The Brazilian Butt Lift Remains the Deadliest Aesthetic Surgery Procedure: Are Plastic Surgeons Adjusting Their Surgical Practice to Promote Safety?

BACKGROUND: The number of Brazilian butt lift (BBL) fatalities remains high in the United States despite numerous practice advisories geared towards patient safety and reducing the incidence of fatal pulmonary fat emboli. OBJECTIVES: This study aimed to evaluate US board-certified plastic surgeons' opinions, understanding of BBL-related mortality, and current risk-reducing surgical practices for BBL procedures. METHODS: An online 18-question survey was distributed via email by the Aesthetic Surgery Education and Research Foundation to national board-certified plastic surgeon members of the The Aesthetic Society. Survey responses were collected over 21 days on the Qualtrics platform. RESULTS: The survey response rate was 10% (n = 178). Of the 77% who performed BBL procedures, 48% (n = 80) did not use ultrasound. Approximately 60% (n = 102) of all respondents disagreed with imposing regulations to require ultrasound, with the most frequent reason being that it was unnecessary with adequate surgeon experience (45%). Plastic surgeons thought that high-volume budget clinics (n = 64) and a lack of regulations imposed on individual surgeons by boards of medicine (n = 31) were the greatest contributors to BBL mortality. CONCLUSIONS: Most US plastic surgeons did not use ultrasound for BBL procedures and did not agree that ultrasound should be required, which may partially be the result of unsuccessful educational outreach for risk-reducing practices and training for ultrasound. Regulations by the boards of medicine imposed on individual surgeons, in combination with new legislation targeted at ownership of high-volume clinics, are strongly backed by surgeon respondents as measures that may improve patient safety.

Coverage of Fertility Preservation and Treatment Among Surgical Trainees in the United States of America.

INTRODUCTION: Surgery trainees spend their prime fertility years in training, which leads to delays in childbearing, accompanying infertility challenges, and high-risk pregnancies. Literature report of institutional support for fertility preservation (egg/sperm freezing) and treatment is lacking. The cost is particularly prohibitive while receiving a resident physician salary. This study aimed to assess availability of fertility resources and institutional coverage of fertility services to US General Surgery Residents (GSR) and Breast Fellows. METHODS: We composed and distributed a 26-question survey to GS residency and fellowship program directors nationwide to survey residents and fellows. Summary and descriptive statistics were tabulated, and categorical variables were analyzed using Pearson's chi square test. RESULTS: A total of 234 US surgical trainees (male n = 75, female n = 155, unreported n = 4) completed the survey. Total of 12 % of trainees reported having been counseled on family planning/fertility treatment during training, and only 5.1% were counseled on fertility preservation. Perceived lack of support from program (p = 0.027) and counseling of fertility preservation (p = 0.009) were significantly associated with female gender. A minority (12.5%) reported having insurance coverage for fertility preservation and 26% had coverage of fertility treatment. In addition, 2.6% respondents pursued fertility preservation while in training and 33% reported they would pursue fertility preservation if it was covered by insurance. CONCLUSIONS: Fertility preservation is rarely discussed in US General Surgery residency programs. The large majority of GSR lacks awareness of insurance coverage of fertility preservation and treatment. Strong efforts are necessary to improve fertility education for GSR and insurance coverage to meet trainee's needs.

Plastic Surgery Training During Coronavirus Disease 2019 Pandemic: A Quantitative Study on Trainees' Wellness and Education.

PURPOSE: Coronavirus disease 2019 (COVID-19) pandemic has had far reaching impacts on all aspects of the healthcare system, including plastic surgery training. Due to reduction in the number of elective surgery cases and need for social distancing, plastic surgery education has shifted from the operating room to the virtual learning environment. Although these changes have been qualitatively described, the authors present a quantitative analysis of plastic surgery training changes due to the COVID-19 pandemic. Our study has identified residents' greatest impediments and inquired about suggestions for further improvements. Our goal is to help residency programs through the COVID-19 pandemic era and contribute to future guidelines when residency education encounters additional unexpected changes. METHODS: An institutional review board approved anonymous survey using Qualtrics was forwarded on April 23, 2020 to US plastic surgery program directors to be distributed to plastic surgery residents and fellows. Questions centered on the impact of COVID-19 on residents' well-being, education and career plans results were collected for data analysis. Residents were given the option to be in a raffle to win a $50 amazon gift card. Completion of the survey was both anonymous and voluntary. RESULTS: A total of 69 trainees responded (52 integrated residents and 17 independent fellows) from 18 states. Fifty-one percent were male and 49% were female. Fifty-six percent of trainees plan to complete a fellowship program after graduation, 31% will join private practice. Nine percent of trainees reported changes in their postgraduation plans due to the pandemic, 67% were senior trainees. Of those whose goals were affected by COVID-19 pandemic, 56% opted to pursue additional fellowship training. They described reduced operative exposure and cancelations of elective surgeries (50%), the limited availability of private practice jobs (37.5%), and financial reasons (12.5%) for their decision. Twelve percent reported being concerned about not meeting the necessary requirements to finish their residency and graduate on time. Seventy-six percent of trainees expressed concerns about the health and safety of themselves, family and loved ones. Forty-nine percent of trainees reported increased levels of stress since the onset of the pandemic. Ninety-seven percent of trainees reported having reduction in their operative time during the COVID-19 pandemic. They utilized their nonoperative time for online education modules (84%), educational readings (82%), and research (80%). Plastic surgery trainees learned about national webinars through emails from professional society (83%), co-resident/fellow (77%), program director emails (74%), and social media (22%). Webinars attended were mostly through virtual platform modalities, among which Zoom and Webex were the most preferred. Less interactions with colleagues and faculty was the biggest barrier to adopting virtual conferences. Despite this, 72% agreed that having grand rounds, didactics and journal clubs online increased attendance. Additionally, 88% of respondents expressed interests in attending professional society sponsored virtual grand rounds in the future. CONCLUSIONS: Results from our survey demonstrated that the overwhelming majority of plastic surgery residents have had reductions in operative times and widespread curriculum changes during the COVID-19 pandemic. These recent changes have increased residents' stress levels and adversity affected their future career plans. Additionally, COVID-19 has heralded an increase in virtual conferences and learning modules. Plastic surgery trainees expressed a preference for virtual educational platforms and interest in continuing virtual didactics in the future. This may irreversibly change the landscape of future plastic surgery training.

Reflecting on Plastic Surgery Training During Early COVID-19 Pandemic: Resident Exposure and Telemedicine.

PURPOSE: Coronavirus disease 2019 (COVID-19) pandemic has been an unprecedented public health crisis. As hospitals took measures to increase their capacity to manage COVID-19 patients, plastic surgeons have also had to modify their routine to continue serving their vital role within the hospital environment. In an effort to reduce exposure to COVID-19 and conserve hospital resources, many plastic surgery programs drastically modified call schedules, restructured inpatient teams, triaged operative cases, and expanded telemedicine encounters. Plastic surgery programs focused on craniofacial procedures were impacted by precautionary preventative protocol and shifts in case load made to protect both the healthcare teams and the patients. At academic centers, plastic surgery trainees of all domains felt the impact of these changes. Recognizing the implications on future craniofacial surgical practice, the pandemic has made, the goal of the authors' study is to measure initial impacts of COVID-19 on plastic surgery trainees using a nationwide survey. The authors' results present the first quantitative analysis of plastic surgery trainees' exposure to COVID-19, deployment to other medical specialties, usage of personal protective equipment, and implementation of telemedicine during the pandemic. While healthcare systems have greatly adapted to pandemic complications and can anticipate vaccination, resurgence of COVID-19 cases linked to the delta variant heightens the authors' urgency in understanding the early pandemic, and its lasting impacts on healthcare. In the months following pandemic onset, telemedicine has become a mainstay in healthcare, trainees have adapted and become integrated in patient care in novel ways, and visits unable to transition to telemedical settings received substantial attention to ensure patient and provider safety. METHODS: An institutional review board-approved anonymous, multiple-choice and short-answer, Qualtrics survey regarding plastic surgery resident experiences with COVID-19 exposure. It was sent to all US plastic surgery program directors and program coordinators on April 23, 2020 with the request to distribute the survey to their residents. Residents were given the option to participate in a raffle for a $50 gift card. Outcomes measured included demographics, exposure to COVID-19, availability of resources, and adjustments to residency training practices. RESULTS: Sixty-nine plastic surgery residents throughout all years of training from 18 states responded. Gender, year of training, and location did not significantly impact these reports.Sixteen percent of residents reported covering a COVID-19 team. Twelve percent reported covering a shift not within their scope of practice. From these reports, residents mostly worked in the intensive care unit (50%) and the emergency department (29%).Half of the residents believe they were exposed to high-risk patients. This was reported in a variety of settings: the emergency department for plastic surgery consults (34%), caring for plastic surgery inpatients (16%), performing trauma reconstruction surgery (16%), cancer reconstruction surgery (12%), elective surgery (6%), and intraoperative consults (6%).Seventy-two percent of residents reported adequate access to personal protective equipment. Equipment type varied by patient exposure. When attending to a non-COVID-19 inpatient, most residents used a standard mask (62%) rather than an N95 mask (21%). N95 masks were generally used in patients with unknown COVID-19 status. Residents reported using eye and face shields when attending to non-COVID-19 ICU patients (17%), patients with unknown COVID-19 status (27%), and in the operating room (34%).Forty percent of residents implemented telemedicine to see patients for new consults, follow-up visits, postop checks, and wound checks. Eighty-five percent of residents report that they would continue to incorporate telemedicine in the future. Most significant reported barrier to using telemedicine is the limited ability to perform a physical examination (33%) followed by limited patient access to telemedicine (21%). Other challenges included poor ease of use for patients or providers, billing questions, and lack of interpersonal connection with patients. CONCLUSION: This study, to the best of the authors' knowledge, is the first to quantitatively investigate how plastic surgery residents have been affected by the widespread impacts of the COVID-19 pandemic. It reports resident exposure to COVID-19 and their associated concerns, resident access to and perceived adequacy of personal protective equipment, as well as changes to clinical practice.

Two Cases Surviving Macro Fat Emboli Complications Following Gluteal Fat Grafting.

Media attention has in recent years created an increased patient demand for gluteal contouring and augmentation. Gluteal augmentation and contouring with autologous fat transfer, colloquially referred to as the "Brazilian butt lift" (BBL), can be performed safely and effectively, with an overall complication rate ranging from 1.5% to 6.8%. However, there have been an alarming number of lethal events from intravenous passage of injected fat and fatal pulmonary embolism due to macro-fat emboli (MAFE). MAFE (fat emboli >1 cm in diameter), distinct from micro-fat emboli, can quickly result in catastrophic cardiopulmonary compromise and death. Accurate mortality estimates are limited by difficulties in determining accurate values for the total number of BBL procedures performed because most of these cases are performed at budget clinics. Accurate morbidity estimates are limited by a lack of published outcomes and a low level of evidence in published studies. The first case of survival of MAFE secondary to BBL was reported in 2019 by Peña et al. Few highly morbid complications secondary to MAFE have been reported because such events are almost universally lethal. We present 2 recent cases of survival after MAFE in the setting of gluteal fat transfer following expedient transfer to a tertiary care setting, allowing for timely and successful intervention. We illustrate examples of how MAFE is a highly lethal complication of gluteal fat grafting. Early recognition and immediate aggressive vital support to stabilize the patient are key for survival.

Facial Flap Necrosis From COVID-19 Face Mask Precautions.

ABSTRACT: Use of facial mask coverings has been a strong Centers for Disease Control and Prevention recommendation as an essential mitigation measure in the spread of the SARS-CoV-2 novel coronavirus (COVID)-19 virus. Face mask utilization has been shown to induce changes in the skin microclimate, especially around the perioral and perinasal regions. This results in increased mask adjustments and development of friction between masks and the underlying skin. The authors report novel findings of 2 individuals with skin cancer who underwent facial reconstruction during the COVID-19 pandemic. They encountered untoward sequelae of facial flap pressure necrosis due to the use of face mask coverings. These individuals were ultimately successfully treated with local wound care. One individual experienced auricular implant extrusion and flap loss. It is critical that reconstructive surgeons be aware of potential complications and the need for potential revision surgeries due to the use of face masks, and educate their patients to properly position the protective face masks based on the type of reconstruction performed. Plastic surgeons might also reconsider reconstructive management options in light of these additional obstacles.

Operational and Financial Impact of COVID-19: A Survey of Plastic Surgeons in Miami.

BACKGROUND: In response to the COVID-19 pandemic, new guidelines were issued cautioning against performing elective procedures. We aimed to assess the impact of the COVID-19 pandemic on operational and financial aspects of plastic surgery in Miami. METHODS: A multiple-choice and short-answer survey regarding practice changes and financial impact was sent to all 67 members of the Miami Society of Plastic Surgeons. RESULTS: A 41.8% (n = 28) response rate was obtained, five responses did not meet the inclusion criteria, and statistical analysis was performed on 34.3% (n = 23) of responses. Of the plastic surgeons who responded, 21.74% operate in an academic setting, 60.87% are in a single practitioner private practice, and 17.39% are in a multi-practitioner private practice. An estimated 60% of academic plastic surgeons had 75% or more of their previously scheduled cases canceled, compared with 57.14% in single practitioner private practice and 100% in multi-practitioner private practice. In total, 64.29% of single practitioner private practices and 50% of multi-practitioner private practices have had to obtain a small business loan. Single practitioner private practice plastic surgeons reported having an average of 6.5 months until having to file for bankruptcy or permanently close their practices, and multi-practitioner private practice plastic surgeons reported an average of 6 months. CONCLUSIONS: Guidelines to support small business must be implemented in order to allow private practice surgeons to recover from the substantial economic impact caused by the pandemic because it is necessary to reestablish patient access and provide proper care to our patients.

Future Direction in Rhinoplasty: Functional Improvements for a Better Outcome.

The nose plays both an aesthetic and functional role in the human body. Physiologically, the nose is an important part of the upper airway. Aesthetically, it is the central focal point of the face. Thus, rhinoplasty has evolved to be both an aesthetic and functional surgery, as the manipulation of the aesthetic subunits of the nose inadvertently leads to the functional alterations of the nose. While the aesthetic goals of rhinoplasty are well described in the literature, functional outcomes from rhinoplasty have been more challenging to delineate. Rhinoplasty can have an impact on the sense of smell, sleep apnea, oxygenation, cognitive function, cardiovascular function, and voice. We have systematically reviewed the current literature in regard to functional rhinoplasty and septoplasty to summarize current surgical maneuvers and their impact on nasal function, along with physiological and perceived functional changes from rhinoplasty.

Twenty-Four-Hour Ex Vivo Perfusion with Acellular Solution Enables Successful Replantation of Porcine Forelimbs.

BACKGROUND: A critical barrier to successful limb replantation and allotransplantation is the maximum allowable limb ischemia time of 4 to 6 hours. The current gold standard is to preserve amputated limbs on an ice slurry. Experimental machine perfusion has yielded promising results as an alternative. In particular, hypothermic acellular perfusion has enabled preservation of amputated limbs for up to 12 hours thus far. METHODS: Amputated forelimbs of Yorkshire pigs were preserved on static cold storage at 4°C for 4 hours (static cold storage group) or perfused at 8°C for 24 hours (perfusion group) with oxygenated modified STEEN Solution perfusate before replantation. Animals were followed up for 7 days after replantation. RESULTS: Eight animals underwent replantation (cold storage group, n = 4; perfusion group, n = 4). Seventy-five and 100 percent of animals in the static cold storage and perfusion groups survived for 7 days, respectively. Glycogen and adenosine triphosphate remained stable throughout perfusion. Heart and respiratory rate after replantation were increased in the static cold storage group. There was increased damage in muscle biopsy specimens obtained from animals in the static cold storage group after 7 days when compared with those from animals in the perfusion group. CONCLUSIONS: Hypothermic acellular ex vivo perfusion of limbs for up to 24 hours enables tissue preservation comparable to that obtained with conventional static cold storage for 4 hours and may reduce muscle damage and systemic reactions on limb replantation. Translation to human limbs may help improve limb replantation and allotransplantation outcomes.

Genetic Testing for Breast Cancer Susceptibility Should Be Offered before Unilateral Abdominally Based Free Flap Breast Reconstruction.

BACKGROUND: Pathogenic mutations have been identified in approximately 10 percent of patients who present with breast cancer. Notably, failure to identify deleterious genetic mutations has particular implications for patients undergoing abdominally based breast reconstruction, as the donor site can be used only once. The authors sought to determine: (1) how many patients underwent genetic testing before unilateral abdominally based free flap breast reconstruction; (2) how often deleterious mutations were detected after abdominally based free flap breast reconstruction; and (3) the cost-effectiveness of expanding genetic testing in this patient population. METHODS: The authors retrospectively identified all patients who underwent unilateral abdominally based free flap breast reconstruction at Brigham and Women's Hospital/Dana-Farber Cancer Institute between 2007 and 2016. Chart review was performed to collect relevant demographic and clinical data. Relevant hospital financial data were obtained. RESULTS: Of the 713 who underwent free flap breast reconstruction, 160 patients met inclusion criteria, and mean follow-up was 5.8 years. Three patients (1.9 percent of 160) underwent contralateral surgery after completing reconstruction, two of whom had BRCA2 and one with ATM mutation. One hundred eleven patients met National Comprehensive Cancer Network guidelines for genetic testing, but of those only 55.9 percent (62 patients) were tested. Financial data revealed that testing every patient in the cohort would result in a net savings of $262,000. CONCLUSIONS: During a relatively short follow-up period, a small percentage of patients were diagnosed with pathogenic mutations and underwent contralateral mastectomy and reconstruction. However, because of the costliness of surgery and the decreased cost of genetic testing, it is cost-effective to test every patient before unilateral abdominally based free flap breast reconstruction.

The Evolving Clinical Presentation of Acute Rejection in Facial Transplantation.

IMPORTANCE: Acute rejection is one of the most frequent complications in facial transplantation, with potentially severe consequences for the recipient if overlooked. Clinical signs, such as erythema or edema, are helpful to diagnose acute rejection in the early follow-up stage; however, it is not well known whether these clinical signs remain reliable markers of acute rejection beyond the second posttransplant year. OBJECTIVE: To determine the diagnostic value of clinical signs of acute rejection after facial transplantation over time. DESIGN, SETTING, AND PARTICIPANTS: A retrospective, single-center cohort study was conducted of patients who underwent facial transplantation at Brigham and Women's Hospital between April 2009 and October 2014, with up to an 8-year follow-up. Medical records were reviewed until September 30, 2017. The medical records from 104 encounters with 7 patients who underwent partial or full facial transplantation were analyzed for symptoms of rejection, immunosuppressive therapy, and histopathologic findings. MAIN OUTCOMES AND MEASURES: The occurrence of 5 clinical signs of acute rejection were evaluated: erythema, edema, exanthema, suture line erythema, and mucosal lesions. Odds ratios (ORs) were calculated to determine the statistically significant association of these signs with the histopathologic diagnosis of rejection. In addition, tacrolimus blood levels, as a surrogate marker of immunosuppressive therapy, were evaluated. RESULTS: Of the 7 patients included in the study, 5 were men. The mean follow-up was 66 months (range, 35-101). Of 104 clinical encounters, 46 encounters (44.2%) represented rejection episodes and 58 encounters (55.8%) represented no-rejection episodes. Beyond 2 years posttransplantation, only erythema (OR, 6.53; 95% CI, 1.84-20.11; P = .004) and exanthema (OR, ∞; 95% CI, 2.2-∞; P = .004) were demonstrated to be reliable clinical signs of acute rejection in facial transplantation. There was also a statistically significant association of subtherapeutic tacrolimus levels with late rejection episodes (OR, 3.79; 95% CI, 1.25-12.88; P = .03). In addition, the occurrence of subclinical rejection was more frequent during later follow-up times (7 [24.1%] late rejections vs 1 [5.9%] early rejection). Five of 8 subclinical rejections (62.5%) were associated with subtherapeutic tacrolimus levels. CONCLUSIONS AND RELEVANCE: Clinical signs of acute rejection in facial transplantation appear to be of limited diagnostic value, particularly after the second postoperative year. Until alternative biomarkers for rejection are identified, protocol skin biopsies will remain necessary for guiding assessments of allograft rejection. LEVEL OF EVIDENCE: 3.

Chronic rejection of human face allografts.

Face vascularized composite allografts (FVCAs) have helped patients with severe facial disfigurement, with acute rejection now largely controlled through iatrogenic immunosuppression. However, little is known regarding the incidence and mechanism(s) of more long-term pathologic alterations in FVCAs that may affect function and graft durability. Protocol surveillance biopsy specimens for up to an 8-year interval in 7 patients who received FVCAs at our institution revealed histopathologic evidence of chronic rejection. Clinical manifestations included features of premature aging, mottled leukoderma accentuating suture lines, telangiectasia, and dryness of nasal mucosa. Pathologic changes consisted of epidermal thinning accompanied by discrete foci of lymphocyte-mediated cytotoxicity, hyperkeratosis, follicular plugging, vascular ectasia, and sclerosis beneath the epidermal layer associated with collagen type I deposition. Genomic interrogation and immunohistochemistry of sclerotic zones revealed upregulation of the AP-1 pathway components, JunB and c-Fos, previously implicated in overproduction of type I dermal collagen in the setting of systemic sclerosis. We conclude that some patients develop chronic rejection in FVCAs with striking similarities to alterations seen in certain autoimmune cutaneous disorders (lupus erythematosus and scleroderma/chronic sclerodermoid graft-versus-host disease). Identification of relevant pathways and genes, such as JunB and c-Fos, may provide new targets for preventative therapies for chronic immune-mediated changes in vascularized composite allografts.

Kidney Dysfunction After Vascularized Composite Allotransplantation.

BACKGROUND: Kidney dysfunction is a major complication after nonrenal solid organ transplants. Transplantation of vascularized composite allografts (VCA) has yielded successful midterm outcomes despite high rates of acute rejection and greater requirements of immunosuppression. Whether this translates in higher risks of kidney complications is unknown. METHODS: Ninety-nine recipients of facial or extremity transplants from the Brigham and Women's Hospital (BWH) and the International Registry on Hand and Composite Tissue Transplantation (IR) were reviewed. We assessed immunosuppression, markers of renal function over time, as well as pretransplant and posttransplant renal risk factors. RESULTS: Data were obtained from 10 patients from BWH (age at transplant, 42.5 ± 13.8 years) and 89 patients (37.8 ± 11.5 years) from IR. A significant rise in creatinine levels (BWH, P = 0.0195; IR, P < 0.0001) and drop in estimated glomerular filtration rate (GFR) within the first year posttransplant was observed. The BWH and IR patients lost a mean of 22 mL/min GFR and 60 mL/min estimated GFR in the first year, respectively. This decrease occurred mostly in the first 6 months posttransplant (BWH). Pretransplant creatinine levels were not restored in either cohort. A mixed linear model identified multiple variables correlating with renal dysfunction, particularly tacrolimus trough levels. CONCLUSIONS: Kidney dysfunction represents a major complication posttransplantation in VCA recipients early on. Strategies to mitigate this complication, such as reducing calcineurin inhibitor trough levels or using alternative immunosuppressive agents, may improve long-term patient outcomes. Standardizing laboratory and data collection of kidney parameters and risk factors in VCA patients will be critical for better understanding of this complication.

Acellular Hypothermic Extracorporeal Perfusion Extends Allowable Ischemia Time in a Porcine Whole Limb Replantation Model.

BACKGROUND: One of the major challenges in traumatic amputation is the need to keep ischemia time brief (4 to 6 hours) to avoid ischemic damage and enable successful replantation. The current inability to meet this challenge often leads to traumatic limb loss, which has a considerable detrimental impact on the quality of life of patients. METHODS: The authors' team built a portable extracorporeal membrane oxygenator device for the perfusion of amputated extremities with oxygenated acellular solution under controlled parameters. The authors amputated forelimbs of Yorkshire pigs, perfused them ex vivo with acellular Perfadex solution for 12 hours at 10°C in their device, and subsequently replanted them into the host animal. The authors used limbs stored on ice slurry for 4 hours before replantation as their control group. RESULTS: Clinical observation and histopathologic evaluation both demonstrated that there was less morbidity and less tissue damage to the cells during preservation and after replantation in the perfusion group compared with the standard of care. Significant differences in blood markers of muscle damage and tissue cytokine levels underscored these findings. CONCLUSIONS: The authors demonstrated the feasibility and superiority of ex vivo hypothermic oxygenated machine perfusion for preservation of amputated limbs over conventional static cold storage and herewith a substantial extension of the allowable ischemia time for replantation after traumatic amputation. This approach could also be applied to the field of transplantation, expanding the potential pool of viable donor vascularized composite allografts.

Tissue conservation for transplantation.

Pathophysiological changes that occur during ischemia and subsequent reperfusion cause damage to tissues procured for transplantation and also affect long-term allograft function and survival. The proper preservation of organs before transplantation is a must to limit these injuries as much as possible. For decades, static cold storage has been the gold standard for organ preservation, with mechanical perfusion developing as a promising alternative only recently. The current literature points to the need of developing dedicated preservation protocols for every organ, which in combination with other interventions such as ischemic preconditioning and therapeutic additives offer the possibility of improving organ preservation and extending it to multiple times its current duration. This review strives to present an overview of the current body of knowledge with regard to the preservation of organs and tissues destined for transplantation.

Facial transplantation: worth the risks? A look at evolution of indications over the last decade.

PURPOSE OF REVIEW: The first face transplant was performed 10 years ago by Dubernard and his team in France. Since then, surgeons have continued to push the frontiers of vascularized composite allotransplantation and broaden the indications for face transplantation. In this review, we summarize some of the recent successes and failures in facial transplantation from the point of view of indications. RECENT FINDINGS: Recent literature includes case reports on face transplants in sensitized patient, with simultaneous bilateral upper extremity transplants, positive HIV status, and postmalignancy. Additionally, we summarize some of the outcomes of face transplants, including chronic rejection and latent viral infections. SUMMARY: Facial injuries vary widely, thus candidacy for face transplant should be assessed based on current guidelines, and a case-by-case basis. Although sensitization to donor-specific antigens should not be an absolute contraindication for facial allotransplantation, along with other comorbidities such as positive HIV status, history of malignancy should be evaluated cautiously. Additionally, multiple case studies advice against simultaneous transplantation of multiple vascularized composite allotransplantations. Other considerations include psychological health, social support, and availability for long-term follow-up. Ultimately, face transplant is not simply a surgery; it is a lifelong commitment between a patient and his/her medical team.

Short-chain fatty acid-modified hexosamine for tissue-engineering osteoarthritic cartilage.

Inflammation and tissue degeneration play key roles in numerous rheumatic diseases, including osteoarthritis (OA). Efforts to reduce and effectively repair articular cartilage damage in an osteoarthritic environment are limited in their success due to the diseased environment. Treatment strategies focused on both reducing inflammation and increasing tissue production are necessary to effectively treat OA from a tissue-engineering perspective. In this work, we investigated the anti-inflammatory and tissue production capacity of a small molecule 3,4,6-O-tributanoylated-N-acetylglucosamine (3,4,6-O-Bu3GlcNAc) previously shown to inhibit the nuclear factor κB (NFκB) activity, a key transcription factor regulating inflammation. To mimic an inflammatory environment, chondrocytes were stimulated with interleukin-1ß (IL-1ß), a potent inflammatory cytokine. 3,4,6-O-Bu3GlcNAc exposure decreased the expression of NFκB target genes relevant to OA by IL-1ß-stimulated chondrocytes after 24 h of exposure. The capacity of 3,4,6-O-Bu3GlcNAc to stimulate extracellular matrix (ECM) accumulation by IL-1ß-stimulated chondrocytes was evaluated in vitro utilizing a three-dimensional hydrogel culturing system. After 21 days, 3,4,6-O-Bu3GlcNAc exposure induced quantifiable increases in both sulfated glycosaminoglycan and total collagen. Histological staining for proteoglycans and type II collagen confirmed these findings. The increased ECM accumulation was not due to the hydrolysis products of the small molecule, n-butyrate and N-acetylglucosamine (GlcNAc), as the isomeric 1,3,4-O-tributanoylated N-acetylglucosamine (1,3,4-O-Bu3GlcNAc) did not elicit a similar response. These findings demonstrate that a novel butanoylated GlcNAc derivative, 3,4,6-O-Bu3GlcNAc, has the potential to stimulate new tissue production and reduce inflammation in IL-1ß-induced chondrocytes with utility for OA and other forms of inflammatory arthritis.

Regulation of mouse oocyte microtubule and organelle dynamics by PADI6 and the cytoplasmic lattices.

Organelle positioning and movement in oocytes is largely mediated by microtubules (MTs) and their associated motor proteins. While yet to be studied in germ cells, cargo trafficking in somatic cells is also facilitated by specific recognition of acetylated MTs by motor proteins. We have previously shown that oocyte-restricted PADI6 is essential for formation of a novel oocyte-restricted fibrous structure, the cytoplasmic lattices (CPLs). Here, we show that α-tubulin appears to be associated with the PADI6/CPL complex. Next, we demonstrate that organelle positioning and redistribution is defective in PADI6-null oocytes and that alteration of MT polymerization or MT motor activity does not induce organelle redistribution in these oocytes. Finally, we report that levels of acetylated microtubules are dramatically suppressed in the cytoplasm of PADI6-null oocytes, suggesting that the observed organelle redistribution failure is due to defects in stable cytoplasmic MTs. These results demonstrate that the PADI6/CPL superstructure plays a key role in regulating MT-mediated organelle positioning and movement.