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1.
J Am Coll Emerg Physicians Open ; 5(3): e13185, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38784938

RESUMO

Objective: Musculoskeletal pain complaints are common in the emergency department (ED). The objective of this study was to determine the impact of physical therapy (PT) in the ED on pain and ED return. Methods: A prospective cohort study was performed with those presenting to the ED or Urgent Care at a single academic center for musculoskeletal pain between November 2020 and December 2022. All patients were referred to outpatient PT. During business hours, PT was available to begin treatment in the ED. Long-term follow-up was performed using the electronic health records. Statistical analyses included descriptive and non-parametric pairwise comparisons, Fisher's exact test, and multiple logistic regression. Results: A total of 974 patients were included in the study with 553 completing optional surveys. Back pain was most common. Pain was reduced at ED discharge for all patients, but pain was significantly improved if patients saw PT in the ED. Patients in the ED were less likely to keep their outpatient PT appointments than others, but importantly, patients who saw PT in the ED were less likely to return to the ED for the same complaint up to 1 year later. Those who kept PT appointments were likely to establish or maintain healthcare outside emergency services later. Conclusions: Initiating PT in this ED reduces pain at ED discharge. However, patients who utilized PT were more likely to later utilize health care resources outside of emergency services. Those who saw PT in this ED were less likely to return to the ED for the same complaint up to 1 year later.

2.
J Sports Med Phys Fitness ; 64(1): 73-77, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37902807

RESUMO

BACKGROUND: Mass gatherings are a commonly occurring event, especially on college campuses. Any mass gathering gives rise to possible small- or large-scale emergencies. Mass gathering medicine is an integral part of emergency medical services (EMS). An assessment was performed to see if collegiate stadiums possess capabilities for advanced medical care when emergencies arise among attendees. METHODS: A standardized survey was sent by a single researcher to all National Collegiate Athletic Association (NCAA) Division I programs regarding medical services they currently have in place at their stadiums during Saturday football games. A follow-up inquiry was made at each local community office of emergency management (OEM) to confirm responses or obtain missing data. RESULTS: Only 21.5% (N.=17) of stadium facilities reported having physicians solely dedicated to the care of fans and other support staff. Most stadiums (N.=70, 88.6%) offered ALS services for their fans, with the remaining ALS services provided by paramedics (N.=46, 58.2%) or registered nurses (N.=7, 8.9%). The remaining stadiums only offered BLS services (N.=6, 7.6%) or basic first aid (N.=3, 3.8%). One stadium offered athletic trainer services to its fan in addition to the ALS care. CONCLUSIONS: Given the potential for a large influx of patients at sporting events, almost all stadiums have some degree of prehospital emergency care on site. More than a 10% of stadiums lacked ALS services and very few stadiums have physicians on site. Many stadiums were unaware of the resources available during these events. The ability to have ALS services on site who can provide rapid, advanced care to spectators is important due to likely delays in 911 response. At a minimum ALS services should be available within the stadium with consideration of physician coverage as well.


Assuntos
Serviços Médicos de Emergência , Futebol Americano , Instalações Esportivas e Recreacionais , Humanos , Emergências , Serviços Médicos de Emergência/organização & administração , Instalações Esportivas e Recreacionais/organização & administração
3.
Health Justice ; 10(1): 37, 2022 Dec 27.
Artigo em Inglês | MEDLINE | ID: mdl-36574100

RESUMO

In the incarcerated population, the largest ethnic and racial group is Black people. Heart disease is known as the leading causes of death in the United States which can lead to cardiac arrest. Layperson cardiopulmonary resuscitation (CPR) has been shown to provide a benefit and increase likelihood of return of spontaneous circulation (ROSC). Recent research shows that in witnessed out of hospital cardiac arrests, the likelihood of receiving bystander CPR was found to be less among Black or Hispanic people when compared to White persons. One neglected area for layperson CPR training are these correctional facilities. This population is known to have higher rates of diabetes, high blood pressure and coronary artery disease, all of which contribute to an increased risk of acute coronary syndrome.A search was performed of the NEMSIS database. When comparing witnessed cardiac arrest, incidents without bystander interventions occurred more frequently than expected if the arrest was witnessed by a family member or other lay person. These interventions included bystander CPR or AED placement with or without defibrillation.The data presented shows that there is an unmet need of additional lay person CPR training in correctional facilities which could be implemented for little cost.

5.
AEM Educ Train ; 5(Suppl 1): S73-S75, 2021 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-34616976

RESUMO

BACKGROUND: Although the number of women entering medical school and emergency medicine (EM) residencies has increased, female physicians are still proportionally underrepresented in EM. The goal of this study was to determine if there was a relationship between resident gender and program leadership gender. METHODS: A survey of residency leadership and residents was completed, and multivariate factor analysis was performed. RESULTS: It was found that 31% of program directors (PDs) were women, along with 42% of associate PDs, 48% of assistant PDs, 36% of residents, and 48% of chief residents. The strongest correlation between female residents and program leadership was between female residents and female assistant PDs (0.25). Female residents were also strongly correlated with female chief residents (0.40). CONCLUSIONS: Although we cannot determine the direction of causation, moving forward, programs looking to increase their female resident cohort should consider focusing efforts around increasing representation at the program leadership and chief resident level.

6.
Cureus ; 13(3): e14228, 2021 Mar 31.
Artigo em Inglês | MEDLINE | ID: mdl-33948417

RESUMO

INTRODUCTION:  Ketamine is commonly used in emergency department procedural sedation. Mild to moderate transient increases in blood pressure, heart rate, and cardiac output are common due to ketamine causing an increase in sympathetic activity. There is a concern that these physiological changes could result in an increased myocardial oxygen demand that may exacerbate underlying cardiac disease. METHODS:  Convenience sample of patients older than 50 years receiving ketamine for procedural sedation in the emergency department was used (n = 31). Patients were selected to receive ketamine based on provider discretion. Primary outcome was incidence of new myocardial ischemia apparent on an electrocardiogram (ECG). ECGs were obtained prior to sedation and during the sedation approximately one minute after administration of ketamine. ECGs were reviewed by a board-certified emergency medicine physician and a board-certified cardiologist. RESULTS:  New onset ischemia was found in 9.7% (3/31) of ECGs. Of these, one was in a patient who had previously received ketamine without evidence of ischemia on the repeat ECG. There were no statistically significant differences between the groups. Evidence of ischemia on ECG did not impact patient disposition. CONCLUSIONS:  Ketamine is a useful medication in procedural sedation; however, careful attention should be made in patient selection when ketamine is the desired agent. Consideration might be made in using the lowest possible dose of ketamine to obtain adequate sedation in order to hopefully lessen the occurrence of ECG changes suggestive of myocardial ischemia. Based on this small sample, single-site study, no evidence of statistically or clinically significant ischemia was seen with the use of ketamine for procedural sedation. Ketamine remains a safe medication option in adults undergoing procedural sedation.

7.
Artigo em Inglês | MEDLINE | ID: mdl-33278004

RESUMO

Endometriosis, the presence and growth of uterine endometrial glandular epithelial and stroma cells outside the uterine cavity, causes pain and infertility in women and girls of reproductive age. As randomized, double-blinded, controlled studies of endometriosis in women are impractical and at times ethically prohibitive, animal models for endometriosis arose as an important adjunct to gain mechanistic insights into the etiology and pathophysiological mechanisms of this perplexing disorder. A more thorough understanding of endometriosis in women may help develop novel noninvasive diagnostics, classification systems, therapeutic regimes, and even preventative methods for the management of endometriosis. This chapter is intended to introduce a brief historical background, biological and epidemiological aspects, the major symptoms, the effects of endocrine-disrupting chemicals, and an example of an epigenetic factor of endometriosis in women.


Assuntos
Endometriose/etiologia , Endométrio/patologia , Infertilidade Feminina/etiologia , Animais , Modelos Animais de Doenças , Endometriose/patologia , Feminino , Humanos , Infertilidade Feminina/patologia
8.
Adv Anat Embryol Cell Biol ; 232: 9-24, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33278005

RESUMO

The existence of endometriosis has been known since at least the nineteenth century, yet the lack of understanding of causes of infertility and therefore inadequate treatment approaches in endometriosis creates a significant challenge in reproductive medicine. Women worldwide suffer not only pain and infertility but also economical, societal, and physiological burdens. Studies of reproductive events in women are difficult to conduct due to a host of confounding personal and environmental factors and ethically limited due to the very nature of working with reproductive tissues and cells, especially embryos. Animal models are a viable adjunct to study mechanisms causing human reproductive anomalies and infertility in endometriosis. This chapter discusses reproductive anomalies causing infertility in endometriosis and well-established animal models which help decipher the problems and lead to heretofore unknown nonsurgical, nonhormonal methods to manage endometriosis in women. In addition, studies of effects of developmental exposure to endometriosis are revealing for the first time, in both female and male offspring, transgenerational subfertility in a rat model providing insights into the familial nature of endometriosis and possible epigenetic involvement.


Assuntos
Endometriose/complicações , Fertilidade/fisiologia , Infertilidade Feminina/etiologia , Animais , Endometriose/fisiopatologia , Feminino , Humanos , Infertilidade Feminina/fisiopatologia , Ratos
9.
J Am Coll Emerg Physicians Open ; 1(6): 1486-1492, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-33392554

RESUMO

OBJECTIVE: Given the increase in narcotic addiction and diversion, understanding how patients use their opioid prescriptions and store or dispose of any remainders is important. We set out to determine the frequency in which patients had leftover opioid quantities from prescriptions received in the emergency department (ED). In addition, we sought to describe patients' reasons for taking or not taking all of their prescribed medications and their strategies to manage and/or dispose of any excess or leftovers. METHODS: This cross-sectional study took place at an academic center in an urban environment in mid-Missouri with an annual emergency department volume of 55,000 patients. Potential participants were identified using a patient discharge prescription log and consisted of adult patients who received opioid prescriptions. A single researcher recruited participants via phone and invited them to participate in the study by completing a short phone survey. RESULTS: The discharge log included 301 patient encounters; of those, 170 potential participants were successfully contacted by phone and 89 agreed to participate in the survey. A majority of the participants indicated that they did not take the full prescription amount. Only 4.1% of participants disposed of their leftover opioids according to U.S. Food and Drug Administration recommendations. Those who did not dispose of their leftover opioids most frequently stored their remaining medication in a medicine cabinet or box, and a majority (77%) indicated that this storage location was unlocked. CONCLUSIONS: A majority of patients discharged from the emergency department have leftover opioids, and almost all of these leftover medications were not disposed of or stored in compliance with US Food and Drug Administration recommendations. Future research to determine what interventions could increase proper storage and disposal of leftover opioids is recommended.

10.
Am J Emerg Med ; 38(7): 1305-1309, 2020 07.
Artigo em Inglês | MEDLINE | ID: mdl-31831349

RESUMO

OBJECTIVE: Prehospital limb amputation is a rare but potentially life-saving intervention. When patients cannot be extricated due to limb entrapment or have hemodynamic compromise that precludes a prolonged extrication, they may benefit from an emergent prehospital amputation. The objective was to experimentally compare three prehospital amputation techniques on porcine legs. METHODS: The three techniques studied were a scalpel with a Gigli saw, a hacksaw, and a reciprocating saw. For the first technique, a scalpel was used to make a circumferential incision in the soft tissue and a Gigli wire saw to cut through the bone. The second and third techniques only used a saw and did not require soft tissue incision with a scalpel. Three providers including an emergency medicine physician, a paramedic, and a medical student performed three amputations of each technique, resulting in twenty-seven total amputations. The primary outcome was amputation time. Secondary outcomes were rate of instrument malfunction and cleanliness of cut. RESULTS: The primary outcome of amputation time was different between techniques. The Gigli saw technique took 32.86 ± 16.53 s (mean ± SD), hacksaw technique 6.28 ± 0.76 s, and reciprocating saw technique 2.84 ± 0.40 s. There were no differences in amputation time between participants for a given amputation technique. The Gigli saw technique had an instrument malfunction on 3/9 trials which was distinct from the other techniques. Differences in cleanliness of cut were nonsignificant. CONCLUSIONS: Prehospital limb amputation with a hacksaw or reciprocating saw may result in faster completion of the time-sensitive procedure with fewer instrument malfunctions.


Assuntos
Amputação Cirúrgica/métodos , Serviços Médicos de Emergência/métodos , Membro Posterior/cirurgia , Duração da Cirurgia , Instrumentos Cirúrgicos , Amputação Cirúrgica/instrumentação , Animais , Auxiliares de Emergência , Medicina de Emergência , Médicos , Estudantes de Medicina , Suínos
11.
West J Emerg Med ; 20(2): 357-362, 2019 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-30881557

RESUMO

INTRODUCTION: The use of competency-based milestones for emergency medicine (EM) was mandated by the Accreditation Council for Graduate Medical Education in 2013. However, clinical competency committees (CCC) may lack diverse, objective data to assess these new competencies. To remedy the lack of objective data when assessing the pharmacotherapy sub-competency (PC5) we introduced a unique approach that actively involves departmental clinical pharmacists in determining the milestone level achieved by the resident. METHODS: Our pharmacists assess the pharmacotherapy knowledge of the residents through multiple methods: direct observation of orders, communication with the residents while performing patient care within the emergency department (ED), and real-time chart review. This observation occurs informally on a daily basis in the ED and is incorporated into the routine work of the pharmacist. The pharmacists use the PC5 sub-competency as their standard evaluation tool in this setting to keep all assessments consistent. RESULTS: Since our residency program introduced pharmacist assessment of resident pharmacotherapy knowledge, the CCC has conducted seven biannual meetings. Of the 120 separate PC5 sub-competency assessments made during those meetings there was 100% agreement between the pharmacist's assessment and the CCC's final assessment of the trainee. A survey of the CCC members concluded that the pharmacists' assessments were useful and aided in accurate resident evaluation. CONCLUSION: The use of ED pharmacists in assessing the pharmacotherapy sub-competency provides important information used in resident assessment of the PC5 milestone.


Assuntos
Competência Clínica/normas , Avaliação Educacional/métodos , Medicina de Emergência/educação , Internato e Residência , Acreditação/normas , Avaliação Educacional/estatística & dados numéricos , Medicina de Emergência/normas , Humanos , Farmacêuticos , Avaliação de Programas e Projetos de Saúde
14.
Endocrinology ; 159(12): 4033-4042, 2018 12 01.
Artigo em Inglês | MEDLINE | ID: mdl-30395176

RESUMO

By mediating estrogen synthesis and follicular growth in response to FSH, the ovarian FSH receptor (FSHR) is essential for female fertility. Indeed, ovarian stimulation via administration of FSH to women with infertility is part of the primary therapeutic intervention used in assisted reproductive technology. In physiological and therapeutic contexts, current dogma dictates that once ovulation has occurred, FSH/FSHR signaling is no longer required for successful pregnancy outcomes. However, a continued role for FSH during pregnancy is suggested by recent studies demonstrating extraovarian FSHR in the female reproductive tract. Furthermore, functional roles for FSHR in placenta and in uterine myometrium have now been demonstrated. In placenta, vascular endothelial FSHR of fetal vessels within the chorionic villi (human) or labyrinth (mouse) mediate angiogenesis, and it has further been shown that deletion of placental Fshr in mice has deleterious effects on pregnancy. In uterine myometrium, changes in the densities of FSHR in muscle fiber and stroma in the nonpregnant state, early pregnancy, and term pregnancy differentially regulate contractile activity, suggesting that signaling through myometrial FSHR may contribute to the quieting of contractile activity required for successful implantation and that the temporal upregulation of the FSHR at term pregnancy may be required for the appropriate timing of parturition. In addition, extraovarian expression of mRNAs encoding the glycoprotein hormone α subunit and the FSH ß subunit has been demonstrated, suggesting that these novel aspects of extraovarian FSH/FSHR signaling during pregnancy may be mediated by locally synthesized FSH.


Assuntos
Hormônio Foliculoestimulante/fisiologia , Ovário/metabolismo , Gravidez/fisiologia , Receptores do FSH/metabolismo , Animais , Feminino , Humanos , Infertilidade Feminina/etiologia , Infertilidade Feminina/metabolismo , Camundongos , Transdução de Sinais/fisiologia
15.
Mol Cell Endocrinol ; 476: 79-83, 2018 11 15.
Artigo em Inglês | MEDLINE | ID: mdl-29715497

RESUMO

It has been shown in both human and mouse placentas that follicle stimulating hormone receptor (FSHR) is expressed in fetal vascular endothelium. There are conflicting reports, however, on the role of FSH to stimulate angiogenesis in vitro in cultured endothelial cells from umbilical veins. Therefore, in this study we undertook an in vivo approach utilizing Fshr null mice to definitively address this question. In the context where all pregnant dams have identical Fshr genotypes, we generated fetuses and associated fetal portions of placenta that were Fshr wt or Fshr null and analyzed angiogenesis within the placental labyrinths. Quantitative morphometric analyses of placentas obtained at mid-gestation revealed that the percentage of the placenta composed of labyrinth is significantly decreased in Fshr null placentas relative to wt placentas. Furthermore, data presented demonstrate that within the Fshr null labyrinths, fetal vessel angiogenesis was significantly reduced relative to wt labyrinths. The results obtained with this combination of in vivo and genetic approaches conclusively demonstrate that signaling through endothelial FSHR does indeed stimulate angiogenesis and that placental Fshr is essential for normal angiogenesis of the fetal placental vasculature.


Assuntos
Feto/irrigação sanguínea , Deleção de Genes , Neovascularização Fisiológica , Placenta/irrigação sanguínea , Receptores do FSH/deficiência , Animais , Feminino , Camundongos Knockout , Gravidez , Receptores do FSH/metabolismo
16.
Biol Reprod ; 95(2): 36, 2016 08.
Artigo em Inglês | MEDLINE | ID: mdl-27335068

RESUMO

Previous studies from our laboratory revealed that the follicle-stimulating hormone receptor (FSHR) is expressed at low levels in nonpregnant human myometrium and that it is up-regulated in pregnant term nonlaboring myometrium; however, the physiological relevance of these findings was unknown. Herein, we examined signaling pathways stimulated by FSH in immortalized uterine myocytes expressing recombinant FSHR at different densities and showed that cAMP accumulation is stimulated in all cases but that inositol phosphate accumulation is stimulated only at high FSHR densities. Because an increase in cAMP quiets myometrial contractile activity but an increase in 1,4,5-triphosphoinositol stimulates contractile activity, we hypothesized that FSHR density dictates whether FSH quiets or stimulates myometrial contractility. Indeed, in human and mouse nonpregnant myometrium, which express low levels of FSHR, application of FSH resulted in a quieting of contractile activity. In contrast, in pregnant term nonlaboring myometrium, which expresses higher levels of FSHR, application of FSH resulted in increased contractile activity. Examination of pregnant mouse myometrium from different stages of gestation revealed that FSHR levels remained low throughout most of pregnancy. Accordingly, through mid-gestation, the application of FSH resulted in a quieting of contractile activity. At Pregnancy Day (PD) 16.5, FSHR was up-regulated, although not yet sufficiently to mediate stimulation of contractility in response to FSH. This outcome was not observed until PD 19.5, when FSHR was further up-regulated. Our studies describe a novel FSHR signaling pathway that regulates myometrial contractility, and suggest that myometrial FSHR levels dictate the quieting vs. stimulation of uterine contractility in response to FSH.


Assuntos
Hormônio Foliculoestimulante/farmacologia , Miométrio/efeitos dos fármacos , Receptores do FSH/metabolismo , Contração Uterina/efeitos dos fármacos , Adolescente , Adulto , Animais , Linhagem Celular , Feminino , Humanos , Camundongos , Pessoa de Meia-Idade , Células Musculares/efeitos dos fármacos , Células Musculares/metabolismo , Miografia , Miométrio/fisiologia , Gravidez , Transdução de Sinais/fisiologia , Contração Uterina/fisiologia , Adulto Jovem
17.
Biol Reprod ; 91(3): 74, 2014 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-25100706

RESUMO

Expression and function of the follicle-stimulating hormone receptor (FSHR) in females were long thought to be limited to the ovary. Here, however, we identify extragonadal FSHR in both the human female reproductive tract and the placenta, and test its physiological relevance in mice. We show that in nonpregnant women FSHR is present on: endothelial cells of blood vessels in the endometrium, myometrium, and cervix; endometrial glands of the proliferative and secretory endometrium; cervical glands and the cervical stroma; and (at low levels) stromal cells and muscle fibers of the myometrium. In pregnant women, placental FSHR was detected as early as 8-10 wk of gestation and continued through term. It was expressed on: endothelial cells in fetal portions of the placenta and the umbilical cord; epithelial cells of the amnion; decidualized cells surrounding the maternal arteries in the maternal decidua; and the stromal cells and muscle fibers of the myometrium, with particularly strong expression at term. These findings suggest that FSHR expression is upregulated during decidualization and upregulated in myometrium as a function of pregnancy. The presence of FSHR in the placental vasculature suggests a role in placental angiogenesis. Analysis of genetically modified mice in which Fshr is lacking in fetal portions of the placenta revealed adverse effects on fetoplacental development. Our data further demonstrate FSHB and CGA mRNAs in placenta and uterus, consistent with potential local sources of FSH. Collectively, our data suggest heretofore unappreciated roles of extragonadal FSHR in female reproductive physiology.


Assuntos
Endotélio Vascular/metabolismo , Regulação da Expressão Gênica no Desenvolvimento , Placenta/metabolismo , Placentação , Receptores do FSH/metabolismo , Adulto , Animais , Colo do Útero/irrigação sanguínea , Colo do Útero/citologia , Colo do Útero/metabolismo , Endométrio/irrigação sanguínea , Endométrio/citologia , Endométrio/metabolismo , Endotélio Vascular/citologia , Membranas Extraembrionárias/irrigação sanguínea , Membranas Extraembrionárias/citologia , Membranas Extraembrionárias/metabolismo , Feminino , Humanos , Imuno-Histoquímica , Camundongos Knockout , Miométrio/irrigação sanguínea , Miométrio/citologia , Miométrio/metabolismo , Placenta/irrigação sanguínea , Placenta/citologia , Gravidez , RNA Mensageiro/metabolismo , Receptores do FSH/genética , Células Estromais/citologia , Células Estromais/metabolismo , Cordão Umbilical/citologia , Cordão Umbilical/metabolismo , Regulação para Cima
18.
J Clin Endocrinol Metab ; 99(5): E813-20, 2014 May.
Artigo em Inglês | MEDLINE | ID: mdl-24527712

RESUMO

CONTEXT: The FSH receptor (FSHR) is traditionally thought to play a role in female reproductive physiology solely within the context of ovarian FSHR. However, FSHR is also expressed in endothelial cells of the placental vasculature and human umbilical cord vessels, suggesting additional facets of female reproduction regulated by extragonadal FSHR. OBJECTIVE: We sought to determine the functional role of FSHR on human umbilical cord endothelial cells (HUVECs), hypothesizing that activation of the FSHR would stimulate angiogenesis. DESIGN: The ability of FSH to stimulate several angiogenic processes in HUVECs was determined. SETTING: This was a laboratory-based study using commercially prepared HUVECs. RESULTS: Tube formation, wound healing, cell migration, cell proliferation, nitric oxide production, and cell survival were stimulated in response to FSH. Quantitative comparisons between HUVECs incubated with maximally stimulatory concentrations of FSH vs vascular endothelial growth factor (VEGF), a well-characterized angiogenic factor, revealed that FSH is as efficacious as VEGF in promoting angiogenic processes. FSH did not provoke increased secretion of VEGF by HUVECs, suggesting the direct stimulation of angiogenic processes by FSH in endothelial cells. In contrast to gonadal cells, the FSHR on HUVECs did not mediate an FSH-stimulated increase in cAMP. However, increased phosphorylation of AKT in response to FSH was observed, suggesting that FSH stimulation of HUVEC FSHR stimulates the PI3K/AKT signaling pathway. CONCLUSIONS: Our studies reveal a novel role for FSHR in female reproductive physiology. Its ability to promote angiogenesis in placental endothelial cells suggests that the FSHR may have an influential role in pregnancy.


Assuntos
Hormônio Foliculoestimulante/farmacologia , Células Endoteliais da Veia Umbilical Humana/metabolismo , Neovascularização Fisiológica/fisiologia , Receptores do FSH/metabolismo , Transdução de Sinais/fisiologia , Movimento Celular/efeitos dos fármacos , Movimento Celular/fisiologia , Proliferação de Células/efeitos dos fármacos , Sobrevivência Celular/efeitos dos fármacos , Sobrevivência Celular/fisiologia , Células Endoteliais da Veia Umbilical Humana/efeitos dos fármacos , Humanos , Neovascularização Fisiológica/efeitos dos fármacos , Óxido Nítrico/biossíntese , Fosforilação/efeitos dos fármacos , Proteínas Proto-Oncogênicas c-akt/metabolismo , Transdução de Sinais/efeitos dos fármacos , Fator A de Crescimento do Endotélio Vascular/farmacologia , Cicatrização/efeitos dos fármacos , Cicatrização/fisiologia
19.
Reprod Sci ; 20(5): 514-23, 2013 May.
Artigo em Inglês | MEDLINE | ID: mdl-23427178

RESUMO

Endometriosis-associated infertility manifests itself via multiple, poorly understood mechanisms. Our goal was to characterize signaling pathways, between peritoneal endometriotic lesions and the ovary, leading to failed ovulation. Genome-wide microarray analysis comparing ovarian tissue from an in vivo endometriosis model in the rat (Endo) with controls (Sham) identified 22 differentially expressed genes, including transiently expressed early growth response factor 1 (Egr1). The Egr1 regulates gene requisites for ovulation. The Egr1 promoter is responsive to tumor necrosis factor-alpha (TNF-α) signaling. We hypothesized that altered expression of ovarian EGR1 is induced by elevated peritoneal fluid TNF-α which is upregulated by the presence of peritoneal endometriosis. Endo rats, compared to controls, had more peritoneal fluid TNF-α and quantitative, spatial differences in Egr1 mRNA and EGR1 protein localization in follicular compartments. Interactions between elevated peritoneal fluid TNF-α and overexpression of follicular Egr1/EGR1 expression may affect downstream protease pathways impeding ovulation in endometriosis. Preliminary studies identified similar patterns of EGR1 protein localization in human ovaries from women with endometriosis and compared to those without endometriosis.


Assuntos
Líquido Ascítico/metabolismo , Proteína 1 de Resposta de Crescimento Precoce/metabolismo , Endometriose/enzimologia , Ovário/enzimologia , Ovulação , Peptídeo Hidrolases/metabolismo , Fator de Necrose Tumoral alfa/metabolismo , Animais , Líquido Ascítico/imunologia , Sítios de Ligação , Estudos de Casos e Controles , Modelos Animais de Doenças , Proteína 1 de Resposta de Crescimento Precoce/genética , Endometriose/genética , Endometriose/imunologia , Endometriose/fisiopatologia , Feminino , Perfilação da Expressão Gênica/métodos , Humanos , Análise de Sequência com Séries de Oligonucleotídeos , Ovário/imunologia , Ovário/fisiopatologia , Regiões Promotoras Genéticas , RNA Mensageiro/metabolismo , Ratos , Ratos Sprague-Dawley , Reação em Cadeia da Polimerase em Tempo Real , Transdução de Sinais , Regulação para Cima
20.
Cell Tissue Res ; 349(3): 849-62, 2012 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-22298022

RESUMO

Endometriosis is a gynecological disease characterized by the presence of endometrial glandular epithelial and stromal cells growing in the extra-uterine environment. The disease afflicts 10%-15% of menstruating women causing debilitating pain and infertility. Endometriosis appears to affect every part of a woman's reproductive system including ovarian function, oocyte quality, embryo development and implantation, uterine function and the endocrine system choreographing the reproductive process and results in infertility or spontaneous pregnancy loss. Current treatments are laden with menopausal-like side effects and many cause cessation or chemical alteration of the reproductive cycle, neither of which is conducive to achieving a pregnancy. However, despite the prevalence, physical and psychological tolls and health care costs, a cure for endometriosis has not yet been found. We hypothesize that endometriosis causes infertility via multifaceted mechanisms that are intricately interwoven thereby contributing to our lack of understanding of this disease process. Identifying and understanding the cellular and molecular mechanisms responsible for endometriosis-associated infertility might help unravel the confounding multiplicities of infertility and provide insights into novel therapeutic approaches and potentially curative treatments for endometriosis.


Assuntos
Endometriose/patologia , Infertilidade Feminina/patologia , Oócitos/patologia , Ovário/patologia , Animais , Implantação do Embrião , Endometriose/complicações , Feminino , Humanos , Infertilidade Feminina/etiologia , Gravidez
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