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The purpose of this study was to compare Bolton anterior and overall ratios among different occlusion groups of southern Chinese children. Fifty plaster casts with Class I occlusion, 30 with Class II occlusion, and 30 with Class III occlusion were selected from a random sample of 1247 12-year-old southern Chinese children in early permanent dentition in(More)
beta-Eudesmol, a sesquiterpenol present in Chinese herbs, improved the tetanic contraction impaired by diisopropylfluorophosphate in isolated mouse diaphragm preparations by an inhibition of the regenerative acetylcholine release. The antagonism was enhanced when a small concentration of obidoxime was present. Neither enzyme reactivation nor curare-like(More)
 The epitope stability of a varicella-zoster virus (VZV) glycoprotein E (gE) was analyzed with monoclonal antibodies (mAbs) in cells infected with different passages of various VZV strains and isolates. The gE-specific mAbs recognized same antigenic sites (epitopes) in VZV isolates with various passage history. All VZV strains and virus-isolates reacted(More)
We have found that beta-eudesmol, a sesquiterpenol constituent of Chinese herb antagonized organophosphate-induced lethal toxicity by reversing the neuromuscular failure and reducing the occurrence of convulsions. Its possible antiepileptic action was further explored in electroshock seizure mice in vivo and in high potassium treated rat hippocampal slices(More)
A method for purification of herpes simplex virus DNA from cell culture is described which yields highly purified viral DNA within 8 h. The method involves the freezing and thawing of virus-infected cells followed by isopycnic centrifugation of the lysate supernatant in cesium trifluoroacetate. It was found that this method recovered DNA from most of the(More)
A randomly selected sample of 662 12-year-old Hong Kong children, 529 of whom were Southern Chinese and 133 non-Chinese, was clinically examined for dental caries. The DMFT values were 2.76 and 1.66 for the Chinese and non-Chinese children, respectively. The D component for the Chinese children was 2.12, while for the non-Chinese children it was only 0.45.(More)
PURPOSE In vivo, the ophthalmic dye rose bengal displays profound antiviral effects against herpes simplex virus (HSV)-1, thus limiting its utility in diagnosis of epithelial keratitis when used before viral culture is performed. In contrast, lissamine green B does not possess significant antiviral activity in vivo. To determine whether polymerase chain(More)
For members of the family Parvoviridae, rescue of infectious virus from recombinant plasmid is usually done in cultured cells. In this study, the whole genome of the pathogenic Muscovy duck parvovirus (MDPV) strain YY was cloned into the pBluescript II (SK) vector, generating recombinant plasmid pYY. With the aid of a transfection reagent, pYY plasmid was(More)
As part of a mixed cross-sectional and longitudinal survey of Hong Kong children which commenced in 1982, 1048 children (539 boys and 509 girls) with a mean age of 12 years 7 months were measured for standing height and weight. Positive secular trends had occurred in the past two decades when the results of this study were compared with those of Chang and(More)
A case is reported of a 15 years old Chinese female with Larsen syndrome exhibiting many characteristic facial and skeletal features plus hitherto unreported orofacial anomalies including delayed dental development; hypodontia affecting all the permanent canines, second and third molars, maxillary lateral incisors and second premolars; morphological(More)