Objective:To investigate the prevalence and associated factors of anxiety and depression in outpatients with chronic obstructive pulmonary disease (COPD) visiting the Yuetan Community Health Service Center in Beijing.Methods:This cross-sectional study enrolled COPD patients who visited the center between January 1, 2022, and December 31, 2023, using convenience sampling. After pulmonary function tests, participants completed questionnaires covering demographic characteristics, GOLD classification, number of hospitalizations for acute exacerbations in the past year, modified Medical Research Council (mMRC) dyspnea scale score, COPD Assessment Test (CAT) score, Generalized Anxiety Disorder-7 (GAD-7), and Patient Health Questionnaire-9 (PHQ-9). The status and influencing factors of anxiety and depression were analyzed with univariate and multivariate Logistic regression.Results:A total of 243 COPD patients were included, with 74.1% (180/243) being male and a mean age of 67±9 years. The prevalence rates of anxiety and depression were 17.3% (42/243) and 21.0% (51/243), respectively. Multivariate logistic regression analysis identified the following independent factors associated with anxiety (all P<0.05): CAT score 31-40 ( OR=26.621, 95% CI: 4.451-159.209), mMRC score ≥2 ( OR=5.387, 95% CI: 1.589-18.209), GOLD grade ≥3 ( OR=3.227, 95% CI: 1.205-8.645), presence of ≥1 comorbidity ( OR=8.571, 95% CI: 1.132-64.920), being divorced/separated/widowed ( OR=3.125, 95% CI:1.369-7.136), and ≥1 hospitalization for acute exacerbation in the past year ( OR=3.523, 95% CI:1.422-8.726). Independent factors associated with depression (all P<0.05) were: CAT score ≥21 ( OR=3.326, 95% CI:1.038-10.653), mMRC score≥1 ( OR=7.468, 95% CI:1.706-32.697), GOLD grade ≥3 ( OR=3.160, 95% CI:1.225-8.148), presence of ≥1 comorbidity ( OR=5.624, 95% CI:1.295-24.422), smoking history ≥40 pack-years ( OR=2.689, 95% CI: 1.092-6.623), and ≥1 hospitalization for acute exacerbation in the past year ( OR=2.663, 95% CI:1.093-6.486). Conclusions:The prevalence of anxiety and depression among COPD outpatients in this Beijing community health center is considerable. CAT score, mMRC grade, GOLD grade, number of comorbidities, marital status, and history of hospitalization for acute exacerbation are risk factors of anxiety, while CAT score, mMRC grade, GOLD grade, number of comorbidities, smoking pack-years, and hospitalization history are risk factors for depression.

Objective:To investigate the role of the CD38/p53/ME1 axis in regulating T cell mitochondrial function and senescence during HIV infection.Methods:The expression of CD38 on T cells was examined in HIV-infected individuals receiving antiretroviral therapy(ART), untreated HIV-infected individuals, and HIV-negative healthy controls. Flow cytometry was used to compare senescence markers and mitochondrial function between CD38 + and CD38 - T cells. Malic enzyme 1(ME1) mRNA levels were measured by qRT-PCR in T cells treated with the CD38 inhibitor 78c. Mitochondrial function and senescence were assessed in T cells treated with an ME1 inhibitor. The regulatory mechanism of CD38-mediated ME1 downregulation was further explored. Results:Compared to healthy controls, T cells from HIV-infected individuals exhibited significantly elevated CD38 expression, which persisted despite ART. CD38 + T cells showed increased senescence (CD28 -CD57 + subset) and mitochondrial dysfunction[depolarization and reactive oxygen species(ROS) accumulation]. CD38 inhibition upregulated ME1 mRNA level ( P<0.05). ME1 suppression led to mitochondrial impairment (reduced membrane potential and elevated ROS) and senescence in T cells. Mechanistically, CD38 depletion increased NAD + levels and SIRT1 activity, while SIRT1/p53 inhibition rescued ME1 expression, suggesting CD38 regulates ME1 via the NAD + /SIRT1/p53 axis. Conclusions:The CD38/p53/ME1 axis drives T cell senescence in HIV infection by disrupting mitochondrial function. Targeting this pathway may ameliorate CD38-associated T cell dysfunction and immune aging.

OBJECTIVE To investigate the epidemiological characteristics of respiratory human adenovirus(H AdV)infections in hospitalized children in Ningbo,and to provide data for formulating infection prevention and control strategies for HAdV.METHODS A total of 65 022 children hospitalized with respiratory infections at the Women and Children's Hospital of Ningbo University from Jul.2019 to Dec.2024 were selected as the study sub-jects.Multiple reverse transcription-polymerase chain reaction(RT-PCR)and capillary electrophoresis were used to detect 11 non-bacterial pathogens.Basic and clinical information of the children was collected for analysis.RESULTS A total of 65 022 specimens were tested,with 4 292 cases tested positive for HAdV positivity,yielding a positive rate of 6.60％.The lowest positive rate was observed in 2023(3.22％),while the highest was in 2024(13.97％).Compared to the years 2019-2023,the overall HAdV positive rate was high in 2024,peaking at 26.80％in Jun.,indicating an outbreak.The total HAdV positive rate was higher in boys(6.82％)than in girls(6.32％)(P=0.006).The highest HAdV positive rate was observed in the 2 to＜6 age group(9.00％),while the lowest was in the 0 to＜1 age group(2.33％).Among the HAdV-positive specimens,2 658 cases(61.93％)were single infections,and 1 634 cases(38.07％)were co-infections.The non-bacterial respiratory pathogens with the highest co-infection rates were human rhinovirus(34.09％),Mycoplasma pneumoniae(20.44％)and human parainfluenza virus(5.75％).CONCLUSIONS A n outbreak of HAdV infections is observed among hospitalized children in Ningbo in 2024.Higher positive rates are found in boys aged 2 to＜6 years,with a certain proportion of co-infections.

OBJECTIVE To investigate the epidemiological characteristics of respiratory human adenovirus(H AdV)infections in hospitalized children in Ningbo,and to provide data for formulating infection prevention and control strategies for HAdV.METHODS A total of 65 022 children hospitalized with respiratory infections at the Women and Children's Hospital of Ningbo University from Jul.2019 to Dec.2024 were selected as the study sub-jects.Multiple reverse transcription-polymerase chain reaction(RT-PCR)and capillary electrophoresis were used to detect 11 non-bacterial pathogens.Basic and clinical information of the children was collected for analysis.RESULTS A total of 65 022 specimens were tested,with 4 292 cases tested positive for HAdV positivity,yielding a positive rate of 6.60％.The lowest positive rate was observed in 2023(3.22％),while the highest was in 2024(13.97％).Compared to the years 2019-2023,the overall HAdV positive rate was high in 2024,peaking at 26.80％in Jun.,indicating an outbreak.The total HAdV positive rate was higher in boys(6.82％)than in girls(6.32％)(P=0.006).The highest HAdV positive rate was observed in the 2 to＜6 age group(9.00％),while the lowest was in the 0 to＜1 age group(2.33％).Among the HAdV-positive specimens,2 658 cases(61.93％)were single infections,and 1 634 cases(38.07％)were co-infections.The non-bacterial respiratory pathogens with the highest co-infection rates were human rhinovirus(34.09％),Mycoplasma pneumoniae(20.44％)and human parainfluenza virus(5.75％).CONCLUSIONS A n outbreak of HAdV infections is observed among hospitalized children in Ningbo in 2024.Higher positive rates are found in boys aged 2 to＜6 years,with a certain proportion of co-infections.

Objective:To investigate the prevalence and associated factors of anxiety and depression in outpatients with chronic obstructive pulmonary disease (COPD) visiting the Yuetan Community Health Service Center in Beijing.Methods:This cross-sectional study enrolled COPD patients who visited the center between January 1, 2022, and December 31, 2023, using convenience sampling. After pulmonary function tests, participants completed questionnaires covering demographic characteristics, GOLD classification, number of hospitalizations for acute exacerbations in the past year, modified Medical Research Council (mMRC) dyspnea scale score, COPD Assessment Test (CAT) score, Generalized Anxiety Disorder-7 (GAD-7), and Patient Health Questionnaire-9 (PHQ-9). The status and influencing factors of anxiety and depression were analyzed with univariate and multivariate Logistic regression.Results:A total of 243 COPD patients were included, with 74.1% (180/243) being male and a mean age of 67±9 years. The prevalence rates of anxiety and depression were 17.3% (42/243) and 21.0% (51/243), respectively. Multivariate logistic regression analysis identified the following independent factors associated with anxiety (all P<0.05): CAT score 31-40 ( OR=26.621, 95% CI: 4.451-159.209), mMRC score ≥2 ( OR=5.387, 95% CI: 1.589-18.209), GOLD grade ≥3 ( OR=3.227, 95% CI: 1.205-8.645), presence of ≥1 comorbidity ( OR=8.571, 95% CI: 1.132-64.920), being divorced/separated/widowed ( OR=3.125, 95% CI:1.369-7.136), and ≥1 hospitalization for acute exacerbation in the past year ( OR=3.523, 95% CI:1.422-8.726). Independent factors associated with depression (all P<0.05) were: CAT score ≥21 ( OR=3.326, 95% CI:1.038-10.653), mMRC score≥1 ( OR=7.468, 95% CI:1.706-32.697), GOLD grade ≥3 ( OR=3.160, 95% CI:1.225-8.148), presence of ≥1 comorbidity ( OR=5.624, 95% CI:1.295-24.422), smoking history ≥40 pack-years ( OR=2.689, 95% CI: 1.092-6.623), and ≥1 hospitalization for acute exacerbation in the past year ( OR=2.663, 95% CI:1.093-6.486). Conclusions:The prevalence of anxiety and depression among COPD outpatients in this Beijing community health center is considerable. CAT score, mMRC grade, GOLD grade, number of comorbidities, marital status, and history of hospitalization for acute exacerbation are risk factors of anxiety, while CAT score, mMRC grade, GOLD grade, number of comorbidities, smoking pack-years, and hospitalization history are risk factors for depression.

Objective:To investigate the role of the CD38/p53/ME1 axis in regulating T cell mitochondrial function and senescence during HIV infection.Methods:The expression of CD38 on T cells was examined in HIV-infected individuals receiving antiretroviral therapy(ART), untreated HIV-infected individuals, and HIV-negative healthy controls. Flow cytometry was used to compare senescence markers and mitochondrial function between CD38 + and CD38 - T cells. Malic enzyme 1(ME1) mRNA levels were measured by qRT-PCR in T cells treated with the CD38 inhibitor 78c. Mitochondrial function and senescence were assessed in T cells treated with an ME1 inhibitor. The regulatory mechanism of CD38-mediated ME1 downregulation was further explored. Results:Compared to healthy controls, T cells from HIV-infected individuals exhibited significantly elevated CD38 expression, which persisted despite ART. CD38 + T cells showed increased senescence (CD28 -CD57 + subset) and mitochondrial dysfunction[depolarization and reactive oxygen species(ROS) accumulation]. CD38 inhibition upregulated ME1 mRNA level ( P<0.05). ME1 suppression led to mitochondrial impairment (reduced membrane potential and elevated ROS) and senescence in T cells. Mechanistically, CD38 depletion increased NAD + levels and SIRT1 activity, while SIRT1/p53 inhibition rescued ME1 expression, suggesting CD38 regulates ME1 via the NAD + /SIRT1/p53 axis. Conclusions:The CD38/p53/ME1 axis drives T cell senescence in HIV infection by disrupting mitochondrial function. Targeting this pathway may ameliorate CD38-associated T cell dysfunction and immune aging.

Objective:To investigate the role and mechanism of human umbilical cord mesenchymal stem cell exosomes (hUCMSC-ex) in wounds with escharectomy and skin grafting in scalded rats.Methods:The study was an experimental study. Twelve male Sprague-Dawley (SD) rats aged 6-8 weeks were divided into combined treatment group, fixed+allogeneic skin group, autologous skin+allogeneic skin group, and allogeneic skin group by random number table method (the same grouping method hereinafter), with 3 rats in each group. The four groups of rats were inflicted with scalded wounds on the back and performed with escharectomy, and then the wounds of rats in combined treatment group were fixed with a metal ring (the same fixing method hereinafter) and transplanted with autologous skin grafts and allogeneic skin grafts, and the other three groups of rats were fixed and/or transplanted with skin grafts corresponding to the group name. At 14, 21, and 28 d after surgery, the wound healing area in the four groups of rats was measured. Another 15 male SD rats aged 6-8 weeks were divided into normal group with no treatment, high exosome group, low exosome group, supernatant group, and phosphate buffer solution (PBS) group, with 3 rats in each group. The last 4 groups of rats were treated as that in the above-mentioned combined treatment group, and then were injected around the wounds with 200 μL of PBS containing 100 μg of hUCMSC-ex, 200 μL of PBS containing 50 μg of hUCMSC-ex, 200 μL of supernatant with no hUCMSC-ex, and 200 μL of PBS at 0 (immediately), 7, 14, and 21 d after surgery, respectively. At 14, 21, and 28 d after surgery, the wound healing area in the four groups of rats was measured. The wound neo-epithelial tissue of rats in high exosome group and PBS group at 28 d after surgery and the normal skin tissue of rats in normal group at the same time point were taken, and the differentially expressed proteins were screened by label-free quantitative proteomics method; the two up-regulated and differentially expressed proteins, the immunoglobulin G1 heavy chain constant region (IGHG1) and cystatin A (CSTA) with the largest and second largest fold changes in comparison between high exosome group and PBS group were selected, and their protein expressions were detected by Western blotting. The number of samples in all experiments was 3.Results:At 14, 21, and 28 d after surgery, the wound healing area in combined treatment group, autologous skin+allogeneic skin group, and allogeneic skin group of rats was significantly larger than that in fixed+allogeneic skin group ( P<0.05), the wound healing area in autologous skin+allogeneic skin group of rats at 21 d after surgery and that in allogeneic skin group of rats at 14 and 21 d after surgery was significantly larger than that in combined treatment group ( P<0.05), and the wound healing area in allogeneic skin group of rats at 14 d after surgery was significantly larger than that in autologous skin+allogeneic skin group ( P<0.05). The wound healing area of rats in high exosome group and low exosome group at 14, 21, and 28 d after surgery and in supernatant group at 14 and 28 d after surgery was significantly larger than that in PBS group ( P<0.05); the wound healing area in high exosome group of rats at 14 and 21 d after surgery was significantly larger than that in supernatant group ( P<0.05), and the wound healing area at 14 d after surgery was significantly larger than that in low exosome group ( P<0.05); the wound healing area in low exosome group of rats at 14 d after surgery was significantly larger than that in supernatant group ( P<0.05). Compared with that in PBS group, 332 proteins were differentially expressed in the neo-epithelial tissue of the wounds in high exosome group of rats at 28 d after surgery ( P<0.05), among which the protein expressions of IGHG1 and CSTA were significantly up-regulated (with fold change of 12.60 and 2.27, respectively, P<0.05). Compared with those of normal skin tissue in normal group, 1 400 and 1 057 proteins were differentially expressed in the neo-epithelial tissue of the wounds in high exosome group and PBS group of rats at 28 d after surgery, respectively. The protein expressions of IGHG1 and CSTA in the wound neo-epithelial tissue in high exosome group of rats at 28 d after surgery were significantly larger than those in normal skin tissue of rats in normal group ( P<0.05) and those in PBS group ( P<0.05). Conclusions:hUCMSC-ex may accelerate the repair process of wounds with escharectomy and skin grafting and improve the quality of wound healing in scalded rats by regulating the protein expressions of IGHG1 and CSTA.

In order to search for coumarin-based anti-platelet aggregation compounds with high efficacy and good druggability,twenty-five 3-acetyl-7-hydroxy-coumarin oxime derivatives(6a-6y)were synthesized via Vilsmeier-Haack reaction,Knoevenagel reaction,Williamson reaction,electrophilic substitution reaction and oximation reaction from resorcinol.Their structures were confirmed by HRMS and 1H NMR spectra.The anti-platelet aggregation activity of the target compounds was evaluated using Born's turbidimetric method.The results revealed that most of them could significantly inhibit platelet aggregation induced by adenosine diphosphate(ADP),collagen,arachidonic acid(AA)and thrombin.Among them,the target compounds 6a and 6b not only had strong inhibitory activity on platelet aggregation induced by the four inducers,but also exhibited good water solubility(3.46 mg/mL and 3.85 mg/mL,respectively)and lipid-water partition coefficient(2.56 and 2.85,respectively)and were expected to become a preclinical candidate compound with multi-target action against platelet aggregation.

Objective:To investigate the clinical efficacy of a 1 064 nm picosecond laser combined with intense pulsed light in the treatment of melasma.Methods:From May to August 2022, ninety-two female patients with melasma were admitted to the Medical Cosmetology Center, Xi′an International Medical Center Hospital, aged 25-50 years, with an average age of (35.0±3.5) years. The were divided by random number table method. Forty-six cases were divided into laser combined group, which were treated with precise intense pulsed light combined with a 1 064 nm picosecond laser. Forty-six cases in the laser group were treated with a 1 064 nm picosecond laser. The area and severity score of melasma (MASI), VISIA score and clinical efficacy were evaluated.Results:The MASI scores of laser combined group were 12.58 (11.04, 13.99) before treatment, and the MASI scores of laser group were 13.16 (11.47, 14.14) before treatment. The MASI scores of laser combined group were 5.75 (3.79, 7.19), and the MASI scores of laser group were 7.15 (5.42, 5.85) after treatment. The MASI scores of the two groups were decreased compared with those before treatment, and the MASI score of the laser combined group was lower than that of the laser group. The difference was statistically significant ( Z=-4.05, P<0.01). The median VISIA scores of the laser combined group were (173.72±43.77), and the median VISIA scores of the laser group were (175.65±34.9) before treatment. The median VISIA scores of the laser combined group were (135.46±41.63), and the median VISIA scores ofthe laser group were (145.26±33.33) after treatment. The VISIA scores of the two groups were decreased compared with those before treatment. The scores of the laser combined group were lower than those of the laser group. The difference was statistically significant ( t=-2.52, P<0.05). The effective rate of the laser combined group (80.43%, 37/46) was higher than that of the laser group (69.56%, 22/46, P<0.05). Conclusions:The curative effect of 1 064 nm picosecond laser combined with precise intense pulsed light in the treatment of melasma is better than that of a 1 064 nm picosecond laser alone.

Objective:Evaluation of the efficacy and safety of ultra-picosecond 1 064 nm laser treatment for enlarged facial pores.Methods:From November 2022 to April 2023, 31 female patients with enlarged facial pores, aged between 28 and 52 (35.2±5.5) years old, were treated at the Medical Aesthetics Center of Xi′an International Medical Center Hospital. They received ultra-picosecond 1 064 nm laser fractional handpiece treatment once every 4 weeks for a total of 3 times. One month after the last treatment, facial pore changes were evaluated using facial pore scores and VISIA pore feature count absolute values, and adverse reactions were assessed.Results:All 31 patients completed the treatment. The facial pore scores before and after treatment were 4 (4, 5) and 2 (2, 3), respectively, indicating a statistically significant ( Z=-4.99, P<0.001) decrease in facial pore scores compared to before treatment. The absolute values of VISIA facial pore counts before and after treatment were 859 (829, 1147) and 652 (632, 731), respectively. The absolute value of VISIA pore count after treatment was lower than that before treatment, and the difference was statistically significant ( Z=-4.86, P<0.05 ). Conclusions:Ultra-picosecond laser can effectively improve enlarged facial pores without significant adverse reactions.