Matrix metalloproteinase-28(MMP-28)is widely expressed in vertebrates and plays diverse biological roles,participating in the regulation of various pathophysiological processes in the body.Increased expression of MMP-28 has been observed in chronic obstructive pulmonary disease,pulmonary fibrosis,and other lung diseases.Studies have demonstrated that MMP-28 promotes chronic inflammation and tissue remodeling by regulating macrophage recruitment and M2 polarization,and is involved in the pathogenesis of lung diseases by promoting cell proliferation and epithelial-mesenchymal transition.This article provides a review of the relationship between the basic characteristics of MMP-28 and pulmonary diseases.

Humans ; Parkinson Disease/diagnosis* ; Machine Learning

Objective To evaluate the effect of targeted monitoring and multi-modular improvement strategy on the prevention and control of catheter-associated urinary tract infection(CAUTI).Methods Patients with indwe-lling urinary catheter in a tertiary first-class hospital from January 2018 to December 2022 were selected as the re-search subjects.Targeted monitoring results and distribution of pathogenic bacteria in 5 consecutive years were ana-lyzed,and a multi-modular improvement strategy based on the targeted monitoring results was implemented.The occurrence of CAUTI before and after implementation,status and effectiveness of training in prevention and control measures were compared respectively.Results Before and after the implementation of the multi-modular improve-ment strategy,health care workers'compliance rate of hand hygiene,awareness rate of prevention and control measures,and implementation rate of prevention and control measures all increased significantly(all P＜0.001).Targeted monitoring results showed that daily test rates of urine culture and routine urine from patients with in-dwelling catheters have been on the rise in 5 consecutive years(P＜0.05).A total of 397 cases of CAUTI occurred in the past 5 years.Incidences of CAUTI in general intensive care unit(ICU)and surgical ICU showed decreasing trends in 5 consecutive years(all P＜0.05).Incidence of CAUTI in general wards showed no statistically significant difference in 5 years(P=0.088).A total of 431 strains of pathogenic bacteria were detected,mainly Gram-negative bacteria.Daily incidence of multidrug-resistant organism infection in patients with indwelling catheters was 0.12‰.After the implementation of the multi-modular improvement strategy,incidence of CAUTI in all departments re-duced significantly(P＜0.05).Conclusion Targeted monitoring can help identify departments with high-risk of CAUTI,multi-modular improvement strategy can raise the quality of prevention and control of CAUTI in all occa-sions,reduce the incidence of CAUTI,and is worthy of clinical promotion and application.

Over the past half-century,the climate change,along with population growth,worsens the intensity and frequency of sand storms in China,and the environmental and health problems have become increasingly prominent.Sand and dust particles not only possess their own toxicity but also carry numerous pathogenic microorganisms and heavy metals.This can lead to high concentrations of local dust pollution,causing significant harm to the air environment and the health of residents in downwind areas during long-distance transportation sand and dust.Based on a comprehensive literature review on the health effects of dust storms,this paper aims to summarize the impact of various pathogenic factors presenting in dust storms on human health and the underlying mechanisms to provide a scientific foundation for the development of more effective control measures.In the future,amidst the backdrop of climate change,it is crucial to prioritize the research and analysis of dust source regions and dust control strategies in northern China.Additionally,there is a need to enhance the technology for simulating sand and dust environments in experiments,and to adopt a multidisciplinary approach to investigate the medical and toxicological aspects of sand and dust weather.

Objective: To investigate the possible pathophysiological mechanism of laryngopharyngeal reflux (LPR) in the development of lingual tonsil hypertrophy (LTH). Methods: The lingual tonsil tissues were collected from 73 patients [48 males and 25 females, aged from 24 to 76 (52.86±12.04) years] who underwent surgery for laryngopharyngeal diseases at the Department of Otolaryngology and Head and Neck Surgery, Southern Hospital of Southern Medical University from October 2019 to December 2020, and the lingual tonsil grade (LTG), reflux symptom index (RSI) and reflux finding score (RFS) were assessed. The expression of pepsin in LTH was detected by immunohistochemistry. The coexpression of pepsin and macrophages were detected by immunohistofluorescence. In vitro, cytological experiments and pathway assays were performed on macrophages stimulated by pepsin. Pathway alterations of macrophages in pepsin-positive high-grade LTH were detected by double-fluorescence immunohistochemistry. Data were analyzed by SPSS 20.0 software. Results: There were 44 clinically significant LPRD patients with LTG 3 and 4, and the pepsin positive rate was 88.6% (39/44). While, the pepsin positive rate of LTG 1 and 2 was 48.3% (14/29). LTG was significantly positively correlated with RFS/RSI positive rate(χ²=23.01/19.62, P<0.001/0.001; r=0.54/0.51, P<0.001/0.001) and pepsin tissue staining intensity (H=21.58, P<0.001; r=0.53, P<0.001), respectively. Pepsin and macrophages were clearly colocalized in high grade LTH. In vitro, pepsin promoted macrophage proliferation (P<0.05) and production of IL-6/IL-8 (P<0.05). Pepsin significantly up-regulated the p38/JNK MAPK pathway in macrophages (P<0.05). Pepsin up-regulated the expression of IL-6 and IL-8 of macrophages by activating the p38 MAPK pathway (P<0.05), and up-regulated the expression of IL-8 by activating the JNK pathway (P<0.05). The p38/JNK MAPK pathways were highly expressed in macrophages of pepsin-positive LTH (P<0.05). Conclusions: LPR is an important pathogenic factor in LTH. Macrophages may mediate pepsin-induced inflammation and the pathogenesis of LTH.
Female ; Male ; Humans ; Palatine Tonsil ; Pepsin A ; Interleukin-6 ; Interleukin-8 ; Hypertrophy ; Macrophages ; Laryngopharyngeal Reflux

OBJECTIVE: To observe the safety of donor NK cell infusions in the settings of hematopoietic stem cell transplantation and after consolidation chemotherapy in elderly patients with acute myeloid leukemia (AML). METHODS: Forty patients with AML were included, in which 21 patients aged over 60 years were at the stage of complete remission (CR) and 19 patients that received allogeneic hematopoietic stem cell transplantation (allo-HSCT). Mononucleated cells were isolated from peripheral blood from the donors (for allo-HSCT) or healthy immediate family members (elderly AML). The cells were seeded into the flasks pre-coated with NK cell specific activators, and expanded in media containing recombinant human IL-15 and IL-2 for 14 days. The cells were transfused intravenously after the identification of quality control. Trypan blue exclusion test was used for the determination of cell viability and counting. Flow cytometry analysis was performed to assess the surface antigenic profile. Seventy-eight infusions of the cell products were received by the elderly patients with AML after consolidation chemotherapy, 11 infusions were received by the patients during allo-HSCT and 32 infusions 3 moths after transplantation. The safety of cell therapy, body temperature, blood pressure and other indexes were observe during and 48 hours after cell transfusion. Meanwhile, the occurrence and severity of acute graft-versus-host disease (GVHD) were documented. RESULTS: Flow cytometry analysis showed that the proportion of NK cells (CD3^-CD56⁺) in the mononucleated cells before culture was (14.10±4.22)% (n=121), and the proportion increased dramatically up to (87.29±8.75)% (n=121) after culture for 14 days, the number of NK cells increased to 753.47±140.13 times (n=121). The doses of the infused NK cells was (7.58±2.50)×10⁷/kg per infusion. Moderate fever occurred in three cases after multiple infusions, and the temperature restored to normal on the same day after treatment. Fever was observed in one patient after every infusion of four times in total. The temperature reached to 38.5-39.0 ℃ and returned to normal within 1-2 hours after adequate antipyretic treatment, and then there was no discomfort. No GVHD was observed in the elderly AML patients, while 6 cases that received allo-HSCT developed moderate acute GVHD, among them grade I in 5 cases and grade II in 1 case. No other severe toxicities were observed. CONCLUSION NK cell products with a high-purity could be obtained by ex vivo expansion with this protocol. The transfusion of these expanded cells is generally safe in the elderly patients with AML that have received chemotherapy or patients that received hematopoietic stem cell transplantation.
Aged ; Graft vs Host Disease/prevention & control* ; Hematopoietic Stem Cell Transplantation ; Humans ; Killer Cells, Natural ; Leukemia, Myeloid, Acute/therapy* ; Middle Aged ; Recurrence

Hospitals, General ; Humans ; Medically Unexplained Symptoms ; Psychometrics ; Reproducibility of Results ; Self Report ; Surveys and Questionnaires

OBJECTIVE: To investigate the influence of conventional CAG regimen and decitabine + decreased dose CAG (D+dCAG) regimen on the clinical efficacy and safety of patients with MDS-RAEB/AML-MRC. METHODS: The clinical data of 67 patients with MDS-RAEB/AML-MRC hospitalized in our hospital from March 2012 to July 2017 were analyzed retrospectively. According to chemotherapecctic regimens, 76 patients were divided into 2 groups: 37 patients treated with conventional CAG regimen were enrolled in control group, 30 patients treated with decitabine + decreased dose CAG regimen were enrolled in D+dCAG group. The complete remission (CR) rate, overall remission rate (ORR), OS and PFS time and incidence of adverse reactions in 2 groups were compared. RESULTS: The CR in D+dCAG group was significantly higher than that in control group (P＜0.05). ORR was not significanly different between 2 groups (P＞0.05). There was no significant difference in the cumulative OS rate between 2 groups (P＞0.05). There was no significant difference in the cumulative OS rate and PFS rate in nonimplantation between 2 groups (P＞0.05). The incidence of adverse reactions of hematological system, pulmonary infection, skin and soft tissue infection, agranulocytosic fever and mycotic infection was not significanly different between 2 groups (P＞0.05). The duration of granulocyte deficiency and platelet count less than 20×10/L were not significanly different between 2 groups (P＞0.05). CONCLUSION Compared with conventional CAG regimen, decitabine + decreased dose CAG regimen in the treatment of patients with MDS-RAEB/AML-MRC can efficiently improve the remission effects and showed the well overall safety, but can not increase the survival rate.
Anemia, Refractory, with Excess of Blasts ; Antineoplastic Combined Chemotherapy Protocols ; Cytarabine ; Decitabine ; Granulocyte Colony-Stimulating Factor ; Humans ; Leukemia, Myeloid, Acute ; Myelodysplastic Syndromes ; Retrospective Studies ; Treatment Outcome

BACKGROUND: Knee osteoarthritis (OA) is a major cause of disability among the older adults. Few treatments are safe and effective. Moxibustion is commonly used in treating knee OA in Chinese medicine (CM). CO Laser moxibustion device is a substitute for traditional moxibustion, which mimics the effects of traditional moxibustion. More data are needed to support its application in knee OA. OBJECTIVE: ObjectiveThe trial aims to assess the effect and safety of CO laser moxibustion in patients with knee osteoarthritis compared with a sham control. METHODS: This is a protocol for a multicenter, randomized, double-blind, placebo-controlled trial. A total of 392 participants were recruited and assigned to the CO laser moxibustion group and sham laser moxibustion group with a 1:1 ratio at 6 outpatient clinics in Shanghai, China. Participants in both groups received treatment at the affected knee(s) at the acupuncture point Dubi (ST 35) and an Ashi point. There were 3 sessions per week for 4 weeks, and an additional 20-week follow-up. Primary outcomes were changes in the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) pain scores at week 4. Secondary outcomes were WOMAC function score, stiffness score and overall score, VAS pain, Short-Form heath survey (SF-36), and patients' global assessment. The serum levels of cytokines involved in progress of knee OA were explored. Safety was assessed during the whole trial. Masking effectiveness was assessed by both participants and treatment providers.This is a protocol for a multicenter, randomized, double-blind, placebo-controlled trial. A total of 392 participants were recruited and assigned to the CO laser moxibustion group and sham laser moxibustion group with a 1:1 ratio at 6 outpatient clinics in Shanghai, China. Participants in both groups received treatment at the affected knee(s) at the acupuncture point Dubi (ST 35) and an Ashi point. There were 3 sessions per week for 4 weeks, and an additional 20-week follow-up. Primary outcomes were changes in the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) pain scores at week 4. Secondary outcomes were WOMAC function score, stiffness score and overall score, VAS pain, Short-Form heath survey (SF-36), and patients' global assessment. The serum levels of cytokines involved in progress of knee OA were explored. Safety was assessed during the whole trial. Masking effectiveness was assessed by both participants and treatment providers. DISCUSSION CO laser moxibustion device, designed as a substitute for CM moxibustion, is easy to use and control with no choking smoke and smell, and is a plausible method for double-blind research. This study would provide rigorous evidence for the effect and safety of CO laser moxibustion in treating knee OA (Trial registration No.: ISRCTN15030019).

Objective To investigate the clinical features, diagnosis, treatment and prognosis of myelodysplastic syndromes (MDS) with mature plasmacytoid dendritic cells (PDC) proliferation. Methods The clinical data of one case of MDS with excess blasts (EB)﹣1 with mature PDC proliferation in Air Force Medical Center was retrospectively analyzed, and the literature was reviewed. Results The patient′s physical examination revealed anemia and thrombocytopenia. Bone marrow smears showed 0.064 of myeloblasts and 0.152 of dendritic cells. Immunophenotyping showed two groups of abnormal proliferation cells, namely, myeloblasts and mature PDC. Decitabine treatment was given, and the red blood cells and platelets were infused intermittently. The condition of patient was basically stable. Conclusions MDS with mature PDC proliferation is extremely rare. No special clinical manifestations are found, and the diagnosis is based on bone marrow cytology and immunophenotyping. There is no standard regimen for treatment of MDS with mature PDC proliferation, and the prognosis depends on the progression of MDS.