Objective: Compare and analyze the results of the domestic Lanyi AH600 glycated hemoglobin analyzer and other different detection systems to understand the comparability of the detection results of different detectors, and establish the best cut point of Lanyi AH600 determination of haemoglobin A1c (HbA1c) in the diagnosis of diabetes. Methods: Multi center cohort study was adopted. The clinical laboratory departments of 18 medical institutions independently collected test samples from their respective hospitals from March to April 2022, and independently completed comparative analysis of the evaluated instrument (Lanyi AH600) and the reference instrument HbA1c. The reference instruments include four different brands of glycosylated hemoglobin meters, including Arkray, Bio-Rad, DOSOH, and Huizhong. Scatter plot was used to calculate the correlation between the results of different detection systems, and the regression equation was calculated. The consistency analysis between the results of different detection systems was evaluated by Bland Altman method. Consistency judgment principles: (1) When the 95% limits of agreement (95% LoA) of the measurement difference was within 0.4% HbA1c and the measurement score was≥80 points, the comparison consistency was good; (2) When the measurement difference of 95% LoA exceeded 0.4% HbA1c, and the measurement score was≥80 points, the comparison consistency was relatively good; (3) The measurement score was less than 80 points, the comparison consistency was poor. The difference between the results of different detection systems was tested by paired sample T test or Wilcoxon paired sign rank sum test; The best cut-off point of diabetes was analyzed by receiver operating characteristic curve (ROC). Results: The correlation coefficient R² of results between Lanyi AH600 and the reference instrument in 16 hospitals is≥0.99; The Bland Altman consistency analysis showed that the difference of 95% LoA in Nanjing Maternity and Child Health Care Hospital in Jiangsu Province (reference instrument: Arkray HA8180) was -0.486%-0.325%, and the measurement score was 94.6 points (473/500); The difference of 95% LoA in the Tibetan Traditional Medical Hospital of TAR (reference instrument: Bio-Rad Variant II) was -0.727%-0.612%, and the measurement score was 89.8 points; The difference of 95% LoA in the People's Hospital of Chongqing Liang Jiang New Area (reference instrument: Huizhong MQ-2000PT) was -0.231%-0.461%, and the measurement score was 96.6 points; The difference of 95% LoA in the Taihe Hospital of traditional Chinese Medicine in Anhui Province (reference instrument: Huizhong MQ-2000PT) was -0.469%-0.479%, and the measurement score was 91.9 points. The other 14 hospitals, Lanyi AH600, were compared with 4 reference instrument brands, the difference of 95% LoA was less than 0.4% HbA1c, and the scores were all greater than 95 points. The results of paired sample T test or Wilcoxon paired sign rank sum test showed that there was no statistically significant difference between Lanyi AH600 and the reference instrument Arkray HA8180 (Z=1.665,P=0.096), with no statistical difference. The mean difference between the measured values of the two instruments was 0.004%. The comparison data of Lanyi AH600 and the reference instrument of all other institutions had significant differences (all P<0.001), however, it was necessary to consider whether it was within the clinical acceptable range in combination with the results of the Bland-Altman consistency analysis. The ROC curve of HbA1c detected by Lanyi AH600 in 985 patients with diabetes and 3 423 patients with non-diabetes was analyzed, the area under curve (AUC) was 0.877, the standard error was 0.007, and the 95% confidence interval 95%CI was (0.864, 0.891), which was statistically significant (P<0.001). The maximum value of Youden index was 0.634, and the corresponding HbA1c cut point was 6.235%. The sensitivity and specificity of diabetes diagnosis were 76.2% and 87.2%, respectively. Conclusion: Among the hospitals and instruments currently included in this study, among these four hospitals included Nanjing Maternity and Child Health Care Hospital in Jiangsu Province (reference instrument: Arkray HA8180), Tibetan Traditional Medical Hospital of TAR (reference instrument: Bio-Rad Variant Ⅱ), the People's Hospital of Chongqing Liang Jiang New Area (reference instrument: Huizhong MQ-2000PT), and the Taihe Hospital of traditional Chinese Medicine in Anhui Province (reference instrument: Huizhong MQ-2000PT), the comparison between Lanyi AH600 and the reference instruments showed relatively good consistency, while the other 14 hospitals involved four different brands of reference instruments: Arkray, Bio-Rad, DOSOH, and Huizhong, Lanyi AH600 had good consistency with its comparison. The best cut point of the domestic Lanyi AH600 for detecting HbA1c in the diagnosis of diabetes is 6.235%.
Pregnancy ; Child ; Humans ; Female ; Glycated Hemoglobin ; Cohort Studies ; Diabetes Mellitus/diagnosis* ; Sensitivity and Specificity ; ROC Curve

ObjectiveAt the end of November 2022， Guangzhou implemented the latest Covid-19 epidemic prevention policy and began to gradually lift the lockdown. However， under the new epidemic prevention situation， the situation of SARS-CoV-2 infection in hospitalized patients in China is still unclear. Accordingly， this paper aims to study the SARS-CoV-2 infection of hospitalized patients in Guangzhou under the new epidemic prevention and control situation. MethodsThe results of SARS-CoV-2 nucleic acid tests in our hospital from the end of November 2022 to the beginning of February 2023 were retrospectively analyzed. The positive rate of SARS-CoV-2 nucleic acid tests in outpatients and inpatients under the new epidemic prevention situation， and the nosocomial infection of SARS-CoV-2 in inpatients were statistically analyzed. ResultsThis study retrospectively analyzed the SARS-CoV-2 nucleic acid test results of 13 959 patients， including 6 966 outpatients and 6 993 inpatients. On November 30， 2022， the SARS-CoV-2 nucleic acid test results of outpatients began to be positive， indicating that the outbreak of the SARS-CoV-2 infection had begun. On December 7， one case of SARS-CoV-2 nucleic acid test results of hospitalized patients was positive， and nosocomial infections began to break out. On December 15， the positive rate of SARS-CoV-2 nucleic acid test among patients exceeded 40 %， and the epidemic entered its peak period. After the end of December， the test positive rate gradually decreased， but the positive rate of inpatients was always higher than that of outpatients. Compared with December 2022， the positive rate of SARS-CoV-2 nucleic acid test of patients in many departments in January 2023 decreased， but the positive rate of SARS-CoV-2 nucleic acid test of inpatients in the oncology department increased significantly （P < 0.001）. Further analysis found that the nosocomial infection rate of SARS-CoV-2 in inpatients was 86.57 % （329/380）. However， the nosocomial infection rate in lymphoma patients ［58.33 % （14/24）］ was significantly lower than that of the hospitalized patients with other disease types （P < 0.001）. ConclusionThe positive rate of SARS-CoV-2 nucleic acid testing among patients reached its peak in mid-December 2022. In January 2023， the positive rate of SARS-CoV-2 nucleic acid testing gradually decreased， while the number or positive rate of SARS-CoV-2 nucleic acid testing positive patients in some departments increased. The nosocomial infection rate among hospitalized patients is as high as 90 %. There are differences in the nosocomial infection rate of SARS-CoV-2 among inpatients with different disease types. In summary， this study provides preliminary data on the epidemiological characteristics of SARS-CoV-2 infection among hospitalized patients in Guangzhou， as well as the protection against infection among hospitalized patients and cross-infection between medical staffs and patients.

In 2020, the prevalence of abnormal spinal curvature among 54 079 students in Shandong Province was 1.54%. The multivariate logistic regression model analysis showed that, compared with those in primary school, economically underdeveloped areas, and non-residential schools, students in middle and high schools, economically average areas, and residential schools had a higher risk of abnormal spinal curvature, with OR (95%CI) values of 2.029 (1.662-2.476), 2.746 (2.208-3.416), 2.237 (1.740-2.875) and 2.057 (1.705-2.483), respectively. Compared with those in economically underdeveloped areas, who were underweight, who had seat adjustments≤1 time per academic year, and who had physical education classes≤1 per week, students in economically developed areas, who were normal weight, overweight, and obese, who had seat adjustments≥2 times per academic year, and who had physical education classes 2-3 or≥4 per week, had a lower risk of abnormal spinal curvature, with OR (95%CI) values of 0.690 (0.521-0.915), 0.722 (0.546-0.955), 0.535 (0.389-0.735), 0.383 (0.274-0.535), 0.835 (0.711-0.980), 0.561 (0.474-0.663) and 0.491 (0.315-0.766), respectively.
Humans ; Risk Factors ; Prevalence ; Spinal Curvatures ; Schools ; Students

In 2020, the prevalence of abnormal spinal curvature among 54 079 students in Shandong Province was 1.54%. The multivariate logistic regression model analysis showed that, compared with those in primary school, economically underdeveloped areas, and non-residential schools, students in middle and high schools, economically average areas, and residential schools had a higher risk of abnormal spinal curvature, with OR (95%CI) values of 2.029 (1.662-2.476), 2.746 (2.208-3.416), 2.237 (1.740-2.875) and 2.057 (1.705-2.483), respectively. Compared with those in economically underdeveloped areas, who were underweight, who had seat adjustments≤1 time per academic year, and who had physical education classes≤1 per week, students in economically developed areas, who were normal weight, overweight, and obese, who had seat adjustments≥2 times per academic year, and who had physical education classes 2-3 or≥4 per week, had a lower risk of abnormal spinal curvature, with OR (95%CI) values of 0.690 (0.521-0.915), 0.722 (0.546-0.955), 0.535 (0.389-0.735), 0.383 (0.274-0.535), 0.835 (0.711-0.980), 0.561 (0.474-0.663) and 0.491 (0.315-0.766), respectively.
Humans ; Risk Factors ; Prevalence ; Spinal Curvatures ; Schools ; Students

Breast/pathology* ; Breast Neoplasms/surgery* ; Female ; Humans ; Phyllodes Tumor/surgery*

Objective:To observe the relationship between cervical curvature and spinal drift distance after laminectomy with lateral mass screw fixation, and its effect on clinical outcome. Methods:From January, 2017 to October, 2018, a total of 117 patients with cervical spondylotic myelopathy (CSM) underwent laminectomy with lateral mass screw fixation, and 90 of them completed the follow-up. According to the patients' cervical curvature (CC), they were divided into three groups: those CC between 0° to 5° were in Group A (n = 28), 5° to 16.5° in Group B (n = 36) and CC > 16.5° in Group C (n = 26). The spinal drift distance, nerve recovery, axial symptoms and C₅ palsy were recorded and analyzed. Results:There were significant differences in CC and spinal drift distance (F > 152.119,P < 0.001), and no significant difference was found in laminectomy width and incidence of C₅ palsy (P > 0.05) among three groups. The Japanese Orthopaedic Association (JOA) score significantly increased in all the groups post operation and at the last follow-up (t > 8.869,P < 0.001), and no significant difference was found among there groups at the same time (P > 0.05), as well as the incidence of C₅ palsy (F = 0.472,P = 0.625). There was significant difference in the score of Visual Analogue Scale of axial symptoms among three groups (F > 34.800,P < 0.001), which was lower in groups B and C than in group A (t > 5.845,P< 0.001), and no significant differene was found between group B and group C. Conclusion:On the basis of the same laminectomy width, the greater the CC was, the more favorable the spinal drift went backwards. The loss of CC was related to the occurrence of axial symptoms, but was not correlated with the neurological recovery and C₅ palsy.

By preparing 10 batches of the material reference of Linggui Zhugan Decoction,the methodology of the characteristic spectrum of the material reference was created. The creaming rate range,the contents and the transfer rate range of cinnamaldehyde,glycyrrhizin and glycyrrhizic acid,the characteristic peaks and the similarity range of the characteristic spectrum of Linggui Zhugan Decoction were determined to clarify key quality attributes of the material reference of Linggui Zhugan Decoction. In the 10 batches of the material reference of Linggui Zhugan Decoction,the similarity of characteristic spectrum was higher than 0. 9. Furthermore,after summarizing the characteristic peak information,we knew that Fuling had two characteristic peaks,Guizhi had six characteristic peaks,Baizhu had two characteristic peaks and Gancao had 11 characteristic peaks. The average creaming rate of the material reference of the ten batches was( 12. 13 ± 0. 35) %. The average content of cinnamaldehyde was 0. 32%,the average transfer rate was 10. 69%,the content of cinnamaldehyde in the different batches was between 0. 22% and 0. 42%,and the transfer rate was between 7. 48% and13. 90%. The average content of glycyrrhizin was 0. 84%,the average transfer rate was 50. 39%,the content of glycyrrhizin in the different batches was between 0. 42% and 1. 26%,and the transfer rate was between 35. 27% and 65. 51%. The average content of glycyrrhizic was 1. 88%,the average transfer rate was 40. 74%,the content of glycyrrhizic in the different batches was between 0. 94% and2. 82%,and the transfer rate was between 28. 52% and 52. 96%. In this paper,the quality value transmitting of substance benchmarks of Linggui Zhugan Decoction was analyzed by the combination of characteristic spectrum,creaming rate and the content of index component. A scientific and stable method was preliminarily established,which provided scientific basis for the quality control and formulation development of Linggui Zhugan Decoction.
Chromatography, High Pressure Liquid ; Drugs, Chinese Herbal/standards* ; Glycyrrhiza ; Glycyrrhizic Acid/analysis* ; Plant Extracts/standards* ; Quality Control

Objective Streptococcus pneumoniae is one of the main pathogenic factors of chronic rhinosinusitis (CRS). This study was to explore the method of establishing a CRS model in C57BL/6J mice.Methods Thirty C57BL/6J mice were equally randomized into a CRS model, a sham operation and a blank control group. The CRS model was made by implanting type-Ⅲ streptococcus pneumoniae in the maxillary sinuses, the mice of the sham operation group underwent opening and suturing of the maxillary sinuses without implantation of any streptococcus pneumonia, while the blank controls did not receive any operation. Two months later, all the mice were sacrificed and the nasal sinus mucosal tissue was harvested, embedded with paraffin, sectioned, and subjected to HE staining, followed by observation of the pathological changes under the microscope.Results The CRS model mice exhibited significant proliferation and disorderly arrangement of epithelial cells in the nasal mucosal tissue, with degeneration, necrosis, exfoliation, ulceration, goblet cell proliferation, gland and tissue hyperplasia, and infiltration of lymphocytes, plasmocytes and monocytes. No obvious inflammation was observed in the sham operation and blank control groups. The pathology index score of the nasal sinus mucosal tissue was significantly higher in the CRS model than in the sham operation and blank control groups (\[14.800±5.200\] vs \[2.000±2.906\] and \[1.800±2.098\], P<0.05) but no statistically significant difference between the latter two groups (P>0.05).Conclusion The CRS model was successfully established in mice, which has provided some reference for the construction of the CRS model in animals.

Recently, compound Ejiao slurry (FFEJJ) had been applied to treat cancer patients in clinic, with obvious curative effect. In this study, data and literatures were collected from the TCM chemical component database to establish the chemical component database of FFEJJ. Afterwards, MetaDrug software was used to predict the targets of FFEJJ and obtain the compound-target network. Next, the compound-target network was compared and analyzed to obtain the "compound-target-tumor target" heterogeneous network. Besides, further analysis was made on gene functions and metabolic pathway. The results indicated that FFEJJ could directly resist tumors by regulating cancer cell differentiation, growth, proliferation and apoptosis, and show an adjuvant therapeutic effect by enriching the blood and increasing the immunity.
Adjuvants, Pharmaceutic ; therapeutic use ; Antineoplastic Agents ; therapeutic use ; Drugs, Chinese Herbal ; therapeutic use ; Gene Regulatory Networks ; drug effects ; Humans ; Molecular Targeted Therapy ; Neoplasms ; drug therapy ; genetics ; metabolism

OBJECTIVETo investigate the prognostic factors for patients with thoracic ossification of the ligamentum flavum (OLF) and thoracic ossification of posterior longitudinal ligament (OPLL).

METHODSClinical information of 83 patients suffering from thoracic OLF and OPLL was reviewed retrospectively from January 2006 to June 2010. The related factors such as gender, age, preoperative and postoperative Japanese Orthopedic Association (JOA) score, pathological segment, type of thoracic OPLL, degree of thoracic kyphosis, anteroposterior diameter of OPLL, range of circumferential decompression, cerebrospinal fluid leakage or not and dysfunction or not and carotid lumbar disorders or not were analyzed by Chi-square and Logistic regression.

RESULTSAll cases were classified into desirable group (58 cases) and undesirable group (25 cases) based on the postoperative JOA score improvement rate. Comparison of physical characteristics between two groups of age, preoperative JOA and the course of the disease had not statistically significant (P > 0.05). Two groups in pathological segment of thoracic OPLL (χ(2) = 6.290, P = 0.043), the ossification type of OPLL (χ(2) = 5.361, P = 0.021) and dysfunction or not in preoperative (χ(2) = 27.711, P = 0.000) had significant difference. Logistic regression analysis showed that the upper thoracic segments (P = 0.044), beak type ossification (P = 0.023) and with dysfunction in preoperative (P = 0.009) were risk factors. There were 24 patients (28.9%) with cerebrospinal fluid leakage, 3 patients with early postoperative deep infection and neurological deterioration of 2 cases in postoperative.

CONCLUSIONSPatients with ossification on the upper section of thoracic have a better prognosis, but the beaked localized longitudinal ligament ossification in patients and associated with preoperative dysfunction show a poor prognosis, combined jumping segmental ossification and cervical or lumbar severe disorders are the influencing factor for poor prognosis.

Adult ; Aged ; Decompression, Surgical ; Female ; Humans ; Ligamentum Flavum ; pathology ; Logistic Models ; Male ; Middle Aged ; Ossification of Posterior Longitudinal Ligament ; diagnosis ; surgery ; Postoperative Complications ; epidemiology ; Prognosis ; Retrospective Studies