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https://www.readbyqxmd.com/read/29909529/expression-and-localization-of-vegfr-2-in-hair-follicles-during-induced-hair-growth-in-mice
#1
Xian-Jie Wu, Jing Jing, Zhong-Fa Lu, Min Zheng
Recently, VEGFR-2 has been detected not only in vascular and lymphatic endothelial cells but also in some non-vascular endothelial cells, particularly human hair follicles, sebaceous glands, and sweat glands. In addition, VEGFR-2 has been confirmed to play direct roles in hair follicle keratinocyte regulation beyond simply angiogenesis. To elucidate whether VEGFR-2 activation plays a role in hair follicle cycling regulation, immunofluorescence of VEGFR-2 expression was performed during hair cycling of the dorsum of the mouse induced by hair plucking...
June 16, 2018: Archives of Dermatological Research
https://www.readbyqxmd.com/read/29909235/regulation-of-prostate-cancer-by-hormone-responsive-g-protein-coupled-receptors
#2
REVIEW
Wei Wang, Zhao-Xia Chen, Dong-Yu Guo, Ya-Xiong Tao
Regulation of prostate cancer by androgen and androgen receptor (AR), and blockade of AR signaling by AR antagonists and steroidogenic enzyme inhibitors have been extensively studied. G protein-coupled receptors (GPCRs) are a family of membrane receptors that regulate almost all physiological processes. Nearly 40% of FDA-approved drugs in the market target GPCRs. A variety of GPCRs that mediate reproductive function have been demonstrated to be involved in the regulation of prostate cancer. These GPCRs include gonadotropin-releasing hormone receptor, luteinizing hormone receptor, follicle-stimulating hormone receptor, relaxin receptor, ghrelin receptor, and kisspeptin receptor...
June 15, 2018: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/29908142/vitrification-of-domestic-cat-felis-catus-ovarian-tissue-effects-of-three-different-sugars
#3
Danielle C Brito, Sheyla F S Domingues, Ana Paula R Rodrigues, José R Figueiredo, Regiane R Santos, Júlio C Pieczarka
We aimed to evaluate the effect of three extracellular cryoprotectants on the morphology of vitrified feline preantral follicles. Feline ovarian fragments (0.5 × 2 × 2 mm) collected from five domestic adult cats subjected to ovariohysterectomy for routine castration were vitrified with ethylene glycol (EG) 40% combined or not with sucrose (0.1 or 0.5 M), trehalose (0.1 or 0.5 M), or raffinose (0.1 M). After vitrification using the solid-surface method and warming of the tissues, cryoprotectants were washed out of the ovarian tissues, which were fixed for histological analysis...
June 13, 2018: Cryobiology
https://www.readbyqxmd.com/read/29907785/inhibitory-effect-of-slit2-on-granulosa-cell-proliferation-mediated-by-the-cdc42-paks-erk1-2-mapk-pathway-in-the-prehierarchical-follicles-of-the-chicken-ovary
#4
Rifu Xu, Ning Qin, Xiaoxing Xu, Xue Sun, Xiaoxia Chen, Jinghua Zhao
The SLIT2 ligand and ROBO receptors of the SLIT/ROBO pathway are expressed in hen ovarian follicles and have been shown to play critical roles in ovary development, cell proliferation and apoptosis in mammals. However, the exact roles of SLIT2 and the molecular mechanisms of chicken follicle development remain poorly understood. Here, we discovered that high levels of SLIT2 suppress FSHR, GDF9, STAR and CYP11A1 mRNA and protein expression in granulosa cells (GCs) and cell proliferation (p < 0.01). However, these inhibitory effects can be abolished by the siRNA-mediated knockdown of the ROBO1 and ROBO2 receptors...
June 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29907662/expression-of-atresia-biomarkers-in-granulosa-cells-after-ovarian-stimulation-in-heifers
#5
David A Landry, Lia Rossi-Perazza, Simon Lafontaine, Marc-Andre Sirard
The use of younger gamete donors in dairy cattle genetic selection programs significantly accelerates genetic gains by decreasing the interval between generations. Ovarian stimulation and the practice of follicle-stimulating hormone (FSH) withdrawal, also known as coasting, are intensively used in pre-pubertal heifers without detrimental effects on subsequent reproductive performance but generally with lower embryo yields. However, recent data from embryo transfer programs showed similar embryo yields in younger and sexually mature animals but with a significant difference in the coasting period...
June 15, 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29907333/superstimulation-with-ecg-prior-to-ovum-pick-up-improves-follicular-development-and-fertilization-rate-of-cattle-oocytes
#6
Bibiana Noal Ribas, Daniele Missio, Isac Junior Roman, Normélio Alves Neto, Izaias Claro, Daniela Dos Santos Brum, Fabio Gallas Leivas
This study aimed to evaluate the effect of equine chorionic gonadotrophin (eCG) stimulation prior to ovum pick-up (OPU) on follicular development, number and quality of recovered oocytes, fertilization rate, and early embryo development in vitro. There were four OPU sessions (cross over) conducted on 16 Braford cows to evaluate the effect of various eCG doses. The timing of the wave of ovarian follicular development was synchronized, and three days after, the respective eCG dose was administrated (0, 200, 400, or 800 IU)...
June 9, 2018: Animal Reproduction Science
https://www.readbyqxmd.com/read/29907245/serum-follicle-stimulating-hormone-is-associated-with-reduced-risk-of-diabetes-in-postmenopausal-women-the-hong-kong-osteoporosis-study
#7
Ching-Lung Cheung, Annie W C Kung, Kathryn C B Tan
Menopause is an important transition of reproductive stage in a woman's life. It is associated with diabetes, but the role of follicle stimulating hormone (FSH), a menopause-related hormone, in the risk of diabetes is largely unknown. We evaluated the relationship between serum FSH and diabetes in 1274 participants from the Hong Kong Osteoporosis Study aged≥55 at baseline. We also searched relevant databases for studies on serum FSH and incident diabetes and conducted a meta-analysis using fixed-effect modeling...
August 2018: Maturitas
https://www.readbyqxmd.com/read/29906665/reproductive-performance-of-bos-indicus-beef-cows-treated-with-different-doses-of-equine-chorionic-gonadotropin-at-the-end-of-a-progesterone-estrogen-based-protocol-for-fixed-time-artificial-insemination
#8
Rafael Herrera Alvarez, Guilherme Pugliesi, Fabio Luis Nogueira Natal, Cecilia Constantino Rocha, Gilmar Arantes Ataide Júnior, Alfredo José Ferreira Melo, Ivani Posar Otzuk, Claudio Alvarenga de Oliveira, Patrice Humblot
Two experiments were performed to evaluate the reproductive performance of zebu beef cows treated with different doses of eCG at the end of a progesterone (P4)/estrogen based protocol for timed artificial insemination (TAI). In Experiment 1, suckling Bos indicus Nelore cows (n = 261) received, on day 0, a progesterone (P4) intravaginal device (PD) and an injection of 1 mg estradiol benzoate (EB). On day 8, the PD was removed, 500 μg of cloprostenol was injected, and cows were assigned to one of the following groups: Control (no treatment), 300 (300 IU of eCG), 600 (600 IU of eCG), and 900 (900 IU of eCG)...
June 8, 2018: Theriogenology
https://www.readbyqxmd.com/read/29906662/hormonal-stimulation-in-4-to-7-months-old-nelore-bos-taurus-indicus-females-improved-ovarian-follicular-responses-but-not-the-in-vitro-embryo-production
#9
Thaís Abritta Zacarias, Taynan Stonoga Kawamoto, João Ricardo Scaliante Júnior, Ana Luiza Silva Guimarães, Maurício Machaim Franco, Ricardo Alamino Figueiredo
The inclusion of pre-pubertal bovine females in reproductive management could allow in vitro embryo production and reduce generation interval, thereby causing faster genetic gain of the herd. However, oocytes of pre-pubertal females have lower competence, blastocyst production, and pregnancy rates than those collected from pubertal animals. This study aimed to evaluate the effect of an induced hormonal stimulation on the serum concentrations of Anti-Mullerian hormone (AMH) and FSH, ovarian responses, ovum pick up (OPU), and in vitro produced embryos (IVP) from oocytes obtained from four-to seven-months old Nelore female cattle...
May 31, 2018: Theriogenology
https://www.readbyqxmd.com/read/29906214/re-investigating-the-basement-membrane-zone-of-psoriatic-epidermal-lesions-is-laminin-511-a-new-player-in-psoriasis-pathogenesis
#10
Aki Natsumi, Koji Sugawara, Makiko Yasumizu, Yukari Mizukami, Shigetoshi Sano, Akimichi Morita, Ralf Paus, Daisuke Tsuruta
Psoriasis is a complex chronic inflammatory skin disease characterized by epidermal thickening on the basis of increased keratinocyte proliferation and insufficient apoptosis. Laminins are important components of the basement membrane (BM) and impact on epidermal keratinocyte growth/apoptosis. Although several laminins are involved in the pathogenesis of psoriasis, it is still controversial about the expression patterns of laminin isoforms and which laminins are important in the development of psoriasis. Because laminin-511 and -332 are key BM components in human skin, and laminin-511 stimulates human hair follicle growth, we asked whether the BM zone in psoriasis shows any laminin-related abnormalities...
June 1, 2018: Journal of Histochemistry and Cytochemistry: Official Journal of the Histochemistry Society
https://www.readbyqxmd.com/read/29906034/schmidt%C3%A2-s-syndrome-a-difficult-diagnosis-in-the-latin-american-context
#11
Claudia Barreda-Velit, Rodrigo Salcedo-Pereda, Jesús Ticona
Background: Schmidt’s syndrome, also known as poliglandular autoimmune syndrome type 2, is a rare disease that has a prevalence between 1.5-4.5 cases per 100 000 inhabitants. The diagnosis consists in the concomitant presentation of Addison disease, autoimmune thyroid disease and other autoimmune endocrinological conditions. The aim of this paper is to describe a case of Schmidt’s syndrome in the peruvian context and to analyze the difficulties in the diagnosis. Clinical case: We present the case of a 43-year-old woman that presents to the emergency room with headache, nausea, vomits and a “syncope episode”...
March 2018: Revista Médica del Instituto Mexicano del Seguro Social
https://www.readbyqxmd.com/read/29904626/the-use-of-estrone-3-glucuronide-and-pregnanediol-3-glucuronide-excretion-rates-to-navigate-the-continuum-of-ovarian-activity
#12
REVIEW
Leonard F Blackwell, Delwyn G Cooke, Simon Brown
The patterns of a woman's normal ovarian activity can take many forms from childhood to menopause. These patterns lie on a continuum ranging from no ovarian activity to a fully fertile ovulatory cycle, but among the other defined patterns are cycles with anovulatory ovarian activity, including luteinized unruptured follicles (LUFs), and ovulatory cycles with deficient or short luteal phases. For any woman, these patterns can occur in any order, and one can merge into the next, without an intervening bleed, or be missed entirely...
2018: Frontiers in Public Health
https://www.readbyqxmd.com/read/29903818/two-novel-distantly-related-papillomaviruses-isolated-from-healthy-skin-of-the-timor-deer-rusa-timorensis
#13
Beatriz Mengual-Chuliá, Gudrun Wibbelt, Marc Gottschling, Ignacio G Bravo
We report the complete genome sequences of Rusa timorensis papillomavirus 1 (RtimPV1) and Rusa timorensis papillomavirus 2 (RtimPV2), isolated from hair follicles of asymptomatic skin from the same Timor deer specimen. RtimPV1 and RtimPV2 are evolutionarily only distantly related. RtimPV1 lacks a canonical E2-binding site, and RtimPV2 does not carry an E6 gene.
June 14, 2018: Genome Announcements
https://www.readbyqxmd.com/read/29903601/optimal-skin-regeneration-after-full-thickness-thermal-burn-injury-in-the-spiny-mouse-acomys-cahirinus
#14
Malcolm Maden
The spiny mouse, Acomys cahirinus, shows remarkable regenerative abilities after excisional skin wounding by regrowing hair, sebaceous glands, smooth muscle, skeletal muscle and dermis without scarring. We have asked here whether this same regeneration can be seen after full thickness thermal burn injuries. Using a brass rod thermal injury model we show that in contrast to the lab mouse, Mus musculus, which forms a thick scar covered by a hairless epidermis, the spiny mouse regenerates all the tissues injured - skeletal muscle, dermis, hairs, sebaceous glands such that the skin is externally indistinguishable from its original appearance...
June 11, 2018: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/29902902/-effect-and-mechanism-of-yunkang-oral-liquid-in-regulating-endocrine-system-and-vegf-signaling-pathway-and-reducing-abortion-rate-in-recurrent-abortion-mice
#15
Bo Chen, Qiu-Qiu Shi, Kai-Lun Liang, Yu-Yue Xu, Ying-Ying Fang, Su-Hong Chen, Gui-Yuan Lyu
This experiment focuses on the effect of Yunkang oral liquid on abortion rate, endocrine system and VEGF signal pathway in Clark classical recurrent abortion model mice. RSA mice were randomly divded into model group, low, middle and high-dose groups and progesterone group. The normal pregnancy mice were included into normal group. Since the first day of pregnancy, the normal group and the RSA model group were given the same dose of distilled water, while low, middle and high-dose groups were given Yunkang oral liquid at the dose of 9, 18, 36 mL·kg¹·d⁻¹; progesterone group were given progesterone by 0...
May 2018: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29902792/xy-sry-positive-ovarian-disorder-of-sex-development-in-cattle
#16
Lisa De Lorenzi, Silvana Arrighi, Elena Rossi, Pierangela Grignani, Carlo Previderè, Stefania Bonacina, Fausto Cremonesi, Pietro Parma
In mammals, the sex of the embryo depends on the SRY gene. In the presence of at least one intact and functional copy of this genetic factor (XY embryo) undifferentiated gonads will develop as testicles that subsequently determine the male phenotype. When this factor is not present, i.e., in subjects with 2 X chromosomes, an alternative pathway induces the development of ovaries, hence a female phenotype. In this case study, we describe a female cattle affected by a disorder of sex development (DSD). The subject, despite having a chromosomal XY constitution, did not develop testicles but ovaries, although they were underdeveloped...
June 13, 2018: Sexual Development: Genetics, Molecular Biology, Evolution, Endocrinology, Embryology, and Pathology of Sex Determination and Differentiation
https://www.readbyqxmd.com/read/29902746/the-environmental-contaminant-tributyltin-leads-to-abnormalities-in-different-levels-of-the-hypothalamus-pituitary-thyroid-axis-in-female-rats
#17
Marcelle Novaes Andrade, Ana Paula Santos-Silva, Paula Rodrigues-Pereira, Francisca Diana Paiva-Melo, Niedson Correa de Lima Junior, Mariana Pires Teixeira, Paula Soares, Glaecir Roseni Munstock Dias, Jones Bernardes Graceli, Denise Pires de Carvalho, Andrea Claudia Freitas Ferreira, Leandro Miranda-Alves
Tributyltin is a biocide used in nautical paints, aiming to reduce fouling of barnacles in ships. Despite the fact that many effects of TBT on marine species are known, studies in mammals have been limited, especially those evaluating its effect on the function of the hypothalamus-pituitary-thyroid (HPT) axis. The aim of this study was to investigate the effects of subchronic exposure to TBT on the HPT axis in female rats. Female Wistar rats received vehicle, TBT 200 ng kg-1 BW d-1 or 1000 ng kg-1 BW d-1 orally by gavage for 40 d...
June 11, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29902617/the-possible-ameliorative-effect-of-olea-europaea-l-oil-against-deltamethrin-induced-oxidative-stress-and-alterations-of-serum-concentrations-of-thyroid-and-reproductive-hormones-in-adult-female-rats
#18
Fatiha Mekircha, Samira Chebab, Rosita Gabbianelli, Essaid Leghouchi
This study aimed to verify whether Olea europaea L. (olive) oil (OEO) exerted a protective effect against oxidative stress induced by deltamethrin (DM) and alterations of pituitary, thyroid and gonadal hormones in adult female rats. DM (0,00256 g/kg body weight),OEO (0,6 g/kg body weight) and DM with OEO were administered to rats orally for 28 days. Volatile compounds present in olive oil were analysed by GC-MS. Estradiol (E2 ), Thyroxine (T4),Thyroid Stimulating Hormone (TSH), Triiodothyronine (T3), Follicle Stimulating Hormone (FSH), Luteinizing Hormone (LH), Progesterone (Pg) were measured in serum using Chemiluminescent Microparticle Immunoassay (CMIA)...
June 11, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29901793/two-distinct-vitellogenin-genes-are-similar-in-function-and-expression-in-the-bigfin-reef-squid-sepioteuthis-lessoniana
#19
Chih Chen, Hau-Wen Li, Wei-Lun Ku, Chien-Ju Lin, Ching-Fong Chang, Guan-Chung Wu
Unlike vitellegenin, which is the sole major precursor of yolk protein in all oviparous vertebrates, a variety of major precursor of yolk proteins are found among oviparous invertebrates. Sea urchin have a transferrin-like yolk protein, while all other major precursor of yolk proteins in oviparous invertebrates belong to the superfamily of large lipid-transfer proteins (LLTPs). However, a comprehensive understanding of vitellogenesis is absent in cephalopods. To understand control of vitellogenesis by the LLTPs gene, two vitellogenins (VTG1 and VTG2), two apolipophorins (APOLP2A and APOLP2B), and a cytosolic large subunit of microsomal triglyceride-transfer protein (MTTP) found in the bigfin reef squid...
June 12, 2018: Biology of Reproduction
https://www.readbyqxmd.com/read/29901112/mir%C3%A2-339%C3%A2-5p-negatively-regulates-loureirin-a%C3%A2-induced-hair-follicle-stem-cell-differentiation-by-targeting-dlx5
#20
Xiangjun Li, Yuqiong Wu, Fangfang Xie, Fengxue Zhang, Saixia Zhang, Jianhong Zhou, Dongfeng Chen, Aijun Liu
Our previous study indicated that loureirin A induces hair follicle stem cell (HFSC) differentiation through Wnt/β‑catenin signaling pathway activation. However, if and how microRNAs (miRNAs/miRs) modulate loureirin A‑induced differentiation remains to be elucidated. In the present study, HFSCs were separated from the vibrissae of rats and identified by CD34 and keratin, type 1 cytoskeletal (K)15 expression. Microarray‑based miRNA profiling analysis revealed that miR‑339‑5p was downregulated in loureirin A‑induced HFSC differentiation...
May 31, 2018: Molecular Medicine Reports
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