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According to the International Diabetes Federation, approximately 425 million people worldwide suffer from diabetes mellitus, a figure that will double in the next 20 years. Data on the ratio of treated diabetics in burn intensive care units remain scarce and the effects on the mortality rate are poorly defined.Our retrospective, single-centre study aimed to evaluate differences in the risk factors due to diabetes mellitus, the clinical outcome and the patient population of diabetic patients after severe burn injuries over a time period of 21 years.Despite increasing numbers of diabetic patients, the ratio of burn patients suffering from diabetes remained stable during the study period. The risk factors for mortality were higher age (OR 1.03, 95% confidence interval (CI), 1.02-1.04, p 0.0001), female sex (OR 1.56, 95% CI, 1.06-2.29, p = 0.025), higher % total body surface area (TBSA) (OR 3.88, 95% CI, 2.81-5.46, p 0.0001), full thickness burns (OR 8.58, 95% CI, 3.84 - 23.60, p 0.0001) and the presence of inhalation injuries (OR 4.68, 95% CI, 3.15-7.02, p 0.0001) Patients with diabetes had a smaller extent of burned areas with a median TBSA of 30% (quartiles: 22-50%, p = 0.036) compared to non-diabetic patients (35% (25-55%)) but had a similar length of stay with a median of 29 (quartiles: 13-44) days vs. 23 (10-48) days. Outcome analysis showed an overall mortality of 35.6%. Diabetes was not associated with higher mortality rate after burn injury in a univariate model (OR 1.80, 95% CI 0.92-3.51). After correction for %TBSA, the effect of diabetes on mortality was significant (OR 2.80, 95% CI, 1.33-5.90).Our data indicate higher mortality rates (50-100%) of diabetic patients with TBSA greater than 40% in severely burned patients compared to non-diabetic patients without a significant outcome due to the low number of cases in the subgroup analyses.

Gender-affirming mastectomy is a fundamental step in the transition process of transmasculine patients following the initiation of hormone replacement therapy. Its perioperative management, however, remains underreported and controversial. In this study, a large series of mastectomies in transmen maintaining hormonal therapy is presented.Over a 10-year study period, a consecutive series of 180 transmasculine patients undergoing chest masculinizing surgery was evaluated. Demographical and surgical data were collected and analyzed for potential factors influencing outcome.The overall rate of complications was 15.5%. Patients who underwent periareolar incision mastectomy were significantly more likely to develop any type of complication than patients with a sub-mammary incision (28.6% vs. 13.2%, p = 0.045). Hematoma was the most common reason for surgical revision. It occurred significantly more often among the periareolar group (21.4% vs. 7.9%, p = 0.041). Duration and type of hormonal therapy did not differ between patients with or without complications. In a multivariate regression analysis, smoking and type of incision were identified as significant predictors of the all-cause complication rate, whereas the influence of BMI and resection weight diminished after adjusting for confounding factors.There is scarcity of information concerning the influence of perioperative hormonal therapy in patients undergoing chest wall masculinization. The observed complication rates-with special regard to hematoma-were comparable to current reports; yet further research is needed to profoundly evaluate this topic and provide evidence-based recommendations for the perioperative management of HRT of transmasculine patients.This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors http://www.springer.com/00266 .

BACKGROUND The nose is at the center of the face and has essential functional and aesthetic properties. Over recent years, rhinoplasty has gained increasing popularity through the influence of "selfies" and social media. As a result, a growing demand for secondary correction has also emerged. Revision rhinoplasty is more complex than primary cases and often requires the use of extranasal grafting material. The authors sought to analyze the indications, techniques, and outcomes after primary and revision rhinoplasty. METHODS A total of 245 patients (153 primary cases and 92 revisions) undergoing surgery at the authors' specialized clinic for facial plastic surgery were included. All patients were treated by an experienced facial plastic surgeon according to the authors' established clinic standards. A retrospective data analysis was performed to evaluate the differences between the groups regarding the indications, intraoperative techniques, and postoperative outcomes. RESULTS Although more patients sought revision surgery for aesthetic reasons alone than isolated functional issues, almost two-thirds of the revision patients had functional and aesthetic problems in combination. Complex reconstructive techniques, extracorporeal septoplasties, and extranasal grafts were more commonly used in revision cases. The occurrence of another revision during the follow-up period was significantly higher after revision surgery compared to primary rhinoplasty cases (primary rhinoplasty, 10.5 percent; revision surgery, 23.9 percent; p = 0.006). CONCLUSIONS There are differences between primary and revision rhinoplasty that must be appreciated by the treating surgeon. The patient should be informed about the increased complexity of the secondary procedure, the possible need for extranasal grafts, and the increased risk of a further revision. CLINICAL QUESTION/LEVEL OF EVIDENCE Therapeutic, IV.

Due to its cost-efficiency, high resolution melting (HRM) analysis plays an important role in genotyping of candidate single nucleotide polymorphisms (SNPs). Studies indicate that HRM analysis is not only suitable for genotyping individual SNPs, but also allows genotyping of multiple SNPs in one and the same amplicon, although with limited discrimination power. By targeting the three C>T SNPs rs527559815, rs547832288, and rs16906252, located in the promoter of the O6-methylguanine-DNA methyltransferase (MGMT) gene within a distance of 45 bp, we investigated whether the discrimination power can be increased by coupling HRM analysis with pyrosequencing (PSQ). After optimizing polymerase chain reaction (PCR) conditions, PCR products subjected to HRM analysis could directly be used for PSQ. By analyzing oligodeoxynucleotide controls, representing the 36 theoretically possible variant combinations for diploid human cells (8 triple-homozygous, 12 double-homozygous, 12 double-heterozygous and 4 triple-heterozygous combinations), 34 out of the 36 variant combinations could be genotyped unambiguously by combined analysis of HRM and PSQ data, compared to 22 variant combinations by HRM analysis and 16 variant combinations by PSQ. Our approach was successfully applied to genotype stable cell lines of different origin, primary human tumor cell lines from glioma patients, and breast tissue samples.

ObjectivesBurn injuries elicit a unique and dynamic stress response which can lead to burn injury progression. Though neutrophils represent crucial players in the burn-induced immunological events, the dynamic secretion pattern and systemic levels of neutrophil-derived factors have not been investigated in detail so far.MethodsSerum levels of neutrophil elastase (NE), myeloperoxidase (MPO), citrullinated histone H3 (CitH3), and complement factor C3a were quantified in burn victims over 4 weeks post injury. Furthermore, the potential association with mortality, degree of burn injury, and inhalation trauma was evaluated. In addition, leukocyte, platelet, neutrophil, and lymphocyte counts were assessed. Lastly, we analyzed the association of neutrophil-derived factors with clinical severity scoring systems.ResultsSerum levels of NE, MPO, CitH3, and C3a were remarkably elevated in burn victims compared to healthy controls. Leukocyte and neutrophil counts were significantly increased on admission day and day 1, while relative lymphocytes were decreased in the first 7 days post burn trauma. Though neutrophil-derived factors did not predict mortality, patients suffering from 3rd degree burn injuries displayed increased CitH3 and NE levels. Accordingly, CitH3 and NE were elevated in cases with higher abbreviated burn severity indices (ABSI).ConclusionsTaken together, our data suggest a role for neutrophil activation and NETosis in burn injuries and burn injury progression. Targeting exacerbated neutrophil activation might represent a new therapeutic option for severe cases of burn injury.

Treatment of ruptured ulnar collateral thumb metacarpophalangeal (MCP) joint ligaments (UCL) necessitate a profound anatomic knowledge for optimal surgical repair in order to preserve range of motion and ensure postoperative joint stability. Therefore, knowledge of the angle between the UCL and the longitudinal axis of the first metacarpal bone could be useful. In this study 46 ulnar collateral thumb MCP joint ligaments in 15 male and 15 female embalmed anatomic specimens were dissected and the angles between the longitudinal axis of the first metacarpal bone and the proper (PUCL) as well as the accessory ulnar collateral thumb MCP ligament (AUCL) were measured. In male specimens the angle for the PUCL measured on average 133.5° (±2.35°) and 122.75° (±3.8°) for the AUCL. A significantly different angle was measured for female specimens which showed on average 137.88° (±3.51°) for the PUCL and 128.65° (±4.14°) for the AUCL. Optimal surgical repair or reconstruction of torn ulnar collateral thumb MCP joint ligaments should aim for an angle of approximately 135° in PUCL and 126° in AUCL in relation to the longitudinal axis of the metacarpal bone. Differences in men and women should be considered if possible. IV (anatomic study).

According to the ABSI - Abbreviated Burn Severity Index - women exhibit an increased risk of succumbing to burn injuries. In contrast, following non-thermal trauma, increased mortality has been shown for the male gender. Therefore, the purpose of this study was to evaluate gender-specific differences among burn patients with special regard to burn mortality.We retrospectively studied 839 patients who were admitted to the Burn Intensive Care Unit (BICU) and underwent surgical treatment between June 1994 and December 2014. In-hospital mortality was the main clinical endpoint. Odds ratios (ORs) were calculated using univariate and multivariate logistic regression models for the association between sex and mortality.In total, we included 530 male and 309 female burn patients. All patients had at least partial-thickness burns and underwent one or more operative procedures. Women were significantly older than men (mean 60.0 years vs 46.2 years; p0.001). Despite having smaller injuries (24.6% vs 30.3% total body surface area (TBSA); p0.001), burn mortality among women significantly differed from that of men (27.8% vs 21.7%; OR 1.39, p=0.045, 95% CI 1.01-1.92). This association, however, did not persist after adjusting for age, %TBSA, inhalation injury and full-thickness burns (OR 1.07, p=0.77, 95% CI 0.68-1.70).Despite increasing research directed at women's health, the assoziation between gender and burn mortality has yielded conflicting results. This study does not support a gender-specific difference in burn mortality in our study population.

The importance of a straight and stable central framework is beyond dispute. Many authors allude to technical aspects how to achieve the above-mentioned requirements. Far less is said about the contact zones of the framework and how to achieve a long-lasting and solid fixation. In the authors' patient group, they found the need to work on the septum/the central framework in approximately 84% of the cases. In 61% of the patients, the authors had to operate on the fixation point. Of course, there is a great variety of anatomical findings. So the required techniques differ immensely. The surgeon must be prepared for all kinds of different situations. Especially the dorsal fixation and the anchoring on the maxilla without having a standard anterior nasal spine can be a great challenge. In their daily routine, suture techniques (e.g., the transcutaneous transosseous cerclage suture) have become the authors' working horse for these complex fixation situations.

Background: Large burn injuries induce a systemic response in affected patients. Soluble ST2 (sST2) acts as a decoy receptor for interleukin-33 (IL-33) and has immunosuppressive effects. sST2 has been described previously as a prognostic serum marker. Our aim was to evaluate serum concentrations of sST2 and IL-33 after thermal injury and elucidate whether sST2 is associated with mortality in these patients. Methods: We included 32 burn patients (total body surface area [TBSA] >10%) admitted to our burn intensive care unit and compared them to eight healthy probands. Serum concentrations of sST2 and IL-33 were measured serially using an enzyme-linked immunosorbent assay (ELISA) technique. Results: The mean TBSA was 32.5%±19.6%. Six patients (18.8%) died during the hospital stay. Serum analyses showed significantly increased concentrations of sST2 and reduced concentrations of IL-33 in burn patients compared to healthy controls. In our study cohort, higher serum concentrations of sST2 were a strong independent predictor of mortality. Conclusions: Burn injuries cause an increment of sST2 serum concentrations with a concomitant reduction of IL-33. Higher concentrations of sST2 are associated with increased in-hospital mortality in burn patients.

Purpose As critical parameter after extravasation of cytotoxic vesicants, anthracyclines were determined in removed tissue from patients requiring surgical intervention due to tissue necrosis. We monitored their distribution within the affected lesion to establish a possible dose–toxicity relation. Methods From six patients scheduled for surgery, removed tissue flaps were systematically analysed by HPLC (epirubicin: 5 subjects; doxorubicin: 1 subject). Results After extravasation, tissue concentrations were highly variable with an individual anthracycline distribution pattern ranging from a few nanograms up to 17 µg per 100 mg tissue, which indicated a substantial difference in tissue sensitivity among patients. The resection borders coincided with the extension of the erythema and guided the surgical intervention after demarcation of the lesion, which occurred usually 2 or 3 weeks after extravasation. At that time, drug was hardly detected at the resection borders. Wound drains were negative for the extravasated drugs while showing a time profile of vascular growth factors and inflammatory cytokines, which was highly similar to routine surgery. In all six patients, surgical debridement with immediate wound closure led to healing within approximately 2 weeks, when therapy was resumed in all patients with reasonable time delay. Conclusion Surgical intervention after demarcation of the extravasation lesion allows for almost uninterrupted continuation of treatment independent of the amount of extravasated anthracycline. As even minor amounts of the vesicants may trigger tissue necrosis, preventive measures merit the highest priority.

Background Even today, severe septal deformities are a challenging problem for any rhinoplasty surgeon. Standard techniques are often not able to achieve satisfactory long-term results regarding function or aesthetic form. In such severe cases, a partial or total extracorporeal septal reconstruction may be used, as these techniques provide reliable and lasting results. Methods The aim of this work is to present the authors' experience with the technique of total extracorporeal septal reconstruction and its development to today's standard and to prove its effectiveness in the long-term follow-up. Results This article presents 40 years of clinical experience in this field and describes the technical changes that have evolved. Low complication rates, safe techniques, and favorable long-term outcomes of the total extracorporeal septal reconstruction show the benefits of this technique. Conclusion The indication for a total extracorporeal septal reconstruction has been limited by the development of less complex surgical procedures, but it still represents the best technique to achieve long-term functional and aesthetic results in patients with very complex septal deformities. Clinical question/level of evidence Therapeutic, V.

Reconstructive surgery transfers viable tissue to cover defects and to restore aesthetic and functional properties. Failure rates after free flap surgery range from 3 to 7%. Co‐morbidities such as diabetes mellitus or peripheral vascular disease increase the risk of flap failure up to 4.5‐fold. Experimental therapeutic concepts commonly use a monocausal approach by applying single growth factors. The secretome of γ‐irradiated, stressed peripheral blood mononuclear cells (PBMCsec) resembles the physiological environment necessary for tissue regeneration. Its application led to improved wound healing rates and a two‐fold increase in blood vessel counts in previous animal models. We hypothesized that PBMCsec has beneficial effects on the survival of compromised flap tissue by reducing the necrosis rate and increasing angiogenesis. Surgery was performed on 39 male Sprague–Dawley rats (control, N = 13; fibrin sealant, N = 14; PBMCsec, N = 12). PBMCsec was produced according to good manufacturing practices (GMP) guidelines and 2 ml were administered intraoperatively at a concentration of 2.5 × 107 cells/ml using fibrin sealant as carrier substance. Flap perfusion and necrosis (as percentage of the total flap area) were analyzed using Laser Doppler Imaging and digital image planimetry on postoperative days 3 and 7. Immunohistochemical stainings for von Willebrand factor (vWF) and Vascular Endothelial Growth Factor‐receptor‐3 (Flt‐4) were performed on postoperative day 7 to evaluate formation of blood vessels and lymphatic vessels. Seroma formation was quantified using a syringe and flap adhesion and tissue edema were evaluated clinically through a cranial incision by a blinded observer according to previously described criteria on postoperative day 7. We found a significantly reduced tissue necrosis rate (control: 27.8% ± 8.6; fibrin: 22.0% ± 6.2; 20.9% reduction, p = .053 vs. control; PBMCsec: 19.1% ± 7.2; 31.1% reduction, p = .012 vs. control; 12.9% reduction, 0.293 vs. fibrin) together with increased vWF+ vessel counts (control: 70.3 ± 16.3 vessels/4 fields at 200× magnification; fibrin: 67.8 ± 12.1; 3.6% reduction, p = .651, vs. control; PBMCsec: 85.9 ± 20.4; 22.2% increase, p = .045 vs. control; 26.7% increase, p = .010 vs. fibrin) on postoperative day 7 after treatment with PBMCsec. Seroma formation was decreased after treatment with fibrin sealant with or without the addition of PBMCsec. (control: 11.9 ± 9.7 ml; fibrin: 1.7 ± 5.3, 86.0% reduction, 0.004 vs. control; PBMCsec: 0.6 ± 2.0; 94.8% reduction, p = .001 vs. control; 62.8% reduction, p = .523 vs. fibrin). We describe the beneficial effects of a secretome derived from γ‐irradiated PBMCs on tissue survival, angiogenesis, and clinical parameters after flap surgery in a rodent epigastric flap model.

Partial penectomy (glansectomy with/or without distal corporectomy) is an acceptable alternative for smaller distal pT3 penile carcinoma lesions in highly motivated and compliant patients. The authors describe a novel technique of neo-glans reconstruction using a tunica vaginalis (TV) testis allograft. However, due to an unclear resection margin on final histology, the patient underwent re-do surgery with a neo-glans revision using the well-established mesh split-thickness skin graft (STSG) technique. The penile length was preserved and the penile and bulbar part of the urethra was additionally mobilised in order to obtain a natural and aesthetic result for the meatus. Neo-glans reconstruction with TV coverage may be another promising alternative, which certainly requires further evaluation. We believe that the donor-site associated morbidity is minimal when compared to other harvesting sites. However, this is just an assumption, because direct comparison data on grafting techniques and neo-glans reconstruction are not available. Nevertheless, we think that for re-do procedures a standardised approach using a STSG technique should be the treatment method of choice.

// Melanie Spitzwieser 1 , Christine Pirker 2 , Bettina Koblmuller 2 , Georg Pfeiler 3 , Stefan Hacker 4 , Walter Berger 2 , Petra Heffeter 2 , Margit Cichna-Markl 1 1 Department of Analytical Chemistry, University of Vienna, Vienna, Austria 2 Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center of the Medical University, Medical University of Vienna, Vienna, Austria 3 Department of Obstetrics and Gynecology, Division of Gynecology and Gynecological Oncology, Medical University of Vienna, Vienna, Austria 4 Department of Plastic and Reconstructive Surgery, Medical University of Vienna, Vienna, Austria Correspondence to: Margit Cichna-Markl, email: margit.cichna@univie.ac.at Keywords: ABC transporter, multidrug resistance, DNA methylation, bisulfite pyrosequencing, breast cancer Received: June 29, 2016 Accepted: September 19, 2016 Published: September 28, 2016 ABSTRACT Overexpression of ABCB1, ABCC1 and ABCG2 in tumor tissues is considered a major cause of limited efficacy of anticancer drugs. Gene expression of ABC transporters is regulated by multiple mechanisms, including changes in the DNA methylation status. Most of the studies published so far only report promoter methylation levels for either ABCB1 or ABCG2 , and data on the methylation status for ABCC1 are scarce. Thus, we determined the promoter methylation patterns of ABCB1, ABCC1 and ABCG2 in 19 human cancer cell lines. In order to contribute to the elucidation of the role of DNA methylation changes in acquisition of a multidrug resistant (MDR) phenotype, we also analyzed the promoter methylation patterns in drug-resistant sublines of the cancer cell lines GLC-4, SW1573, KB-3-1 and HL-60. In addition, we investigated if aberrant promoter methylation levels of ABCB1, ABCC1 and ABCG2 occur in tumor and tumor-surrounding tissues from breast cancer patients. Our data indicates that hypomethylation of the ABCC1 promoter is not cancer type-specific but occurs in cancer cell lines of different origins. Promoter methylation was found to be an important mechanism in gene regulation of ABCB1 in parental cancer cell lines and their drug-resistant sublines. Overexpression of ABCC1 in MDR cell models turned out to be mediated by gene amplification, not by changes in the promoter methylation status of ABCC1 . In contrast to the promoters of ABCC1 and ABCG2 , the promoter of ABCB1 was significantly higher methylated in tumor tissues than in tumor-adjacent and tumor-distant tissues from breast cancer patients.

BACKGROUND Split-thickness skin grafting is the gold standard to cover extensive acute and chronic wounds with a well-vascularized wound bed. Although some headway has been made in developing biological agents to speed up healing, there is still no treatment that sufficiently replaces skin grafts to date. The use of secretory factors of adipose tissue may be a feasible approach to developing topical wound applications for faster wound healing. METHODS In this study, the effect of conditioned media (CMs) of human adipose-derived stem cells (ASCs), adipocytes, or adipose tissue on human skin cells was evaluated for viability, proliferation, and migration in vitro. Differentiation potential of stem cells treated with CM was monitored by AdipoRed staining and qualitative real-time polymerase chain reaction. Angiogenic potential of human endothelial cells treated with CM was tested via sprouting assay. RESULTS The CM of adipose tissue significantly enhanced ASC proliferation (P < 0.01). Treatment with CM showed no inductive effect on ASC differentiation into adipocytes but, at the same time, significantly induced cell sprouting of endothelial cells (P < 0.001). We show for the first time that CM of adipose tissue is a potent inducer of proliferation of ASCs and angiogenesis, with comparable effects with those of stem cell-enriched CM. CONCLUSIONS We suggest the use of the secretome of adipose tissue to produce CM for topical application on wounds, rather than working with adipose tissue or including the difficult process of enriching the patients' stem cells in vitro.

BACKGROUND Hypothenar hammer syndrome is a rare vascular lesion of the distal ulnar artery in Guyon tunnel caused by acute or repetitive blunt trauma to the hypothenar eminence. Described treatment options vary greatly, from nonoperative management treatments to surgical interventions. The aim of this study was to evaluate the long-term outcomes of patients after surgical reconstruction of the ulnar artery. METHODS In this retrospective study, the results of 12 patients treated for hypothenar hammer syndrome were evaluated. Preoperative and postoperative examinations of the hand were recorded. Function impairment was assessed with the "Disabilites of the Arm, Shoulder and Hand" questionnaire. Comparisons were also made based on ulnar artery patency versus occlusion. All patients were evaluated for ulnar artery patency as determined by Allen's test and magnetic resonance angiography. RESULTS All patients were men with an average age of 42.8 years. In 3 patients, a direct end-to-end anastomosis of the ulnar artery was performed, and 9 patients received a reconstruction with a reverse interpositional vein graft. Nine vascular reconstructions remained patent after a mean follow-up period of 56.9 months. These patients had a complete or at least partial relief of their pain, dysesthesia, and cold intolerance compared with preoperatively. Patients with reoccluded ulnar arteries were statistically significant younger (P = 0.036) than patients with patent ulnar artery. They also had a higher pain level (P = 0.009) and a longer follow-up period (P = 0.036) than those with patent reconstruction. There was a trend for higher functional impairment in patients with reoccluded ulnar artery (P = 0.100). Smoking habits showed no influence on ulnar artery patency. CONCLUSIONS For patients with symptomatic hypothenar hammer syndrome and failed nonoperative treatment, surgical intervention is a good option. After more than 4.5 years after surgery 9 of 12 vascular reconstructions remained patent (75% patency rate), ensuring an immediate and long-term improvement of symptoms.

The demand for high-bandwidth, low-latency services is rapidly increasing. Content Distribution Networks (CDNs) have addressed this by providing content from within or close to the Internet Service Provider (ISP). Still, the most common bottleneck for high service quality is the 'last mile' between ISP and end user. Serving content from small caches on end-user devices promises to increase service quality of the respective content. Similarly, fog computing promises to provide low-latency services from arbitrary nodes within the network. Both require additional functionality provided by network functions virtualization (NFV), redirecting traffic to the appropriate destinations. Still, the cost and performance of possible solutions are not well analyzed. Hence, this paper analyzes the forwarding and computing performance of a number of single-board computers (SBCs) from which models for the performance and energy cost of different loads are derived. Furthermore, the development of energy efficiency gains over the last years is analyzed, confirming Koomey's law also for SBCs, leading to an increase of computational efficiency by a factor of 5.5 to 7.5 over the course of four years, which relates to a doubling time of 1.62 years.

BACKGROUND The latissimus dorsi muscle flap represents a valuable option in breast reconstruction but can result in postoperative twitching and retraction, discomfort, arm movement limitations, and breast deformation. These complications can be avoided by denervation of the thoracodorsal nerve; however, the optimal method of nerve management is unknown. This study presents the authors' experience with the outcomes of latissimus dorsi flaps for breast reconstruction in the light of thoracodorsal nerve management strategies. METHODS The authors retrospectively collected data from 74 patients who underwent partial or total breast reconstruction with a latissimus dorsi flap alone or with an implant between January of 1999 and October of 2011. Follow-up data were collected at 12 and 24 months postoperatively. RESULTS In 56 patients (75.7 percent), the latissimus dorsi muscle was denervated at the time of surgery, whereas the thoracodorsal nerve remained intact in 18 patients (24.3 percent). No partial or total flap loss was observed. At 12 and 24 months' follow-up, all patients with an intact thoracodorsal nerve showed twitching of the muscle, and 50 percent and 67.9 percent, respectively, of the denervated patients showed twitching (p < 0.001). No patient had twitching if more than 4 cm of nerve was excised at 12 or 24 months postoperatively, and the length of nerve resection was predictive of the presence of twitching. CONCLUSION Denervation of the latissimus dorsi is a safe and reliable procedure that should be performed at the time of breast reconstruction and should include more than 4 cm to achieve a nontwitching breast with a stable volume and shape.

Aims Supernatants of serum-free cultured mononuclear cells (MNC) contain a mix of immunomodulating factors (secretome), which have been shown to attenuate detrimental inflammatory responses following myocardial ischaemia. Inflammatory dilated cardiomyopathy (iDCM) is a common cause of heart failure in young patients. Experimental autoimmune myocarditis (EAM) is a CD4+ T cell-dependent model, which mirrors important pathogenic aspects of iDCM. The aim of this study was to determine the influence of MNC secretome on myocardial inflammation in the EAM model. Methods and results BALB/c mice were immunized twice with an alpha myosin heavy chain peptide together with Complete Freund adjuvant. Supernatants from mouse mononuclear cells were collected, dialysed, and injected i.p. at Day 0, Day 7, or Day 14, respectively. Myocarditis severity, T cell responses, and autoantibody formation were assessed at Day 21. The impact of MNC secretome on CD4+ T cell function and viability was evaluated using in vitro proliferation and cell viability assays. A single high-dose application of MNC secretome, injected at Day 14 after the first immunization, effectively attenuated myocardial inflammation. Mechanistically, MNC secretome induced caspase-8-dependent apoptosis in autoreactive CD4+ T cells. Conclusion MNC secretome abrogated myocardial inflammation in a CD4+ T cell-dependent animal model of autoimmune myocarditis. This anti-inflammatory effect of MNC secretome suggests a novel and simple potential treatment concept for inflammatory heart diseases.

Video constitutes the majority of traffic in ISP networks. The demand for more and higher quality videos is growing rapidly while network capacities are limited. Today, OTT video is mostly delivered over CDNs. For ISP-internal video such as IPTV channels, IP multicast provides an efficient delivery method. However, this does not scale for OTT videos due to their large number and their Zipf-distributed popularity. SDN-based multicast enables ISPs to deliver content based on efficient network-level multicast. However, so far this concept has not been applied for OTT Video-on-Demand (VoD) scenarios. To this end, this paper's contribution is threefold. First, a novel network-based multicast approach for OTT VoD delivery is presented, named VoDCast. Second, trace-based network simulations are designed and conducted. Third, the achievable bandwidth reduction and practicability of VoDCast is shown based on a two-week YouTube trace of a nation-wide mobile provider. VoDCast is able to decrease traffic volume and variance, while keeping network provider costs in terms of state overhead and state change low.

Background Breast carcinogenesis is a multistep process involving genetic and epigenetic changes. Tumor tissues are frequently characterized by gene-specific hypermethylation and global DNA hypomethylation. Aberrant DNA methylation levels have, however, not only been found in tumors, but also in tumor-surrounding tissue appearing histologically normal. This phenomenon is called field cancerization. Knowledge of the existence of a cancer field and its spread are of clinical relevance. If the tissue showing pre-neoplastic lesions is not removed by surgery, it may develop into invasive carcinoma. Methods We investigated the prevalence of gene-specific and global DNA methylation changes in tumor-adjacent and tumor-distant tissues in comparison to tumor tissues from the same breast cancer patients (n = 18) and normal breast tissues from healthy women (n = 4). Methylation-sensitive high resolution melting (MS-HRM) analysis was applied to determine methylation levels in the promoters of APC, BRCA1, CDKN2A (p16), ESR1, HER2/neu and PTEN, in CDKN2A exon 2 and in LINE-1, as indicator for the global DNA methylation extent. The methylation status of the ESR2 promoter was determined by pyrosequencing. Results Tumor-adjacent and tumor-distant tissues frequently showed pre-neoplastic gene-specific and global DNA methylation changes. The APC promoter (p = 0.003) and exon 2 of CDKN2A (p

This paper presents a workflow for integrating Docker-based applications with the RPM and Debian packaging environment as well as the systemd init system to form an integrated solution, shielding users from the complexities of containerization. As an additional benefit, the Dockerspecific separation of application and surrounding host allows application developers to focus on a single deployment platform rather than having to deal with sometimes subtle differences between target platforms, particularly on the side of dynamic libraries.

Background Body contouring surgery after massive weight loss remains a fast growing field due to the rising number of postbariatric surgery patients, and it can improve patients' quality of life substantially. Patient expectations in these procedures are very high, but only little is known as to whether these procedures have a long lasting influence on body image, patient satisfaction, and quality of life. Setting University hospital, Austria. Methods We evaluated 40 consecutive female patients who underwent a lower body lift between 2009 and 2013. Patients took part in a prospective pre- and postoperative questionnaire survey inquiring about their psychological and physical wellbeing. The mean postoperative follow up interval was 61±14 months. We used 2 validated (Body Image Questionnaire and Body Appraisal Inventory) and one self-designed questionnaires (body lift follow-up questionnaire). The postoperative response rate in January 2016 was 72.5%. Results Lower body lift significantly reduced dismissive body ratings and increased long-term feelings of attractiveness and self-esteem, and significantly reduced discomfort associated with excess skin. Patients reported feeling happier, more attractive, and more self-confident. The procedure enhanced their physical wellbeing, even years after surgery. Conclusion Lower body lift satisfied patients' expectations and improved long-term quality of life. Therefore, it is an essential component in the treatment of patients who have experienced massive weight loss.

Burn wounds pose a serious threat to patients and often require surgical treatment. Skin grafting aims to achieve wound closure but requires a well-vascularized wound bed. The secretome of peripheral blood mononuclear cells (PBMCs) has been shown to improve wound healing and angiogenesis. We hypothesized that topical application of the PBMC secretome would improve the quality of regenerating skin, increase angiogenesis, and reduce scar formation after burn injury and skin grafting in a porcine model. Full-thickness burn injuries were created on the back of female pigs. Necrotic areas were excised and the wounds were covered with split-thickness mesh skin grafts. Wounds were treated repeatedly with either the secretome of cultured PBMCs (SecPBMC), apoptotic PBMCs (Apo-SecPBMC), or controls. The wounds treated with Apo-SecPBMC had an increased epidermal thickness, higher number of rete ridges, and more advanced epidermal differentiation than controls. The samples treated with Apo-SecPBMC had a two-fold increase in CD31+ cells, indicating more angiogenesis. These data suggest that the repeated application of Apo-SecPBMC significantly improves epidermal thickness, angiogenesis, and skin quality in a porcine model of burn injury and skin grafting.

Background The function of skin mast cells has been well documented in IgE-mediated allergic reactions, whereas other mast cell functions are poorly defined. This study aimed at identifying novel mast cell proteins by proteome analysis of primary human skin mast cells. Methods The proteome of skin mast cells was compared to other cell types and analyzed using bioinformatics. The expression and function of two proteins hitherto not described in skin mast cells was investigated in isolated mast cells as well as in mast cells in situ. Results Within the mast cell proteome, we identified 49 highly expressed proteins previously not described in mast cells; 21 of these proteins were found to be selectively expressed in mast cells. Two proteins, the neural cell adhesion molecule L1 and dipeptidyl peptidase 4, were further studied. L1 was found to be highly expressed in mast cells in normal, psoriasis, and mastocytosis skin. Dipeptidyl peptidase 4 was found to be expressed in mast cells in normal, psoriasis, and mastocytosis skin as well as in bone marrow mast cells in patients with systemic mastocytosis. In normal skin, mast cells were identified as a major source of dipeptidyl peptidase 4 and we also found that skin mast cells and fibroblasts secrete an active form of this enzyme. Conclusions In a systematic proteomics approach we identified two novel mast cell proteins potentially relevant to skin homeostasis: neural cell adhesion molecule L1 and dipeptidyl peptidase 4.

Introduction It has been shown in some articles that genetic and epigenetic abnormalities cannot only be found in tumor tissues but also in adjacent regions that appear histologically normal. This phenomenon is metaphorically called field cancerization or field defect. Field cancerization is regarded as clinically significant because it is assumed to be an important factor in local recurrence of cancer. As the field showing these molecular abnormalities may not be removed completely by surgery, these changes might lead to neoplasms and subsequent transformation to a tumor. We aimed to investigate the applicability of the methylation status of six tumor suppressor genes as biomarkers for detecting field cancerization in breast cancer. Methods The promoter methylation status of CCND2, DAPK1, GSTP1, HIN-1, MGMT and RASSF1A was determined by methylation-sensitive high-resolution melting (MS-HRM) analysis. MS-HRM methods for CCND2, MGMT and RASSF1A were developed in-house, primer sequences for DAPK1, GSTP1 and HIN-1 have already been published. Biopsy samples were taken from tumor, tumor-adjacent and tumor-distant tissue from 17 breast cancer patients. Normal breast tissues of four healthy women served as controls. Results All MS-HRM methods proved to be very sensitive. LODs were in the range from 0.1 to 1.5 %, LOQs ranged from 0.3 to 5.3 %. A total of 94 %, 82 % and 65 % of the tumors showed methylation of RASSF1A, HIN-1 and MGMT promoters, respectively. The methylation status of these promoters was significantly lower in tumor-distant tissues than in tumor tissues. Tumor-adjacent tissues showed higher methylation status of RASSF1A, HIN-1 and MGMT promoters than tumor-distant tissues, indicating field cancerization. The methylation status of the HIN-1 promoter in tumor-adjacent tissues was found to correlate strongly with that in the corresponding tumors (r = 0.785, p

We have read with great interest the work by Cui et al. (2015) and the letter to the Editor by Cappello et al. (2015). Historical knowledge of data acquisition and interpretation is paramount in the field of applied medical research. Our group was the first to describe increased HSP27 serum concentrations in patients with incipient and manifest COPD, in patients with lung cancer (Hacker et al. 2009; Ankersmit et al. 2012; Zimmermann et al. 2012) and patients with end-stage kidney disease (Lebherz-Eichinger et al. 2008). All these information originated from our research dating back to 2006. In this work, our group (a) investigated serum HSP27/60/70/90 content in patients that underwent coronary artery bypass grafting (CABG) surgery (Szerafin et al. 2008) and (b) identified COPD as an autoimmune disease (Lambers et al. 2009). How was this serum HSP27 insight generated in our laboratory? (a) We have collected serum samples of mild and severe COPD and these were stored at our biobank; (b) A Croatian research group had investigated for the first time the role of HSP27/70 in peripheral blood mononuclear cells (PBMC) derived from COPD patients (Lada et al., 2008); (c) Serendipity was in play since the right R&D HSP27/70 ELISA kit, as “left over” from a prior CABG study and was present in our fridge. All these coincidences led to granted patents stating that HSP27 has the potential to be a serum biomarker for early and manifest COPD and lung cancer (EP2141499, EP2652504). By interpreting the report by Cui et al. (2015) and its comment by Cappello et al. (2015), we want to allude to a recent publication by our research group (Zimmermann et al. 2014). It has to be accepted by the community that an ELISA detection kit for protein XY is sometimes not detecting protein XY (Mueller et al. 2012). In order to investigate this question, we have selected lung cancer patients with known increased serum HSP27 and evaluated five commercially available assays for HSP27 measurement with respect to their capabilities to differentiate non-small cell lung cancer (NSCLC) patients from healthy controls. The following HSP27 ELISA kits were utilized: RD Enzo Life Sciences, 0.823; Invitrogen, 0.780; Abcam 0.642; and MyBioSource, 0.523. From these results, we concluded that it was pure coincidence that we have unintentionally picked the “right” ELISA kit for our investigations in our study period (2007–2015). Abcam or MyBioSource commercial ELISA system would have completely failed to show any difference in our laboratory investigations. We conclude that the results of our clinical method comparison study revealed that commercially available HSP27 assays are not equally useful in detecting increased serum HSP27. By looking at Cui et al. (2015), we observed that a Stressgen Bioreagent HSP27 ELISA was utilized. Since we have not included this commercially available ELISA system in our study, we have difficulty in interpreting the presented results. Since our R&D HSP27 ELISA has repetitively corroborated our primary data set in COPD/lung cancer (>400 patients), it might be possible that Stressgen is detecting another moiety of HSP27 as compared to the R&D HSP27 system. As far as we are concerned, we believe that scientific statements, discussions and publications dealing with serum HSP27 and COPD/lung cancer are important when comparative methodologies are utilized. In conclusion, from an epistemological standpoint, it is of great interest to accept that non-hypothesis-driven “luck factor” has helped to gain a better understanding in COPD genesis. The future will show whether the scientific community will be able to present a biomarker to the public that is able to identify patients with risk to develop COPD or lung cancer. We are deeply convinced that only commercial interest will bring this important knowledge into the realm of clinics.