The mechanisms of radiation-induced brain injury ( RBI) remain unclear. Currently a number of studies suggest that inflammatory response may play an important role in RBI. The production of reactive oxygen species, the release of inflammatory mediators, the interactions between neurons, glial cells, and pericytes, and the recruitment of peripheral leukocytes all contribute to the development of radiation-induced brain injury. This article reviews the research progress of the inflammatory response mechanism of radiation-induced brain injury.

Objective To investigate major risk factors of mixed hemorrhoid,and provide scientific basis for primary prevention of the disease.Methods A hospital-based 1:1 matched case-control study method was adopted.A total of 341 patients who were diagnosed with mixed hemorrhoid in the Department of Anorectal Diseases,the Affiliated Hospital of Chengdu University of Traditional Chinese Medicine from June 2015 to February 2016 was recruited as case group.Another 341 non-mixed-hemorrhoid patients with the same gender proportion and age difference within 5 years old were taken as control group.Self-designed questionnaires were applied to face-to-face interview these subjects.The questionnaires included occupational factors,living habits,defecation related factors,disease history,reproductive history,family history and basic knowledge of mixed hemorrhoid.SPSS 20.0 software was used for single-factor analysis.Results It turned out that the factors related to occurrence of hemorrhoid were as followed:education level(x2 =15.431),working position(x2 =18.078),duration of single working position(OR=3.345),alcohol intake(OR=3.269),smoking(OR=1.852),spicy food intake(OR =2.409),less physical exercise(OR =1.522),defecation posture(OR =1.750),defecation time(x2 =7.516),defecation frequency(x2 =8.405),stool shape(x2 =8.004),obesity(OR=1.618),reproductive history(OR=2.211) and hemorrhoid family history of first-degree relatives(OR=1.763);The correlation intension (OR value) between anal fissure,anal pruritus and mixed hemorrhoid was 0.564 and 2.714 respectively;While tea drinking,perianal abscess or anal fistula were in no relation to mixed hemorrhoid onset.Conclusion The onset of mixed hemorrhoid is resulted from joint efforts of occupational factors,living habits,defecation habits and reproductive history,etc.Anal fissure,history of anal pruritus and preanal eczema are closely related to mixed hemorrhoid,and genetic factors may get involved as well.

Alpha1-acid glycoprotein (AGP), also known as oral mucus protein (ORM), is an acute phase positive protein. AGPs have various biological activities, such as drug transport, immune regulation, maintenance of capillary barrier, regulation of lipid metabolism, etc. AGP mainly exists in liver cells, but it is also expressed in other tissue cells, such as adipose tissue, brain tissue, endothelial cells and immune cells. This article mainly reviews the application of AGP in pulmonary diseases, and the role,significance and related new developments in different systemic diseases.

ObjectiveTo analyze the distribution of traditional Chinese medicine （TCM） patterns as well as factors related to acute exacerbation in group E of chronic obstructive pulmonary disease （COPD）. MethodsThe general data of 161 COPD patients， including gender， age， body mass index （BMI）， disease course， smoking history， and past history， were collected. In terms of the four examinations of TCM， the differentiated patterns included phlegm-heat obstructing the lung， turbid phlegm obstructing the lung， phlegm stasis obstructing the lung， lung-spleen qi deficiency， and lung-kidney deficiency. The modified British Medical Research Council （mMRC） scale and COPD assessment test （CAT）， the pulmonary function indicators including forced expiratory volume in the first second （FEV1） and ratio of forced expiratory volume to forced vital capacity at second 1 （FEV1/FVC）， GOLD grade， and the patient's acute exacerbations in the previous year were recorded. Multivariate regression analysis was performed using logistic regression model to determine the relevant factors of patients in COPD group E. The distribution of acute exacerbations in different TCM symptom patients in group E was analyzed. ResultsThere were 80 patients （49.69%） in group E and 81 patients （50.31%） in non-group E. In group E， 23 （28.75%） patients had a history of two acute exacerbations， while 35 （43.75%） had three acute exacerbations， and 22 （27.5%） had more than three acute exacerbations. There were 13 （16.25%） cases of phlegm-heat obstructing the lung pattern， 6 （7.5%） cases of turbid phlegm obstructing the lung pattern， 8 （10%） cases of phlegm stasis obstructing the lung pattern， 22 cases （27.5%） of lung-spleen qi deficiency pattern， and 31 （38.75%） cases of lung-kidney deficiency pattern. There were significant differences in smoking history， disease course， TCM pattern， TCM syndrome score， mMRC score， and CAT score between groups （P＜0.05）. A total of 107 of the 161 patients completed pulmonary function tests， and the differences in FEV1， FEV1/FVC and GOLD grades between groups were statistically significant （P＜0.05）. Multivariate regression analysis showed that TCM pattern， TCM syndrome score and CAT score were statistically significant factors for COPD patients in group E （P＜0.05）. There were statistically significant differences in the number of acute exacerbations in different TCM patterns in group E （P＜0.05）. The patients with two acute exacerbations in the past year were mainly phlegm-heat obstructing the lung and lung-spleen qi deficiency patterns， while the three acute exacerbations were mainly seen in lung-spleen qi deficiency and lung-kidney deficiency patterns， and more than three exacerbations were more common with lung -kidney deficiency pattern. ConclusionsPatients in COPD group E were mainly the lung-spleen qi deficiency and lung-kidney deficiency patterns. Deficiency of healthy qi is the main reason for the increase in the number of acute exacerbations， and TCM patterns and CAT score were the main related factors.