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1.
Curr Rheumatol Rep ; 26(7): 260-268, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38575845

RESUMEN

PURPOSE OF REVIEW: Hyperlipidemia is the major cardiovascular morbidity and mortality risk factor. Statins are the first-line treatment for hyperlipidemia. Statin-associated muscle symptoms (SAMS) are the main reason for the discontinuation of statins among patients. The purpose of this review is to guide clinicians to recognize the difference between self-limited and autoimmune statin myopathy in addition to the factors that potentiate them. Finally, treatment strategies will be discussed. This review mostly focuses on new data in the past 3 years. RECENT FINDINGS: Recent findings suggest that SAMS is a complex and multifactorial condition that involves mitochondrial dysfunction, oxidative stress, and immune-mediated mechanisms. Effective management of SAMS requires a thorough evaluation of the patient's symptoms, risk factors, and medication history, as well as consideration of alternative treatment options. While statins are effective in reducing the risk of cardiovascular events, their use is associated with a range of adverse effects, including SAMS.


Asunto(s)
Inhibidores de Hidroximetilglutaril-CoA Reductasas , Enfermedades Musculares , Humanos , Inhibidores de Hidroximetilglutaril-CoA Reductasas/efectos adversos , Inhibidores de Hidroximetilglutaril-CoA Reductasas/uso terapéutico , Enfermedades Musculares/inducido químicamente , Factores de Riesgo , Hiperlipidemias/tratamiento farmacológico
2.
Pak J Med Sci ; 38(3Part-I): 577-582, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35480546

RESUMEN

Background and Objective: Globally iodine deficiency disorder (IDD) is a major preventable cause of cognitive impairment in new born. In developing countries, every year 38 million newborn develop cognitive impairment as a result of iodine deficiency. Iodine consumption by pregnant women is affected by many factors. Hence, we conducted this study to identify factors associated with IDD. To know the effects of different factors on use of iodized salt by pregnant women visiting antenatal outpatient department (OPD) at a public sector tertiary care hospital of Karachi. Methods: Pregnant women (n=360) visiting antenatal OPD at public sector tertiary care hospital of Karachi were interviewed using a structured questionnaire. Systematic random sampling method was employed. Data was collected from March 2017 to January 2018. Chi-square test was applied to identify factors associated with IDD. Results: Thirty one (31% ) of pregnant women were consuming iodized salt in their homes. The percentage of participants who heard about iodized salt for the first time was 24%. Twelve percent (12%) reported that price of iodized salt is more than that of normal salt. Ninety eight (98%) of pregnant women replied that they were not informed about the importance of iodine or iodine requirement during pregnancy by their doctor or health care provider. A statistically significant association was observed between educational status (p=0.001) and household income (p<0.001) with the use of iodized salt. Conclusion: Low education, low income of study participants are identified as factors related to limited consumption and incorrect practices related to the use of iodized salt. In order to address iodine deficiency, there is a need to not only sensitize the expectant mothers about the adverse outcome of maternal iodine deficiency for their unborn child but also to introduce an awareness program at the antenatal clinics by the Health Professional for the antenatal care seeking women. There is also an immense need of support from Government side as well to make strategies and policy changes at the national level to ensure the availability, accessibility and affordability of iodized salt.

3.
Planta ; 253(1): 22, 2021 Jan 05.
Artículo en Inglés | MEDLINE | ID: mdl-33399998

RESUMEN

MAIN CONCLUSION: A physical map of Thinopyrum intermedium chromosome 7J was constructed using translocation mapping, and a new seedling purple coleoptile gene was mapped to the bin of FL 0.35-0.63 of 7JS. Thinopyrum intermedium (2n = 6x = 42, JJJsJsStSt), a wild relative of common wheat, harbors numerous beneficial genes for wheat improvement. Previous studies showed that wheat-Th. intermedium partial amphiploid TAF46 and its derived addition line L1 had a purple coleoptile, which was derived from Th. intermedium chromosome 7J. To identify and physically map the purple coleoptile gene, 12 wheat-Th. intermedium 7J translocation lines were analyzed by sequential multicolor fluorescence in situ hybridization (mc-FISH), PCR-based landmark unique gene (PLUG) and intron targeting (IT) markers. A physical map of the 7J chromosome was constructed, consisting of eight chromosomal bins with 89 markers. Seedling evaluation of the coleoptile colors of all tested materials indicated that the purple coleoptile gene was located to the bin with a fraction length (FL) of 0.35-0.63 on chromosome 7JS. Furthermore, based on the syntenic relationships between Th. intermedium and wheat chromosomes, we developed a new chromosome 7J-specific EST-PCR marker from the chromosomal region corresponding to the purple coleoptile gene through the Triticeae multi-omics database. The approach of designing chromosome-specific markers has facilitated fine mapping of the Thinopyrum-specific purple coleoptile gene, and these translocation lines will be valuable for studying the function of the purple coleoptile gene in anthocyanin biosynthesis.


Asunto(s)
Cromosomas de las Plantas , Genes de Plantas , Poaceae , Triticum , Antocianinas/genética , Mapeo Cromosómico , Cromosomas de las Plantas/genética , Cotiledón/genética , Genes de Plantas/genética , Hibridación Fluorescente in Situ , Poaceae/genética , Triticum/genética
4.
J Pak Med Assoc ; 71(3): 993-996, 2021 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-34057960

RESUMEN

A cross-sectional survey was conducted from February 2016 to September 2016 to assess the knowledge, attitude and practices regarding contraceptive implants among women of childbearing age visiting the Reproductive Health Services Centre, Civil Hospital, Karachi. A total of 396 adult, non-pregnant, married women of childbearing age, between 18 and 49 years, were interviewed using a structured questionnaire. Only 153 (38.6%) of the respondents had any knowledge about implants, out of whom 122 (79.7%) had acquired the information from family planning clinics. Almost two thirds of the respondents, 267(67.4%) were in favour of using implants as a contraceptive method. Moreover, 244 (61.6%) respondents were of the opinion that if given a choice, they will use implanon, though out of the 316 (79.8%) respondents who had ever used contraceptives, only 3 (0.9%) used implants. Despite a favourable attitude, limited knowledge and poor practices of the respondents were the highlights of the study findings.


Asunto(s)
Anticonceptivos , Conocimientos, Actitudes y Práctica en Salud , Adolescente , Adulto , Anticoncepción , Conducta Anticonceptiva , Estudios Transversales , Femenino , Humanos , Persona de Mediana Edad , Adulto Joven
5.
Pak J Med Sci ; 37(1): 146-150, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33437267

RESUMEN

OBJECTIVES: To assess learning styles and the association of various teaching methodologies of medical students. METHODS: A cross-sectional study was carried out amongst 523 medical students of Baqai Medical College, Baqai Medical University, Karachi, from July 2019 to October 2019. All students from first to final year, who attended the undergraduate MBBS program were included. The study instrument was a questionnaire containing students' demographic details, David Kolb's Learning Style Inventory 4.0 and traditional and PBL teaching methodologies were asked. The association of various learning styles and preferred teaching methodologies with year of study was also assessed by using Pearson's chi-square test. RESULTS: Out of 523 students, 518 returned the completed questionnaire. A majority of the students had either imagining or experiencing learning style. No change in learning style was observed between years of study. A significant association between the teaching methodologies and year of study was found in the imagining (p=0.033) and experiencing (p=0.044) learning style groups. CONCLUSION: Students from different years of study at medical school did not have significantly different learning styles though the student's preferences to teaching methodologies seem to change over time in the respective learning style groups. Longitudinal studies are necessary to identify the factors influencing such change and explore the association between learning styles over time on teaching methodologies in medical education.

6.
J Pak Med Assoc ; 70(3): 486-490, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-32207431

RESUMEN

OBJECTIVE: To assess knowledge and practice regarding dog bite management among general practitioners in a suburban setting. METHODS: This cross-sectional knowledge and practice study was conducted from March 2017 to October 2017 in district Malir, Karachi, and comprised general practitioners conveniently recruited from 32 randomly selected union councils of the district. The participants were interviewed with the help of a self-generated structured questionnaire. Data were analysed in SS PS 21 . RESULTS: Of the 92 practitioners, 67(72.8%) were males, 43(46.7%) had>10 years' experience, and 63(68.5%)were privately employed. The overall mean age of the sample was 43.77±11.5 years. Mean knowledge scores varied significantly across categories of experience only (p=0.020), withthe lessexperienced practitioners having significantly higher mean knowledge compared to the seniors. CONCLUSIONS: The experience of the general practitioners significantly affected their knowledge with recent graduates found to have higher mean k nowledge scores than older graduates.


Asunto(s)
Mordeduras y Picaduras/terapia , Competencia Clínica , Médicos Generales , Conocimientos, Actitudes y Práctica en Salud , Adulto , Animales , Competencia Clínica/normas , Competencia Clínica/estadística & datos numéricos , Estudios Transversales , Manejo de la Enfermedad , Perros , Femenino , Médicos Generales/normas , Médicos Generales/estadística & datos numéricos , Humanos , Masculino , Pakistán , Pautas de la Práctica en Medicina , Atención Primaria de Salud/métodos
7.
J Pak Med Assoc ; 70(7): 1259-1262, 2020 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-32799288

RESUMEN

A knowledge, attitude and practice cross-sectional survey was conducted among dental practitioners doing private practice in district central, Karachi after checking eligibility and taking their written informed consent. The practitioners were interviewed by the principal investigator with the help of a pre-tested structured questionnaire developed specifically for this study. The study results revealed that 175(88.8%) of the participants were aware that waste management guidelines are applicable to them, 184(93.4%) were aware that healthcare waste is a source of infection whereas 145(73.6%) were aware about the colour coding of healthcare waste bags/containers. Moreover, 165(84.1%) thought that health care waste disposal protocol lessens the chance of injuries and infections whereas 182(92.0%) were in favour of the need to continue medical education about health care waste management. It is recommended that healthcare waste should be segregated and disposed of in a safe manner to protect the people at risk and the environment.


Asunto(s)
Eliminación de Residuos Sanitarios , Administración de Residuos , Estudios Transversales , Odontólogos , Conocimientos, Actitudes y Práctica en Salud , Humanos , Rol Profesional , Encuestas y Cuestionarios
8.
Pak J Med Sci ; 35(4): 1093-1098, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31372149

RESUMEN

OBJECTIVE: To determine the frequency and outcome of electrolyte imbalance in seriously ill children admitted in Paediatric Intensive Care Unit (PICU) of a public sector hospital in Karachi. METHODS: All children between the ages of one month to 12 years admitted in PICU from May 2017 to October 2017 were included. Blood samples were drawn to determine the baseline sodium, potassium, calcium, magnesium and phosphorous and followed 24 hourly or earlier, if needed (Those who had imbalance at admission or on subsequent repeat labs as per protocol). RESULTS: A total of 101 children were included in the study. Electrolyte imbalance was seen in 84%. A single electrolyte imbalance was noted in 30.58%. Hypocalcemia was the most frequent abnormality noted in 57.6%. Among the total expiries during the study period 91% had electrolyte imbalance. Mortality within 48 hours and duration of stay was also increased in these patients. CONCLUSION: Electrolyte imbalance is an important prognostic indicator in critically ill patients.

9.
Microb Pathog ; 119: 103-108, 2018 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-29621564

RESUMEN

The origin of hepatitis E virus (HEV) is not fully understood, but it is considered an emerging zoonotic pathogen. To date, HEV has been isolated from many animal species. The family Hepeviridae consists of two genera. The genus Orthohepevirus includes four distinct species (A, B, C, and D), each with distinct genotypes. Within the Orthohepevirus A species, HEV-1 and HEV-2 host ranges are restricted to humans, whereas genotypes 3 and 4 primarily infect a wide range of diverse animal species, in addition to being zoonotic to humans. Swine and wild boar species were previously thought to be the primary natural HEV reservoir, but recently rabbits have also been identified as major carriers. Moreover, increasing the number of HEV infections within the food supply chain underscore the important role of farming and food processing practices in limiting virus transmission. Notably, a Chinese commercial vaccine has the potential to protect humans and possibly animal reservoirs from HEV infection. This review summarizes the status of HEV infection worldwide in different animal species and outlines various modes of zoonotic transmission, with reference to cross-species transmission and recent vaccine developments.


Asunto(s)
Virus de la Hepatitis E/patogenicidad , Hepatitis E/transmisión , Hepatitis E/virología , Zoonosis/virología , Agricultura , Animales , Reservorios de Enfermedades/virología , Manipulación de Alimentos , Enfermedades Transmitidas por los Alimentos/virología , Genotipo , Hepatitis E/diagnóstico , Hepatitis E/prevención & control , Virus de la Hepatitis E/clasificación , Virus de la Hepatitis E/fisiología , Especificidad del Huésped , Humanos , Conejos , Porcinos , Vacunas Sintéticas , Vacunas Virales
10.
BMC Complement Altern Med ; 15: 32, 2015 Feb 26.
Artículo en Inglés | MEDLINE | ID: mdl-25880671

RESUMEN

BACKGROUND: The development of resistance to conventional anti-typhoid drugs and the recent emergence of fluoroquinolone resistance have made it very difficult and expensive to treat typhoid fever. As the therapeutic strategies become even more limited, it is imperative to investigate non-conventional modalities. In this context, honey is a potential candidate for combating antimicrobial resistance because it contains a broad repertoire of antibacterial compounds which act synergistically at multiple sites, thus making it less likely that the bacteria will become resistant. The in vitro antibacterial activity of 100 unifloral honey samples against a blood culture isolate of multi-drug resistant (MDR) Salmonella typhi were investigated. METHODS: All honey samples were evaluated for both total (acidity, osmolarity, hydrogen peroxide and non-peroxide activity) and plant derived non-peroxide antibacterial activity by agar well diffusion assay at 50% and 25% dilution in sterile distilled water and 25% in catalase solution. Manuka (Unique Manuka Factor-21) honey was used for comparison. The phenol equivalence of each honey sample from 2% to 7% (w/v) phenol was obtained from regression analysis. The antibacterial potential of each honey sample was expressed as its equivalent phenol concentration. The honey samples which showed antibacterial activity equivalent to or greater than manuka honey were considered therapeutically active honeys. RESULTS: Nineteen honey samples (19%) displayed higher hydrogen peroxide related antibacterial activity (16-20% phenol), which is more than that of manuka honey (21-UMF). A total of 30% of the honey samples demonstrated antibacterial activity between 11 and 15% phenol similar to that of manuka honey while 51% of the honey samples did not exhibit any zone of inhibition against MDR-S. typhi at 50% (w/v) dilution. None of the indigenous honey samples displayed non-peroxide antibacterial activity. Only manuka honey showed non-peroxide antibacterial activity at 25% dilution (w/v) in catalase solution. CONCLUSIONS: The honey samples which displayed antibacterial activity equal to or greater than manuka honey may be useful in the clinical conditions where higher hydrogen peroxide related antibacterial activity is required. Manuka honey, which is known to possess non-peroxide antibacterial activity, warrants further evaluation in a suitable typhoid animal model.


Asunto(s)
Antibacterianos/farmacología , Resistencia a Múltiples Medicamentos/efectos de los fármacos , Miel , Peróxido de Hidrógeno/farmacología , Fenoles/farmacología , Plantas/química , Salmonella typhi/efectos de los fármacos , Animales , Miel/análisis , Peróxido de Hidrógeno/análisis , Pruebas de Sensibilidad Microbiana , Pakistán , Fenoles/análisis
11.
Pak J Med Sci ; 31(2): 403-7, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26101500

RESUMEN

OBJECTIVE: To study the association between Protein energy malnutrition and polio-specific immunoglobulin G antibodies production among children in Gadap Town Karachi, Pakistan. METHODS: Comparative cross sectional survey conducted at fixed EPI center and Pediatric OPD of a tertiary care hospital Karachi. Children were selected by convenient sampling method during the period from 17 March to 17 May 2013. It was ensured that they must have received more than seven oral polio vaccine doses as eligibility criteria for the study. A total of 170 blood samples were collected and tested for the presence of polio-specific IgG antibodies using Poliomyelitis IgG ELISA Test Kit produced. RESULTS: Statistically significant relation was found between PEM and IgG antibodies production OR (P = 0.000). Overall Seroprevalence rate among the study population was 98.8%, PEM group 97.6% and healthy group 100%. CONCLUSION: The study demonstrated that there is a need to focus on the protein energy malnutrition among the children as an immunization strategy for the 100% seroprevalence rate in all population against polio in Pakistan.

12.
Mol Vis ; 20: 991-1001, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-25018621

RESUMEN

PURPOSE: This study aimed to investigate the role of CYP1B1 mutations in primary congenital glaucoma (PCG) in Pakistani patients. METHODS: After consent was received, 20 families with at least more than one member affected with primary congenital glaucoma were enrolled in the study. The disease was confirmed with standard ophthalmological investigations. Genomic DNA was extracted from whole blood for localization of linkage and sequencing. Bioinformatics tools were used to assess the predicted pathological role of novel variants. RESULTS: Ten out of 20 families (50%, 10/20) showed homozygosity with CYP1B1-linked short tandem repeat (STR) markers. On direct sequencing of the CYP1B1 gene in the linked families, six mutations, including two novel pathogenic variants, were identified. p. R390H was the most frequently found mutation in five families (50%, 5/10), whereas c.868_869insC, p.E229K, and p.A115P were found once in three families. Two novel mutations, a missense mutation (p.G36D) and an in-frame deletion mutation (p.G67-A70del), were segregated with disease phenotype in two families. Age of disease onset was congenital in all mutations; however, disease severity and response to clinical interventions varied among the mutations and families. Haplotype analysis using five polymorphisms revealed a distinct haplotype for a common mutation. CONCLUSIONS: This is the largest cohort of Pakistani patients with PCG to be genetically screened for CYP1B1 mutations. Identifying common mutation and genotype-phenotype correlations may help in genetic testing and better prognosis for the disease. Novel mutations identified in the study may help in better understanding the pathophysiology of CYP1B1-associated glaucoma.


Asunto(s)
Hidrocarburo de Aril Hidroxilasas/genética , Estudios de Asociación Genética , Glaucoma/congénito , Glaucoma/genética , Mutación/genética , Adulto , Secuencia de Aminoácidos , Hidrocarburo de Aril Hidroxilasas/química , Citocromo P-450 CYP1B1 , Electrorretinografía , Femenino , Glaucoma/enzimología , Glaucoma/fisiopatología , Haplotipos/genética , Homocigoto , Humanos , Masculino , Datos de Secuencia Molecular , Pakistán , Linaje , Adulto Joven
13.
BMC Genet ; 15: 34, 2014 Mar 17.
Artículo en Inglés | MEDLINE | ID: mdl-24636660

RESUMEN

BACKGROUND: Discerning the traits evolving under neutral conditions from those traits evolving rapidly because of various selection pressures is a great challenge. We propose a new method, composite selection signals (CSS), which unifies the multiple pieces of selection evidence from the rank distribution of its diverse constituent tests. The extreme CSS scores capture highly differentiated loci and underlying common variants hauling excess haplotype homozygosity in the samples of a target population. RESULTS: The data on high-density genotypes were analyzed for evidence of an association with either polledness or double muscling in various cohorts of cattle and sheep. In cattle, extreme CSS scores were found in the candidate regions on autosome BTA-1 and BTA-2, flanking the POLL locus and MSTN gene, for polledness and double muscling, respectively. In sheep, the regions with extreme scores were localized on autosome OAR-2 harbouring the MSTN gene for double muscling and on OAR-10 harbouring the RXFP2 gene for polledness. In comparison to the constituent tests, there was a partial agreement between the signals at the four candidate loci; however, they consistently identified additional genomic regions harbouring no known genes. Persuasively, our list of all the additional significant CSS regions contains genes that have been successfully implicated to secondary phenotypic diversity among several subpopulations in our data. For example, the method identified a strong selection signature for stature in cattle capturing selective sweeps harbouring UQCC-GDF5 and PLAG1-CHCHD7 gene regions on BTA-13 and BTA-14, respectively. Both gene pairs have been previously associated with height in humans, while PLAG1-CHCHD7 has also been reported for stature in cattle. In the additional analysis, CSS identified significant regions harbouring multiple genes for various traits under selection in European cattle including polledness, adaptation, metabolism, growth rate, stature, immunity, reproduction traits and some other candidate genes for dairy and beef production. CONCLUSIONS: CSS successfully localized the candidate regions in validation datasets as well as identified previously known and novel regions for various traits experiencing selection pressure. Together, the results demonstrate the utility of CSS by its improved power, reduced false positives and high-resolution of selection signals as compared to individual constituent tests.


Asunto(s)
Bovinos/genética , Selección Genética , Análisis de Secuencia de ADN/métodos , Oveja Doméstica/genética , Animales , Cruzamiento , Mapeo Cromosómico , Sitios Genéticos , Genotipo , Fenotipo , Polimorfismo de Nucleótido Simple
14.
ScientificWorldJournal ; 2014: 867869, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-24892102

RESUMEN

Robotic technologies are being employed increasingly in the treatment of lower limb disabilities. Individuals suffering from stroke and other neurological disorders often experience inadequate dorsiflexion during swing phase of the gait cycle due to dorsiflexor muscle weakness. This type of pathological gait, mostly known as drop-foot gait, has two major complications, foot-slap during loading response and toe-drag during swing. Ankle foot orthotic (AFO) devices are mostly prescribed to resolve these complications. Existing AFOs are designed with or without articulated joint with various motion control elements like springs, dampers, four-bar mechanism, series elastic actuator, and so forth. This paper examines various AFO designs for drop-foot, discusses the mechanism, and identifies limitations and remaining design challenges. Along with two commercially available AFOs some designs possess promising prospective to be used as daily-wear device. However, the design and mechanism of AFO must ensure compactness, light weight, low noise, and high efficiency. These entailments present significant engineering challenges to develop a new design with wide consumer adoption.


Asunto(s)
Articulación del Tobillo/fisiopatología , Pie/fisiopatología , Trastornos Neurológicos de la Marcha/terapia , Aparatos Ortopédicos , Diseño de Prótesis , Humanos
15.
ScientificWorldJournal ; 2014: 436376, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-24892049

RESUMEN

Today, the whole world faces a great challenge to overcome the environmental problems related to global energy production. Most of the islands throughout the world depend on fossil fuel importation with respect to energy production. Recent development and research on green energy sources can assure sustainable power supply for the islands. But unpredictable nature and high dependency on weather conditions are the main limitations of renewable energy sources. To overcome this drawback, different renewable sources and converters need to be integrated with each other. This paper proposes a standalone hybrid photovoltaic- (PV-) wave energy conversion system with energy storage. In the proposed hybrid system, control of the bidirectional buck-boost DC-DC converter (BBDC) is used to maintain the constant dc-link voltage. It also accumulates the excess hybrid power in the battery bank and supplies this power to the system load during the shortage of hybrid power. A three-phase complex vector control scheme voltage source inverter (VSI) is used to control the load side voltage in terms of the frequency and voltage amplitude. Based on the simulation results obtained from Matlab/Simulink, it has been found that the overall hybrid framework is capable of working under the variable weather and load conditions.


Asunto(s)
Suministros de Energía Eléctrica , Electricidad , Modelos Teóricos , Malasia
16.
Sensors (Basel) ; 14(3): 4342-63, 2014 Mar 04.
Artículo en Inglés | MEDLINE | ID: mdl-24599193

RESUMEN

Human motion is a daily and rhythmic activity. The exoskeleton concept is a very positive scientific approach for human rehabilitation in case of lower limb impairment. Although the exoskeleton shows potential, it is not yet applied extensively in clinical rehabilitation. In this research, a fuzzy based control algorithm is proposed for lower limb exoskeletons during sit-to-stand and stand-to-sit movements. Surface electromyograms (EMGs) are acquired from the vastus lateralis muscle using a wearable EMG sensor. The resultant acceleration angle along the z-axis is determined from a kinematics sensor. Twenty volunteers were chosen to perform the experiments. The whole experiment was accomplished in two phases. In the first phase, acceleration angles and EMG data were acquired from the volunteers during both sit-to-stand and stand-to-sit motions. During sit-to-stand movements, the average acceleration angle at activation was 11°-48° and the EMG varied from -0.19 mV to +0.19 mV. On the other hand, during stand-to-sit movements, the average acceleration angle was found to be 57.5°-108° at the activation point and the EMG varied from -0.32 mV to +0.32 mV. In the second phase, a fuzzy controller was designed from the experimental data. The controller was tested and validated with both offline and real time data using LabVIEW.


Asunto(s)
Lógica Difusa , Extremidad Inferior/fisiología , Movimiento/fisiología , Postura/fisiología , Telemetría/instrumentación , Aceleración , Adulto , Fenómenos Biomecánicos , Sistemas de Computación , Electrodos , Electromiografía , Humanos , Masculino , Músculo Esquelético/fisiología , Procesamiento de Señales Asistido por Computador , Adulto Joven
17.
Front Aging Neurosci ; 16: 1368291, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38633982

RESUMEN

The efficacy of current treatments is still insufficient for Alzheimer's disease (AD), the most common cause of Dementia. Out of the two pathological hallmarks of AD amyloid-ß plaques and neurofibrillary tangles, comprising of tau protein, tau pathology strongly correlates with the symptoms of AD. Previously, screening for inhibitors of tau aggregation that target recombinant tau aggregates have been attempted. Since a recent cryo-EM analysis revealed distinct differences in the folding patterns of heparin-induced recombinant tau filaments and AD tau filaments, this study focused on AD seed-dependent tau aggregation in drug repositioning for AD. We screened 763 compounds from an FDA-approved drug library using an AD seed-induced tau aggregation in SH-SY5Y cell-based assay. In the first screening, 180 compounds were selected, 72 of which were excluded based on the results of lactate dehydrogenase assay. In the third screening with evaluations of soluble and insoluble tau, 38 compounds were selected. In the fourth screening with 3 different AD seeds, 4 compounds, lansoprazole, calcipotriene, desogestrel, and pentamidine isethionate, were selected. After AD seed-induced real-time quaking-induced conversion, lansoprazole was selected as the most suitable drug for repositioning. The intranasal administration of lansoprazole for 4 months to AD seed-injected mice improved locomotor activity and reduced both the amount of insoluble tau and the extent of phosphorylated tau-positive areas. Alanine replacement of the predicted binding site to an AD filament indicated the involvement of Q351, H362, and K369 in lansoprazole and C-shaped tau filaments. These results suggest the potential of lansoprazole as a candidate for drug repositioning to an inhibitor of tau aggregate formation in AD.

18.
Heliyon ; 10(1): e23236, 2024 Jan 15.
Artículo en Inglés | MEDLINE | ID: mdl-38163177

RESUMEN

Municipal solid waste management (MSWM) poses a considerable challenge to developing countries like Bangladesh because of the rising waste generation rates and lack of effective management practices such as illegal open dumping and informal waste collection. One of the crucial factors in the successful management of MSW is to select the appropriate technology which is a complex multi-criteria and laborious process. Despite the global emphasis on the importance of MSWM in the literature, there is a lack of studies conducted in developing countries that effectively identify and analyze the critical performance criteria for appropriate technology selection. This research aims to address this shortcoming by identifying, and prioritizing the selection criteria and finally investigating the inter-relationship between them and the degree to which they affect or are affected by one another. First, a thorough literature review and expert consultation were employed to determine a set of 21 key criteria using the Fuzzy Delphi method (FDM). Later, taking into account the imprecise and subjective nature of the DEMATEL method on human judgements, the Fuzzy DEMATEL technique was employed to investigate the cause-effect relationships among the identified criteria. The findings of the study demonstrated that 14 criteria were categorized as causal elements that have the most significant influence on the MSWM technology selection process and 7 criteria were categorized as effect. The selection of MSWM technology demands greater consideration of the top three ranked criteria, namely T4- Access to Technology (AT), T8- Feasibility (F), and the Ec6-Infrastructure requirements (IR). By identifying the pertinent criteria, structures and interrelationships, the outcome of the study can facilitate a better understanding of causal relationships among the criteria that require specific consideration from the decision-makers and allow them to select appropriate MSW management technology.

19.
Front Pharmacol ; 15: 1325359, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38449804

RESUMEN

Background: Liver disease is a serious health concern in today's world, posing a challenge to both healthcare providers and pharmaceutical companies. Most synthetic drugs and chemicals cause liver damage accounting for approximately 10% of acute hepatitis and 50% of acute liver failure. Purpose: The present study aimed to evaluate the hepato-protective activity of an extract of chicory formulation assisted by silver nanoparticles against carbon tetra chloride (CCl4)-induced hepatic damage in rat's liver. Methods: Rats of the Wistar strain (Rattus norvegicus) were used to test the in vivo hepato-protective efficacy at various doses. Rats were randomly divided into nine groups, each containing six rats. The groups were as follows: first group (control), second group (CCl4), third group, silymarin (20 mg/kg of body weight), fourth group (CCl4+chicory) (1.75 mg/kg of b. wt), fifth group (CCl4 + chicory at the dose of 2.35 mg/kg), sixth group (CCl4 + chicory of 3.25 mg/kg), seventh group (CCl4 +AgNPs 1.75 mg/kg of b. wt.), eighth group (CCl4 + AgNPs 2.35 mg/kg of body weight), and ninth group (CCl4 + AgNPs 3.25 mg/kg of b. wt.). Blood samples were taken 24 h after the last administration (i.e., 30th day). The blood samples were analyzed for different serum enzymes such as ALP (alkaline phosphatase), ALT (alanine transaminase), bilirubin (Blr), triglyceride, and cholesterol. Histology liver sections were performed. Results: Treatment with AgNPs and chicory extract showed significant hepato-protective activity in a dose-dependent manner. In three doses, the chicory extract at a rate of 3.25 mg/kg of body weight significantly reduced elevated levels of biochemical markers in comparison to CCl4-intoxicated rats. Histology of the liver sections from CCl4-treated rats revealed inflammation of hepatocytes, necrosis, cytoplasmic degeneration, vacuolization, and a deformed central vein. The chicory formulation extract exhibited a remarkable recovery percentage in the liver architecture that was higher than the drug (i.e., silymarin). While treatment with AgNPs also repaired the degenerative changes and restored the normal form of the liver, chicory formulation extract possessed more hepato-protective potential as compared to AgNPs by regulating biochemical and histo-pathological parameters. Conclusion: This study can be used as confirmation of the hepato-protective potential of chicory compounds for possible use in the development programs of drugs to treat liver diseases.

20.
J Ayub Med Coll Abbottabad ; 24(2): 84-6, 2012.
Artículo en Inglés | MEDLINE | ID: mdl-24397061

RESUMEN

BACKGROUND: Tennis elbow is a condition, characterised by pain and tenderness over the lateral epicondyle of the humerus, and pain on resisted dorsiflexion of the wrist, middle finger, or both. The aim of this randomised controlled trial was to investigate the short term efficacy of local steroid injection compared with oral and topical NSAIDs. METHODS: Sixty patients (45 male and 15 female) were included in the study. The mean age was 42 years for men and 40 years for women. They were placed in group A and B (30 cases each). Group A received local steroid injection (triamcinolone 20 mg mixed with lignocaine 2% 1 cc) and topical NSAID cream application (diclofenac diethylammonium) twice a day, tab. diclofenac sodium 50 mg twice a day for 3 weeks. Group B received tab diclofenac 50 mg twice a day and, topical NSAID cream application twice a day for 3 weeks. Assessment of patients was made 3 times; first at the start of the study, 2nd time after 6 weeks, and 3rd time after 12 weeks. A blinded assessor rated the elbow complaints of the patients at resisted dorsiflexion of wrist using VAS (0 = no severity, 1-3 mild, 4-6 moderate, 7-9 sever, 10 = maximum severity). RESULTS: At six weeks, 22 (73.33%) patient in group A had no pain as compared to 7 (23.33%) patients in group B who were pain free (p < 0.0001, chi2 = 38.75). At 12 weeks 27 (90%) patients in group A were pain free compared to group B in which 7 (23.33%) patients were pain free (p < 0.0001, chi2 = 27.56). CONCLUSION: In patients with tennis elbow, the use of local steroid injection in combination with topical and oral NSAIDs is superior to the use of combination of topical and oral NSAIDs. Better results with combination therapy using local steroid injection may be limited to the short term.


Asunto(s)
Glucocorticoides/uso terapéutico , Codo de Tenista/tratamiento farmacológico , Triamcinolona/uso terapéutico , Administración Tópica , Adulto , Anestésicos Locales/administración & dosificación , Antiinflamatorios no Esteroideos/administración & dosificación , Femenino , Glucocorticoides/administración & dosificación , Humanos , Inyecciones , Lidocaína/administración & dosificación , Masculino , Dimensión del Dolor , Resultado del Tratamiento , Triamcinolona/administración & dosificación
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