Objective To investigate the antitumor effect of cynanauriculoside A(CA) isolated from the root of Cynanchum auriculatum and its effect of apoptosis induction in tumor cells.Methods CA was evaluated for its cytotoxicity in vitro against MCF-7,BEL-7402,and HO-8910 cells by determining MTT assay and its antitumor effects in vivo on S180 tumor-bearing mice by calculating tumor-inhibited rate.Measures of apoptosis including Wright′s-Giemsa staining and flow cytometry(FCM) assay were involved to explore the mechanism.And the toxcity of CA on normal cells was also evaluated on in vitro cultured rat cortical neurons.Results CA showed a definite cytotoxicity to three tumor cell lines with IC50 in the range of 35.68—39.78 mg/L.And it significantly inhibited the tumor growth of S180 tumor-bearing mice at the dose of 40,50,and 160 mg/kg by ig administrated,the inhibitory rates were 20.0%,28.0%,and 48.1%,respectively.At the concentration of 80 mg/L,CA induced obvious apoptosis in MCF-7 cells(P

OBJECTIVE:To establish a method for the contents determination of harpagoside and stilbene glycoside in Shuang-shen xiaolong granule. METHODS:HPLC of harpagoside was performed on the column of Kromasil 100-5 C18 with mobile phase of acetonitrile-1% acetic acid solution (gradient elution) at flow rate of 1.0 ml/min,detection wavelength was 278 nm,column temperature was 25 ℃ and volume injection was 20 μl. HPLC of stilbene glycoside was performed on the column of Kromasil 100-5 C18 with mobile phase of acetonitrile-water(19∶81,V/V)at flow rate of 1.0 ml/min,etection wavelength was 320 nm,column temperature was 25 ℃ and volume injection was 10 μl. RESULTS:The linear range was 0.555 8-8.893 4 μg for harpagoside(r=0.999 9)and 0.010 6-0.340 2 mg for stilbene glycoside(r=0.999 6);RSDs of precision,stability and reproducibility tests were no more than 1.80%;recoveries were 97.30%-101.35%(RSD=1.43%,n=6) and 96.67%-100.83%(RSD=1.48%,n=6),respec-tively. CONCLUSIONS:The method is simple,accurate and reproducible,and can be used for the contents determination of harpa-goside and stilbene glycoside in Shuangshen xiaolong granule.

Objective To investigate the effects of pituitary adenylate cyclase activating polypeptide (PACAP) and its receptor (PACAP-R) on the pathogenesis of psoriasis. Methods The expression of PACAP and PACAP-R in the skin from 10 normal controls, 25 psoriatic lesions and non-lesional skins was measured by immunohistochemical technique. Results The expression of PACAP and PACAP-R was significantly lower in the psoriatic lesional skins than that of the non-lesional skins. The area density and mean absorbance of PACAP and PACAP-R in the lesional skins were significantly lower compared with those in the non-lesional skins (P

Purpose To investigate the expression and significance of HLA-G in ovarian serous carcinoma ( OSC) . Methods HLA-G antigen was immunohistochemically labeled on paraffin-embedded sections of 108 OSCs. The relationship between HLA-G expression and the clinicopathologic parameters was studied. Results The positive expression of HLA-G was observed in 58. 33% (63/108) of OSC tissues. Positive expression of HLA-G was significantly related with lymph node metastasis, recurrence, occurrence site, FIGO stage and MDACC grading system (P<0. 05). In survival analysis, the expression of HLA-G was significantly relevant to prognosis (P=0. 015). Multivariate Cox analysis showed the expression of HLA-G was an important prognosis factor of OSC (P=0. 01). Con-clusion The positive expression of HLA-G could predict high grade and advanced stage of OSC as well as poor prognosis. Also it could distinguish high-grade OSC from low-grade OSC.

Objective There are a few reports on rats with spontaneous congenital cataract in China .The purpose of this study was to investigate the morphological changes of lens in rats with spontaneous congenital cataract . Methods 24 d, 1-year rats with cataract and microphthalmos cataract and normal rats (n=5) were selected as research objects .Their lens were observed by a slit lamp microscope and taken photos in front of them , followed by examination through light micrograph and transmission electron micros-copy. Results Rats with microphthalmos cataract showed narrowed palpebral fissure and broaden nucleus while rats with cataract showed normal palpebral fissure and narrowed nucleus .As for 24 d,1-year rats with microphthalmos cataract , the fibers of their lens showed derangement and vacuole-like degeneration by light microscope , in addition, the abnormal connection between fiber cells were observed by electron microscopy .As for 1-year normal rats , the fibers were in consistent structure and regular arrangement without cell ingredient . Conclusion The appearance and morphological changes of the lens in rats with spontaneous congenital cataracts are in consistence with the pathological changes of cataracts , which is appli-cable in further research on the pathogenesis of cataract .

ObjectiveTo investigate the continuous pathological features of biopsy specimens from five cases of small bowel allotransplantation (SBT) in order to provide more reliable information for the diagnosis and treatment of acute rejection (AR) in SBT.Methods324 biopsy specimens of intestinal mucosa after SBT from 5 patients were collected and studied by histology,histochemistry and electron microscopy.ResultsIn the early stage after operation (0～3 months),AR IND-1 grade was diagnosed for four times on 3 of 5 patients.During 3-6 months,AR IND-1 grade for three times was diagnosed in 2 cases,and AR 2 grade for two times during 7 ～ 12 months. All the patients suffered ischemia reperfusion injury, lymphatic vessel reconstruction and AR.Conclusion The pathological examination of biopsy specimens of intestinal mucosa is still the most reliable detecting method to diagnose AR,and continuous observation may play an important role to monitor the occurrence,development,and treatment response of AR. The final diagnosis of AR depends on structure of intestinal mucosa,crypt epithelium injury and inflammatory cells infiltration. The communication among the pathologist and surgeon is the best way to reduce misdiagnoses.Ultrastructural examination is used to verify the pathogenic microorganism.

Objective To investigate the clinical presentation, endoscopy and pathological features of subclinical cellular rejection (SCR) of small bowel allotransplantation. Methods Three times of SCR in a patient after isolated small bowel transplantation were studied by endoscopy and microscopy, and the clinical data and literature were reviewed. Results SCR was an unusual type of acute rejection after small bowel transplantation. SCR showed low-grade morphological changes of acute rejection, and may be relived after low-dose steroid or bolus steroid was given. Conclusion The causes of SCR are not clear now. SCR may be the early stage of clinical acute rejections, and may be correlated with unexpected high grade acute rejection, and chronic loss function of graft. The biopsy through ileoscopy is a "golden standard" of diagnosis of SCR in small bowel transplantation.However, the vessel lesions of graft, ileus, and inflammation should be excluded before diagnosis.

Objective: To improve the limitation and stability of tissue processing on mucosa from small intestine transplantation and to provide better evidence of pathological diagnosis for the acute rejection on small intestine transplantation. Method:92 samples of mucosa from small intestine transplantation were reviewed.There were three methods of tissue processing (ultrasonic wave and microwave as well as routine) were adopted.The results were analyzed with statistical methods. Results: Among 18 samples processed by the method of ultrasonic wave,4 samples were A grade (22.22%). Among 50 samples processed by the method of microwave,30 samples were A grade (60.00%). Among 24 samples processed by the method of routine,13 samples were A grade (54.17%).The Chi Square Test suggested that there was statistic difference among three processing methods. Conclusions: Microwave is the best method of tissue processing on mucosa of small intestine transplantation and for the diagnosis acute rejection.

Purpose To investigate the clinical manifestations, imaging characteristics and pathological features of mesenteric lym-phangioma. Methods The clinical pathological and imaging features of 14 cases diagnosed mesenteric lymphangioma were retrospec-tively analyzed. Results 14 cases of mesenteric lymphangioma appeared diversity of clinical symptoms, most presenting abdominal pain and discomfort. Cystic lesion had often been diagnosed and only 2 cases were recognized as lymphangioma by imaging examina-tion. These tumors usually located in the mesentery and some involved intestinal wall. Microscopically, the tumors were consisted of ir-regular cavities, lined with simple flat endothelial cells, filled with lymph fluid and lymphocytes. All cases showed strong D2-40 immu-noreactivity. Conclusion Mesenteric lymphangioma is a benign tumor with serious complications, and preoperative CT imaging stud-ies may prompt the diagnosis. Resection completely is the preferred treatment.

Objective At present, there are few studies about myelolipoma within adrenal cortical adenoma.Our aim was to provide more basis for correct diagnosis and treatment by investigation into its clinical and pathological features.Methods The clinical and pathological data were retrospectively reviewed in 11 patients of myelolipoma within adrenal cortical adenoma, along with relative literature reviews.Results The median age of 11 patients (7 females, 4 males) was 49±9.5 years, among whom 3 patients presented Cushing's syndrome, 1 patient with more than 10 years' recurrent dizzy with hypertension, other 7 patients were found coincidently by routine examination.Adrenal mass were found by imaging examination.Pathologically, myelolipomas were in solitary nodule distribution and/or admixed with adrenal cortical adenomas.Myelolipomas were composed of variable admixture of mature adipose tissue and hematopoietic elements.Surgical treatment was performed for all 11 patients, and no relapse was found in 2 months' to 11 years' follow-up.Conclusion Myelolipoma within adrenal cortical adenoma is extremely rare, which is common in females.The patients may present with Cushing's syndrome, hypertension or without obvious clinical syndrome.All the patients are in favorable prognosis after surgical resection.