Objective To investigate the adsorptive capacity of cross-linked agar entrapping attapulgite clay (CAA) capsule, a novel adsorbent for hemoperfusion. Methods We selected some drugs such as phenothiazines, methylene blue, and diazepam as the model components to test the adsorptive capacity of CAA in human blood in vitro by means of static stirred absorption experiment and repeated hemoperfusion. Results CAA was of strong adsorption for phenothiazines and methylene blue but of little effect on diazepam. The corresponding adsorptive mechanisms were also discussed here. Conclusion CAA could be used as a highly effective adsorbent for the cation drugs in human blood.

Continuous exposure to conventional glucose-containing lactate-buffered solutions will ultimately lead to irreversible changes of the structure and function of peritoneum.Therefore,the development of novel peritoneal dialysis(PD) solutions has become the focus in the PD fields in recent years.Icodextrin,which has more adventages than conventional PD solutions,is one of the most important advancements in the past decade.Icodextrin has better biocompatibility,and can reduce the absorption of carbohydrates to decrease the metabolic complications in PD patients.Apart from increasing ultrafiltration,icodextrin can also improve the fluid status and protect the residual renal function of PD patients.However,adverse consequences may result from the pseudo-hyperglycaemia caused by limited measurement of serum glucose.This article reviews the features and applications of the new PD solutions—icodextrin solutions.

To screen the illegal substances in fishery inputs,we established the database including the precursor and the daughter ions for these possible components by the quadrupole/orbit-trap mass spectrometer,and the retention time of each drug on the same chromatographic column.And then,the extracted and diluted samples were analyzed and the components in the real samples were identified under the same conditions.Chromatographic analysis was performed on an Accucore RP-MS column (100 mm × 2.1 mm,2.6 μm) using gradient elution with 0.1％ formic acid in water and 0.1％ formic acid in acetonitrile as mobile phase.Elutes were ionized through heatable electrospray ionization (HESI) in both positive and negative mode simultaneously.Data acquisition was conducted by Full-scan ddMS2 (TopN) mode,in which the full mass profile for a continuous precursor ion injection and the fragments of each high abundant precursor of targeted were acquired with excellent time and mass resolution.Screening was carried out through comparison of the information of real samples with that of standards in the database,which were processed by software (Tracefinder).The Quantification of each component was analyzed based on the precursor ion chromatography acquired by orbit-trap mass spectroscopy,which showed a good linearity between 0.01-1 μg/mL,with R＞0.98.The method was validated by checking its minimum screening concentration (0.5 mg/L for drugs and 5 mg/L for feedstuffs) and evaluating the recovery after addition of the standard mixture in real samples (＞50％,under the addition of 10 and 100 mg/kg).The results for 68 practical samples demonstrated the effective performance of this method for screening with high-throughput,rapidness and acceptable minimum screening concentration and accuracy,in which 15 of 29 fishery drug samples were screened out for positive components that were not indicated in their labels.

OBJECTIVE To investigate bacterial contamination of throat spray in different patient groups before and after using it and explore the satisfactory disinfection methods for decreasing the rate of hospital acquired infection.METHODS The methods were used in accordance with Disinfection Technology Criteria.We compared the germicidal effect of five kinds of methods.RESULTS Bacterial contamination was very serious after using throat spray,many bacteria,even pathogens,as well as the normal flora from the region of nasopharynx had been found there.Bacterial contamination was more serious in ENT department patient than in endoscopy patient after using throat sprays.Burning,alcohol,iodophor and disinfectants containing iodine with alcohol were better than oxidized potential water method on disinfection effect.CONCLUSIONS Much attention should be paid to the contamination of throat spray,selecting the most effective disinfection methods,hospital infections caused by invasive manipulation could be prevented when correct methods are adopted.

Objective To modify the method of gavage administration in guinea pigs. Methods Fourty awake guinea pigs were kept rearing on the hind legs and leaning on a vertical fixture to avoid their escaping forward. A 1 mL injector was inserted into the mouth to the depth when the molar teeth were passed. Another fourty guinea pigs under general anesthesia were reversed at trendelenburg position and a children suction tube with an outer diameter of 2 mm was inserted into the stomach. Results All of the 80 guinea pigs were administered by modified gavage smoothly for seven consecutive days by one operator each time. None endured much pain or digestive tract injury, or died from air way perfusion by mistake. Conclusions We successfully modified the gavage method in guinea pigs, which would definitely take guinea pigs involved in intragastical pharmacal experiments besides the routine of rats and mice.

Objective To establish the norms of Self-rated Health Measurement Scale Version 1. 0 ( SRHMS V1.0) for urban residents in Guangdong. Methods We used regional stratified random sampling method to select 6000 urban residents of 5 cities in Guangdong ( including Guangzhou, Maoming, Shantou, Shaoguan and Shenzhen) for a questionnaire investigation with SRHMS V1. 0, and establish the norms of mean,percentile and threshold based on characteristics of SRHMS V1.0 scores. Results The residents can be divided into 8 groups on the basis of gender and cut-off point of age 40,50 and 60. The mean norms of SRHMS V1.0 total scores were:(78.57±10.10),(76.93±9.90),(75.33±10.66),(69.45±13.90)for males under age40,40-50,50-60 and above 60 respectively;(77.03±10.00),(74.55±10.27),(72.24±11.76), (66.48±14.37)for females under age40,40-50,50-60 and above 60 respectively. The percentile norms of SRHMS V1.0 from 5 percent to 95 percent were established with 5% as interval. The norms of cutting off scores were established as five states according to the scores of TS,namely severe poor health,poor health,gen-eral health,good health and fairly good health,with( x-s),( x-0.5s),( x+0.5s),( x+s) as cutting off scores. Conclusion The study established the SRHMS V1.0 norms for urban residents of Guangdong preliminarily,which provides reference for further research of the population''s health status and its impacting factors.

Objective To observe the effects of modifiedDanshen Decoction on spermidine/spermine acetyltransferase (SSAT) /polyamine pathways of SD rats with IRI; To investigate its protective mechanism. Methods The model of IRI was established by ligating left anterior descending coronary artery for 30 min followed by reperfusion for 90 min. The SD rats were randomly divided into the control group, sham-operation group, model group and modifiedDanshen Decoction group, with 10 rats in each group. The myocardial infarction size was measured by using TTC staining. The contents of SSAT were measured by ELISA. The SSAT mRNA and SSAT protein expression level were detected with real-time fluorescent quantitative PCR method and Western blot, respectively. The contents of polyamines (putrescine, spermidine, spermine) in cardiac tissue were detected by HPLC. Results Compared with sham-operation group, the myocardial infarction size, the SSAT content, the SSAT mRNA and SSAT protein expression levels of model group increased significantly, the contents of polyamines decreased significantly, with statistical significance (P<0.01); Compared with model group, the myocardial infarction size of modifiedDanshen Decoction group was significantly reduced, while the SSAT content and SSAT mRNA and protein expression level decreased significantly, the contents of polyamines increased, with statistical significance (P<0.05, P<0.01).ConclusionModifiedDanshen Decoction can adjust the SSAT polyamine pathways and increase polyamine content in cardiomyocytes, and thus play a role of protection of myocardial ischemia-reperfusion injury.

OBJECTIVETo evaluate Beijing college students' concern and preference for maxillary anterior tooth esthetic factors.

METHODSSeveral images about lip and tooth were made through computer. A questionnaire was sent out to students in ten colleges and then collected. There were five factors to be evaluated: relationship of maxillary incisors and lower lip, numbers of tooth exposed, shape of centric incisor, crown width-length ratio, gingival margin. Concern of the beauty of anterior tooth, ie. tooth shape, tooth arrangement, shape of gingiva and so on, were then analyzed.

RESULTSThere were 408 responses collected, and 47.5% (194/408) of them preferred light contact between upper incisors and lower lip; 49.5% (202/408) preferred 8 tooth exposed when smile; 69.1% (282/408) preferred oval crown shape; 52.5% (214/408) preferred 0.85 as a crown width-length ratio; 49.5% (202/408)of responses chose the curve of gingiva runs horizontal. The average score of concern for male was 52.6% (100/190), for female was 59.6% (130/218).

CONCLUSIONSMost results from this study accord with the classical principles of tooth esthetics. Sex affects the concern and preferences of maxillary anterior tooth esthetics factors.

Adult ; China ; Esthetics, Dental ; Female ; Gingiva ; anatomy & histology ; Humans ; Incisor ; anatomy & histology ; Lip ; anatomy & histology ; Male ; Maxilla ; anatomy & histology ; Odontometry ; methods ; Patient Preference ; Sex Factors ; Smiling ; Surveys and Questionnaires ; Tooth Crown ; anatomy & histology ; Young Adult

In 2009, Ministry of Health mapped out the Guiding Principle of Clinical Pathway. Rehabilitation is different with early treatment of common diseases. This paper mainly introduces the objective of rehabilitation clinical pathway, organization of management system,guiding principle of mapping-out and implementation and evaluation and improvement of medical quality.

Objective: To explore the association between physical activity levels and depressive symptoms among college students, so as to provide evidence for promoting physical and mental health of college students. Methods: Using a cohort study design,a baseline survey of 1 415 college students in Shenyang Normal University in 2017 followed for three years from 2018 to 2020. The International Physical Activity Questionnaire-Short Form (IPAQ-SF) and Selfrating Depression Scale (SDS) were used to evaluate the physical activity levels and depressive symptoms of college students. According to the level of physical activity at baseline (MET ·h/week), participants were divided into three groups [T1 (≤36.4), T2 (>36.4-89.3) and T3 (>89.3)]. Logistic regression analysis was used to examine the association between baseline physical activity levels and the incidence of depressive symptoms during the school years. Results: In the 3year followup (2018-2020), 852 (60.2%) participants exhibited depressive symptoms. The numbers of individuals with depressive symptoms in the T1, T2, and T3 groups were 324, 268, and 260, respectively. Logistic regression analysis showed that college students who participated in higher levels of physical activity decreased the risk of depressive symptoms by 34.2% [T2: OR(95%CI) = 0.658 (0.500-0.866)] and 38.9% [T3:OR(95%CI)=0.611(0.465-0.804)] compared with T1 group after adjusting for demographic, lifestyle, healthrelated factors, and baseline depressive symptoms as covariates. The sexstratified analysis showed a negative correlation between physical activity levels and the incidence of depressive symptoms in female college students. Compared with T1 group, higher levels of physical activity reduced the incidence of depressive symptoms by 39.6% [T2: OR(95%CI)=0.604(0.445-0.820)] and 37.7% [T3: OR(95%CI)=0.623(0.459-0.846)], respectively (P<0.01). However, there was no significant correlation between physical activity levels and depressive symptoms in male college students (P>0.05). Conclusions There is an inverse relationship between physical activity levels and depressive symptoms. The findings suggest that schools should reduce the risk of depressive symptoms by promoting physical activity levels among college students.