[Summary] Lumbar disc herniation is rare in juveniles , which makes it more difficult to diagnose and treat .The prevalence , causes and risk factors , pathological changes , clinical characteristics , main treatment methods , and curative effects of lumbar disc herniation in juveniles were summarized in this review , for benefiting clinical diagnosis and treatment .

Objective:To develop an economical,simple and portable device for imitation of ship shock motion produced by non-contacting under water explosion.Methods:The device was developed based on aerodynamical principles and sensor detection technology,and was tested with animal experiments to verify its performance.The injuries caused by 4 grades of shock motions with different accelerations,duration and displacement were observed in 40 black rabbits(10 for each grade).Results:The device was safe and functionally stable,with a peak acceleration of 1 000 m/s~2,a shock duration of about 2 ms and a device displacement of 100 mm.The accelerations of 4 shock motion grades were significantly different and with good reproducibility.The damage to the rabbits were mainly haemorrhage of different extents in organs of pleuroperitoneal cavity,especially in the lungs,but no rupture of organs was found.The degree and involvement of damage had an increasing tendency with the increase of acceleration of shock motion.Conclusion:The device we developed can imitate the effects of ship shock motion.

Objective To study imageology anatomy concerned of sellar turica and explore its potential role on growth of pituitary adenomas. Methods According to classification of sinus sphenoidalis,103 normal imageology data of sellar turica region were analyzed, including 83 cases with entire saddle type sinus sphenoidalis and 20 cases anti-saddle type sinus sphenoidalis. Furthermore, the clinical data of 45 cases of pituitary adenomas with extension into sinus sphenoidalis were retrospectively studied. Results The relationship between sellar floor's shapes and sinus sphenoidals'types was that the larger the sinus sphenoidalis was, the deeper the floor was(98.8%). The relationship between sellar floor's shapes and the superior surface of hypophysis was that most of depressed sellar floors were companied with depressed superior surfaces of hypophysises(93.8%). The anteroposterior shapes of sellar turica in midsagittal can be divided into 4 types such as bag-type, kettle-type, tube-type, and sifter-type. 45 patients suffering from pituitary adenoms with extension into sinus sphenoidalis all had entire saddle type sinus sphenoidalis. Conclusions The imageology anatomy concerned of sellar turica could explain the phenomena of pituitary adenomas with extension toward sellar floor and sinus sphenoidalis. Referring to the literatures concerned, it indicated that the imageology anatomy was the key factor of affecting the growth of pituitary adenomas.

Objective To compare the clinical effects of hip replacement and internal lixation treatment for aged patients with fracture of femoral neck.Methods One hundred and twelve cases patients with fracture of femoral neck were choosed and divided into the control group (n =56) and observation group (n =56) according to the will of patients and family.The control group was treated by incision fixation while the observation group was given hip replacement therapy.All patients were followed up for 6 months after the operation time.Intraoperative blood loss,hospital stay,bed time,postoperative complications and Harris joint scores of the two groups were compared.Results The operation time and intraoperative blood loss of the observation group were significantly higher than those of the control group((98.6±23.8) min vs.(54.2± 16.4) min,(324.6 ±43.8) ml vs.(158.6±26.8) ml;t=4.468,5.624;P＜0.05);The bed time was much shorter than that of the control group((16.6±2.8) d vs.(68.6±5.8) d;t=8.248,P＜0.05).The case of pressure sores,lung infection and mode again of the observation group were significantly less than those of the control group(P＜0.05),while the Harris joint scores were significantly higher than the control group (89.7％ vs 58.9％,x2 =14.423,P ＜0.05).Conclusion Hip replacement can improve the joint function and enhance the quality of life for patients of fracture of femoral neck.

Huperzine A is a promising drug to treat Alzheimer's disease (AD). To date, its biosynthetic pathway is still unknown. Lysine decarboxylase (LDC) has been proposed to catalyze the first-step of the biosynthesis of huperzine A. To identify and characterize LDCs from Huperzia serrata, we isolated two LDC fragments (LDC1 and LDC2) from leaves of H. serrata by RT-PCR and then cloned them into pMD 19-T vector. Sequence analysis showed that LDC1 and LDC2 genes shared 95.3% identity and encoded the protein of 212 and 202 amino acid residues respectively. Thus, we ligated LDC genes into pET-32a(+) to obtain recombinant expressing vectors pET-32a(+)/LDC1 and pET-32a(+)/LDC2 respectively. We further introduced two expression vectors into Escherichia coli BL21(DE3) and cultured positive colonies of E. coli in liquid LB medium. After inducing for 4 hours with 260 μg/mL IPTG at 30 degrees C, soluble recombinant Trx-LDC1 and Trx-LDC2 were obtained and isolated for purification using a Ni-NTA affinity chromatography. We incubated purified recombinant proteins with L-lysine in the enzyme reaction buffer at 37 degrees C and then derived the reaction products using dansyl chloride. It was found that both Trx-LDC1 and Trx-LDC2 had decarboxylase activity, could convert L-lysine into cadaverine by way of thin layer chromatography assay. Further, bioinformatics analysis indicated that deduced LDC1 and LDC2 had different physicochemical properties, but similar secondary and three-dimensional structures.
Carboxy-Lyases ; biosynthesis ; genetics ; Cloning, Molecular ; Escherichia coli ; metabolism ; Genetic Vectors ; Huperzia ; enzymology ; genetics ; Lysine ; metabolism ; Plant Proteins ; biosynthesis ; genetics ; Recombinant Proteins ; biosynthesis ; genetics

Objective To evaluate efficacy and mechanism of Anluohuaxian pilule combined with interferon-γ in the treatment of schistosomal liver fibrosis. To preliminarily study on the relationship of pigment deposition in liver and schistosomal liver fibrosis. Methods Thirty Kunming mice were divided into the normal control group, the infection control group and the combination of Anluohuaxian pilule and Interferon-γ treated group. Schistosomal liver fibrosis model was established by infection with 40 Schistosoma japonicum cercariae. The treated group was treated by combination of Anluohuaxian pilule and Interferon-γ for 8 weeks. The changes of pigment deposition and hepatic egg granuloma in Schistosoma japonicum infected mice were observed. Expressions of collagen Ⅰ and Ⅲ were detected by immunohistochemistry. Transforming growth factor (TGF)-β1 was detected by fluorescent polymerase chain reaetion(PCR). Histopathology and computer image analysis were applied to evaluate the change in the liver tissues. Results The amount of pigment deposition in liver was related to the expression of TGF-β1 mRNA (correlation coefficient = 0. 8). Compared to the infection control group, combination of Anluohuaxian pilule and Interferon-γ can lessen hepatic fibrosis(P<0.05). The combination therapy can also make pigment deposition less and hepatic granuloma smaller than the infection control group(P<0. 05). Conclusions Pigment deposition in liver is related to the expression of TGF-β 1. Combination of Anluohuaxian pilule and Interferon-γ can lessen hepatic fibrosis in mice infected with Schistosoma japonicum. It's one mechanism to of the combination therapy down-regulate the expression of collagen Ⅰ, Ⅲ and TGF-β 1.

Objective: To explore the turnover and treament of postoperative remainder of giant nonfunctioning pituitary adenoma with suprasellar extension(SSE). Methods: The clinical data of 68 cases suffering from giant nonfunctioning pituitary adenoma with suprasellar extension(SSE)admitted into our department were retrospectively analyzed.These patients underwent primary transsphenoidal surgery. Results: Twenty cases had SSE adenomas totally removed(20.6%).In other 48 cases(79.34%)，SSE residues were shown in MRI recheck at one day after surgery.After 3 months，the 3rd MRI scanning was performed only to find that tumor residues descended to sellar floor in 21 cases,into intrasella in 8 cases，and down to the level of stalk hypophysial and the entrance to the sella in 3 cases.All of Patients with residual tumors received retranssphenoidal resection(the total removal rate of desending SSE residues was 96.9%).There were 2 cases with adenoma residues with slight descending.Obvious SSE adenomas were treated with transtranial approach.The twelve cases with small SSE residues were consecutively observed and two of them received gamma knife treatment because of unobvious postoperative visual improvement.The surgical mortality was 0%.There was no death during follow up in all of these patients.There were no cases with rhinorrhea.meningitis or visual deterioration.Two patients had supradiaphragmatic bleeding detected by routine postoperative CT. Conclusion: Staged surgery with two or multiple transsphenoidal resections is an appropriate treatment for giant nonfunctioning pituitary adenoma with supresellar extension(SSE)，with few complications.Futher study is warranted to investigate the growth pattern of pituitary adenoma.

Objective To summarize the effect of laparoscopic repair of acute gastric perforation. Methods Patients with acute gastric perforation underwent laparoscopic repair and abdominal drainage under intravenous- inhalation general anesthesia after a histological biopsy. Results Forty-six patients with acute gastric perforation were successfully operated.Of which, 6 patients with pylonic perforation, 37 patients with perforation in the front wall of gastric antrum, 3 patients with perforation in stomach body. Thirty-three cases were received frozen section biopsy, only 1 case showed a cancer in the lesser curve of stomach body. There was no complications occurred and no operative mortality in this series. Of the 45 benign ulcers patients,31 patients were discharged 7 days after the operation, 14 patients were discharged 2 weeks after medication treatment.Three months after operation the symptoms of the 45 patients disappeared totally,they had normal diet,and got body weight 1-3kg. Pathological examination showed that no malignant cell was found in 45 benign ulcer patients. The cancer patient was discharged 9 days after operation and refusing to further treatment. Conclusions Laparoscopic repair is a safe mini-invasive method, and it isn′t breach the surgical principles,it allows the patients recover quickly and with less complications. The intraoperative biopsy can prevent misdiagnosis of cancer. It is an effective treatment for acute gastric perforation and worthy to be widely used.

Objective To investigate use of magnetic resonance diffusion tensor imaging (MR-DTI) for quantitatively evaluating the efficacy of Mailuoning Injection on non-compressive lumbar radiculitis.Methods Nine Bama mini pigs were selected and divided into group A,B and C,3 cases in each group.The non-compressive lumbar radiculitis model was established under CT-guiding.The corresponding therapeutic drugs (group A:10 mL Mailuoning;group B:10 mL normal saline;group C:10 mL diminishing inflammation fluid) were given by epidural injection on 14 d after constructing model.MR-DTI was performed before model construction,14 d after model construction and before treatment.One experimental pig in each group was taken on 3,7,14 d after treatment,performed MR-DTI and killed for taking the nerve root sample to conduct the immunohistochemical detection.The fractional anisotropy (FA) values of nerve root in MR-DTI imaging were measured.The FA values and immunohistochemical detection results were statistically analyzed.Results MR-DTI:the FA values after model construction in each group was decreased (P<0.05);the FA values on 14 d after treatment in the group A was increased,which showed statistically significant difference compared with before treatment (P<0.05);the FA values after 3,7 d treatment in the group A had no obvious increase,the difference between the group A and B was not statistically significant (P>0.05),but the FA values increase in the group C was earlier and more rapid than other two groups (P<0.05);the FA values after 14 d treatment in the group A was risen again,the FA values of bilateral nerve roots had no statistical difference between the group A with the group B and C (P>0.05),while the FA values had statistical difference between the group B and C (P<0.05).The immunohistochemical results:TNF-α integral absorbency value(IA value) on 7 d after treatment in the group A began to decline;the TNF-α IA value on 14 d after treatment in the group A and C was significantly decreased compared to group B,the difference was statistically significant (P<0.05).Conclusion Mailuoning Injection has a certain effect on non-compressive lumbar radiculitis,which can be evaluated by using DTI.

).The complication rate in RIVVH was lower than that in the control group (P<0.05).Conclusions Early RIVVH was effective in the treatment of SAP,and may be an option as adjuvant treatment measure.