1.Epidemiological investigation of multidrug-resistant bacterial infections in patients with diabetic foot ulcers
Meirong YANG ; Yan ZHANG ; Yonghan NIU
Journal of Public Health and Preventive Medicine 2025;36(1):156-159
Objective To analyse the distribution characteristics and drug resistance of multidrug-resistant bacteria infections in patients with diabetic foot ulcers, and to investigate the relevant risk factors affecting the infection of multidrug-resistant bacteria in patients with diabetic foot ulcers. Methods We selected 352 patients with diabetic foot ulcers admitted to our hospital from January 2021 to December 2023, and retrospectively collated and analysed the clinical data of all patients, collected the ulcer wound specimens of all patients, analysed the infection of multidrug-resistant bacteria and bacterial resistance, compared the differences in the relevant data of patients with different infections, and analysed the risk factors affecting the patients with diabetic foot ulcers by using multivariate logistic regression model. Multiple logistic regression model was used to analyse the risk factors affecting patients with diabetic foot ulcers infected with multi-drug resistant bacteria. Results A total of 352 patients with diabetic foot ulcers, 20.45% developed multidrug-resistant bacterial infections, and a total of 91 strains of bacteria were detected, with the predominant strains being Staphylococcus aureus (41.76%), Pseudomonas aeruginosa (24.18%) and Enterobacteriaceae (21.98%).Compared with uninfected patients, patients with MDRI had a longer duration of diabetes, longer duration of ulcers, a higher proportion of Wagner grade 3-5, ischaemic ulcers, multiple hospitalisations, combined osteomyelitis, larger ulcers, and a longer duration of antibiotic use (P < 0.05).Multifactorial analysis showed that long duration of diabetes mellitus, high Wagner grading, long duration of ulcer, large ulcer size, multiple hospitalisations, prolonged antibiotic use, and comorbid osteomyelitis were all risk factors for MDRI (P < 0.05). Conclusion Patients with diabetic foot ulcers are at risk of multi-resistant bacterial infections, and longer duration of diabetes mellitus, Wagner grade 3-5, longer duration of ulcers prior to hospitalisation, larger ulcer size, hospitalisation for the same wound >2 times/year, prolonged use of antibiotics prior to hospitalisation, and comorbidity with osteomyelitis can increase the risk of multi-resistant bacterial infections in patients with diabetic foot ulcers, therefore, controlling and reducing multi-resistant bacterial infections is the key to improving the prognosis of patients with diabetic foot ulcers.
2.Impact of Maxing Kugan Decoction on Inflammatory Response and Apoptosis in Oleic Acid-induced Acute Lung Injury in Rats via p38 MAPK/NF-κB Signaling Pathway
Taiqiang JIAO ; Yi NAN ; Ling YUAN ; Jiaqing LI ; Yang NIU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(7):108-116
ObjectiveTo investigate the effects of Maxing Kugan decoction (MKD) on inflammatory response and apoptosis in rats with oleic acid (OA)-induced acute lung injury (ALI) and explore its mechanism of action. MethodsSixty Sprague-Dawley (SD) rats were randomly assigned into six groups: a control group, a model group, a dexamethasone-treated group (2 mg·kg-1), and three MKD-treated groups at low, medium, and high doses (3.1, 6.2,12.4 g·kg-1). Each group was administered either an equivalent volume of normal saline or the corresponding concentration of MKD by gavage for seven consecutive days. The model group and each administration group were used to establish the ALI model by tail vein injection of OA (0.2 mL·kg-1). Twelve hours after modeling, blood gas analyses were conducted, and the wet-to-dry (W/D) weight ratio of lung tissue was measured for each group. Additionally, enzyme-linked immunosorbent assay (ELISA) was employed to quantify the levels of tumor necrosis factor-alpha (TNF-α), interleukin-1β (IL-1β), and interleukin-6 (IL-6) in the bronchoalveolar lavage fluid (BALF) of the rats. Cell damage and apoptosis in lung tissue were examined via hematoxylin-eosin (HE) staining and TdT-mediated dUTP-biotin nick end labeling (TUNEL) assays, and the results were subsequently scored. The expression levels of the p38 mitogen-activated protein kinase (p38 MAPK)/nuclear factor kappa-B (NF-κB) signaling pathway and apoptosis-related proteins and mRNAs were assessed using Western blot and real-time fluorescence quantitative polymerase chain reaction (Real-time PCR). ResultsCompared with the control group, the model group exhibited a significant decrease in partial pressure of oxygen (PaO2), blood oxygen saturation (SaO2), and oxygenation index (PaO2/FiO2), along with a marked increase in partial pressure of carbon dioxide (PaCO2) and lung W/D ratio (P<0.01). Additionally, levels of TNF-α, IL-6, and IL-1β in BALF were significantly elevated (P<0.01). Histopathological analysis of lung tissue showed significant inflammatory infiltration, tissue edema, alveolar septal thickening, and apoptosis of lung tissue. Pronounced increases were observed in the mRNA expression levels of p38 MAPK, NF-κB p65, inhibitor of NF-κB (IκBα), B-cell lymphoma-2 associated x protein (Bax), and Caspases-3, as well as the protein expression levels of p-p38 MAPK, p-NF-κB p65, p-IκBα, Bax, Caspases-3, and cleaved Caspases-3, while the mRNA and protein expression of Bcl-2 was downregulated (P<0.01). Compared with the model group, MKD significantly elevated PaO2, SaO2, and PaO2/FiO2 while reducing PaCO2 and W/D ratio in rats (P<0.01). It also greatly reduced TNF-α, IL-6, and IL-1β levels in BALF (P<0.01) and alleviated inflammatory infiltration, tissue edema, alveolar septal thickening, and apoptosis of lung tissue. Additionally, it downregulated the mRNA expression of p38 MAPK, NF-κB p65, IκBα, Bax, Caspases-3, as well as protein expression of p-p38 MAPK, p-NF-κB p65, p-IκBα, Bax, Caspases-3, and cleaved Caspases-3 in lung tissue (P<0.05, P<0.01), while significantly upregulating mRNA and protein expression of Bcl-2 (P<0.01). ConclusionMKD exerts a protective effect on OA-induced ALI rats, potentially through the regulation of the p38 MAPK/NF-κB signaling pathway to inhibit inflammation and apoptosis.
3.Impact of Maxing Kugan Decoction on Inflammatory Response and Apoptosis in Oleic Acid-induced Acute Lung Injury in Rats via p38 MAPK/NF-κB Signaling Pathway
Taiqiang JIAO ; Yi NAN ; Ling YUAN ; Jiaqing LI ; Yang NIU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(7):108-116
ObjectiveTo investigate the effects of Maxing Kugan decoction (MKD) on inflammatory response and apoptosis in rats with oleic acid (OA)-induced acute lung injury (ALI) and explore its mechanism of action. MethodsSixty Sprague-Dawley (SD) rats were randomly assigned into six groups: a control group, a model group, a dexamethasone-treated group (2 mg·kg-1), and three MKD-treated groups at low, medium, and high doses (3.1, 6.2,12.4 g·kg-1). Each group was administered either an equivalent volume of normal saline or the corresponding concentration of MKD by gavage for seven consecutive days. The model group and each administration group were used to establish the ALI model by tail vein injection of OA (0.2 mL·kg-1). Twelve hours after modeling, blood gas analyses were conducted, and the wet-to-dry (W/D) weight ratio of lung tissue was measured for each group. Additionally, enzyme-linked immunosorbent assay (ELISA) was employed to quantify the levels of tumor necrosis factor-alpha (TNF-α), interleukin-1β (IL-1β), and interleukin-6 (IL-6) in the bronchoalveolar lavage fluid (BALF) of the rats. Cell damage and apoptosis in lung tissue were examined via hematoxylin-eosin (HE) staining and TdT-mediated dUTP-biotin nick end labeling (TUNEL) assays, and the results were subsequently scored. The expression levels of the p38 mitogen-activated protein kinase (p38 MAPK)/nuclear factor kappa-B (NF-κB) signaling pathway and apoptosis-related proteins and mRNAs were assessed using Western blot and real-time fluorescence quantitative polymerase chain reaction (Real-time PCR). ResultsCompared with the control group, the model group exhibited a significant decrease in partial pressure of oxygen (PaO2), blood oxygen saturation (SaO2), and oxygenation index (PaO2/FiO2), along with a marked increase in partial pressure of carbon dioxide (PaCO2) and lung W/D ratio (P<0.01). Additionally, levels of TNF-α, IL-6, and IL-1β in BALF were significantly elevated (P<0.01). Histopathological analysis of lung tissue showed significant inflammatory infiltration, tissue edema, alveolar septal thickening, and apoptosis of lung tissue. Pronounced increases were observed in the mRNA expression levels of p38 MAPK, NF-κB p65, inhibitor of NF-κB (IκBα), B-cell lymphoma-2 associated x protein (Bax), and Caspases-3, as well as the protein expression levels of p-p38 MAPK, p-NF-κB p65, p-IκBα, Bax, Caspases-3, and cleaved Caspases-3, while the mRNA and protein expression of Bcl-2 was downregulated (P<0.01). Compared with the model group, MKD significantly elevated PaO2, SaO2, and PaO2/FiO2 while reducing PaCO2 and W/D ratio in rats (P<0.01). It also greatly reduced TNF-α, IL-6, and IL-1β levels in BALF (P<0.01) and alleviated inflammatory infiltration, tissue edema, alveolar septal thickening, and apoptosis of lung tissue. Additionally, it downregulated the mRNA expression of p38 MAPK, NF-κB p65, IκBα, Bax, Caspases-3, as well as protein expression of p-p38 MAPK, p-NF-κB p65, p-IκBα, Bax, Caspases-3, and cleaved Caspases-3 in lung tissue (P<0.05, P<0.01), while significantly upregulating mRNA and protein expression of Bcl-2 (P<0.01). ConclusionMKD exerts a protective effect on OA-induced ALI rats, potentially through the regulation of the p38 MAPK/NF-κB signaling pathway to inhibit inflammation and apoptosis.
4.Advantages and prospects of wireless endoscope in urology
Cheng YANG ; Di NIU ; Chaozhao LIANG
Journal of Modern Urology 2025;30(1):4-7
There are various complicated wired connections in traditional endoscopic systems, which have disadvantages such as prolonging the preoperative setup time, restricting the movement of laparoscope, hindering the intraoperative manipulation, potentially contaminating the operation area and causing safety hazards.Our team has developed a wireless intelligent ultra-high-definition endoscopic system for the first time, which has been widely applied in many urological surgeries, such as tumors, stones, transurethral prostate enucleation, laparoscopic pyeloureteroplasty, laparoscopic renal cyst top decompression and so on.This essay reviews the applications and advantages of this system in urology, and forecasts its prospects.
5.Palpitations, Shortness of Breath, Weakness in Limbs, Edema, and Dyspnea: A Rare Inflammatory Myopathy with Positive Aniti-mitochondrial Antibodies and Cardiac Involvement
Chunsu LIANG ; Xuchang ZHANG ; Ning ZHANG ; Lin KANG ; Xiaohong LIU ; Jiaqi YU ; Yingxian LIU ; Lin QIAO ; Yanli YANG ; Xiaoyi ZHAO ; Ruijie ZHAO ; Na NIU ; Xuelian YAN
Medical Journal of Peking Union Medical College Hospital 2025;16(1):248-255
This article presents a case study of a patient who visited the Geriatric Department of Peking Union Medical College Hospital due to "palpitations, shortness of breath for more than 2 years, limb weakness for 6 months, edema, and nocturnal dyspnea for 2 months". The patient exhibited decreased muscle strength in the limbs and involvement of swallowing and respiratory muscles, alongside complications of heart failure and various arrhythmias which were predominantly atrial. Laboratory tests revealed the presence of multiple autoantibodies and notably anti-mitochondrial antibodies. Following a comprehensive multidisciplinary evaluation, the patient was diagnosed with anti-mitochondrial antibody-associated inflammatory myopathy. Treatment involved a combination of glucocorticoids and immunosuppressants, along with resistance exercises for muscle strength and rehabilitation training for lung function, resulting in significant improvement of clinical symptoms. The case underscores the importance of collaborative multidisciplinary approaches in diagnosing and treating rare diseases in elderly patients, where careful consideration of clinical manifestations and subtle abnormal clinical data can lead to effective interventions.
6.Investigation of High-risk HPV Infection in Kashgar and Evaluation of Health Awareness Education Intervention
Kelimu ASIMUGULI ; Anwaier MAYIRE ; Xiuwei YANG ; Gang NIU
Journal of Sun Yat-sen University(Medical Sciences) 2025;46(1):98-106
ObjectiveTo investigate the prevalence of high-risk HPV infection among women in Kashgar area, analyze related risk factors, conduct follow-up and health education interventions for positive cases in the past three years, and assess intervention outcomes to improve HPV screening awareness and reduce cervical cancer incidence. MethodsThis study randomly selected 571 women from Kashgar who underwent HPV screening as part of a health check-up in the First People’s Hospital of Kashgar between January 2021 and June 2023. High-risk HPV-DNA was detected using the PCR-RDB method. Based on the test results, participants were divided into HPV-negative and HPV-positive groups, and the infection rates and associated risk factors were analyzed. Additionally, follow-up was conducted for women who tested positive for high-risk HPV during the screening to assess the effectiveness of health management interventions. ResultsFrom 2021 to 2023, the high-risk HPV positive rate among women in Kashgar showed a year-on-year decline, recorded at 19.15%, 16.43%, and 11.30%, respectively (P<0.001), with a total of 3,921 cases (16.13%) testing positive for high-risk HPV during this period. Uyghur women had a significantly higher infection rate compared with those of Han nationality and other ethnic minorities (P<0.05). Risk factors included age, age at first sexual activity, number of sexual partners, contraceptive methods, and a history of vaginal inflammation (P<0.05). Health management interventions significantly improved participants’ awareness scores regarding cervical cancer prevention and the proportion of women voluntarily receiving HPV vaccination (P<0.05). ConclusionsHigh-risk HPV infection among Uyghur women in Kashgar area is relatively high, with single infection of HPV-16 and HPV-52 and mixed infections of HPV-16 +HPV-52 and HPV-16 +HPV-58 being predominant. Risk factors include age at first sexual activity, number of sexual partners, contraceptive methods, and history of vaginal inflammation. Through triple-education interventions, the incidence of cervical cancer in Kashgar has been effectively reduced, and standards for primary-level diagnosis, treatment, and health supervision have been improved.
7.Molecular characterization of Cronobacter sakazakii in patients with diarrhea in a hospital in Changping District, Beijing, 2019
Yang ZHANG ; Dongxun LI ; Weijun WANG ; Huancai NIU ; Tian GU ; Gaolin SHU
Shanghai Journal of Preventive Medicine 2025;37(1):29-33
ObjectiveTo understand the current status of Cronobacter sakazakii (Cronobacter spp.) infection and its molecular epidemiological characteristics among patients with diarrhea, so as to provide evidence for the prevention and control of diarrhea disease caused by infection with Cronobacter spp. in Changping District, Beijing. Methods760 stool samples were collected from the diarrhea patients in a sentinel hospital in 2019, for the detection of Cronobacter spp., Salmonella, diarrheogenic Escherichia coli (DEC), and Vibrio Parahaemolyticus. Meanwhile, drug sensitivity experiment and pulsed-field gel electrophoresis (PFGE) typing analysis were conducted on the Cronobacter spp. strains isolated. ResultsA total of 20 Cronobacter spp. strains (2.63%) were isolated, with a lower detection rate than that of Salmonella and Vibrio Parahaemolyticus (χ2=9.052, P=0.011). However, there were no statistically significant differences between the detection rates in Cronobacter spp. and DEC (χ2=1.076, P=0.300). Seasonal characterization analysis showed that Cronobacter spp. could be detected in spring (1.00%), summer (4.17%), autumn (3.00%) and winter (1.67%), and the differences were statistically significant (χ2=662.700, P<0.001). The PFGE analysis showed that 20 PFGE banding patterns were found in 20 Cronobacter spp. strains, with a similarity coefficient ranging from 56.30% to 90.09% and a diverse PFGE banding pattern. The drug sensitivity experiment results showed that 18 (90.00%) strains were resistant to cefazolin, and2 (10.00%) strains were intermediate. While, as for cefoxitin, 2 (10.00%) strains were resistant to it, and 5 (25.00%) strains were intermediate. All the 20 strains were 100.00% sensitive to the other 11 antibiotics. ConclusionIn the study, Cronobacter spp. is detected in all seasons through the year, with a high resistance rate to cefazolin, no multi-drug resistant bacteria appeared, and diverse PFGE banding patterns.
8.A Comparative Study on the Clinical Effects of Short-term and Long-term Spinal Cord Stimulation in Patients with Prolonged Disorders of Consciousness
Fengqiao SUN ; Hongchuan NIU ; Yi YANG ; Jianghong HE ; Yuanli ZHAO
Medical Journal of Peking Union Medical College Hospital 2025;16(2):307-313
To compare the therapeutic effects of short-term spinal cord stimulation (stSCS) and long-term spinal cord stimulation (ltSCS) on patients with prolonged disorders of consciousness(pDoC). Clinical data of patients with pDoC who underwent SCS surgery at Peking University International Hospital from January 2020 to December 2021 were retrospectively included. Patients were divided into the stSCS group and the ltSCS group based on the surgical approach. The Coma recovery scale-revised (CRS-R) was used to assess the level of consciousness before and 3 months after SCS treatment. Based on CRS-R scores, the clinical diagnosis of the patient's level of consciousenss was categorized into four levels: vegetative state, minimally conscious state minus (MCS-), MCS plus (MCS+), and emergence from the minimally conscious state(EMCS). Improvement in the clinical diagnostic level of consciousness was defined as effective treatment, and the therapeutic outcomes of the stSCS and ltSCS groups were compared. 44.8% of patients with pDoC showed improvement in their clinical diagnostic level of consciousness after SCS treatment. Compared to preoperative scores, the CRS-R scores at 3 months postoperatively were significantly increased in both the stSCS and ltSCS groups (both Both stSCS and ltSCS can significantly improve the level of consciousness in patients with pDoC. Compared to ltSCS, stSCS may achieve comparable short-term therapeutic outcomes.
9.Clinical application progress of monofocal intraocular lens in cataract treatment
International Eye Science 2025;25(5):749-753
Cataract extraction combined with intraocular lens implantation is a standard method for treating cataracts, significantly improving patients' vision and quality of life. In this process, the personalized selection of intraocular lenses plays a crucial role in the surgical outcome. Traditional monofocal intraocular lenses provide good distance vision but often have issues with intermediate vision, requiring patients to rely on glasses for correction in daily life. In contrast, multifocal intraocular lenses can meet vision needs at different distances, but are often accompanied by adverse reactions such as halos and glare, affecting the patient's visual experience. In recent years, new types of monofocal intraocular lenses have made significant progress in improving intermediate vision, with relatively fewer side effects. This article aims to review the different types, optical characteristics, and clinical efficacy of monofocal intraocular lenses, providing a reference for ophthalmologists in selecting suitable lenses for patients.
10.Evaluation of the efficacy and safety of cryopreserved deglycerolized red blood cells infusion based on propensity score matching method
Wei YANG ; Fanfan FU ; Lei NIU ; Tingchen XU ; Xin ZHANG ; Hongmei SHI ; Lihui FU ; Chunya MA ; Yang YU
Chinese Journal of Blood Transfusion 2025;38(4):531-536
[Objective] To compare the efficacy and safety of deglycerolized red blood cells (DRBC) and suspended red blood cells (SRBC) based on the propensity score matching (PSM) method, so as to provide evidence for the rational use of DRBC resources in clinical practice. [Methods] A total of 89 patients who received DRBC transfusion and 2 916 patients who received SRBC transfusion in our hospital from January 2023 to September 2024 were included. A 1∶1 nearest neighbor PSM was used to balance covariates such as gender, age, and body mass index (BMI). The changes of hemoglobin (Hb), red blood cell (RBC) count, hematocrit (HCT), and inflammatory markers such as white blood cell (WBC) count, neutrophil (NE) count, C-reactive protein (CRP), and Interleukin-6(IL-6) in the last 72 hours after transfusion were analyzed by SPSS 26.0 and R software to evaluate clinical efficacy and transfusion safety. [Results] The baseline of the two groups was balanced after PSM (P>0.05). There was no significant difference in the total effective rate between the DRBC group (80.9%) and the SRBC group (86.5%) (P>0.05). In the SRBC group, WBC (×10
/L) increased from 9.634±6.742 to 10.147±6.835, CRP (mg/dL) increased from 5.468±4.647 to 6.174±6.114, and IL-6(pg/mL) decreased from 213.733±587.191 to 157.255±552.626. In the DRBC group, WBC (×10
/L) decreased from 11.123±7.880 to 11.011±8.549, CRP (mg/dL) decreased from 5.729±4.761 to 5.326±4.466, and IL-6(pg/mL) decreased from 238.806±639.060 to 152.255±266.558. Compared with the before treatment, the differences between the SRBC group and DRBC group were not statistically significant (P>0.05). Among all patients included in the statistics, the overall incidence of transfusion adverse reactions was 0.205% (6/2 916) in the SRBC group, and no adverse reactions occurred in the DRBC group. The incidence in the SRBC group was higher than that in the DRBC group. [Conclusion] Based on PSM analysis, there was no significant difference in the efficacy and safety of DRBC transfusion compared with SRBC transfusion, which can provide evidence-based support for routine application.


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