Objective To investigate the inherited tendency of lateral discoid meniscus of the knee, and to evaluate the surgical efficacy for the disease in two consecutive generations. Methods There were 12 cases of lateral discoid meniscus, which were confirmed by arthroscopy, in 6 families. Arthroscopic total or partial meniscectomy or meniscoplasty were carried out in these cases. Results In concordance with the Watanabe’s classification, 9 cases were classified as “type Ⅰ” and 3 cases,“type Ⅱ”. Two cases underwent total meniscectomy, 3 cases received partial meniscectomy, and 7 cases, meniscoplasty. The results of surgery were assessed in accordance with the Ikeuchi criteria as follows: good in 3 cases, fair in 2 and poor in 1 in the first generation, while excellent in 5 and good in 1 in the second generation. Conclusions There may be a hereditary predisposition to discoid meniscus.

Objective To investigate the expression level of human telomerase RNA component (hTERC) and C-myc in cervical lesions.Methods Fluorescence in situ hybridization (FISH) was applied to detect hTERC and C-myc expression in 62 cases of cervical tissue including 35 cases of cervical intraepithelial neoplasia,8 cases of invasive cervical cancer,19 cases of inflammation as controls.Results The positive rates of hTERC on chromosome 3 in chronic cervicitis organizations,CIN Ⅰ,CIN Ⅱ-Ⅲ and cervical cancer were 5.3 ％ (1/19),16.7 ％(2/12),87.0 ％ (20/23),87.5 ％ (7/8) (x2 =36.299,x2 =40.237,P ＜0.01).The positive rates of C-myc in chronic cervical inflammation organization,CIN Ⅰ,CIN Ⅱ-Ⅲ and cervical cancer were 5.3 ％ (1/19),8.3 ％ (1/12),78.3 ％ (18/23),62.5 ％ (5/8) (x2 =30.200,x2 =34.224,P ＜0.01 ).The differences among groups were statistically significant.hTERC had a positively correlation with C-myc expression (r =0.514,P ＜ 0.01).Conclusion The expression of hTERC and C-myc on chromosome 3 is closely related to cervical cancer progression.

Objective To respectively analyze the results and complications of hip arthroplasty for failed intertrochanteric hip fractures treating with internal fixation.Methods From July 2004 to June 2006,32 patients(24 males and 8 females)were treated with hip arthroplasty after the failed internal fixation of intertrochanteric fractures.The mean age was 71 years(range,57-81 years)at the time of the hip arthroplasty.The average interval from fracture to arthroplasty was 40 months(range,5-70 months).Fifteen patients had been treated with sliding hip screw,10 with intramedullary nail,5 with plate and screws,2 with multiple screws.The failure modes were nonunion in 8 patients,implant cut out from the femoral head in 9,avascular necrosis of the femoral head in 7,and traumatic arthritis in 8 patients.Cemented stems were used in 12 hips,and uncemented stems in 20 hips.Standard prostheses were used in 25,long-stem prostheses in 7.Results Twenty-eight patients were followed up for a minimum of 4 years after the hip arthroplasty,with the mean period of 5 years(range,4-6 yeas).For these 28 patients,the average preoperative Harris Hip Score was 37(range,32-45),and 88(range,84-95)at the latest follow-up.The average acetabular inclination was 44°(range,42°-48°).No loosing was found in cotyloid components.Nine of 10 cemented femoral components had cementation rated as grade C,and 1 as grade A.Three had heterotopic bone six months postoperatively,and 2 were Brooker type Ⅱ,one was type Ⅲ.Conclusion Hip arthroplasty is an effective salvage procedure after the failed treatment of an intertrochanteric fracture in an older patient.

The present study aims to isolate neural stem cells from neonatal rat hippocampus and induce them to differentiate into cholinergic neurons. A multipotent cell line derived from the hippocampi of neonatal rats which had the ability to form clones was incubated in serum-free DMEM/F12 medium added with 20ng/ml basic fibroblast growth factor (bFGF) and B27. After differentiation of the neural stem cells, immunocytochemistry was used to detect nestin, the antigen of the cell clone, and β-tubulin (Tuj 1 ), glial fibrillary acidic protein (GFAP) and galactocerebroside (Galc), the markers specific for neurons, astrocytes and oligodendrocytes, respectively. Embryonic chick skeletal muscle extract was used to induce the differentiation of the neural stem cells into cholinergic neurons. The results showed that the cell line isolated from the hippocampi of neonatal rats expressed nestin and had the potential to form clones and differentiate into neurons, astrocytes and oligodendrocytes. Embryonic chick skeletal muscle extract can induce 9.6% of the isolated cell line to differentiate into cholinergic neurons compared with 3.9% in controls. These findings suggested that the cell line, which expressed nestin antigen, was a multipotent cell line capable of self-renewing, and was believed to contain stem cells of the CNS. These neural stem cells can be induced to differentiate into cholinergic neurons by using embryonic chick skeletal muscle extract.

Objective To explore the relationship between the typing of lower eyelid bag and surgical procedures and their clinical efficacy. Methods The eyelid bag was divided into three types and seven subtypes according to the clinical manifestation in 216 cases. Congenital structural abnoma-lities caused type Ⅰ of lower eyelid bag, long-term ophthalmokopia caused type Ⅱ of lower eyelid bag. Anaplasia of tissue and bone caused type Ⅲ of lower eyelid bag. Seven surgical methods were per-formed for lower eyelid blepharoplasty by various type. Results 159 of 216 cases were followed-up for 3 - 12 months, and most of the patients had excellent clinical results. Conclusion This simple typing is valuable for adopting surgical methods.

57??m).In addition,the positive product of BDNF was also observed in a few satellite cells.At 3 days after partial dorsal rhizotomy,the A value of BDNF and its mRNA in the medium and small sized neurons decreased apparently than that in normal group(P0 05).On the contrary,the A value of BDNF and its mRNA in the large sized neurons has not apparent changed at 3 days after partial dorsal rhizotomy but decreased apparently at 7 days after operation(P

Dopamine D₃ receptor (D₃R) is implicated in multiple psychotic symptoms. Increasing the D₃R selectivity over dopamine D₂ receptor (D₂R) would facilitate the antipsychotic treatments. Herein, novel carbazole and tetrahydro-carboline derivatives were reported as D₃R selective ligands. Through a structure-based virtual screen, ZLG-25 (D₃R K_i = 685 nmol/L; D₂R K_i > 10,000 nmol/L) was identified as a novel D₃R selective bitopic ligand with a carbazole scaffold. Scaffolds hopping led to the discovery of novel D₃R-selective analogs with tetrahydro-β-carboline or tetrahydro-γ-carboline core. Further functional studies showed that most derivatives acted as hD₃R-selective antagonists. Several lead compounds could dose-dependently inhibit the MK-801-induced hyperactivity. Additional investigation revealed that 23j and 36b could decrease the apomorphine-induced climbing without cataleptic reaction. Furthermore, 36b demonstrated unusual antidepressant-like activity in the forced swimming tests and the tail suspension tests, and alleviated the MK-801-induced disruption of novel object recognition in mice. Additionally, preliminary studies confirmed the favorable PK/PD profiles, no weight gain and limited serum prolactin levels in mice. These results revealed that 36b provided potential opportunities to new antipsychotic drugs with the multiple antipsychotic-like properties.