Increased fat graft survival with mesenchymal stem cell recruiting effect of PRP: in vitro and in vivo study of application techniques

Aim: Adding platelet-rich plasm (PRP) or mesenchymal stem cells are the most accepted methods to increase fat graft’s permanence. However, there is no consensus on timing and whether the effect of stem cells or PRP is observed more in the recipient area or in the donor area. It is aimed to present the application method and localization of PRP to be combined with fat graft to increase the survival. Material and Methods: in vitro part: Fat grafts were kept in a medium containing PRP. Cell output from the fat graft to the Petri dishes was examined every day. The time to recruit the maximum number of stem cells to the medium was determined (day 10). in vivo part: Eight group of rats were received PRP in different concentrations either to recipient or donor areas of fat grafts. After ten days, fat grafts were transferred to the recipient area. Ninety days after the transfer, histopathological examination and immunohistochemical staining were performed. Results: The group which had received the full-dose PRP to the recipient area showed the highest cellular integrity and vascularity (p< 0.05). Vascularity was superior in the half-dose PRP group compared to the control group (p< 0.05); cellular integrity did not increase. Donor site groups did not show increase in cellular integrity. Conclusion: Although PRP starts to increase fat graft permanence by increasing vascularity, it acts by preserving the cellular integrity of the fat cells as the concentrations increase. The PRP injection to the recipient area 10 days before fat grafting may provide higher survival rates

Digital PID Temperature Controlled Laminator Test Kit Design and Production for Small & Medium Scale Photovoltaic Module Production

In this study, laminator design and production are realized for small & medium scale photovoltaic (PV) module production. The reliability of the energy to be supplied by the PV modules and / or the system is possible by being durable against external conditions and long life. This can be ensured by the protection provided by industrially mandatory lamination techniques. For the aim of the study, first, the solid model of the system is created using the Solidworks® program and the system is simulated for optimum production conditions. After this step, the components of the designed system are identified and aluminium plates are produced in CNC and assembled on the chassis. The temperature control is provided by the PID controller while the desired thermal distribution for lamination of the PV module layers is provided by cartridge resistors. The upper aluminium sheet with flexible membrane for vacuum and / or pressure procedures required for the lamination of the PV module components is positioned on the slide rails. Following completion of the design and assembly, cell matrices are constructed by connecting solar cells in series and / or parallel, and the system is tested for industrial performance. As a result, the digital PID temperature-controlled laminator test kit for PV module production will provide insight into the lamination processes in existing technologies and ensure that students at undergraduate / graduate level have the necessary knowledge and experience

Identifying of series resistance and interface states on rhenium/n-GaAs structures using C-V-T and G/omega-V-T characteristics in frequency ranged 50 kHz to 5 MHz (November, 10.1007/S10854-019-02578-1, 2019)

The original version of the article inadvertently published without the character omega ``omega{''} in all the places. This has been corrected by publishing this erratum. The original article has been corrected

Symmetric Dumbbell Ganglioneuroma of Bilateral C1 Roots With Intradural Extension Associated With Von Recklinghausen's Disease: A Case Presentation

Introduction: Ganglioneuromas are rare benign tumours arising most commonly from the sympathetic nervous system. They occasionally grow in a dumbbell fashion extending into the spinal canal extradurally. But, ganglioneuromas in association with von Recklinghausen's disease are rare

Effect of Caffeine on Vascular Smooth Muscle Cell Proliferation and Calcium Level

WOS: 000383578300041

Effect of Nicotine on The Smooth Muscle Cell Proliferation and Intracellular Calcium Levels

WOS: 000383578300071

The effect of exercises on left ventricular systolic and diastolic heart function in sedentary women: Step-aerobic vs core exercises

The purpose of this study is to investigate the effect of 16 weeks step-aerobic exercises and core exercises on left ventricular structure and function with some physiological parameters in sedentary women. Methods: To achieve the purpose of this study, a total of 45 volunteers including (step-aerobic group (SAG, n = 25), core exercise group (CEG, n = 20) were selected as participants. Two different exercises were applied for 4 days a week, throughout 16 weeks, within 60 minutes for each exercise with the intensity of heart rate (HR) 60-70 percent. The HR was measured using a heart rate monitor for each subject. The physical, biochemical and echocardiographic characteristics of the women were measured before and after the exercise. Results: During the exercise periods, there were a meaningful decrease in the body weight, BMI, value of waist region and hip circumference of the women in both intervention groups as well as in the values of HR, DBP, SBP (p < 0,05). In addition, serum homocysteine (Hcy) and high-sensitivity C-reactive protein (Hs-CRP) levels decreased and the VO2max and left ventricular diastolic end-diastolic dimension increased in both SAG and CEG (p < 0.05). The left ventricular diastolic functions of the SAG improved more than CEG. Left ventricular systolic ejection time and fractional shortening meaningfully improved in both SAG and CEG (p < 0.01). Conclusion: 16 weeks of step-aerobic and core exercise showed significant changes of inflammatory and lipid markers with cardiac dimensions and had favorable effects on both left ventricular systolic function. Left ventricular diastolic function had more improved in SAG than the CEG