Objective: To analyze the nucleic acid load of human parvovirus B19 in major commercially available blood products in China, including human albumin, human intravenous immunoglobulin, human rabies immunoglobulin and various coagulation factor products, aiming to provide evidence for improving blood product manufacturing processes and quality control of source plasma. Methods: A total of 98 batches of coagulation factor products were tested for human parvovirus B19 nucleic acid using real-time fluorescent quantitative PCR, including 42 batches of human prothrombin complex, 35 batches of human coagulation factor Ⅷ, and 21 batches of human fibrinogen. Additionally, 6 batches of human albumin, 6 batches of human intravenous immunoglobulin, and 38 batches of human rabies immunoglobulin were tested for human parvovirus B19 nucleic acid. Results: Human parvovirus B19 nucleic acid were undetectable in human albumin, human intravenous immunoglobulin and human rabies immunoglobulin. Among the 98 batches of coagulation factor products tested for human parvovirus B19 nucleic acid, B19 nucleic acid reactivity rate was 69.0% (29/42) for human prothrombin complex batches, but nucleic acid concentration were all significantly lower than 10 IU/mL. The reactivity rate of B19 nucleic acid in 35 batches of human coagulation factor Ⅷ was 48.6% (17/35), with nucleic acid concentration all below 10 IU/mL. The reactivity rate of B19 nucleic acid in 21 batches of human fibrinogen was 61.9% (13/21), with nucleic acid concentration all below 10 IU/mL. Conclusion: No human parvovirus B19 has been detected in human albumin, human intravenous immunoglobulin, or human rabies immunoglobulin. Human parvovirus B19 nucleic acid may exist in commercially available coagulation factor products, highlighting the need for enhanced screening of human parvovirus B19 nucleic acid in these products. It is also recommended that B19 viral nucleic acid testing be conducted on source plasma, particularly for coagulation factor products.

Objective: To analyze the nucleic acid load of human parvovirus B19 in major commercially available blood products in China, including human albumin, human intravenous immunoglobulin, human rabies immunoglobulin and various coagulation factor products, aiming to provide evidence for improving blood product manufacturing processes and quality control of source plasma. Methods: A total of 98 batches of coagulation factor products were tested for human parvovirus B19 nucleic acid using real-time fluorescent quantitative PCR, including 42 batches of human prothrombin complex, 35 batches of human coagulation factor Ⅷ, and 21 batches of human fibrinogen. Additionally, 6 batches of human albumin, 6 batches of human intravenous immunoglobulin, and 38 batches of human rabies immunoglobulin were tested for human parvovirus B19 nucleic acid. Results: Human parvovirus B19 nucleic acid were undetectable in human albumin, human intravenous immunoglobulin and human rabies immunoglobulin. Among the 98 batches of coagulation factor products tested for human parvovirus B19 nucleic acid, B19 nucleic acid reactivity rate was 69.0% (29/42) for human prothrombin complex batches, but nucleic acid concentration were all significantly lower than 10 IU/mL. The reactivity rate of B19 nucleic acid in 35 batches of human coagulation factor Ⅷ was 48.6% (17/35), with nucleic acid concentration all below 10 IU/mL. The reactivity rate of B19 nucleic acid in 21 batches of human fibrinogen was 61.9% (13/21), with nucleic acid concentration all below 10 IU/mL. Conclusion: No human parvovirus B19 has been detected in human albumin, human intravenous immunoglobulin, or human rabies immunoglobulin. Human parvovirus B19 nucleic acid may exist in commercially available coagulation factor products, highlighting the need for enhanced screening of human parvovirus B19 nucleic acid in these products. It is also recommended that B19 viral nucleic acid testing be conducted on source plasma, particularly for coagulation factor products.

OBJECTIVE: To review the research progress and challenges of poly (L-lactic acid) (PLLA) membrane in preventing tendon adhesion. METHODS: The relevant literature at home and abroad in recent years was extensively searched, covering the mechanism of tendon adhesion formation, the adaptation challenge and balancing strategy of PLLA, the physicochemical modification of PLLA anti-adhesion membrane and its application in tendon anti-adhesion. In this paper, the research progress and modification strategies of PLLA membranes were systematically reviewed from the three dimensions of tissue adaptation, mechanical adaptation, and degradation adaptation. RESULTS: The three-dimensional adaptation of PLLA membrane is optimized by combining materials (such as hydroxyapatite, polycaprolactone), structural design (multilayer/gradient membrane), and drug loading (anti-inflammatory drug). The balance between anti-adhesion and pro-healing is achieved, the mechanical adaptation significantly improve, and degradation is achieved (targeting the degradation cycle to 2-4 weeks to cover the tendon repair period). CONCLUSION In the future, it is necessary to identify the optimal balance point of three-dimensional fitness, unify the evaluation criteria and solve the degradation side effects through the co-design of physicochemical modification and drug loading system to break through the bottleneck of clinical translation.
Tissue Adhesions/prevention & control* ; Polyesters/chemistry* ; Humans ; Biocompatible Materials/chemistry* ; Tendons/surgery* ; Membranes, Artificial ; Tendon Injuries/surgery* ; Wound Healing ; Animals ; Durapatite/chemistry*

Objective:The incidence of occupational burnout among emergency department healthcare workers is high,and their occupational health deserves attention.Establishing a comprehensive occupational health system in medical institutions is crucial.This study aims to understand the current status of occupational burnout among emergency department healthcare workers,analyze its influencing factors,and provide references for preventing burnout in this population. Methods:A cross-sectional survey was conducted using convenience sampling through the Questionnaire Star platform from December 2022 to January 2023 among emergency department healthcare workers.The Maslach Burnout Inventory-General Survey(MBI-GS)scale was used to assess the level of occupational burnout,and univariate analysis and binary Logistic regression analysis were employed to explore the influencing factors of burnout. Results:A total of 1 173 valid questionnaires were collected,with 946(80.65％)respondents experiencing occupational burnout.The proportions of mild-to-moderate and severe burnout were 73.57％and 7.08％,respectively.The scores for the three dimensions of burnout among emergency department healthcare workers were as follows:emotional exhaustion(EE)2.33±0.31;depersonalization(DP)1.88±0.28;low personal accomplishment(LPA)3.20±0.39.The overall score was 2.46±0.22.Factors associated with occupational burnout included being an only child(OR=1.362,95％CI-0.707 to-0.058),the average number of night shifts per month(OR=1.167,95％CI 0.091 to 0.272),and personal experience of workplace violence(OR=1.094,95％CI 0.027 to 0.195)(all P＜0.05). Conclusion:The incidence of occupational burnout is high among emergency department healthcare workers.Effective measures should be taken by management to promptly intervene,reduce burnout,and ensure the smooth functioning of emergency medical services.

Objective:To compare the clinical efficacy of endoscopic submucosal dissection (ESD) and endoscopic mucosal resection (EMR) in the treatment of elderly patients with early gastric cancer.Methods:Ninety-two elderly patients with early gastric cancer admitted to the 923th Hospital of the Joint Service Support Force of PLA from June 2019 to February 2022 were enrolled, and they were divided into ESD group (60 cases) and EMR group (32 cases) according to different surgical methods. The ESD group was treated with ESD surgery, while the EMR group was treated with EMR surgery. The short-term clinical efficacy of the two groups was compared. The gastric function including pepsinogen Ⅰ(PGⅠ), pepsinogenⅡ(PGⅡ), PGⅠ /PGⅡ ratio and the tumor markers including carcinoembryonic antigen (CEA), carbohydrate antigen 19-9 (CA19-9), carbohydrate antigen 125 (CA125), and invasion genes within the lesion including vascular endothelial growth factor C (VEGF-C), E-cadherin, microtubule depolymerin (Stathmin), Krüppel like factor 4 (KLF4) were detected before and 3 d after surgery. Followed up for 1 year, the recurrence rate and complications between the two groups were compared.Results:All of 92 patients successfully removed the diseased tissue as a whole, and the R0 and R1 resection rate between the two groups had no statistical differences ( P>0.05). At 3 d after surgery, the levels of PG Ⅰand PGⅠ/PG Ⅱin the both groups were higher than those before surgery, and the level of PG Ⅱ in the both groups was lower than that before surgery; the levels of PG Ⅰand PGⅠ/PG Ⅱ in the ESD group were higher than those in the EMR group: (86.50 ± 8.23) μg/L vs. (77.47 ± 7.40) μg/L, 5.29 ± 0.54 vs. 3.65 ± 0.50; the level of PG Ⅱ ratio in the ESD group was lower than that in the EMR group: (16.34 ± 3.05) μg/L vs. (21.20 ± 3.27) μg/L, there were statistical differences ( P<0.05). At 3 d after surgery, the levels of CEA, CA19-9 and CA125 in the two groups were decreased, and the levels of the above indicators in the ESD group were lower than those in the EMR group: (2.42 ± 0.45) μg/L vs. (3.29 ± 0.40) μg/L, (8.55 ± 2.10) kU/L vs. (10.62 ± 2.76) kU/L, (13.75 ± 4.28) kU/L vs. (17.20 ± 4.90) kU/L, there were statistical differences ( P<0.05). At 3 d after surgery, the mRNA expression of E-cadherin and KLF4 in the two groups were increased, and the mRNA expression of VEGF-C, Stathmin in the two groups were decreased, and the mRNA expression of E-cadherin and KLF4 in the ESD group were lower than those in the EMR group: 2.89 ± 0.31 vs. 3.03 ± 0.21, 2.90 ± 0.28 vs. 3.12 ± 0.37, and the mRNA expression of VEGF-C, Stathmin in the ESD group were higher than those in the EMR group: 0.45 ± 0.11 vs. 0.41 ± 0.07, 0.52 ± 0.23 vs. 0.43 ± 0.09, there were statistical differences ( P<0.05). The complication rate in the ESD group was lower than that in the EMR group: 5.00%(3/60) vs. 23.33% (14/60) , there was statistical difference ( χ2 = 8.32, P<0.01). The recurrence rate in the 1-year between the two groups had no statistical difference ( P>0.05). Conclusions:Compared with EMR, ESD is effective in the treatment of elderly early gastric cancer, which can better correct the abnormal secretion of pepsinogen, promote the functional recovery of gastric cells and glands, reduce the level of serum tumor markers, inhibit the metastasis and proliferation of tumor cells, and has good safety.

Iron is indispensable for the viablility of nearly all living organisms, and it is imperative for cells, tissues, and organisms to acquire this essential metal sufficiently and maintain its metabolic stability for survival. Disruption of iron homeostasis can lead to the development of various diseases. There is a robust connection between iron metabolism and infection, immunity, inflammation, and aging, suggesting that disorders in iron metabolism may contribute to the pathogenesis of arthritis. Numerous studies have focused on the significant role of iron metabolism in the development of arthritis and its potential for targeted drug therapy. Targeting iron metabolism offers a promising approach for individualized treatment of arthritis. Therefore, this review aimed to investigate the mechanisms by which the body maintains iron metabolism and the impacts of iron and iron metabolism disorders on arthritis. Furthermore, this review aimed to identify potential therapeutic targets and active substances related to iron metabolism, which could provide promising research directions in this field.

Objective To study the correlation between single nucleotide polymorphisms at loci rs4535211,rs75885714,and rs7653834 of phosphatidylinositol-specific phospholipase 2 (PLCL2) gene and large artery atherosclerotic (LAA) ischemic stroke.Methods A total of 105 patients with newly diagnosed LAA ischemic stroke admitted to the Second Affiliated Hospital of Xinjiang Medical University from July 2021 to July 2022 were selected as the observation group,and 103 patients with gender and age matching phys-ical examination in this hospital during the same period were selected as the control group. The clinical data and serum inflammatory markers were collected and compared between the two groups.Genotypes of PLCL2 gene rs4535211,rs75885714 and rs7653834 loci in the two groups were detected,and genotype and allele fre-quencies were calculated.Results The levels of C-reactive protein (CRP),interleukin-6 (IL-6),neutrophil to lymphocyte ratio (NLR),monocyte to high-density lipoprotein-cholesterol ratio (MHR),platelet to lympho-cyte ratio (PLR) and D-dimer in the observation group were higher than those in the control group.The level of high density lipoprotein-cholesterol (HDL-C) was lower than that of the control group (P<0.05). rs7653834 locus was C/C,C/T,T/T genotypes,and the difference between the two groups was statistically significant (P<0.05).The levels of C/C,T/C and T/T genotypes NLR and PLR at rs7653834 locus were sta-tistically significant between the two groups (P<0.05).The analysis results of co-dominant model,dominant model and overdominant model showed that there was statistical significance in rs7653834 locus genotype be-tween the two groups (P<0.05).Conclusion There may be a potential association between rs7653834 locus polymorphism of PLCL2 gene and LAA type ischemic stroke.

Objective To explore the pH conditions for human immunodeficiency virus(HIV) detection(ELISA) in the finished products of human immunoglobulin(pH 4) for intravenous injection(IVIG), in order to control the residual HIV risk of IVIG and ensure the safety of blood products.Methods The HIV antibody reference materials and antigen reference materials were diluted to the detection limit level using different pH buffer solutions. The detection of HIV reference materials at different pH and detection limit levels by the reagent kit were observed to determine the appropriate pH detection range of the reagent kit. The pH range of the finished product was adjusted to the appropriate range of the reagent kit by using different concentrations of Tris-HCl solutions, and then the HIV antibody reference materials and HIV antigen reference materials were diluted to the detection limit level to obtain the appropriate pH detection range of the product.Results The A450/630 values of the HIV antibody reference materials and HIV antigen reference materials with detection buffer at pH 7. 0-9. 0 were similar to those of the normal saline(NS) group, and the suitable pH range for the HIV kit used was pH 7. 0-9. 0. IVIG 4. 0 was diluted with0. 1 mol/L Tris-HCl solution to the appropriate pH range of the reagent kit as the diluent. The A450/630 value of antibody 0. 25 NCU/mL in IVIG pH 7. 0-8. 0 group was higher than the cutoff value and significantly higher than that in the IVIG pH 4. 0 group.The amount of 0. 1 mol/L Tris-HCl solution added accounted for more than 1/5 of the IVIG volume. IVIG 4. 0 was diluted with 1 mol/L Tris-HCl solution to the appropriate pH range of the reagent kit as the diluent. The A450/630value of antibody 0. 25 NCU/mL and antigen 1. 5 U/mL levels was higher than the cutoff value in the IVIG pH 7. 0-9. 0 group. The amount of 1 mol/L Tris-HCl solution added was only 1/28-1/37 of the total detection volume, and had little effect on the effective detection content of the test sample.Conclusion Compared to the detection conditions of pH 4. 0, pH 7. 5-8. 0 is more suitable for HIV detection in IVIG. 1 mol/L Tris-HCl solution was used to adjust the pH of IVIG to 7. 5-8. 0 for HIV detection(ELISA)in IVIG, which effectively solves the problem that the pH bias in IVIG finished product is not conducive to HIV detection, with no effect on the detection volume of the finished product, thus significantly improving the accuracy and reliability of the detection results.

Objective To analyze and verify the factors influencing the prediction model of suicidal ideation of burn patients in hospital based on international scale.Methods The clinical data of 194 burn patients treated in hospi-tal were retrospectively analyzed.General data questionnaire,ISI,HAMD,HAMA,ASDS and BSHS-B were used to evaluate the influencing factors of suicidal ideation.According to the presence or absence of suicidal ideation,the patients were divided into the suicidal ideation group and the non-suicidal ideation group.The baseline data be-tween the groups were compared,univariate screening of meaningful variables was conducted,and multivariate Lo-gistic regression modeling was further conducted.ROC analysis evaluated model differentiation,and internal verifi-cation was conducted.Results According to the baseline data analysis results,there were no statistically signifi-cant differences in age,BMI,years of education,smoking history,estimated percentage of burned area,head and neck burns,hip and perineal burns,and pain scores in the suicidal ideation group(21/194)compared with the non-suicidal ideation group(173/194).Gender(P=0.047),presence or absence of trunk burn(P=0.022),severity of burn(moderate burn:P=0.002;severe burn:P=0.458;extremely severe burn:P=0.169),ISI score(P=0.001),HAMD score(P=0.001),HAMA score(P＜0.001),ASDS score(P=0.003),BSHS-B score(P=0.011)had statistical significance.Multivariate Logistic regression analysis showed that the severity of burn(moderate burn:OR=0.103,P=0.009;severe burn:OR=0.351,P=0.223;extremely severe burn:OR=0.103,P=0.095)and HAMA score(OR=1.136,P=0.007)were independent influencing factors for burn patients with suicidal ideation.The Logistic regression prediction model was established by two independent influ-encing factors.ROC analysis results showed that the model had good differentiation(AUC=0.880,95％CI:0.808-0.952,P＜0.001)and the internal verification accuracy was 79.38％.Conclusion The prediction model built on the basis of two independent influencing factors,burn severity and HAMA score,has a good predic-tion accuracy,which is helpful for clinicians to intervene as soon as possible for burn patients with suicidal ideation in hospital,in order to reduce the incidence and enrich clinical psychological research.

Objective To investigate the efficacy of Qizhu Bishi Granules combined with methotrexate in the treatment of patients with rheumatoid arthritis (RA). Methods A total of 140 RA patients in the Shijiazhuang City Third Hospital from January to May 2023 were selected as research objects and randomly divided into a treatment group and a control group, with 70 cases in eachgroup. The control group was treated with methotrexate, while the treatment group was treated with Qizhu Bishi Granules combined with methotrexate, and the treatment duration was 3 months for both groups. The total effective rate, score of traditional Chinese medicine (TCM) syndromes, the number of swollen joints, the number of tender joints, the Visual Analogue Scale (VAS) score for pain, the Disease Activity Score in 28 Joints (DAS28), interleukin-1 (IL-1), tumor necrosis factor-α (TNF-α), erythrocyte sedimentation rate (ESR), high-sensitivity C reactive protein (hs-CRP), rheumatoid factor (RF) and anti-cyclic citrullinated peptide antibody (anti-CCP antibody) levels before treatment and at 1 month and 3 months after treatment as well as therapeutic safety were compared between the two groups. Results The total effective rate in the treatment group was 97.14%, which was significantly higher than 87.14% in the control group (P < 0.05). After 1 month and 3 months of treatment, the scores of TCM syndromes, the number of swollen joints, the number of tender joints, the VAS score, DAS28, IL-1, TNF-α, ESR, hs-CRP, RF and anti-CCP antibody levels in the treatment group were significantly lower than those in the control group (P < 0.05). No adverse reactions occurred in both group. Conclusion Qizhu Bishi Granules combined with methotrexate in treating RA can effectively alleviate clinical symptoms, improve TCM syndromes, reduce inflammatory responses, decrease disease activity, and the therapeutic efficacy is reliable and safe.