Well-differentiated fetal adenocarcinoma of the lung: clinicopathologic features of 45 cases in China.

OBJECTIVE: Well-differentiated fetal adenocarcinoma (WDFA) is a rare pulmonary carcinoma with low malignancy and favorable prognosis. All cases were collected, analyzed and summarized to better understand this disease. METHODS: We used the keywords "fetal adenocarcinoma" and "epithelial pulmonary blastoma (EPB)" to search WANFANG MED ONLINE, CNKI and NCBI PUBMED for cases reported by Chinese authors from 1987 to July 2015. RESULTS: A total of 64 cases reported in China were reviewed, and the details of the clinicopathological features of 45 cases were summarized. Among these 45 patients, 23 (23/45, 51.1%) patients were male and 22 (22/45, 48.9%) patients were female. The mean age at diagnosis was 35 ± 15 years old (range, 6-72 years old) with a bimodal peak in the second and third decades. Furthermore, 24 tumors (24/31, 77.4%) were found to have progressed past stage I, while only three (3/45, 6.7%) tumors had lymph nodes metastases. These tumor cells were 100% reactive for keratin, ß-catenin, Napsin A and PDGFRα when stained by these antibodies. Better survival could be obtained if the metastatic tumor is removed in some patients with metastases. Four (4/31, 12.9%) patients died due to their tumors. CONCLUSIONS: WDFA is very different to conventional adenocarcinoma in clinicopathology. It prefers to occur in the second and third decades. Lymph node metastasis is infrequent. Beta-catenin may be a potential marker for disease. Surgery is the best therapy method if the technology is feasible.

Antioxidant and SGC-7901 cell inhibition activities of Rhizoma Dioscoreae bulbiferae. ethanol extracts.

The objective of this research was to study the pharmacology of Dioscorea bulbifera L. on antioxidant and anticancer activity. Alcohol extracts of Dioscorea bulbifera L. were made out by different concentration alcohol; they were tested by Hydroxyl radical scavenging test, reducing capacity test and total antioxidant capacity test. In the anticancer test, MTT test was used to study the inhibition rate. The results told that 70% ethanol extracts could scavenge most DPPH· at 2 mg/ml. The rate was 55.2%; 80% ethanol extract could clear the most ·OH. The clearance rate was 51.2%. 80% ethanol crude extracts possessed the strongest reducing ability per gram of the extract equal to 49.3 µmol Fe(2 +). Different concentrations of the extracts could inhibit the proliferation of line SGC-7901, and with the concentration increased, the inhibition rate was gradually increased.

5-Hydroxytryptamine enhances L-type calcium current in norepinephrine-induced hypertrophic ventricular myocytes.

AIM: To study the effects of 5-hydroxytryptamine (5-HT) on L-type calcium current (ICa) in norepinephrine (NE)-induced hypertrophic ventricular myocytes. METHODS: Left ventricular hypertrophy was induced by injecting NE intraperitoneally in rats. The single myocytes were isolated enzymatically from left ventricle. ICa was recorded with the whole-cell configuration of the patch-cl amp technique. RESULTS: (1) The ratio of left heart weight to body weight (LHW/BW) was higher (P < 0.01) in the NE-treated rats compared with the control rats on d 15. LHW/BW was increased 31.8 % in NE-treated rats. (2) ICa was larger in hypertrophic cells than that in normal cells (4.5 p A/pF +/- 0.5 pA/pF vs 3.5 pA/pF +/- 0.3 pA/pF, respectively, at testing potential of 0 mV; P < 0.01). (3) 5-HT (1, 10 micromol/L) increased ICa and decreased the peak current potential from 0 mV to -10 mV in both myocytes. The augmentation of ICa induced by 5-HT was larger in hypertrophic ones. (4) 5-HT did not markedly influence the steady-state activation kinetics. However, 5-HT shifted steady-state inactivation curve with half inactivation voltage V 1/2 changing from -39.5 mV +/- 1.8 mV to -27.8 mV +/- 1.7 m V (P < 0.05), while not changing the voltage responsiveness of calcium channel (slope factor k was not changed markedly). CONCLUSION: 5 -HT increased ICa in ventricular myocytes by changing the kinetics of steady-st ate inactivation. A larger alteration of ICa induced by 5-HT i n hypertrophic ventricular myocytes suggests that 5-HT be more prone to induce arrhythmia in hypertrophic heart than in normal one.