BACKGROUND:Cilium is an antenna-like organele that plays a vital role in al organs generation and maintenance.Ciliopathiesrefer tomultisystem diseasescaused bydisordersofthecilia structure and function. OBJECTIVE:To introduce current understanding of the structure and function of the cilium,with afocus on the study progress ofciliopathies. METHODS:PubMed databasewas searched by computerusing the keywords of“primary cilium, motion cilium,ciliopathy”.Totally 371 relevantarticlespublished from 1959 to 2015 were retrieved. After excluding repetitive and irrelevant articles,we enrolled32 English literaturesregardingcilia structure, functionand ciliopathiesin accordance with the inclusion criteria. RESULTS AND CONCLUSION:Ciliopathiesalmostinvolve every system of the human body, such asthe brain, eyes, liver, kidney, bone and reproductive system.Most ciliopathies are related to human developmental or degenerative diseases, which characterized by wide-ranging clinical and genetic heterogeneity,such asprimary ciliary dyskinesia,ploycystic kidney disease, infertility, blindness and tumor. In view ofthemedical importanceof the cilium, scholars have devoted tostudyingthe underlying celular mechanisms.Thesein turnhave revealed thatciliopathiesare not only caused bydefectiveassemblyof the cilium,but also by impaired ciliarysignaling.

[Objective]To explore the change and its significance of the expression of vascular endothelial growth factor(VEGF) messenger RNA and bone morphogenic protein-2(BMP-2) of the local femoral head in the nontraumatic osteonecrosis of femoral head(NONFH).[Method]Sixteen samples of femoral heads of NONFH were collected as the experimental group and fresh 10 samples of femoral heads of femoral neck fracture as control group,overall examples were collected from total articular replacement arthroplasty.The samples were splitted in coronal plane and get one bone block from necrosis area and another one from healthy area,make them into microtome section after the process of immobility and decalcification.Their pathological change was observed by using optical microscope and electron microscope and detect the expression of BMP-2 and VEGFmRNA in femoral head through making use of immunohistochemistry and in-situ hybridization technique.[Result]The organization structure of experimental group was disorganized,cracked and the bone trabecula was rarefactive and non-intact and there was a great number of empty lacuna in bone trabecula.While there was the reverse situation in the control group.The intensity and area of positive expression of BMP-2 and VEGFmRNA in femoral head of the experimental group were lower than that of control group obviously.The result showed statistical significance(P

A broken metal handle accompanied by femoral trunk fracture, which would shorten service life of handles. Therefore, it is necessary to judge whether the notch is the main reason for handle broken. Some literatures thought that the pores of sintered porous coated anatomic (PCA) porous layer produce the notch on the handle surface and the notches lead to the handle broken being incorrect. The Apex of the pore is taken for the bottom of the notch, expanding into a crack, and it should also not grow to the base-alloy, accordingly, the above conclusion is wrong. Some reports pointed out the notch, apex of the pore, will expand into the crack, but it is not associated with the broken handle. Under the sintering temperature, the grain boundary apertures be generated on the base metal surface, the aperture is expanded into the crack, which leads to handle broken in the forced area. However, neither theoretical basis, nor a case of corroboration, can prove exist of notch. Actually, the broken handle is caused by the sintering technology. The high temperature of sintering joining results in grain boundary aperture, when encounter the largest forced area and expand into crack, it will break the handle.

INTRODUCTION: General joining techniques are at low level, which produces some potential problems in porous layer of porous coated anatomic (PCA).LIMITATIONS: The problems in general joining techniques are caused by limitations of each technique, which could not be solved using advanced measures.APPLICATION: The activated diffusion brazing technology is an effective way. Its many advanced processes can solve those potential problems.CONCLUSION: The stress-shielding problem caused by PCA porous layer can be solved by using small metal balls in the same diameter in combination with the advanced activated diffusion brazing technology. Moreover, the high performance brazing metals by activated diffusion brazing technology is harmless for humans.

OBJECTIVE: Sintering of porous coated anatomic porous layer bonding technology remains controversial because of poor understanding to its essence.ESSENCE: Sintering is a technology that the bonding temperature exceeds 5 ℃ or higher than the base-alloy solids temperature of 1 230 ℃, resulting in base-alloy produce a series of serious problems, such as grain boundary racks, handle broken and so on.HAZARDS: In sintering temperature, the low melting point eutectlc phase and the brittle metal compounds flow out of the grain boundary to bond the small metal balls and the handle, which greatly reduces the fatigue strength. The grain boundary cracks formed and expanded ultimately leading to handle broken.DISCUSSION: The cause of a handle broken is neither notch nor metallurgical defects but sintering process, because high sintering temperature results in grain-boundary lacunas.CONCLUSION: Sintering is not suitable for connecting the force components. High sintering temperature produces grain-boundary lacunas which can expand into cracks and ultimately result in handle broken under some condition.

BACKGROUND: Autophagy of osteocytes has been found to be implicated in the pathogenesis of steroid-induced necrosis of the femoral head and closely related to apoptosis.OBJECTIVE: To summarize the research progress of autophagy in the pathogenesis of steroid-induced necrosis of the femoral head by studying the interaction between cell autophagy and cell apoptosis as well as osteocytes.METHODS: A computer-based online retrieval of PubMed, Embase and CNKI databases was performed for relevant literatures published from October 1996 to October 2016 with the keywords of steroid, necrosis of the femoral head, cell apoptosis, cell autophagy, osteocyte in Chinese and English, respectively. The articles concerning steroid-induced necrosis of femoral head and cell autophagy were collected, and the redundant and old researches or Meta analysis were removed.RESULTS AND CONCLUSION: Mammalian target of rapamycin, Beclin-1, microtubule-associated protein 1 light chain 3, bone morphogenetic proteins, fork box protein and transcription gene family and transcription factor 4 are closely related to autophagy. The interaction between autophagy and osteocytes is correlated with steroid dose: the autophagy shows protective factor under the low dose corticosteroids; however, with the increase of the dosage, a large number of apoptotic cells, and the phenomenon of bone loss can been observed. Furthermore, the relationship of cell autophagy with apoptosis and bone mass maintenance is still controversial, which needs to be explored in depth via a series of rational experiments.

Objective: Osteoarthritic lesions of Temporomandibular joint(TMJ) were assessed by dental cone beam computed tomography(CBCT),and compared with conventional radiographic technology. Methods: The study was conducted retrospectively on 511 joints of 350 patients, who had undergone dental CBCT ,panoramic radiography,transcranial projection and transpharygeal projection of TMJ . The results were compared and the accuracy with CBCT was assessed. The types of osseous condylar abnormalities were observed.Results: (1) The occurrence of osteoarthritis in male and female were 59.04% and 69.66%, respectively, with no significant difference. (2) Compared with CBCT, panoramic radiography,transpharygeal projection examination showed no significant difference, with the accuracy being 90.64% and 94.10%,respectively;However, transcranial projection indicated a significant difference in comparison with CBCT and the accuracy was 86.97%. (3) A higher occurrence of osteoarthritic lesions of the condyle was sclerosis (39.86%). Bony proliferation or osteophyte (28.18%) and ill-defined cortical bone (18.90%) were followed. Conclusion: Cone beam CT, which reproduces multiple images including axial, coronal and sagittal planes of the joint, provides a complete radiographic investigation of the bony components of the TMJ. It is one of the best choices of imaging diagnosis of TMJ osteoarthritis. Panoramic radiography and transpharygeal projection examination are also good choices for showing osseous condylar abnormalities in the clinic, but transcranial projection examination is inferior.

0.05).Conclusion:All the results of the five measurement methods showed that the condyle was located in the center of the fossa with a variation in the healthy adults in intercuspal position.The CBCT image of the sagittal middle layer of the joint could show the joint space accurately and has an important value in the research related to the changes of TMJ space.

It analyzed the definition, mechanism, characteristics of Mirror Visual Feedback and summarized the application of mirror visual feedback in recovering upper limb function after stroke patients at home and abroad, so as to provide evidences for the further research in China.

The rapid mutation and widely spread of duck hepatitis A virus (DHAV) lead to the vast economic loss of the duck industry. To prepare and evaluate bivalent inactivated vaccine laboratory products of DHAV, 6 strains were screened from 201 DHAV-1 strains and 38 DHAV-3 strains by using serotype epidemiological analysis in most of the duck factory. Vaccine candidate strains were selected by ELD50 and LD50 tests in the 6 strains. Continuously passaged, the 5th passaged duck embryos bodies grinding fluid was selected as vaccine virus seeds. The virus seeds were treated with formaldehyde and water in oil in water (W/O/W) emulsions, making into three batches of two bivalent inactivated vaccine laboratory products. The safety test, antibody neutralization test, challenged protection and cross immune protection experiment suggested that the vaccines possessed good safety, and neutralizing antibodies were detected at 7th day and the challenged protection rate reached 90% to 100% at the 14th and 21st day. Moreover, immune duration of ducklings lasted more than five weeks. However, cross-immunity protection experiments with DHAV-SH and DHAV-FS only had 20%-30%. The two bivalent inactivated vaccine laboratory products of duck viral hepatitis were effective and reliable, providing a new method as well as a new product for DHAV prevention and control.
Animals ; Antibodies, Neutralizing ; blood ; Ducks ; virology ; Hepatitis Virus, Duck ; Hepatitis, Viral, Animal ; prevention & control ; virology ; Neutralization Tests ; Picornaviridae Infections ; prevention & control ; veterinary ; Poultry Diseases ; prevention & control ; virology ; Vaccines, Inactivated ; immunology ; Viral Hepatitis Vaccines ; immunology