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Ovarian ablation

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https://www.readbyqxmd.com/read/28460674/effect-of-extending-fsh-treatment-on-superovulation-and-embryo-production-in-wood-bison-bison-bison-athabascae
#1
J Manuel Palomino, Miriam P Cervantes, Reuben J Mapletoft, Murray R Woodbury, Gregg P Adams
The effect of extending the length of the FSH treatment protocol on superovulatory response and embryo production was investigated in wood bison during the anovulatory and ovulatory seasons. In Experiment 1 (anovulatory season), follicular wave emergence was synchronized by follicular ablation (Day -1) and bison were assigned randomly to two groups (n = 14/group) and given 200 mg FSH on Day 0 and Day 2 (non-extended group), or 133 mg FSH on Days 0, 2, and 4 (extended group). Human chorionic gonadotropin (hCG; 3000 IU) was given on Day 5 and Day 6 in the non-extended and extended groups, respectively, and bison were inseminated 12 and 24 h later...
June 2017: Theriogenology
https://www.readbyqxmd.com/read/28405494/overcoming-resistance-to-her2-targeted-therapy-with-a-novel-her2-cd3-bispecific-antibody
#2
Andres Lopez-Albaitero, Hong Xu, Hongfen Guo, Linlin Wang, Zhihao Wu, Hoa Tran, Sarat Chandarlapaty, Maurizio Scaltriti, Yelena Janjigian, Elisa de Stanchina, Nai-Kong V Cheung
T-cell-based therapies have emerged as one of the most clinically effective ways to target solid and non-solid tumors. HER2 is responsible for the oncogenesis and treatment resistance of several human solid tumors. As a member of the HER family of tyrosine kinase receptors, its over-activity confers unfavorable clinical outcome. Targeted therapies directed at this receptor have achieved responses, although development of resistance is common. We explored a novel HER2/CD3 bispecific antibody (HER2-BsAb) platform that while preserving the anti-proliferative effects of trastuzumab, it recruits and activates non-specific circulating T-cells, promoting T cell tumor infiltration and ablating HER2(+) tumors, even when these are resistant to standard HER2-targeted therapies...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28400616/granulosa-cell-endothelin-2-expression-is-fundamental-for-ovulatory-follicle-rupture
#3
Joseph A Cacioppo, Po-Ching Patrick Lin, Patrick R Hannon, Daniel R McDougle, Arnon Gal, CheMyong Ko
Ovulation is dependent upon numerous factors mediating follicular growth, vascularization, and ultimately oocyte release via follicle rupture. Endothelin-2 (EDN2) is a potent vasoconstrictor that is transiently produced prior to follicle rupture by granulosa cells of periovulatory follicles and induces ovarian contraction. To determine the role of Edn2 expression, surgical transplant and novel conditional knockout mice were super-ovulated and analyzed. Conditional knockout mice utilized a new iCre driven by the Esr2 promoter to selectively remove Edn2...
April 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28389047/effects-of-ecg-and-progesterone-on-superovulation-and-embryo-production-in-wood-bison-bison-bison-athabascae
#4
J Manuel Palomino, Miriam P Cervantes, Murray R Woodbury, Reuben J Mapletoft, Gregg P Adams
Experiments were done to determine if inclusion of eCG and progesterone in the superstimulation protocol will increase the ovarian response and embryo production in wood bison, and to provide preliminary information regarding the effect of season. In Experiment 1 (anovulatory season), bison (n=26) were synchronized by follicular ablation (Day -1) and given FSH on Days 0 and 2, and assigned to 3 groups: Progesterone (Days 0-4), eCG (Day 3), or progesterone+eCG. On Day 5, bison were given hCG and inseminated 12 and 24h later...
March 29, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28360101/phospholipase-c-related-but-catalytically-inactive-proteins-regulate-ovarian-follicle-development
#5
Miho Matsuda, Masato Hirata
Phospholipase C-related but catalytically inactive proteins PRIP-1 and -2 are inositol-1,4,5-trisphosphate binding proteins that are encoded by independent genes. Ablation of the Prip genes in mice impairs female fertility, which is manifested by fewer pregnancies, a decreased number of pups, and the decreased and increased secretion of gonadal steroids and gonadotropins, respectively. We investigated the involvement of the PRIPs in fertility, focusing on the ovaries of Prip-1 and -2 double-knock-out (DKO) mice...
May 19, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28356008/the-evolutionary-tale-and-future-directions-of-aromatase-inhibitors-in-breast-carcinoma
#6
Dipanjan Bhattacharjee, Meena K Kumari, S Avin, Mohan V Babu Amberkar
Aromatase inhibitors have often been likened to that of 'medical scalpels' for the treatment of breast carcinoma. By inhibiting the singular step of aromatisation, they have proven to be extremely effective allies in the treatment of breast cancer among postmenopausal women. However, their relevance soon may not be limited to the post-menopausal age group alone. Recent studies have hinted at their utility amongst the pre-menopausal women; combined with ovarian ablation techniques, aromatase inhibitors may prove to be equally effective and more, as compared to tamoxifen in this age-group...
March 27, 2017: Anti-cancer Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/28288389/ovarian-ablation-for-premenopausal-breast-cancer-a-review-of-treatment-considerations-and-the-impact-of-premature-menopause
#7
REVIEW
Melica Nourmoussavi, Gary Pansegrau, Jason Popesku, Geoffrey L Hammond, Janice S Kwon, Mark S Carey
Historically, ovarian ablation (OA) was used as therapy for women with recurrent hormone-receptor-positive (HRP) premenopausal breast cancer. With the publication of the SOFT (Suppression of Ovarian Function Trial) and TEXT (Tamoxifen and Exemestane Trial) randomized trials, there is considerable interest in OA as an adjuvant treatment, either in combination with tamoxifen or an aromatase inhibitor (AI). Thus, we have reviewed current guidelines and key studies on this important topic and have highlighted the relevant biological and pharmacological aspects of the various endocrine therapies...
April 2017: Cancer Treatment Reviews
https://www.readbyqxmd.com/read/28278050/suppression-of-the-grainyhead-transcription-factor-2-gene-grhl2-inhibits-the-proliferation-migration-invasion-and-mediates-cell-cycle-arrest-of-ovarian-cancer-cells
#8
Adnen Faddaoui, Razan Sheta, Magdalena Bachvarova, Marie Plante, Jean Gregoire, Marie-Claude Renaud, Alexandra Sebastianelli, Stephane Gobeil, Chantale Morin, Karim Ghani, Dimcho Bachvarov
Previously, we have identified the Grainyhead transcription factor 2 gene (GRHL2) as notably hypomethylated in high-grade (HG) serous epithelial ovarian tumors, compared with normal ovarian tissues. GRHL2 is known for its functions in normal tissue development and wound healing. In the context of cancer, the role of GRHL2 is still ambiguous as both tumorigenic and tumor suppressive functions have been reported for this gene, although a role of GRHL2 in maintaining the epithelial status of cancer cells has been suggested...
April 3, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28275010/epithelial-and-non-epithelial-ptch1-play-opposing-roles-to-regulate-proliferation-and-morphogenesis-of-the-mouse-mammary-gland
#9
Teresa Monkkonen, John D Landua, Adriana P Visbal, Michael T Lewis
Patched 1 (Ptch1) has epithelial, stromal and systemic roles in murine mammary gland organogenesis, yet specific functions remain undefined. Cre-recombinase-mediated Ptch1 ablation in mammary epithelium increased proliferation and branching, but did not phenocopy transgenic expression of activated smoothened (SmoM2). The epithelium showed no evidence of canonical hedgehog signaling, and hyperproliferation was not blocked by smoothened (SMO) inhibition, suggesting a non-canonical function of PTCH1. Consistent with this possibility, nuclear localization of cyclin B1 was increased...
April 1, 2017: Development
https://www.readbyqxmd.com/read/28238683/endothelial-notch1-activity-facilitates-metastasis
#10
Elfriede Wieland, Juan Rodriguez-Vita, Sven S Liebler, Carolin Mogler, Iris Moll, Stefanie E Herberich, Elisa Espinet, Esther Herpel, Amitai Menuchin, Jenny Chang-Claude, Michael Hoffmeister, Christoffer Gebhardt, Hermann Brenner, Andreas Trumpp, Christian W Siebel, Markus Hecker, Jochen Utikal, David Sprinzak, Andreas Fischer
Endothelial cells (ECs) provide angiocrine factors orchestrating tumor progression. Here, we show that activated Notch1 receptors (N1ICD) are frequently observed in ECs of human carcinomas and melanoma, and in ECs of the pre-metastatic niche in mice. EC N1ICD expression in melanoma correlated with shorter progression-free survival. Sustained N1ICD activity induced EC senescence, expression of chemokines and the adhesion molecule VCAM1. This promoted neutrophil infiltration, tumor cell (TC) adhesion to the endothelium, intravasation, lung colonization, and postsurgical metastasis...
March 13, 2017: Cancer Cell
https://www.readbyqxmd.com/read/28197366/compensatory-upregulation-of-pd-1-lag-3-and-ctla-4-limits-the-efficacy-of-single-agent-checkpoint-blockade-in-metastatic-ovarian-cancer
#11
Ruea-Yea Huang, Ariel Francois, Aj Robert McGray, Anthony Miliotto, Kunle Odunsi
Tumor-associated or -infiltrating lymphocytes (TALs or TILs) co-express multiple immune inhibitory receptors that contribute to immune suppression in the ovarian tumor microenvironment (TME). Dual blockade of PD-1 along with LAG-3 or CTLA-4 has been shown to synergistically enhance T-cell effector function, resulting in a delay in murine ovarian tumor growth. However, the mechanisms underlying this synergy and the relative contribution of other inhibitory receptors to immune suppression in the ovarian TME are unknown...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28186620/an-update-on-the-diagnosis-surgical-management-and-fertility-outcomes-for-women-with-endometrioma
#12
REVIEW
Ryan Cranney, George Condous, Shannon Reid
Endometriosis is estimated to affect up to 50% of infertile women, and severity of endometriosis stage appears to correlate with reduced fertility. Ovarian endometriomas are found in up to 44% of women with endometriosis, and are significantly associated with the presence of pelvic deep infiltrating endometriosis, ovarian adhesions, and pouch of Douglas obliteration. Through the use of MEDLINE and PubMed databases, we conducted a literature review of all available research related to the diagnosis, surgical management and fertility outcomes for women with endometrioma...
February 10, 2017: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/28184002/renal-cell-carcinoma-metastasis-involving-vertebral-hemangioma-dual-percutaneous-treatment-by-navigational-bipolar-radiofrequency-ablation-and-high-viscosity-cement-vertebroplasty
#13
Jean-Baptiste Zerlauth, Reto Meuli, Vincent Dunet
The case of a 70-year-old woman with progressive renal cell carcinoma (RCC) metastatic invasion of a L3 vertebral hemangioma treated by dual percutaneous radiofrequency ablation (RFA) and vertebroplasty is reported. The patient was surgically treated for RCC in 2001. Chemotherapy and immunotherapy were introduced in 2013 for ovarian, bladder and cerebral metastatic disease. An asymptomatic L3 benign hemangioma was noticed at this time. One-year CT and MRI follow-up studies demonstrated a nodular isolated soft tissue lesion involving the anterior edge of the hemangioma...
February 9, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28181120/comparison-of-three-superovulation-protocols-with-or-without-gnrh-treatment-at-the-time-of-artificial-insemination-on-ovarian-response-and-embryo-quality-in-thai-native-heifers
#14
Vibuntita Chankitisakul, Jakkhaphan Pitchayapipatkul, Phirawit Chuawongboon, Dumrongrak Rakwongrit, Denpong Sakhong, Wuttigrai Boonkum, Thevin Vongpralub
To optimize the superovulation protocol in Thai native cattle, the present research was designed to (1) compare three different protocols designed to induce superstimulation and (2) study the effect of gonadotropin-releasing hormone (GnRH) administration at insemination time (to induce ovulation) on ovarian follicular activities in terms of the number of large follicles, corpora lutea (CLs) and unovulated follicles, and the number and quality of ova/embryos recovered in Thai native heifers. Initially, the estrous cycles of animals (n = 36) at unknown stages were synchronized by two prostaglandin F2α (PGF2α) injections at an interval of 12 days...
March 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28154154/renal-cell-carcinoma-metastasis-involving-vertebral-hemangioma-dual-percutaneous-treatment-by-navigational-bipolar-radiofrequency-ablation-and-high-viscosity-cement-vertebroplasty
#15
Jean-Baptiste Zerlauth, Reto Meuli, Vincent Dunet
The case of a 70-year-old woman with progressive renal cell carcinoma (RCC) metastatic invasion of a L3 vertebral hemangioma treated by dual percutaneous radiofrequency ablation (RFA) and vertebroplasty is reported. The patient was surgically treated for RCC in 2001. Chemotherapy and immunotherapy were introduced in 2013 for ovarian, bladder and cerebral metastatic disease. An asymptomatic L3 benign hemangioma was noticed at this time. One-year CT and MRI follow-up studies demonstrated a nodular isolated soft tissue lesion involving the anterior edge of the hemangioma...
February 2, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28089684/the-impact-of-cystectomy-on-ovarian-reserve-a-review-of-the-literature
#16
REVIEW
Roa Alammari, Michelle Lightfoot, Hye-Chun Hur
Ovarian cysts are common in the reproductive age. Pathological cysts such as endometriomas and dermoids often require surgical intervention if symptomatic. Laparoscopic cystectomy is the first line treatment for these cysts, and is associated with better pain control and less recurrence than drainage or cyst ablation procedures. There has been an emerging concern about the effect of ovarian cystectomy on ovarian reserve with some evidence of short term and long term reduction in ovarian reserve. Certain cyst characteristics (endometrioma pathology, large cyst size, bilateral presentation) are associated with greater decline in ovarian reserve after cystectomy...
January 9, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28089574/does-preoperative-antim%C3%A3-llerian-hormone-level-influence-postoperative-pregnancy-rate-in-women-undergoing-surgery-for-severe-endometriosis
#17
Emanuela Stochino-Loi, Basma Darwish, Oana Mircea, Salma Touleimat, Jenny-Claude Millochau, Carole Abo, Stefano Angioni, Horace Roman
OBJECTIVE: To compare postoperative pregnancy rates as they relate to presurgery antimüllerian hormone (AMH) level in patients with stage 3 and 4 endometriosis. DESIGN: Retrospective comparative study using data prospectively recorded in the North-West Inter-Regional Female Cohort for Patients with Endometriosis (CIRENDO) database. SETTING: University tertiary referral center. PATIENT(S): One hundred eighty patients with stage 3 and 4 endometriosis and pregnancy intention, managed from June 2010 to March 2015, were divided into two groups according to their preoperative AMH levels: group A (AMH ≥2 ng/mL) and group B (AMH <2 ng/mL)...
March 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28077333/molecular-cloning-characterization-and-expression-analysis-of-two-juvenile-hormone-esterase-like-carboxylesterase-cdnas-in-chinese-mitten-crab-eriocheir-sinensis
#18
Yu Xu, Muzi Zhao, Yanfei Deng, Yuanjie Yang, Xuguang Li, Quanping Lu, Jiachun Ge, Jianlin Pan, Zhiqiang Xu
Precise regulation of methyl farnesoate (MF) titer is of prime importance throughout the crustacean life-cycle. Although the synthetic pathway of MF is well-documented, little is known about its degradation and recycling in crustaceans. Juvenile hormone esterase-like (JHE-like) carboxylesterase (CXE) is a key enzyme in MF degradation, thus playing a significant role in regulating the MF titer. We identified and characterized two cDNAs, Es-CXE1 and Es-CXE2, encoding JHE-like CXEs in Chinese mitten crab. Full-length cDNAs of Es-CXE1 and Es-CXE2 encode proteins composed of 584 and 597 amino acids, respectively, both of which contain a typical carboxylesterase domain...
March 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/28068959/pancreatic-neuroendocrine-tumor-with-metastasis-to-the-spleen-a-case-report
#19
Yasunaru Sakuma, Yoshikazu Yasuda, Naohiro Sata, Yoshinori Hosoya, Atsushi Shimizu, Hirofumi Fujii, Daisuke Matsubara, Noriyuki Fukushima, Atsushi Miki, Misato Maeno, Alan Kawarai Lefor
BACKGROUND: Long-term term survival in patients with pancreatic neuroendocrine tumors has been reported, even in patients with metastatic disease. Metastases to the spleen are extremely rare, but have been reported from a number of primary malignancies, such as breast cancer, lung cancer, melanoma and ovarian cancer. This is the first report of a splenic metastasis from a primary pancreatic neuroendocrine tumor. CASE PRESENTATION: The patient presented as a 53 years old white male with anemia and fatigue...
January 9, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28053622/role-of-ovarian-function-suppression-in-premenopausal-women-with-early-breast-cancer
#20
REVIEW
Woo-Chan Park
Historically, endocrine therapy for breast cancer began with ovarian ablation (OA) for the treatment of premenopausal patients. After the identification of estrogen receptors and the development of many antiestrogens, tamoxifen has been approved and used as the standard endocrine therapy for hormonal receptor (HR)-positive premenopausal patients to date. With the development of luteinizing hormone-releasing hormone agonists, the paradigm of endocrine therapy for premenopausal women with HR-positive breast cancer began to change from OA to ovarian function suppression (OFS)...
December 2016: Journal of Breast Cancer
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