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Amniotic membran

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https://www.readbyqxmd.com/read/29042971/histological-evidence-of-reparative-activity-in-chorioamniotic-membrane-following-open-fetal-surgery-for-myelomeningocele
#1
Natalia S Carvalho, Antonio F Moron, Ramkumar Menon, Sergio Cavalheiro, Mauricio M Barbosa, Herbene J Milani, Marcia M Ishigai
An increased understanding of the reparative process in fetal membrane following surgical techniques may be helpful to decrease the risks to mother and fetus and avoid adverse pregnancy outcomes. The present study discusses histological evaluation of the fetal membrane following open fetal surgery. Chorioamniotic membranes (n=10) were obtained following birth from pregnancies that underwent open fetal surgery for myelomeningocele. The collagen distribution was quantified using picrosirius-polarization method comparing the suture site with non-suture site...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29037543/amniopatch-treatment-for-preterm-premature-rupture-of-membranes-before-23-weeks-gestation-and-factors-associated-with-its-success
#2
Ji-Hee Sung, Jin-Yi Kuk, Hyun-Hwa Cha, Suk-Joo Choi, Soo-Young Oh, Cheong-Rae Roh, Jong-Hwa Kim
OBJECTIVE: The purpose of this study is to investigate the factors associated with successful amniopatch treatment in patients with iatrogenic preterm premature rupture of membranes (iPPROM) or spontaneous PPROM (sPPROM) before 23 weeks' gestation. MATERIALS AND METHODS: This cohort study included 28 women who received amniopatch treatment due to iPPROM or sPPROM at 15-23 weeks' gestation. Patients' clinical characteristics before performing the amniopatch, factors associated with the procedure, pregnancy and neonatal outcomes were compared between the iPPROM and sPPROM groups, and also between the successful and failed groups...
October 2017: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/29032001/efficacy-of-self-retained-cryopreserved-amniotic-membrane-for-treatment-of-neuropathic-corneal-pain
#3
Melina I Morkin, Pedram Hamrah
PURPOSE: Treatment of neuropathic corneal pain (NCP) remains intricate, and involves a long-term combined multistep approach. The self-retained cryopreserved amniotic membrane (PROKERA(®), Bio-Tissue, Miami,FL) has been utilized for multiple ocular surface disorders. We evaluate the efficacy, safety, and tolerability of ProKera(®) Slim [PKS] and ProKera(®) Clear [PKC] in the treatment of NCP. METHODS: Retrospective case series of 9 patients who received PKS/PKC for the acute treatment of NCP...
October 12, 2017: Ocular Surface
https://www.readbyqxmd.com/read/29030612/healing-of-preterm-ruptured-fetal-membranes
#4
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/29027307/transient-amniotic-fluid-leakage-after-fetoscopic-laser-photocoagulation-for-twin-twin-transfusion-syndrome
#5
Shiyo Ota, Keisuke Ishii, Hiroshi Kawamura, Aki Mabuchi, Ryo Yamamoto, Shusaku Hayashi, Takeshi Kanagawa, Nobuaki Mitsuda
AIM: Iatrogenic premature rupture of membrane (PROM) is one of the major complications related to fetoscopic laser photocoagulation (FLP) for twin-twin transfusion syndrome (TTTS). However, amniotic fluid leakage (AFL) sometimes spontaneously disappears. This study evaluated the incidence and clinical characteristics of transient AFL after FLP. METHODS: We retrospectively reviewed pregnancies that underwent FLP for TTTS at a single center. Patients with apparent AFL within 2 weeks after FLP were divided into two groups: transient AFL, defined by the disappearance of fluid leakage within a week; and PROM, if AFL persisted continuously for more than a week or premature birth occurred, including miscarriage, within a week of the first symptom of AFL...
October 13, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/29020827/the-frequency-and-clinical-significance-of-intra-amniotic-inflammation-in-twin-pregnancies-with-preterm-labor-and-intact-membranes
#6
Kyung Joon Oh, Joon-Seok Hong, Roberto Romero, Bo Hyun Yoon
OBJECTIVE: The objective of this study is to evaluate the frequency and clinical significance of intra-amniotic inflammation in twin pregnancies with preterm labor and intact membranes. STUDY DESIGN: Amniotic fluid (AF) was retrieved from both sacs in 90 twin gestations with preterm labor and intact membranes (gestational age between 20 and 34 6/7 weeks). Preterm labor was defined as the presence of painful regular uterine contractions, with a frequency of at least 2 every 10 min, requiring hospitalization...
October 11, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28976415/amniotic-membrane-grafts-to-reduce-pterygium-recurrence
#7
Ronald Rosen
PURPOSE: To demonstrate the long-term outcome of pterygium surgery with adjunctive amniotic membrane transplantation (AMT) and intraoperative mitomycin C (MMC) in a large case series. METHODS: Medical records were retrieved for this noncomparative retrospective study of all patients who had pterygium excision with adjunctive AMT and intraoperative MMC, from October 2010 to June 2016 with at least 6 months of follow-up. RESULTS: There were a total of 556 eyes of 535 patients (291 males and 244 females) with average age of 51...
October 2, 2017: Cornea
https://www.readbyqxmd.com/read/28974213/short-term-in-vivo-morphological-changes-of-amniotic-membrane-after-fibrin-glue-assisted-pterygium-surgery-on-anterior-segment-optical-coherence-tomography-a-case-presentation
#8
Jun Hyuk Son, Su-Ho Lim
BACKGROUND: The evaluations of morphological changes of amniotic membrane (AM), even after successful AM transplantation surgery without complications, may be difficult. Moreover, there was no report regarding morphological changes after fibrin glue-assisted AM transplantation with pterygium excision. Here, we highlight and describe the use of spectral domain optical coherence tomography (OCT) for the evaluation of the morphological features of amniotic membrane (AM) and of associated in vivo structural changes after fibrin glue-assisted pterygium surgery...
October 3, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28969268/comparative-evaluation-of-platelet-rich-fibrin-and-dehydrated-amniotic-membrane-for-the-treatment-of-gingival-recession-a-clinical-study
#9
Ankita Jain, Gagan Rajesh Jaiswal, Kanteshwari Kumathalli, Rajesh Kumar, Alisha Singh, Aakrti Sarwan
INTRODUCTION: The main objective of any therapeutic intervention aimed at root coverage is to restore the tissue margin to the cemento-enamel junction and to regenerate the lost periodontium. AIM: To compare the effectiveness of Platelet Rich Fibrin (PRF) and Amniotic Membrane (AM) in the treatment of gingival recession by Coronally Advanced Flap (CAF) Technique. MATERIALS AND METHODS: Thirty systemically healthy patients who met inclusion-exclusion criteria were selected...
August 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28967638/postnatal-extra-embryonic-tissues-as-a-source-of-multiple-cell-types-for-regenerative-medicine-applications
#10
O S Gubar, A E Rodnichenko, R G Vasyliev, A V Zlatska, D O Zubov
AIM: We aimed to isolate and characterize the cell types which could be obtained from postnatal extra-embryonic tissues. MATERIALS AND METHODS: Fresh tissues (no more than 12 h after delivery) were used for enzymatic or explants methods of cell isolation. Obtained cultures were further maintained at 5% oxygen. At P3 cell phenotype was assessed by fluorescence-activated cell sorting, population doubling time was calculated and the multilineage differentiation assay was performed...
September 2017: Experimental Oncology
https://www.readbyqxmd.com/read/28967074/palladium-103-plaque-radiation-therapy-for-ciliary-body-melanoma-through-a-functioning-glaucoma-filtering-bleb
#11
Arif H K Pathan, Alexander Barash, Lawrence B Tena, Paul T Finger
PURPOSE: To provide a clinical description of the long-term outcome of a 103Pd plaque-irradiated ciliary body melanoma with extrascleral extension while attempting to preserve a subadjacent glaucoma filtering bleb. METHODS: A 75-year-old woman with pseudoexfoliative glaucoma for 17 years, 16 years status post argon laser trabeculoplasty, and 15 years status post trabeculectomy in the left eye, was diagnosed with an ipsilateral ciliary body melanoma with visible extrascleral extension...
September 23, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28963485/human-amniotic-membrane-mesenchymal-stem-cells-inhibit-neutrophil-extracellular-traps-through-tsg-6
#12
Fátima Sofía Magaña-Guerrero, Alfredo Domínguez-López, Pamela Martínez-Aboytes, Beatriz Buentello-Volante, Yonathan Garfias
The mesenchymal stem cells obtained from human amniotic membrane (hAMSC) possess immunosuppressive functions through soluble factors such as prostanoids and proteins; thus, they have been proposed to ameliorate inflammatory processes. On the other hand, activated neutrophils are cells of the first line of immune defense that are able to release extracellular traps (NETs). NETs are formed of DNA and granular components; however, the excessive release of NETs is associated with the development of autoimmune and chronic inflammatory diseases...
September 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28957834/use-of-self-retained-cryopreserved-amniotic-membrane-in-the-treatment-of-acute-chemical-ocular-burn
#13
Adam T Shupe, Anny M S Cheng
SIGNIFICANCE: Ocular chemical injury is a medical emergency in which immediate treatment is critical to prevent visual morbidity. We report a severe ocular burn case that illustrates in-office management to promote rapid re-epithelialization and reduce inflammation to restore ocular surface integrity. PURPOSE: To report a case of severe acid burn that was managed successfully with self-retained cryopreserved amniotic membrane (AM). METHODS: A 43-year-old man presented with complaints of pain, light sensitivity, and blurred vision in both eyes 1 day after ocular exposure to acid...
September 27, 2017: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/28957444/optimizing-the-role-of-limbal-explant-size-and-source-in-determining-the-outcomes-of-limbal-transplantation-an-in-vitro-study
#14
Abhinav Reddy Kethiri, Sayan Basu, Sachin Shukla, Virender Singh Sangwan, Vivek Singh
PURPOSE: Simple limbal epithelial transplantation (SLET) and cultivated limbal epithelial transplantation (CLET) are proven clinical techniques for treating limbal stem cell deficiency (LSCD). However, the ideal size and number of the limbal explants required for transplantation has not been clearly elucidated. This in vitro study aimed to determine the optimal limbal explant size required for complete corneal epithelialization by characterizing the cell expansion. METHODS: Limbal explants obtained from both live and cadaveric biopsies were cultured on the denuded amniotic membrane...
2017: PloS One
https://www.readbyqxmd.com/read/28954025/surgical-amniotic-membrane-transplantation-after-conjunctival-and-limbal-tumor-excision
#15
Seniz Engur Goktas, Yasemin Katircioglu, Tuba Celik, Firdevs Ornek
Purpose: To evaluate the clinical results of patients treated by amniotic membrane transplantation (AMT) following excision of conjunctival and limbal tumors. Methods: A total of 14 eyes of 14 patients who underwent AMT after total lesion-free tumor excision and perilesional cryotherapy were evaluated. Results: The excised tumors comprised 7 conjunctival intraepithelial neoplasia, 5 conjunctival nevus, 1 primary acquired melanosis, and 1 squamous cell carcinoma...
July 2017: Arquivos Brasileiros de Oftalmologia
https://www.readbyqxmd.com/read/28950738/a-predictive-neonatal-mortality-score-for-women-with-premature-rupture-of-membranes-after-22-27-weeks-of-gestation
#16
Michèle Eve Toukam, Marion Luisin, Julien Chevreau, Ségolène Lanta-Delmas, Jean Gondry, Pierre Tourneux
OBJECTIVE: Premature rupture of the membranes (PROM) remains a leading cause of neonatal morbidity. The objectives of the present study were to analyze the outcomes of pregnancies complicated by PROM between 22 and 27(+6) weeks of gestation (WG) and to study antepartum risk factors that might predict neonatal death. PATIENTS AND METHODS: One hundred and seven pregnancies were analyzed over a 3-year period in a tertiary maternity hospital. The collected maternal and neonatal data were used to model and predict the outcome of PROM...
September 26, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28947445/a-study-protocol-for-a-multicentre-randomised-clinical-trial-evaluating-the-safety-and-feasibility-of-a-bioengineered-human-allogeneic-nanostructured-anterior-cornea-in-patients-with-advanced-corneal-trophic-ulcers-refractory-to-conventional-treatment
#17
Miguel González-Andrades, Rosario Mata, María Del Carmen González-Gallardo, Santiago Medialdea, Salvador Arias-Santiago, Juliana Martínez-Atienza, Antonio Ruiz-García, Lorena Pérez-Fajardo, Antonio Lizana-Moreno, Ingrid Garzón, Antonio Campos, Miguel Alaminos, Gloria Carmona, Natividad Cuende
INTRODUCTION: There is a need to find alternatives to the use of human donor corneas in transplants because of the limited availability of donor organs, the incidence of graft complications, as well as the inability to successfully perform corneal transplant in patients presenting limbal deficiency, neo-vascularized or thin corneas, etc. We have designed a clinical trial to test a nanostructured fibrin-agarose corneal substitute combining allogeneic cells that mimics the anterior human native cornea in terms of optical, mechanical and biological behaviour...
September 24, 2017: BMJ Open
https://www.readbyqxmd.com/read/28941321/solubilized-amnion-membrane-hyaluronic-acid-hydrogel-accelerates-full-thickness-wound-healing
#18
Sean V Murphy, Aleksander Skardal, Lujie Song, Khiry Sutton, Rebecca Haug, David L Mack, John Jackson, Shay Soker, Anthony Atala
The early and effective treatment of wounds is vital to ensure proper wound closure and healing with appropriate functional and cosmetic outcomes. The use of human amnion membranes for wound care has been shown to be safe and effective. However, the difficulty in handling and placing thin sheets of membrane, and the high costs associated with the use of living cellularized tissue has limited the clinical application of amniotic membrane wound healing products. Here, we describe a novel amnion membrane-derived product, processed to result in a cell-free solution, while maintaining high concentrations of cell-derived cytokines and growth factors...
September 23, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28941146/tracheal-repair-with-acellular-human-amniotic-membrane-in-a-rabbit-model
#19
Lianna Ferrari Jorge, Julio C Francisco, Nelson Bergonse, Cristina Baena, Katherine Athayde T Carvalho, Eltyeb Abdelwahid, Jose Rocha Faria Neto, Luiz Felipe Pinho Moreira, Luiz Cesar Guarita-Souza
BACKGROUND: Surgical correction of tracheal stenosis is still a complex and challenging procedure. Acellular human amniotic membranes (AHAM) represent a promising biomaterial source for tissue regeneration. The aim of this study was to evaluate whether AHAM grafts improve tissue regeneration of the trachea in a rabbit model of tracheostomy. METHODS: Twenty rabbits were randomized into two groups. Animals in the control group underwent surgical tracheostomy only and animals in the AHAM group underwent surgical tracheostomy and received an AHAM graft that covered the defect site...
September 22, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28939908/microbiome-profile-of-the-amniotic-fluid-as-a-predictive-biomarker-of-perinatal-outcome
#20
Daichi Urushiyama, Wataru Suda, Eriko Ohnishi, Ryota Araki, Chihiro Kiyoshima, Masamitsu Kurakazu, Ayako Sanui, Fusanori Yotsumoto, Masaharu Murata, Kazuki Nabeshima, Shin'ichiro Yasunaga, Shigeru Saito, Makoto Nomiyama, Masahira Hattori, Shingo Miyamoto, Kenichiro Hata
Chorioamnionitis (CAM), an inflammation of the foetal membranes due to infection, is associated with preterm birth and poor perinatal prognosis. The present study aimed to determine whether CAM can be diagnosed prior to delivery based on the bacterial composition of the amniotic fluid (AF). AF samples from 79 patients were classified according to placental inflammation: Stage III (n = 32), CAM; Stage II (n = 27), chorionitis; Stage 0-I (n = 20), sub-chorionitis or no neutrophil infiltration; and normal AF in early pregnancy (n = 18)...
September 22, 2017: Scientific Reports
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