130 research outputs found
The Relationship Between Digit Ratio (2D: 4D) and Cardiovascular Capacity in Young Adults
DergiPark: 379062tmsjAims: The ratio of the second-to-fourth finger length was first proposed as a prenatal testosterone biomarker. Studying this matter with a different point of view, the aim of this study is to find whether there is a positive relationship between digit ratio and cardiovascular capacity.Methods: The data of 82 students who were between the ages of 18 and 25 old from Trakya University Faculty of Medicine were analyzed by evaluating the results of the six-minute walking test and the results of their digit measurements. Independent Samples T-Test was used to determine the correlation between the prevalence of longer 4th digit and six-minute walking test results.Results: The data obtained from the test results of the students, that were grouped regarding digit ratio, were statistically evaluated. With the results of the six-minute walking test, students that have lower digit ratio walked 593.87 ± 73.2 meters while students with higher digit ratio walked 584.17 ± 71 meters showing us that there is not a significant relationship between cardiovascular capacity and digit ratio.Conclusion: With the gathered information and results, it is seen that there is not a positive relationship between digit ratio and cardiovascular capacity. In conclusion it can be said that digit ratio does not have a beneficial effect on a persons cardiovascular capacity. Usage of digit ratio as a prenatal hormone exposure has been increasing, and extensive studies in physiological and psychological conditions in humans have been correlated with digit ratio, including athletic ability, fertility, social behaviors, sex-biased diseases, and sexual orientatio
Synthesis, antimicrobial and antioxidant activities of pyridyl substituted thiazolyl triazole derivatives
In this present study, 63 different 5-[4-methyl-2-(pyridin-3/4-yl)thiazole-5-yl]-4-substituted-3-substituted benzylthio-4H-1,2,4-triazole derivatives were synthesized, and evaluated for their in vitro antimicrobial activity against various human pathogenic microorganisms and antioxidant activity. The derivatives were synthesized in a multi-step synthesis procedure including triazole and thiazole ring closure reactions, respectively. The synthesized derivatives (A1-24; B1-39) were screened for their antibacterial, antifungal, and antioxidant activities compared to standard agents. The derivatives possessing 3-pyridyl moiety particularly exhibited relatively high antibacterial activity (MIC= < 3.09-500 µg/mL) against Gram-positive bacteria, and compounds possessing 4-pyridyl moiety showed remarkable antioxidant activity.Eskisehir Osmangazi Universit
ISPARTA İLİNDE FOTOVOLTAİK/TERMAL (PV/T) HİBRİT SİSTEMİN PERFORMANS ANALİZİ
Teknolojinin hızla geliştiği ve yaygın olarak kullanıldığı günümüz dünyasında enerji tüketimi artmaktadır. Enerji ihtiyacının ucuz ve çevreci bir şekilde karşılanabilmesi için yenilenebilir enerji kaynakları gün geçtikçe önem kazanmaktadır. Bununla birlikte güneş enerjisinden sıcak su ve elektrik enerjisi üretimi gibi uygulamalar yaygınlaşmıştır. Bu çalışmanın amacı, güneş enerjisinden elektrik üretimi esnasında panel sıcaklığının artması sonucu azalan verimi, paneli su ile soğutarak artırmaktır. Bu amaçla yapılan deneysel çalışmada, PV panelin arka yüzeyine yerleştirilen borular içerisinden geçirilen su ile panel yüzeyinde soğutma sağlanmıştır. Panelin ısısını alarak sıcaklığı artan su, bir su deposu içerisinde dolaştırılarak bünyesindeki ısı depodaki suya aktarılmaktadır. Bu şekilde panelin soğutmasıyla hem PV/T sistemin verimi artırılmış hem de sıcak su temin edilmiş olacaktır. Deney sonuçlarına göre, soğutmalı ve soğutmasız paneller karşılaştırıldığında, sistemin soğutulmasıyla elektrik üretiminde yaklaşık % 35’lik güç artışı ve % 7’lik bir verim artışı elde edilmiştir
Gastric Cancer And The İmportance Of Early Diagnosis
Mide kanseri; dünyada malign tümörler arasında dördüncü sıklıkla görülür, Türkiye’de ise beşinci sıklıkla görülür. Tüm dünyada kansere bağlı ölüm nedenleri arasında ikinci sıklıktadır. Geçmiş yıllarda beş yıllık survey %15 iken günümüzde bu oran %32’dir. Bu duruma erken evrede tanı ve etkin tedavi yöntemleri temel etken olmuştur. Bu makale aromaterapinin yararları, etki mekanizması ve hemşirelik için önemini açıklamak amacıyla planlanmıştırGastric carcinoma is the fourth-most common cancer worldwide and the fifth-most common malignancy in Turkey. Gastric cancer remains the second leading cause of cancer-related deaths worldwide. The overall 5-year survival rate is 15% in the past decade however it has risen over %32 in the recent years. The major factors influencing survival are diagnosis at early stage and more effective treatment methods
Pendrin expression in nodular and non-nodular thyroid tissues
Introduction: Different mechanisms for the expression of pendrin which is an apical iodide transporter have been reported in nodular
thyroid tissues compared to normal thyroid. The aim of the present study was to determine the alterations of pendrin expression in
nodular and surrounding non-nodular thyroid tissues and clarify the role of pendrin in the functional behaviour of nodular lesions.
Material and methods: Twenty-six nodular and paired non-nodular normal thyroid tissues were collected at the same centre. Patients
were divided into two groups based on the function of the dominant thyroid nodule; hot nodules (n = 18) and cold nodules (n = 8).
mRNA levels of pendrin were evaluated by quantitative RT-PCR. Pendrin protein expression was determined by immunohistochemical
analysis. Results of dominant nodules were compared to non-nodular thyroid tissue of the same patient.
Results: No statistically significant difference was found with respect to qualitative and quantitative measurements of pendrin expression
between hot and cold nodules. However, percent immunohistochemical staining of pendrin was significantly higher in both hot
and cold nodules compared to non-nodular thyroid tissue of the same patients. RT-PCR revealed comparable mRNA levels of pendrin
gene between hot nodules and corresponding normal thyroid tissues. However, in cold nodules, significantly decreased mRNA levels of
pendrin were observed compared to normal thyroid tissue. mRNA levels of pendrin showed significant positive correlation with TSH in
corresponding non-nodular thyroid tissues.
Conclusions: The present study demonstrates that expression of pendrin could not be influenced by TSH in thyroid nodules and expression
level of pendrin seems not to have an effect on nodule function. (Endokrynol Pol 2013; 64 (3): 208–214)Wstęp: W guzkowej tkance tarczycowej opisano odmienny od pozaguzkowej tkanki tarczycowej mechanizm ekspresji pendryny —
transportera jodu zlokalizowanego w części szczytowej komórki. Celem badania było ustalenie zmian w ekspresji pendryny w guzkowej
tkance tarczycowej i otaczającej ją pozaguzkowej tkance tarczycowej, aby wyjaśnić rolę pendryny w zachowaniu czynnościowym zmian
guzkowych.
Materiał i metody: W tym samym ośrodku pobrano 26 wycinków guzkowej tkanki tarczycowej i sparowanych wycinków pozaguzkowej
prawidłowej tkanki tarczycowej. Pacjentów podzielono na dwie grupy w zależności od statusu czynnościowego guzka dominującego:
grupę z guzkami gorącymi (n = 18) i grupę z guzkami zimnymi (n = 8). Poziom mRNA i pendryny oznaczono ilościowo metodą RT-PCR.
Ekspresję białka pendryny oznaczono metodą immunohistochemiczną. Wyniki dla guzków dominujących porównano z wynikami dla
tkanki pozaguzkowej u tego samego pacjenta.
Wyniki: Nie stwierdzono statystycznie znamiennych różnic pomiędzy guzkami gorącymi i zimnymi, jeżeli chodzi o wyniki oznaczenia
ilościowego i jakościowego ekspresji pendryny. Procentowe barwienie immunohistochemiczne w kierunku pendryny było natomiast
znamiennie większe zarówno w przypadku guzków gorących, jak i zimnych w porównaniu z tkanką pozaguzkową u tych samych
pacjentów. RT-PCR wykazało porównywalne poziomy mRNA genu kodującego pendrynę w guzkach gorących i prawidłowej tkance
tarczycowej u tych samych pacjentów. Z kolei w przypadku guzków zimnych stwierdzono znamiennie niższe poziomy pendryny
w porównaniu z prawidłową tkanką tarczycową. Stwierdzono też korelację dodatnią poziomu mRNA pendryny i poziomu TSH w korespondujących
tkankach pozaguzkowych.
Wnioski: W przeprowadzonym badaniu wykazano, że na ekspresję pendryny nie może mieć wpływu TSH w guzkach tarczycy oraz że
poziom ekspresji pendryny nie wydaje się wpływać na czynność guzków. (Endokrynol Pol 2013; 64 (3):208–214
The importance of the mean platelet volume in the diagnosis of supraventricular tachycardia
This retrospective study aimed to investigate the diagnostic relation between the mean platelet volume (MPV) and supraventricular tachyarrhythmia (SVT) in patient with documented atrial tachyarrhythmia in the emergency department (ED). Two study groups were compared; a SVT group with arrive at the ED with documented SVT (n=122) and 100 healthy adult without any palpitation symptom, arrhythmic disease, and with normal physical examination results that were brought for checkups to the cardiology polyclinic were classified as control group. Blood samples were obtained from all patients for determining the hematologic counts and MPV during first hour in ED period. In terms of the focus of the study, hemoglobin, neutrophil count, mean cell volume (MCV), red cell distribution width (RDW), platelet, white blood cell (WBC), and lymphocyte counts were similar in both group (p > 0.05). MPV in the SVT group was signifi cantly higher than in the control group (9.12±1.22 fl vs 8.64±0.89 fl , p < 0.001). Multivariate logistic regression analysis showed that just MPV was independent predictor of SVT in patients with palpitation in ED (odds ratio [OR] 8.497, 95% confidence interval (6.181 to 12.325), p=0.012). The present study described that MPV is helpful parameter for the diagnosis of SVT in emergency department, for the first time in the literature.Keywords: mean platelet volume, inflammation, palpitation, supraventricular tachycardia, diagnosticAfrican Health sciences Vol 14 No. 1 March 201
Constitutive relations for the isotropic deformation of frictionless packings of polydisperse spheres
Infected pancreatic necrosis: outcomes and clinical predictors of mortality. A post hoc analysis of the MANCTRA-1 international study
: The identification of high-risk patients in the early stages of infected pancreatic necrosis (IPN) is critical, because it could help the clinicians to adopt more effective management strategies. We conducted a post hoc analysis of the MANCTRA-1 international study to assess the association between clinical risk factors and mortality among adult patients with IPN. Univariable and multivariable logistic regression models were used to identify prognostic factors of mortality. We identified 247 consecutive patients with IPN hospitalised between January 2019 and December 2020. History of uncontrolled arterial hypertension (p = 0.032; 95% CI 1.135-15.882; aOR 4.245), qSOFA (p = 0.005; 95% CI 1.359-5.879; aOR 2.828), renal failure (p = 0.022; 95% CI 1.138-5.442; aOR 2.489), and haemodynamic failure (p = 0.018; 95% CI 1.184-5.978; aOR 2.661), were identified as independent predictors of mortality in IPN patients. Cholangitis (p = 0.003; 95% CI 1.598-9.930; aOR 3.983), abdominal compartment syndrome (p = 0.032; 95% CI 1.090-6.967; aOR 2.735), and gastrointestinal/intra-abdominal bleeding (p = 0.009; 95% CI 1.286-5.712; aOR 2.710) were independently associated with the risk of mortality. Upfront open surgical necrosectomy was strongly associated with the risk of mortality (p < 0.001; 95% CI 1.912-7.442; aOR 3.772), whereas endoscopic drainage of pancreatic necrosis (p = 0.018; 95% CI 0.138-0.834; aOR 0.339) and enteral nutrition (p = 0.003; 95% CI 0.143-0.716; aOR 0.320) were found as protective factors. Organ failure, acute cholangitis, and upfront open surgical necrosectomy were the most significant predictors of mortality. Our study confirmed that, even in a subgroup of particularly ill patients such as those with IPN, upfront open surgery should be avoided as much as possible. Study protocol registered in ClinicalTrials.Gov (I.D. Number NCT04747990)
Burnout among surgeons before and during the SARS-CoV-2 pandemic: an international survey
Background: SARS-CoV-2 pandemic has had many significant impacts within the surgical realm, and surgeons have been obligated to reconsider almost every aspect of daily clinical practice. Methods: This is a cross-sectional study reported in compliance with the CHERRIES guidelines and conducted through an online platform from June 14th to July 15th, 2020. The primary outcome was the burden of burnout during the pandemic indicated by the validated Shirom-Melamed Burnout Measure. Results: Nine hundred fifty-four surgeons completed the survey. The median length of practice was 10 years; 78.2% included were male with a median age of 37 years old, 39.5% were consultants, 68.9% were general surgeons, and 55.7% were affiliated with an academic institution. Overall, there was a significant increase in the mean burnout score during the pandemic; longer years of practice and older age were significantly associated with less burnout. There were significant reductions in the median number of outpatient visits, operated cases, on-call hours, emergency visits, and research work, so, 48.2% of respondents felt that the training resources were insufficient. The majority (81.3%) of respondents reported that their hospitals were included in the management of COVID-19, 66.5% felt their roles had been minimized; 41% were asked to assist in non-surgical medical practices, and 37.6% of respondents were included in COVID-19 management. Conclusions: There was a significant burnout among trainees. Almost all aspects of clinical and research activities were affected with a significant reduction in the volume of research, outpatient clinic visits, surgical procedures, on-call hours, and emergency cases hindering the training. Trial registration: The study was registered on clicaltrials.gov "NCT04433286" on 16/06/2020
The frequency of Duchenne muscular dystrophy/Becker muscular dystrophy and Pompe disease in children with isolated transaminase elevation: results from the observational VICTORIA study
IntroductionElevated transaminases and/or creatine phosphokinase can indicate underlying muscle disease. Therefore, this study aims to determine the frequency of Duchenne muscular dystrophy/Becker muscular dystrophy (DMD/BMD) in male children and Pompe disease (PD) in male and female children with isolated hypertransaminasemia.MethodsThis multi-center, prospective study enrolled patients aged 3–216 months with serum alanine transaminase (ALT) and/or aspartate transaminase (AST) levels >2× the upper limit of normal (ULN) for ≥3 months. Patients with a known history of liver or muscle disease or physical examination findings suggestive of liver disease were excluded. Patients were screened for creatinine phosphokinase (CPK) levels, and molecular genetic tests for DMD/BMD in male patients and enzyme analysis for PD in male and female patients with elevated CPK levels were performed. Genetic analyses confirmed PD. Demographic, clinical, and laboratory characteristics of the patients were analyzed.ResultsOverall, 589 patients [66.8% male, mean age of 63.4 months (standard deviation: 60.5)] were included. In total, 251 patients (188 male and 63 female) had CPK levels above the ULN. Of the patients assessed, 47% (85/182) of male patients were diagnosed with DMD/BMD and 1% (3/228) of male and female patients were diagnosed with PD. The median ALT, AST, and CPK levels were statistically significantly higher, and the questioned neurological symptoms and previously unnoticed examination findings were more common in DMD/BMD patients than those without DMD/BMD or PD (p < 0.001).DiscussionQuestioning neurological symptoms, conducting a complete physical examination, and testing for CPK levels in patients with isolated hypertransaminasemia will prevent costly and time-consuming investigations for liver diseases and will lead to the diagnosis of occult neuromuscular diseases.
Trial RegistrationClinicaltrials.gov NCT04120168
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