A multicenter clinical study of the impact of COVID-19 pandemic on hospitalization of children with bronchiolitis / 国际儿科学杂志

Objective:In order to explore the impact of corona virus disease 2019(COVID-19)on the hospitalization of children with bronchiolitis and to improve clinicians′ understanding of the characteristics of bronchiolitis during the COVID-19 epidemic.Methods:This was a multicenter clinical study, and the data have been collected from 23 children′s medical centers in China.All the clinical data were retrospectively collected from children with bronchiolitis who were hospitalized at each study center from January 1, 2019 to December 31, 2021.The results included gender, age at hospitalization, length of stay, respiratory syncytial virus(RSV) test results, severity rating, ICU treatment, and the total number of children hospitalized with respiratory tract infection during the same period.The clinical data of children with bronchiolitis in 2019 before COVID-19 epidemic and in 2020、2021 during COVID-19 epidemic were statistically analyzed and compared.Results:According to a summary of data provided by 23 children′s medical centers, there were 4 909 cases of bronchiolitis in 2019, 2 654 cases in 2020, and 3 500 cases in 2021.Compared with 2019, the number of bronchiolitis cases decreased by 45.94% in 2020 and 28.70% in 2021.In 2019, 2020 and 2021, there were no significant differences in gender ratio, age, and duration of hospitalization.Compared with 2019, the ratio of bronchiolitis to the total number of hospitalizations for respiratory tract infection decreased significantly in 2020 and 2021( χ2=12.762, P<0.05; χ2=84.845, P<0.05).The proportion of moderate to severe bronchiolitis cases in both 2020 and 2021 was lower than that in 2019, and the difference was statistically significant ( χ2=4.054, P<0.05; χ2=8.109, P<0.05).There was no statistically significant difference in the proportion of bronchiolitis cases requiring ICU treatment between 2019, 2020, and 2021 ( χ2=1.914, P>0.05).In 2019, a total of 52.60%(2 582/4 909) of children with bronchiolitis underwent RSV pathogen testing, and among them, there were 708 cases with RSV positive, accounting for 28.00%.In 2020, 54.14%(1 437/2 654) of children with bronchiolitis underwent RSV pathogen testing, and there were 403 cases with RSV positive, accounting for 28.04%.In 2021, 66.80%(2 238/3 500) of children with bronchiolitis underwent RSV pathogen testing, and there were 935 cases with RSV positive, accounting for 41.78%.Compared with 2019 and 2020, the RSV positive rate in 2021 showed a significant increase( χ2=99.673, P<0.05; χ2=71.292, P<0.05). Conclusion:During the COVID-19 epidemic, the implementation of epidemic prevention and control measures reduced the hospitalization rate and severity of bronchiolitis, but did not reduce the positive rate of RSV detection.

Analysis of the cognition of medical staff on scientific research ethics and its influencing factors: A case study of a 3A-grade general hospital in Fujian Province / 中华医学科研管理杂志

Objective:To explore the status quo and influencing factors of scientific research ethics cognition of medical staff in 3A-grade hospitals in Fuzhou, and to put forward suggestions for strengthening the construction of scientific research ethics in hospitals.Methods:A questionnaire survey was conducted using a self-designed questionnaire, and the data were statistically analyzed using SPSS 25.0 software.Results:Among the 478 respondents, 184 (38.49%) did not participate in ethics training, 123 (25.73%) were not aware of the organization of their hospital ethics committee, and 47 (9.83%) thought that carrying out ethics review was beneficial to patients but not to scientific research. Respondents with higher education, previous experience with ethics application review, who would consider relevant research ethics issues during clinical study protocol design and development, and who believed that ethical review of medical research would benefit both patients and research had a better overall cognition of research ethics ( P<0.05). Conclusions:Medical staff's cognition of various aspects of scientific research ethics is relatively weak. Hospitals should take multiple initiatives to improve the efficiency of ethical training, optimize the ethical review mechanism, and strengthen the construction of scientific research ethics.

Thalassemia screening and genotyping in Southwest Guizhou Autonomous Prefecture of Guizhou Province / 中华地方病学杂志

Objective:To analyze the thalassemia screening and genotyping in Southwest Guizhou Autonomous Prefecture (referred it as Qianxinan Prefecture), this essay provides the theoretical reference for clinical diagnosis of thalassemia and suspicious cases.Methods:The pregnant women, spouses and neonates who were screened for thalassemia gene in Qian Xi Nan People's Hospital from January 2016 to December 2020 were selected as the research subjects, and peripheral blood or umbilical cord blood samples were collected to extract DNA. The gap-polymerase chain reaction (Gap-PCR) and next-generation sequencing (NGS) technology were used to screen thalassemia, and ArcMap 10.8 software was adopted to map the local spatial distribution of thalassemia based on the screening data.Results:A total of 67 185 cases of people from various regions in Qianxinan Prefecture were screened, and 8 202 cases of thalassemia gene carriers were detected, with a total detection rate of 12.21%. Among them, 5 660 cases of α-thalassemia, with a detection rate of 8.42%; 2 132 cases of β-thalassemia, with a detection rate of 3.17%; 410 cases of αβ complex thalassemia, with a detection rate of 0.61%. In the detection of thalassemia genes, 27 genotypes of α-thalassemia were detected, mainly αα/-α 3.7, accounting for 41.13% (2 328/5 660); 33 genotypes of β-thalassemia were detected, mainly β CD17(A>T)/β A, accounting for 44.09% (940/2 132); 55 genotypes of αβ complex thalassemia were detected, and αα/-α 3.7 complexed β CD17(A>T)/β A dominated, accounting for 21.22% (87/410). There were high incidence areas in the spatial distribution of thalassemia, which were Wangmo County and Ceheng County, and the detection rate was 26.76% (1 438/5 374), 24.39% (1 314/5 387), respectively. Conclusions:The detection rate of thalassemia gene in Qianxinan Prefecture is relatively high, mainly αα/-α 3.7 genotype of α-thalassemia. Wangmo County and Ceheng County are high-incidence areas of thalassemia, and screening efforts should be continued.

Histopathological and MRI characteristics of facial unidentified filling objects / 中华医学美学美容杂志

Objective:Unidentified filling objects (UFO) can cause adverse results including infections, overfilling, asymmetry, foreign body granulomas, dislocation or psychological panic. To remove UFO accurately, it is important to locate and identify the injected substances preoperatively. This study investigated the viability of using MRI to correctly locate and identify injected substances by relating MRI to gross and pathological microscopic examination.Methods:Eighty-two facial UFO patients from 2013 to 2017 were studied by the experts of the Department of Image, Xinhua Hospital of Dalian University. Five of the patients were male and seventy-seven were female. The age ranged from 17 to 58 years with average 29.4 years. They came to our hospital for removal of UFO after they had facial injective fillers in the illegal medial offices. The injected sites involved in the forehead, temple, malar, cheek, nose, nasolabial folds, and chin. All the patients＇ faces were examined with MRI preoperatively, using T1W, T2W and fat-suppressed sequences. Based on the guides of MRI, UFOs were removed with their capsules by open approach. Samples were recorded with digital pictures and then were fixed in 10% formalin solution for microscopic examination of HE stained slices.Results:Based on MRI, gross and microscopic examination, UFO were classified into 3 types, gel-like fillers, solid particles, and growth factors. Gel-like fillers appeared strongly hyperintense on T2 W and STIR sequences and hypointense on T1 W sequences. Grossly, they looked like gruel covered by altered soft tissue. Under the light microscope, many pieces of blue-stained material were dispersed in subcutaneous tissue infiltrated with a large number of mononuclear cells and foreign-body giant cells. Solid particles had low to intermediate signal intensity on T1 W and T2 W images. Grossly, they were like sand merging in soft tissue. The biopsy showed crowed bubbles surrounded by tissue filled with a large number of mononuclear cells and foreign-body giant cells. For growth factors affected tissue, it was hard to differentiate between normal and abnormal on MRI. The affected tissue appeared as somehow hypointense on T1 W sequences and hyperintense on T2 W fat suppressed sequences. During the operation, the affected region was easy bleeding and full of fibrofatty tissue. Under the microscope, there were increased small blood vessels and collagens.Conclusions:Based on MRI, gross and microscopic examination, UFO can be classified into 3 types, gel-like fillers, solid particles, and growth factors. MRI is very important for doctors to assess the patient＇s conditions and make the plan of operation. MRI is also useful for doctors to locate UFO and understand the relationship between UFO and their nearby organs.

Impact of mild cognitive impairment on elderly well-being: the mediating effect of self-efficacy / 中国实用护理杂志

Objective:To explore the effect of mild cognitive impairment on the subjective well-being of the elderly and the mediating role of self-efficacy in it. To provide an effective basis for health management and clinical intervention in the elderly with mild cognitive impairment.Methods:A total of 164 patients with mild cognitive impairment from December 2018 to June 2019 were surveyed by the General Self-efficacy Scale, the Montreal Cognitive Assessment Scale, and the Memorial University of Newfoundland Scale of Happiness Scale.Results:The overall score of self-efficacy was 21.41±3.98, and subjective well-being was 26.44±7.35. There was a positive correlation among cognitive function, self-efficacy and subjective well-being, except that there was no significant correlation between self-efficacy and cognitive function( r values were 0.263-0.687, P<0.01). Self-efficacy played a part in mediating between cognitive function and subjective well-being in patients with mild cognitive impairment, accounting for 37.8% of the total effect. Conclusions:Mild cognitive impairment can also have a negative impact on the subjective well-being of the elderly. Among them, self-efficacy plays a particularly important role in mediating. Interventions about self-efficacy on the elderly with mild cognitive impairment may have more significant effects.

Association analysis of gene polymorphism of osteoprotegerin with coal-burning endemic fluorosis in Guizhou Province / 中华地方病学杂志

Objective:To investigate the relationship between gene polymorphism of osteoprotegerin (OPG) and coal-burning endemic fluorosis in Guizhou Province.Methods:In 2018 and 2019, a case-control study was conducted in Bijie City, a typical coal-burning endemic fluorosis area in Guizhou Province, and 260 cases of coal-burning endemic fluorosis patients were selected as case group. According to the "Diagnostic Criteria for Endemic Skeletal Fluorosis" (WS 192-2008), the case group was divided into severe group (130 cases) and mild group (130 cases). At the same time, 130 cases without dental fluorosis and skeletal fluorosis symptoms were chosen as control group in Changshun County, a non-coal-burning endemic fluorosis area in Guizhou Province. Whole blood genomic DNA was extracted, and real-time fluorescence quantitative PCR with TaqMan-MGB probe was utilized to type the OPG gene rs2460985, rs2073618, rs6469804 and rs6993813 four single nucleotide polymorphism (SNP) loci of all samples, and genetic model analysis was performed to compare the frequency distribution of its alleles, genotypes and constructed haplotypes in control, mild and severe groups. Results:By Hardy-Weinberg equilibrium test, the genotype frequencies of the four SNP loci all reached genetic balance in control, mild and severe groups ( P > 0.05). There was a statistically significant difference in the genotype frequency of OPG gene rs6469804 locus among the three groups (χ 2 = 10.615, P < 0.05), and the difference in the genotype frequency of this locus between the control group and the severe group was statistically significant (χ 2 = 6.784, P < 0.05). The results of genetic model analysis showed that in comparison between the control group and the severe group, the optimal genetic model of rs6469804 locus was the overdominant genetic model, the frequency distribution of genotypes AA + GG and AG in the control group and the severe group was statistically significant [odds ratio ( OR) = 1.94, 95% confidence interval ( CI): 1.16 - 3.23, P < 0.05], genotype AG was a risk factor for coal-burning endemic fluorosis. In comparison between the control group and the mild group, the optimal genetic model of rs2073618 locus was the recessive genetic model, the frequency distribution of genotypes GG + GC and CC in the control group and the mild group was statistically significant ( OR = 3.17, 95% CI: 1.08 - 9.30, P < 0.05), genotype CC was a risk factor for coal-burning endemic fluorosis. In comparison between the control group and the mild group, haplotypes C-C-G-T and T-G-A-C were risk factors for coal-burning endemic fluorosis (adjusted OR = 2.41, 1.98, 95% CI: 1.29 - 4.50, 1.22 - 3.23, P < 0.05); in comparison between the control group and the severe group, haplotype T-G-A-C was a risk factor for coal-burning endemic fluorosis (adjusted OR = 1.87, 95% CI: 1.14 - 3.07, P < 0.05). Conclusion:OPG gene rs6469804 locus genotype AG and rs2073618 locus genotype CC may be risk factors for coal-burning endemic fluorosis.

Analysis of pregnancy outcome of prenatal ultrasonic diagnosed solitary lateral ventricular asymmetry / 中国医学影像技术

Objective: To analyze the pregnancy outcome of prenatal ultrasonic diagnosed fetal solitary lateral ventricular asymmetry. Methods: Imaging data and pregnancy outcome of 191 fetuses with prenatal ultrasonic diagnosed solitary lateral ventricle asymmetry were retrospectively analyzed. The infants were followed up for 6-12 months after birth, and infant neurodevelopmental assessment was used to assess whether there were abnormal reactions and behaviors. Results: Among 191 fetuses, 98 were found with asymmetric (98/191, 51.31%), while 93 were found with unilateral ventricular broadening (93/191, 48.69%). With the development of pregnancy, the width of lateral ventricle became normal in 130 fetuses (130/191, 68.06%), remained as former in 58 fetuses (58/191, 30.37%) but further expanded in 3 fetuses (3/191, 1.57%). In addition, 2 cases underwent umbilical cord blood puncture chromosome karyotype examination, 1 was trisomy 18, the karyotype was 47, XN, +18, and the other was normal. Normal delivery achieved in 189 fetuses, while 2 received labor induction, 1 with chromosomal karyotype abnormality and the other was considered as unilateral lateral ventricular progressive broadening combined with prenatal MRI suspected bilateral cerebral hemisphere dysplasia. Conclusion: Fetal solitary unilateral unilateral ventricular asymmetry has no obvious impact on fetal growth and development fetuses. The pregnancy outcome and prognosis mainly depends on the intrauterine progress of lateral ventricular width, which need to be closely monitored and followed-up.

Value of diagnostic plaque of type and nature in patients with coronary atherosclerotic heart disease by coronary CT angiography / 中国基层医药

Objective:To investigate the diagnostic value of plaque type and nature of coronary artery angiography in patients with coronary heart disease.Methods:The clinical data of 80 patients with coronary heart disease in Hangzhou Red Cross Hospital were retrospectively analyzed.According to the CT value of plaque, 20 cases were classified into calcified plaque group (CT value ≥130 HU) and soft plaque group (CT value ≤60 HU). Mixed plaque group (CT value 60-130 HU) had 40 cases.The association between coronary stenosis and plaque type, platelet function, serum biochemical and adipocytokine indicators were compared among the three groups.Results:There was a certain correlation between the proportion of different types of plaque and the degree of stenosis.There were 12 cases of mild stenosis, 3 cases of moderate stenosis and 5 cases of severe stenosis in calcified plaque group, 11 cases of mild stenosis, 14 cases of moderate stenosis and 15 cases of severe stenosis in mixed plaque group, 2 cases of mild stenosis, 7 cases of moderate stenosis and 11 cases of severe stenosis in soft tissue plaque group, the difference was statistically significant (χ 2=13.27, P<0.05). Comparison of platelet function, the calcified plaque group, mixed plaque group and soft tissue plaque group had no statistically significant difference in platelet count (PLT) ( F=1.56, P>0.05). The PDGF-BB, TEG-MA and P-selectin levels in the soft tissue plaque group were higher than those in the mixed plaque group and the calcified plaque group, the differences were statistically significant ( F=11.57, 6.47, 18.74, all P<0.05). As to the adipose cytokines, the levels of CRP, IL-6, IL-12, leptin and SFRP5 in the soft tissue plaque group were higher than those in the mixed plaque group and the calcified plaque group, the differences were statistically significant( F=7.95, 21.31, 14.58, 9.37, 13.58, all P<0.05). Conclusion:Coronary CT angiography can evaluate the severity of coronary heart disease by evaluating the type of plaque, and provide a theoretical basis for clinical treatment.It is worthy of clinical promotion.

Development of a new type of ampoule cutter / 中国实用护理杂志

Objective To develop a new practical ampule cutter with simple operation. Methods According to the actual clinical situation, the structure of the ampoule cutting device were designed, which was mainly divided into three parts: the handle, the ampoule cutting tube and the ampoule cutting device. Results The device can effectively cut the bottleneck of ampoule bottle and avoid the injury of sharp instrument and drug contamination caused by traditional breaking the bottleneck of ampoule bottle. Conclusion This kind of ampoule cutter can break the bottleneck of ampoule effectively, avoid the cross infection of medical staff, improve the work efficiency of medical staff and the effective utilization rate of medicine.

Development of a new type of ampoule cutter / 中国实用护理杂志

Objective@#To develop a new practical ampule cutter with simple operation.@*Methods@#According to the actual clinical situation, the structure of the ampoule cutting device were designed, which was mainly divided into three parts: the handle, the ampoule cutting tube and the ampoule cutting device.@*Results@#The device can effectively cut the bottleneck of ampoule bottle and avoid the injury of sharp instrument and drug contamination caused by traditional breaking the bottleneck of ampoule bottle.@*Conclusion@#This kind of ampoule cutter can break the bottleneck of ampoule effectively, avoid the cross infection of medical staff, improve the work efficiency of medical staff and the effective utilization rate of medicine.

Cross-cultural adaptation of the Iconographical falls efficacy scale / 中国实用护理杂志

Objective To translate the Iconographical Falls Efficacy Scale (Icon-FES)and verify its reliability and validity in community-dwelling older people. Methods After obtaining authorization, the Icon-FES was initially developed according to the guidelines for cross-cultural adaptation. Adopting a convenient sampling method, from December 2017 to March 2018, 450 older adults from 2 communities in Wuhan City were selected to fillgeneral information questionnaire, iconographical falls efficacy scale(Icon-FES)and falls efficacy scale-international(FES-I). Results The Cronbach α coefficient of Icon-FES was 0.972( the shorten Icon-FES was 0.902);split-half reliability was 0.947; retest reliability coefficient was 0.951. Based on the rotation factor component matrix and scree plot, 2 common factors were selected and the cumulative variance contribution rate was 67.33％.The Spearman rank correlation coefficient between Icon-FES and FES-I was 0.663. Conclusion Icon-FES has good reliability and validity in measuring the fear of falls in the community, especially for the elderly with low cultural level and strong activity in China. The shorten Icon-FES is also one of the quick and simple tools.

Simplification of Mental Quality Inventory for nurses based on classical test theory / 中国实用护理杂志

Objective@#To simplify the Mental Quality Inventory for Nurses (MQIN), and evaluate its reliability and validity.@*Methods@#The second sampling to include the 1 067 nurses from 5 third-class hospitals were investigated to screen items using dispersion tendency, independent-samples t test, coefficient correlation, factor analysis, Cronbach α coefficient and expert consultation. The reliability was evaluated by Cronbach α coefficient, the correlation coefficient of each dimension with scale to evaluate its content validity, the exploratory factor analysis to evaluate its structural validity.@*Results@#The simplified scale (MQIN-72) includes 72 items belonging to 5 dimensions, and accounted for 55.378% of the accumulated variances. The Cronbach′ s α coefficient was 0.856, the content validity index was between 0.599 and 0.903,@*Conclusions@#The simplified MQIN scale with excellent reliability and validity, this scale can be used as one of simple screening indexes for nurse′ s selection, cultivation and engagement.

Genetic polymorphism and relationship of 24 Y-STR loci among three ethnic minorities from Guizhou / 中华医学遗传学杂志

<p><b>OBJECTIVE</b>To study the distribution of haplotypes of Y-chromosomal short tandem repeats (Y-STR) loci among three ethnic minorities from Guizhou, China.</p><p><b>METHODS</b>Twenty four Y-STR loci of 174 unrelated males were amplified with a Microreader(TM)24Y Direct ID System kit. Capillary electrophoresis was carried out on an ABI 3100 Genetic Analyzer, and the data was analyzed with GeneMapper software.</p><p><b>RESULTS</b>Seventy six haplotypes were identified for the 24 Y-STR loci among the three ethnic minorities, including 13 from the Qiangs, 35 from the Manchurians, and 28 from the Shes, with the corresponding Haplotype Diversity (HD) being 0.7327, 0.9578, and 0.9344. Genetic distance between the Shes and Qiangs was relatively close, whilst that for Manchurians was relatively far.</p><p><b>CONCLUSION</b>Analysis of the genetic characteristics and relationship of the three ethnic minorities from Guizhou can provide a reference for the study of their origin, evolution and patrilineal fusion.</p>

Recent advances of miRNAs in adipose tissues / 生物工程学报

microRNAs (miRNAs), a class of endogenous non-coding RNA about 22 nucleotide long, regulate gene expression at the post-transcription level by inhibiting the translation or inducing the degradation of their target mRNAs in organisms. A lot of studies reveal that miRNAs in adipose tissues are involved in adipocyte differentiation and lipid metabolism and modulated by multiple transcription factors, adipocytokines and environmental factors, which form a complex regulatory network maintaining the homeostasis of adipose tissues. The discovery of circulating miRNAs adds new elements to the regulatory network. To study the metabolic diseases such as obesity, we should keep a new insight into the complex dynamic network. In this review, we summarize the latest studies of miRNAs in adipose tissues, which might provide new strategies for the treatment of obesity and other related diseases.