A retest of 30 deaf children(58 ears) being trained in our centre who used hearing aids for at least half a year showed that two children(2 ears) suffered from hearing loss. To inquire into the cause of hearing loss, we analysed the frequency,range,gain,SSPL 90. volume control of the hearing aids worn by the children as well as the auditory training habits if the deaf children's parents and teachers,compared the children's hearing before and after using the hearing aids and pointed out the possible reasons that caused the children's hearing loss. Here.We sum up the aspects that should be paid attention to when testing and selecting hearing aids for deaf children.

Oxymatrine is an alkaloid from Traditional Chinese Medicine, Sophora flavescens Ait. which has many pharmacological effects. We studied the effects of oxymatrine on the proliferation of human tonsillar cells and mouse splenocytes with or without mitogens. The results show that oxymatrine can augment the proliferation of the human tonsillar cells which show low PHA & tSAC response capacity. On the other hand, oxymatrine can inhibit the proliferation of the human tonsillar cells which show high PHA & SAC responses capacity. The effects of oxymarine on mouse splenocytes are the same with the latter.

ObjectiveTo observe the clinical efficacy of duloxetine combined with psychological intervention in patients with somatoform disorder.Methods67 patients with somatoform disorder were randomly divided into two groups:study group (34 cases) treated with duloxetine and psychological intervention and control group (33 cases) treated with duloxetine only.And all the 67 patients in the study were assessed by symptom checklisth-90-R (SCL-90),hamilton anxiety scale(HAMA) and global assessment scale(GAS).ResultsAfter 8 weeks treatment,the results of SCL-90 showed that the scores of somatization,obsessive-compulsive,depression,anxiety and phobia factors in the study group ( 1.39 ± 0.45 ; 1.66 ± 0.52 ; 1.83 ± 0.69 ; 1.73 ± 0.66 ; 1.30 ± 0.48 )were notably lower than that in the control group ( 1.78 ± 0.61 ; 1.69 ± 0.47 ;2.39 ± 0.54 ; 2.1 1 ± 0.49 ; 1.49 ±0.78 ).And there were significant statistical differences (P＜ 0.01 ).At the end of the 2nd and 4th week the,scores of SCL-90 somatization,depression,anxiety and phobia factors were lower in the study group than the control group with statistical significance (P＜0.05).At the end of 8th week,the HAMA score in the study group( 10.20 ±3.70) was significantly decreased than the control group (13.07 ± 3.20 ),and with statistical significant (P ＜0.05 ).The response rate was 85.29％ in study group and 60.60％ in control group.And there was a statistically singnificant difference in complete remission ( χ2 =4.08,P ＜ 0.05 ) between the two groups.ConclusionThe study indicates that the combination of duloxetine and psychological intervention is more effective in treating somatoform disorder than using duloxetine only.So this combination treatment is worth generalizing and applying.

Objective To compare the effects of bipolar femor al head replacement (BFHR) and total hip replacement (THR) in the treatment of femoral neck fractures (FNF) in the elderly. Methods Between August 1993 and December 2001, BFHR or THR were performed in 48 old patients (at age of 60-85 years, mean 70.8 years) with subcapital and transcervical types of FNF. Of all, 18 cases were tre ated with BFHR (Group BFHR) and 30 with THR (Group THR). Results OF all, two patients died (not related to operation), one received no f ollow up and 45 were followed up for average 5 years and 2 months with no wound infection or hip dislocation. Occurrence rate of hip and thigh pains in the Grou p THR was 3% (1/29), lower than that in the Group BFHR (4/16). Conclus ions BFHR is only fit for senile cases with poor physical con dition. However, THR can be used for most old patients with FNF.

Objective To research the effect mechanism of ultrashortwave in the correlation of ultrashortwave and the tail replantation, provide the experiment basis of clinical practice of prevention and cure for the vascular crisis after micromodule anastomosis. Methods Eighty Sprague-Dawley(SD) rats of clean grade were 3-month-old,female,and were divided into four groups:control group (group 0),model group (group 1 ),contrast group (group 2),ultrashortwave (USW) group (group 3).The preparation of tail replantation model was cut off soft tissue except for caudal veins on both sides of the tail. The coccyx was not broken away from tail.At last,the audal artery under abdominal main centre ditch was anastomosed.In experiment process, the USW group was divided into high dosage group (group 3A) and low dosage group (group 3B). The caudal arterys were ligated and not anastomosed in the group 0. Caudal arterys in other groups were anastomosed.Rats in the group 0 and group 1 received no treatment,normal management after the operation. Rats in the group 2 were given abdominal cavity injection of papaverin liquid immediately,then once a day to 5 days after the tail replantation.Rats in the group 3 were immediately given USW therapy of twenty minutes on the anastomosis section,and then once a day for 5 days after the tail replantation.The USW dosage of group 3A was 3th grade and 50mA. The USW dosage of group 3B was 2th grade and 28mA.The survival rate of the rat tails was observed after the tail replantation for 10 day.Before being grouped,it was measured that the tail skin temperature diference between near and far side of anastomosis section.After the tail relpantation, the temperature diference was inspected daily for 10 postoperative days hence. Before rats were grouped and the eighth hour after the tail replantation, rats were collected blood plasma specimens and measured contents of nitric oxide with destination colorimetric mathods of nitric oxide.Results Carrying out comparison of survival rate of every group,the output weve:between tail cutting off group (group 0,0) and tail replantation group (group 1,2,3,43.94％) to compare P ＞ 0.05; between each group of the tail replantation groups (1,2,3A,3B group) to compare P＞ 0.05,group 3B ＜ 2 ＜ 1 ＜ 3A; between group 3B and group 1 to compare P ＞ 0.05; between group 2 and group 1 to compare P ＞ 0.05. Each group were compared with the change daily between postoperative and preceding operative the skin temperature diference,single-factor analysis of variance (One-Way ANOVA) analysis:Postoperative 1 day,group 3A ＜ 1,P ＜ 0.05.Postoperative 6 day:3A ＜ 3B ＜ 1 ＜ 2,P ＞ 0.05.Postoperative 7 day:group 3B ＜ 1 ＜ 3A ＜ 2,P ＜ 0.05.Each group were compared with the change of the content of nitric oxide between postoperative 8 hour and preceding operative,with rank-sum test:group 3B ＞ 3A ＞ 2 ＞ 1 ＞ 0,H =33.760,P ＜ 0.05,shows statistically significant.Conclusions USW therapy,especially USW low-dose therapy,can reduce vascular crisis and improve the survival rate of replanted rat tails,after the postoperative 1,6,7 days,reduce skin temperature,improve blood supply,improve nitric oxide at postoperative eighth hour,prevent vascular crisis.Rat tail replantation model in this experiment is feasible.

OBJECTIVETo develop a sensitive and specific LC-MS/MS method for determination of Yizhi osmotic pump tablets active ingredient in Beagle dog plasma.

METHODBeagle dog plasma pre-treatment methods were established. Geniposide, notoginsenoside R1, ginsenoside Rg1 and Rb1 notoginsenoside molecular ions and fragment ions peaks were separated well and detected synchronously by LC-MS/MS with digoxin as internal standard.

RESULTUnder the selected LC-MS/MS conditions, the characteristic fragment ions of the four components could be well separated and quantified, and the calibration curves showed good linearity within a certain concentration range of each component; extraction recoveries of those four compounds in plasma were higher than 75%, method recoveries were higher than 90%; day precision (RSD <10%) and inter-day precision (RSD <15%) were generally fine; freeze-thaw and room temperature experiments showed good stability (RSD <15%).

CONCLUSIONThe method is proved to be suitable for pharmacokinetic studies of Yizhi active ingredients in Beagle dog plasma.

Animals ; Blood Chemical Analysis ; methods ; Calibration ; Chromatography, Liquid ; methods ; Dogs ; Drug Stability ; Drugs, Chinese Herbal ; analysis ; pharmacokinetics ; Male ; Osmosis ; Tablets ; Tandem Mass Spectrometry ; methods ; Temperature ; Time Factors

This study was aimed to search anti-platelet aggregation effectors from Gardenia jasminoides extract with the employment of platelet affinity extraction method coupled with HPLC, in order to provide pharmacological experi-mental evidences of the selected effectors to verify its feasibility. Under physiological conditions, washed rat platelets were added into G. jasminoides extract and then a mixture was gained. Consequently, some components from G. jas-minoides extract were combined to the platelets in the mixture while some were not owing to their special chemical structures and properties. Firstly, the uncombined components were washed off from the mixture. Secondly, the com-bined components in the leftover was washed down and collected, respectively, right after destroying the occupied platelets' structures. Thirdly, different collected eluents were analyzed, respectively, by HPLC established in the pre-vious work to search the effectors. Fourthly, pharmacological experiments were implemented for confirmation. The re-sults showed that dominant effective components from G. jasminoides extract acting on anti-platelet aggregation were identified as geniposide. Further evident was provided as well by pharmacological experiment that geniposide exhibit-ed significant inhibitory effect on anti-platelet aggregation in rats induced by ADP, rat tail collagen and thrombin(P< 0.01). It was concluded that the platelet affinity extraction-HPLC method proposed in this paper can be utilized to analyze the correlation of effectors from G. jasminoides extract and its pharmacological effects. Moreover, there are some correlations between screened chemical substances and their pharmacological effects.

OBJECTIVETo study the transdermal absorbability of gentiopicroside, naringin and protosappanin B contained in Xuanbi gel plaster.

METHODThe Franz diffusing cells method was adopted for the in vitro model of rat belly skins. Three indexes, gentiopicroside, naringin and protosappanin B, residued in the accept liquid, skins and plaster were determined by HPLC.

RESULTThe penetration rates of gentiopicroside, naringin and protosappanin B were respectively 3.47, 1.59, 2.13 microg x cm(-2) x h(-1). After 24 h, their penetration rates were 25.42%, 11.73%, 17.78%, respectively. The residual quantities of gentiopieroside, naringin and protosappanin B in skin were 0.231, 0.593, 0.568 microg x cm(-2), ith the retention rates of 0.027%, 0.227%, 0.475%, respectively. The amount of residue of gentiopicroside, naringin and protosappanin B in plaster were 2179, 674, 278 microg, with the retention rates of 81.36%, 81.92%, 73.83%, respectively.

CONCLUSIONThe in vitro transdermal behavior of Xuanbi gel plaster is close to a zero-order process. The residual quantity the retention rate in skins is much lower than the penetration rate and the residual rate in plaster.

Administration, Cutaneous ; Animals ; Flavanones ; metabolism ; Gels ; chemistry ; Iridoid Glucosides ; metabolism ; Male ; Phenols ; metabolism ; Rats ; Rats, Sprague-Dawley ; Skin Absorption

OBJECTIVETo develop an HPLC method for the determination of plasma concentration of jasminoidin and study the pharmacokinetics of jasminoidin in rabbits administered Xingnaojing naristillae by nasal medication.

METHODAfter sampling blood from the left arteria carotis of rabbits which were administered Xingnaojing naristillae medication by nasal by 12 mg x kg(-1) (counted by gardenia extract) at 1, 3, 5, 10, 20, 30, 45, 60, 90, 120, 240 min, the plasma samples were dealt with acetonitrile precipitation and HPLC was used to determine the plasma concentration of jasminoidin. The pharmacokinetic parameters were computed by Kinetica software.

RESULTThe calibration curve was linear (r = 0.999 6) within the range of 0.136 5-2.73 mg x L(-1) for jasminoidin in plasma. The average recovery was (97.14 +/- 3.78)%, (95.06 +/- 2.95)%, (91.50 +/- 1.82)%. The within-day and between-day precision met the requirements, because the RSD were both less than 4%. Jasminoidin was fitted to a two-compartment open pharmacokinetic model in rabbits. The mainly pharmacokinetic parameters were: C(max) = (2.013 +/- 0.563) mg x L(-1), T(max) = (6.405 +/- 1.764) min, K(e) = (0.032 5 +/- 0.013 3) min(-1), CL = (0.059 3 +/- 0.0246) L x min(-1) x kg(-1), AUC = (116.89 +/- 50.19) mg x min(-1) x L(-1), MRT = (84.447 +/- 19.420) min.

CONCLUSIONThe method can be used to determine the concentration and to investigate the pharmacokinetics of jasminoidin in rabbits. Jasminoidin was absorbed rapidly by nasal medication and has a good perspective.

Administration, Intranasal ; Animals ; Chromatography, High Pressure Liquid ; methods ; Drugs, Chinese Herbal ; administration & dosage ; pharmacokinetics ; Iridoids ; administration & dosage ; blood ; pharmacokinetics ; Male ; Rabbits

OBJECTIVETo establish a method for determination of geniposide in Beagle dogs plasma by high performance liquid chromatography (HPLC), and study the pharmacokinetics and bioavailability of geniposide in Beagle dogs after oral administration Xingnaojing.

METHODTo determine the geniposide in Beagle dogs plasma by HPLC after oral administration or intravenous injection Xingnaojing, and the pharmacokinetic parameters were calculated by the software of Kinetica.

RESULTThe good linearity range of geniposide was 1.24 - 158.88 mg x L(-1). The main pharmacokinetic parameters after oral administration was as follows: Cmax (11.8 +/- 0.6) mg x L(-1), Tmax (52.0 +/- 4.5) min, AUC(1280.8 +/- 172.0) mg x min x L(-1), MRT(118.7 +/- 25.4) min, and these parameters after intravenous injection was follows: Cmax 107.4 +/- 6.3) mg x L(-1), AUC(7930.1 +/- 670.0) mg x min x L(-1), MRT(92.4 +/- 5.1) min. The bioavailability of geniposide in Beagle dogs after oral administration Xingnaojing was (6.46 +/- 0.87)%.

CONCLUSIONThe HPLC method had good applicability. The extract recovery, method recovery, intra-day precision and inter-day precision of the method were all met the requirements. The stability in conditions of room temperature and freeze-thaw cycle was good. The results indicated that the oral administration bioavailability of geniposide was in low degree.

Administration, Oral ; Animals ; Biological Availability ; Chromatography, High Pressure Liquid ; Dogs ; Drugs, Chinese Herbal ; administration & dosage ; pharmacokinetics ; Iridoids ; administration & dosage ; pharmacokinetics