Adult ; Disease Susceptibility ; complications ; Female ; Hearing Loss, Noise-Induced ; complications ; Humans ; Hypertension ; etiology ; Linear Models ; Logistic Models ; Male ; Middle Aged ; Multivariate Analysis ; Noise, Occupational ; adverse effects ; Occupational Exposure ; adverse effects

Female ; Granulosa Cell Tumor ; Humans ; Ovarian Neoplasms ; Thyroid Neoplasms

BACKGROUND: The pathological changes of osteoarthritis are similar to that of kaschin-beck disease, but the cause of the latter is still unclear,damage is more serious. From the comparison of pathology changes between them, we hope to find out an effective therapeutic method with the assistance of arthroscope basing on the experiences in osteoarthritis.OBJECTIVE: To make comparison of the histomorphological changes between osteoarthritis and kaschin-beck disease with knee arthroscope,which give clues to the diagnosis and selection of operative technique for kaschin-bock disease under arthroscope.DESIGN: Case control study.SETTING: Department of Orthopaedics, Shaanxi People's Hospital.PARTICIPANTS: Thirty-five patients who needed arthroscope surgery due to severer knee osteoarthritis were randomly selected from Department of Orthopaedics, Shaanxi People's Hospital between April 1998 and September 2000; Meanwhile 31 patients with knee joint functional obstacle caused by kaschin-beck disease (epidemic disease area) were randomly selected from Luochuan Hospital of Shaanxi Province in November 2001.METHODS: Japanese made OLYMPUS series color television arthroscope and surgery system were used to carry out knee joint operations in all participants. During the operation, video recording, postoperative editing, photographs, comparison and analysis were conducted, in order to find out the pathological changes of the two groups in knee joint synovium, patella, femur, tibia and meniscus with the assistance of arthroscope.RESULTS: Totally 66 patients were enrolled in this study and all endamage in Kaschin-beck disease and osteoarthritis: Injuries were graded into grade 0, 1, 2 and 3, there were 0,3,5,23 cases and 0,3,16,16cases correspondingly in kaschin-beck disease group and osteoarthritis cartilage damage was presented by big piece of cartilage peeled off, part of them came off leading to bone exposure, the exposed bone surface is uneven; while cartilage damage in osteoarthritis was presented by the wear of cartilage, moreover cartilage island was found remained in the exposed bone with the surface covered with fiber strips and the exposed observed in 24 patients with Kaschin-beck disease, 5 cases with coarse stress point and 19 cases with burr-like damage, amongst which there were 9 cases displayed both medial and lateral meniscus damages; in osteoarthritis group there were 16 cases showed meniscus damages including edge wears in11 cases and breakage in 5 cases.CONCLUSION: Cartilage damage in knee articular was obviously severer in Kaschin-beck disease than in osteoarthritis, although kaschin-beck disease is no matter resulting in serious knee joint damage, but its pathology changes are different from osteoarthritis, we should pay more attention to the peculiarity of big piece of cartilage peeling off during operations.

Adult ; Endocarditis, Bacterial ; complications ; diagnosis ; Humans ; Male ; Myocardial Infarction ; diagnosis ; etiology

OBJECTIVETo inspect the quality of commercially available Chaihu (Bupluri Radix, a common traditional Chinese herbal drug) in Guangzhou by determining the content of saikosaponin A (SSa) using enzyme-linked immunosorbent assay (ELISA).

METHODSA competitive ELISA system using mouse anti-saikosaponin A monoclonal antibody was established for determining SSa content. Commercial samples of Chaihu were obtained from 10 drug stores in Guangzhou, and SSa contents in the methanol extracts of these samples were determined using the ELISA system.

RESULTSThe detection range of this competitive assay was 0.16-2.5 µg/ml for determining SSa contents. In the 10 commercial Chaihu samples, SSa contents in the methanol extract determined by this method ranged from 0.32 µg/mg to 6.87 µg/mg, and 3 samples showed a SSa content lower than the minimum requirement documented in the Chinese Pharmacopeia.

CONCLUSIONThis competitive ELISA is sensitive, rapid, economic and environment-friendly for SSa determination, especially suitable for batch determination. The results of SSa detection for the commercial Chaihu samples demonstrate an uneven quality of Chaihu in Guangzhou market, suggesting the necessity of more rigorous quality control measures for this drug.

Antibodies, Monoclonal ; Bupleurum ; chemistry ; Drugs, Chinese Herbal ; analysis ; Enzyme-Linked Immunosorbent Assay ; methods ; Oleanolic Acid ; analogs & derivatives ; analysis ; Quality Control ; Saponins ; analysis

Objective:To investigate the characteristics and significance of insulin-like growth factor 1(IGF- 1) and insulin-like growth factor binding protein 2 (IGFBP2) expressions in ankle cartilage of patients with Kashin-Beck disease (KBD).Methods:In this case-control study, 10 KBD patients who were hospitalized in the Department of Orthopedics of Shaanxi Provincial People's Hospital from January 2010 to December 2016 were selected as KBD group, and 10 patients with ankle fracture caused by trauma but without talus injury during the same period were selected as control group, the cartilage tissues of the two groups were collected. IGF-1, IGFBP2 positive cells, the mRNA and protein expressions of IGF-1, IGFBP2 in the cartilage tissues were detected by immunohistochemistry, real-time fluorescent quantitative PCR and Western blotting, respectively. According to the expressions of IGF-1 and IGFBP2 in ankle cartilage of KBD patients, a patient with amputation caused by trauma was selected in Shaanxi Provincial People's Hospital, and ankle joint cartilage was taken to prepare chondrocytes for in vitro cell verification experiments. The chondrocyte were divided into control group (0 ng/ml T-2 toxin), T-2 treatment group (20 ng/ml T-2 toxin) and T-2+ IGFBP2 silenced group (20 ng/ml T-2 toxin+ 50 nmol/L IGFBP2 siRNA), the MTT method and dimethyl methylene blue staining were used to detect the activity of chondrocyte and the secretion of sulfated glycosaminoglycan (sGAG). Results:In the control group and the KBD group, the number of IGF-1[(47.26 ± 8.97), (68.15 ± 7.42) cells] and IGFBP2 positive cells [(27.56 ± 5.40), (71.85 ± 7.62) cells] in the cartilage tissues were significantly different ( t = 4.487, 9.402, P < 0.01). Compared with the control group, the IGF-1, IGFBP2 mRNA and protein expression levels in KBD group were significantly higher, the differences were significantly different ( t = 3.340, 20.700, 4.684, 8.699, P < 0.05 or < 0.01). In cell experiment, the chondrocyte activitives and sGAG contents of the control group, T-2 treatment group, and T-2+ IGFBP2 silenced group were significantly different ( F = 226.70, 80.66, P < 0.01); among them, the cell activitives and sGAG contents of the T-2 treatment group and T-2+ IGFBP2 silenced group were lower than those of control group ( P < 0.05), and the T-2+ IGFBP2 silenced group were higher than those of the T-2 treatment group ( P < 0.05). Conclusions:The expressions of IGF-1 and IGFBP2 in the ankle cartilage of KBD patients are significantly higher. Silencing IGFBP2 gene can reduce the inhibitory effect of T-2 toxin on chondrocyte activity and the secretion of sGAG.

Objective To assesse the quality of life of patients after cardiac pacemaker implantation using the Chinese version of SF-36.Methods Ninety-eight patients with permanent cardiac pacemaker implantation were investigated before and after the operation in terms of quality of life by using the Chinese version SF-36.Results Successful surgery was performed on all the 98 patients.The previous symptoms of the patients were improved to vari- ous extend after the operation.The quality of life of the patients was significantly improved after operation as demon- strated by the significant difference of the scores in 9 domains of SF-36 when compared with those before the operation (P

Poly(ADP-ribose) polymerase-1 (PARP-1) has emerged as a promising anticancer drug target due to its key role in the DNA repair process. It can polymerize ADP-ribose units on its substrate proteins which are involved in the regulation of DNA repair. In this work, a novel series of para-substituted 1-benzyl-quinazoline-2, 4 (1H, 3H)-diones was designed and synthesized, and the inhibitory activities against PARP-1 of compounds 7a-7e, 8a-8f, 9a-9c and 10a-10c were evaluated. Of all the tested compounds, nine compounds displayed inhibitory activities with IC50 values ranging from 4.6 to 39.2 micromol x L(-1). In order to predict the binding modes of the potent molecules, molecular docking was performed using CDOCKER algorithm, and that will facilitate to further develop more potent PARP-1 inhibitors with a quinazolinedione scaffold.
Antineoplastic Agents ; chemical synthesis ; chemistry ; pharmacology ; Drug Design ; Enzyme Inhibitors ; chemical synthesis ; chemistry ; pharmacology ; Molecular Docking Simulation ; Molecular Structure ; Poly (ADP-Ribose) Polymerase-1 ; Poly(ADP-ribose) Polymerases ; Quinazolinones ; chemical synthesis ; chemistry ; pharmacology ; Structure-Activity Relationship

BACKGROUND:Intermittent negative pressure has been proven to promote the repairing of soft tissue and bone healing, but the effect of negative pressure on the tendon-bone healing after anterior cruciate ligament reconstruction has not been reported.
OBJECTIVE:To research the effect of intermittent negative pressure on tendon-bone healing after anterior cruciate ligament reconstruction and on the biomechanics of tendon grafts.
METHODS:A total of 24 New Zealand white rabbits were randomly selected to establish the models of anterior cruciate ligament reconstruction of autogenous semitendinosus. The hind leg of one side was selected randomly as the negative pressure group, and the joint of the negative pressure side was connected with the micro-negative pressure aspirator through drainage tube and maintained a low-intensity and intermittent negative pressure;the contralateral hind leg was as the control and connected with ordinary drainage tube. Drainage tubes of both sides were removed at the same time after 5 days. At 6 weeks after modeling, the joint fluid was drawn to detect the expression levels of interleukin-1β;femur-ligament-tibia complex was used for tension measurement of tendon graft, and histological observation of tendon-bone interface.
RESULTS AND CONCLUSION:One rabbit had joint infection, and final y 23 rabbits were included in the study. Tension measurement results showed that maximum load for breakage in negative group pressure was significantly greater than that in the control group (P<0.05). Histological observation found that the number of osteoblasts in the negative pressure group was significantly more than that in the control group, and the difference was statistical y significant (P<0.01). Detection of synovial fluid showed that iterleukin-1βcontent in synovial fluid of the negative pressure group was lower than that in the control group, and the difference was statistical y significant (P<0.01). Intermittent negative pressure may play an active role in tendon-bone healing and modeling of tendon graft after anterior cruciate ligament reconstruction.

Background Deficiency of neurotrophic factor is associated with the damage of optic nerve in glaucoma.Reaserches showed that ectopically applied neurotrophic factor has a transient neuroprotective effect in glaucoma model,and the viral expression of adeno-associated neurotrophie factor may provide long-term supplementation of neurotrophic factor and neuroprotection in tissues.Objective The present study Was to investigate the neuroproteetive effect of adeno-associated viral(AAV)-mediated brain-derived neurotrophic factor (BDNF)on retinal ganglion cells(RGCs)in DBA/2J mice with experimental glaucoma. Methods 10 clean DBA/2J mice were administered intravitreal injection with 1 microliter of AAV-BDNF-GFP in the left eyes at the age of 6 months,and the right eyes were injected with the same volume of saline solution as control.Intraocular pressure (IOP)was measured with Tonolab in the mice every month.Retinas were obtained after 3 months for the investigation of GFP expression in RGCs using fluorescence microscopy.Immunohistochemistry Was performed by applying TUJ1 and Cy3 antibodies to identify surviving RGCs. Results The IOP of DBA/2J mice were 11.90 mmHg and 11.40 mmHg in the right eyes and left eyes,respectively,at 4 months.The IOP of DBA/2J mice began to rise at 5 months and reached its peak in 8 month-old mice.There was no statistically significant difference in IOPs between the right eyes and the left eyes from 4 month-through 9 month-old mice(t=-1.78-0.61,P=0.11-0.90).Three months after intrlavitreal injection of AAV-BDNF-GFP,GFP was positively expressed in RGCs of retinas with the expression rate of 46.33%±8.08%.The over-expression of BDNF led to more RGCs survival than the control eyes (3168.13±1319.33/mm2 vs 2024.81±796.38/mm2,t=2.75,P=0.02). Conclusion These data suggest that BDNF can exert a protective effect in DBA/2J glaucoma mice.