Sh3pxd2b Mice Are a Model for Craniofacial Dysmorphology and Otitis Media

Craniofacial defects that occur through gene mutation during development increase vulnerability to eustachian tube dysfunction. These defects can lead to an increased incidence of otitis media. We examined the effects of a mutation in the Sh3pxd2b gene (Sh3pxd2bnee) on the progression of otitis media and hearing impairment at various developmental stages. We found that all mice that had the Sh3pxd2bnee mutation went on to develop craniofacial dysmorphologies and subsequently otitis media, by as early as 11 days of age. We found noteworthy changes in cilia and goblet cells of the middle ear mucosa in Sh3pxd2bnee mutant mice using scanning electronic microscopy. By measuring craniofacial dimensions, we determined for the first time in an animal model that this mouse has altered eustachian tube morphology consistent with a more horizontal position of the eustachian tube. All mutants were found to have hearing impairment. Expression of TNF-α and TLR2, which correlates with inflammation in otitis media, was up-regulated in the ears of mutant mice when examined by immunohistochemistry and semi-quantitative RT-PCR. The mouse model with a mutation in the Sh3pxd2b gene (Sh3pxd2bnee) mirrors craniofacial dysmorphology and otitis media in humans

Effect of positional change and inhalant anesthesia on parameters of acoustic reflectometry

Objective: Purpose of this study was to find out the effect of positional change and inhalant anesthesia on acoustic reflectometry (AR) parameters (reflectivity and curve angle). Method: AR parameters were measured on 58 ears with otitis media in sitting position before anesthesia and in supine position under inhalant anesthesia, subsequently. Results: Under anesthesia, ears with effusion disclosed more changes in reflectivity (Chi-squared analysis, ?2-test; P<0.05) and curve angle (P>0.1) than those without effusion. Further, inhalant anesthesia caused more changes in the false negative ears (63.63%) than in those with effusion having positive test before anesthesia (12.90%) (P<0.001). Conclusions: From the data of this study, it could be said that reflectivity shows changes according to the amount of effusion which is in contact with the tympanic membrane under anesthesia, and that curve angle becomes more sensitive to detect effusion when anesthetic gas diffuses into the middle ear with effusion, probably due to the pushing of effusion towards the tympanic membrane. © 2003 Elsevier Science Ireland Ltd. All rights reserved

Urgency Priority in Kidney Transplantation: Experience in Turkey

WOS: 000357066800007PubMed ID: 26093696Background. In Turkey, according to the directions of National Organ and Tissue Transplant Coordination System, a system has been established since 2008 of urgency priority for kidney transplantation in cases with imminent lack of access for either hemodialysis or peritoneal dialysis. In this study, we compared patient and graft outcomes between patients on the national waiting list having urgency priority for kidney transplantation (UKT) and those having the other kidney from the same deceased donor (control group). Methods. We examined retrospective data of patients, who underwent transplantation under urgency priority allocation in Turkey from 2010 to 2014 and compared that group with other patients receiving kidney transplants from the same deceased donors (control group). Then we compared these patients for early and long-term patient and graft outcomes. Results. Forty-seven patients had UKT, and 40 patients received transplants from the same deceased donors. Mean follow-up of patients after transplantation was 18 12 months. Eight patients with UKT and 4 patients in the control group lost their grafts. At follow-up, 7 patients died in the UKT group, and 4 patients died in the control group. Patient survival in the UKT group was 90% at 1 year and 83% at 2 years, and in the control group was 93% at 1 year and 84% at 2 years (P = .384). Graft survival was 87% at 1 year and 81% at 2 years in UKT, and 91% at both 1 and 2 years in the control group (P = .260). Conclusions. Although patients with UKT showed lower graft and patient survivals than the control group, the difference was statistically nonsignificant. UKT can be an obligatory treatment model for patients with lack of vascular or peritoneal access for dialysis

Maxillomandibular advancement for obstructive sleep apnea.

: We aimed to present our clinical experience with maxillomandibular advancement (MMA) for the treatment of obstructive sleep apnea (OSA) syndrome and to compare our results with literature data

Evaluation of coronary microvascular function and nitric oxide synthase intron 4a/b polymorphism in patients with coronary slow flow

Objective Slow coronary flow (SCF) is reported to be associated with increased risk of cardiovascular disease. We have used coronary flow reserve measurement by transthoracic Doppler echocardiography to determine coronary microvascular function in patients with SCF and to determine whether the intron 4a/b polymorphism of the eNOS gene influences coronary endothelial function.Methods Overall, 96 patients with SCF and 79 controls were enrolled in the study. Coronary flow was quantified according to the thrombolysis in myocardial infarction (TIMI) frame count (TFC) on angiogram. Coronary diastolic peak flow velocities (DPFV) were measured with color Doppler flow mapping at baseline and after dipyridamole infusion. Coronary flow reserve was calculated as the ratio of hyperemic to baseline DPFV. The eNOS 4a/b polymorphism was detected by PCR. Patients with diabetes were excluded from the study.Results The SCF group was comparable to the control group in terms of demographic and clinical characteristics, except for hemoglobin and HDL-cholesterol levels, TFC of the left anterior descending artery, the circumflex artery, and the right coronary artery; the mean TFC was higher in the SCF group. Hyperemic DPFV and the hyperemic/baseline DPFV ratio were significantly lower in the SCF group when compared with the control group. However, baseline DPFV were similar in both groups. The number of patients with eNOS4 a/a and eNOS4 a/b phenotypes was statistically higher in SCF groups. The frequency of allele a' of the eNOS4 gene was also statistically higher in the SCF group. When patients were grouped according to the presence or absence of allele a' of the eNOS4 gene, statistically significant differences were found in the TFC of the left anterior descending artery, the circumflex artery; mean TFC; baseline DPFV; and hyperemic/baseline DPFV. Univariate analysis in which eNOS4 b/b was used as the referent group showed that the presence of allele a' of the eNOS4 gene significantly predicted SCF (odds ratio: 2.79, 95% confidence interval: 1.32-5.89; P=0.007). In multivariate analysis using a model adjusted for variables with a P value lower than 0.10 in univariate analyses, the presence of allele a' of the eNOS4 gene was found to be an independent predictor of SCF (odds ratio: 3.22, 95% confidence interval: 1.28-8.82; P=0.013).Conclusion The presence of allele a' may be a risk factor for microvascular endothelial dysfunction and higher TFCs in SCF patients