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https://www.readbyqxmd.com/read/28339500/detecting-congenital-malformations-lessons-learned-from-the-mpepu-study-botswana
#1
Gbolahan Ajibola, Rebecca Zash, Roger L Shapiro, Oganne Batlang, Kerapetse Botebele, Kara Bennett, Florence Chilisa, Erik von Widenfelt, Joseph Makhema, Shahin Lockman, Lewis B Holmes, Kathleen M Powis
INTRODUCTION: A large and increasing number of HIV-infected women are conceiving on antiretroviral treatment (ART). While most antiretrovirals are considered safe in pregnancy, monitoring for rare pregnancy and infant adverse outcomes is warranted. METHODS: We conducted a retrospective secondary analysis nested within a clinical trial of infant cotrimoxazole vs. placebo prophylaxis in Botswana (the Mpepu Study). Infants were examined at birth, and at least every 3 months through 18 months of age...
2017: PloS One
https://www.readbyqxmd.com/read/28335280/pregnancy-vaccination-with-gold-glyco-nanoparticles-carrying-listeria-monocytogenes-peptides-protects-against-listeriosis-and-brain-and-cutaneous-associated-morbidities
#2
Ricardo Calderón-Gonzalez, Héctor Terán-Navarro, Elisabet Frande-Cabanes, Eva Ferrández-Fernández, Javier Freire, Soledad Penadés, Marco Marradi, Isabel García, Javier Gomez-Román, Sonsoles Yañez-Díaz, Carmen Álvarez-Domínguez
Listeriosis is a fatal infection for fetuses and newborns with two clinical main morbidities in the neonatal period, meningitis and diffused cutaneous lesions. In this study, we vaccinated pregnant females with two gold glyconanoparticles (GNP) loaded with two peptides, listeriolysin peptide 91-99 (LLO91-99) or glyceraldehyde-3-phosphate dehydrogenase 1-22 peptide (GAPDH1-22). Neonates born to vaccinated mothers were free of bacteria and healthy, while non-vaccinated mice presented clear brain affections and cutaneous diminishment of melanocytes...
August 19, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28334949/mycoplasma-hominis-ureaplasma-urealyticum-and-chlamydia-trachomatis-respiratory-colonization-in-malaysian-preterm-infants
#3
Khuen Foong Ng, Kah Kee Tan, Mi-Chelle Chok, Nurul Zamil Mohd Muzzamil, Pauline Choo, Umathevi Paramasivam, Marlindawati Mohd Ali, Jun Yan Goh, Wan Ying Gan
This prospective observational study aims to determine the incidence, predictors and clinical features of Mycoplasma hominis (MH), Ureaplasma urealyticum (UU) and Chlamydia trachomatis (CT) respiratory colonization in infants <37 weeks of gestation. A total of 200 preterm newborns admitted to a tertiary center in Malaysia between 2013 and 2015 for increased breathing effort had their respiratory secretions tested for these bacteria by polymerase chain reaction. Fifteen of the 200 (7.5%) infants were detected to have these organisms in their respiratory tracts...
March 2, 2017: Journal of Tropical Pediatrics
https://www.readbyqxmd.com/read/28332092/the-spectrum-of-neuropathological-changes-associated-with-congenital-zika-virus-infection
#4
Leila Chimelli, Adriana S O Melo, Elyzabeth Avvad-Portari, Clayton A Wiley, Aline H S Camacho, Vania S Lopes, Heloisa N Machado, Cecilia V Andrade, Dione C A Dock, Maria Elisabeth Moreira, Fernanda Tovar-Moll, Patricia S Oliveira-Szejnfeld, Angela C G Carvalho, Odile N Ugarte, Alba G M Batista, Melania M R Amorim, Fabiana O Melo, Thales A Ferreira, Jacqueline R L Marinho, Girlene S Azevedo, Jeime I B F Leal, Rodrigo F Madeiro da Costa, Stevens Rehen, Monica B Arruda, Rodrigo M Brindeiro, Rodrigo Delvechio, Renato S Aguiar, Amilcar Tanuri
A major concern associated with ZIKV infection is the increased incidence of microcephaly with frequent calcifications in infants born from infected mothers. To date, postmortem analysis of the central nervous system (CNS) in congenital infection is limited to individual reports or small series. We report a comprehensive neuropathological study in ten newborn babies infected with ZIKV during pregnancy, including the spinal cords and dorsal root ganglia (DRG), and also muscle, pituitaries, eye, systemic organs, and placentas...
March 22, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28331097/loss-of-the-human-cytomegalovirus-us16-protein-abrogates-virus-entry-into-endothelial-and-epithelial-cells-by-reducing-the-virion-content-of-the-pentamer
#5
Anna Luganini, Noemi Cavaletto, Stefania Raimondo, Stefano Geuna, Giorgio Gribaudo
The Human Cytomegalovirus (HCMV) US12 gene family encodes a group of predicted seven-transmembrane proteins whose functions have yet to be established. While inactivation of individual US12 members in laboratory strains of HCMV does not affect viral replication in fibroblasts, disruption of the US16 gene in the low-passage TR strain prevents viral growth in endothelial and epithelial cells. In these cells, the US16-null viruses fail to express IE, E, and L viral proteins due to a defect which occurs prior to IE gene expression...
March 22, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28329702/protecting-the-newborn-and-young-infant-from-infectious-diseases-lessons-from-immune-ontogeny
#6
REVIEW
Tobias R Kollmann, Beate Kampmann, Sarkis K Mazmanian, Arnaud Marchant, Ofer Levy
Infections in the first year of life are common and often severe. The newborn host demonstrates both quantitative and qualitative differences to the adult in nearly all aspects of immunity, which at least partially explain the increased susceptibility to infection. Here we discuss how differences in susceptibility to infection result not out of a state of immaturity, but rather reflect adaptation to the particular demands placed on the immune system in early life. We review the mechanisms underlying host defense in the very young, and discuss how specific developmental demands increase the risk of particular infectious diseases...
March 21, 2017: Immunity
https://www.readbyqxmd.com/read/28326082/neonatal-group-b-streptococcal-disease-in-otherwise-healthy-infants-failure-of-specific-neonatal-immune-responses
#7
Alessandro Borghesi, Mauro Stronati, Jacques Fellay
Only a small proportion of newborn infants exposed to a pathogenic microorganism develop overt infection. Susceptibility to infection in preterm infants and infants with known comorbidities has a likely multifactorial origin and can be often attributed to the concurrence of iatrogenic factors, environmental determinants, underlying pathogenic processes, and probably genetic predisposition. Conversely, infection occurring in otherwise healthy full-term newborn infants is unexplained in most cases. Microbial virulence factors and the unique characteristics of the neonatal immune system only partially account for the interindividual variability in the neonatal immune responses to pathogens...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28325675/placental-and-colostral-transfer-of-antibodies-reactive-with-enteropathogenic-escherichia-coli-intimins-%C3%AE-%C3%AE-or-%C3%AE
#8
Silvia P N Altman, Milene Tino-De-Franco, Cristiane B Carbonare, Patricia Palmeira, Solange B Carbonare
OBJECTIVE: Intimins are protein adhesins of enteropathogenic Escherichia coli (EPEC) and enterohemorrhagic E. coli (EHEC) capable of inducing attachment and effacement lesions in enterocytes. Anti-intimin antibodies are important for the protection from EPEC and EHEC infections because these antibodies inhibit bacterial adhesion and impair the initial step of the pathogenesis. We studied the transfer of maternal anti-intimin antibodies from healthy Brazilian mothers to their newborns through the placenta and colostrum...
March 19, 2017: Jornal de Pediatria
https://www.readbyqxmd.com/read/28321789/longitudinal-study-of-bovine-rotavirus-group-a-in-newborn-calves-from-vaccinated-and-unvaccinated-dairy-herds
#9
Thaís Gomes Rocha, Fernanda Dornelas Florentino Silva, Fábio Gregori, Amauri Alcindo Alfieri, Maria da Glória Buzinaro, José Jurandir Fagliari
Reports of rotavirus excretion in calves usually result from cross-sectional studies, and in face of the conflicting results regarding protection of calves born to vaccinated dams against diarrhea, the aim of the present study was to evaluate rotavirus excretion in dairy calves born to vaccinated or unvaccinated dams, to identify the genotypes of bovine rotavirus group A (RVA) strains isolated from these animals as well as to investigate characteristics of the disease in naturally occurring circumstances throughout the first month of life...
March 20, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28321310/neonatal-cholestasis-mimicking-biliary-atresia-could-it-be-urinary-tract-infection
#10
Noella Maria Delia Pereira, Ira Shah
Cholestasis can occur in newborns due to infections. However, the manifestations of the underlying infections usually dominate the presentation. We present a 2-month-old infant who presented with jaundice and no fever or signs of systemic illness. Liver biopsy was suggestive of cholangitis. He was subsequently detected to have urinary tract infection with Klebsiella pneumoniae. The child was treated with appropriate antibiotics for 2 weeks following which the cholestasis resolved. Thus, neonatal cholestasis due to infections can also occur in the post-neonatal period without clinical manifestations of an underlying infection...
2017: SAGE open medical case reports
https://www.readbyqxmd.com/read/28320497/laboratory-evaluation-of-infants-with-possible-congenital-zika-virus-infection
#11
Susan Givens Bell
Our understanding of the effects of maternal Zika virus infection on the newborn continues to evolve. First discovered in 1947 in the Zika Forest in Uganda, the world became more aware of the virus in 2015, with reports of hundreds of cases of microcephaly in Brazilian newborns whose mothers reported symptoms related to Zika viral infection during pregnancy. This article reviews the current guidelines for laboratory evaluation of newborns with possible congenital Zika virus infection.
March 1, 2017: Neonatal Network: NN
https://www.readbyqxmd.com/read/28319846/presence-of-cytomegalovirus-in-urine-and-blood-of-pregnant-women-with-primary-infection-might-be-associated-with-fetal-infection
#12
Marie-Luce Delforge, Elena Costa, Françoise Brancart, Deborah Goldman, Isabel Montesinos, Siham Zaytouni, Arnaud Marchant, Catherine Donner
BACKGROUND: Cytomegalovirus (CMV) congenital infection can result from primary infection, reinfection or reactivation among pregnant women. The risk of vertical transmission is much higher in case of primary infection, and the transmission rate increases with gestational age. However there are still many questions about maternal markers that can predict whether the virus will be transmitted to the fetus. OBJECTIVES: To investigate the relationship between the presence and the quantity of CMV in urine and blood of women presenting a primary CMV infection during pregnancy and the presence of congenital infection in their offspring...
March 7, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28318966/structural-biology-of-the-zika-virus
#13
REVIEW
Yi Shi, George F Gao
Zika virus (ZIKV), a Flaviviridae family member transmitted to humans by mosquitoes, has emerged as a major health concern. ZIKV infections can cause serious neurological complications in adults, and infection in pregnant women can cause congenital malformations, including fetal and newborn microcephaly. In response to this emerging concern, the structural virology field was quick to explore the features of ZIKV. These efforts have provided significant insights into ZIKV pathogenesis, and have identified targets for drug design...
March 15, 2017: Trends in Biochemical Sciences
https://www.readbyqxmd.com/read/28318770/expression-of-cathepsin-s-in-bcg-converts-it-into-a-pro-apoptotic-and-highly-immunogenic-strain
#14
Alice Lau, Vijender Singh, Hafid Soualhine, Zakaria Hmama
BACKGROUND: BCG vaccine, introduced almost 100years ago, is the only option to prevent TB disease. It effectively protects newborns from meningeal TB but fails to prevent adult pulmonary TB. TB kills 1.3million people annually in areas where BCG vaccination is widely practiced. Thus, more effective TB vaccines are urgently needed. Others and we have shown that BCG mimics features of virulent M. tuberculosis, in particular attenuation of essential macrophage functions such as phagosome maturation and antigen presentation...
March 16, 2017: Vaccine
https://www.readbyqxmd.com/read/28318359/zika-virus-and-eye
#15
Rupesh Agrawal, Hnin Hnin Oo, Praveen Kumar Balne, Lisa Ng, Louis Tong, Yee Sin Leo
Zika virus (ZIKV), a mosquito-borne flavivirus, is the latest global health concern. Transmission is mainly via Aedes mosquitoes and the infection can be diagnosed on molecular or serologic testings. It typically causes a mild self-remitting illness of low-grade fever, maculopapular rash, and myalgia, but when severe, it is associated with neurological deficits and congenital structural defects. Ocular manifestations are usually mild like nonpurulent conjunctivitis in adults, though it may be linked to uveitis, maculopathy, and hypertensive iridocyclitis...
March 20, 2017: Ocular Immunology and Inflammation
https://www.readbyqxmd.com/read/28316896/vector-competence-of-anopheles-and-culex-mosquitoes-for-zika-virus
#16
Brittany L Dodson, Jason L Rasgon
Zika virus is a newly emergent mosquito-borne flavivirus that has caused recent large outbreaks in the new world, leading to dramatic increases in serious disease pathology including Guillain-Barre syndrome, newborn microcephaly, and infant brain damage. Although Aedes mosquitoes are thought to be the primary mosquito species driving infection, the virus has been isolated from dozens of mosquito species, including Culex and Anopheles species, and we lack a thorough understanding of which mosquito species to target for vector control...
2017: PeerJ
https://www.readbyqxmd.com/read/28316418/seroepidemiology-of-toxoplasma-gondii-infection-in-pregnant-women-in-west-iran-determined-by-elisa-and-pcr-analysis
#17
Gholam Reza Ahmadpour, Behrouz Ezatpour, Ramtin Hadighi, Hormoz Oormazdi, Lame Akhlaghi, Fatemeh Tabatabaei, Mehdi Azami, Mozafar Mohammadi Nejad, Hossein Mahmoudvand
Congenital toxoplasmosis can lead to severe damage for the fetus and newborn. Considering that the seroepidemiology of Toxoplasma infection in the pregnant women is poorly studied in west of Iran, the main objective of this study was to estimate the seroprevalence and potential risk factors for congenital toxoplasmosis in Delfan, Iran. In this cross-sectional study, the serum samples obtained from pregnant women who were referred to health centers for routine monitoring of the pregnancy. Totally, 264 sera were screened for IgG and IgM anti-T...
March 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28316097/improved-postnatal-care-is-needed-to-maintain-gains-in-neonatal-survival-after-the-implementation-of-the-helping-babies-breathe-initiative
#18
J Wrammert, A Kc, U Ewald, M Målqvist
AIM: Helping Babies Breathe (HBB) is a neonatal resuscitation protocol proven to reduce intrapartum-related mortality in low-income settings. The aim of this study was to describe the timing and causes of neonatal in-hospital deaths before and after HBB training at a maternity health facility in Nepal. METHODS: A prospective cohort study was conducted at the facility between July 2012 and September 2013. All 137 staff, including medical doctors and midwives, were trained in January 2013...
March 17, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28301484/health-facility-service-availability-and-readiness-for-intrapartum-and-immediate-postpartum-care-in-malawi-a-cross-sectional-survey
#19
Naoko Kozuki, Lolade Oseni, Angella Mtimuni, Reena Sethi, Tambudzai Rashidi, Fannie Kachale, Barbara Rawlins, Shivam Gupta
This analysis seeks to identify strengths and gaps in the existing facility capacity for intrapartum and immediate postpartum fetal and neonatal care, using data collected as a part of Malawi's Helping Babies Breath program evaluation. From August to September 2012, the Maternal and Child Health Integrated Program (MCHIP) conducted a cross-sectional survey in 84 Malawian health facilities to capture current health facility service availability and readiness and health worker capacity and practice pertaining to labor, delivery, and immediate postpartum care...
2017: PloS One
https://www.readbyqxmd.com/read/28298291/plasmablast-response-to-primary-rhesus-cytomegalovirus-infection-in-a-monkey-model-of-congenital-cmv-transmission
#20
Qihua Fan, Cody S Nelson, Kristy M Bialas, Flavia Chiuppesi, Joshua Amos, Thaddeus C Gurley, Dawn Jones Marshall, Joshua Eudailey, Holly Heimsath, Jonathon Himes, Ashlesha Deshpande, Mark R Walter, Felix Wussow, Don J Diamond, Peter A Barry, M Anthony Moody, Amitinder Kaur, Sallie R Permar
Human cytomegalovirus (HCMV) is the most common congenital infection worldwide, and the leading infectious cause of neurologic deficits and hearing loss in newborns. Development of a maternal HCMV vaccine to prevent vertical virus transmission is a high priority, yet protective maternal immune responses following acute infection are poorly understood. To characterize the maternal humoral immune response to primary CMV infection, we investigated the plasmablast and early antibody repertoire using a nonhuman primate model with two acutely rhesus CMV (RhCMV) infected animals - a CD4+ T cell-depleted dam that experienced fetal loss shortly after vertical RhCMV transmission and an immunocompetent dam that did not transmit RhCMV to her infant...
March 15, 2017: Clinical and Vaccine Immunology: CVI
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