The optic nerve disease is a kind of diseases that seriously affect the visual function. In recent years, magnetic resonance diffusion tensor imaging ( DTI ) technology has been widely applied in the field of optic nerve diseases. Compared with the ophthalmic testing, such as optical coherence tomography imaging, visual evoked potential, field of vision, this method has obvious advantages. It not only can directly show the morphology changes of the optic nerve, visual pathway and visual cortex, but also can quantitatively analyze the morphological and pathological changes of the optic nerve, visual pathway and the visual cortex. This article reviews the imaging principle of diffusion tensor imaging, the progress and development prospect of diffusion tensor imaging in the study of the optic nerve diseases.

OBJECTIVETo explore the clinical effects of minor bone anchors and palmaris longus tendon graft in treating chronic mallet fingers deformity.

METHODSFrom January 2008 to June 2013, 26 patients with chronic mallet fingers deformity were treated with minor bone anchors and palmaris longus tendon graft. There were 18 males and 8 females, aged from 18 to 52 years old with an average of (32.0±1.3) years. Among them, 8 cases caused by machine injury, 6 cases by fall injury, 6 cases by sprain from fight, 4 cases by tendon spontaneous rupture, 2 cases by knife trauma. There was no tendon attachment of extensor tendon check in 16 cases, and with 0.3 to 0.5 cm tendon attachment in 10 cases. All patients had the flexion deformity and the disability of dorsiflexion activity. During operation, the distal interphalangeal joint was fixed in 10° to 20° dorsiflexion by a Kirshner wire, the minor bone anchor was used to reconstruct the extensor tendon insertion, the palmaris longus tendon slice was transplanted the decayed area of extensor tendon insertion. Four weeks postoperatively, the Kirshner wire was removed and the plaster external fixation was used, and the patient began function exercises. Postoperative complications were observed and fingers functions were assessed according to Dargan standard.

RESULTSThe patients were followed up from 6 to 14 months with an average of (5.0±0.3) months. Wound superficial infection occurred in 2 cases, the skin pressure ulcer in 2 cases, joint activities disability in 1 case; these symptoms got improvement after symptomatic treatment. Traumatic arthritis occurred in 2 cases, 1 case was improved after treatment, and 1 case had chronic pain for a long time. No internal fixation loosening or breakage and tendon rupture were found. According to Dargan standard to evaluate the finger function, 17 cases got excellent results, 8 good, and 1 poor.

CONCLUSIONIt is an effective way to treat the chronic mallet finger deformity using minor bone anchors and palmaris longus tendon graft, and the method has advantages of reliable fixation, easy operation, satisfactory effect and less complication.

Adolescent ; Adult ; Female ; Finger Injuries ; surgery ; Fracture Fixation, Internal ; Hand Deformities, Acquired ; surgery ; Humans ; Male ; Middle Aged ; Suture Anchors ; Tendon Transfer

Adult ; Aged ; Aged, 80 and over ; Carcinoma, Squamous Cell ; immunology ; pathology ; Cytokines ; blood ; Esophageal Neoplasms ; immunology ; pathology ; Female ; Humans ; Interferon-gamma ; blood ; Interleukin-10 ; blood ; Interleukin-12 ; blood ; Interleukin-4 ; blood ; Interleukin-5 ; blood ; Lymphatic Metastasis ; Male ; Middle Aged ; Th1 Cells ; immunology ; Th2 Cells ; immunology ; Tumor Necrosis Factor-alpha ; blood

· AIM: To investigate the complications of intravitreal triamsinolone acetonide (TA) injection in vitrectomy for proliferative diabetic retinopathy (PDR).· METHODS: From February 2005 to January 2007, 18patients (18 eyes) with PDR who were injected with TA in vitrectomy were observed retrospectively after surgery.· RESULTS: During a postoperative follow-up period of 3 to 6 months (mean 4.6 months), some complications including deposit of TA granules on the macular region and surface of the retina (3 eyes), postoperative vitreous hemorrhage (3eyes), elevated intraocular pressure (2 eyes) and pseudohypopyon (1 eye)were observed.· CONCLUSION: The complications after surgery such as deposit of TA granules on the macular region and surface of the retina and pseudohypopyon could be cured without any special treatment. All eyes with elevated intraocular pressure after surgery were controlled by drug. Re-operation may be an effective method for patients with unabsorbable vitreous hemorrhage after vitrectomy.

Objective To collect the families with generalized epilepsy with febrile seizures plus(GEFS+) and analyze the clinical status and heredity features of Chinese GEFS+.Voltaged-gated sodium channel ?1 subunit(SCN1B) gene of 2 families were detected,and expect to find new mutation sites.Methods All participant in the study of 2 families members were informed of voluntary participate in this investigation,health examination and blood sampling.All 6 gene exons of proband,patients and healthy control group were sequenced.The sequencing result was compared and analyzed with the normal sequence of genomic exon fragment and exon fragment sequencing result of control group through internet(BLAST).Results 1.A new G/A heterozygous polymorphism (G181A)was found in the 181th basyl of SCN1B gene exon 3,and codon was changed from TCG to TCA,both encoding serine (Ser,S).It was synonymous mutation.2.A new G/A heterozygous polymophism(G15A)was found in the 15th basyl of SCN1B gene exon 3,and codon was changed from GAG to GAA,both encoding glutamic acid(Glu,E).It belonged to synonymous mutation.3.A new T/C heterozygous polymorphism (T37C)was found in the 37th basyl of SCN1B gene exon 6.The patients genetype were:5 cases with T/C heterozygote,3 cases with T/T homozygote,2 cases with C/C homozygote.Healthy control group were all T/T homozygote.Allele frequency distribution for T was 55.0%,and 45.0% for C.4.A new A/C heterozygous polymorphism (A81C)was found in the 81th basyl of SCN1B gene exon 6.The patients genetype were:5 cases with A/C heterozygote,3 cases with A/A homozygote,2 cases with C/C homozygote.Healthy control group were all A/A homozygote.Allele frequency distribution for A was 55.0%,and 45.0% for C.Conclusions Two new heterozygous polymorphism (G181A),(G15A) were found in SCN1B gene exon 3.Two new heterozygous polymorphism (T37C),(A81C) were found in SCN1B gene exon 6.These 4 polymorphism enriched single nucleotide polymorphism(SPN) database and provided candidate sites for the research of epilepsy susceptbility polymorphisms.

Generalized epilepsy with febrile seizures plus(GEFS+) is a new epilepsy syndrome proposed by International League Against Epilepsy.At present,the progress of genetic studies of GEFS+ focus on gene mapping based on family analysis,many researches indicate that GEFS+ is associated with voltaged-gated sodium channel(SCN) gene mutation.This paper intends to discuss the relationship beween GEFS+ and SCN1B,SCN2B,SCN1A,SCN2A genes,mutations in order to improve the cognition about GEFS+.

The purpose of risk assessment is to evaluate the permissible exposure level under specific risk factors.To extrapolate the human acceptable daily intake (ADI) and/or reference dose (RfD), the traditional method uses the no-observed-adverse-effect level ( NOAEL ) to quantify toxicity after being divided by uncertainty factor.There are many limitations with NOAEL method in safety evaluation,for it relies too much on experimental design.Benchmark dose ( BMD) approach is a more reliable method with many advantages.BMD approach and its analysis software, the advantages of BMD over NOAEL, the application and methodological perfection in risk assessment of long-team exposure toxicity are presented in this review.

Objective To investigate the expression of vascular endothelial factor C(VEGF-C) and E-cadherin in gastric cancer and explore the relationship between expression of VEGF-C and E-cadherin and the pathogenesis of gastric cancer.Methods Real-time quantitative reverse ranscriptase-polymerase chain rection was applied on 40 cases of gastric cancer and corresponding adjacent noncancerous tissues,in order to detect mRNA expression of VEGF-C and E-cadherin gene.VEGF-C and E-cadherin protein expression in gastric cancer and adjacent normal gastric mucosa were detected by immunohistochemistry.Statistical analysis was carried out to analyze the correlation among VEGF-C,E-cadherin and protein expression with various clinical parameters in these gastric cancer patients.Results The expression of VEGF-C protein in 40 cases of gastric cancer's cancer tissues was 0.461±0.012,significantly higher than that in the adjacent normal tissues(0.036+0.023;t=1.101,P＜0.05),but E-cadherin expression was significantly lower than that of the adjacent normal tissues (0.079±0.002 vs.0.321±0.005;t=1.844,P＜0.05).There was correlation between VEGF-C mRNA expression with histological grading,TNM staging,lymph node and distant metastasis (t=-1.621,-1.474,-2.378,-1.966,P＜0.05).There was correlation between E-cadherin mRNA expression with tumor size,histological grading,TNM stage,there was a significant difference (t=1.875,1.673,1.544,P＜0.05).VEGF-C and E-cadherin protein expression was negatively correlated(r=-0.688,P＜0.05).Conclusion Up-regulated of VEGF-C gene and decreased expression of E-cadherin may play an important role in the carcinogenesis of gastric cancer

Objective To explore the mutation of voltage-gated sodium channel ?1 subunit(SCN1B)gene in Chinese Han families with generalized epilepsy with febrile seizures plus(GEFS+).Methods Two families pedigrees were established and disease history,physical examination were collected in order to analyze the mode of inheritance.The mutation sites of reported SCN1B gene exon 3-(C46T,G47A,C156G)were detected by polymerase chain reaction sequence special primers(PCR-SSP)method after genomic DNA were extracted.Results There were 13 patients in the 2 families,all were Han people and 9 cases were living.The results showed the mode of inheritance basically corresponds with autosomal dominant inheritance complicated with incomplete penetrance,and leaded to different kinds of phenotype.The mutation sites of SCN1B gene exon 3 were detected by using PCR-SSP method,and heterozygote was not found,and point mutations were also not found in the 2 families.Conclusions GEFS+ is a complex disorder with genetic heterogeneity.There were no gene mutations of SCNIB in the 2 GEFS+ families,which might suggets the possibility of insufficient samples as the patients came from Henan province and the possibility of differences from races and regions of other countries.