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https://www.readbyqxmd.com/read/28196167/volumetric-assessment-of-regenerative-efficacy-of-demineralized-freeze-dried-bone-allograft-with-or-without-amnion-membrane-in-grade-ii-furcation-defects-a-cone-beam-computed-tomography-study
#1
Natasha G Pajnigara, Abhay P Kolte, Rajashri A Kolte, Nilufer G Pajnigara
Volumetric changes were evaluated to assess the regenerative efficacy of demineralized freeze-dried bone allograft (DFDBA) with and without amnion membrane (AM) in Grade II furcation defects both clinically and radiographically using cone beam computed tomography (CBCT). Sites were randomly assigned to Group I (DFDBA) and Group II (DFDBA + AM). Clinical parameters such as probing pocket depth, clinical attachment level, gingival recession, and horizontal probing depth were assessed at baseline, 3 months, and 6 months...
March 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28188254/differential-effects-of-oxytocin-receptor-antagonists-atosiban-and-nolasiban-on-ot-mediated-signalling-in-human-amnion-and-myometrium
#2
Sung Hye Kim, Oliver Pohl, Andre Chollet, Jean-Pierre Gotteland, Adam D J Fairhurst, Phillip R Bennett, Vasso Terzidou
One of the most established roles of oxytocin (OT) is in inducing uterine contractions and labour. Apart from contractions, our recent study have shown that OT can also activate pro-inflammatory pathways in both human myometrial and amnion cells which suggests the pro-inflammatory role of OT should be taken into account when developing tocolytics targeting the OT/OT receptor (OT/OTR) system. The OTR antagonist, Atosiban, is currently used therapeutically for the treatment of PTL. We have previously shown that Atosiban fails to inhibit the pro-inflammatory effects of OT in human amnion, and Atosiban alone activates NF-κB and MAPKs thus upregulating downstream pro-labour genes...
February 10, 2017: Molecular Pharmacology
https://www.readbyqxmd.com/read/28170094/efficacy-of-freeze-dried-amnion-graft-following-hysteroscopic-adhesiolysis-of-severe-intrauterine-adhesions
#3
Lu Gan, Hua Duan, Fu-Qing Sun, Qian Xu, Yi-Qun Tang, Sha Wang
OBJECTIVE: To evaluate the efficacy of freeze-dried amnion graft for prevention of intrauterine adhesion (IUA) reformation after hysteroscopic adhesiolysis. METHODS: A prospective randomized controlled trial was conducted among 88 women with severe IUAs who underwent hysteroscopic adhesiolysis at Beijing Obstetrics and Gynecology Hospital between July 15, 2015, and July 1, 2016. All participants had a balloon inserted into the uterine cavity for 1 week. Sterilized freeze-dried amnion graft covered the balloon portion of the Foley catheter among patients allocated to the amnion group (n=44), whereas patients in the control group (n=44) did not receive the graft...
February 7, 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28139754/intranasal-delivery-of-a-novel-amnion-cell-secretome-prevents-neuronal-damage-and-preserves-function-in-a-mouse-multiple-sclerosis-model
#4
Reas S Khan, Kimberly Dine, Bailey Bauman, Michael Lorentsen, Lisa Lin, Helayna Brown, Leah R Hanson, Aleta L Svitak, Howard Wessel, Larry Brown, Kenneth S Shindler
The ability of a novel intranasally delivered amnion cell derived biologic to suppress inflammation, prevent neuronal damage and preserve neurologic function in the experimental autoimmune encephalomyelitis animal model of multiple sclerosis was assessed. Currently, there are no existing optic nerve treatment methods for disease or trauma that result in permanent vision loss. Demyelinating optic nerve inflammation, termed optic neuritis, induces permanent visual dysfunction due to retinal ganglion cell damage in multiple sclerosis and experimental autoimmune encephalomyelitis...
January 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28117628/the-isolation-and-production-of-a-ready-to-use-product-the-amniotic-stem-cell-culture-in-accordance-with-gmp-regulations
#5
Diana Kitala, Marek Kawecki, Agnieszka Klama-Baryła, Wojciech Łabuś, Justyna Glik, Małgorzata Kraut, Marcelina Misiuga, Mariusz Nowak
According to the Committee for Advanced Therapies, amniotic stem cells were classified as an advanced therapy medicinal product. This work aims to standardize the isolation of amniotic stem cells and the selection of the optimal time of transplantation and cell application methods in burn patients according to the guidelines of the Good Manufacturing Practice. The placenta used in the study was sourced during a Cesarean section. The remnants of the amnion preparation were placed in a sterile container and transferred to a class B environment, where the primary cultures began...
January 24, 2017: Stem Cells and Development
https://www.readbyqxmd.com/read/28112985/comparison-of-human-amniotic-chorionic-and-umbilical-cord-multipotent-mesenchymal-stem-cells-regarding-their-capacity-for-differentiation-toward-female-germ-cells
#6
Hamid Reza Asgari, Mohammad Akbari, Hossein Yazdekhasti, Zahra Rajabi, Shadan Navid, Fereshte Aliakbari, Niloufar Abbasi, Freidon Sargolzaei Aval, Alireza Shams, Mehdi Abbasi
Placenta harbors a plentiful source of various cells with stem cells or stem-like cell properties, which can be used in therapeutic procedures and research. Mesenchymal stem cells (MSCs) have attracted much attention due to their specific differentiation potential and tolerogenic properties. MSCs have been isolated from different parts of placenta; however, in this study, we isolated MSCs from amnion and chorion membrane, as well as umbilical cord (Wharton's jelly [WJ]) and compared their capacity regarding differentiation toward female germ cells under influence of 10 ng/mL BMP4...
February 2017: Cellular Reprogramming
https://www.readbyqxmd.com/read/28109180/the-intrauterine-renin-angiotensin-system-sex-specific-effects-on-the-prevalence-of-spontaneous-preterm-birth
#7
Kirsty G Pringle, Tamas Zakar, Eugenie R Lumbers
Preterm birth (PTB) is the single largest cause of death in infants and young children. The rate of PTB is significantly higher in male infants, particularly those that are born very preterm. Here we present evidence to suggest that the decidual renin-angiotensin system may play a role in inhibiting inflammation and maintaining the integrity of the fetal membranes during pregnancy, and that sex-specific alterations in the intrauterine RAS could contribute to the increased risk of PTB in male babies. Women carrying female fetuses have high levels of expression of decidual prorenin at term...
January 21, 2017: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/28103990/-effects-of-human-amniotic-epithelial-stem-cells-derived-exosomes-on-healing-of-wound-with-full-thickness-skin-defect-in-rats
#8
B Zhao, G F Wu, Y J Zhang, W Zhang, F F Yang, D Xiao, K X Zeng, J H Shi, L L Su, D H Hu
Objective: To investigate the effects of human amniotic epithelial stem cells-derived exosomes on healing of wound with full-thickness skin defect in rats. Methods: (1) Human amniotic epithelial stem cells were isolated from the amnion tissue of 5 full-term pregnant women in Department of Obstetrics of our hospital by the method of trypsin digestion, and their morphology was observed. The third passage of cells were stained with rhodamine-phalloidin for cytoskeleton observation. The third passage of cells were identified with flow cytometry through the detection of expressions of cell surface markers CD29, CD31, CD34, CD90, CD105, SSEA3, SSEA4 and immunity-related marker human leukocyte antigen-D related site (HLA-DR)...
January 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/28079552/clinical-experience-using-dehydrated-human-amnion-chorion-membrane-allografts-for-acute-and-reconstructive-burn-care
#9
Debra Ann Reilly, Sean Hickey, Paul Glat, William C Lineaweaver, Jeremy Goverman
Amniotic membrane is immunologically privileged and is a reservoir of growth factors and cytokines known to modulate inflammation and enhance the healing process, while also possessing antimicrobial, antifibrosis, and antiscarring properties. These properties establish a strong argument for using amniotic membrane derived products as a treatment for burns. The purpose of this article is to describe the use of commercially available dehydrated human amnion/chorion membrane allografts in patients with partial-thickness and full-thickness burns...
February 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28079551/current-techniques-for-burn-reconstruction-using-dehydrated-human-amnion-chorion-membrane-allografts-as-an-adjunctive-treatment-along-the-reconstructive-ladder
#10
Paul M Glat, Thomas Davenport
The reconstructive ladder is a term coined by reconstructive plastic surgeons to describe levels of increasingly complex management of wounds. The first rungs of the ladder is allowing the wound to heal by secondary intention, advancing up the ladder to direct tissue closure, with skin grafting and tissue transfer (flaps) comprising the higher rungs. Skin grafting and tissue transfer (flaps) at the middle and higher rungs of the ladder are often necessary for the treatment of complex burn injuries. Our purpose is to describe how dehydrated human amnion/chorion membrane allografts may be used as an adjunctive treatment...
February 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28079550/the-use-of-dehydrated-human-amnion-chorion-membranes-in-the-treatment-of-burns-and-complex-wounds-current-and-future-applications
#11
Mayer Tenenhaus
Historically, biologic materials found in nature have been used for a wide variety of medicinal purposes, although their widespread use may be limited due to challenges in obtaining and properly preparing the material for safe clinical use. Amniotic membrane has long been recognized to possess unique properties favorable for healing. Dehydrated human amnion/chorion membrane allografts are commercially available for use in multiple sizes and configurations applicable for a variety of clinical settings and presentations...
February 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28079547/the-evolution-of-burn-injury-management-using-dehydrated-human-amnion-chorion-membrane-allografts-in-clinical-practice
#12
Paul M Glat
No abstract text is available yet for this article.
February 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28050089/creating-neovagina-using-amnion
#13
S K Kathpalia
No abstract text is available yet for this article.
December 2016: Medical Journal, Armed Forces India
https://www.readbyqxmd.com/read/28031106/-protective-effect-of-human-amnion-epithelial-cells-through-endotracheal-instillation-against-lipopolysaccharide-induced-acute-lung-injury-in-mice
#14
Yanmin Xia, Wenchen Wang, Hong Zhang, Jiakuan Chen, Ming Wang, Zhonghu Ge, Jian Wang, Tao Jiang
Objective To investigate the therapeutic effect of human amnion epithelial cells (hAECs) through endotracheal instillation on acute lung injury (ALI) induced by lipopolysaccharide (LPS) in mice and its underlying mechanism. Methods Male C57BL/6 mice were randomly divided into normal control group, hAECs control group, LPS-induced ALI group and hAECs treatment group (n=10 each group). In the latter two groups, mice were subjected to LPS (5 mg/kg) by oral insertion, and 1 hour later, PBS (50 μL) and hAECs (1×10(7)/mL, 50 μL) were administered by oral insertion in the two groups, respectively...
January 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28025631/amniotic-band-syndrome-perinatal-hospice-and-palliative-care-versus-active-management
#15
Shadi Rezai, Justin Faye, Annika Chadee, Sri Gottimukkala, Ruchi Upadhyay, Carla Lara, Benamanahalli H Rajegowda, Andrew D Corwin, Rasila V Lala, Jessica Vernon, Dilfuza Nuritdinova, Stephen Chasen, Cassandra E Henderson
Introduction. Amniotic band syndrome and sequence are a relatively rare condition in which congenital anomalies occur as a result of the adherence and entrapment of fetal parts with coarse fibrous bands of the amniotic membrane. A large percentage of reported cases have an atypical gestational history. The frequency of this obstetric complication is not affected by fetal gender, genetic abnormality, or prenatal infection. Case. A 21-year-old, G1P0 female parturient at 18 weeks and 5 days with a single intrauterine gestation during a routine ultrasound evaluation was noted to have amniotic band sequence...
2016: Case Reports in Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28005004/functional-evolution-of-a-morphogenetic-gradient
#16
Chun Wai Kwan, Jackie Gavin-Smyth, Edwin L Ferguson, Urs Schmidt-Ott
Bone Morphogenetic Proteins (BMPs) pattern the dorsal-ventral axis of bilaterian embryos; however, their roles in the evolution of body plan are largely unknown. We examined their functional evolution in fly embryos. BMP signaling specifies two extraembryonic tissues, the serosa and amnion, in basal-branching flies such as Megaselia abdita, but only one, the amnioserosa, in Drosophila melanogaster. The BMP signaling dynamics are similar in both species until the beginning of gastrulation, when BMP signaling broadens and intensifies at the edge of the germ rudiment in Megaselia, while remaining static in Drosophila...
December 22, 2016: ELife
https://www.readbyqxmd.com/read/27997744/a-comparative-outcomes-analysis-evaluating-clinical-effectiveness-in-two-different-human-placental-membrane-products-for-wound-management
#17
Eric L Johnson, James T Marshall, Georgina M Michael
Advances in tissue preservation have led to the commercialization of human placental membranes for the purposes of wound management with each product being characterized by different compositions and properties. The a priori specification of the research question in this investigator-initiated study focused on the clinical outcomes in two nonrandomized, however statistically equal and homogenous patient cohorts receiving either a viable intact cryopreserved human placental membrane (vCPM) or a dehydrated human amnion/chorion membrane (dHACM), for the management of wounds at a single center...
December 20, 2016: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/27992249/the-role-of-epithelial-to-mesenchymal-transition-in-human-amniotic-membrane-rupture
#18
Carla Janzen, Suvajit Sen, Margarida Y Y Lei, Marina Gagliardi de Assumpcao, John Challis, Gautam Chaudhuri
CONTEXT: Biochemical weakening of the amnion is a major factor preceding preterm premature rupture of membranes (PPROM), leading to preterm birth. Activation of matrix metalloproteinases (MMPs) is known to play a key role in collagen degradation of the amnion, yet epithelial to mesenchymal transition (EMT) that is also induced by MMP activation, has not been investigated as a mechanism for amnion weakening. OBJECTIVE: To measure amniotic EMT associated with vaginal delivery (VD) as compared to non-labored cesarean sections (CS), and assess changes in amniotic mechanical strength with pharmacologic inhibitors and inducers of EMT, thus testing the hypothesis that EMT is a key biochemical event that promotes amniotic rupture...
December 19, 2016: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27941807/self-organized-amniogenesis-by-human-pluripotent-stem-cells-in-a-biomimetic-implantation-like-niche
#19
Yue Shao, Kenichiro Taniguchi, Katherine Gurdziel, Ryan F Townshend, Xufeng Xue, Koh Meng Aw Yong, Jianming Sang, Jason R Spence, Deborah L Gumucio, Jianping Fu
Amniogenesis-the development of amnion-is a critical developmental milestone for early human embryogenesis and successful pregnancy. However, human amniogenesis is poorly understood due to limited accessibility to peri-implantation embryos and a lack of in vitro models. Here we report an efficient biomaterial system to generate human amnion-like tissue in vitro through self-organized development of human pluripotent stem cells (hPSCs) in a bioengineered niche mimicking the in vivo implantation environment...
December 12, 2016: Nature Materials
https://www.readbyqxmd.com/read/27938480/human-amnion-epithelial-cells-protect-against-white-matter-brain-injury-after-repeated-endotoxin-exposure-in-the-preterm-ovine-fetus
#20
Tamara Yawno, Tharani Sabaretnam, Jingang Li, Courtney McDonald, Rebecca Lim, Graham Jenkin, Euan Wallace, Suzanne Miller
<p>Intrauterine inflammation is a significant cause of injury to the developing fetal brain. Using a preterm fetal sheep model of in utero infection, we asked whether human amnion epithelial cells (hAECs) were able to reduce inflammation-induced fetal brain injury.</p><p>Surgery was undertaken on pregnant sheep at ~105 days gestation (term is 147 days) for implantation of vascular catheters. Lipopolysaccharide (LPS; 150 ng/kg bolus) or saline was administered iv at 109, 110 and 111 days. 60 million fluorescent-labeled hAECs were administered at 110, 111, and 112 days gestation via the brachial artery catheter...
31, 2016: Cell Transplantation
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