Aged ; Aged, 80 and over ; Antibodies, Bacterial ; blood ; Coal Mining ; Humans ; Male ; Middle Aged ; Mycobacterium tuberculosis ; immunology ; Pneumoconiosis ; complications ; Sensitivity and Specificity ; Tuberculosis, Pulmonary ; complications ; diagnosis

Objective The experiment was designed to observe the effect of inhaled arsenic trioxide(As2O3)and in combination with inhaled moxa leaf oil on eosinophils(EOS)and lung tissue's morphology in asthmatic guinea pigs, and to explore its mechanism of relieving wheezing. Methods The ovalbumin(OVA)-induced asthmatic guinea pig model was established. Sixty guinea pigs were randomly divided into As2O3 atomization inhalation group B1 As2O3 low dose group:2.0 mg/(kg·d), B2 As2O3 high dose group:4.0 mg/(kg·d), combined treatment group C1 low dose group:2.0 mg/(kg·d)+moxa leaf oil 0.05 ml, C2 high dose group: 4.0 mg/(kg·d)+moxa leaf oil 0.10 ml, saline aerosol inhalation group(group A) asthma model group)and normal control group(group D)according to random permutation table method. After 7 days medicated, the EOS in bronchoalveolar lavage fluid(BALF)were compared. Guinea pig lung, heart, liver and kidney pathological specimens were prepared and the change of the lung tissue's inflammation and heart, liver and kidney tissue were investigated. Lung tissue’s electron microscopy specimens were prepared and the apoptosis of acidophilic cells and repair of alveolar epithelial cells were observed. Results Compared with asthma model group's EOS number[(58.08±19.01)×105], the difference in As2O3 low dose group、As2O3 high dose group、combined treatment low dose group、combined treatment high dose group and normal control group[(26.37±1.12)×105, (11.50±1.61)×105, (14.16±4.88)×105, (5.03±1.66)×105 and(0.35±0.16)×105, respectively] were statistically significant(P<0.01); there was statistical difference between As2O3 low dose group and As2O3 high dose group(P<0.01);There was statistical difference between As2O3 low dose group and combined treatment low dose group(P<0.01);There was statistical difference between As2O3 high dose group and combined treatment high dose group(P<0.05). Compared with combined treatment high dose group, difference in As2O3 low dose group、As2O3 high dose group and combined treatment low dose group was statistically significant(P<0.05). The difference in B1, B2, C1, C2 and D group was statistically significant compared with group A (P<0.01). The difference in B1 and B2, B1 and C1 group was statistically significant (P<0.01). The difference between B2 and C2 group was statistically significant(P<0.05). The difference in C2 group was statistically significant compared with group B1, B2 and C1(P<0.05). Conclusion EOS abnormal apoptosis was an important pathogenesis of bronchial asthma. The mechanism of arsenic trioxide anti-asthma was that arsenic trioxide could reduce acidophil infiltration and promote acidophilic cell apoptosis. The mechanism of moxa leaf oil anti-asthma was it could reduce acidophil infiltration. Smaller doses of the combination of inhaled As2O3 and moxa leaf oil was safe and effective to achieve the effect of relieving wheezing and the combined use had synergy.

Objective To analyze clinical manifestation and identify prognostic factors in patients with acute respiratory distress syndrome (ARDS) caused by cytomegalovirus (CMV) pneumonia after kidney transplantation.Methods Fifty five kidney transplant recipients' data were analyzed in a case-control study of patients with a primary discharge diagnosis of ARDS caused by CMV pneumonia.Results The mortality of ARDS after kidney transplantation was 56.4%;when association with mechanical ventilation,it was 72.5%.In multivariate Logistic regression analysis,numbers of complications (odds ratioOR2.60,95% confidence intervalCI1.00~6.76),severity of diffuse infiltrates in chest X-ray (OR 11.83,CI 1.14~123.07),mechanical ventilation (OR 11.83,CI 1.14~123.07) were independent risk factors to death.Conclusion Even in modern era,kidney transplant recipients with ARDS after kidney transplantation are still at high risk for death.Numbers of complications,severity of diffuse infiltrates in chest X-ray,mechanical ventilation are associated with poor outcomes.

Objective To investigate effective methodology for preventing infectious diseases from spreading within general hospitals at all levels. Methods Six hospitals at three levels in the city were made into two groups and investigated for their treatment of infectious diseases. The group of A1, A2 and A3 hospitals employs the five pre-triage, while the group of B2, B2 and B3 employs the routine pretriage. Results Comparison of undetected infectious cases between group A1, A2, A3 and group B1,B2,B3 identified significant difference with x2 testing, P＜0. 005. Conclusion Five pre-triage method can screen, identify and pinpoint confirmed or suspected infectious disease patients from all outpatients in the first time, thus preventing and controlling the nosocornial transmission of epidemic or even an outbreak of nosocomial infection effectively.

A suitable ultra-high performance liquid chromatography coupled with tandem mass spectrometry (UPLC-MS/MS) method was developed for the determination of 11 mycotoxins with isotope internal standard in malt. The mycotoxins in malt were extracted and purified by one-step ultrasonic extraction procedure using acetonitrile/water/acetic acid (80 : 19 : 1), and then detected and confirmed by UPLC-MS/MS, and quantified by isotope labeled AFB1 ([13C17]-AFB1) and ZEN ([13C18]-ZEN) internal standards. Rapid separation of the 11 mycotoxins was successfully achieved on a Phenomenex Kinetex C18 column (100 mm x 2.1 mm, 2.6 μm) with gradient elution using the mobile phase of methanol containing 0.1% formic acid and 2 mmol x L(-1) ammonium acetate in water. Simultaneous acquisition was performed in multiple reaction monitoring (MRM) mode with electrospray ionization (ESI) source operated in both positive and negative ionization modes. The established method provided a good linearity for the 11 mycotoxins within their respective linear ranges with correlation coefficients all higher than 0.999 1. The average recoveries ranged from 75.0% to 117.0% with relative standard deviations (RSDs) below 5.1%. The limits of detection (LODs) and quantitation (LOQs) ranged from 0.05 to 30 μg x kg(-1) and 0.15 to 87.5 μg x kg(-1), respectively, which were below the maximum residue levels (MRLs) set by the European Union. Twenty malt samples were analyzed and nine samples were detected with mycotoxins, which were confirmed according to the same fragment ions found in positive samples and the standards at the same retention time. This study has demonstrated that the one-step extraction procedure of mycotoxins from complex matrices coupled to UPLC-MS/MS method is simple, quick, accurate and sensitive for quantitative and qualitative analysis of multiple mycotoxins in malt.
Chromatography, High Pressure Liquid ; Fermentation ; Hordeum ; chemistry ; Limit of Detection ; Mycotoxins ; analysis ; isolation & purification ; Tandem Mass Spectrometry

OBJECTIVE:To prepare a compound resorcinol liniment(RSA)for treating acne METHODS:To prepare RSA and observe its stability RESULTS:The quality of RSA was stable in the term of validity and its clinical effect rate amounted to 97 3% CONCLUSION:RSA is easy to prepare,the therapeutic effect is satisfactory,and its stability is good

Objective:To analyze the clinical and gene mutation characteristics of congenital disorder of glycosylation (CDG) caused by compound heterozygous mutation of the COG6 gene ( COG6-CDG). Methods:This study retrospectively analyzed the clinical data and genetic test results of a patient with COG6-CDG in Bayi Children's Hospital, the Seventh Affiliated Medical Center of Chinese PLA General Hospital, in August 2019. Literature was retrieved with keywords including COG6, COG6-CDG, congenital disorders of glycosylation typeⅡL and congenital disorders of glycosylationⅡL in China National Knowledge Infrastructure, Wanfang Database, VIP Database, PubMed, and Web of Science Database from the establishment to July 2020, to summarize the clinical and genetic characteristics of COG6-CDG. Results:(1) Case report: The 59-day-old baby boy, with a gestational age of 27 +5 weeks and birth weight of 1 180 g, presented with multi-system involvement on admission, including unidentified progressive hepatosplenomegaly with jaundice and ascites, persistent thrombocytopenia, microcephaly, hypotonia, hypohidrosis, hyperkeratosis, and recurrent hyperthermia, infection, and hypoglycemia, as well as dysfunctions of the heart, gastrointestinal tract, lungs, kidneys, ocular fundus, and the coagulation system. Despite given ventilator-assisted ventilation, anti-infection therapy, abdominal puncture and drainage, and blood transfusion, the patient still had an aggravated condition and eventually died of multiple organ failures 192 d after birth. Genetic analysis showed that the nuclear family carried compound heterozygous mutations in the COG6 gene (NM_020751.2), including missense mutations of c.662C>T(p.T221M) in exon 7 and c.443T>C(p.I148T) in exon 5, which were both novel mutations and originated from the mother and father, respectively. (2) Literature review: Eight related papers were retrieved, including 20 cases. The main manifestations were various degrees of nervous system abnormalities and growth retardation, complicated by abnormalities of the liver, heart, gastrointestinal tract, blood, immunity, teeth, and bones. All the reported cases suffered from mental and growth retardation, and nine deaths were reported. A total of 11 COG6 gene mutations were identified, and most of them were c.1167-24A>G splicing mutations in a deep intron (seven cases), followed by c.1646G>T (four cases) and c.511C>T (three cases). Conclusions:COG6-CDG commonly manifests as multi-system and multi-organ dysfunctions with poor prognosis. Gene detection is conducive to the accurate diagnosis of COG6-CDG. Our case carries compound heterozygous mutations of c.662C>T(p.T221M) and c.443T>C(p.I148T), which are unreported novel mutations.

The PET tracer 5-([11C]methyloxy)-L-tryptophan (5-(11)CMTP) was prepared by nucleophilic fluorination and alkylation reaction via a two-step procedure in order to develop specific tumor probe. The biodistribution and microPET imaging of 5-(11)CMTP were executed. The results unveiled that the overall radiochemical yield with no decay correction was (14.6 ±7.2) %, the radiochemical purity was more than 95% and high uptake and long retention time of 5-(11)CMTP in liver, kidney and blood were observed but low uptake in brain and muscle were found, furthermore, high uptake of 5-(11)CMTP in tumor tissue was observed. It seems that 5-(11)CMTP will be a potential amino acid tracer for tumors imaging with PET.
Amino Acids ; Animals ; Neoplasms ; diagnostic imaging ; Positron-Emission Tomography ; Radioactive Tracers ; Tissue Distribution ; Tryptophan ; analogs & derivatives

Objective To investigate the growth and exocrine function of BM-MSC derived from PBC patients.Methods To compare the growth patterns and cytokines secretions between PBC patients and healthy controls by student's t test.Results ① There was no difference in growth profile and speed between PBC patients and healthy controls.② The level of TGF-β1 was much lower in the supernatant of BM-MS from OBC patients than health controls [(2.6±1.9)vs (8.2±6.7)ng/ml,t=-3.641,P=0.001].There were no other differences between two groups' BM-MSC.③ The super natant concentration of interlukin-10 of the third BM-MSC subculture from healthy controls was lower than that of the primary subculture [(18.5±5.0) vs (12.4±3.1) pg/ml,t=2.368,P=0.045],and that of hepatic growth factor from the second subcuhure was higher than the primary subculture [(0.21±0.07) vs (0.35±0.08) ng/ml,t=-2.874,P=0.021].There were seldom discrepancies in other cytokines between different generations of BM-MSC.Conclusion BM-MSC from PBC patients may have almost the similar characters in growth pattern and cytokines secretion as,except the TGF-β1,which was much lower than those from healthy controls.The second subculture of BM-MSC might be more suitable for the treatment to patients with PBC.

Objective To study the relationship between the development of auditory and speech in children with hearing loss after hearing aid fitting and discuss the development of speech with the ability of auditory in children at different stages of evaluation, with different degrees of hearing loss and different ages respectively.Methods A total of 19 children (14 boys and 5 girls) with hearing loss participated in this study.The age at hearing aid fitting ranged from 3 to 8 years old with a mean of 5.42±1.86 years old.According to their hearing levels, the children in this study were divided into two groups: the moderate hearing loss group (n=10) and the severe group (n=9).According to their ages at hearing aid fitting, all children in this study were divided into two groups: the less than or equal to six years old (n=11) and greater than six years old (n=8).MAIS and MUSS were used to evaluate their abilities of auditory and speech at pre-fitting, 1, 3, 6, 9 and 12 months after hearing aids were worn respectively.A linear and regression analysis was done in the statistic procedure.Results There was a significant correlation between the scores of MAIS and MUSS (R=0.774,P<0.05).There was also a significant correlation between the scores of MAIS and MUSS for the different evaluating stages respectively.The correlations were pre-fitting (R=0.710,P<0.05), 1 month after hearing aid fitting (R=0.774,P<0.05), 3 months after hearing aid fitting (R=0.814,P<0.05), 6 months after hearing aid fitting (R=0.819,P<0.05), 9 months after hearing aid fitting (R=0.707,P<0.05), 12 months after hearing aid fitting (R=0.649,P<0.05).There was also a significant correlation between the scores of MAIS and MUSS for MAIS (items 3~6) (Sound awareness) and MAIS (items 7~10) (Sound understanding).The correlations for MAIS (items 3~6) were (R=0.768,P<0.05), and for MAIS (items 7~10) (Sound understanding) (R=0.794,P<0.05).There was also a significant correlation between the scores of MAIS and MUSS for different group of ages.The correlations for the group of <6years old were (R=0.808,P<0.05), and for the group of the ≥6 years old (R=0.775,P<0.05).There was also a significant correlation between the scores of MAIS and MUSS for different groups of hearing loss levels.The correlation for the group of moderate hearing loss was (R=0.771,P<0.05), and the group of severe hearing loss (R=0.787,P<0.05).Conclusion The development of auditory ability is closely related to the speech ability.The speech abilities increase with the improvement of auditory abilities.The less severe the hearing loss is, the longer the use of hearing aids, the younger the children are, the better the speech ability improved with auditory ability development after hearing aid fitting.