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https://www.readbyqxmd.com/read/28938748/random-start-ovarian-stimulation-for-fertility-preservation-appears-unlikely-to-delay-initiation-of-neoadjuvant-chemotherapy-for-breast-cancer
#1
Joseph M Letourneau, Nikita Sinha, Kaitlyn Wald, Eve Harris, Molly Quinn, Tal Imbar, Evelyn Mok-Lin, A Jo Chien, Mitchell Rosen
STUDY QUESTION: Is random start ovarian stimulation associated with delays in initiation of neoadjuvant chemotherapy for breast cancer? SUMMARY ANSWER: Among women who complete fertility preservation (FP) consultation, random start ovarian stimulation is unlikely to delay time to initiation of neoadjuvant chemotherapy start. WHAT IS KNOWN ALREADY: Neoadjuvant chemotherapy is now a widely accepted treatment modality for operable breast cancer and random start ovarian stimulation is an increasingly-utilized modality for FP...
October 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28938739/sequence-variants-of-khdrbs1-as-high-penetrance-susceptibility-risks-for-primary-ovarian-insufficiency-by-mis-regulating-mrna-alternative-splicing
#2
Binbin Wang, Lin Li, Ying Zhu, Wei Zhang, Xi Wang, Beili Chen, Tengyan Li, Hong Pan, Jing Wang, Kehkooi Kee, Yunxia Cao
STUDY QUESTION: Does a novel heterozygous KHDRBS1 variant, identified using whole-exome sequencing (WES) in two patients with primary ovarian insufficiency (POI) in a pedigree, cause defects in mRNA alternative splicing? SUMMARY ANSWER: The heterozygous variant of KHDRBS1 was confirmed to cause defects in alternative splicing of many genes involved in DNA replication and repair. WHAT IS KNOWN ALREADY: Studies in mice revealed that Khdrbs1 deficient females are subfertile, which manifests as delayed sexual maturity and significantly reduced numbers of secondary and pre-antral follicles...
October 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28938736/deep-sequencing-shows-that-oocytes-are-not-prone-to-accumulate-mtdna-heteroplasmic-mutations-during-ovarian-ageing
#3
L Boucret, C Bris, V Seegers, D Goudenège, V Desquiret-Dumas, M Domin-Bernhard, V Ferré-L'Hotellier, P E Bouet, P Descamps, P Reynier, V Procaccio, P May-Panloup
STUDY QUESTION: Does ovarian ageing increase the number of heteroplasmic mitochondrial DNA (mtDNA) point mutations in oocytes? SUMMARY ANSWER: Our results suggest that oocytes are not subject to the accumulation of mtDNA point mutations during ovarian ageing. WHAT IS KNOWN ALREADY: Ageing is associated with the alteration of mtDNA integrity in various tissues. Primary oocytes, present in the ovary since embryonic life, may accumulate mtDNA mutations during the process of ovarian ageing...
October 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28938728/modeling-of-live-birth-rates-and-cost-effectiveness-of-oocyte-cryopreservation-for-cancer-patients-prior-to-high-and-low-risk-gonadotoxic-chemotherapy
#4
B Lyttle Schumacher, N Grover, T Mesen, A Steiner, J Mersereau
STUDY QUESTION: What is the live-birth rate (LBR) and cost-effectiveness of fertility preservation with oocyte cryopreservation (FP-OC) compared to expectant management in cancer patients age 25-40 based on estimated gonadotoxicity of treatments 5 years after cancer diagnosis? SUMMARY ANSWER: Oocyte cryopreservation prior to cancer treatment is more costly, yet more effective (producing more live births), than not undergoing oocyte cryopreservation but it is most beneficial for patients undergoing high-risk chemotherapy (HRC)...
October 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28938695/ovarian-preservation-improves-overall-survival-in-young-patients-with-early-stage-endometrial-cancer
#5
REVIEW
Peng Jia, Yan Zhang
We searched Medline, Embase, Cochrane library, the Chinese Biomedicine Literature Database, the Chinese Scientific Journal Full-text Database, the Chinese Journal Full-text Database, and the Wanfang Database to collect observational studies on the effects of ovary-saving surgery in comparison to bilateral salpingo-oophorectomy (BSO) in young patients with early-stage endometrial cancer (EC). The literature search included studies up to March 2017, and 10 retrospective cohort studies met our selection criteria...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938689/efficacy-and-safety-of-traditional-chemotherapies-for-patients-with-ovarian-neoplasm-a-network-meta-analysis
#6
REVIEW
Lili Yang, Gongliang Guo, Liqun Sun, Chenhao Li, Haipeng Zhang
BACKGROUND: Ovarian neoplasm is a kind of high risky cancer among female. This paper assessed the efficacy and safety of twelve therapies and figured out the superior chemotherapeutic drug for ovarian cancer through network meta-analysis (NMA). METHOD: Eligible randomized controlled trials (RCTs) were retrieved from electronic databases. Primary outcomes concerning efficacy, overall survival (OS) and progression-free survival (PFS), were presented as hazard ratio (HR) and the associated 95% credible interval(CrI), while outcomes concerning safety were assessed by odds ratio (OR) and the corresponding 95% CrI...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938680/ct-guided-125-i-brachytherapy-for-recurrent-ovarian-cancer
#7
Ping Liu, Lina Tong, Bin Huo, Dong Dai, Wenxin Liu, Ke Wang, Ying Wang, Zhi Guo, Hong Ni
This retrospective study was to evaluate the local control and survival of (125)I brachytherapy for recurrent ovarian cancer. 52 (125)I brachytherapy procedures were performed in 47 patients with 51 recurrent ovarian cancer lesions. The follow-up period was 1-55 months (median 12 months). The local control rate (LC) of 3, 6, 12, 24 and 36 months was 93.3%, 77.7%, 58.9%, 38.7% and 19.3%, respectively. Patients with tumor size ≤ 4cm (85.7% vs 40.0%, P = 0.037) and actual D90 between 110 to 130Gy (47.4% vs 66...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938652/correlation-between-apparent-diffusion-coefficient-adc-and-cellularity-is-different-in-several-tumors-a-meta-analysis
#8
Alexey Surov, Hans Jonas Meyer, Andreas Wienke
The purpose of this meta-analysis was to provide clinical evidence regarding relationship between ADC and cellularity in different tumors based on large patient data. Medline library was screened for associations between ADC and cell count in different tumors up to September 2016. Only publications in English were extracted. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement (PRISMA) was used for the research. Overall, 39 publications with 1530 patients were included into the analysis...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938623/mifepristone-inhibits-ovarian-cancer-metastasis-by-intervening-in-sdf-1-cxcr4-chemokine-axis
#9
Ning Zheng, Jiahang Chen, Weiqun Liu, Jian Liu, Tao Li, Hongning Chen, Jichuang Wang, Lee Jia
SDF-1/CXCR4 signaling axis determines the proliferative potential and site-specific cancer metastasis. Recent studies suggest involvement of the axis and steroidal hormone in ovarian cancer metastasis. Here we hypothesize that mifepristone (RU486), a well-known progesterone-based abortifacient, might interfere this axis and inhibit ovarian cancer metastasis. Mifepristone at concentrations < IC50 inhibited expression of CXCR4 on cell surface of ovarian cancer SKOV-3 and IGROV-1, and reduced expression of the intracellular CXCR4 protein and its related mRNA activated by SDF-1...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938604/inflammation-and-stem-markers-association-to-pim1-pim2-kinase-induced-tumors-in-breast-and-uterus
#10
Manuel-Pedro Jiménez-García, Antonio Lucena-Cacace, María-José Robles-Frías, Irene Ferrer, Maja Narlik-Grassow, Carmen Blanco-Aparicio, Amancio Carnero
The PIM family of Ser/Thr kinase proteins has been implicated in tumorigenesis at different levels. PIM proteins are overexpressed in several tumor types and have been associated with chemoresistance. However, their role in hormone-dependent female tissues has not been explored, especially in the uterus, breast and ovary. We generated conditional transgenic mice with confined expression of human PIM1 or PIM2 genes in these tissues. We characterized the tumoral response to these genetic alterations corroborating their role as oncogenes since they induce hyperproliferation in all tissues and tumors in mammary gland and uterus...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938571/preclinical-study-of-cc223-as-a-potential-anti-ovarian-cancer-agent
#11
Zhenzhen Jin, Huanfu Niu, Xuenan Wang, Lei Zhang, Qin Wang, Aijun Yang
Aberrant activation of mTOR contributes to ovarian cancer progression. CC223 is a novel and potent mTOR kinase inhibitor. The current study tested its activity against human ovarian cancer cells. We showed that CC223, at nM concentrations, inhibited survival and proliferation of established/primary human ovarian cancer cells. Further, significant apoptosis activation was observed in CC223-treated ovarian cancer cells. CC223 disrupted assembly of mTOR complex 1 (mTORC1) and mTORC2 in SKOV3 cells. Meanwhile, activation of mTORC1 and mTORC2 was almost completely blocked by CC223...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938492/a-long-noncoding-rna-lncrna-amhr2-plays-a-role-in-amhr2-gene-activation-in-mouse-ovarian-granulosa-cells
#12
Atsushi P Kimura, Ryoma Yoneda, Misuzu Kurihara, Shota Mayama, Shin Matsubara
Anti-Müllerian hormone (AMH) is critical to the regression of Müllerian ducts during mammalian male differentiation and targets ovarian granulosa cells and testicular Sertoli and Leydig cells of adults. Specific effects of AMH are exerted via its receptor, AMH type II receptor (Amhr2), but the mechanism by which the Amhr2 gene is specifically activated is not fully understood. To see whether a proximal promoter was sufficient to Amhr2 gene activation, we generated transgenic mice that bore the enhanced green fluorescent protein (EGFP) gene driven by a 500-bp mouse Amhr2 gene promoter...
September 14, 2017: Endocrinology
https://www.readbyqxmd.com/read/28938488/ovarian-aging-in-women-with-brca-germline-mutations
#13
Wayne Lin, Shiny Titus, Fred Moy, Elizabeth S Ginsburg, Kutluk Oktay
Context: Recent clinical and laboratory studies suggested that women with BRCA mutations have lower ovarian reserve and their primordial follicle oocytes may be more prone to DNA damage but the direct proof is lacking. Objective: To determine whether women with germline BRCA mutations have reduced primordial follicle reserve and increased oocyte DNA damage. Design: A laboratory comparative study of ovarian tissue obtained from the risk-reducing salpingo- oophorectomy (RRSO) samples of unaffected BRCA mutation carrier (BMC) women vs...
August 16, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28938467/testis-determination-requires-a-specific-fgfr2-isoform-to-repress-foxl2
#14
Stefan Bagheri-Fam, Anthony D Bird, Liang Zhao, Janelle M Ryan, Meiyun Yong, Dagmar Wilhelm, Peter Koopman, Jacob V Eswarakumar, Vincent R Harley
Male sex determination in mammals relies on SRY-mediated up-regulation of SOX9 expression in XY gonads, whereas WNT/RSPO signalling and FOXL2 drive female sex determination in XX gonads. FGF9-signalling ensures sustained SOX9 expression through repression of one of the ovarian pathways (WNT signalling), while the significance of FGF-mediated repression of the FOXL2 pathway has not been studied. Previously, we demonstrated that FGFR2 is the receptor for FGF9 in the XY gonad. Whether a specific isoform (FGFR2b or FGFR2c) is required was puzzling...
September 11, 2017: Endocrinology
https://www.readbyqxmd.com/read/28938432/mitochondrial-function-regulated-by-mitoguardin-1-2-is-crucial-for-ovarian-endocrine-functions-and-ovulation
#15
Xiao-Man Liu, Yin-Li Zhang, Shu-Yan Ji, Long-Wen Zhao, Wei-Na Shang, Dali Li, Zijiang Chen, Chao Tong, Heng-Yu Fan
The balances of mitochondrial dynamic changes, mitochondrial morphology, and mitochondrial number are critical in cell metabolism. Once disturbed, disorders in these processes generally cause diseases or even death in animals. We performed large-scale genetic screenings in fruit flies and discovered the new gene mitoguardin (miga) that encodes for a mitochondrial outer membrane protein. In order to examine the physiological functions of its mammalian homologs Miga1 and 2, we generated Miga1 and Miga2 single- and double-knockout mouse strains and found that the knockout mice were viable, but the females were subfertile...
August 23, 2017: Endocrinology
https://www.readbyqxmd.com/read/28938409/letter-to-the-editor-type-b-insulin-resistance-masquerading-as-ovarian-hyperthecosis
#16
Ricardo Azziz
No abstract text is available yet for this article.
August 14, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28938399/gonadotropin-dependent-neuregulin-1-signaling-regulates-female-rat-ovarian-granulosa-cell-survival
#17
Indrajit Chowdhury, Alicia Branch, Sharifeh Mehrabi, Byron D Ford, Winston E Thompson
Mammalian ovarian follicular development and maturation of an oocyte competent to fertilize and develop into an embryo depends on tightly regulated spatiotemporally orchestrated crosstalk between cell death, survival and differentiation signals through extra- and intra-ovarian signals, as well as on a permissive ovarian follicular microenvironment. Neuregulin-1 (NRG1) is a member of the EGF-like factor family that mediates its effects by binding to the member of the ErbB family. Our experimental results suggest that gonadotropins promote differential expression of NRG1 and erbB receptors in granulosa cells (GCs), and NRG1 in theca cells during follicular development, and promote NRG1 secretions in the follicular fluid (FF) of rat ovaries...
August 14, 2017: Endocrinology
https://www.readbyqxmd.com/read/28938064/re-clomiphene-citrate-and-letrozole-to-reduce-follicle-stimulating-hormone-consumption-during-ovarian-stimulation-systematic-review-and-meta-analysis-t-n-bechtejew-m-n-nadai-c-o-nastri-and-w-p-martins-ultrasound-obstet-gynecol-2017-50-315-323
#18
https://www.readbyqxmd.com/read/28937943/multiomics-analysis-of-tumor-microenvironment-reveals-gata2-and-mirna-124-3p-as-potential-novel-biomarkers-in-ovarian-cancer
#19
Esra Gov, Medi Kori, Kazim Yalcin Arga
Ovarian cancer is a common and, yet, one of the most deadly human cancers due to its insidious onset and the current lack of robust early diagnostic tests. Tumors are complex tissues comprised of not only malignant cells but also genetically stable stromal cells. Understanding the molecular mechanisms behind epithelial-stromal crosstalk in ovarian cancer is a great challenge in particular. In the present study, we performed comparative analyses of transcriptome data from laser microdissected epithelial, stromal, and ovarian tumor tissues, and identified common and tissue-specific reporter biomolecules-genes, receptors, membrane proteins, transcription factors (TFs), microRNAs (miRNAs), and metabolites-by integration of transcriptome data with genome-scale biomolecular networks...
September 22, 2017: Omics: a Journal of Integrative Biology
https://www.readbyqxmd.com/read/28937681/primary-t-cells-for-mrna-mediated-immunotoxin-delivery
#20
R Eggers, A Philippi, M O Altmeyer, F Breinig, M J Schmitt
Immune cells become increasingly attractive as delivery system for immunotoxins in cancer therapy in order to reduce the intrinsic toxicity and severe side effects of chimeric protein toxins. In this study, we investigated the potential of human primary T cells to deliver a secreted immunotoxin through transient mRNA transfection. The chimeric protein toxin was directed towards the neovasculature of cancer cells by fusing a truncated version of Pseudomonas exotoxin A (PE38) to human vascular endothelial growth factor (VEGF) and to the single chain variable fragment (scFv) of anti-Her2/neu...
September 22, 2017: Gene Therapy
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