AIM: To observe the alterations of matrix metalloproteinases (MMPs) and TIMPs (the inhibitor of MMPs) and to study the influence of a new endothelin receptor antagonist CPU 0213 on MMPs mRNA and TIMPs mRNA in rats with hypertrophic myocardium induced by L thyroxin (L thy). METHODS: Male Sprague Dawley rats were randomly divided into three groups and sc administrated suspension of L thy ( 0.4 mg?kg -1 ?d -1 ) for consecutive 10 d except for normal group. On the 7th day, the rats treated with L thy were given CPU 0213(ig, 100 mg ? kg -1 ?d -1 ) for 3 d . The whole collagen content in myocardium was measured. Relative LV myocardial mRNA levels of MMPs (MMP 2, MMP 9) and tissue inhibitor (TIMP 1, TIMP 2) were detected with semi quantitative RT PCR. RESUITS: The whole collagen content in myocardium induced by L thy decreased but it increased in the group CPU 0213. The expression of MMPs (MMP 2, MMP 9) mRNA was downregulated in L thy group and the expression of TIMPs mRNA was upregulated in L thy group markedly. Treated with CPU 0213, the expressions of MMP 9 and TIMP 1 mRNA were downregulated, whereas the expression of MMP 2 mRNA coming from CPU 0213 group tended to upregulate. But there was no statistical significance among these groups. CONCLUSION: CPU 0213 can inhibit the expression of MMPs and increase collagen content, which can improve heart function.

OBJECTIVE To describe the sonographic features of carotid body tumor(CBT), and determine the utility of ultrasonography as a diagnostic study in the preoperative patients. METHODS Sonograms of 60 patients with 65 CBT were reviewed with gray scale and duplex Doppler sonography. The evaluated features included the location, size, margins, shape, internal echogenicity, the relationship between the tumor and the carotid artery,and blood flow velocity. RESULTS All carotid body tumors were located at the carotid artery bifurcation. Well-defined, solid, weakly hypoechoic masses were noted on gray scale sonography in the carotid bifurcation. Color Doppler sonography showed hypervascularity in 61 masses. Pulsed Doppler analysis of blood flow within the tumor mass was possible in 61 CBT, and low-resistance waveforms were obtained from multiple sites within the mass in all cases. CONCLUSION The ultrasound characteristics of the CBT possess specificity to some extent. Duplex Doppler ultrasound can provide the relationship between the tumor and the carotid artery,and provide important information of intratumor blood flow,which has important value in the diagnosis of CBT.

Microbubble contrast agents for ultrasound (US) have been developed and clinically applied in recent years. Contrast-enhanced ultrasound (CEUS) has been widely used in the imaging of liver and other organs such as kidney, pancreases, spleen, prostate, ovarian, uterus as well as abdominal trauma, showing promising values in the diagnosis and differential diagnosis of various diseases. This article reviews the recent development and future protential clinical applications of CEUS.
Contrast Media ; administration & dosage ; Diagnosis, Differential ; Drug Delivery Systems ; Humans ; Microbubbles ; Ultrasonography ; methods

Objective To observe the ultrasonographic features of local chest wall tumor recurrence after mastectomy for breast cancer and its clinical and histopathological characteristics. Methods The ultrasonographic features, clinical and histopathological characteristics of 27 patients with local chest wall tumor recurrence after mastectomy confirmed histopathologically were retrospectively reviewed. Results The disease-free intervals of twenty-seven patients ranged from 3 to 129 months [mean (31.9±31.4) months]. Most of the recurrence(18/27, 66.7%) occurred within 3 years after mastectomy. The clinical manifestations were:7 cases (7/27, 25.9%) with regional skin redness and swelling, red rash or ulceration on chest wall associated with or without palpable mass, 20 cases(20/27, 74.1%) with chest wall palpable masses without obvious skin change. On ultrasonography, 2 cases showed diffuse inifltrative type with ill-deifned inhomogeneous hypoechoic lesion and skin thickening. And twenty-ifve cases(43 lesions) showed mass type with a lesion size range of 5.4-114.7 mm [mean (24.4±21.6) mm]. Among them, 32 lesions were located near to the operation incision scar, 36 involved muscle layer, 38 were hypoechoic, 31 had irregular shape, 24 had indistinct margin, and 31 had blood lfow signal. In addition, calciifcation, halo, and taller-than-wide shape were absent in all 43 lesions. Conclusions The tumor recurrence often occurred within 3 years after mastectomy in high-risk patients. Ultrasonographic feature of chest wall recurrent lesion is of great value in the diagnosis.

Objective To investigate the correlation of ultrasonographic characteristics and pathologic features for malignant mullerian mixed tumor(MMMT)and determine the diagnostic value of ultrasonography.Methods The uItrasonographic features of 10 MMMTs were analyzed retrospectively and the sonographic findings were compared with histological results and discussed the correlation.Results The morphologic features of US and histology were well associated.Large,solitary lesion,ill-defined irregular shape,honeycombed heterogenous echo-pattern,scattered cystic areas and increased irregular peripheral/internal color flow were typical US findings.Logistic regression analysis showed the type of tumor liquefaction to be the most significant independent predictor of vascularity.Conclusions Ultrasonography is helpful for the diagnosis of MMMT,the uhrasonographic characteristics of MMMT are well correlated to its pathologic features.

With the continuous development of the reform of the state marketing economic system and the health care service system, the medical scientific research institutions have paid much more attention to the innovation of operating managerial patterns in practice. As an important and advanced managerial patter in thought and theoretical aspects, the construction of enterprise culture has played a major role in many institutions. In this paper, the general background, culture deposits and innovation in institutions were discussed;the ideas and actions in practice of culture innovation in new situation were proposed via practical activities taken place at the Institute.

To observe local inflammation reaction and vein thrombosis on rabbit ear vein with methotrexate , ceftri-axone sodium and normal saline .With the extension use of drugs , the numbers of inflammation reaction and throm-bosis in each group were increased , and antibiotic and chemotherapy drug group had a higher rate than the normal saline group .There was a statistically significant difference of the inflammation reaction between the three test groups on the 3rd and 7th day (P<0.05), and a statistically significant difference of thrombosis between the three test groups on the 7 th day ( P<0.05 ) .The physical-chemical properties of drugs and use of time were factors in-fluencing inflammation reaction and thrombosis .

Objective To explore the correlation between family function and clinical symptom in depression and its effect on suicidal ideation.Methods Forms of General information,Hamilton Depression Scales (HAMD),Self-rating Idea of Suicide Scale (S1OSS),Symptom Checklist (SCL-90) and Family Adaptability and Cohesion Scale,Second Edition (FACESII-CV) were used to the survey in which 125 voluntary subjects were involved who were then under the treatment in the hospital.All the subjects were divided into two groups by SIOSS standard for evaluation,including the suicidal ideation group (SIOSS ≥ 12 points;81 cases),and the non-suicidal ideation group (SIOSS ＜ 12 points;44 cases).Results (1) The scores showing FACESII-CV of suicidal ideation patients were evidently lower than those the non-suicidal ideation patients (P ＜ 0.05).The highest proportion of the family type was intermediate type in non-suicidal ideation patients and extreme type in the suicidal ideation patients.(2) The scores showing SCL-90 of suicidal ideation patients were evidently higher than those the non-suicidal ideation patients (P ＜0.05).(3) The scores of family cohesion had negatively correlated with interpersonal sensitivity,hostility,paranoid ideation of SCL-90.The scores of family adaptability had negatively correlated with total scores,total average,positive symptom distresslevel,somatization,obsessive-compulsive,interpersonal sensitivity,depression,anxiety,hostility,paranoid ideation,and psychoticism of SCL-90.The multiple linear regression was Y =2.523X1 (depression)-0.144X2 (family adaptability) + 13.659.Conclusions It is revealed that the suicidal ideation depression patients suffer less sufficient family cohesion and adaptability than non-suicidal ideation.Its clinical symptoms are more complex,diverse,and severe.Most of them have an intermediate type family in non-suicidal ideation depressions,and the most common family type in the suicidal ideation depressions is extreme type family.For the suicidal ideation depression patients,the worse the family function,the more severe the clinical symptoms.Degree of depression and family adaptability has speculated significance to suicidal ideation.

Compared with open surgery, laparoscopic surgery (LS) provides distinct advantages. However, LS is limited because of the lack of flexibility and tactile feedback. These drawbacks may result in prolonged learning curve and increase in difficulty of sur-gery, particularly for reconstructive LS. This study aimed to determine more efficient methods and resolve several limitations, such as surgical education, LS, surgical procedures (suturing and knotting), iconography, and biotechnology in LS. This review provides a broad overview of studies related to this field.

During epidemiology teaching,it is important for teachers to use person-based teaching method according to different specialty bachelors to improve the teaching quality.