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1.
Chemistry ; 29(71): e202302593, 2023 Dec 19.
Artículo en Inglés | MEDLINE | ID: mdl-37746911

RESUMEN

Development of general and simple designs of catalytic electrodes for the hydrogen evolution reaction (HER) is critical. The present work demonstrates the multiple roles played by a hydrogel polymer in the fabrication and activity enhancement of the nanoelectrocatalyst. A nanocomposite thin film of Pd with the insulating hydrogel, poly(2-hydroxyethyl methacrylate) (PHEMA), is fabricated through a facile in situ process, the polymer itself functioning as the reducing/stabilizing agent in the formation of Pd nanoparticles. Pd-PHEMA on Ni foam enables efficient HER in alkaline medium with a low overpotential; the polymer enables the electrocatalysis by its swelling and confinement of the electrolyte. Most significantly, when the electrode is subjected to an optimized cycling protocol, the overpotential decreases steadily, reaching an impressively low value of 36 mV (@10 mA cm-2 ). A low Tafel slope (68 mV dec-1 ), high exchange current density, Faradaic efficiency and TOF (3.27 mA cm-2 , 99 %, 122.7 h-1 ), and extended stability are achieved. Detailed investigations reveal the active role of the polymer in the evolution of the nanocatalyst, itself undergoing favorable morphological changes. The study illustrates the widened scope for developing efficient and stable catalytic electrodes with hydrogel polymers and unique features that promote the generation of green hydrogen.

2.
Int J Health Plann Manage ; 38(4): 918-935, 2023 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-37071574

RESUMEN

The extant literature on myriad interventional strategies to contain the adverse financial impacts of soaring out-of-pocket expenditures commands systematic auditing and knowledge synthesis. The purpose of this study is to answer these specific questions. What are the interventions present in lower-middle-income countries? How effective are those interventions in reducing the household's out-of-pocket expenditure? Are the studies suffering from any methodological bias? The imprints for this systematic review are obtained from Scopus, PubMed, Web of Science, ProQuest and CINAHL. These manuscripts are identified in full compliance with PRISMA guidelines. The documents identified have undergone quality assessment checks using the 'Effective Public Health Practice Project'. The review identified Interventions that are found to reduce out-of-pocket expenditure are patient educational programs, a combination of financial assistance, healthcare facility quality upgrade measures, and early disease detection strategies. However, these reductions represented marginal changes in the total health expenditure of patients. The role of non-health insurance interventions and the combination of health insurance and non-health insurance measures are highlighted. This review concludes by emphasising the need for further research to fill the knowledge gap by building on the suggestions put forward.


Asunto(s)
Países en Desarrollo , Gastos en Salud , Humanos , Seguro de Salud , Instituciones de Salud , Calidad de la Atención de Salud
3.
Tumour Biol ; 39(3): 1010428317695946, 2017 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-28345463

RESUMEN

Imatinib mesylate, a BCR/ABL fusion protein inhibitor, is the first-line treatment against chronic myelogenous leukemia. In spite of its advantageous viewpoints, imatinib still has genuine impediments like undesirable side effects and tumor resistance during chemotherapy. Nanoparticles with sustainable release profile will help in targeted delivery of anticancer drugs while minimizing deleterious side effects and drug resistance. The use of biopolymers like galactoxyloglucan (PST001) for the fabrication of imatinib mesylate nanoparticles could impart its use in overcoming multidrug resistance in chronic myelogenous leukemia patients with minimal side effects. This study involved in the synthesis of PST-Imatinib nanoconjugates with appreciable drug payload and excellent cytotoxicity against drug-resistant chronic myelogenous leukemia cell line (K562) in comparison with free drug. The use of bioinformatics tool revealed better binding affinity for the drug-polysaccharide complex than the drug alone with three proteins: 3QX3 (Topoisomerase), 1M17 (EGFR tyrosine kinase domain), and 3QRJ (ABL1 kinase domain). Assessment of the biochemical, hematological, and histopathological parameters in mice upheld the security and adequacy of the nanoconjugate compared to free drug. Although perspective investigations are warranted, in a condition like drug resistance in leukemia, this nanoconjugate would display a productive approach in cancer therapeutics.


Asunto(s)
Antineoplásicos/uso terapéutico , Preparaciones de Acción Retardada/uso terapéutico , Glucanos/uso terapéutico , Mesilato de Imatinib/uso terapéutico , Leucemia Mielógena Crónica BCR-ABL Positiva/tratamiento farmacológico , Nanoconjugados/uso terapéutico , Línea Celular Tumoral , ADN-Topoisomerasas/genética , Resistencia a Antineoplásicos/efectos de los fármacos , Receptores ErbB/genética , Humanos , Células K562 , Proteínas Tirosina Quinasas/genética , Proteínas Recombinantes de Fusión/uso terapéutico
4.
Pharm Biol ; 53(3): 437-45, 2015 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-25471295

RESUMEN

CONTEXT: Careya arborea Roxb. (Lecythidaceae) has multiple applications in traditional medicine; it exhibits analgesic, antibacterial, anti-inflammatory, antiulcer, and protective effects. However, the effect of C. arborea on biochemical and immmunological inflammatory mediators has not been explored. OBJECTIVE: The present study investigates the anti-inflammatory potential of the methanol extract of C. arborea stem bark and further assesses its possible mechanism on the modulation of inflammatory biomarkers. MATERIALS AND METHODS: Anti-inflammatory activity of C. arborea methanol extract (CAME) was evaluated (100 and 200 mg/kg, p.o) using indomethacin (10 mg/kg, p.o) as the standard drug in Wistar albino rats. Inflammation was induced by injecting 0.1 ml carrageenan (1% w/v) into the left hind paw. The anti-inflammatory mechanism was studied by measuring malondialdehyde (MDA), C-reactive protein (CRP), nitric oxide (NO), myeloperoxidase (MPO), TNF-α, and IL-1ß levels in both control and treated groups. A protocol has also been established to quantify quercetin and betulinic acid content in CAME using HPTLC fingerprint. RESULTS: Careya arborea significantly (p < 0.001) decreased carrageenan-induced paw edema, showed a reduction of 48.87 and 65.53% at doses of 100 and 200 mg/kg, respectively. Moreover, CAME significantly decreased the MDA, CRP, NO, and MPO levels, elevated by carrageenan induced inflammation. CAME also markedly down-regulated serum TNF-α and IL-1ß levels. These findings were further supported by the histological study. The content of quercetin and betulinic acid in CAME was found to be 0.177 and 3.14%, respectively. CONCLUSION: Several mechanisms, including the inhibition of pro-inflammatory cytokines, enzymes and mediators release, appear to account for the anti-inflammatory potential of C. arborea.


Asunto(s)
Antiinflamatorios/uso terapéutico , Carragenina/toxicidad , Edema/sangre , Mediadores de Inflamación/sangre , Lecythidaceae , Extractos Vegetales/uso terapéutico , Animales , Antiinflamatorios/aislamiento & purificación , Antiinflamatorios/farmacología , Biomarcadores/sangre , Edema/inducido químicamente , Edema/tratamiento farmacológico , Inflamación/sangre , Inflamación/inducido químicamente , Inflamación/tratamiento farmacológico , Mediadores de Inflamación/antagonistas & inhibidores , Masculino , Corteza de la Planta , Extractos Vegetales/aislamiento & purificación , Extractos Vegetales/farmacología , Ratas , Ratas Wistar , Resultado del Tratamiento
5.
Bioorg Med Chem Lett ; 24(14): 3034-42, 2014 Jul 15.
Artículo en Inglés | MEDLINE | ID: mdl-24890090

RESUMEN

A library of conjugates of chromones and 2,4-thiazolidinedione has been synthesized by Knoevenagel condensation followed by reduction using hydrogen gas and Pd/C as a catalyst. Compounds 5c and 5e were most effective in lowering the blood glucose level comparable to standard drug pioglitazone. Compound 5e exhibited potent PPAR-γ transactivation of 48.72% in comparison to pioglitazone (62.48%). All the molecules showed good glide score against the PPAR-γ target in molecular docking study. PPAR-γ gene expression was significantly increased by compound 5e (2.56-fold) in comparison to standard drug pioglitazone. Compounds 5e and 5c did not cause any damage to the liver and may be considered as promising candidates for the development of new antidiabetic agents.


Asunto(s)
Diabetes Mellitus Experimental/tratamiento farmacológico , Hipoglucemiantes/farmacología , Hígado/efectos de los fármacos , Simulación del Acoplamiento Molecular , PPAR gamma/agonistas , PPAR gamma/genética , Tiazolidinedionas/farmacología , Animales , Glucemia/efectos de los fármacos , Diabetes Mellitus Experimental/inducido químicamente , Modelos Animales de Enfermedad , Regulación de la Expresión Génica/efectos de los fármacos , Prueba de Tolerancia a la Glucosa , Humanos , Hipoglucemiantes/administración & dosificación , Hipoglucemiantes/efectos adversos , Hipoglucemiantes/síntesis química , Hígado/patología , Estructura Molecular , Ratas , Ratas Wistar , Medición de Riesgo , Estreptozocina , Tiazolidinedionas/administración & dosificación , Tiazolidinedionas/efectos adversos , Tiazolidinedionas/síntesis química
6.
J Educ Health Promot ; 13: 174, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39268442

RESUMEN

BACKGROUND: Eliminating financial barriers and improving healthcare accessibility pertain to be key elements of the United Nation's sustainable development goals. These have directed health policymakers to advocate private health insurance as a health promotion strategy to enable patients to obtain absolute and affordable medical care when needed. Against this backdrop, the current study investigates the coverage trend and financial risk-protective nature of private health insurance plans. MATERIALS AND METHOD: We examined 12 months' hospital billing data of private health insurance holders with cancer, cardiac, neurological, and renal diseases. The billing and insurance claim data of 5002 patients were extracted from the billing section of a tertiary care teaching hospital located in southern India from April 2022 through March 2023. Five per cent of patients from each disease condition were selected through proportionate random sampling for analysis (n = 250). The cost incurred and reimbursement trend under various cost heads were investigated by examining the cost incurred by the patient during the hospitalization and comparing it with the amount reimbursed by the insurance company. RESULTS: The scrutiny exhibits that private health insurance fails to provide comprehensive coverage, resulting in under-insurance among subscribers. Reimbursement received for each cost category is also discussed. To the best of our knowledge, this is the first study that has used institutional data instead of large survey data or patient data. CONCLUSION: The research concludes by soliciting policymakers, healthcare providers, and insurers to develop strategies to enhance the affordability and accessibility of healthcare to promote health and wellness.

7.
Health Econ Policy Law ; 19(2): 234-252, 2024 04.
Artículo en Inglés | MEDLINE | ID: mdl-38314528

RESUMEN

The management implications of pricing healthcare services, especially hospitals, have received insufficient scholarly attention. Additionally, disciplinary overlaps have led to scattered academic efforts in this domain. This study performs a thematic synthesis of the literature and applies retrospective analysis to hospital service pricing articles to address these issues. The study's inputs were sourced from well-known online repositories, using a structured search string and PRISMA flow chart to select the pertinent documents. Our thematic analysis of pricing literature encompasses: (a) comprehension of hospital service pricing nature; (b) pricing objectives, strategies and practices differentiation; (c) presentation of factors impacting hospital service pricing. We observe that hospital pricing is an intricate and unclear matter. The terms 'pricing strategies' and 'pricing practices' are often used interchangeably in academic literature. Hospital service pricing is influenced by costs, demand and supply factors, market structure, pricing regulation and third-party reimbursements. The study's findings provide policy implications for service pricing in hospitals, in addition to suggesting avenues for future research on hospital pricing.


Asunto(s)
Costos y Análisis de Costo , Humanos , Costos de Hospital , Hospitales , Precios de Hospital , Economía Hospitalaria
8.
Analyst ; 138(21): 6296-300, 2013 Nov 07.
Artículo en Inglés | MEDLINE | ID: mdl-23998181

RESUMEN

Unusual electropolymerization of aniline to polyaniline (PANI) in a neutral pH solution has been successfully demonstrated using a multiwalled carbon nanotube (MWCNT) modified gold electrode (Au-MWCNT@PANIpH7). The modified electrode showed highly redox active surface confined peaks corresponding to the molecular transitions of leucoemeraldine-emeraldine and emeraldine-pernigraniline in pH 7 phosphate buffered solution (PBS), along with a low capacitance behavior, in contrast to the conventional acidic solution PANI systems. Control experiments in the absence of MWCNTs (i.e., Au/PANIpH7) and in an acidic medium, pH 2 (i.e., Au-MWCNT@PANIpH2), resulted in nil and poor redox features respectively. The physicochemical characterization of the MWCNT@PANIpH7 film by TEM, Raman spectroscopy, FTIR and UV-Vis revealed the presence of polaron type PANI structures on the MWCNT surface. More interestingly, MWCNT@PANIpH7 showed a highly selective electrocatalytic signal to ascorbic acid (AA) at a low oxidation potential, -15 mV vs. Ag/AgCl, without interference from nitrite, uric acid, dopamine, glucose, cysteine and citric acid in pH 7 PBS. Extended flow injection analysis yielded an excellent AA sensing response with a detection limit (signal-to-noise ratio = 3) of 42 nM, which is better than that of the conventional acid assisted MWCNT@PANIpH2 and MWCNT systems.


Asunto(s)
Compuestos de Anilina/química , Técnicas Electroquímicas/métodos , Nanotubos de Carbono/química , Polimerizacion , Electrodos , Concentración de Iones de Hidrógeno
9.
Opt Lett ; 37(20): 4194-6, 2012 Oct 15.
Artículo en Inglés | MEDLINE | ID: mdl-23073408

RESUMEN

Vertical silicon nanowire arrays were fabricated leading to an enhanced photoluminescence (PL) emission and second-order nonlinear optical response. PL from the nanowires was increased by a factor of 50 as compared to bulk silicon. The second order nonlinearity was demonstrated in second-harmonic generation and rotational anisotropic measurements. Enhancement by at least a factor of 80 was achieved as compared to bulk silicon for the p-polarized input and s-polarized output. These enhancements in the silicon characteristics should enable highly desired applications using a silicon platform, such as nonlinear and active devices.

10.
Indian J Exp Biol ; 50(3): 216-22, 2012 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-22439437

RESUMEN

The prevalence of obesity has been rising alarmingly and it has now become a global concern causing an enormous economic burden on the health care system. Obesity is generally linked to complications in lipid metabolism and oxidative stress. The aim of the present study was to investigate the effect of rosuvastatin (10 mg/kg, po) on obesity-induced oxidative stress in high fat-fed Wistar rats. Oral administration of rosuvastatin (10 mg/kg) for 21 days along with high fat diet brought about significant elevation in serum high density lipoprotein and cardiac antioxidant enzymes levels (superoxide dismutase, catalase, glutathione, glutathione peroxidase, glutathione peroxidase-, glutathione reductase- and glutathione-S-transferase) while decreasing in serum lactate dehydrogenase, apolipoprotein-B, lipids (triglycerides, total cholesterol, low density lipoprotein-cholesterol, very low density lipoprotein-cholesterol and atherogenic index) and cardiac thiobarbituric acid reactive substances levels. The results were comparable with orlistat, a standard antiobesity drug. These preliminary results for the first time demonstrate that administration of rosuvastatin can be beneficial for the suppression of obesity-induced oxidative stress and dyslipidemia in high fat-fed Wistar rats.


Asunto(s)
Fluorobencenos/farmacología , Corazón/fisiopatología , Inhibidores de Hidroximetilglutaril-CoA Reductasas/farmacología , Obesidad/complicaciones , Estrés Oxidativo/efectos de los fármacos , Pirimidinas/farmacología , Sulfonamidas/farmacología , Animales , Antioxidantes/metabolismo , Dieta Alta en Grasa , Femenino , Humanos , Miocardio/metabolismo , Obesidad/fisiopatología , Distribución Aleatoria , Ratas , Ratas Wistar , Rosuvastatina Cálcica
11.
Toxicol Mech Methods ; 22(1): 67-73, 2012 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-21859367

RESUMEN

CONTEXT: There has been a steady increase in the epidemiology of obesity over the last 30 years with developed countries leading the way. Oxidative stress was believed to be the principle contributor to the development of cardiovascular disorders that linked with obesity. OBJECTIVE: To evaluate the enhancement of antioxidant defense mechanism by Pitavastatin (PTV) and Rosuvastatin (RSV) on obesity-induced oxidative stress in Wistar rats. METHODS: Fifty Wistar albino rats were divided into five groups. High fat diet (HFD, 20 g/day/rat) pellets were given for 28 days to produce obesity-induced oxidative stress in Wistar rats. Oral administration of HFD along with PTV, RSV and Orlistat [(HFD for 28 days + from 8th day PTV (1 mg/kg), RSV (5 mg/kg) and Orlistat (10 mg/kg) to 28th day] were given respectively. RESULTS: Both PTV and RSV produced significant (p < 0.01) reduction in serum apolipoprotein-B (Apo-B), total cholesterol (TC), triglycerides (TGs), cardiac-lipid peroxides (TBARS) levels and elevation in serum high density lipoprotein (HDL-C), cardiac antioxidant enzymes [glutathione (GSH), glutathione peroxidase (GPx), glutathione reductase (GR), glutathione-S-transferase (GST), superoxide dismutase (SOD) and catase (CAT)] levels. DISCUSSION AND CONCLUSION: Results were comparable with Orlistat, a standard antiobesity drug and present initial evidence that Pitavastatin and Rosuvastatin are useful for the treatment of obesity by enhancing the antioxidant defense mechanism. However, the effects of PTV were more prominent than RSV. The present findings of Pitavastatin and Rosuvastatin raise the possibility of a new application as an antiobesity therapeutic modality.


Asunto(s)
Antioxidantes/metabolismo , Fluorobencenos/uso terapéutico , Inhibidores de Hidroximetilglutaril-CoA Reductasas/uso terapéutico , Obesidad/tratamiento farmacológico , Estrés Oxidativo/efectos de los fármacos , Pirimidinas/uso terapéutico , Quinolinas/uso terapéutico , Sulfonamidas/uso terapéutico , Administración Oral , Animales , Fármacos Antiobesidad/administración & dosificación , Fármacos Antiobesidad/uso terapéutico , Apolipoproteínas B/sangre , HDL-Colesterol/sangre , Modelos Animales de Enfermedad , Fluorobencenos/administración & dosificación , Inhibidores de Hidroximetilglutaril-CoA Reductasas/administración & dosificación , Lactonas/administración & dosificación , Lactonas/uso terapéutico , Peróxidos Lipídicos/metabolismo , Miocardio/enzimología , Miocardio/metabolismo , Obesidad/enzimología , Obesidad/metabolismo , Orlistat , Pirimidinas/administración & dosificación , Quinolinas/administración & dosificación , Ratas , Ratas Wistar , Rosuvastatina Cálcica , Sulfonamidas/administración & dosificación , Resultado del Tratamiento , Triglicéridos/sangre
12.
Zoo Biol ; 31(2): 219-28, 2012.
Artículo en Inglés | MEDLINE | ID: mdl-21480370

RESUMEN

Logistic regression was applied to develop a morphometric sexing method of two closely related stork species that were previously sexed through amplification of the CHD gene. Tarsus length (TL) and bill length (BL) measurements were recorded from captive populations of adult Milky Stork (Mycteria cinerea) (n = 60) and Painted Stork (Mycteria leucocephala) (n = 58) at Zoo Negara Malaysia. Despite having monomorphic plumages, both stork species exhibited normal sexual size dimorphism in which males were significantly larger than females in the tested variables. Based on logistic regression analysis, BL correctly classified the sex of sampled individuals from Painted and Milky stork with an overall predicted accuracy of 94.8 and 90.0%, respectively. However, TL measurements generated a lower predicted accuracy level of 86.2% and a same accuracy level of 90% on the sex classification of individuals from Painted and Milky stork, respectively. By comparing the measurements of both species, only the average BL measurements of the Milky storks were significantly lower than that of Painted storks (t-test, P80.001). The logistic regression equation in this study may serve as a simple and more practical option for sexing Milky and Painted storks for their breeding and conservation programmes.


Asunto(s)
Animales de Zoológico , Aves/anatomía & histología , Análisis para Determinación del Sexo/métodos , Análisis para Determinación del Sexo/veterinaria , Animales , Tobillo/anatomía & histología , Pico/anatomía & histología , Pesos y Medidas Corporales , Femenino , Modelos Logísticos , Malasia , Masculino , Especificidad de la Especie
13.
J Biomater Sci Polym Ed ; 33(7): 858-877, 2022 05.
Artículo en Inglés | MEDLINE | ID: mdl-34963053

RESUMEN

Irrespective of the labyrinth of fastidiously woven artificial scaffolds, the lack of biocompatibility hampers effective clinical translation, which is the definitive purpose of any biomedical system or device. Hence, the current exploration deals with the fabrication of scaffolds with enhanced bioactivities for wound healing. The methodology used for the fabrication of the scaffolds was electrospinning of the polysaccharide, which is isolated from tamarind seed kernel using the electrospinning process. To improve the antimicrobial activity of the scaffolds, in-house synthesized silver nanoparticles were added to the scaffolds. Wound healing and antimicrobial efficiency of the scaffolds were established in murine models. An insight into the wound healing mechanism was also analyzed using differentiation screening of stem cells grown on scaffolds. The results showed that newly synthesized scaffolds presented excellent wound healing ability along with antimicrobial activity. Furthermore, detailed toxicological evaluations through the histopathology and collagen staining wound sections, the probability of any off-target effects were also ruled out. Differentiation screening showed that adipogenesis was more prominent in cells attached to the scaffolds and markers of adipogenesis were strongly expressed in fluorescent microscopy. Thus we hope that the scaffolds mediate stem cell differentiation in wounds and promote a progressive healing response. Results thus obtained were encouraging and further studies need to embark on to establish the combined role in all aspects studied here.


Asunto(s)
Antiinfecciosos , Nanopartículas del Metal , Nanofibras , Animales , Diferenciación Celular , Ratones , Polisacáridos/farmacología , Plata , Andamios del Tejido , Cicatrización de Heridas
14.
Langmuir ; 27(3): 1131-5, 2011 Feb 01.
Artículo en Inglés | MEDLINE | ID: mdl-21210646

RESUMEN

A layer growth mechanism of Pt-Ru bimetallic nanoparticles has been proposed with supporting experiments and calculations by density functional theory (DFT). Elongated Pt atoms on Ru nanoparticles were synthesized via a two-step route, and their structural details were obtained by high-resolution transmission electron microscopy. Because of the intrinsic mismatch of lattice spacing between the two elements, such an unusual growth was analyzed with the DFT simulations to explore the mystery of the growth mechanism. Pt atoms would rearrange the packing order and adjust the Pt-Pt atomic distance, and so do the Ru nanoparticles in order to achieve the optimal energy status of the bimetallic system. The resultant Pt(111) layers could stack on top of the Ru(0001) core more tightly by fitting the pockets left between the Ru atoms. The findings give insight into the formation mechanism of the nanosized Pt-Ru bimetallic catalyst and pave the way for designing bimetallic catalysts with tailored properties at the atomic level.

15.
Int J Clin Pharmacol Ther ; 49(7): 444-50, 2011 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-21726495

RESUMEN

AIMS: To find out the pharmacokinetic (PK) and pharmacodynamic (PD) parameters for assessing the bioequivalence of three marketed products. To study the relationship between the pharmacokinetics of gliclazide and pharmacodynamic effect in healthy male volunteers. METHODS: This was an open label, balanced, randomized, 3-treatment, 3-sequence, 3 period, single-dose, cross-over bioavailability study in which 18 healthy adults were randomized to receive gliclazide 80 mg with 7 days wash out between treatments. The drug was administered with 240 ml of 20% glucose solution after a 10 h overnight fasting. Pharmacokinetic parameters like t(max), C(max), AUC(0-t), AUC(0-∞), AUC(0-t) / AUC(0-∞) and t(1/2) and pharmacodynamic parameters like maximum effect (minimum glucose level in the body, C(minglu)), time to minimum glucose level in the body (T(cminglu)) and partial AUC were calculated for all the products. RESULTS: The values for mean ± SD for age, height and weight of the volunteers were 28.00 ± 22.68, 165.78 ± 5.56 and 56.78 ± 13.37 respectively. There were total 4 withdrawn subjects and 1 drop out. Within batch accuracy of the method were in the range of 95.5 - 101.7%, 99.1 - 106.1% and 96.2 - 104.2% for three consecutive batches. The 90% CI for log transformed data of the PK and PD were within the acceptance range of 80.0 - 125.0%. CONCLUSIONS: This population PKPD analysis has characterized the relationship between the exposure to gliclazide and its hypoglycemic effect. The test products A & B compared to reference product R were bioequivalent on the basis of pharmacokinetic and pharmacodynamic parameters. Finally it is recommended that the more costly product R can be safely switched with less costly products i.e. A and B.


Asunto(s)
Gliclazida/farmacocinética , Hipoglucemiantes/farmacocinética , Adulto , Área Bajo la Curva , Glucemia/metabolismo , Química Farmacéutica , Cromatografía Líquida de Alta Presión , Gliclazida/administración & dosificación , Gliclazida/efectos adversos , Humanos , Hipoglucemiantes/administración & dosificación , Hipoglucemiantes/efectos adversos , Masculino , Espectrometría de Masas , Control de Calidad , Reproducibilidad de los Resultados , Equivalencia Terapéutica
16.
Indian J Exp Biol ; 49(4): 260-8, 2011 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-21614889

RESUMEN

Administration of a single dose of doxorubicin (DOX) (7.5 mg/kg, i.v.) produces cardiotoxicity, manifested biochemically by significant decrease in blood glutathione (GSH) and tissue GSH along with elevated levels of serum lactate dehydrogenase (LDH) and serum creatine phosphokinase (CPK). In addition, cardiotoxicity was further confirmed by significant increase in lipid peroxides expressed as malondialdehyde (MDA, secondary indicator of lipid peroxidation), tissue catalase and tissue superoxide dismutase (SOD). Administration ofA. vera gel (100 and 200 mg/kg) orally for 10 days produced a significant protection against cardiotoxicity induced by DOX evidenced by significant reductions in serum LDH, serum CPK, cardiac lipid peroxides, tissue catalase and tissue SOD along with increased levels of blood and tissue GSH. The results revealed that A. vera gel produced a dose dependent protection against DOX induced cardiotoxiaty.


Asunto(s)
Aloe , Cardiotónicos/administración & dosificación , Doxorrubicina/antagonistas & inhibidores , Corazón/efectos de los fármacos , Administración Oral , Animales , Calcio/metabolismo , Doxorrubicina/toxicidad , Femenino , Geles , Masculino , Miocardio/metabolismo , Miocardio/patología , Estrés Oxidativo/efectos de los fármacos , Fitoterapia , Extractos Vegetales/administración & dosificación , Plantas Medicinales , Ratas
17.
J Environ Biol ; 32(1): 11-6, 2011 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-21888225

RESUMEN

In the present study, an attempt was made to compare the statistical tools used for analysing the data of repeated dose toxicity studies with rodents conducted in 45 countries, with that of Japan. The study revealed that there was no congruence among the countries in the use of statistical tools for analysing the data obtained from the above studies. For example, to analyse the data obtained from repeated dose toxicity studies with rodents, Scheffé's multiple range and Dunnett type (joint type Dunnett) tests are commonly used in Japan, but in other countries use of these statistical tools is not so common. However, statistical techniques used for testing the above data for homogeneity of variance and inter-group comparisons do not differ much between Japan and other countries. In Japan, the data are generally not tested for normality and the same is true with the most of the countries investigated. In the present investigation, out of 127 studies examined, data of only 6 studies were analysed for both homogeneity of variance and normal distribution. For examining homogeneity of variance, we propose Levene's test, since the commonly used Bartlett's test may show heterogeneity in variance in all the groups, if a slight heterogeneity in variance is seen any one of the groups. We suggest the data may be examined for both homogeneity of variance and normal distribution. For the data of the groups that do not show heterogeneity of variance, to find the significant difference among the groups, we recommend Dunnett's test, and for those show heterogeneity of variance, we recommend Steel's test.


Asunto(s)
Interpretación Estadística de Datos , Roedores , Pruebas de Toxicidad , Animales , Análisis por Conglomerados , Países Desarrollados , Japón , Ratas
18.
Eur J Surg Oncol ; 47(1): 115-122, 2021 01.
Artículo en Inglés | MEDLINE | ID: mdl-31679953

RESUMEN

BACKGROUND: Bromelain (Brom) and Acetylcysteine (Ac) have synergistic activity resulting in dissolution of tumour-produced mucin both in vitro and in vivo. The aim of this study was to determine whether treatment of mucinous peritoneal tumour with BromAc can be performed with an acceptable safety profile and to conduct a preliminary assessment of efficacy in a clinical setting. METHODS: Under radiological guidance, a drain was inserted into the tumour mass or intraperitoneally. Each patient could have more than one tumour site treated. Brom 20-60 mg and Ac 1·5-2 g was administered in 5% glucose. At 24 h, the patient was assessed for symptoms including treatment-related adverse events (AEs) and the drain was aspirated. The volume of tumour removed was measured. A repeat dose via the drain was given in most patients. All patients that received at least one dose of BromAc were included in the safety and response analysis. FINDINGS: Between March 2018 and July 2019, 20 patients with mucinous tumours were treated with BromAc. Seventeen (85%) of patients had at least one treatment-emergent AE. The most frequent treatment-related AEs were CRP rise (n = 16, 80%), WCC rise (n = 11, 55%), fever (n = 7, 35%, grade I) and pain (n = 6, 30%, grade II/III). Serious treatment-related AEs accounted for 12·5% of all AEs. There were no anaphylactic reactions. There were no deaths due to treatment-related AEs. An objective response to treatment was seen in 73·2% of treated sites. CONCLUSION: Based on these preliminary results and our preclinical data, injection of BromAc into mucinous tumours had a manageable safety profile. Considerable mucolytic activity was seen by volume of mucin extracted and radiological appearance. These results support further investigation of BromAC for patients with inoperable mucinous tumours and may provide a new and minimally invasive treatment for these patients.


Asunto(s)
Acetilcisteína/uso terapéutico , Adenocarcinoma Mucinoso/tratamiento farmacológico , Bromelaínas/uso terapéutico , Neoplasias Peritoneales/tratamiento farmacológico , Acetilcisteína/administración & dosificación , Adenocarcinoma Mucinoso/secundario , Adulto , Anciano , Bromelaínas/administración & dosificación , Quimioterapia Combinada , Femenino , Humanos , Infusiones Parenterales , Inyecciones Intralesiones , Masculino , Persona de Mediana Edad , Clasificación del Tumor , Neoplasias Peritoneales/secundario , Radiografía Intervencional
19.
J Clin Pharm Ther ; 35(3): 267-77, 2010 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-20831529

RESUMEN

BACKGROUND: India has witnessed a rapidly exploding epidemic of diabetes in recent years and currently leads the world with the largest number of diabetic subjects in a single country. World Health Organization estimates that in 2000, 31.7 million individuals were affected by diabetes in India and these numbers will rise to 79.4 millions by the year 2030. In view of the above situation, drug utilization review of antidiabetic medicines in Indian healthcare settings has a valid significance to promote rational drug use in diabetics. OBJECTIVE: The present study is aimed to determine the drug utilization patterns in type 2 diabetic patients on oral hypoglycemic agents in the Medicine Outpatient Department (OPD) and Inpatient Department (IPD) of Majeedia Hospital, a teaching hospital of Hamdard University, New Delhi. METHODS: Patients with established type 2 diabetes (n = 218) visiting the OPD and IPD were interviewed using a structured questionnaire during the period January-May 2006. RESULTS: A majority of the type 2 diabetic patients in this setting were treated with multiple antidiabetic drug therapy. The most commonly prescribed antidiabetic drug class was biguanides (metformin) followed by sulphonylureas (glimepiride), thiazolidinediones (pioglitazone), insulin and alpha-glucosidase inhibitors (miglitol). As monotherapy insulin was the most common choice followed by metformin. The most prevalent multiple therapy was a three-drug combination of glimepiride + metformin + pioglitazone. More than half of the type 2 diabetic patients showed poor adherence (compliance) to the prescribed therapy. CONCLUSION: This study strongly highlights the need for patient education or counselling on use of antidiabetic and concomitant drugs, monitoring of blood glucose and glycosylated haemoglobin (HbA1c) levels, diet control, and correction of diabetic complications. Metabolic control was poor and HbA1c monitoring was underutilized. Clinical monitoring of patients' adherence to prescribed treatments is recommended and measures should be taken to improve it.


Asunto(s)
Diabetes Mellitus Tipo 2/tratamiento farmacológico , Hipoglucemiantes/uso terapéutico , Cumplimiento de la Medicación , Administración Oral , Adulto , Glucemia/efectos de los fármacos , Femenino , Hemoglobina Glucada/metabolismo , Hospitales Universitarios , Humanos , India , Masculino , Persona de Mediana Edad , Pautas de la Práctica en Medicina/estadística & datos numéricos , Encuestas y Cuestionarios
20.
Water Sci Technol ; 61(8): 2151-60, 2010.
Artículo en Inglés | MEDLINE | ID: mdl-20389015

RESUMEN

Chlorine dioxide is a well known powerful disinfectant. Although there are several chemical and electrochemical methods developed for on-line chlorine dioxide generation, the details are mostly confined as patents. We studied in this work the electrochemical generation of dissolved chlorine dioxide from an un-buffered solution of sodium chlorite and sodium chloride mixture in an un-divided electrochemical cell set-up with RuO(2)-coated-Ti anode and Pt-coated-Ti cathode under constant current mode. Various process parameters including feed flow rate (10 to 150 ml/min), feed solution pH (2.3 to 9.4), concentration of sodium chloride (0 to 170 mM), concentration of sodium chlorite (0 to 7.7 mM), and the applied current (100 to 1,200 mA) were optimized. Experiments were conducted by performing single pass experiments, with no circulation. The current efficiency and the power consumption were calculated for the optimized conditions, and compared with IrO(2) electrode of our previous investigation.


Asunto(s)
Compuestos de Cloro/síntesis química , Óxidos/síntesis química , Rubidio/química , Cloruros/química , Desinfectantes/síntesis química , Técnicas Electroquímicas , Electrodos , Concentración de Iones de Hidrógeno , Iridio/química , Cloruro de Sodio/química
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