57 results on '"S Makwana"'
Search Results
2. The Spectrum of Cutaneous Adverse Drug Reactions Following the Application of Topical Medications: An Observational Study at a Tertiary Care Center
- Author
-
Vaishali S, Makwana, Sejal G, Bhadja, Bhavesh M, Songara, Zalak R, Patel, and Aniruddha P, Vyas
- Subjects
General Engineering - Abstract
Introduction Topical medications are one of the most commonly used therapeutic agents in treating a wide spectrum of dermatological diseases. The misuse of topical medicines for inappropriate indications and an extended period may result in cutaneous adverse drug reactions (ADR). Aims We conducted this study to observe demographic parameters, commonly misused topical medicines, various clinical patterns of cutaneous ADR, and source of drug prescription among study participants. Materials and methods This cross-sectional observational study was conducted from October 2021 to May 2022 at the dermatology outpatient department (OPD) of a tertiary care center. All patients who presented with worsening pre-existing skin diseases or the development of skin disease after the topical application of some cream or ointment were included in the study with written informed consent. A detailed history was taken, and a clinical examination was done. Results We detected 200 cases (1.62%) of cutaneous ADR out of 12,346 OPD patients in the eight-month study period. The most common age group was 21-30 years (30%). Most of the patients had used topical medicines for fungal infections (76%). The most commonly used topical medication was a fixed drug combination (FDC) of steroid, antifungal, and antibacterial agents (40%). Tinea incognito (36%) was the most common cutaneous ADR noted. Conclusion This study shows that misuse of topical medications is rampant in our community because of their free and easy availability. There is an urgent requirement for strict regulations over the manufacturing, sales, and marketing of over-the-counter (OTC) topical medications to reduce the incidence of cutaneous ADR.
- Published
- 2022
- Full Text
- View/download PDF
3. An efficient construction of quinoline-based hybrid scaffolds through palladium-catalyzed C S coupling
- Author
-
Bhavik S. Makwana, Mayur I. Morja, and Kishor H. Chikhalia
- Subjects
Organic Chemistry ,Drug Discovery ,Biochemistry - Published
- 2023
- Full Text
- View/download PDF
4. Parametric optimization to improve the machining process by using Taguchi method: A review
- Author
-
Priyansh L. Parihar, N.S. Patel, and Jay S. Makwana
- Subjects
010302 applied physics ,Machining process ,Computer science ,Parametric optimization ,02 engineering and technology ,Surface finish ,021001 nanoscience & nanotechnology ,01 natural sciences ,Manufacturing engineering ,Taguchi methods ,Machining ,0103 physical sciences ,Surface roughness ,Response surface methodology ,0210 nano-technology ,Literature survey - Abstract
In the new era of manufacturing science, day by day, evaluation of machining processes has occurred. To achieve a high level of surface finish is a very crucial part of all machining processes. This paper illustrates a literature review on Parametric Optimization of numerous Machining Processes such as drilling, reaming, milling, turning, etc. by using Taguchi method, Analysis of Variance (ANOVA), Response Surface Methodology (RSM) and others. An extensive literature survey on databases of Elsevier, Taylor & Francis, Springer, IOPscience, Emerald, etc., was used to investigate the importance of parametric optimization in machining processes. We found various researchers' work on different parameters such as cutting speed, feed, and depth of cut with different types of materials to improve machining processes, significantly to improve surface finish or reduce surface roughness. In view of the survey, it is to be inferred that to improve the machining processes or aspects of the surface finish, and it is essential to develop a cost-effective method. This paper represents a review of various approaches to improve the machining processes, which will help the researchers/industrialists to find out the new way of machining.
- Published
- 2021
- Full Text
- View/download PDF
5. P-229 Has rampant use of ICSI wiped out Conventional IVF for non male factor infertility, or can Conventional IVF hold its ground
- Author
-
P Makwana, S Makwana, and R Makwana
- Subjects
Reproductive Medicine ,Rehabilitation ,Obstetrics and Gynecology - Abstract
Study question Can ICSI completely replace and produce higher implantation rates as compared to conventional IVF for non-male factor infertility patients? Summary answer ICSI has no advantage over Conventional IVF in improving fertilization and implantation rates in non-male factor infertility. Rampant use of ICSI is not recommended. What is known already ICSI is the technique of choice for male factor infertility, no argument there. But in the recent times, the unbridled use of ICSI for non male factor patients worldwide has pushed Conventional IVF out of the picture. The evidence states otherwise, ICSI holds no significant advantage over Conventional IVF in couples with normal semen parameters when it comes to fertilization and implantation rates. The mechanical damage as a result of ICSI to oocytes cannot be ignored. Conventional IVF holds a certain advantage in allowing the oocyte to choose the sperm, mimicking in vivo selection. Study design, size, duration Prospective randomized study conducted in 140 patients, undergoing IVF & ICSI with non-male factor infertility. The oocytes recovered for all the patients included in the study underwent split insemination, and were divided into 2 groups: Group 1: Insemination by Conventional IVF, and Group 2: Insemination by ICSI. Fertilization and Implantation rates were recorded. Participants/materials, setting, methods 140 patients with non-male factor cause of infertility were undergoing IVF/ICSI cycle were included in this study. Post ovum pick-up, the oocytes recovered for each patient were split into 2 separate groups and inseminated using Conventional IVF (413) and ICSI (679). The fertilization check was done at 17±1 hours. The implantation rates were noted 14 days after embryo transfer using the beta HCG values. The results were noted and compared. Main results and the role of chance In the Conventional IVF(C-IVF) group, fertilization rates were 69.23% compared to 71.44% in the ICSI group. The implantation rates were 26.50% in C-IVF group vs 22.10% in ICSI group. Limitations, reasons for caution A major limitation is the time constraint which did not allow us to track the live birth rates along with the small sample size, the lack of data showing clinical outcomes of this study can be improved upon in the future and with similar studies. Wider implications of the findings While ICSI holds the gold standard as the technique of choice for male factor infertility, it is not superior to C-IVF in patients with normal semen parameters. ICSI for all cannot be justified at this moment. Larger RCTs are required to establish superiority of one technique over the other Trial registration number not applicable
- Published
- 2022
- Full Text
- View/download PDF
6. Enhanced transformer differential protection – design, test and field experience
- Author
-
S. Makwana, G. Lloyd, P. Newman, B. Smith, and B. Liu
- Published
- 2022
- Full Text
- View/download PDF
7. P–069 microfluidic sperm sorting vs density gradient to yield sperm with reduced DFI for patients undergoing IVF-ICSI
- Author
-
D P Makwana, S Makwana, and T Sen
- Subjects
Andrology ,endocrine system ,Yield (engineering) ,Reproductive Medicine ,Density gradient ,Sperm sorting ,urogenital system ,Chemistry ,Rehabilitation ,Obstetrics and Gynecology ,Ivf icsi ,Sperm - Abstract
Study question To compare the effect of sperm preparation methods on the DFI of semen sample for patients undergoing ICSI. Summary answer On comparing the results, microfluidic sperm sorting yielded sperms with significantly less DFI as compared to density gradient method of sperm preparation. What is known already The DNA integrity of the sperm plays an important role to ensure formation of good quality embryos with increased potential of fertilization, growth and ultimately implantation.. Centrifugation has shown to add stress to the sperm and leading to DNA damage, therefore there is a need to develop techniques of sperm preparation which help in retrieving as many sperms with intact DNA from the unprocessed sample as possible. Microfludic is fluid dynamic based technique of sperm preparation. in this study, we evaluated if microfluidic sperm sorter can recover motile sperm with better DNA integrity compared to density gradient preparation method. Study design, size, duration Prospective randomized study conducted in 80 patients undergoing IVF-ICSI with normal semen parameters (based WHO criteria 2010). DFI was done using Sperm Chromatin Dispersion (SCD) test in split semen samples prepared by microfluidic sperm sorter and density gradient method. Sperm morphology and motility were also recorded and evaluated based on the WHO 2010 criteria. Participants/materials, setting, methods Semen parameters of the sample were assessed by microscopic examination. DFI of each unprocessed sample was carried out using SCD test, following that the sample was split and sperm preparation was done using microfluidic sperm sorter and density gradient. the recovered sperm were tested for DFI and the results were compared. Main results and the role of chance Mean DFI in unprocessed semen samples was 23%. the analysis of split semen samples post preparation showed that the DFI was significantly reduced with the use of microfluidic sperm sorter (mean DFI 0.6%) as compared to density gradient (mean DFI 9%). Limitations, reasons for caution A major limitation of the microfluidic sperm sorter is the use sperm concentration and motility of the semen sample. In oligospermic and asthenospermic samples, density gradient is the preferred method of preparation. Lack of data showing improvement in clinical outcomes with reduced DFI is also a major limitation. Wider implications of the findings: Microfluidics has shown to significantly reduce the DFI of the semen sample, it requires no extra equipment and cost and is relatively easy to pick up. Density gradient method of sperm preparation continues to be the preferred method due to its versatility and recovery of good quality sperm. Trial registration number Not applicable
- Published
- 2021
- Full Text
- View/download PDF
8. Optimizing high impedance busbar protection scheme design using a numerical relay
- Author
-
B. Smith, G. Lloyd, A. Pal, S. Makwana, and Chee-Pinp Teoh
- Subjects
Scheme (programming language) ,High impedance ,Computer science ,Busbar ,Relay ,law ,Electronic engineering ,computer ,computer.programming_language ,law.invention - Published
- 2020
- Full Text
- View/download PDF
9. Mitigation of Fluoride from Brackish Water via Electrodialysis: An Environmentally Friendly Process
- Author
-
Saroj Sharma, B. S. Makwana, Vikrant Yadav, Pravin D. Maru, Vaibhav Kulshrestha, and Prem P. Sharma
- Subjects
Brackish water ,Waste management ,02 engineering and technology ,General Chemistry ,Electrodialysis ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,Environmentally friendly ,0104 chemical sciences ,chemistry.chemical_compound ,chemistry ,Scientific method ,Ionic conductivity ,Ion-exchange membranes ,0210 nano-technology ,Fluoride - Published
- 2018
- Full Text
- View/download PDF
10. A sustainable and efficient process for the preparation of polyethylene–polystyrene interpolymer based anion exchange membranes by in situ chloromethylation for electrodialytic applications
- Author
-
Souradeep Chakraborty, Uma Chatterjee, B. S. Makwana, Vaibhavee Bhadja, Sandip Pal, and Rakhi Mondal
- Subjects
Thermogravimetric analysis ,Ion exchange ,Renewable Energy, Sustainability and the Environment ,Inorganic chemistry ,Energy Engineering and Power Technology ,02 engineering and technology ,Electrodialysis ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,chemistry.chemical_compound ,Fuel Technology ,Membrane ,chemistry ,Reagent ,Ultrapure water ,Polystyrene ,Electrodeionization ,0210 nano-technology - Abstract
The present article describes the preparation of efficient and stable anion exchange membranes (AEMs) from the inter-polymer of polyethylene and polystyrene-co-polydivinylbenzene. The chloromethylated moiety in the interpolymer film was incorporated by an in situ Friedel–Crafts reaction followed by quaternization with trimethylamine. This process dispensed the direct use of hazardous and carcinogenic chloromethyl ether which is required for functionalization of interpolymer films. The effects of mole ratio of reactants during the electrophilic substitution reaction were investigated and the degree of chloromethylation was optimized. The anion exchange membrane was characterized by ATR-IR spectroscopy, thermogravimetric analysis, stress–strain properties, ion-exchange capacity and water uptake. The electrochemical properties such as the membrane resistance, ionic conductivity and transport number were also determined. The oxidative stability of the membrane was verified by treatment with 3% Fenton's reagent at room temperature. The performance of the membrane in terms of water desalination by electrodialysis and ultrapure water production by the electrodeionization process was evaluated and compared with those of polyethylene–poly-4-methylstyrene interpolymer based membranes and two other commercial membranes (Ionsep and Fujifilm).
- Published
- 2017
- Full Text
- View/download PDF
11. Discharge Criteria and Complications After Day Care Surgery
- Author
-
Kashmira Prem, D. S Makwana, Suresh kumar, B. H. M. Patel, and Neeren Parmar
- Subjects
medicine.medical_specialty ,Day care surgery ,business.industry ,General surgery ,medicine ,General Medicine ,business - Published
- 2016
- Full Text
- View/download PDF
12. Correction: Sustainable process for the preparation of potassium sulfate by electrodialysis and its concentration and purification by a nanofiltration process
- Author
-
Jaladhi S. Trivedi, Vaibhavee Bhadja, B. S. Makwana, Suresh K. Jewrajka, and Uma Chatterjee
- Subjects
General Chemical Engineering ,General Chemistry - Abstract
Correction for ‘Sustainable process for the preparation of potassium sulfate by electrodialysis and its concentration and purification by a nanofiltration process’ by Jaladhi S. Trivedi et al., RSC Adv., 2016, 6, 71807–71817, DOI: 10.1039/C6RA14303B.
- Published
- 2020
- Full Text
- View/download PDF
13. Tribological characterization of TiN coatings prepared by magnetron sputtering
- Author
-
Kamlesh V. Chauhan, Dharmesh B. Chauhan, Nishant S. Makwana, Divyeshkumar P. Dave, Akshay L. Sonera, and Sushant K. Rawal
- Subjects
Materials science ,chemistry.chemical_element ,Sputter deposition ,engineering.material ,Nitride ,Titanium nitride ,Brass ,chemistry.chemical_compound ,chemistry ,Coating ,Aluminium ,Sputtering ,visual_art ,engineering ,visual_art.visual_art_medium ,Composite material ,Tin - Abstract
Titanium nitride (TiN) coating deposited on aluminium and brass pin substrates using RF reactive magnetron sputtering. The structural properties and surface morphology were characterized by X-ray diffraction (XRD), atomic force microscope (AFM) and field emission scanning electron microscope (FE-SEM). There was formation of (101) Ti2N, (110) TiN2 and (102) TiN0.30 peaks at 3.5Pa, 2Pa and 1.25Pa sputtering pressure respectively. The tribological properties of coating were inspected using pin on disc tribometer equipment. It was observed that TiN coated aluminium and brass pins demonstrated improved wear resistance than uncoated aluminium and brass pins.Titanium nitride (TiN) coating deposited on aluminium and brass pin substrates using RF reactive magnetron sputtering. The structural properties and surface morphology were characterized by X-ray diffraction (XRD), atomic force microscope (AFM) and field emission scanning electron microscope (FE-SEM). There was formation of (101) Ti2N, (110) TiN2 and (102) TiN0.30 peaks at 3.5Pa, 2Pa and 1.25Pa sputtering pressure respectively. The tribological properties of coating were inspected using pin on disc tribometer equipment. It was observed that TiN coated aluminium and brass pins demonstrated improved wear resistance than uncoated aluminium and brass pins.
- Published
- 2018
- Full Text
- View/download PDF
14. Study the effect of nitrogen flow rate on tribological properties of tantalum nitride based coatings
- Author
-
Nishant S. Makwana, Dharmesh B. Chauhan, Divyeshkumar P. Dave, Akshay L. Sonera, Sushant K. Rawal, and Kamlesh V. Chauhan
- Subjects
Materials science ,technology, industry, and agriculture ,engineering.material ,Nitride ,Tribology ,Sputter deposition ,Brass ,chemistry.chemical_compound ,Coating ,Tantalum nitride ,chemistry ,visual_art ,engineering ,visual_art.visual_art_medium ,Composite material ,Tribometer ,Diffractometer - Abstract
Tantalum Nitride (TaN) based coatings are well-known for their high temperature stability and chemical inertness. We have studied the effect of nitrogen flow rate variation on the structural and tribological properties of TaN based coating deposited by RF magnetron sputtering process. The nitrogen flow rate was varied from 5 to 30 sccm. X-ray diffractometer (XRD) and Atomic Force Microscopy (AFM) were used to determine structure and surface topography of coating. Pin on disc tribometer was used to determine tribological properties of coating. TaN coated brass and mild steel substrates shows higher wear resistance compared to uncoated substrates of brass and mild steel.Tantalum Nitride (TaN) based coatings are well-known for their high temperature stability and chemical inertness. We have studied the effect of nitrogen flow rate variation on the structural and tribological properties of TaN based coating deposited by RF magnetron sputtering process. The nitrogen flow rate was varied from 5 to 30 sccm. X-ray diffractometer (XRD) and Atomic Force Microscopy (AFM) were used to determine structure and surface topography of coating. Pin on disc tribometer was used to determine tribological properties of coating. TaN coated brass and mild steel substrates shows higher wear resistance compared to uncoated substrates of brass and mild steel.
- Published
- 2018
- Full Text
- View/download PDF
15. Effect of sputtering pressure on molybdenum oxide thin films prepared by RF magnetron sputtering
- Author
-
Divyeshkumar P. Dave, Dharmesh B. Chauhan, Sushant K. Raval, Nishant S. Makwana, Kamlesh V. Chauhan, and Akshay L. Sonera
- Subjects
Contact angle ,Materials science ,Sputtering ,Surface roughness ,Wetting ,Crystallite ,Sputter deposition ,Composite material ,Thin film ,Surface energy - Abstract
The aim of this paper is to investigate the effect of sputtering pressure variation on Molybdenum oxide thin films were deposited by RF reactive magnetron sputtering. The effect of sputtering pressure on structural and wettability properties of molybdenum oxide films was studied. The decrease of sputtering pressure from 4.5Pa to 1.5Pa which led to evolution of (540), (001) and (015) textures of molybdenum oxide. The XRD results show increment of preferred orientation along with (001) plane for deposited molybdenum oxide films. The average crystallite size is within range 10.09nm-27.39nm with decrease of sputtering pressure from 4.5Pa to 1.5Pa. The static contact angle formed by water and surface energy varies as a function of sputtering pressure. The surface roughness increases from 16.886 to 30.16 nm with decrease in sputtering pressure from 4.5Pa to 1.5Pa.
- Published
- 2018
- Full Text
- View/download PDF
16. Large Scale Preparation of Polyethylene Based Ion Exchange Membranes and Their Application for Water Desalination
- Author
-
B. S. Makwana, Saroj Sharma, P.D. Maru, Uma Chatterjee, and Vaibhav Kulshrestha
- Subjects
Materials science ,Polymers and Plastics ,Ion exchange ,Organic Chemistry ,Polyethylene ,Electrodialysis ,Condensed Matter Physics ,Purified water ,Desalination ,chemistry.chemical_compound ,Membrane ,chemistry ,Chemical engineering ,Materials Chemistry ,Ionic conductivity ,Polystyrene ,Nuclear chemistry - Abstract
Summary Here in we are reporting the large scale preparation and characterization of polyethylene (PE) based interpolymer ion exchange membranes (IEMs) and their performance evaluation during water desalination by electrodialysis. The cation exchange membrane (CEM) has been prepared from cross-linked PE/polystyrene interpolymer film and the anion exchange membrane (AEM) has been prepared from cross-linked PE/polypmethylstyrene based interpolymer film by suitable functionalization reaction. Both the prepared CEM and AEM exhibited 1.5–1.30 meq g−1 ion-exchange capacity, 2.85–1.15 m Scm−1 ionic conductivity and 0.92–0.93 transport number respectively. The prepared AEM and CEM were used for brackish water desalination containing total solid content (2000–3000 mg/L) by electrodialysis in a unit of size 200 cm2 using 30 pieces of each kind of membrane under single pass mode with final flow of purified water 7.2–8.4 L/h. The power consumption (W) and current efficiency (CE %) of the desalination processes were 0.789–0.796 kWh/kg and 87–86% respectively. On the contrary the W and CE% values were 1.125–1.07 kWh/kg and 61–64% for commercial IONSEP membranes during water desalination under similar experimental condition. These values indicate the better performance of developed membranes and established the validation of the process in large scale.
- Published
- 2015
- Full Text
- View/download PDF
17. Sustainable synthesis of a high performance inter-polymer anion exchange membrane employing concentrated solar radiation in a crucial functionalization step
- Author
-
Vaibhav Kulshrestha, P.D. Maru, Vinod K. Shahi, Uma Chatterjee, Milan Dinda, Pushpito Kumar Ghosh, Soumyadeb Ghosh, B. S. Makwana, Girish R. Desale, Subarna Maiti, Vaibhavee Bhadja, and Saroj Sharma
- Subjects
Ion exchange ,Chemistry ,Inorganic chemistry ,Filtration and Separation ,Electrolyte ,Polyethylene ,Electrodialysis ,Biochemistry ,Chloride ,chemistry.chemical_compound ,Membrane ,Yield (chemistry) ,medicine ,Organic chemistry ,Surface modification ,General Materials Science ,Physical and Theoretical Chemistry ,medicine.drug - Abstract
Preparation of an anion exchange membrane (AEM) from polymethylstyrene-co-divinylbenzene/polyethylene (Pp-MSt-co-DVB/PE) inter-polymer film (IPF) was reported recently. Functionalization of the above IPF was achieved through photo-thermochemical benzylic bromination with N-bromosuccinimide. The end result was the same as that achieved through chloromethylation of conventional styrene-DVB IPF, while avoiding use of carcinogenic chloromethyl ether. The present study reports the optimum process for preparation of the Pp-MSt-co-DVB/PE IPF and a new protocol for its efficient bromination employing concentrated solar radiation. No chemical initiator was necessary in the new process. Over the 4 h period of peak solar insolation, the bromination yield of a 1.18 m×0.12 m strip of IPF (Pp-MS content, 31.88% w/w; film thickness, 80±11 µm) was 87.1±3.5%. Cross-sectional analysis showed reasonable uniformity of bromination across the film thickness. The AEM obtained upon quaternization exhibited an anion exchange capacity of 1.60±0.04 meqg−1, bulk resistivity of 4.52±0.47 Ω m, and chloride transport numbers (EMF method) of 0.941±0.003 and 0.981±0.002 employing HCl and NaCl, respectively, as electrolytes. The performance of the synthesized AEM was compared with that of IONSEP-HC-A, a commercial AEM.
- Published
- 2015
- Full Text
- View/download PDF
18. Comparative Efficacy Study of Different Types of Ion Exchange Membranes for Production of Ultrapure Water via Electrodeionization
- Author
-
Saroj Sharma, Babubhai S Makwana, Uma Chatterjee, Vaibhavee Bhadja, and Subarna Maiti
- Subjects
Chromatography ,Cell pair ,General Chemical Engineering ,Analytical chemistry ,General Chemistry ,Polyethylene ,Industrial and Manufacturing Engineering ,chemistry.chemical_compound ,Membrane ,chemistry ,Power consumption ,Ultrapure water ,Ion-exchange membranes ,Electrodeionization ,Efficacy Study - Abstract
High purity ultrapure water is required in the electronics and pharmaceutical industries. Herein, we report production of high purity ultrapure water (18.5 L/h) by electrodeionization (EDI) technique in a laboratory scale EDI unit (effective membrane area 24 cm × 6 cm) using polyethylene interpolymer based ion-exchange membranes. The ultrapure water also prepared by EDI process in the same EDI unit using two different types of commercial membranes (Ionsep and Fujifilm type II). The resistance of ultrapure water was 18.2 MΩ cm with the interpolymer based membranes at 25 V/cell pair applied potential, whereas with commercial Ionsep and Fujifilm type II membranes the final resistance of ultrapure water was 15 MΩ cm and 17.1 MΩ cm respectively at 30 V/cell pair applied potential. The power consumption (W) and current efficiency (CE) values were 0.324 KWhkg–1 and 58.86% respectively for interpolymer based ion-exchange membranes, whereas for Ionsep and Fujifilm type II membranes, W and CE values were 0.658 and ...
- Published
- 2015
- Full Text
- View/download PDF
19. Synthesis of N2, N4-bis(4-nitro-1,3-benzothiazol-2-yl)-N6-aryl-1,3,5-triazine-2,4,6-triamine as biological Agents
- Author
-
J. S. Makwana
- Subjects
1, 3, 5-triazine-2, 4, 6-triamines ,Antibacterial activity, antifungal activities - Abstract
Some novel N2,N4-bis(4-nitro-1,3-benzothiazol-2-yl)-N6-aryl-1,3,5-triazine-2,4,6-triamine have been synthesized (1-14). The products tested for their antibacterial activity against gram (+)ve and gram (-)ve bacteria. Introduction of –OH, -NO2, -Cl and –Br groups to the heterocyclic frame work enhanced antibacterial activities and antifungal activities.
- Published
- 2017
- Full Text
- View/download PDF
20. In-sight studies on concentration polarization and water splitting during electro-deionization for rapid production of ultrapure water (@18.2 MΩ cm) with improved efficiency
- Author
-
Mani Bhushan, Sonu Kumar, Murli Manohar, Vinod K. Shahi, and B. S. Makwana
- Subjects
chemistry.chemical_classification ,Materials science ,Base (chemistry) ,Filtration and Separation ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,Biochemistry ,0104 chemical sciences ,Membrane ,chemistry ,Chemical engineering ,Electrical resistivity and conductivity ,Ultrapure water ,Water splitting ,General Materials Science ,Wafer ,Surface charge ,Physical and Theoretical Chemistry ,0210 nano-technology ,Concentration polarization - Abstract
We report in-sight studies on concentration polarization and water splitting, responsible for in-situ regeneration of ion-exchange resin during electro-deionization (EDI) without any use of acid/base. Herein, we introduced rapid EDI (REDI) with high productivity of ultrapure water (resistivity: 18.2 MΩ cm). The effect of membrane surface charge concentration on EDI performance was broadly investigated for cation-exchange membranes (CEMs) with 1.2–4.7 × 10 −5 mol cm −3 surface charge concentrations. In these cases, well-commercialized interpolymer anion-exchange membrane (IP-AEM) was used. Resin wafers, in place of loose resin, avoids several difficulties during EDI such as inconsistent performance, unequal fluid flow distribution, draining of resin with flow stream, etc. Using CEM with high surface charge concentration, energy consumption was significantly reduced, while energy efficiency and productivity were improved. EDI process with highly charged CEM (SPS-62) showed 0.85 kWh m −3 energy consumption, 0.13 m h −1 productivity and 81.3% current efficiency. After several ED experiments, ion-exchange capacity (IEC) of resin was unaltered, which ensured the in-situ resin regeneration and longevity of process.
- Published
- 2019
- Full Text
- View/download PDF
21. 94 Simulation scenario beta-testing: increasing the fidelity
- Author
-
A Gopal, S Kadri, S Makwana, C Sivakumar, K Meznikova, S Taylor, and S Ahmed
- Subjects
Multimedia ,business.industry ,Debriefing ,media_common.quotation_subject ,Applied psychology ,Fidelity ,Peer group ,computer.software_genre ,Beta testing ,Scripting language ,Mann–Whitney U test ,Medicine ,TUTOR ,business ,computer ,Competence (human resources) ,computer.programming_language ,media_common - Abstract
Background Undergraduate medical students from the Hull York Medical School are taught to use simulation 1 to create and run a high fidelity simulated scenario to teach their peer group about managing simple medical emergencies at Hull Institute of Learning and Simulation through a student-selected component. 2 An innovative fast feedback loop was used by students to create, test and improve the scenario over a short time period (akin to software beta-testing). The optimum number of cycles necessary to produce a scenario of strong fidelity and value to the learner was identified. Methodology The scenario was tested on five occasions, each with a fresh participant. User feedback from post-scenario questionnaire quantitatively and qualitatively assessed educational value and fidelity to identify improvements for the scenario. This yielded a scenario independently assessed on day 5 to be of professional quality and value. Statistical analysis was performed on feedback questionnaires (Mann-Whitney U test), testing for gross global improvement across all numerical domains of the questionnaire (relevance, effectiveness and quality of the pre-brief, scenario and debrief) and comparing them between participants. Outcomes There was a significant difference between the first(5.3 ± 0.7) and second cycle (8.7 ± 0.5) (p = 0.0002), between cycles 2–3 (9.7 ± 0.5) (p = 0.003) and 3–4 (8.2 ± 1.1) (p = 0.002). However, cycles 4–5 (8.7 ± 0.7) did not show a significant difference in fidelity (p = 0.2). This and qualitative feedback suggests that three cycles are sufficient to achieve a sufficiently high level of fidelity and boost instructor competence. Conclusion Scenario beta-testing is an excellent method of increasing scenario fidelity and providing high-yield tutor experience, especially if tutors are simulation-naive, and three cycles is suggested as an optimal. References Gopal A, Purva M. A pilot of a simulation scenario scripting workshop for medical students: exposing students to teaching and learning using simulation-based medical education. BMJ STEL 2014; 1 (Suppl 1):A1–A88. Fent G, Gopal A, Purva M. Simulation based medical education as a student selected component for medical students. BMJ STEL 2015; 1 (Suppl 2):A1–A67.
- Published
- 2016
- Full Text
- View/download PDF
22. Variation in paediatric hospital antibiotic guidelines in Europe
- Author
-
Spyridis, N. Syridou, G. Goossens, H. Versporten, A. Kopsidas, J. Kourlaba, G. Bielicki, J. Drapier, N. Zaoutis, T. Tsolia, M. Sharland, M. Vergison, A. Léon, V. Delestrait, M. Huza, C. Lepage, P. Mahieu, L. Boy, T. Jansens, H. Van Der Linden, D. Briquet, C. Allegaert, K. Smits, A. Gabriels, P. Vuye, A. Lutsar, I. Tamm, E. Larionova, A. Laan, D. Orbach, M. Lorrot, M. Angoulvant, F. Prot-Labarthe, S. Dubos, F. Lagree, M. Hufnagel, M. Schuster, K. Henneke, P. Roilides, E. Iosifidis, E. Corovessi, V. Michos, A. Galanakis, E. Gkentzi, D. Giacquinto, C. Longo, G. Dona, D. Mion, T. D'Argenio, P. Degli, M.L.C. De Luca, M. Ciliento, G. Esposito, S. Danieli, E. Montinaro, V. Tenconi, R. Nicolini, G. Sviestina, C.I.M. Pavare, J. Rasnaca, K. Gardovska, D. Usonis, V. Grope, I. Gurksniene, V. Eidukaite, A. Biver, A. Brett, A. Esteves, I. Cambrea, S.C. Craiu, M. Tomescu, E. Cizman, M. Babnik, J. Kenda, R. Vidmar, I. Nunez-Cuadros, E. Rojo, P. Lopez-Varela, E. Ureta, N. Perez-Lopez, A. Mosqueda, R. Orta, L. Santos, M. Navarro, M. Santiago, B. Hernandez-Sampelaya, T. Saavedra, J. Pineiro, R. Torel, P. Cano, I.M. Baumann, P. Berger, C. Menson, E. Botgros, A. Doerholt, K. Drysdale, S. Makwana, N. McCorry, A. Garbash, E.M. Chetcutiganado, C. McLeod, M. Caldwell, N. Nash, C. McCullagh, B. Sharpe, D. Tweddell, L. Liese, J.G. Aston, J. Gallagher, A. Satodia, P. Howard-Smith, N. Korinteli, I. Tavchioska, G. Jensen, L. Trethon, A. Unuk, S. Childs, N. Canlas, J.
- Abstract
Objective: To assess the availability and source of guidelines for common infections in European paediatric hospitals and determine their content and characteristics. Design: Participating hospitals completed an online questionnaire on the availability and characteristics of antibiotic prescribing guidelines and on empirical antibiotic treatment including duration of therapy for 5 common infection syndromes: respiratory tract, urinary tract, skin and soft tissue, osteoarticular and sepsis in neonates and children. Results: 84 hospitals from 19 European countries participated in the survey of which 74 confirmed the existence of guidelines. Complete guidelines (existing guidelines for all requested infection syndromes) were reported by 20% of hospitals and the majority (71%) used a range of different sources. Guidelines most commonly available were those for urinary tract infection (UTI) (74%), neonatal sepsis (71%) and sepsis in children (65%). Penicillin and amoxicillin were the antibiotics most commonly recommended for respiratory tract infections (RTIs) (up to 76%), cephalosporin for UTI (up to 50%) and for skin and soft tissue infection (SSTI) and bone infection (20% and 30%, respectively). Antistaphylococcal penicillins were recommended for SSTIs and bone infections in 43% and 36%, respectively. Recommendations for neonatal sepsis included 20 different antibiotic combinations. Duration of therapy guidelines was mostly available for RTI and UTI (82%). A third of hospitals with guidelines for sepsis provided recommendations for length of therapy. Conclusions: Comprehensive antibiotic guideline recommendations are generally lacking from European paediatric hospitals. We documented multiple antibiotics and combinations for most infections. Considerable improvement in the quality of guidelines and their evidence base is required, linking empirical therapy to resistance rates.
- Published
- 2016
23. Development of hybrid electrodialysis-reverse osmosis domestic desalination unit for high recovery of product water
- Author
-
Girish R. Desale, Pushpito Kumar Ghosh, Vinod K. Shahi, Babubhai S. Makwana, and S. K. Thampy
- Subjects
Brackish water ,Chemistry ,Mechanical Engineering ,General Chemical Engineering ,Environmental engineering ,General Chemistry ,Electrodialysis ,Geothermal desalination ,Desalination ,Membrane technology ,Tap water ,General Materials Science ,Water quality ,Reverse osmosis ,Water Science and Technology - Abstract
Reverse osmosis (RO) membrane-based domestic water desalination/purification units have gained wide acceptance even in India. Unfortunately, the recovery of product water from these units varies between 10 and 20% depending on total dissolved solid (TDS) of the feed water. Problem of tap water salinity is increasing, because of ground water depletion. Also, low recovery of product water during desalination is a serious problem, in view of water scarcity. In this manuscript, we are reporting electrodialysis (ED)-RO hybrid process for high recovery of product water from brackish water without compromising on water quality (Indian Patent Application No. 1418/DEL/2010). In hybrid process, ED unit was operated in high TDS region (low system resistance and thus high efficiency), and RO system operated in low TDS region, to reduce salinity load on membrane.
- Published
- 2011
- Full Text
- View/download PDF
24. Synthesis, Spectroscopic, Structural Characterization, and Antimicrobial Studies of 1,3-Dithia-2-arsacyclopentane Derivatives with Oxygen and Sulfur Donor Ligands
- Author
-
Abhilasha Bakshi, Sumit Bhatiya, H. P. S. Chauhan, and K. S. Makwana
- Subjects
Thiophenol ,Organic Chemistry ,chemistry.chemical_element ,Biochemistry ,Sulfur ,Medicinal chemistry ,Inorganic Chemistry ,chemistry.chemical_compound ,chemistry ,Phenol ,Organic chemistry ,Thioglycolic acid ,Benzene ,Thioacetic acid ,Sodium acetate ,Benzoic acid - Abstract
Some mixed 1,3-dithia-2-arsacyclopentane derivatives with oxygen and sulfur donor ligands have been synthesized by the reaction of 2-chloro-1,3-dithia-2-arsacyclopentane and oxygen and sulfur donor ligands (benzoic acid, thiobenzoic acid, sodium acetate, thioacetic acid, phenol, thiophenol, sodium salicylate, and thioglycolic acid) in equimolar ratio (1:1) in refluxing anhydrous benzene solution. These white or yellow solids/liquids derivatives have been characterized by melting points, molecular weights, elemental analyses (C, H, S, and As), and spectroscopic [UV, IR as well as NMR (1H and 13C)] studies. Tentative structures are proposed on the basis of the spectroscopic results. The free ligands and the corresponding arsenic compounds exhibited good activities as antibacterial and antifungal agents on some selected bacterial and fungal strains. Chloroamphenicol and terbinafin were used as standards for comparison. Supplemental materials are available for this article. Go to the publisher's onli...
- Published
- 2011
- Full Text
- View/download PDF
25. A novel electrodialyzer for the production of demineralized water by electrodialysis
- Author
-
S.K. Thampy, R. Rangarajan, Vinod K. Shahi, and B. S. Makwana
- Subjects
Chemistry ,Mechanical Engineering ,General Chemical Engineering ,Analytical chemistry ,Mineralogy ,General Chemistry ,Electrolyte ,Electrodialysis ,Conductivity ,Volumetric flow rate ,Anode ,Membrane technology ,Demineralization ,Stack (abstract data type) ,General Materials Science ,Water Science and Technology - Abstract
A twin electrodialyzer with a common anode, in which first an ED stack was packed with non-conductingspacers and second an ED stack was packed with ion-conducting spacers, was developed and tested under various experimental conditions. Experiments were conducted on a laboratory scale at different voltage and flow rates. Each membrane had an effective area of 65 cm2. Two configurations of the twin electrodialyzer [configuration (1), ED stack 1:7 cell pairs and ED stack 2: 7 cell pairs; configuration (2), ED stack 1:10 cell pairs and ED stack 2: 7 cell pairs] were optimized for the production of demineralized water. The results show that from inlet NaCl solutions of 500 and 800 ppm concentrations with conductivity 0.75 and 1.26 mS cm−1, respectively, with a linear velocity 2.52×10−3 m s−1 and at applied voltage 1.5 to 2.0 V/cell pair, an outlet conductivity ranging between 15.0 to 20.0 μS cm−1 was obtained using a twin electrodialyzer. It was concluded that with the twin electrodialyzer, both the stacks perform in an efficient manner, and it is possible to achieve a high degree of demineralization at a lower flow rate and low electrolyte concentration.
- Published
- 2003
- Full Text
- View/download PDF
26. Performance of the first sea water electrodialysis desalination plant in India
- Author
-
B. S. Makwana, N.J. Dave, D. K. Chauhan, S. K. Thampy, P.K. Narayanan, V.K. Indusekhar, and S.K. Adhikary
- Subjects
Engineering ,education.field_of_study ,Waste management ,business.industry ,Mechanical Engineering ,General Chemical Engineering ,Population ,Environmental engineering ,General Chemistry ,Electrodialysis ,Desalination ,Weep ,Nameplate capacity ,Potable water ,General Materials Science ,Seawater ,Stage (hydrology) ,business ,education ,Water Science and Technology - Abstract
The problem of potable Water shortage in some of the islands and coastal areas of India has led to consider sea water desalination for potable purposes. One of the membrane processes, namely, the electrodialysis(ED) has been designed and fabricated to meet the demand of a section of the population of Kavaratti island (Lakshad weep, Union Territory). The plant having a capacity of 5.5 m 3 /day is based on two stage reduction of salt wherein the first stage reduction upto 85% is achieved by recirculation of sea water. The plant commissioned in February, 1989 is running satisfactorily to its rated capacity. Useful information obtained during the period of first one year is reported here. A novel method of preventing scale formation and other salient features are brought about. An awareness is being created to go in for such plants in near future based on the performance of the above first experimental unit.
- Published
- 1991
- Full Text
- View/download PDF
27. Spirometric measurements among quartz stone ex-workers of Gujarat, India
- Author
-
Raj Narain, Rajnarayan R Tiwari, Bhupendra D Patel, Ishwar S Makwana, and Habibullah N. Saiyed
- Subjects
Spirometry ,Adult ,medicine.medical_specialty ,Vital capacity ,Cross-sectional study ,Silicosis ,India ,Silicotuberculosis ,Interviews as Topic ,FEV1/FVC ratio ,Risk Factors ,Internal medicine ,Occupational Exposure ,medicine ,Humans ,Respiratory system ,Analysis of Variance ,Lung ,medicine.diagnostic_test ,business.industry ,Pneumoconiosis ,Public Health, Environmental and Occupational Health ,Quartz ,Middle Aged ,medicine.disease ,Surgery ,medicine.anatomical_structure ,Cross-Sectional Studies ,Female ,business - Abstract
The present cross sectional study was carried out among 134 ex-workers from quartz stone crushing units. Using the interview technique as a tool for data collection, demographic and occupational details of the subjects were recorded on the predesigned proforma. Standard diagnostic criteria were used for diagnosing silicosis and silico-tuberculosis. The pulmonary functions of the subjects were measured with Spirovit SP-10. The mean age of the males was found to be 33.18 +/- 10.39 yr and that of the females was 30.10 +/- 9.3 yr and for the whole group was 31.77 +/- 9.99 yr. Mean duration of exposure was 2.74 +/- 1.65 yr. The study variables included age, sex, duration of exposure, smoking and respiratory morbidity. Forced Vital Capacity (FVC) which suggests lung parenchymal disorders was found to be significantly reduced with female sex, presence of smoking, increasing duration of exposure and presence of pneumoconiosis, whereas the lung function parameters indicating the status of airways were found to be significantly reduced with all the factors. Therefore, it was concluded that quartz stone workers exposed to approximately 100% free silica had deteriorated lung function which can be attributed mainly to respiratory disorders along with other epidemiological factors such as age, sex, duration of exposure and smoking.
- Published
- 2003
28. Comparative Efficacy Study of Different Types of IonExchange Membranes for Production of Ultrapure Water via Electrodeionization.
- Author
-
Vaibhavee Bhadja, Babubhai S Makwana, Subarna Maiti, Saroj Sharma, and Uma Chatterjee
- Subjects
- *
WATER purification , *ION-permeable membranes , *COMPARATIVE studies , *ELECTRONIC industries , *PHARMACEUTICAL industry , *POLYETHYLENE - Abstract
High purity ultrapure water is requiredin the electronics andpharmaceutical industries. Herein, we report production of high purityultrapure water (18.5 L/h) by electrodeionization (EDI) techniquein a laboratory scale EDI unit (effective membrane area 24 cm ×6 cm) using polyethylene interpolymer based ion-exchange membranes.The ultrapure water also prepared by EDI process in the same EDI unitusing two different types of commercial membranes (Ionsep and Fujifilmtype II). The resistance of ultrapure water was 18.2 MΩ cm withthe interpolymer based membranes at 25 V/cell pair applied potential,whereas with commercial Ionsep and Fujifilm type II membranes thefinal resistance of ultrapure water was 15 MΩ cm and 17.1 MΩcm respectively at 30 V/cell pair applied potential. The power consumption(W) and current efficiency (CE) values were 0.324 KWhkg–1and 58.86% respectively for interpolymer based ion-exchange membranes,whereas for Ionsep and Fujifilm type II membranes, W and CE valueswere 0.658 and 0.43 KWhkg–1and 34.83% and 53.88%,respectively. The better quality of ultrapure water produced withinterpolymer membrane and the better efficacy of the EDI process withthe interpolymer membrane compared to other two membranes is ascribedto the lower water uptake, high transport number, and lower ion backdiffusion through the former membrane. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
29. Development and validation of an open-source pipeline for automatic population of case report forms from electronic health records: a pediatric multi-center prospective study.
- Author
-
Gutiérrez-Sacristán A, Makwana S, Dionne A, Mahanta S, Dyer KJ, Serrano F, Watrin C, Pages P, Mousavi S, Degala A, Lyons J, Pillion D, Zachariasse JM, Shekerdemian LS, Truong DT, Newburger JW, and Avillach P
- Subjects
- Humans, Prospective Studies, Child, Female, Software, Male, Electronic Health Records
- Abstract
Background: Clinical trials and registry studies are essential for advancing research and developing novel treatments. However, these studies rely on manual entry of thousands of variables for each patient. Repurposing real-world data can significantly simplify the data collection, reduce transcription errors, and make the data entry process more efficient, consistent, and cost-effective., Methods: We developed an open-source computational pipeline to collect laboratory and medication information from the electronic health record (EHR) data and populate case report forms. The pipeline was developed and validated with data from two independent pediatric hospitals in the US as part of the Long-terM OUtcomes after Multisystem Inflammatory Syndrome In Children (MUSIC) study. Our pipeline allowed the completion of two of the most time-consuming forms. We compared automatically extracted results with manually entered values in one hospital and applied the pipeline to a second hospital, where the output served as the primary data source for case report forms., Findings: We extracted and populated 51,845 laboratory and 4913 medication values for 159 patients in two hospitals participating in a prospective pediatric study. We evaluated pipeline performance against data for 104 patients manually entered by clinicians in one of the hospitals. The highest concordance was found during patient hospitalization, with 91.59% of the automatically extracted laboratory and medication values corresponding with the manually entered values. In addition to the successfully populated values, we identified an additional 13,396 laboratory and 567 medication values of interest for the study., Interpretation: The automatic data entry of laboratory and medication values during admission is feasible and has a high concordance with the manually entered data. By implementing this proof of concept, we demonstrate the quality of automatic data extraction and highlight the potential of secondary use of EHR data to advance medical science by improving data entry efficiency and expediting clinical research., Funding: NIH Grant 1OT3HL147154-01, U24HL135691, UG1HL135685., Competing Interests: Declaration of interests The authors declare no competing interest., (Copyright © 2024 The Author(s). Published by Elsevier B.V. All rights reserved.)
- Published
- 2024
- Full Text
- View/download PDF
30. Identification and characterisation of functional K ir 6.1-containing ATP-sensitive potassium channels in the cardiac ventricular sarcolemmal membrane.
- Author
-
Brennan S, Chen S, Makwana S, Esposito S, McGuinness LR, Alnaimi AIM, Sims MW, Patel M, Aziz Q, Ojake L, Roberts JA, Sharma P, Lodwick D, Tinker A, Barrett-Jolley R, Dart C, and Rainbow RD
- Subjects
- Animals, Male, Rats, Action Potentials drug effects, Rats, Sprague-Dawley, Potassium Channels, Inwardly Rectifying metabolism, Potassium Channels, Inwardly Rectifying antagonists & inhibitors, Patch-Clamp Techniques, KATP Channels metabolism, Heart Ventricles metabolism, Heart Ventricles cytology, Heart Ventricles drug effects, Sarcolemma metabolism, Sarcolemma drug effects, Myocytes, Cardiac drug effects, Myocytes, Cardiac metabolism
- Abstract
Background and Purpose: The canonical K
ir 6.2/SUR2A ventricular KATP channel is highly ATP-sensitive and remains closed under normal physiological conditions. These channels activate only when prolonged metabolic compromise causes significant ATP depletion and then shortens the action potential to reduce contractile activity. Pharmacological activation of KATP channels is cardioprotective, but physiologically, it is difficult to understand how these channels protect the heart if they only open under extreme metabolic stress. The presence of a second KATP channel population could help explain this. Here, we characterise the biophysical and pharmacological behaviours of a constitutively active Kir 6.1-containing KATP channel in ventricular cardiomyocytes., Experimental Approach: Patch-clamp recordings from rat ventricular myocytes in combination with well-defined pharmacological modulators was used to characterise these newly identified K+ channels. Action potential recording, calcium (Fluo-4) fluorescence measurements and video edge detection of contractile function were used to assess functional consequences of channel modulation., Key Results: Our data show a ventricular K+ conductance whose biophysical characteristics and response to pharmacological modulation were consistent with Kir 6.1-containing channels. These Kir 6.1-containing channels lack the ATP-sensitivity of the canonical channels and are constitutively active., Conclusion and Implications: We conclude there are two functionally distinct populations of ventricular KATP channels: constitutively active Kir 6.1-containing channels that play an important role in fine-tuning the action potential and Kir 6.2/SUR2A channels that activate with prolonged ischaemia to impart late-stage protection against catastrophic ATP depletion. Further research is required to determine whether Kir 6.1 is an overlooked target in Comprehensive in vitro Proarrhythmia Assay (CiPA) cardiac safety screens., (© 2024 The Authors. British Journal of Pharmacology published by John Wiley & Sons Ltd on behalf of British Pharmacological Society.)- Published
- 2024
- Full Text
- View/download PDF
31. Comparative Evaluation of Tear Strength and Tensile Strength of Different Types of Gingival Mask Materials: An In Vitro Study.
- Author
-
Raval Z, Vaishnav K, Sanghani T, Thakar S, Patel R, Joshi R, Makwana S, and Yohannan JA
- Abstract
Introduction: The implant-supported prosthetic treatment strategy is commonly chosen in modern dentistry to address tooth loss caused by a variety of conditions or dental defects. To achieve healthy and natural-looking results in implant dentistry, it is essential to replicate the peri-implant soft tissue. The gingival tissue that surrounds implants is quite accurately replicated by gingival masks. They facilitate more accurate prosthesis restoration design, enhance periodontal health, and promote oral cleanliness. Furthermore, gingival masks allow for the accurate observation of superstructure seating on implant analogs, which is essential for creating superstructures that fit perfectly., Aim and Objective: To evaluate the change in tear strength and tensile strength of three different gingival mask materials (esthetic mask auto mix, Gi-Mask and Gingifast Rigid) available in the market at various time intervals., Materials and Methods: Total of 540 specimens were fabricated with 180 samples of each group. Changes in tensile strength and tear strength of three different gingival mask materials (esthetic mask auto mix, Gi-Mask and Gingifast Rigid) at intervals of one day, three days, and seven days were measured by a universal testing machine. Statistical analysis was done using one-way ANOVA and Tukey Post Hoc test. We also performed correlation and regression analyses on tear and tensile strength., Results: The null hypothesis, which is supported by these data, claims that there is no discernible variation in the tear strength and tensile strength of three distinct materials across various time intervals. Thus, the null hypothesis was rejected, and it was concluded that there was a significant change in the tear strength and tensile strength of these gingival mask materials at different time intervals. Esthetic mask auto mix has a high tear strength compared to Gi-Mask and gingifast rigid. Gi-Mask has the least tear strength among all three. Tensile strength decreases as time increases, but the Esthetic mask auto mix has high strength compared to Gi-Mask and gingifast rigid., Conclusion: Selecting the right material for gingival masks is essential, taking into account the clinical scenario and the articulation time. Time influences gingival mask materials' tear strength and tensile strength, which impacts their performance and durability. Esthetic mask auto mix has a high tear and tensile strength compared to Gi-Mask and gingifast rigid., 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, Raval et al.)
- Published
- 2024
- Full Text
- View/download PDF
32. Neurological diagnoses in hospitalized COVID-19 patients associated with adverse outcomes: A multinational cohort study.
- Author
-
Hutch MR, Son J, Le TT, Hong C, Wang X, Shakeri Hossein Abad Z, Morris M, Gutiérrez-Sacristán A, Klann JG, Spiridou A, Batugo A, Bellazzi R, Benoit V, Bonzel CL, Bryant WA, Chiudinelli L, Cho K, Das P, González González T, Hanauer DA, Henderson DW, Ho YL, Loh NHW, Makoudjou A, Makwana S, Malovini A, Moal B, Mowery DL, Neuraz A, Samayamuthu MJ, Sanz Vidorreta FJ, Schriver ER, Schubert P, Talbert J, Tan ALM, Tan BWL, Tan BWQ, Tibollo V, Tippman P, Verdy G, Yuan W, Avillach P, Gehlenborg N, Omenn GS, Visweswaran S, Cai T, Luo Y, and Xia Z
- Abstract
Few studies examining the patient outcomes of concurrent neurological manifestations during acute COVID-19 leveraged multinational cohorts of adults and children or distinguished between central and peripheral nervous system (CNS vs. PNS) involvement. Using a federated multinational network in which local clinicians and informatics experts curated the electronic health records data, we evaluated the risk of prolonged hospitalization and mortality in hospitalized COVID-19 patients from 21 healthcare systems across 7 countries. For adults, we used a federated learning approach whereby we ran Cox proportional hazard models locally at each healthcare system and performed a meta-analysis on the aggregated results to estimate the overall risk of adverse outcomes across our geographically diverse populations. For children, we reported descriptive statistics separately due to their low frequency of neurological involvement and poor outcomes. Among the 106,229 hospitalized COVID-19 patients (104,031 patients ≥18 years; 2,198 patients <18 years, January 2020-October 2021), 15,101 (14%) had at least one CNS diagnosis, while 2,788 (3%) had at least one PNS diagnosis. After controlling for demographics and pre-existing conditions, adults with CNS involvement had longer hospital stay (11 versus 6 days) and greater risk of (Hazard Ratio = 1.78) and faster time to death (12 versus 24 days) than patients with no neurological condition (NNC) during acute COVID-19 hospitalization. Adults with PNS involvement also had longer hospital stay but lower risk of mortality than the NNC group. Although children had a low frequency of neurological involvement during COVID-19 hospitalization, a substantially higher proportion of children with CNS involvement died compared to those with NNC (6% vs 1%). Overall, patients with concurrent CNS manifestation during acute COVID-19 hospitalization faced greater risks for adverse clinical outcomes than patients without any neurological diagnosis. Our global informatics framework using a federated approach (versus a centralized data collection approach) has utility for clinical discovery beyond COVID-19., Competing Interests: All authors report no competing interests or conflicts of interest. JGK reports a consulting relationship with the i2b2-tranSMART Foundation through Invocate, Inc. RB reports being a shareholder of Biomeris s.r.l. and Engenome s.r.l. DAH reports entitled to royalties from the University of Michigan for licensing of the EMERSE "synonyms". AM’s work is being funded by the Federal Ministry of Education and Research (BMBF) in Germany in the framework of the MIRACUM Consortium. AM reports being a shareholder of Biomeris s.r.l. BM reports being co-founder and equity owner from DESKI. DLM has received research support from the National Institutes of Health, Department of Veteran Affairs, and the University of Pittsburgh/Pittsburgh Health Data Alliance outside of this work. PA reports consulting for CCHMC and BCH. NG is a co-founder and equity owner of Datavisyn. ZX has served as a Consultant for Genentech/Roche. The institution of ZX has received research support from the National Institute of Health, the National Multiple Sclerosis Society, Food and Drug Administration, the Pittsburgh Foundation, the PNC Charitable Trust, the Ethel Vincent Trust, and Genentech / Roche., (Copyright: This is an open access article, free of all copyright, and may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose. The work is made available under the Creative Commons CC0 public domain dedication.)
- Published
- 2024
- Full Text
- View/download PDF
33. Thyroid and Its Ripple Effect: Impact on Cardiac Structure, Function, and Outcomes.
- Author
-
Olanrewaju OA, Asghar R, Makwana S, Yahya M, Kumar N, Khawar MH, Ahmed A, Islam T, Kumari K, Shadmani S, Ali M, Kumar S, Khatri M, Varrassi G, and Mohamad T
- Abstract
Thyroid dysfunction is a widespread and complex issue in the field of endocrine disorders. It has a significant impact on multiple physiological systems, particularly on the heart. This review explores the complex interaction between thyroid dysfunction and cardiac dynamics, examining the detailed network of molecular, cellular, and systemic changes that underlie the close connection between these two physiological areas. Thyroid dysfunction, which includes both hyperthyroidism and hypothyroidism, is a common endocrine condition that affects millions of people worldwide. The thyroid hormones thyroxine and triiodothyronine regulate various metabolic activities essential for maintaining cellular balance. Disruptions in thyroid function result in widespread consequences, affecting the cardiovascular system. Thyroid hormones directly impact cardiac muscle cells, controlling their ability to contract, their electrical properties, and their reaction to hypertrophy. Thyroid dysfunction goes beyond the level of individual cells and involves complex interactions among vascular dynamics, neurohormonal control, and endothelial function. These factors all contribute to the development of cardiovascular illness. The impact of thyroid dysfunction on cardiac structure, function, and outcomes is not limited to a one-way pattern. Instead, it involves a dynamic two-way interaction. The manifestations of this condition can vary from minor changes in the electrical activity of the heart to more obvious structural abnormalities, such as an increase in the size of the heart muscle and a decrease in its ability to relax during the filling phase. Furthermore, the correlation between thyroid dysfunction and adverse cardiovascular outcomes, such as heart failure and arrhythmias, highlights the clinical importance of this connection. This review provides a complete overview of the relationship between thyroid dysfunction and cardiac dynamics by analyzing a wide range of research from clinical, molecular, and epidemiological perspectives. This study seeks to enhance our comprehension of the comprehensive effects of thyroid dysfunction on the anatomy and function of the heart by explaining the complex molecular mechanisms and systemic consequences. The goal is to establish a basis for informed clinical treatment and future research efforts., Competing Interests: The authors have declared that no competing interests exist., (Copyright © 2024, Olanrewaju et al.)
- Published
- 2024
- Full Text
- View/download PDF
34. Uncovering Flat and Hierarchical Topics by Community Discovery on Word Co-occurrence Network.
- Author
-
Austin E, Makwana S, Trabelsi A, Largeron C, and Zaïane OR
- Abstract
Topic modeling aims to discover latent themes in collections of text documents. It has various applications across fields such as sociology, opinion analysis, and media studies. In such areas, it is essential to have easily interpretable, diverse, and coherent topics. An efficient topic modeling technique should accurately identify flat and hierarchical topics, especially useful in disciplines where topics can be logically arranged into a tree format. In this paper, we propose Community Topic, a novel algorithm that exploits word co-occurrence networks to mine communities and produces topics. We also evaluate the proposed approach using several metrics and compare it with usual baselines, confirming its good performances. Community Topic enables quick identification of flat topics and topic hierarchy, facilitating the on-demand exploration of sub- and super-topics. It also obtains good results on datasets in different languages., (© The Author(s) 2024.)
- Published
- 2024
- Full Text
- View/download PDF
35. Metformin prevents osteoblast-like potential and calcification in lung cancer A549 cells.
- Author
-
Yadav P, Makwana S, Bansal S, Soni S, Mahapatra MK, Bandyopadhayaya S, Tailor R, Shrivastava SK, Sharma LK, and Mandal CC
- Subjects
- Male, Humans, Core Binding Factor Alpha 1 Subunit genetics, Core Binding Factor Alpha 1 Subunit metabolism, Epithelial-Mesenchymal Transition, A549 Cells, Cell Differentiation, Osteoblasts metabolism, Osteogenesis, Lung Neoplasms metabolism, Metformin pharmacology
- Abstract
In spite of recent advances made in understanding its progression, cancer is still a leading cause of death across the nations. Molecular pathophysiology of these cancer cells largely differs depending on cancer types and even within the same tumor. Pathological mineralization/calcification is seen in various tissues including breast, prostate, and lung cancer. Osteoblast-like cells derived after trans-differentiation of mesenchymal cells usually drive calcium deposition in various tissues. This study aims to explore the presence of osteoblast-like potential in lung cancer cells and its prevention. ALP assay, ALP staining, nodule formation, RT-PCR, RT-qPCR, and western blot analysis experiments were carried out in lung cancer A549 cells to achieve said objective. Expressions of various osteoblast markers (e.g., ALP, OPN, RUNX2, and Osterix) along with osteoinducer genes (BMP-2 and BMP-4) were observed in A549 cells. Moreover, ALP activity and ability leading to nodule formation revealed the presence of osteoblast-like potential in lung cancer cells. Here, BMP-2 treatment increased expressions of osteoblast transcription factors such as RUNX2 and Osterix, enhanced ALP activity, and augmented calcification in this cell line. It was also observed that antidiabetic metformin inhibited BMP-2 mediated increase in osteoblast-like potential and calcification in these cancer cells. The current study noted that metformin blocked BMP-2 mediated increase in epithelial to mesenchymal transition (EMT) in A549 cells. The above findings for the first time unravel that A549 cells possess osteoblast-like potential which drives lung cancer calcification. Metformin might prevent BMP-2 induced osteoblast-like phenotype of the lung cancer cells with concomitant inhibition of EMT to inhibit lung cancer tissue calcification., (© 2023 Wiley Periodicals LLC.)
- Published
- 2023
- Full Text
- View/download PDF
36. Clinical phenotypes and outcomes in children with multisystem inflammatory syndrome across SARS-CoV-2 variant eras: a multinational study from the 4CE consortium.
- Author
-
Sperotto F, Gutiérrez-Sacristán A, Makwana S, Li X, Rofeberg VN, Cai T, Bourgeois FT, Omenn GS, Hanauer DA, Sáez C, Bonzel CL, Bucholz E, Dionne A, Elias MD, García-Barrio N, González TG, Issitt RW, Kernan KF, Laird-Gion J, Maidlow SE, Mandl KD, Ahooyi TM, Moraleda C, Morris M, Moshal KL, Pedrera-Jiménez M, Shah MA, South AM, Spiridou A, Taylor DM, Verdy G, Visweswaran S, Wang X, Xia Z, Zachariasse JM, Newburger JW, and Avillach P
- Abstract
Background: Multisystem inflammatory syndrome in children (MIS-C) is a severe complication of SARS-CoV-2 infection. It remains unclear how MIS-C phenotypes vary across SARS-CoV-2 variants. We aimed to investigate clinical characteristics and outcomes of MIS-C across SARS-CoV-2 eras., Methods: We performed a multicentre observational retrospective study including seven paediatric hospitals in four countries (France, Spain, U.K., and U.S.). All consecutive confirmed patients with MIS-C hospitalised between February 1st, 2020, and May 31st, 2022, were included. Electronic Health Records (EHR) data were used to calculate pooled risk differences (RD) and effect sizes (ES) at site level, using Alpha as reference. Meta-analysis was used to pool data across sites., Findings: Of 598 patients with MIS-C (61% male, 39% female; mean age 9.7 years [SD 4.5]), 383 (64%) were admitted in the Alpha era, 111 (19%) in the Delta era, and 104 (17%) in the Omicron era. Compared with patients admitted in the Alpha era, those admitted in the Delta era were younger (ES -1.18 years [95% CI -2.05, -0.32]), had fewer respiratory symptoms (RD -0.15 [95% CI -0.33, -0.04]), less frequent non-cardiogenic shock or systemic inflammatory response syndrome (SIRS) (RD -0.35 [95% CI -0.64, -0.07]), lower lymphocyte count (ES -0.16 × 10
9 /uL [95% CI -0.30, -0.01]), lower C-reactive protein (ES -28.5 mg/L [95% CI -46.3, -10.7]), and lower troponin (ES -0.14 ng/mL [95% CI -0.26, -0.03]). Patients admitted in the Omicron versus Alpha eras were younger (ES -1.6 years [95% CI -2.5, -0.8]), had less frequent SIRS (RD -0.18 [95% CI -0.30, -0.05]), lower lymphocyte count (ES -0.39 × 109 /uL [95% CI -0.52, -0.25]), lower troponin (ES -0.16 ng/mL [95% CI -0.30, -0.01]) and less frequently received anticoagulation therapy (RD -0.19 [95% CI -0.37, -0.04]). Length of hospitalization was shorter in the Delta versus Alpha eras (-1.3 days [95% CI -2.3, -0.4])., Interpretation: Our study suggested that MIS-C clinical phenotypes varied across SARS-CoV-2 eras, with patients in Delta and Omicron eras being younger and less sick. EHR data can be effectively leveraged to identify rare complications of pandemic diseases and their variation over time., Funding: None., Competing Interests: The authors have no conflicts of interests to declare related to the content of this manuscript. JNW has research grant funding from National Heart, Lung, and Blood Institute (NHLBI), the Department of Defense, the Centres for Disease Control (CDC), and Pfizer; has been a consultant for Pfizer; chaired the Independent Events Adjudication Committees for Novartis, Pfizer, and Bristol-Myer-Squibb; and received honoraria from Daiichi Sankyo for service on the Steering Committee of the ENNOBLE-ATE Trial and from UpToDate. GSO has research grant funding from the National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), and from the National Cancer Institute (NCI). DAH has research grant funding from the National Center for Advancing Translational Sciences (NCATS). TGG has research grant funding from the Institute of Health Carlos III, the European Regional Development Fund (ERDF), the National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), and National Cancer Institute (NCI). KFK has research grant funding from the National Institute of Child Health and Human Development (NIHCD). SEM has research grant funding from the National Center for Advancing Translational Sciences (NCATS). AD has research grant funding from Pfizer. DMT has research grant funding from NIH. AMS has research grant funding from the National Heart, Lung, and Blood Institute (NHLBI) and from the National Center for Advancing Translational Sciences (NCATS). GV has internal research funding from the Centre Hospitalier Universitaire de Bordeaux. ZX has research grant funding from the National Institute of Neurological Disorders and Stroke (NINDS). None of these funding sources had any role in supporting the study design; in the collection, analysis, and interpretation of data; in the writing of the report; or in the decision to submit the paper for publication. All the other authors have no conflicts of interests to declare., (© 2023 The Authors.)- Published
- 2023
- Full Text
- View/download PDF
37. Evaluation of Efficacy of Ultrasonography as an Additional Diagnostic Tool for Deciding Management Protocol of Odontogenic Superficial Fascial Space Infections: A Prospective Clinical Study.
- Author
-
Shah N, Patel S, Rupawala T, Makwana S, Mansuri S, and Bhimani K
- Abstract
Objective: To explore the efficacy of ultrasonography as an additional diagnostic tool in superficial odontogenic fascial space infections of maxillofacial region and modifying the treatment plan when needed., Materials and Methods: Forty patients with superficial fascial space infections underwent a detailed clinical, plain radiological and ultrasonographic examination. Based on the ultrasonographic findings, final diagnosis was made and compared with clinical findings. Patients diagnosed with cellulitis were given medical line of treatment, and those with abscess were subjected to incision and drainage along with standard general supportive care and removal of etiologic agent., Results: In this study, out of 40 patients (male = 22, female = 18), clinical diagnosis of cellulitis was made in 26 cases (65%) and abscess in 14 (35.0%). On USG examination, cellulitis was present in 21 cases (52.5%), while abscess in 19 (47.5%). Final diagnosis of cellulitis was made in 13 (59.1%) males and 12(66.7%) females, while abscess was confirmed in 9 (40.9%) male and 6 (33.3%) female patients. The results showed that sensitivity of the clinical examination alone was 64% with 33% specificity, and for USG, sensitivity was 84% with specificity of 100%., Conclusion: The adjuvant role of ultrasonography in the diagnosis and timely management of superficial fascial space infections is promising owing to its accessibility, relative safety, repeatability and cost-effectiveness., Competing Interests: Conflict of interestThe authors declare that they have no conflict of interest., (© The Association of Oral and Maxillofacial Surgeons of India 2021.)
- Published
- 2022
- Full Text
- View/download PDF
38. Selective protein kinase C inhibition switches time-dependent glucose cardiotoxicity to cardioprotection.
- Author
-
Brennan S, Esposito S, Abdelaziz MIM, Martin CA, Makwana S, Sims MW, Squire IB, Sharma P, Chadwick AE, and Rainbow RD
- Abstract
Hyperglycaemia at the time of myocardial infarction has an adverse effect on prognosis irrespective of a prior diagnosis of diabetes, suggesting glucose is the damaging factor. In ex vivo models of ischaemia, we demonstrated that deleterious effects of acutely elevated glucose are PKCα/β-dependent, and providing PKCα/β are inhibited, elevated glucose confers cardioprotection. Short pre-treatments with high glucose were used to investigate time-dependent glucose cardiotoxicity, with PKCα/β inhibition investigated as a potential mechanism to reverse the toxicity. Freshly isolated non-diabetic rat cardiomyocytes were exposed to elevated glucose to investigate the time-dependence toxic effects. High glucose challenge for >7.5 min was cardiotoxic, proarrhythmic and lead to contractile failure, whilst cardiomyocytes exposed to metabolic inhibition following 5-min high glucose, displayed a time-dependent protection lasting ∼15 min. This protection was further enhanced with PKCα/β inhibition. Cardioprotection was measured as a delay in contractile failure and K
ATP channel activation, improved contractile and Ca2+ transient recovery and increased cell survival. Finally, the effects of pre-ischaemic treatment with high glucose in a whole-heart coronary ligation protocol, where protection was evident with PKCα/β inhibition. Selective PKCα/β inhibition enhances protection suggesting glycaemic control with PKC inhibition as a potential cardioprotective therapeutics in myocardial infarction and elective cardiac surgery., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Brennan, Esposito, Abdelaziz, Martin, Makwana, Sims, Squire, Sharma, Chadwick and Rainbow.)- Published
- 2022
- Full Text
- View/download PDF
39. The Role of Pleural Fluid C-Reactive Protein in the Diagnosis of Exudative Pleural Effusions.
- Author
-
Makwana S, Gohil P, and Gabhawala Y
- Abstract
Background and objective Pleural effusion develops when there is disequilibrium between pleural fluid formation and absorption. Light's criteria are currently used to differentiate transudative from exudative effusion. If the pleural effusion is exudative, it requires extensive diagnostic workup to identify the local cause of the effusion. Pleural fluid cell count and differentials, glucose level, adenosine deaminase (ADA), fluid GeneXpert for Mycobacterium tuberculosis (MTb), fluid culture, and cytology are currently used for further evaluation of exudative pleural effusions. However, the sensitivity and specificity of the above tests are not dependable. The pleural fluid C-reactive protein (CRP) is likely to reflect serum CRP levels because the CRP in the pleural fluid may be caused by increased diffusion from the blood due to inflamed capillary leakage. In this study, we aimed to examine the role of pleural fluid CRP levels in the differential diagnosis of exudative effusion. Materials and methods Based on Light's criteria, this study included 100 patients with exudative pleural effusion. Serum CRP and pleural fluid CRP were assessed with the CRP-Turbilatex-quantitative turbidometric immunoassay method based on the principle of an agglutination reaction. Receiver operating characteristic (ROC) curves were generated by plotting sensitivity against 1-specificity, and the area under the curve (AUC) with a 95% confidence interval (CI) was calculated. After data collection, statistical analysis was performed using SPSS Statistics v28.0 (IBM, Armonk, NY). Results Our study showed a significant difference in pleural fluid CRP levels (p<0.001). Pleural fluid CRP was significantly higher in the empyema and parapneumonic groups compared to tuberculous and malignant effusions. The optimal cut-off value of CRP ≥47.4 mg/dl yielded 87.5% sensitivity and 92.5% specificity in differentiating parapneumonic effusion from tuberculous effusion. Pleural fluid CRP proved to be an excellent marker for distinguishing parapneumonic effusion from malignancy (cut-off value ≥49.2 mg/dl, 75% sensitivity, and 85.7% specificity) and parapneumonic plus empyema from tuberculous effusion plus malignant effusion (cut-off value ≥47.4 mg/dl, 84.6% sensitivity, and 90.8% specificity). Conclusion Pleural fluid CRP levels can be used as an additional tool in the differential diagnosis of exudative effusion. It significantly differentiates parapneumonic effusion and empyema from tuberculous and malignant effusions., Competing Interests: The authors have declared that no competing interests exist., (Copyright © 2022, Makwana et al.)
- Published
- 2022
- Full Text
- View/download PDF
40. Correlation Between Serum Magnesium Level and Acute Exacerbation in Patients With Chronic Obstructive Pulmonary Disease (COPD).
- Author
-
Makwana S, Patel A, and Sonagara M
- Abstract
Introduction Although chronic obstructive pulmonary disease (COPD) is preventable and treatable, it is a major public health problem. The mortality risks are higher in patients with exacerbations. Magnesium (Mg) is crucial in numerous physiological processes, including membrane stabilization. However, incomplete information is available regarding the effect of magnesium on the frequency of acute exacerbation of COPD. Objectives To determine the serum magnesium level in COPD patients and its correlation with acute exacerbation of COPD. Materials and methods This cross-sectional study included 100 patients diagnosed with acute exacerbation of COPD. The serum magnesium level was measured in all patients with acute exacerbation of COPD at admission. Serum Mg level <1.7 mg/dl was considered hypomagnesemia. The correlation between serum magnesium level and duration of hospital stay and patient outcome was studied. Results In the present study, hypomagnesemia was reported in 57% of patients with acute exacerbation of COPD. The duration of hospital stay (more than seven days) among hypomagnesemia (80.7%) patients was significantly higher than that of the normomagnesemia patients (55.8%). Mortality in patients with hypomagnesemia was higher than in patients with normomagnesemia, although not statistically significant. Conclusion Hypomagnesaemia is a common finding in acute exacerbation of COPD. The level of magnesium found is related to the length of hospital stay, but it is not related to mortality among patients with acute exacerbation of COPD. Further studies with larger sample sizes and extended follow-up periods are required to validate the results., Competing Interests: The authors have declared that no competing interests exist., (Copyright © 2022, Makwana et al.)
- Published
- 2022
- Full Text
- View/download PDF
41. Simvastatin ameliorates oxidative stress levels in HepG2 cells and hyperlipidemic rats.
- Author
-
Verma K, Makwana S, Paliwal S, Paliwal V, Jain S, Paliwal S, and Sharma S
- Abstract
Simvastatin is an established anti-hyperlipidemic drug and few studies have indicated its role in the mitigation of oxidative stress. However, a systematic study considering molecular binding/interaction of simvastatin with anti-oxidant enzymes followed by confirmational in vitro and in vivo studies have never been done. We investigated the molecular binding of simvastatin with multiple anti-oxidant enzymes and assessed their levels after the treatment of simvastatin in vitro and in vivo . This study is the first to show the molecular binding of simvastatin to catalase through molecular docking analysis. Moreover, the anti-oxidative properties of simvastatin have not been studied in Lipopolysaccharide (LPS) induced oxidative stress in HepG2 cells. We found that simvastatin effectively attenuated oxidative stress in LPS induced HepG2 cells and high-fat diet (HFD) fed hyperlipidemic rats by increasing the levels of antioxidant enzymes. The activity of catalase and superoxide dismutase (SOD) both increased significantly in oxidatively stressed HepG2 cells after the treatment with simvastatin (10 μM, 24 h). In addition to this, he original cell morphology of oxidatively stressed cells was restored by simvastatin, and an increase in antioxidant enzymes, catalase (0.08 U/cells to 0.12 U/cells), and SOD (0.57 U/cells to 0.74 U/cells) was also noted in HepG2 cells. Furthermore, a significant increase in the antioxidant enzymes such as Catalase, SOD, and reduced glutathione (GSH) was noted after simvastatin treatment in the HFD model. Moreover, we also observed degradation of by-products of lipid peroxidation thiobarbituric acid reactive substances (TBARs), nitric oxide (NO), and protein carbonyl levels. This indicates that simvastatin enhances anti-oxidant enzyme activities and can be repurposed for the treatment of oxidative stress in liver diseases in humans after extensive clinical trials., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2022 The Authors. Published by Elsevier B.V.)
- Published
- 2022
- Full Text
- View/download PDF
42. Cellular junction and mesenchymal factors delineate an endometriosis-specific response of endometrial stromal cells to the mesothelium.
- Author
-
Lin LL, Makwana S, Chen M, Wang CM, Gillette LH, Huang TH, Burney RO, Nicholson BJ, and Kirma NB
- Subjects
- Cells, Cultured, Coculture Techniques, Computational Biology, Endometrium metabolism, Endometrium pathology, Epithelial Cells cytology, Epithelial Cells metabolism, Female, Humans, Single-Cell Analysis, Stromal Cells cytology, Stromal Cells metabolism, Biomarkers metabolism, Endometriosis metabolism, Endometrium cytology, Epithelium metabolism, Intercellular Junctions metabolism, Proteomics methods
- Abstract
Endometriosis is a debilitating gynecologic disorder that affects ∼10% of women of reproductive age. Endometriosis is characterized by growth of endometriosis lesions within the abdominal cavity, generally thought to arise from retrograde menstruation of shed endometrial tissue. While the pathophysiology underlying peritoneal endometriosis lesion formation is still unclear, the interaction between invading endometrial tissue and the peritoneal mesothelial lining is an essential step in lesion formation. In this study, we assessed proteomic differences between eutopic endometrial stromal cells (ESCs) from women with and without endometriosis in response to peritoneal mesothelial cell (PMC) exposure, using single-cell cytometry by time-of-flight (CyTOF). Co-cultured primary eutopic ESCs from women with and without endometriosis with an established PMC line were subjected to immunostaining with a panel of Maxpar CyTOF metal-conjugated antibodies (n = 28) targeting cell junction and mesenchymal markers, which are involved in cell-cell adhesions and epithelial-mesenchymal transition. Exposure of the ESCs to PMCs resulted in a drastic shift in cellular expression profiles in ESCs derived from endometriosis, whereas little effect by PMCs was observed in ESCs from non-endometriosis subjects. The transcription factor SNAI1 was consistently repressed by PMC interactions. ESCs from endometriosis patients are unique in that they respond to PMCs by undergoing changes in adhesive properties and mesenchymal characteristics that would facilitate lesion formation., (Copyright © 2021 The Authors. Published by Elsevier B.V. All rights reserved.)
- Published
- 2022
- Full Text
- View/download PDF
43. Comparative Effects of E-Cigarette Aerosol on Periodontium of Periodontitis Patients.
- Author
-
Xu F, Aboseria E, Janal MN, Pushalkar S, Bederoff MV, Vasconcelos R, Sapru S, Paul B, Queiroz E, Makwana S, Solarewicz J, Guo Y, Aguallo D, Gomez C, Shelly D, Aphinyanaphongs Y, Gordon T, Corby PM, Kamer AR, Li X, and Saxena D
- Abstract
Introduction: Tobacco use is one of the main causes of periodontitis. E-cigarette are gaining in popularity, and studies are needed to better understand the impact of e-cigarettes on oral health. Objective: To perform a longitudinal study to evaluate the adverse effects of e-cigarettes on periodontal health. Methods: Naïve E-cigarette users, cigarette smokers, and non-smokers were recruited using newspaper and social media. Age, gender, and ethnicity, were recorded. Participants were scheduled for two visits 6 months apart. At each visit, we collected data on the frequency and magnitude of e-cigarette and cigarette use, and alcohol consumption. Carbon monoxide (CO) levels, cotinine levels, salivary flow rate, periodontal probing depth (PD), bleeding on probing (BoP), and clinical attachment loss (CAL) were also determined at both baseline and follow-up visits and compared between groups with two-way repeated measures ANOVA. Periodontal diagnosis and other categorical variables were compared between groups with the chi-square statistic and logistic regression. Results: We screened 159 subjects and recruited 119 subjects. One-hundred-one subjects (31 cigarette smokers, 32 e-cigarette smokers, and 38 non-smokers) completed every assessment in both visits. The retention and compliance rate of subjects was 84.9%. The use of social media and craigslist was significant in recruiting e-cigarette subjects. Ethnicity and race differed between groups, as did average age in the male subjects. Carbon monoxide and salivary cotinine levels were highest among cigarette smokers. Bleeding on probing and average PDs similarly increased over time in all three groups, but CAL uniquely increased in e-cigarette smokers. Rates of severe periodontal disease were higher in cigarette smokers and e-cigarette users than non-smokers, but interpretation is confounded by the older age of the cigarette smokers. Conclusion: Among the recruited participants, CAL after 6 months was significantly worse only in the e-cigarette smokers. This study design and protocol will assist in future larger studies on e-cigarette and oral health., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2021 Xu, Aboseria, Janal, Pushalkar, Bederoff, Vasconcelos, Sapru, Paul, Queiroz, Makwana, Solarewicz, Guo, Aguallo, Gomez, Shelly, Aphinyanaphongs, Gordon, Corby, Kamer, Li and Saxena.)
- Published
- 2021
- Full Text
- View/download PDF
44. Unique collaboration of modern medicine and traditional faith-healing for the treatment of mental illness: Best practice from Gujarat.
- Author
-
Saha S, Chauhan A, Hamlai M, Saiyad V, Makwana S, Shah K, and Pandya A
- Abstract
Background and Aims: Modern psychiatry brings tremendous value to the treatment of mental illness, however, at times is inadequate in providing holistic care within a patient's broader cultural framework. Traditional healing and modern psychiatry together offer a comprehensive, patient-centred approach to treatment, which encompass a patient's spiritual and religious beliefs. In this context, "Dava-Dua" intervention-combination of psychiatric medicine and faith healing-is implemented by the Government of Gujarat at Mira Data Dargah in Mehsana District. The study assesses intervention outcomes, understand implementation challenges and patients' perspectives on the treatment., Methods: Using a multi-method research approach, case records from July 2008 to March 2018 were retrieved for secondary analysis of patients' profile and outcomes; 26 patients from three groups: Dava, Dua and Dava-Dua; and 6 mental health service providers were interviewed to assess perspectives of patients and service providers on mental health, implementation barriers and facilitators., Results: Despite some implementation challenges, the findings indicate that collaboration of modern psychiatry medicine and faith-based treatment practices certainly benefit patients with otherwise limited access to mental health care thereby protects human rights of patients., Conclusion: Dava-Dua model compliments existing primary healthcare services. It provides an access to modern medicine without compromising patients' religious and spiritual practices. It has the potential to scale-up and replicate where faith-healing is the prime treatment modality to cure mental illness provided implementation challenges are proactively addressed., Competing Interests: There are no conflicts of interest., (Copyright: © 2021 Journal of Family Medicine and Primary Care.)
- Published
- 2021
- Full Text
- View/download PDF
45. Efficacy of external application of oil and gel dosage forms of Aragvadhadi formulation in combination with Rasayana Churna in the management of Shwitra (vitiligo) - An open-labeled comparative clinical trial.
- Author
-
Makwana S, Parekh D, Bedarkar P, and Patgiri B
- Abstract
Introduction: Aragvadhadi Taila (ART) is one of the herbomineral formulations mentioned in Chakradatta indicated in Shwitra (vitiligo). Modification of Taila form into gel form reduces the risk of contamination in view of arsenical contents ( Manahshila , Haratala ) assures precise dose administration at desired site (by avoiding spreading). The gel is a comparatively acceptable dosage form than that of medicated oil., Aim: The aim of the study is to evaluate the comparative efficacy of Aragvadhadi formulation in Taila (ART: Aragvadhadi Taila ) and gel (ARG: Aragvadhadi gel) dosage forms with the internal administration of Rasayana Churna in the management of Shwitra ., Materials and Methods: The study was a randomized open labeled, involving 66 patients of Shwitra that were randomly divided into two groups. Patients registered in group A ( n = 34) were treated with local applications of ART and group B ( n = 32) with ARG for 2 months. Rasayana Churna (3 g), along with the equal quantity of honey and Ghrita was given twice a day after the meal in both groups. Wilcoxon signed-rank test was applied to evaluate the effect of therapy in the individual group for subjective criteria like vitiligo area scoring index score, size and number of patches, Rukshata (dryness), Saparidaha (burning sensation), Bahalatva (thickening), Kandu (itching) while the comparison of results between the groups for the same by applying Coefficient of Variation (CV)., Results: Group B showed better and consistent results in all signs and symptoms except Rukshata, Saparidaha in terms of Coefficient of Variation. In both the groups, statistically highly significant improvement was found in signs and symptoms of Shwitra such as Saparidaha, Kandu , size of patches and number of patches; however, the difference between the groups was statistically insignificant., Conclusion: Both the forms (ART, ARG) of Aragvadhadi formulation along with Rasayana Churna were found as a safe and effective treatment in vitiligo with significant pigment regeneration capacity as topical use for application over 2 months., Competing Interests: There are no conflicts of interest., (Copyright: © 2022 AYU (An International Quarterly Journal of Research in Ayurveda).)
- Published
- 2021
- Full Text
- View/download PDF
46. Comparative pharmacognosy and phytochemical evaluation of leaf, root and stem of Psoralea corylifolia Linn. ( Bakuchi ).
- Author
-
Makwana S, Mehere N, Bedarkar P, Biswajyoti P, and Harisha CR
- Abstract
Background: Psoralea corylifolia Linn. ( P . Corylifolia L.), frequently familiar as Bakuchi in Samskrit, is an endangered and medicinally important plant. Its medicinal usage is reported in Indian pharmaceutical codex, the Chinese, British and the American Pharmacopoeia, and in different traditional systems of medicines such as Ayurveda, Unani and Siddha. However, no scientifically pharmacognosy study has been reported on leaf, root, and stem part of P . Corylifolia L. Classics emphasized the use of leaf, root and stem of P . Corylifolia L. for on the management of dental carries, diarrhea , dysentery, etc., in the form of local application as well as internal administration., Aim: The aim of this study was to evaluate comparative pharmacognosy, phytochemical studies, and physicochemical analysis of leaf, root and stem of P . Corylifolia L., Materials and Methods: Studies of leaf, root, stem, and their powder for phytochemical tests, histochemical tests, psoralen chemical test, and physicochemical analysis were performed by standard methods., Result: All the different parts of the plant exhibit oleoresin and other cellular contents, i.e., vessels fibers, lignified pitted vessels, etc., in pharmacognosy studies. In phytochemical study; observations indicate that coumarins, steroids, and flavonoids are present in leaf, stem, and root samples. Basified alcoholic extracts of powders of all test samples showed yellowish color of fluorescence at 366 nm whereas none of the samples showed any color at 254 nm during chemical test of psoralen., Conclusion: Pharmacognostical study on leaf, root and stem of Bakuchi ( P. corylifolia L.) contributed Certain pharmacognostical parameters i.e; oleoresin, vascular bundles, parenchyma cells with rhomboidal crystals, pericyclic fibres etc parameters that will be applicable for authentication and identification of the parts of drug. There is a need to focus on the preliminary throughput phytochemical screening of plants for their probable use in therapeutics. As no published evidences are developed on comparative pharmacognosy and preliminary physicochemical analysis of leaf, root and stem of P. corylifolia L. plant, the results documented in the present study may be used as a standard in subsequent studies. These observations can be of use for further research studies., Competing Interests: There are no conflicts of interest., (Copyright: © 2022 AYU (An International Quarterly Journal of Research in Ayurveda).)
- Published
- 2020
- Full Text
- View/download PDF
47. Comparative pharmaceutico-analytical study of Rasamanikya prepared by two different Shodhana media of Haratala (orpiment).
- Author
-
Parekh D, Makwana S, Bedarkar P, and Patgiri B
- Abstract
Introduction: Foremost, Rasamanikya is described in Rasendra Chintamani by Acharya Dhundhuknath. It is a formulation that is prepared from the arsenical drug, i.e., orpiment ( Haratala ). Haratala is classified under Uparasa Varga in Rasa classics and is also included under Schedule E1 in D and C act 1940. In classics, there are so many media mentioned for purification process ( Shodhana ) of orpiment. In the present study, Kushmanda Swarasa (juice of Benincasa hispida [Thunb.] Cogn) and Churnodaka (lime water) are adopted as the purification media for orpiment., Aim: The aim of this study was to standardize the pharmaceutical procedure of Rasamanikya and develop a comparative analytical profile of both the formulation, i.e., Rasamanikya prepared by Kushmanda Swarasa and Churnodaka Shodhita Haratala ., Materials and Methods: The study was carried out in two stages as follows: Shodhana of Haratala and preparation of Rasamanikya by Kupipakwa method. Both the samples of Rasamanikya were analyzed for organoleptic and physicochemical parameters. The samples of final products were also analyzed through sophisticated analytical parameters, i.e., X-ray diffraction (XRD), Inductively coupled plasma-atomic emission spectroscopy (ICP-AES), CHNS and O, Field emission gun-scanning electron microscopy (FEG-SEM), Fourier transform infrared spectroscopy (FTIR) and Thermo-gravimetric analysis (TGA)., Results: Average 2 h duration was required for the preparation of Rasamanikya formulation from 600 g of purified orpiment. In XRD analysis, both samples have different diffraction patterns. In ICP-AES analysis, both samples have the same percentage of arsenic. More percentage loss was noted in the TGA of Rasamanikya prepared with Churnodaka Shodhita Haratala than that of Kushmanda Swarasa Shodhita Haratala ., Conclusion: Rasamanikya prepared by two different media of Shodhita Haratala did not found to have a substantial difference in pharmaceutical procedure. However, there was a considerable difference in the analytical study. Kupipakwa procedure can be used for large-scale preparation., Competing Interests: There are no conflicts of interest., (Copyright: © 2022 AYU (An International Quarterly Journal of Research in Ayurveda).)
- Published
- 2020
- Full Text
- View/download PDF
48. Electronic Cigarette Aerosol Modulates the Oral Microbiome and Increases Risk of Infection.
- Author
-
Pushalkar S, Paul B, Li Q, Yang J, Vasconcelos R, Makwana S, González JM, Shah S, Xie C, Janal MN, Queiroz E, Bederoff M, Leinwand J, Solarewicz J, Xu F, Aboseria E, Guo Y, Aguallo D, Gomez C, Kamer A, Shelley D, Aphinyanaphongs Y, Barber C, Gordon T, Corby P, Li X, and Saxena D
- Abstract
The trend of e-cigarette use among teens is ever increasing. Here we show the dysbiotic oral microbial ecology in e-cigarette users influencing the local host immune environment compared with non-smoker controls and cigarette smokers. Using 16S rRNA high-throughput sequencing, we evaluated 119 human participants, 40 in each of the three cohorts, and found significantly altered beta-diversity in e-cigarette users (p = 0.006) when compared with never smokers or tobacco cigarette smokers. The abundance of Porphyromonas and Veillonella (p = 0.008) was higher among vapers. Interleukin (IL)-6 and IL-1β were highly elevated in e-cigarette users when compared with non-users. Epithelial cell-exposed e-cigarette aerosols were more susceptible for infection. In vitro infection model of premalignant Leuk-1 and malignant cell lines exposed to e-cigarette aerosol and challenged by Porphyromonas gingivalis and Fusobacterium nucleatum resulted in elevated inflammatory response. Our findings for the first time demonstrate that e-cigarette users are more prone to infection., Competing Interests: Declaration of Interests The authors declare no competing interests., (Copyright © 2020 The Author(s). Published by Elsevier Inc. All rights reserved.)
- Published
- 2020
- Full Text
- View/download PDF
49. Psychosocial rehabilitation of people living with mental illness: Lessons learned from community-based psychiatric rehabilitation centres in Gujarat.
- Author
-
Saha S, Chauhan A, Buch B, Makwana S, Vikar S, Kotwani P, and Pandya A
- Abstract
Introduction: Psychosocial rehabilitation is the process that facilitates opportunities for persons with chronic mental illness to reach their optimal level of independent functioning in society and for improving their quality of life. However, such psychosocial rehabilitation centers are limited in India., Aims: The present study assesses psychosocial rehabilitation centers (of urban day-care and rural residential rehabilitation center) operated by Ashadeep Charitable Foundation, a civil service organization and its effect on health outcomes of patients living with chronic mental illness., Materials and Methods: Records of 170 cases were retrieved for secondary analysis of demographic information, diagnosis, duration of stay, and health outcomes., Results: Rehabilitation activities included yoga, light physical exercises, group discussion, training for daily living skills, social skills, life skills, vocational training, individual, and family counseling. In addition, extensive outreach activities, mental health camps were also integral part of the rehabilitation activities. Patients who have accessed rehabilitation services were diagnosed with schizophrenia, psychosis, bipolar disorder, depression, and intellectual disability. The average duration of rehabilitation of patients (other than persons with intellectual disability) was ranged from three to four months. Out of those rehabilitated, 69% of them were successfully re-integrated with the family., Conclusion: Combination of pharmacological and psychosocial interventions are effective for re-integrate patients with mental illness to the family. This model of community-based rehabilitation has potential for scale-up., Competing Interests: There are no conflicts of interest., (Copyright: © Journal of Family Medicine and Primary Care.)
- Published
- 2020
- Full Text
- View/download PDF
50. A novel form of glycolytic metabolism-dependent cardioprotection revealed by PKCα and β inhibition.
- Author
-
Brennan S, Chen S, Makwana S, Martin CA, Sims MW, Alonazi ASA, Willets JM, Squire IB, and Rainbow RD
- Subjects
- Animals, Glucose pharmacology, Glycolysis physiology, Guinea Pigs, Hyperglycemia drug therapy, Hyperglycemia metabolism, Male, Myocardial Ischemia drug therapy, Myocardial Ischemia metabolism, Myocardial Reperfusion Injury drug therapy, Myocardial Reperfusion Injury metabolism, Myocardium metabolism, Myocytes, Cardiac drug effects, Myocytes, Cardiac metabolism, Rabbits, Rats, Rats, Wistar, Glycolysis drug effects, Protective Agents pharmacology, Protein Kinase C beta antagonists & inhibitors, Protein Kinase C-alpha antagonists & inhibitors
- Abstract
Key Points: Acute hyperglycaemia at the time of a heart attack worsens the outcome for the patient. Acute hyperglycaemia is not limited to diabetic patients and can be due to a stress response in non-diabetics. This study suggests that the damaging cardiac effects of hyperglycaemia can be reversed by selective PKC inhibition. If PKCα/β isoforms are inhibited, then high glucose itself becomes protective against ischaemic damage. Selective PKC inhibition may therefore be a useful therapeutic tool to limit the damage that can occur during a heart attack by stress-induced hyperglycaemia., Abstract: Hyperglycaemia has a powerful association with adverse prognosis for patients with acute coronary syndromes (ACS). Previous work shows that high glucose prevents ischaemic preconditioning and causes electrical and mechanical disruption via protein kinase C α/β (PKCα/β) activation. The present study aimed to: (i) determine whether the adverse clinical association of hyperglycaemia in ACS can be replicated in preclinical cellular models of ACS and (ii) determine the importance of PKCα/β activation to the deleterious effect of glucose. Freshly isolated rat, guinea pig or rabbit cardiomyocytes were exposed to simulated ischaemia after incubation in the presence of normal (5 mm) or high (20 mm) glucose in the absence or presence of small molecule or tat-peptide-linked PKCαβ inhibitors. In each of the four conditions, the following hallmarks of cardioprotection were recorded using electrophysiology or fluorescence imaging: cardiomyocyte contraction and survival, action potential stability and time to failure, intracellular calcium and ATP, mitochondrial depolarization, ischaemia-sensitive leak current, and time to K
ir 6.2 opening. High glucose alone resulted in decreased cardiomyocyte contraction and survival; however, it also imparted cardioprotection in the presence of PKCα/β inhibitors. This cardioprotective phenotype displayed improvements in all of the measured parameters and decreased myocardium damage during whole heart coronary ligation experiments. High glucose is deleterious to cellular and whole-heart models of simulated ischaemia, in keeping with the clinical association of hyperglycaemia with an adverse outcome in ACS. PKCαβ inhibition revealed high glucose to show a cardioprotective phenotype in this setting. The results of the present study suggest the potential for the therapeutic application of PKCαβ inhibition in ACS associated with hyperglycaemia., (© 2019 The Authors. The Journal of Physiology © 2019 The Physiological Society.)- Published
- 2019
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.