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European journal of medical research [journal]
- Diagnosis and treatment of a 16-year-old Chinese patient with concurrent hereditary hemochromatosis and Gilbert's syndrome. [JOURNAL ARTICLE]
- Eur J Med Res 2014 Sep 28; 19(1):51.
Gilbert¿s syndrome and hereditary hemochromatosis predominantly affect Caucasians with a low incidence in Asians. Here we report the case of a 16-year-old Chinese boy, who was admitted with hepatalgia, jaundice, hyperpigmentation, and splenomegaly to our hospital. After excluding chronic hepatitis, autoimmune disorders, and alcohol or drug injury, genetic analyses of the patient and his parents revealed simultaneous manifestations of Gilbert¿s syndrome and hereditary hemochromatosis, though his parents did not develop related symptoms. The presented case indicates that diagnoses of Gilbert¿s syndrome and hereditary hemochromatosis should be taken into consideration when chronic hepatitis is suspected without a clear etiology.
- The roles of mitoferrin-2 in the process of arsenic trioxide-induced cell damage in human gliomas. [JOURNAL ARTICLE]
- Eur J Med Res 2014 Sep 26; 19(1):49.
BackgroundAmong glioma treatment strategies, arsenic trioxide (As2O3) has shown efficacy as a therapeutic agent against human gliomas. However, the exact antitumor mechanism of action of As2O3 is still unclear. Mitochondria are considered to be the major source of intracellular reactive oxygen species (ROS), which are known to be associated with As2O3-induced cell damage. Therefore, we investigated whether mitoferrin-2, a mitochondrial iron uptake transporter, participates in As2O3-induced cell killing in human gliomas.MethodsHuman glioma cell lines were used to explore the mechanism of As2O3¿s antitumor effects. First, expression of mitoferrin-2 was analyzed in glioma cells that were pretreated with As2O3. Changes in ROS production and apoptosis were assessed. Furthermore, cell viability was assessed by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT).ResultsIn the present study we found that As2O3 induced ROS production and apoptosis in glioma cells. In addition, gene expression of mitoferrin-2, a mitochondrial iron uptake transporter, was increased 4 to 5 fold after exposure to As2O3 (5 ¿M) for 48 hours. Furthermore, apoptosis and cytotoxicity induced by As2O3 in glioma cells were decreased after silencing the mitoferrin-2 gene.ConclusionsOur findings indicated that mitoferrin-2 participates in mitochondrial ROS-dependent mechanisms underlying As2O3-mediated damage in glioma cells.
- Joint detection of ERCC1 , TUBB3 , and TYMS guidance selection of docetaxel, 5-fluorouracil and cisplatin (DDP) individual chemotherapy in advanced gastric cancer patients. [JOURNAL ARTICLE]
- Eur J Med Res 2014 Sep 16; 19(1):50.
BackgroundTo investigate the guidance selection of docetaxel (D), cisplatin (DDP) (C), and 5-fluorouracil (5-FU) (F) as individual chemotherapy agents via joint detection of ERCC1, TUBB3, and TYMS genes in patients with advanced gastric cancer (AGC).MethodClinical data of 120 patients with AGC who enrolled in our hospital between May 2009 and May 2012 were analyzed. These patients were randomly assigned to experimental and control groups. The mRNA expression of ERCC1, TUBB3, and TYMS was measured by DNA chip technology in the experimental group. Different chemotherapies were administered according to the mRNA expression levels of the three genes, while DCF chemotherapy was directly applied to the control group. Correlation between the three genes¿ mRNA levels, efficiency rate, the median time to progression (MTP), median survival time (MST) and adverse reactions was evaluated.ResultsAs a result, there was a significant correlation between ERCC1 and TUBB3 mRNA expression (P¿=¿0.005), but no obvious correlation between TUBB3 and TYMS or ERCC1 and TYMS. There was also no significant difference in the efficiency rate of chemotherapy (50 % versus 55 %; P¿=¿0.357) and the MTP (10 months versus 7 months; P¿=¿0.091) between the two groups. However, there was obvious significance in MST (13.7 months versus 11.6 months; P¿=¿0.004). Additionally, the experimental group provided us with a more effective way for controlling adverse reactions to chemotherapy.ConclusionCombination regimen of D, C, and F in AGC patients according to their ERCC1, TUBB3, and TYMS mRNA expression level may reduce adverse reactions and improve MST.
- A giant renal angiomyolipoma (AML) in a patient with septo-optic dysplasia (SOD). [JOURNAL ARTICLE]
- Eur J Med Res 2014 Sep 9; 19(1):46.
Angiomyolipoma (AML) is a rare benign renal tumor occurring in about 0.3 to 3% of the general population. Most frequently it takes the form of small single tumors occurring sporadically or accompanying tuberous sclerosis (Bourneville-Pringle disease). In some cases the tumor may reach a very large size and be a cause of various serious complications. This case description concerns a 26-year-old female patient, suffering from hypopituitarism, hypothyroidism and binocular blindness during the course of septo-optic dysplasia, in whom a giant, left renal AML was diagnosed and treated surgically. According to the authors¿ knowledge this was the first reported case of a huge size AML in a patient with de Morsier syndrome.
- Profiles of the auditory epithelia related microRNA expression in neonatal and adult rats. [JOURNAL ARTICLE]
- Eur J Med Res 2014 Sep 6; 19(1):48.
BackgroundThe impact of miRNA differential expression on the auditory epithelium stem cell development in postnatal rats is not clear. The present study was designed to analyze miRNA expression in the organ of Corti of neonatal and adult rats.MethodsThe cochleae of newborn (P0) and adult (P30) Sprague-Dawley rats were dissected in cold PBS to collect the sensory epithelia. Small RNAs were extracted using the mirVana RNA Isolation kit. Then, miRNA expression profiling was performed with RNAs from three newborns and three adult rats utilizing the TaqMan Array Rodent MicroRNA Panel.ResultsEighteen miRNAs were found be differentially expressed, 16 were unregulated in mature cochleae with the fold changes ranging from 17 to 600 folds. The expression levels of two miRNAs were reduced in the mature rat cochleae. GO analysis and signaling pathway analysis revealed the potential involvement of the miRNAs in the regulation of Wnt and TGF-β signaling pathways in hair cell development.ConclusionsOur results provided novel insights into the functional significance of miRNAs in the basilar membrane cells development, and revealed the potential importance of miRNAs in the hair cell by regulation of Wnt and TGF-β signaling.
- Network analysis of ChIP-Seq data reveals key genes in prostate cancer. [JOURNAL ARTICLE]
- Eur J Med Res 2014 Sep 3; 19(1):47.
BackgroundProstate cancer (PC) is the second most common cancer among men in the United States, and it imposes a considerable threat to human health. A deep understanding of its underlying molecular mechanisms is the premise for developing effective targeted therapies. Recently, deep transcriptional sequencing has been used as an effective genomic assay to obtain insights into diseases and may be helpful in the study of PC.MethodsIn present study, ChIP-Seq data for PC and normal samples were compared, and differential peaks identified, based upon fold changes (with P-values calculated with t-tests). Annotations of these peaks were performed. Protein¿protein interaction (PPI) network analysis was performed with BioGRID and constructed with Cytoscape, following which the highly connected genes were screened.ResultsWe obtained a total of 5,570 differential peaks, including 3,726 differentially enriched peaks in tumor samples and 1,844 differentially enriched peaks in normal samples. There were eight significant regions of the peaks. The intergenic region possessed the highest score (51%), followed by intronic (31%) and exonic (11%) regions. The analysis revealed the top 35 highly connected genes, which comprised 33 differential genes (such as YWHAQ, tyrosine 3-monooxygenase/tryptophan 5-monooxygenase activation protein and ¿ polypeptide) from ChIP-Seq data and 2 differential genes retrieved from the PPI network: UBA52 (ubiquitin A-52 residue ribosomal protein fusion product 1) and SUMO2 (SMT3 suppressor of mif two 3 homolog 2) .ConclusionsOur findings regarding potential PC-related genes increase the understanding of PC and provides direction for future research.
- Expressions of heparanase and upstream stimulatory factor in hepatocellular carcinoma. [Journal Article]
- Eur J Med Res 2014; 19(1):45.
The 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.HPSE, 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.HPSE, 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.Increased 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; 19(1):42.
Tumors 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).One 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).The 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.'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; 19(1):44.
Executive 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.Twelve 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.In 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.This 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.