Alzheimer's disease is a serious neurodegenerative disease without effective treatment. In recent years, researchers have tried to treat Alzheimer's disease with low-dose radiation therapy (LDRT) and have made some progress in animal models and clinical trials. Current studies have shown that LDRT can improve cognitive function in Alzheimer's patients by reducing β amyloid plaque deposition and reducing inflammation levels in central nervous system. In this review, we present the current preclinical and clinical studies, propose the possible mechanisms of LDRT in Alzheimer's disease, and discuss challenges in the planning of future trials.

Objective:To investigate the effects of Tiaogan Lifei Decoction on the level of symptom control in patients with bronchial asthma (asthma) treated with moderate and high dosage inhaled glucocorticoids (ICS).Methods:Randomized double-blind placebo controlled prospective study was used. Totally 90 patients with asthma (liver lung disharmony, wind phlegm blocking collateral syndrome) using moderate and high dosage ICS who met the inclusion criteria from January 2020 to December 2021 in Chaoyang District Hospital of Traditional Chinese Medicine in Beijing were divided into two groups according to random number table method, with 45 cases in each group. On the basis of using the original dosage of ICS, the treatment group used Tiaogan Lifei Decoction, while the control group used Tiaogan Lifei Decoction simulant. The course of treatment was 12 weeks. TCM symptom score of both group before and after the treatment was detected; asthma control test (ACT) was used to assess the effects of asthma on the patients; St George's Hospital Respiratory Questionnaire (SGRQ) was used to assess patients' quality of life; the peak expiratory flow rate (PEF) was measured with a peak expiratory flow meter. 2 ml of venous blood was collected for eosinophil (EOS) detection, and the serum allergen specific IgE level was determined by ELISA. The adverse reactions were observed during the treatment and the clinical efficacy was evaluated.Results:During the test, 3 cases and 2 cases in the treatment group and control group lost prevention respectively. 3 cases in the treatment group and 6 cases in the control group withdrew from the trial because of the aggravation of symptoms and the need to increase the dosage of ICS. The total effective rate in the treatment group was 78.6% (33/42), and that in the control group was 55.8% (24/43), with statistical significance ( χ2=4.98, P=0.026). After treatment, the scores of daily activities, early awakening, control and total scores in the treatment group were higher than those in the control group ( t values were 1.76, 1.99, 2.00, 2.69, respectively, P<0.01 or P<0.05); after treatment, the scores of cough, chest tightness, active wheezing, upset, pharyngeal itch and total score in the treatment group were lower than those in the control group ( t values were -5.89, -6.01, -5.66, -4.27, -6.67, -9.05, respectively, P<0.01); SGRQ score in the treatment group was lower than that of the control group ( t=-7.19, P<0.01). No serious adverse reactions occurred during treatment in the two groups. Conclusion:Tiaogan Lifei Decoction is helpful to improve the symptom control level of asthma patients who are using ICS, and effectively improve the quality of life of patients with asthma of liver lung disharmony and wind phlegm obstructing collaterals syndrome.

Objective: To analyze and summarize the results of genomic DNA test findings of chemotherapeutic drugs commonly used in pediatric rhabdomyosarcoma (RMS) in children, and to analyze the relationship between adverse reactions to chemotherapy toxicity and genomic DNA polymorphisms, so as to provide evidence for guiding treatment. Methods: Retrospective analysis was conducted in RMS children admitted at Hematology Oncology Center, Beijing Children′s Hospital, Capital Medical University from January 2017 to June 2018.The criteria for enrollment were definite diagnosis of RMS, regular treatment and follow-up at Hematology Oncology Center, Beijing Children′s Hospital, Capital Medical University, and detection of peripheral blood DNA fluorescence hybridization sequence for several commonly chemotherapy drugs.The toxicity of chemotherapeutic drugs was detected based on the National Cancer Institute routine toxicity criteria (NCI-CTCAE version 4.0). Summary and analysis indicators included primary and metastatic site, size, international RMS clinical stage (TNM-UICC), Intergroup Rhabdomyosarcoma Study(IRS) Clinical Grouping Classification, risk grouping, pathological type, changes in major organ functions, as well as processes of surgery, chemotherapy and radiotherapy, and the association between toxicity and DNA polymorphism of drug genes was analyzed.SPSS 22.0 software was used for χ² test. Results: A total of 32 children were enrolled, and 20 cases were male and 12 cases were female, their median age was 50 months (15-120 months). The primary tumor of 9 cases were sited in the chest, abdomen and basin, 8 cases in the head and neck (non-meningeal), 7 cases in bladder prostate, 3 cases in limbs, 2 cases in the meningeal area, 1 case in urogenital tract (non-bladder prostate), 2 cases in other parts.Seventeen cases were embryonic type and 15 cases were alveolar type.Five cases were TNM-Ⅰ stage, 5 cases were TNM-Ⅱ stage, 10 cases TNM -Ⅲ stage, 12 cases were TNM-Ⅳ stage, 21 cases were IRS-Ⅲ, 11 cases were IRS-Ⅳ.Twenty-two cases were moderate-risk (MR), 10 cases were high-risk (HR). Twenty-two cases were detected UGT1A1*6 gene, 18 cases in GG type, 13 cases in GA type, and 1 case in AA type.ABCB1 gene monitoring was performed in 27 children, 14 cases of CT type and 13 cases of TT type; 29 cases were detected GSTP1 gene, 7 cases of GA type and 2 cases of GG type, 19 cases of AA type, 1 case of AG type; 30 cases were detected CYP3A5 gene, 2 cases of GA type, 13 cases of GG type, AG 15 cases.All patients were treated according to the BCH-RMS-2007 protocol using VAC (Vincristine, Doxorubicin, and Cyclophosphamide) as the basis for chemotherapy.From 2017, VAC and VI regimen (Vincristine, Irinotecan) were defined as the standard of backbone chemotherapeutic regimen for MR.Nine cases underwent surgery before chemotherapy and 10 cases had surgery after chemotherapy, among them, 5 cases underwent twice operation.Local radiotherapy was performed on the 12^th week of chemotherapy, and the central nervous system involvement cases started in the first week.Hematological toxicity was mainly caused by neutropenia, with 2 cases of grade 3 and 30 cases of grade 4.Liver function damage of grade 2 was 6 cases, grade 3 was 3 cases.Four patients with grade 1 diarrhea, 3 patients with grade 2, 5 patients with grade 3, 3 patients with grade 4.There was significant diffe-rence between the severity of diarrhea and UGT1A1*6 genotype polymorphism(P<0.05). Conclusions Chemothe-rapy for RMS patients is highly safety.If the genomic DNA test of chemotherapy drugs show a slow metabolism type, the dose of chemotherapy should be reduced, and the toxicity of chemotherapy drugs should be monitored dynamically.

Objective To find out the cognition and participation of people in the disease areas of Shandong Province on prevention and treatment of iodine deficiency disorders (IDD), and to evaluate the effectiveness of a health education project on prevention and control of IDD. Methods From 2011 to 2015, a prospective research was used in study, 46 iodine-deficient counties (cities, districts) were selected as project counties in Shandong Province each year, and 3 townships (towns) were chosen in each project county. Health educational activities on IDD prevention and control knowledge were carried out in the central primary school, 3 villages were chosen in each selected township (town) where the health educational activities in the community were carried out. Before and after the healthy education activities, questionnaire surveys on IDD prevention and control knowledge were conducted among 30 students of grade 5 in the central primary school and 15 housewives lived near the schools in each selected township ( town ) . Results After the health education activities , the knowledge awareness rates of students and housewives on IDD prevention and control were 96.06％ ( 61232/63471 ) and 95.44％(32576/34131), respectively, which increased significantly compared with those before the intervention [ 79 . 00％ ( 50038/63342 ) and 81 . 25％( 27281/33576 ) ] , and the differences were statistically significant (χ2 = 8435.19, 3326.19, P < 0.05). Among the primary school students and housewives, the knowledge awareness rates of IDD prevention were increased by 17.06％ and 14.19％, respectively. Conclusion After implementing the intervention measures of IDD health education, the awareness rate of IDD prevention and control knowledge in iodine deficiency areas in Shandong Province is significantly increased, which has achieved the effectiveness of IDD health education behavioral intervention.

Allergic rhinitis (AR) is a global health problem that causes major illnesses and disabilities worldwide. Epidemiologic studies have demonstrated that the prevalence of AR has increased progressively over the last few decades in more developed countries and currently affects up to 40% of the population worldwide. Likewise, a rising trend of AR has also been observed over the last 2–3 decades in developing countries including China, with the prevalence of AR varying widely in these countries. A survey of self-reported AR over a 6-year period in the general Chinese adult population reported that the standardized prevalence of adult AR increased from 11.1% in 2005 to 17.6% in 2011. An increasing number of original articles and imporclinical trials on the epidemiology, pathophysiologic mechanisms, diagnosis, management and comorbidities of AR in Chinese subjects have been published in international peer-reviewed journals over the past 2 decades, and substantially added to our understanding of this disease as a global problem. Although guidelines for the diagnosis and treatment of AR in Chinese subjects have also been published, they have not been translated into English and therefore not generally accessible for reference to non-Chinese speaking international medical communities. Moreover, methods for the diagnosis and treatment of AR in China have not been standardized entirely and some patients are still treated according to regional preferences. Thus, the present guidelines have been developed by the Chinese Society of Allergy to be accessible to both national and international medical communities involved in the management of AR patients. These guidelines have been prepared in line with existing international guidelines to provide evidence-based recommendations for the diagnosis and management of AR in China.
Adult ; Asian Continental Ancestry Group* ; China ; Comorbidity ; Developed Countries ; Developing Countries ; Diagnosis* ; Epidemiologic Studies ; Epidemiology ; Global Health ; Humans ; Hypersensitivity* ; Prevalence ; Rhinitis, Allergic*

Objective To explore the accuracy of Vitek 2 compact advanced expert system (AES) in indicating and analyze the carbapenemases-resisting Enterobacteriaceae phenotypes,and further investigate the methods to make up the AES.Methods 28 Enterobacteriaceae strains with Imipenem-Nonsusceptible by Vitek 2 compact,but AES suggested all production of carbapenemases were isolated.And imipenem susceptibility was determined by the disk diffusion method.Modified Hodge test (MHT) and the metallo-β-1actamase was detected by the double disk synergy method.Resistance genes were detected by the PCR amplification.Results ESBLs gene was amplified from all 28 selected strains,16 of which was detected KPC gene,and no strain of metallo-β-1actamases-producing bacteria.With carbapenemase gene detection as the gold standard,the accuracy of AES was 57.1％.Disc diffusion method detection accuracy rate of imipenem was 100％,and for 100％ of MHT accuracy.PCR amplification,MHT and the disk diffusion displayed the same result in detecting carbapenemases,but different with AES (x2 =10.08,P＜0.05).Conclusion The indications of the presence of carbapenemases using AES was not completely correct with a certain false-positive,and it is necessary to take other methods,such as disk diffusion or MHT methods,and improve the reliability of medicine-sensitivity tests.

Objective ToinvestigatethementaldevelopmentsituationofpreschoolchildreninTaiyuan. Methods 1174preschoolchildrenoftwourbanareasinTaiyuanwereselected.TheyweretestedwithDenverDevel-opmentScreenTest(DDST).Results Thepassingratewas94.80%in1174children.Theirindividual-social reaction ability and movement ability were good in the three groups.In the subject-touch reaction ability,the passing rate ofvertical tilt at 30°insidewas 36.36%in 4 years old group,which was higher than the other projects.In the speaking ability,the passing rates of three right in four problems with knowing preposition were 15.88% and 27. 22% in 4 and 5 years old group,which were higher than the other projects.The culture degree of the mental retar-dation children's parents were lower than those of the normal children's parents,the difference were statistically signifi-cant(χ2=4.485,P=0.034;χ2=7.577,P=0.006).Conclusion DDSTisaquicklyscreeningmethodformental retardation children,it is suggested to be used in medical and health examination for preschool children.

The application and studies of reduced diameter implants(RDI)are increasing recently.A case with fracture of three 3.3 mm ITI implants in maxilla was reported in this paper.Combined with the related literature,overload,mechanical complications(such as fatigue, crevice corrosion and hydrogen embrittlement)and the insufficiency of mechanical properties of RDI may lead to the fracture.

Objective Laboratory tests of yeast, with their disadvantages of long identification, complicated operation, and low positive rate, cannot meet the needsof rapid diagnosis and timely treatment.This studyinvestigated the feasibility ofapplying matrix-assisted laser desorption ionization-time of flight mass spectrometry ( MALDI-TOF-MS) in rapid identification and clinical isolationof yeast strains. Methods A total of 120 clinical non-repetitive isolates were collected from clinical culture samples and identified by MALDI-TOF-MS and VITEK 2-Compact/API, respectively.The discordant results were resolved by ITS gene sequencing. Results Of the 120 yeast isolates analyzed, 117 (97.5%) were correctly identified at the species level by MALDI-TOF-MS, 1(0.8%) misidenti-fied, and 2 ( 1.7%) unidentified.ITS gene sequencing of the 3 isolates showed the coincidence rate to be 0( 0/3) for MALDI-TOF-MS and Vitek 2-Compact/API. Conclusion MALDI-TOF-MScan be used as a rapid, accurate, and inexpensive tool for the identification of clinical yeast strains.

Objective: To explore the feasibility with the safety at peri-operative and early post-operative periods for left atrial appendage occlusion in patients with non-valvular atrial ifbrillation (AF).
Methods: A total of 17 non-valvular AF patients with transesophageal echocardiography (TEE) and CAHDS2 evaluation who received left atrial appendage occlusion in our hospital were summarized. The effect and complications during peri-operative and 1 month post-operative periods were analyzed.
Results: All 17 patients had successful operation without severe complications. There were 8 patients having small amount residual shunt by TEE examination, 2 having ecchymosis near the puncture point at peri-operative period and 3 having small amount of hydropericardium by peri-cardio ultrasound examination. At the average of 45 days follow-up study, only 3 patients had small amount residual shunt, no left atrium thrombus and hydropericardium were observed.
Conclusion: Left atrial appendage occlusion has the high success rate, it is safe during peri-operative and early post-operative periods in non-valvular AF patients.