Objective: To investigate the distribution characteristics of previous infection of human parvovirus B19(HPV B19) among blood donors in Xi 'an, and to provide data support and theoretical basis for formulating individualized and precise blood screening strategies. Methods: A total of 970 qualified blood samples tested at Shaanxi Blood Center from August to September 2024 were randomly selected. The levels of HPV B19 IgG antibodies in the serum were detected by enzyme-linked immunosorbent assay (ELISA). The distribution characteristics of the samples were analyzed from the perspectives of age, gender, education level, occupation, blood type and region. Results: The positive rate of HPV B19 IgG antibodies among blood donors in Xi 'an was 25.26%(245/970), which increased gradually with age (P<0.05). There was no significant difference in the positive rate of HPV B19 IgG antibodies among blood donors of different genders, education levels, occupations, or blood types (P>0.05). Univariate logistic regression analysis showed that past HPV B19 infection was only related to age (P<0.05). The distribution of positive blood samples in 13 districts and counties of Xi 'an was counted based on the blood collection sites. The results showed that there was no significant global spatial autocorrelation in the distribution of positive samples. Among them, the Weiyang District and Beilin District exhibited a "high-high" cluster (P<0.05), while Chang'an District exhibited a "low-high" cluster (P<0.01). Conclusion: A certain proportion of blood donors in Xi'an showed past infection with HPV B19, which was only correlated with age and demonstrated an upward trend. It is recommended to continue expanding the screening scope and incorporate screening for this virus in blood transfusion processes involving susceptible populations.

Objective To investigate the therapeutic effects of bone marrow mesenchymal stem cells (BMSCs) for radiation-induced lung injury (RILI) and the underlying mechanism. Methods Forty-five healthy adult male C57BL/6 mice were randomly divided into control, model, and BMSCs groups. The model and BMSCs groups received a single irradiation dose of 20 Gy to the chest, while the control group did not receive X-ray irradiation. For the BMSCs group, an injection of 1 × 10⁶ BMSCs cells was administered via the tail vein within 6 h after irradiation. In the 5th week, the lung tissue was taken to observe pathological changes with HE staining; examine the expression of the inflammatory factors interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α) with immunohistochemical staining; observe the polarization of macrophages with immunofluorescence staining; and measure the expression of the epithelial-mesenchymal transition markers E-cadherin, N-cadherin, and vimentin proteins by Western blot. Results After radiation, the model group developed pulmonary vasodilation and congestion with septal thickening and inflammatory cell infiltration, and these changes were markedly reduced in the BMSCs group. The model group showed significantly down-regulated expression of IL-6 and TNF-α compared with significantly increased levels in the model group (P < 0.01, P < 0.05). Treatment with BMSCs significantly increased the polarization of lung macrophages towards the M2 type, while significantly decreasing the abnormally increased N-cadherin and vimentin levels in RILI mice (P < 0.05, P < 0.01). Conclusion BMSCs have therapeutic effects for RILI mice, which may be through promoting macrophage polarization from M1 to M2.

Objective To investigate the role of hydrogen therapy in reducing radiation-induced lung injury and the specific mechanism. Methods Forty C57BL/6 mice were randomly divided into four groups: normal control group, model group, hydrogen therapy group I, and hydrogen therapy group II. A mouse model of radiation-induced lung injury was established. The pathological changes in the lung tissue of the mice were examined with HE staining. Immunofluorescence staining was used to detect the expression of surface markers of M1 and M2 macrophages to observe macrophage polarization. The expression of interleukin (IL)-6, tumor necrosis factor-α (TNF-α), and IL-10 in the lung tissue was measured by immunohistochemistry. The expression of nuclear factor-kappa B (NF-κB) p65 and phosphorylated NF-κB (P-NF-κB) p65 was measured by Western blot. Results HE staining showed that compared with the control group, the model group exhibited alveolar septal swelling and thickening, vascular dilatation and congestion, and inflammatory cell infiltration in the lung tissue; the hydrogen groups had significantly reduced pathological damage and inflammatory response than the model group, with more improvements in hydrogen group II than in hydrogen group I. Immunohistochemical results showed that compared with those in the control group, the levels of the inflammatory cytokines IL-6 and TNF-α were significantly increased in the model group; the hydrogen groups showed significantly decreased IL-6 and TNF-α levels and a significantly increased level of the anti-inflammatory factor IL-10 than the model group, which were more marked in hydrogen group II than in hydrogen group I. Immunofluorescence results showed that compared with the control group, the expression of the surface marker of M1 macrophages in the model group was significantly upregulated; the hydrogen groups showed significantly downregulated M1 marker and significantly upregulated M2 marker, and hydrogen group II showed significantly increased M2 marker compared with hydrogen group I. Western blot results showed that compared with that in the control group, the ratio of P-NF-κB p65/NF-κB p65 in the model group was significantly increased; the P-NF-κB p65/NF-κB p65 ratio was significantly reduced in the hydrogen groups than in the model group, and was significantly lower in hydrogen group II than in hydrogen group I. Conclusion Hydrogen inhalation therapy may reduce the inflammatory response of radiation-induced lung injury by inhibiting the NF-κB signaling pathway to promote the polarization of the macrophage M1 subtype to the M2 subtype.

Acute kidney injury(AKI)is a global public health problem with high morbidity,high mortality and costly treatment cost.The pathogenesis of AKI is very complex,and the treatment strategies for AKI are lim-ited,then it is very matter to explore the pathophysiological mechanism and potential therapeutic targets of acute kidney injury.N6-methyladenosine(m6A)is the most abundant and extremely conservative epigenetic modification in eukaryotic,which is a dynamic and reversible process involving in splicing,nuclear export,translation,stabil-ity,and higher structure of RNA,and regulated by three regulatory factors:methyltransferase,demethylase and methylated reading protein.Current studies have found that m6A plays an important regulatory role in AKI and can be a potential therapeutic target for AKI.In this review,we provide a brief description of m6A and summarize the impact of m6A on AKI and possible future study directions for this research.

Objective:To explore the potential categories of post-traumatic stress disorder (PTSD) trajectories in women with multiple in vitro fertilization-embryo transfer (IVF-ET) failures, and to analyze the effects of different demographic characteristics and psychological factors on the potential categories of PTSD trajectories.Methods:This was a prospective empirical research, from May 2021 to October 2022, women with IVF-ET failure ≥ 2 times in the reproductive department of Shanghai First People′s Hospital from May 2021 to October 2022 were selected as the research objects. Post-traumatic stress disorder civilian version scale was used for 4 follow-ups at 3 d (T1), 10 d (T2), 20 d (T3) after the last transplantation failure and 3 d before the next transplantation cycle (T4). Telephone follow-up and online follow-up were combined to obtain the PTSD level at 4 time points. Potential categories of PTSD score trajectories at four time points were identified using a latent category growth model, and analyze influencing factors using unordered multi classification logistic analysis.Results:Totally 196 IVF-ET women were admitted, aged (29.42 ± 4.13) years. Three PTSD trajectories were fitted in this study, including 82 cases (42%) in non-PTSD group, 61 cases (31%) in mild PTSD group and 53 cases (27%) in elevated PTSD group. Logistic regression analysis showed that age, education level, fertility pressure and marital adjustment level were the predictors of PTSD trajectory in women with multiple IVF-ET failures. Compared with the non-PTSD group, women aged ≥35 years, with lower education level and marital adjustment level were more likely to enter the elevated PTSD group ( OR=4.570, 8.540, 0.949, all P<0.05). Women aged 35 years and with greater reproductive pressure were more likely to enter the mild PTSD group ( OR=3.871, 1.063, both P<0.05). Conclusions:There is group heterogeneity in the trajectories of PTSD in women with multiple IVF-ET failures in the next transplantation cycle. Old age, low education level, high fertility pressure and poor marital adjustment can predict the trajectories of PTSD. Fertility stress and marriage adjustment are changeable variables. Medical staff can relieve women′s fertility pressure through health education and mindfulness intervention, promote a good state of marriage adjustment, and minimize the adverse effects of PTSD on the next cycle of conception.

Objective:To understand the prevalence of psychoactive substance use and its related factors in young men who have sex with men (YMSM) in Tianjin.Methods:From September 2017 to December 2022, a face-to-face anonymous questionnaire survey was conducted in MSM aged 16-24 years selected by snowball sampling in Tianjin, the main demographic and behavioral information of the YMSM were collected, and blood samples were collected from them for HIV test. Multivariate logistic regression analysis was used to identify related factors of psychoactive substances use.Results:A total of 2 919 YMSM were included in the study, in whom 47.1% (1 374/2 919) had ever used psychoactive substances. The rate of psychoactive substance use in YMSM who were not students was 51.6% (853/1 653), which was higher than that (41.2%, 521/1 266) in YMSM who were students ( χ2=31.42, P<0.001). In the YMSM who were not students, multivariate analysis showed that the OR of psychoactive substance use was 1.49 times higher in smokers than in non-smokers (95% CI: 1.17-1.84), 4.14 times higher in those who had anal sex in the past six months than in those who had no anal sex (95% CI: 1.71-9.98), 1.65 times higher in those who had ≥3 anal intercourses in the last week than in those who had <3 anal intercourses (95% CI: 1.27-2.14), 1.99 times higher in those who had commercial sex in the past six months than in those who had no homosexual commercial sex (95% CI: 1.14-3.45), 2.37 times higher in those who had HIV test in the last year than in those who had no HIV test (95% CI: 1.90-2.94), 1.89 times higher in those who had STD diagnosis in the last year than in those who had no STD diagnosis (95% CI: 1.11-3.21), 0.66 times higher in those who had the first homosexual sex at age ≥20 years than in those who had the first homosexual sex at age <20 years (95% CI: 0.52-0.83), 0.48 times higher in those who were heterosexual or bisexual than in those who were homosexual (95% CI: 0.30-0.74) and 0.70 times higher in those who mainly searched sexual partners offline than in those who mainly searched sexual partners online (95% CI: 0.53-0.94). Meanwhile, in the YMSM who were students, multivariate analysis showed that the OR of psychoactive substance use was 1.31 times higher in local residents than in non-local residents (95% CI: 1.02-1.69), 1.61 times higher in smokers than in non-smokers (95% CI: 1.14-2.27), 1.52 times higher in those who had ≥3 anal intercourses in the last week than in those who had <3 anal intercourses (95% CI: 1.05-2.19), 3.31 times higher in those who had STD diagnosis in the last year than in those who had no STD diagnosis (95% CI: 1.68-6.50) and 0.53 times higher in those in Han ethnic group than in those in minor ethnic groups (95% CI: 0.30-0.94). Conclusions:The prevalence of psychoactive substance use was high in YMSM in Tianjin, and the influencing factors varied in different groups (students or not). It is necessary to conduct targeted interventions for different groups.

Intravascular large B-cell lymphoma(IVLBCL)is an aggressive extranodal large B-cell lymphoma,cocurrence in the same organ with other malignancies is very rare,especially in the lung.Here,we report a rare case of lung adenocarcinoma with IVLBCL.The patient was admitted to the hospital due to diarrhea associated with fever and cough.A computed tomography(CT)scan of the chest showed an irregular patchy high-density shadow in the upper lobe of the right lung with ground-glass opacity at the margin.After admission,the patient was given anti-infection treatment,but still had inter-mittent low fever(up to 37.5 oC).The pathological diagnosis of percutaneous lung biopsy(PLB)was lepidic-predominant ad-enocarcinoma with local infiltration,which was proved to be invasive nonmucinous adenocarcinoma of the lung with IVLBCL after surgery.This paper analyzed the clinicopathological characteristics and reviewed the relevant literature to improve the knowledge of clinicians and pathologists and avoid missed diagnosis or misdiagnosis.

Objective:To explore the research hotspots and development trends of mobile health technology applications among family caregivers using bibliometric methods, providing a reference for related studies.Methods:The Web of Science Core Collection was selected as the data source, and research on mobile health technology in family caregivers published from January 1, 2005, to August 31, 2023, was retrieved. Excel, Scimago Graphica, and CiteSpace software were used to create network maps of countries, institutions, authors, and keywords, exploring research hotspots and development trends in this field.Results:A total of 475 relevant articles were included, showing an overall upward trend in annual publication volume. The United States had the highest publication volume (173 articles), with the most influential author and the institution with the highest publication volume being Sin and the University of Washington, respectively. Current research hotspots included chronic diseases, mental health, and social support, while future research trends focus on in-depth studies, artificial intelligence, and enhancing network information security.Conclusions:Research on the application of mobile health technology among family caregivers is on the rise, mainly focusing on assisting caregivers in managing chronic diseases, improving their mental health, and enhancing their social support. Future research frontiers may include optimizing and refining digital health technologies, using artificial intelligence to predict and alleviate caregiver burden, and enhancing industry regulation and data security.

Objective:To observe the clinical efficacy of herb-insulated moxibustion on the Governor Vessel in dog days of summer for postpartum pantalgia. Methods:A total of 64 patients with postpartum pantalgia were randomized into an observation group and a control group,with 32 cases in each group.Both groups were treated with herb-insulated moxibustion on the Governor Vessel.The control group was treated in non-dog days,and the observation group was treated in dog days of summer.Both groups were treated with moxibustion once every 3 d,3 times as one course of treatment,for a total of 3 courses.The range and degree of pain were evaluated by the 45-region body surface area score and visual analog scale(VAS)score before treatment,after treatment,1 month after treatment,and around the Winter Solstice.The revised fibromyalgia impact questionnaire(FIQR)was used to evaluate the quality of life of the patients.The clinical efficacy was compared between the two groups after treatment. Results:During the trial,there were 2 dropout cases in the observation group,and 2 cases were eliminated from the control group.After treatment,the total effective rate in the observation group was 93.3%,which was higher than 76.6%in the control group(P<0.05).Compared with before treatment,the number of pain sites and pain areas of the patients in both groups decreased after treatment,1 month after treatment,and around the Winter Solstice(P<0.05),and the FIQR score decreased(P<0.05).The score of each item in the observation group was lower than that in the control group(P<0.05).Compared with before treatment,the VAS score in the observation group decreased after treatment,1 month after treatment,and around the Winter Solstice(P<0.01),and was lower than that in the control group at the same time point(P<0.05). Conclusion:Herb-insulated moxibustion on the Governor Vessel can improve the range and degree of pain in patients with postpartum pantalgia and improve their quality of life.The total efficacy of the moxibustion performed in dog days is superior to that in non-dog days,and the effect lasts longer.

[This corrects the article DOI: 10.1016/j.apsb.2021.03.002.].