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Objective To investigate the incidence of metabolic syndrome (MS) in patients with gastric cancer, and to explore the relationship between MS and the tumor site and the influence of MS on surgical procedure and short-term outcomes of patients with gastric cancer. Methods The clinical data of 639 patients with gastric cancer who were admitted to the Affiliated Hospital of Qingdao University from January 2006 to June 2008 were retrospectively analyzed. Patients with MS were in the MS group ( n= 64) and those without MS were in the control group ( n = 575 ). The surgical and postoperative complications were reviewed and the tumor site, intraoperative conditions and short-term outcomes between the two groups were analyzed. All data were analyzed using the chi-square test or t test. Results The incidence of MS in patients with gastric cancer was 10.0% (64/639).The incidence of MS in female patients was 14.4% (27/188), which was significantly higher than 8.2% (37/451)of male patients ( χ2= 6.265, P < 0.05). The operation time of the MS group was ( 185 ± 133 ) minutes, which was significantly longer than ( 168 ± 50) minutes of the control group ( t = 2. 126, P < 0. 05 ). The number of lymph nodes dissected in the MS group was 18 ± 11, which was significantly lower than 21 ± 11 of the control group ( t = 2. 125, P < 0.05 ). The postoperative period of fever of the MS group was (3.0 ± 1.4) days, which was significantly longer than (2.5 ± 1.4) days of the control group (t = 2. 433, P < 0.05 ). The incidence of postoperative complications of the MS group was 31.3% (20/64), which was significantly higher than 14.3% (82/575) of the control group ( χ2 = 12.291, P < 0.05 ). The length of hospital stay of the MS group was ( 19 ± 11 ) days,which was significantly longer than ( 16±11 ) days of the control group ( t = 2. 141, P< 0.05 ). The mortalities of MS group and control group were 0 and 0. 5% (3/575), respectively, with no significant difference ( χ2 = 0.000,P >0.05). Condusions A low prevalence of MS is found in patients with gastric cancer. However, patients with gastric cancer complicated with MS may present with prolonged surgical procedure, reduced amount of lymph nodes dissected and increased incidence of postoperative complications, hospital stay and costs. Perioperative management of patients with gastric cancer complicated with MS should be paid more attention.
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ition research with higher quality should be advocated.
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BACKGROUND: Varicocele (VC) can induce the infertility in males, so the investigation on its mechanism is important for the treatment of male infertility. OBJECTIVE: To analyze the effects of VC induced by surgical operation on the contents of mitochondria calcium, cytochrome C and cell apoptosis as well as the changes of microstructure and ultrastructure in epididymis. DESIGN: Randomized control experiment. MATERIALS: The experiment was conducted in Jiamusi University between June 2003 and May 2004. Forty male adolescent Wistar rats with the average body mass of (220±20) g were selected, which were provided by the Animal Laboratory of Jiamusi University. Rats were randomly divided into sham-operation group and deligation group with 20 rats in each group at one week after feeding at room temperature. METHODS: Rats in the sham-operation group were made into sham-op eration models by exposing the left renal vein. Rats in the deligation group were deligated of partial left renal veins so as to establish VC models. Bilateral epididymides were removed at ten weeks after operation. The levels of mitochondria calcium in head and body of epididymis as well as the contents of cytochrome C and cytoplasm cytochrome C were detected. The cell apoptosis was detected by in situ terminal deoxynucleotityl transferase mediated dTUP nick end labeling (TUNEL) technique. The specimens of corpus epididymis were routinely made for observation under optimal microscope and electron microscope. The changes of microstructure and ultrastructure of epididymis were studied.MAIN OUTCOME MEASURES: The contents of mitochondria calcium, cytochrome C and cytoplasm cytochrome C. Cell apoptosis. Changes of cellular morphous in epididymis. RESULTS: A total of 40 rats were involved in the analysis of results.① The contents of mitochondria calcium in bilateral epididymis were obviously decreased in the deligation group than the sham-operation group [(4.72±1.45), (5.90±1.97), (10.13±2.34) mg/g, (P ＜ 0.01)].②The content of mitochondria cytochrome C in right epididymis obviously increased more in the deligation group than the sham-operation group [(0.36±0.20), (0.19±0.14), (0.15±0.07) μmol/L (P ＜ 0.05)]. ③The contents of cytoplasm cytochrome C in bilateral epididymis greatly increased more in the deligation group than the sham-operation group [(8.17±1.49), (7.48 ± 1.60), (5.93±1.60) mol/L, (P ＜ 0.05)].④The apoptotic rate of bilateral cells in the deligation group was significantly increased than the sham-op eration group [( 13.3±1.9)%, ( 12.6±1.5)%, (6.2±0.3)%,(P ＜ 0.01 )]. However, there were no significant differences in mitochondria calcium, cytochrome C, cytoplasm cytochrome C and apoptotic rate between the left and right mitochondria of the deligation group (P ＞ 0.05).⑤Main changes under light microscope: cuctus epididymis shrinked, the blebbing appeared in epithelial cells, and the light cells as well as halo cells in epithelia were significantly increased. ⑥Main representation under electron microscope: the cytolysosome inside the chief cells were increased and enlarged with increased residual bodies, and the endoplasmic reticulum expanded, the mitochondria cristae was dim, the Golgi complex was vacuolated. Besides, nuclear chromatin were dense and in lump at different size, which located mainly in the nuclear membrane. The microvilli of columnar epithelial cells were sparse and local defects could be seen. CONCLUSION: The cytochrome C is released to kytoplasm via mitochondrial outer membrane, which activates the caspase 3 and leads to the apoptosis, and accordingly causes excessive apoptosis of epididymal tissues and as well as the changes of microstructure and ultrastructure. All these changes may be one of the important reasons of infertility resulting from VC.