Objective To investigate the seroprevalence of antibody against Toxoplasma gondii among patients with hematological malignancies, and compare it with that among health individuals, so as to provide insights into unraveling the pathogenesis of hematological malignancies. Methods A total of 225 patients with hematological malignancies in Department of Hematology, Xuzhou Central Hospital and 300 healthy individuals in the same hospital were enrolled from 2017 to 2024. Blood samples were collected from all subjects, and the serum IgG and IgM antibodies against T. gondii were detected using chemiluminescent immunoassay. Demographic and clinical features were collected from patients with hematological malignancies, including gender, age, contact with cats, consumption of raw or undercooked meat, type of malignancy, clinical symptoms, blood transfusion and treatment, and the seroprevalence of anti-T. gondii antibody was compared among patients with different characteristics. Results The age (t = 0.72, P > 0.05) and gender (χ² = 0.93, P > 0.05) were compared between patients with hematological malignancies and healthy individuals. The seroprevalence of T. gondii infection was 20.89% among patients with hematological malignancies and 4.33% among healthy individuals (χ² = 34.81, P < 0.01), and the seroprevalence of anti-T. gondii IgG antibody was 20.89% among patients with hematological malignancies and 4.33% among healthy individuals (χ² = 34.81, P < 0.01), while there was no significant difference in the seroprevalence of anti-T. gondii IgM antibody between patients with hematological malignancies and healthy individuals (1.33% vs. 0; corrected χ² = 2.02, P > 0.05). The seroprevalence of T. gondii infection was 23.08% among patients with leukemia, 16.67% among patients with lymphoma, 19.23% among patients with multiple myeloma, 24.00% among patients with myeloproliferative neoplasm, and 26.09% among patients with myelodysplastic syndrome (χ² = 1.44, P > 0.05), and was all higher than among healthy individuals (corrected χ² = 23.92, 10.74, 13.76, 12.84 and 14.54; all P values < 0.01). In addition, there were no significant differences in the detection of anti-T. gondii antibody among patients with hematological malignancies in terms of gender, age, contact with cats, consumption of raw or undercooked meat, chemotherapy or blood transfusion (χ² = 0.76, 1.97, 0, 2.81, 2.38 and 0.66; all P values > 0.05). Conclusions There is a high risk of T. gondii infection among patients with hematological malignancies, and intensified surveillance of T. gondii infection is recommended among patients with hematological malignancies.

Background At present, high level of depression is a serious problem in medical staff and may affect their immune function. The role of psychological resilience between depression and immunity cannot be ignored. However, it is still lack of research report in this area. Objective To explore the mediating effect of psychological resilience on the association between depression and humoral immunological biomarkers in medical staff. Methods A total of 108 medical staff from a tertiary hospital in Henan Province were selected using stratified cluster sampling from September 2022 to December 2022. The Connor-Davidson Resilience Scale and Patient Health Questionnaire-9 were used to evaluate their psychological resilience and depression. Serum immunoglobulin (Ig) M (IgM), IgG, IgA, complement 3 (C3), and complement 4 (C4) were detected in fasting venous blood samples. Mann-Whitney U test, Kruskal-Wallis H test, independent-samples t-test, and One-way ANOVA were used for comparisons among different demographic groups. Spearman correlation was used to evaluate correlations among measured variables. PROCESS plug-in was used to verify potential mediating effect of psychological resilience on the relationship between depression and humoral immunological biomarkers. Results The M (P₂₅, P₇₅) score of psychological resilience was 65.50 (53.25, 75.00) in the participating medical staff. The ratios of low, medium, and high levels of psychological resilience were 2.78% (3/108), 51.85% (56/108), and 45.37% (49/108), respectively. The M (P₂₅, P₇₅) score of depression was 6.00 (2.00, 8.00). The positive rate of depression was 61.11% (66/108). The correlation analysis results showed that psychological resilience was negatively correlated with depression and serum complement C3 (r=−0.416 and −0.309, P＜0.01), positively correlated with serum IgG and serum IgA (r=0.302 and 0.517, P＜0.01); optimism, self-improvement, and resilience were negatively correlated with depression (r=−0.387, −0.446, and −0.312, P<0.01), positively correlated with IgG (r=0.194, 0.284, and 0.239, P<0.05), and positively correlated with IgA (r=0.377, 0.378, and 0.444, P<0.01), respectively; resilience was negatively correlated with C3 (r=−0.304, P<0.01), and depression was negatively correlated with serum IgG and serum IgA (r=−0.516 and −0.522, P＜0.01), positively correlated with serum complement C3 (r=0.195, P＜0.05). The mediating effect test showed that psychological resilience showed mediating effects on the relationship between depression and serum IgA and serum complement C3, with mediating effect values of −0.148 (95%CI: −0.051, −0.012) and 0.111 (95%CI: 0.001, 0.010), and their mediating effect ratios were 28.30% and 56.92%. Conclusion The mental health status of the target medical staff is not optimistic. Depression is associated with changes in some humoral immunological biomarkers. Psychological resilience can mediate the correlations between depression and humoral immunological biomarkers. The managers should take measures to improve the levels of psychological resilience and promote the physical and mental health of medical staff.

Background As one of the key populations in the prevention and treatment of iodine deficiency disorders, it is important to continuously monitor the iodine nutritional level of school-age children. The current reference interval for thyroid volume in China is based on age only, without taking into account differences in individual developmental levels, and the distribution of thyroid volume may vary regionally due to economic, demographic, and environmental factors. The current reference cut-off points for thyroid volume proposed by the World Health Organization are not based on the Chinese population. Objective To understand the iodine nutritional status and distribution of thyroid volume (Tvol) among children aged 8-10 years in Huangpu District, Shanghai, China, to identify impact factors of Tvol, and to propose a reference range upper limit for local thyroid health surveillance, so as to provide a basis for goiter control and prevention. Methods Six hundred children aged 8-10 years in Huangpu District were recruited in 2017, 2020, and 2023, and body height, weight, thyroid volume, urinary iodine, and iodine content of household edible salt were determined. A multilevel model was constructed using population density and area as regional variables, and age, body surface area (BSA), and body mass index (BMI) as potential impact factors for at the individual level, to assess their effects on thyroid volume. Quantile regression of thyroid volume was performed, and the 98th percentile (P₉₈) of thyroid volume was predicted based on age and BSA. Results The iodized salt coverage in the households of surveyed children in 2017, 2020, and 2023 was 72.0%, 57.0%, and 48.0%, respectively, and the iodized salt coverage decreased by year (χ²=24.31, P<0.001). The urinary iodine level of children in 2017 was higher than that in 2020 and 2023 (χ²=18.77, P<0.001). The Tvol medians of children in 2017, 2020, and 2023 were 2.29, 2.49, and 2.97 mL, respectively, and the Tvol increased by year (χ²=60.04, P<0.001). The proportion of goiter was higher in children in 2023 than in 2017 and 2020 (χ²=6.57, P<0.05). Sex differences were not statistically significant for urinary iodine levels, thyroid volume, and goiter. The median Tvol was 2.26, 2.58, and 2.76 mL in children of 8, 9, and 10 years old respectively, and the Tvol increased with age (χ²=49.02, P <0.001). Tvol was positively correlated with age, BSA, and BMI with correlation coefficients of 0.2846, 0.3723, and 0.2950, respectively. The final quantile regression model showed that the strongest effect of BSA was associated with the 98th percentile of Tvol. Multilevel models considering population density or area as regional variables failed to achieve convergence. Conclusion To establish the upper limit of the reference interval for thyroid volume of healthy children in Huangpu District, the effects of age and BSA should be considered at the individual level, and the upper limit of the normal interval for goiter screening is suggested to be the 98th percentile value of BSA at the same age. In addition, the adaptability of population density and regional area as indicators of regional aggregation of thyroid volume distribution still needs to be further explored.

Angiotensin-converting enzyme 2 (ACE2) is known for its role in regulating blood pressure and electrolyte balance, but it has also been identified as the functional receptor for coronaviruses.With the global spread of corona virus disease 2019, the role of ACE2 across different age groups, particularly in children, has garnered increasing attention.Studies indicate that the distribution of ACE2 in the respiratory systems of children and adults differs significantly, which implies a distinct functional role in pediatric respiratory diseases.This paper reviews the latest research progress on ACE2 in children′s diseases such as corona virus disease 2019, acute respiratory distress syndrome, community-acquired pneumonia, and asthma.

Escherichia coli(E.coli)is a key pathogenic bacterium responsible for postpartum endo-metritis,with its colonization in the reproductive tract closely associated with endometrial damage and disruption of the ovarian cycle.This ultimately leads to infertility,causing significant economic losses to the dairy industry.Macrophages play a pivotal role in the inflammatory response.This study aims to investigate the mRNA expression profile of bovine bone marrow-derived macropha-ges following E.coli infection using RNA sequencing(RNA-seq)technology.Additionally,it seeks to identify the biological functions and signaling pathways of differentially expressed genes(DEGs)through Gene Ontology(GO)and Kyoto Encyclopedia of Genes and Genomes(KEGG)enrichment analyses.The results demonstrated that E.coli infection induced differential expression of 4 522 genes,with 2 141 upregulated and 2 381 downregulated.These genes were primarily asso-ciated with inflammatory responses,where TLR2,TLR4,NLRP3,and PTGS2 played pivotal roles.PGD2 synthesis was mediated by TLR2,TLR4,and NLRP3.Transcriptome sequencing of bovine bone marrow-derived macrophages infected with E.coli and treated with a PGD2 inhibitor revealed a marked downregulation of TLR2 and TLR4 gene expression.qPCR validation results were highly consistent with the RNA-seq findings.This study elucidates the interactive regulatory roles of TLR2,TLR4,and NLRP3 in conjunction with PGD2,which collectively modulate bovine endome-tritis.These findings offer significant molecular insights that enhance our understanding of the pathological mechanisms underlying bovine endometritis,thereby informing its prevention and treatment strategies.

Osteoporosis(OP)is a prevalent metabolic bone disease with a complex pathogenesis that has not yet been fully elucidated.Recent studies have revealed that the Toll-like receptor 4(TLR4)signaling pathway plays a significant role in the development and progression of OP.TLR4,a crucial immune receptor primarily expressed in immune cells,is involved in inflammatory responses and immune regulation.The TLR4 signaling pathway influences bone metabolism and remodeling through multiple mechanisms.Therefore,investi-gating the role of the TLR4 signaling pathway in OP is of great significance for its prevention and treatment.Re-search targeting the TLR4 signaling pathway provides novel insights and approaches for OP therapy.Future studies should further explore the mechanisms of the TLR4 signaling pathway,develop therapeutic agents that modulate this pathway,and validate their efficacy in OP through clinical trials,thereby offering more options for the clinical management of OP.

Objective To explore the effect of low density lipoprotein-cholesterol(LDL-C)on the diameters of retinal arteries and veins in patients with type 2 diabetes mellitus(T2DM).Methods A total of 102 patients with T2DM who treated in Quanzhou First Hospital Affiliated to Fujian Medical University from January to September 2024 were selected and divided into Group A(LDL-C＜2.6mmol/L,35 cases),Group B(2.6mmol/L≤LDL-C＜3.4mmol/L,33 cases)and Group C(LDL-C≥3.4mmol/L,34 cases)according to the LDL-C level.The clinical data and color fundus photos of the patients were collected.The superior temporal retinal arteriolar equivalent(RAE)and superior temporal retinal venular equivalent(RVE)in the left eye of patients were measured,and the ratio of arteriovenous diameters(AVR)was calculated.The correlation between LDL-C levels and retinal vascular diameters was analyzed.Results There were statistically significant differences in levels of total cholesterol and triglycerides,as well as the proportions of patients with coronary heart disease and diabetic retinopathy(DR)among the three groups(P＜0.05).With the progression of DR,the level of LDL-C gradually increases(P＜0.05).There were statistically significant differences in RAE and AVR among patients with different DR stages(P＜0.05).There were statistically significant differences in RAE and AVR among three groups of patients(P＜0.05).Correlation analysis showed that RAE and AVR were negatively correlated with LDL-C(P＜0.05).Conclusion With the increase of LDL-C level,the degree of DR aggravates,and RAE and AVR decrease accordingly.However,there is no significant correlation between LDL-C and RVE.

Objective To explore the relationship between the triglyceride glucose(TyG)index and 2-year cognitive function changes.Methods A total of 101 elderly patients who were hospitalized at Quanzhou First Hospital Affiliated to Fujian Medical University from September to December 2022 were selected.The cognitive function was evaluated using Montreal cognitive assessment(MoCA)scale.According to the baseline TyG index,the subjects were divided into high TyG index group(TyG index≥ 8.79,51 cases)and low TyG index group(TyG index＜8.79,50 cases).Using a binary Logistic regression model to adjust for confounding factors,the association between TyG index and cognitive decline was analyzed.Results The Spearman correlation analysis results showed that TyG index was negatively correlated with the change value of cognitive function(r=-0.243,P＜0.05).The incidence of cognitive function decline in high TyG index group was significantly higher than that in low TyG index group(43.1％vs.24.0％,P=0.042).After adjusting for confounding factors,the risk of cognitive function decline in high TyG index group was 2.971 times that of low TyG index group(P＜0.05).Conclusion The TyG index of elderly hospitalized patients is correlated with 2-year cognitive function changes.The TyG index may serve as a potential biomarker for early detection of cognitive function decline.

Objective To investigate the efficacy of lenalidomide combined with bortezomib and dexamethasone in the treatment of multiple myeloma(MM)and their effects on heat shock protein 90(HSP90)mRNA,miR-28-5p,anti-tartrate acid phosphatase 5b(TRACP-5b)and high mobility group protein B1(HMGB1).Methods Eighty patients with newly diagnosed MM were selected and divided into the two-combination group(40 patients treated with bortezomib and dexamethasone)and the three-combination group(40 patients treated with bortezomib and dexamethasone combined with lenalidomide)according to the treatment modalities.Real-time fluorescence quantitative polymerase chain reaction was used to detect HSP90 mRNA and miR-28-5p levels.Enzyme-linked immunosorbent assay was used to detect TRACP-5b and HMGB1 levels.The clinical efficacy of the 2 groups was compared.Levels of HSP90 mRNA,miR-28-5p,TRACP-5b,HMGB1,the immune cell function,renal function indexes and the incidence of adverse reactions were compared before and after treatment.Results The total effective rate of the three-combination group was higher than that of the two-combination groups(92.50%vs.75.00%,P＜0.05).Compared with the pretreatment,the levels of HSP90 mRNA,TRACP-5b,blood creatinine(SCr),and urea nitrogen(BUN)decreased in the 2 groups after treatment,and which was lower in the three-combination group than that in the two-combination groups.The levels of miR-28-5p,HMGB1,CD4+,CD3+and CD4+/CD8+were elevated in the 2 groups,and the levels were higher in the three-combination group than those in the two-combination group(P＜0.05).There was no significant difference in the incidence of adverse reactions between the two groups.Conclusion Lenalidomide combined with bortezomib and dexamethasone is clinically effective,safe and reliable in the treatment of MM.

Objective To investigate the effect of pecto-intercostal fascial block(PIFB)-PECS Ⅱ block-general anesthesia on hemodynamics and stress response in patients undergoing modified radical mastectomy for breast cancer.Methods A total of 95 patients with breast cancer who underwent modified radical mastectomy in the hospital from November 2021 to November 2023 were enrolled in this study.They were divided into the control group(n=46)and the observation group(n=49)according to the anesthesia mode.The control group received PECS Ⅱ block-general anesthesia and the observation group received PIFB-PECS Ⅱ block-general anesthesia.The dosage of remifentanil,the dosage of cisatracurium,recovery time,tracheal extubation time,postoperative analgesia pump compression times,VAS scores,hemodynamics(HR,MAP),oxidative stress response(SOD,CAT,MDA),and hyperthermia were compared between the two groups Susceptibility to MMSE score and adverse reactions.Results The dosage of remifentanil,dosage of cisatracurium,effective pressing times of analgesia pump within 48 h,wake-up time,tracheal extubation time and time to postoperative first pressing in the observation group were lower and shorter than those in the control group(P＜0.05).The observation group had lower VAS scores than the control group after surgery(P＜0.05).The HR of after anesthesia induction(T1),at tracheal intubation(T2),at the beginning of surgery(T3)and at the end of surgery(T4)in the observation group was(78.45±6.12)times/min,(100.28±11.54)times/min,(103.90±14.82)times/min and(93.66±9.17)times/min,respectively,which were lower than the control group[(84.66±7.04)times/min,(112.33±13.28)times/min,(122.44±17.06)times/min and(106.26±11.03)times/min,respectively].MAP of T1,T2,T3 and T4 in the observation group were(67.73±4.09)mmHg,(75.22±9.51)mmHg,(90.76±10.77)mmHg and(82.50±8.63)mmHg,respectively,the control groups were(70.10±5.66)mmHg,(82.62±10.17)mmHg,(96.43±12.59)mmHg and(90.82±11.04)mmHg,respectively.There was a statistically significant difference between the two groups(P＜0.05).The levels of SOD,CAT and MDA in both groups at 24 hours and 72 hours after the operation were all higher than those before the operation(P＜0.05).The SOD levels in the observation group were(83.22±15.44)nU/ml and(77.41±10.39)nU/ml at 24 h and 72 h after operation.It was lower than that of the control group,which was(90.40±18.23)nU/ml and(82.80±13.18)nU/ml.The CAT scores of observation group were(16.20±5.03)kU/L and(14.12±3.27)kU/L at 24 h and 72 h after operation,which were lower than those of control group[(20.75±6.57)kU/L and(17.06±4.35)kU/L].The MDA levels in the observation group were(5.12±1.33)mmol/L and(3.23±0.76)mmol/L at 24 h and 72 h after surgery,which were lower than those in the control group[(6.03±2.24)mmol/L and(4.88±1.05)mmol/L],and the differences were statistically significant(all P＜0.05).The MMSE scores of the observation group were(28.01±1.35)and(28.46±1.39),which were higher than those of the control group[(26.44±1.08)and(27.36±1.23)](P＜0.05).Conclusion Applying PIFB-PECS Ⅱ block-general anesthesia in modified radical mastectomy for breast cancer can maintain hemodynamic stability,reduce oxidative stress and alleviate the damage to cognitive function,with high safety.