Objective To compare the severity of hepatic ischemidreperfusion(I/R)injury caused by partial hepatectomy performed under propofol-remifentanil and isoflurane-fentanyl anesthesia.Methods Thirty ASA Ⅰ or Ⅱ patients aged 41-64 yr weighing 58-86 kg undergoing elective partial hepatectomy were randomly divided into 2 groups(n=15 each):propefol-remifentanil group(PR)and isoflurane-fentanyl group(IF).Anesthesia was induced with midazolam,fentanyl,etomidate and vecuronium.The patients were mechanically ventilated after tracheal intubation.Anesthesia was maintained with TCI of propofol(Cp=3.5μg/ml)and remifentanil(Cp=4.2 ng/ml)in group PR or 1.5%-2.5% isoflurane and intermittent iv boluses of fentanyl in group IF.Muscle relaxation was maintained with intermittent iv boluses of vecuronium in both groups.Blood samples were taken before occlusion of hepatic portal(T1)immediately(T2)and 30,60 min after release of portal occlusion(T3,4)and 1 d after operation(T5),for determination of sernm levels of ALT,AST,γ-GGT,LDH,TBIL,T-SOD and MDA.Specimens were obtained from the liver left intact after partial hepatectomy for ultrastructural examination with electron microscope.ResultsSerum levels of ALT at T5,γ-GGT at T3,4,and MDA at T4,5 were significandy lower while T-SOD at T5 were significantly higher in group PR than in group IF.Electron microscopic examination showed that tissue damages were significantly aRenuated in PR group as compared with IF group.Conclusion Propofol-remifentanil anesthesia can to some extent pmtect the liver against I/R injury during partial hepatectomy by reducing oxygen free radicals.

OBJECTIVE:To domminate the quality of Xinning capsule,the contents of Puerarin in Xinning capsule was determined by HPLC.METHOD:Puerarin was separated on Spherisorb C18 column and detected at 250nm,by using methanol-water-phosphoric acid (280∶720∶0.15)as mobile phase.RESULTS:The resolution was greater than 1. The number of theoretical plates calculaled for Puerarin peak was 8310;The standard curve was linear over the range of 0.2～2μg with the correllation coefficient 0.9999.The average recovery was 99.4% with RSD=2.47%(n=7).CONCLUSION:The method is simple and fast,and can be used for quantitative analysis of Xinning capsule.

OBJECTIVE:To domminate the quality of Fushuye,the contents of baicalin in Fushuye was determined by HPLC.METHOD:Baicalin was separated on Spherisorb C18 column and detected at 278 nm,by using methanol-4g.L-1 phosphoric acid (50∶50) as mobile phase.RESULTS:The resolution was 4.5.The number of theoretical plates calculaled for baicalin peak was 3800.The standard curve was linear over the range of 20 ng～900ng,with the correlation coefficient 0.999 9.The average recovery was 99.88% with RSD=1.54%(n=5). CONCLUSION:The method is simple and fast,and can be used for quantitative analysis of Fushuye.

Objective To investigate the effect of different target effect-site concentrations (Ces) ofremifentanil on the median effective concentration (EC50 ) of etomidate required for loss of consciousness and disappearance of nociceptive stimuli-induced body movement. Methods Eighty ASA Ⅰ orⅡ patients aged 18-64 yr scheduled for elective gynecological surgery under general anesthesia were randomly divided into 4 groups ( n = 20 each): group R0 received no remifentanil and R1-3 groups received remifentanil at 3 predetermined target Ces of 1,2 and 3 ng/ml respectively. At the beginning of anesthesia induction, remifentanil was given by target-controlled infusion (TCI) until the predetermined Ces were achieved, TCI of etomidate was then started at a target plasma concentration of 0.6 μg/ml and then the target plasma concentration of etomidate increased by 0.1 μg/ml every 1 min until the patients lost consciousness and the body movement induced by the nociceptive stimuli disappeared. The Ce of etomidate required for loss of consciousness and disappearance of nociceptive stimuli-induced body move-ment was recorded and the EC50 was calculated by Probit method. Results With the increase in the target Ces of remifentanil, the EC50 of etomidate required for loss of consciousness and disappearance of nociceptive stimuli-induced body movement decreased gradually (P < 0.05) .Conclusion Remifentanil given by TCI can enhance the sedative and analgesic effect of etomidate concentration-dependently.

Objective To study the role of photoallergens and contact allergens in the pathogenesis of chronic actinic dermatitis (CAD).Methods Ba sed on the standard procedures of photopatch test recommended by the British Pho todermatology Group (BPG) and the routine procedures of patch test,photopatch a nd patch tests were performed on 56 patients with CAD,42 patients with polymorp hous light eruption (PLE) and 25 patients with chronic eczema on scalp and face by standard photopatch test series recommended by the International Contact Derm atitis Research Group (ICDRG) and home-made standard series of contact allerge ns.A set of ten Philips TL20W/09N tubes was used as the source of irradiation.Results In the 56 CAD patients,the positive rates were 46.43 %,57.14 % and 32.14% for photopatch test,patch test and both tests,respectively,which appea red to be significantly higher than those in the patients with PLE.Positive pa tch reactions were found in 65% of the patients with chronic eczema,which was s imilar to that of CAD.And the frequency of the positive allergens in chronic ec zema was the same as that in CAD,in which fragrance mixture (FM) ranked the fir st,followed by balsam of Peru (BOP),cobalt chloride,nickel sulphate.In CAD,FM and BOP were the most common allergens and photoallergens,which accounted fo r 44% and 32% of the positive reactions in patch tests,15.38% and 17.95% in pho topatch tests,respectively.Conclusions Both photoallergens and contact aller gens may play important roles in the pathogenesis of CAD.Allergens positive in patch tests and photopatch tests and related compounds which can cause cross-r eactivity with the above allergens should be avoided by the patients with CAD.

Objective To determine the normal range of minimal erythema dose (MED) of normal skin to ultraviolet A (UVA) and B (UVB). Methods The definition of MED is the dose of UVA required to induce a just perceptible erythema on an individual′s skin 24 hours after irradiation. One hundred and eighteen subjects including healthy volunteers and patients with noninflammatory skin disorders were enrolled and studied with SUV1000 type UV simulator in March 2002. Results The average MED value for UVA was 55 J/cm2 (range: 18 - 95 J/cm2) in the males, and 40 J/cm2 (range: 15 - 100 J/cm2) in the females. The average MED value for UVB was 31 mJ/cm2 (range: 12 - 95 mJ/cm2) in the males and 29 mJ/cm2 (range: 8 - 95 mJ/cm2) in the females. The MED value for UVA in the males was significantly higher than that in the females (P 0.05). The MED values for UVA as well as UVB in skin type Ⅲ were significantly lower than those in skin type Ⅳ (UVA-MED: P

Objective:To explore risk factors of skin pruritus in peritoneal dialysis patients and the effect of individualized care intervention, to provide guidance for clinical practice.Methods:The total of 87 patients with peritoneal dialysis who were followed-up with pruritus in the Beijing Anzhen Hospital from January 2017 to June 2020 were selected. The Visual Analogue Scale (VAS) was used to evaluate the degree of pruritus, and the patients were divided into two groups: mild-to-moderate skin pruritus group (VAS≤6 points) and severe skin pruritus group (VAS>6 points). The risk factors of severe skin pruritus were analyzed by single factor and multivariate Logistic regression. The improvement of skin pruritus after 3 months of individualized nursing intervention was observed.Results:Among the 87 patients, the mild-to-moderate skin pruritus group and the severe skin pruritus group accounted for 64.4%(56/87) and 35.6%(31/87), respectively. Single factor analysis showed that the age, prevalence of diabetes, serum albumin, serum phosphorus, intact parathyroid hormone and C-reactive protein levels were (61.8 ± 11.5) years old, 33.3%(19/56), (36.3 ± 5.3) g/L, (1.6 ± 0.5) mmol/L, 328.4(144.9, 494.5) ng/L, 2.8(0.6, 8.3) ng/L in the mild-to-moderate skin pruritus group, and (67.0 ± 9.2) years old, 61.1%(19/31), (33.9 ± 4.8) g/L, (1.9 ± 0.3) mmol/L, 397.0(300.0,758.6) ng/L, 7.2(2.6, 17.2) mg/L in the severe skin pruritus group, the differences were significant between the two groups ( t values were -2.17, 2.14, -2.32, Z values were -2.28, -2.90, χ 2 value was 6.07, P<0.05). Logistic multivariate regression analysis showed that low albumin, high blood phosphorus and high C-reactive protein were independent risk factors for severe skin pruritus in peritoneal dialysis patients ( P<0.05). After 3 months of individualized care,18.4% (16/87) patients had complete remission,19.5% (17/87) patients significantly relieved, 55.2% (48/87) relieved, 6.9% (6/87) were ineffective, and the total response rate was 93.1%(81/87). Conclusions:More than one-third of peritoneal dialysis patients with pruritus are severe. Lower serum albumin, higher serum phosphorus and higher C-reactive protein are independent risk factors for severe pruritus in peritoneal dialysis patients. Individualized care can effectively improve pruritus in peritoneal dialysis patients.

Objective To evaluate the efficacy of clemastine fumarate in antagonizing atracuriuminduced release of histamine in the patients undergoing surgery under general anesthesia.Methods Eighty American Society of Anesthesiologists physical status Ⅰ or Ⅱ patients,aged 21-59 yr,with body mass index of 17-26 kg/m2,scheduled for elective modified radical mastectomy,were divided into 2 groups (n=40 each) using a random number table:control group (group C) and clemastine fumarat group (group CF).Clemastine fumarate 2 mg was injected intramuscularly at 20 min before induction of anesthesia.Anesthesia was induced with iv midazolam 0.1 mg/kg,etomidate 0.3 mg/kg,fentanyl 4-6 μg/kg and atracurium 0.8 mg/kg.The patients were mechanically ventilated after insertion of the larygeal mask airway.Anesthesia was maintained with inhalation of 2％ sevoflurane.Before administration of clemastine fumarate,at 20 min after administration,immediately before administration of atracurium,and at 2,5,10 and 20 min after administration of atracurium,arterial blood samples were taken for determination of plasma histamine concentrations,and the peak airway pressure and degree of cutaneous color were recorded.The development of histaminemia and adverse cardiovascular events was assessed.Steward recovery scores and Ramsay sedation scores were recorded at 10 min after removal of the laryngeal mask airway.Results The incidence of histaminemia was 60％ and 8％ in C and CF groups,respectively.Compared with group C,the plasma histamine concentrations,incidence of histaminemia,degree of cutaneous color,and incidence of hypotension and tachycardia were significantly decreased (P＜0.05),and no significant change was found in the peak airway pressure,Steward recovery scores and Ramsay sedation scores in group CF (P＞0.05).Conclusion For atracurium-induced release of histamine in the patients undergoing surgery under general anesthesia,clemastine fumarate 2 mg injected intramuscularly before operation can not only antagonize histamine at H1 level,but also reduce histamine release,and exerts no influence on recovery from anesthesia and produces good antihistamine efficacy.

Objective To investigate the cell survival of the combination of fibrin glue and adiposederived stem cells (ADSCs) in rats when implanted into ischemic myocardium and the improvement of heart function.Methods The rat ADSCs were isolated from the subcutaneous adipose tissues.The surface phenotype of these cells was analyzed by flow cytometry.Myocardial infarction was induced in female rats using coronary artery ligation.One week after MI,surviving rats were randomized (random nuber) into 4 groups,control group (n =10),fibrin group (n =10),cell group (n =10) and combination group (n =10).100 μl of PBS was injected into the ischemic myocardium in control group.100 μl of Fibrin glue were injected into ischemic myocardium in fibrin group.100 μl of ADSCs labeled with DAPI were injected into the infract along the border zone in cell group.ADSCs in 100 μl of fibrin glue were injected into the infract in combination group.Four weeks after the injection the surviving rats underwent examination of heart functions by the Hemodynamics.The rats were killed and their hearts were taken out to undergo immunohistochemistry with 4,6-diamidino-2-phenylindole (DAPI) and actin and factor Ⅶ to measure the area of cardiac infarction and the capillary density.The heart infarcted size was calculated by masson trichrome staining.All data was analyzed by software SPSS 15.0,ANOVA comparison tests and the student t test were used,and P ＜ 0.05 was considered as statistically significant.Results Four weeks after the cells were transplanted,LVSP and + dp/dtmax of combination group were highest among all groups.The heart infarcted size of the combination group was (28.5 ± 3.6) ％,significantly less than those of the cell group (33.33 ± 2.3) ％ and fibrin group (35.96 ± 2.11) ％,both P ＜ 0.05.The capillary density of the combination group was (108.7 ± 11.38) /mm2,significantly greater than those of the cell group and that of the fibrin group,and greater than that of the control group.DAPI and actin double staining detected a varied increase in the number of surviving cardiomyoctyes at the heart infarcted area.Conclusions Transplantation of ADSCs with fibrin glue brings better improvement in cell survival and in restoration of heart function than either cellular or fibrin therapy alone.

OBJECTIVETo investigate the feature of histomorphology and biology of uterine bizarre leiomyoma from the clinical, pathological features as well as the immunohistochemical expression.

METHODSTotally 25 cases of leiomyomas were studied. Among them, immuno-histochemical staining (SP and ABC methods) for smooth muscle actin (SMA), proliferative cell nucleus antigen (PCNA), estrogen receptors (ER), and progesterone receptors (PR) were performed in 20 cases. The clinical features and follow-up records were analyzed.

RESULTSThe main clinical findings were irregular vaginal bleeding, pain and pelvic tumor. One case was with immense amount of ascitis and the other two were with pregnancy. All the cases had no history of taking pregestine. Light microscopy showed that part of all the cell nuclei were bizarre, accompanying with double or multiple nuclei in which rather big and reddish staining inclusion bodies were obtained (D = 7 - 26 micro m), and the mitotic figures were 0 - 2/10 HPF. Among 20 cases with immunohistochemical staining, markers indicating muscle cells in origin were positive in the bizarre cells, 15 of which (75%) with negative or weak positive PCNA, and 18 of which (90%) with negative ER. There were significant difference between the studied and control groups (P = 0.027, P < 0.005 respectively) and in addition, PR was positive in both these two groups. A majority of the nucleus inclusion bodies was SMA positive. Follow-up records demonstrated so far no recurrence cases obtained.

CONCLUSIONSUterine atypical leiomyoma belongs to benign tumor, although its shape is bizarre. In this group, the morphology changes are correlated with pregnancy, but not with pregestine. The expression of immunohistochemistry shows certain features, and is important to identify uterine bizarre leiomyoma with leiomyosarcoma and STUMP in pathological diagnosis.

Adult ; Female ; Humans ; Immunohistochemistry ; Leiomyoma ; metabolism ; pathology ; Middle Aged ; Pregnancy ; Uterine Neoplasms ; metabolism ; pathology