Objective To learn the academic level and scientific impact of the Chinese Journal of Dermatology by using bihliometric methods. Methods Citation frequencies, first authors and their affiliation, citing journals of cited articles published in the Chinese Journal of Dermatology from 2002 to 2007 were statistically analyzed according to the database of Chinese Medical Citation Index (CMCI) by using bibliometric methods. Results From 2002 to 2007, a total of 2259 original papers were published in the Chinese Journal of Dermatology. Of them, 1224 were cited with a total citation frequency of 3963, citation rate of 54.1%, average citation frequency per paper of 3.2 and top citation frequency of 204. The number of first authors of cited papers amounted to 893, and 61 (6.63%) authors published 3 or more cited papers during this period. These authors were distributed in 30 provinces, municipalities, autonomous regions and 1 foreign country; Jiangsu, Beijing, Zhejiang, Guangdong, Shanghai and Shandong ranked in the top 6 regions with high total citation frequencies. There were 517 journals citing articles published in the Chinese Journal of Dermatology from 2002 to 2007;the top citing frequencies were observed in the Chinese Journal of Dermatology, China Journal of Leprosy and Skin Diseases, The Chinese Journal of Dermatovenereology, Journal of Clinical Dermatology and Southern China Journal of Dermato-Venereology, etc. Conclusions The articles in the Chinese Journal of Dermatology have a high academic quality and citation frequency. Chinese Journal of Dermatology is an important publication in the dermato- venereology field as well as a core periodical in medical field of China.

BACKGROUND: In clinical practice, the selection of dental implants with different specifications is based on the patient' s mandibular plane angle, and the long-term success rate is different in dental implants with different specifications. Therefore, it is reasonable to assume that the mandibular plane angle could affect the mandibular stress distribution of dental implants, thus affecting the success rate of dental implantation.OBJECTIVE: To perform an orthogonal experimental study on the mechanical effects of different implant specifications, mandibular plane angles and mandibular bone densities on stress distribution of the first mandibular molar implants.METHODS: A L9(33) orthogonal experiment was designed with 3 three-level factors, including mandibular plane angle (14°, 22°, 34°), implant diameter (6.6, 8.2, 9.6 mm), and mandibular bone density (types II, III, IV). Different dental implants with different combinations were implanted into an alveolar bone model, and placed onto a pressure testing machine under 500 N load. Then, strain (stress) data were collected in real-time and analyzed.RESULTS AND CONCLUSION: The optimal combination was as follows: low angle; 4.8 mm in diameter; mandibular bone with type II bone density. The relations of all the three factors were the diameter of dental implant > the mandibular plane angle > mandibular bone density. To conclude, the mandibular plane angle has some certain influences on the stability of dental implants. If the biting force is the same, dental implant bears the largest stress under the high angle,subsequently followed by the average angle and the low angle.

Objective To investigate the therapeutic effect of ambroxol in bleomycin-induced pulmonary fibrosis of rats.Methods Sixty Wistar rats were divided into three groups:The normal control group(group N),the model group treated with bleomycinA5(group B)and the group treated with ambroxol(group A).Pulmonary fibrosis was induced by intratracheal instillation of bleomycin.Then the rats received daily ambroxol 35mg/kg(group A),or normal saline(group B).Five rats in each group were killed on 3.7.14 and 28 days after intratracheal instillation.Histological changes of the lungs were evaluated by HE stain and Masson's trichrome stain.The levels of tumor necrosis factor-?(TNF-?)in lung homogenates were measured by radioimmunoassay.Results Pulmonary fibrosis of Group A was significantly improved as compared with that of Group B(P

BACKGROUND: Silver-matrix composite is usually used as a kind of electrical conductive matedal, which has excellent properties in electrical and heat conducting. MoS2, which used as a common solid lubricating material, has unique anti-frictional and lubricating properties in the process of wearing. Ag-MoS2 composites using in the area of electrical sliding wear were fabricated by adding MoS2 to the silver-matrix. OBJECTIVE: Ag-MoS2 composites with different content of MoS2 were produced to gain the mixture ratio for best properties by the experiments of mechanical and wear test. DESIGN, TIME AND SETTING: The controlled experiment was performed at the Department of Matedal Science and Engineering, Hefei University of Technology from April to May 2008. MATERIALS: Silver powder (Bengbu Gold and Silver Article Factory, China) and MoS2 powder (Sinopharm Chemical Reagent Co., Ltd., China) were used in this study. METHODS: Ag-MoS2 composites for five different contents were fabricated by powder metallurgy method, which included the processes of powder mixture, drying, initial pressure, sintering, and second pressure. MoS2 contents were the MoS2 composite of 12.0%, 13.5%, 15.0%, 16.5%, 18.0% silver- MoS2. MAIN OUTCOME MEASURES: Flexural strength was measured by versatility mechanical testing machine. The microstructures of the composites after sintering were observed by an optical microscope. The electrical sliding friction and wear properties were tested by the electrical wear test machine. The worn surfaces of the samples were observed by a scanning electron microscope. RESULTS: With the increase in MoS2, the flexural strength decreased, the resistivity increased, and the wear loss decreased first, and then increased, which comes the lowest point when the MoS2 content was 15%. CONCLUSION: When the content of MoS2 is 15%, the average properties was the best.

Objective To evaluate the effect of chronic low potassium on K+uptake rate in the my?ocardium and skeletal muscle of rabbits. Methods Thirty?two adult male rabbits, aged 12-14 weeks, weighing 2?0-2?7 kg, were randomly divided into 4 groups ( n=8 each) using a random number table:normal feeding group ( group N) , low potassium feeding group ( group L) , potassium supplementation con?trol group ( group SC ) and potassium supplementation experimental group ( group SE ) . N and SC groups were given a normal diet only, and L and SE groups were fed with a low potassium diet for 15 days. Potassi?um chloride ( KCl) 0?5 mol∕L was then infused intravenously at the initial rate of 60 μmol·kg-1 ·min-1 in SE and SC groups. Blood samples were obtained from the central artery of the left ear every 5 min for meas?urement of plasma K+ concentrations. The infusion rat of KCl was then adjusted until the plasma K+concen?tration reached 5?5 mmol∕L and maintained at this level for 1 h, and then infusion was stopped. The total volume of KCl infused was recorded. The hearts and soleus muscle of animals were excised for determination of K+content. K+uptake and uptake rate were calculated. Results Compared with N group, the plasma K+concentration, and K+content in the myocardium and soleus muscle were significantly decreased in group L ( P<0?05) . Compared with SC group, the total volume of KCl infused, and K+uptake and uptake rate in the myocardium and soleus muscle were significantly increased in group SE ( P<0?05) . Conclusion Chro?nic hypokalaemia can increase K+ uptake rate in the myocardium and skeletal muscle of rabbits.

ObjectiveTo observe the dynamics of antibodies and protection against Schistosoma japonicum infections in buffaloes after immunized with recombinant 26 kDa glutathione S transferase (reSjc26GST). Methods Buffaloes in 2 villages endemic for schistosomiasis japonica were selected as test and control groups, respectively.In test group initially 96 buffaloes were vaccinated with reSjc26GST, and 90 buffaloes in the control group did not experience vaccination. The indicators included levels of antibodies to reSjc26GST in buffaloes before and after infection with S japonicum and changes in infection rate. Results Specific antibodies, which showed a trend of trapezoid increase, were induced in buffaloes after immunized with reSjc26GST. Twenty months after immunization, the infection rate of the test group was decreased by 62 2% when compared with that before vaccination,and by 67 7% when compared with that of the control in the corresponding period.Conclusion Specific antibodies and a certain extent of protection were induced in buffaloes after immunized with reSjc26GST, which played an significant role in ameliorating morbidity.

Objective:To explore the effect of coronary injection of recombinant human prourokinase (rhPro-UK) during PCI for ST-segment elevation acute myocardial infarction (STEMI) patients.Methods:A total of 124 STEMI patients treated in Tangshan Gongren Hospital, Hebei Province from November 2018 to November 2019 were selected as the research objects.They were simply randomized by random number table method into the observation group(63 cases) and the control group(61 cases). Thrombus aspiration was used.The control group was treated with 25 μg/kg tirofiban, and the observation group was injected with 20 mg rhPro-UK into the coronary arteries.After that, both groups underwent emergency PCI treatment.The bleeding degree, myocardial microcirculation indexes, plasma fibrinolytic factor changes, vascular recanalization, ST segment fall of electrocardiogram and changes in left ventricular end diastolic diameter (LVEDD), left ventricular end systolic diameter (LVESD), left ventricular ejection fraction (LVEF), cardiac index (CI) were recorded.Results:The peak value of creatine kinase isoenzymes MB (CK-MB) (184.64±21.47) U/L and the peak time of CK-MB (14.32±2.02) h in the observation group were significantly lower than those in the control group((258.94±31.64) U/L, (16.58±2.09) h), the differences were statistically significant ( t=15.345 and 6.123, all P<0.001). After treatment, human tissue plasminogen activator (t-PA) (0.85±0.28) kU/L in the observation group was significantly higher than that in the control group (0.74±0.24) kU/L, human plasminogen activator inhibitor (PAI-1) (0.16±0.05) kU/L.compared with the control group (0.32±0.08) kU/L significantly decreased ( t=2.345, P=0.021; t=13.401, P<0.001); 77.78% (49/63) of the ST-segment complete fall in observation group was significantly higher than 54.10% (33/61) of the control group ( Z=7.758; P=0.005), and 4.76% (3/63) in the observation group without a fall in ST segment was significantly lower than 19.67% (12/61) of the control group ( Z=6.480; P=0.011). The LVEDD at 7 days, 14 days and the LVESD at 7 days and 14 days in the observation group were (49.37±3.14) mm, (48.34±3.03) mm, (33.19±2.23) mm and (32.05±2.23) mm respectively, which were significantly lower than those in the control group at 7 days, (50.64±3.03) mm, (49.66±2.83) mm, (34.86±1.73) mm and 14 days, (33.74±1.97) mm respectively ( P<0.05 or P<0.001). The LVEF of 7 days and 14 days after treatment were (56.32±4.97)% and (59.23±5.11)%, which were significantly higher than those of the control group (54.46±4.87)% and (57.18±4.33)% ( P<0.05 or P<0.001). CI at 7 days and 14 days after treatment were (3.65±0.22) L/ (min·m 2) and (3.76±0.21) L/(min·m 2), which were significantly higher than those of the control group (3.48±0.25) L/(min·m 2) and (3.56±0.24) L/(min·m 2)( P<0.05 or P<0.001). Conclusion:STEMI patients treated by intraoperative coronary injection of Rhpro-UK versus tirofeban, can further improve the total bleeding rate and the vascular recanalculation rate, and also significantly improve plasma fibrinolysis factor, myocardial microcirculation and cardiac function.This provides an alternative to the treatment of myocardial infarction in patients with STEMI.

Objective To investigate the risk factors for osteoporosis (OP) in aged people at Beicai Town in Shanghai, to provide proofs for preventing OP. Methods Questionnaire survey was carried out on bone density in 608 aged people (aged from 60 to 79 years) who were randomly chosen from 4 resident committees of Beicai Town in Shanghai. Everyone underwent bone mineral density (BMD) assay of lumbar spine and total hip by DEXA machine. Results The rate of OP was 23 % in male group, and 61% in female group. It was 40% in 60-64 years old group, 44% in 65-69 years old group, 53% in 70-74 years old group and 66% in 75-79 years old group. The rate of OP was 52% in manual work group, and 42 % in non-manual work group. In males, it was 54 % in current weight less than 60 kg group, 19% in 60-70 kg group, 15% in 70-80 kg group and 23% in over 80 kg group. In females, it was 76% in current weight less than 50 kg group, 67% in 50-60 kg group, 63% in 60-70kg group, 30% in over 70 kg group. It was 56% in low body weight group, 41% in normal weight group and 58% in over weight group in their 25-year-old. It was 61% in normal body weight group, 43% in overweight group. It was 41% in non-fracture history group, 67% in once fracture group,74% in fracture history more than twice group. It was 60% in mother humpback history group, and 47% in no history of mother humpback group. Logistic regression analysis showed that gender, age,history of fracture, mother's humpbacked history, disease of internal secretion and metabolism system were the risk factors for OP. Conclusions The occurrence of OP is related with many factors in aged people at Beicai Town in Shanghai, especially for the aged women, who suffer from diseases of internal secretion and metabolism, and has the history of fracture and mother's humpbacked, the attention should be payed to the prevention and treatment of OP.

Objective To evaluate the effect of hypotension factor on endotracheal tube cuff-in-duced damage to tracheal mucous membrane of rabbits. Methods Eighty healthy rabbits of both sexes, aged 3.0-3.5 months, weighing 2.5-3.5 kg, were divided into 16 groups(n=5 each)according to the cuff pressure and mean arterial pressure(MAP): different cuff pressures when MAP did not decrease groups(C1M1group, C2M1group, C3M1group, C4M1group), different cuff pressures when MAP de-creased by 20% of the baseline value groups(C1M2group, C2M2group, C3M2group, C4M2group), dif-ferent cuff pressures when MAP decreased by 30% of the baseline value groups(C1M3group, C2M3group, C3M3group, C4M3group), and different cuff pressures when MAP decreased by 40% of the baseline value groups(C1M4group, C2M4group, C3M4group, C4M4group). Different cuff pressures were 0, 10, 20 and 30 cmH2O.At 2 h of tracheal intubation, the tracheas in the cuff-compressed area were harvested and sliced for examination of the pathological changes of tracheal mucous membrane after haematoxylin and eosin staining(with a light microscope), and the damage to tracheal mucous membrane was scored. Results When at the same low pressure(MAP decreased by 20%, 30% and 40% of the baseline value), the score of damage to tracheal mucous membrane increased with the increasing cuff pressures(P<0.05). When at the same cuff pressure(10, 20 and 30 cmH2O), the score of damage to tracheal mucous membrane in-creased with the increasing MAP(P<0.05). There was interaction between cuff pressure and MAP, F=2.034(P<0.05). Conclusion There is interaction between the effects of hypotension factor and endotra-cheal tube cuff factor on damage to tracheal mucous membrane; hypotension factor can aggravate endotra-cheal tube cuff-induced damage to tracheal mucous membrane of rabbits.

The fungus Trichophyton schoenleinii (T. schoenleinii) is the causative agent of Trichophytosis and Tinea favosa of the scalp in certain regions of Eurasia and Africa. Human innate immune system plays an important role in combating with various pathogens including fungi. The inflammasome is one of the most critical arms of host innate immunity, which is a protein complex controlling maturation of IL-1β. To clarify whether T. schoenleinii is able to activate the inflammasome, we analyzed human monocytic cell line THP-1 for IL-1β production upon infection with T. schoenleinii strain isolated from Tinea favosa patients, and rapid IL-1β secretion from THP-1 cells was observed. Moreover, applying competitive inhibitors and gene specific silencing with shRNA, we found that T. schoenleinii induced IL-1β secretion, ASC pyroptosome formation as well as caspase-1 activation were all dependent on NLRP3. Cathepsin B activity, ROS production and K⁺ efflux were required for the inflammasome activation by T. schoenleinii. Our data thus reveal that the NLRP3 inflammasome plays an important role in host defense against T. schoenleinii, and suggest that manipulating NLRP3 signaling can be a novel approach for control of diseases caused by T. schoenleinii infection.
Animals ; Bone Marrow Cells ; cytology ; Carrier Proteins ; metabolism ; Caspase 1 ; metabolism ; Cell Line ; Dendritic Cells ; cytology ; metabolism ; microbiology ; Enzyme Activation ; Hot Temperature ; Humans ; Inflammasomes ; metabolism ; Interleukin-1beta ; biosynthesis ; metabolism ; Lysosomes ; metabolism ; Mice ; Monocytes ; cytology ; metabolism ; microbiology ; NLR Family, Pyrin Domain-Containing 3 Protein ; Potassium ; metabolism ; Reactive Oxygen Species ; metabolism ; Signal Transduction ; Trichophyton ; physiology