نتایج جستجو برای: cartilage hair hypoplasia

تعداد نتایج: 77284  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1999
J S Chung H Dircksen S G Webster

Molting or ecdysis is the most fundamentally important process in arthropod life history, because shedding of the exoskeleton is an absolute prerequisite for growth and metamorphosis. Although the hormonal mechanisms driving ecdysis in insects have been studied extensively, nothing is known about these processes in crustaceans. During late premolt and during ecdysis in the crab Carcinus maenas,...

Journal: :Genes & development 2011
Eerappa Rajakumara Julie A Law Dhirendra K Simanshu Philipp Voigt Lianna M Johnson Danny Reinberg Dinshaw J Patel Steven E Jacobsen

Cytosine DNA methylation is evolutionarily ancient, and in eukaryotes this epigenetic modification is associated with gene silencing. Proteins with SRA (SET- or RING-associated) methyl-binding domains are required for the establishment and/or maintenance of DNA methylation in both plants and mammals. The 5-methyl-cytosine (5mC)-binding specificity of several SRA domains have been characterized,...

2018
Xiaozhen Yang Minjie Xu Genyong Huang Cong Zhang Yangyang Pang Zhigang Yang Yongxu Cheng

Melatonin has been identified in a variety of invertebrate species, but its function is not as well understood as in crustaceans. The effects of melatonin on hemolymph glucose levels and tissue carbohydrate metabolism in the Chinese mitten crab, Eriocheir sinensis, were fully investigated in this study. Moreover, whether the eyestalk (an important endocrine center in invertebrate species) invol...

2016
Jihua Xu Karen K. Tanino Stephen J. Robinson

Epigenetic inheritance was transmitted through selection over five generations of extreme early, but not late flowering time phenotypic lines in Fragaria vesca. Epigenetic variation was initially artificially induced using the DNA demethylation reagent 5-azacytidine (5-azaC). It is the first report to explore epigenetic variant selection and phenotypic trait inheritance in strawberry. Transmiss...

Journal: :European journal of orthodontics 2009
Margarita Varela Patricia Arrieta Cesar Ventureira

The simultaneous occurrence of hypodontia and supernumerary teeth in the same individual is termed 'concomitant hypo-hyperodontia' (CHH). There appears to be a correlation between CHH and some syndromes, but this anomaly is very rare in the general population. The aim of this study was to investigate the frequency of CHH in a large sample of non-syndromic orthodontic patients. The records of 21...

2017
Koichiro Shimizu Tadato Yonekawa Morikatsu Yoshida Mikiya Miyazato Ayako Miura Hideyuki Sakoda Hideki Yamaguchi Masamitsu Nakazato

Context Kisspeptin receptor (KISS1R) is expressed in hypothalamic gonadotropin-releasing hormone neurons and responsible for pubertal onset and reproductive functions. KISS1R mutations remain a rare cause of congenital hypogonadotropic hypogonadism (CHH). Objective The aim of this study was to identify the genetic cause of CHH in a patient and to functionally characterize a KISS1R mutation. ...

Journal: :Molecular ecology 2016
Paul F Gugger Sorel Fitz-Gibbon Matteo PellEgrini Victoria L Sork

DNA methylation in plants affects transposon silencing, transcriptional regulation and thus phenotypic variation. One unanswered question is whether DNA methylation could be involved in local adaptation of plant populations to their environments. If methylation alters phenotypes to improve plant response to the environment, then methylation sites or the genes that affect them could be a target ...

Journal: :Genome research 2013
Jonathan I Gent Nathanael A Ellis Lin Guo Alex E Harkess Yingyin Yao Xiaoyu Zhang R Kelly Dawe

Small RNA-mediated regulation of chromatin structure is an important means of suppressing unwanted genetic activity in diverse plants, fungi, and animals. In plants specifically, 24-nt siRNAs direct de novo methylation to repetitive DNA, both foreign and endogenous, in a process known as RNA-directed DNA methylation (RdDM). Many components of the de novo methylation machinery have been identifi...

2017
Shota Dzemaili Jitske Tiemensma Richard Quinton Nelly Pitteloud Diane Morin Andrew A Dwyer

OBJECTIVE Little is known about how women with isolated GnRH deficiency cope with their condition. This study aimed to examine the health and informational needs of women with congenital hypogonadotropic hypogonadism (CHH) and evaluate if their experiences differ from women with more common forms of infertility. DESIGN Cross-sectional, multiple methods study using web-based data collection to...

Journal: :The Journal of biological chemistry 2003
Hidekazu Katayama Koji Nagata Tsuyoshi Ohira Fumiaki Yumoto Masaru Tanokura Hiromichi Nagasawa

Molting in crustaceans is controlled by molt-inhibiting hormone (MIH) and ecdysteroids. It is presumed that MIH inhibits the synthesis and the secretion of ecdysteroids by the Y-organ, resulting in molt suppression. The amino acid sequence of MIH is similar to that of crustacean hyperglycemic hormone (CHH), and therefore, they form a peptide family referred to as the CHH family. Most of the CHH...

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