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Placenta extract

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https://www.readbyqxmd.com/read/28937410/cerebral-oxygenation-of-premature-lambs-supported-by-an-artificial-placenta
#1
Ahmed M El-Sabbagh, Brian W Gray, Andrew W Shaffer, Benjamin S Bryner, Joseph T Church, Jennifer S McLeod, Sara Zakem, Elena M Perkins, Renée A Shellhaas, John D E Barks, Alvaro Rojas-Peña, Robert H Bartlett, George B Mychaliska
An artificial placenta (AP) using venovenous extracorporeal life support (VV-ECLS) could represent a paradigm shift in the treatment of extremely premature infants. However, AP support could potentially alter cerebral oxygen delivery. We assessed cerebral perfusion in fetal lambs on AP support using near-infrared spectroscopy (NIRS) and carotid arterial flow (CAF). Fourteen premature lambs at EGA 130 days (term = 145) underwent cannulation of the right jugular vein and umbilical vein with initiation of VV-ECLS...
September 20, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/28928868/villi-specific-gene-expression-reveals-novel-prognostic-biomarkers-in-multiple-human-cancers
#2
Botao Zhang, Lin Feng, Honglin Guo, Hongxia Li, Yuanjing Wang, Kaitai Zhang, Xuexin Yu, Shujun Cheng
Despite many striking connections, the biological similarities between embryonic development and tumorigenesis have not been well explored. Development of the placental villi is a crucial process involving many cellular activities, including immunity, proliferation, and cell adhesion. In this study, we designed a strategy to identify the gene expression pattern of villi development and to explore the corresponding features in tumors. We discovered villi-specific genes that are highly expressed in the villus as opposed to the mature placenta and then measured the expression levels of these genes in tumors...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28926727/early-pregnancy-intrauterine-fetal-exposure-to-maternal-smoking-and-impact-on-fetal-telomere-length
#3
Hooman Mirzakhani, Immaculata De Vivo, J Steven Leeder, Roger Gaedigk, Carrie A Vyhlidal, Scott T Weiss, Kelan Tantisira
BACKGROUND: Reduced telomere length, or its accelerated attrition, has been implicated in aging, mortality, and several human diseases, including respiratory diseases. Age dependent manifestation of telomere-mediated disease during life span indicates the role of developmental stage in these diseases and highlights the importance of fetal developmental process in utero and at earlier life stages. Environmental determinants during developmental and later stages of life could affect telomere length...
September 14, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28912068/angiogenic-imbalance-and-diminished-matrix-metalloproteinase-2-and-9-underlie-regional-decreases-in-uteroplacental-vascularization-and-feto-placental-growth-in-hypertensive-pregnancy
#4
Carlos A Dias-Junior, Juanjuan Chen, Ning Cui, Charles L Chiang, Minglin Zhu, Zongli Ren, Jose S Possomato-Vieira, Raouf A Khalil
Preeclampsia is a form of hypertension-in-pregnancy (HTN-Preg) with unclear mechanism. Generalized reduction of uterine perfusion pressure (RUPP) could be an initiating event leading to uteroplacental ischemia, angiogenic imbalance, and HTN-Preg. Additional regional differences in uteroplacental blood flow could further affect the pregnancy outcome and increase the risk of preeclampsia in twin or multiple pregnancy, but the mechanisms involved are unclear. To test the hypothesis that regional differences in angiogenic balance and matrix metalloproteinases (MMPs) underlie regional uteroplacental vascularization and feto-placental development, we compared fetal and placental growth, and placental and myoendometrial vascularization in the proximal, middle and distal regions of the uterus (in relation to the iliac bifurcation) in normal pregnant (Preg) and RUPP rats...
September 11, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28912064/cell-cycle-and-histone-modification-genes-were-decreased-in-placenta-tissue-from-unexplained-early-miscarriage
#5
Yuanchang Zhu, Bing Li, Tonghua Wu, Lijun Ye, Yong Zeng, Yaou Zhang
Genetic defect is a major cause of early miscarriage, but still in many cases the etiology are not fully understood. Recent studies have shown that dysregulation of genes in placenta tissue are participated in the pathogenesis of unexplained early miscarriage. The aim of our study is to explore mRNA expression profile in placental chorionic villi and to reveal the underlying mechanism of unexplained early miscarriage. Chorionic villous were isolated and extracted from early miscarriage (n=3) and control pregnancy (n=3) placenta with normal chromosome karyotype using MLPA assay, and then mRNA expression profiles were determined by microarray...
September 11, 2017: Gene
https://www.readbyqxmd.com/read/28867635/effect-of-human-placental-extract-in-the-management-of-biofilm-mediated-drug-resistance-a-focus-on-wound-management
#6
Sutapa Goswami, Ratul Sarkar, Pritam Saha, Amit Maity, Tridib Sarkar, Debmalya Das, Piyali Datta Chakraborty, Subhasri Bandyopadhyay, Chandan Kumar Ghosh, Sanmoy Karmakar, Tuhinadri Sen
Management of infectious wounds, particularly chronic wounds and burn injuries, is a matter of global concern. Worldwide estimates reveal that, billions of dollars are being spent annually for the management of such chronic ailments. Evidently, bacterial biofilms pose a greater problem in the effective management of infection in chronic wounds, since most of the currently available antibiotics are unable to act on the microorganisms residing inside the protected environment of the biofilms. Accordingly, in the present study, we have attempted to evaluate the anti-biofilm properties of human placental extract (PLX) and also other virulence factors that are mediated via the quorum sensing (QS) signalling system...
September 1, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28865850/validation-of-genomic-predictions-for-wellness-traits-in-us-holstein-cows
#7
Anthony K McNeel, Brenda C Reiter, Dan Weigel, Jason Osterstock, Fernando A Di Croce
The objective of this study was to evaluate the efficacy of wellness trait genetic predictions in commercial herds of US Holstein cows from herds that do not contribute phenotypic information to the evaluation. Tissue samples for DNA extraction were collected from more than 3,400 randomly selected pregnant Holstein females in 11 herds and 2 age groups (69% nulliparous, 31% primiparous) approximately 30 to 60 d before their expected calving date. Lactation records from cows that calved between September 1, 2015, and December 31, 2015, were included in the analysis...
August 30, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28864007/expression-pattern-and-phosphorylation-status-of-smad2-3-in-different-subtypes-of-human-first-trimester-trophoblast
#8
S Haider, V Kunihs, C Fiala, J Pollheimer, M Knöfler
INTRODUCTION: TGF-β superfamily members are thought to play a pivotal role in placental development and differentiation. However, their downstream effectors, the Smad transcription factors, have been poorly investigated in human trophoblasts. METHODS: Expression and localisation of the canonical TGF-β targets Smad2/3 and their regulators (Smad4 and Smad7) were investigated in first trimester placenta and purified cytotrophoblast (CTB) subtypes using immunofluorescence, western blotting and qPCR...
September 2017: Placenta
https://www.readbyqxmd.com/read/28833496/expression-of-nestin-in-embryonic-tissues-and-its-effects-on-clinicopathological-characteristics-of-patients-with-placenta-previa
#9
Yan-Yan Qiao, Ping Chu
In this study, we examined expression of nestin in the spinal cord, lung, kidney, stomach, colon and intestine tissues at different stages of embryos in patients with placenta previa. Fetuses of 75 patients with placenta previa were assigned to case group and 80 fetuses from healthy pregnant women with normal placenta who voluntarily terminated pregnancy to control group. Clinical data of pregnant women were collected at the time of admission. Blood from elbow vein was collected to determine expression of serum nestin...
August 18, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28817493/dna-methylation-of-the-glucocorticoid-receptor-gene-promoter-in-the-placenta-is-associated-with-blood-pressure-regulation-in-human-pregnancy
#10
Sulistyo E Dwi Putra, Christoph Reichetzeder, Martin Meixner, Karsten Liere, Torsten Slowinski, Berthold Hocher
BACKGROUND: Blood pressure (BP) regulation during pregnancy is influenced by hormones of placental origin. It was shown that the glucocorticoid system is altered in hypertensive pregnancy disorders such as preeclampsia. Epigenetic mechanism might influence the activity of genes involved in placental hormone/hormone receptor synthesis/action during pregnancy. METHOD: In the current study, we analyzed the association of 5'-C-phosphate-G-3' (CpG) site methylation of different glucocorticoid receptor gene (NR3C1) promoter regions with BP during pregnancy...
August 16, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28812469/placental-pathologic-associations-with-morbidly-adherent-placenta-potential-insights-into-pathogenesis
#11
Linda M Ernst, Rebecca L Linn, Lucy Minturn, Emily S Miller
Background The pathology that underlies morbidly adherent placenta (MAP) is poorly understood. The objective of this study was to describe the placental pathology, especially implantation site pathology, associated with MAP. Methods This was a single institution, retrospective case-control study design examining placentas of patients who delivered between January 2008 and September 2013. MAP cases were defined by the need for clinical intervention at delivery beyond spontaneous placental delivery or simple manual extraction of the placenta...
September 2017: Pediatric and Developmental Pathology
https://www.readbyqxmd.com/read/28811141/the-pharmacokinetic-profile-of-synthetic-cathinones-in-a-pregnancy-model
#12
Lauren G Strange, Kerri Kochelek, Robert Keasling, Stacy D Brown, Brooks B Pond
In recent years, the abuse of synthetic cathinones or 'bath salts' has become a major public health concern. Although these compounds were initially sold legally and labeled "not for human consumption", the 'bath salts' are psychostimulants, with similar structures and pharmacologic mechanisms to cocaine, the amphetamines, and 3,4 methylendioxymethamphetamine (MDMA, Molly, or Ecstasy). The reported use of these substances by women of child-bearing age highlights the necessity of studies seeking to delineate risks of prenatal exposure...
August 12, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/28728340/screening-of-differential-proteins-of-placenta-tissues-in-patients-with-pre-eclampsia-by-itraq-proteomics-techniques
#13
Wei-Hong Qi, Ming-Yan Zheng, Chao Li, Lin Xu, Jin-E Xu
BACKGROUND: Isotopically labeled relative and absolute quantification (iTRAQ) were applied together with liquid chromatogram-tandem mass spectrometry (LC-MS/MS) technique to screen and differentiate normal tissues and differential proteins of placenta tissue in the pre-eclampsia group, and to seek for a pre-eclampsia biomarker. METHODS: Thirty patients with severe pre-eclampsia (pre-eclampsia group) and 30 patients with normal full-term pregnancy (control group), who were admitted by the Obstetrical Department of The Affiliated Hospital of Qingdao University from December 2014 to June 2015, were collected for this study...
October 2017: Minerva Medica
https://www.readbyqxmd.com/read/28716206/contextual-herd-factors-associated-with-cow-culling-risk-in-qu%C3%A3-bec-dairy-herds-a-multilevel-analysis
#14
Denis Haine, Hector Delgado, Roger Cue, Asheber Sewalem, Kevin Wade, René Lacroix, Daniel Lefebvre, Julie Arsenault, Émile Bouchard, Jocelyn Dubuc
Several health disorders, such as milk fever, displaced abomasum, and mastitis, as well as impaired reproductive performance, are known risk factors for the removal of affected cows from a dairy herd. While cow-level risk factors are well documented in the literature, herd-level associations have been less frequently investigated. The objective of this study was to investigate the effect of cow- and herd-level determinants on variations in culling risk in Québec dairy herds: whether herd influences a cow's culling risk...
September 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28710994/toxic-compounds-from-tobacco-in-placenta-samples-analyzed-by-uplc-qtof-ms
#15
Somayeh Mohammadi, Celia Domeno, Isabel Nerin, Margarita Aznar, Pilar Samper, Gholamreza Khayatian, Cristina Nerin
Polycyclic aromatic hydrocarbons (PAHs), tobacco-specific nitrosamines (TSNAs) and aromatic amines are carcinogens present in cigarette smoke. These compounds are distributed in the human body and they could be transferred to the foetus during the pregnancy. Placenta is the main barrier to these toxic compounds and its study is the objective of this work. A method based on solid-phase extraction (SPE) with ultra-performance liquid chromatography-tandem quadrupole-time-of-flight mass spectrometry (UPLC-QTOF-MS) has been examined and optimized for the analysis of 9 target analytes (4 tobacco-specific nitrosamines and some of their metabolites, 3 aromatic amines, nicotine and cotinine) in 26 placenta samples from smoking and non-smoking women...
October 25, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28704719/biochemical-and-functional-analysis-of-corticotropin-releasing-factor-purified-from-an-aqueous-extract-of-human-placenta-used-as-wound-healer
#16
Namrata Singh, Debasish Bhattacharyya
Human placental extract constitutes of innumerable therapeutically important components mostly used in wound healing arising from the skin and burn injuries. However, there is still some bioactive present in the placental extracts yet to be characterized to better under the complex process of wound healing mediated by the placental extract. In this study, the presence of corticotropin releasing factor (CRF) in an aqueous extract of human placenta was detected and quantified by dot blot and CRF-ELISA immunoassay kit respectively...
October 25, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28682294/proteomic-comparison-of-amnion-and-chorion-and-evaluation-of-the-effects-of-processing-on-placental-membranes
#17
John P McQuilling, Jeremy B Vines, Kelly A Kimmerling, Katie C Mowry
OBJECTIVE: The purpose of this study is to compare the growth factor and cytokine content found within the amnion and chorion layers and to determine the effects of dehydration on them. MATERIALS AND METHODS: Placentas were collected from 5 to 6 consented donors following elective cesarean section, and 1-cm2 sections of either amnion or chorion were immediately stored at -80°C or dehydrated prior to -80°C storage until proteomic analysis. Signaling molecules from tissue samples were evaluated using quantitative multiplex proteomics microarrays, and data were analyzed based on a per cm2 basis and also on pg/mg of extracted protein for potency...
June 2017: Wounds: a Compendium of Clinical Research and Practice
https://www.readbyqxmd.com/read/28655072/oral-administration-of-glycine-and-leucine-dipeptides-improves-skin-hydration-and-elasticity-in-uvb-irradiated-hairless-mice
#18
Jong Il Park, Ji Eun Lee, Hyun Jun Shin, Soonran Song, Won Kyung Lee, Jae Sung Hwang
Placenta is a special organ that contains many nutrients such as growth factors, minerals, and bioactive peptides. Dipeptides of glycine and leucine are major components of porcine placenta extracts (PPE) that has been used as an alternative of human placenta extracts. In this study, we investigated whether major peptides of PPE, Glycyl-L-Leucine (Gly-Leu), L-Leucyl-Glycine (Leu-Gly), and L-Leucyl-L-Leucine (Leu-Leu), affect skin hydration and elasticity in vitro and in vivo. We found that Gly-Leu and Leu-Gly dipeptides induced the expression of transglutaminase 1 in normal human epidermal keratinocytes (NHEKs) whereas Leu-Leu dipeptides did not...
September 1, 2017: Biomolecules & Therapeutics
https://www.readbyqxmd.com/read/28622381/cell-free-dna-release-by-mouse-placental-explants
#19
Mark Phillippe, Sharareh Adeli
Although suggested that "fetal" cell-free DNA (cfDNA) is derived from trophoblast cells, the exact origin is unclear. The studies in this report sought to demonstrate that placental tissue releases cfDNA in parallel with cell death, that the size range of cfDNA is similar to that found in maternal plasma, and that the cfDNA fragments are able to stimulate a proinflammatory cytokine response. Placentas were harvested from near term pregnant CD-1 mice and cultured in DMEM/Ham's F12/FBS media in 8% or 21% O2. After centrifugation to remove cells and cellular debris, the cfDNA was extracted from the media and quantified by DNA spectrophotometry...
2017: PloS One
https://www.readbyqxmd.com/read/28617377/-pharmacological-treatment-of-patients-with-chronic-fatigue-syndrome
#20
O S Glazachev, Е N Dudnik, E E Zagaynaya
AIM: To evaluate the efficacy and safety of human placenta extract - laennec infusions in the treatment of patients with confirmed diagnosis of 'Chronic fatigue syndrome' (CFS). MATERIAL AND METHODS: The study included 38 patients with CFS, randomized into 2 groups: patients of the experimental group (EG, n=24) were treated with 10 intravenous laennec infusions, 4 ml each, 2 times/week, for 5 weeks. The control group (CG) consisted of 14 patients. Treatment efficacy evaluated by the severity of chronic fatigue ('The degree of chronic fatigue' questionnaire), state anxiety, depression and anger (Spilberger test) and quality of life (SF-36v2), exercise tolerance (cardiopulmonary exercise test with gas analysis), blood parameters were assessed before, after, and 5 weeks of follow-up...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
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