Objective To determine the placental transfer of epidural levobupivacaine for cesarean section. Methods Sixty parturients (ASA ⅠorⅡ) aged 24-35 yr weighing 60-80 kg undergoing elective cesarean section under epidural anesthesia were studied. Epidural anesthesia was performed at L1,2 or L1,3 interspace. The catheter was advanced 3 cm cephalad into the epidural space. A test dose of 0.5% levobupivacaine 5 ml with 1:200 000 epinephrine was injected. If there were no signs of subarachnoid injection in 5 min, 9-12 ml of 0.5% levobupivacaine was administered twice at 5 min interval. Arterial blood samples were taken from the double- clamped umbilical cord segment at delivery for determination of blood pH. Apgar scores at 1 and 5 min after birth were recorded. Blood samples were taken from maternal and umbilical vein for determination of plasma levobupivacaine concentration by high performance liquid chromatography ( HPLC). Results The pH of the umbilical arterial blood was ≥ 7.25. The Apgar scores at 1 and 5 min after birth were ≥ 7.0. The levobupivacaine concentration of maternal and umbilical venous blood was 0.35±0.24 and (0.24 ±0.21) μg/ml respectively at the time of delivery. The ratio of umbilical and maternal venous blood levobupivacaine concentration was 0.7 ± 0.3. Conclusion Epidural levobupivacaine can cross the placenta during cesarean section. The ratio of umbilical and maternal venous blood levobupivacaine concentration is 0.7.

Kidney ; growth & development ; injuries ; Regeneration ; Stem Cells ; cytology ; Wound Healing

0.05).Intracellular Ca2+ FI in rat ventricular myocytes induced by KCl was inhibited significantly in group B2 and B3 compared with that in group C(P

Objective patients with pSS and 30 cases of healthv contrels.The streptavidin immunohistochemical staining was performed to detect the expression and distribution of MMP-9 and CD147 in labial salivary glands.Quantitative analysis was performed by image analysis software-image plus 5.0 at the site of positive expression of MMP-9 and CD147.The correlation between their expression and the infiltrating lymphocyte foci per 4 mm2 of labial gland was analyzed by SPSS software as well as the correlation between the expression of MMP-9 and CD 147 in the salivary glands of patients with pSS.Results MMP-9 was hiKhly expressed in labial salivary glands from 52 patients with pSS and 30 healthy controls,but the expression of MMP-9 in pSS was stronger compared with that of healthy controls(P<0.01).There was a significant positive correlation between lymphocyte foci score and up-regulated expression of MMP-9 in labial salivary glands from 52 patients with pSS(P<0.01).CD147 was highly expressed in labial salivary glands from 52 patients with pSS and 23 healthy controls，but over-expression of CD147 in PSS was more Drominent compared with that of controls(P<0.01).There was a significant positive correlation between lymphocyte foci score and up-regulated expression of CD147 in labial salivary glands from 52 patients with pSS(P<0.01).The expression of MMP-9 and CDl47 was detected in ductal and acinar epithelial cells,lymphocyte foci in pSS.There was linear correlation between the expression of MMP-9 and CDl47 in the salivary glands of patients with pSS(P<0.01).Conclusion The results of this study suggest that the abnormal expression of MMP-9 and CD 147 is involved in the pathogenesis of pSS and play a crucial role.The interaction of MMP-9 and CD147 may be one of theimportant mechanisms leading to labial salivary glands destruction found in pSS.

Objective To study the expression of E-cadherin( E-cad), p-catenin(β-cat) in labial salivary glands of patients with primary Sj(o)gren's syndrome (pSS) in order to explore their role in pathogenesis. Methods Biopsies of labial salivary glands were obtained from 52 patients with pSS and 30 healthy controls. The immunohistochemical staining was used to detect the expression of E-cad and β-cat. Anti-SSA and anti-SSB antibodies were measured. Semi-quantitative analysis was performed by image analysis software. Ultra-structural changes was used by electron-microscopic techniques. Results ① The area of expression, optical intensity and the accumulated optical intensity of the E-cad group [(2513±1086) μm2, 0.212±0.041, 566 ±297 ] were lower than normal controls. The expression level was reduced as the increase of lymphocyte infiltration focus. ② The area of expression, the optical density and the accumulated optical density of the β- cat group [(12 324±7883) μm2, 0.113±0.031, 566±297] was lower than those of the control group. The expression level was reduced as the increase of the lymphocyte infiltration focus. ③ The E-cad expression and the p-cat expression was positively correlated in the labial gland of patients with pSS. ④ Howev-er, there was difference in the expression of E -cad and β -cat between patients with positive SSA and negative SSA antibodies. Conclusion In salivary samples, the expression of both E-cad and p-cat in patients with pSS is lower than those of the controls. Anti-SSA/SSB antibodies are important parameters of pSS and they may be involved in the pathogenesis of pSS.

OBJECTIVETo explore the effect of Qingfei Huoxue Recipe (QHR) combined azithromycin in treatment of intractable pediatric mycoplasma pneumonia.

METHODSTotally 124 intractable pediatric mycoplasma pneumonia patients at our hospital were recruited in this study, and randomly assigned to the treatment group and the control group, 62 in each group. Patients in the control group took azithromycin, while those in the treatment group additionally took QHR. All patients received omnibearing systematic nursing. Therapeutic efficacy, clinical indices (such as disappearance time of cough and rales, recovery time of body temperature) , and the incidence of adverse reactions were observed.

RESULTSAfter treatment the total effective rate was 91.94% (57/62 cases) in the treatment group and 77. 42% (48/62 cases) in the control group with statistical difference (P < 0.05). Compared with the control group, disappearance time of cough and rales, recovery time of body temperature were obviously shortened in the treatment group with statistical difference (P < 0.01). There was statistical difference in the incidence of adverse reactions between the two groups [3.23% (2/62 cases) vs 38.71% (24/62 cases) , P < 0.01].

CONCLUSIONIn clinical treatment for intractable pediatric mycoplasma pneumonia, Chinese medicine combined Western medicine plus scientific and systematic nursing showed more obvious advantages with significant efficacy, which was worth spreading.

Azithromycin ; Biomedical Research ; Child ; Cough ; Drugs, Chinese Herbal ; therapeutic use ; Humans ; Medicine, East Asian Traditional ; Phytotherapy ; Pneumonia, Mycoplasma ; drug therapy

Ankylosis ; Humans ; Respiration Disorders ; Stomatognathic System Abnormalities ; Tongue ; abnormalities ; Trismus

Animals ; Apoptosis ; physiology ; Cell Proliferation ; Epithelial Cells ; transplantation ; Female ; Ki-67 Antigen ; analysis ; Kidney Tubular Necrosis, Acute ; pathology ; Male ; Mesenchymal Stem Cell Transplantation ; ethics ; Rats ; Rats, Sprague-Dawley

Objective To evaluate the effect of dexmedetomidine on heart rate (HR) of rabbits through in vitro and in vivo experiments, and investigate the mechanism by which dexmedetomidine lowered HR.Methods In vitro experiment Healthy adult rabbits of both sexes, weighing 2.0-2.5 kg, aged 8-10 weeks, were studied.The 24 isolated hearts passively perfused in a Langendorff apparatus were randomly divided into 3 groups (n =8 each) using a random number table: control group (group C) , and dexmedetomidine 3 and 30 ng/ml groups (D1 and D2 groups).The isolated hearts were continuously perfused with K-H solution for 45 min in group C.After 15 min of equilibration, the isolated hearts were perfused for 30 min with K-H solution containing dexmedetomidine 3 and 30 ng/ml in D1 and D2 groups, respectively.At 15 min of equilibration, and at 15 and 30 min of perfusion with K-H solution containing dexmedetomidine, HR and left ventricular systolic pressure (LVSP) were recorded.In vivo experiment Twenty-five healthy adult rabbits of both sexes, weighing 2.0-2.5 kg, aged 8-10 weeks, were randomly divided into 5 groups (n=5 each) using a random number table: dexmedetomidine 3, 6, 9, 12, and 15 μg/kg groups (D3, D6, D9, D12, D15groups), to receive the corresponding doses of dexmedetomidine which was intravenously infused over 10 min.HR and mean arterial pressure were monitored and recorded before administration (T0) , and at 15 and 40 min after administration (T1,2).The correlation between doses of dexmedetomidine and change rate of HR was tested by Spearman correlation analysis.Results In vitro experiment Compared with group C, no significant changes were found in HR and LVSP at each time point in D1 and D2 groups (P＞0.05).In vivo experiment Compared with those at T0 , HR at T1 in D6 and D9 groups, HR at T1,2 in D12 and D15 groups, and mean arterial pressure at T1,2in D6, D9, and D12 groups were significantly decreased (P＜0.05) , and no significant change was found in HR at each time point in group D3 (P＞0.05).The correlation coefficient between doses of dexmedetomidine and change rate of HR was 0.944 (P＜0.05).Conclusion The mechanism by which dexmedetomidine lowers HR of rabbits is not related to direct inhibition of sinoatrial nodes, but associated with the balance of autonomic nervous system.

Aim To study the changes of the biological behavior of dermal fibroblasts in Ⅲ skin burns wound in rats using chitosan.Methods Wistar rats were randomly divided into 5 groups as follows:1% chitosan(W/V)group,2% chitosan(W/V)group,4% chitosan(W/V)group,bFGF(basic fibroblast growth factor) group and the control group.Rats were made for Ⅲ skin burns.The wound healing time was recorded,and the wound healing rate was calculated.Then the cell cycle and apoptotic dermal fibroblasts were determined and the amount of Hydroxyproline(HOP) in the skin tissue was analyzed.Results The wound healing rate of 4% chitosan(W/V) group was higher and the wound healing time of 4% chitosan(W/V) group was shorter than that of the control group.On the 7th,14th day post-injury,the content of protein of 4% chitosan(W/V) group was higher than that of the control group.The content of HOP of 2% and 4% chitosan(W/V) group was highest on the 7th day post-injury. Compared with that in control group,the percentage of cells of S stage in 4% chitosan(W/V) group was aboundant,and was reduced in apoptotic dermal fibroblasts.Conclusion The changes of cellular biological behaviors might be one of the mechanisms of that Chitosan could promote the wound healing of Ⅲ skin burns in rats significantly.