guvacine/areca catechu

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Developmental patterning and segregation of alkaloids in areca nut (seed of Areca catechu) revealed by magnetic resonance and mass spectrometry imaging.

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Areca nut (seed of Areca catechu) is consumed by people from different parts of Asia, including India. The four major alkaloids present in areca nut are arecoline, arecaidine, guvacoline and guvacine. Upon cutting, the nut reveals two kinds of regions; white and brown. In our present study, we have

Effects of the Areca nut constituents arecaidine and guvacine on the action of GABA in the cat central nervous system.

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Arecaidine and guvacine, constituents of the nut of Areca catechu, inhibited the uptake of GABA and beta-alanine, but not that of glycine, by slices of cat spinal cord. In cats anesthetised with pentobarbitone, electrophoretic arecaidine enhanced the inhibitory actions of GABA and beta-alanine, but

Quality assessment of crude and processed Arecae semen based on colorimeter and HPLC combined with chemometrics methods.

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Raw Arecae Semen, the seed of Areca catechu L., as well as Arecae Semen Tostum and Arecae semen carbonisata are traditionally processed by stir-baking for subsequent use in a variety of clinical applications. These three Arecae semen types, important Chinese herbal drugs, have been used in China and

Cracking the Betel Nut: Cholinergic Activity of Areca Alkaloids and Related Compounds.

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UNASSIGNED The use of betel quid is the most understudied major addiction in the world. The neuropsychological activity of betel quid has been attributed to alkaloids of Areca catechu. With the goal of developing novel addiction treatments, we evaluate the muscarinic and nicotinic activity of the

Tissue-specific and maturity-dependent distribution of pyridine alkaloids in Areca triandra.

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Areca nuts (seeds of Areca catechu L.) are a traditional and popular masticatory in India, Bangladesh, Malaysia, certain parts of China, and some other countries. Four related pyridine alkaloids (arecoline, arecaidine, guvacoline, and guvacine) are considered being the main functional ingredients in

Testing for Betel Nut Alkaloids in Hair of Papuans Abusers using UPLC-MS/MS and UPLC-Q-Tof-MS.

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Betel nut is the fruit of Areca palm, growing in Papua New Guinea. Mixed with limestone and stick mustard, arecoline and guvacoline, which are present in betel nut, are hydrolyzed into arecaidine and guvacine, respectively. As part of the study on dietary habits of Papuans residents, our laboratory

Alkaloids from areca (betel) nuts and their effects on human sperm motility in vitro.

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An improved high-performance liquid chromatography (HPLC) method was established to rapidly and simultaneously determine 3 main alkaloids (arecoline, arecaidine, and guvacine) in areca (betel) nuts (AN), and 12 AN samples from the main betel palm growing areas on the Chinese Mainland were collected

Potential action of betel alkaloids on positive and negative symptoms of schizophrenia: a review.

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BACKGROUND The Areca catechu Linn. is the fourth most used drug in the world after nicotine, ethanol and caffeine. This plant contains nine alkaloids with muscarinic and nicotinic action, which could have an antipsychotic effect. OBJECTIVE The aim of this work is reviewing literature data about the

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