Electrochemical Growth of Pd Doped ZnO Nanorods

WOS: 000349827200059In this work, dense arrays of pure and Pd doped zinc oxide (ZnO) nanorods (NRs) were fabricated by an electrochemical growth. Pure and Pd doped ZnO NRs were characterized via scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and optic spectroscopy. Structural studies confirmed that pure and doped ZnO NRs present the hexagonal wurtzite crystal structures. The optical properties of pure and doped ZnO NRs were found to present redshift by increasing doping concentration. The diameters of the NRs increase with increasing Pd doping concentration under same condition. Compared with pure ZnO NRs, the Pd doped ZnO NRs presents improved optical properties in terms of bandgap energy from 3.24 eV to 1.97 eV. These bandgap values were obtained by optical absorption using a UV-Visible spectrophotometer. In addition, Pd doping concentration in ZnO affects the active species on the surface such as oxygen deficiencies and hydroxyls. The electrochemically growing mechanism is also discussed in detail in the scope of this work. (C) 2015 The Electrochemical Society. All rights reserved.TUBITAK [113F403, 113M935]The authors thank KUYTAM at Koc University and Dr. Baris Yagci for SEM measurements. This research is supported by TUBITAK grant no.: 113F403 and grant no.: 113M935

The course of post-stroke bladder problems and their relation with functional and mental status and quality of life: A six-month, prospective, multicenter study

WOS: 000511167800006PubMed: 31893270Objectives: the aim of this study was to evaluate the frequency and course of post-stroke lower urinary tract dysfunction (LUTD) from early term up to a period of six months and to investigate the relation of LUTD with functional and mental status and quality of life (QoL) in stroke patients. Patients and methods: This prospective study included a total of 70 stroke patients (44 males, 26 females; mean age 62.7 +/- 7.0 years; range, 46 to 79 years) from five different centers across Turkey between June 2015 and January 2017. the patients were questioned using the Danish Prostatic Symptom Score (DAN-PSS) to evaluate LUTD and evaluated using the Modified Barthel Index (MBI), Incontinence QoL Questionnaire (I-QOL), and Mini-Mental State Examination (MMSE) at one, three, and six months. Results: At least one symptom of LUTD was observed in 64 (91.4%), 58 (82.9%), and 56 (80%) of the patients according to the DAN-PSS at one, three, and six months, respectively. A statistically significant improvement was found in the DAN-PSS, MBI, MMSE, I-QOL total scores, avoidance and psychosocial subgroup scores at six months compared to the first month scores (p<0.05). There was a significant negative correlation between the DAN-PSS symptom score at one month and the MBI, MMSE, and QoL scores at six months. the DAN-PSS bother and total scores were found to be significantly and negatively correlated only with the subscales of the QoL questionnaire. Conclusion: Based on our study results, LUTD was very common and the prevalence of LUTD findings decreased constantly during six-month follow-up, showing an association with a poor cognitive and functional status and QoL in stroke patients with LUTD

Magnetic Resonance Imaging Guided Vacuum Assisted and Core Needle Biopsies

Objective: The purpose of this study to present the results of Magnetic resonance imaging (MRI) guided cutting needle biopsy procedures of suspicious breast lesions that can be solely detected on Magnetic resonance (MR) examination

Shear Wave Elastography in the Evaluation of Liver Fibrosis in Children

Background:Shear-wave elastography (SWE) is a novel noninvasive method that involves application of local mechanical compression on soft tissue using focused ultrasonography and acquiring strain images that show tissue response. In this study, our goal was to assess the performance of SWE in the staging of liver fibrosis in children with chronic liver disease.Methods:The study involved measuring SWE values in the right lobe of the liver in a patient group of 76 children with chronic liver disease and a control group of 50 healthy subjects. In the patient group, the shear elastic modulus values were correlated with biopsy results according to the Brunt scoring system (F0: portal fibrosis, F1: perisinusoidal or portal/periportal fibrosis, F2: both perisinusoidal and portal/periportal fibrosis, F3: bridging fibrosis, and F4: cirrhosis). Performance of SWE in estimating liver fibrosis in children was determined based on a receiver-operating characteristics (ROC) analysis.Results:Mean SWE values of the control group and F0 group were not statistically significantly different (P=0.106). The mean SWE values of the F1, F2, F3, and F4 groups were higher than that of the control group (all P<0.001). Based on kiloPascal measurement values, the area under the ROC curve was 95.2% (95% confidence interval [CI] 92.1-99.5), with a sensitivity for diagnosing liver fibrosis of 91.5%, a specificity of 94.0%, a positive predictive value of 93.1%, and a negative predictive value of 92.6%. Based on meter-per-second measurement values, the area under the ROC curve was 96.3% (95% CI 92.7-99.8), with a sensitivity for diagnosing liver fibrosis of 93.2%, a specificity of 94.0%, a positive predictive value of 93.2%, and a negative predictive value of 94.0%. Mean SWE values for patients with nonalcoholic steatohepatitis were higher than those in the remainder of the study group.Conclusions:Although liver fibrosis can be detected using SWE, differentiation of fibrosis stages could not be achieved. The presence of steatosis significantly increased the mean SWE values on elastography and so care should be taken when assessing children with nonalcoholic steatohepatitis

Endocan and Soluble Triggering Receptor Expressed on Myeloid Cells-1 as Novel Markers for Neonatal Sepsis

Neonatal sepsis is an important cause of neonatal morbidity and mortality in the neonatal intensive care unit. Soluble triggering receptor expressed on myeloid cells-1 (sTREM-1) has been evaluated in sepsis and septic shock, and it was found to be valuable in distinguishing septic cases from nonseptic cases. Endocan is constitutively expressed by endothelial cells, and high levels of endocan may be of relevance for the promotion of systemic inflammation. The aim of this study was to investigate whether the levels of sTREM-1 and endocan were increased in late-onset neonatal sepsis. Methods: Patients were classified into septic and nonseptic groups. Blood was collected from a peripheral vein of all septic newborns and healthy newborns at the time of initial laboratory evaluation before any treatment, and within 48–72 hours after initiation of treatment. Serum sTREM-1 and endocan measurements were performed when the study was finished. Results: The study population comprised of 50 neonates: 20 nonseptic neonates and 30 septic neonates. The groups were similar with regards to baseline characteristics. The initial measurements of interleukin-6 (IL-6), sTREM-1, endocan, and immature/total neutrophil ratio (I/T ratio) were significantly higher in septic neonates in comparison with nonseptic neonates. Receiver operating characteristic (ROC) curve analyses revealed that IL-6, sTREM-1, endocan, and I/T ratio resulted in significant areas under the curve (AUC) with respect to early identification of septic neonates. Soluble TREM-1 and IL-6 performed best to distinguish septic neonates from nonseptic neonates. Univariate logistic regression analysis showed that increased IL-6 and sTREM-1 were strong predictors of neonatal late-onset sepsis. Conclusion: Serum sTREM-1, IL-6, endocan levels, and I/T ratio increased in septic neonates. However, the diagnostic accuracy of circulating sTREM-1 seemed to be better than endocan and I/T ratio, but lower than IL-6

An evaluation of bladder emptying methods and the effect of demographic and clinical factors on spontaneous voiding frequency in stroke patients

In this study, the bladder emptying methods at different stages of the post-stroke period along with the effects of demographic and clinical parameters on spontaneous voiding frequency were investigated. The frequencies of bladder emptying methods at admission to the rehabilitation clinic, after neurourological and urodynamic assessment and at home after discharge were spontaneous voiding (SV) 51/99 (51.5 %), 62/99 (62.6 %), 73/99 (73.7 %), emptying without a urinary catheter + an external collector system (EWUC + ECS) 24/99 (24.2 %), 18/99 (18.2 %), 17/99 (17.2 %), intermittent catheterization (IC) 1/99 (1.0 %), 15/99 (15.2 %), 6/99 (6.1 %), indwelling urethral catheter (IUC) 23/99 (23.2 %), 4/99 (4.0 %) and 3/99 (3.0 %), respectively. Lower spontaneous voiding frequencies were observed in single-divorced and geriatric individuals (p < 0.05). The number of patients who modified the method at home was 2/62 for SV, 5/18 for EWUC + ECS, 9/15 for IC, and 2/4 for IUC. The majority of stroke patients were able to void spontaneously and the spontaneous voiding frequency increased at follow-up. The spontaneous voiding frequency was low in geriatric and single-divorced subgroups. The method in which the most changes occurred was IC. © 2012 Springer-Verlag

Post-stroke lower urinary system dysfunction and its relation with functional and mental status: a multicenter cross-sectional study

###EgeUn###Background: Review of the literature clearly reveals that little is known about the association between functional and mental status, and Lower Urinary Tract Dysfunction (LUTD) in patients with stroke. Objective: The aim of this study was to assess functional and mental status in stroke patients and to identify possible associations with the prevalence, severity and bother of LUTD. Material and methods: This study was designed as a cross-sectional study and included 260 stroke patients enrolled from six different hospitals in Turkey. The patients were questioned using the Danish Prostatic Symptom Score (DAN-PSS) Questionnaire to evaluate LUTD, and evaluated using the Modified Barthel Index (MBI), Incontinence Quality of Life Questionnaire (I-QoL), and the Mini Mental State Examination (MMSE). Results: At least one LUTD finding was reported in 243 (93.5%) patients; the most commonly encountered complaint in these patients was nocturia (75.8%). The mean MBI, MMSE, and I-QoL scores were found to be significantly lower in LUTD (+) patients compared to LUTD (-) patients (p = 0.000, p = 0.005, and p < 0.01, respectively). Similarly all parameters (MBI, MMSE, and I-QoL scores) assessed were found to be significantly lower for patients with urinary incontinence than those without incontinence (p = 0.000, p = 0.000, and p < 0.01, respectively). Conclusion: LUTD is a common problem in patients with stroke. LUTD is associated with poorer cognitive and functional status and the quality of life in these patients. We, therefore, suggest that bladder dysfunction should not be overlooked during rehabilitation of stroke patients