The effect of aortic wall and aortic leaflet stiffening on coronary hemodynamic: a fluid–structure interaction study

Pathologies of the aortic valve such as aortic sclerosis are thought to impact coronary blood flow. Recent clinical investigations have observed simultaneous structural and hemodynamic variations in the aortic valve and coronary arteries due to regional pathologies of the aortic valve. The goal of the present study is to elucidate this observed and yet unexplained phenomenon, in which a local pathology in the aortic valve region could potentially lead to the initiation or progression of coronary artery disease. Results revealed a considerable impact on the coronary flow, velocity profile, and consequently shear stress due to an increase in the aortic wall or aortic leaflet stiffness and thickness which concur with clinical observations. The cutoff value of 0.75 for fractional flow reserve was reached when the values of leaflet thickness and aortic wall stiffness were approximately twice and three times their normal value, respectively. Variations observed in coronary velocity profiles as well as wall shear stress suggest a possible link for the initiation of coronary artery disease.     

Neutrophil/platelet to lymphocyte ratio in monitoring of response to TNF‐α inhibitors in psoriatic patients

Neutrophil or platelet to lymphocyte ratio (NLR and PLR) has been proposed to be used as prognostic purposes in a variety of diseases. The aim of this study was to evaluate the usefulness of these ratios in monitoring of response to TNF‐α‐inhibitors in psoriatic patients. Eighty psoriatic patients were included and treated with TNF‐α‐inhibitors for 12 months based on drug protocol. Hematologic indices, including NLR and PLR values were assessed before and after treatment. Data on psoriasis area and severity index (PASI), smoking behavior, alcohol intake habit, nail abnormality, body mass index (BMI), joint involvement, and disease duration were also recorded. PASI scores were improved significantly after one‐year treatment (P = .000). Furthermore, this type of treatment significantly reduced the NLR and PLR (P = .000). These changes were in accordance with PASI scores. Patients with BMI greater than 24.9 had higher, but non‐significant NLR and PLR than normal or lean individuals. Cigarette smokers and alcohol consumers had lower NLR and PLR values than other individuals (P < .05). There was no significant association between NLR and PLR and joint or nail involvement. Although NLR and PLR will not be helpful in primary diagnosis of inflammatory diseases, they could be accounted as monitoring tools in management of psoriasis or globally indicators of inflammation.     

Maturational effect on physical capacities and anabolic hormones in under-16 elite footballers: a cross-sectional study

Sport Sciences for Health - The purposes of this study were to describe the fitness and hormonal levels according to playing time (PT) (i.e., PT during season less (PT1) or more (PT2) than 50% of...     

Methylprednisolone pulse therapy plus adjuvant therapy for pemphigus vulgaris: an analysis of 10 years' experience on 312 patients

Steroid pulse therapy has shown satisfactory efficacy and safety in treating pemphigus vulgaris (PV). However, there is a paucity of data about the efficacy and safety of methylprednisolone, despite its frequent administration. The aim of this study is to evaluate the efficacy and safety of steroid pulse therapy in treating PV. In this 10‐year retrospective cohort study, 312 patients with PV, who had received methylprednisolone pulse therapy, were included. Data of pulse therapy sessions, adjuvant medications, dosages, remission rates, complications, and mortalities were collected from all patients. A total of 276 patients out of 312 underwent the final follow‐up at least 6 months after the last session of pulse therapy. Complete remission off therapy was achieved in 83 patients (30%), and 152 patients (55%) had complete remission on therapy. About 29 (10.5%) patients had lesions of pemphigus at the time of the study follow‐up, and 26.8% of remained patients were on the minimal therapy. Methylprednisolone pulse therapy could be considered as an option for proper control of PV in severe cases. It might lead to shorter periods of hospitalization and reduce the need to take long‐term high‐dose oral steroid therapy.     

Hemorrhoid Disorder and Anal Intercourse: Is There a Solution?

Archives of Sexual Behavior -     

Improvement of aortic valve stenosis by ApoA-I mimetic therapy is associated with decreased aortic root and valve remodelling in mice

Background and Purpose

We have shown that infusions of apolipoprotein A-I (ApoA-I) mimetic peptide induced regression of aortic valve stenosis (AVS) in rabbits. This study aimed at determining the effects of ApoA-I mimetic therapy in mice with calcific or fibrotic AVS.

Experimental Approach

Apolipoprotein E-deficient (ApoE^−/−) mice and mice with Werner progeria gene deletion (Wrn^Δhel/Δhel) received high-fat diets for 20 weeks. After developing AVS, mice were randomized to receive saline (placebo group) or ApoA-I mimetic peptide infusions (ApoA-I treated groups, 100 mg·kg⁻¹ for ApoE^−/− mice; 50 mg·kg⁻¹ for Wrn mice), three times per week for 4 weeks. We evaluated effects on AVS using serial echocardiograms and valve histology.

Key Results

Aortic valve area (AVA) increased in both ApoE^−/− and Wrn mice treated with the ApoA-I mimetic compared with placebo. Maximal sinus wall thickness was lower in ApoA-I treated ApoE^−/− mice. The type I/III collagen ratio was lower in the sinus wall of ApoA-I treated ApoE^−/− mice compared with placebo. Total collagen content was reduced in aortic valves of ApoA-I treated Wrn mice. Our 3D computer model and numerical simulations confirmed that the reduction in aortic root wall thickness resulted in improved AVA.

Conclusions and Implications

ApoA-I mimetic treatment reduced AVS by decreasing remodelling and fibrosis of the aortic root and valve in mice.     

Mental health status among female sex workers in Tabriz,Iran

Female sex workers are a deprived part of Islamic communities. It is necessary for public health policy makers to have knowledge about their mental health status. This study aims to have an evaluation of mental health among female sex workers in Tabriz for the first time in northwest of Iran. In this cross-sectional study, 48 female sex workers who had accepted to be evaluated were included. Sociodemographic and general mental health statuses, using General Health Questionnaire (GHQ-28), were recorded. Those with GHQ-28 score more than 23/24 in the first session were thoroughly interviewed in a second session in order to find out their specific mental disorder, using Structured Clinical Interview for DSM-IV axis 1 and 2 Disorders (SCID 1 and 2). This study suggests that 62.5% of female sex workers suffer from a mental health problem which is in accordance with previous studies. Mood and anxiety disorder were two of the most common, and there were also records of personality disorders among participants of this survey. There were also high rates of addiction in female sex workers of this study. Based on findings of this study, high rates of mental disorders such as personality disorders, anxiety disorder, and mood disorder were detected among female sex workers in the northwest of Iran. Financial incentive was reported to be the primary motivation for choosing sex work as a source of income.

     

Control and Management of Pubic Lice,a Sexually Transmitted Infection,Using a Simple and Safe Method

Archives of Sexual Behavior -