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1.
Clin Radiol ; 79(8): e1031-e1039, 2024 Aug.
Article in English | MEDLINE | ID: mdl-38749826

ABSTRACT

PURPOSE: To develop a nomogram based on MRI and clinical features to predict progression-free survival (PFS) of 2018 FIGO stage ⅢC1r cervical squamous cell carcinoma (CSCC). METHODS: 144 consecutive patients with stage ⅢC1r CSCC from two independent institutions were stratified into training cohort (from Institution 1, n=100) and independent validation cohort (from Institution 2, n=44). Univariate and multivariate Cox regression analyses of MRI and clinical features before treatment were performed to determine independent risk factors for PFS in training cohort. Nomogram was developed based on them. Concordance index (C-index), calibration curves, and receiver operating characteristic (ROC) analyses were performed to assess and validate the nomogram. RESULTS: In training cohort, 2009 FIGO stage, maximum length of the primary tumor, short diameter and roundness index of the maximum metastatic lymph node were independent risk factors of PFS in patients with stage IIIC1r CSCC (all P-values < 0.05). Nomogram based on them to predict 1- and 3-year PFS achieved C-indexes of 0.835 (95% confidence interval (CI): 0.809-0.862) and 0.789 (95%CI: 0.683-0.895) in the training and validation cohorts, respectively. Areas under ROC curves for the nomogram to predict 1- and 3-year PFS were 0.891 (95%CI: 0.829-0.954), 0.921 (95%CI: 0.861-0.981) in training cohort, and 0.902 (95%CI: 0.803-0.999), 0.885 (95%CI: 0.778-0.992) in validation cohort, respectively. Calibration curves indicated the nomogram predictions were in good agreement with actual observations. CONCLUSIONS: The nomogram based on MRI and clinical features has high accuracy and stability in predicting PFS of patients with stage IIIC1r CSCC.


Subject(s)
Carcinoma, Squamous Cell , Magnetic Resonance Imaging , Neoplasm Staging , Nomograms , Uterine Cervical Neoplasms , Humans , Female , Uterine Cervical Neoplasms/diagnostic imaging , Uterine Cervical Neoplasms/pathology , Uterine Cervical Neoplasms/mortality , Middle Aged , Carcinoma, Squamous Cell/diagnostic imaging , Carcinoma, Squamous Cell/pathology , Carcinoma, Squamous Cell/mortality , Magnetic Resonance Imaging/methods , Adult , Progression-Free Survival , Aged , Retrospective Studies
3.
Eur Rev Med Pharmacol Sci ; 25(2): 1135-1145, 2021 Jan.
Article in English | MEDLINE | ID: mdl-33577070

ABSTRACT

OBJECTIVE: To explore the different clinical and CT features distinguishing COVID-19 from H1N1 influenza pneumonia. PATIENTS AND METHODS: We compared two independent cohorts of COVID-19 pneumonia (n=405) and H1N1 influenza pneumonia (n=78), retrospectively. All patients were confirmed by RT-PCR. Four hundred and five cases of COVID-19 pneumonia were confirmed in nine hospitals of Zhejiang province, China from January 21 to February 20, 2020. Seventy-eight cases of H1N1 influenza pneumonia were confirmed in our hospital from January 1, 2017 to February 29, 2020. Their clinical manifestations, laboratory test results, and CT imaging characteristics were compared. RESULTS: COVID-19 pneumonia patients showed less proportions of underlying diseases, fever and respiratory symptoms than those of H1N1 pneumonia patients (p<0.01). White blood cell count, neutrophilic granulocyte percentage, C-reactive protein, procalcitonin, D-Dimer, and lactate dehydrogenase in H1N1 pneumonia patients were higher than those of COVID-19 pneumonia patients (p<0.05). H1N1 pneumonia was often symmetrically located in the dorsal part of inferior lung lobes, while COVID-19 pneumonia was unusually showed as a peripheral but non-specific lobe distribution. Ground glass opacity was more common in COVID-19 pneumonia and consolidation lesions were more common in H1N1 pneumonia (p<0.01). COVID-19 pneumonia lesions showed a relatively clear margin compared with H1N1 pneumonia. Crazy-paving pattern, thickening vessels, reversed halo sign and early fibrotic lesions were more common in COVID-19 pneumonia than H1N1 pneumonia (p<0.05). Pleural effusion in COVID-19 pneumonia was significantly less common than H1N1 pneumonia (p<0.01). CONCLUSIONS: Compared with H1N1 pneumonia in Zhejiang, China, the clinical manifestations of COVID-19 pneumonia were more concealed with less underlying diseases and slighter respiratory symptoms. The more common CT manifestations of COVID-19 pneumonia included ground-glass opacity with a relatively clear margin, crazy-paving pattern, thickening vessels, reversed halo sign, and early fibrotic lesions, while the less common CT manifestations of COVID-19 pneumonia included consolidation and pleural effusion.


Subject(s)
COVID-19/diagnostic imaging , COVID-19/epidemiology , Influenza A Virus, H1N1 Subtype/isolation & purification , Influenza, Human/diagnostic imaging , Influenza, Human/epidemiology , Tomography, X-Ray Computed/methods , Adult , Aged , Case-Control Studies , China/epidemiology , Cohort Studies , Female , Humans , Male , Middle Aged , Retrospective Studies
4.
Eur Rev Med Pharmacol Sci ; 24(5): 2412-2420, 2020 03.
Article in English | MEDLINE | ID: mdl-32196592

ABSTRACT

OBJECTIVE: To determine expression characteristics of XTP8 and TGIF1 in gastric carcinoma (GC), and the potential roles of XTP8/TGIF1 axis in influencing the progression of GC. MATERIALS AND METHODS: The expression levels of XTP8 and TGIF1 in GC tissues and cells were detected. Their functions in prognosis in GC patients were evaluated by the Kaplan-Meier method. The correlation between the XTP8 level and the pathological indexes of the GC patients were analyzed. The changes in the proliferation, migration, and invasion capacities of MKN-45 and SGC-7901 cells affected by XTP8 and TGIF1 were assessed. The interaction between XTP8 and TGIF1 was determined through Dual-Luciferase reporter gene assay and rescue experiments. RESULTS: XTP8 was upregulated in GC tissues and cells. XTP8 level was positively correlated with lymphatic and distant metastasis, as well as poor prognosis of GC patients. The silence of XTP8 attenuated proliferation, migration, and invasion capacities of MKN-45 and SGC-7901 cells. TGIF1 was the downstream gene binding to XTP8, which was downregulated in GC, and XTP8 negatively regulated the TGIF1 level in GC tissues. Importantly, the knockdown of TGIF1 could abolish the regulatory effect of XTP8 on GC cell behaviors. CONCLUSIONS: XTP8 is upregulated in GC and is closely linked to lymphatic metastasis, distant metastasis, and poor prognosis of GC patients. Besides, it accelerates the malignant progression via negatively regulating TGIF1.


Subject(s)
GTPase-Activating Proteins/metabolism , Homeodomain Proteins/metabolism , Repressor Proteins/metabolism , Stomach Neoplasms/metabolism , Cell Movement , Cells, Cultured , Female , GTPase-Activating Proteins/genetics , Homeodomain Proteins/genetics , Humans , Male , Middle Aged , Repressor Proteins/genetics , Stomach Neoplasms/pathology
5.
Rev Sci Instrum ; 89(8): 085119, 2018 Aug.
Article in English | MEDLINE | ID: mdl-30184666

ABSTRACT

X-ray flash radiography is an effective diagnostic in implosive research. While scattering reduces the contrast of radiography, the anti-scattering grids can effectively intercept the scattered radiation and acquire better images. A focused sub-megavolt grid is elaborately manufactured with the combination of lithography, etching, and laser drilling. The consistency of Monte Carlo simulations and radiographic experiments suggests a transmission of about 36% and a 1000 times improvement for the signal to scatter ratio of the grid.

6.
Can Commun Dis Rep ; 43(7-8): 154-155, 2017 Jul 06.
Article in English | MEDLINE | ID: mdl-29770083

ABSTRACT

As of May 23, 2017, 29 cases of a new Escherichia coli O121 infection have been identified in six provinces (Alberta, British Columbia, Newfoundland and Labrador, Ontario, Quebec and Saskatchewan) linked with the consumption of uncooked flour. One additional case was identified in a U.S. resident who traveled to Canada during the exposure period. Patients' ages ranged from 2-79 years (median = 23.5 years) and 50% were female. Eight patients were hospitalized, and one developed hemolytic uremic syndrome. Because of the recent emergence of E. coli outbreaks linked to flour, public health professionals should consider flour as a possible source in E. coli outbreaks and communicate the risk associated with flour and raw batter/dough exposure in public health messaging.

7.
Zhonghua Yi Xue Za Zhi ; 96(30): 2424-6, 2016 Aug 09.
Article in Chinese | MEDLINE | ID: mdl-27545036

ABSTRACT

OBJECTIVE: To clarify the advantages and the influence to reproductive outcome after laparoscopic salpingotomy with and without suturing for tubal pregnancy. METHODS: We retrospectively analyzed the clinical data of patients underwent laparoscopic salpingotomy from March 2012 to October 2014 who were willing to reserve their reproductive function and were able to be followed up. Based on the operation procedure, the patients were assigned to undergo laparoscopic salpingotomy with suturing (group A; n=49) or without suturing (group B; n=69). An amount of 50 mg methopterin was injected at mesosalpinx during operation in all cases. Tubal patency of the trouble side was evaluated by liquid instillation. The operation time, amount of bleeding, the trouble side tubal patency rate 3 months after the surgery, pregnancy outcome 12 months after the surgery was compared between two groups. RESULTS: Three months after the surgery the tubal patency rate of trouble side was 85.71% (42/49) in group A and 62.32% (43/69) in group B. There was significant differences (P<0.05) between two groups. Within twelve months of the surgery, the intrauterine gestation rate was 69.39% (34/49) in group A and 42.03% (29/69) in group B. Ectopic re-pregnancy rate of the trouble side was 10.20% (5/49) in group A and 27.54% (19/69) in group B. Secondary infertility rate was 14.29% (7/49) in group A and 27.54% (19/69) in group B. There was significant differences (P<0.05) between two groups. The trouble side tubal patency rate and intrauterine gestation rate of group A was significantly higher than that of group B, while the ectopic re-pregnancy rate of the trouble side and secondary infertility rate of group A was significantly lower than that of group B. CONCLUSIONS: Suturing after laparoscopic salpingotomy can decrease the damage to fallopian tube and recover its normal anatomic structure. So the procedure involving suturing can effectively reserve reproductive function for the patients.


Subject(s)
Pregnancy, Tubal , Fallopian Tubes , Female , Humans , Laparoscopy , Pregnancy , Pregnancy Outcome , Pregnancy Rate , Plastic Surgery Procedures , Retrospective Studies , Sutures
8.
Cell Death Dis ; 7(6): e2281, 2016 06 30.
Article in English | MEDLINE | ID: mdl-27362799

ABSTRACT

Wingless-related MMTV integration site (WNT) proteins and several other components of the WNT signalling pathway are expressed in the murine testes. However, mice mutant for WNT signalling effector ß-catenin using different Cre drivers have phenotypes that are inconsistent with each other. The complexity and overlapping expression of WNT signalling cascades have prevented researchers from dissecting their function in spermatogenesis. Depletion of the Gpr177 gene (the mouse orthologue of Drosophila Wntless), which is required for the secretion of various WNTs, makes it possible to genetically dissect the overall effect of WNTs in testis development. In this study, the Gpr177 gene was conditionally depleted in germ cells (Gpr177(flox/flox), Mvh-Cre; Gpr177(flox/flox), Stra8-Cre) and Sertoli cells (Gpr177(flox/flox), Amh-Cre). No obvious defects in fertility and spermatogenesis were observed in these three Gpr177 conditional knockout (cKO) mice at 8 weeks. However, late-onset testicular atrophy and fertility decline in two germ cell-specific Gpr177 deletion mice were noted at 8 months. In contrast, we did not observe any abnormalities of spermatogenesis and fertility, even in 8-month-old Gpr177(flox/flox), Amh-Cre mice. Elevation of reactive oxygen species (ROS) was detected in Gpr177 cKO germ cells and Sertoli cells and exhibited an age-dependent manner. However, significant increase in the activity of Caspase 3 was only observed in germ cells from 8-month-old germ cell-specific Gpr177 knockout mice. In conclusion, GPR177 in Sertoli cells had no apparent influence on spermatogenesis, whereas loss of GPR177 in germ cells disrupted spermatogenesis in an age-dependent manner via elevating ROS levels and triggering germ cell apoptosis.


Subject(s)
Intracellular Signaling Peptides and Proteins/metabolism , Receptors, G-Protein-Coupled/metabolism , Spermatogenesis , Wnt Signaling Pathway , Aging , Animals , Atrophy , Epididymis/metabolism , Epididymis/pathology , Fertility , Gene Deletion , Gene Targeting , Intracellular Signaling Peptides and Proteins/deficiency , Male , Mice, Inbred C57BL , Mice, Knockout , Models, Animal , Oxidative Stress , Receptors, G-Protein-Coupled/deficiency , Spermatozoa/metabolism , Testis/metabolism , Testis/pathology , Wnt Proteins/metabolism
9.
Epidemiol Infect ; 143(15): 3220-6, 2015 Nov.
Article in English | MEDLINE | ID: mdl-26018109

ABSTRACT

A tuberculosis (TB) case was reported May 2008 in Kelowna, British Columbia, leading to a multi-year outbreak in homeless persons. The epidemiological characteristics and social networks of cases are described. Outbreak-related cases were identified from epidemiological information in medical records and from genotyping of TB isolates. Social network information from case interviews were used to identify potential locations of TB transmission, where symptom screening and tuberculin skin testing was conducted. Fifty-two cases that were predominantly male (47/52), Canadian-born (44/50), and were homeless or associated with homeless individuals (42/52) were reported from May 2008 to May 2014. Many isolates (40/49) had partial resistance to isoniazid. Transmission primarily occurred at two homeless shelters, with potential further transmission at sites visited by the general population. TB outbreaks in homeless populations can occur in small, low-incidence cities. Social network information helped prioritize sites for TB screening, thereby improving detection of persons with TB disease or latent infection for treatment.


Subject(s)
Disease Outbreaks , Ill-Housed Persons/statistics & numerical data , Social Support , Tuberculosis, Pulmonary/epidemiology , Adult , Aged , Aged, 80 and over , Antitubercular Agents/therapeutic use , British Columbia/epidemiology , Contact Tracing , Drug Resistance, Bacterial , Female , Housing , Humans , Isoniazid/therapeutic use , Male , Middle Aged , Mycobacterium tuberculosis/isolation & purification , Mycobacterium tuberculosis/physiology , Treatment Outcome , Tuberculosis/drug therapy , Tuberculosis/epidemiology , Tuberculosis/microbiology , Tuberculosis, Pulmonary/diagnosis , Tuberculosis, Pulmonary/drug therapy , Tuberculosis, Pulmonary/microbiology , Young Adult
10.
J Biol Regul Homeost Agents ; 29(1): 85-92, 2015.
Article in English | MEDLINE | ID: mdl-25864744

ABSTRACT

Signal transducers and activators of transcription (STAT) play critical roles in development, proliferation, and immune defense. However the consequences of STAT hyperactivity can predispose to diseases, including colorectal cancer. In the present study, we aimed to evaluate the function of STAT4 in human colorectal cancer (CRC). The expression of STAT4 was examined by immunohistochemical assay using a tissue microarray procedure. A loss-of-function experiment was carried out to investigate the effects of lentivirus-mediated STAT4 shRNA (Lv-shSTAT4) on cell proliferation and invasive potential indicated by MTT and Transwell assays in CRC cell lines (SW480 and Caco2). As a consequence, it was found that the expression of STAT4 protein was significantly increased in CRC tissues compared with that in adjacent non-cancerous tissues (ANCT) (71.1% vs 44.4%, P=0.015), and was related with the Duke’s staging and depth of invasion in CRC patients (P=0.022; P=0.001). Silencing of STAT4 gene suppressed cell proliferation and invasion of CRC cells. Taken together, these findings demonstrate that increased expression of STAT4 is positively correlated with the depth of invasion in CRC patients, and inhibition of STAT4 expression represses the growth and invasion of CRC cells, suggesting that STAT4 may be a promising therapeutic target for the treatment of CRC.


Subject(s)
Colorectal Neoplasms/genetics , Colorectal Neoplasms/pathology , Gene Silencing , STAT4 Transcription Factor/genetics , Caco-2 Cells/pathology , Cell Line, Tumor , Cell Movement/genetics , Cell Proliferation/genetics , Colorectal Neoplasms/metabolism , Female , Gene Expression Regulation, Neoplastic , Humans , Male , Middle Aged , RNA, Small Interfering , STAT4 Transcription Factor/metabolism
11.
Genet Mol Res ; 14(1): 609-18, 2015 Jan 30.
Article in English | MEDLINE | ID: mdl-25729996

ABSTRACT

Persimmon (Diospyros L.) is an economically important fruit in the world, and it has been recognized as a healthy nutrient supply for human consumption. In this study, 14 microsatellite markers were developed from an AG/TC and AC/TG-enriched genomic library of Chinese persimmon Mopanshi. Twelve polymorphic markers were selected in 4 related species; these markers showed transferability to the 4 related persimmon species. In addition, 10 simple sequence repeat (SSR) markers were used to detect the genetic diversity among 51 persimmon accessions from China, Japan, and Korea. A total of 57 polymorphic bands with an average of 5.7 bands per primer pair were observed. According to cluster analysis and principal coordinate analysis, all persimmon accessions could be divided into 4 groups. A close relationship existed between D. kaki and D. oleifera, and D. glaucifolia and D. lotus. Jinzaoshi could be considered a separate species of persimmon. These new SSR markers provide tools for evaluating genetic relatedness among different persimmon species.


Subject(s)
Diospyros/genetics , Microsatellite Repeats/genetics , Cluster Analysis , Genetic Loci , Genotype , Phylogeny , Polymorphism, Genetic , Principal Component Analysis , Species Specificity
12.
Eur Rev Med Pharmacol Sci ; 19(24): 4784-90, 2015 Dec.
Article in English | MEDLINE | ID: mdl-26744869

ABSTRACT

OBJECTIVE: Glioblastoma is the most aggressive tumor of the brain. To further understand its molecular mechanism, we carried out a systemic bioinformatics study of gene chips downloaded from Gene Expression Omnibus database. MATERIALS AND METHODS: LIMMA package in R language was used to identify the differentially expressed genes (DEGs) between glioblastoma samples and normal controls. RESULTS: Further, we constructed protein-protein interaction networks by mapping the DEGs into PPI data and identified network clusters in these networks. The results revealed that expression of 516 genes, which are mainly involved in phosphate metabolic process and signal transduction, were altered in glioblastoma samples. LYN, CD22 and LCP2 form a densely protein complex in the PPI network. CONCLUSIONS: Our results suggest that LYN, CD22 and LCP2 play important roles in the occurrence and progression of glioblastoma.


Subject(s)
Gene Expression Profiling/methods , Glioblastoma/genetics , China , Computational Biology/methods , Gene Regulatory Networks/genetics , Glioblastoma/pathology , Humans , Oligonucleotide Array Sequence Analysis , Protein Interaction Maps/genetics , Signal Transduction/genetics
13.
Genet Mol Res ; 13(4): 9220-8, 2014 Nov 07.
Article in English | MEDLINE | ID: mdl-25501144

ABSTRACT

Gene expression data acquired at different times after traumatic brain injury (TBI) were analyzed to identify differentially expressed genes (DEGs). Interaction network analysis and functional enrichment analysis were performed to extract valuable information, which may benefit diagnosis and treatment of TBI. Microarray data were downloaded from Gene Expression Omnibus and pre-treated with MATLAB. DEGs were screened out with the SAM method. Interaction networks of the DEGs were established, followed by module analysis and functional enrichment analysis to obtain insight into the molecular mechanisms. A total of 39 samples at six time points (30 min, 4, 8, 24 , 72 h, and 21 days) were analyzed and generated 377 DEGs. Eight modules were identified from the networks and network ontology analysis revealed that cell surface receptor-linked signaling pathway, response to wounding and signaling pathway were significantly overrepresented. Altered risk genes and modules in TBI were uncovered through comparing the gene expression data acquired at various time points. These genes or modules could be potential biomarkers for diagnosis and treatment of TBI.


Subject(s)
Brain Injuries/genetics , Gene Expression Profiling , Gene Regulatory Networks , Oligonucleotide Array Sequence Analysis , Animals , Down-Regulation/genetics , Mice , Up-Regulation/genetics
14.
Br J Radiol ; 87(1042): 20140276, 2014 Oct.
Article in English | MEDLINE | ID: mdl-25051977

ABSTRACT

OBJECTIVE: This meta-analysis is to determine the overall diagnostic yield of CT-guided transthoracic needle biopsy (TNB) of ground-glass opacity (GGO) lesions. METHODS: A PubMed search was performed using "ground-glass opacity" crossed with "core biopsy" and "needle biopsy". Test performance characteristics with the use of forest plots, summary receiver operating characteristic curves and bivariate random effects models were summarized. Adverse events, if reported, were recorded. RESULTS: Our search identified 52 citations, of which 6 diagnostic studies evaluated 341 patients. Pooled specificity estimates were 0.94 [95% confidence interval (CI), 0.84-0.98] and sensitivity estimates were 0.92 (95% CI, 0.88-0.95), respectively. The positive likelihood ratio was 11.27 (95% CI, 4.2-30.6), the negative likelihood ratio was 0.1 (95% CI, 0.06-0.19), the diagnostic odds ratio was 131.38 (95% CI, 39.6-436.0) and the area under the curve was 0.97. CONCLUSION: Our data suggest that the CT-guided TNB is likely to be a useful tool for tissue diagnosis and may serve as an alternative for further patient management with GGO lesions. However, considering the limited studies and patients included, large scale studies are needed to verify these findings. ADVANCES IN KNOWLEDGE: Some studies about CT-guided TNB of GGO lesions have been published, most have been small, single-institution case series. To our knowledge, our study is the first systematic analysis about CT-guided TNB of GGO lesions.


Subject(s)
Image-Guided Biopsy , Lung Neoplasms/diagnostic imaging , Lung Neoplasms/pathology , Radiography, Interventional/methods , Tomography, X-Ray Computed/methods , Adult , Biopsy, Needle , Female , Humans , Lung/diagnostic imaging , Male , Middle Aged , ROC Curve , Sensitivity and Specificity
15.
Genet Mol Res ; 13(1): 1097-108, 2014 Feb 20.
Article in English | MEDLINE | ID: mdl-24634131

ABSTRACT

Sequence-related amplified polymorphism (SRAP) and inter-simple sequence repeat (ISSR) markers were used to assess the genetic diversity within and among 15 natural populations of Stipa bungeana from the Loess Plateau of China. Using 15 SRAP primers, 504 (99.80%) polymorphic loci were detected, and 372 polymorphic loci (96.12%) were identified using 15 ISSR primers. At the species level, the S. bungeana populations showed relatively low levels of genetic diversity (HE = 0.2017 for SRAP; HE = 0.2066 for ISSR). The results of analysis of molecular variance indicated that genetic variation within populations (42.02% for SRAP and 38.40% for ISSR) is lower than that among populations (57.98% for SRAP and 61.60% for ISSR). The genetic distance was significantly correlated with geographical distance by the Mantel test (r = 0.3978, P = 0.002). Our results demonstrated that both SRAP and ISSR markers are effective and reliable for assessing the genetic diversity of S. bungeana. In addition, these data inform conservation and breeding strategies for S. bungeana.


Subject(s)
Genetic Variation , Nucleic Acid Amplification Techniques/methods , Poaceae/genetics , China , DNA, Plant/analysis , Gene Flow , Genetic Markers , Microsatellite Repeats , Phylogeography , Poaceae/metabolism , Polymorphism, Genetic
16.
Eur Rev Med Pharmacol Sci ; 18(1): 101-7, 2014.
Article in English | MEDLINE | ID: mdl-24452950

ABSTRACT

BACKGROUND: Traumatic brain injury (TBI) is a serious neurodisorder commonly caused by sports related events or violence. It is the leading cause of disability in people under 40. AIM: In order to elucidate the molecular mechanism of the secondary injury after TBI. MATERIALS AND METHODS: In this study, we downloaded gene expression profile on TBI model with sham controls for gene set enrichment analysis and pathway analysis. RESULTS: At a q-value of 5%, 361 genes were up-regulated and 373 were down-regulated in samples obtained at 48 hours after TBI. Functional analyses revealed that steroid biosynthesis, cell cycle, metal ion transport, inflammation and apoptosis were significantly dysregulated during the late period after trauma. In addition, MAPK3 (mitogen-activated protein kinase 3), was identified as the hub node in the protein-protein interaction (PPI) network constructed by the differentially expressed genes (DEGs). CONCLUSIONS: Further elucidation of genes and proteins in our study may reveal their potential as novel therapeutic targets.


Subject(s)
Brain Injuries/genetics , Cerebral Cortex/metabolism , Gene Expression Profiling , Animals , Computational Biology , Databases, Genetic , Oligonucleotide Array Sequence Analysis , Protein Interaction Mapping , Rats
17.
Clin Radiol ; 69(2): 137-44, 2014 Feb.
Article in English | MEDLINE | ID: mdl-24161459

ABSTRACT

AIM: To describe the multidetector computed tomography (MDCT) features of primary, locally recurrent, and metastatic duodenal gastrointestinal stromal tumours (GISTs). MATERIALS AND METHODS: In this institutional review board-approved, Health Insurance Portability and Accountability Act of 1996 (HIPAA)-compliant, retrospective study, 25 patients [13 men, 12 women; mean age 56 years (34-74 years)] with histopathologically confirmed duodenal GISTs seen at Dana Farber Cancer Institute and Brigham and Women's Hospital from December 1999 to October 2009 were identified. The MDCT of primary tumours in six patients and follow-up imaging in all the 25 patients was reviewed by two radiologists in consensus. Electronic medical records were reviewed to document the clinical characteristics and management. RESULTS: The mean size of the primary tumour was 3.7 cm (range 2.5-5.6 cm). Three of six primary tumours were in the second and third portions of the duodenum, one in the third portion, one in the third and fourth portions, and one in the fourth portion. Three of six of the tumours were exophytic, two were both exophytic and intraluminal, and one was intramural. The tumours were well-circumscribed, round or oval masses, with few lobulations, and were either homogeneously hyper-enhancing or heterogeneously isodense at MDCT. None of the tumours had necrosis, haemorrhage, calcification, or loco regional lymphadenopathy on imaging. Sixteen of 25 (64%) patients developed metastatic disease, the most common sites being liver (14/16; 87.5%) and peritoneum (5/16; 31%). CONCLUSION: Duodenal GISTs are well-circumscribed, round or oval masses, and occur in the second through fourth portions of the duodenum, without lymphadenopathy or duodenal obstruction. Duodenal GISTS metastasize frequently to the liver and peritoneum.


Subject(s)
Duodenal Neoplasms/diagnostic imaging , Gastrointestinal Stromal Tumors/diagnostic imaging , Multidetector Computed Tomography/methods , Neoplasm Recurrence, Local/diagnostic imaging , Adult , Aged , Contrast Media , Duodenal Neoplasms/pathology , Duodenal Neoplasms/secondary , Duodenum/diagnostic imaging , Female , Gastrointestinal Stromal Tumors/pathology , Gastrointestinal Stromal Tumors/secondary , Humans , Image Processing, Computer-Assisted/methods , Male , Middle Aged , Observer Variation , Radiographic Image Enhancement/methods , Retrospective Studies
18.
Genet Mol Res ; 12(2): 1962-73, 2013 Jun 13.
Article in English | MEDLINE | ID: mdl-23913379

ABSTRACT

The genetic diversity among 80 Vitis materials including 62 indigenous accessions of 17 wild Vitis species in China and 7 interspecific hybrids, 10 V. vinifera L. cultivars, and 1 V. riparia Michaux were evaluated by simple sequence repeat and sequence-related amplified polymorphism markers. A total of 10 simple sequence repeat primers and 11 sequence-related amplified polymorphism primer combinations were amplified, and 260 bands were generated, of which 252 were polymorphic with an average polymorphism rate of 97.02%. Genetic relationships among the different Vitis species indicated that V. ficifolia and V. yeshanensis could be considered a separate species. As for the 4 major ecogeographic regions of Chinese wild Vitis species, the genetic diversities of Chinese wild Vitis species from the Qinling Mountain region (H = 0.1947, I = 0.3067) and the mid-downstream Yangtze River region (H = 0.1834, I = 0.2925) were higher, with results suggesting that these regions may be one of the major centers of Vitis origin. An understanding of the genetic diversity of these Chinese wild Vitis species could provide the theoretical foundation for further protection and reasonable utilization in grape breeding.


Subject(s)
Genetic Variation , Vitis/genetics , Base Sequence , DNA Primers , DNA, Plant , Genetic Markers , Microsatellite Repeats , Molecular Sequence Data , Phylogeny , Polymorphism, Genetic , Species Specificity
19.
Eur Rev Med Pharmacol Sci ; 17(2): 143-51, 2013 Jan.
Article in English | MEDLINE | ID: mdl-23377801

ABSTRACT

BACKGROUND: In recent years, mutations in glucocerebrosidase gene (GBA), which encodes the lysosomal enzyme glucocerebrosidase (GCase) deficient in Gaucher disease (GD), were found to be the most widespread genetic for the development of Parkinson disease. AIM: In this work, we investigated the possibility of a biological linkage between GCase and alpha-synuclein. MATERIALS AND METHODS: siRNA was used to knockdown the GBA, then the related proteins such as alpha-synuclein were detected, additionally, the mutations of GBA were also detected. We also provide evidence that a mouse model of Gaucher disease (GBAD409H/D409H) to detect the gene types of GBA. RESULTS: The results showed functional knockdown (KD) of GBA in neuroblastoma cells culture causes a significant accumulation of alpha-synuclein and alpha-synuclein-mediated neurotoxicity. Furthermore, KD of GBA in rat primary neurons expressing the A53T mutation of alpha-synuclein, decreases cell viability. In addition, we observed that overexpression of several GBA mutants (N370S, L444P, D409H, D409V) significantly raised human alpha-syn levels of vector control. Glucosylceramide (GlcCer), the GCase substrate, influenced formation of purified a-syn by stabilizing soluble oligomeric intermediates. We also provide evidence that a mouse model of Gaucher disease (GBAD409H/D409H) exhibited alpha-syn aggregates in substantia nigra, cortex and hippocampus regions. ELISA analysis showed a significant rise in membrane-associated α-syn and western blot analysis showed that two forms of alpha-syn oligomers were present in brain homogenates from the hippocampus D409H mice. CONCLUSIONS: These studies support the contention that both WT and mutant GBA can cause Parkinson disease-like alpha-synuclein pathology.


Subject(s)
Glucosylceramidase/physiology , Parkinson Disease/etiology , Animals , Brain Chemistry , Cell Line, Tumor , Female , Humans , Mice , Parkinson Disease/enzymology , Proteins/physiology , Rats , Rats, Sprague-Dawley , alpha-Synuclein/analysis , alpha-Synuclein/physiology
20.
Neth Heart J ; 19(3): 112-118, 2011 Mar.
Article in English | MEDLINE | ID: mdl-21475411

ABSTRACT

OBJECTIVE: To evaluate a 30-day and long-term outcome of patients with acute myocardial infarction (AMI) treated with intra-aortic balloon pump (IABP) counterpulsation and to identify predictors of a 30-day and long-term all-cause mortality. METHODS: Retrospective cohort study of 437 consecutive AMI patients treated with IABP between January 1990 and June 2004. A Cox proportional hazards model was used to identify predictors of a 30-day and long-term all-cause mortality. RESULTS: Mean age of the study population was 61 ± 11 years, 80% of the patients were male, and 68% had cardiogenic shock. Survival until IABP removal after successful haemodynamic stabilisation was 78% (n = 341). Cumulative 30-day survival was 68%. Median follow-up was 2.9 years (range, 6 months to 15 years). In patients who survived until IABP removal, cumulative 1-, 5-, and 10-year survival was 75%, 61%, and 39%, respectively. Independent predictors of higher long-term mortality were prior cerebrovascular accident (hazard ratio (HR), 1.8; 95% confidence interval (CI), 1.0-3.4), need for antiarrhythmic drugs (HR, 2.3; 95% CI, 1.5-3.3), and need for renal replacement therapy (HR, 2.3; 95% CI, 1.2-4.3). Independent predictors of lower long-term mortality were primary percutaneous coronary intervention (PCI; HR, 0.6; 95% CI, 0.4-1.0), failed thrombolysis with rescue PCI (HR, 0.5; 95% CI, 0.3-0.9), and coronary artery bypass grafting (HR, 0.3; 95% CI, 0.1-0.5). CONCLUSIONS: Despite high in-hospital mortality in patients with AMI treated with IABP, a favourable number of patients survived in the long-term. These results underscore the value of aggressive haemodynamic support of patients throughout the acute phase of AMI.

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