Inhibition of the formation of oral calcium phosphate precipitates: the possible effects of certain honeybee products.

Background And Objective: We studied the effects of honeybee products on the in vitro formation of calcium phosphate precipitates.

Material And Methods: Screening tests of the in vitro formation of calcium phosphate precipitates using 20 types of honey and four types of propolis were carried out using the pH drop method.

Results: The inhibitory effect on the rate of amorphous calcium phosphate transformation to hydroxyapatite and on the induction time varied greatly among the 20 types of honey and four types of propolis.

An in vitro study of the effect of some dietary components on calculus formation: regulation of calcium phosphate precipitation.

Objective: We studied the effects of food components on the in vitro formation of calcium phosphate precipitates.

Materials And Methods: The effects of food components, such as starch, soybean flour, fish meal, rapeseed oil, and coconut oil, on calcium phosphate precipitation were studied using a pH drop method.

Results: Although the addition of starch had no effect on the rate of precipitation of amorphous calcium phosphate (ACP), it increased both the rate of transformation of ACP to hydroxyapatite (HAP) and the induction time (i.

A hot water extract of Chlorella pyrenoidosa reduces body weight and serum lipids in ovariectomized rats.

The effects of a hot water extract of Chlorella pyrenoidosa, which contains chlorella growth factor (CGF), on the body weight, serum lipids, and the bone mass were evaluated using an ovariectomized rat as a model for postmenopausal bone loss. Rats were divided into four groups: sham-operated (Sham), Sham given the CGF solution, ovariectomized (OVX), and OVX given the CGF solution, respectively. Administration of the extract to OVX rats suppressed the body weight gain.

Evaluation of a soybean product fujiflavone P40 as an antiosteoporotic agent in rats.

The preventive effects of Fujiflavone P40 (a soybean isoflavone product) against both bone loss and periodontal alteration were evaluated using an ovariectomized rat model. Rats were divided into five groups: sham-operated (Sham), ovariectomized (OVX), OVX given Fujiflavone P40, OVX given 17beta-oestradiol, and OVX given the vehicle for 17beta-oestradiol, respectively. Fujiflavone P40 contains 46.