5 results on '"Sikaria S"'
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2. Electrochemical Detection of Ascorbic Acid by Fe₂O₃ Nanoparticles Modified Glassy Carbon Electrode.
- Author
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Sikaria S, Celshia S, Selvamani M, Suresh V, and Hussein MA
- Abstract
Background The article delineates a strategy for detecting ascorbic acid (AA) through the use of iron oxide (Fe₂O₃) nanoparticles on an electrode. The Fe₂O₃ nanoparticles demonstrated effective electrocatalysis in the oxidation of AA, resulting in increased peak currents. The sensor showcased a wide linear detection range, a low detection limit, and high selectivity towards interferents, making it suitable for accurate AA measurement in food analysis and medical diagnostics applications. This emphasizes the potential of Fe₂O₃ nanoparticle-based sensors for precise AA detection. Aim The primary aim of this research is to develop an electrochemical sensing technique for the identification of ascorbic acid, with the use of Fe₂O₃ nanoparticles as the sensing matrix. Materials and methods The synthesis process involved the utilization of FeCl
3 .6H2 O, ammonia solution, ethanol, and double-distilled water. FeCl3 .6H2 O was dissolved in ammonia water to produce a brown precipitate for the synthesis of Fe₂O₃ nanoparticles. Subsequently, the brown precipitate underwent hydrothermal treatment at 180 °C, resulting in the formation of a red product. Following centrifugation, washing, and drying steps, Fe₂O₃ nanoparticles were successfully synthesized. These nanoparticles were then utilized to modify the glassy carbon electrode (GCE). Prior to the modification, the GCE underwent polishing and cleaning procedures, after which it was coated with a suspension containing 5 mg of Fe₂O₃ nanoparticles in 10 mL of ethanol. The coated electrode was dried and deemed ready for application in electrochemical sensing. Results The hydrothermal method was employed in this research to synthesize Fe₂O₃ nanoparticles, which were subsequently subjected to a series of experiments to evaluate their electrochemical sensing capabilities. The resulting Fe₂O₃ nanoparticles were determined to possess a high level of purity and a crystalline structure through various analyses, including field emission-scanning electron microscopy (FE-SEM), cyclic voltammetric testing, X-ray diffraction (XRD), energy-dispersive X-ray (EDX) spectroscopy analysis, differential pulse voltammetry (DPV), and the current response of the Fe₂O₃-modified electrode towards ascorbic acid. The morphology of the Fe₂O₃ nanoparticles was observed to be uniform. The synthesized particles successfully fulfilled the study's objective by exhibiting remarkably sensitive and selective sensitivity towards ascorbic acid. Conclusion Our study underscores the potential of utilizing Fe₂O₃ nanoparticle-based electrochemical sensing to detect ascorbic acid, as evidenced by the notably high sensitivity of ascorbic acid towards Fe₂O₃ nanoparticles. The distinctive properties of Fe₂O₃ nanoparticles, which include their large surface area, efficient electron transport, and straightforward manufacturing process, significantly enhance the sensor's performance. Further research is crucial to exploring the wide-ranging applications of the sensor in fields such as food safety, environmental monitoring, and biological diagnostics and to overcome any existing limitations., Competing Interests: Human subjects: All authors have confirmed that this study did not involve human participants or tissue. Animal subjects: All authors have confirmed that this study did not involve animal subjects or tissue. Conflicts of interest: In compliance with the ICMJE uniform disclosure form, all authors declare the following: Payment/services info: All authors have declared that no financial support was received from any organization for the submitted work. Financial relationships: All authors have declared that they have no financial relationships at present or within the previous three years with any organizations that might have an interest in the submitted work. Other relationships: All authors have declared that there are no other relationships or activities that could appear to have influenced the submitted work., (Copyright © 2024, Sikaria et al.)- Published
- 2024
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3. Gonial Angle in Forensic Anthropology to Determine Age and Gender: A Population-Specific Analysis.
- Author
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Sikaria S, Arthanari A, Ramalingam K, Ravindran V, and Prathap L
- Abstract
Background The study highlights the gonial angle as a key craniofacial landmark for age and gender determination in forensic cases. It emphasizes population-specific analysis, enhancing precision by recognizing variations between populations. By clarifying the gonial angle's forensic use, the study offers clear guidelines, improving forensic practices. Moreover, the gonial angle and age and gender correlations are thoroughly examined, offering important information on their forensic relevance. The results highlight how crucial population-specific research is to improving the precision and dependability of forensic age and gender estimation techniques, which advances forensic anthropology and supports forensic investigations around the globe. Aim and objective The purpose of this study is to assess the accuracy of age and gender estimates using gonial angles. The objectives of this research are to evaluate the precision of age and gender estimates utilizing the gonial angle. Materials and methods This present study comprises two groups based on age groups: Group I belongs to 51 to 60 years of age, and Group II belongs to 61 to 70 years of age. Making use of G-Power software (version 3.1.9.4, Düsseldorf, Germany), the sample size was determined. The calculation ensured 95% statistical power at a significance level (alpha error probability) of 0.05. To achieve sufficient statistical power, a total of 1000 samples were included, with a projected required sample size of 92. A total of 1000 samples, consisting of 500 male and 500 female panoramic radiographs, were meticulously selected for the study. The samples picked were within the age range of 51 to 70 years. Orthopantomograms were determined using Planmeca software (Planmeca Romexis®, Version 6.0, USA Inc.). Descriptive statistics, including prediction classification analysis of age and gender, were conducted using SPSS Statistics version 16.0 (SPSS Inc., Released 2007, SPSS for Windows, Version 16.0, Chicago, SPSS Inc.). Results According to this study, the mean gonial angle of males aged 51 to 60 years is larger (124.7370 degrees) than that of females (119.6371 degrees). The female group's mean estimates are more accurate, as seen by the smaller standard error (0.20844) compared to the male group's (0.60998). A statistically significant difference in mean gonial angles between the genders is evident, with males having a larger gonial angle (p-value <0.001). In the age range of 61 to 70 years, the mean gonial angle of females is higher (128.4322 degrees) than that of males (124.0529 degrees). In this instance, the male group's standard error is smaller (0.14968) than the female group's (0.30028), indicating more accurate mean estimates. Once more, a statistically significant difference is indicated by a p-value of less than 0.001, with females having a larger gonial angle than males. Conclusion Our study revealed that the gonial angle of the mandible can be considered a reliable parameter for gender identification. The study's limitation is its inability to reliably identify gender in the subadult population and in cases of edentulousness. An orthopantomogram is a trustworthy and accurate method for taking the different measurements needed to identify the gender of a particular mandible., Competing Interests: Human subjects: Consent was obtained or waived by all participants in this study. Institutional Human Ethics Committee of Saveetha Dental College issued approval IHEC/SDC/UG-2288/24/FORENSIC/078. Animal subjects: All authors have confirmed that this study did not involve animal subjects or tissue. Conflicts of interest: In compliance with the ICMJE uniform disclosure form, all authors declare the following: Payment/services info: All authors have declared that no financial support was received from any organization for the submitted work. Financial relationships: All authors have declared that they have no financial relationships at present or within the previous three years with any organizations that might have an interest in the submitted work. Other relationships: All authors have declared that there are no other relationships or activities that could appear to have influenced the submitted work., (Copyright © 2024, Sikaria et al.)
- Published
- 2024
- Full Text
- View/download PDF
4. Monoclonal antibodies and immune therapies for adult precursor B-acute lymphoblastic leukemia.
- Author
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Sikaria S, Aldoss I, and Akhtari M
- Subjects
- Adult, Antibodies, Bispecific therapeutic use, Antigens, Differentiation immunology, Clinical Trials as Topic, Humans, Precursor Cell Lymphoblastic Leukemia-Lymphoma immunology, Precursor Cell Lymphoblastic Leukemia-Lymphoma pathology, Protein Engineering, Receptors, Antigen, T-Cell genetics, Rituximab therapeutic use, T-Lymphocytes transplantation, Antibodies, Monoclonal therapeutic use, Cancer Vaccines immunology, Immunotherapy methods, Immunotoxins therapeutic use, Precursor Cell Lymphoblastic Leukemia-Lymphoma therapy, Precursor Cells, B-Lymphoid pathology, T-Lymphocytes immunology
- Abstract
Adult B-acute lymphoblastic leukemia (B-ALL) does not share the favorable prognosis seen in pediatric patients with the same disease. Less than 50% of patients experience long-term survival and for those adults over age 60, long-term survival is only 10%. At time of relapse, 5-year prognosis is a dismal 7%. Novel and less toxic agents are urgently needed. The last few years have seen a surge in immune therapies for B-ALL. These agents may target CD19, CD20, CD22, and less frequently CD52. Expression of these surface markers and the drugs which target them are discussed. Some immune therapies are simple monoclonal antibodies against B lymphocyte markers such as rituximab, ofatumumab, and epratuzumab. Others are in a class of antibody-drug conjugates which link a highly toxic chemotherapy to a monoclonal antibody for targeted delivery, such as inotuzumab and denintuzumab. Finally, novel immune therapies recruit (in the case of bispecific T cell engager [BiTE]) or modify (in the case of chimeric antigen receptor [CAR] T cells) one's own T cells to fight leukemic cells. This article reviews the rationale, clinical data, and toxicity profiles of immune therapies approved or in late stages of development for B-ALL., (Copyright © 2016 European Federation of Immunological Societies. Published by Elsevier B.V. All rights reserved.)
- Published
- 2016
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5. Partial response of a rare malignant metastatic diffuse tenosynovial giant cell tumor with benign histologic features, treated with SCH 717-454, an insulin growth factor receptor inhibitor, in combination with everolimus, an MTOR inhibitor.
- Author
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Sikaria S, Heim-Hall J, Diaz EH, Williams R, Sankhala K, Laabs B, and Mita M
- Subjects
- Antibodies, Monoclonal, Humanized, Everolimus, Giant Cell Tumors diagnosis, Giant Cell Tumors pathology, Humans, Joint Capsule pathology, Male, Middle Aged, Neoplasm Metastasis, Receptors, Somatomedin antagonists & inhibitors, Receptors, Somatomedin immunology, Sirolimus administration & dosage, Soft Tissue Neoplasms diagnosis, Soft Tissue Neoplasms pathology, TOR Serine-Threonine Kinases antagonists & inhibitors, Tendons pathology, Treatment Outcome, Antibodies, Monoclonal administration & dosage, Antineoplastic Combined Chemotherapy Protocols therapeutic use, Giant Cell Tumors drug therapy, Shoulder Joint pathology, Sirolimus analogs & derivatives, Soft Tissue Neoplasms drug therapy
- Published
- 2014
- Full Text
- View/download PDF
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