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1.
Qual Health Res ; 30(3): 391-408, 2020 02.
Artículo en Inglés | MEDLINE | ID: mdl-31347453

RESUMEN

It is crucial for refugee service providers to understand the family planning knowledge, attitudes, and practices of refugee women following third country resettlement. Using an ethnographic approach rooted in Reproductive Justice, we conducted six focus groups that included 66 resettled Somali and Congolese women in a western United States (US) metropolitan area. We analyzed data using modified grounded theory. Three themes emerged within the family planning domain: (a) concepts of family, (b) fertility management, and (c) unintended pregnancy. We contextualized these themes within existing frameworks for refugee cultural transition under the analytic paradigms of "pronatalism and stable versus evolving family structure" and "active versus passive engagement with family planning." Provision of just and equitable family planning care to resettled refugee women requires understanding cultural relativism, social determinants of health, and how lived experiences influence family planning conceptualization. We suggest a counseling approach and provider practice recommendations based on our study findings.


Asunto(s)
Servicios de Planificación Familiar , Conocimientos, Actitudes y Práctica en Salud , Refugiados/psicología , Adolescente , Adulto , Anciano , Antropología Cultural , Congo/epidemiología , Congo/etnología , Características Culturales , Composición Familiar , Femenino , Grupos Focales , Humanos , Persona de Mediana Edad , Embarazo , Embarazo no Planeado/etnología , Determinantes Sociales de la Salud/etnología , Somalia/etnología , Estados Unidos , Adulto Joven
2.
Clin Obstet Gynecol ; 57(4): 644-58, 2014 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-25314087

RESUMEN

Since the development of combined oral contraceptives over 50 years ago, significant innovations have occurred in the domain of the progestin. Evolving knowledge of progestin mechanism of action and physiology has allowed for development of novel progestins with limited steroid receptor cross-reactivity, decreased side effect profiles, and pharmacokinetics optimized for modern delivery systems. This review summarizes current knowledge of progestin physiology, modern delivery systems, and developments of progestin agonists and antagonists for contraception.


Asunto(s)
Dispositivos Anticonceptivos Femeninos , Anticonceptivos Hormonales Orales/uso terapéutico , Congéneres de la Progesterona/uso terapéutico , Progestinas/uso terapéutico , Anticonceptivos Femeninos/uso terapéutico , Anticonceptivos Orales Combinados/uso terapéutico , Implantes de Medicamentos , Estrógenos/uso terapéutico , Femenino , Humanos , Dispositivos Intrauterinos Medicados , Acetato de Medroxiprogesterona/uso terapéutico , Parche Transdérmico , Tromboembolia Venosa/inducido químicamente
3.
J Clin Invest ; 116(2): 357-68, 2006 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-16444293

RESUMEN

Ischemia/reperfusion (I/R) of several organs results in complement activation, but the kidney is unique in that activation after I/R occurs only via the alternative pathway. We hypothesized that selective activation of this pathway after renal I/R could occur either because of a loss of complement inhibition or from increased local synthesis of complement factors. We examined the relationship between renal complement activation after I/R and the levels and localization of intrinsic membrane complement inhibitors. We found that loss of polarity of complement receptor 1-related protein y (Crry) in the tubular epithelium preceded activation of the alternative pathway along the basolateral aspect of the tubular cells. Heterozygous gene-targeted mice that expressed lower amounts of Crry were more sensitive to ischemic injury. Furthermore, inhibition of Crry expressed by proximal tubular epithelial cells in vitro resulted in alternative pathway-mediated injury to the cells. Thus, altered expression of a complement inhibitor within the tubular epithelium appears to be a critical factor permitting activation of the alternative pathway of complement after I/R. Increased C3 mRNA and decreased factor H mRNA were also detected in the outer medulla after I/R, suggesting that altered synthesis of these factors might further contribute to complement activation in this location.


Asunto(s)
Activación de Complemento/fisiología , Proteínas del Sistema Complemento/metabolismo , Túbulos Renales Proximales/metabolismo , Receptores de Complemento/metabolismo , Daño por Reperfusión/inmunología , Animales , Antígenos de Superficie , Células Epiteliales/metabolismo , Células Epiteliales/ultraestructura , Humanos , Túbulos Renales Proximales/citología , Ratones , Ratones Endogámicos C57BL , Ratones Noqueados , Ratas , Ratas Sprague-Dawley , Receptores de Superficie Celular , Receptores de Complemento/genética , Receptores de Complemento 3b , Daño por Reperfusión/patología
4.
Mol Immunol ; 42(1): 87-97, 2005 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-15488947

RESUMEN

Studies in gene-targeted mice have demonstrated that factor B of the alternative complement pathway plays an important role in several disease models, but an exogenous inhibitor of factor B has not previously been available. We have developed an inhibitory monoclonal antibody directed against a critical epitope on mouse factor B and have tested it in a model of antiphospholipid (aPL) antibody (Ab)-induced fetal loss. Gene-targeted factor B-deficient mice (fB-/-) were injected with a fusion protein comprised of the second and third short consensus repeat (SCR) domains of mouse factor B linked to a mouse IgG1 Fc domain. Hybridomas were made from splenocytes of the immunized mouse. One mAb, designated 1379, produced an IgG1 antibody that inhibited alternative pathway activation in vitro and in vivo by preventing formation of the C3bBb complex. Strikingly, this mAb inhibited alternative pathway activation in serum from mice, rats, humans, monkeys, pigs and horses. Fab fragments made from this mAb also inhibited alternative pathway activation. Epitope mapping demonstrated that this antibody binds to factor B within the third SCR domain. When mAb 1379 was administered to mice that also received human IgG containing antiphospholipid antibodies, it provided significant protection from antiphospholipid antibody-induced complement activation and fetal loss. Thus, this mAb to factor B has broad species reactivity and effectively inhibits alternative pathway activation. The mAb protects mice in an in vivo model of antiphospholipid antibody syndrome, demonstrating the therapeutic potential for the inhibition of factor B in this disease.


Asunto(s)
Anticuerpos Antifosfolípidos/efectos adversos , Activación de Complemento/efectos de los fármacos , Muerte Fetal/prevención & control , Animales , Anticuerpos Monoclonales/farmacología , Anticuerpos Monoclonales/uso terapéutico , Factor B del Complemento/antagonistas & inhibidores , Factor B del Complemento/inmunología , Modelos Animales de Enfermedad , Mapeo Epitopo , Femenino , Muerte Fetal/inmunología , Humanos , Ratones , Ratones Noqueados , Embarazo , Complicaciones Hematológicas del Embarazo/tratamiento farmacológico
5.
Obstet Gynecol ; 127(6): 1067-1069, 2016 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-27159749

RESUMEN

BACKGROUND: Misoprostol, a synthetic prostaglandin E1 analog, is commonly used for treatment and prevention of postpartum hemorrhage. Known side effects include transient hyperthermia, chills, nausea, vomiting, and diarrhea. CASE: After a precipitous vaginal delivery complicated by postpartum hemorrhage (600-mL blood loss), a healthy 21-year-old multiparous patient received 800 micrograms rectal misoprostol. Within 30 minutes, she developed rigors, severe hyperthermia (41.5°C [106.7°F]), tachycardia (170s), and transient encephalopathy. Antibiotics and a cooling protocol were initiated in the intensive care unit. Her abnormal vital signs resolved 7-8 hours later. Extensive workup was negative. CONCLUSION: It is important to consider misoprostol toxicity in postpartum hyperthermia, rigors, and tachycardia. Misoprostol should be used judiciously given a lack of evidence for its effectiveness and its potential for serious side effects.


Asunto(s)
Fiebre/diagnóstico , Misoprostol/uso terapéutico , Oxitócicos/uso terapéutico , Hemorragia Posparto/prevención & control , Administración Rectal , Diagnóstico Diferencial , Femenino , Fiebre/etiología , Humanos , Misoprostol/administración & dosificación , Misoprostol/efectos adversos , Oxitócicos/administración & dosificación , Oxitócicos/efectos adversos , Embarazo , Adulto Joven
6.
J Womens Health (Larchmt) ; 25(10): 1038-1043, 2016 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-27032057

RESUMEN

OBJECTIVES: To prospectively evaluate (1) pregnancy desirability, (2) stated intentions should pregnancy occur among emergency contraception (EC) users, and (3) explore differences between women selecting the copper T380 intrauterine device (Cu IUD) or oral levonorgestrel (LNG) regarding hypothetical pregnancy plans and actual pregnancy actions during subsequent unintended pregnancies. STUDY DESIGN: In this prospective observational trial, women received the Cu IUD or oral LNG for EC without cost barriers. At baseline, participants completed a visual analogue scale measuring pregnancy desirability (anchors: 0, "trying hard not to get pregnant"; 10, "trying hard to get pregnant") and self-reported plans (abortion, adoption, parenting, and unsure) if the pregnancy test were to come back positive. Pregnancies were tracked for 12 months, and actions regarding unintended pregnancies were compared between EC method groups. RESULTS: Of 548 enrolled women, 218 chose the Cu IUD and 330 the oral LNG for EC. Pregnancy desirability at baseline was low, with no difference between EC groups (IUD group: 0.51, SD ± 1.60; LNG group: 0.68, SD ± 1.74). Fifty-four (10%) women experienced unintended pregnancies. Pregnancy plans from baseline changed for 27 (50%) women when they became pregnant. EC groups did not differ in hypothetical pregnancy intention (p = 0.15) or in agreement of hypothetical pregnancy intention with actual pregnancy action (p = 0.80). CONCLUSIONS: Women presenting for EC state high desire to prevent pregnancy regardless of method selected. When considering a hypothetical pregnancy, half of women had a plan for how they would respond to that situation, but when confronting an actual unintended pregnancy, half altered their plan. CLINICAL TRIAL REGISTRATION NUMBER: Clinicaltrials.gov identifier NCT00966771.


Asunto(s)
Anticoncepción Postcoital/métodos , Anticonceptivos Sintéticos Orales/administración & dosificación , Toma de Decisiones , Dispositivos Intrauterinos de Cobre , Levonorgestrel/administración & dosificación , Evaluación de Resultado en la Atención de Salud , Embarazo no Planeado , Adolescente , Adulto , Femenino , Humanos , Intención , Embarazo , Índice de Embarazo , Estudios Prospectivos , Encuestas y Cuestionarios , Utah , Escala Visual Analógica , Adulto Joven
7.
Endocrinology ; 157(11): 4378-4387, 2016 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-27571132

RESUMEN

Although the requirement of pituitary-derived LH for ovulation is well documented, the intrafollicular paracrine and autocrine processes elicited by LH necessary for follicle rupture are not fully understood. Evaluating a published rhesus macaque periovulatory transcriptome database revealed that mRNA encoding leukemia inhibitory factor (LIF) and its downstream signaling effectors are up-regulated in the follicle after animals receive an ovulatory stimulus (human chorionic gonadotropin [hCG]). Follicular LIF mRNA and protein levels are below the limit of detection before the administration of hCG but increase significantly 12 hours thereafter. Downstream LIF receptor (LIFR) signaling components including IL-6 signal transducer, the receptor associated Janus kinase 1, and the transcription factor signal transducer and activator of transcription 3 also exhibit increased expression in the rhesus macaque follicle 12 hours after administration of an ovulatory hCG bolus. A laparoscopic ovarian evaluation 72 hours after the injection of a LIF antagonist (soluble LIFR) into the rhesus macaque preovulatory follicle and hCG administration revealed blocking LIF action prevented ovulation (typically occurs 36-44 h after hCG). Moreover, ovaries removed 52 hours after both hCG and intrafollicular soluble LIFR administration confirmed ovulation was blocked as evidenced by the presence of an intact follicle and a trapped cumulus-oocyte complex. These findings give new insight into the role of LIF in the primate ovary and could lead to the development of new approaches for the control of fertility.


Asunto(s)
Factor Inhibidor de Leucemia/metabolismo , Ovulación/fisiología , Animales , Gonadotropina Coriónica/farmacología , Células del Cúmulo/citología , Células del Cúmulo/efectos de los fármacos , Femenino , Inmunoensayo , Inmunohistoquímica , Factor Inhibidor de Leucemia/antagonistas & inhibidores , Factor Inhibidor de Leucemia/genética , Macaca mulatta , Oocitos/citología , Oocitos/efectos de los fármacos , Folículo Ovárico/efectos de los fármacos , Folículo Ovárico/metabolismo , Ovario/metabolismo , Ovulación/efectos de los fármacos , Ovulación/genética , Fosforilación/efectos de los fármacos , Reacción en Cadena en Tiempo Real de la Polimerasa , Factor de Transcripción STAT3/metabolismo
8.
Contraception ; 93(6): 526-32, 2016 06.
Artículo en Inglés | MEDLINE | ID: mdl-26944863

RESUMEN

OBJECTIVES: We assessed intrauterine device (IUD) preference among women presenting for emergency contraception (EC) and the probability of pregnancy among concurrent oral levonorgestrel (LNG) plus LNG 52 mg IUD EC users. METHODS: We offered women presenting for EC at a single family planning clinic the CuT380A IUD (copper IUD) or oral LNG 1.5 mg plus the LNG 52 mg IUD. Two weeks after IUD insertion, participants reported the results of a self-administered home urine pregnancy test. The primary outcome, EC failure, was defined as pregnancies resulting from intercourse occurring within five days prior to IUD insertion. RESULTS: One hundred eighty-eight women enrolled and provided information regarding their current menstrual cycle and recent unprotected intercourse. Sixty-seven (36%) chose the copper IUD and 121 (64%) chose oral LNG plus the LNG IUD. The probability of pregnancy two weeks after oral LNG plus LNG IUD EC use was 0.9% (95% CI 0.0-5.1%). The only positive pregnancy test after treatment occurred in a woman who received oral LNG plus the LNG IUD and who had reported multiple episodes of unprotected intercourse including an episode more than 5 days prior to treatment. CONCLUSIONS: Study participants seeking EC who desired an IUD preferentially chose oral LNG 1.5 mg with the LNG 52 mg IUD over the copper IUD. Neither group had EC treatment failures. Including the option of oral LNG 1.5 mg with concomitant insertion of the LNG 52 mg IUD in EC counseling may increase the number of EC users who opt to initiate highly effective reversible contraception. IMPLICATIONS: Consideration should be given to LNG IUD insertion with concomitant use of oral LNG 1.5 mg for EC. Use of this combination may increase the number of women initiating highly effective contraception at the time of their EC visit.


Asunto(s)
Anticoncepción Postcoital/métodos , Anticonceptivos Femeninos/administración & dosificación , Dispositivos Intrauterinos de Cobre/estadística & datos numéricos , Dispositivos Intrauterinos Medicados/estadística & datos numéricos , Levonorgestrel/administración & dosificación , Prioridad del Paciente/estadística & datos numéricos , Adolescente , Adulto , Femenino , Humanos , Ciclo Menstrual/efectos de los fármacos , Embarazo , Estudios Prospectivos , Utah , Adulto Joven
9.
Contraception ; 90(3): 288-90, 2014 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-24835830

RESUMEN

OBJECTIVES: To report length of intrauterine device (IUD) and strings as well as technique for extraction when IUD removal occurs without visible strings. STUDY DESIGN: A prospective case series of 29 women who had IUDs removed in-office when strings were not visible at the external cervical os. RESULTS: One third (n=11) were found to have a total length of IUD and strings <7.5 cm. All IUD removals were successfully performed as outpatient procedures. CONCLUSION: Removal of IUDs without visible strings can be successfully done as an in-office procedure. IMPLICATIONS: In-office removal of IUDs without visible strings is effective, safe and economically sound.


Asunto(s)
Anticonceptivos Femeninos , Remoción de Dispositivos/instrumentación , Migración de Dispositivo Intrauterino/efectos adversos , Dispositivos Intrauterinos Medicados , Levonorgestrel , Complicaciones Posoperatorias/prevención & control , Adulto , Cuello del Útero , Remoción de Dispositivos/efectos adversos , Dilatación , Estudios de Factibilidad , Femenino , Hospitales Universitarios , Humanos , Servicio Ambulatorio en Hospital , Estudios Prospectivos , Utah , Adulto Joven
10.
Obstet Gynecol ; 128(4): 909, 2016 10.
Artículo en Inglés | MEDLINE | ID: mdl-27661627
11.
J Immunol ; 178(3): 1819-28, 2007 Feb 01.
Artículo en Inglés | MEDLINE | ID: mdl-17237432

RESUMEN

The complement system is one of the major ways by which the body detects injury to self cells, and the alternative pathway of complement is rapidly activated within the tubulointerstitium after renal ischemia/reperfusion (I/R). In the current study, we investigate the hypothesis that recognition of tubular injury by the complement system is a major mechanism by which the systemic inflammatory response is initiated. Gene array analysis of mouse kidney following I/R initially identified MIP-2 (CXCL2) and keratinocyte-derived chemokine (KC or CXCL1) as factors that are produced in a complement-dependent fashion. Using in situ hybridization, we next demonstrated that these factors are expressed in tubular epithelial cells of postischemic kidneys. Mouse proximal tubular epithelial cells (PTECs) in culture were then exposed to an intact alternative pathway and were found to rapidly produce both chemokines. Selective antagonism of the C3a receptor significantly attenuated production of MIP-2 and KC by PTECs, whereas C5a receptor antagonism and prevention of membrane attack complex (MAC) formation did not have a significant effect. Treatment of PTECs with an NF-kappaB inhibitor also prevented full expression of these factors in response to an intact alternative pathway. In summary, alternative pathway activation after renal I/R induces production of MIP-2 and KC by PTECs. This innate immune system thereby recognizes hypoxic injury and triggers a systemic inflammatory response through the generation of C3a and subsequent activation of the NF-kappaB system.


Asunto(s)
Quimiocinas CXC/biosíntesis , Quimiocinas/genética , Complemento C3a/genética , Complemento C3a/fisiología , Células Epiteliales/inmunología , Túbulos Renales/patología , FN-kappa B/metabolismo , Daño por Reperfusión/inmunología , Animales , Quimiocina CXCL1 , Quimiocina CXCL2 , Quimiocinas CXC/genética , Activación de Complemento , Células Epiteliales/patología , Perfilación de la Expresión Génica , Inflamación , Enfermedades Renales , Ratones , Ratones Noqueados , Daño por Reperfusión/patología
12.
J Am Soc Nephrol ; 17(3): 707-15, 2006 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-16467447

RESUMEN

Complement activation in the kidney after ischemia/reperfusion (I/R) seems to occur primarily via the alternative complement pathway. The ability of an inhibitory mAb to mouse factor B, a necessary component of the alternative pathway, to protect mice from ischemic acute renal failure was tested. Treatment with the mAb prevented the deposition of C3b on the tubular epithelium and the generation of systemic C3a after renal I/R. Treated mice had significantly lower increases in serum urea nitrogen and developed significantly less morphologic injury of the kidney after I/R. For gaining insight into potential mechanisms of protection, the activity of caspases within the kidney also was measured, and it was found that caspases-2, -3, and -9 increased in a complement-dependent manner after renal I/R. Apoptotic cells were detected by terminal deoxynucleotidyl transferase catalyzed labeling of DNA fragments, and mice in which the alternative pathway was inhibited demonstrated significantly less apoptosis than control mice. Thus, use of an inhibitory mAb to mouse factor B effectively prevented activation of complement in the kidney after I/R and protected the mice from necrotic and apoptotic injury of the tubules.


Asunto(s)
Apoptosis/efectos de los fármacos , Caspasas/metabolismo , Factor B del Complemento/efectos de los fármacos , Complejo de Ataque a Membrana del Sistema Complemento/farmacología , Enfermedades Renales/prevención & control , Daño por Reperfusión/prevención & control , Análisis de Varianza , Animales , Anticuerpos Monoclonales/farmacología , Apoptosis/fisiología , Western Blotting , Activación de Complemento , Factor B del Complemento/metabolismo , Modelos Animales de Enfermedad , Técnica del Anticuerpo Fluorescente , Enfermedades Renales/patología , Masculino , Ratones , Ratones Endogámicos C57BL , Probabilidad , Distribución Aleatoria , Circulación Renal , Daño por Reperfusión/patología
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