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https://www.readbyqxmd.com/read/28533268/the-transcription-factor-gli3-promotes-b-cell-development-in-fetal-liver-through-repression-of-shh
#1
Anisha Solanki, Ching-In Lau, José Ignacio Saldaña, Susan Ross, Tessa Crompton
Before birth, B cells develop in the fetal liver (FL). In this study, we show that Gli3 activity in the FL stroma is required for B cell development. In the Gli3-deficient FL, B cell development was reduced at multiple stages, whereas the Sonic hedgehog (Hh [Shh])-deficient FL showed increased B cell development, and Gli3 functioned to repress Shh transcription. Use of a transgenic Hh-reporter mouse showed that Shh signals directly to developing B cells and that Hh pathway activation was increased in developing B cells from Gli3-deficient FLs...
May 22, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28532833/estimation-of-fetal-lung-development-using-quantitative-analysis-of-ultrasonographic-images-in-normal-canine-pregnancy
#2
T Banzato, G Zovi, C Milani
We investigated the quantitative analysis of sonographic images to predict fetal lung maturity of the canine foetus in normal pregnancy. Twelve bitches were recruited in the present study. Serial ultrasonographic exams were performed at three pre-determined time periods corresponding to the pseudoglandular (40-48 days of pregnancy), canalicular (49-56 days of pregnancy) and saccular phase (57-63 days of pregnancy) of lung development. Mean grey level (MGL) and the standard deviation of the histogram (SDH) of fetal lung and liver sonographic images were measured with dedicated software...
July 1, 2017: Theriogenology
https://www.readbyqxmd.com/read/28531808/prenatal-diagnosis-of-biliary-atresia-a-case-series
#3
O Shen, H Y Sela, H Nagar, R Rabinowitz, E Jacobovich, D Chen, E Granot
BACKGROUND: Biliary atresia is a progressive disease presenting with jaundice, and is the most common indication for liver transplantation in the pediatric population. Prenatal series have yielded conflicting results concerning a possible association between BA and prenatal nonvisualization of the gallbladder. AIMS: This retrospective case series was performed to assess the association between biliary atresia, prenatal nonvisualization of the gallbladder and other sonographic signs...
May 19, 2017: Early Human Development
https://www.readbyqxmd.com/read/28521326/the-yield-of-abdominal-ultrasound-in-the-evaluation-of-elevated-liver-enzymes-during-the-second-and-the-third-trimester-of-pregnancy
#4
Aya Mohr-Sasson, Eyal Schiff, Ramy Rahamim Suday, Zehava Hayman, Yeruham Kleinbaum, Anat Kalter-Farber, Roy Mashiach, Yoav Yinon, Moti Dulitzki, Eyal Sivan, Shali Mazaki-Tovi
AIMS: To determine the clinical yield of abdominal ultrasound in the evaluation of elevated liver enzymes (ELEs) in the second and the third trimester of pregnancy. METHODS: A retrospective cohort study including all pregnant women admitted to a single tertiary care center was conducted between April 2011 and January 2015 with ELE. Inclusion criteria included gestational age above 24 weeks and ELEs, abdominal ultrasound report, and live fetus. Exclusion criteria included known maternal liver disease, structural or chromosomal fetal anomalies, and positive serology for viral hepatitis...
May 19, 2017: Gynecologic and Obstetric Investigation
https://www.readbyqxmd.com/read/28505611/novel-insights-in-fetal-cardiomyopathy-due-to-in-utero-herpes-simplex-virus-infection
#5
Tamara Margit Jutta Pahlitzsch, Elisa Theresa Helbig, Nanette Sarioglu, Larry Hinkson, Katharina von Weizsäcker, Wolfgang Henrich
This is a case report of fatal cardiomyopathy in a fetus following maternal intrauterine infection with herpes simplex virus (HSV), despite the mother having no symptoms of an infection. The fetus showed signs of a disseminated infection affecting the heart, brain, lungs, liver, adrenal glands, and skin. HSV cardiomyopathy, characterized by vast necrosis, extensive calcifications, and inflammatory infiltration, was found to be the cause of intrauterine fetal death. To our knowledge, this is a unique report of an asymptomatic maternal nonprimary or recurrent HSV infection that induced a transmission of HSV resulting in extensive and fatal changes in the fetal heart...
May 16, 2017: Fetal Diagnosis and Therapy
https://www.readbyqxmd.com/read/28503326/incomplete-paraplegia-caused-by-extramedullary-hematopoiesis-in-a-patient-with-thalassemia-intermedia
#6
Nurhasyimah Hisamud-Din, Nadia Mohd Mustafah, Aishah Ahmad Fauzi, Natiara Mohamad Hashim
INTRODUCTION: Extramedullary hematopoiesis (EMH) is the production of blood cell precursors outside the bone marrow that occur in various hematological diseases. In patients with thalassemia intermedia, ineffective erythropoiesis drives compensatory EMH in the liver, pancreas, pleura, spleen, ribs and spine. CASE PRESENTATION: We describe a patient with thalassemia intermedia who presented with acute neurological symptoms caused by paraspinal EMH, which responded well to combination therapy of steroid, hypertransfusion, laminectomy and excision of pseudotumor and hydroxyurea therapy to boost the formation of fetal haemoglobin...
2017: Spinal Cord Series and Cases
https://www.readbyqxmd.com/read/28503116/melatonin-pharmacology-functions-and-therapeutic-benefits
#7
REVIEW
Sylvie Tordjman, Sylvie Chokron, Richard Delorme, Annaëlle Charrier, Eric Bellissant, Nemat Jaafari, Claire Fougerou
BACKGROUND: Melatonin synchronizes central but also peripheral oscillators (fetal adrenal gland, pancreas, liver, kidney, heart, lung, fat, gut, etc.), allowing temporal organization of biological functions through circadian rhythms (24-hour cycles) in relation to periodic environmental changes and therefore adaptation of the individual to his/her internal and external environment. Measures of melatonin are considered the best peripheral indices of human circadian timing based on an internal 24-hour clock...
April 2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/28502747/chicken-egg-fetal-liver-dna-and-histopathologic-effects-of-structurally-diverse-carcinogens-and-non-carcinogens
#8
M J Iatropoulos, T Kobets, J-D Duan, K D Brunnemann, E Vock, U Deschl, G M Williams
Chicken egg fetal livers were evaluated for histopathological changes produced by four genotoxic hepatocarcinogens: 2-acetylaminofluorene (AAF), aflatoxin B1 (AFB1), benzo[a]pyrene (BaP), diethylnitrosamine (DEN); four structurally related non- or weakly- carcinogenic comparators: fluorene (FLU), aflatoxin B2 (AFB2), benzo[e]pyrene (BeP), N-nitrosodiethanolamine (NDELA); two epigenetic hepatocarcinogens: clofibric acid (CFA), phenobarbital (PB); and the non-carcinogen, D-mannitol (MAN). CFA, PB and MAN were also assessed for formation of DNA adducts using the (32)P nucleotide postlabeling (NPL) assay and for DNA breaks using the comet assay...
May 11, 2017: Experimental and Toxicologic Pathology: Official Journal of the Gesellschaft Für Toxikologische Pathologie
https://www.readbyqxmd.com/read/28497946/nanopillar-surface-topology-promotes-cardiomyocyte-differentiation-through-cofilin-mediated-cytoskeleton-rearrangement
#9
Ha-Rim Seo, Hyung Joon Joo, Dae Hwan Kim, Long-Hui Cui, Seung-Cheol Choi, Jong-Ho Kim, Sung Woo Cho, Kyu Back Lee, Do-Sun Lim
Nanoscaled surface patterning is an emerging potential method of directing the fate of stem cells. We adopted nanoscaled pillar gradient patterned cell culture plates with three diameter gradients [280-360 (GP 280/360), 200-280 (GP 200/280), and 120-200 nm (GP 120/200)] and investigated their cell fate-modifying effect on multipotent fetal liver kinase 1-positive mesodermal precursor cells (Flk1(+) MPCs) derived from embryonic stem cells. We observed increased cell proliferation and colony formation of the Flk1(+) MPCs on the nanopattern plates...
May 12, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28497716/polyglucosan-bodies-in-placental-extravillious-trophoblast-for-the-diagnosis-of-fatal-perinatal-neuromuscular-type-glycogen-storage-disease-type-iv
#10
Weiming Yu, Marie-Anne Brundler, James R Wright
The fatal infantile neuromuscular type is the most severe form of glycogen storage disease type IV. We report a case of a 22-day-old female neonate born at 34 weeks gestation with polyhyramnios, fetal hydrops, and severe hypotonia. Placental examination revealed numerous periodic acid schiff (PAS)-positive diastase-resistant polyglucosan bodies in the cytoplasm of extravillous trophoblast predominantly in the placental basal plate. Muscle biopsy and autopsy findings supported a diagnosis of neuromuscular-type glycogen storage disease IV with extensive involvement of skeletal muscle, heart, and liver...
January 1, 2017: Pediatric and Developmental Pathology
https://www.readbyqxmd.com/read/28496040/induction-of-human-cytochrome-p450-3a-enzymes-in-cultured-placental-cells-by-thalidomide-and-relevance-to-bioactivation-and-toxicity
#11
Norie Murayama, Yasuhiro Kazuki, Daisuke Satoh, Kazuya Arata, Tasuku Harada, Norio Shibata, F Peter Guengerich, Hiroshi Yamazaki
Evidence has been presented for auto-induced human cytochrome P450 3A enzyme involvement in the teratogenicity and clinical outcome of thalidomide due to oxidation to 5-hydroxythalidomide and subsequent metabolic activation in livers. In this study, more relevant human placenta preparations and placental BeWo cells showed low but detectable P450 3A4/5 mRNA expression and drug oxidation activities. Human placental microsomal fractions from three subjects showed detectable midazolam 1´- and 4-hydroxylation and thalidomide 5-hydroxylation activities...
2017: Journal of Toxicological Sciences
https://www.readbyqxmd.com/read/28495915/extracellular-glycine-is-necessary-for-optimal-hemoglobinization-of-erythroid-cells
#12
Daniel Garcia-Santos, Matthias Schranzhofer, Richard Bergeron, Alex D Sheftel, Prem Ponka
Vertebrate heme synthesis requires three substrates: succinyl-CoA, which regenerates in the tricarboxylic acid cycle, iron and glycine. For each heme molecule synthesized, one atom of iron and eight molecules of glycine are needed. Inadequate delivery of iron to immature erythroid cells leads to a decreased production of heme, but virtually nothing is known about the consequence of an insufficient supply of extracellular glycine on the process of hemoglobinization. To address this issue, we exploited mice in which the gene encoding glycine transporter 1 (GlyT1) was disrupted...
May 11, 2017: Haematologica
https://www.readbyqxmd.com/read/28495194/neospora-caninum-abortion-in-a-malayan-tapir-tapirus-indicus
#13
M Peters, C Osmann, P Wohlsein, G Schares
A captive 17-year old female Malayan tapir (Tapirus indicus) aborted a fetus with a crown rump length of 19cm in early pregnancy. The fetus showed an early state of mummification. Histologically, a multifocal mononuclear encephalitis, myocarditis and periportal hepatitis was present indicating a possible protozoal cause of abortion. Although immunohistologically, Neospora (N.) caninum antigen could not be demonstrated, N. caninum DNA was detected by Polymerase Chain Reaction (PCR) in brain, heart, liver and lung of the fetus...
May 30, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28490449/enhanced-insulin-secretion-and-insulin-sensitivity-in-young-lambs-with-placental-insufficiency-induced-intrauterine-growth-restriction
#14
Leticia E Camacho, Xiaochuan Chen, William W Hay, Sean W Limesand
Intrauterine growth restriction (IUGR) is associated with persistent metabolic complications, but information is limited for IUGR infants. We determined glucose-stimulated insulin secretion (GSIS) and insulin sensitivity in young lambs with placental insufficiency-induced IUGR. Lambs with hyperthermia-induced IUGR (n=7) were compared to control lambs (n=8). GSIS was measured at 8±1 days of age, and at 15±1 days body weight-specific glucose utilization rates were measured with radiolabeled D-glucose during a hyperinsulinemic-euglycemic clamp (HEC)...
May 10, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28486373/medical-and-obstetric-complications-among-pregnant-women-with-liver-cirrhosis
#15
Anna Palatnik, Mary E Rinella
OBJECTIVE: To evaluate clinical characteristics and obstetric outcomes in pregnant women with liver cirrhosis. METHODS: This was a retrospective matched cohort study of women with liver cirrhosis between January 2005 and January 2016 in a university hospital. Women in a case group were matched to women in a control group according to year of delivery, age, body mass index, and parity in a 1:4 ratio. Bivariable and multivariable analyses were performed to compare the prevalence of the primary composite outcome, which included any one of the following: fetal or neonatal demise, placental abruption, preeclampsia, preterm delivery at less than 37 weeks of gestation, and small-for-gestational age neonate between women in the case group and those in the control group...
June 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28483066/the-highs-and-lows-of-fetal-programming-for-fatty-liver-disease
#16
EDITORIAL
Marialena Mouzaki, Simon C Ling
No abstract text is available yet for this article.
May 5, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28479304/understanding-hematopoietic-stem-cell-development-through-functional-correlation-of-their-proliferative-status-with-the-intra-aortic-cluster-architecture
#17
Antoniana Batsivari, Stanislav Rybtsov, Celine Souilhol, Anahi Binagui-Casas, David Hills, Suling Zhao, Paul Travers, Alexander Medvinsky
During development, hematopoietic stem cells (HSCs) emerge in the aorta-gonad-mesonephros (AGM) region through a process of multi-step maturation and expansion. While proliferation of adult HSCs is implicated in the balance between self-renewal and differentiation, very little is known about the proliferation status of nascent HSCs in the AGM region. Using Fucci reporter mice that enable in vivo visualization of cell-cycle status, we detect increased proliferation during pre-HSC expansion followed by a slowing down of cycling once cells start to acquire a definitive HSC state, similar to fetal liver HSCs...
May 3, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28476547/bisphenol-a-exposure-in-utero-programs-a-sexually-dimorphic-estrogenic-state-of-hepatic-metabolic-gene-expression
#18
Ysabel Ilagan, Ramanaiah Mamillapalli, Laura G Goetz, Jehanzeb Kayani, Hugh S Taylor
Bisphenol-A (BPA) exposure in utero affects fetal development and metabolism leading to obesity. However, the mechanisms are not well characterized. We identified sexually dimorphic developmental programming of genes regulating metabolism in the liver after BPA exposure. Pregnant mice were treated with BPA on days 9-18 of gestation. At six weeks, female offspring were ovariectomized; both sexes were subsequently treated with estradiol (E2). Fetal BPA exposure altered the expression of genes in liver, including those involved in glucose and lipid metabolism, and transporters, in both sexes...
May 2, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28469521/congenital-hepatic-cyst
#19
Aldo Recinos, Tarik Zahouani, Juan Guillen, Benamanahalli Rajegowda
Congenital hepatic cyst is a rare and nonsymptomatic condition in infants and children. Its incidence is 2.5% in the postnatal life with a much lower incidence in the prenatal period. Incidental finding on antenatal imaging is the most common presentation. We present a case of a newborn in whom fetal ultrasound detected a cyst within the fetal liver. Postnatal imaging revealed a liver cyst in the right lobe of the liver, with no other intrahepatic structure affected. Liver function tests were abnormal, but the patient was asymptomatic...
2017: Clinical Medicine Insights. Pediatrics
https://www.readbyqxmd.com/read/28467759/nucleated-red-blood-cells-as-a-marker-of-acute-and-chronic-fetal-hypoxia-in-a-rat-model
#20
Victoria K Minior, Brian Levine, Asaf Ferber, Seth Guller, Michael Y Divon
OBJECTIVE: To examine the relationship between duration of fetal hypoxia, nucleated red blood cell (NRBC) count, and fetal growth. METHODS: Pregnant rats were exposed to a severe hypoxia (9.5%-10% O2) for varying time intervals (2, 6, 12, 24, 48, and 120 hours; n=4 for each time interval) immediately prior to delivery at term. Normoxic controls were exposed to room air (21% O2) and matched for all other study variables (n=4 rats for each time interval). Pups were delivered via hysterotomy while maintaining exposure gas concentrations...
April 28, 2017: Rambam Maimonides Medical Journal
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