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European journal of medical research [journal]
- Expressions of heparanase and upstream stimulatory factor in hepatocellular carcinoma. [JOURNAL ARTICLE]
- Eur J Med Res 2014 Aug 23; 19(1):45.
BackgroundThe expression of heparanase (HPSE) was associated with postoperative metastatic recurrence in patients with hepatocellular carcinoma (HCC). The six E-box binding sites in the core promoter of the HPSE gene suggested that transcription factors of E-box such as upstream stimulatory factor (USF) might regulate the transcription of the HPSE gene. The aim of our study is to measure the levels of HPSE and USF expression and investigate the relationship between USF expression and clinicopathological parameters in patients with HCC.MethodsHPSE, USF1 and USF2 expressions in human HCC cell lines (BEL-7402, HepG2 and HCCLM3) and 15 fresh human HCC tissue samples were measured by real-time reverse transcriptase-PCR and Western blot analysis. The normal liver cell line QSG7701 or fresh normal liver tissue samples obtained from 15 additional surgical patients with hepatic rupture was used as a control. The protein expressions were determined by immunohistochemistry in paraffin-embedded human HCC tissues and corresponding non-neoplastic tumor surrounding tissues (NTST) of 57 patients.ResultsHPSE, USF1 and USF2 mRNA expressions were increased in HCC cell lines and HCC tissues compared with normal liver cell line and normal liver tissue. The protein expressions of HPSE, USF1 and USF2 in HCC cell lines and HCC tissues were also increased. Both USF1 and USF2 expressions were positively correlated with HPSE. USF1 and USF2 expressions were increased in patients with liver cirrhosis, worse tissue differentiation, advanced HCC stages and metastatic recurrence.ConclusionsIncreased USF in HCC is associated with HPSE expression. USF might be an important factor in regulating HPSE expression and act as a novel marker of metastatic recurrence of HCC patients.
- Inferior mesenteric vein serves as an alternative guide for transection of the pancreatic body during pancreaticoduodenectomy with concomitant vascular resection: a comparative study evaluating perioperative outcomes. [JOURNAL ARTICLE]
- Eur J Med Res 2014 Aug 21; 19(1):42.
BackgroundTumors of the pancreatic head often involve the superior mesenteric and portal veins. The purpose of this study was to assess perioperative outcomes after pancreaticoduodenectomy (PD) with concomitant vascular resection using the inferior mesenteric vein (IMV) as a guide for transection of the pancreatic body (Whipple at IMV, WATIMV).MethodsOne hundred thirty-seven patients had segmental vein resection during PD between January 2006 and June 2013. Depending on whether the standard approach of creating a tunnel anterior to the mesenterico-portal vein (MPV) axis was achieved for pancreatic transection, patients were subjected to a standard PD with vein resection procedure (s-PD¿+¿VR, n¿=¿75) or a modified procedure (m-PD¿+¿VR, n¿=¿62). Within the m-PD¿+¿VR group, 28 patients underwent the WATIMV procedure, while 34 patients underwent the usual procedure of transection, or `central pancreatectomy¿ (c-PD¿+¿VR).ResultsThe volume of intraoperative blood loss and the blood transfusion requirements were significantly greater, and the venous wall invasion and neural invasion frequency were significantly higher in the m-PD¿+¿VR group compared with the s-PD¿+¿VR group. There were no significant differences in the length of hospitalization, postoperative morbidity, and grades of complications between the two groups. Multivariate logistic regression identified intraoperative blood transfusion (P¿=¿0.004) and vascular invasion (P¿=¿0.008) as the predictors of postoperative morbidity. Further stratification of the entire cohort of 62 (45%) patients who underwent m-PD¿+¿VR showed a higher rate of negative resection margins (96.4%) in the WATIMV group compared with the c-PD¿+¿VR group (76.5%) (P¿=¿0.06). The volume of intraoperative blood loss (P¿=¿0.013), and intraoperative blood transfusion requirements (P¿=¿0.07) were significantly greater in the c-PD¿+¿VR group compared with the WATIMV group. Furthermore, high intraoperative blood loss and tumor stage were predictive of a positive resection margin.Conclusions`Whipple at the IMV (WATIMV)¿ has comparable postoperative morbidity with standard PD¿+¿VR. If IMV runs into the splenic vein, it could serve as an alternative guide for transection of the pancreatic body during PD¿+¿VR.
- Systematic evaluation of percutaneous radiofrequency ablation versus percutaneous ethanol injection for the treatment of small hepatocellular carcinoma: a meta-analysis. [JOURNAL ARTICLE]
- Eur J Med Res 2014 Aug 20; 19(1):39.
Radiofrequency ablation (RFA) and percutaneous ethanol injection (PEI) have been used for patients with hepatocellular carcinoma (HCC). However, which therapy is superior remains to be further elucidated. We aimed to conduct a systematic review to assess survival and local tumor recurrence rate with RFA compared with PEI therapy for HCC.We conducted systematic review and meta-analysis of randomized controlled trials (RCTs) published up to 2014 in PubMed, MEDLINE, EMBASE, EBSCO, Springer, Ovid and the Cochrane library. Only RCTs that evaluated survival rate and occurrence of HCC between RFA and PEI therapy were included. The OR (odds ratio) with a 95% confidence interval (CI) was calculated by the Revman 5.0 software.A total of six studies including 983 HCC patients were eligible for this analysis. The survival rate showed a significant benefit under RFA therapy over PEI at 1-year (P = 0.02, OR = 1.88, 95% CI: 1.09 to 3.22), 2-years (P = 0.0003, OR = 2.06, 95% CI: 1.39 to 3.05) and 3-years (P = 0.0007, OR = 1.68, 95% CI: 1.25 to 2.27). Likewise, RFA achieved significantly lower rates of local tumor recurrence over PEI at 1-year (P = 0.002, OR = 0.43, 95% CI: 0.26 to 0.73), 2-year (P = 0.03, OR = 0.33, 95% CI: 0.12 to 0.88) and 3-year (P = 0.003, OR = 0.61, 95% CI: 0.43 to 0.84).The current evidence suggests that RFA is superior to PEI in better survival and local disease control for small HCCs <5 cm in diameter and that RFA is worthy of promotion in clinical applications.
- Secondary damage in left-sided frontal white matter detected by diffusion tensor imaging is correlated with executive dysfunction in patients with acute infarction at the ipsilateral posterior corona radiata. [JOURNAL ARTICLE]
- Eur J Med Res 2014 Aug 20; 19(1):44.
BackgroundExecutive dysfunction has been observed in patients with left-sided anterior corona radiata infarction. However, whether left-sided posterior corona radiata infarction could cause executive dysfunction is unclear. Also, whether secondary damage in the left frontal white matter following ipsilateral posterior corona radiata infarct is causal or not and contributes to the occurrence and development of executive dysfunction, is still uncertain.MethodsTwelve patients with posterior corona radiata infarction underwent diffusion tensor imaging (DTI) and an executive functional assessment at week 1 (W1), week 4 (W4), and week 12 (W12) after onset. Color duplex sonography and Transcranial Duplex Scanning (TCD) were performed at W1 and W12. Twelve healthy volunteers of similar ages and educational histories were examined as controls and assessed once.ResultsIn the patients, we observed an increased mean diffusivity (MD) and a decreased fractional anisotropy (FA) in the left frontal white matter from W1 to W12. There were no significant changes in cerebral blood flow in patients between W1 and W12 according to the result of Color duplex sonography and TCD. Patients showed progressively impaired executive function during 12 weeks. Significant correlations were found between increased MD and decreased FA in the left frontal white matter with impaired degree of executive function.ConclusionsThis study demonstrates that DTI detected secondary damage in left-sided frontal white matter in patients with acute infarction at the ipsilateral posterior corona radiata. This change may be correlated with executive functional changes in these patients.
- Paris saponin VII suppressed the growth of human cervical cancer Hela cells. [Journal Article, Research Support, Non-U.S. Gov't]
- Eur J Med Res 2014.:41.
Saponins of several herbs are known to induce apoptosis in many cancer cells. The present study aimed to investigate the growth inhibitory effect of Paris saponin VII (PS VII), a kind of steroidal saponins from Chonglou (Rhizoma Paridis Chonglou), on the human cervical cancer cell line Hela and the relative molecular mechanisms.Hela cells were exposed to different concentrations of PS VII (1 to 100 μM). Inhibition of cell proliferation was measured by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and 5-ethynyl-2'-deoxyuridine (EdU) assays. The amount of apoptotic cells was evaluated by flow cytometric analysis. And the protein level of cleaved caspase-3, cleaved caspase-9, Bax, and Bcl-2 was evaluated by Western blot.The half maximal inhibitory concentration (IC50) value of PS VII for the growth inhibition of Hela cells was 2.62 ± 0.11 μM. PS VII increased the expression of caspase-3, caspase-9, and Bax while decreased that of Bcl-2, suggesting that PS VII may induce apoptosis through intrinsic apoptotic ways.These data indicate that PS VII has the potential for the treatment of cervical cancer.
- IGF2BP2 and obesity interaction analysis for type 2 diabetes mellitus in Chinese Han population. [Journal Article, Research Support, Non-U.S. Gov't]
- Eur J Med Res 2014.:40.
The objective of this study was to systematically evaluate the contribution of the insulin-like growth factor 2 mRNA-binding protein 2 (IGF2BP2) to type 2 diabetes mellitus (T2DM) and its interaction with obesity to T2DM susceptibility.To clarify whether IGF2BP2 is an independent risk factor for T2DM in Chinese population, we conducted a study with a total of 2,301 Chinese Han subjects, including 1,166 T2DM patients and 1,135 controls, for the genotype of a most common and widely studied polymorphism-rs4402960 of IGF2BP2. Genotyping was performed by iPLEX technology. Gene and environment interaction analysis was performed by using multiple logistic regression models.The repeatedly confirmed association between IGF2BP2 (rs4402960) and T2DM had not been replicated in this cohort (P = 0.182). Interestingly, we found that obese subjects (body mass index (BMI) ≥ 28.0 kg/m2) bearing the minor A allele had an increased risk to develop T2DM (P = 0.008 for allele analysis and P < 0.001 for genotype analysis).The present study provided data suggesting that the wild C allele of IGF2BP2 (rs4402960) had a protective effect against T2DM in obese subjects of Chinese Han population.
- Primary desmoplastic small round cell tumor of the duodenum. [Journal Article]
- Eur J Med Res 2014; 19(1):38.
The desmoplastic small round cell tumor (DSRCT) is an extremely rare tumor that mainly affects adolescents and mostly involves the abdominal and pelvic peritoneum. A 14-year-old girl presented with intermittent epigastric pain; abdominal computed tomography and upper gastrointestinal barium X-ray revealed an 8 cm × 10 cm space-occupying mass in the duodenal region. The patient underwent pancreaticoduodenectomy and the final pathologic diagnosis was DSRCT. Although multi-agent systemic chemotherapy was given, the patient died of metastasis 8 months later. Early diagnosis and surgical treatment with adjuvant chemotherapy seems to be the best treatment choice for this disease.
- Low-frequency pulsed electromagnetic fields significantly improve time of closure and proliferation of human tendon fibroblasts. [Journal Article]
- Eur J Med Res 2014.:37.
The promotion of the healing process following musculoskeletal injuries comprises growth factor signalling, migration, proliferation and apoptosis of cells. If these processes could be modulated, the healing of tendon tissue may be markedly enhanced. Here, we report the use of the Somagen™ device, which is certified for medical use according to European laws. It generates low-frequency pulsed electromagnetic fields that trigger effects of a nature that are yet to be determined.A 1.5-cm wide, linear scrape was introduced into patellar tendon fibroblast cultures (N = 5 donors). Treatment was carried out every second day. The regimen was applied three times in total with 30 minutes comprising pulsed electromagnetic field packages with two fundamental frequencies (10 minutes of 33 Hz, 20 minutes of 7.8 Hz). Control cells remained untreated. All samples were analyzed for gap closure time, proliferation and apoptosis one week after induction of the scrape wound.The mean time for bridging the gap in the nontreated cells was 5.05 ± 0.33 days, and in treated cells, it took 3.35 ± 0.38 days (P <0.001). For cell cultures with scrape wounds, a mean value for BrdU incorporation of OD = 0.70 ± 0.16 was found. Whereas low-frequency pulsed electromagnetic fields treated samples showed OD = 1.58 ± 0.24 (P <0.001). However, the percentage of apoptotic cells did not differ between the two groups.Our data demonstrate that low-frequency pulsed electromagnetic fields emitted by the Somagen™ device influences the in vitro wound healing of patellar tendon fibroblasts and, therefore, possibly increases wound healing potential.
- The collateral caval shunt as an alternative to classical shunt procedures in patients with recurrent duodenal varices and extrahepatic portal vein thrombosis. [Journal Article, Research Support, Non-U.S. Gov't]
- Eur J Med Res 2014.:36.
Upper gastrointestinal bleeding episodes from variceal structures are severe complications in patients with portal hypertension. Endoscopic sclerotherapy and variceal ligation are the treatment options preferred for upper variceal bleeding owing to extrahepatic portal hypertension due to portal vein thrombosis (PVT). Recurrent duodenal variceal bleeding in non-cirrhotic patients with diffuse porto-splenic vein thrombosis and subsequent portal cavernous transformation represent a clinical challenge if classic shunt surgery is not possible or suitable.In this study, we represent a case of recurrent bleeding of duodenal varices in a non-cirrhotic patient with cavernous transformation of the portal vein that was successfully treated with a collateral caval shunt operation.