[Objective] To investigate the molecular prevalence and genotype of human parvovirus B19(B19) among blood donors in Lanzhou, and provide data support for monitoring the positive rate of B19 DNA in local blood donors. [Methods] A total of 7 644 blood donor samples collected from January to September 2022 were randomly screened using real-time fluorescent PCR, resulting in 23 samples testing positive for B19 DNA. The characteristics of the B19 DNA reactive donors including gender, age, blood donation recruitment and promotion mode, and donation frequency were analyzed using SPSS 22.0. Additionally, the VP1 gene fragment of B19 DNA reactive samples was sequenced and an evolutionary tree was constructed by the N-J method. [Results] The results showed that the positive rate of B19 DNA in Lanzhou was 0.30%, and the positive population mainly consisted of female individuals aged 18-30 years old who were first-time blood donors; furthermore, genotype 1a was identified as predominant. [Conclusion] The positive rate of B19 DNA is low among blood donors in Lanzhou, with genotype 1a being predominant. It is recommended to periodically monitor the B19 prevalence in blood donors and enhance prevention and control measures, thus improving blood quality and safety.

Objective To report cases of checkpoint inhibitor pneumonitis （CIP） in patients with advanced biliary tract cancer, aiming to provide additional approaches for the assessment, treatment, and monitoring of this condition. Methods Three patients developed oxygen desaturation and interstitial lung lesions during chemotherapy combined with immunotherapy, and were diagnosed with CIP in collaboration with the respiratory department. Antitumor therapy was discontinued in the acute phase, and glucocorticoids were administered, with regular monitoring of disease progression. During follow-up, case 1 developed lung metastasis; case 2 showed improvement; case 3 had concurrent infection and tumor progression. Results Glucocorticoids improved lung lesions and hypoxic symptoms in patients with CIP, but attention should be paid to the potential for concurrent infections and tumor progression. Conclusions Comprehensive assessment and early identification of CIP are crucial for patients with advanced biliary tract cancer. For those with recurrent symptoms after glucocorticoid therapy, timely and accurate adjustment of the treatment regimen is essential.

Breast cancer remains a substantial threat to women's health and is one of the most prevalent malignant tumors in women.Because breast cancer onset is closely associated with female physiological characteristics,this article proposes that breast cancer be classified as a"women's miscellaneous diseases"and that its treatment be explored from this perspective.Drawing from Chapter 8 on Golden Chamber of Prescriptions for Miscellaneous Diseases in Women of Synopsis of Golden Chamber,the initial pathogenesis of breast cancer is associated with"emotional stress,improper lifestyle,deficiency,cold,and stagnation."The fundamental mechanism behind its formation is"blood cold accumulation and hardened masses."Specifically,emotional imbalance and improper lifestyle habits contribute to the combined invasion of the uterus by"deficiency,""accumulated cold,"and"stagnant qi."Over time,"cold-blood stasis accumulates at the uterine ostium,"and the cold and the stasis ascends from the uterus along the thoroughfare and conception vessels,obstructing the breast collaterals.This combination of yang qi stagnation and yin cold congealment,ultimately leads to the development of breast cancer.The treatment principle should focus on"activating yang and dispersing cold."A therapeutic approach centered on Wenjing Decoction combined with Xiaoyao Powder can be adapted based on the stage and type of breast cancer while also considering the dynamic interplay between pathogenic factors and healthy qi,along with shifts in deficiency and excess patterns of disease.By adhering to the principles of consistency and flexibility and integrating disease and syndrome differentiation,the goal is to develop precise and personalized treatment strategies to improve clinical outcomes.

Objective To examine the serological and molecular prevalence as well as genotype characteristics of human Parvovirus B19 blood donors in Lanzhou,and to provide evidence for developing a screening strategy to reduce the risk of blood transfusion transmission.Methods A total of 5 722 blood samples collected from Lanzhou blood donors from April 2023 to October 2023 were tested for B19 DNA using real-time quantitative PCR(qRT-PCR).Additionally,383 samples were screened for anti-B19 IgG and anti-B19 IgM using synchronous enzyme-linked immunoassay(ELISA).Viral load and VP1 sequencing were conducted on the B19 DNA-positive samples and the Neighbor-Joining(N-J)method was used to construct an evolutionary tree for the sequenced samples.Results The prevalence of human Parvovirus B19 DNA,IgG antibody and IgM antibody was 0.47%(27/5 722),25.59%(98/383)and 0.26%(1/383),respectively,and the samples positive for B19 DNA,IgG antibody and IgM antibody were 0.26%(1/383).The co-positivity rate for B19 DNA and IgG antibody was 6.27%(24/383),while the positivity rates for B19 DNA or IgG antibody alone were 0.52%(2/383)and 19.06%(73/383),respectively.Viral loads ranged from 4.24 IU/ml to 5.67×102 IU/ml,all below 104 IU/ml.There was no statistical significance in the positive rate of B19 DNA in gender(χ2=0.86,P=0.35),but there was statistical significance in the positive rate of B19 DNA among all age groups(χ2=8.00,P=0.02).The highest positive rate of B19 DNA was 0.65%in the 18～30 age group.There was statistical significance in the positive rate of B19 IgG antibody in gender(χ2=5.03,P=0.02),but there was no statistical significance in the positive rate of B19 IgG antibody among all age groups(χ2=0.51,P=0.77).The highest positive rate of B19 IgG antibody was 29.09%in the age group of 41 to 60.There was no significant difference in the positive rate of B19 IgM antibody in gender(χ2=2.84,P=0.09).The highest positive rate of B19 IgM was 3.85%in the age group of 18～30 years old.Based on the VP1 sequence,the phylogenetic tree revealed that B19 strains in Lanzhou formed a distinct cladistic lineage within genotype 1,predominantly represented by genotype 1b.Conclusion The prevalence of B19 DNA and IgM antibodies among blood donors in the Lanzhou area is low,and so is the viral load.Therefore the risk of transmitting B19 through blood transfusion is relatively small.Since the prevalence of B19 IgG antibody is high,it is suggested to closely monitor the transmission situation in the area,regularly monitor the prevalence of B19 among blood donors,and track the situation of B19 DNA-positive blood donors to recipients to ensure the safety of clinical blood transfusion.

Objective:Due to the large number of patents, wide distribution of technical fields, limited management resources, differences in the nature of different patent holders and so on, this study aims to find a fast and reliable evaluation mechanism for identifying the quality and transfer potential of patents supported by the fund.Methods:Through literature review, expert consultation, analysis and discussion of existing mechanisms and technical issues in the field of patent evaluation, we further determined patent evaluation mechanisms and their primary indicators with better applicability.Results:A drafting mechanism was proposed, that patents which had not yet found evidence of fatal evaluation or have abandoned evaluation can be temporarily given a reliable quality evaluation.Conclusions:Compared with high cost methods such as patent invalidation or infringement investigation, there are more economical and efficient negative evaluation indicators, which make different evaluation tool users to believe that patents do not have conversion value when negative evidence is found. It can also enable different evaluation tool users to temporarily give reliable evaluations of patent conversion prospects based on a hypothetical mechanism without discovering negative evidence temporarily. This evaluation mechanism is suitable for assessing patent quality and conversion potential, and is more scientific and efficient.

Objective:To explore the latent categories of sleep quality in shift nurses using latent profile analysis, and analyze the characteristics and influencing factors of each category.Methods:A convenience sampling method was used to select 1 480 shift nurses from three ClassⅢ Grade A hospitals in Fuyang city from January to February 2024. Data were collected using a general information questionnaire, Pittsburgh Sleep Quality Index, Perceived Stress Scale, and the Morningness-Eveningness Questionnaire-5. Latent profile analysis was performed to identify the latent categories of sleep quality, and multivariate logistic regression analysis was used to explore the influencing factors of different sleep quality categories. In this study, a total of 1 480 questionnaires were distributed. After excluding 28 invalid questionnaires, 1 452 valid questionnaires were retrieved, the effective recovery rate of the questionnaires was 98.11%.Results:The sleep quality of 1 452 shift nurses was classified into four latent categories: 44.5% (647/1 452) were in the "sleep impairment" category, 44.6% (648/1 452) in the "good sleep" category, 4.0% (58/1 452) in the "difficulty falling asleep-low efficiency" category, and 6.8% (99/1 452) in the "sleep disorder-medication-induced sleep" category. Multivariate logistic regression analysis revealed that perceived stress, monthly night shift frequency, sleep timing, daytime napping, and years of work experience were significant influencing factors for sleep quality ( P<0.05) . Conclusions:Sleep quality among shift nurses shows heterogeneity. Nursing managers should develop tailored management strategies and implement targeted sleep hygiene interventions based on nurses' sleep quality characteristics to improve their sleep quality.

Objective:To explore the latent categories of sleep quality in shift nurses using latent profile analysis, and analyze the characteristics and influencing factors of each category.Methods:A convenience sampling method was used to select 1 480 shift nurses from three ClassⅢ Grade A hospitals in Fuyang city from January to February 2024. Data were collected using a general information questionnaire, Pittsburgh Sleep Quality Index, Perceived Stress Scale, and the Morningness-Eveningness Questionnaire-5. Latent profile analysis was performed to identify the latent categories of sleep quality, and multivariate logistic regression analysis was used to explore the influencing factors of different sleep quality categories. In this study, a total of 1 480 questionnaires were distributed. After excluding 28 invalid questionnaires, 1 452 valid questionnaires were retrieved, the effective recovery rate of the questionnaires was 98.11%.Results:The sleep quality of 1 452 shift nurses was classified into four latent categories: 44.5% (647/1 452) were in the "sleep impairment" category, 44.6% (648/1 452) in the "good sleep" category, 4.0% (58/1 452) in the "difficulty falling asleep-low efficiency" category, and 6.8% (99/1 452) in the "sleep disorder-medication-induced sleep" category. Multivariate logistic regression analysis revealed that perceived stress, monthly night shift frequency, sleep timing, daytime napping, and years of work experience were significant influencing factors for sleep quality ( P<0.05) . Conclusions:Sleep quality among shift nurses shows heterogeneity. Nursing managers should develop tailored management strategies and implement targeted sleep hygiene interventions based on nurses' sleep quality characteristics to improve their sleep quality.

Objective To investigate the clinical efficacy of the"dynamic and static combination"approach in the treatment of Hepple Ⅰ-Ⅲ type osteochondral lesions of the talus(OLT),utilizing external ankle shaking,pulling,and poking manipulations in conjunction with ankle brace fixation.Methods A total of 82 patients diagnosed with OLT,who sought treatment at four hospitals between June 2022 and December 2023,were included in the study.Both the experimental and control groups received ankle immobilization using braces through-out the treatment period.The control group was administered Voltaren Emulgel topically twice daily(morning and evening),with each treatment course lasting 30 days,for a total of one course.The experimental group received additional therapeutic intervention involving shaking,pulling,and poking manipulations,conducted twice weekly,with the same duration and number of treatment courses as the control group.Follow-up assessments were scheduled at 2 weeks,4 weeks,and 2 months post-treatment.Outcome measures included the pain rating index(PRI),visual analogue scale(VAS)for pain intensity,current pain intensity(PPI),American Orthopaedic Foot & Ankle Society(AOFAS)ankle and hindfoot scores,proprioceptive function,and the size of OLT.Results During the longitudinal assessment conducted at 2-week,4-week,and follow-up intervals,the experimental group exhibited superior clinical outcomes compared to the control group,with statistically significant decreases in PRI,PPI,and AOFAS scores(all P＜0.05).VAS scores showed progressive improvement over time,with significant intergroup differences observed at both the 4-week and follow-up assessments(P＜0.05).Biomechanical analysis performed post-intervention indicated improved kinematic repositioning accuracy in the experimental group,as reflected by significantly reduced active-passive error angles(P＜0.05).Importantly,measurements of OLT area revealed notable therapeutic effects in the experimental group(P＜0.05),whereas no statistically significant changes were observed in the control group throughout the study period(all P＞0.05).Conclusions Under the guidance of the"dynamic and static combination"concept,the integration of shaking,pulling,and poking manipu-lation with conventional Western medicine-based conservative treatment for OLT demonstrates more pronounced advantages in alleviating pain,improving ankle joint function,restoring proprioception,facilitating lesion recovery,and enhancing overall quality of life.

Objective:Due to the large number of patents, wide distribution of technical fields, limited management resources, differences in the nature of different patent holders and so on, this study aims to find a fast and reliable evaluation mechanism for identifying the quality and transfer potential of patents supported by the fund.Methods:Through literature review, expert consultation, analysis and discussion of existing mechanisms and technical issues in the field of patent evaluation, we further determined patent evaluation mechanisms and their primary indicators with better applicability.Results:A drafting mechanism was proposed, that patents which had not yet found evidence of fatal evaluation or have abandoned evaluation can be temporarily given a reliable quality evaluation.Conclusions:Compared with high cost methods such as patent invalidation or infringement investigation, there are more economical and efficient negative evaluation indicators, which make different evaluation tool users to believe that patents do not have conversion value when negative evidence is found. It can also enable different evaluation tool users to temporarily give reliable evaluations of patent conversion prospects based on a hypothetical mechanism without discovering negative evidence temporarily. This evaluation mechanism is suitable for assessing patent quality and conversion potential, and is more scientific and efficient.