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https://www.readbyqxmd.com/read/28443480/adverse-placental-perfusion-and-pregnancy-outcomes-in-a-new-nonhuman-primate-model-of-gestational-protein-restriction
#1
Victoria H J Roberts, Jamie O Lo, Katherine S Lewandowski, Peter Blundell, Kevin L Grove, Christopher D Kroenke, Elinor L Sullivan, Charles T Roberts, Antonio E Frias
Maternal malnutrition during pregnancy impacts fetal growth, with developmental consequences that extend to later life outcomes. In underdeveloped countries, this malnutrition typically takes the form of poor dietary protein content and quality, even if adequate calories are consumed. Here, we report the establishment of a nonhuman primate model of gestational protein restriction (PR) in order to understand how placental function and pregnancy outcomes are affected by protein deficiency. Rhesus macaques were assigned to either a control diet containing 26% protein or switched to a 13% PR diet prior to conception and maintained on this PR diet throughout pregnancy...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28442046/morphometric-developmental-pattern-of-bovine-handmade-cloned-concepti-in-late-pregnancy
#2
R P C Gerger, F C Zago, E S Ribeiro, S Gaudencio Neto, L T Martins, L H Aguiar, V H V Rodrigues, F H Furlan, I Ortigari, R D Sainz, C L Ferrell, M A Miglino, C E Ambrósio, J L Rodrigues, R Rossetto, F Forell, L R Bertolini, M Bertolini
Cloning procedures often interfere with conceptus growth and life ex utero, in a set of symptoms known as abnormal offspring syndrome (AOS). The aim of the present study was to compare the developmental pattern of in vivo-derived (IVD), IVF-derived and handmade cloning-derived (NT-HMC) Day 225 bovine concepti using established procedures. Pregnancy diagnosis was performed on Day 30 following blastocyst transfer on Day 7. Conceptus morphometry was assessed by ultrasonography on Day 51, and on Day 225 pregnant cows were killed for morphological examination of concepti...
April 2017: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/28418597/mid-trimester-residual-cervical-length-and-the-risk-of-preterm-birth-in-pregnancies-after-abdominal-radical-trachelectomy-a-retrospective-analysis
#3
Yoshifumi Kasuga, Kei Miyakoshi, Hiroshi Nishio, Yohei Akiba, Toshimitsu Otani, Marie Fukutake, Satoru Ikenoue, Daigo Ochiai, Tadashi Matsumoto, Kyoko Tanaka, Kazuhiro Minegishi, Naoaki Kuji, Rachel Roberts, Daisuke Aoki, Mamoru Tanaka
OBJECTIVE: To investigate the association between the mid-trimester residual cervical length (CL) and the risk of preterm birth in pregnancies after abdominal radical trachelectomy (RT). DESIGN: Retrospective cohort study. SETTING: University Hospital. POPULATION: A total of 33 deliveries after 22 weeks' gestation in 30 women who underwent abdominal RT including prophylactic cervical cerclage and perinatal care between January 2002 and May 2016...
April 18, 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28399138/short-cervical-lengths-initially-detected-in-mid-trimester-and-early-in-the-third-trimester-in-asymptomatic-twin-gestations-association-with-histologic-chorioamnionitis-and-preterm-birth
#4
Jeong Woo Park, Kyo Hoon Park, Eun Young Jung, Soo-Hyun Cho, Ji Ae Jang, Ha-Na Yoo
OBJECTIVE: To determine whether short cervical lengths (≤20 mm) that were initially detected in mid-trimester and early in the third trimester are independently associated with increased risks of subsequent histologic chorioamnionitis and spontaneous preterm birth (SPTB, defined as a delivery before 34 weeks) in asymptomatic women with twin pregnancies. MATERIAL AND METHODS: This is a prospective study including 292 consecutive asymptomatic women with twin gestations...
2017: PloS One
https://www.readbyqxmd.com/read/28385051/the-mid-gestation-triple-test-profile-among-women-diagnosed-with-vasa-previa
#5
Yaakov Melcer, Reuven Sharony, Marina Pekar-Zlotin, Josef Tovbin, Noam Smorgick, Howard Cuckle, Ron Maymon
Purpose To assess the mid-trimester triple test biomarkers among women diagnosed with vasa previa. Methods The study included 43 singleton pregnancies diagnosed with vasa previa between the years 1988 to 2011. The mid-gestation screening test for Down syndrome was calculated from the combination of triple serum markers and maternal age, and expressed as a multiple of the gestation specific normal mean (MoM). Reference MoM values were calculated from the local population. The levels of mid-gestation maternal serum alpha-fetoprotein (AFP), human chorionic gonadotropin (hCG) and unconjugated estriol (uE3) of patients with VP were compared with control reference group...
April 6, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28378426/a-prospective-study-on-fetal-posterior-cranial-fossa-assessment-for-early-detection-of-open-spina-bifida-at-11-13-weeks
#6
Semir Kose, Sabahattin Altunyurt, Pembe Keskinoglu
To test three measurements; brain stem (BS), intracranial translucency (IT) and brain stem to occipital bone distance (BSOB), as well as one landmark; cisterna magna (CM) visibility, for early diagnosis of open spina bifida (OSB) in a low risk population. A prospective observational study was undertaken in a university hospital. A sample of 1479 women consented to participate between 20 September 2013 and 30 June 2015. Measurements were performed from the mid-sagittal view, as is routinely used for nuchal thickness assessment...
April 5, 2017: Congenital Anomalies
https://www.readbyqxmd.com/read/28370687/mid-trimester-sonographic-cervical-consistency-index-to-predict-spontaneous-preterm-birth-in-a-low-risk-population
#7
Núria Baños, Clara Murillo-Bravo, Carla Julià, Federico Migliorelli, Alvaro Perez-Moreno, Jose Ríos, Eduard Gratacos, Lil Valentin, Montse Palacio
OBJECTIVES: To estimate the ability of mid-trimester sonographic Cervical Consistency Index (CCI) to predict spontaneous preterm birth (sPTB) in low-risk pregnancies and to compare its performance with mid-trimester sonographic cervical length (CL). METHODS: This is a prospective cohort study including women with singleton pregnancies examined with ultrasound at 19 + 0 to 24 + 6 gestational weeks. All underwent transvaginal ultrasound examination of the cervix, but CCI and CL were measured off-line only in women without risk factors for sPTB...
March 31, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28366035/the-relationship-between-maternal-body-composition-in-early-pregnancy-and-foetal-mid-thigh-soft-tissue-thickness-in-the-third-trimester-in-a-high-risk-obstetric-population
#8
Breffini Anglim, Nadine Farah, Clare O'Connor, Niamh Daly, Mairead M Kennelly, Michael J Turner
Maternal obesity is an emerging challenge in contemporary obstetrics. To date there has been no study analysing the relationship between specific maternal body composition measurements and foetal soft-tissue measurements. The aim of this study was to determine whether measurement of maternal body composition at booking predicts foetal soft-tissue trajectories in the third trimester. We analysed the relationship between foetal thigh in the third trimester and both maternal BMI and body composition using the Tanita digital scales in the first trimester...
April 1, 2017: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28361594/an-unusual-hydrops-fetalis-associated-with-compound-heterozygosity-for-kr%C3%A3-ppel-like-factor-1-mutations
#9
Helena H L Lee, Annisa S L Mak, K O Kou, C F Poon, W S Wong, K H Chiu, Patrick K C Au, Kelvin Y K Chan, Anita S Y Kan, Mary H Y Tang, K Y Leung
Hydrops fetalis is commonly due to Hb Bart's (γ4) disease in South East Asia. Here, we report an unusual case of hydrops fetalis due to congenital dyserythropoietic anemia (CDA) associated with compound heterozygosity for Krüppel-like factor 1 (KLF1) gene mutations. Fetal cardiomegaly was first detected on routine mid-trimester scan in a pregnant woman with normal mean corpuscular volume (MCV) and Rhesus positive status. The fetus subsequently developed hydrops fetalis, and cordocentesis showed severe fetal anemia with a hemoglobin (Hb) level of 3...
November 2016: Hemoglobin
https://www.readbyqxmd.com/read/28343558/simulator-based-obstetric-ultrasound-training-a-prospective-randomized-single-blinded-study
#10
Hadar Rosen, Rory Windrim, Yee Man Lee, Lara Gotha, Vsevolod Perelman, Stefania Ronzoni
OBJECTIVE: To compare the use of simulator-based and patient-based obstetric ultrasound training. METHODS: This was a prospective, randomized, single-blinded trial. Eighteen consenting obstetric trainees with minimal previous ultrasound exposure were recruited. Enrolled patients were also fully consenting. Mid-trimester fetal brain anatomy in the standard planes (i.e., biparietal diameter and head circumference, cavum septum pellucidum, posterior fossa, and lateral ventricle) was chosen as a surrogate for all fetal anatomy ultrasound training...
March 2017: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
https://www.readbyqxmd.com/read/28341180/morphological-and-morphometrical-maturation-of-ventral-cochlear-nucleus-in-human-foetus
#11
Sabita Mishra, T S Roy, Shashi Wadhwa
Auditory impulses perceived by the hair cells of the organ of corti are relayed in the cochlear nucleus, the first relay station in the brainstem, by the cochlear nerve. The human foetus is well known to respond to sound during the last trimester of gestation. On the contrary, studies conducted in rat, cat and mouse have shown that these mammals have an immature auditory system at the time of birth. There are very few reports available regarding the morphological and functional maturation of the cochlear nucleus in human...
March 21, 2017: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/28333275/anti-m%C3%A3-llerian-hormone-inhibits-activation-and-growth-of-bovine-ovarian-follicles-in-vitro-and-is-localized-to-growing-follicles
#12
M Y Yang, R A Cushman, J E Fortune
STUDY QUESTION: Does anti-Müllerian hormone (AMH) inhibit activation (initiation of growth) of primordial follicles and attenuate the growth of primary follicles in cattle, an excellent animal model for human ovarian follicular development? SUMMARY ANSWER: AMH inhibited activation of bovine primordial follicles and attenuated the growth of activated follicles in vitro. WHAT IS KNOWN ALREADY: In mice null mutant for AMH, the pool of primordial follicles is depleted prematurely and AMH inhibits follicle activation in vitro...
March 17, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28323933/research-resource-transcriptional-dynamics-of-cultured-human-villous-cytotrophoblasts
#13
Joshua F Robinson, Mirhan Kapidzic, Matthew Gormley, Katherine Ona, Terrence Dent, Helia Seifikar, Emily G Hamilton, Susan J Fisher
During human pregnancy, cytotrophoblasts (CTBs) play key roles in uterine invasion, vascular remodeling, and anchoring of the feto-placental unit. Due to the challenges associated with studying human placentation in utero, cultured primary villous CTBs are used as a model of the differentiation pathway that leads to invasion of the uterine wall. In vitro, CTBs emulate in vivo cell behaviors, such as migration, aggregation and substrate penetration. While some of the molecular features related to these cell behaviors have been described, the underlying mechanisms, at a global level, remain undefined at mid-gestation...
March 8, 2017: Endocrinology
https://www.readbyqxmd.com/read/28323386/the-association-of-maternal-lymphatic-markers-and-critical-congenital-heart-defects-in-the-fetus-a-population-based-case-control-study
#14
Martina A Steurer, Mary E Norton, Rebecca J Baer, Gary M Shaw, Sheila Keating, Anita J Moon-Grady, Christina D Chambers, Laura L Jelliffe-Pawlowski
The objective ot this study was to investigate whether lymphatic markers measured in women during the second trimester are associated with critical congenital heart defects (CCHDs) in offspring. This is a retrospective cohort study of pregnant women who participated in the California Prenatal Screening Program. CCHD data in the offspring was captured by linking birth certificate data with hospital patient discharge records. Second trimester samples were assayed for vascular endothelial growth factor (VEGF), platelet derived growth factor (PDGF) AA/BB, and PDGF AB...
March 21, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28320233/does-cervical-cerclage-decrease-preterm-birth-in-twin-pregnancies-with-a-short-cervix
#15
Tracy M Adams, Timothy J Rafael, Nadia B Kunzier, Supriya Mishra, Rose Calixte, Anthony M Vintzileos
PURPOSE: To determine if use of cerclage in twin gestations with mid-trimester short cervix is associated with decreased preterm birth rate. STUDY DESIGN: This is a retrospective cohort of twin gestations identified with cervical length of ≤2.5 cm before 24 weeks of gestation through the perinatal ultrasound database of two institutions from 2008 to 2014. Patients with and without cerclage were compared for a primary outcome of preterm birth at <35 weeks...
April 10, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28295722/cerclage-for-short-cervix-on-ultrasound-in-singleton-gestations-without-prior-spontaneous-preterm-birth-a-systematic-review-and-meta-analysis-of-trials-using-individual-patient-level-data
#16
REVIEW
Vincenzo Berghella, Andrea Ciardulli, Orion A Rust, Meekai To, Katsufumi Otsuki, Sietske Althuisius, Kypros Nicolaides, Amanda Roman, Gabriele Saccone
OBJECTIVE: The aim of this systematic review and meta-analysis was to quantify the efficacy of cervical cerclage in preventing preterm birth (PTB) in asymptomatic singleton pregnancies with a mid-trimester short transvaginal ultrasound cervical length (TVU CL) and without prior spontaneous PTB. METHODS: Electronic databases were searched from inception of each database until February 2017. No language restrictions were applied. We included all randomized controlled trials (RCTs) of asymptomatic singleton pregnancies without prior spontaneous PTB screened with TVU CL, found to have a midtrimester short CL <25 mm, and then randomized to management with either cerclage (i...
March 10, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28285640/first-and-second-trimester-gestational-weight-gains-are-most-strongly-associated-with-cord-blood-levels-of-hormones-at-delivery-important-for-glycemic-control-and-somatic-growth
#17
Sheryl L Rifas-Shiman, Abby Fleisch, Marie-France Hivert, Christos Mantzoros, Matthew W Gillman, Emily Oken
BACKGROUND: Excessive gestational weight gain (GWG) during pregnancy is associated with adverse outcomes for mothers and offspring. Early, mid, and late pregnancy GWGs have different associations with fetal growth and later life adiposity, but associations with cord blood hormones, which might predict later health, are not well studied. METHODS: In 978 pregnant women from the pre-birth Project Viva cohort, we calculated trimester-specific GWG using clinically recorded prenatal weights...
April 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28278173/circulating-progenitor-and-angiogenic-cell-frequencies-are-abnormally-static-over-pregnancy-in-women-with-preconception-diabetes-a-pilot-study
#18
Patricia D A Lima, Zhilin Chen, Aysha Tayab, Malia S Q Murphy, Jessica Pudwell, Graeme N Smith, B Anne Croy
Type 1 and 2 diabetes decrease the frequencies and functional capacities of circulating angiogenic cells (CAC). Diabetes also elevates gestational complications. These observations may be interrelated. We undertook pilot studies to address the hypothesis that preconception diabetes deviates known gestational increases in CACs. Cross-sectional study of type 1 diabetic, type 2 diabetic and normoglycemic pregnant women was conducted at 1st, 2nd, and 3rd trimester and compared to a 6mo postpartum surrogate baseline...
2017: PloS One
https://www.readbyqxmd.com/read/28268197/microbial-invasion-of-the-amniotic-cavity-in-midtrimester-pregnancies-using-molecular-microbiology
#19
Shelley Rowlands, Jennifer A Danielewski, Sepehr N Tabrizi, Susan P Walker, Suzanne M Garland
OBJECTIVE: The objective of the study was to determine the frequency of microbial invasion of the amniotic cavity in the midtrimester of pregnancy in patients undergoing amniocentesis for clinical indications. STUDY DESIGN: This was a prospective investigation of the amniotic fluid of 344 asymptomatic women recruited in midpregnancy for the presence of microbial DNA. Amniotic samples obtained at the time of amniocentesis for genetic testing on women between 15 and 22 weeks of gestation were tested specifically for the presence of Ureaplasma urealyticum, Ureaplasma parvum, Mycoplasma hominis, and Mycoplasma genitalium as well as for other bacteria and fungi using broad-range polymerase chain reaction only...
March 6, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28268196/prenatal-ultrasound-diagnosis-and-outcome-of%C3%A2-placenta-previa-accreta-after-cesarean-delivery-a-systematic-review-and-meta-analysis
#20
REVIEW
Eric Jauniaux, Amar Bhide
BACKGROUND: Women with a history of previous cesarean delivery, presenting with a placenta previa, have become the largest group with the highest risk for placenta previa accreta. OBJECTIVE: The objective of the study was to evaluate the accuracy of ultrasound imaging in the prenatal diagnosis of placenta accreta and the impact of the depth of villous invasion on management in women presenting with placenta previa or low-lying placenta and with 1 or more prior cesarean deliveries...
March 6, 2017: American Journal of Obstetrics and Gynecology
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