A new method for the extraction of tea-polypbenols (TP ) from tea using AlCl3 as precipitating agents was proposed. Compared with tbe traditional extraction method using organic solvents, it is shown that the new method is simple and can be operated easily. The extraction rate of TP by the new method could reach 10.5% and the content of the effective ingredients of TP could reach over 99.5%

Child ; Dental Occlusion ; Humans ; Tooth Eruption

In vitro experiment, results showed the that the LH secretion of adenohypophysis incubated with Ginsenosides ( G ) and Pantoc-rine ( P ) was significantly increased, similar to the exciting effect of LRH which stimulats LH secretion. By addition of G or P and Indomethacin (an inhibitor of PGs synthesis) at the same time, however, the LH secretion was significantly decreased. It appears that PGs may be involved in the regulation of the exciting effect of G and P on LH secretion. The experiment in vivo also demonstrated that in healthy young male rats injected with P by S.c.,thetestosterone content in plasma had significant increase, that the binding capacity of testicular tissue to 125I-HCG (receptor function) did not change clearly.

BACKGROUND:At the beginning of the 20th century a strength training method in the backward direction appeared:hip stress strength training method. There are many articles focusing on the concept, function, effect and mechanism of this training method. So far, relevant research has formed a unique branch of special strength training research directions.
OBJECTIVE:To conclude the concept, function, effect, features and mechanisms of hip stress technical strength training through the systematic analysis of literature concerning hip stress strength training. METHODS:CNKI (1998/2010) and Wanfang databases were searched by the first author for relevant articles. The keywords were“hip stress, strength training, trajectory control, exercise training, muscle strength, knee, physical fitness, bone”in Chinese and English. The obtained data were summarized using contrast method and logic analysis method.
RESULTS AND CONCLUSION:Total y 90 papers were retrieved, and final y 34 papers were included. The results showed that the hip technical strength training method is the most effective training method currently to cultivate the running, jumping and throwing back pedaling force after hip extension forces. It has a new training idea and special training equipments, which can effectively solve many sports difficulties in strength training and technical training and has the vital significance for the high-level sports training, skil s assessment and sports teaching. Hip stress special technical strength training research has formed a special research branch of special strength trainings, which wil play a more significant research role.

Objective To study the value of neoadjuvant chemotherapy in the treatment of cervical carcinoma. MethodsA clinical prospective study was carried out from Jan.1997 to Dec.2003,118 patients with cervical carcinoma were given two cycles of combined chemotherapy before operation(neoadjuvant chemotherapy group,group A).102 patients accepted surgery alone in our hospital from Jan.1997 to Dec.2003 were chosen as the comparison group(group B).Survival rate and complications were observed and analysed. Results5 year survival rate in group A was significantly higher than that in group B(P＜0.01),The 5 year survival rate was significantly higher in group A than in group B,despite of different pathological types,with or without radiochemotherapy(P＜0.05).The recurrent rate was lower in group A than that in group B,which show significant difference in the 5 year recurrent rate(P＜0.05). ConclusionNeoadjuvant chemotherapy is an effective method for the treatment of cervical carcinoma in early stage.Because of satisfactory short-term control rate,excision rate,long-term survival rate and low recurrent and metastatic rate,neoadjuvant chemotherapy is worth popularizing in clinical treatment.

Objective To evaluate the effects of percutanenous intrapulmonary injecti0n 0f IL-2 plus radiotherapy for lung cancer. Methods Twenty-two patients with inoperable non small cell lung cancer received percutanenous intrapulmonary injection of 100U ? 6 in 6 weeks; and radiation dose was 60 Gy/6wks. Results The total effective response rate (CR+PR) was 95. 4 % with the complete response rate (CR) of 40. 9 %. Couclusion Percutanenous intrapulmomary injection of IL-2 plus radiotherapy could improve the control rate of the patients with lung cancer.

Objective To investigate the proportions of the functional dyspepsia (FD) subgroups and to explore theri relationship with Helicobacter pylori (HP).Methods 186 cases with FD received questionaires about their condition and were typed according to their symptom.HP was detected through urease test,spear technique and cultivation.Results The proportion and HP-positive rate of the subgroup were 11.29%,14.24% in reflux-type dyspepsia,13.98%,46.15% in ulcer-type dyspepsin,48.39%,41.11% in dysmotility-type dyspepsia and 26.34%, 38.78% in complex dyspepsia,respectively.The total HP-positive rate of FD is 38.17%.Conclusion Dysmotility-type dyspepsia is most common.Some subgroups are overlapping with each other.There is no relationship between FD and HP.The HP-positive rate of the reflux-type dyspepsia is lower.This observation suggests that HP may have protective effects on esophagus.

Objective To study the method for preparing the polyamine cotton fiber loaded with Cu2+ and to test the antibacterial effect of the cotton fiber. Methods The natural cotton fiber was treated through basification, epoxygenation, alkene amination and Cu2+ adsorption. 8 kinds of microorganisms were used for the bacteriostasis test. Results The modified fibers showed a good antimicrobial effect to gram-negative bacteria and the bacteriostasis value achieved 6. The minimal sterilization concentrations of the Cu2+-diethylene triamine cotton fiber, Cu2+-triethylene tetramine cotton fiber and Cu2+-tetraethylene pentamine cotton fiber were 12 mg/ml, 14 mg/ml and 10 mg/ml respectively. The antibacterial process of the cotton fiber included two parts, adsorption and sterilization. The acting site was on the cell membrane. A positive relationship was seen between the concentration of antibacterial cotton fiber and the dissolved rate of bacteria. Conclusion The metal ion fiber shows an excellent performance of broad-spectrum antibacterial effect, especially to gram-negative bacteria and may be the "contact killing" is the acting manner of the antibacterial cotton fiber.

Objective To study the influence of seawater immersion on hemostatic function after burn in dogs. Methods Twenty healthy adult mongrel dogs of beth sexes weighing 12-15 kg were randomly divided into two groups: immersion group(n=10) and control group(n=10). The animals were anesthestized with 3% pentobarbital 30 mg?kg~(-1) i.v., intubated and mechanically ventilated. 5F Swan-Ganz catheter was placed via right internal jugular vein. 10% of the skin on the back was burnt(second degree). In immersion group the animals were immersed in seawater containing salt 25.3 g?L~(-1)(pH8.1, T21-23℃) with head and neck kept above water for 4h. In control group the animals suffered second degree burn of same area without being immersed in seawater. Blood samples were taken from Swan-Ganz catheter before burn(baseline)and 4,7,10,20,28 h after burn for determination of(1) circulating endothelial cell(CEC) count, (2)tissue-type plasminogen activator(t-PA), (3) plasminogen activator inhibitor(PAI) and (4) thromboxane B_2/6-keto-prostaglandin F_(1?)(TXB_2/6-k-PGF_(1?)). At the end of the experiment lung tissue was obtained for microscopic examination. Results The blood CEC count, PAI-1 level and TXB_2/6-k-PGF_(1?) ratio significantly increased while t-PA level significantly decreased at 4 h after burn in control group but at 4-28 h after burn in immersion group. The differences between the two groups were significant. Microscopic examination of the lung showed some thrombi in immersion group. Conclusion Burn causes acute damage to the endothelial cells of the whole body and disorder of hemostasis. They are more severe and last longer after seawater immersion.