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1.
BMC Health Serv Res ; 24(1): 362, 2024 Mar 21.
Artículo en Inglés | MEDLINE | ID: mdl-38515163

RESUMEN

BACKGROUND: Globally, healthcare workers (HCWs) in maternity units are at high risk of developing burnout. Burnout can lead to multiple harmful impacts on HCWs, their patients, and the broader healthcare system. Little is known about the burden of burnout among sub-Saharan African HCWs. Although evidence suggests that maternity unit doctors in a hospital complex in Namibia are at risk of developing burnout, no studies have been conducted on doctors in this department yet. METHODS: Through participant observation and a mixed-methods needs assessment, this study aimed to explore the drivers, experiences, and impact of burnout symptoms among doctors in this department, and current support mechanisms in place. Survey data was collected from 18 participants and seven in-depth interviews were conducted. Burnout risk was assessed using the Burnout Assessment Tool. RESULTS: Seven out of 18 participants were at very high risk for burnout and three were at risk, showing a high prevalence of burnout risk. Burnout risk remained similar between levels of staff, while gender qualitatively impacted burnout-related experiences. Drivers of burnout were identified at personal, occupational, and systemic levels. CONCLUSIONS: Over half of participants were at risk or at very high risk of burnout. Results highlighted a need for support and identified areas for intervention and further research. Such areas include blame culture, lack of trust between colleagues, and systemic drivers of burnout. This study contributes to the understanding of burnout among HCWs in sub-Saharan Africa.


Asunto(s)
Agotamiento Profesional , Médicos , Humanos , Femenino , Embarazo , Namibia/epidemiología , Personal de Salud , Agotamiento Profesional/epidemiología , Encuestas y Cuestionarios , Pandemias
2.
BJOG ; 129(1): 91-100, 2022 01.
Artículo en Inglés | MEDLINE | ID: mdl-34494694

RESUMEN

OBJECTIVE: To describe characteristics, risk factors and maternal, obstetric and neonatal outcomes of pregnant women infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). DESIGN: Multi-centre prospective population-based cohort study. SETTING: Nationwide study in the Netherlands. POPULATION: Pregnant women with confirmed SARS-CoV-2 infection admitted to hospital or in home-isolation: 1 March 2020 to 31 August 2020. METHODS: Pregnant women with positive polymerase chain reaction or antibody tests were registered using the Netherlands Obstetrics Surveillance System (NethOSS). (Selective) testing occurred according to national guidelines. Data from the national birth registry (pregnant pre-coronavirus disease 2019 [COVID-19] cohort) and an age-matched cohort of COVID-19-positive women (National Institute for Public Health and the Environment; fertile age COVID-19 cohort) were used as reference. MAIN OUTCOME MEASURES: Incidence of SARS-CoV-2 infection in pregnant women. Maternal, obstetric and neonatal outcomes including hospital and intensive care admission. RESULTS: Of 376 registered pregnant women with confirmed SARS-CoV-2 infection, 20% (74/376) were admitted to hospital, of whom 84% (62/74) were due to SARS-CoV-2; 10% (6/62) were admitted to intensive care and 15% (9/62) to obstetric high-care units. Risk factors for admission were non-European country of origin (odds ratio [OR] 1.73, 95% CI 1.01-2.96) and being overweight/obese (OR 1.86, 95% CI 1.51-3.20). No maternal or perinatal deaths occurred. Caesarean section after labour-onset was increased (OR 1.58, 95% CI 1.09-2.28). Hospital and intensive care admission were higher compared with the fertile age COVID-19 cohort (OR 6.75, 95% CI 5.18-8.81 and OR 2.52, 95% CI 1.11-5.77, respectively). CONCLUSIONS: Non-European country of origin and being overweight/obese are risk factors for severe course of SARS-CoV-2 infection in pregnancy, risk of caesarean section and hospital and intensive care unit admission are increased. TWEETABLE ABSTRACT: Pregnant women with SARS-CoV-2 in the Netherlands show increased hospital/ICU admission and caesarean section.


Asunto(s)
COVID-19/epidemiología , Hospitalización , Pandemias , Complicaciones Infecciosas del Embarazo/epidemiología , Atención Prenatal , SARS-CoV-2 , Adulto , COVID-19/etiología , Estudios de Cohortes , Femenino , Humanos , Países Bajos/epidemiología , Embarazo , Complicaciones Infecciosas del Embarazo/etiología , Resultado del Embarazo , Estudios Prospectivos , Factores de Riesgo , Adulto Joven
3.
BJOG ; 126(3): 394-401, 2019 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-28755459

RESUMEN

OBJECTIVE: Develop a core outcome set of international consensus definitions for severe maternal morbidities. DESIGN: Electronic Delphi study. SETTING: International. POPULATION: Eight expert panels. METHODS: All 13 high-income countries represented in the International Network of Obstetric Surveillance Systems (INOSS) nominated five experts per condition of morbidity, who submitted possible definitions. From these suggestions, a steering committee distilled critical components: eclampsia: 23, amniotic fluid embolism: 15, pregnancy-related hysterectomy: 11, severe primary postpartum haemorrhage: 19, uterine rupture: 20, abnormally invasive placentation: 12, spontaneous haemoperitoneum in pregnancy: 16, and cardiac arrest in pregnancy: 10. These components were assessed by the expert panel using a 5-point Likert scale, following which a framework for an encompassing definition was constructed. Possible definitions were evaluated in rounds until a rate of agreement of more than 70% was reached. Expert commentaries were used in each round to improve definitions. MAIN OUTCOME MEASURES: Definitions with a rate of agreement of more than 70%. RESULTS: The invitation to participate in one or more of eight Delphi processes was accepted by 103 experts from 13 high-income countries. Consensus definitions were developed for all of the conditions. CONCLUSION: Consensus definitions for eight morbidity conditions were successfully developed using the Delphi process. These should be used in national registrations and international studies, and should be taken up by the Core Outcomes in Women's and Newborn Health initiative. TWEETABLE ABSTRACT: Consensus definitions for eight morbidity conditions were successfully developed using the Delphi process.


Asunto(s)
Eclampsia , Embolia de Líquido Amniótico , Paro Cardíaco , Hemoperitoneo , Histerectomía , Enfermedades Placentarias , Hemorragia Posparto , Rotura Uterina , Consenso , Técnica Delphi , Países Desarrollados , Femenino , Humanos , Cooperación Internacional , Evaluación de Resultado en la Atención de Salud , Embarazo , Complicaciones del Embarazo , Complicaciones Cardiovasculares del Embarazo , Garantía de la Calidad de Atención de Salud , Índice de Severidad de la Enfermedad
4.
BMC Pregnancy Childbirth ; 18(1): 192, 2018 Jun 01.
Artículo en Inglés | MEDLINE | ID: mdl-29855270

RESUMEN

BACKGROUND: Although interventions in childbirth are important in order to prevent neonatal and maternal morbidity and mortality, non-indicated use may cause avoidable harm. Regional variations in intervention rates, which cannot be explained by maternal characteristics, may indicate over- and underuse. The aim of this study is to explore regional variations in childbirth interventions in the Netherlands and their associations with interventions and adverse outcomes, controlled for maternal characteristics. METHODS: Childbirth intervention rates were compared between twelve Dutch regions, using data from the national perinatal birth register for 2010-2013. All single childbirths from 37 weeks' gestation onwards were included. Primary outcomes were induction and augmentation of labour, pain medication, instrumental birth, caesarean section (prelabour, intrapartum) and paediatric involvement. Secondary outcomes were adverse neonatal and maternal outcomes. Multivariable logistic regression analyses were used to adjust for maternal characteristics. Associations were expressed in Spearman's rank correlation coefficients. RESULTS: Most variation was found for type of pain medication and paediatric involvement. Epidural analgesia rates varied from between 12 and 38% (nulliparous) and from between 5 and 14% (multiparous women). These rates were negatively correlated with rates of other pharmacological pain relief, which varied from between 15 and 43% (nulliparous) and from between 10 and 27% (multiparous). Rates of paediatric involvement varied from between 37 and 60% (nulliparous) and from between 26 and 43% (multiparous). For instrumental vaginal births, rates varied from between 16 and 19% (nulliparous) and from between 3 and 4% (multiparous). For intrapartum caesarean section, the variation was 13-15% and 5-6%, respectively. A positive correlation was found between intervention rates in midwife-led and obstetrician-led care at the onset of labour within the same region. Adverse neonatal and maternal outcomes were not lower in regions with higher intervention rates. Higher augmentation of labour rates correlated with higher rates of severe postpartum haemorrhage. CONCLUSIONS: Most variation was found for type of pain medication and paediatric involvement, and least for instrumental vaginal births and intrapartum caesarean sections. Care providers and policy makers should critically audit remarkable variations, since these may be unwarranted. Limited variation for some interventions may indicate consensus for their use. Further research should focus on variations in evidence-based interventions and indications for the use of interventions in childbirth.


Asunto(s)
Parto Obstétrico/estadística & datos numéricos , Servicios de Salud Materna/estadística & datos numéricos , Resultado del Embarazo/epidemiología , Adulto , Analgesia Obstétrica/estadística & datos numéricos , Cesárea/estadística & datos numéricos , Femenino , Geografía , Humanos , Trabajo de Parto Inducido/estadística & datos numéricos , Modelos Logísticos , Análisis Multivariante , Países Bajos/epidemiología , Pediatría/estadística & datos numéricos , Embarazo , Sistema de Registros , Estadísticas no Paramétricas
6.
Reprod Health ; 14(1): 60, 2017 May 16.
Artículo en Inglés | MEDLINE | ID: mdl-28511685

RESUMEN

BACKGROUND: Disrespect and abuse of women during institutional childbirth services is one of the deterrents to utilization of maternity care services in Ethiopia and other low- and middle-income countries. This paper describes the prevalence of respectful maternity care (RMC) and mistreatment of women in hospitals and health centers, and identifies factors associated with occurrence of RMC and mistreatment of women during institutional labor and childbirth services. METHODS: This study had a cross sectional study design. Trained external observers assessed care provided to 240 women in 28 health centers and hospitals during labor and childbirth using structured observation checklists. The outcome variable, providers' RMC performance, was measured by nine behavioral descriptors. The outcome, any mistreatment, was measured by four items related to mistreatment of women: physical abuse, verbal abuse, absence of privacy during examination and abandonment. We present percentages of the nine RMC indicators, mean score of providers' RMC performance and the adjusted multilevel model regression coefficients to determine the association with a quality improvement program and other facility and provider characteristics. RESULTS: Women on average received 5.9 (66%) of the nine recommended RMC practices. Health centers demonstrated higher RMC performance than hospitals. At least one form of mistreatment of women was committed in 36% of the observations (38% in health centers and 32% in hospitals). Higher likelihood of performing high level of RMC was found among male vs. female providers ([Formula: see text], p = 0.012), midwives vs. other cadres ([Formula: see text], p = 0.002), facilities implementing a quality improvement approach, Standards-based Management and Recognition (SBM-R©) ([Formula: see text], p = 0.003), and among laboring women accompanied by a companion [Formula: see text], p = 0.003). No factor was associated with observed mistreatment of women. CONCLUSION: Quality improvement using SBM-R© and having a companion during labor and delivery were associated with RMC. Policy makers need to consider the role of quality improvement approaches and accommodating companions in promoting RMC. More research is needed to identify the reason for superior RMC performance of male providers over female providers and midwives compared to other professional cadre, as are longitudinal studies of quality improvement on RMC and mistreatment of women during labor and childbirth services in public health facilities.


Asunto(s)
Actitud del Personal de Salud , Parto Obstétrico , Servicios de Salud Materna , Relaciones Profesional-Paciente , Práctica de Salud Pública , Calidad de la Atención de Salud , Adulto , Lista de Verificación , Estudios Transversales , Parto Obstétrico/ética , Parto Obstétrico/normas , Parto Obstétrico/estadística & datos numéricos , Etiopía/epidemiología , Femenino , Personal de Salud/ética , Personal de Salud/psicología , Personal de Salud/estadística & datos numéricos , Accesibilidad a los Servicios de Salud/normas , Accesibilidad a los Servicios de Salud/estadística & datos numéricos , Humanos , Masculino , Servicios de Salud Materna/ética , Servicios de Salud Materna/normas , Servicios de Salud Materna/estadística & datos numéricos , Parto/etnología , Parto/psicología , Abuso Físico/estadística & datos numéricos , Embarazo , Prevalencia , Relaciones Profesional-Paciente/ética , Práctica de Salud Pública/ética , Práctica de Salud Pública/normas , Práctica de Salud Pública/estadística & datos numéricos , Mejoramiento de la Calidad , Calidad de la Atención de Salud/ética , Calidad de la Atención de Salud/normas
8.
J Matern Fetal Neonatal Med ; 37(1): 2311083, 2024 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-38350236

RESUMEN

OBJECTIVE: To estimate the incidence of uterine rupture in the Netherlands and evaluate risk indicators prelabour and during labor of women with adverse maternal and/or perinatal outcome. METHODS: This is a population-based nationwide study using the Netherlands Obstetrics Surveillance System (NethOSS). We performed a two-year registration of pregnant women with uterine rupture. The first year of registration included both women with complete uterine rupture and women with incomplete (peritoneum intact) uterine rupture. The second year of registration included women with uterine rupture with adverse maternal and/or perinatal outcome. We collected maternal and obstetric characteristics, clinical signs, and symptoms during labor and CTG abnormalities. The main outcome measures were incidence of complete uterine rupture and uterine rupture with adverse outcome and adverse outcome defined as major obstetric hemorrhage, hysterectomy, embolization, perinatal asphyxia and/or (neonatal) intensive care unit admission. RESULTS: We registered 41 women with a complete uterine rupture (incidence: 2.5 per 10,000 births) and 35 women with uterine rupture with adverse outcome (incidence: 0.9 per 10,000 births). No adverse outcomes were found among women with incomplete uterine rupture. Risk indicators for adverse outcome included previous cesarean section, higher maternal age, gestational age <37 weeks, augmentation of labor, migration background from Sub-Saharan Africa or Asia. Compared to women with uterine rupture without adverse outcomes, women with adverse outcome more often expressed warning symptoms during labor such as abdominal pain (OR 3.34, 95%CI 1.26-8.90) and CTG abnormalities (OR 9.94, 95%CI 2.17-45.65). These symptoms were present most often 20 to 60 min prior to birth. CONCLUSION: Uterine rupture is a rare condition for which several risk indicators were identified. Maternal symptoms and CTG abnormalities are associated with adverse outcomes and time dependent. Further analysis could provide guidance to expedite delivery.


Asunto(s)
Rotura Uterina , Recién Nacido , Embarazo , Femenino , Humanos , Lactante , Rotura Uterina/epidemiología , Rotura Uterina/etiología , Cesárea/efectos adversos , Mujeres Embarazadas , Estudios Prospectivos , Países Bajos/epidemiología
9.
Prev Med Rep ; 40: 102665, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38435415

RESUMEN

Objectives: Among women with severe PPH (sPPH) in France and the Netherlands, we compared incidence of adverse maternal outcome (major obstetric hemorrhage (≥2.5L blood loss) and/or hysterectomy and/or mortality) by mode of delivery. Second, we compared use and timing of resuscitation and transfusion management, second-line uterotonics and uterine-sparing interventions (intra-uterine tamponade, compression sutures, vascular ligation, arterial embolization) by mode of delivery. Methods:  Secondary analysis of two population-based studies of women with sPPH in France and the Netherlands. Women were selected by a harmonized definition for sPPH: (total blood loss ≥ 1500 ml) AND (blood transfusion of ≥ 4 units packed red blood cells and/or multicomponent blood transfusion). Findings: Incidence of adverse maternal outcome after vaginal birth was 793/1002, 9.1 % in the Netherlands versus 88/214, 41.1 % in France and 259/342, 76.2% versus 160/270, 59.3% after cesarean. Hemostatic agents such as fibrinogen were administered less frequently (p < 0.001) in the Netherlands (vaginal birth: 83/1002, 8.3% versus 105/2014, 49.5% in France; cesarean: 47/342, 13.7% and 152/270, 55.6%). Second-line uterotonics were started significantly later after PPH-onset in the Netherlands than France (vaginal birth: 46 versus 25 min; cesarean: 45 versus 18 min). Uterine-sparing interventions were less frequently (p < 0.001) applied in the Netherlands after vaginal birth (394/1002,39.3 %, 134/214, 62.6%) and cesarean (133/342, 38.9 % and 155/270, 57.4%), all initiated later after onset of refractory PPH in the Netherlands. Interpretation: Incidence of adverse maternal outcome was higher among women with sPPH in the Netherlands than France regardless mode of birth. Possible explanatory mechanisms are earlier and more frequent use of second-line uterotonics and uterine-sparing interventions in France compared to the Netherlands.

10.
Int J Gynaecol Obstet ; 162(3): 1077-1085, 2023 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-37177815

RESUMEN

OBJECTIVE: To learn lessons for maternity care by scrutinizing postpartum hemorrhage management (PPH) in cases of PPH-related maternal deaths in France and the Netherlands. METHODS: In this binational Confidential Enquiry into Maternal Deaths (CEMD), 14 PPH-related maternal deaths were reviewed by six experts from the French and Dutch national maternal death review committees regarding cause and preventability of death, clinical care and healthcare organization. Improvable care factors and lessons learned were identified. CEMD practices and PPH guidelines in France and the Netherlands were compared in the process. RESULTS: For France, new insights were primarily related to organization of healthcare, with lessons learned focusing on medical leadership and implementation of (surgical) checklists. For the Netherlands, insights were mainly related to clinical care, emphasizing hemostatic surgery earlier in the course of PPH and reducing the third stage of labor by prompter manual removal of the placenta. Experts recommended extending PPH guidelines with specific guidance for women refusing blood products and systematic evaluation of risk factors. The quality of CEMD was presumed to benefit from enhanced case finding, also through non-obstetric sources, and electronic reporting of maternal deaths to reduce the administrative burden. CONCLUSION: A binational CEMD revealed opportunities for improvement of care beyond lessons learned at the national level.


Asunto(s)
Muerte Materna , Servicios de Salud Materna , Hemorragia Posparto , Embarazo , Femenino , Humanos , Hemorragia Posparto/terapia , Muerte Materna/prevención & control , Países Bajos/epidemiología , Francia
11.
BJOG ; 119(4): 431-8, 2012 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-22251303

RESUMEN

OBJECTIVE: To evaluate the use of reproductive health care and incidence of paediatric HIV infection during the expansion of antiretroviral therapy and services for the prevention of mother-to-child transmission in rural Malawi, and the influence of integration of these HIV-related services into general health services. DESIGN: Descriptive analysis. SETTING: Thyolo District, with a population of 600,000, an HIV prevalence of 21% and a total fertility rate of 5.7 in 2004. POPULATION: Women attending reproductive health services care in 2005 and 2010. METHODS: Review of facility records and databases for routine monitoring. MAIN OUTCOME MEASURES: Use of antenatal, intrapartum, postpartum, family planning and sexually transmitted infection services; incidence of HIV infection in infants born to mothers who received prevention of mother-to-child transmission care. RESULTS: There was a marked increase in the uptake of perinatal care: pregnant women in 2010 were 50% more likely to attend at least one antenatal visit (RR 1.50, 95% CI 1.48-1.51); were twice as likely to deliver at a healthcare facility (RR 2.05, 95% CI 2.01-2.08); and were more than four times as likely to present for postpartum care (RR 4.40, 95% CI 4.25-4.55). Family planning consultations increased by 40% and the number of women receiving treatment for sexually transmitted infections doubled. Between 2007 and 2010, the number of HIV-exposed infants who underwent testing for HIV went up from 421 to 1599/year, and the proportion testing positive decreased from 13.3 to 5.0%; infants were 62% less likely to test HIV positive (RR 0.38, 95% CI 0.27-0.52). CONCLUSIONS: During the expansion and integration of HIV care, the use of reproductive health services increased and the outcomes of infants born to HIV-infected mothers improved. HIV care may be successfully integrated into broader reproductive health services.


Asunto(s)
Infecciones por VIH/prevención & control , Infecciones por VIH/transmisión , VIH-1 , Transmisión Vertical de Enfermedad Infecciosa/prevención & control , Servicios de Salud Materna , Complicaciones Infecciosas del Embarazo/prevención & control , Población Rural , Adulto , Fármacos Anti-VIH/uso terapéutico , Femenino , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/epidemiología , Seropositividad para VIH/transmisión , Necesidades y Demandas de Servicios de Salud , Humanos , Lactante , Recién Nacido , Transmisión Vertical de Enfermedad Infecciosa/estadística & datos numéricos , Malaui/epidemiología , Servicios de Salud Materna/normas , Servicios de Salud Materna/tendencias , Embarazo , Complicaciones Infecciosas del Embarazo/tratamiento farmacológico , Complicaciones Infecciosas del Embarazo/epidemiología , Prevalencia , Salud Reproductiva , Estudios Retrospectivos , Población Rural/estadística & datos numéricos
12.
S Afr Med J ; 112(9): 769-777, 2022 08 30.
Artículo en Inglés | MEDLINE | ID: mdl-36214035

RESUMEN

BACKGROUND: To improve maternal health, studies of maternal morbidity are increasingly being used to evaluate the quality of maternity care, in addition to studies of mortality. While South Africa (SA) has a well-established confidential enquiry into maternal deaths, there is currently no structure in place to systematically collect and analyse maternal near-misses (MNMs) at national level. OBJECTIVES: To synthesise MNM indicators and causes in SA by performing a systematic literature search, and to investigate perceived needs for data collection related to MNMs and determine whether the MNM tool from the World Health Organization (WHO-MNM) would require adaptations in order to be implemented. METHODS: The study used a mixed-methods approach. A systematic literature search was conducted to find all published data on MNM audits in SA. Semi-structured interviews were conducted virtually with maternal health experts throughout the country who had been involved in studies of MNMs, and main themes arising in the interviews were synthesised. A method for MNM data collection for SA use was discussed with these experts. RESULTS: The literature search yielded 797 articles, 15 of which met the WHO-MNM or Mantel et al. severe acute maternal morbidity criteria. The median (interquartile range) MNM incidence ratio in SA was 8.4/1 000 (5.6 - 8.7) live births, the median maternal mortality ratio was 130/100 000 (71.4 - 226) live births, and the median mortality index was 16.6% (11.7 - 18.8). The main causes of MNMs were hypertensive disorders of pregnancy and obstetric haemorrhage. Eight maternal health experts were interviewed from May 2020 to February 2021. All participants focused on the challenges of implementing a national MNM audit, yet noted the urgent need for one. Recognition of MNMs as an indicator of quality of maternity care was considered to lead to improved management earlier in the chain of events, thereby possibly preventing mortality. Obtaining qualitative information from women with MNMs was perceived as an important opportunity to improve the maternity care system. Participants suggested that the WHO-MNM tool would have to be adapted into a simplified tool with more clearly defined criteria and a number of specific diagnoses relevant to the SA setting. This 'Maternal near-miss: Inclusion criteria and data collection form' is provided as a supplementary file. CONCLUSION: Adding MNMs to the existing confidential maternal death enquiry could potentially contribute to a more robust audit with data that may inform health systems planning. This was perceived by SA experts to be valuable, but would require context-specific adaptations to the WHO-MNM tool. The available body of evidence is sufficient to justify moving to implementation.


Asunto(s)
Muerte Materna , Servicios de Salud Materna , Potencial Evento Adverso , Complicaciones del Embarazo , Femenino , Humanos , Mortalidad Materna , Embarazo , Sudáfrica/epidemiología
13.
BJOG ; 123(5): 675, 2016 04.
Artículo en Inglés | MEDLINE | ID: mdl-26630655
14.
J Reprod Immunol ; 143: 103243, 2021 02.
Artículo en Inglés | MEDLINE | ID: mdl-33157499

RESUMEN

A primigravid woman with Covid-19 related respiratory insufficiency was admitted into a tertiary Intensive Care Unit at 23 3/7 weeks' gestation. Highly sensitive flow cytometry of peripheral leukocytes indicated significantly suppressed naïve T- and B-cell compartments. The suppressed immune cell responses led us keep the initially started administration of corticosteroids for fetal and maternal indication at a low dose. After three weeks her B-cell response peaked, SARS-CoV-2 was cleared and clinical improvement ensued a week later. At 28 weeks' gestation, a son of 1570 g was born by cesarean section. She was extubated two days postpartum and discharged from hospital 5.5 weeks postpartum.


Asunto(s)
Linfocitos B/inmunología , COVID-19/diagnóstico , Complicaciones Infecciosas del Embarazo/diagnóstico , Embarazo/inmunología , Insuficiencia Respiratoria/diagnóstico , SARS-CoV-2/fisiología , Linfocitos T/inmunología , Adulto , COVID-19/inmunología , Cesárea , Cuidados Críticos , Femenino , Citometría de Flujo , Número de Embarazos , Humanos , Terapia de Inmunosupresión
16.
Oncogene ; 4(10): 1255-62, 1989 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-2677919

RESUMEN

To study oncogene expression in heterogeneous cell populations we developed and optimized a non-radioactive in situ hybridization technique using biotinylated single-stranded RNA probes and combined this technique with immunofluorescent staining of cell surface markers. As a model for our studies we used HL60 cells. In these cells we detected c-myc mRNA molecules by in situ hybridization following staining of the pan myeloid cell surface marker CD33, by a monoclonal antibody. Hybrids were detected by streptavidin-FITC and CD33 by a TRITC-conjugated antibody. Controls involved pretreatment with RNAase, hybridization with sense RNA probes and blocking with an excess of unlabeled antisense probes. The integrity of the RNA in the cell was shown by hybridization with the GAPDH antisense probe. Essential for successful double-labeling was the choice of a fixation procedure that was suitable for the in situ hybridization and mild enough not to destroy the cell surface marker staining. This fluorescent in situ hybridization in combination with cell surface marker staining will be useful for studying gene expression in phenotypically well-defined cell populations.


Asunto(s)
Antígenos CD , Antígenos de Superficie/análisis , Oncogenes , ARN Mensajero/análisis , Antígenos de Diferenciación Mielomonocítica , Técnica del Anticuerpo Fluorescente , Expresión Génica , Humanos , Hibridación de Ácido Nucleico , Sondas ARN , Lectina 3 Similar a Ig de Unión al Ácido Siálico
17.
Immunobiology ; 171(1-2): 45-56, 1986 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-2940167

RESUMEN

We have studied the functional and proliferative capacity of the T cells of systemic lupus erythematosus (SLE)-prone MRL and BXSB mice during aging. The study was performed in vivo, in the delayed-type hypersensitivity (DTH) assay, and in vitro, in the mixed lymphocyte reaction (MLR). Both assays showed depressed T cell responses in MRL/l and male BXSB mice at 4 to 5 and 9 to 10 months of age, respectively, when a significant proportion of the animals showed clear-cut disease. At younger ages, the proliferation-dependent DTH was not affected in MRL/l and male BXSB mice. This is in agreement with the reported primary B cell defect of male BXSB mice, but not with the reported early T cell abnormalities in MRL/l mice. A subnormal reactivity of the highly proliferating T helper cells or the existence of a T cell subset with normal DTH reactivity might account for the relatively long-lasting normal DTH reactivity in MRL/l mice.


Asunto(s)
Lupus Eritematoso Sistémico/inmunología , Linfocitos T/inmunología , Animales , Antígenos de Superficie/análisis , Modelos Animales de Enfermedad , Femenino , Técnica del Anticuerpo Fluorescente , Prueba de Cultivo Mixto de Linfocitos , Masculino , Ratones , Ratones Mutantes , Especificidad de la Especie , Bazo/inmunología , Linfocitos T/clasificación
18.
Cancer Genet Cytogenet ; 86(2): 156-61, 1996 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-8603345

RESUMEN

Multiple myeloma (MM) and Waldenstrom's macroglobulinemia-like lymphoma (MW) appear spontaneously in C57BL/KaLwRij mice at a frequency of 0.5% and 0.2%, respectively. They can readily be propagated by intravenous transfer of mainly bone marrow or spleen cells into syngeneic recipients. Previous studies demonstrated that these mouse malignant monoclonal gammopathies (MMG) show clinical and biologic features that closely resemble those of the corresponding human diseases and thus could be used as experimental models. We report on cytogenetic analysis of two mouse MW and five MM in vivo cell lines of the 5TMM series propagated in syngeneic mice. These studies demonstrated clonal abnormalities in all cell lines, hyperdiploid karyotype in both MW and one MM lines, and hypotriploidy, hypertriploidy, or hypotetraploidy in the other lines. Structural abnormalities of chromosome 15 were observed in all MM lines. In five MM lines, frequent rearrangements were also found for chromosome numbers 1, 2, 5, and 12. A single chromosomal abnormality, as found in induced mouse plasmacytomas and resembling Burkitt lymphoma, was not found in mouse MM and MW. It was concluded that spontaneously originating C57BL MM of the 5T series is a better model for human MM than pristane-induced BALB/c or NZB plasmacytoma.


Asunto(s)
Aberraciones Cromosómicas , Mieloma Múltiple/genética , Macroglobulinemia de Waldenström/genética , Animales , Femenino , Genes de Inmunoglobulinas , Humanos , Cariotipificación , Masculino , Ratones , Ratones Endogámicos C57BL , Mieloma Múltiple/inmunología , Trasplante de Neoplasias , Células Tumorales Cultivadas , Macroglobulinemia de Waldenström/inmunología
19.
Leuk Lymphoma ; 4(5-6): 389-95, 1991.
Artículo en Inglés | MEDLINE | ID: mdl-27467673

RESUMEN

Using fluorescent in situ hybridization together with cell surface marker staining, we studied the expression of mRNA of IL-6 and mRNA of IL-1ß in bone marrow samples from human multiple myeloma patients. It is known that IL-6 can stimulate B cell growth and differentiation and recently it has been suggested that IL-6 is responsible for autocrine growth stimulation of myeloma cells and that IL-1 may play a role in bone resorption. These interleukins have previously been detected in the supernatants of cultured myeloma cells. Here we report the expression of IL-1ß mRNA by plasma cells, T cells and macrophages according to morphology and immunologic marker analysis, suggesting that not only myeloma cells but other cell types can also contribute to the production of IL-1ß and thus to bone-resorption. IL-6 mRNA could not be detected in plasma cells from bone marrow aspirates but were present in monocytes and T cells, suggesting that in vivo IL-6 stimulates the growth of myeloma cells in a paracrine instead of an autocrine way.

20.
J Telemed Telecare ; 7(4): 193-8, 2001.
Artículo en Inglés | MEDLINE | ID: mdl-11506753

RESUMEN

A feasibility study of teledermatology was undertaken in Groningen. Six general practitioners (GPs) sent digital images by email, along with relevant patient information, to dermatologists at the Martini Ziekenhuis Groningen, a general non-academic hospital. The dermatologists returned their responses by email. A total of 89 cases were dealt with in this way. On average, the GPs took three photographs per patient. The time taken by the GP to produce and transmit the images, and to implement the telemedicine advice received from the dermatologist, was 9 min and 3 min, respectively. The time spent on diagnosis, provision of advice and response by email amounted to 10 min for the dermatologist. It was concluded that teleconsultations by email are feasible in the daily practice of GPs and dermatologists in a general non-academic hospital. Generally, GPs, dermatologists and patients were satisfied with teleconsultations. Furthermore, GPs reported that 63% of the teleconsultations were of educational value.


Asunto(s)
Dermatología , Medicina Familiar y Comunitaria , Enfermedades de la Piel/diagnóstico , Telemedicina/normas , Actitud del Personal de Salud , Medicina Familiar y Comunitaria/métodos , Estudios de Factibilidad , Humanos , Relaciones Interprofesionales , Países Bajos , Derivación y Consulta , Factores de Tiempo
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