Results 71 to 80 of about 925,140 (188)

Constantes de acidez de ácidos dipróticos a partir de titulações potenciométricas: ilustração dos princípios do cálculo através da construção de um algoritmo muito simples

open access: yesQuímica Nova, 2011
This work describes the creation of an very simple calculation algorithm, based in basic chemical and mathematic principles, for the calculation of weak diprotic acid dissociation constants as, for example, amino acids, from potentiometric titrations ...
Elsa M. Gonçalves   +1 more
doaj   +1 more source

Charged amino acids of the N-terminal domain are involved in coupling binding and gating in α7 nicotinic receptors

open access: yes, 2005
Binding of agonists to nicotinic acetylcholine receptors generates a sequence of conformational changes resulting in channel opening. Previously, we have shown that the aspartate residue Asp-266 at the M2-M3 linker of the α7 nicotinic receptor is ...
Criado Herrero, Manuel   +4 more
core   +1 more source

Nicotine addiction : a review [PDF]

open access: yes, 2013
Nicotine, the major psychoactive compound in tobacco, acts as a potent addictive drug in humans. The addictive nature of nicotine leads to more than 6 million deaths a year.
Di Giovanni, Giuseppe, Vella, Jacob
core   +1 more source

Molecular orbital studies on nicotinic acid, nicotinamide and related compounds

open access: yes, 1978
Electronic structures of nicotinic, isonicotinic and 2-picolinic acids and their amides have been investigated, using the variable-? Pariser-Parr-Pople (PPP), iterative extended Hückel and MINDO/2 methods.
C.C. Patel   +5 more
core   +1 more source

HYPOLIPIDEMIC MEDICATIONS: CURRENT USE AND FUTURE PERSPECTIVES. PART 1. NON-STATIN HYPOLIPIDEMIC MEDICATIONS

open access: yesАтеросклероз, 2016
This article is devoted to discussion about main aspects of current use of non-statin hypolipidemic drugs according last international guidelines (including fibrates, nicotinic acid, resins, polyunsaturated fatty acids, ezetimibe, PCSK9-inhibitors).
A. E. Bagriy   +6 more
doaj  

Regioselective Cross-Coupling Reactions of Boronic Acids with Dihalo Heterocycles

open access: yes, 2016
The carboxylic acid anion moiety has been used as a tunable directing group in the cross-coupling reaction of 2,6-dichloronicotinic acid and 2,5-dibromo-1,2,4-triazole derivatives producing selectively the 2- or 6-substituted nicotinic acids, while only ...
Yukuan Yuan (2259064)   +5 more
core   +1 more source

Nicotinic receptors as targets for novel analgesics and anti-infl ammatory drugs

open access: yes, 2014
Nicotine and nicotinic receptors have been explored for the past three decades as a strategy for pain control. These receptors are widely expressed throughout the central and peripheral nervous system as well as immune cells.
Freitas, Kelen C.C.   +3 more
core   +1 more source

Scientific Opinion on the safety and efficacy of niacin (nicotinamide) as feed additive for all animal species based on a dossier submitted by Agrinutrition BV

open access: yesEFSA Journal, 2012
The term ‘niacin’ is used as generic description of nicotinic acid and nicotinamide with pyridine as the basic structure. Nicotinic acid and nicotinamide function mainly as precursors of the co‐enzymes NAD and NADP. Thus, nicotinamide has physiologically
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP)
doaj   +1 more source

Nicotinic acetylcholine receptors of nerve and muscle: Functional aspects

open access: yes, 1987
Cloning studies suggest that there are at least five types of nicotinic receptor with different amino acid sequences. David Colquhoun and colleagues discuss pharmacological consequences of this heterogeneity.
David Colquhoun   +2 more
core   +1 more source

Nicotinic Acetylcholine Receptors are Possible Therapeutic Targets for Schizophrenia [PDF]

open access: yes, 2010
The rate of smoking in patients with schizophrenia is higher than that in the general population. Nicotinic acetylcholine receptors (nAChR) are involved in the sensorimotor gating deficits in schizophrenia.
川崎, 博己   +11 more
core  

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