Anti-inflammatory and analgesic activity based on polymorphism of cedrol in mice.

Alternate forms of drug crystals display different physicochemical properties. These include stability, dissolution rate, bioavailability and solubility, which can affect pharmacokinetics and pharmacodynamics. It is therefore important to compare the crystal forms of cedrol to obtain optimal anti-inflammatory and analgesic effects.

Hair growth promotion effect of cedrol cream and its dermatopharmacokinetics.

Topical use of cedrol ethanol has been reported to have a beneficial effect on hair loss. However, the use of cedrol has been limited by application-related issues, such as poor water solubility and volatile features. Therefore, the present study developed a cream formulation of cedrol and evaluated various physicochemical parameters of the prepared cream.

Identification and Phylogenetic Analysis of Pear Psyllids (Hemiptera: Psyllidae) in Chinese Pear Orchards.

Pear psyllids are among the most damaging pests in pear orchards, but little knowledge exists of psyllid species in cultivated pear orchards in China. In this study, DNA sequence analyses of the 16S rDNA and cytochrome oxidase I (COI) DNA regions were performed to identify pear psyllids from 28 regions of 20 provinces in China and to classify their genetic relationships to understand the origin of the species. The results showed that Cacopsylla chinensis Yang et Li (Hemiptera: Psyllidae) was found in most pear orchards in China, but Cacopsylla qianli (Hemiptera: Psyllidae) was found in only the cities of Guiyang (Guizhou province) and Xiangyang (Hubei province).

Insecticidal Potential of Clove Essential Oil and Its Constituents on Cacopsylla chinensis (Hemiptera: Psyllidae) in Laboratory and Field.

Cacopsylla chinensis (Yang and Li) (Hemiptera: Psyllidae) is an important pest of pear in China. As an alternative to conventional chemical pesticides, botanicals including essential oils and their constituents could provide an eco-friendly and nonhazardous control method. In this study, the essential oil of clove buds (Syzygium aromaticum) was obtained by hydrodistillation.

Source of atmospheric heavy metals in winter in Foshan, China.

Foshan is a ceramics manufacturing center in the world and the most polluted city in the Pearl River Delta (PRD) in southern China measured by the levels of atmospheric heavy metals. PM2.5 samples were collected in Foshan in winter 2008.

[Characteristics of volatile organic compounds during haze episode in Foshan city].

Volatile Organic Compounds (VOCs) in Foshan City were investigated in December 6 to 30 2008. The concentrations of VOCs in haze days were significantly higher than those in no-haze days. Toluene (68.