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https://www.readbyqxmd.com/read/29143560/induced-pluripotent-stem-cells-derived-from-human-amnion-in-chemically-defined-conditions
#1
Jaroslav Slamecka, Steven McClellan, Anna Wilk, Javier Laurini, Elizabeth Manci, Simon P Hoerstrup, Benedikt Weber, Laurie Owen
Fetal stem cells are a unique type of adult stem cells that have been suggested to be broadly multipotent with some features of pluripotency. Their clinical potential has been documented but their upgrade to full pluripotency could open up a wide range of cell-based therapies particularly suited for pediatric tissue engineering, longitudinal studies or disease modeling. Here we describe episomal reprogramming of mesenchymal stem cells from the human amnion to pluripotency (AM-iPSC) in chemically defined conditions...
November 16, 2017: Cell Cycle
https://www.readbyqxmd.com/read/29140383/a-randomized-split-mouth-clinical-trial-on-effectiveness-of-amnion-chorion-membranes-in-alveolar-ridge-preservation-a-clinical-radiologic-and-morphometric-study
#2
Muyeenul Hassan, Sivaraman Prakasam, Carol Bain, Ahmed Ghoneima, Sean Shih-Yao Liu
PURPOSE: Recent case reports suggest that amnion-chorion membranes (ACM) and dense polytetrafluoroethylene membranes (dPTFE) can be left exposed during ridge preservation. The aim of this study was to compare the effectiveness of these membranes in ridge preservation, particularly when they are intentionally left exposed. MATERIALS AND METHODS: A split-mouth, single-blind, randomized trial design was used to compare treatments with the two membranes in 22 nonmolar sites on the same arch...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29135730/a-novel-secretome-biotherapeutic-influences-regeneration-in-critical-size-bone-defects
#3
Alexander J Burdette, Teja Guda, Michelle E Thompson, Richard Banas, Forest Sheppard
Severe traumatic injuries often result in critical size bone defects, which are unable to heal without treatment. Autologous grafting is the standard of care but requires additional surgeries for graft procurement. Amnion-derived multipotent progenitor cells release a secretome of biomolecules identified as integral to the process of bone regeneration and angiogenesis. This secretome is currently under development as a biotherapeutic. The efficacy of this secretome biotherapeutic was evaluated in vitro on the proliferation and migration of mesenchymal stem cells and osteoprogenitor cells as well as in vivo using a critical size rat calvarial defect model...
November 9, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29134685/in-ovo-feeding-of-nutrients-and-its-impact-on-post-hatching-water-and-feed-deprivation-up-to-48%C3%A2-hr-energy-status-and-jejunal-morphology-of-chicks-using-response-surface-models
#4
M Ghanaatparast-Rashti, M Mottaghitalab, H Ahmadi
A Box-Behnken design (BBD) in a response surface methodology (RSM) was used to investigate the response of broiler chicks to in ovo feeding (IOF) of beta-hydroxy beta-methylbutyrate (HMB), dextrin and the timing of the first water and feed deprivation. On day 18th of incubation, 1,500 eggs were randomly assigned to 15 experimental runs of BBD, each with 4 replicates, as 3 levels IOF of HMB (0%, 0.5% and 1%) and dextrin (0%, 20% and 40%), and 3 levels of the first water and feed deprivation (6, 27 and 48 hr)...
November 13, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/29133641/simultaneous-use-of-amniotic-membrane-and-mitomycin-c-in-trabeculectomy-for-primary-glaucoma
#5
Usha Yadava, Kirti Jaisingh, Sonal Dangda, Prolima Thacker, Kirti Singh, Yashpal Goel
PURPOSE: This study aimed to propose the role of amniotic membrane transplantation (AMT) as an additional modulator in primary Mitomycin C (MMC)-augmented trabeculectomy. METHODS: This was a randomized prospective interventional study. Forty eyes of 39 adult patients with uncontrolled primary glaucoma were randomly divided into two equal groups. Control group underwent trabeculectomy augmented with MMC while the study group underwent additional AMT. Patients were followed up for 12 months and outcomes measured were intraocular pressure (IOP), need for additional intervention, and bleb morphology...
November 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29132325/level-causes-and-risk-factors-of-stillbirth-a-population-based-case-control-study-from-chandigarh-india
#6
Ariarathinam Newtonraj, Manmeet Kaur, Madhu Gupta, Rajesh Kumar
BACKGROUND: Globally, India ranks first in the absolute number of stillbirths. Hence, the level, causes, and risk factors of stillbirths were estimated to facilitate designing of prevention strategy. METHODS: Capture and recapture method was used to identify 301 stillbirths from 1st July 2013 to 31st August 2014 in Chandigarh Union Territory of India. Verbal autopsies (n = 181) were done at household level to identify causes of stillbirths. Risk factors were determined using case-control approach...
November 13, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/29131889/poisson-contraction-and-fiber-kinematics-in-tissue-insight-from-collagen-network-simulations
#7
Catalin Picu, Sai Deogekar, Mohammad Islam
Connective tissue mechanics is highly non-linear, exhibits a strong Poisson effect and is associated with significant collagen fiber re-arrangement. Although the general features of the stress-strain behavior in tension and compression and under uniaxial, biaxial and shear loading have been discussed extensively, especially from the macroscopic perspective, the Poisson effect and the kinematics of filaments have received less attention. In general, the relationship between the microscopic fiber network mechanics and the macroscopic experimental observations remains poorly defined...
November 13, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/29126435/human-amnion-cells-reverse-acute-and-chronic-pulmonary-damage-in-experimental-neonatal-lung-injury
#8
Dandan Zhu, Jean Tan, Amina S Maleken, Ruth Muljadi, Siow T Chan, Sin N Lau, Kirstin Elgass, Bryan Leaw, Joanne Mockler, Daniel Chambers, Kristen T Leeman, Carla F Kim, Euan M Wallace, Rebecca Lim
BACKGROUND: Despite advances in neonatal care, bronchopulmonary dysplasia (BPD) remains a significant contributor to infant mortality and morbidity. While human amnion epithelial cells (hAECs) have shown promise in small and large animal models of BPD, there is scarce information on long-term benefit and clinically relevant questions surrounding administration strategy remain unanswered. In assessing the therapeutic potential of hAECs, we investigated the impact of cell dosage, administration routes and timing of treatment in a pre-clinical model of BPD...
November 10, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29115085/prediction-of-amnionicity-using-the-number-of-yolk-sacs-in-monochorionic-multifetal-pregnancy
#9
Sue Yeon Park, Jin Hoon Chung, You Jung Han, Si Won Lee, Moon Young Kim
The purpose of this article was to evaluate the accuracy of predicting amnionicity using the number of yolk sacs by diagnostic ultrasound examination in monochorionic (MC) multifetal pregnancies between 7 + 0 and 9 + 6 gestational weeks. A total of 97 patients with MC multifetal pregnancies underwent early ultrasound examination from 2004 to 2014 at Cheil General Hospital and Women's Healthcare Center. All patients for whom the number of yolk sacs was reported were included in this study. We compared the number of yolk sacs with amnionicity confirmed by an intertwine membrane...
December 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/29114223/the-human-amnion-epithelial-cell-secretome-decreases-hepatic-fibrosis-in-mice-with-chronic-liver-fibrosis
#10
Majid Alhomrani, Jeanne Correia, Marcus Zavou, Bryan Leaw, Nathan Kuk, Rong Xu, Mohamed I Saad, Alexander Hodge, David W Greening, Rebecca Lim, William Sievert
Background: Hepatic stellate cells (HSCs) are the primary collagen-secreting cells in the liver. While HSCs are the major cell type involved in the pathogenesis of liver fibrosis, hepatic macrophages also play an important role in mediating fibrogenesis and fibrosis resolution. Previously, we observed a reduction in HSC activation, proliferation, and collagen synthesis following exposure to human amnion epithelial cells (hAEC) and hAEC-conditioned media (hAEC-CM). This suggested that specific factors secreted by hAEC might be effective in ameliorating liver fibrosis...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29108050/the-effects-of-maternal-nutrition-on-the-messenger-ribonucleic-acid-expression-of-neutral-and-acidic-amino-acid-transporters-in-bovine-uteroplacental-tissues-from-day-sixteen-to-fifty-of-gestation
#11
N P Greseth, M S Crouse, K J McLean, M R Crosswhite, N Negrin Pereira, C R Dahlen, P P Borowicz, L P Reynolds, A K Ward, B W Neville, J S Caton
We hypothesized that both day of gestation and maternal nutrition would alter the relative mRNA expression of neutral and acid AA transporters , , , , and . Crossbred Angus heifers ( = 49) were synchronized, bred via AI, assigned to nutritional treatment (100% of NRC requirements for 0.45 kg/d gain [control heifers {CON}] and 60% of CON [restricted heifers {RES}]), and ovariohysterectomized on d 16, 34, or 50 of gestation ( = 6 to 9/d). Nonbred, nonpregnant (NB-NP) controls were ovariohysterectomized on d 16 of the estrous cycle ( = 6) after synchronization...
October 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/29101986/acr-appropriateness-criteria-%C3%A2-multiple-gestations
#12
Phyllis Glanc, David A Nyberg, Nadia J Khati, Sandeep Prakash Deshmukh, Kika M Dudiak, Tara Lynn Henrichsen, Liina Poder, Thomas D Shipp, Lynn Simpson, Therese M Weber, Carolyn M Zelop
Women with twin or higher-order pregnancies will typically have more ultrasound examinations than women with a singleton pregnancy. Most women will have at minimum a first trimester scan, a nuchal translucency evaluation scan, fetal anatomy scan at 18 to 22 weeks, and one or more scans in the third trimester to evaluate growth. Multiple gestations are at higher risk for preterm delivery, congenital anomalies, fetal growth restriction, placenta previa, vasa previa, and velamentous cord insertion. Chorionicity and amnionicity should be determined as early as possible when a twin pregnancy is identified to permit triage of the monochorionic group into a closer surveillance model...
November 2017: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/29085840/differentiation-of-human-amniotic-mesenchymal-stem-cells-into-human-anterior-cruciate-ligament-fibroblast-cells-by-in-vitro-coculture
#13
Yuwan Li, Ziming Liu, Ying Jin, Xizhong Zhu, Shengmin Wang, Jibin Yang, Youliang Ren, Qiang Fu, Huazhang Xiong, Gang Zou, Yi Liu
Anterior cruciate ligament injuries are common in humans, though cellular components of the knee have little regenerative or proliferation potential. This study investigated the differentiation of human amnion-derived mesenchymal stem cells (hAMSCs) into human anterior cruciate ligament fibroblasts (hACLFs) in vitro through induction with bFGF and TGF-β1 with coculture systems. Groups A and B comprised hAMSCs at the 3rd passage cultured with and without bFGF and TGF-β1, respectively; Groups C and D consisted of hAMSCs and hACLFs in monolayer coculture with and without bFGF and TGF-β1, respectively; Groups E and F were composed of hAMSCs and hACLFs in Transwell coculture with and without bFGF and TGF-β1, respectively...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29077950/effects-of-in-ovo-feeding-of-cationic-amino-acids-on-hatchability-hatch-weights-and-organ-developments-in-domestic-pigeon-squabs-columba-livia
#14
X Y Zhang, L L Li, L P Miao, N N Zhang, X T Zou
This study was conducted to evaluate the effect of in ovo feeding of cationic amino acids on hatchability, hatch weights, and organ developments in pigeon squabs. Two experiments were conducted in this study. Eggs in Exp. 1 were subjected to modification of in ovo feeding in pigeons. Optimal time was determined by checking amniotic fluid volume, and suitable length was confirmed through ink injection. Results showed that the optimum time of in ovo feeding was on d 13 of embryonic development, and the suitable injected length was 20 mm to reach the amniotic cavity of the embryo...
October 25, 2017: Poultry Science
https://www.readbyqxmd.com/read/29076197/gestational-tissue-inflammatory-biomarkers-at-term-labor-a%C3%A2-systematic-review-of-literature
#15
REVIEW
Emily E Hadley, Lauren S Richardson, Maria R Torloni, Ramkumar Menon
Parturition at term is characterized by inflammatory overload in both feto-maternal tissues. Despite the large number of individual studies on changes in inflammatory biomarkers linked to labor, a comprehensive profile of them in each of the uterine compartments is not available to better understand their mechanistic contributions to labor. This systematic review investigated the pro- and anti-inflammatory biomarkers reported in intra-uterine tissues (amnion, chorion, decidua, placenta, and myometrium) at term labor...
October 27, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/29051303/transport-associated-pathway-responses-in-ovine-fetal-membranes-to-changes-in-amniotic-fluid-dynamics
#16
Cecilia Y Cheung, Debra F Anderson, Robert A Brace
Current evidence suggests that amniotic fluid volume (AFV) is actively regulated by vesicular transport of amniotic fluid outward across the amnion and into the underlying fetal vasculature in the placenta. Our objective was to determine whether gene expression profiles of potential stimulators, inhibitors, and mediators of vesicular transport are altered in response to changes in intramembranous absorption (IMA) rate. Samples of ovine amnion and chorion were obtained from fetal sheep with normal, experimentally reduced or increased AFVs and IMA rates...
November 2017: Physiological Reports
https://www.readbyqxmd.com/read/29050407/layer-chicken-embryo-survival-to-hatch-when-administered-an-in-ovo-vaccination-of-strain-f-mycoplasma-gallisepticum-and-locations-of-bacteria-prevalence-in-the-newly-hatched-chick
#17
K E C Elliott, S L Branton, J D Evans, P D Gerard, E D Peebles
Mycoplasma gallisepticum (MG) is a bacterial pathogen that causes production losses in layer chickens. To combat MG, multiage layer facilities vaccinate pullets by either spray or eye-drop vaccination. The objective in this study was to evaluate the use of in ovo vaccination as a potential alternative for MG vaccination. Layer embryos at 18 d of incubation were either not-injected (control), or were hand-injected with either commercial Marek's disease vaccine diluent alone or with a high, medium, low, or very low dosage of a live attenuated strain F (FMG) vaccine suspended in the commercial diluent...
September 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/29044425/smad7-regulates-proinflammatory-and-prolabor-mediators-in-amnion-and-myometrium
#18
Ratana Lim, Gillian Barker, Martha Lappas
Preterm birth continues to be a significant public health problem. Infection (bacterial and or viral) and inflammation, by stimulating proinflammatory cytokines, adhesion molecules, and matrix metalloproteinase 9 (MMP9), play a central role in the rupture of membranes and myometrial contractions. SMAD7 has been implicated in regulating the inflammatory response; however, no studies have been performed with regard to human labor. In this study, we determined the effect of spontaneous human labor and prolabor mediators on SMAD7 expression in myometrium and fetal membranes...
August 1, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/29030612/healing-of-preterm-ruptured-fetal-membranes
#19
Haruta Mogami, Annavarapu Hari Kishore, Yucel Akgul, R Ann Word
Preterm premature rupture of membrane (pPROM) is associated with 30-40% of preterm births. Infection is considered a leading cause of pPROM due to increased levels of proinflammatory cytokines in amniotic fluid. Only 30%, however, are positive for microbial organisms by amniotic fluid culture. Interestingly, in some pregnancies complicated by preterm premature rupture of membranes (pPROM), membranes heal spontaneously and pregnancy continues until term. Here, we investigated mechanisms of amnion healing. Using a preclinical mouse model, we found that small ruptures of the fetal membrane closed within 72 h whereas healing of large ruptures was only 40%...
October 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29024419/a-multicentre-randomised-controlled-trial-evaluating-the-efficacy-of-dehydrated-human-amnion-chorion-membrane-epifix%C3%A2-allograft-for-the-treatment-of-venous-leg-ulcers
#20
Christian Bianchi, Shawn Cazzell, Dean Vayser, Alexander M Reyzelman, Hasan Dosluoglu, Gregory Tovmassian
A randomised, controlled, multicentre clinical trial was conducted to evaluate the efficacy of dehydrated human amnion/chorion membrane (EpiFix) allograft as an adjunct to multilayer compression therapy for the treatment of non-healing full-thickness venous leg ulcers. We randomly assigned 109 subjects to receive EpiFix and multilayer compression (n = 52) or dressings and multilayer compression therapy alone (n = 57). Patients were recruited from 15 centres around the USA and were followed up for 16 weeks...
October 11, 2017: International Wound Journal
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