Adult ; Female ; Humans ; Myocardial Infarction ; complications ; Pregnancy ; Pregnancy Complications, Cardiovascular

Objective To investigate the mechanism of tazarotene in active psoriasis vulgaris. Methods HB-EGF mRNA in active psoriatic lesions before and 10 days after the treatment with tazarotene was detected by hybridization in situ. Results There was nearly no expression of HB-EGF mRNA in psoriatic lesions (9.1%); after the treatment with tazarotene, there was expression of HB-EGF not only in basal layer (95.5%), but also focal expression in suprabasal layers of epidermis (77.3%). Conclusion Tazarotene can inhibit proliferation and induce apoptosis of keratinocytes though upregulating expression of HB-EGF in psoriatic epidermis.

Objective:To investigate the differences in related indices of ulcerative colitis (UC) respectively induced by free drinking and intragastric administration of dextran sodium sulfate (DSS) in mice to provide experimental reference for the optimization of UC model.Methods:Totally 30 C57BL/6 mice were randomly divided into the normal control group,free drinking group and intragastric administration group with 10 ones in each.The mice drank water freely with free drinking or intragastric administration of 3% DSS solution at the dose of 4 g·kg-1·day-1 for 7 days to establish the UC model.The differences in disease activity index (DAI),histological damage sore and activity of myeloperoxidase (MPO) among the groups were compared.Results:Two mice died during the experiment in the free drinking group,and DAI of survival mice was (8.8±1.6).There was no death of mice in intragastric administration group,and DAI was (9.0±0.8),and there was no significant difference in DAI between the groups (P>0.05),while the coefficient of variation in the free drinking group was higher than that in the intragastric administration group (18.7 vs 8.6).The colonic histological damage score of the free drinking group and the intragastric administration group was 24.8±4.2 and 27.0±2.8,respectively,which was typical inflammatory change with no significant difference (P>0.05),while the coefficient of variation of the free drinking group was higher than that of the intragastric administration group (16.9 vs 10.4).MPO of the normal control group,free drinking group and intragastric administration group was (0.41±0.03),(2.32±0.34) and (2.05±0.18) U·g-1,respectively.Compared with the normal control group,significant difference in MPO was shown in the free drinking group and the intragastric administration group (P<0.01),while there was no significant difference in MPO between the groups (P>0.05),and the coefficient of variation in the free drinking group was higher than that in the intragastric administration group (14.7 vs 8.8).Conclusion:Both free drinking and intragastric administration of DSS can successfully induce the UC model in mice.Compared with the free drinking group,the intragastric administration group has low mortality rate and low coefficient of variation.Therefore,intragastric administration has more advantages than free drinking in inducing the UC model in mice.

Gene chip is a research tool on molecular biology which can detect generous gene expression rapidly.The studies on gene chip of leiomyoma have revealed the changes of gene expression related to cell growth,proliferation,apoptosis,metabolism,angiogenesis,formation of extracellular matrix,cell differentiation and immunity.The article reviews the advance on gene chip of leiomyoma and approaches the pathogenesis of leiomyoma on molecular level.

AIM: To discuss the clinical applications of methods to localize nasal cut ends and the effects of Z-plasty in the surgeries for lower eyelid longitudinal laceration combined with lower lacrimal canaliculi disruption.
METHODS: From September, 2010 to October, 2013, a total of 37 patients ( 37 eyes ) with lower eyelid longitudinal laceration combined with lower lacrimal canaliculi disruption were operated for anastomosis of lacrimal canaliculi disruption and suture of lower eyelid longitudinal. Different methods to search for the nasal cut ends of lacerated lacrimal canaliculi, such as “under a microscope directly”, “guided by probing needle” and“pigtail curved probe”. Then, to repair lower eyelid longitudinal laceration with Z-plasty transposition flaps. Follow up was 3mo~2a after operation.
RESULTS: All nasal cut ends could be found successfully on 37 patients;Lacrimal duct unobstructed in 31 patients (83. 8%), improved in 5 patients (13. 5%), invalid in 1 patient (2. 7%),the overall successful rate was 97. 3%; the eyelids repair was satisfactory, small scars, the appearance and function was normal.
CONCLUSION: The nasal cut ends can be found successfully by “directly under a microscope”, “guided by probing needle” and“pigtail curved probe”;the effect of silicone drainage tube used as lacrimal canaliculi bracket is satisfactory; most patients gained excellent recovery for both appearance and function after Z-plasty.

Objective To evaluate the clinical efficacy and safety of domestic Sirolimus-eluting stents (Firebird) and imported Zotalimus-eluting stents ( Resolute) in the treatment of patients with unprotected left main coronary artery disease ( ULMCA) . Methods We retrospectively enrolled 76 patients with ULMCA treated by percutaneous coronary intervention (PCI) under the guidance of IVUS in our hospital. According to the different stents used in the procedure, the patients were divided into two groups: Domestic Sirolimus-Eluting Stents group (Firebird group, n = 42) and Imported Zotarolimus-Eluting Stents group (Resolute group, n = 34) . We analyzed the baseline characteristics, coronary artery lesion characteristics, stenting strategies and any changes in left ventricular ejection fraction ( LVEF) in both groups and investigated the long-term clinical outcomes. Results There were no significant differences in the baseline characteristics, the SYNTAX scores of the coronary artery lesion and the rate of complete revascularization between the two groups. Compared with that in Firebird group, there were more cases involving the distal left main (79. 4% vs. 45. 2% , P ﹤ 0. 05) and more patients using two stents strategies (29. 4% vs. 7. 1% , P ﹤ 0. 05) in the Resolute group. The change in LVEF post-PCI had no difference between the two groups. The patients were followed up for a mean of (23. 3 ± 10. 7) months. During the follow-up period, the occurrence of MACCE had no significant difference between the two groups. In the Firebird group, there were one sudden cardiac death, one nonfatal myocardial infarction, one stroke and five patients with recurrence of angina pectoris. In the Resolute group there were one sudden cardiac death, one target lesion revascularization and four patients with recurrence of angina pectoris. Conclusions Compared with the imported Zotalimus-Eluting Stents, the domestic Sirolimus-Eluting Stents are safe and effective in the treatment of patients with unprotected left main lesions under the guidance of IVUS. The two kinds of stent showed similar long-term clinical outcomes.

AIM: To observe the relationship between the immune deviation of Th1 and Th2 cell clones and class Ⅱ major histocompatibility complex (MHC) antigen expression in different stages of acute rejection in transplanted hearts. METHODS: Heart transplantation were performed in rats.Isografts and non-transplanted animals were used as control group. Donor class II MHC antigen expression were detected with monoclonal antibodies and immunostaining technique and the amount of type Ⅰ and Ⅱ cytokines mRNA expression were detected by semiquantitative RT-PCR in cardiac allografts. RESULTS: Myocardial IL-2 mRNA and donor class Ⅱ MHC antigen expression were significantly in creased, accompanied with development of acute rejection( P

Objective To investigate the role of heparin binding epidermal growth factor-like growth factor(HB-EGF)in active psoriasis vulgaris.Methods HB-EGF mRNA and protein were detected by hy-bridization in situ and immunohistochemistry in normal skin tissues,lesional and non-lesional psoriatic skin of progressive stage.Results In normal skin tissues,the stain of HB-EGF mRNA and protein was located in the basal layer of epidermis(100.00%)and there was only a little expression in the suprabasal layers(16.67%).Focal overexpression was found in the suprabasal layers of non-lesional and peri-lesional psoriat-ic skin(88.00%,80.00%respectively);however,there was no HB-EGF mRNA protein expression in the superabasal layers of the central part of psoriatic lesions(0),and nearly no expression in the basal layer(4.00%).Conclusion HB-EGF may play an important role in the pathogenesis of early psoriasis.

Objective:To investigate the role of reducing resistance and distraction in rapid teeth movement and its reliability by establishing the Beagle dogs’ experimental model.
Methods:The left or right sides in mandibles of 20 beagles were randomly operated with different treatments:distraction twice a day through reducing resistance;distraction 6 times a day through reducing resistance;conventional distraction through reducing resistance;and conventional distraction (the control group). Each treatment was carried out in 10 sides. The pulp vitality, tooth mobility and distance of teeth transportation were evaluated at different time points:before the distraction, distraction after 15 days, retaining 30 days after 15 days of distraction. The degree of inclination, root resorption and alveolar bone density of the compressive areas were evaluated by cone-beam computed tomography images.
Results:The distance of teeth transportation was similar in groups distraction twice daily and 6 times a day through reducing resistance (P>0.05), but their speed of transportation was significantly higher than that of conventional distraction through reducing resistance. The conventional distraction group had the lowest speed of transportation. The pulp vitality of distracted teeth was normal, and no root comprehensive resorption and periodontal defect were found. Distracted teeth in the reduced resistance and distraction groups (13.9°±3.5°) tipped more that in the conventional distraction group (6.6°±1.3°) (P<0.05).
Conclusion:Reducing resistance and distraction are inseparable factors to realize fast teeth moving. The rate of orthodontic tooth movement can be accelerated through resistance reduction and periodontal distraction without obvious unfavorable effects but at minimal acceptable teeth inclination.

Objective To discuss the clinical efficacy of closed reduction and plaster splint fixation ( CRPSF) in the treatment of gerontal patients with distal radius fractures ( DRF) .Methods 76 elderly patients with DRF who treated by CRPSF were selected .According to AO classification of fractures ,the patients were divided into three groups,the A group had 27 cases;B group had 26 cases,C group had 23 cases.The treatment effect was evalua-ted by analyzing the follow-up data,the corresponding imaging measurement parameters and clinical scores .Results All patients had 12-month clinical and imaging follow-up.In the last follow-up, the arm-shoulder-hand dysfunction score and palmar angle ,ulnar deviation angle of A and B group were significantly better than those of C group , the differences were statistically significant(all P<0.05),the difference between A and B group was not statistically sig-nificant (P>0.05).In the last follow-up,the satisfaction score of C group was slightly lower than that of the A or B group,but had no statistically significant difference (P>0.05).Conclusion CRPSF in the treatment of gerontal pa-tients with DRF has good function and imaging effects ,and the improvement level has a certain relationship with the degree of fracture,but has no significant impact on the patients'satisfaction.