BACKGROUND: The exact pathogenesis of osteoarthritis is unclear. Studies have shown that macrophages in synovial tissue are involved in sliding-inflammation response and the production of cartilage matrix degradation enzyme. OBJECTIVE: Based on the important role of synovial macrophages in osteoarthritis, to review and summarize the major research achievements and important research methods in this field, laying a foundation for future research on synovial macrophages. METHODS: The first author used computer to search relevant literatures included in PubMed and VIP from 1999 to 2019. The search terms were “osteoarthritis, synovitis, synovial macrophages” in English and Chineserespectively. Manual screening was conducted according to the inclusion criteria, and irrelevant, repetitive and obsolete articles were excluded. Finally, 46 eligible articles were included.RESULTS AND CONCLUSION: There is an inflammatory response in the synovial tissue, and the severity of synovitis is closely related to osteoarthritis symptoms and progression. A large number of macrophages with different activation states are infiltrated in the synovial tissues of osteoarthritis patients at different stages. M1 macrophages are the main subgroup of macrophages involved in the production, cartilage degradation and osteophyte formation of osteoarthritis inflammatory factors, while M2 macrophages have a protective effect on osteoarthritis by secreting anti-inflammatory factors. Inhibiting the differentiation of macrophages into M1 type and promoting their M2 type differentiation can alleviate the pathological changes of osteoarthritis and delay the progression of osteoarthritis. It may be an effective method to treat osteoarthritis by regulating the polarization state of synovial macrophages.

AIM:To compare the operation effect of 2. 2mm micro incision and 3. 0mm incision coaxial phacoemulsification.
METHODS: Patients with age - related cataract ( 90 cases, 90 eyes) were enrolled in the study from January 2012 to June 2013 in our hospital, and they were randomly divided into 2 groups:2. 2mm incision group (45 eyes of 45 cases), 3.0mm incision group (45 eyes of 45 cases). Corneal tunnel incision coaxial phacoemulsification was performed. At 1d, 1wk, 1, 3mo after operation, the visual acuity, corneal endothelial cell count, central corneal thickness, operation astigmatism were recorded.
RESULTS:One day after operation, the visual acuity of 2. 2mm incision group were significantly improved, the difference was statistically significant ( P<0. 05 ), there were no differences in two groups at 1wk, 1, 3mo after operation. No significant differences between the two groups of corneal endothelial cell counting, central corneal thickness at 1wk, 1, 3mo after operation were observed(P>0. 05). Operation source astigmatism had statistically significant difference at 1d, 1wk, 1, 3mo after operation ( P< 0. 05 ), it decreased significantly in the 2.2mm incision group.
CONCLUSION: The 2. 2mm small incision coaxial phacoemulsification with postoperative visual acuity improved more significantly, can significantly reduce the operation astigmatism.

Objective To investigate the effects of low-dose,sustained release oral theophylline on the chronic obstructive pulmonary disease (COPD) patient.Methods Fifty-six patients with stable COPD were randomly divided into two group:theophylline group (n =35) that was treated with slow-release theophylline(100 mg,twice daily),and control group (n =21) that was given with placebo.A series of parameters including lung function,quality of life scores,body mass index,airflow obstruction,dyspnea,and exercise capacity index (BODE) score,exercise tolerance,exacerbations,satisfaction with treatments and adverse effects were tested before and 12 weeks after the treatments.Results Forty two patients completed the study,25 cases in the slow-release theophylline group,and 17 cases in the placebo group.The differences of two groups before the treatment were not prominent except the age (P ＞ 0.05).After treated with slow-release theophylline,the forced expiratory volume in one second (FEV1),forced vital capacity (FVC) and the symptom score were slightly increased,but there were no statistically significant differences (P ＞0.05).After theophylline therapy,the quality of life score,including activity ability score,disease activity score and total score,and BODE index score were significantly decreased(P ＜0.05),but 6 minutes walk test (6 MWT) differences were no significant (P ＞0.05).The differences in pulmonary function test,the quality of life score,BODE index score and 6 minutes walk test were no significant between before and after the treatment with the placebo (P ＞ 0.05).Compared to the cases who treated with the placebo group,the patients in slow-release theophylline group reduced the frequencies of acute exacerbation of chronic obstructive pulmonary disease (AECOPD) (3/25 vs 7/17,x2 =4.748,P ＜0.05),and increased the efficacy satisfaction (Z =-2.579,P ＜ 0.05).Slightly adverse reaction was observed in 3 cases in slow-release theophylline group,but it could relieve by oneself,and not affect the common treatment.There was no adverse reaction in the placebo group.Conclusions Low dose,sustained release oral theophylline was efficient in improvement of the quality of life scores and BODE index score.

Objective To investigate the anti-inflammatory effects of low-dose and sustained release oral theophylline on the chronic obstructive pulmonary disease (COPD) patients.Methods Thirty four patients with stable COPD were randomly divided into two groups:theophylline group (n =18) was treated with slow-release theophylline (100 mg,twice daily),and placebo group (n =16) was given with placebo.Healthy non-smokers (n =12) were taken as control.The course of treatment was 12 weeks both of theophylline group and placebo group.The percentages of Neu/Leu and Mφ/Leu in sputum were detected before and after treatment and the concentrations of interleukin (IL)-17,IL-8,and tumor necrosis factor-α (TNF-et) were detected with enzyme linked immunosobent assay (ELISA).Results (1) Compared to pretreatment with theophylline group,the Neu/Leu was increased [(89 ±4.14)％ vs (83.4 ±6.98)％,P ＜0.05] and the Mφ/Leu was decreased [(6.4 ± 4.11) ％ vs (12.3 ± 6.96) ％,P ＜ 0.05] in the post-treated theophylline group.No significant changes in both Neu/Leu and Mφ/Leu were observed before and after placebo-treatment (P ＞ 0.05).(2) Compared to the control group,the concentrations of TNF-α,IL-8,and IL-17 in the sputum supernatant were significantly increased in both pretreatment and posttreatment with the theophylline or the placebo.Sputum TNF-α,IL-8,and IL-17 levels were significantly decreased in COPD patients who were given theophylline.Compared to pre-treatment with placebo group,the IL-8 and IL-17 levels were significantly increased in the post-treated placebo group (P ＜0.01).There was no significant change in TNF~ level between before and after treatment with the placebo.(3) The concentrations of IL-17,IL-8,and TNF-α in the sputum supernatant were positively correlated with the Neu/Leu counts (r =0.471,0.652,0.466,respectively,all P ＜0.01),negatively correlated with the forced expiratory volume in one second (FEV1 ％) (r =-0.516,-0.652,-0.496,respectively,all P ＜ 0.01).Conclusions Low-dose and sustained-release oral theophylline was efficient in improving airway inflammatory cells and inflammatory mediators,which plays an anti-inflammatory effect.

Objective:To explore the expression of TNF a and IL-10 in different layers of laryngeal tissues after laryngeal transplantation and its relationship with acute rejection.Methods:Laryngeal heterotopic transplantation was performed in Wistar and SD rats(Wistar→SD rats).The SD rats were divided into 4 groups:GroupⅠ:Sham control(receive no transplantation): GroupⅡ(receive transplantation,without cyelosporine A treatment);GroupⅢ(receive transplantation.with 5 mg?kg~(-1)?d cyelosporine A treatment):and GroupⅣ(receive transplantation.with 10 mg?kg~(-1)?d~(-1)cyelosporine A treatment).The transplanted larynx was harvested on 3,7 and 11 days after transplantation for pathological examination.The expression of TNF-?and IL-10 in different layers of grafts was detected immunohistochemically.Results:Pathological observation showed mild,moderate and severe acute rejection in GroupⅡandⅢon 3.7 and 11 days after transplantation,respectively:there was no obvious rejection in GroupⅣ.Immunohistochemical staining showed expression of TNF-?and IL-10 in GroupⅡ.Ⅲ.andⅣ,not in GroupⅠ.The ratios of the positive areas of TNF-?and IL-10 in the mucosal and submucosal layers were significantly higher than those in the muscle and cartilage layers of laryngeal tissues(P

Animals ; Captopril ; pharmacology ; Heart Failure ; metabolism ; Male ; Myocytes, Cardiac ; metabolism ; Proto-Oncogene Proteins c-bcl-2 ; metabolism ; Rats ; Rats, Sprague-Dawley ; bcl-2-Associated X Protein ; metabolism

OBJECTIVETo determine the dynamic expression of survivin gene in hepatocarcinogenesis of rats induced by aflatoxin B1 (AFB1).

METHODS78 Sprague-Dawley rats were used in this study. Hepatocellular carcinoma was induced in the rats by aflatoxin B1. Liver and HCC tissues were examined by immunohistochemistry and reverse transcriptase-polymerase chain reaction (RT-PCR).

RESULTSThe earliest hepatocellular carcinoma occurred at 46th week after AFB1 treatment. The HCC incidence was 54.9% (28/51) at 46th week and 64.9% (24/37) at 58th week. The positive rates of survivin protein expression in 24 HCC, para-cancerous liver tissues of experimental group were 41.7% and 54.2%, respectively, with no significant difference between them (P > 0.05). No survivin expression was detected in the experimental group before 46th week, neither in the rats without HCC occurrence nor the normal controls. The level of survivin mRNA expression in HCC at 58th week was significantly higher than that in pre-HCC, no-HCC and normal liver tissues in the control group (P < 0.01). The level of survivin mRNA expression in para-carcinoma tissues was also significantly higher than that in no-HCC and normal liver tissues of the control (P < 0.01). The level of survivin mRNA in pre-HCC at 12th, 20th, 36th, 46th weeks were significantly higher than those in normal liver tissues taken from control group during the same periods (P < 0.01).

CONCLUSIONThe over-expression of survivin gene is related to the occurrence of HCC and may play an important role in the carcinogenesis of HCC.

Aflatoxin B1 ; Animals ; Apoptosis Regulatory Proteins ; genetics ; metabolism ; Gene Expression Regulation, Neoplastic ; Liver ; metabolism ; Liver Neoplasms, Experimental ; chemically induced ; metabolism ; Male ; Microtubule-Associated Proteins ; genetics ; metabolism ; RNA, Messenger ; metabolism ; Random Allocation ; Rats ; Rats, Sprague-Dawley

OBJECTIVEIn an attempt to study the moleculr characterization and epidemiology of simian adenoviruses in nonhuman primate (NHP) populations.

METHODSWe examined a colony of captively bred rhesus macaques (Macaca mulatta) in China for the presence of adenoviral DNA in stool samples. This was done by using the PCR method that targeted the adenovirus polymerase gene, and the PCR positive fragments were cloned for sequencing and phylogenetic analyses.

RESULTSAmong the 57 animals analyzed, fecal samples from 12 animals were positive for the presence of adenoviral DNA. The results suggested that the viral DNA clones were primarily segregated into two large groups: SAdV-6 (2 non-redundant sequences) and SAdV-7 (9 non-redundant sequences). In addition, there were three clones with more similarity to SAdV-1, SAdV-3 and HAdV-52 respectively.

CONCLUSIONOur data confirmed the prevalence of adenoviral DNA in the feces of NHPs and revealed the adenoviruses in the gastrointestinal tract of the study animals. heterogeneity and phylogenetics of the adenoviruses in the gastrointestinal tract of the study animals.

Adenoviridae ; classification ; enzymology ; genetics ; isolation & purification ; Animals ; DNA-Directed DNA Polymerase ; genetics ; Feces ; virology ; Female ; Macaca mulatta ; virology ; Male ; Molecular Sequence Data ; Phylogeny ; Sequence Analysis, DNA ; Viral Proteins ; genetics

BACKGROUNDPremature ventricular contraction (PVC) is one of the most common kinds of arrhythmias for which the treatment falls into dilemma. Previous clinical application showed that the traditional Chinese Medicine Shensongyangxin (SSYX) capsule is efficacious for the treatment of PVCs. This randomized clinical trial aimed to further evaluate the efficacy and safety of SSYX capsule on treating PVC.

METHODSThe subjects who had frequent PVCs with or without organic heart disease and normal cardiac function were enrolled in the study. The primary endpoint was the change of PVC numbers after eight-week medication with SSYX capsule. The secondary endpoints included change of clinical symptoms related to PVCs and the safety evaluation of SSYX capsule. Totally 188 PVC patients were randomly enrolled in the non-organic heart disease PVCs trial and orally took either SSYX capsules or analogues (three times per day, 4 capsules one time). A total of 671 PVCs patients were randomly enrolled in the organic heart disease PVCs trial, and orally took either SSYX capsules (three times per day, 4 capsules one time) or mexiletine tablet (three times per day, 150 mg one time). The PVCs were monitored and calculated with 24-hour Holter electrocardiogram. Routine blood, liver and kidney function were tested before and after medication with SSYX capsule.

RESULTSSSYX capsules significantly decreased the PVCs numbers and alleviated the related symptoms in patients with or without organic heart disease. In non-organic heart disease group, SSYX capsules and the placebos decreased the PVCs from 12,561.34 ± 9,777.93 to 4,806.87 ± 6,507.17, and 12,605.69 ± 8,736.34 to 10,364.94 ± 9,903.41, respectively. The total effective rate was 74.2% and 28.9% in SSYX and placebo groups (P < 0.001). In organic heart disease group, SSYX capsule and mexiletine decreased the PVCs from 8,641.01 ± 8,923.57 to 3,853.68 ± 7,096.42, 8,621.61 ± 8,367.74 to 5,648.29 ± 8,667.38, respectively. The total effective rate was 65.8% and 50.7% in SSYX and mexiletine groups (P < 0.001). In addition, SSYX capsule significantly alleviated PVCs-related symptoms such as palpitations, chest tightness, insomnia, fatigue, and night sweats. No adverse cardiac events were observed except some slight gastrointestinal side effects during the study.

CONCLUSIONSCompared with placebo or mexiletine, SSYX capsules have significant therapeutic efficacy in reducing PVCs numbers and alleviate PVCs-related symptoms.

Capsules ; therapeutic use ; Double-Blind Method ; Drugs, Chinese Herbal ; therapeutic use ; Humans ; Medicine, Chinese Traditional ; Ventricular Premature Complexes ; drug therapy

OBJECTIVEThis article reports the design and application of a free reverse preauricular flap for one-stage reconstruction of nasal defects.

METHODSA preauricular flap was designed according to the nasal defect, which was harvested with the reverse superficial temporal vessels as its vascular pedicle. The flap size ranged from 3.0 cm x 2.5 cm to 6 cm x 2 cm without any hair-bearing skin. In flap transferring, its pedicle of the superficial temporal vessels was anastomosed with the facial vessels in the nasolabial fold.

RESULTSThe flap survived uneventfully in these three patients. The defects in the distal nose were reconstructed with satisfactory results. The donor site scar was similar to that of face-lift incision.

CONCLUSIONSThis is the first report of clinical applications of the free reverse preauricular flap by microsurgical technique. Microsurgical technique allows successful transfer of this flap in a one-stage procedure. Because of its similar color and texture to the facial skin, this flap provides excellent tissues for coverage of the nasal defect. This technique may have even wider applications for other facial cutaneous defects.

Adult ; Ear, External ; surgery ; Female ; Humans ; Male ; Microsurgery ; Nose Deformities, Acquired ; surgery ; Reconstructive Surgical Procedures ; methods ; Skin Transplantation ; methods ; Surgical Flaps ; blood supply ; Temporal Arteries ; surgery ; Young Adult