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Change regarding electrospun Keratin/PVA nanofiber membranes in to multilayered Three dimensional Scaffolds: Physiochemical reports and cornael augmentation software.
The plausible nitric oxide (NO)-sensing module of TRPC5 was incorporated in a enhanced green fluorescent protein (EGFP) to evaluate its conformational change as an optical response upon the reaction with NO. Two cysteine residues located in the NO-sensing module have been proposed to form a disulfide bond through S-nitrosylation of the thiol group by NO. Modification of the cysteine residues by NO resulted a ratiometric change of EGFP emission through transducing the conformational change of NO-sensing module to the EGFP chromophore. The oxidized form of NO-sensing module fused EGFP changed the intensity of emission spectra upon reduction of the disulfide bond at the NO-reactive module. The NO-sensing module fused EGFP in its reduced form avidly reacted with NO and realized the ratiometric fluorescence intensity changes depending on the formation of disulfide bond. These results support the notion that NO induces a conformational change at the putative NO-sensing segment of TRPC5, and provide a prototype for the genetically encoded cellular NO sensors. Nonhuman primates (NHP) are important pre-clinical models for evaluation of the safety and efficacy of the most promising potential therapeutic advances in organ transplantation based on rodent studies. Although rare, dendritic cells (DC) play important roles in preservation of self tolerance and DC with immunoregulatory properties (regulatory DC; DCreg) can promote transplant tolerance in rodents when adoptively transferred to allograft recipients. NHP DCreg can be generated ex vivo from bone marrow precursors or blood monocytes of cynomolgus or rhesus macaques or baboons. NHP DCreg generated in the presence of anti-inflammatory factors that confer stability and resistance to maturation, subvert alloreactive T cell responses. When infused into rhesus renal allograft recipients before transplant, they safely prolong MHC mis-matched graft survival, associated with attenuation of anti-donor immune reactivity. In this concise review we describe the properties of NHP DCreg and discuss their influence on T cell responses, alloimmunity and organ transplant survival. BACKGROUND & AIMS For many decades diet, mainly its "pro-inflammatory" quality has been pondered as a possible risk factor for developing MS. However, the complexity of different dietary composition analysis provided controversial results. Recently a dietary inflammatory index (DII), a population-based score, was developed to objectify the inflammatory characteristics of a specific dietary intake. OSI-774 chemical structure METHODS We investigated the potential association between DII (expressed as energy adjusted-DII (E-DII) and non-energy adjusted DII (DII)) assessed from a validated FFQ based on the participants' diet habits during adolescence and the risk for developing MS in a population-based incident case-control study. Multiple logistic regression was used to estimate the adjusted. RESULTS We recruited 547 incident MS cases and 1057 general population controls from Tehran, Iran (August 2013-February 2015). A statistically significant higher risk of MS was found in analyses using E-DII scores as a continuous variable with an adjusted odds ratio (AOR) of 1.53 (95% confidence interval (CI) 1.42-1.65, P = 0.001), and as a categorical variable (4th quartile OR 7.01, 95% CI 4.87-10.1, vs the first quartile), test for trend; OR 1.86 (95% CI 1.67-2.07), P for trend less then 0.001. A similar pattern was demonstrated for DII score and risk for MS. CONCLUSIONS We identified a pro-inflammatory diet characterized by higher E-DII and DII scores during adolescence as a strong risk factor for MS onset. Given the worldwide role of diet in general population health, improving nutritional pattern through educational programs is likely to reduce MS risk. BACKGROUND The variation in the anatomic relationship between the coracoid and the clavicle affects the biomechanical stability of coracoclavicular ligament reconstruction (CCLR). link2 METHODS Three-dimensional computed tomography reconstruction of 85 patients was analyzed. Anatomic landmarks were used to derive the coracoclavicular sagittal reconstruction angle (sRA). The lateral concave angle, which indicated the shape of the distal clavicle, and the offsets between the clavicle and coracoid were also measured. To investigate the biomechanical effects of the sRA on CCLR, 7 computed tomography scans with different sRAs were 3D printed. Two reconstructions, a single trans-coracoclavicular tunnel and a looped reconstruction technique, were performed sequentially. link3 Models were cyclically loaded at 70 N in the anterior, posterior, and superior directions. RESULTS The mean sRA was 68° ± 9.3° (range, 47°-85°). The superoinferior offset between the clavicle and the coracoid and the lateral concave angle positively correlated with the sRA (r = 0.359 and 0.837, respectively; P ≤ .001), whereas the anteroposterior offset had a negative correlation (r = -0.925; P less then .001). The sRA had a negative correlation with the anterior displacement of the clavicle (rho = -0.96; P less then .001) and a positive correlation with the posterior displacement for both surgical techniques (rho = 1.0; P less then .001). CONCLUSION The anatomic orientation of the native coracoclavicular ligaments is highly variable in the sagittal plane. Low sagittal angles can reduce anterior stability, whereas high sagittal angles can reduce posterior stability of CCLR. HYPOTHESIS AND BACKGROUND Injuries to the elbow medial ulnar collateral ligament (mUCL) pose a diagnostic challenge, with the moving valgus stress test (MVST) currently accepted as the gold-standard clinical test. This study sought to biomechanically evaluate the change in length of the ulnar collateral ligament (UCL) during flexion-extension using a null hypothesis that the mUCL will not experience a greater change in length with movement than with static loading. METHODS Seven fresh-frozen human cadaveric elbows were tested with static and dynamic valgus stress. We measured (1) ligament length with a multi-camera optical system, (2) elbow flexion with an incremental encoder, and (3) valgus deviation with an electronic inclinometer. With a force applied to the wrist to simulate a clinical stress examination, the elbow was flexed and extended in a physiological elbow simulator to mimic the flexion and extension of the MVST. RESULTS The simulated MVST produced more elongation of the UCL compared with static stress testing (P less then .001). Ninety degrees of flexion produced the highest mean change, and the anterior and posterior bands demonstrated different length change characteristics. Comparison of dynamic flexion and extension showed a statistically significant difference in change in length The mUCL reached the greatest change during extension, with the greatest changes during extension near 90° of flexion. DISCUSSION AND CONCLUSION The MVST produces significantly more elongation of the mUCL than either a static test or a moving test in flexion. This study provides biomechanical evidence of the validity of the MVST as a superior examination technique for injuries to the UCL. BACKGROUND This study presents a new technique for assembling an all-suture anchor from existing medical products. The biomechanical characteristics of this self-made anchor (SMA) are compared with those of an industrially manufactured all-suture anchor. METHODS The SMAs were made from established medical products (FiberWire #2 and 2-mm FiberTape; Arthrex, Naples, FL, USA). Pretesting was performed in biphasic polyurethane foam blocks. In the next step, 10 SMAs and 10 industrially made anchors (IMAs; 1.8-mm double-loaded Y-Knot Flex all-suture anchor; ConMed Linvatec, Largo, FL, USA) were applied with an insertion tool and tested in fresh porcine femora using a servohydraulic testing system, with a preload of 10 N and a displacement rate of 12.5 mm/s. Pullout strength and failure mode were recorded. RESULTS The mean load at failure in the foam blocks was 459 ± 124 N in the SMA group and 538 ± 83 N in the IMA group. In porcine bone, failure occurred at 461 ± 102 N in the SMA group and 431 ± 135 N in the IMA group. The differences in pullout strength between the 2 types of anchor were not statistically significant, either in the foam blocks (P = .17) or in porcine bone (P = .62). CONCLUSION A handmade all-suture anchor using 2 high-strength sutures woven into a 2-mm strip of high-strength tape did not show statistically different failure loads in polyurethane foam or in porcine metaphyseal bone in comparison with a commercially produced double-loaded all-suture anchor. The principal mode of failure in porcine bone in both groups was anchor pullout. BACKGROUND The reconstructive options for instability-related anterior glenoid bone loss include iliac crest autograft, allograft, or coracoid transfer. The use of distal clavicle autograft (DCG) has also been described. The purpose of this imaging and cadaveric study was to examine the dimensions, morphology, and bone density of the DCG and compare it with the Latarjet procedure. METHODS We used 49 computed tomography scans from patients with anterior glenoid bone loss to measure the distal clavicle dimensions and bone density. Four glenoid reconstructions were simulated to compare techniques DCG inferior surface toward glenoid (DCG inferior), DCG superior, classic Latarjet, and congruent-arc Latarjet. In addition, the morphology of the DCG was assessed on computed tomography and confirmed in 27 cadavers. RESULTS The mean width of the DCG (11 mm) was significantly greater (P less then .001) than that of the classic Latarjet orientation (9 mm) but less (P = .002) than that of the congruent-arc orientation (12 mm). The DCG had a lower bone density than the coracoid (P less then .001). The mean articular surface area of the DCG-inferior orientation was 208 mm2, which was greater (P = .013) than that of the DCG-superior orientation (195 mm2) and not significantly different (P = .44) than that of the classic Latarjet orientation (214 mm2). The surface area of the congruent-arc orientation was greater (285 mm2, P less then .001) than that of all other graft orientations. The DCG-inferior orientation was able to reconstruct 22% of the glenoid articular surface; DCG-superior orientation, 21%; classic Latarjet orientation, 23%; and congruent-arc orientation, 30%. Three DCG morphologies were identified square (34%), trapezoidal (53%), and rounded (13%). CONCLUSIONS The distal clavicle osteoarticular graft was able to reconstruct 22% of the glenoid face. Three morphologies of the distal clavicle were identified, with the square and trapezoidal morphologies most amenable for glenoid reconstruction. BACKGROUND Video-based rehabilitation programs, which are also used in the treatment of neurological disorders, could be a beneficial treatment option for patients who cannot receive treatment. PURPOSE To determine the efficacy of video-based rehabilitation program in the conservative treatment of partial rotator cuff tears in comparison to a physiotherapist-supervised rehabilitation program. STUDY DESIGN A randomized controlled clinical trial. METHODS Thirty-three voluntary patients with partial rotator cuff tear were randomized into two groups video-based rehabilitation (VBR) group and physiotherapist-supervised rehabilitation (PSR) group, for a common 6 weeks rehabilitation program. After drop outs, thirty participants (mean ± SD age, 50.60 ± 8.54 years; 10 female) were finally completed the trial. Active shoulder range of motion, pain, functional status, and health-related quality of life of the patients were assessed before and after treatment. Also, treatment satisfaction level was assessed at the end of the treatment.
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