Recently Published Articles
Evaluation of a Stroke Protocol Using Computed Tomography Angiography for the Evaluation of Acute Ischemic Stroke Patients
Abstract:
Computed tomography angiography (CTA) provides early assessment of cerebral vasculature in ED patients presenting with Acute Ischemic Stroke (AIS). Prior studies using 4 row detector CT scanners have suggested that results may be used to determine who receives thrombolytics (tPA). We sought to evaluate the rate of normal CTA and the use of tPA in AIS patients with and without blockages using modern CT technology. We conducted a retrospective cohort study of all code stroke patients presenting to our ED over a 3 year period. Inclusion criteria included an ED and neurology diagnosis of AIS with a CTA performed at presentation. All patients had a NIHSS score recorded at presentation and underwent imaging using a 64 row detector scanner with 50cc of non-ionic contrast. Demographic, ...
Functional, Structural and Contextual Analysis of a Variant of Uncertain Clinical Significance in BRCA1: c.5434C->G (p. Pro1812Ala)
Abstract:
Interpreting variants of uncertain significance (VUS) for their effect on protein function, and therefore for the risk of developing cancer, has become a challenge in clinical practice for genetic counselling services. The present work combines structural bioinformatics and systems biology based mathematical modelling approaches with the aim of determining the pathogenicity of the mutation c.5434C->G (p.Pro1812Ala) in the BRCA1 gene (detected in a patient from a high risk family) and also to mechanistically understand the effect of this mutation in DNA damage response, a key process in cancer development. The results obtained showed that this mutation prevents the interaction of BRCA1 with key proteins of the cell cycle, subsequently impairing BRCA1-dependent induction of cell cycle arrest. The comparison of the molecular mechanisms associated with the native BRCA1 protein and the mutated variant function in DNA damage response showed that the latter undergoes ...
Effects of Soy-Milk on Blood Lipids and Total Homocysteine Level in Postmenopausal Women of Bangladesh
Abstract:
Isoflavones are phytoestrogens present in natural sources, and they resemble estradiol in structure and manner of action. The aim of the study was to assess the effects of soy-milk on serum tHcy levels and to assess the glycemic and lipidemic status of Bangladeshi postmenopausal women. Thirty-six women (aged 50 ±5.16 years, M ±SD) participated in a randomized, un-blinded, open-ended, crossover study design for 52 days. The soy-milk group consumed 350 mL of milk twice a day for 21- day; the milk contained ~30 mg of isoflavones. FBG, PPG, HbA1c, TC, TG, HDL-C, NEFA, and tHcy were measured on day 0, day 21, day 31, and day 52 with a 10- day washout period. After the consumption of soy-milk, the l...
Calcium Transient Assays for Compound Screening with Human iPSC-derived Cardiomyocytes: Evaluating New Tools
Abstract:
Calcium (Ca2+) plays a central role in regulating many biological processes in the cell from muscle contraction to neurotransmitter release. The need for reliable fluorescent calcium indicator dyes is of vast importance for studying many aspects of cell biology as well as screening compounds using phenotypic high throughput assays. We have assessed two of the latest generation of calcium indicator dyes, FLIPR Calcium 6 and Cal-520 AM for studying calcium transients (CaTs) in induced pluripotent stem cell (iPSC) -derived human cardiomyocytes. FLIPR Calcium 6 and Cal-520 dyes both displayed robust CaTs with a high signal-to-noise ratio (SNR) and were non-toxic to the cells. The analysis showed that CaT amplitudes were stable between measurements, but CaT duration was more variable and tended to increase between reads. Two methods were compared for drug-screening hit-selection; difference in average (unstandardized) and standardized difference. The unstandardized dif...
Human Umbilical Cord-Derived Mesenchymal Stem Cells as a Source of Odontoblasts: a GMP-compliant Approach
Abstract:
Stem cell-based regenerative therapy can be considered an innovative approach for curing dental caries. Pulp stem cells from human exfoliated deciduous teeth (SHEDs) represent a source of committed cells for generating odontoblasts
Profile of Teenage Pregnancy in Hadramout, Yemen
Abstract:
A cross-sectional study was designed to collect socio-demographic and obstetric data about female teenagers who have pregnancy and visiting primary health care centers for antenatal care. Data were collected by a trained 60 medical students of the 6th level in Hadramout University during their post in primary health care centers from 20 May – 10 June 2008. A convenience sample of 237 teenagers who were attending the 12 PHC centers for antenatal care checking constituted the study subjects. Fifty-one out of 237 (21.5%) pregnant women were of age 17 years or less. Most of them were from rural areas with statistically significant difference in both age groups (p-value <0.002),they w...
Risk Factors for Stunted Growth among Children Aged 6–59 Months in Rural Uganda
Abstract:
Despite the agreed global and national stunting reduction targets, Uganda has made very little progress. Understanding context-specific risk factors for stunted growth is therefore pertinent to designing programs to address the problem. A cross-sectional study was conducted in 32 randomly selected villages in Buhweju district, Southwest Uganda. Data entry, cleaning and analysis were carried out using Statistical Package for Social Sciences (SPSS) version 21. A regression analysis was conducted to examine the associations between potential risk factors and stunted growth. The survey covered 256 households and anthropometric measurements were taken for 221 children aged 6–59 months. The majority of the households (66%) in the district were food insecure and had a low socioeconomic status (84%). The prevalence of stunting in Buhweju district was 51%, which is significantly higher than the regional and national averages. Only 28% of the...
“On the Road to A Better Life”: An Innovative Suicide Prevention Program Based on The Realization of Meaningful Personal Goals
Abstract:
Suicide prevention programs centred on reinforcing protective factors are uncommon. Aims. Since leading a meaningful life is incompatible with suicide, a 14-week program designed to help participants realize meaningful personal goals was created to improve the psychological well-being (PWB) of depressed older adults (≥ 65 years). Persons scoring 9 or above on the Beck Depression Inventory- II (M = 22.05) took part in the program (n = 24). Their levels of PWB, depression, and suicidal thoughts were compared to those of a control group (n = 18). The questionnaires were completed three times: pre-test, post-test, and follow-up (six months later). Analyses showed that the program participants improve...
A Specific Case of Non-Specificity: Longitudinal Effects of Dysfunctional Attitudes on Depressive, Eating Disorder and Aggressive Symptoms in Children and Adolescents
Abstract:
An important step in the validation of disorder-specific etiological models is the examination of the predictive specificity of proposed vulnerability factors. It may advance the understanding of the emergence of comorbidity and the identification of at risk-populations for mental disorders. To enhance the currently limited evidence on the specificity of Beck´s cognitive diathesis-stress model of depression, the present study investigated longitudinal effects of dysfunctional attitudes and stressful life events on the development of depressive, eating disorder and aggressive symptoms in children and adolescents. A large sample of initially asymptomatic children and adolescents completed self-report symptom measures at study entrance and again approx. 20 months later, and reported stressful life events during the study interval. Stressful life events proved to be a risk factor to all investigated symptom domains. Dysfunctional attitudes at T1 were prospectively re...
Obstructive Sleep Apnea Treatment with Epap Nasal Devices: Physiological Principles and Limitations
Abstract:
Expiratory Positive airway pressure (EPAP) devices such as prevent have been used for treatment of obstructive sleep apnea without discussing their limitations. In this short review we discuss the physiological limitations of EPAP devices during inspiration and during expiration. During spontaneous breathing, when EPAP is excessive, the patient would have difficulty breathing in because lung compliance decreases at higher volumes. Furthermore excessive EPAP could lead to progressive trapping of air in the lungs. An ideal EPAP device should allow the patient to adjust the resistance to a comfortable level that would provide EPAP without a progressive buildup in pressure, without compromising tidal volume, without causing CO2 retention, and without disturbing sleep. The use of EPAP devices with adjustable resistance is essential for best results in treatment of obstructive sleep apnea and snoring.