Results 81 to 90 of about 7,510,662 (182)

Extreme expansion of the olfactory receptor gene repertoire in African elephants and evolutionary dynamics of orthologous gene groups in 13 placental mammals

open access: yesGenome Research, 2014
Olfactory receptors (ORs) detect odors in the environment, and OR genes constitute the largest multigene family in mammals. Numbers of OR genes vary greatly among species—reflecting the respective species' lifestyles—and this variation is caused by ...
Y. Niimura, A. Matsui, K. Touhara
semanticscholar   +1 more source

Chronic inflammation directs an olfactory stem cell functional switch from neuroregeneration to immune defense

open access: yesCell Stem Cell, 2019
Summary Although olfactory mucosa possesses long-lived horizontal basal stem cells (HBCs) and remarkable regenerative capacity, the function of human olfactory neuroepithelium is significantly impaired in chronic inflammatory rhinosinusitis. Here we show
Mengfei Chen, R. Reed, A. Lane
semanticscholar   +1 more source

Signatures of Selection in the Human Olfactory Receptor OR5I1 Gene [PDF]

open access: yesMolecular Biology and Evolution, 2007
The human olfactory receptor (OR) repertoire is reduced in comparison to other mammals and to other nonhuman primates. Nonetheless, this olfactory decline opens an opportunity for evolutionary innovation and improvement. In the present study, we focus on an OR gene, OR5I1, which had previously been shown to present an excess of amino acid replacement ...
Moreno Estrada, Andrés   +6 more
openaire   +3 more sources

Parental olfactory experience influences behavior and neural structure in subsequent generations

open access: yesNature Neuroscience, 2013
Using olfactory molecular specificity, we examined the inheritance of parental traumatic exposure, a phenomenon that has been frequently observed, but not understood.
B. Dias, K. Ressler
semanticscholar   +1 more source

Transcriptome sequencing of olfactory-related genes in olfactory transduction of large yellow croaker (Larimichthy crocea) in response to bile salts [PDF]

open access: yesPeerJ, 2019
Fish produce and release bile salts as chemical signalling substances that act as sensitive olfactory stimuli. To investigate how bile salts affect olfactory signal transduction in large yellow croaker (Larimichthy crocea), deep sequencing of olfactory ...
Jiabao Hu   +10 more
doaj   +2 more sources

Olfactory receptor genes cooperate with protocadherin genes in human extreme obesity [PDF]

open access: yesGenes & Nutrition, 2015
Worldwide, the incidence of obesity has increased dramatically over the past decades. More knowledge about the complex etiology of obesity is needed in order to find additional approaches for treatment and prevention. Investigating the exome sequencing data of 30 extremely obese subjects (BMI 45-65 kg/m(2)) shows that predicted damaging missense ...
Edwin C. M. Mariman   +5 more
openaire   +5 more sources

Single-Cell RNA-Seq of Mouse Olfactory Bulb Reveals Cellular Heterogeneity and Activity-Dependent Molecular Census of Adult-Born Neurons

open access: yesCell Reports, 2018
SUMMARY Cellular heterogeneity within the mammalian brain poses a challenge toward understanding its complex functions. Within the olfactory bulb, odor information is processed by subtypes of inhibitory interneurons whose heterogeneity and functionality ...
Burak Tepe   +6 more
semanticscholar   +1 more source

Odorant receptor genes are expressed in olfactory neuroblastoma

open access: yesGenetics and Molecular Research, 2013
Olfactory neuroblastoma (ONB) is a malignant tumor found in the human nasal cavity. These tumors are rare and poorly characterized at the molecular level. In this study, we asked whether olfactory-specific genes are expressed in ONBs by using reverse-transcriptase-polymerase chain reaction.
D C, Gonzalez-Kristeller   +5 more
openaire   +2 more sources

Genetic basis of olfactory cognition: extremely high level of DNA sequence polymorphism in promoter regions of the human olfactory receptor genes revealed using the 1000 Genomes Project dataset

open access: yesFrontiers in Psychology, 2014
The molecular mechanism of olfactory cognition is very complicated. Olfactory cognition is initiated by olfactory receptor proteins (odorant receptors), which are activated by olfactory stimuli (ligands). Olfactory receptors are the initial player in the
Elena V. Ignatieva   +10 more
doaj   +1 more source

Spatiotemporal regulation by downstream genes of Prok2 in the olfactory system: from development to function

open access: yesFrontiers in Cell and Developmental Biology
IntroductionOlfaction is important for the quality of life; however, in Kallmann syndrome (KS), defective development results in olfactory dysfunction.
Bo-Ra Kim   +10 more
doaj   +1 more source

Home - About - Disclaimer - Privacy