Results 61 to 70 of about 21,834 (203)

Responsiveness to progesterone and potassium channel blockers 4-aminopyridine, tetraethylammonium and free Ca(2+) contentration in spermatozoa of patients with oligozoospermia/leucocytospermia

open access: yesThe Ukrainian Biochemical Journal, 2018
The present study was undertaken to evaluate [Ca2+]i signals that occur in human sperm cells exposed in vitro to three diverse compounds; progesterone, 4-aminopyridine (a highly effective inducer of hyperactivation in human sperm) and tetraethylammonium.
R. V. Fafula   +4 more
doaj   +1 more source

The role of embryo movement in the development of the furcula [PDF]

open access: yes, 2017
The pectoral girdle is a complex structure which varies in its morphology between species. A major component in birds is the furcula, which can be considered equivalent to a fusion of the paired clavicles found in many mammals, and the single ...
Allen   +28 more
core   +2 more sources

Network Properties Revealed during Multi-Scale Calcium Imaging of Seizure Activity in Zebrafish. [PDF]

open access: yes, 2019
Seizures are characterized by hypersynchronization of neuronal networks. Understanding these networks could provide a critical window for therapeutic control of recurrent seizure activity, i.e., epilepsy.
Baraban, Scott C, Liu, Jing
core   +1 more source

Enantioselective Total Synthesis of Macfarlandin C, a Spongian Diterpenoid Harboring a Concave-Substituted cis-Dioxabicyclo[3.3.0]octanone Fragment. [PDF]

open access: yes, 2020
The enantioselective total synthesis of the rearranged spongian diterpenoid (-)-macfarlandin C is reported. This is the first synthesis of a rearranged spongian diterpenoid in which the bulky hydrocarbon fragment is joined via a quaternary carbon to the ...
Allred, Tyler K   +4 more
core   +2 more sources

A Sustainable Borrowing Hydrogen Strategy in Natural Deep Eutectic Solvents for the N‐Alkylation of Amines From Alcohols

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
A sustainable, ligand‐free Pd‐catalyzed borrowing hydrogen protocol in a biodegradable hydrophobic natural deep eutectic solvent (NADES) (thymol/DL‐menthol) enables the N‐alkylation of primary amines with benzylic alcohols under mild, aerobic conditions, allowing efficient reuse of both catalyst and solvent for seven consecutive cycles. The hydrophobic
Maryam Saeb   +5 more
wiley   +1 more source

Amiodarone reduces depolarization-evoked glutamate release from hippocampual synaptosomes

open access: yesJournal of Pharmacological Sciences, 2017
Decreased brain glutamate level has emerged as a new therapeutic approach for epilepsy. This study investigated the effect and mechanism of amiodarone, an anti-arrhythmic drug with antiepileptic activity, on glutamate release in the rat hippocampus. In a
Chia Yu Chang   +4 more
doaj   +1 more source

Rapid protium-deuterium exchange of 4-aminopyridines in neutral D2O under microwave irradiation [PDF]

open access: yes, 2016
4-Aminopyridines undergo surprisingly rapid and highly-selective H/D exchange at C-2 and C-6 in neutral D2O upon microwave irradiation at only 190 °C for 2 h in a sealed vessel.
Alnomsy, Ayed   +2 more
core   +1 more source

Behavioral and epileptic phenotypes in a CHD2‐related developmental delay model

open access: yesEpilepsia, EarlyView.
Abstract Objective Heterozygous loss‐of‐function mutations in the CHD2 gene, encoding chromodomain helicase DNA‐binding protein 2, are associated with severe childhood onset epilepsy, global developmental delay, and autistic features. Animal models that accurately recapitulate human phenotypes are crucial for understanding rare neurodevelopmental ...
Anat Mavashov   +10 more
wiley   +1 more source

Role of K+ Channels in M2 Muscarinic Receptor-Mediated Inhibition of Noradrenaline Release From the Rat Stomach

open access: yesJournal of Pharmacological Sciences, 2004
Previously we reported the cholinergic M2 muscarinic receptor-mediated inhibition of noradrenaline release from the rat stomach (K. Yokotani, Y. Osumi. J Pharmacol Exp Ther. 1993;264:54–60).
Kumiko Nakamura   +5 more
doaj   +1 more source

The mechanics of hyperactivation in adhered human sperm [PDF]

open access: yesRoyal Society Open Science, 2014
Hyperactivation is an important phenomenon exhibited by mammalian sperm during the process of acquiring fertilization capacity. The majority of studies have focused on incubation-induced hyperactivation in non-human species, which typically differ in ...
E. H Ooi   +4 more
doaj   +1 more source

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