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https://www.readbyqxmd.com/read/29222841/evaluation-of-an-ovary-on-a-chip-in-large-mammalian-models-species-specificity-and-influence-of-follicle-isolation-status
#1
J Nagashima, R El Assal, N Songsasen, U Demirci
The ability to grow oocytes from immature ovarian follicles in vitro has significant potential for fertility preservation; yet, it has proved challenging in large mammalian species due to the complex metabolic needs and long-term culture requirements. Currently, follicular incubations are based on a 'static' system with manual exchange of medium. Despite the numerous advantages of conventional culturing approaches, recapitulating the native microenvironment and supporting the survival of ovarian follicles still represent challenges...
December 8, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29222425/polymorphisms-in-jmjd1c-are-associated-with-pubertal-onset-in-boys-and-reproductive-function-in-men
#2
Nina Mørup, Alexander Siegfried Busch, Anne Kirstine Bang, Loa Nordkap, John E Nielsen, Ewa Rajpert-De Meyts, Anders Juul, Niels Jørgensen, Kristian Almstrup
JMJD1C, a member of the Jumonji-domain containing histone demethylases protein family, has been associated with levels of sex-hormone binding globulin (SHBG) and testosterone in men, and knock-out rodent models show age-dependent infertility. The objective of this study was to investigate whether single nucleotide polymorphisms (SNPs) nearby JMJD1C are associated with pubertal onset in boys and with male reproduction. 671 peri-pubertal boys, 1,027 young men, 315 fertile men, and 252 infertile men were genotyped for two JMJD1C SNPs (rs7910927 and rs10822184)...
December 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29221447/disruption-of-postnatal-folliculogenesis-and-development-of-ovarian-tumor-in-a-mouse-model-with-aberrant-transforming-growth-factor-beta-signaling
#3
Yang Gao, Xin Fang, David F Vincent, David W Threadgill, Laurent Bartholin, Qinglei Li
BACKGROUND: Transforming growth factor beta (TGFB) superfamily signaling is implicated in the development of sex cord-stromal tumors, a category of poorly defined gonadal tumors. The aim of this study was to determine potential effects of dysregulated TGFB signaling in the ovary using Cre recombinase driven by growth differentiation factor 9 (Gdf9) promoter known to be expressed in oocytes. METHODS: A mouse model containing constitutively active TGFBR1 (TGFBR1CA) using Gdf9-iCre (termed TGFBR1-CAG9Cre) was generated...
December 8, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/29221424/effects-of-dehydroepiandrosterone-supplementation-on-mice-with-diminished-ovarian-reserve
#4
Xiufeng Lin, Jing Du, Yan Du, Riran Wu, Xiaowu Fang, Yuechan Liao, Song Quan
Dehydroepiandrosterone (DHEA) has been used to improve the pregnancy rate in women with diminished ovarian reserve(DOR) during in vitro fertilization. We aimed to validate the effects of DHEA and identify the possible mechanisms. We constructed a mice model with DOR and analyzed the hormone parameters and follicle counts. In vivo experiment, FSH and LH concentrations in the serum were significantly elevated in the DOR group. However, the FSH and LH concentrations were partially reversed in the DOR + DHEA group...
December 8, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/29217582/spatial-reconstruction-of-immune-niches-by-combining-photoactivatable-reporters-and-scrna-seq
#5
Chiara Medaglia, Amir Giladi, Liat Stoler-Barak, Marco De Giovanni, Tomer Meir Salame, Adi Biram, Eyal David, Hanjie Li, Matteo Iannacone, Ziv Shulman, Ido Amit
Cellular functions are strongly dependent on surrounding cells and environmental factors. Current technologies are limited in characterizing the spatial location and unique gene-programs of cells in less structured and dynamic niches. Here we developed a method (NICHE-seq) that combines photoactivatable fluorescent reporters, two-photon microscopy and single-cell RNA-seq to infer the cellular and molecular composition of niches. We applied NICHE-seq to examine the high-order assembly of immune cell networks...
December 7, 2017: Science
https://www.readbyqxmd.com/read/29217426/composite-lymphoma-of-follicular-b-cell-and-peripheral-t-cell-types-with-distinct-zone-distribution-in-a-75-year-old-male-patient-a-case-study
#6
John Tanaka, Pu Su, Catherine Luedke, Rachel Jug, Lian-He Yang, Kristen Deak, Sarah Horn, Yang Zhang, Marc Delos Angeles, Yi Xie, Endi Wang
Composite lymphoma (CL) of T-/B-cell type is rare, and follicular lymphoma composite with peripheral T-cell lymphoma (PTCL) has not previously been reported. We report such a case with both neoplastic components displaying a unique zone of distribution. A 75-year-old male patient presented with generalized lymphadenopathy. Sections of axillary lymph node demonstrated potentially two clonal processes, PTCL with aberrant CD20 expression and follicular lymphoma. Interestingly, the two neoplastic components were confined to their respective classic distribution zones, with PTCL occupying the interfollicular areas and follicular lymphoma residing in follicles...
December 4, 2017: Human Pathology
https://www.readbyqxmd.com/read/29217303/castleman-disease-and-rosai-dorfman-disease
#7
REVIEW
Miguel A Piris, Elena Aguirregoicoa, Santiago Montes-Moreno, Catuxa Celeiro-Muñoz
This chapter describes the main features of two different diseases, Castleman Disease (CD) and Rosai-Dorfman Disease (RDD). Castleman disease (CD) is a clinical and histopathologically heterogeneous lymphoproliferative disorder that encompasses at least three distinct entities with some common overlapping morphological features: Hyaline Vascular CD (HVCD), Unicentric Plasma Cell CD and Multicentric CD. The most important feature of HVCD is the presence of abnormal germinal centers with hyaline-vascular transformation, sometimes showing multiple germinal centers within a single reactive lymphoid follicle, this outlining HVCD as a disorder of follicular dendritic cells...
December 2, 2017: Seminars in Diagnostic Pathology
https://www.readbyqxmd.com/read/29217212/ovarian-morphology-by-transabdominal-ultrasound-correlates-with-reproductive-and-metabolic-disturbance-in-adolescents-with-pcos
#8
Beth W Rackow, Heidi Vanden Brink, Lynwood Hammers, Clare A Flannery, Marla E Lujan, Tania S Burgert
PURPOSE: To determine whether ovarian morphology imaged using transabdominal ultrasonography reflects clinical and metabolic features in adolescents with polycystic ovary syndrome (PCOS). METHODS: A retrospective pilot study was conducted in 33 adolescents (12-18 years) with PCOS as defined by hyperandrogenism and irregular cycles. Adolescents underwent the following assessments at a random time during the menstrual cycle: transabdominal ultrasonography, physical examination (height, weight, and systolic and diastolic blood pressure), fasting hormonal tests (free, percent free, and total testosterone, androstenedione, follicle stimulating hormone, luteinizing hormone), and metabolic tests (including an oral glucose tolerance test, fasting and 2-hour insulin and glucose, homeostatic model assessment of insulin resistance, and whole-body insulin sensitivity index)...
December 5, 2017: Journal of Adolescent Health: Official Publication of the Society for Adolescent Medicine
https://www.readbyqxmd.com/read/29217167/potential-protective-effect-of-pistacia-lentiscus-oil-against-chlorpyrifos-induced-hormonal-changes-and-oxidative-damage-in-ovaries-and-thyroid-of-female-rats
#9
Samira Chebab, Fatiha Mekircha, Essaid Leghouchi
The purpose of this study was to evaluate the protective effect of Pistacia lentiscus oil (PLO), known for its antioxidant properties, on chlorpyrifos (CPF)-induced alterations in the thyroid, reproductive hormone levels, and oxidative damage in the ovaries and thyroid of adult Wistar rats. The animals were treated with orally administered PLO (2 mL/kg), CPF (6.75 mg/kg), and a combination of CPF and PLO for 30 days. Serum levels of luteinizing hormone (LH), follicle-stimulating hormone (FSH), progesterone (Pg), estradiol (E2), triiodothyronine (T3), thyroxine (T4), and thyroid-stimulating hormone (TSH) were assessed using chemiluminescence assay...
December 4, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29217084/oral-phenytoin-protects-against-experimental-cyclophosphamide-chemotherapy-induced-hair-loss
#10
A Y Onaolapo, A A Adebayo, O J Onaolapo
In the current study, effects of oral phenytoin on hair growth in cyclophosphamide-treated rats were assessed with the goal of evaluating the ability of phenytoin to suppress chemotherapy-induced hair loss. Thirty-six rats were randomly assigned to six groups (1k6) of six each (n=6). In all groups, anagen was induced in flank skin of rats by depilation. On day 9 (anagen VI), rats were injected once with either distilled water (groups 1-3) or cyclophoshamide (groups 4-6). From day 10, rats in group 1 and 4 received oral vehicle (distilled water), groups 2 and 5 received oral phenytoin (50mg/kg), while groups 3 and 6 also received oral phenytoin (100mg/kg)...
December 4, 2017: Pathophysiology: the Official Journal of the International Society for Pathophysiology
https://www.readbyqxmd.com/read/29215832/-activation-of-regeneration-of-red-and-white-pulp-of-the-spleen-after-the-combined-transplantation-of-hsc-and-mscs-in-terms-of-exposure-to-ionizing-radiation
#11
I Yu Maklakova, D Yu Grebnev, A P Yastrebov
The purpose of this work was to study the effect of combined transplantation of multipotent mesenchymal stromal (MSCS) and hematopoietic stem cells (HSCs) isolated from the placenta, on the regeneration of white and red pulp of the spleen under physiological conditions and in conditions of exposure to ionizing radiation. Methods. The experiments were performed with laboratory mice-males. We studied the influence of ionizing radiation dose of 4.0 Gy. Animals of the experimental group were intravenously infused into MMSC and GSK respectively at a dose of 6 million cells/kg and 330 thousand cells/kg, suspended in 0...
April 2017: Patologicheskaia Fiziologiia i èksperimental'naia Terapiia
https://www.readbyqxmd.com/read/29215733/sonic-hedgehog-signaling-mediates-resveratrol-to-improve-maturation-of-pig-oocytes-in-vitro-and-subsequent-preimplantation-embryo-development
#12
Sanghoon Lee, Jun-Xue Jin, Anukul Taweechaipaisankul, Geon A Kim, Byeong Chun Lee
The beneficial effects of resveratrol on in vitro maturation (IVM) have been explained mainly by indirect antioxidant effects and limited information is available on the underlying mechanism by which resveratrol acts directly on porcine cumulus oocyte complexes (COCs). Recently, several studies reported that sonic hedgehog (SHH) signaling mediates resveratrol to exert its biological activities. Furthermore, SHH is an important signaling molecule for follicle development, oocyte maturation and embryo development...
December 7, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29215595/the-role-of-vitamin-d-in-non-scarring-alopecia
#13
REVIEW
Agnieszka Gerkowicz, Katarzyna Chyl-Surdacka, Dorota Krasowska, Grażyna Chodorowska
Non-scarring hair loss is a common problem that affects both male and female patients. Since any disturbances in the hair follicle cycle may lead to hair shedding, or alopecia, it is not surprising that the possible role of vitamin D in alopecia was investigated in many studies. Vitamin D has been shown to have many important functions. A growing body of evidence shows that vitamin D and its receptor are responsible for maintaining not only calcium homeostasis but also skin homeostasis. Moreover, vitamin D could also regulate cutaneous innate and adaptive immunity...
December 7, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29215516/clomiphene-stair-step-protocol-for-women-with-polycystic-ovary-syndrome
#14
Tiffanny Jones, Jacqueline R Ho, Marc Gualtieri, Janet Bruno-Gaston, Karine Chung, Richard J Paulson, Kristin A Bendikson
OBJECTIVE: To compare time to ovulation, ovulation rates, and side effect profile of traditional and the stair-step protocol for ovulation induction using clomiphene citrate in women with polycystic ovary syndrome (PCOS). METHODS: We performed a retrospective study of women seeking care for infertility with a diagnosis of PCOS at a university-based infertility clinic from July 2012 to July 2014. We included patients who were resistant to the initial starting dose of 50 mg clomiphene...
December 4, 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29214681/thyroid-hormones-alter-estrous-cyclicity-and-antioxidative-status-in-the-ovaries-of-rats
#15
Quanwei Wei, Jaafar Sulieman Fedail, Lingfa Kong, Kaizhi Zheng, Chunhua Meng, Mohamed Babo Fadlalla, Fangxiong Shi
To expand our understanding of the roles of thyroid hormones on female reproduction, we induced hypo- and hyper-T rat models to investigate the roles of thyroid hormones on estrous cyclicity, as well as the antioxidative status in the ovaries of rats. In the current study, our data show that hypothyroidism (hypo-T) and hyperthyroidism (hyper-T) led to significantly reduced body weights and ovarain weights and delayed vaginal opening day. For hyper-T, thyroxine (T4), tri-iodothyronine (T3), progesterone (P4) and follicle-stimulating hormone (FSH) were significantly increased, while estradiol (E2) and luteinizing hormone (LH) were significantly decreased...
December 7, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/29214104/a-spermidine-based-nutritional-supplement-prolongs-the-anagen-phase-of-hair-follicles-in-humans-a-randomized-placebo-controlled-double-blind-study
#16
Fabio Rinaldi, Barbara Marzani, Daniela Pinto, Yuval Ramot
Background: Spermidine has been shown both in vitro and in mice models to have an anagen-prolonging effect on hair follicles (HFs). Objectives: To evaluate the effects of a spermidine-based nutritional supplement on the anagen phase of HFs in healthy human subjects in a randomized, double-blind, placebo-controlled trial. Methods: One hundred healthy males and females were randomized to receive a tablet containing a spermidine-based nutritional supplement or a placebo once daily for 90 days...
October 2017: Dermatology Practical & Conceptual
https://www.readbyqxmd.com/read/29212910/foxp1-negatively-regulates-t-follicular-helper-cell-differentiation-and-germinal-center-responses-by-controlling-cell-migration-and-ctla-4
#17
Bi Shi, Jianlin Geng, Yin-Hu Wang, Hairong Wei, Beth Walters, Wei Li, Xuerui Luo, Anna Stevens, Melanie Pittman, Bin Li, Sunnie R Thompson, Hui Hu
T follicular helper (Tfh) cells play an essential role in the formation of germinal centers (GC) and generation of high-affinity Abs. The homing of activated CD4+ T cells into B cell follicles and the involvement of key costimulatory and coinhibitory molecules are critical in controlling both the initiation and the magnitude of GC responses. Meanwhile, studies have shown that a high number of single clone B cells leads to intraclonal competition, which inhibits the generation of high-affinity Abs. Our previous work has shown that transcription factor Foxp1 is a critical negative regulator of Tfh cell differentiation...
December 6, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29212859/human-hair-follicle-transcriptome-profiling-a-minimally-invasive-tool-to-assess-molecular-adaptations-upon-low-volume-high-intensity-interval-training
#18
Jing Zhang, Sarah J Wallace, Maria Y Shiu, Ingrid Smith, Shawn G Rhind, Valerie S Langlois
High-intensity interval training (HIIT) has become a popular fitness training approach under both civilian and military settings. Consisting of brief and intense exercise intervals, HIIT requires less time commitment yet is able to produce the consistent targeted physical adaptations as conventional endurance training. To effectively characterize and monitor HIIT-induced cellular and molecular responses, a highly accessible yet comprehensive biomarker discovery source is desirable. Both gene differential expression (DE) and gene set (GS) analyses were conducted using hair follicle transcriptome established from pre and postexercise subjects upon a 10-day HIIT program by RNA-Seq, Comparing between pre and posttraining groups, differentially expressed protein coding genes were identified...
December 2017: Physiological Reports
https://www.readbyqxmd.com/read/29211946/a-rare-anos1-variant-in-siblings-with-kallmann-syndrome-identified-by-whole-exome-sequencing
#19
D M Lopategui, A J Griswold, H Arora, R I Clavijo, M Tekin, R Ramasamy
Kallmann syndrome is a rare genetic condition causing congenital hypogonadotropic hypogonadism. It presents with delayed puberty, anosmia, and infertility. Here, we set out to identify a causative DNA variant for Kallmann syndrome in two affected brothers of Hispanic ancestry. The male siblings presented with a clinical diagnosis of Kallmann syndrome (anosmia, delayed puberty, azoospermia, and undetectable luteinizing hormone and follicle stimulating hormone levels). Genetic variations were investigated by whole exome sequencing...
December 6, 2017: Andrology
https://www.readbyqxmd.com/read/29210007/bilateral-is-superior-to-unilateral-varicocelectomy-in-infertile-males-with-left-clinical-and-right-subclinical-varicocele-a-prospective-randomized-controlled-study
#20
Xiao-Lei Sun, Jiu-Lin Wang, Yun-Peng Peng, Qing-Qiang Gao, Tao Song, Wen Yu, Zhi-Peng Xu, Yun Chen, Yu-Tian Dai
PURPOSE: The purpose of this study is to compare the effect of bilateral versus unilateral varicocelectomy on seminal response and spontaneous pregnancy rates in infertile male patients with left clinical and right subclinical varicocele. METHODS: A total of 358 infertile men with left clinical and right subclinical varicocele were randomized to group that underwent bilateral (n = 179) and group that underwent unilateral microsurgical subinguinal varicocelectomy (n = 179)...
December 5, 2017: International Urology and Nephrology
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