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2.
PLoS One ; 18(8): e0290101, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37590185

RESUMEN

BACKGROUND: Preterm birth is associated with life-long cost implications on the infant, family, health system, and society at large. The costs related to lost productivity at contributions at work during care of preterm infants are difficult to measure. We aimed to explore and document the unpriced costs parents incur following birth of a preterm infant in the first year of life in a low resource setting. METHODS: Thirty-nine mothers and five fathers of preterm infants who had ever attended the preterm follow-up clinic after discharge from Mulago National Referral Hospital, were included in a qualitative study between November 2019 and February 2020. Participants were purposively selected, and data were collected using four focused group discussions with mothers and in-depth interviews with the fathers lasting 30-70 minutes each. These were audio-recorded, transcribed and translated. The data were manually analysed using the thematic approach. FINDINGS: Three themes were generated: i) complex nature of the infant, ii) time to care for the infant, iii) mother as the predominant caregiver. The parents perceived preterm infants as delicate, complicated and their care more costly compared to those born at term. Expressions of need for time to care for their infants, frequent hospital visits and readmission were raised. Availability of the mother as the predominant caregiver some of whose roles cannot be delegated and their experiences following return to work after birth of a preterm were cited by the participants. CONCLUSION: The results highlight the unpriced costs incurred by the parents through disruption of the work pattern due to the actual and perceived needs of a preterm infant and time to care in a low resource setting. We recommend guidance on financial planning, development of policies and programs on social and financial support for parents and future studies on indirect costs of preterm care.


Asunto(s)
Recien Nacido Prematuro , Nacimiento Prematuro , Recién Nacido , Lactante , Femenino , Humanos , Cuidadores , Madres , Padres
3.
Contracept Reprod Med ; 8(1): 27, 2023 Apr 12.
Artículo en Inglés | MEDLINE | ID: mdl-37046325

RESUMEN

BACKGROUND: High levels of unmet need for contraception and unwanted pregnancies are high in developing countries despite efforts to reduce them. Long-acting reversible contraceptive (LARC) methods are more than 99% effective in preventing pregnancy. Discontinuation of LARC within the first year of initiation contributes to the high levels of unmet need. This study aimed to determine the prevalence and factors associated with the first-year discontinuation of LARC at Kawempe National Referral hospital. METHODS: A facility-based cross-sectional study was conducted from February 2020 to June 2021. We consecutively recruited 354 participants who discontinued a LARC (intrauterine device {IUD} and sub-dermal implant) during the study period after informed written consent. Data on duration of use, reasons for discontinuation, and factors associated were collected using a face-to-face interviewer-administered questionnaire and review of client records. Early LARC discontinuation was defined as the termination of the contraception within the first 12 months of use. Data were entered using SPSS version 14/0 and analyzed in STATA version 15. Prevalence was expressed as a proportion while logistic regression was used to assess factors associated with early LARC discontinuation. Variables with a p-value of < 0.05 were considered statistically significant. RESULTS: The proportion of first-year discontinuation of LARC was 29%. Women Age less than 25 years (OR = 5.07; 95% CI: 1.1-24.8) and those who desired a family size of fewer than four children (OR = 3.19; 95%CI: 1.2-8.7 ) were more likely to discontinue the LARC within 12 months of initiation after multivariate analysis. Method-related reasons for removal were painful menstrual cramps for implants, recurrent infections for IUDs, and a non-side effect reason was the desire to get pregnant. CONCLUSION: A high proportion of women discontinue LARC within 12 months following initiation. Young adults and those who desire small families are more likely to have first-year discontinuation of LARC. We recommend age-specific counseling for patients receiving the LARC and further studies looking at the depth analysis of reasons for the first-year discontinuation.

4.
PLoS One ; 18(4): e0284894, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37098025

RESUMEN

BACKGROUND: Preterm birth is the leading cause of neonatal deaths and the second leading cause of death in children under five after pneumonia. The study aimed at improving the management of preterm birth through the development of protocols for standardization of care. METHODS: The study was conducted in Mulago National Referral Labor ward in two phases. A total of 360 case files were reviewed and mothers whose files had missing data interviewed for clarity for both the baseline audit and the re-audit. Chi squares were used to compare results for the baseline and the re-audit. RESULTS: There was significant improvement in four parameters out of the six that were used to assess quality of care and these were 32% increase in administration of Dexamethasone for fetal lung maturity, 27% increase in administration of Magnesium Sulphate for fetal neuroprotection and 23% increase in anti-biotic administration. A 14% reduction noted in patients who received no intervention. However, there was no change in the administration of Tocolytic. CONCLUSION: The results of this study have shown that protocols standardize care and improve the quality of care in preterm delivery to optimize outcomes.


Asunto(s)
Trabajo de Parto Prematuro , Nacimiento Prematuro , Tocolíticos , Embarazo , Femenino , Niño , Recién Nacido , Humanos , Nacimiento Prematuro/prevención & control , Trabajo de Parto Prematuro/prevención & control , Tocolíticos/uso terapéutico , Sulfato de Magnesio/uso terapéutico , Atención Prenatal/métodos
5.
BMJ Open ; 11(9): e043989, 2021 09 14.
Artículo en Inglés | MEDLINE | ID: mdl-34521654

RESUMEN

INTRODUCTION: Babies born preterm often have challenges in feeding, temperature control and breathing difficulty and are prone to infection during the neonatal period. These usually necessitate admission to the neonatal intensive care unit (NICU). Admission to NICU disrupts the mother-baby bonding. OBJECTIVE: This study explored the lived experiences of mothers with preterm babies admitted to NICU in a low-resource setting. STUDY DESIGN: This was a qualitative study where 16 participants took part in indepth interviews and 35 in focus group discussions. We included mothers who delivered and were caring for preterm babies at the NICU of Mulago National Referral Hospital. STUDY SETTING: Data were collected from a public hospital, which works as a district and national referral hospital located in the capital of Uganda. PARTICIPANTS: Fifty-one mothers with preterm babies in the NICU were sampled and recruited after informed consent. Data were analysed using manual thematic analysis. RESULTS: There were six themes on the experiences of mothers of preterm babies in NICU: constant worry and uncertainty about the survival of their babies, baby feeding challenges, worries of discharge, communication gaps between mothers and nurses, community acceptability and disdain for preterm babies, and financial challenges. CONCLUSIONS AND RECOMMENDATIONS: Mothers of preterm babies admitted to NICU in a low-resource setting still need a lot of support other than the medical care given to their babies. Support groups in the hospital and community are recommended to help in dealing with these challenges.


Asunto(s)
Unidades de Cuidado Intensivo Neonatal , Madres , Femenino , Grupos Focales , Humanos , Lactante , Recién Nacido , Apego a Objetos , Investigación Cualitativa
6.
Reprod Health ; 17(1): 72, 2020 May 24.
Artículo en Inglés | MEDLINE | ID: mdl-32448285

RESUMEN

BACKGROUND: Low contraceptive uptake exposes women to unintended pregnancies and often the resultant obstetric complications. The immigrant communities especially from countries with low contraceptive use present a unique challenge. The main objective of the study was to describe modern contraceptive use and associated factors among married Somali women living in Kampala. METHODS: A community based cross sectional survey was conducted among Somali women living in Kampala from August to November 2016. Using consecutive sampling, 341 respondents were recruited after informed consent. Data was collected using interviewer administered questionnaires on contraceptives use and factors associated. Data was entered in Epidata 3.1 and analyzed using STATA 11.0. Logistic regression analysis was used to determine the factors associated with use of modern contraceptives. RESULTS: Majority of the participants were refugees 317/341(94%), with a mean age of 30.4 (±6.7) years and 136/341 (40%) had no formal education. More than 325/341 (95%) of respondents desired to have five or more children (Average 9 + 3) and 164/341 (45%) had five or more living children. Only 29% of women were using modern contraceptives, of which 51% used oral pills, 15% condoms and 15% injectables. Having tertiary education, one who had ever used modern contraceptives and desire for spacing of more than two years were independently associated with current of use modern contraceptives. CONCLUSIONS: The Contraceptive prevalence rate among married Somali women in Kampala was (29%). A majority of the respondents were using short acting contraceptive methods. Attaining tertiary education, ever use of modern contraceptives, those whose source of contraceptive information was health worker and desire to space for more than two years were associated with current use of modern contraceptives. There is a need for improvement of girl child education, contraceptive awareness and male involvement to increase contraceptive uptake in this community. Research looking at attitude of this community towards use of long term contraception is recommended.


Asunto(s)
Conducta Anticonceptiva/etnología , Servicios de Planificación Familiar/estadística & datos numéricos , Conocimientos, Actitudes y Práctica en Salud , Matrimonio , Refugiados , Adulto , Estudios Transversales , Escolaridad , Femenino , Humanos , Factores Socioeconómicos , Somalia/etnología , Uganda , Adulto Joven
7.
SAGE Open Med ; 8: 2050312120970719, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-35154757

RESUMEN

OBJECTIVES: The aim of this study was to determine the proportion and mechanism of resistance to ceftriaxone and ceftazidime among Klebsiella species and Escherichia coli and examine the burden of methicillin-resistant Staphylococcus aureus from caesarean section surgical site infections in Uganda. METHODS: Wound swabs from 109 caesarean section surgical site infections were cultured for pathogenic bacteria following standard microbiological procedures. The Kirby-Bauer disc diffusion technique was used for antimicrobial susceptibility testing. Methicillin-resistant S. aureus diagnosis was based on polymerase chain reaction testing for the mecA gene. Data were analysed using SPSS-IBM Statistics v.20. RESULTS: A total of 118 pathogens were recovered from 93 (85%) of 109 surgical site infections swabs. Of the 118 pathogens, gram-negative bacteria were 69 (58.5%), including 44 (37.3%) Klebsiella species, 11 (9.3%) E. coli, 6 (5.1%) Citrobacter species, and 8 (6.8%) other gram-negative bacteria. In total, 49 of the 118 pathogens were gram-positive bacteria, including 34 (28.8%) S. aureus and 15 (12.7%) Enterococci species. Resistance to ceftriaxone was detected in all 11 (100%) of the E. coli and in 43 (97.7%) of the 44 Klebsiella species and to ceftazidime in all 11 (100%) of the E. coli and 40 (91%) of the 44 Klebsiella species. Extended-spectrum beta-lactamase explained resistance to ceftazidime in 10 (91%) of the 11 E. coli and 19 (48%) of the 40 Klebsiella species. Carbapenemase production explained 15 (38%) of the 40 ceftazidime-resistant Klebsiella species. Methicillin-resistant S. aureus was detected in 91% of S. aureus. CONCLUSION: Klebsiella species, E. coli, and S. aureus-majority methicillin-resistant S. aureus dominated the pathogens in caesarean section surgical site infections. Almost all of the E. coli and Klebsiella species were resistant to ceftriaxone or ceftazidime. Extended-spectrum beta-lactamase was the underlying resistance mechanism among almost all of the ceftriaxone- or ceftazidime-resistant E. coli. However, this mechanism accounted for less than half of ceftriaxone- or ceftazidime-resistant Klebsiella species, where carbapenemases accounted for 40% of the resistance, a finding previously unreported in Uganda.

8.
BMC Res Notes ; 10(1): 510, 2017 Oct 25.
Artículo en Inglés | MEDLINE | ID: mdl-29070052

RESUMEN

BACKGROUND: Antenatal iron supplementation is a cost effective way of reducing iron deficiency anaemia among pregnant women in resource limited countries like Uganda. Poor adherence to iron supplements has limited its effectiveness in reducing maternal anaemia as evidenced by the high burden of iron deficiency anemia in Sub-saharan Africa. The aim of this study was to determine the level of and factors associated with adherence to iron supplementation among women attending antenatal clinic at Mulago National Referral Hospital, Kampala, Uganda. METHODS: Three hundred and seventy pregnant women were recruited in a cross sectional survey in Mulago National Referral Hospital antenatal clinic after informed consent between February and April 2014. Levels of adherence to iron supplements were assessed using visual analogue scale and factors associated collected using an interviewer administered questionnaire. RESULTS: About 12% (11.6%) of the mothers attending the antenatal clinic adhered to iron supplements over 30 day period. Mothers who had had four or more antenatal visits prior to the survey [odds ratio (OR) = 1.49, 95% confidence interval (CI) 1.12-1.97], had more than 2 week supply of iron supplements in the previous visit (OR 2.81, 95% CI 1.02-1.09), prior health education (OR 1.56, 95% CI 1.07-2.29) were more likely to adhere to iron supplements. Inadequate drug supplies and fear for side effects were the main reasons why participants missed the iron supplements. CONCLUSIONS: There was low adherence to iron supplements among mothers attending antenatal clinic at Mulago National Referral  Hospital. We recommend a national evaluation of adherence to iron supplements and look at ways of increasing adherence.


Asunto(s)
Anemia Ferropénica/prevención & control , Suplementos Dietéticos , Hierro/administración & dosificación , Cumplimiento de la Medicación/estadística & datos numéricos , Complicaciones Hematológicas del Embarazo/prevención & control , Atención Prenatal/métodos , Oligoelementos/administración & dosificación , Adulto , Estudios Transversales , Femenino , Humanos , Embarazo , Uganda , Adulto Joven
9.
Afr J Reprod Health ; 18(3): 67-77, 2014 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-25438511

RESUMEN

This study describes the fertility intentions and discusses the potential reproductive health needs of post-natal HIV-infected Ugandan women. HIV-infected mothers attending post-natal services in Kampala, Uganda participated in this cross-sectional study using structured interviewer administered questionnaires. Descriptive statistics and logistic regression models were used to identify predictors of desire for more children. Among 403 participants, 35% desired more children. Of these, 25% wanted another child within 2 years and 75% within 3 years or more. In multivariable analyses, believing that one's partners wanted more children (OR = 2.44; 95% CI = 1.30, 4.59) was associated with the desire for future children while having more living children was negatively associated with the desire for future children (OR = 0.08; 95% CI = 0.02, 0.39). A minority of women desired future pregnancies, and most wanted to delay pregnancy for 3 years. These women are in need of family planning (FP) methods to meet stated desires to delay or end future pregnancies. Perceived partner desire for children also impacts on women's fertility intentions, highlighting the importance of engaging men during the post-natal period.67-77)


Asunto(s)
Fertilidad/fisiología , Seropositividad para VIH , VIH/inmunología , Transmisión Vertical de Enfermedad Infecciosa/prevención & control , Atención Posnatal , Conducta Reproductiva/fisiología , Adulto , Estudios Transversales , Servicios de Planificación Familiar/organización & administración , Femenino , Seropositividad para VIH/epidemiología , Seropositividad para VIH/psicología , Seropositividad para VIH/transmisión , Humanos , Intención , Masculino , Evaluación de Necesidades , Atención Posnatal/métodos , Atención Posnatal/psicología , Embarazo , Parejas Sexuales/psicología , Tiempo para Quedar Embarazada , Uganda/epidemiología
10.
BMC Res Notes ; 7: 793, 2014 Nov 08.
Artículo en Inglés | MEDLINE | ID: mdl-25380673

RESUMEN

BACKGROUND: Malaria still remains the leading cause of childhood morbidity and mortality in Uganda. Interventions like malaria vaccines which reduce the malaria burden are needed in malaria endemic communities. There is need to establish baseline characteristics in vaccine trial study sites. This study determined the following baseline malariometric indices: spleen rates, bed net use, malaria parasitaemia and malaria episodes in an inception cohort of children aged 12 - 60 months in Iganga district, Uganda. METHODS: In a longitudinal cohort study, 748 children were enrolled with 397 in an active follow up arm and 351 in a passive arm. The children in the two arms were followed for 6 months to determine the incidence of malaria episodes. RESULTS: The overall baseline spleen rate was 8.2% (61/748) among the study participants. Of the households surveyed, about 36% reported using bed nets and almost 30% of the users had insecticide-treated nets. 274 (36.6%) of the study participants had a history of fever in the past 24 hrs at the time of the baseline survey. All participants had a peripheral blood smear for malaria parasites done at enrollment with 76.8% having the asexual form of malaria parasites. The malaria episodes per child per year were 1.5 and 0.79 in the active and passive follow up arms respectively. CONCLUSIONS: There is a high prevalence of malaria asexual parasitaemia in children below five years. The bed net usage still remains low among this population. These baseline malariometric indices have important implication for malaria control interventions.


Asunto(s)
Vacunas contra la Malaria/inmunología , Malaria/inmunología , Malaria/prevención & control , Distribución por Edad , Preescolar , Estudios de Seguimiento , Humanos , Incidencia , Lactante , Mosquiteros Tratados con Insecticida , Malaria/epidemiología , Factores de Tiempo , Uganda/epidemiología
11.
Int J Gynaecol Obstet ; 126(1): 37-40, 2014 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-24786141

RESUMEN

OBJECTIVE: To determine prevalent aerobic cervical bacteria and sensitivity to commonly used antibiotics in patients with advanced cervical cancer before and after 4 weeks of external beam radiotherapy (EBRT). METHODS: Cervical swabs were collected prior to the initial radiation dose and after 4 weeks of radiotherapy at Mulago Hospital. Aerobic culture was performed on blood agar, chocolate agar, and MacConkey agar, and incubated at 35-37 ° for 24-48 hours. Isolates were identified using colonial morphology, Gram staining, and biochemical analysis. Sensitivity testing was performed via Kirby-Bauer disk diffusion and dilution. Differences in the proportions of bacteria isolated before and after radiotherapy were compared. Paired t test was used to obtain differences in sensitivity before and after radiotherapy. RESULTS: Normal flora increased significantly after EBRT (P=0.02). There was no significant change in overall proportion of positive cultures. Sensitivity to commonly used antibiotics improved (P=0.05) and resistance significantly decreased (P=0.005). Significant differences were seen mainly with ciprofloxacin, ceftriaxone, and gentamicin. CONCLUSION: Four weeks of EBRT did not sterilize the cervix but resulted in an increase in normal flora. Radiotherapy appeared to reduce resistance to commonly used antibiotics. Sensitivity to chloramphenicol was higher than for the more commonly used antibiotics.


Asunto(s)
Cuello del Útero/microbiología , Microbiota/efectos de la radiación , Infecciones del Sistema Genital/microbiología , Neoplasias del Cuello Uterino/radioterapia , Adulto , Anciano , Anciano de 80 o más Años , Bacterias Aerobias/efectos de la radiación , Femenino , Humanos , Pruebas de Sensibilidad Microbiana , Persona de Mediana Edad , Estudios Prospectivos , Infecciones del Sistema Genital/complicaciones , Centros de Atención Secundaria , Uganda , Neoplasias del Cuello Uterino/complicaciones , Neoplasias del Cuello Uterino/microbiología
12.
Malar J ; 11: 310, 2012 Sep 05.
Artículo en Inglés | MEDLINE | ID: mdl-22950456

RESUMEN

BACKGROUND: Malaria in pregnancy is a major health problem that can cause maternal anaemia, stillbirth, spontaneous abortion, low birth weight and intra-uterine stunting. The WHO recommends use of sulphadoxine-pyrimethamine (SP) for intermittent preventive treatment of malaria during pregnancy (IPTp) in endemic areas. Towards monitoring and assessing IPTp coverage in the population, the Roll Back Malaria Partnership recommends the use of self-reported data. The aim of this study was to assess the validity of self-reported IPTp by testing for sulphadoxine in maternal blood at delivery. METHODS: Two hundred and four pregnant women were consented and enrolled in a cross-sectional study in Mulago National Referral Hospital in Kampala Uganda. - Participants who reported a history of taking sulpha-containing drugs like co-trimoxazole , those who were not sure of dates relating to last menstrual period or who took IPTp within the first 20 weeks of gestation were excluded from the study. Data on demographic characteristics, obstetric history, and delivery outcome were collected. At birth, maternal venous blood was taken off aseptically and used to make thick blood smears for malaria parasites and plasma for determining sulphadoxine using high performance liquid chromatography (HPLC). RESULTS: Of 120 participants who self reported to have used IPTp, 35 (29.2%) tested positive for sulphadoxine by HPLC, while 63 (75%) of 84 patients who reported not having used IPTp tested negative for sulphadoxine. Participants possessing post-primary education were more likely to have reported using IPTp. The low agreement (kappa coefficient = 0.037) between self-report and actual presence of the drug in the blood casts doubt on the validity of self-reported data in estimating IPTp coverage. CONCLUSIONS: The results of this study question the accuracy of self-reported data in estimating IPTp coverage in the population. More studies on validity of self reported data are recommended. Since the validity of IPTp self reports is vital for guiding policy on malaria control in pregnancy, ways should be sought to improve accuracy of the information from such reports.


Asunto(s)
Antimaláricos/administración & dosificación , Utilización de Medicamentos/estadística & datos numéricos , Malaria/prevención & control , Cumplimiento de la Medicación/estadística & datos numéricos , Complicaciones Infecciosas del Embarazo/prevención & control , Pirimetamina/administración & dosificación , Automedicación/métodos , Sulfadoxina/administración & dosificación , Adolescente , Adulto , Antimaláricos/análisis , Sangre/parasitología , Quimioprevención/métodos , Cromatografía Líquida de Alta Presión , Estudios Transversales , Combinación de Medicamentos , Femenino , Humanos , Plasma/química , Embarazo , Pirimetamina/análisis , Sulfadoxina/análisis , Uganda , Adulto Joven
13.
Artículo en Inglés | AIM (África) | ID: biblio-1265164

RESUMEN

Pregnancy-associated malaria is a major global health concern. To assess the Plasmodium falciparum burden in pregnancy we conducted a cross-sectional study at Mulago Hospital in Kampala; Uganda. Malaria prevalence by each of three measures-peripheral smear; placental smear; and placental histology was 9(35/391); 11.3(44/389); and 13.9(53/382) respectively. Together; smear and histology data yielded an infection rate of 15.5(59/380) of active infections and 4.5(17/380) of past infections; hence 20had been or were infected when giving birth. A crude parity dependency was observed with main burden being concentrated in gravidae 1 through gravidae 3. Twenty-two percent were afflicted by anaemia and 12.2delivered low birthweight babies. Active placental infection and anaemia showed strong association (OR=2.8) whereas parity and placental infection had an interactive effect on mean birthweight (P=.036). Primigravidae with active infection and multigravidae with past infection delivered on average lighter babies. Use of bednet protected significantly against infection (OR=0.56) whilst increased haemoglobin level protected against low birthweight (OR=0.83) irrespective of infection status. Albeit a high attendance at antenatal clinics (96.8); there was a poor coverage of insecticide-treated nets (32) and intermittent preventive antimalarial treatment (41.5)


Asunto(s)
Malaria , Malaria/sangre , Plasmodium falciparum , Embarazo , Derivación y Consulta
14.
Malar Res Treat ; 2010: 913857, 2010.
Artículo en Inglés | MEDLINE | ID: mdl-22347669

RESUMEN

Pregnancy-associated malaria is a major global health concern. To assess the Plasmodium falciparum burden in pregnancy we conducted a cross-sectional study at Mulago Hospital in Kampala, Uganda. Malaria prevalence by each of three measures-peripheral smear, placental smear, and placental histology was 9% (35/391), 11.3% (44/389), and 13.9% (53/382) respectively. Together, smear and histology data yielded an infection rate of 15.5% (59/380) of active infections and 4.5% (17/380) of past infections; hence 20% had been or were infected when giving birth. A crude parity dependency was observed with main burden being concentrated in gravidae 1 through gravidae 3. Twenty-two percent were afflicted by anaemia and 12.2% delivered low birthweight babies. Active placental infection and anaemia showed strong association (OR = 2.8) whereas parity and placental infection had an interactive effect on mean birthweight (P = .036). Primigravidae with active infection and multigravidae with past infection delivered on average lighter babies. Use of bednet protected significantly against infection (OR = 0.56) whilst increased haemoglobin level protected against low birthweight (OR = 0.83) irrespective of infection status. Albeit a high attendance at antenatal clinics (96.8%), there was a poor coverage of insecticide-treated nets (32%) and intermittent preventive antimalarial treatment (41.5%).

15.
Proc Natl Acad Sci U S A ; 103(37): 13795-800, 2006 Sep 12.
Artículo en Inglés | MEDLINE | ID: mdl-16945914

RESUMEN

The harmful effects of pregnancy-associated malaria (PAM) are engendered by the heavy sequestration of Plasmodium falciparum-parasitized RBCs in the placenta. It is well documented that this process is mediated by interactions of parasite-encoded variant surface antigens and placental receptors. A P. falciparum erythrocyte membrane protein 1 variant, VAR2CSA, and the placental receptor chondroitin sulfate A (CSA) are currently the focus of PAM research. A role for immunoglobulins (IgG and IgM) from normal human serum and hyaluronic acid as additional receptors in placental sequestration have also been suggested. We show here (i) that CSA and nonimmune IgG/IgM binding are linked phenotypes of in vitro-adapted parasites, (ii) that a VAR2CSA variant shown to bind CSA also harbors IgG- and IgM-binding domains (DBL2-X, DBL5-epsilon, and DBL6-epsilon), and (iii) that IgG and IgM binding and adhesion to multiple receptors (IgG/IgM/HA/CSA) rather than the exclusive binding to CSA is a characteristic of fresh Ugandan placental isolates. These findings are of importance for the understanding of the pathogenesis of placental malaria and have implications for the ongoing efforts to develop a global PAM vaccine.


Asunto(s)
Antígenos de Protozoos/metabolismo , Eritrocitos/parasitología , Inmunoglobulina G/metabolismo , Inmunoglobulina M/metabolismo , Malaria Falciparum/inmunología , Placenta/parasitología , Plasmodium falciparum/inmunología , Complicaciones Parasitarias del Embarazo/inmunología , Adolescente , Adulto , Animales , Antígenos de Protozoos/genética , Adhesión Celular , Sulfatos de Condroitina/metabolismo , Eritrocitos/inmunología , Femenino , Humanos , Ácido Hialurónico/metabolismo , Malaria Falciparum/metabolismo , Malaria Falciparum/parasitología , Placenta/inmunología , Plasmodium falciparum/metabolismo , Embarazo , Complicaciones Parasitarias del Embarazo/metabolismo , Complicaciones Parasitarias del Embarazo/parasitología , Mapeo de Interacción de Proteínas , Estructura Terciaria de Proteína/genética
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