To explore the utility of apparent diffusion coefficient(ADC)histogram analysis for differentiating genetic subtypes of diffuse lower-grade gliomas. A total of 55 patients with WHO grade Ⅱ/Ⅲ diffuse lower-grade gliomas who underwent preoperative routine brain magnetic resonance imaging and diffusion weighted imaging in our center were retrospectively evaluated.Among whom there were 14 patients with isocitrate dehydrogenase(IDH)wild-type gliomas(IDH group),19 patients with IDH-mutant 1p19q intact gliomas(IDH 1p19q group),and 22 patients with IDH-mutant 1p19q co-deleted gliomas(IDH 1p19q group).The whole-lesion ADC values derived from histogram analysis(including ADC,ADC,ADC5%,ADC10%,ADC25%,ADC50%,ADC75%,ADC90%,ADC95%,ADC,mode,range,skewness,kurtosis,standard deviation,inhomogeneity,and entrophy)were measured for each patient.All parameters between the different genetic subtypes were compared by using the Student's test or Mann-Whitney test.Receiver operating curve(ROC)analysis was used to assess the diagnostic performance of ADC histogram in distinguishing the different genetic subtypes. Compared with IDH group,the ADC75%(=0.021),ADC90%(=0.015),ADC95%(=0.014),ADC (=0.035),range(=0.009),standard deviation(=0.001)and inhomogeneity(=0.001)were significantly lower in IDH group;in contrast,the ADC (=0.031)and kurtosis(=0.020)of IDH group were significantly higher than those in IDH group.The ADC(=0.010),ADC5%(=0.016),ADC10%(=0.012),ADC25%(=0.007),ADC50%(=0.005),ADC75%(=0.015),and mode(=0.002)were significantly higher in IDH 1p19q group than in IDH 1p19q group.Inhomogeneity achieved the highest area under ROC(AUC)(0.811)in differentiating IDH gliomas and IDH gliomas,with a cutoff value of 0.229;the sensitivity and specificity were 85.7% and 73.2%.The mode achieved the highest AUC(0.744)in differentiating IDH 1p19q gliomas and IDH 1p19q gliomas,with a cutoff value was 1448.75×10 mm /s;the sensitivity and specificity were 57.9% and 90.9%. ADC histograms analysis may be helpful to differentiate genetic subtypes in lower-grade gliomas.
Brain Neoplasms ; Diffusion Magnetic Resonance Imaging ; Glioma ; Humans ; ROC Curve ; Retrospective Studies

Bronchopulmonary Sequestration ; classification ; pathology ; surgery ; Humans ; Infant ; Lung ; diagnostic imaging ; Male ; Radiography ; Respiratory System Abnormalities ; diagnosis ; surgery

OBJECTIVETo investigate the incidence of testicular appendages, observe their morphology, and analyze their histopathological origins.

METHODSWe observed 67 testes in 54 patients (15 children and 39 adults) undergoing scrotal surgery, investigated the incidence of testicular appendages, and identified their histopathological origins. We used the Chi-square test to compare the findings from the children and adult patients, with P < 0.05 as statistically significant.

RESULTSThe detection rates of the appendix testis, appendix epididymis, paradidymis, vas aberrans superior, and vas aberrans inferior were 80.6% (54/67), 23.9% (16/67), 1.5% (1/67), 3.0% (2/67), and 1.5% (1/67), respectively. The incidence of testicular appendages was higher in children than in adults (93.3% vs 80.8%), but with no statistically significant difference (Chi2 = 1.339, P > 0.05), and that of the appendix testis and epididymis with pedicles was significantly higher in the former than in the latter (82.4% vs 54.7%, chi2 = 4.149, P < 0.05). Pathological examination showed that the appendix testis originated from the paramesonephric duct, while the appendix epididymis, paradidymis, vas aberrans superior, and vas aberrans inferior from the mesonephric duct.

CONCLUSIONTesticular appendages consist of five embryonic remnants, including appendix testis, appendix epididymis, paradidymis, vas aberrans superior, and vas aber- rans inferior. The appendix testis originates from the paramesonephric duct, and the other four from the mesonephric duct. The clinical implication of these testicular appendages is their tendency to torsion.

Adolescent ; Adult ; Aged ; Aged, 80 and over ; Child ; Child, Preschool ; Epididymis ; pathology ; Humans ; Infant ; Male ; Middle Aged ; Testis ; pathology ; Young Adult

The study aimed to clone the open reading frame of cinnamate 4-hydroxylase (C4H) from Aquilaria sinensis and analyze the bioinformatics and expression of the gene. One unique sequence containing C4H domain was discovered in our previous reported wound transcriptome dataset of A. sinensis. The open reading frame of C4H was cloned by RT-PCR strategy with the template of mixed RNA extracted from A. sinensis stem which treated by different wound time. The bioinformatic analysis of this gene and its corresponding protein was performed. C4H expression profiles in responds to MeJA (methyl jasmonate) application were analyzed by real-time PCR. The length of C4H open reading frame (ORF) was 1 515 bp, encoding 514 amino acids. The GenBank accession number is KF134783. Inducible-experiments showed that the genes were induced by mechanical wound as well as MeJA induction, and reached the highest expression level at 8 h and 20 h, respectively. The full-length cDNA of C4H and its expression patterns will provide a foundation for further research on its function in the molecular mechanisms of aromatic compounds and flavonoids biosynthesis.
Amino Acid Sequence ; Cloning, Molecular ; Models, Molecular ; Molecular Sequence Data ; Open Reading Frames ; Oxidoreductases ; chemistry ; genetics ; metabolism ; Phylogeny ; Plant Proteins ; chemistry ; genetics ; metabolism ; Thymelaeaceae ; chemistry ; enzymology ; genetics ; Trans-Cinnamate 4-Monooxygenase ; chemistry ; genetics ; metabolism

Seven compounds were isolated from Onychium japonicum by macroporous resin, silica gel, ODS, Sephadex LH-20 column chromatography and semi-preparative HPLC. Their structures were identified by NMR, MS and other spectroscopic methods as onychone A (1), quercetin (2), quercetin-3-O-α-L-rhamnoside (3), kaempferol-7-O-β-D-glucopyranoside (4), kaempferol-3-O-α-L-rhamnopyranoside (5), (-)-prunin (6), and norathyriol (7). Compound 1 is a novel macrocyclic flavonoid, and all the others are reported from this plant for the first time. In vitro cytotoxic activities of compounds 1-7 were evaluated by MTS testing with five cancer cell lines. Compound 7 exhibited weak cytotoxicity against tumor cell lines A549, SMMC-7721, and SW480.

Objective To investigate the association between cutaneous adverse drug reactions (CADRs) caused by antiepileptic drugs and HLA-B*1502 allele. Methods In 31 epileptic patients presented to the Epilepsy Clinic of the Second Affiliated Hospital of Guangzhou Medical College between January 2007 and May 2008, 13 had CADR to carbanazepine (CBZ) including 6 with Stevens-Johnson syndrome (SJS) and 7 with mild maculopapular exanthona (MPE);15 were CBZ-tolerant, and 3 had lamotrigine (LTG)-indueed MPE. All the patients underwent examinations using polymerase chain reaction with sequence specific palmers to analyze HLA -B*1502 allele frequencies, with 30 healthy subjects without a history of using CBZ or LTG as the control. Results HLA-B*IS02 allele frequency was 100% (6/6) in patients with CBZ-SJS, 57% (4/7) in patients with CBZ-induced MPE, and 33% (1/3) in patients with LTG-induced MPE. The frequency was 7% (1/15) in CBZ-tolerant patients and 10% (3/30) in the control subjects. Compared with the CBZ-tolerant patients and the control subjects, the patients with CBZ-induced SJS and MPE had significantly increased HLA -B*1502 allele frequency (P<0.05). Conclusions HLA-B*1502 allele is associated with CADRs to CBZ in epileptic patients.

OBJECTIVETo explore the effect of Changji'an Capsule (CA) on mRNA expressions of neuropeptide Y (NPY) in the hypothalamus and colon and serum levels of adreno-cortico-tropic hormone (ACTH) in rats of diarrhea predominant irritable bowel syndrome (IBS-D) model rats.

METHODSTotally 48 SD rats were randomly divided into six groups, i.e., the normal control group, the model group, the Pinaverium Bromide group (PB, 0.018 g/kg), the high dose CA group (2.812 g/kg), the medium dose CA group (1.406 g/kg), and the low dose CA group (0.703 g/kg), 8 in each group. The IBS-D rat model was established by using separation of breast milk + stimulation of acetic acid + constraint of four limbs. Normal saline was given to rats in the normal control group and the model group. All medication lasted for 14 successive days by gastrogavage. The serum content of ACTH was detected by enzyme linked immunosorbent assay (ELISA). The expressions of NPY mRNA in the colon and the hypothalamus were detected using real-time fluorescence quantitative PCR.

RESULTSCompared with the normal control group, the serum ACTH content significantly increased (P < 0.01), the NPY mRNA expression in the colon and the hypothalamus obviously decreased (P < 0.01) in the model control group. Compared with the model group, the serum ACTH obviously decreased in the high dose CA group, the medium dose CA group, and the PB group (P < 0.01, P < 0.05). The NPY mRNA expression in the colon and the hypothalamus were obviously up-regulated in the high dose CA group, the medium dose CA group, the low dose CA group, and the PB group (P < 0.05).

CONCLUSIONSCA could modulate the abnormity of brain-gut axis of IBS-D rats possibly by up-regulating NPY mRNA expressions in the hypothalamus and the colon and down-regulating the ACTH content in the hypothalamic-pituitary-adrenal axis.

Adrenocorticotropic Hormone ; blood ; Animals ; Colon ; metabolism ; Disease Models, Animal ; Drugs, Chinese Herbal ; pharmacology ; Female ; Hypothalamus ; metabolism ; Irritable Bowel Syndrome ; metabolism ; Male ; Neuropeptide Y ; metabolism ; RNA, Messenger ; genetics ; Rats ; Rats, Sprague-Dawley

OBJECTIVETo evaluate the impact of radiofrequency catheter ablation on left atrial (LA) size and function in patients with paroxysmal atrial fibrillation (PAF) and whether there is any difference between segmental pulmonary vein ostial isolation (SPVI) and circumferential pulmonary vein ablation (CPVA).

METHODSSixty-six patients with highly symptomatic atrial fibrillation were assigned to undergo either SPVI or CPVA. Transthorax echocardiography was performed before, 1 day, 1 months and 3 months after the procedure. LA dimension, LA area, late diastolic peak velocity of mitral valve inflow (A) and peak atrial systolic mitral annulus velocity (A') were recorded.

RESULTSOf 66 consecutive patients with symptomatic PAF, 30 patients underwent SPVI and 36 underwent CPVA. After a mean follow-up of (315 +/- 153) days, 21 patients (70%) after SPVI and 28 patients (75%) after CPVA were free of atrial tachyarrhythmia. As compared with the baseline, LA area decreased at 1-month after ablation in SPVI group and at 3-month in CPVA group. LA dimension decreased also in SPVI group, but did not in CPVA group. A velocity and A' velocity declined remarkably 1 day after CPVA, and restored 3 months later. The former went back to the level of baseline, and the latter exceeded it apparently. In SPVI group, A velocity increased at 1-month, and maintained in 3-month after ablation. A' velocity increased at 3-month after ablation. No reduction of A velocity or A' velocity was found after SPVI.

CONCLUSIONSThis study demonstrated a decrease in LA area and an improvement in LA systolic function 3 months after ablation for PAF. The LA damage by CPVA was more than that by SPVI, which was characterized by the reduction of LA function 1 day after procedure and the delayed improvement of LA size and functional parameters.

Adult ; Atrial Fibrillation ; diagnostic imaging ; physiopathology ; therapy ; Atrial Function, Left ; Catheter Ablation ; Female ; Follow-Up Studies ; Humans ; Male ; Middle Aged ; Pulmonary Veins ; Ultrasonography

Objective To understand the clinical features and prognosis of children with severe viral encephalitis (SVE), evaluate the related factors affecting prognosis. Methods Clinical data of 102 children with SVE in pediatric neurological ward and pediatric intensive care unit in Hunan Children's Hospital between January 2014 and January 2016 were analyzed retrospectively. According to prognosis, children were divided into good prognosis group(n =24, children's Glasgow outcome scale[CGOS]: 4 — 5) and poor prognosis group(n = 78, CGOS: 1 - 3), clinical data of two groups of children were compared, risk factors affecting the prognosis of SVE children were analyzed. Results In good prognosis group, 15 cases were cured and 9 had mild sequelae; in poor prognosis group, 14 cases died, 25 had severe sequelae, and 39 had moderate sequelae. The duration of fever and length of hospital stay in good prognosis group were both shorter than poor prognosis group, difference was statistically significant (both P く0.05). Multivariate unconditioned logistic regression analysis showed that adverse factors for prognosis of SVE were as follows: convulsive status, respiratory failure, longer fever period(＞5 days), severely abnormal electroen-cephalogram(EEG), head magnetic resonance imaging (MRI) lesions involving more than two sites or lesions involving the infratentorial, and stress hyperglycemia, odds ratio(OR) were 13.468, 4.580, 2.378, 10.196, 3.012, and 6.316 respectively. Conclusion SVE is a serious threat to quality of children's life, convulsive status, respiratory failure, longer fever period, severely abnormal EEG, head MRI lesions involving more than two sites or lesions involving the infratentorial, and stress hyperglycemia are risk factors for prognosis of SVE in children.

OBJECTIVEAge, body weight and dose have been shown as important influencing factors for sodium valproate plasma concentrations. However it is unclear whether there is interaction among them and whether the interaction could influence sodium valproate plasma concentrations. This study aimed to evaluate the influence of age, body weight and dose on plasma concentrations of sodium valproate and the interaction among them.

METHODSOne hundred and thirty-two children with epilepsy (age: 4 months-6 years, weight: 5-25 kg) were enrolled. Sodium valproate was administered at the dosage of 10-30 mg/kg/d. Plasma concentrations of sodium valproate were measured by high-performance liquid chromatography 3-5 days after administration. The relationship of sodium valproate plasma concentrations with age, body weight, and dose of sodium valproate was examined using variance analysis, pearson correlation analysis and stepwise regression analysis.

RESULTSAge (F=8.630, P<0.01), body weight (F=3.650, P<0.05) and dose of sodium valproate (F=11.720, P<0.01) were influencing factors for sodium valproate plasma concentrations. The interaction between age and oral dose (F=2.484, P<0.05) and the interaction of age and body weight with oral dose (F=4.923, P<0.01) had significant effects on sodium valproate plasma concentrations. Stepwise regression analysis showed that dose of sodium valproate and body weight were entered to the regression equation.

CONCLUSIONSAge, body weight and dose of sodium valproate as well as the interactions between age and dose and between age, body weight and dose were influencing factors for valproate plasma concentrations.

Age Factors ; Anticonvulsants ; blood ; Body Weight ; Child ; Child, Preschool ; Epilepsy ; drug therapy ; Female ; Humans ; Infant ; Male ; Regression Analysis ; Valproic Acid ; administration & dosage ; adverse effects ; blood