Objective To investigate the diagnostic value of texture analysis derived from conventional MR imaging in differentiating benign and malignant breast lesions. Methods Thirty-six patients with malignant breast lesion and 33 patients with benign breast lesion were retrospectively analyzed in our study. All patients underwent conventional MR imaging including axial T1WI, T2WI, and contrast-enhanced T1WI before surgery. Texture features were calculated from manually drawn ROIs by using MaZda software. The feature selection methods included mutual information (MI), Fishers coefficient, classification error probability combined with average correlation coefficients (POE + ACC) and the combination of the above three methods(FPM). These methods were used to identify the most significant texture features in discriminating benign breast lesion from malignant breast lesion. The statistical methods including raw data analysis (RDA), principal component analysis (PCA), linear discriminant analysis (LDA) and nonlinear discriminant analysis (NDA) were used to distinguish malignant breast lesion from benign breast lesion. The results were shown by misclassification rate. Results In the three kinds of sequences, the texture features for differentiating malignant breast lesion and benign breast lesion were mainly from T2WI which had the lowest misclassification rate 4.35%(3/69). The misclassification rates of the feature selection methods were similar in MI, Fisher coefficient and POE+ACC (15.94%to 56.52%for MI;17.39%to 56.52%for Fisher coefficient and 17.39%to 56.52%for POE+ACC). However, the misclassification rate of the combination of the three methods (4.35%to 53.62%for FPM) was lower than that of any other kind of method. In the statistical methods, NDA (4.35% to 27.54%) had lower misclassification rate than RDA (33.33% to 56.52%), PCA (33.33% to 53.62%) and LDA (15.94% to 44.93%). Conclusion Texture analysis of conventional MR imaging can provide reliably objective basis for differentiating benign from malignant breast lesions.

OBJECTIVE: To investigate the personality and mental health of the objects of substance (caffeine, cocaine, hallucinogens and so on) abstinence who got labor education and rehabilitation. METHODS: 258 male objects and 250 female objects of substance abstinence selected randomly from institutions of labor education and rehabilitation were assessed with MMPI and SCL-90. RESULTS: MMPI tests indicated the personality abnormality in the objects. SCL-90 tests manifested the mental health abnormality of them compared with Chinese models, especially in the female objects. CONCLUSION More attention should be paid on the mental health of the objects of substance abstinence.
Adolescent ; Adult ; Female ; Humans ; Hypochondriasis/psychology* ; MMPI ; Male ; Mental Health ; Middle Aged ; Paranoid Behavior/psychology* ; Personality Disorders/psychology* ; Personality Tests ; Psychiatric Status Rating Scales ; Substance Withdrawal Syndrome ; Substance-Related Disorders/rehabilitation* ; Surveys and Questionnaires

Objective:To investigate the value of autoantibodies and serum levels of IgG4 and CA19-9 in the diagnosis of IgG4 associated cholangitis (IgG4-SC).Methods:Detect the serum IgG4 and CA19-9 of 41 clinical cases of IgG4-SC patients,162 clinical cases of non IgG4-SC patients and 40 healthy human serum samples by immunoassay and direct chemiluminescence methods, also detect the antinuclear antibodies (ANA),anti neutrophil antibody (ANCA),anti smooth muscle antibody (SMA) and anti mitochondrial antibody (AMA) of the above serum samples by indirect immunofluorescence and analyze the detection results.Results:①The positive rates of ANA,ANCA,SMA and AMA in patients with IgG4-SC were 41.46%,7.32%,0 and 2.44%.Among them,the positive rate of ANA was significantly different from that of the normal control group(P<0.01),and the positive rate of SMA and AMA was significantly different from that of non IgG4-SC group(P<0.01),and so as the positive rate of ANCA do with that of PSC group.②The number of serum IgG4 and CA19-9 increased samples were significantly compared with the normal control group (P<0.01);the area under the ROC curve (AUC) was 0.979 and 0.646,respectively,and P<0.05.Conclusion:The high level of serum IgG4 and CA19-9 and autoantibody detection are of great accuracy and important clinical value in the differential diagnosis of IgG4-SC.

OBJECTIVETo investigate the expression of microRNA(miR)-21 and miR-125 in colorectal cancer (CRC) and its relationship with clinicopathological features.

METHODSQuantitative real-time PCR was applied to examine the expression of miR-21 and miR-125 in 100 primary CRC specimens which were diagnosed and operated in West China Hospital between 2006 and 2007, in comparison with the corresponding normal mucosa specimens. The relationship between the expression of miRNAs and clinicopathological features was analyzed.

RESULTSThe expression of miR-21 in CRC was up-regulated by 2.3 times compared to normal mucosa (P =0.025), while the expression of miR-125 was down-regulated by 3.3 times in comparison with normal mucosa (P =0.005). Furthermore, the expression of miR-21 was related to TNM stage (P =0.028) and local invasion (P =0.023). On the other hand, no significant relationship was found between the expression of miR-125 and clinicopathological features (P >0.05).

CONCLUSIONThe over-expression of miR-21 may play a role in the development and progression of CRC, while miR-125 may not be related to the pathogenesis of CRC.

Colorectal Neoplasms ; metabolism ; pathology ; Female ; Gene Expression Profiling ; Gene Expression Regulation, Neoplastic ; Humans ; Male ; MicroRNAs ; metabolism ; Middle Aged ; Neoplasm Staging ; RNA ; genetics ; Reverse Transcriptase Polymerase Chain Reaction

OBJECTIVETo explore the efficiency of a comprehensive surgical approach of genioglossus advancement and hyoid suspension (GAHM) plus uvulopalatopharyngoplasty (UPPP) for treating severe obstructive sleep apnea hypopnea syndrome (OSAHS) and to evaluate related factors on surgery outcomes.

METHODSEighteen patients with severe OSAHS (apnea hypopnea index, AHI > 40/h) confirmed with polysomnography received genioglossus advancement and hyoid suspension plus uvulopalatopharyngoplasty. The obstruction in both the oropharynx and the hypopharynx were evaluated by preoperative physical examination, fiberoptic pharyngolaryngoscopy, cephalometry, and computed tomography of the upper airway. The follow up was at least 6 months postoperatively. The Wilcoxon signed rank test was used to compare the preoperative and postoperative results by SPSS 11.0 for windows. The Mann-Whitney test was used to analyze the difference between responders and nonresponders.

RESULTSThe follow up time ranges from 6 to 24 months, there were statistically significance in all but body mass index (BMI) between preoperative and postoperative measurements. Mean AHI was reduced from preoperative (x +/- s, 63.8 +/- 16.3)/h to postoperative (23.6 +/- 19.5)/h, lowest mean oxygen saturation increased from 0.72 +/- 0.07 to 0.81 +/- 0.13(x +/- s). According to criterion at home, the 6-month rate of responder is 83%, if AHI <20/h and decreased by at least 50% as success, the rate of success is 67%. The age, posterior airway space (PAS) and percentage of time with oxyhemoglobin saturation below 0.90 (CT90) were (39.1 +/- 7.4) years, (8.3 +/- 0.9) mm, (18.5 +/- 10.9)% in responder, while (52.5 +/- 9.4) years, (6.8 +/- 1.3) mm, (37.7 +/- 23.6) % in nonresponder, and there are statistically significant between responder and nonresponder.

CONCLUSIONSGAHM plus UPPP is effective surgical approach for patients with severe OSAHS who suffer from oropharyngeal and hypopharyngeal obstruction. Age, PAS and CT90 were possible affective factors on surgical outcomes.

Adult ; Aged ; Humans ; Hyoid Bone ; surgery ; Male ; Middle Aged ; Otorhinolaryngologic Surgical Procedures ; methods ; Palate, Soft ; surgery ; Polysomnography ; Sleep Apnea, Obstructive ; surgery ; Treatment Outcome ; Uvula ; surgery

OBJECTIVETo investigate polymorphisms of homocysteine metabolism enzyme-related genes methionine synthase (MS) and methionine synthase reductase (MSR) in Buyi, Dong, Miao ethnics from Guizhou.

METHODSGenotypes of MS and MSR genes of healthy individuals from the three ethnic groups were determined with a TaqMan-MGB probe genotyping method and compared.

RESULTSFor Buyi, Dong and Miao ethnics from Guizhou, frequencies of MS gene 2756G allele were respectively 12.0%, 8.9% and 15.4%. However, no significant difference was found by statistics. Frequencies of MS A2756G alleles for the three ethnic groups are similar to those of Han Chinese from Beijing and Henan, Hui ethnics from Ningxia as well as European populations, but differ significantly from those of Japanese, Indians, Africans and Nigerians (P < 0.05). Frequencies of MSR gene 66 G allele were respectively 32.3%, 30.4% and 21.2% for Buyi, Dong and Miao ethnics. Miao is significantly lower than Buyi and Dong (P< 0.05). Frequencies of MSR gene A66G alleles for the three ethnic groups are similar to those of Han Chinese from Beijing and Guangdong, Japanese, Africans and Nigerians populations, but differ significantly from those of Indians and European (P< 0.05).

CONCLUSIONThe distributions of MS gene A2756G and MSR gene A66G polymorphisms have differed significantly between the three ethnic groups and individuals from various regions.

5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase ; genetics ; Adult ; Alleles ; Asian Continental Ancestry Group ; genetics ; China ; ethnology ; Ethnic Groups ; genetics ; Female ; Ferredoxin-NADP Reductase ; genetics ; Gene Frequency ; Genotype ; Humans ; Male ; Middle Aged ; Polymorphism, Single Nucleotide

OBJECTIVETo study the effect of the mitochondrial 12S rRNA mutations on aminoglycoside-induced and nonsyndromic hearing loss, to carry out the clinical and molecular characterization of five Han Chinese pedigrees with maternally transmitted aminoglycoside-induced and nonsyndromic hearing loss.

METHODSFive pedigrees of maternally transmitted aminoglycoside-induced and nonsyndromic hearing loss were collected, genomic DNA was extracted, and complete mitochondrial genomes and the gap junction protein beta 2 (GJB2) gene were amplified and sequenced.

RESULTSClinical evaluation revealed a wide range of severity, age-at-onset and audiometric configuration of hearing impairment in the matrilineal relatives in these families. The penetrance rates of hearing loss in these pedigrees were 17.6%, 50.0%, 66.7%, 31.3% and 23.1%, with an average of 37.7%, when aminoglycoside-induced deafness was included. Sequence analysis of the complete mitochondrial genomes in these pedigrees identified the known 1555A>G mutation and distinct sets of mitochondrial DNA(mtDNA) polymorphisms belonging to Eastern Asian haplogroups D4b2b, B4c1b1, F3, C1 and D5a, respectively. Of these variants, ND1 L89T and CO3 A200T mutations resided at the highly conservative regions. However, there were no functionally significant mutations in tRNAs and rRNAs or secondary known mutations. No hearing loss related GJB2 gene mutation was observed.

CONCLUSIONThe lack of significant mutation in the ruled out the possible involvement of GJB2 in the phenotypic expression of the 1555A>G mutation in those affected subjects. However, aminoglycosides, mtDNA variations and other nuclear modifier genes may play an important role in the phenotypic manifestation of the 1555A>G mutation in these Chinese families.

Adult ; Amino Acid Sequence ; Aminoglycosides ; adverse effects ; Animals ; Asian Continental Ancestry Group ; genetics ; Child ; Child, Preschool ; China ; ethnology ; Connexin 26 ; Connexins ; chemistry ; genetics ; DNA Mutational Analysis ; Ethnic Groups ; genetics ; Female ; Hearing Loss, Sensorineural ; chemically induced ; genetics ; Humans ; Inheritance Patterns ; genetics ; Male ; Molecular Sequence Data ; Mothers ; Pedigree ; Young Adult

OBJECTIVETo explore effectiveness of maxillomandibular advancement (MMA) in the treatment of obstructive sleep apnea/hypopnea syndrome (OSAHS).

METHODSMMA was performed in 10 OSAHS patients with mandibular dysplasia diagnosed by mandibular protrusion angle (SNB) < 75 degrees and a posterior airway space (PAS) < 11 mm. Six patients had uvulopalatopharyngoplasty (UPPP) also. Six patients had over 6 months postoperative follow up.

RESULTSThe blood loss was about 250-600 ml in the operation, and the serious complications didn't happen. The patients were satisfied with the postoperative facial change. Based on success criteria of 2009, of 5 patients showed highly responsive result and 1 patient was responsive (valid). rate was 83% and the responsive rate 100%. The snoring loudness score and Epworth sleepy score were reduced from preoperative 8 (6-10) and 15 (11-24) to postoperative 2 (0-4) and 5 (1-8). AHI was reduced from preoperative 52.2 (23.7-83.8) to postoperative 12.6 (7.6-31.8), lowest mean oxygen saturation increased from 0.64 (0.57-0.83) to 0.82 (0.78-0.93). Percentage of time with oxyhemoglobin saturation below 0.90 (CT90) reduced from 21.0% (12.0%-37.2%) to 2.0% (0%-8.0%).

CONCLUSIONSMMA is effective for the OSAHS patients with mandibular dysplasia.

Adult ; Female ; Humans ; Male ; Mandibular Advancement ; methods ; Middle Aged ; Sleep Apnea, Obstructive ; surgery ; Treatment Outcome

OBJECTIVETo investigate the feasibility and effectivity of using compound material of fibrin glue and DBM as scaffolds for cartilage tissue engineering.

METHODSChondrocytes isolated from articular cartilage were seeded into prepared scaffolds, after incubation for 4 weeks in vitro. Chondrocytes and fibrin glue and DBM constructs were implanted in the joint cave of rabbit. The specimens were excised at the 4th, 8th, 12th week, examined grossly analyzed by haematoxylin cosine, toluidine blues staining and type II collagen immunohistochemistry reaction. Wakitani score was counted to evaluate the repairing effect.

RESULTSGrossly analysis showed some ivory tissue filled the caves after 4 weeks and the caves were full filled with smooth surface after 12 weeks. The microscope showed a good deal of chondrocytes appeared after 8 weeks and more type II collagen than 4 weeks. Twelve weeks later, cartilage lacuna could be observed. The cells arrangement and the amount of type II collagen both showed the same as the natural one.

CONCLUSIONComplicated material of fibrin glue and DBM as scaffolds can be used as scaffolds for cartilage tissue engineering.

Animals ; Bone Matrix ; physiology ; transplantation ; Cartilage, Articular ; physiopathology ; surgery ; Cell Transplantation ; Cells, Cultured ; Chondrocytes ; physiology ; transplantation ; Female ; Fibrin Tissue Adhesive ; therapeutic use ; Male ; Rabbits ; Random Allocation ; Regeneration ; Tissue Adhesives ; therapeutic use ; Tissue Engineering ; Tissue Scaffolds

OBJECTIVETo investigate the expression differences of apoptosis-inducing factor (AIF) and caspase-3 among colorectal carcinoma, adenoma and normal mucosa, and to identify the relationship between AIF and caspase-3 expression in colorectal adenoma-carcinoma sequence.

METHODSFormalin-fixed paraffin embedded colorectal tissues from 174 cases, including 84 adenomas, 72 carcinomas, and 18 normal mucosa, were examined for expression of AIF and caspase-3 by streptavidin-peroxidase (SP) immunohistochemistry.

RESULTSThe positive rates of AIF and caspase-3 in colorectal adenoma were higher than those in normal mucosa (P <0.05). The positive rate of AIF in adenoma showed no significant difference compared to colorectal carcinoma (P >0.05). However, caspase-3 expression in adenomas was significantly higher than that in carcinoma (P <0.05). The positive rate of AIF in tubular adenoma was significantly higher than that in villous adenoma (P <0.05), while the positive expression rate of caspase-3 in the two types of adenoma showed no significant difference (P >0.05). AIF expression had no prominent correlation with the caspase-3 expression (P >0.05).

CONCLUSIONSThe dysregulation of caspase-independent pathway of apoptosis may be an early event in the development of colorectal carcinogenesis, while the dysregulation of the caspase-dependent pathway of apoptosis may be one of contributing factors of colorectal carcinogenesis. The caspase-independent pathway of apoptosis and the caspase-dependent pathway of apoptosis are two relatively independent pathways in colorectal carcinogenesis.

Adenoma ; metabolism ; pathology ; Adult ; Aged ; Apoptosis Inducing Factor ; metabolism ; Caspase 3 ; metabolism ; Colorectal Neoplasms ; metabolism ; pathology ; Female ; Humans ; Intestinal Mucosa ; metabolism ; pathology ; Middle Aged ; Young Adult