Dreyerravn0490

They began their training between 12 and 14 days after diagnosis. Eleven (45.8%) participated between 4 and 6 international matches of Libertadores de América International Cup. The remaining 13 completed high intensity training sessions and participated in local league competitions. At 4 months after diagnosis, none of the soccer players developed cardiac events and training and competitions were well tolerated. These findings suggest low cardiovascular impact of COVID 19 and excellent tolerance to early post-COVID high intensity exercise of young athletes recovering from the disease with no or mild symptoms.Chronic urticaria is a prevalent disabling dermatological disease. About 90%, are considered idiopathic and referred to as chronic spontaneous urticaria (CSU), and nearly half of them are likely to have autoimmune mechanisms. Regulatory T cells play a substantial role to prevent autoimmune diseases. Subsets of Tregs expressing the CD4+CD25high and forkhead-box-P3 (FOXP3) transcription factor, crucial for their development and function, are best characterized in maintenance of self-tolerance. The objective of this study was the analysis of peripheral CD4+CD25highFOXP3+(T regs) frequency in chronic spontaneous urticaria; and its possible association with autologous serum skin test (ASST). Fifty chronic spontaneous urticaria patients (25 with positive ASST and 25 with negative ASST) and 20 healthy controls were enrolled in this study. The frequency of CD4+CD25highFOXP3+ (T regs) was analyzed by flow cytometry. A Significant decrease in peripheral blood CD4+CD25highFOXP3+ T regs% was detected in CSU patients in comparison to healthy individuals (median [IQR], 1.47% [0.71-3.12] vs 1.79% [1.15-4.00]; P = 0.05). When ASST positive patients were compared with ASST negative patients, no significant difference was found in percentage of T regs, (P=0.112). In conclusion our data provided further insights into CSU pathogenesis. Reduced frequency of CD4+CD25highFOXP3+(Tregs) in patients with urticaria, support the notion that CSU is an immune mediated disease and may help researchers to develop a novel immunotherapy strategy.Vascular endothelial growth factor (VEGF) was described as a potentially important driver of systemic sclerosis (SSc) pathogenesis. Additionally, recent literature elucidated that vitamin D serum level was found to be significantly lower in SSc patients in comparison to healthy individuals. The aim of the current study was to evaluate serum level of VEGF and its correlation with clinical features and vitamin D level in systemic sclerosis (SSc) Egyptian patients. This current case control study included 30 female SSc patients and 20 healthy controls. VEGF level was measured by ELISA. Serum level of 25-OH vitamin D was measured by electrochemiluminescence. Nailfold video capillaroscopy and modified Rodnan skin score (mRSS) were assessed. Thirty SSc female patients were included in the study, 13 patients had diffuse cutaneous SSc. The mean age of the patients' group was 49.3±4.3years, and the mean serum VEGF level was 3445.9±1183 ng/dl. The mean serum level of vitamin D was 15.57±9.9ng/ml in SSc patients and 30.6±2.26 in the controls. There was a significant association between high level of VEGF and hypovitaminosis D. Serum level of VEGF positively correlated with nailfold capillaroscopy changes and mRSS. In conclusion, high level of VEGF is associated with hypovitaminosis D, suggesting a role of vitamin D in SSc pathogenesis. VEGF levels correlate positively with nailfold capillaroscopy changes and extent of skin involvement.NK group 2 member A (NKG2A) receptor transduces inhibitory signaling; suppressing NK and T-cell cytokine secretion and cytotoxic function. This study aimed to assess the expression of NKG2A inhibitory receptor on natural killer (NK) cells and CD8+ T lymphocytes in COVID-19 patients and correlate the results with disease severity defined according to the criteria established by the world health organization, in a trial to understand the immunological response towards COVID-19 infection. The study enrolled 30 COVID-19 patients classified into 2 groups that comprised 15 subjects each; moderate and severe based on clinical, radiological, and laboratory findings. Ten age and sex matched apparently healthy individuals were included in this study as a control group. About 1 ml EDTA anti-coagulated blood samples were collected for measuring expression of NKG2A/CD159a on CD56+ CD3- NK and CD3+CD8+ T cells by flow cytometry. selleck compound Results revealed that COVID-19 patients had significantly lower NK and CD8+ T cell counts compared to healthy subjects. Severe cases had significantly lower CD8+ T counts compared to moderate ones. Percentages of NK and CD8+T cells expressing NKG2A receptor were significantly higher in cases compared to controls. Comparison between severe and moderate cases revealed that although the percentages of NK cells expressing NKG2A receptor were not significantly higher in severe cases, the mean fluorescence intensity was significantly higher. The percentages of CD8 +T cells expressing NKG2A receptor were significantly higher in severe cases with higher mean fluorescence intensity. In conclusion, our results indicate that elevated NKG2A expression on cytotoxic lymphocytes correlates with disease severity in COVID-19 patients, and may serve as a potential marker for prognosis. Additionally, the blockade of NKG2A should be investigated as means of enhancing NK cell and cytotoxic T cells antiviral immunity in patients with severe COVID-19 infection.Human tumors including colorectal cancers (CRC) are often infiltrated by immune cells predominantly T lymphocytes especially regulatory T (Treg) cells expressing the forkhead box protein 3 (Foxp3). It has been suggested that CD25+CD4+Foxp3+ regulatory T cells (Tregs) might hamper effective immunosurveillance of emerging cancer cell. The aim of this study was to measure the frequency of total CD4+CD25+ Tregs & CD4+CD25+Foxp3+ subset of Treg cells in peripheral blood of Egyptian CRC patients and their correlation with the tumor stage, histopathology of the tumor and lymph node affection. A total of 31 CRC patients were enrolled in the study. The tumor was categorized using a TNM staging system. Peripheral blood samples were collected within the first 24 h of surgery. The frequency of total CD4+CD25+ Tregs & CD4+CD25+ Foxp3+ subset of Treg cells in peripheral blood mononuclear cells (PBMCs) were measured by flow cytometry and absolute count was determined. High frequency of Tregs was detected in cancer patients with distal margin involvement (44-48 cells/μL) compared with those with free distal margin (5-32 cells/μL). Similarly, higher frequency of Tregs were detected (16-44 cells/μL) in cancers with lymph node involvement compared with cancers without lymph node involvement (5-32 cells/μL). Higher frequency of CD4+CD25+Foxp3+ Tregs were found in mucinous adenocarcinomas than in other histopathological types, although both observations were statistically insignificant. The median value for total absolute lymphocyte count/ μL was 639, out of which CD4+CD25+ subset constituted 35 cells, and about half of this subset were Foxp3+Tregs. In conclusion, CD4+CD25+Foxp3+ Tregs may be a useful marker for predicting invasion, metastasis, and prognosis of colorectal cancer in Egyptian patients.Asthma is a common chronic illness among school children, where different cytokines, including IL-8 play a role in its pathogenesis. IL-8 induces chemotaxis and migration of immune cells, especially neutrophils to the site of inflammation. IL-8 level was significantly increased in sputum of severely asthmatic patients, but can it be linked to some asthma phenotypes. Our aim of the study was to detect the IL 8 gene expression in different asthma phenotypes and to determine its relation to asthma severity. This case control study included 320 subjects (160 asthmatic and 160 matched controls) aged from 5 to 16 years old in Beni-Suef governorate. IL-8 gene expression was assessed by a real-time quantitative reverse transcription-polymerase chain reaction (qRT-PCR) and studied regarding its level in cases versus controls and its relations to severity, phenotype and other laboratory parameters. IL-8 gene expression was statistically higher in asthmatic cases (P less then 0.001) and was significantly correlated to the phenotype (presence of other allergy as urticaria and drug eruption) and degree of asthma symptoms (r=0.869, P less then 0.001), FEV1(r=0.757, P less then 0.001) and serum IgE level (r=0.789, P less then 0.001). IL-8 gene expression level is increased with the degree of severity in asthmatic children and can be looked for in certain asthma phenotypes especially in presence of other atopic manifestation.Engineered cartilage derived from mesenchymal stromal cells (MSCs) always fails to maintain the cartilaginous phenotype in the subcutaneous environment due to the ossification tendency. Vascular invasion is a prerequisite for endochondral ossification during the development of long bone. As an oral antitumor medicine, Inlyta (axitinib) possesses pronounced antiangiogenic activity, owing to the inactivation of the vascular endothelial growth factor (VEGF) signaling pathway. In this study, axitinib-loaded poly(ε-caprolactone) (PCL)/collagen nanofibrous membranes are fabricated by electrospinning for the first time. Rabbit-derived MSCs-engineered cartilage is encapsulated in the axitinib-loaded nanofibrous membrane and subcutaneously implanted into nude mice. The sustained and localized release of axitinib successfully inhibits vascular invasion, stabilizes cartilaginous phenotype, and helps cartilage maturation. RNA sequence further reveals that axitinib creates an avascular, hypoxic, and low immune response niche. Timp1 is remarkably upregulated in this niche, which probably plays a functional role in inhibiting the activity of matrix metalloproteinases and stabilizing the engineered cartilage. This study provides a novel strategy for stable subcutaneous chondrogenesis of mesenchymal stromal cells, which is also suitable for other medical applications, such as arthritis treatment, local treatment of tumors, and regeneration of other avascular tissues (cornea and tendon).While tremendous progress has recently been made in perovskite light-emitting diodes (PeLEDs), large-area blue devices feature inferior performance due to uneven morphologies and vast defects in the solution-processed perovskite films. To alleviate these issues, a facile and reliable interface engineering scheme is reported for manipulating the crystallization of perovskite films enabled by a multifunctional molecule 2-amino-1,3-propanediol (APDO)-triggered "anchoring effect" at the grain-growth interface. Sky-blue perovskite films with large-area uniformity and low trap states are obtained, showing the distinctly improved radiative recombination and hole-transport capability. Based on the APDO-induced interface engineering, synergistical boost in device performance is achieved for large-area sky-blue PeLED (measuring at 100 mm2 ) with a peak external quantum efficiency (EQE) of 9.2% and a highly prolonged operational lifetime. A decent EQE up to 6.1% is demonstrated for the largest sky-blue device emitting at 400 mm2 .