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https://www.readbyqxmd.com/read/28231696/performance-differences-of-rhode-island-red-bashang-long-tail-chicken-and-their-reciprocal-crossbreds-under-natural-cold-stress
#1
Shanshan Xie, Xukai Yang, Yahui Gao, Wenjie Jiao, Xinghua Li, Yajie Li, Zhonghua Ning
Objective: The Bashang Long-tail chicken (BS), an indigenous Chinese breed, is considered cold tolerant. We selected BS, the Rhode Island Red (RIR), and their reciprocal crossbreds for the present study. The objectives were: 1) to validate whether BS is cold tolerant and whether egg production and cold tolerance of crossbreds could be improved; and 2) to determine the physiological characteristics that underlie cold tolerance and favorable egg production performance in cold environments...
February 23, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28203567/identification-of-three-novel-splicing-variants-and-expression-analysis-of-chicken-gpr1-gene
#2
Xueyou Zhang, Qihai Xiao, Kai Tian, Yan Wang, Xiaoling Zhao, Huadong Yin, Diyan Li, Qing Zhu
GPR1 is a G protein-coupled receptor that plays critical roles in eukaryotic cells: typically, response to glucose stimulation, lipid accumulation, and transmitting nutrition signals to cAMP pathway. However, the alternative splicing of the GPR1 gene and its expression pattern in chicken tissues and ovarian follicles were unknown. In our current study, we used RACE-PCR to identify three GPR1 variants, including the full-length variant (GPR1-va1) and two alternatively spliced variants (GPR1-va2, GPR1-vb). Quantitative real-time PCR examined the expression pattern of GPR1 mRNA in chicken tissues and ovarian follicles...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28107515/regulatory-mechanisms-underlying-the-expression-of-prolactin-receptor-in-chicken-granulosa-cells
#3
Shenqiang Hu, Raj Duggavathi, David Zadworny
Prolactin (PRL) has both pro- and anti-gonadal roles in the regulation of avian ovarian functions through its interaction with the receptor (PRLR). However, neither the pattern of expression of PRLR nor its regulatory mechanisms during follicle development have been clearly defined. The objective of the present study was to investigate mechanisms of PRLR expression in chicken granulosa cells. Levels of PRLR transcript were highest in the stroma and walls of follicles < 2 mm in diameter and progressively declined with the maturation of follicles...
2017: PloS One
https://www.readbyqxmd.com/read/28076754/transcriptome-analysis-of-the-potential-roles-of-foxl2-in-chicken-pre-hierarchical-and-pre-ovulatory-granulosa-cells
#4
Jing Wang, Chengcheng Zhao, Jinqiu Li, Yanping Feng, Yanzhang Gong
Forkheadbox L2 (FOXL2) is a transcription factor involved in mammalian ovarian development, especially in granulosa cell differentiation. However, this factor's function in mature chicken ovary is unclear. To explore the function of FOXL2 in chicken granulosa cells, we performed RNA-seq to compare the transcriptomes of pre-hierarchical (phGCs) and pre-ovulatory granulosa cells (poGCs) by FOXL2 overexpression. We observed that focal adhesion might be one of the key pathways activated during the differentiation of granulosa cells, and FOXL2 might be involved in follicle selection by regulating the expression of cytokines and the concentration of cyclic adenosine monophosphate (cAMP)...
January 5, 2017: Comparative Biochemistry and Physiology. Part D, Genomics & Proteomics
https://www.readbyqxmd.com/read/27975190/investigation-of-marek-s-disease-virus-from-chickens-in-central-ethiopia
#5
Berhan Demeke, Shiferaw Jenberie, Biruk Tesfaye, Gelagay Ayelet, Martha Yami, Charles Euloge Lamien, Esayas Gelaye
Marek's disease (MD) is a lymphoproliferative and neuropathic disease of domestic chickens and less commonly, turkeys and quails, caused by a highly contagious, cell-associated, oncogenic herpesvirus. In Ethiopia, MD is believed to be introduced with importation of exotic and crossbred to improve the poultry production and has been reported to be a potential threat to the poultry sector both in backyard and commercial farming systems. This study was aimed at isolation and molecular analysis of MD virus isolates circulating in chicken population in the central part of Ethiopia where commercial farms are populated...
February 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/27936131/immunolocalization-of-a-histidine-rich-epidermal-differentiation-protein-in-the-chicken-supports-the-hypothesis-of-an-evolutionary-developmental-link-between-the-embryonic-subperiderm-and-feather-barbs-and-barbules
#6
Lorenzo Alibardi, Karin Brigit Holthaus, Supawadee Sukseree, Marcela Hermann, Erwin Tschachler, Leopold Eckhart
The morphogenesis of feathers is a complex process that depends on a tight spatiotemporal regulation of gene expression and assembly of the protein components of mature feathers. Recent comparative genomics and gene transcription studies have indicated that genes within the epidermal differentiation complex (EDC) encode numerous structural proteins of cornifying skin cells in amniotes including birds. Here, we determined the localization of one of these proteins, termed EDMTFH (Epidermal Differentiation Protein starting with a MTF motif and rich in Histidine), which belongs to a group of EDC-encoded proteins rich in aromatic amino acid residues...
2016: PloS One
https://www.readbyqxmd.com/read/27832956/effects-of-pcb-126-and-pcb-153-on-secretion-of-steroid-hormones-and-mrna-expression-of-steroidogenic-genes-star-hsd3b-cyp19a1-and-estrogen-receptors-er%C3%AE-er%C3%AE-in-prehierarchical-chicken-ovarian-follicles
#7
Andrzej Sechman, Marta Batoryna, Piotr A Antos, Anna Hrabia
The objective of this study was to assess the in vitro effects of dioxin-like PCB 126 and non-dioxin-like PCB 153 on basal and ovine LH (oLH)-stimulated testosterone (T) and estradiol (E2) secretion and expression of steroidogenic genes (STAR, HSD3B and CYP19A1) and estrogen receptors α (ERα) and β (ERβ) in white (WF) and yellowish (YF) prehierarchical follicles of the hen ovary. Steroid concentrations in a medium and gene expression in follicles following 6h of exposition were determined by RIA and real-time qPCR, respectively...
December 15, 2016: Toxicology Letters
https://www.readbyqxmd.com/read/27815160/expression-and-regulation-of-prolactin-like-protein-messenger-rna-in-undifferentiated-chicken-granulosa-cells
#8
Shenqiang Hu, Raj Duggavathi, David Zadworny
Prolactin-like protein (PRL-L; LOC417800) is a homolog of PRL in non-mammalian vertebrates and can act as a functional ligand of PRL receptor (PRLR). Despite its widespread expression in extrapituitary tissues, mechanisms of regulation of PRL-L in the chicken ovary remain unknown. In this study, we first examined PRL-L expression in chicken ovarian developing follicles. PRL-L transcript levels were highest (P<0.05) in follicular walls of <2mm follicles and progressively declined during follicle maturation...
January 1, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/27781291/expressed-microrna-associated-with-high-rate-of-egg-production-in-chicken-ovarian-follicles
#9
N Wu, U Gaur, Q Zhu, B Chen, Z Xu, X Zhao, M Yang, D Li
MicroRNA (miRNA) is a highly conserved class of small noncoding RNA about 19-24 nucleotides in length that function in a specific manner to post-transcriptionally regulate gene expression in organisms. Tissue miRNA expression studies have discovered a myriad of functions for miRNAs in various aspects, but a role for miRNAs in chicken ovarian tissue at 300 days of age has not hitherto been reported. In this study, we performed the first miRNA analysis of ovarian tissues in chickens with low and high rates of egg production using high-throughput sequencing...
October 26, 2016: Animal Genetics
https://www.readbyqxmd.com/read/27744051/stephanoprora-chasanensis-n-sp-digenea-echinochasmidae-morphology-life-cycle-and-molecular-data
#10
Vladimir V Besprozvannykh, Konstantin V Rozhkovan, Alexey V Ermolenko
Echinostomatoidea is a large, globally distributed and heterogeneous group of hermaphroditic digeneans that parasite, as adults, vertebrate hosts of all classes. Species of this group have received attention from researchers as they can cause diseases in wildlife and humans. Here we describe the biological and molecular phylogenetic characteristics of Stephanoprora chasanensis n. sp. (Digenea: Echinochasmidae). The life cycle of this fluke was experimentally completed by the use of hosts, i.e. Stenothyra recondite Lindholm, 1929 snail (the 1st intermediate), Rhynchocypris percnurus mantschuricus (Berg, 1907) freshwater fish (the 2nd intermediate) and Gallus gallus chicken (the definitive host)...
February 2017: Parasitology International
https://www.readbyqxmd.com/read/27692091/marek-s-disease-virus-immunosuppression-alters-host-cellular-responses-and-immune-gene-expression-in-the-skin-of-infected-chickens
#11
Mohammad Heidari, Dan Wang, Phillip Delekta, Shuhong Sun
Marek's disease virus (MDV), a highly cell-associated lymphotropic α-herpesvirus, is the causative agent of Marek's disease (MD) in domestic chickens. MDV replicates in chicken lymphocytes and establishes a latent infection within CD4(+) T cells. The latently infected CD4(+) T cells carry the virus to visceral organs, peripheral nerves, and feather follicle epithelium (FFE). FFE is the only anatomical site where infectious enveloped cell-free virus particles are produced and disseminated into the environment...
November 1, 2016: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/27610735/concurrent-fowlpox-and-candidiasis-diseases-in-backyard-chickens-with-unusual-pox-lesions-in-the-bursa-of-fabricius
#12
Fusae Ogasawara, Yu Yamamoto, Yasuo Sato, Kazuhiro Fukunari, Ken-Ichi Murata, Gakuji Yaegashi, Makiko Goto, Ryukoh Murakami
Concurrent fowlpox and candidiasis diseases occurred in a backyard chicken flock. Four deceased chickens (one Nagoya breed and three white silkie chickens) were examined for diagnosis. At necropsy, white curd-like plaques were observed in the crop. Fungal elements that stained positive for Candida albicans with immunohistochemistry were distributed throughout the tongue, choanal mucosa, esophagus, and crop. Typical fowlpox lesions, composed of proliferating epithelial cells with ballooning degeneration and viral intracytoplasmic inclusions, were observed in the conjunctiva, nasal mucosa, and skin around the cloaca...
September 2016: Avian Diseases
https://www.readbyqxmd.com/read/27591285/identification-of-the-gene-product-recognized-by-monoclonal-antibody-giif3
#13
B Felfoldi, A Magyar, N Nagy, I Olah, G T Pharr
The chicken as a research model has a disadvantage compared with the mouse and the human because of the low number of available antibodies against gene products of interest. The goal of this study was to identify the antigen recognized by monoclonal antibody (mAb) GIIF3, which is a 42 kDa protein that appears in follicle-associated epithelium of the guinea hen as well as in different muscle types during chicken embryonic development. The 42 kDa protein, immunoprecipitated from chicken gizzard protein lysates, was evaluated by mass spectrometry...
September 2, 2016: Poultry Science
https://www.readbyqxmd.com/read/27581388/highly-pathogenic-avian-influenza-h5n1-virus-in-feathers
#14
H Nuradji, J Bingham, J Payne, J Harper, S Lowther, H Wibawa, N T Long, J Meers
H5N1 highly pathogenic avian influenza (HPAI) virus causes high mortality of infected birds, with infection in multiple organs, including in feathers. Feathers have been proposed as samples for diagnosis of HPAI infection in birds, and this study is part of a broader investigation validating the use of feathers for diagnostic purposes. To understand and characterize the morphological basis for feather infection, sections from 7 different skin tracts of ducks and chickens infected with 3 different clades of H5N1 HPAI virus from Indonesia and Vietnam were examined histologically...
March 2017: Veterinary Pathology
https://www.readbyqxmd.com/read/27505353/the-hippo-mst-pathway-member-sav1-plays-a-suppressive-role-in-development-of-the-prehierarchical-follicles-in-hen-ovary
#15
Zhichao Lyu, Ning Qin, Thobela Louis Tyasi, Hongyan Zhu, Dehui Liu, Shuguo Yuan, Rifu Xu
The Hippo/MST signaling pathway is a critical player in controlling cell proliferation, self-renewal, differentiation, and apoptosis of most tissues and organs in diverse species. Previous studies have shown that Salvador homolog 1 (SAV1), a scaffolding protein which functions in the signaling system is expressed in mammalian ovaries and play a vital role in governing the follicle development. But the exact biological effects of chicken SAV1 in prehierarchical follicle development remain poorly understood. In the present study, we demonstrated that the SAV1 protein is predominantly expressed in the oocytes and undifferentiated granulosa cells in the various sized prehierarchical follicles of hen ovary, and the endogenous expression level of SAV1 mRNA appears down-regulated from the primordial follicles to the largest preovulatory follicles (F2-F1) by immunohistochemistry and real-time RT-PCR, respectively...
2016: PloS One
https://www.readbyqxmd.com/read/27427764/genome-wide-association-studies-for-comb-traits-in-chickens
#16
Manman Shen, Liang Qu, Meng Ma, Taocun Dou, Jian Lu, Jun Guo, Yuping Hu, Guoqiang Yi, Jingwei Yuan, Congjiao Sun, Kehua Wang, Ning Yang
The comb, as a secondary sexual character, is an important trait in chicken. Indicators of comb length (CL), comb height (CH), and comb weight (CW) are often selected in production. DNA-based marker-assisted selection could help chicken breeders to accelerate genetic improvement for comb or related economic characters by early selection. Although a number of quantitative trait loci (QTL) and candidate genes have been identified with advances in molecular genetics, candidate genes underlying comb traits are limited...
2016: PloS One
https://www.readbyqxmd.com/read/27378405/comparison-of-the-effects-of-human-and-chicken-ghrelin-on-chicken-ovarian-hormone-release
#17
COMPARATIVE STUDY
Alexander V Sirotkin, Abdel Halim Harrath, Roland Grossmann
The aim of the present experiments was to examine the species-specific and cell-specific effects of ghrelin on chicken ovarian hormone release. For this purpose, we compared the effects of chicken and human ghrelin on the release of estradiol (E), testosterone (T), progesterone (P) and arginine-vasotocin (AVT) by cultured fragments of chicken ovarian follicles and on the release of T and AVT by cultured ovarian granulosa cells. In cultured chicken ovarian fragments, both human and chicken ghrelin promoted E release...
November 2016: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/27340039/bone-morphogenetic-protein-15-may-promote-follicle-selection-in-the-hen
#18
C S Stephens, P A Johnson
In the hen, optimal ovulation rate depends on selection of a single follicle into the pre-ovulatory hierarchy. Follicle selection is associated with increased oocyte growth and changes in gene expression in granulosa cells surrounding the oocyte, in preparation for ovulation. This study investigated the expression, function and regulation of bone morphogenetic protein-15 (BMP15) during follicle development in the hen. BMP15 mRNA expression was analyzed in the ooplasm and granulosa cells of 3mm follicles and was confirmed to be primarily in the ooplasm...
September 1, 2016: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/27021352/vasoactive-intestinal-peptide-promotes-differentiation-and-clock-gene-expression-in-granulosa-cells-from-prehierarchal-follicles
#19
Dongwon Kim, Alan L Johnson
Vasoactive intestinal peptide (VIP) signaling via cyclic adenosine monophosphate (cAMP) is reported to stimulate steroidogenesis in ovarian granulosa cells from a variety of vertebrate species, including the domestic hen. Prior to follicle selection in the hen ovary (i.e., cyclic recruitment) follicle-stimulating-hormone (FSH)-induced cAMP signaling is absent within the granulosa layer until immediately following follicle selection. As a consequence, granulosa cells remain in an undifferentiated state and are unable to initiate FSH-induced steroidogenesis...
May 2016: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/26966259/characterization-of-chicken-mmp13-expression-and-genetic-effect-on-egg-production-traits-of-its-promoter-polymorphisms
#20
Zhenjie Yuan, Yuxia Chen, Qiuyue Chen, Miao Guo, Li Kang, Guiyu Zhu, Yunliang Jiang
Extracelluar matrix undergoes constant remodeling, cell-cell, and cell-matrix interactions during chicken ovarian follicle growth, which is coordinated by matrix metalloproteinases (MMPs), and their associated endogenous inhibitors (TIMPs). Transcriptome analysis revealed upregulation of MMP13 in sexually mature chicken ovaries. In this study, we found that the expression of MMP13 in chicken ovary was stably elevated from 60 d to 159 d, and was significantly higher at 159 d than at the other three developmental stages (P < 0...
2016: G3: Genes—Genomes—Genetics
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