Results 101 to 110 of about 14,150 (254)

Challenges in the Management of Massive Carotid Body Tumor

open access: yesCase Reports in Otolaryngology
The carotid body paraganglioma is a rare benign neoplasm arising from the chemoreceptor cells of the carotid bulb. The carotid body has the largest collection of paraganglia in the head and neck with 60–70% of head and neck paraganglioma. Paraganglia are
Oluwapelumi Olusoga-Peters   +3 more
doaj   +1 more source

GPCRs Direct Germline Development and Somatic Gonad Function in Planarians.

open access: yesPLoS Biology, 2016
Planarians display remarkable plasticity in maintenance of their germline, with the ability to develop or dismantle reproductive tissues in response to systemic and environmental cues. Here, we investigated the role of G protein-coupled receptors (GPCRs)
Amir Saberi   +4 more
doaj   +1 more source

The Enigmatic Canal-Associated Neurons Regulate Caenorhabditis elegans Larval Development Through a cAMP Signaling Pathway. [PDF]

open access: yes, 2019
Caenorhabditis elegans larval development requires the function of the two Canal-Associated Neurons (CANs): killing the CANs by laser microsurgery or disrupting their development by mutating the gene ceh-10 results in early larval arrest. How these cells
Chien, Jason   +5 more
core   +1 more source

The role of acid‐base balance in cerebrovascular and ventilatory responses to CO2 during 10 h normobaric hypoxia

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend During 10 h exposures to normobaric hypoxia exposure there was a selective leftward shift in ventilatory response to hyperoxic hypercapnic rebreathing, but not the cerebrovascular response. The key findings are that the resetting of the central chemoreflex to lower PCO2${P_{{\mathrm{C}}{{\mathrm{O}}_2}}}$ during early hypoxic ...
Holly Barclay   +3 more
wiley   +1 more source

The genomes of two key bumblebee species with primitive eusocial organization [PDF]

open access: yes, 2015
Background: The shift from solitary to social behavior is one of the major evolutionary transitions. Primitively eusocial bumblebees are uniquely placed to illuminate the evolution of highly eusocial insect societies.
Amdam, Gro V.   +143 more
core   +16 more sources

GABA Immunoreactivity in Chemoreceptor Cells of the Cat Carotid Body.

open access: yesACTA HISTOCHEMICA ET CYTOCHEMICA, 1999
γ-Aminobutyric acid (GABA) immunoreactivities were found by immunohistochemistry in the chemoreceptor cells of the cat carotid body at the light microscopic level. The immunohistochemical process used consisted of a strept-avidin-biotin-peroxidase method. The immunostaining was mostly weak and appeared in about one-third of the cells.
Mieczyslaw Pokorski, Seiji Ohtani
openaire   +2 more sources

Elevated carotid body tonic activity contributes to ventilatory acclimatization and de‐acclimatization to high altitude at rest and during exercise

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Participants spent 13 days at high altitude (3800 m), where the reduced inspired oxygen pressure (↓PiO2$ \downarrow {P_{{\mathrm{i}}{{\mathrm{O}}_2}}}$) which elicited ventilatory acclimatization and increased inhibition of ventilation by transient hyperoxia (ΔV̇E$\Delta {\dot V_{\mathrm{E}}}$).
Ayechew A. Getu   +6 more
wiley   +1 more source

The full repertoire of Drosophila gustatory receptors for detecting an aversive compound. [PDF]

open access: yes, 2015
The ability to detect toxic compounds in foods is essential for animal survival. However, the minimal subunit composition of gustatory receptors required for sensing aversive chemicals in Drosophila is unknown.
Jeong, Yong Taek   +6 more
core   +2 more sources

Deletion of the TRPV1 channel attenuates afferent renal nerve responses to renal artery occlusion but not elevated renal pelvic pressure

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Using wild‐type and Trpv1−/− rats, we assessed the contribution of TRPV1 channels to the activation of afferent renal nerve activity (ARNA) during renal artery occlusion, graded reductions in renal blood flow and elevated renal pelvic pressure.
Jacob B. Sullivan   +2 more
wiley   +1 more source

Networked Chemoreceptors Benefit Bacterial Chemotaxis Performance

open access: yesmBio, 2016
Motile bacteria use large receptor arrays to detect and follow chemical gradients in their environment. Extended receptor arrays, composed of networked signaling complexes, promote cooperative stimulus control of their associated signaling kinases. Here,
Vered Frank   +4 more
doaj   +1 more source

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