OBJECTIVES: To explore the mechanism of Lacticaseibacillus paracasei E6 for improving vinorelbine-induced immunosuppression in zebrafish. METHODS: The intestinal colonization of L. paracasei E6 labeled by fluorescein isothiocyanate (FITC) in zebrafish was observed under fluorescence microscope. In a zebrafish model of vinorelbine-induced immunosuppression, the immunomodulatory activity of L. paracasei E6 was assessed by analyzing macrophage and neutrophil counts in the caudal hematopoietic tissue (CHT), the number of T-lymphocyte, and the expressions of interleukin-12 (IL-12) and interferon-γ (IFN-γ). The contents of short-chain fatty acids (SCFAs) in L. paracasei E6 fermentation supernatant and the metabolites of L. paracasei E6 in zebrafish were detected by LC-MS/MS-based targeted metabolomics. The immunomodulatory effects of the SCFAs including sodium acetate, sodium propionate and sodium butyrate were evaluated in the zebrafish model of immunosuppression. RESULTS: After inoculation, green fluorescence of FITC-labeled L. paracasei E6 was clearly observed in the intestinal ball, midgut and posterior gut regions of zebrafish. In the immunocompromised zebrafish model, L. paracasei E6 significantly alleviated the reduction of macrophage and neutrophil counts in the CHT, increased the fluorescence intensity of T-lymphocytes, and promoted the expressions of IL-12 and IFN-γ. Compared with MRS medium, L. paracasei E6 fermentation supernatant showed significantly higher levels of acetic acid, propionic acid and butyric acid, which were also detected in immunocompromised zebrafish following treatment with L. paracasei E6. Treatment of the zebrafish model with sodium acetate and sodium propionate significantly increased macrophage and neutrophil counts in the CHT and effectively inhibited vinorelbine-induced reduction of thymus T cells. CONCLUSIONS L. paracasei E6 can improve vinorelbine-induced immunosuppression in zebrafish through its SCFA metabolites acetic acid and propionic acid.
Animals ; Zebrafish/immunology* ; Acetic Acid/metabolism* ; Propionates/metabolism* ; Fatty Acids, Volatile/metabolism*

OBJECTIVES: To investigate the efficacy of Lactobacillus plantarum ZG03 (L. plantarum ZG03) for ameliorating oxidative stress in zebrafish. METHODS: We evaluated the growth pattern of L. plantarum ZG03, observed its morphology using field emission scanning electron microscopy, and assessed its safety and potential efficacy with whole-genome sequencing for genetic analysis. FITC-labeled ZG03 was used to observe its intestinal colonization in zebrafish. In a zebrafish model of 2% glucose-induced oxidative stress, the effect of ZG03 was evaluated by assessing the changes in neutrophils in the caudal hematopoietic tissue (CHT), superoxide dismutase (SOD) activity, reactive oxygen species (ROS) levels, and malondialdehyde (MDA) content. Liquid chromatography-mass spectrometry-based targeted metabolomics was used for analyzing short-chain fatty acids (SCFAs) in the zebrafish, and the antioxidant effects of the key metabolites (acetate, propionate, and caproate) were tested. RESULTS: On MRS agar, L. plantarum ZG03 formed circular, smooth, moist, and milky-white colonies with a rod-shaped cell morphology. Genomic analysis revealed abundant sugar metabolism gene clusters. After inoculation of FITC-labeled L. plantarum ZG03 in zebrafish, green fluorescence was clearly observed in the intestinal bulb, mid-intestine, and hind intestine. In zebrafish with glucose-induced oxidative stress, L. plantarum ZG03 significantly reduced ROS levels and the number of neutrophils in the CHT with increased SOD activity. L.plantarum ZG03 significantly increased the content of SCFAs including acetic acid, propionic acid, and caproic acid in zebrafish metabolites. In addition, sodium acetate, sodium propionate, and sodium caproate in the SCFAs significantly increased SOD activity in the zebrafish models. CONCLUSIONS L. plantarum ZG03 ameliorates oxidative stress in a glucose-induced zebrafish model through its metabolites, particularly the SCFAs including acetic acid, propionic acid and caproic acid.
Animals ; Zebrafish/metabolism* ; Oxidative Stress ; Lactobacillus plantarum/metabolism* ; Fatty Acids, Volatile/metabolism* ; Probiotics ; Reactive Oxygen Species/metabolism* ; Superoxide Dismutase/metabolism*

This article reports a patient with hepatic coma who underwent artificial liver support therapy and liver transplantation successfully， and the patient recovered well in the later stage after active treatment. This article also discusses the timing of liver transplantation.

Objective:pH low insertion peptide (pHLIP)-variant 7 (var7)-fluorescein isothiocyanate (FITC) was used to explore an accurate imaging tool that targeted burn wounds to better perform burn debridement.Methods:Twelve rat models of burn wound were established and pHLIP-var7-FITC with different concentrations (0.5, 1.5 and 2.0 mg/ml) were injected from the rat tail vein for in vivo fluorescence imaging. By determining the concentration of fluorescent conjugates to the burn wound, the scope of wound injury necrosis was judged by combining pathological sections, and its residue and toxicity in important organs such as heart, liver, kidneys, and brain were detected. The Kruskal-Wallis rank sum test, Bonferroni correction method and one-way analysis of variance were used for data analysis. Results:Within 24 h, the fluorescence photons per unit area of the burn wound in the group of 0.5 mg/ml, 1.5 mg/ml and 2.0 mg/ml were 1.49(1.31, 1.65), 2.46(1.88, 2.68), 2.77 (1.94, 3.10)×10 7 p·s -1·cm -2·Sr -1, with significant differences in the overall distribution of fluorescence photons ( H=73.55, P<0.001). The fluorescence intensity was stronger in the group with higher concentration, but with no significant difference in the number of fluorescence photons between the group of 1.5 mg/ml and 2.0 mg/ml ( P=0.263, Bonferroni correction method). At 14 time points (0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 5.0, 6.0, 7.0, 8.0, 12, 24 h), there was no significant difference in the overall mean of fluorescence photons ( F=1.04, P=0.419), and the tissue with burn necrosis seen in tissue sections was highly consistent with the fluorescence imaging region. There was no obvious fluorescence residue in the heart, liver, kidney and brain sections. Conclusion:In superficial second-degree burn tissue, pHLIP-var7-FITC can accurately target and gather on the burn wound within 24 h, showing a clear boundary between burn tissue and normal tissue, which can assist clinical surgical debridement to determine the extent of injury.

Objective:To assess the value of serum tumor specific protein 70 (SP70) for prognostic stratification in acute myeloid leukemia (AML).Methods:A cohort study design was adopted. 129 newly diagnosed AML patients from September 2022 to January 2024 at the Hematology Department of the First Affiliated Hospital of Nanjing Medical University were included, as well as a control group consisted of 120 healthy individuals and 7 cases with benign hematologic diseases during the same period (total 127 cases). Clinical data were collected from Electronic Medical Records. According to the 2023 edition of the Chinese Leukemia Diagnosis and Treatment Guidelines, AML patients with good or moderate prognosis were categorized as low-to-intermediate risk, while those with poor prognosis were high-risk group. Univariate and multivariate logistic regression analyses were used to identify variables significantly associated with AML prognostic risk. ROC analysis was used to evaluate diagnostic performance. A nomogram for predicting patient prognostic risk was constructed by R 4.0.2 software, and the internal validation was performed using bootstrapping.Results:Among 129 AML patients, there were 71 males (55.0%) and 58 females (45.0%), with 42 (32.6%) classified as high-risk and 87 (67.4%) as low-intermediate risk. The high-risk group had a significantly higher median age [62 (48, 67) years] compared to the low-intermediate risk group [50 (35, 63) years, Z=-2.381, P=0.017], and a significantly higher proportion of males (30 patients, 71.4%) compared to the low-intermediate risk group (41 patients, 47.1%, χ 2=6.760, P=0.009). Multivariate logistic regression analysis indicated that serum SP70 ( OR=2.54, 95% CI: 1.68-3.84, P<0.001), hemoglobin (HB) ( OR=0.96, 95% CI: 0.93-0.99, P<0.05), and bone marrow blast (BM blast) ( OR=1.07, 95% CI: 1.02-1.13, P<0.05) were independent risk factors for high-risk prognosis in AML patients. ROC analysis showed that the area under the curve (AUC) for SP70 predicting high-risk patients was 0.908 (cut-off value of 5.74 ng/ml, 95% CI: 0.845-0.952, sensitivity 90.5%, specificity 82.8%). The combined model of serum SP70, HB, and BM blasts had an AUC of 0.931 (95% CI: 0.890-0.973); C-index=0.925 (95% CI: 0.876-0.963),with no statistically significant difference compared to serum SP70 alone ( Z=1.693, P>0.05). Conclusion:Serum SP70 may be a promising non-invasive molecular biomarker for prognostic stratification in AML.

Objective:To assess the value of serum tumor specific protein 70 (SP70) for prognostic stratification in acute myeloid leukemia (AML).Methods:A cohort study design was adopted. 129 newly diagnosed AML patients from September 2022 to January 2024 at the Hematology Department of the First Affiliated Hospital of Nanjing Medical University were included, as well as a control group consisted of 120 healthy individuals and 7 cases with benign hematologic diseases during the same period (total 127 cases). Clinical data were collected from Electronic Medical Records. According to the 2023 edition of the Chinese Leukemia Diagnosis and Treatment Guidelines, AML patients with good or moderate prognosis were categorized as low-to-intermediate risk, while those with poor prognosis were high-risk group. Univariate and multivariate logistic regression analyses were used to identify variables significantly associated with AML prognostic risk. ROC analysis was used to evaluate diagnostic performance. A nomogram for predicting patient prognostic risk was constructed by R 4.0.2 software, and the internal validation was performed using bootstrapping.Results:Among 129 AML patients, there were 71 males (55.0%) and 58 females (45.0%), with 42 (32.6%) classified as high-risk and 87 (67.4%) as low-intermediate risk. The high-risk group had a significantly higher median age [62 (48, 67) years] compared to the low-intermediate risk group [50 (35, 63) years, Z=-2.381, P=0.017], and a significantly higher proportion of males (30 patients, 71.4%) compared to the low-intermediate risk group (41 patients, 47.1%, χ 2=6.760, P=0.009). Multivariate logistic regression analysis indicated that serum SP70 ( OR=2.54, 95% CI: 1.68-3.84, P<0.001), hemoglobin (HB) ( OR=0.96, 95% CI: 0.93-0.99, P<0.05), and bone marrow blast (BM blast) ( OR=1.07, 95% CI: 1.02-1.13, P<0.05) were independent risk factors for high-risk prognosis in AML patients. ROC analysis showed that the area under the curve (AUC) for SP70 predicting high-risk patients was 0.908 (cut-off value of 5.74 ng/ml, 95% CI: 0.845-0.952, sensitivity 90.5%, specificity 82.8%). The combined model of serum SP70, HB, and BM blasts had an AUC of 0.931 (95% CI: 0.890-0.973); C-index=0.925 (95% CI: 0.876-0.963),with no statistically significant difference compared to serum SP70 alone ( Z=1.693, P>0.05). Conclusion:Serum SP70 may be a promising non-invasive molecular biomarker for prognostic stratification in AML.

Extracellular vesicles(EV)are a group of membrane-bound structures that originate from the endosomal system or are shed from the plasma membrane of cells.EVs can carry a heterogeneous set of molecules,including proteins,lipids,nucleic acids,and membrane receptors from their cell of origin.EV can cross the blood-brain barrier,allowing brain-derived EV(BDEV)to be specifically extracted from peripheral blood using surface markers on neuronal cells.Due to the presence of signals from the central nervous system,such as proteins,lipids,and nucleic acids,BDEV has emerged as a promising tool for exploring the central nervous system.This article provided an overview of the feasibility of BDEV as biomarkers for neurological and psychiatric disorders,as well as their potential for monitoring therapeutic efficacy in the treatment process.

Objective:To determine the risk factors for permanent nerve damage (PND) after aortic arch surgery in patients with acute type A aortic dissection (AAAD).Methods:This was a retrospective case-control study. The medical records from patients of both sexes with AAAD, aged > 18 yr, of American Society of Anesthesiologists Physical Status classification IV, who underwent aortic arch surgery in the Second Hospital of Hebei Medical University from December 2018 to December 2023, were collected. The patients were divided into non-PND group and PND group according to whether PND occurred after operation. The preoperative data of patients were collected, including age, gender, body mass index; comorbidities (hypertension, coronary heart disease, diabetes mellitus), history of smoking, history of stroke, and history of cardiovascular surgeries; syncope at onset, preoperative low SpO 2, preoperative low systolic blood pressure, and preoperative low diastolic blood pressure. The intraoperative data included surgical procedure (total aortic arch replacement or half aortic arch replacement), selective antegrade cerebral perfusion during operation, cardiopulmonary bypass (CPB) time, aortic cross-clamp time, post-parallel time, moderate hypothermia circulatory arrest time, nasopharyngeal temperature and rectal temperature during circulatory arrest, and BIS value during circulatory arrest; blood pressure during cardiopulmonary bypass and after restoration of heart beat; the incidence of dysfunction after recovery of heart beat and difficulty in hemostasis after termination of CPB. The aforementioned indicators were analyzed for difference, and the indicators with P<0.05 were included in the multivariate logistic regression analysis. Results:A total of 292 patients were ultimately included, among which 73 developed postoperative PND, resulting in an incidence of 25.0%. The results of multivariate logistic regression analysis showed that age ≥62 yr ( OR=3.783, 95% confidence interval [ CI] 1.513-10.346, P=0.006), preoperative hypertension ( OR=2.230, 95% CI 1.118-4.715, P=0.028), syncope at onset ( OR=3.001, 95% CI 1.343-6.710, P=0.007), BIS value > 14 during circulatory arrest ( OR=2.439, 95% CI 1.249-4.755, P=0.009) and difficult hemostasis after termination of CPB ( OR=3.465, 95% CI 1.758-6.882, P<0.001) were risk factors for PND after surgery. Conclusions:Age ≥ 62 yr, history of hypertension, syncope at onset, BIS value greater than 14 during circulatory arrest and difficulty in hemostasis after termination of CPB are risk factors for PND after aortic arch surgery in patients with AAAD.

Objective: To construct a mouse derived pcDNA3. 1 ⁃3 × Flag⁃c⁃NUP85 expression plasmid and observe its effect on expression of inflammation factors in LPS⁃induced RAW264. 7 cells , as well as on the proliferation and apoptosis of RAW264. 7 cells. Methods: The NUP85 gene was amplified by PCR to construct pcDNA3. 1 ⁃3 × Flag-c⁃NUP85 eukaryotic expression plasmid. The pcDNA3. 1 ⁃3 × Flag⁃c vector was divided with enzymes. The purified PCR product was ligated with the vector, and the ligated product was transformed into bacterial competent cells. After identification by enzyme digestion , sequencing and analysis were performed. Then , it was transfected into RAW264. 7 cells , and the blank plasmid without NUP85 gene was set as the control group. The effect on cell proliferation and apoptosis were detected by CCK⁃8 assay and flow cytometry , and the expression of inflammatory cytokines such as tumor necrosis factor⁃α (TNF⁃α ) and interleukin⁃6 (IL⁃6) in LPS⁃induced RAW264. 7 cells was detected by Western blot and ELISA. Results: Enzyme digestion identification and Western blot results showed that pcDNA3. 1 ⁃3 × Flag⁃c⁃NUP85 eukaryotic expression plasmid was successfully constructed and expressed. The results of CCK⁃8 assay showed that the cell survival rate of NUP85 overexpression group was significantly lower than that of control group after 24 h[(0. 55 ± 0. 03) vs (0. 67 ± 0. 05) , F = 30. 98 , P < 0. 05 ] . The results of flow cytometry showed that the cell apoptosis rate of NUP85 overexpression group was higher than that of control group[( 15. 78 ±1. 05)% vs ( 13. 40 ± 0. 47)% , F = 75. 38 , P < 0. 05] . The results of Western blot and ELISA showed that after transfection of pcDNA3. 1 ⁃3 × Flag⁃c⁃NUP85 , the expression of TNF⁃α and IL⁃6 in RAW264. 7 cells were higher than those in the control group ,with statistical significance (P < 0. 05) . Conclusion NUP85 can inhibit the proliferation and promote apoptosis in LPS⁃stimulated RAW264. 7 cells , and NUP85 can promote the expression of inflammatory cytokines IL⁃6 and TNF⁃α in LPS⁃stimulated RAW264. 7 cells.

ObjectiveTo investigate the value of the serum levels of Clusterin and sphingosine 1-phosphate （S1P） in assessing the prognosis of sepsis patients with acute liver injury. MethodsA total of 127 sepsis patients with acute liver injury who were admitted to Lianyungang Hospital， Xuzhou Medical University， from March 2019 to May 2022 were enrolled， and according to their prognosis after 28 days of treatment， they were divided into death group with 35 patients and survival group with 92 patients. The independent-samples t test was used for comparison of continuous data between two groups， and the chi-square test was used for comparison of categorical data between groups. A pearson correlation analysis was used to investigate the correlation. The prognostic value of serum Clusterin and S1P was analyzed by receiver operating characteristic curve. ResultsThere were significant differences between the two groups in the degree of liver injury， Acute Physiology and Chronic Health Evaluation Ⅱ （APACHEⅡ） score， Sequential Organ Failure Assessment （SOFA） score， the presence or absence of acute kidney injury， prothrombin time （PT）， international normalized ratio （INR）， Child-Pugh class， and C-reactive protein （all P<0.05）. The death group had significantly lower serum levels of Clusterin and S1P than the survival group （t=11.094 and 10.390， both P<0.05）. The patients with severe liver injury had significantly lower serum levels of Clusterin and S1P than those with mild or moderate liver injury （t=9.825 and 11.418， both P<0.05）. The multivariate regression analysis showed that the degree of liver injury （odds ratio ［OR］=1.260， 95% confidence interval ［CI］： 1.081 — 1.468， P<0.05）， APACHEII score （OR=1.031， 95%CI： 1.019 — 1.044， P<0.05）， SOFA score （OR=1.066， 95%CI： 1.039 — 1.094， P<0.05）， Clusterin （OR=0.899， 95%CI： 0.859 — 0.940， P<0.05）， and S1P （OR=0.824， 95%CI： 0.749 — 0.908， P<0.05） were independent risk factors for the prognosis of patients with sepsis. The ROC curve analysis showed that serum Clusterin and S1P used alone or in combination had an area under the ROC curve of 0.864， 0.861， and 0.949， respectively. Serum Clusterin and S1P were significantly negatively correlated with alanine aminotransferase， total bilirubin， PT， and INR in sepsis patients with acute liver injury （all P<0.05）. ConclusionThe sepsis patients with acute liver injury who died had significant reductions in serum Clusterin and S1P compared with those who survived， and the levels of Clusterin and S1P are closely associated with the degree of liver injury. The combination of Clusterin and S1P has a good value in predicting the prognosis of sepsis patients with acute liver injury and is expected to become a potential marker for predicting the prognosis of sepsis patients with acute liver injury.