areca/プロリン

The anti-aging effects of Areca catechu L extract (CC-516) on skin were investigate both in vitro and in vivo. The CC-516 has a high proportion of proline (13%) of free amino acid content. The inhibitory effect of CC-516 on the elastase exhibited 37 to 90% inhibition by 10 to 250 mug/ml

Among various tannins tested, Areca II-5-C, a fraction isolated from seeds of Areca catechu L., showed the most potent angiotensin-converting enzyme (ACE) inhibitory activity in vitro. Its antihypertensive activity was therefore investigated in normotensive and spontaneous hypertensive rats (SHR)

Oral submucous fibrosis is a chronic disabling disease developing in up to 0.5% of the estimated 500 million habitual chewers of the "betel" quid. The quid, or chew, usually comprises a leaf of the Piper betel vine in which is wrapped fragments of the nut of Areca catechu, together with slaked lime

Betel quid chewing is a popular oral habit in India, South Africa, and many Southeast Asian countries. The effects of areca nut (AN) extract on the growth, attachment, and protein synthesis of healthy human gingival fibroblasts (GF) were investigated to determine why betel quid (BQ) chewers have

OBJECTIVE The pyridine alkaloid arecaidine is an ingredient of areca nut preparations. It is responsible for many physiological effects observed during areca nut chewing. However, the mechanism underlying its oral bioavailability has not yet been studied. We investigated whether the H⁺-coupled amino

Mutations in the conserved regions (exons 5-9) of the p53 gene were investigated in 37 untreated human primary oral squamous cell carcinomas (SCCs) using polymerase chain reaction-single strand conformation polymorphism and DNA sequencing analyses. P53 mutations were detected in 2 of 37 (5.4%) oral

Extracts of betel nut (Areca catechu) were tested for their capacity to inhibit the endogenous formation of nitrosamines by measurement of the amount of urinary N-nitroso-L-proline (NPRO) following ingestion of sodium nitrate (300 mg) and L-proline (300 mg) by 2 volunteers. A water extract of the