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1.
Aesthetic Plast Surg ; 2024 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-38951227

RESUMO

BACKGROUND: Surgical chest masculinization procedures, especially gender-affirming top surgery (GATS), are becoming increasingly prevalent in the USA. While a variety of surgical techniques have been established as both safe and effective, there is limited research examining ideal aesthetic nipple appearance and incision scar pattern. This study employs patient images to understand the public's perception on top surgery outcomes when adjusting for BMI ranges and Fitzpatrick skin types. METHODS: Images from RealSelf modified via Adobe Photoshop depicted various scar types and nipple-areolar complex (NAC) sizes/positions. A Qualtrics survey was distributed utilizing Amazon Mechanical Turk. Statistical analysis was performed through JMP Pro 17 for ordinal and categorical values, with a p value less than or equal to 0.05 statistically significant. RESULTS: A moderately sized and laterally placed NAC was preferred. A transverse scar that resembles the pectoral border between the level of the inframammary fold and pectoral insertion was deemed most masculine and aesthetic. Majority of results demonstrated that this is unaffected by Fitzpatrick skin types. Increased BMI images impacted public preferences, as a nipple placed farther from the transverse incision (p = 0.04) and a transverse scar position closer to the IMF was preferred in higher BMI patients. CONCLUSIONS: An understanding of the most popular NAC and scar choices, as well as how these factors may differ when considering a Fitzpatrick skin type or BMI categorization was attained. This validates the importance of patient-centered approach when employing surgical techniques in GATS. Future studies intend to obtain reports from actual patients considering GATS. NO LEVEL ASSIGNED: This journal requires that authors assign a level of evidence to each submission to which Evidence-Based Medicine rankings are applicable.

2.
Breast Cancer Res ; 26(1): 109, 2024 Jul 02.
Artigo em Inglês | MEDLINE | ID: mdl-38956693

RESUMO

BACKGROUND: The effect of gender-affirming testosterone therapy (TT) on breast cancer risk is unclear. This study investigated the association between TT and breast tissue composition and breast tissue density in trans masculine individuals (TMIs). METHODS: Of the 444 TMIs who underwent chest-contouring surgeries between 2013 and 2019, breast tissue composition was assessed in 425 TMIs by the pathologists (categories of lobular atrophy and stromal composition) and using our automated deep-learning algorithm (% epithelium, % fibrous stroma, and % fat). Forty-two out of 444 TMIs had mammography prior to surgery and their breast tissue density was read by a radiologist. Mammography digital files, available for 25/42 TMIs, were analyzed using the LIBRA software to obtain percent density, absolute dense area, and absolute non-dense area. Linear regression was used to describe the associations between duration of TT use and breast tissue composition or breast tissue density measures, while adjusting for potential confounders. Analyses stratified by body mass index were also conducted. RESULTS: Longer duration of TT use was associated with increasing degrees of lobular atrophy (p < 0.001) but not fibrous content (p = 0.82). Every 6 months of TT was associated with decreasing amounts of epithelium (exp(ß) = 0.97, 95% CI 0.95,0.98, adj p = 0.005) and fibrous stroma (exp(ß) = 0.99, 95% CI 0.98,1.00, adj p = 0.05), but not fat (exp(ß) = 1.01, 95%CI 0.98,1.05, adj p = 0.39). The effect of TT on breast epithelium was attenuated in overweight/obese TMIs (exp(ß) = 0.98, 95% CI 0.95,1.01, adj p = 0.14). When comparing TT users versus non-users, TT users had 28% less epithelium (exp(ß) = 0.72, 95% CI 0.58,0.90, adj p = 0.003). There was no association between TT and radiologist's breast density assessment (p = 0.58) or LIBRA measurements (p > 0.05). CONCLUSIONS: TT decreases breast epithelium, but this effect is attenuated in overweight/obese TMIs. TT has the potential to affect the breast cancer risk of TMIs. Further studies are warranted to elucidate the effect of TT on breast density and breast cancer risk.


Assuntos
Densidade da Mama , Mama , Mamografia , Testosterona , Pessoas Transgênero , Humanos , Densidade da Mama/efeitos dos fármacos , Feminino , Adulto , Testosterona/uso terapêutico , Mamografia/métodos , Mama/diagnóstico por imagem , Mama/patologia , Masculino , Pessoa de Meia-Idade , Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/patologia , Neoplasias da Mama/diagnóstico por imagem , Índice de Massa Corporal , Procedimentos de Readequação Sexual/efeitos adversos , Procedimentos de Readequação Sexual/métodos
3.
J Plast Reconstr Aesthet Surg ; 95: 24-27, 2024 Jun 06.
Artigo em Inglês | MEDLINE | ID: mdl-38865841

RESUMO

Chest masculinization surgery is an increasingly common procedure and has offered significant benefits to the gender-diverse community. Although major complications are an infrequent occurrence in chest masculinization surgery, they may still impact surgical success. While the long-term success of chest masculinization surgery has been examined through patient-reported outcome measures, there is no study that has assessed the association between complications and patient-reported outcomes. In this study, patients who underwent double incision or periareolar mastectomies for chest masculinization by a single surgeon were surveyed. Demographic, operative, and postoperative variables were obtained from medical records. The BODY-Q and SCAR-Q modules (Q-Portfolio.org) were used to assess postoperative patient-reported outcomes. There were 151 survey responders (43% response rate), 132 without complications and 19 with complications. No significant differences in patient-reported outcomes were noted when comparing the groups with and without complications. While some providers may be reluctant to offer chest masculinization to patients they deem high risk for complications, patients and providers should be assured that complications do not significantly impact patient satisfaction. LAY SUMMARY: Gender-affirming chest masculinization surgery is increasingly common. We investigated the impact of complications on patient-reported outcomes in chest masculinization. Patients and providers should be assured that complications do not significantly impact patient satisfaction.

5.
Ann Plast Surg ; 92(4): 383-388, 2024 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-38527342

RESUMO

ABSTRACT: We evaluated patient-reported outcomes to assess for patient and procedural factors associated with postchest masculinization subjective nipple sensation. Patients who underwent double-incision or periareolar mastectomies for chest masculinization by a single senior surgeon (2015-2019) were surveyed at 2 time points regarding postoperative nipple sensation and satisfaction, including patient-reported outcomes using BODY-Q modules (Q-Portfolio.org). Demographic, operative, and postoperative variables were obtained from medical records. Patients were stratified according to survey responses. Univariate and multivariate analyses were performed.Response rate was 42% for survey 1 and 22% for survey 2. Of the 151 survey 1 responders, 138 (91.4%) received double-incision mastectomies and 13 (8.6%) received periareolar mastectomies. Among Survey 1 responders, 84.6% periareolar patients and 69.6% double-incision patients reported "completely" or "a little" nipple sensation preservation, and the difference trended toward significance (P = 0.0719). There was a stepwise increase in proportion of patients reporting sensation with greater recovery time until response to survey 1. Obesity (P = 0.0080) and greater tissue removed (P = 0.0247) were significantly associated with decreased nipple sensation. Nipple satisfaction scores were significantly higher for patients reporting improved nipple sensation (P = 0.0235). Responders to survey 2 who reported greater satisfaction with nipple sensation were significantly more likely to report preserved sensitivity to light touch (P = 0.0277), pressure (P = 0.0046), and temperature (P = 0.0031). Preserved erogenous sensation was also significantly associated with greater satisfaction (P = 0.0018).In conclusion, we found that nipple sensation may be associated with postoperative nipple satisfaction. Operative techniques to optimize nipple sensation preservation may improve this population's postoperative satisfaction.


Assuntos
Neoplasias da Mama , Mamoplastia , Ferida Cirúrgica , Humanos , Feminino , Mastectomia/métodos , Mamilos/cirurgia , Mamoplastia/métodos , Resultado do Tratamento , Neoplasias da Mama/cirurgia , Sensação , Medidas de Resultados Relatados pelo Paciente , Ferida Cirúrgica/cirurgia , Estudos Retrospectivos
6.
medRxiv ; 2024 Jan 10.
Artigo em Inglês | MEDLINE | ID: mdl-38260574

RESUMO

Objective: Determine the association between TT and breast tissue composition and breast tissue density in trans masculine individuals (TMIs). Design: This is a cross-sectional study. Setting: TMIs (n=444) underwent chest-contouring surgeries to treat their gender dysphoria between 2013 and 2019 at an urban medical center. Participants: Of the 444 TMIs, 425 had pathology images analyzed by our deep-learning algorithm to extract breast tissue composition. A subset of 42/444 TMIs had mammography prior to surgery; mammography files were available for 25/42 TMIs and analyzed using a breast density software, LIBRA. Main Outcomes and Measures: The first outcome was the association of duration of TT and breast tissue composition assessed by pathologists (categories of lobular atrophy and stromal composition) or by our algorithm (% epithelium, % fibrous stroma, and % fat). The second outcome is the association of TT and breast density as assessed by a radiologist (categorical variable) or by LIBRA (percent density, absolute dense area, and absolute non-dense area). Results: Length of TT was associated with increasing degrees of lobular atrophy ( p <0.001) but not fibrous content ( p =0.821) when assessed by the pathologists. Every six months of TT was associated with decreased amounts of both epithelium (exp(ß)=0.97, 95% CI 0.95-0.98, adj p =0.005) and stroma (exp(ß)=0.99, 95% CI 0.98-1.00, adj p =0.051), but not fat (exp(ß)=1.01, 95%CI 0.98-1.05, p =0.394) in fully adjusted models. There was no association between TT and radiologist's breast density assessment ( p =0.575) or LIBRA measurements ( p >0.05). Conclusions: TT decreases breast epithelium and fibrous stroma, thus potentially reducing the breast cancer risk of TMIs. Further studies are warranted to elucidate the effect of TT on breast density and breast cancer risk. Summary Box: Very little is known about the effect of gender-affirming testosterone therapy on cancer risks, such as breast cancer.Epidemiological studies had different conclusions about the association between testosterone and breast cancer in cisgender women (positive association) and trans masculine individuals (inverse association).More laboratory-based research are needed to understand the effect of testosterone on breast cancer risk in the understudied trans masculine population.Our study provides quantitative histological evidence to support prior epidemiological reports that testosterone may reduce breast cancer risk in trans masculine individuals.

7.
Aesthet Surg J ; 44(1): 102-111, 2023 Dec 14.
Artigo em Inglês | MEDLINE | ID: mdl-37556831

RESUMO

BACKGROUND: Individuals with gender dysphoria have disproportionately high rates of depression and anxiety compared to the cisgender population. Although the benefits of gender affirmation surgery have been well documented, it is unclear whether depression and anxiety affect postoperative patient-reported outcomes (PRO). OBJECTIVES: The authors evaluated the impact of preoperative anxiety or depression on clinical and PRO in patients undergoing chest masculinization surgery. METHODS: Patients who underwent chest masculinization surgery within a 5-year period were reviewed. Demographics and clinical variables were abstracted from medical records. PRO of chest, nipple, and scar satisfaction were obtained postoperatively with the BODY-Q. Groups were stratified by preoperative anxiety, preoperative depression, both, or no history of mental health diagnosis. Univariate and multivariate analyses were performed. RESULTS: Of 135 patients with complete survey responses, 10.4% had anxiety, 11.9% depression, 20.7% both diagnoses, and 57.0% no diagnosis. Clinical data and outcomes were similar. Patients with preoperative depression correlated with lower satisfaction scores for scar appearance (P = .006) and were significantly more likely to report feelings of depression postoperatively (P = .04). There were no significant differences in chest or nipple satisfaction among groups. CONCLUSIONS: Although anxiety and depression are prevalent in gender minorities, we found no association with postoperative clinical outcomes. Patients with preoperative depression were more likely to report lower satisfaction with scar appearance and feelings of depression postoperatively. However, there were no differences in chest or nipple satisfaction. These results highlight the importance of perioperative mental health counseling but also suggest that patients can be satisfied with their results despite a coexisting mental health diagnosis.


Assuntos
Depressão , Parede Torácica , Humanos , Depressão/diagnóstico , Depressão/epidemiologia , Depressão/etiologia , Parede Torácica/cirurgia , Cicatriz , Ansiedade/diagnóstico , Ansiedade/epidemiologia , Ansiedade/etiologia , Medidas de Resultados Relatados pelo Paciente , Satisfação do Paciente
10.
West J Emerg Med ; 24(3): 552-565, 2023 May 02.
Artigo em Inglês | MEDLINE | ID: mdl-37278791

RESUMO

INTRODUCTION: The epidemic of gun violence in the United States (US) is exacerbated by frequent mass shootings. In 2021, there were 698 mass shootings in the US, resulting in 705 deaths and 2,830 injuries. This is a companion paper to a publication in JAMA Network Open, in which the nonfatal outcomes of victims of mass shootings have been only partially described. METHODS: We gathered clinical and logistic information from 31 hospitals in the US about 403 survivors of 13 mass shootings, each event involving greater than 10 injuries, from 2012-19. Local champions in emergency medicine and trauma surgery provided clinical data from electronic health records within 24 hours of a mass shooting. We organized descriptive statistics of individual-level diagnoses recorded in medical records using International Classification of Diseases codes, according to the Barell Injury Diagnosis Matrix (BIDM), a standardized tool that classifies 12 types of injuries within 36 body regions. RESULTS: Of the 403 patients who were evaluated at a hospital, 364 sustained physical injuries-252 by gunshot wound (GSW) and 112 by non-ballistic trauma-and 39 were uninjured. Fifty patients had 75 psychiatric diagnoses. Nearly 10% of victims came to the hospital for symptoms triggered by, but not directly related to, the shooting, or for exacerbations of underlying conditions. There were 362 gunshot wounds recorded in the Barell Matrix (1.44 per patient). The Emergency Severity Index (ESI) distribution was skewed toward higher acuity than typical for an emergency department (ED), with 15.1% ESI 1 and 17.6% ESI 2 patients. Semi-automatic firearms were used in 100% of these civilian public mass shootings, with 50 total weapons for 13 shootings (Route 91 Harvest Festival, Las Vegas. 24). Assailant motivations were reported to be associated with hate crimes in 23.1%. CONCLUSION: Survivors of mass shootings have substantial morbidity and characteristic injury distribution, but 37% of victims had no GSW. Law enforcement, emergency medical systems, and hospital and ED disaster planners can use this information for injury mitigation and public policy planning. The BIDM is useful to organize data regarding gun violence injuries. We call for additional research funding to prevent and mitigate interpersonal firearm injuries, and for the National Violent Death Reporting System to expand tracking of injuries, their sequelae, complications, and societal costs.


Assuntos
Armas de Fogo , Incidentes com Feridos em Massa , Transtornos Mentais , Ferimentos por Arma de Fogo , Humanos , Estados Unidos/epidemiologia , Ferimentos por Arma de Fogo/epidemiologia , Saúde Pública , Homicídio
12.
Mod Pathol ; 36(6): 100121, 2023 06.
Artigo em Inglês | MEDLINE | ID: mdl-36889065

RESUMO

We previously reported breast histopathologic features associated with testosterone therapy in transmasculine chest-contouring surgical specimens. During that study, we observed a high frequency of intraepidermal glands in the nipple-areolar complex (NAC) formed by Toker cells. This study reports Toker cell hyperplasia (TCH)-the presence of clusters of Toker cells consisting of at least 3 contiguous cells and/or glands with lumen formation-in the transmasculine population. Increased numbers of singly dispersed Toker cells were not considered TCH. Among the 444 transmasculine individuals, 82 (18.5%) had a portion of their NAC excised and available for evaluation. We also reviewed the NACs from 55 cisgender women who were aged <50 years old and had full mastectomies. The proportion of transmasculine cases with TCH (20/82; 24.4%) was 1.7-fold higher than cisgender women (8/55; 14.5%) but did not achieve significance (P = .20). However, in cases with TCH, the rate of gland formation is 2.4-fold higher in transmasculine cases, achieving borderline significance (18/82 vs 5/55; P = .06). Among transmasculine individuals, TCH was significantly more likely to be present in those with higher body mass index (P = .03). A subset of 5 transmasculine and 5 cisgender cases were stained for estrogen receptor (ER), progesterone receptor (PR), human epidermal growth factor receptor 2 (HER2), androgen receptor (AR), cytokeratin 7, and Ki67. All 10 cases were cytokeratin 7+ and Ki67-; 9 out of 10 cases were AR+. Toker cells in transmasculine cases demonstrated variable expression of ER, PR, and HER2. For cisgender cases, Toker cells were consistently ER+, PR-, and HER2-. In conclusion, there is a higher rate of TCH in the transmasculine than cisgender population, particularly among transmasculine individuals with high body mass index and taking testosterone. To our knowledge, this is the first study to demonstrate that Toker cells are AR+. Toker cell features display variable ER, PR, and HER2 immunoreactivity. The clinical significance of TCH in the transmasculine population remains to be elucidated.


Assuntos
Neoplasias da Mama , Mamilos , Humanos , Feminino , Pessoa de Meia-Idade , Mamilos/patologia , Hiperplasia/patologia , Queratina-7 , Antígeno Ki-67 , Testosterona , Neoplasias da Mama/patologia
14.
JAMA Netw Open ; 5(5): e2213737, 2022 05 02.
Artigo em Inglês | MEDLINE | ID: mdl-35622366

RESUMO

Importance: Civilian public mass shootings (CPMSs) in the US result in substantial injuries. However, the types and consequences of these injuries have not been systematically described. Objective: To describe the injury characteristics, outcomes, and health care burden associated with nonfatal injuries sustained during CPMSs and to better understand the consequences to patients, hospitals, and society at large. Design, Setting, and Participants: This retrospective case series of nonfatal injuries from 13 consecutive CPMSs (defined as ≥10 injured individuals) from 31 hospitals in the US from July 20, 2012, to August 31, 2019, used data from trauma logs and medical records to capture injuries, procedures, lengths of stay, functional impairment, disposition, and charges. A total of 403 individuals treated in hospitals within 24 hours of the CPMSs were included in the analysis. Data were analyzed from October 27 to December 5, 2021. Exposures: Nonfatal injuries sustained during CPMSs. Main Outcomes and Measures: Injuries and diagnoses, treating services, procedures, hospital care, and monetary charges. Results: Among the 403 individuals included in the study, the median age was 33.0 (IQR, 24.5-48.0 [range, 1 to >89]) years, and 209 (51.9%) were women. Among the 386 patients with race and ethnicity data available, 13 (3.4%) were Asian; 44 (11.4%), Black or African American; 59 (15.3), Hispanic/Latinx; and 270 (69.9%), White. Injuries included 252 gunshot wounds (62.5%) and 112 other injuries (27.8%), and 39 patients (9.7%) had no physical injuries. One hundred seventy-eight individuals (53.1%) arrived by ambulance. Of 494 body regions injured (mean [SD], 1.35 [0.68] per patient), most common included an extremity (282 [57.1%]), abdomen and/or pelvis (66 [13.4%]), head and/or neck (65 [13.2%]), and chest (50 [10.1%]). Overall, 147 individuals (36.5%) were admitted to a hospital, 95 (23.6%) underwent 1 surgical procedure, and 42 (10.4%) underwent multiple procedures (1.82 per patient). Among the 252 patients with gunshot wounds, the most common initial procedures were general and trauma surgery (41 [16.3%]) and orthopedic surgery (36 [14.3%]). In the emergency department, 148 of 364 injured individuals (40.7%) had 199 procedures (1.34 per patient). Median hospital length of stay was 4.0 (IQR, 2.0-7.5) days; for 50 patients in the intensive care unit, 3.0 (IQR, 2.0-8.0) days (13.7% of injuries and 34.0% of admissions). Among 364 injured patients, 160 (44.0%) had functional disability at discharge, with 19 (13.3%) sent to long-term care. The mean (SD) charges per patient were $64 976 ($160 083). Conclusions and Relevance: Civilian public mass shootings cause substantial morbidity. For every death, 5.8 individuals are injured. These results suggest that including nonfatal injuries in the overall burden of CPMSs may help inform public policy to prevent and mitigate the harm caused by such events.


Assuntos
Ferimentos por Arma de Fogo , Adulto , Dor no Peito , Atenção à Saúde , Serviço Hospitalar de Emergência , Etnicidade , Feminino , Humanos , Masculino , Estudos Retrospectivos , Ferimentos por Arma de Fogo/epidemiologia , Ferimentos por Arma de Fogo/terapia
15.
Nature ; 603(7903): 926-933, 2022 03.
Artigo em Inglês | MEDLINE | ID: mdl-35296864

RESUMO

White adipose tissue, once regarded as morphologically and functionally bland, is now recognized to be dynamic, plastic and heterogenous, and is involved in a wide array of biological processes including energy homeostasis, glucose and lipid handling, blood pressure control and host defence1. High-fat feeding and other metabolic stressors cause marked changes in adipose morphology, physiology and cellular composition1, and alterations in adiposity are associated with insulin resistance, dyslipidemia and type 2 diabetes2. Here we provide detailed cellular atlases of human and mouse subcutaneous and visceral white fat at single-cell resolution across a range of body weight. We identify subpopulations of adipocytes, adipose stem and progenitor cells, vascular and immune cells and demonstrate commonalities and differences across species and dietary conditions. We link specific cell types to increased risk of metabolic disease and provide an initial blueprint for a comprehensive set of interactions between individual cell types in the adipose niche in leanness and obesity. These data comprise an extensive resource for the exploration of genes, traits and cell types in the function of white adipose tissue across species, depots and nutritional conditions.


Assuntos
Tecido Adiposo Branco , Atlas como Assunto , Diabetes Mellitus Tipo 2 , Resistência à Insulina , Doenças Metabólicas , Tecido Adiposo/metabolismo , Tecido Adiposo Branco/metabolismo , Adiposidade , Animais , Diabetes Mellitus Tipo 2/metabolismo , Humanos , Camundongos , Obesidade/metabolismo
16.
Front Genet ; 12: 693952, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34539735

RESUMO

The European Society of Human Genetics (ESHG) was founded in 1967 as a professional organisation for members working in genetics in clinical practice, research and education. The Society seeks the integration of scientific research and its implementation into clinical practice and the education of specialists and the public in all areas of medical and human genetics. The Society works to do this through many approaches, including educational sessions at the annual conference; training courses in general and specialist areas of genetics; an online resource of educational materials (EuroGEMS); and a mentorship scheme. The ESHG Education Committee is implementing new approaches to expand the reach of its educational activities and portfolio. With changes in technology, appreciation of the utility of genomics in healthcare and the public's and patients' increased awareness of the role of genomics, this review will summarise how the ESHG is adapting to deliver innovative educational activity.

17.
Front Genet ; 12: 621683, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34305996

RESUMO

The current COVID-19 pandemic has unfortunately resulted in many significant concerns for individuals with genetic disorders and their relatives, regarding the viral infection and, particularly, its specific implications and additional advisable precautions for individuals affected by genetic disorders. To address this, the resulting requirement for guidance and information for the public and for genetics professionals was discussed among colleagues nationally, on the ScotGEN Steering Committee, and internationally on the Education Committee of the European Society of Human Genetics (ESHG). It was agreed that the creation of an online hub of genetics-related COVID-19 information resources would be particularly helpful. The proposed content, divided into a web page for professionals and a page for patients, was discussed with, and approved by, genetics professionals. The hub was created and provided online at www.scotgen.org.uk and linked from the ESHG's educational website for genetics and genomics, at www.eurogems.org. The new hub provides links, summary information and representative illustrations for a wide range of selected international resources. The resources for professionals include: COVID-19 research related hubs provided by Nature, Science, Frontiers, and PubMed; clinical guidelines; the European Centre for Disease Prevention and Control; the World Health Organisation; and molecular data sources including coronavirus 3D protein structures. The resources for patients and families include links to many accessible sources of support and relevant information. Since the launch of the pages, the website has received visits from over 50 countries worldwide. Several genetics consultants have commented on usefulness, clarity, readability, and ease of navigation. Visits have originated most frequently in the United Kingdom, Kuwait, Hong Kong, Moldova, United States, Philippines, France, and Qatar. More links have been added since the launch of the hub to include additional international public health and academic resources. In conclusion, an up-to-date online hub has been created and made freely available for healthcare professionals, patients, relatives and the public, providing categorised easily navigated links to a range of worldwide resources related to COVID-19. These pages are receiving a rapidly growing number of return visits and the authors continue to maintain and update the pages' content, incorporating new developments in this field of enormous worldwide importance.

18.
Cell Metab ; 33(7): 1449-1465.e6, 2021 07 06.
Artigo em Inglês | MEDLINE | ID: mdl-34038712

RESUMO

The lymphatic vasculature plays important roles in the physiology of the organs in which it resides, though a clear mechanistic understanding of how this crosstalk is mediated is lacking. Here, we performed single-cell transcriptional profiling of human and mouse adipose tissue and found that lymphatic endothelial cells highly express neurotensin (NTS/Nts). Nts expression is reduced by cold and norepinephrine in an α-adrenergic-dependent manner, suggesting a role in adipose thermogenesis. Indeed, NTS treatment of brown adipose tissue explants reduced expression of thermogenic genes. Furthermore, adenoviral-mediated overexpression and knockdown or knockout of NTS in vivo reduced and enhanced cold tolerance, respectively, an effect that is mediated by NTSR2 and ERK signaling. Inhibition of NTSR2 promoted energy expenditure and improved metabolic function in obese mice. These data establish a link between adipose tissue lymphatics and adipocytes with potential therapeutic implications.


Assuntos
Células Endoteliais/metabolismo , Vasos Linfáticos/citologia , Neurotensina/fisiologia , Termogênese , Animais , Metabolismo Energético/efeitos dos fármacos , Metabolismo Energético/genética , Vasos Linfáticos/metabolismo , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Knockout , Camundongos Obesos , Neurotensina/genética , Neurotensina/metabolismo , Neurotensina/farmacologia , Transdução de Sinais/genética , Termogênese/efeitos dos fármacos , Termogênese/genética
19.
Mod Pathol ; 34(1): 85-94, 2021 01.
Artigo em Inglês | MEDLINE | ID: mdl-32939016

RESUMO

Testosterone therapy (TT) is administered to enhance masculinization in transgender individuals. The long-term effect of exogenous testosterone on breast tissues remains unclear. Our study evaluated the modulation of breast morphology by TT in transgender individuals with special attention to duration of TT. We reviewed 447 breast surgical specimens from gender affirming chest-contouring surgery, and compared histopathological findings including degree of lobular atrophy, and atypical and non-atypical proliferations between subjects who did (n = 367) and did not (n = 79) receive TT. TT for one patient was unknown. TT for >12 months was associated with seven histopathological features. Longer duration of TT was significantly associated with higher degrees of lobular atrophy (p < 0.001). This relationship remained significant after accounting for age at surgery, ethnicity, body mass index, and presurgical oophorectomy (adjusted p < 0.001). Four types of lesions were more likely to be absent in breast tissues exposed to longer durations of TT: cysts (median = 16.2 months; p < 0.01; adjusted p = 0.01), fibroadenoma (median = 14.8 months; p = 0.02; adjusted p = 0.07), pseudoangiomatous stromal hyperplasia (median = 17.0 months; p < 0.001; adjusted p < 0.001), and papillomas (median = 14.7 months; p = 0.04; adjusted p = 0.20). Columnar cell change and mild inflammation were also less likely to occur in subjects receiving TT (p < 0.05), but were not linked to the duration of TT. Atypia and ductal carcinoma in situ were detected in 11 subjects (2.5%) all of whom received TT ranging from 10.1 to 64.1 months. The incidental findings of high-risk lesions and carcinoma as well as the risk of cancer in residual breast tissue after chest-contouring surgery warrant the consideration of culturally sensitive routine breast cancer screening protocols for transgender men and masculine-centered gender nonconforming individuals. Long-term follow-up studies and molecular investigations are needed to understand the breast cancer risk of transgender individuals who receive TT.


Assuntos
Androgênios/efeitos adversos , Doenças Mamárias/induzido quimicamente , Mama/efeitos dos fármacos , Testosterona/efeitos adversos , Adulto , Feminino , Humanos , Masculino , Estudos Retrospectivos , Cirurgia de Readequação Sexual , Pessoas Transgênero
20.
Hum Mutat ; 41(12): 2021-2027, 2020 12.
Artigo em Inglês | MEDLINE | ID: mdl-32906220

RESUMO

There is a well-recognized growing need for improved access to online genetic and genomics education for professionals, students, teachers, and the public. Numerous individual online genetic and genomic educational resources have been developed, but many are difficult to identify or locate when required. Consequently, an easily navigated website, European Society of Human Genetics (ESHG) Genetic Educational Materials and Sources (https://www.EuroGEMS.org), has recently been created, on behalf of the ESHG, by the authors. It facilitates access by a wide variety of target audience types and levels to a broad range of 110 selected, free, high-quality educational online genetic and genomic resources around the world, including several in languages other than English. The website has been endorsed by the ESHG, directly linked from that society's web pages, and has now been used in over 105 countries.


Assuntos
Genética/educação , Genômica/educação , Internet , Internacionalidade
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