ABSTRACT
AIM@#In an effort to identify novel, small molecules which can affect the proliferation of lung cancer cells, F-01A, a polyether antibiotic isolated from the fermentation broth of Streptomyces was tested.@*METHOD@#F-01A was tested for its antitumor properties on the lung cancer cell line SPC-A-1, at six doses (0.1, 0.5, 1, 2.5, and 5 μmol·L(-1)), using various cellular assays. Cell viability was measured by the MTT assay, Hochest 33258 was used to study nuclear morphology; DNA ladder and the loss of mitochondrial membrane potential were also evaluated.@*RESULTS@#F-01A induces apoptosis against SPC-A-1 cells in a dose-dependent manner. The IC50 is 0.65 μmol·L(-1), and the inhibition at 5 μmol·L(-1) is 87.89%. Further, JC-1 staining indicates F-01A could induce the loss of mitochondrial membrane potential, and the DNA fragment is evident.@*CONCLUSION@#Mechanistic analysis showed that F-01A induced apoptosis of cancer cells probably in the mitochondrial pathway. The antitumor actions of F-01A involve activation of the apoptotic pathway against SPC-A-1 cells, and it may be valuable for further drug development.
Subject(s)
Humans , Anti-Bacterial Agents , Metabolism , Pharmacology , Apoptosis , Cell Line, Tumor , Cell Proliferation , Cell Survival , Growth Inhibitors , Pharmacology , Lung Neoplasms , Membrane Potential, Mitochondrial , Streptomyces , Chemistry , MetabolismABSTRACT
Objective: To study the triterpenoid components of Rosa cymosa. Methods: Compounds were isolated by repeated chromatography on silica gel column. The structures were elucidated by chemical and spectroscopic methods. Results: Thirteen triterpenoids were isolated and identified as 2-oxo-pomolic acid (1), 2α, 19α-dihydroxy-3-oxo-12-ursen-28-oic acid (2), 2-acetyl tormentic acid (3), pomolic acid (4), euscaphic acid (5), arjunic acid (6), myrianthic acid (7), arjunetin (8), rosamultin (9), kaji-ichigoside F1 (10), 2α, 3α, 19α, 23-tetrahydroxy-12-ursen-28-O-β-D-glucoside (11), fupenzic acid (12), and cecropiacic acid 3-methyl ester (13). Conclusion: Compounds 1-4, 7, and 11-13 are obtained from this plant for the first time.
ABSTRACT
<p><b>OBJECTIVE</b>To compare the clinical effect of 3S-type and P-loops digestive reconstruction after total gastrectomy for gastric cancer.</p><p><b>METHODS</b>From February 2005 to February 2009, 85 cases underwent total gastrectomy in The First Affiliated Hospital of Henan University of Science and Technology. Two types of digestive reconstruction were performed with 3S-type jejunum(n=46) and P-loops Roux-en-Y esophagojejunostomy(n=39). The postoperative complications, nutrition index and the quality of life at half a year after surgery were comparatively analyzed.</p><p><b>RESULTS</b>Two types of digestive reconstruction had no statistical differences in operative time, postoperative complications and mortality(P>0.05). Compared with P-loops Roux-en-Y esophagojejunostomy at 6 months after operation, 3S-type jejunum had a lower incidence in dumping syndrome[4.3% (2/46) vs. 10.3% (4/39), P<0.05] and reflux esophagitis [10.8% (5/46) vs. 33.3% (13/39), P<0.05]. 3S-type jejunum was superior to P-loops Roux-en-Y esophagojejunostomy in serum total protein(55.7±3.1 g/L vs 50.3±5.1 g/L, P<0.05), albumin(36.5±3.6 g/L vs. 31.6±4.4 g/L, P<0.05), hemoglobin(120.2±13.4 g/L vs. 110.4±23.0 g/L, P<0.05), and nutritional assessment index(73.2±4.8 vs. 56.0±6.3, P<0.05).</p><p><b>CONCLUSION</b>Reconstruction of stomach with 3S-type jejunum may be an effective way to prevent reflux esophagitis and dumping syndrome, and to improve the nutritional status and the quality of life.</p>
Subject(s)
Female , Humans , Male , Middle Aged , Anastomosis, Roux-en-Y , Methods , Anastomosis, Surgical , Methods , Gastrectomy , Methods , Jejunum , General Surgery , Stomach Neoplasms , General SurgeryABSTRACT
<p><b>OBJECTIVE</b>To investigate and compare the biological characteristics and sensitivity to chemotherapy and radiotherapy of intrahepatic and extrahepatic cholangiocarcinoma cells in vitro.</p><p><b>METHODS</b>The intrahepatic and extrahepatic cholangiocarcinoma cell lines were established, and cells with steady passage were chosen to study the biological characteristics including morphology, growth dynamics, chromosome, and levels of cancer antigen (CA) 125, CA19-9, alpha-fetoprotein (AFP), and carcino-embryonic antigen (CEA). Meanwhile, MTT assay was used to determine the sensitivity of both kinds of cells to 6 chemotherapeutic drugs, including cisplatin, paclitaxel, harringtonine, 5-fluorouracil, vincristine, and aclacimomycin, and the inhibitory rate of cells under the irradiation of 10 Gy ray was also measured.</p><p><b>RESULTS</b>The intrahepatic cholangiocarcinoma cells were mostly fusiform in shape, and extrahepatic cholangiocarcinoma cells were mostly round or polygon in shape. Their doubling time was 26. 3 hours and 23. 1 hours, respectively. Their average number of chromosomes was 59 (range, 38-84) and 67 (range, 49-103), respectively. The chromosome karyotypes of most intrahepatic cholangiocarcinoma cells were hyperdiploid and hypotriploid, while hypertriploid was predominant in extrahepatic cholangiocarcinoma cells. The level of CA 125 in supernatant of extrahepatic cholangiocarcinoma cells increased obviously, while levels of other determined tumor markers in both kinds of cells were all within normal range. The intrahepatic cholangiocarcinoma cells were low sensitive to cisplatin and paclitaxel, but not sensitive to the other 4 chemotherapeutic drugs. The extrahepatic cholangiocarcinoma cells were high sensitive to cisplatin, but not sensitive to the other 5 drugs. Both kinds of cells had poor sensitivity to radiotherapy.</p><p><b>CONCLUSIONS</b>Intrahepatic and extrahepatic cholangiocarcinoma cells show differences in shape, doubling time, chromosome karyotype, tumor marker level, and chemosensitivity, whereas they both have poor radiosensitivity. Though they are similar in histopathology, they have different growth characteristics and have discrepancy in treatment and prognosis.</p>