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Uterine transplantation

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https://www.readbyqxmd.com/read/28339553/de-and-recellularization-of-the-pig-uterus-a-bioengineering-pilot-study%C3%A2
#1
Hannes Campo, Pedro M Baptista, Nuria López-Pérez, Amparo Faus, Irene Cervelló, Carlos Simón
Absolute uterine factor infertility, or the absence of a functional uterus, has a prevalence of 3%-5% in the general population. Despite the great strides being made in reproductive medicine, patients diagnosed with absolute uterine factor infertility remain untreatable. The only available solution has been gestational surrogacy, but recently the Brannström group presented a viable alternative by reporting the first successful live birth after uterus transplantation. Similar to other transplantations, this approach has inherent limitations such as the paucity of donor organs and the need for long-term immunosuppression...
December 27, 2016: Biology of Reproduction
https://www.readbyqxmd.com/read/28325116/stem-cell-markers-describe-a-transition-from-somatic-to-pluripotent-cell-states-in-a-rat-model-of-endometriosis
#2
Essam Rashad Othman, Fatma Yassine Meligy, Ayat Abdel-Rahman Sayed, Mohamed Ahmed El-Mokhtar, Abeer Mohamed Refaiy
OBJECTIVE: To study Thy1 as a fibroblast marker, SSEA1 as a marker of intermediate pluripotency, and Oct4 as a marker of established pluripotency in rat model of endometriosis. DESIGN: In vivo animal study. MATERIALS AND METHODS: Endometriosis was induced in 20 albino female rats through autologous transplantation of one uterine horn to mesentery of intestine. Other 20 rats had their horn removed without transplantation (controls). Rats were sacrificed 4 weeks after induction surgery...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28285950/human-amniotic-mesenchymal-stromal-cell-transplantation-improves-endometrial-regeneration-in-rodent-models-of-intrauterine-adhesions
#3
Lu Gan, Hua Duan, Qian Xu, Yi-Qun Tang, Jin-Jiao Li, Fu-Qing Sun, Sha Wang
BACKGROUND AIMS: Intrauterine adhesion (IUA) is a common uterine cavity disease characterized by the unsatisfactory regeneration of damaged endometria. Recently, stem cell transplantation has been proposed to promote the recovery process. Here we investigated whether human amniotic mesenchymal stromal cells (hAMSCs), a valuable resource for transplantation therapy, could improve endometrial regeneration in rodent IUA models. METHODS: Forty female Sprague-Dawley rats were randomly assigned to five groups: normal, sham-operated, mechanical injury, hAMSC transplantation, and negative control group...
March 9, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28283262/uterine-viability-in-the-baboon-after-ligation-of-uterine-vasculature-a-pilot-study-to-assess-alternative-perfusion-and-venous-return-for-uterine-transplantation
#4
Marie Shockley, Katrin Arnolds, Benjamin Beran, Krishna Rivas, Pedro Escobar, Andreas Tzakis, Tommaso Falcone, Michael L Sprague, Stephen Zimberg
OBJECTIVE: To assess, in two separate groups of baboons, uterine viability after ligation of the uterine veins and uterine viability after ligation of both the uterine arteries and veins, respectively. DESIGN: Prospective, observational study. SETTING: Baboon breeding colony. ANIMAL(S): Six naïve female Papio hamadryas baboons with indicators of normal reproductive function. INTERVENTION(S): Three baboons underwent surgical interruption of the uterine veins bilaterally, and three baboons underwent surgical interruption of the uterine arteries and the uterine veins bilaterally...
March 7, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28279591/hla-g-at-the-interface-of-maternal-fetal-tolerance
#5
REVIEW
Leonardo M R Ferreira, Torsten B Meissner, Tamara Tilburgs, Jack L Strominger
During pregnancy, semiallogeneic fetal extravillous trophoblasts (EVT) invade the uterine mucosa without being rejected by the maternal immune system. Several mechanisms were initially proposed by Peter Medawar half a century ago to explain this apparent violation of the laws of transplantation. Then, three decades ago, an unusual human leukocyte antigen (HLA) molecule was identified: HLA-G. Uniquely expressed in EVT, HLA-G has since become the center of the present understanding of fetus-induced immune tolerance...
March 6, 2017: Trends in Immunology
https://www.readbyqxmd.com/read/28264580/-ethical-aspects-of-uterus-transplantation
#6
Roman Chmel, Marta Nováčková, Zlatko Pastor, Jan Matěcha, Miloš Čekal, Jiří Froněk
Uterus transplantation is an experimental treatment method with an ambition to become accepted treatment modality for women with absolute uterine factor infertility. The only legal alternative for these women to get parenthood is adoption which is accepted by most world societies and countries. Surrogate pregnancy is connected with many medical, ethical, legal, religious and social controversies in the great part of the world.Donors (in living donation), recipients, partners and also unborn children must be incorporated into the analysis of ethical risks and benefits of uterus transplantation...
2017: Casopís Lékar̆ů C̆eských
https://www.readbyqxmd.com/read/28264579/-possibility-of-uterus-transplantation-trial-in-czech-republic-indications-research-and-clinical-experience
#7
Roman Chmel, Marta Nováčková, Zlatko Pastor, Jan Matěcha, Miloš Čekal, Jiří Froněk
Uterus transplantation is a novel experimental method of female infertility treatment. It is an appropriate treatment modality for women with absolute uterine factor infertility - congenital uterine malformations, absent uterus, hysterectomized women and non-functional uterus.Successful animal studies confirming the safety and efficacy were performed before introduction of uterus transplantation into human medicine. The first clinical trial was performed in 2012-2013 in Gothenburg, Sweden. The first child from the transplanted womb was delivered in 2014...
2017: Casopís Lékar̆ů C̆eských
https://www.readbyqxmd.com/read/28222080/patient-inspired-research-a-better-way-to-go
#8
(no author information available yet)
Recently, I attended a meeting of the Oncofertility Consortium and had one of those "a-ha" moments that change one's perspective in a very real way. A surgeon from Sweden was talking about uterus transplantations, and she described how these came about. She told a story about one of her colleagues, who was talking to a young woman who had cervical cancer and had a hysterectomy. The patient asked the physician if they could give her a "new" uterus so that one day she could have a biological child. The physician told her that was not possible and the patient responded, "Why not?" That prompted the physician to start a new field of research, uterine transplantation, that has had some early successes, as well as many failures...
March 1, 2017: Oncology Nursing Forum
https://www.readbyqxmd.com/read/28034338/bioengineering-strategies-to-treat-female-infertility
#9
Che-Ying Kuo, Hannah Baker, Melissa H Fries, James J Yoo, Peter C W Kim, John P Fisher
Bioengineering strategies have demonstrated enormous potential to treat female infertility as a result of chemotherapy, uterine injuries, fallopian tube occlusion, massive intrauterine adhesions, congenital uterine malformations, and hysterectomy. These strategies can be classified into two broad categories as follows: (i) Transplantation of fresh or cryopreserved organs into the host and (ii) tissue engineering approaches that utilize a combination of cells, growth factors, and biomaterials that leverages the body's inherent ability to regenerate/repair reproductive organs...
February 3, 2017: Tissue Engineering. Part B, Reviews
https://www.readbyqxmd.com/read/28025841/regulation-of-diapause-in-carnivores
#10
J C Fenelon, P L Lefèvre, A Banerjee, B D Murphy
Embryonic diapause is an evolutionary strategy to ensure that offspring are born when maternal and environmental conditions are optimal for survival. In many species of carnivores, obligate embryonic diapause occurs in every gestation. In mustelids, the regulation of diapause and reactivation is influenced by photoperiod, which then acts to regulate the secretion of pituitary prolactin. Prolactin in turn regulates ovarian steroid function. Reciprocal embryo transplant studies indicate that this state of embryonic arrest is conferred by uterine conditions and is presumed to be due to a lack of specific factors necessary for continued development...
December 27, 2016: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/27995397/uterine-tissue-engineering-and-the-future-of-uterus-transplantation
#11
Mats Hellström, Sara Bandstein, Mats Brännström
The recent successful births following live donor uterus transplantation are proof-of-concept that absolute uterine factor infertility is a treatable condition which affects several hundred thousand infertile women world-wide due to a dysfunctional uterus. This strategy also provides an alternative to gestational surrogate motherhood which is not practiced in most countries due to ethical, religious or legal reasons. The live donor surgery involved in uterus transplantation takes more than 10 h and is then followed by years of immunosuppressive medication to prevent uterine rejection...
December 19, 2016: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/27982170/uterine-transplantation-a-systematic-review
#12
Dani Ejzenberg, Luana Regina Baratelli Carelli Mendes, Luciana Bertocco de Paiva Haddad, Edmund Chada Baracat, Luiz Augusto Carneiro D'Albuquerque, Wellington Andraus
Up to 15% of the reproductive population is infertile, and 3 to 5% of these cases are caused by uterine dysfunction. This abnormality generally leads women to consider surrogacy or adoption. Uterine transplantation, although still experimental, may be an option in these cases. This systematic review will outline the recommendations, surgical aspects, immunosuppressive drugs and reproductive aspects related to experimental uterine transplantation in women.
November 1, 2016: Clinics
https://www.readbyqxmd.com/read/27982161/first-latin-uterine-transplantation-we-can-do-it
#13
EDITORIAL
José Maria Soares, Dani Ejzenberg, Wellington Andraus, Luiz Augusto Carneiro D'Albuquerque, Edmund Chada Baracat
No abstract text is available yet for this article.
November 1, 2016: Clinics
https://www.readbyqxmd.com/read/27941441/live-donors-of-the-initial-observational-study-of-uterus-transplantation-psychological-and-medical-follow-up-until-1-year-after-surgery-in-the-9-cases
#14
Niclas Kvarnström, Stina Järvholm, Liza Johannesson, Pernilla Dahm-Kähler, Michael Olausson, Mats Brännström
BACKGROUND: The first prospective observational study of uterus transplantation was initiated in 2013 with live donation to 9 women with absolute uterine factor infertility. We explored the medical complications and psychosocial wellbeing of the donors during the first postoperative year. METHODS: Complications were registered and graded according to the Clavien-Dindo (C-D) classification. Symptoms related to the surgery were registered. Data on length of hospital stay, sick leave, socioeconomic parameters, and life events were obtained...
March 2017: Transplantation
https://www.readbyqxmd.com/read/27921235/transplantation-of-collagen-scaffold-with-autologous-bone-marrow-mononuclear-cells-promotes-functional-endometrium-reconstruction-via-downregulating-%C3%AE-np63-expression-in-asherman-s-syndrome
#15
Guangfeng Zhao, Yun Cao, Xianghong Zhu, Xiaoqiu Tang, Lijun Ding, Haixiang Sun, Juan Li, Xinan Li, Chenyan Dai, Tong Ru, Hui Zhu, Jingjie Lu, Caimei Lin, Jingmei Wang, Guijun Yan, Huiyan Wang, Lei Wang, Yimin Dai, Bin Wang, Ruotian Li, Jianwu Dai, Yan Zhou, Yali Hu
Asherman's syndrome (AS) is a common disease that presents endometrial regeneration disorder. However, little is known about its molecular features of this aregenerative endometrium in AS and how to reconstruct the functioning endometrium for the patients with AS. Here, we report that ΔNp63 is significantly upregulated in residual epithelial cells of the impaired endometrium in AS; the upregulated-ΔNp63 induces endometrial quiescence and alteration of stemness. Importantly, we demonstrate that engrafting high density of autologous bone marrow mononuclear cells (BMNCs) loaded in collagen scaffold onto the uterine lining of patients with AS downregulates ΔNp63 expression, reverses ΔNp63-induced pathological changes, normalizes the stemness alterations and restores endometrial regeneration...
December 1, 2016: Science China. Life Sciences
https://www.readbyqxmd.com/read/27905000/decidual-natural-killer-cells-and-the-immune-microenvironment-at-the-maternal-fetal-interface
#16
REVIEW
Binqing Fu, Haiming Wei
During early pregnancy, an orchestrated evolutionary maternal adaption toward tolerance of the semiallogeneic fetus is required to ensure decidualization and early embryo development. Remodeling of the immune system involves natural killer cells (NKs), macrophages, T cells and dendritic cells (DCs) altering the microenvironment in the deciduas. In particular, a unique population of NK cells with a CD56(bright)CD16(-) phenotype in the decidua has been proposed to play a key role in the maternal adaptation to pregnancy...
December 2016: Science China. Life Sciences
https://www.readbyqxmd.com/read/27868389/monitoring-of-human-uterus-transplantation-with-cervical-biopsies-a-provisional-scoring-system-for-rejection
#17
J Mölne, V Broecker, J Ekberg, O Nilsson, P Dahm-Kähler, M Brännström
Until now, absolute uterine factor infertility has been the major untreatable form of female infertility. Uterus transplantation has recently proven to be the first successful treatment for absolute uterine factor infertility, with demonstration of live births. In this study, live donation uterus transplantation was performed in nine women. In total, 163 cervical biopsies (149 protocol, 14 follow-up) were taken to detect histopathological signs of rejection. Based on experience from animal experiments, we used a three-grade scoring system to evaluate biopsies systematically...
November 21, 2016: American Journal of Transplantation
https://www.readbyqxmd.com/read/27790149/co-micronized-palmitoylethanolamide-polydatin-treatment-causes-endometriotic-lesion-regression-in-a-rodent-model-of-surgically-induced-endometriosis
#18
Rosanna Di Paola, Roberta Fusco, Enrico Gugliandolo, Rosalia Crupi, Maurizio Evangelista, Roberta Granese, Salvatore Cuzzocrea
Endometriosis is a chronic, painful disease characterized by the presence of endometrial glands and stroma outside the uterine cavity. Palmitoylethanolamide (PEA), an endogenous fatty acid amide, has anti-inflammatory and neuroprotective effects. PEA lacks free radical scavenging activity, unlike polydatin (PLD), a natural precursor of resveratrol. The aim of this study was to investigate the effect of orally administered co-micronized PEA/polydatin [m(PEA/PLD)] in an autologous rat model of surgically induced endometriosis...
2016: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/27786342/multispectral-imaging-of-organ-viability-during-uterine-transplantation-surgery-in-rabbits-and-sheep
#19
Neil T Clancy, Srdjan Saso, Danail Stoyanov, Vincent Sauvage, David J Corless, Michael Boyd, David E Noakes, Meen-Yau Thum, Sadaf Ghaem-Maghami, James Richard Smith, Daniel S Elson
No abstract text is available yet for this article.
October 1, 2016: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/27786258/surgical-technique-for-allogeneic-uterus-transplantation-in-macaques
#20
Hideaki Obara, Iori Kisu, Yojiro Kato, Yohei Yamada, Kentaro Matsubara, Katsura Emoto, Masataka Adachi, Yusuke Matoba, Kiyoko Umene, Yuya Nogami, Kouji Banno, Hideaki Tsuchiya, Iori Itagaki, Ikuo Kawamoto, Takahiro Nakagawa, Hirohito Ishigaki, Yasushi Itoh, Kazumasa Ogasawara, Yoko Saiki, Shin-Ichi Sato, Kenshi Nakagawa, Takashi Shiina, Daisuke Aoki, Yuko Kitagawa
No study has reported an animal model of uterus transplantation (UTx) using cynomolgus macaques. We aimed to establish a surgical technique of allogeneic UTx assuming the recovery of a uterus from a deceased donor in cynomolgus macaques. Four allogeneic UTxs were performed in female cynomolgus macaques. Donor surgeries comprised en bloc recovery of organs with iliac vessels on both sides, and/or abdominal aorta/vena cava after sufficient perfusion from one femoral artery or external iliac artery. Before perfusion, 150 mL of whole blood was obtained from the donor for subsequent blood transfusion to the recipient...
October 27, 2016: Scientific Reports
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