pandit
- Classified Specialist & Professor (Anatomy), Army Hospital (R&R), Delhi Cantt 110010, India
| | - Merlin R Thomas
- Resident, Department of Anatomy, Armed Forces Medical College, Pune 411040, India
| | - A Banerjee
- Resident, Department of Anatomy, Armed Forces Medical College, Pune 411040, India
| | - Mohan Angadi
- Resident, Department of Anatomy, Armed Forces Medical College, Pune 411040, India
| | - Sushil Kumar
- Professor and Head, Department of Anatomy, Armed Forces Medical College, Pune 411040, India
| | - Aseem Tandon
- Associate Professor, Department of Anatomy, Armed Forces Medical College, Pune 411040, India
| | - Tripti Shrivastava
- Associate Professor, Department of Anatomy, Armed Forces Medical College, Pune 411040, India
| | - Debasis Bandopadhyay
- Assistant Professor, Department of Anatomy, Armed Forces Medical College, Pune 411040, India
| | - V D S Jamwal
- Assistant Professor, Department of Anatomy, Armed Forces Medical College, Pune 411040, India
| | - D R Basannar
- Scientist 'F', Department of Community Medicine, Armed Forces Medical College, Pune 411040, India
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Tiwari VP, Pandit S, Vallurupalli P. Exchangeable deuterons introduce artifacts in amide 15N CEST experiments used to study protein conformational exchange. J Biomol NMR 2019; 73:43-48. [PMID: 30661150 DOI: 10.1007/s10858-018-00223-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 12/27/2018] [Indexed: 06/09/2023]
Abstract
Protein molecules sample different conformations in solution and characterizing these conformations is crucial to understanding protein function. 15N CEST experiments are now routinely used to study slow conformational exchange of protein molecules between a 'visible' major state and 'invisible' minor states. These experiments have also been adapted to measure the solvent exchange rates of amide protons by exploiting the one bond deuterium isotope effect on the amide 15N chemical shifts. However at moderately high temperatures (~ 50 °C) that are sometimes required to populate protein minor conformers to levels (~ 1%) that can be detected by CEST experiments solvent H/D exchange can lead to 'dips' in low B115N CEST profiles that can be wrongly assigned to the conformational exchange process being characterized. This is demonstrated in the case of ~ 18 kDa T4 Lysozyme (T4L) at 50 °C and the ~ 11 kDa E. coli hibernation promoting factor (HPF) at 52 °C. This problem is trivially solved by eliminating the exchangeable deuterons in the solvent by using either an external D2O lock or by using a small amount (~ 1-3%) of a molecule like d6-DMSO that does not contain exchangeable deuterons to lock the spectrometer.
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Affiliation(s)
- Ved Prakash Tiwari
- TIFR Centre for Interdisciplinary Sciences, Tata Institute of Fundamental Research Hyderabad, 36/P, Gopanpally Village, Serilingampally Mandal, Ranga Reddy District, Hyderabad, Telangana, 500107, India
| | - Subhendu Pandit
- TIFR Centre for Interdisciplinary Sciences, Tata Institute of Fundamental Research Hyderabad, 36/P, Gopanpally Village, Serilingampally Mandal, Ranga Reddy District, Hyderabad, Telangana, 500107, India
| | - Pramodh Vallurupalli
- TIFR Centre for Interdisciplinary Sciences, Tata Institute of Fundamental Research Hyderabad, 36/P, Gopanpally Village, Serilingampally Mandal, Ranga Reddy District, Hyderabad, Telangana, 500107, India.
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21
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Karunakaran S, Pandit S, Basu B, De M. Simultaneous Exfoliation and Functionalization of 2H-MoS2 by Thiolated Surfactants: Applications in Enhanced Antibacterial Activity. J Am Chem Soc 2018; 140:12634-12644. [DOI: 10.1021/jacs.8b08994] [Citation(s) in RCA: 124] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Subbaraj Karunakaran
- Department of Organic Chemistry, Laboratory for Biomaterials, Materials Research Centre, Centre for Biosystems Science and Engineering, Indian Institute of Science, Bangalore 560012, India
| | - Subhendu Pandit
- Department of Organic Chemistry, Laboratory for Biomaterials, Materials Research Centre, Centre for Biosystems Science and Engineering, Indian Institute of Science, Bangalore 560012, India
| | - Bikramjit Basu
- Department of Organic Chemistry, Laboratory for Biomaterials, Materials Research Centre, Centre for Biosystems Science and Engineering, Indian Institute of Science, Bangalore 560012, India
| | - Mrinmoy De
- Department of Organic Chemistry, Laboratory for Biomaterials, Materials Research Centre, Centre for Biosystems Science and Engineering, Indian Institute of Science, Bangalore 560012, India
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22
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Affiliation(s)
- Sk Rajab Ali
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, India
| | - Subhendu Pandit
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, India
| | - Mrinmoy De
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, India
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Abstract
Boron nitride has structural characteristics similar to carbon 2D materials (graphene and its derivatives) and its layered structure has been exploited to form different nanostructures such as nanohorns, nanotubes, nanoparticles and nanosheets.
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Affiliation(s)
- A. Merlo
- Department of Applied Science and Technology
- Politecnico di Torino
- Torino 10129
- Italy
| | - V. R. S. S. Mokkapati
- Systems and Synthetic Biology
- Department of Biology and Biological Engineering
- Chalmers University of Technology
- Goteborg 41329
- Sweden
| | - S. Pandit
- Systems and Synthetic Biology
- Department of Biology and Biological Engineering
- Chalmers University of Technology
- Goteborg 41329
- Sweden
| | - I. Mijakovic
- Systems and Synthetic Biology
- Department of Biology and Biological Engineering
- Chalmers University of Technology
- Goteborg 41329
- Sweden
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24
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Girish YR, Pandit S, Pandit S, De M. Graphene Oxide as a Carbocatalyst for a Diels-Alder Reaction in an Aqueous Medium. Chem Asian J 2017; 12:2393-2398. [DOI: 10.1002/asia.201701072] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 08/14/2017] [Indexed: 12/26/2022]
Affiliation(s)
- Yarabhally R. Girish
- Department of Organic Chemistry; Indian Institute of Science; Bangalore 560012 Karnataka India
| | - Subrata Pandit
- Department of Organic Chemistry; Indian Institute of Science; Bangalore 560012 Karnataka India
| | - Subhendu Pandit
- Department of Organic Chemistry; Indian Institute of Science; Bangalore 560012 Karnataka India
| | - Mrinmoy De
- Department of Organic Chemistry; Indian Institute of Science; Bangalore 560012 Karnataka India
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26
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Ahuja M, Sharma R, Tandon A, Pandit S. Comparative study of implantation rate in cleavage embryo transfer vs blastocyst transfer among couples undergoing in vitro fertilization for treatment of infertility. J ANAT SOC INDIA 2017. [DOI: 10.1016/j.jasi.2017.08.103] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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27
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Beastall JE, Hadden WA, Pandit S. Ventricular Aneurysm as a cause for post traumatic tachycardia – a case report. Scott Med J 2016. [DOI: 10.1258/rsmsmj.51.4.49d] [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: 11/18/2022]
Abstract
The purpose of this case is to illustrate an interesting cause of a common symptom. It is designed to make the reader aware of the possibility of post traumatic ventricular aneurysm. It also illustrates the difficulty involved in making an unusual diagnosis in the Intensive Care setting.
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Affiliation(s)
- J E Beastall
- Dept of Orthopaedic Surgery, Perth Royal Infirmary, Scotland, UK
| | - W A Hadden
- Dept of Orthopaedic Surgery, Perth Royal Infirmary, Scotland, UK
| | - S Pandit
- Dept of Orthopaedic Surgery, Perth Royal Infirmary, Scotland, UK
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28
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Pandit S, Karunakaran S, Boda SK, Basu B, De M. High Antibacterial Activity of Functionalized Chemically Exfoliated MoS 2. ACS Appl Mater Interfaces 2016; 8:31567-31573. [PMID: 27933975 DOI: 10.1021/acsami.6b10916] [Citation(s) in RCA: 109] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
In view of the implications of inherent resistance of pathogenic bacteria, especially ESKAPE pathogens toward most of the commercially available antibiotics and the importance of these bacteria-induced biofilm formation leading to chronic infection, it is important to develop new-generation synthetic materials with greater efficacy toward antibacterial property. In addressing this issue, this paper reports a proof-of-principle study to evaluate the potential of functionalized two-dimensional chemically exfoliated MoS2 (ce-MoS2) toward inhibitory and bactericidal property against two representative ESKAPE pathogenic strain-a Gram-positive Staphylococcus aureus (MRSA) and a Gram-negative Pseudomonas aeruginosa. More significantly, the mechanistic study establishes a different extent of oxidative stress together with rapid membrane depolarization in contact with ce-MoS2 having ligands of varied charge and hydrophobicity. The implication of our results is discussed in the light of the lack of survivability of planktonic bacteria and biofilm destruction in vitro. A comparison with widely used small molecules and other nanomaterial-based therapeutics conclusively establishes a better efficacy of 2D ce-MoS2 as a new class of antibiotics.
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Affiliation(s)
- Subhendu Pandit
- Department of Organic Chemistry, ‡Laboratory for Biomaterials, Materials Research Centre, and ∥Centre for Biosystems Science and Engineering, Indian Institute of Science , Bangalore 560012, India
| | - Subbaraj Karunakaran
- Department of Organic Chemistry, ‡Laboratory for Biomaterials, Materials Research Centre, and ∥Centre for Biosystems Science and Engineering, Indian Institute of Science , Bangalore 560012, India
| | - Sunil Kumar Boda
- Department of Organic Chemistry, ‡Laboratory for Biomaterials, Materials Research Centre, and ∥Centre for Biosystems Science and Engineering, Indian Institute of Science , Bangalore 560012, India
| | - Bikramjit Basu
- Department of Organic Chemistry, ‡Laboratory for Biomaterials, Materials Research Centre, and ∥Centre for Biosystems Science and Engineering, Indian Institute of Science , Bangalore 560012, India
| | - Mrinmoy De
- Department of Organic Chemistry, ‡Laboratory for Biomaterials, Materials Research Centre, and ∥Centre for Biosystems Science and Engineering, Indian Institute of Science , Bangalore 560012, India
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Banerjee A, Srivastava B T, Kumar S, Tandon A, Pandit S. Agenesis of dorsal wall of sacrum: A case report. J ANAT SOC INDIA 2016. [DOI: 10.1016/j.jasi.2016.08.401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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30
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Katre P, Joshi S, Bhat DS, Deshmukh M, Gurav N, Pandit S, Lubree H, Marczewski S, Bennett C, Gruca L, Kalyanaraman K, Naik SS, Yajnik CS, Kalhan SC. Effect of multi-nutrient insufficiency on markers of one carbon metabolism in young women: response to a methionine load. Eur J Clin Nutr 2016; 70:687-93. [PMID: 26373967 PMCID: PMC4794418 DOI: 10.1038/ejcn.2015.155] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Revised: 07/30/2015] [Accepted: 07/31/2015] [Indexed: 11/08/2022]
Abstract
BACKGROUND/OBJECTIVES Multi-nutrient insufficiencies as a consequence of nutritional and economic factors are common in India and other developing countries. We have examined the impact of multi-nutrient insufficiency on markers of one carbon (1C) metabolism in the blood, and response to a methionine load in clinically healthy young women. SUBJECTS/METHODS Young women from Pune, India (n=10) and Cleveland, USA (n=13) were studied. Blood samples were obtained in the basal state and following an oral methionine load (50 mg/kg of body weight in orange juice). Plasma concentrations of vitamin B12, folate and B6 were measured in the basal state. The effect of methionine load on the levels of methionine, total homocysteine, cysteine, glutathione and amino acids was examined. RESULTS Indian women were significantly shorter and lighter compared with the American women and had lower plasma concentration of vitamins B12, folate and B6, essential amino acids and glutathione, but higher concentration of total homocysteine. The homocysteine response to methionine load was higher in Indian women. The plasma concentrations of glycine and serine increased in the Indian women after methionine (in juice) load. A significant negative correlation between plasma B6 and homocysteine (r= -0.70), and plasma folate and glycine and serine levels were observed in the Indian group (P<0.05) but not in the American group. CONCLUSIONS Multi-nutrient insufficiency in the Indian women caused unique changes in markers of whole body protein and 1C metabolism. These data would be useful in developing nutrient intervention strategies.
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Affiliation(s)
- P Katre
- Kamalnayan Bajaj Diabetology Research Centre, King Edward Memorial Hospital Research Centre, Pune, India
| | - S Joshi
- Kamalnayan Bajaj Diabetology Research Centre, King Edward Memorial Hospital Research Centre, Pune, India
| | - D S Bhat
- Kamalnayan Bajaj Diabetology Research Centre, King Edward Memorial Hospital Research Centre, Pune, India
| | - M Deshmukh
- Kamalnayan Bajaj Diabetology Research Centre, King Edward Memorial Hospital Research Centre, Pune, India
| | - N Gurav
- Kamalnayan Bajaj Diabetology Research Centre, King Edward Memorial Hospital Research Centre, Pune, India
| | - S Pandit
- Kamalnayan Bajaj Diabetology Research Centre, King Edward Memorial Hospital Research Centre, Pune, India
| | - H Lubree
- Kamalnayan Bajaj Diabetology Research Centre, King Edward Memorial Hospital Research Centre, Pune, India
| | - S Marczewski
- Department of Pathobiology, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - C Bennett
- Department of Pathobiology, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - L Gruca
- Department of Pathobiology, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - K Kalyanaraman
- Kamalnayan Bajaj Diabetology Research Centre, King Edward Memorial Hospital Research Centre, Pune, India
| | - S S Naik
- Kamalnayan Bajaj Diabetology Research Centre, King Edward Memorial Hospital Research Centre, Pune, India
| | - C S Yajnik
- Kamalnayan Bajaj Diabetology Research Centre, King Edward Memorial Hospital Research Centre, Pune, India
| | - S C Kalhan
- Department of Pathobiology, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH, USA
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Das A, Pandit S, Das SK, Basuthakur S, Das S. A Rare Case of Bilateral Aspergillomas in a Patient of Ankylosing Spondylitis. Kathmandu Univ Med J (KUMJ) 2016; 14:177-180. [PMID: 28166077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Pulmonary involvement by Aspergillus sp. mainly includes allergic bronchopulmonary aspergillosis, aspergilloma, and invasive aspergillosis. Aspergilloma (Fungal ball) is the most common form of aspergillous pulmonary involvement, which occurs in preexisting pulmonary cavities, especially secondary to pulmonary tuberculosis. Ankylosing spondylitis is a rare cause of upper lobe fibro-cavitary lesions in pulmonary parenchyma. It may also lead to development of fungal balls in pulmonary cavities. Most common presentation is mild to massive hemoptysis; dyspnoea, chronic cough, expectoration may be other presentation; even the patient may remain asymptomatic. Intaracavitary mobile mass is a valuable sign for fungal ball, best detected by computed tomography (CT) scan of thorax. Lobectomy is the treatment of choice to stop the hemoptysis, if the general condition of the patient is fit; otherwise associated co-morbidities complicate the post-operative scenario. In this situation, bronchial artery embolization may be used as a temporary measure to control hemoptysis. Here, we report a case of bilateral aspergillomas within the cavities located in upper lobes of both lungs in a 74 years old male who was suffering from ankylosing spondylitis for last 42 years.
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Affiliation(s)
- A Das
- Department of Pulmonary Medicine, Medical College, Kolkata, West Bengal, India
| | - S Pandit
- Department of Pulmonary Medicine, Medical College, Kolkata, West Bengal, India
| | - S K Das
- Department of Pulmonary Medicine, Medical College, Kolkata, West Bengal, India
| | - S Basuthakur
- Department of Pulmonary Medicine, Medical College, Kolkata, West Bengal, India
| | - S Das
- Department of Pulmonary Medicine, Medical College, Kolkata, West Bengal, India
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Angadi M, Tandon A, Pandit S, Bhatnagar R. Supernumerary head of biceps brachii and branching pattern of the musculocutaneous nerve. Med J DY Patil Univ 2016. [DOI: 10.4103/0975-2870.177684] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Abstract
Microbial secretion of siderophores for iron uptake can be employed as an efficient strategy to smuggle in bactericidal agents by conjugation to iron.
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Affiliation(s)
- Sunil Kumar Boda
- Laboratory for Biomaterials – Materials Research Centre
- Indian Institute of Science
- Bangalore – 560012
- India
| | - Subhendu Pandit
- Laboratory for Biomaterials – Materials Research Centre
- Indian Institute of Science
- Bangalore – 560012
- India
| | - Aditya Garai
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore – 560012
- India
| | - Debnath Pal
- Department of Computational and Data Sciences
- Indian Institute of Science
- Bangalore – 560012
- India
| | - Bikramjit Basu
- Laboratory for Biomaterials – Materials Research Centre
- Indian Institute of Science
- Bangalore – 560012
- India
- Centre for Biosystems Science and Engineering
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Narayanasamy G, Pyakuryal AP, Pandit S, Vincent J, Lee C, Mavroidis P, Papanikolaou N, Kudrimoti M, Sio TT. Radiobiological evaluation of intensity modulated radiation therapy treatments of patients with head and neck cancer: A dual-institutional study. J Med Phys 2015; 40:165-9. [PMID: 26500403 PMCID: PMC4594386 DOI: 10.4103/0971-6203.165075] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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] [Indexed: 12/25/2022] Open
Abstract
In clinical practice, evaluation of clinical efficacy of treatment planning stems from the radiation oncologist's experience in accurately targeting tumors, while keeping minimal toxicity to various organs at risk (OAR) involved. A more objective, quantitative method may be raised by using radiobiological models. The purpose of this work is to evaluate the potential correlation of OAR-related toxicities to its radiobiologically estimated parameters in simultaneously integrated boost (SIB) intensity modulated radiation therapy (IMRT) plans of patients with head and neck tumors at two institutions. Lyman model for normal tissue complication probability (NTCP) and the Poisson model for tumor control probability (TCP) models were used in the Histogram Analysis in Radiation Therapy (HART) analysis. In this study, 33 patients with oropharyngeal primaries in the head and neck region were used to establish the correlation between NTCP values of (a) bilateral parotids with clinically observed rates of xerostomia, (b) esophagus with dysphagia, and (c) larynx with dysphagia. The results of the study indicated a strong correlation between the severity of xerostomia and dysphagia with Lyman NTCP of bilateral parotids and esophagus, respectively, but not with the larynx. In patients without complications, NTCP values of these organs were negligible. Using appropriate radiobiological models, the presence of a moderate to strong correlation between the severities of complications with NTCP of selected OARs suggested that the clinical outcome could be estimated prior to treatment.
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Affiliation(s)
- G Narayanasamy
- Department of Radiation Oncology, University of Texas Health Science Center, San Antonio, TX, USA
| | - A P Pyakuryal
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - S Pandit
- Department of Radiation Oncology, BP Koirala Memorial Cancer Hospital, Bharatpur, Nepal
| | - J Vincent
- Department of Radiation Oncology, University of Texas Health Science Center, San Antonio, TX, USA
| | - C Lee
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - P Mavroidis
- Department of Radiation Oncology, University of Texas Health Science Center, San Antonio, TX, USA
| | - N Papanikolaou
- Department of Radiation Oncology, University of Texas Health Science Center, San Antonio, TX, USA
| | - M Kudrimoti
- Department of Radiation Medicine, University of Kentucky, Lexington, KY, USA
| | - T T Sio
- Department of Radiation Oncology, Mayo Clinic, Rochester, MN, USA
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Pandit S, Ahuja MS. Gross and microscopic study of insertion of levator palpebrae superioris and its anatomical correlation in superior palpebral crease formation and its clinical relevance. Med J Armed Forces India 2015; 71:330-6. [PMID: 26663959 PMCID: PMC4646910 DOI: 10.1016/j.mjafi.2015.07.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Accepted: 07/09/2015] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND To study insertion of LPS and correlate anatomically the formation of superior palpebral crease and its clinical relevance in section of Indian population. METHODS Twenty-five human eyelids from cadavers ranging from 15-80 years were studied by dissection and histology. RESULTS The levator aponeurosis traverses through interfascicular space of orbicularis oculi with twenty four inserting into subcutaneous tissue. Low septo aponeurotic sling or preaponeurotic fat was not observed. Lower one third tarsal insertion seen in twenty four specimens. Fibres become denser as it reaches the connective tissue anterior to tarsal plate. The crease was at different levels in relation to the tarsal insertion. CONCLUSION The aponeurosis insertion is either to the skin, the subcutaneous tissue or into the interfascicular space of the orbicularis. The present study reaffirms the insertion of LPS to the subcutaneous tissue of the eyelid with an extension reaching lower one third of the tarsal plate. The tissues in the anterior tarsal plate are closely packed but to act as a single complex to form a dynamic crease has not been confirmed in the study. No gross or histological difference was observed in the skin of the eyelid in the vicinity of the crease. The pattern of insertion of LPS aponeurosis plays a direct role in the formation of superior palpebral crease an important role in surgeries for Ptosis. The eyelids studied were of Indian origin with crease, and further comparative studies needs to be done for the precise anatomical explanation of single fold eyelids.
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Affiliation(s)
- Subhendu Pandit
- Associate Professor, Dept of Anatomy, Armed Forces Medical College, Pune 411040, India
| | - Manish Singh Ahuja
- Ex- Professor, Dept of Anatomy, Armed Forces Medical College, Pune 411040, India
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Pandit S, Biswas S, Jana U, De RK, Mukhopadhyay SC, Biswas TK. Clinical evaluation of purified Shilajit on testosterone levels in healthy volunteers. Andrologia 2015; 48:570-5. [PMID: 26395129 DOI: 10.1111/and.12482] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/27/2015] [Indexed: 11/29/2022] Open
Affiliation(s)
- S. Pandit
- Research Unit Department of Health and Family Welfare J. B. Roy State Ayurvedic Medical College and Hospital Government of West Bengal The West Bengal University of Health Sciences Kolkata India
| | - S. Biswas
- Research Unit Department of Health and Family Welfare J. B. Roy State Ayurvedic Medical College and Hospital Government of West Bengal The West Bengal University of Health Sciences Kolkata India
| | - U. Jana
- Research Unit Department of Health and Family Welfare J. B. Roy State Ayurvedic Medical College and Hospital Government of West Bengal The West Bengal University of Health Sciences Kolkata India
| | - R. K. De
- Research Unit Department of Health and Family Welfare J. B. Roy State Ayurvedic Medical College and Hospital Government of West Bengal The West Bengal University of Health Sciences Kolkata India
| | - S. C. Mukhopadhyay
- Research Unit Department of Health and Family Welfare J. B. Roy State Ayurvedic Medical College and Hospital Government of West Bengal The West Bengal University of Health Sciences Kolkata India
| | - T. K. Biswas
- Research Unit Department of Health and Family Welfare J. B. Roy State Ayurvedic Medical College and Hospital Government of West Bengal The West Bengal University of Health Sciences Kolkata India
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Pandit S, Kumar S, Mishra BK. Comparative study of anatomical specimens using plastination by araldite HY103, polypropylene resin, 6170H19 Orthocryl and silicone - A qualitative study. Med J Armed Forces India 2015; 71:246-53. [PMID: 26288492 DOI: 10.1016/j.mjafi.2015.04.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 12/18/2014] [Accepted: 04/09/2015] [Indexed: 10/23/2022] Open
Abstract
BACKGROUND Most of the organs and tissues are preserved in formalin with its own set of disadvantages. Plastination is a unique method of permanently preserving tissue in a life like state. Plastination developed by western authorities is a labour and equipment intensive affair. Most common polymer used is S10, however this study uses easily available alternative polymers for plastination. METHOD Various polymers like Epoxy resins, Polypropylene resins, Orthocryl and silicone were used in plastinating the anatomical specimens. Specific methods were used for solid, hollow organs and brain specimens. The specimens were made to undergo stages of fixation, dehydration, impregnation and curing. The results were studied and interpreted under various parameters. RESULTS The results were interpreted under various parameters like shrinkage, retention of colour, odour, pliability and retention of gross anatomy. The study concluded that Orthocryl and Epoxy resins retained maximum colour with minimal shrinkage while maximum discolouration was with polypropylene plastinates. Brain sections were best preserved in Orthocryl. CONCLUSION The study concluded that indigenous methods and materials can produce quality plastinates which can be an important adjunct to traditional methods of teaching however more studies need to be done for refinement.
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Affiliation(s)
- Subhendu Pandit
- Associate Professor, Dept of Anatomy, Armed Forces Medical College, Pune 411040, India
| | - Sushil Kumar
- Professor and Head, Dept of Anatomy, Armed Forces Medical College, Pune 411040, India
| | - B K Mishra
- Professor and Head, Dept of Anatomy, Army College of Medical Sciences, New Delhi, India
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Pandit S, Cai JN, Song KY, Jeon JG. Identification of anti-biofilm components in Withania somnifera and their effect on virulence of Streptococcus mutans biofilms. J Appl Microbiol 2015; 119:571-81. [PMID: 25976122 DOI: 10.1111/jam.12851] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [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: 12/03/2014] [Revised: 04/14/2015] [Accepted: 05/12/2015] [Indexed: 12/21/2022]
Abstract
AIMS The aim of this study was to identify components of the Withania somnifera that could show anti-virulence activity against Streptococcus mutans biofilms. METHODS AND RESULTS The anti-acidogenic activity of fractions separated from W. somnifera was compared, and then the most active anti-acidogenic fraction was chemically characterized using gas chromatography-mass spectroscopy. The effect of the identified components on the acidogenicity, aciduricity and extracellular polymeric substances (EPS) formation of S. mutans UA159 biofilms was evaluated. The change in accumulation and acidogenicity of S. mutans UA159 biofilms by periodic treatments (10 min per treatment) with the identified components was also investigated. Of the fractions, n-hexane fraction showed the strongest anti-acidogenic activity and was mainly composed of palmitic, linoleic and oleic acids. Of the identified components, linoleic and oleic acids strongly affected the acid production rate, F-ATPase activity and EPS formation of the biofilms. Periodic treatment with linoleic and oleic acids during biofilm formation also inhibited the biofilm accumulation and acid production rate of the biofilms without killing the biofilm bacteria. CONCLUSIONS These results suggest that linoleic and oleic acids may be effective agents for restraining virulence of S. mutans biofilms. SIGNIFICANCE AND IMPACT OF THE STUDY Linoleic and oleic acids may be promising agents for controlling virulence of cariogenic biofilms and subsequent dental caries formation.
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Affiliation(s)
- S Pandit
- Department of Preventive Dentistry, School of Dentistry, Institute of Oral Bioscience and BK 21 Plus Program, Chonbuk National University, Jeonju, Korea
| | - J N Cai
- Department of Preventive Dentistry, School of Dentistry, Institute of Oral Bioscience and BK 21 Plus Program, Chonbuk National University, Jeonju, Korea
| | - K Y Song
- Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Korea
| | - J G Jeon
- Department of Preventive Dentistry, School of Dentistry, Institute of Oral Bioscience and BK 21 Plus Program, Chonbuk National University, Jeonju, Korea.,Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Korea
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Pandit S, Cai JN, Jung JE, Lee YS, Jeon JG. Effect of brief cetylpyridinium chloride treatments during early and mature cariogenic biofilm formation. Oral Dis 2015; 21:565-71. [DOI: 10.1111/odi.12312] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Revised: 11/11/2014] [Accepted: 01/07/2015] [Indexed: 11/30/2022]
Affiliation(s)
- S Pandit
- Department of Preventive Dentistry; School of Dentistry; Institute of Oral Bioscience and BK 21 Plus Program; Chonbuk National University; Jeonju Korea
| | - J-N Cai
- Department of Preventive Dentistry; School of Dentistry; Institute of Oral Bioscience and BK 21 Plus Program; Chonbuk National University; Jeonju Korea
| | - J-E Jung
- Department of Preventive Dentistry; School of Dentistry; Institute of Oral Bioscience and BK 21 Plus Program; Chonbuk National University; Jeonju Korea
| | - Y-S Lee
- Department of Dental Hygiene; Sun Moon University; Asan Korea
| | - J-G Jeon
- Department of Preventive Dentistry; School of Dentistry; Institute of Oral Bioscience and BK 21 Plus Program; Chonbuk National University; Jeonju Korea
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Monalisa, Pandit S, Bhatnagar R. Atlanto-occipital fusion: A case report. Med J DY Patil Univ 2015. [DOI: 10.4103/0975-2870.164963] [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] Open
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Pramod R, Pandit S, Desai D, Suresh K, Ingaleshwar P, Shetty S, Ahamad S. Immunohistochemical assessment of proliferating cell nuclear antigen protein expression in plaque, reticular and erosive types of oral lichen planus. Ann Med Health Sci Res 2014; 4:598-602. [PMID: 25221712 PMCID: PMC4160688 DOI: 10.4103/2141-9248.139337] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND Proliferating cell nuclear antigen (PCNA) is a nuclear protein synthesized in the late G1 and S-phase of the cell cycle. Immunodetection of this protein represents a useful marker of the proliferation status of lesions. AIMS The aim of this study is to evaluate the immunohistochemical expression of PCNA in oral lichen planus (OLP) and to assess the PCNA expression in a different layer of epithelium in different types of OLP. SUBJECTS AND METHODS A total of 96 cases of histologically proven OLP, 32 cases each of erosive, reticular and plaque type were selected. Two sections were taken from each one for H and E. Other sections were stained according to super sensitive polymer horseradish peroxidase method for identifying PCNA expression. RESULTS Of the three types of OLP, erosive type showed higher expression of PCNA (average 66.8%, minimum of 55% and maximum of 80.3%) followed by reticular (average 37.7%, minimum of 26% and maximum of 47%) and plaque type (average 17%, minimum of 5% and maximum of 25%) indicating increased proliferative activity. The erosive type also showed higher expression of PCNA in all the layers of epithelium followed by reticular and plaque type. CONCLUSION PCNA is a good marker to indicate proliferation status of disease. Out of three types, erosive type possess more proliferative ratio, chances of malignant changes is more in this type.
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Affiliation(s)
- Rc Pramod
- Department of Oral Pathology and Microbiology, School of Dental Sciences, Krishna Institute of Medical Sciences, Deemed University, Karad, Satara, Maharashtra, India
| | - S Pandit
- Department of Oral Pathology and Microbiology, A J Institute of Dental Sciences, Mangalore, Karnataka, India
| | - D Desai
- Department of Oral Pathology and Microbiology, A J Institute of Dental Sciences, Mangalore, Karnataka, India
| | - Kv Suresh
- Department of Oral Medicine and Radiology, School of Dental Sciences, Krishna Institute of Medical Sciences, Deemed University, Karad, Satara, Maharashtra, India
| | - Ps Ingaleshwar
- Department of Oral Pathology and Microbiology, A J Institute of Dental Sciences, Mangalore, Karnataka, India
| | - Sj Shetty
- Department of Oral Pathology and Microbiology, A J Institute of Dental Sciences, Mangalore, Karnataka, India
| | - S Ahamad
- Department of Oral Pathology and Microbiology, KMCT Dental College, Calicut, Kerala, India
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Narayanasamy G, Pyakuryal A, Pandit S, Sio T, Vincent J, Kudrimoti M, Li Y. Radiobiological Evaluation of IMRT Treatment of Head and Neck Patients: Multi-institutional Study. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Parikh PM, Prabhash K, Govind KB, Digumarti R, Pandit S, Banerjee I, Biyani R, Deshmukh A, Doval D, Bhattacharyya GS, Gupta S. Standard operating procedure for audio visual recording of informed consent: an initiative to facilitate regulatory compliance. Indian J Cancer 2014; 51:113-6. [PMID: 25104190 DOI: 10.4103/0019-509x.138158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
The office of the Drugs Controller General (India) vide order dated 19 th November 2013 has made audio visual (AV) recording of the informed consent mandatory for the conduct of all clinical trials in India. We therefore developed a standard operating procedure (SOP) to ensure that this is performed in compliance with the regulatory requirements, internationally accepted ethical standards and that the recording is stored as well as archived in an appropriate manner. The SOP was developed keeping in mind all relevant orders, regulations, laws and guidelines and have been made available online. Since, we are faced with unique legal and regulatory requirements that are unprecedented globally, this SOP will allow the AV recording of the informed consent to be performed, archived and retrieved to demonstrate ethical, legal and regulatory compliance. We also compared this to the draft guidelines for AV recording dated 9 th January 2014 developed by Central Drugs Standard Control Organization. Our future efforts will include regular testing, feedback and update of the SOP.
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Affiliation(s)
- P M Parikh
- SAARC Federation of Oncology, Mumbai, India
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Pandit S, Song JG, Kim YJ, Jeong JA, Jo JY, Lee GS, Kim HW, Jeon BH, Lee JU, Park JB. Attenuated benzodiazepine-sensitive tonic GABAA currents of supraoptic magnocellular neuroendocrine cells in 24-h water-deprived rats. J Neuroendocrinol 2014; 26:26-34. [PMID: 24313753 DOI: 10.1111/jne.12123] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Revised: 11/05/2013] [Accepted: 12/01/2013] [Indexed: 11/26/2022]
Abstract
In supraoptic nucleus (SON) magnocellular neurosecretory cells (MNCs), γ-GABA, via activation of GABAA receptors (GABAA Rs), mediates persistent tonic inhibitory currents (Itonic ), as well as conventional inhibitory postsynaptic currents (IPSCs, Iphasic ). In the present study, we examined the functional significance of Itonic in SON MNCs challenged by 24-h water deprivation (24WD). Although the main characteristics of spontaneous IPSCs were similar in 24WD compared to euhydrated (EU) rats, Itonic , measured by bicuculline (BIC)-induced Iholding shifts, was significantly smaller in 24WD compared to EU rats (P < 0.05). Propofol and diazepam prolonged IPSC decay time to a similar extent in both groups but induced less Itonic in 24WD compared to EU rats, suggesting a selective decrease in GABAA receptors mediating Itonic over Iphasic in 24WD rats. THIP (4,5,6,7-tetrahydroisoxazolo[5,4-c]pyridin-3-ol), a preferential δ subunit agonist, and L-655,708, a GABAA receptor α5 subunit selective imidazobenzodiazepine, caused a significantly smaller inward and outward shift in Iholding , respectively, in 24WD compared to EU rats (P < 0.05 in both cases), suggesting an overall decrease in the α5 subunit-containing GABAA Rs and the δ subunit-containing receptors mediating Itonic in 24WD animals. Consistent with a decrease in 24WD Itonic , bath application of GABA induced significantly less inhibition of the neuronal firing activity in 24WD compared to EU SON MNCs (P < 0.05). Taken together, the results of the present study indicate a selective decrease in GABAA Rs functions mediating Itonic as opposed to those mediating Iphasic in SON MNCs, demonstrating the functional significance of Itonic with respect to increasing neuronal excitability and hormone secretion in 24WD rats.
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Affiliation(s)
- S Pandit
- Department of Physiology, School of Medicine, Brain Research Institute, Chungnam National University, Jung-gu, Daejeon, Korea
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Ramalingam S, Crawford J, Chang A, Manegold C, Perez-Soler R, Douillard JY, Thatcher N, Barlesi F, Owonikoko T, Wang Y, Pultar P, Zhu J, Malik R, Giaccone G, Della-Fiorentina S, Begbie S, Jennens R, Dass J, Pittman K, Ivanova N, Koynova T, Petrov P, Tomova A, Tzekova V, Couture F, Hirsh V, Burkes R, Sangha R, Ambrus M, Janaskova T, Musil J, Novotny J, Zatloukal P, Jakesova J, Klenha K, Roubec J, Vanasek J, Fayette J, Barlesi F, Bennouna-Louridi J, Chouaid C, Mazières J, Vallerand H, Robinet G, Souquet PJ, Spaeth D, Schott R, Lena H, Martinet Y, El Kouri C, Baize N, Scherpereel A, Molinier O, Fuchs F, Josten K, Manegold C, Marschner N, Schneller F, Overbeck T, Thomas M, von Pawel J, Reck M, Schuette W, Hagen V, Schneider CP, Georgoulias V, Varthalitis I, Zarogoulidis K, Syrigos K, Papandreou C, Bocskei C, Csanky E, Juhasz E, Losonczy G, Mark Z, Molnar I, Papai-Szekely Z, Tehenes S, Vinkler I, Almel S, Bakshi A, Bondarde S, Maru A, Pathak A, Pedapenki R, Prasad K, Prasad S, Kilara N, Gorijavolu D, Deshmukh C, John S, Sharma L, Amoroso D, Bajetta E, Bidoli P, Bonetti A, De Marinis F, Maio M, Passalacqua R, Cascinu S, Bearz A, Bitina M, Brize A, Purkalne G, Skrodele M, Baba A, Ratnavelu K, Saw M, Samson-Fernando M, Ladrera G, Jassem J, Koralewski P, Serwatowski P, Krzakowski M, Cebotaru C, Filip D, Ganea-Motan D, Ianuli C, Manolescu I, Udrea A, Burdaeva O, Byakhov M, Filippov A, Lazarev S, Mosin I, Orlov S, Udovitsa D, Khorinko A, Protsenko S, Chang A, Lim H, Tan Y, Tan E, Bastus Piulats R, Garcia-Foncillas J, Valdivia J, de Castro J, Domine Gomez M, Kim S, Lee JS, Kim H, Lee J, Shin S, Kim DW, Kim YC, Park K, Chang CS, Chang GC, Goan YG, Su WC, Tsai CM, Kuo HP, Benekli M, Demir G, Gokmen E, Sevinc A, Crawford J, Giaccone G, Haigentz M, Owonikoko T, Agarwal M, Pandit S, Araujo R, Vrindavanam N, Bonomi P, Berg A, Wade J, Bloom R, Amin B, Camidge R, Hill D, Rarick M, Flynn P, Klein L, Lo Russo K, Neubauer M, Richards P, Ruxer R, Savin M, Weckstein D, Rosenberg R, Whittaker T, Richards D, Berry W, Ottensmeier C, Dangoor A, Steele N, Summers Y, Rankin E, Rowley K, Giridharan S, Kristeleit H, Humber C, Taylor P. Talactoferrin alfa versus placebo in patients with refractory advanced non-small-cell lung cancer (FORTIS-M trial). Ann Oncol 2013; 24:2875-80. [DOI: 10.1093/annonc/mdt371] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Pandit S, Kim HJ, Song KY, Jeon JG. Relationship between fluoride concentration and activity against virulence factors and viability of a cariogenic biofilm: in vitro study. Caries Res 2013; 47:539-47. [PMID: 23774608 DOI: 10.1159/000348519] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2012] [Accepted: 01/30/2013] [Indexed: 11/19/2022] Open
Abstract
Despite widespread use of various concentrations of fluoride for the prevention of dental caries, the relationship between fluoride concentration and activity against cariogenic biofilms has not been much studied. Herein we investigated the relationship between fluoride concentration and activity against virulence factors and viability of Streptococcus mutans biofilms. S. mutans biofilms were formed on saliva-coated hydroxyapatite discs. The 70-hour-old biofilms were exposed to 0, 1, 3, 10, 30, 100, 300, 1,000 or 2,000 ppm F(-). The changes of virulence factors and viability of the biofilms were analyzed using biochemical methods and laser scanning confocal fluorescence microscopy. At 1-2,000 ppm F(-), the activity of fluoride against acid production, acid tolerance, and extracellular polysaccharide formation of S. mutans biofilms accurately followed a sigmoidal pattern of concentration dependence (R(2) = 0.94-0.99), with EC50 values ranging from 3.07 to 24.7 ppm F(-). Generally, the activity of fluoride against the virulence factors was concentration-dependently augmented in 10-100 ppm F(-) and did not increase further at concentrations higher than 100 ppm F(-). However, fluoride did not alter glucosyltransferase activity and viability of S. mutans biofilm cells in all concentrations tested. These results can provide a basis for the selection of appropriate fluoride concentrations that reduce the physiological ability of cariogenic biofilms.
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Affiliation(s)
- S Pandit
- Department of Preventive Dentistry, School of Dentistry and Institute of Oral Bioscience, Chonbuk National University, Jeonju, Republic of Korea
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Martins R, Filgueras-Rama D, Kaur K, Avula U, Ennis S, Mironov S, Kalifa J, Brenfeld O, Rajamani S, Belardinelli L, Jalife J, Pandit S. Effects of Ranolazine on Paroxysmal and Persistent Atrial Fibrillation in Isolated Sheep Hearts. Heart Rhythm 2012. [DOI: 10.1016/j.hrthm.2012.09.106] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Pandit S, Choudhury S, Das SK, Nandi S. Leucocytosis in a case of Lung Cancer: Infection or Paraneoplastic Syndrome? - Dilemma in Diagnosis and Treatment. Med J Malaysia 2012; 67:542-544. [PMID: 23770881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A 65 year old male smoker was diagnosed with squamous cell carcinoma of upper lobe of the right lung complicated with Horner's syndrome and gradually increasing leucocytosis. Alhough the inflammatory biomarker level in serum was low, there was no definite way to determine the cause of the leucocytosis (whether infection or hematologic paraneoplastic syndrome). After empirical antibiotic therapy, his fever subsided but the leucocytosis persisted. It was difficult for us to take a decision regarding the priority of the treatment of infection or the lung cancer. Only after the first cycle chemotherapy, did the leucocytosis rapidly drop down. Normal serum procalcitonin level and quick response to chemotherapy indicated that leucocytosis was a manifestation of paraneoplastic syndrome. Treating the underlying cancer is the first step.
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Affiliation(s)
- S Pandit
- Medical College, 88, College Street, Kolkata, West Bengal 713 073 India.
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Zarzoso M, Calvo C, Kean A, Pandit S, Pauza D, Jalife J, Noujaim S. Sinoatrial Node Activity is Modulated by Nerves Emerging From the Intrinsic Cardiac Ganglia of the Pulmonary Veins in the Mouse Heart. Heart Rhythm 2011. [DOI: 10.1016/j.hrthm.2011.09.036] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Mallick S, Bisaws A, Joshi N, Pandit S, Mohanti B, Julka R, Rath G. 8531 POSTER Esthesioneuroblastoma – Clinical Experience From a Regional Cancer Centre in North India. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)72173-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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