scholarly journals Photoperiod affects the laying performance of the mountain duck by regulating endocrine hormones and gene expression

2021 ◽  
Author(s):  
Hongjia Ouyang ◽  
Bo Yang ◽  
Yongcong Lao ◽  
Jun Tang ◽  
Yunbo Tian ◽  
...  
Keyword(s):  
Gene Expression ◽  
Laying Performance ◽  
Endocrine Hormones

scholarly journals Effects of dietary oxidized oil on laying performance, lipid metabolism, and apolipoprotein gene expression in laying hens

2011 ◽  
Vol 90 (8) ◽  
pp. 1728-1736 ◽  
Author(s):  
H.Y. Yue ◽  
J. Wang ◽  
X.L. Qi ◽  
F. Ji ◽  
M.F. Liu ◽  
...  
Keyword(s):  
Gene Expression ◽  
Lipid Metabolism ◽  
Laying Hens ◽  
Oxidized Oil ◽  
Laying Performance

scholarly journals Effect of curcumin on laying performance, egg quality, endocrine hormones, and immune activity in heat-stressed hens

2020 ◽  
Vol 99 (4) ◽  
pp. 2196-2202 ◽  
Author(s):  
Mengjie Liu ◽  
Yinglin Lu ◽  
Peng Gao ◽  
Xiaolei Xie ◽  
Dongfeng Li ◽  
...  
Keyword(s):  
Egg Quality ◽  
Immune Activity ◽  
Laying Performance ◽  
Endocrine Hormones

scholarly journals Impact of Nano-Bromocriptine on Egg Production Performance and Prolactin Expression in Layers

Animals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2842
Author(s):  
Ahmed Dawod ◽  
Noha Osman ◽  
Hanim S. Heikal ◽  
Korany A. Ali ◽  
Omaima M. Kandil ◽  
...  
Keyword(s):  
Gene Expression ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Laying ◽  
Production Performance ◽  
Monthly Basis ◽  
Laying Performance ◽  
Prolactin Gene ◽  
Potential Use ◽  
Haugh Unit

The current study aimed to investigate the potential use of nano-bromocriptine in improving the laying performance of late laying hens by modulating the prolactin gene expression. A total of 150 NOVOgen brown laying hens aged 70 weeks were randomly allocated into three groups of 50 birds each. The first group was kept as a control, while the second and the third groups were treated with bromocriptine and nano-bromocriptine, respectively, at a dose of 100 µg/kg body weight per week. The pause days, egg production, feed per dozen egg, and Haugh unit were determined on a monthly basis. Also, the relative prolactin gene expression in the pituitary gland was quantified using qPCR and the number of the ovarian follicles was determined after slaughtering at the 84th week of age. It was found that nano-bromocriptine and bromocriptine improved egg laying performance with minimal pause days, reduced feed per dozen egg, and depressed the relative prolactin gene expression; however, nano-bromocriptine treatment was significantly effective compared to bromocriptine. In conclusion, nano-bromocriptine might be beneficial for elongating sequences and reducing pauses.

Molecular and Microscopic Analysis of Altered Gene Expression in Transgenic and Gene Targeted Mice

1996 ◽  
Vol 54 ◽  
pp. 12-13
Author(s):  
W. K. Jones ◽  
J. Robbins
Keyword(s):  
Gene Expression ◽  
Pulmonary Veins ◽  
Microscopic Analysis ◽  
Mouse Tissue ◽  
Adult Heart ◽  
Heavy Chains ◽  
Altered Gene Expression ◽  
Altered Gene ◽  
Pulmonary Myocardium

Two myosin heavy chains (MyHC) are expressed in the mammalian heart and are differentially regulated during development. In the mouse, the α-MyHC is expressed constitutively in the atrium. At birth, the β-MyHC is downregulated and replaced by the α-MyHC, which is the sole cardiac MyHC isoform in the adult heart. We have employed transgenic and gene-targeting methodologies to study the regulation of cardiac MyHC gene expression and the functional and developmental consequences of altered α-MyHC expression in the mouse.We previously characterized an α-MyHC promoter capable of driving tissue-specific and developmentally correct expression of a CAT (chloramphenicol acetyltransferase) marker in the mouse. Tissue surveys detected a small amount of CAT activity in the lung (Fig. 1a). The results of in situ hybridization analyses indicated that the pattern of CAT transcript in the adult heart (Fig. 1b, top panel) is the same as that of α-MyHC (Fig. 1b, lower panel). The α-MyHC gene is expressed in a layer of cardiac muscle (pulmonary myocardium) associated with the pulmonary veins (Fig. 1c). These studies extend our understanding of α-MyHC expression and delimit a third cardiac compartment.

Linking transcription, RNA polymerase II elongation and alternative splicing

2020 ◽  
Vol 477 (16) ◽  
pp. 3091-3104 ◽  
Author(s):  
Luciana E. Giono ◽  
Alberto R. Kornblihtt
Keyword(s):  
Gene Expression ◽  
Alternative Splicing ◽  
Rna Polymerase Ii ◽  
Environmental Changes ◽  
Transcription Elongation ◽  
Single Gene ◽  
Regulation Of Gene Expression ◽  
Regulation Of Transcription ◽  
Stepping Stones ◽  
Eukaryotic Transcription

Gene expression is an intricately regulated process that is at the basis of cell differentiation, the maintenance of cell identity and the cellular responses to environmental changes. Alternative splicing, the process by which multiple functionally distinct transcripts are generated from a single gene, is one of the main mechanisms that contribute to expand the coding capacity of genomes and help explain the level of complexity achieved by higher organisms. Eukaryotic transcription is subject to multiple layers of regulation both intrinsic — such as promoter structure — and dynamic, allowing the cell to respond to internal and external signals. Similarly, alternative splicing choices are affected by all of these aspects, mainly through the regulation of transcription elongation, making it a regulatory knob on a par with the regulation of gene expression levels. This review aims to recapitulate some of the history and stepping-stones that led to the paradigms held today about transcription and splicing regulation, with major focus on transcription elongation and its effect on alternative splicing.

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