Objective To assess the technical levels of computed tomography (CT) quality control testing capabilities among radiological health technology service institutions in Hubei Province, China. Methods Ten radiological health technology service institutions in Hubei Province were organized to participate in an inter-institutional capability comparison of selected indicators in CT quality control testing with reference to the Specification for testing of quality control in X-ray computed tomography (WS 519—2019). The robust Z-score method was employed to evaluate the results of the capability comparison data from the ten institutions. Results Six institutions achieved a "satisfactory" rating in all assessed indicators, with a satisfaction rate of 60%. Indicators rated as "unsatisfactory" or "questionable" included "positioning light accuracy", "uniformity", "noise", and "high-contrast resolution". Conclusion The CT quality control testing capabilities of some radiological health technology service institutions in Hubei Province require further enhancement. Improved training and education for testing personnel are recommended.

Objective To explore the effectiveness and safety of guiding painless gastroscopic entry with plica aryepiglottica movement as the mark.Methods A total of 200 patients with elective painless gas-troscopic examination from January 2022 to August 2022 were selected,92 males and 108 female,aged 18-60 years old,BMI 18-30 kg/m2 and ASA grade Ⅰ-Ⅲ.The patients were divided into the two groups:the con-trol group (group C) and observation group (group O) by adopting the random number table method,100 ca-ses in each group.The disappearance of eyelash reflex in the group C served as the entry timing of gastrosco-py,while the plica aryepiglottica non-movement under the gastroscopic view in the group O served as the en-try timing of gastroscopy.The bispectral index (BIS) value during gastroscopic operation persistently main-tained 40-60.The main observation indicators were the adverse reactions caused by gastroscopic operation (body movement reactions,bucking,hiccup,laryngeal spasm,etc.),and the secondary observation indicators were:general data of the two groups,SpO2,HR,SBP and DBP values after entering the room (T0),at the en-try time of gastroscopy (T1),3 min after gastroscopic entry (T2),6 min after gastroscopic entry (T3) and at the time of gastroscopic retraction (T4),and the time of medication to gastroscopy,gastroscopic operation time and intraoperative medication supplementation.Results A total of 192 cases were ultimately included,99 cases in the group C and 93 cases in the group O.There was no statistically significant difference in general da-ta between the two groups (P>0.05);compared with the group C,the use amount of cyclophosphamide dur-ing anesthesia induction in the group O was increased (P<0.05).Compared with the group C,the incidence rates of body movement reaction,bucking,hiccup and total adverse reactions in the group O were decreased (P<0.05);SpO2,HR,SBP and DBP at different time points had no statistically significant differences be-tween the two groups (P>0.05).Conclusion Using the glottic movement as the marker to guide the pain-less gastroscopy entry is effective and safe,and could reduce the adverse reactions such as body movement re-action,bucking and hiccup caused by gastroscopic entry.Observing the plica aryepiglottica movement in the gastrocopic entry operation is simple and easy to perform,which could serve an objective gastroscopic entry timing mark and is worth promoting and using in clinic.

This experiment aims to investigate the effects of a dietary supplement of herbal tea resi-due on white feather broilers in the prospectives of growth performance,serum indexes and intesti-nal immune indexes.A total of 280 1-day-old white feather broilers with similar body mass and good health were randomly divided into 4 groups with 5 replicates per group and 14 birds per repli-cate.Group Ⅰ(control group)was fed a basal diet.Groups Ⅱ,Ⅲ and Ⅳ were fed a diet supple-mented with 2％,4％and 6％herbal tea residue powder,respectively.The feeding lasted for 49 days,and was divided into 2 phases from 1 to 21 days of age and 22 to 49 days of age.Blood,tissue and mucosa of the duodenum and jejunum were collected on 21 d and 49 d.Total cholesterol(T-CHO),triglyceride(TG),high density lipoprotein cholesterol(HDL-C),low density lipoprotein cholesterol(LDL-C)and the activities of aspartate aminotransferase(AST)and alanine amin-otransferase(ALT)in the serum were examined.The villus height and crypt depth of the jejunum were observed and measured by morphology.The mRNA expression levels of intestinal interleukin-1β(IL-1β),interleukin-2(IL-2),interleukin-4(IL-4),interleukin-10(IL-10)and tumor necrosis factor-α(TNF-α)were determined by qPCR.The results showed that compared with group Ⅰ,the mass of group Ⅲ on 21 d and 49 d significantly increased(P＜0.05).The average daily feed intake of 22-49 d and 1-49 d significantly increased(P＜0.05).The average daily mass gain of 1-21 d,22-49 d and 1-49 d significantly increased(P＜0.05).In the serum of 21 d,compared with group Ⅰ,T-CHO in group Ⅱ significantly decreased(P＜0.05).TG in groups Ⅱ,m and Ⅳ significantly de-creased(P＜0.05).LDL-C and AST activity in group Ⅳ significantly decreased(P＜0.05).In the serum of 49 d,T-CHO in group Ⅲ,LDL-C in group Ⅳ,HDL-C of groups Ⅲ and Ⅳ significantly increased(P＜0.05),and the ALT activity of these two groups decreased(P＜0.05).AST activity in group Ⅱ significantly decreased(P＜0.05).In the duodenum of 21 d,compared with group Ⅰ,the expressions of TNF-α in group Ⅱ was significantly decreased(P＜0.05).In the duodenum of 49 d,the expression of IL-10 in group Ⅱ was significantly increased(P＜0.05),and the expression of IL-2 in groups Ⅲ and Ⅳ was significantly decreased(P＜0.05).In the jejunum of 49 d,the ex-pression of IL-10 in group Ⅱ was increased(P＜0.05),and the expression of IL-2 in groups Ⅲand Ⅳ was significantly decreased(P＜0.05).In conclusion,dietary herbal tea residue can regulate circulating lipid level and enhance intestinal immunity of white feather broilers without affecting their normal growth performance.This experiment also suggested that the a 2％-4％supplementa-tion of herbal tea residues to white feather broilers was of good effect.

The study adopted muscle injection of pVAX1-SP-GHRH(1-44)expression plasmid and electrostimulation to determine its effects on mouse growth and sow production performance.One hundred and fifty four-week-old C57 BL/6 female mice were randomly divided into 6 groups of 5 replicates each.Muscle single-injection followed by electrostimulation was performed.The con-trol group received an empty plasmid injection(80 μg/kg),while the treatment groups received pVAX1-SP-GHRH(1-44)plasmid injections(20,40,80,120,160 μg/kg).Twenty healthy preg-nant sows were randomly divided into 2 groups,each with 10 sows.Electrostimulation treatment was applied to the semimembranosus muscle of the pregnant sows after a single injection.The con-trol group received physiological saline injection,while the plasmid group received a 2 mg pVAX1-SP-GHRH(1-44)expression plasmid injection.Mouse weight,feed intake,and serum GHRH and IGF-1 levels were measured at days 0,7,14,21,and 28 after injection.Pregnant sows were bled via the tail vein at days 0,14,28,and 42 after injection,and their serum was separated to measure serum GHRH and IGF-1 levels.The birth weight,placental weight,number of piglets born,number of healthy piglets,number of weak piglets,number of deformed piglets,number of stillborn piglets,and number of mummified piglets were recorded at day 14.The mouse study re-sults showed that muscle injection of pVAX1-SP-GHRH(1-44)plasmid followed by electrostim-ulation could promote mouse feeding and increase weight gain(P＜0.05),significantly increase mouse serum GHRH and IGF-1 levels(P＜0.05),and maintain its effects until day 21.The results of the pregnant sow study showed that the average birth weight of the piglets in the plasmid group was significantly increased(P＜0.01),and the placenta weight was significantly increased(P＜0.05).The serum GHRH and IGF-1 concentrations in the plasmid group sows were significantly increased(P＜0.01).The study results showed that muscle injection of pVAX1-SP-GHRH(1-44)expression plasmid followed by electrostimulation could promote mouse feeding and increase weight gain,and also significantly improve the average birth weight and placental weight of the piglets in pregnant sows.

Objective To identify meaningful objective examination methods by analyzing the results of vari-ous objective examinations of children with recurrent vertigo(RVC).Methods Fifty children with RVC(29 in ver-tigo attacking group,21 in vertigo non-attacking group)and 20 children without RVC were selected.All partici-pants underwent a series of relevant objective examinations,the results of each examination were statistically ana-lyzed and the characteristic differences of each examination between the RVC group and the control group were ob-tained.Results ① The abnormal rate of sleep SpO2,high stimulation rate ABR and AHI in the RVC group were significantly higher than those in the control group(P＜0.05).② The abnormal rate of sleep SpO2 and high stimu-lation rate ABR in the vertigo attacking group were higher than those in the vertigo non-attacking group.There was a statistical difference between the two groups(P＜0.05).③ Pure tone audiometry(or conditioned play audiome-try),acoustic immittance,cranial MRI,positional test and vHIT were normal in both RVC group and normal con-trol group.Conclusion Continuous sleep SpO2 and high stimulation rate ABR are correlated with RVC,especially RVC during vertigo attacking.AHI is correlated with RVC,but not with the onset of vertigo.Clinically,continu-ous sleep SpO2 monitoring,PSG and high stimulation rate ABR can be used as auxiliary examinations for the diagno-sis of RVC.

Objective:To explore the relationship between sleep status and the disease in children with recurrent vertigo（RVC） by analyzing the objective sleep condition of children with recurrent vertigo. Methods:According to the diagnostic criteria of RVC, 50 children with RVC and 20 normal controls without RVC were selected. According to the vertigo questionnaire score, the RVC group was divided into mild, moderate and severe groups according to severity. Continuous polysomnography（PSG） was performed for all participants, and SPSS 25.0 statistical software was used to analyze the monitoring results. Results:①There were significant differences in sleep time of each period, total sleep time and sleep efficiency between RVC group and control group（P<0.05）, but there was no significant difference in sleep latency（P>0.05）. The specific manifestations were that the proportion of sleep time in N1 and N2 phases increased, the proportion of sleep time in N3 and REM phases decreased, the total sleep time and sleep efficiency decreased in RVC group. ②The abnormal rate of sleep apnea hypopnea index, that is, the proportion of AHI≥5 times/h and the abnormal rate of lowest blood oxygen saturation in RVC group were higher than those in normal control group. There was significant difference between the two groups（P<0.05）. ③There were significant differences in the proportion of AHI≥5 times/h and lowest SpO2 among mild group, moderate group and severe group（P<0.05）. ④There was no significant correlation between the degree of vertigo and the abnormal rate of AHI in children with RVC, but there was a negative correlation between the degree of vertigo and the abnormal rate of lowest SpO2 in children with RVC. Conclusion:Children with RVC are often accompanied by sleep disorders, clinicians should pay attention to both the symptoms of vertigo and sleep condition in children. Polysomnography is non-invasive and operable, providing a new idea to the auxiliary examination of RVC in children. It is of certain clinical significance for the comprehensive treatment of children with RVC to actively improve vertigo symptoms and pay attention to improving sleep quality.
Humans ; Child ; Polysomnography ; Sleep Apnea, Obstructive/diagnosis* ; Sleep ; Dizziness ; Vertigo/diagnosis*

T cells, including both CD4⁺ and CD8⁺ T cells, play a pivotal role in mediating various inflammation and immune disorders. A long-standing challenge in T cell-based immunotherapy is to precisely inactivate or delete the pathogenic T cells in inflammation and autoimmune diseases, or to selectively expand the immunocompetent T cell in tumor or other immune compromised situations, without inducing global immunosuppression or zealous immune activation respectively. To achieve this, a specific marker is needed to differentiate the pathogenic or immunocompetent T cell among the rests. Indeed, recent progress of immunology strongly suggests that CXC chemokine receptor 6 (CXCR6, CD186) is such a kind of marker. Here, we review the emerging role of CXCR6 as a novel target for immunotherapy and discuss the underlying mechanism. We propose that CXCR6-based immunotherapy will play a significant role in autoimmune, nonalcoholic steatohepatitis (NASH), tumor, coronavirus disease 2019 (COVID-19) and even ageing-related inflammatory infliction.

Objective:To study the risk factors of massive bleeding in patients with acute Stanford type A aortic dissection undergoing moderate hypothermic circulatory arrest repair.Methods:From January 2016 to October 2017, 486 consecutive patients with acute type A aortic dissection were included in the study. All operations were performed with moderate hypothermic circulatory arrest. The basic clinical data of patients were collected retrospectively. Massive bleeding was defined according to definition of Universal Definition of Perioperative Bleeding(UDPB) 4 class and the Blood Conservation Using Antifibrinolytics in a Randomized Trial(BART). Significant variables in univariate analysis were included in multivariate logistic regression analysis. Results:Thirty-four patients(7.00%) died in hospital. A total of one hundred and eighty-seven patients(38.48%) fulfilled criteria of the definition of BART massive bleeding. Forty-five patients(9.26%), 8 patients(1.65%), 114 patients(23.46%), 147 patients(30.25%) and 172 patients(35.39%) were in grade 0, grade 1, grade 2 and grade 4, respectively. With BART as the end point, the result of multivariate logistic regression showed that female gender( OR=3.32, P<0.001), anemia( OR=2.24, P=0.04), clearance creatine≤85 ml/min( OR=1.93, P=0.01), D-dimer level(every 500 ng/ml increase, OR=1.02, P=0.003), cardiopulmonary bypass(CPB) time( OR=1.01, P<0.001), total arch replacement(TAR, OR=2.40, P=0.02) were independent risk factors for massive bleeding, and the time from onset to operation( OR=0.86, P=0.01) was protective factor. With UDPB 4 class as the end point, multivariate logistic regression showed that creatinine clearance≤85 ml/min( OR=2.05, P=0.001), CPB time( OR=1.01, P=0.04) were independent risk factors for massive bleeding. The time from anset to operation( OR=0.85, P=0.002) and Bentall procedure( OR=0.65, P=0.04) were the protective factors. Conclusion:Massive bleeding was more common in acute Stanford type A aortic dissection. Female gender, poor preoperative renal function, high D-dimer level, early time accepting surgical operation and long CPB were independent risk factors. For high-risk patients, simple and effective surgical methods should be taken to reduce the risk of bleeding.