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https://www.readbyqxmd.com/read/29457629/antibody-glycoengineering-strategies-in-mammalian-cells
#1
Qiong Wang, Cheng-Yu Chung, Sandra Chough, Michael J Betenbaugh
As a key parameter impacting functional and structural heterogeneity, protein glycosylation is a critical quality attribute for antibody biotherapeutic manufacturing. The glycan patterns on recombinant antibodies, particularly on the conserved fragment crystallizable (Fc) region, can have significant effects on an antibody's functional activities including clearance rate, antibody-dependent cellular cytotoxicity (ADCC), complement-dependent cytotoxicity (CDC) and anti-inflammatory activity. In this review, we examined specific glycan attachments (fucosylation, sialylation, galactosylation, oligo-mannose and bisecting glycans) and their importance to antibody properties...
February 19, 2018: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/29452791/untapped-reserves-controlling-primordial-follicle-growth-activation
#2
REVIEW
Amanda Kallen, Alex J Polotsky, Joshua Johnson
Even with the benefit of assisted reproductive technologies (ART), many women are unable to conceive and deliver healthy offspring. One common cause of infertility is the inability to produce eggs capable of contributing to live birth. This can occur despite standard-of-care treatment to maximize the recovery of eggs from growing ovarian follicles. Dormant primordial follicles in the human ovary are a 'reserve ' that can be exploited clinically to overcome this problem. We discuss how controlling primordial follicle growth activation (PFGA) can produce increased numbers of high-quality eggs available for fertility treatment(s)...
February 13, 2018: Trends in Molecular Medicine
https://www.readbyqxmd.com/read/29450960/effect-of-flower-orientation-on-the-male-and-female-traits-of-myrtillocactus-geometrizans-cactaceae
#3
Sandra A Aguilar-García, Dulce M Figueroa-Castro, Pedro L Valverde, F Vite
1.Intra-individual variation in the production and size of reproductive traits has been documented in columnar cacti, being higher in Equator-facing flowers. Such variation is attributed to the high amount of photosynthetic active radiation intercepted by stems oriented towards the Equator. Most studies focused on this phenomenon have documented the existence of intra-individual variation on traits associated with the female function; however, its impact on traits associated with the male function has been neglected...
February 16, 2018: Plant Biology
https://www.readbyqxmd.com/read/29447380/sirtuins-in-gamete-biology-and-reproductive-physiology-emerging-roles-and-therapeutic-potential-in-female-and-male-infertility
#4
Carla Tatone, Giovanna Di Emidio, Arcangelo Barbonetti, Gaspare Carta, Alberto M Luciano, Stefano Falone, Fernanda Amicarelli
BACKGROUND: Sirtuins (SIRT1-7) are a family of NAD+-dependent deacetylases that catalyze post-translational modifications of proteins. Together, they respond to metabolic challenges, inflammatory signals or hypoxic/oxidative stress, and are associated with aging and longevity. The role of Sirtuins in the regulation of fertility emerged in 2003 when a defective reproductive phenotype was observed in SIRT1-null mice. Although studies on Sirtuins in reproductive biology have been increasing in the last years, a recent comprehensive update on this issue is still lacking...
February 13, 2018: Human Reproduction Update
https://www.readbyqxmd.com/read/29438534/both-in-vivo-fsh-depletion-and-follicular-exposure-to-gonadotrophin-releasing-hormone-analogues-in-vitro-are-not-effective-to-prevent-follicular-depletion-during-chemotherapy-in-mice
#5
F Horicks, G Van Den Steen, C Gervy, H J Clarke, I Demeestere
STUDY QUESTION: Does fertility preservation using gonadotrophin-releasing hormone (GnRH) analogues during chemotherapy act through a direct effect on the ovary or through inhibition of FSH secretion? SUMMARY ANSWER: The absence of FSH in vivo and the direct exposition of ovarian follicles to GnRH analogues in vitro did not prevent chemotherapy-induced ovarian damage. WHAT IS KNOWN ALREADY: The potential mechanisms of action of GnRH analogues in protecting ovaries against chemotherapy damage remain poorly understood...
February 9, 2018: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29428311/impact-of-cancer-treatment-on-risk-of-infertility-and-diminished-ovarian-reserve-in-women-with-polycystic-ovary-syndrome
#6
Lisa M Shandley, Amy Fothergill, Jessica B Spencer, Ann C Mertens, Hanh N Cottrell, Penelope P Howards
OBJECTIVE: To compare markers of fertility and ovarian reserve between cancer survivors and cancer-free women with and without polycystic ovary syndrome (PCOS). DESIGN: Furthering Understanding of Cancer, Health, and Survivorship in Adult (FUCHSIA) Women's Study-a population-based cohort study. SETTING: Not applicable. PATIENT(S): Female cancer survivors (n = 1,090) aged 22-45 years, diagnosed between ages 20 and 35 years, and at least 2 years after diagnosis; 369 participated in a clinic visit...
February 7, 2018: Fertility and Sterility
https://www.readbyqxmd.com/read/29428308/differential-rate-in-decline-in-ovarian-reserve-markers-in-women-with-polycystic-ovary-syndrome-compared-with-control-subjects-results-of-a-longitudinal-study
#7
Asima K Ahmad, Chia-Ning Kao, Molly Quinn, Nikolaus Lenhart, Mitchell Rosen, Marcelle I Cedars, Heather Huddleston
OBJECTIVE: To estimate rates of ovarian aging in polycystic ovary syndrome (PCOS) subjects versus a community control population. DESIGN: Longitudinal. SETTING: Tertiary academic center. SUBJECT(S): PCOS subjects diagnosed according to the 2004 Rotterdam criteria were systematically enrolled in a PCOS cohort study. The comparison control subjects were from the Ovarian Aging study, a prospective longitudinal study of ovarian aging in healthy women with regular menstrual cycles...
February 7, 2018: Fertility and Sterility
https://www.readbyqxmd.com/read/29427449/butyrated-mannac-analog-improves-protein-expression-in-chinese-hamster-ovary-cells
#8
Bojiao Yin, Qiong Wang, Cheng-Yu Chung, Xiaozhi Ren, Rahul Bhattacharya, Kevin J Yarema, Michael J Betenbaugh
The chemical additive sodium butyrate (NaBu) has been applied in cell culture media as a direct and convenient method to increase the protein expression in Chinese hamster ovary (CHO) and other mammalian cells. In this study, we examined an alternative chemical additive, 1,3,4-O-Bu3 ManNAc, for its effect on recombinant protein production in CHO. Supplementation with 1,3,4-O-Bu3 ManNAc for two stable CHO cell lines, expressing human erythropoietin or IgG, enhanced protein expression for both products with negligible impact on cell growth, viability, glucose utilization, and lactate accumulation...
February 10, 2018: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/29425401/community-structure-dispersal-ability-and-functional-profiling-of-microbiome-existing-in-fat-body-and-ovary-of-the-brown-planthopper-nilaparvata-lugens
#9
Jian-Hua Zhang, Na Yu, Xi-Xia Xu, Ze-Wen Liu
The endosymbionts play vital roles in growth, development and reproduction in insects. Yeast-like endosymbionts (YLSs) have been well studied in Nilaparvata lugens (N. lugens), but little is known about the tissue-specific bacterial microbiomes, especially on the microbial intersection among internal tissues. Here, the correlation of microbial composition, structure, dispersal ability and functional profiling were illuminated in two tissues, the fat body and ovary in N. lugens. A total of 11 phyla and 105 genera were captured from all samples; Firmicutes and Proteobacteria were the most predominant and accounted for more than 99% in all samples...
February 9, 2018: Insect Science
https://www.readbyqxmd.com/read/29401296/changes-in-keratin-8-18-expression-in-human-granulosa-cell-lineage-are-associated-to-cell-death-survival-events-potential-implications-for-the-maintenance-of-the-ovarian-reserve
#10
F Gaytan, C Morales, J Roa, M Tena-Sempere
STUDY QUESTION: Is keratin 8/18 (K8/K18) expression linked to cell death/survival events in the human granulosa cell lineage? SUMMARY ANSWER: A close association exists between changes in K8/K18 expression and cell death/survival events along the human granulosa cell lineage lifespan. WHAT IS KNOWN ALREADY: In addition to their structural and mechanical functions, K8/K18 play essential roles regulating cell death, survival and differentiation in several non-gonadal epithelial tissues...
February 1, 2018: Human Reproduction
https://www.readbyqxmd.com/read/29398349/dynamics-of-energy-reserves-and-the-cost-of-reproduction-in-female-and-male-fiddler-crabs
#11
Karine D Colpo, Laura S López-Greco
The physiological costs of reproduction can be measured as the energy allocated to reproductive activities. In fiddler crabs, females allocate energy to vitellogenesis and brooding, whereas males perform expensive courtship behaviors. We evaluated in a large-scale study the reproduction cost of females and males of Leptuca uruguayensis in a temperate estuary, where their reproductive efforts are synchronized in a short reproductive season. The reproductive investments (vitellogenesis, spermatophore production, and male reproductive behaviors) were measured and related to the dynamics of storage and expenditure of energy reserves (glycogen, total lipids, and total protein) in the hepatopancreas, ovary, and muscle of the enlarged cheliped, throughout one annual cycle...
January 11, 2018: Zoology: Analysis of Complex Systems, ZACS
https://www.readbyqxmd.com/read/29388198/individualised-gonadotropin-dose-selection-using-markers-of-ovarian-reserve-for-women-undergoing-in-vitro-fertilisation-plus-intracytoplasmic-sperm-injection-ivf-icsi
#12
REVIEW
Sarah F Lensen, Jack Wilkinson, Jori A Leijdekkers, Antonio La Marca, Ben Willem J Mol, Jane Marjoribanks, Helen Torrance, Frank J Broekmans
BACKGROUND: During a cycle of in vitro fertilisation plus intracytoplasmic sperm injection (IVF/ICSI), women receive daily doses of gonadotropin follicle-stimulating hormone (FSH) to induce multifollicular development in the ovaries. Generally, the dose of FSH is associated with the number of eggs retrieved. A normal response to stimulation is often considered desirable, for example the retrieval of 5 to 15 oocytes. Both poor and hyper-response are associated with increased chance of cycle cancellation...
February 1, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29388178/antral-follicle-diameter-variance-within-each-ovary-may-be-a-predictor-for-poor-response-in-cases-with-normal-ovarian-reserve
#13
Ilhan Sanverdi, Enis Ozkaya, Suna Kabil Kucur, Dilsat Bilen, MeryemKurek Eken, Bulent Emre Bilgic
OBJECTIVES: To determine the predictive value of antral follicle diameter variance within each ovary for ovarian response in cases with normal ovarian reserve tests. METHODS: This is a prospective observational study. One hundred and thirty nine infertile women who underwent ART in IVF-ICSI unit of Zeynep Kamil women and children's Health Training and research hospital between January 2017 to June 2017 were recruited. Blood samples were collected on day 2/day 3 for assessment of serum FSH and estradiol...
January 31, 2018: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/29386068/effects-of-hpmscs-on-granulosa-cell-apoptosis-and-amh-expression-and-their-role-in-the-restoration-of-ovary-function-in-premature-ovarian-failure-mice
#14
Hongqin Zhang, Qianqian Luo, Xueyan Lu, Na Yin, Dongli Zhou, Lianshuang Zhang, Wei Zhao, Dong Wang, Pengchao Du, Yun Hou, Yan Zhang, Wendan Yuan
BACKGROUND: This study was performed to determine the effects of human placenta mesenchymal stem cell (hPMSC) transplantation on granulosa cell apoptosis and anti-Müllerian hormone (AMH) and follicle-stimulating hormone receptor (FSHR) expression in autoimmune drug-induced premature ovarian failure (POF) mice. The aim of this research is to investigate the mechanisms of hPMSCs on ovarian reserve capacity. METHODS: The POF mice model was established by injection of zona pellucida 3 peptide (pZP3)...
January 31, 2018: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29383195/the-safety-of-fertility-and-ipsilateral-ovary-procedures-for-borderline-ovarian-tumors
#15
Tong Lou, Fang Yuan, Ying Feng, Shuzhen Wang, Huimin Bai, Zhenyu Zhang
Objective: To explore the optimal treatment options for women with borderline ovarian tumors (BOTs). Materials and Methods: The medical records of consecutive patients with BOTs in two academic institutions were retrospectively collected. The pertinent data, including clinicopathological characteristics and, treatment and prognostic information were evaluated. Results: A total of 281 cases of BOTs were included in this analysis. For the entire series, the 5- year disease-free survival (DFS) and overall survival (OS) rates were 91...
December 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/29377293/a-study-of-androgenic-signs-and-disorders-in-greek-female-patients-with-acne
#16
Clio Dessinioti, Vassiliki Tzanetakou, Chrisa Zisimou, Eftychia Platsidaki, Eftychia Koukkou, Andreas Katsambas, Christina Antoniou
Acne represents an established cutaneous manifestation of hyperandrogenism (1). There are scarce studies of androgenic signs or disorders including polycystic ovary syndrome (PCOS), hirsutism, menstrual irregularities or androgenic alopecia, in patients with acne. This article is protected by copyright. All rights reserved.
January 29, 2018: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/29376235/-study-on-the-mechanism-of-bushen-culuan-chongji-treating-kidney-deficiency-and-blood-stasis-in-ovulatory-dysfunctional-infertility
#17
Kun Ma, Min Li
Kidney deficiency and blood stasis is the main cause of ovulatory dysfunctional infertility. Kidney deficiency is the main pathological mechanism. Blood stasis is the main pathological manifestation, and it is an important factor throughout. Bushen Culuan Chongji is under the guidance of traditional Chinese medicine(TCM) theory, previous years of clinical experience, combined with the etiology and pathogenesis of anovulatory infertility and modern pharmacological research results, selected, not only maintains the TCM syndrome differentiation and different diseases features, but also reflects the superiority of the combination of disease...
December 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29374882/-value-of-anti-m%C3%A3-llerian-hormone-in-predicting-pregnant-outcomes-of-polycystic-ovary-syndrome-patients-undergone-assisted-reproductive-technology
#18
Y Li, J Q Tan, Z Y Mai, D Z Yang
Objective: Explore the value of anti-Müllerian hormone (AMH) in predicting pregnant outcomes of polycystic ovary syndrome (PCOS) patients undergone assisted reproductive technology. Methods: The study totally recruited 1 697 patients who underwent the first in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI) cycle in Sun Yat-sen Memorial Hospital from the January 2014 to December 2015. The patients were divided into two groups based on the age<35 (n=758) and ≥35 years old (n=939) , compare the basic data and pregnant outcomes of controlled ovarian hyerstimulation...
January 25, 2018: Zhonghua Fu Chan Ke za Zhi
https://www.readbyqxmd.com/read/29374790/unilateral-or-bilateral-laparoscopic-ovarian-drilling-in-polycystic-ovary-syndrome-a-meta-analysis-of-randomized-trials
#19
REVIEW
Hatem Abu Hashim, Osama Foda, Mohamed El Rakhawy
PURPOSE: This systematic review and meta-analysis aimed to compare the effectiveness of unilateral vs. bilateral laparoscopic ovarian drilling (ULOD vs. BLOD) for improving fertility outcomes in infertile women with clomiphene-resistant polycystic ovary syndrome (PCOS) as well as its effect on ovarian reserve. METHODS: Searches were conducted on PubMed, ScienceDirect, ClinicalTrials.gov, and CENTRAL databases from January 1984 to January 2017. Only randomized trials comparing ULOD with BLOD were included...
January 27, 2018: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/29368340/serum-irisin-concentrations-in-lean-adolescents-with-polycystic-ovary-syndrome
#20
Flora Bacopoulou, Nikos Athanasopoulos, Vasiliki Efthymiou, Aimilia Mantzou, Leon Aravantinos, Spiros Vlahopoulos, Efthymios Deligeoroglou
OBJECTIVE: To explore differences in irisin concentrations between lean adolescents with PCOS and age- and body mass index (BMI)-matched controls and examine the associations of irisin with core features of the syndrome. DESIGN: Cross-sectional study. PATIENTS: Lean females with PCOS, aged 13-21 years. MEASUREMENTS: Physical, hormonal and sonographic assessment. Irisin concentrations were measured with ELISA. RESULTS: Participants included in total 39 sedentary females (mean±SD; age 17...
January 25, 2018: Clinical Endocrinology
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