Objective:To investigate the immune response characteristics of helper T cells Th1, Th2, Th17 and their related cytokines in acute, chronic and recovery phases after Brucella infection. Methods:Using prospective study, a total of 130 patients with brucellosis in the First Affiliated Hospital of Medical College of Shihezi University from January 2017 to December 2018 were selected as the research subjects, including acute phase group (49 cases), chronic phase group (44 cases), recovery phase group (37 cases), and 30 cases of healthy physical examination during the same period were included in the control group. The peripheral blood samples of all subjects were collected, and flow cytometry was used to detect Th1, Th2 and Th17 cells in the peripheral blood; the cytometry bead array (CBA) was used to detect the serum cytokines interferon-γ (IFN-γ), interleukin (IL)-4 and IL-17A expression levels.Results:In the control, acute phase, chronic phase and recovery phase groups, the differences of the expression ratios of Th1 [(1.03 ± 0.85)%, (5.46 ± 3.54)%, (4.48 ± 2.26)%, (2.29 ± 2.25)%], Th2 [(4.72 ± 2.36)%, (7.00 ± 3.14)%, (13.99 ± 9.14)%, (5.89 ± 4.69)%], and Th17 cells [(2.09 ± 0.48)%, (3.04 ± 2.17)%, (3.61 ± 2.67)%, (2.74 ± 2.58)%] were statistically significant ( F = 20.95, 21.15, 2.90, P < 0.05). Compared with the control group, the expressions ratio of Th1, Th2, Th17 cells in acute and chronic phase groups and Th1 cells in recovery phase group were significantly higher ( P < 0.05); compared with the recovery phase group, the expressions ratio of Th1, Th2 and Th17 cells in acute and chronic phase groups were significantly higher, but the expression ratio of Th2 cells in acute phase group was lower than that in chronic phase group ( P < 0.05). The expression levels of IFN-γ, IL-4, and IL-17A in serum of control group, acute phase, chronic phase and recovery phase groups were significantly different ( F = 7.79, 15.85, 7.55, P < 0.05); compared with the control group, the expression levels of IFN-γ, IL-4, IL-17A in acute and chronic phase groups and IFN-γ, IL-4 in recovery phase group were significantly higher ( P < 0.05); compared with the recovery phase group, the expression levels of IFN-γ, IL-4, IL-17A in acute phase group and IFN-γ, IL-17A in chronic phase group were significantly higher ( P < 0.05). The expression ratio of Th1 cells in recovery phase patients who finished treatment for less than 12 months was significantly higher than that of recovery phase patients who finished treatment for ≥12 months ( t = 2.26, P < 0.05). Conclusions:After patients are infected with Brucella, Th1 cell immunity is dominant in acute phase, Th2 cell immunity is dominant in chronic phase, and there is no significant difference in the response of Th17 cell immunity between acute and chronic phases. The immune function of patients in the recovery phase may still be abnormal when the treatment time is less than 12 months. Some clinically cured patients in the recovery phase still have a relatively high proportion of Th1 cells, suggesting that the patient's immune function has not fully recovered.

Objective:To establish a disease risk prediction model for the newborn screening system of inherited metabolic diseases by artificial intelligence technology.Methods:This was a retrospectively study. Newborn screening data ( n=5 907 547) from February 2010 to May 2019 from 31 hospitals in China and verified data ( n=3 028) from 34 hospitals of the same period were collected to establish the artificial intelligence model for the prediction of inherited metabolic diseases in neonates. The validity of the artificial intelligence disease risk prediction model was verified by 360 814 newborns ' screening data from January 2018 to September 2018 through a single-blind experiment. The effectiveness of the artificial intelligence disease risk prediction model was verified by comparing the detection rate of clinically confirmed cases, the positive rate of initial screening and the positive predictive value between the clinicians and the artificial intelligence prediction model of inherited metabolic diseases. Results:A total of 3 665 697 newborns ' screening data were collected including 3 019 cases ' positive data to establish the 16 artificial intelligence models for 32 inherited metabolic diseases. The single-blind experiment ( n=360 814) showed that 45 clinically diagnosed infants were detected by both artificial intelligence model and clinicians. A total of 2 684 cases were positive in tandem mass spectrometry screening and 1 694 cases were with high risk in artificial intelligence prediction model of inherited metabolic diseases, with the positive rates of tandem 0.74% (2 684/360 814)and 0.46% (1 694/360 814), respectively. Compared to clinicians, the positive rate of newborns was reduced by 36.89% (990/2 684) after the application of the artificial intelligence model, and the positive predictive values of clinicians and artificial intelligence prediction model of inherited metabolic diseases were 1.68% (45/2 684) and 2.66% (45/1 694) respectively. Conclusion:An accurate, fast, and the lower false positive rate auxiliary diagnosis system for neonatal inherited metabolic diseases by artificial intelligence technology has been established, which may have an important clinical value.

The coronavirus disease 2019 (COVID-19) has caused a global pandemic. All people including children are generally susceptible to COVID-19, but the condition is relatively mild for children. The diagnosis of COVID-19 is largely based on the epidemiological evidence and clinical manifestations, and confirmed by positive detection of virus nucleic acid in respiratory samples. The main symptoms of COVID-19 in children are fever and cough; the total number of white blood cell count is usually normal or decreased; the chest imaging is characterized by interstitial pneumonia, which is similar to other respiratory virus infections and infections. Early identification, early isolation, early diagnosis and early treatment are important for clinical management. The treatment of mild or moderate type of child COVID-19 is mainly symptomatic. For severe and critical ill cases, the oxygen therapy, antiviral drugs, antibacterial drugs, glucocorticoids, mechanical ventilation or even extracorporeal membrane oxygenation (ECMO) may be adopted, and the treatment plan should be adjusted timely through multi-disciplinary cooperation.
Betacoronavirus ; isolation & purification ; Child ; Coronavirus Infections ; diagnosis ; pathology ; therapy ; Humans ; Pandemics ; Pneumonia, Viral ; diagnosis ; diagnostic imaging ; etiology ; pathology ; therapy

Betacoronavirus ; isolation & purification ; Child ; Clinical Laboratory Techniques ; Coronavirus Infections ; diagnosis ; drug therapy ; therapy ; Humans ; Pneumonia, Viral ; diagnosis ; therapy

Objective: This study takes hydroxypropyl-β-cyclodextrin (HP-β-CD) as the inclusion materials to optimize the preparation technic of tea tree oil (TTO) and evaluate its pharmaceutical performance. Methods: Take the production rate of HP-β-CD tea tree oil inclusion and entrapment rate as the evaluation index, taking the orthogonal test method to optimize the production technic of tea tree oil (HP-β-CD inclusion and using infrared (IR), differential thermal scanning (DSC) method to characterize the inclusion compound to analyze the stability of TTO-HP-β-CD. Results: The best technic to produce HP-β-CD tea tree oil is as follow: the ratio of TTO and HP-β-CD should be equal to 1/10, at 40 ℃, within 1 h. The average drug loading shoud be 9.25% ± 3.25%. The IR, DSC characterization results showed that the characteristic peak of tea tree oil disappeared after the microspheres, which indicated the HP-β-CD encapsulated the tea tree oil with good compatibility. In 80 ℃ water bath, the TTO-HP-β-CD was stable with the retention rate 40% after 8 h, the retention rate was 4.32 times than that of the unwrapped tea tree oil. Conclusions The HP-β-CD tea tree oil obviously has higher rate of inclusion and stability. Therefore, it’s worth to promoting and being used in the pharmacy preparations and cosmetics field.

Objective: To investigate the clinical features of brucellosis with thrombocytopenia. Methods: The clinical data of patients with brucellosis complicated with thrombocytopenia (platelet count < 100 × 10⁹/L) diagnosed by the Department of Infection Disease, the First Affiliated Hospital of Xinjiang Medical University from January 2012 to December 2018 were collected retrospectively, and the demographic characteristics, clinical characteristics, laboratory examinations, treatment and prognosis of the patients were analyzed. Results: All the 21 patients were male and their age was (47.3 ± 12.2) years old, including 3 Uygur, 14 Han and 4 Kazak. Their occupation was dominated by farmers and herdsmen, a total of 16 patients; 11 patients had a history of close contact with cattle and sheep, 5 patients were engaged in slaughter and wool processing industries, and 5 patients were infected for unknown reason. All the 21 patients had fever, hyperhidrosis in 17 patients, fatigue in 16 patients, joint and muscle pain in 7 patients, and decreased body mass in 5 patients. Sheep Brucella blood culture were positive in 12 patients; serum tube agglutination test was positive in 16 patients, titer was 1∶200-1∶800; white blood cell count was normal [(4-10) × 10⁹/L] in 3 patients, white blood cell count reduced in 18 patients. Sixteen patients were treated by orally taking rifampin capsules combined with doxycycline tablets, 3 patients were treated by orally taking baifule tablets combined with doxycycline tablets, and 2 patients were treated by orally taking baifule tablets combined with rifampin capsules; three patients with platelet count < 10 × 10⁹/L were treated with glucocorticoid, gamma globulin and platelet transfusion. After 6 months of follow-up after treatment, 19 patients returned to normal platelet levels, and 2 patients had slightly lower platelet levels. Conclusions The main clinical features of brucellosis with thrombocytopenia are fever, hyperhidrosis, fatigue, joint and muscle pain, decreased body mass, and reduced white blood cell count. Their prognosis is better after treatment.

OBJECTIVETo compare the efficacy of percutaneous atrial septal defect (ASD) closure guided by transesophageal echocardiography (TEE) or guided by fluoroscopy in pediatric patients.

METHODSMedical records of patients who underwent percutaneous ASD closure in the Children's Hospital, Zhejiang University School of Medicine from January 2017 to March 2018 were reviewed. There were 120 patients whose procedures were guided by TEE (TEE group), and 125 patients who had their procedures guided by fluoroscopy (fluoroscopy group). The performance of surgery, efficacy and postoperative complications were compared between two groups.

RESULTSPercutaneous ASD closure was successful in all patients. The operation time was shorter in the TEE group than that in fluoroscopy group[(20±14) min vs. (29±11) min, =-7.939, <0.05]. The size of the defect was larger in the TEE group than that of fluoroscopy group[(11±4) mm vs. (9±4) mm, =2.512, <0.05], but there was no significant difference in the sizes of occluder and occluder sheath between two groups (all >0.05). No residual shunt, occluder shedding or displacement, severe arrhythmia or pericardial effusion were observed in either group. The incidence rates of fever, cough and diarrhea were not statistically different between two groups (all >0.05).

CONCLUSIONSThere was no significant difference in the outcome of percutaneous ASD closure guided by TEE or by fluoroscopy, but the procedure guided by TEE may reduce the operation time and can evaluate the size of ASD more accurately without involving radiation exposure, contrast agents use and large digital subtraction equipment.

Coronary Vessel Anomalies ; therapy ; Coronary Vessels ; Humans ; Percutaneous Coronary Intervention

Objective:In this study,we examined the HLA-DPB1 alleles in patients with tuberculosis,and health individuals attempt to investigate the association between the polymorphism of HLA-DPB1 gene and pulmonary tuberculosis in Han population in Shihezi area in Xinjiang uygur autonomous region of China.Methods:High-resolution typing of DPB1 was performed by the sequence-based typing ( SBT) method using the SBT-HLA-DPB1 generic DNA typing kit.Results:In the controls ,17 HLA-DPB1 alleles were ob-served,the HLA DPB1*0501 (28.1%) and HLA DPB1*0201(27.6%) frequency was significantly higher than other sites ,the first and second respectively.The frequency of HLA-DPB1* 0201 was observed significantly increased in patient group compared with control group ( P<0.05 );the frequency of HLA-DPB1* 0501 was observed significantly decreased in patient group compared with control group ( P<0.05 ).Conclusion: The gene frequencies of HLA-DPB1 in Xinjiang Shihezi Han population are roughly in consistence with other northern Chinese Han population;the HLA-DPB1*0201 may be the protective factor to pulmonary tuberculosis , and HLA-DPB1*0501 may be susceptible to pulmonary tuberculosis in Han population from the Xinjiang uygur autonomous region of China.

Objective: To compare the efifcacy and safety of circumferential pulmonary vein antecourt isolation (CPVAI) ablation and stepwise linear (SL) ablation in treating the patients with atrial ifbrillation (AF) Methods: A total of 136 AF patients with catheter ablation under EnSite 3000 guidance in our hospital were retrospectively summarized. The patients included 93 paroxysmal AF and 43 persistent AF and divided into 4 groups. Paroxysmal AF with CPVAI ablation,n=45, Paroxysmal AF with SL ablation,n=48 and persistent AF with CPVAI ablation, n=18, persistent AF with SL ablation,n=25. The differences of left atrium diameter, ablation time, X-ray exposure time, the success rate and complication were compared among different groups. Results: For 12 months follow-up study, the success rate and complication were similar between 2 ablation methods for treating both Paroxysmal AF and persistent AF patients. For Paroxysmal AF patients, both ablation methods could effectively reduce left atrium diameter,P<0.01. The SL ablation had less procedural time than CPVAI ablation,P<0.01, while the X-ray exposure time was similar between 2 ablation methods. Conclusion: Both CPVAI and SL ablation methods were effective and safe for treating AF patients.