OBJECTIVEThe synthesis, biodistribution, and animal imaging of 99mTc- hydrazinonicotinamide-folate (99mTc-HYNIC-Folate) were studied as a folate receptor-targeted tumor imaging agent.

METHODSHYNIC-Folate was synthesized by a muti-step reaction and radiolabeled with 99mTc using tricine and trisodium phenylphosphine-3, 3', 3"-trisulfonate (TPPTS) as coligands. The radiochemical purity and stability of 99mTc HYNIC-Folate was measured. The biodistributions of 99mTc-HYNIC-Folate in normal mice and tumor-bearing mice were detected. Whole-body gamma imaging was performed using an athymic mouse tumor xenograft model.

RESULTSThe ligand HYNIC-Folate was successfully synthesized and characterized by hydrogen nuclear magnetic resonance (1HNMR) and mass spectrometry (MS). The radiochemical purity of 99mTc-HYNIC-Folate was 96% under optimal conditions. Data from gamma scintigraphy and the biodistribution in tumor-bearing mice showed that 99mTc-HYNIC-Folate predominantly accumulated in tumor, its uptake rate per gram tissue alpham was 5. 620+/- 0. 753. The uptakes of 99mTc-HYNIC-Folate in the other non-target tissues were very low, except it was high in the kidneys ( am was 41. 959 +/-6. 759) .

CONCLUSION99mTc-HYNIC-Folate has the potential to be used as a noninvasive radiodiagnostic imaging agent for the detection of folate receptor-positive human cancers.

Animals ; Female ; Mice ; Mice, Inbred BALB C ; Mice, Inbred ICR ; Neoplasms, Experimental ; diagnostic imaging ; Organotechnetium Compounds ; chemical synthesis ; pharmacokinetics ; Radionuclide Imaging ; Radiopharmaceuticals ; chemical synthesis ; pharmacokinetics ; Tissue Distribution

Objective To investigate the effect of cyclosporine blood level at first year after kidney transplantation on patients with a survival time over 10 years. Methods 380 patients with functional allograft, a survival time over 10 years and long-term administration of cyclosporine A (CsA) were studied, and received CsA-based treatments. According to the blood CsA level at the first year after kidney transplantation, patients were divided into five groups: group 1, blood CsA level was above 0. 208 μmol/L (1 μmol/L = 1201.9 μg/L), group 2, blood CsA level between 0. 166-0. 208μmol/L; group 3, blood CsA blood level between 0. 125-0. 166 μmol/L; group 4, blood CsA blood level between 0. 083-0. 125 μmol/L; group 5, blood CsA level less than 0. 083 μmol/L. Systolic blood pressure (SBP), diastolic blood pressure (DBP), serum creatinine(SCr), uric acid (UA), cholesterol (CH), triglyceride (TG), alanine aminotransferase (ALT), direct bilirubin (DBil) and total bilibubin (TBil), albumin (Alb), hemoglobin (Hb), count of white blood cells and positive rate of proteinuria in 5 groups at the 1st, 5th and 10th year after kidney transplantation were analyzed. Results At the 5th year SBP in groups 1 and 2 was higher than in groups 3, 4 and 5. UA level in group 5 was lower than other groups, and Alb level in group 5 was higher than other 4 groups. Proteinuria positive rate in groups 4 and group was lower than other groups. At the 10th year after kidney transplantation,indexes among 5 groups had no statistically significant difference, except for SBP, DBP, DBil and CH in some groups. There was also no significant difference in SCr level among 5 groups at the 5th or 10th year after transplantation. Conclusion Blood CsA levels at the first year after kidney transplantation has no significant effect on long-term allograft function. But higher level of CsA (＞0. 166μmol/L) at the first year maybe predict high rate of hypertension, high blood UA and proteinuria at the 5th and 10th year after transplantation.

Objective To evaluate the elastic score (ES) and strain ratio (SR) in papillary thyroid carcinoma patients, and analyse their relationship with serologic index. Methods Totally one hundred and six patients with thyroid neoplasm were divided into papillary thyroid carcinoma group (n=56) and thyroid adenoma group ( n=50) according to histopathology results. Another fifty cases of healthy people were chosen as normal control group at the same period. The ES and SR were evacuated by color Doppler ultrasonic diagnostic apparatus in three groups of patients. Thyroid stimulating hormone (TSH), thyroglobulin antibody (TgAb), and thyroid peroxidase antibody (TpoAb) were detected by electrochemiluminescence immunoassay. Data of galectin-3 (Gal-3), vascular endothelial growth factor (VEGF), and cytokeratin 19 fragment (Cyfra21.1) were tested by automatic optical inspection. Results Indexes of ES, SR, Gal-3, VEGF and Cyfra21.1 showed statistically increasing tendency in the control group, thyroid adenoma group and papillary thyroid carcinoma group sequentially (P<0.05). Serum levels of TSH, TgAb and TpoAb were significantly higher in the papillary thyroid carcinoma group than those in the other two groups (P<0.05). And there were no significant differences in serum TSH, TgAb and TpoAb between the control group and thyroid adenoma group (P>0.05). There were positive correlation between ES, SR and TSH, TgAb, TpoAb, Gal-3, VEGF, Cyfra21.1 in patients with papillary thyroid carcinoma (P<0.05). Conclusion Papillary thyroid carcinoma shows increased ES and SR detected by ultrasound, and which are relevant to related serological indicators. The two indices may be used for auxiliary diagnosis of papillary thyroid carcinoma.

Objective To investigate the clinical features and prognosis of pulmonary infection at different stages after renal transplantation.Methods Medical records of 61 patients with pulmonary infection after renal transplantation from January 2003 to July 2008 in our hospital were reviewed in this retrospective study. According to stages of infection onset, we divided all patients into two groups, early onset group (43/61, 70.5%, ≤12 months after transplantation) and late onset group (18/61, 29.5%, >12 months after transplantation). Clinical manifestations and prognosis were compared between the two groups.Results In the early onset group, the radiographic manifestation suggested diffuse interstitial changes of bilateral lungs. Combination of anti-infective therapy and early mechanical ventilation was preferred. While in the late onset group, unilateral pulmonary lesions were seen in most cases. More patients showed cardiac and gastrointestinal complications in this group, the mortality of which was much higher. Conclusions Pulmonary infection is a major complication of renal transplantation. The etiology, clinical characteristics and prognosis of infection varies with the stage after transplantation. Effective preventive and therapeutic measures should be applied more vigorously in patients with pulmonary infection, especially early onset ones.

Objetive: To investigate whether apoptosis of SGC7901 cells can be induced by the expression of the recombinant gene of anti-HER2 ScFv/tBid. Methods: The recombinant anti-HER2 ScFv/tBid gene was cloned into vector pCMV and the recombinant plasmid was transfected into SGC7901 cells. The gene expression was detected by RT-PCR and immunofluorescent staining. Cell counting was carried out to show the effect of the gene transfection on cell growth. At the same time, significant apoptotic peak was detected by flow cytometry in recombinant anti-HER2 ScFv/tBid gene transfected cells. Results: The fusion protein of anti-HER2 ScFv/tBid was observed in the cytoplasm of transfected SGC7901 cells. The transfected cells displayed typical cell growth inhibition and apoptosis. Conclusion: Fusion protein of anti-HER2 ScFv/tBid can induce apoptosis of SGC7901.

Objective To analyze the expression of Occludin in human cervical cancer and its clinical significance.Methods Forty patients with cervical cancer were selected as the research object,and the expression of Occludin in 40 couples of cancer tissue and normal tissue were measured by Western Blotting.The correlation between expression of Occludin protein and clinical characteristics was analyzed.Results In the cancer and normal tissues,the low expression rates of Occludin protein were 62.50％ (25 cases / 40 cases) and 77.50％ (31 cases /40 cases),the high expression rates of Occludin protein were 37.50％ (15 cases / 40 cases) and 22.50％ (9 cases/40 cases),the expression quantity of Occludin protein were (0.39 ± 0.34) and (0.11 ± 0.11),the differences were statistically significant(all P ＜0.05).There was no significant correlation between the level of Occludin expression and patients' age,tumor size,FIGO stage,pathological grading and lymph node metastasis (all P ＞ 0.05).Conclusion Down-regulation of Occludin protein was observed in cervical cancer tissues,which may contribute to the development of cervical cancer.However,it was not correlated with the patients' clinical characteristics.

Objective To evaluate the expression and clinical significance of phospholipase A2 (PLA2) expression in celiac fluid of endometriosis patients and its clinical significance.Methods Forty three cases of endometriosis patients without chronic pelvic inflammatory disease were selected as treatment group (n =43),30 cases of patients with ovarian benign teratoma were selected as control group (n =30).The levels of secreted phospholipase A2 (sPLA2) in peritoneal fluid of two groups were compared,to determine the tissue localization of cytosolic phospholipase A2 (cPLA2),and to compare the expression of cPLA2 in patients with different stages of endometriosis.Results The levels of sPLA2 in peritoneal fluid of treatment group and control group were 578.4,544.4 ng· L-1,with significant difference (P ＜ 0.05).The cPLA2 is mostly located on cytoplasm of glandular epithelial cells,blood vessel endothectopic endometrium.The levels of cPLA2 in endometriosis group in Ⅲ-Ⅳ stage was (0.70 ± 0.30) ng · L-1,significantly higher than that of Ⅰ-Ⅱ stage,which was (0.27 ±0.19) ng · L-1 (P ＜0.05).Conclusion Both the levels of sPLA2 and cPLA2 are highly expressed in endometriosis patients,with the progress of the disease,the degree of PLA2 expression increased.PLA2 may play an important role in the activation of endometriosis.

OBJECTIVETo evaluate the effect of a long-term community-based intervention program on risk factors of stroke among people with different risk factors.

METHODSIn 1987,2 geographically separated communities with 10 000 registered residents of each, were selected as either intervention or control communities in Beijing and Changsha. A cohort containing 2700 subjects at the age of 35 years or older,and free of stroke were sampled from each community. The baseline survey was conducted to screen the subjects at high risk for intervention and there were 5319 and 5506 subjects enrolled in intervention and control cohorts,respectively. Then,a program for controlling the risk factors of stroke was initiated in the intervention cohort and health education was provided to the whole intervention community. A follow-up survey was conducted in 1999. The information on incidence and mortality of stroke was collected.

RESULTSComparing with the control cohort, the risk of incidence and mortality of stroke decreased by 22 % ( HR = 0.78,95 % CI:0. 66-0.92) and 73 % (HR = 0.27,95 % CI:0. 17-0.42) in intervention cohort. The risks of stroke were lower in intervention cohort than in control cohort among almost all of the sub-groups with or without risk factors of stroke except for being male,current smokers and current alcohol drinkers. The risk of death caused by stroke decreased significantly in those with or without the risk factors of stroke.

CONCLUSIONThe long-term community intervention on the risk factors of stroke could effectively reduce the risk of incidence and mortality of stroke among people with or without the risk factors of stroke. More attention should be paid to the males and those who smoke or drink alcohol.

Aged ; Aged, 80 and over ; Cohort Studies ; Community Health Services ; Female ; Health Education ; Health Services Research ; Humans ; Incidence ; Male ; Middle Aged ; Risk Factors ; Stroke ; epidemiology ; mortality ; prevention & control

OBJECTIVEThe present study investigated the inhibitory effects of Chinese herb component sinapine on activity of acetylcholinesterase (AChE) in cerebral homogenate and blood serum of rats.

METHODAChE was prepared from cerebral homogenate and blood serum of rats, respectively. Acetylcholinesterase activity assay kit and Chromatometry were used to detect the AChE activity.

RESULTSinapine significantly inhibited AChE activity in vitro, with more effective on cerebral homogenate (IC50 3.66 micromol x L(-1)) than blood serum (IC50 22.1 micromol x L(-1)).

CONCLUSIONSinapine could significantly inhibit the cerebral AChE activity and may be a promising drug used for prevention and cure of Alzheimer's disease as a cholinesterase inhibitor.

Acetylcholinesterase ; blood ; metabolism ; Alzheimer Disease ; drug therapy ; prevention & control ; Animals ; Brain ; cytology ; enzymology ; Choline ; analogs & derivatives ; pharmacology ; therapeutic use ; Cholinesterase Inhibitors ; pharmacology ; therapeutic use ; Rats

Nuclear factor of activated T cells (NFAT) is an important family of transcription factors that can be activated by calmodulin and calcineurin in human cells. To investigate the expression and clinical significance of NFAT isoforms and calcineurin in non-small cell lung cancer (NSCLC), we collected tumor and adjacent normal tissues from 159 NSCLC patients and assembled them in a tissue microarray. Protein levels of NFAT1, NFAT2, NFAT3, NFAT4, and calcineurin were determined using immunohistochemistry. Correlations between NFAT and calcineurin expression and clinicopathologic characteristics were analyzed. We found that the positive rates of NFAT1 (52.8%, 84/159), NFAT2 (11.3%, 18/159), NFAT3 (28.3%, 45/159), NFAT4 (47.2%, 75/159), and calcineurin (47.8%, 76/159) expression were significantly higher in tumor tissues than in adjacent normal lung tissues (P<0.001), respectively. The positive rate of NFAT1 expression was significantly higher in patients with adenocarcinoma (63.5%, 47/74) than in those with squamous cell carcinoma (43.5%, 37/85) (χ2=6.340, P=0.012); with lymph node metastasis (61.6%, 53/86) than without lymph node metastasis (42.5%, 31/73) (χ2=5.818, P=0.016); and with stage-II and -III diseases (61.8%, 55/89) than with stage-I disease (41.4%, 29/70) (χ2=6.524, P=0.011). Moreover, the overexpression of NFAT1 was associated with poor survival of NSCLC patients (χ2=5.006, P=0.025). The positive rate of NFAT4 was significantly higher in patients with squamous carcinoma (57.6%, 49/85) than in those with adenocarcinoma (35.1%, 26/74) (χ2=8.045, P=0.005) and with high and moderate differentiation (54.9%, 61/111) than with low differentiation (29.2%, 14/48) (χ2=8.943, P=0.003). Calcineurin overexpression was significantly associated with histologic type (higher in squamous carcinoma than in adenocarcinoma, χ2=8.897, P=0.003), differentiation grade (higher in high-moderation grade than in low grade, χ2=9.566, P=0.002) and gender (higher in male than in female, χ2=5.766, P=0.016). Furthermore, calcineurin expression was significantly correlated with NFAT4 level (r=0.429, P<0.001). These results suggest that NFAT1 expression is associated with lung adenocarcinoma progression, and NFAT4 expression, which was higher in squamous lung cancer, is associated with calcineurin expression and differentiation grade.
Adenocarcinoma ; metabolism ; pathology ; Adult ; Aged ; Aged, 80 and over ; Calcineurin ; metabolism ; Carcinoma, Non-Small-Cell Lung ; metabolism ; pathology ; Carcinoma, Squamous Cell ; metabolism ; pathology ; Female ; Humans ; Lung ; metabolism ; Lung Neoplasms ; metabolism ; pathology ; Lymphatic Metastasis ; Male ; Middle Aged ; NFATC Transcription Factors ; metabolism ; Neoplasm Grading ; Neoplasm Staging ; Protein Isoforms ; metabolism ; Sex Factors ; Survival Rate ; Tissue Array Analysis