[Objective]To discuss the clinical effect of the anterior approach for the treatment of thoracolumbar burst fractures by decompression and bone graft.[Method]A total of 34 patients underwent anterior approach for the treatment of thoracolumbar burst fractures were retrospectively analyzed from September 2003 to September 2005.According to the Denis classification system,there were 6 type A,16 type B,6 type C,4 type D,and 2 type E.Preoperative and postoperative neurologic changes,spinal canal decompression,segmental angulation,and arthrodesis rate were evaluated.[Result]The average preoperative canal compressopm decreased from 66.5% to 2.0%.Mean preoperative segmental kyphosis improved from 22.10? to 2.30?.There was neurologic deterioration.Twenty-six(86.7%) of 30 patients with neurologic deficits had an improvement by at least one modified Frankel grade.All patients went on to apparently stable arthrodesis.[Conclusion]Types of anterior spinal instrumentation and reconstruction techniques allow direct anterior decompression of neural elements,improvement in segmental angulation,and acceptable rates of arthrodesis without the need for supplemental posterior instrumentation.

[Objective]To study the expression of Cathepsin B,Caspase-3 and to explore the significance of their expression initially after acute spinal cord injury in rats.[Method]The spinal cord injury of the healthy adult SD rats (78) was induced with Nystrom’s way by the moderate compression at the level of T8 and T9 spinal cord. HE methods were used to detect the pathologic change of spinal cord. The expression of Cathepsin B and Caspase-3 were detected by immunohistochemical study. Besides,using the terminal deoxynucleotidyl transferase mediated DUTP nick and labeling (TUNEL) methods to detect the level of the apoptosis of neural cells.[Result]There were few expressions of Cathepsin B, Caspase-3 and TUNEL positive cells in normal and sham operated spinal cord as detected by immunohistochemical study. The number of positive cells of Cathepsin B increased clearly at 3 days,reached a peak at 5 days,and was constant at 7 days after injury. While the expression of Caspase-3 increased obviously at 8 hours,got to a peak at 3 days,and was lowest at 7 days. And the number of positive cells of TUNEL also increased obviously at 8 hours,got to a peak at 3 days,and was lowest at 7 days. There were significance differences of morphological and position of positive cells between Cathepsin B and Caspase-3 or Tunel. [Conclusion]Caspase-3 protein expressions are enhanced in combination with neuronal apoptosis,while Cathepsin B may involve in the secondary injury by inflammatory cells after acute spinal cord injury.

Objective To express human chemokine-like factor 1 (CKLF1) in Drosophila S2 cells and study its function. Methods The pMT/V5-His-CKLF1 expression plasmid was constructed and transfected into Drosophila S2 cells. The positive clones were selected through PCR and RT-PCR. The culture medium was analyzed by Western blot with anti-CKLF1 polyclonal antibody. Chemotaxis and MTT assays on human peripheral blood and C2C12 cells, respectively, were then carried out with the medium. Results CKLF1 was transcribed efficiently in S2 cells. The expressed CKLF1 protein could be detected in the culture supernatant by Western blot, which showed weak chemotactic activity on both human peripheral blood neutrophils and lymphocytes as well as enhancing effect on the proliferation of C2C12 cells. Conclusion CKLF1 was expressed successfully in Drosophila S2 cells and secreted into the culture medium. The recombinant CKLF1 expressed in Drosophila cells can chemoattract leucocytes and promote the proliferation of C2C12 cells.

Objective To investigate the expression and significance of Th9, Th17 and CD4+CD25+Foxp3+regulatory T (Treg) cells as well as the related cytokines (IL-9, IL-17, TGF-β) in peripheral blood of patients with adult primary immune thrombocytopenia ( ITP) . Methods Peripheral blood samples were collected from 47 patients with ITP and 39 age-and sex-matched healthy subjects. The percentages of Th9, Th17 and CD4+CD25+Foxp3+Treg cells in peripheral blood samples were detected with flow cytometry. The levels of IL-9, IL-17 and TGF-βin serum samples were detected by enzyme linked immunosorbent assay ( ELISA) . Results Compared with healthy subjects, the percentages of Th9 and Thl7 cells and the concen-trations of IL-9 and IL-17 in patients with ITP were significantly increased [(1. 27±0. 31)% vs (0. 71± 0. 26)%, P<0. 05;(2. 01±0. 42)% vs (0. 97±0. 32)%, P<0. 05. (26. 52±7. 48) ng/L vs (16. 16± 5. 27) ng/L, P<0. 05;(10. 97±3. 94) ng/L vs (7. 14±2. 73) ng/L, P<0. 05]. The percentages of CD4+CD25+Foxp3+ Treg cells and the concentrations of TGF-β in patients with ITP were lower than those in healthy subjects [(4. 69±0. 85)% vs (7. 16±1. 92)%, P<0. 05. (3. 76±1. 28) μg/L vs (6. 41±1. 83)μg/L, P<0. 05]. Moreover, the blood platelet counts in patients with ITP were negatively correlated with the percentages of Th9 and Th17 cells and the concentrations of IL-9 and IL-17 (γs=-0. 349, P=0. 037;γs=-0. 392, P=0. 031;γs=-0. 436, P=0. 014;γs=-0. 401, P=0. 027), but were positively correlated with the percentages of CD4+CD25+Foxp3+ Treg cells and the concentrations of TGF-β (γs=0. 411, P=0. 024;γs=0. 407, P=0. 026). Conclusion The imbalanced distribution of Th9, Th17 and Treg cells and the abnormal expression of related cytokines (IL-9, IL-17 and TGF-β) in patients with ITP might be the possible immunological pathogenesis of ITP.

Objective:Nuclear apoptosis-inducing factor 1(NAIF1) is a novel apoptosis gene cloned in laboratory. To analyze the binding proteins of NAIF1 by pulldown method, the fusion expression vector of truncated human nuclear apoptosis-inducing factor 1〔NAIF1(73-327)〕 was constructed, were expressed and purified the recombinant GST-NAIF1(73-327) fusion protein in E.coli.Methods:The cDNA encoding human NAIF1(73-327) was amplified by PCR and cloned into pGEX-KG vector. The GST-NAIF1(73-327) fusion protein was expressed in E.coli and purified by affinity chromatography. The purified protein was detected by SDS-PAGE, Western blot and ESI-Q-TOF-MS/MS.Results:A prokaryotic expression vector of GST-NAIF1(73-327) was constructed and the GST-NAIF1(73-327) fusion protein was expressed in E.coli at high level. SDS-PAGE analyses indicated that the purified protein was about 53 kD. Western blot and MS/MS analyses verified the recombinant fusion protein.Conclusion:An efficient method for obtaining recombinant GST-NAIF1(73-327) fusion protein had been established and it could be used for further studies on the structure and function of NAIF1.

ObjectiveTo observe the effect of cerebellar fastigial nucleus treated by electrical stimulation on patients with acute cerebral infarction.Methods140 cerebral infarction patients with hemiplegia were randomly divided into the experimental group and control group with 70 cases in each group.The experimental group was treated with routine drugs and electrical stimulating on cerebellar fastigial nucleus;the control group was only treated with routine drugs.The changes of motor function of limbs and activities of daily living of two groups were evaluated after treatment.ResultsAfter 21 days treatment,the score of Fugl-Meyer assessment of the experimental group was 39.2±(7.7) and that of the control group was 26.3±8.1.There was a significant difference between two groups(t=4.22,P<0.01).The score of Barther index of the experimental group was 43.8±8.4 and that of the control group was 29.7±7.5.There was also a significant difference between two groups(t=4.97,P<0.01).ConclusionThe electrical stimulation on cerebellar fastigial nucleus is a new effective way to treat acute cerebral infarction.

Objective To compare the curative effect of conservative treatment and full thread hollow screw in the treatment of Ekrol 2 fracture of the fifth metatarsal bone.Methods From April 2013 to May 2015,42 patients with avulsion fractures of the fifth metatarsal basement of type 2 fractures in Ekrol division were treated in our hospital.23 patients underwent full thread hollow screw surgery (surgical treatment group),and there were 12 males and 11 females,with an average age of 43.4±9.2 years,and the fracture displacement length was 2.3±0.2 mm.19 patients treated with plaster fixation (conservative group),including 10 males and 9 females,with an average age of 45.7±8.9 years and fracture displacement length was 2.1±0.2 mm.During follow-up,X -ray examination was performed to evaluate the time of fracture healing and forefoot score of American Orthopaedic Foot and Ankle Society (AOFAS),visual analogue score (VAS) and quality of life questionnaire (SF-36) were compared between the two groups.Results All 42 patients were followed up for 12 to 24 months with an average of 18 months.At the latest follow-up,the fracture healing time of the surgical group was 9.3±2.0 weeks,with AOFAS score of 84.1±3.9,VAS score of 0.1±0.2,and the SF-36 score of 95.1±2.9 points,and the shortening of length after treatment was 2.1±2.5 mm;the average healing time of the conservative treatment group was 12.2±2.1 weeks,with the average AOFAS score of 84.2±4.2 points,and the average VAS score of 0.2±0.2 points,the average SF-36 score of 94.1 ±5.2 points,and the shortening of length after treatment was 0.4±2.5 mm.The results of each short-term score and the shortening of the length of the fracture after treatment was statistically significant.The results of the mid-and long-term scores showed no significant difference between the two groups;the fractures of both groups reached bone healing.3 cases of sural nerve stimulation occurred in the operation group,while 1 case occurred in the conservative group.Abnormal healing occurred in 2 cases of conservative treatment,and the fractures of the surgical treatment group were anatomic reduced.Conclusion Usingfull thread hollow screwfor the treatment of Ekrol 2 fracture of the fifth metatarsal bone is better than the conservative treatment in the short term,but there is no significant difference in the long-term effect.

Objective:To analyze the incidence of human papillomavirus (HPV) infection in 1 902 patients and to evaluate the efficacy of drug treatment in 266 patients, aiming to provide reference for the treatment of HPV infection.Methods:The subtypes of HPV isolated from 1 902 patients aged 15-86 years visiting the venereology outpatient clinic of Tianjin Medical University General Hospital from October 2019 to May 2021 were identified by polymerase chain reaction-reverse dot blot hybridization. Drug treatment efficacy in 266 patients of them was retrospectively analyzed.Results:The overall incidence of HPV infection in the 1 902 patients was as high as 53.84% (1 024/1 902). It was 52.60% (689/1 310) in males and 56.59% (335/592) in females. There was no significant difference in the incidence between males and females ( P>0.05). The most common HPV genotype in males and females was HPV6 [15.27% (200/1 310) and 21.96% (130/592)], followed by HPV16 [10.61% (139/1 310) and 9.46% (56/592)], HPV11 [9.31% (122/1 310) and 8.61% (51/592)], HPV52 [6.79% (89/1 310) and 8.95% (53/592)] and HPV43 [5.64% (87/1 310) and 8.45% (50/592)]. The majority of HPV-positive patients were aged between 20 and 39 years. There were 476 cases (25.03%, 476/1 902) of single-type infection and 548 cases (28.81%, 548/1 902) of multiple infection. The incidence of multiple infection was higher than that of single-type infection ( P<0.05). The incidence of multiple infection in females was higher than that in males ( P<0.05). Among the 266 patients, 106 were treated with Paiteling, a traditional Chinese medicine (TCM) preparation, and 68 of them tested negative (64.15%) after treatment. Fifty-eight patients were treated with recombinant human interferon α2b and 22 of them (37.93%) tested negative after treatment. Twenty out of the 56 subjects treated with imiquimod tested negative after treatment. Eight out of the 46 patients without treatment also turned negative. Conclusions:The incidence of HPV infection in the 1 902 patients visiting the venereology outpatient clinic was very high, and most of them were young adults. Multiple infection was more common than single-type infection. Topical application of drugs such as Paiteling, recombinant human interferon α2b and imiquimod was effective in treating HPV infection.

OBJECTIVE: To analyze the pathogenic variant of preaxial polydactyly in a Chinese Han pedigree and identify the cause of polydactyly. METHODS: The peripheral blood DNA of the proband and her parents was extracted. The polydactyly-related genes were detected by trio whole exome sequencing, and the suspected pathogenic gene was screened out. Sanger sequencing was applied to other members of the pedigree. RESULTS: The results of gene sequencing showed that the LMBR1 gene had a heterozygous variant of c.423+4909(IVS5)C>T in 6 patients of the pedigree. The same variant was not detected in family members with normal phenotype. Based on the ACMG guidelines, c.423+4909(IVS5)C>T of the LMBR1 gene was predicted to be pathogenic (PM1+PM2+PP1-S(PS)+PP4+PP5). CONCLUSION The heterozygous C>T variant at position 4909 of intron 5 of the LMBR1 gene probably underlies the disease in this pedigree.
China ; Female ; Humans ; Mutation ; Pedigree ; Polydactyly/genetics* ; Thumb ; Whole Exome Sequencing

OBJECTIVE: To explore the genetic basis for a Chinese patient with amyotrophic lateral sclerosis (ALS). METHODS: Peripheral blood samples were collected from the patient and his parents for the extraction of genomic DNA. Genetic variant was identified by whole exome sequencing. Candidate variant was verified by Sanger sequencing of his parents and healthy controls. RESULTS: The patient was found to harbor a heterozygous c.420C>G (p.Asn140Lys) variant of the SOD1 gene. The same variant was not detected in his parents and 100 healthy controls. The variant has not been included in HGMD, dbSNP and other databases. CONCLUSION The c.420C>G variant of the SOD1 gene may underlie the ALS in this patient. Above finding has enriched the spectrum of SOD1 gene variants.
Amyotrophic Lateral Sclerosis/genetics* ; China ; Heterozygote ; Humans ; Superoxide Dismutase-1/genetics* ; Whole Exome Sequencing