BACKGROUND: Child neglect is one of the most important aspects of child abuse and has become a serious problem influencing children's development all over the world. Therefore, it is necessary to nderstand the current conditions and influential factors of child neglect and establish effective evaluation methods in China.OBJECTIVE: To investigate the current conditions and influential factors of urban child neglect in Suzhou city.DESIGN: A comparative analysis of sampling survey.SETTING: Department of Children's Health Care, Soochow University Affiliated Children's Hospital.PARTICIPANTS: This study was conducted in one public kindergarten and two private kindergartens of urban areas in Suzhou city between March and October 2003. Totally 370 children (196 boys and 174 girls) aged between 4 to 6 years old without obvious physical and mental diseases were voluntarily investigated, and they had been living with the person that answered the questionnaire regarding to child neglect in China in the recent 1 year. METHODS: Questionnaire regarding to child neglect in China was sent to each volunteer.he questionnaire evaluates the current conditions of child neglect by 20 items of 5 aspects including physical care (buy fruit for child, consider the nutritional need of child, care about the body height and body mass of child), emotional care (chat with child, play and tour with child, encourage child to do the things whatever they can, listen to what the child feels, introduce the child to the guests when they come to your home, let him or her stop immediately when child cries, care about the activities in kindergarten), education care (buy books for child, tell stories to child, recognize and correct the bad behavior of child, answer the questions asked by child seriously), safety care (protections against fire and electricity at home, warn child against matches, knives and other sharp things, teach child how to cross the road) and health care (prepare the common medicine for child at home, urge child to brush teeth, correct the bad posture). The volunteers were asked to answer each question objectively according to the conditions of child within the recent 1 year, and each question should be answered by selecting only one choice (never, occasionally, usually, always), and anyone should not be omitted. Meanwhile,the educational background and occupation of the parents were also investigated.MAIN OUTCOME MEASURES: The general status of child neglect and the effects of different family educational background and occupation of parents on child neglect were observed. RESULTS: Totally 370 questionnaires were sent out, and 370 qualified ones were recollected, the effective rate was 100%. ① In Suzhou city, the children were given better regards and good care in the aspects of education, medicine and safety, but neglects on children's physical and mental care still exists in a few families. ② Families of different educational background could think highly of the medical care, safety and psychical care of children, but neglects on education and emotional development more commonly existed in the families with the educational background under university. ③ All the families with different occupation could think highly of the medical care, safety and physical care of the children, but education and emotional development were better in the cadre families than in the ordinary families.CONCLUSION: In Suzhou city, the children are given better regards and good care in the aspects of education, medicine and safety, but some bad manifestations of child neglect exist in education and emotion, which are associated with the educational background and occupation of the parents.Further studies about the evaluation, prevention and intervention are needed for child neglect in China.

Objectives: To observe the effects and the mechanisms of exogenous fatty acids on colorectal cancer cells(LoVo). Methods:The effect of exogenous fatty acids on LoVo cells was determined by 5 diphenyl tetrazolium bromide(MTT) assay.The content of MDA was examined to evaluate the extent of lipid peroxidation. Results:The growth of LoVo cells was inhibited by polyunsaturated fatty acids(PUFAs).The inhibitory effect of saturated fatty acids and monounsaturated fatty acids on LoVo cells was not showed.None of the fatty acids was found to fibroblast cells(HLF).PUFAs caused the significant rising of intracellular MDA content. Conclusions:PUFAs could inhibit the growth of colorectal cancer cells.The strengthening of lipid peroxidation may be one of the mechanisms.

Objectives:To observe the changes in metabolism of fatty acids in breast cancer cells and the effects of inhibiting fatty acid synthase(FAS) on the growth of breast cancer cells. Methods:By RT PCR,the expression of FAS mRNA in breast cancer cell line was examined.The growth inhibition of breast cancer cells by specific FAS inhibitor, cerulenin, was determined by MTT assay.Flow cytometric analysis was used to study the changes of cell cycle. Results:FAS mRNA expression in MCF 7 cells was high.We found that cerulenin caused dose and time dependent inhibition of growth of MCF 7 cells.The growth inhibition of MCF 7 after 48 hours exposure of cerulenin at 2.5,5,10 and 20 mg/L was ( 43.47 ?4.58)%,(62.92?2.68)%,(81.93?0.91)% and (67.7?12.27)%( P

The study aims to develop a unified method to determine seven phenolic acids (neochlorogenic acid, chlorogenic acid, 4-caffeoylquinic acid, caffeic acid, isochlorogenic acid B, isochlorogenic acid A and isochlorogenic acid C) contained in honeysuckle flower that is the monarch drug of all the eight Yinqiao Jiedu serial preparations using quantitative analysis of multi-components by single-marker (QAMS). Firstly, chlorogenic acid was used as a reference to get the average relative correction factors (RCFs) of the other phenolic acids in ratios to the reference; columns and instruments from different companies were used to validate the durability of the achieved RCFs in different levels of standard solutions; and honeysuckle flower extract was used as the reference substance to fix the positions of chromatographic peaks. Secondly, the contents of seven phenolic acids in eight different Yinqiao Jiedu serial preparations samples were calculated based on the RCFs durability. Finally, the quantitative results were compared between QAMS and the external standard (ES) method. The results have showed that the durability of the achieved RCFs is good (RSD during 0.80% - 2.56%), and there are no differences between the quantitative results of QAMS and ES (the relative average deviation < 0.93%). So it can be successfully used to the quantitative control of honeysuckle flower principally prescribed in Yinqiao Jiedu serial preparations.
Caffeic Acids ; analysis ; Chlorogenic Acid ; analogs & derivatives ; analysis ; Chromatography, High Pressure Liquid ; Drugs, Chinese Herbal ; analysis ; Flowers ; chemistry ; Hydroxybenzoates ; analysis ; Lonicera ; chemistry ; Quinic Acid ; analogs & derivatives ; analysis

Objective To evaluate diagnostic value of diffusion tensor imaging(DTI)in ringlike- enhanced lesions.Methods Nine abscesses,12 glioblastomas,10 metastases confirmed clinically or pathologically underwent conventional MRI and DTI.Average diffusion coefficient(ADC)value,fractional anisotropy(FA)value and maps were calculated in the central portion and peripheral edema of the lesions. Results On DTI,the abscesses displayed as hyperintense signal with hypointense or isointense signal of edema;but glioblastomas and metastases all showed as hypointense signal with isointense or hypointense signal of edema.On ADC map,the abscesses showed as hypointense signal,the mean ADC value was (0.66?0.07)x10~(-3)mm~2/s,The mean ADC value were(2.50?0.11)x10~(-3)mm~2/s and(2.37?0.52)x10~(-3)mm~2/s for the glioblastomas and metastases,respectively,all demonstrated as hyperintense signal with slightly hyperintense signal of edema.The difference between abscess and necrotic tumors was statistically significant(F=108.80,P

The study on the pharmacokinetics of traditional Chinese medicines (TCMs) is a linking science during the modernization of TCMs, and plays an important role in the studies on the complex material base of TCMs, the in vivo process of ingredient/ component and the pharmacokinetics-pharmacodynamics correlation. However, because of the multi-ingredient/component system of TCMs, how to scientifically reveal the pharmacokinetics that is consistent with TCMs' characteristics has long been a hotspot and difficulty for the exploration. The optimal composition structure of the material basis of TCMs shows the best efficacy, while the difference between the multi-ingredient/component composition structures in the efficacy is closely related to their absorption, transport, metabolism and excretion in vivo. In this article, the authors systematically review the study methods for pharmacokinetics of TCMs and their compounds, and explore the pharmacokinetics of TCMs based on the "component structure theory". As a result, the method for integrating TCM component structure and the TCM pharmacokinetics was proposed to be adopted to intensively study the effect of the component structure on the in vivo TCM multi-ingredient/component pharmacokinetic characteristics, in order to promote the TCM modernization and innovation in China.
Animals ; Area Under Curve ; Chemistry, Pharmaceutical ; Humans ; Medicine, Chinese Traditional ; methods ; Pharmacokinetics ; Structure-Activity Relationship

A study on the microbial transformation of glycyrrhetinic acid (GA) was conducted by a fungus, Cunninghamella blakesleeana CGMCC 3.970 systematically. After incubation with the cell cultures of C. blakesleeana CGMCC 3.970 at 25 degrees C for 7 days on a rotary shaker operating at 135 r x min(-1), GA was converted into one major product and five minor products. The products were extracted and purified by solvent extraction, macroporous adsorbent resin, silica gel column chromatography, and semi-preparative RP-HPLC chromatography. Their structures were identified as 3-oxo-15α-hydroxy-18β-glycyrrhetinic acid(1), 3-oxo-15β-hydroxy-18β-glycyrrhetinic acid (2), 7β,15α-dihydroxy-18β-glycyrrhetinic acid (3), 3-oxo-7β, 15α-dihydroxy-18β-glycyrrhetinic acid (4), 7β-hydroxy-18β-glycyrrhetinic acid(5) and 15α-hydroxy-18β-glycyrrhetinic acid(6) by the analyses of MS, 1H-NMR and 13C-NMR spectroscopic data respectively. Among them, 2 was a new compound. These results suggest that C. blakesleeana CGMCC 3.970 has the capability of selective ketonization and hydroxylation for GA. [Key words] glycyrrhetinic acid; Cunninghamella blakesleeana CGMCC 3. 970; microbial transformation
Biotransformation ; Cunninghamella ; metabolism ; Glycyrrhetinic Acid ; analogs & derivatives ; chemistry ; metabolism ; Molecular Structure ; Spectrometry, Mass, Electrospray Ionization

OBJECTIVETo study the effect of different composition structures of total paeony glycoside (TPG) component and total phenolic acid of Ligusticum chuanxiong ( TLPA) on sodium dithionite (Na2S2O4) -induced human umbilical vein endothelial cells (HUVEC) hypoxic injury. The baseline geometric proportion was used to design different components structure. And then the best structure of components by cell injury model were optimized.

METHODA HUVEC hypoxic injury model was established by being induced of Na2S2O4. Cell viability was measured by MTI colorimetric method, intracellular superoxide dismutase (SOD) activity, malondialdehyde (MDA), lactate dehydrogenase( LDH) levels, nitric oxide (NO) contents were measured by kits. At last, Western blot analysis was used to detect the expression of two proteins, Bcl-2 and Bax.

RESULTCompared with the model group, TPG component, TLPA component at different composition structures can significantly increase SOD activity and decrease MDA, LDH, NO levels (P < 0.01, P < 0.05). Paeoniae Radix Rubra and Chuanxiong Rhizoma components can downregulate the expression of Bax protein and upregulate the expression of Bcl-2 protein. The ratio of Bcl-2 and Bax was significantly increased (P < 0 01, P < 0 05), it means that cell apoptosis was inhibited. The results indicate that among all the component composition structures, TPG and TLPA component at the proportion of 8: 2 had the best protection on hypoxic injury of endothelial cells.

CONCLUSIONTPG component and TLPA component can resist HUVEC hypoxia injury, the protective effect was the most evident under the structure of 8: 2, which may be due to the inhibition of intracellular lipid peroxidation and cell apoptosis.

Apoptosis ; drug effects ; Cell Line ; Cell Survival ; drug effects ; Drugs, Chinese Herbal ; analysis ; pharmacology ; Glycosides ; analysis ; pharmacology ; Human Umbilical Vein Endothelial Cells ; drug effects ; metabolism ; Humans ; Hydroxybenzoates ; analysis ; pharmacology ; Hypoxia ; drug therapy ; genetics ; metabolism ; physiopathology ; Malondialdehyde ; metabolism ; Oxygen ; metabolism ; Paeonia ; chemistry ; Proto-Oncogene Proteins c-bcl-2 ; genetics ; metabolism ; Rhizome ; chemistry

Chinese medicine prescriptions are the wisdom outcomes of traditional Chinese medicine (TCM) clinical treatment determinations which based on differentiation of symptoms and signs. Chinese medicine prescriptions are also the basis of secondary exploitation of TCM. The study on prescription helps to understand the material basis of its efficacy, pharmacological mechanism, which is an important guarantee for the modernization of traditional Chinese medicine. Currently, there is not yet dissertation n the method and technology system of basic research on the prescription of Chinese medicine. This paper focuses on how to build an effective system of prescription research technology. Based on "component structure" theory, a technology system contained four-step method that "prescription analysis, the material basis screening, the material basis of analysis and optimization and verify" was proposed. The technology system analyzes the material basis of the three levels such as Chinese medicine pieces, constituents and the compounds which could respect the overall efficacy of Chinese medicine. Ideas of prescription optimization, remodeling are introduced into the system. The technology system is the combination of the existing research and associates with new techniques and methods, which used for explore the research thought suitable for material basis research and prescription remodeling. The system provides a reference for the secondary development of traditional Chinese medicine, and industrial upgrading.
Drug Prescriptions ; Medicine, Chinese Traditional

Objective To quantitatively analyze the K-ras gene mutation at codon 12 in pancreatic cancer tissues and the relationship between K-ras gene mutation and clinicopathological parameters. Methods Quantitative detection of K-ras gene at codon 12 in 93 pairs of pancreatic cancer and adjacent tissues were performed by using PNA-mediated PCR clamping with two different fluorescence labeled probes. The quantity of mutation was expressed by percentage of mutation. The percentage of K-ras gene mutation = the copy of K-ras mutation/(copy of wild type K-ras + copy of K-ras mutation) × 100%. Results The percentage of mutation of K-ras gene at codon 12 in pancreatic cancer and adjacent tissues were 83.9% and 65.6%, and the difference was statistically significant(P ＜ 0. 05); and the quantity of mutation were (13.385 ± 1. 745) % and (2. 246 ±0. 728) %, and the difference was also statistically significant(P ＜ 0. 05). The quantity of mutation of K-ras gene at codon 12 was not associated with clinicopathological parameters. Conclusions The percentage of K-ras gene mutation, as well as the quantity of K-ras gene mutation was different in pancreatic carcinoma and adjacent tissues.