Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 15 de 15
Filtrar
1.
Sex Reprod Healthc ; 35: 100818, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-36739823

RESUMO

INTRODUCTION: Contraception is key for maternal well-being in the postpartum period. This study aims to evaluate the impact of prenatal counseling on postpartum contraception uptake. METHODS: This cohort study assessed pregnant patients who received their prenatal care at our outpatient obstetrics clinic in 2021-2022. The intervention group received counseling at their 28- and 36-week prenatal visits with a language-congruent paper handout and a review of methods by the provider. The non-intervention group was seen in the outpatient clinic prior to implementation. Intervention patients were surveyed on postpartum days 1-3 to evaluate recollection of counseling and intent to start contraception. Data on uptake and type of contraception chosen was collected for both groups at 6- and 12-weeks postpartum. Our primary outcome was uptake of any type of contraception at the 6-week postpartum visit. RESULTS: A total of 126 patients over two five-month intervals (64 intervention and 62 non-intervention) were included in analysis. Baseline patient characteristics were similar between the groups, including predominance of public insurance. Groups differed by race/ethnicity, with higher rates of Hispanic patients in the intervention group. Patients in the intervention group had higher contraception uptake within six weeks of delivery (OR 2.61, p = 0.0287). Forty-three patients in the intervention group desired postpartum contraception (including permanent methods, such as tubal ligation), although only 21 (48.8 %) received their desired method. There were no differences in method chosen between the non-intervention and intervention groups (p = 0.15). CONCLUSIONS: Structured prenatal counseling regarding contraceptive options can improve the timely initiation of contraception.


Assuntos
Anticoncepcionais , Serviços de Planejamento Familiar , Feminino , Humanos , Gravidez , Estudos de Coortes , Anticoncepção/métodos , Comportamento Contraceptivo , Aconselhamento/métodos , Serviços de Planejamento Familiar/métodos , Período Pós-Parto , Terceiro Trimestre da Gravidez
2.
Female Pelvic Med Reconstr Surg ; 22(5): 364-8, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27403755

RESUMO

OBJECTIVE: The aim of this study was to compare perioperative complications by route of hysterectomy before and after the introduction of robotic surgery. METHODS: This is an ancillary analysis of a multicenter, retrospective cohort study with historical controls through the Fellows' Pelvic Research Network. Hysterectomies performed for benign conditions were collected prior to introduction of the robot (prerobot) and the year after introduction of the robot (postrobot) at each institution. To obtain a representative annual case distribution for each institution, a maximum of 20 cases per month were selected using stratified random sampling. Patient demographics and intraoperative and postoperative complication data were collected. RESULTS: One thousand four hundred forty cases were included in this study, 732 in the prerobot and 708 in the postrobot period. Intraoperative complications in the prerobot group were highest in the abdominal group (7.4%) followed by vaginal (3.9%) and laparoscopic (3.7%) groups. Postoperative complications were higher in the vaginal (8.3%) and abdominal (7.4%) groups compared with laparoscopic (1.8%) groups (P = 0.03), because of a higher proportion of infections. In the postrobot period, intraoperative complications were lower in the vaginal (2.8%), robotic (3%), and laparoscopic (4.6%) groups compared with abdominal (10.8%) (P = 0.04). Postoperative complications were lowest in the vaginal (5.1%), laparoscopic (3.6%), and robotic (3%) approaches compared with the abdominal (13.9%) approach (P = 0.003). CONCLUSIONS: Vaginal hysterectomy has comparable rates of perioperative complications when compared with robotic and laparoscopic approaches and should be considered as a primary surgical approach in the growing armamentarium of minimally invasive approaches for hysterectomy for benign conditions.


Assuntos
Histerectomia Vaginal/efeitos adversos , Laparoscopia/efeitos adversos , Complicações Pós-Operatórias , Procedimentos Cirúrgicos Robóticos/efeitos adversos , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Complicações Intraoperatórias , Pessoa de Meia-Idade , Estudos Retrospectivos , Adulto Jovem
3.
Female Pelvic Med Reconstr Surg ; 21(6): 348-54, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26506164

RESUMO

OBJECTIVES: Approaches for performing sacrocolpopexy (laparotomy, laparoscopy, and robotically assisted) differ with regard to length of surgery, postoperative pain, and cosmetic appearance of skin incisions. The aim of our study is to better understand what factors influence patient preferences for surgical approach. METHODS: A cross-sectional study was performed using a survey. Females 18 years or older presenting to gynecologic offices were asked to complete a survey that included photographs of patient incisions 6 weeks postoperatively along with a schematic representation of each incision type (laparotomy with low transverse incision, traditional laparoscopy, and robotically assisted). Patients were first asked to rank each incision based on cosmetic appearance only. They were next given varying clinical scenarios associated with each surgical approach and asked if their preference of incision changed. A sample size of 90 subjects was needed in order to detect a 30% difference in incision preference based on appearance with an α of 0.05 and 80% power. RESULTS: One hundred fifty patients completed the survey. Based on cosmetic appearance alone, 70% chose laparoscopic surgery, 23% chose open, and 7% chose the robotic approach (P < 0.0001). The majority of the subjects would not change their incision preference of laparoscopy based on differing scenarios of postoperative pain (62.6%), length of surgery (65.3%), and length of hospital stay (73.6%). When asked to rank factors important in decision making, complication rate (53.9%) and surgeon experience with the procedure (32.8%) were ranked as most important. CONCLUSIONS: Based on cosmetic appearance, patients prefer the laparoscopic approach for abdominal sacrocolpopexy for pelvic organ prolapse surgery. However, complication rates and surgeon experience with the procedure are important factors in the patient's decision making.


Assuntos
Estética , Procedimentos Cirúrgicos em Ginecologia/métodos , Preferência do Paciente , Prolapso de Órgão Pélvico/cirurgia , Procedimentos Cirúrgicos Robóticos/métodos , Adulto , Estudos Transversais , Tomada de Decisões , Feminino , Humanos , Laparoscopia , Pessoa de Meia-Idade , Fatores de Risco , Inquéritos e Questionários
4.
FP Essent ; 430: 29-32, 2015 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-25756375

RESUMO

Immigration has brought millions of individuals into the United States over the past decade. The Centers for Disease Control and Prevention and the US Public Health Service are charged with ensuring that immigrants who enter do not pose a public health risk. Health examinations and immunization regimens are required for individuals wishing to live in the United States. Many immigrants and refugees are exposed to communicable diseases not routinely encountered in the United States These include helminthic infections, tuberculosis, malaria, and other infections. Zoonotic infections, such as influenza A, and novel coronavirus infections also are of increasing concern because of population mobility.

5.
Am J Obstet Gynecol ; 212(2): 196.e1-6, 2015 02.
Artigo em Inglês | MEDLINE | ID: mdl-25068556

RESUMO

OBJECTIVE: We sought to compare the proportion of benign hysterectomies performed vaginally and the mean number of hysterectomies with resident involvement by route before and after robot implementation. STUDY DESIGN: This multicenter, retrospective cohort study using nonsynchronous controls was conducted through the Society of Gynecologic Surgeons Fellows' Pelvic Research Network. The route of hysterectomy for benign disease was compared for 1-year periods before (prerobot) and after (postrobot) robotic introduction at 4 academic institutions. We reviewed medical records and recorded patient demographics, hysterectomy approach, preoperative and postoperative diagnosis, and resident involvement. RESULTS: In all, 1440 hysterectomies were included: 732 in the prerobot group and 708 in the postrobot group. Median age was 46 years and mean body mass index was 29.5 (standard deviation, 6.9). The proportion of hysterectomies performed via the vaginal route decreased from 42.5% prerobot to 30.5% postrobot (P < .0001) and via the abdominal route from 22.1% prerobot to 16.5% postrobot (P = .001). The proportion of hysterectomies performed laparoscopically increased from 1.6% prerobot to 11.9% postrobot (P < .0001). At a mean of 2.3 years after introduction of the robot into an institution, hysterectomies performed using robotic assistance accounted for 23.3% of hysterectomies for benign disease. Mean uterine weight was similar in the prerobot and postrobot groups. Resident involvement in all hysterectomies done via all routes other than robotic increased from 81.0% prerobot to 88.6% postrobot; however, residents were involved in only 58.9% of robotic hysterectomies. CONCLUSION: The proportion of hysterectomies performed vaginally has significantly decreased since the adoption of robotic technology at institutions included in this study. The proportion of hysterectomies with resident involvement is lower with a robotic approach than any other route.


Assuntos
Educação de Pós-Graduação em Medicina/métodos , Histerectomia Vaginal/métodos , Histerectomia/métodos , Internato e Residência/métodos , Procedimentos Cirúrgicos Robóticos/métodos , Doenças Uterinas/cirurgia , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos de Coortes , Feminino , Humanos , Histerectomia/educação , Histerectomia Vaginal/educação , Pessoa de Meia-Idade , Estudos Retrospectivos , Procedimentos Cirúrgicos Robóticos/educação , Adulto Jovem
6.
Int Urogynecol J ; 25(8): 1031-6, 2014 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-24464470

RESUMO

OBJECTIVES: To identify risk factors associated with lower urinary tract injury at the time of performing hysterectomy for benign indications. METHODS: We conducted a multi-center case-control study of women undergoing hysterectomy for benign disease. Cases were identified via ICD-9 codes for lower urinary tract injury at the time of hysterectomy from 2007 to 2011: controls were two subsequent hysterectomies following the index case in the same institution that did not have lower urinary tract injury. Logistic regression was used to perform univariate and multivariate comparisons between groups. RESULTS: At 7 centers, 135 cases and 270 controls were identified. Cases comprised 118 bladder injuries and 25 ureteral injuries; 8 women had both bladder and ureteral injury. Bladder injury was associated with a history of prior cesarean section OR 2.9 (95% CI 1.7-5), surgery by a general obstetrician and gynecologist OR 2.4 (95% CI 1.2-5.2), and total abdominal hysterectomy OR1.9 (95%CI 1.06-3.4). Ureteral injury was more likely among women who underwent laparoscopic-assisted vaginal hysterectomy (LAVH) OR 10.4 (95%CI 2.3-46.6) and total abdominal hysterectomy (TAH) OR 4.7 (95% CI 1.4-15.6). CONCLUSION: Bladder injury at the time of benign hysterectomy is associated with a prior history of Cesarean section and TAH as well as surgery by generalist OB-GYN; ureteral injury is associated with LAVH and TAH.


Assuntos
Histerectomia Vaginal , Complicações Intraoperatórias/epidemiologia , Uretra/lesões , Bexiga Urinária/lesões , Adulto , Estudos de Casos e Controles , Cesárea , Feminino , Ginecologia , Humanos , Histerectomia Vaginal/métodos , Laparoscopia , Pessoa de Meia-Idade , Obstetrícia , Estudos Retrospectivos , Fatores de Risco
7.
J Reprod Med ; 57(1-2): 89-92, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22324278

RESUMO

BACKGROUND: Ureteral injuries are known complications of urogynecologic surgery. Until now, ureteral reimplantation with laparotomy has been used in cases in which ureteral stenting of distal obstruction was unsuccessful. CASE: We report a case of a 74-year-old woman with a recognized right ureteral injury after vaginal reconstructive surgery that failed ureteral stenting to relieve the obstruction and who presented with ureteral stricture and mild hydronephrosis 6 weeks postoperatively. Ureteroscopy with endoscopic balloon dilation reduced the stricture successfully. The patient remains asymptomatic, with normal renal sonogram, 6 months after the procedure. CONCLUSION: Endoscopic balloon dilation is an effective technique that can be used for the management of ureteral strictures after urogynecologic surgery and avoids further surgical intervention.


Assuntos
Cateterismo/métodos , Hidronefrose/prevenção & controle , Complicações Pós-Operatórias/terapia , Obstrução Ureteral/terapia , Idoso , Constrição Patológica , Endoscopia/métodos , Feminino , Humanos , Hidronefrose/etiologia , Histerectomia/efeitos adversos , Complicações Pós-Operatórias/etiologia , Procedimentos de Cirurgia Plástica/efeitos adversos , Resultado do Tratamento , Obstrução Ureteral/etiologia
8.
Obstet Gynecol ; 117(2 Pt 2): 436-437, 2011 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-21252780

RESUMO

BACKGROUND: Laceration of the iliac veins and their branches is a feared complication in abdominal sacral colpopexy. Hemorrhages can be extensive and difficult to control. CASE: We report a case of a patient who, while undergoing abdominal sacral colpopexy, was found to have confluence of the iliac veins at the level of the second sacral vertebra instead of the expected fourth lumbar to first sacral vertebral bodies. The intraoperative course had to be revised because of the increased risk of bleeding. The patient tolerated the procedure well and without any complications. CONCLUSION: With pelvic reconstructive surgery becoming more commonplace, knowledge of possible anomalous vessels is important because modification of planned surgical approach may be necessary to avoid short-term and long-term complications.


Assuntos
Colposcopia/métodos , Veia Ilíaca/anormalidades , Prolapso de Órgão Pélvico/cirurgia , Feminino , Humanos , Pessoa de Meia-Idade , Complicações Pós-Operatórias/prevenção & controle , Telas Cirúrgicas , Resultado do Tratamento
9.
Obstet Gynecol ; 116 Suppl 2: 562-564, 2010 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-20664455

RESUMO

BACKGROUND: Povidone-iodine, a surgical antiseptic, is associated with adverse side effects ranging from minor skin irritation to anaphylaxis, with symptoms occurring within minutes and up to 8 hours after contact. CASE: We report a case of a patient, with no history of allergy to povidone-iodine, who developed an allergic reaction 24 hours after intraoperative exposure to povidone-iodine, presenting with acute urinary retention secondary to extensive vulvar edema, which resolved after administration of antihistamines. CONCLUSION: Allergic reactions to povidone-iodine can be late in onset and, in vaginal surgeries, may present with atypical symptoms such as acute urinary retention secondary to vulvar edema. Prompt diagnosis and effective treatment requires strong clinical suspicion in patients presenting postoperatively with a known history of exposure.


Assuntos
Anti-Infecciosos Locais/efeitos adversos , Hipersensibilidade a Drogas/etiologia , Edema/induzido quimicamente , Povidona-Iodo/efeitos adversos , Retenção Urinária/etiologia , Doenças da Vulva/induzido quimicamente , Edema/tratamento farmacológico , Feminino , Antagonistas dos Receptores Histamínicos/uso terapêutico , Humanos , Pessoa de Meia-Idade , Fatores de Tempo , Retenção Urinária/tratamento farmacológico , Doenças da Vulva/tratamento farmacológico
10.
Am J Obstet Gynecol ; 196(4): 309.e1-4, 2007 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-17403399

RESUMO

OBJECTIVE: The purpose of this study was to determine the accuracy of rapid vaginal yeast detection assay compared with yeast cultures for the diagnosis of vulvovaginal candidiasis. STUDY DESIGN: This was a prospective study that involved 104 subjects, 34 asymptomatic women and 70 symptomatic women with vaginitis. Vaginal swabs were obtained from all subjects for wet mount, yeast culture, and the rapid yeast detection test. Overall, the prevalence rate was 39.4%, based on positive yeast cultures. The rapid yeast test performed by the physician was positive in 30 of 41 subjects with positive cultures and 13 of 63 subjects with negative cultures. RESULTS: The rapid yeast test had 73.1% sensitivity and 82.0% negative predictive value compared with the wet mount, which had 43.9% sensitivity and 70.9% negative predictive value. In symptomatic patients, the test had 77.4% sensitivity and 81% negative predictive value compared with wet mount, which had 51.6% sensitivity. Patient-performed test results were identical to the tests that were performed by the physicians. The cost of the rapid yeast test kit is estimated to be <$10, compared with a mean of $65 for the yeast culture. CONCLUSION: Rapid yeast detection assay is accurate and affordable compared with the gold standard yeast culture in the diagnosis of vulvovaginal candidiasis. Relative to the wet mount, it is more sensitive, cheaper, and accurate for the rapid diagnosis of vaginal yeast infection.


Assuntos
Candida/isolamento & purificação , Candidíase Vulvovaginal/diagnóstico , Candidíase Vulvovaginal/microbiologia , Técnicas de Cultura/métodos , Vagina/microbiologia , Adulto , Estudos de Casos e Controles , Feminino , Humanos , Microscopia , Pessoa de Meia-Idade , Micologia/métodos , Estudos Prospectivos , Valores de Referência , Sensibilidade e Especificidade , Índice de Gravidade de Doença , Esfregaço Vaginal
11.
Infect Dis Obstet Gynecol ; 2006: 95618, 2006.
Artigo em Inglês | MEDLINE | ID: mdl-17485816

RESUMO

OBJECTIVE: To determine if douching with Water Works device for 1 month can (1) lower or eliminate perceived vaginal odor by subject; (2) have any effects on vaginal ecosystem. METHODS: Ten women with perceived vaginal odor with or without discharge, douched every day for 4 weeks in an open-label, nonrandomized pilot study. Primary outcome measures included perceived vaginal odor by subject, lactobacilli score from Nugent slide, and acceptance of the Water Works douching system. Secondary outcome included the safety of using this douching device. RESULTS: At week 4, there was improvement in vaginal odor (P=.0006) and there was no significant change in lactobacilli score. CONCLUSION: Douching with Water Works device is associated with reduction or elimination of vaginal odor without adversely affecting the vaginal ecosystem.


Assuntos
Lactobacillus/crescimento & desenvolvimento , Vagina/microbiologia , Vagina/fisiologia , Ducha Vaginal , Vaginite/terapia , Adolescente , Adulto , Ecossistema , Feminino , Humanos , Lactobacillus/isolamento & purificação , Odorantes , Projetos Piloto , Resultado do Tratamento , Ducha Vaginal/efeitos adversos , Ducha Vaginal/instrumentação , Ducha Vaginal/estatística & dados numéricos
12.
Am J Transplant ; 5(4 Pt 1): 694-701, 2005 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-15760392

RESUMO

Chronic pathological changes in transplanted lungs are unique because they center on the airways. We examined the relative role of MHC class I and II antigens in causing bronchial pathology in orthotopic lung transplants to rats maintained on cyclosporin A (CsA). Transplants mismatched for MHC class II antigens had significantly more peri-bronchiolar infiltrates than MHC class I incompatible transplants. No significant increase in infiltrates was found in lung transplants incompatible for MHC class I plus II antigens compared to MHC class II antigens alone. Immunohistochemistry demonstrated that MHC class II antigen expression was confined to macrophages in MHC class I incompatible transplants, but was upregulated on bronchial epithelium in transplants with MHC class II incompatibilities. Vascular endothelium was notably devoid of MHC class II antigen expression in all transplants. However, both peri-bronchial and peri-vascular infiltrates were frequently cuffed by alveolar macrophages and type II pneumocytes that expressed MHC class II antigens. PCR analysis demonstrated that IFN-gamma and regulated on activation, normal T cells expressed and secreted (RANTES) were upregulated in MHC class II incompatible transplants. Thus, MHC class II incompatible orthotopic lung transplants in rats maintained on CsA immunosuppression undergo a bronchiolcentric upregulation of alloantigens.


Assuntos
Brônquios/imunologia , Antígenos de Histocompatibilidade Classe II/imunologia , Histocompatibilidade/imunologia , Leucócitos Mononucleares/imunologia , Transplante de Pulmão , Animais , Animais Congênicos , Brônquios/patologia , Quimiocina CCL5/metabolismo , Feminino , Interferon gama/metabolismo , Pulmão/metabolismo , Masculino , Ratos , Transplante Homólogo
13.
Hum Immunol ; 65(11): 1273-80, 2004 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-15556677

RESUMO

Polyclonal antithymocyte globulin preparations contain antibodies with reactivity to endothelial cells. Therefore, we investigated whether treatment with this reagent caused complement deposition in human cardiac transplants. Frozen tissue was available from endomyocardial biopsies of 75 patients, who were transplanted between April 1995 and April 2000. Nine of these patients were converted from cyclosporin A (CsA) to horse antithymocyte globulin (ATGAM) in the first month after transplantation. All of the biopsies were stained by immunofluorescence for C4d as evidence of activation of the classical pathway of complement. In addition, biopsies from patients treated with ATGAM and control patients were stained for deposition of horse immunoglobulin (Ig)G. All nine patients who received ATGAM had deposition of horse IgG and C4d. Two color stains demonstrated that the horse IgG colocalized with the C4d staining. No staining for horse IgG or C4d was evident in biopsies obtained before ATGAM treatment. Likewise, no staining for horse IgG was detected in seven control patients who had C4d staining. Most patients treated with ATGAM had no histologic evidence of rejection, but did have myocyte damage and macrophage infiltration. Thus prophylactic treatment with ATGAM is associated with the deposition of horse IgG and activation of complement in the transplant.


Assuntos
Soro Antilinfocitário/imunologia , Proteínas do Sistema Complemento/metabolismo , Transplante de Coração/imunologia , Animais , Biópsia , Movimento Celular/imunologia , Complemento C4b/imunologia , Complemento C4b/metabolismo , Proteínas do Sistema Complemento/imunologia , Rejeição de Enxerto/imunologia , Transplante de Coração/patologia , Cavalos , Humanos , Imunoglobulina G/imunologia , Imunoglobulina G/metabolismo , Isoanticorpos/sangue , Isoanticorpos/imunologia , Leucócitos Mononucleares/imunologia , Miocárdio/imunologia , Miocárdio/metabolismo , Miocárdio/patologia , Fragmentos de Peptídeos/imunologia , Fragmentos de Peptídeos/metabolismo , Fatores de Tempo
14.
Am J Transplant ; 4(3): 326-34, 2004 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-14961984

RESUMO

Alloantibodies (AlloAbs) are a clinically significant component of the immune response to organ transplants. In our experimental model, B10.A (H-2a) cardiac transplants survived significantly longer in C57BL/6 (H-2b) immunoglobulin knock-out (IgKO) recipients than in their wild-type (WT) counterparts. Passive transfer of a single 50-200-microg dose of complement-activating IgG2b AlloAbs to IgKO recipients reconstituted acute rejection of cardiac allografts. Although passive transfer of a subthreshold dose of 25 microg of IgG2b or a single 100-200-microg dose of non-complement-activating IgG1 AlloAbs did not restore acute rejection to IgKO recipients, a combination of these AlloAbs did cause acute graft rejection. Histologically, rejection was accompanied by augmented release of von Willebrand factor from endothelial cells. IgG1 AlloAbs did not activate complement on their own and did not augment complement activation by IgG2b AlloAbs. However, IgG1 AlloAbs stimulated cultured mouse endothelial cells to produce monocyte chemotactic protein 1 (MCP-1) and neutrophil chemoattractant growth-related oncogene alpha (KC). TNF-alpha augmented IgG1 induced secretion of MCP-1 and KC. These findings indicate that non-complement-activating AlloAbs can augment injury to allografts by complement-activating AlloAbs. Non-complement-activating AlloAbs stimulate endothelial cells to produce chemokines and this effect is augmented in the milieu of proinflammatory cytokines.


Assuntos
Proteínas do Sistema Complemento/imunologia , Rejeição de Enxerto/imunologia , Transplante de Coração/imunologia , Animais , Anticorpos Monoclonais/imunologia , Anticorpos Monoclonais/farmacologia , Sinergismo Farmacológico , Rejeição de Enxerto/induzido quimicamente , Imunoglobulina G/imunologia , Imunoglobulina G/farmacologia , Isoanticorpos/imunologia , Camundongos
15.
J Immunol ; 169(8): 4620-7, 2002 Oct 15.
Artigo em Inglês | MEDLINE | ID: mdl-12370401

RESUMO

The lung is known to be particularly susceptible to complement-mediated injury. Both C5a and the membrane attack complex (MAC), which is formed by the terminal components of complement (C5b-C9), can cause acute pulmonary distress in nontransplanted lungs. We used C6-deficient rats to investigate whether MAC causes injury to lung allografts. PVG.R8 lungs were transplanted orthotopically to MHC class I-incompatible PVG.1U recipients. Allografts from C6-sufficient (C6(+)) donors to C6(+) recipients were rejected with an intense vascular infiltration and diffuse alveolar hemorrhage 7 days after transplantation (n = 5). Ab and complement (C3d) deposition was accompanied by extensive vascular endothelial injury and intravascular release of von Willebrand factor. In contrast, lung allografts from C6-deficient (C6(-)) donors to C6(-) recipients survived 13-17 days (n = 5). In the absence of C6, perivascular mononuclear infiltrates of ED1(+) macrophages and CD8(+) T lymphocytes were present 7 days after transplantation, but vascular endothelial cells were quiescent, with minimal von Willebrand factor release and no evidence of alveolar hemorrhage or edema. Lung allografts were performed from C6(-) donors to C6(+) recipients (n = 5) and from C6(+) donors to C6(-) recipients (n = 5) to separate the effects of systemic and local C6 production. Lungs transplanted from C6(+) donors to C6(-) recipients had increased alveolar macrophages and capillary injury. C6 production by lung allografts was demonstrated at the mRNA and protein levels. These results demonstrate that MAC causes vascular injury in lung allografts and that the location of injury is dependent on the source of C6.


Assuntos
Complemento C6/fisiologia , Complexo de Ataque à Membrana do Sistema Complemento/fisiologia , Endotélio Vascular/imunologia , Endotélio Vascular/patologia , Rejeição de Enxerto/imunologia , Rejeição de Enxerto/patologia , Transplante de Pulmão/imunologia , Transplante de Pulmão/patologia , Doença Aguda , Animais , Animais Congênicos , Movimento Celular/genética , Movimento Celular/imunologia , Complemento C3d/metabolismo , Complemento C6/biossíntese , Complemento C6/deficiência , Complemento C6/genética , Complexo de Ataque à Membrana do Sistema Complemento/deficiência , Complexo de Ataque à Membrana do Sistema Complemento/genética , Feminino , Rejeição de Enxerto/genética , Sobrevivência de Enxerto/genética , Sobrevivência de Enxerto/imunologia , Antígenos de Histocompatibilidade/genética , Antígenos de Histocompatibilidade Classe I/genética , Imunoglobulina G/metabolismo , Imunoglobulina M/metabolismo , Isoanticorpos/biossíntese , Masculino , Hemorragia Pós-Operatória/genética , Hemorragia Pós-Operatória/imunologia , Hemorragia Pós-Operatória/patologia , Hemorragia Pós-Operatória/prevenção & controle , Alvéolos Pulmonares/imunologia , Alvéolos Pulmonares/patologia , Ratos , Ratos Endogâmicos
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA