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Ovarian strips

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https://www.readbyqxmd.com/read/29597012/differential-expression-of-gonadotropin-and-estrogen-receptors-and-oocyte-cytology-during-follicular-maturation-associated-with-egg-viability-in-european-eel-anguilla-anguilla
#1
Filipa F G da Silva, Helge Tveiten, Gersende Maugars, Anne-Gaëlle Lafont, Sylvie Dufour, Josianne G Støttrup, Elin Kjørsvik, Jonna Tomkiewicz
In captivity, oogenesis and ovarian follicle maturation in European eel can be induced experimentally using hormonal therapy. The follicle's ability to respond effectively to the induction of maturation and ovulation, resulting in viable eggs, depends on the oocyte stage at the time of induction. We hypothesized that variation in the expression of key hormone receptors in the ovary and size of oocyte lipid droplets are associated with changes in oocyte stage. Thus, we induced ovarian follicle maturation using a priming dose of fish pituitary extract followed by an administration of 17α, 20β-dihydroxy-4-pregnen-3-one (DHP)...
March 26, 2018: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/29580734/morbidity-of-rectosigmoid-resection-in-cytoreductive-surgery-for-ovarian-cancer-risk-factor-analysis
#2
M Fournier, C Huchon, C Ngo, C Bensaid, A S Bats, P Combe, M A le FrèreBelda, L Fournier, A Berger, F Lecuru
AIM: Rectosigmoid resection is often performed during cytoreductive surgery for ovarian cancer, to achieve the goal of no residual tumour. Here, we evaluated the morbidity associated with rectosigmoid resection and the underlying risk factors. METHODS: We retrospectively assessed consecutive patients managed with rectosigmoid resection during cytoreductive surgery for ovarian cancer at our centre in Paris, France, between 2005 and 2013. All previously identified risk factors were analysed...
January 13, 2018: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29492102/radical-en-bloc-peritonectomy-in-advanced-ovarian-cancer
#3
Víctor Lago, Santiago Domingo, Luis Matute, Pablo Padilla-Iserte, Marta Gurrea
In order to reach cytoreduction in advanced ovarian cancer, peritonectomy and diaphragmatic stripping are procedures required to remove the disease in the upper abdomen. Diaphragm involvement is estimated in up to 40% of cases. Nevertheless, in some of these patients, the tumour volume may constitute a limitation of the technique due to the association with abdominal wall involvement, bulky tumour at the Morrison's pouch or liver infiltration. Extensive upper abdominal procedures should represent a basic resource for the gynaecologic oncologist in order to reach an optimal cytoreduction...
2018: Ecancermedicalscience
https://www.readbyqxmd.com/read/29425943/chlorinated-insecticides-toxaphene-and-endrin-affect-oxytocin-testosterone-oestradiol-and-prostaglandin-secretion-from-ovarian-and-uterine-cells-as-well-as-myometrial-contractions-in-cow-in%C3%A2-vitro
#4
Michael Hubert Wrobel, Jaroslaw Mlynarczuk
We examined the direct effects of toxaphene and endrin, chlorinated insecticides that are widespread in the environment, on myometrial contractions and on the secretion of hormones involved in regulating these contractions. Granulosa, luteal, endometrial and myometrial cells, and myometrial strips from non-pregnant cows were incubated with both insecticides at environmentally relevant doses. Toxaphene inhibited and endrin stimulated the secretion of testosterone and oestradiol from granulosa cells. Toxaphene also inhibited and endrin stimulated the expression of the mRNA encoding the precursor of oxytocin (OT), as well OT secretion in luteal cell cultures...
February 3, 2018: Chemosphere
https://www.readbyqxmd.com/read/29425251/is-oxygen-availability-a-limiting-factor-for-in-vitro-folliculogenesis
#5
Riccardo Talevi, Sam Sudhakaran, Vincenza Barbato, Anna Merolla, Sabrina Braun, Maddalena Di Nardo, Valentina Costanzo, Raffaele Ferraro, Nicola Iannantuoni, Gerardo Catapano, Roberto Gualtieri
Transplantation of ovarian tissue for the preservation of fertility in oncological patients is becoming an accepted clinical practice. However, the risk of re-introducing tumour cells at transplantation has stirred an increased interest for complete in vitro folliculogenesis. This has not yet been achieved in humans possibly for the lack of knowledge on the environmental milieu that orchestrates folliculogenesis in vivo. The main aim of this study was to investigate the effect of oxygen availability on follicle health and growth during in vitro culture of ovarian tissue strips...
2018: PloS One
https://www.readbyqxmd.com/read/29390119/metaphase-ii-oocytes-from-human-unilaminar-follicles-grown-in-a-multi-step-culture-system
#6
M McLaughlin, D F Albertini, W H B Wallace, R A Anderson, E E Telfer
STUDY QUESTION: Can complete oocyte development be achieved from human ovarian tissue containing primordial/unilaminar follicles and grown in vitro in a multi-step culture to meiotic maturation demonstrated by the formation of polar bodies and a Metaphase II spindle? SUMMARY ANSWER: Development of human oocytes from primordial/unilaminar stages to resumption of meiosis (Metaphase II) and emission of a polar body was achieved within a serum free multi-step culture system...
January 30, 2018: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29136731/-the-surgical-treatment-of-ovarian-cancer-metastasis-between-liver-and-diaphragm-a-report-of-83-cases
#7
Y Y Xu, X Lu, Y L Mao, J P Xiong, J Bian, H C Huang, H Y Yang, X T Sang, H T Zhao, H F Xu, T Y Chi, S D Du, S X Zhong, J F Huang
Objective: To explore the safety and feasibility of associating diaphragm resection and liver-diaphragmatic metastasis lesions resection for patients with advanced ovarian cancer. Methods: Retrospectively analysis 83 cases(98 times) of advanced ovarian cancer with liver-diaphragmatic metastasis between January 2012 and December 2016 at Department of Liver Surgery, Peking Union Medical College Hospital.The patients were aged from 19 to 75 years.Surgical procedure included metastatic lesions resection(43 times) and stripping(55 times)...
November 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/29107246/the-inhibition-of-myometrial-contractions-by-chlorinated-herbicides-atrazine-and-linuron-and-their-disruptive-effect-on-the-secretory-functions-of-uterine-and-ovarian-cells-in-cow-in-vitro
#8
Michał H Wrobel, Jaroslaw Mlynarczuk
The effect of atrazine and linuron, the popular and widely used chlorinated herbicides, on both myometrial contractions and secretory functions of bovine uterus and ovaries in vitro, was investigated. The pesticides inhibited (P<0.05) the basal and oxytocin (OT)-stimulated myometrial strips contractions, as well as the effect of OT on secretion of prostaglandins (PGs: PGF2α and PGE2) from endometrium. But only linuron inhibits the effect of OT on myometrial contractions. Neither of herbicides affected PGs secretion from myometrium and PGF2α from endometrium...
October 2017: Pesticide Biochemistry and Physiology
https://www.readbyqxmd.com/read/29098533/follicle-activation-is-a-significant-and-immediate-cause-of-follicle-loss-after-ovarian-tissue-transplantation
#9
Zohar Gavish, Itay Spector, Gil Peer, Stefan Schlatt, Joachim Wistuba, Hadassa Roness, Dror Meirow
PURPOSE: Extensive follicle loss has been demonstrated in ovarian grafts post transplantation, reducing their productivity and lifespan. Several mechanisms for this loss have been proposed, and this study aims to clarify when and how the massive follicle loss associated with transplantation of ovarian tissue graft occurs. An understanding of the mechanisms of follicle loss will pinpoint potential new targets for optimization and improvement of this important fertility preservation technique...
January 2018: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29059800/a-rapid-quantitative-determination-method-of-luteinizing-hormone-with-gold-immunochromatographic-strip
#10
Juntao Liu, Zhuang Kong, Yang Wang, Yan Fan, Jinping Luo, Shengwei Xu, Hongyan Jin, Xinxia Cai
Measurement of Luteinizing hormone (LH) levels is of great importance in guidance for pregnancy, diagnosis of ovarian diseases and evaluation of clinical effect. Gold immunochromatographic strip(GICS) assay is a rapid, simple, low-costs, and on-site technology. Quantitative detection of GICS has advantage over the traditional qualitative or semi-quantitative strip assay. In this paper, we developed a novel quantitative detection method for GICS based on smart-phone. First, smart-phone was used to acquire GICS image...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28980317/systematic-review-and-meta-analysis-of-the-effect-of-bipolar-electrocoagulation-during-laparoscopic-ovarian-endometrioma-stripping-on-ovarian-reserve
#11
REVIEW
Paula Deckers, Sérgio Conti Ribeiro, Ricardo Dos Santos Simões, Camila Barião da Fonseca Miyahara, Edmund Chada Baracat
BACKGROUND: Laparoscopic stripping is the gold-standard treatment for ovarian endometriosis. The choice of hemostasis method might affect ovarian reserve. OBJECTIVES: To determine whether bipolar electrocoagulation is more detrimental to ovarian reserve than non-thermal hemostasis methods. SEARCH STRATEGY: Entry terms associated with the MeSH terms "endometrioma," "laparoscopy," and "ovarian reserve" were used to search databases for articles published up to April 3, 2017, in English, Spanish, Portuguese, French, and Italian...
January 2018: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28975020/a-case-of-neuroendocrine-carcinoma-developing-from-the-broad-ligament-of-the-uterus
#12
Yui Itonaga, Masakazu Nishida, Harunobu Matsumoto, Kaei Nasu, Hisashi Narahara
Neuroendocrine carcinoma (NEC), also called small cell carcinoma or large cell carcinoma, is a rare and aggressive tumor that develops mainly in the lung and intestine. More rarely, NEC develops in gynecologic organs, with poor prognoses. We experienced a case of NEC in the broad ligament of the uterus. The patient was a 74-year-old woman with symptoms of abdominal distension and constipation. Ultrasound sonography detected an abdominal tumor larger than 10 cm. She was then admitted to our hospital. She underwent surgery under the diagnosis of ovarian cancer, but the bilateral ovaries and uterus were normal in appearance, and a tumor was developing instead from the broad ligament of the uterus...
July 3, 2017: Rare Tumors
https://www.readbyqxmd.com/read/28882968/rectosigmoidian-involvement-in-advanced-stage-ovarian-cancer-intraoperative-decisions
#13
Nicolae Bacalbasa, Irina Balescu, Simona Dima
BACKGROUND/AIM: Ovarian cancer remains one of the most commonly encountered malignancies affecting women worldwide, that is unfortunately commonly diagnosed in advanced stages of the disease. In these stages, the tumoral process usually involves the surrounding viscera throughout contiguity or induces the apparition of distant metastases via peritoneal, lymphatic or hematogenous spread, multiple resections being needed in order to achieve a good control of the disease. PATIENTS AND METHODS: In the present study, we present a case series of 12 patients in whom various surgical procedures on the rectosigmoidian loop were performed in order to achieve debulking surgery to no residual disease...
September 2017: In Vivo
https://www.readbyqxmd.com/read/28818586/a-rare-presentation-of-the-syndrome-of-inappropriate-antidiuretic-hormone-in-a-12-year-old-female-as-the-initial-presentation-of-an-immature-ovarian-teratoma
#14
Anoop Mohamed Iqbal, W Frederick Schwenk
BACKGROUND: Immature ovarian teratoma is very rare in childhood. We are reporting 12 yo female with immature ovarian teratoma who presented initially with syndrome of inappropriate antidiuretic hormone. CASE: A 12 yo female presented with acute abdomen and distention. Initial laboratory tests showed hyponatremia (sodium -123 mmol/L), that did not respond to fluid management. Computerized tomography showed a 15 cm x 9 cm x 20 cm mass in the right ovary with multifocal internal fat, and dystrophic calcifications...
August 14, 2017: Journal of Pediatric and Adolescent Gynecology
https://www.readbyqxmd.com/read/28720378/a-novel-technique-carbon-dioxide-gas-assisted-total-peritonectomy-diaphragm-and-intestinal-meso-stripping-in-open-surgery-for-advanced-ovarian-cancer-%C3%A3-ukurova-technique
#15
Ghanim Khatib, Ahmet Baris Guzel, Umran Kucukgoz Gulec, Mehmet Ali Vardar
OBJECTIVE: Most of the ovarian cancers are diagnosed at advanced stages. As peritoneal carcinomatosis increases, especially when it extends to the diaphragm and intestinal mesos, probability of obtaining complete cytoreduction is reduced. Complete cytoreduction (residue zero: R0) is one of the main factors affecting survival [1-3]. Here we present a novel technique of stripping the peritoneal surfaces as a part of cytoreductive surgery in such cases. METHODS: A 55year-old woman diagnosed with peritoneal carcinomatosis was considered appropriate for primary cytoreduction after assessment of her thorax-abdominopelvic tomography, which revealed resectable intra-abdominal disease...
September 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28711355/characterization-of-the-foxl2-proximal-promoter-and-coding-sequence-from-the-common-snapping-turtle-chelydra-serpentina
#16
Lei Guo, Turk Rhen
Sex is determined by temperature during embryogenesis in snapping turtles, Chelydra serpentina. Previous studies in this species show that dihydrotestosterone (DHT) induces ovarian development at temperatures that normally produce males or mixed sex ratios. The feminizing effect of DHT is associated with increased expression of FoxL2, suggesting that androgens regulate transcription of FoxL2. To test this hypothesis, we cloned the proximal promoter (1.6kb) and coding sequence for snapping turtle FoxL2 (tFoxL2) in frame with mCherry to produce a fluorescent reporter...
July 12, 2017: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/28574993/weigh-the-pros-and-cons-to-ovarian-reserve-before-stripping-ovarian-endometriomas-prior-to-ivf-icsi-a-meta-analysis
#17
Xin Tao, Lei Chen, Shuqi Ge, Lisi Cai
PURPOSE: To explore the effects of conservative surgery for endometriomas on ovarian responsiveness during assisted reproductive technology (ART) and provide reproductive and gynecological doctors with a more reliable reference program for the treatment of endometriomas. METHODS: A literature search was performed by searching the PubMed, Embase, Cochrane Library, Web of Science and Science Direct databases. Studies with inter- and intra-patient comparisons of ovarian responses and oocyte quality between operated and unoperated ovaries and that met the inclusion criteria were retrieved, and the data from the outcome measures were extracted and pooled for this meta-analysis...
2017: PloS One
https://www.readbyqxmd.com/read/28486360/ovarian-mucinous-cystadenoma-after-ovarian-graft
#18
Carole Fajau-Prevot, Yann Tanguy Le Gac, Christine Chevreau, Clémentine Cohade, Nicolas Gatimel, Jean Parinaud, Roger Leandri
BACKGROUND: Freezing strips of ovarian cortex before chemotherapy followed by transplantation is an experimental method to preserve fertility for reproductive-aged women with cancer. We report a case of a cancer patient who developed a mucinous cystadenoma in a grafted piece of ovarian cortex. CASE: A 32-year-old woman with a Ewing sarcoma had ovarian cryopreservation using cortical strip freezing before receiving chemotherapy. Five years later she had no ovarian function, and the strips were thawed and grafted back onto the ovary...
June 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28421599/surgery-versus-conservative-management-of-endometriomas-in-subfertile-women-a-systematic-review
#19
REVIEW
Jacob Brink Laursen, Jeppe B Schroll, Kirsten T Macklon, Martin Rudnicki
INTRODUCTION: Endometriomas are present in up to 44% of all women with endometriosis and have a detrimental effect on fertility. However, it is controversial whether endometriomas should be surgically removed before assisted reproduction technology. Our purpose was to evaluate whether surgical stripping of endometriomas in subfertile women improves the chance of a live birth. Secondary outcomes were impact on ovarian reserve and pain. MATERIAL AND METHODS: We conducted a systematic review and meta-analysis with results reported in accordance to the PRISMA guidelines...
June 2017: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/28272468/accuracy-and-safety-verification-of-ovarian-reserve-assessment-technique-for-ovarian-tissue-transplantation-using-optical-coherence-tomography-in-mice-ovary
#20
Seido Takae, Kosuke Tsukada, Yorino Sato, Naoki Okamoto, Tai Kawahara, Nao Suzuki
Except for histological study, there are currently no suitable techniques available for the detection and identification of primordial follicles in ovary of primary ovarian insufficiency patients who have undetectable AMH levels. Also, the ability to locate and quantify follicles on ovarian cortex strips, without fixation, is valuable for patients who could undergo subsequent successful ovarian tissue transplantation. Although optical coherence tomography (OCT) is a well-established high resolution imaging technique without fixation commonly applied in biomedicine, few reports are available on ovarian tissue imaging...
March 8, 2017: Scientific Reports
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