Objective To investigate the quantity of formaldehyde released by artificial wood-based boards sold in Lanzhou. Methods Formaldehyde quantity released by three kinds of artificial wood-based boards(42 samples) were determined with desiccator method. Results Among 42 samples, 9 artificial wood-based boards were E1-level (21.4%), 20 E2-level (47.6%), the others disqualification (31%). A significant difference (0.01

Twenty-six eyes which appeared rejection after allograft penetrating keratoplasty between April 2003 and April 2004 in Shandong Shi'erming Eye Hospital were collected, including 16 males and 10 females, 9 cases were repeated relapsing viral keratitis, 8 cases were traumatic posterior corneal leucoma, 5 cases were corneal decompensation caused by various intraocular surgery, 2 cases were congenital leucoma, and 2 cases had other symptom. The rejection occurred at 2 month to 2.5 years after operation. Among them 19 cases were transferred to our hospital and asked adding traditional Chinese therapy because western medicine was ineffective in other hospital. All cases were received local treatment with hormone and non-steroidal anti-inflammatory eyedrop, some cases applied systemic administration with glucocorticoid, mainly based on eye black immunosuppression decoction, potion daily, twice per day, the average time of medication was 11-42 days. Clinical symptoms were served as observation indexes, results showed that the total effective rate of the 26 cases were 100%. The bulbar conjunctiva hyperemia and edema was reduced, corneal opacity became light, and rejection was complete response in 9 cases, 5 of 19 cases which were transferred to our hospital were exempted from operation, and the average vision was improved three lines. It was found that purging liver and eliminating dampness compound Chinese medicine can rapidly reduce anterior chamber's inflammatory response and backoff corneal neovascularization in clinical practice.

Objective To evaluate the efficacy of Marvelon on treatment of adenomyosis.Methods A total of 42 women with adenomyosis were recruited in the study.They were given Marvelon on the first day of menstruation,1 piece,qd,continouly for 21 days.With an alternation of seven days a new cycle begins.There are 6 cycles in total.We observe their degree of dysmenorrheal,menstrual blood volume(MBV) ,hemoglobin and the volume of uterus before and after Marvelon used.Results After 6 months,the dysmenorrheal remitted obviously,the score decline from (8.51±1.73 ) to (0.62±0.70) ,P <0.01.The MBV reduced and hemoglobin rise distinctly ,before treatment Hb is (104.71±12.09) while (112.00±8.57)after therapy,P <0.01.After treatment the volume of uterus shrinks a little, but not significant(P > 0.05).Conclusion Marvelon is an effective drug in treatment of adenomyosis in the near future,and is cheap,convcnieat.

Objective Using the third high sensitive cardiac troponin I assay to establish the reference intervals of serum cardiac marker high sensitivity cardiac troponin I ( hs-cTnI ) in apparently healthy subjects of Beijing area, and to explore the relationship between cTnI and other parameters.Methods Using random selection method, a total of 440 serum samples were collected from apparently healthy subjects of Beijing area.Among them, 217 cases were male, average age was (50.0 ±14.3) years old;223 cases were female, average age was ( 49.0 ±14.0 ) years old.All of these serum samples were detected hs-cTnI using i2000 Abott biochemical analyzer and ARCHITECT STAT Abbott assay kit.And the 99th percentile upper reference limit was used as the reference interval.Non-parametric tests were used to compare the different groups, the U Mann-Whitney test was used between two groups, the Kruskal-Wallis test was used in many groups, and the correlation analysis was used Spearman method.Results The 99th percentiles of hs-cTnI in 440 apparently healthy subjects is 9.66 ng/L.While the male group is 9.66 ng/L, and the female group is 8.25 ng/L.The serum hs-cTnI level of male is higher than female ( 9.95 ng/L vs 8.25 ng/L, P<0.05 ).According to the spearman correlation analysis, the serum hs-cTnI level appears positive correlation with age, brain natriuretic peptide (BNP), alanine aminotransferase (ALT),aspartate transaminase ( AST) ,gamma-glutamyl transferase ( GGT) ,total bilirubin ( TBIL) ,serum creatinine ( SCR) , hemoglobin (HGB)(P<0.05,R>0),and appears negative correlation with platelet (PLT)(P<0.05,R<0).Conclusion The serum hs-cTnI level apparently differents with gender, so it is necessary to establish reference intervals among different gender group of Beijing area.

In order to simplify the distal femoral comminuted fracture surgery and improve the accuracy of the parts to be reset, a kind of surgery orienting model for the surgery operation was designed according to the scanning data of computer tomography and the three-dimensional reconstruction image. With the use of DiMetal-280 selective laser melting rapid prototyping system, the surgery orienting model of 316L stainless steel was made through orthogonal experiment for processing parameter optimization. The technology of direct manufacturing of surgery orienting model by selective laser melting was noted to have obvious superiority with high speed, precise profile and good accuracy in size when compared with the conventional one. The model was applied in a real surgical operation for thighbone replacement; it worked well. The successful development of the model provides a new method for the automatic manufacture of customized surgery model, thus building a foundation for more clinical applications in the future.
Computer-Aided Design ; Femoral Fractures ; surgery ; Fractures, Comminuted ; surgery ; Humans ; Lasers ; Models, Anatomic ; Surgery, Computer-Assisted ; instrumentation

Objective:To evaluate the accuracy and stability of Eye-Monitor, a smart wearable device, in quantifying environmental risks related to myopia.Methods:A diagnostic test study was conducted.Forty-two subjects aged 18-25 years old were recruited from Shandong University of Traditional Chinese Medicine in December 2021.Forty-two Eye-Monitors were selected from 80 devices using the simple random sampling method.Static and dynamic tests were carried out to compare environmental risks related to myopia.The static tests included measurements under different working distances, different head tilt angles when sitting, and different light intensities.The dynamic tests included measurements under different near-work time, different outdoor activity time, different time watching computers, and different phone viewing time.Eye-Monitor with the largest sum of absolute values of total relative error was selected, Spearman rank correlation analysis was used to analyze the correlation between the set values and Eye-Monitor measurements, and the accuracy of the objectively measured values was evaluated by Bland-Altman consistency analysis.The stability of the objectively measured values from Eye-Monitor was evaluated by the coefficient of variation.This study adhered to the Declaration of Helsinki.The study protocol was approved by the Ethics Committee of the Affiliated Eye Hospital of Shandong University of Traditional Chinese Medicine (No.HEC-KS-2021005KY). Written informed consent was obtained from each subject.Results:There were significant correlations between the measured values and setting values in the working distance, head tilt angle when sitting, indoor light intensity, total near-work time, average continuous near-work time, outdoor activity time, time watching computers, and time viewing phones ( rs=0.999, 0.998, 0.999, 0.998, 0.976, 0.959, 0.992, 0.997; all at P<0.001), with the 95% limits of agreement (LoA) of-1.23-2.32 cm, -1.49-4.24°, -13.90-26.90 lx, -6.46-0.11 minutes, -4.50-1.20 minutes, -4.01-1.34 minutes, -2.54-1.94 minutes and-2.15-0.45 minutes, respectively.More than 95% of dots were within the clinically acceptable LoA.The coefficients of variation of the measured values ranged from 1.23%-2.99%, 2.39%-8.25%, 0.87%-8.03%, 1.49%-12.52%, 6.63%-13.59%, 0.00%-14.15%, 1.20%-8.33 and 1.49%-12.51%, respectively, showing good stability.Eye-Monitor had good accuracy in measuring outdoor light intensity (95% LoA: -336.50-130.00 lx). Conclusions:The smart wearable device Eye-Monitor can be used to objectively monitor working distance, head tilt angle when sitting, indoor light intensity, total near-work time, average continuous near-work time, outdoor activity time, time watching computers, and time watching phones, which are with good accuracy and stability.

Objective : To investigate the inhibitory effect of baicalin on Streptococcus mutans UA159 in vitro. Methods : The minimum inhibitory concentration (MIC) of baicalin on Streptococcus mutans UA159 was determined by the liquid multiple dilution method combined with the OD600 value measured by microplate. The OD600 value of Streptococcus mutans UA159 in different concentrations of baicalin was measured by an enzyme mapping instrument. A growth curve was drawn, and the adhesion rate and adhesion inhibition rate were calculated. The effect of baicalin on the formation of Streptococcus mutans UA159 biofilms was observed by the crystal violet quantitative method and scanning electron microscopy. The effect of baicalin on the total number of Streptococcus mutans UA159 bacteria was observed by scanning electron microscopy. Results: The MIC of baicalin on Streptococcus mutans UA159 was 12 mg/mL. With increasing baicalin concentration, the growth rate of Streptococcus mutans UA159 was slowed, the adhesion rate of Streptococcus mutans UA159 decreased and the adhesion inhibition rate increased（P < 0.05）. The results of crystal violet quantitative method showed that compared with the bacterial control group, the biofilm formation of Streptococcus mutans UA159 was significantly reduced after adding baicalin at 0 h, 6 h and 12 h (P < 0.001). Under a scanning electron microscope, the total number of bacteria decreased significantly after adding baicalin at 0 h, 6 h and 12 h. Conclusion baicalin ; natural medicine ; Streptococcus mutans UA159 ; caries ; minimum inhibitory concentration ; growth curve ; adhesion rate ; adhesion inhibition rate ; biofilm formation ; in vitro study

OBJECTIVETo investigate the effects of thalidomide in a mouse model of paraquat-induced acute lung injury and the mechanisms underlying the properties of thalidomide.

METHODSMale ICR mice were randomly allocated into four groups: nomal control group (n = 30), thalidomide control group (n = 30), paraquat poisioning group (n = 30) and thalidomide treatment group (n = 90). Mice were sacrificed at 1d, 3d and 7d after paraquat poisioning. The level of (MDA) malondialdehyde, Superoxidedi-smutase (SOD) and glutathione (GSH) in the lung tissue were measuerd by chemical colorimetry. The expression of Nrf2 mRNA was determined by RT-PCR; Nuclear protein Nrf2 was abserved by Western blotting; Pathological changes of lung tissue were observed under light microscope by HE stain; the lung apoptosis cells were detected by TUNEL.

RESULTSThe levels of MDA, SOD and the expressions Nrf2 mRNA and protein Nrf2 in lung tissue were all markedly increased in mice of paraquat poisioning group than those in nomal group at 1 d, 3 d, 7 d. In contrast, the levels of GSH were decreaseel (P<0.05). Compared with paraquat poisioning group, the pulmonary SOD, Nrf2 mRNA and protein were increased and the lung wet dry ratio were all significantly decreased in mice of THD treatment group at 1 d, 3 d, 7 d (P<0.05). THD alleviated the pulmonary damage in the lightmicroscope at 3d after paraquat poisioning. The apoptosis index was markedly decreased in THD treatment groups comparing to paraquat piosioning group (P<0.05).

CONCLUSIONSLipid peroxide damage was one of the mechanisms of paraquat poisioning, thalidomide could attenuate paraquat-induced acute lung injury and its mechanism may be activating the Nrf2-ARE signaling pathway to protect mouse from Lipid peroxide damage.

Acute Lung Injury ; chemically induced ; drug therapy ; Animals ; Disease Models, Animal ; Lung ; pathology ; Male ; Malondialdehyde ; Mice ; Mice, Inbred ICR ; NF-E2-Related Factor 2 ; metabolism ; Paraquat ; toxicity ; Signal Transduction ; Thalidomide ; pharmacology

Hepatitis B virus (HBV) infection is closely associated with the adverse events such as liver cirrhosis, liver cancer, and liver failure and remains a serious threat to human health. Pegylated interferon is an indispensable drug for the treatment of chronic hepatitis B (CHB), and interferon-stimulated genes are associated with a variety of viruses, but few studies have mentioned their association with hepatitis B and their predictive effect after the treatment of hepatitis B with interferon. This article introduces the predictive factors for interferon treatment of CHB and summarizes the association of interferon-stimulated genes with hepatitis B and their predictive effect, so as to provide a reference for clinical work and basic research.