Thyroid hormone is an important hormone for regulating cell differentiation,growth and metabolism.Many studies have shown that thyroid hormone can induce turmor angiogenesis after binding with the integrin ανβ3 receptor at cell surface.Tetraiodothyroacetic acid is the analogue of thyroid hormone,and can inhibit tumor angiogenesis by inhibiting the binding of thyroid hormone with integrin ανβ3.Studying the role of thyroid hormone in promoting tumor angiogenesis may provide a new approach for molecular targeted therapy of tumor.

ObjectiveTo explore the correlation among knee hyperextension angle, lower limb joints kinematics parameters and the activation of main muscles of lower limb in stroke hemiplegic patients with knee hyperextension during walking. MethodsFrom August, 2020 to September, 2021, 24 stroke hemiplegic patients with knee hyperextension and 24 healthy subjects matched with sex, age, height and body mass with knee hyperextension were analyzed with three-dimensional gait analysis system and the wireless surface electromyography acquisition system, to record the range of motion of pelvis, hip, knee and ankle joints in sagittal plane, and the activation of bilateral gluteus maximus, biceps femoris, vastus medialis and gastrocnemius medialis. ResultsAs the maximum of knee hyperextension, range of motion of the joints in sagittal plane and the activation of the muscles were different between the patients and the healthy subjects during the single-support phase of walking (|t| > 3.080, P < 0.01), and the maximum of knee hyperextension correlated with the activation of gluteus maximus in the patients (r = -0.532, P < 0.01), and the range of motion of ankle plantar flexion in both the patients and the healthy subjects (r > 0.686, P < 0.001). ConclusionThe correction for knee hyperextension gait in stroke hemiplegic patients may not only need to pay attention to knee joint control, but also need further treatment of ankle control and hip muscle function.

Objective:To analyze the status quo and development of the Hope Houses for individuals with spinal cord injury (SCI) in Shanghai. Methods:In June, 2018, the organizers and managers of Hope Houses from 16 districts in Shanghai were investigated with the self-designed questionnaires, which covered the personal characteristics, knowledge of related policy, development of projects and obstacles, and rehabilitation recognition. The descriptive analysis and correlational analyses were conducted. Results:Totally, eleven organizers and 16 managers were investigated. The knowledge of related policy for organizers was not good enough. Eight Hope Houses in 16 districts in Shanghai were operated by social organizations. The average implementation rate of projects in Hope Houses was 60.6%, and the highest was rehabilitation knowledge education (96.3%). There was insufficient provision in legal services, job skills training, rehabilitation nursing guidance, job referral, medical referral and education referral, etc. The main related factors limiting the development of the Hope Houses were lacks of budgets, social consensus and professionals. The rehabilitation cognition of organizers and managers was generally good, but the cognition of rehabilitation principles and rehabilitation value needed to be strengthened. Conclusion:The Hope Houses for individuals with SCI in Shanghai work well, and the rehabilitation cognition of organizers and managers is satisfactory. It should be strenghened in resource input, comprehensive rehabilitation and standard of management, to expand the service timely.

Objective:To investigate the clinical characteristics and prognosis of acute myeloid leukemia (AML) patients with positive TLS-ERG fusion gene.Methods:The clinical data of 9 AML patients with positive TLS-ERG fusion gene in the First Hospital of Jilin University from June 2013 to August 2020 were retrospectively analyzed, and the relevant literature was reviewed.Results:Among 9 patients with positive TLS-ERG fusion gene, there were 5 males and 4 females, with a median age of 16 years old (6-40 years old). Five patients received chemotherapy alone, 3 patients received allogeneic hematopoietic stem cell transplantation (allo-HSCT), and 1 patient did not receive systematic treatment. Among 8 patients with systematic treatment, 1 patient had complete remission after the first induction chemotherapy and 5 patients had complete remission after induction therapy. The median overall survival time of 5 patients with chemotherapy alone was 1.5 months (1-11 months), of which 3 patients did not respond to the first course of treatment and died of infection, and 2 patients died after relapse. The median overall survival time of 3 patients with allo-HSCT was 16 months (13-17 months), of which 2 patients died after relapse and 1 patient had sustained molecular complete remission by the end of follow-up.Conclusions:AML with positive TLS-ERG fusion gene has low incidence rate and poor induction efficacy. Hematopoietic stem cell transplantation may partially improve the survival prognosis of patients, but it cannot overcome the adverse effect of positive TLS-ERG fusion gene on prognosis.

Objective:To determine the test-retest reliability of lumbar passive reposition accuracy for older people. Methods:A total of 58 healthy older people stood on an isokinetic dynamometer, and passively moved their trunk forward and backward to the target positions as accurately as possible. The targeted positions were set as flexion forward 15°, 30° and 60°, and flexion backward 15°. The absolute error (AE) was recorded. They were tested again a week latter. The intraclass correlation coefficient (ICC) and standard errors of measurement (SEM and SEM%) were calculated. Results:The ICC of AE was 0.699 to 0.833 for all the subjects, SEM was 1.18 to 3.26, and SEM% was 26.84% to 37.13%. For the men, the ICC was 0.462 to 0.818, SEM was 1.60 to 3.68, and SEM% was 36.37% to 48.78%. For the women, the ICC was 0.782 to 0.891, SEM was 1.48 to 2.71, and SEM% was 28.48% to 33.34%. Conclusions:Lumbar passive reposition accuracy is some reliable to assess the position sense for older people. However, there are too large errors for clinical measurement, which need further improvment.

Objective To construct a three-dimensional (3D) dynamic head-neck finite element model which accords with the anatomical structure, and study its dynamic responses under the external force. Methods By using the neck CT images of a Chinese adult male volunteer and obtaining the 3D cervical point cloud data, the finite element model of cervical spine was established using ICEM-CFD and HyperMesh software. This model, including vertebrae, intervertebral discs, facet joints, ligaments and cartilage tissues, and combining with the established and verified head finite element model, was assembled as human head-neck finite element model with detailed anatomical structures. Results The model was validated by data of head-neck axial impact experiments reported in previously published literature. The simulation results showed that the neck deformation, head acceleration, head force and injury positions were preferably consistent with the experimental data. Conclusions The established 3D dynamic finite element model can be used to study head-neck dynamic responses and damage mechanism in the fields of traffic safety and impact injuries.