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1.
Heliyon ; 9(8): e18494, 2023 Aug.
Article in English | MEDLINE | ID: mdl-37529335

ABSTRACT

Background: This retrospective study analyzed the prognostic value of preoperative prealbumin (PAB) levels in patients with unresectable hepatocellular carcinoma (HCC) after transcatheter arterial chemoembolisation (TACE). Methods: Four hundred and two patients diagnosed with unresectable HCC were included in this retrospective study. All patients underwent their first TACE procedure. Based on PAB levels before the first TACE, 402 patients were classified as having low PAB levels and high PAB levels. Potential confounding factors between the two groups were eliminated using. Propensity Score Matching (PSM) analysis. The time to progression (TTP) and overall survival (OS) of the two groups were compared using Kaplan-Meier curves before and after PSM. Risk factors for poor prognosis were determined using univariate and multivariate Cox proportional hazards models. Results: Before PSM, the high PAB level group had a significantly longer median TTP and OS than the low PAB level group (all P values < 0.0001). After PSM, the high PAB level group still had a significantly longer median TTP and OS than the low PAB level group (all P values < 0.05). After PSM, low PAB level was found to be an independent predictor of shorter OS (HR = 0.656; 95% CI:0.448-0.961; P = 0.03). The subgroup analysis before PSM showed that low PAB levels increased the risk of poor prognosis in most subgroups. Conclusions: Low preoperative PAB levels are associated with poor prognosis in patients with unresectable HCC after TACE.

2.
Acta Pharmacol Sin ; 43(11): 2885-2894, 2022 Nov.
Article in English | MEDLINE | ID: mdl-35365781

ABSTRACT

Few therapies can reverse the proangiogenic activity of senescent mesenchymal stromal/stem cells (MSCs). In this study, we investigated the effects of rapamycin on the proangiogenic ability of senescent human umbilical cord MSCs (UCMSCs). An in vitro replicative senescent cell model was established in cultured UCMSCs. We found that late passage (P25 or later) UCMSCs (LP-UCMSCs) exhibited impaired proangiogenic abilities. Treatment of P25 UCMSCs with rapamycin (900 nM) reversed the senescent phenotype and notably enhanced the proangiogenic activity of senescent UCMSCs. In a nude mouse model of hindlimb ischemia, intramuscular injection of rapamycin-treated P25 UCMSCs into the ischemic limb significantly promoted neovascularization and ischemic limb salvage. We further analyzed the changes in the expression of angiogenesis-associated genes in rapamycin-primed MSCs and found higher expression of several genes related to angiogenesis, such as VEGFR2 and CTGF/CCN2, in primed cells than in unprimed MSCs. Taken together, our data demonstrate that rapamycin is a potential drug to restore the proangiogenic activity of senescent MSCs, which is of importance in treating ischemic diseases and tissue engineering.


Subject(s)
Mesenchymal Stem Cell Transplantation , Mesenchymal Stem Cells , Humans , Mice , Animals , Limb Salvage , Hindlimb , Neovascularization, Physiologic , Sirolimus/pharmacology , Sirolimus/therapeutic use , Ischemia/therapy , Ischemia/metabolism , Mesenchymal Stem Cells/metabolism , Neovascularization, Pathologic/metabolism , Mice, Nude , Cells, Cultured
3.
Asian J Androl ; 24(5): 473-477, 2022.
Article in English | MEDLINE | ID: mdl-34975069

ABSTRACT

Cavernous nerve injury is an important cause of erectile dysfunction (ED). Although protective nerve technology has been widely used in nerve-sparing radical prostatectomy (nsRP), the incidence of ED is still very high after surgery. The purpose of our study was to evaluate erectile function (EF) and penile length in the non-erectile state (PLNES) following scheduled phosphodiesterase 5 inhibitor (PDE5i), vacuum erectile device (VED) treatment, and combination therapy after nsRP. One hundred patients with localized prostate cancer and normal EF were randomized to scheduled PDE5i group, VED treatment group, a combined treatment group, and the control group without any intervention. The International Index of Erectile Function-5 (IIEF-5) scores and PLNES were evaluated after 6 months and 12 months of treatment. Sexual Encounter Profile (SEP-Question 2 and SEP-Question 3) were evaluated after 12 months of treatment. Ninety-one of the 100 randomized patients completed the study. We found that the 5 mg tadalafil once a day (OaD) combined with VED can help improve IIEF-5 scores in nsRP patients after both 6 months and 12 months. VED alone or combined with tadalafil OaD can help patients maintain PLNES. VED combined with tadalafil OaD can improve the rate of successful penetration (SEP-Question 2) after 12 months. There were no significant differences in the return to target EF after 12 months among the groups. No significant correlation was noted between the variables and return to target EF (IIEF ≥ 17), and between the variables and effective shortening of the patient's penis (shortening ≥ 1 cm) after 12 months of intervention.


Subject(s)
Erectile Dysfunction , Prostatic Neoplasms , Humans , Male , Penile Erection , Phosphodiesterase 5 Inhibitors , Prospective Studies , Prostatectomy , Tadalafil , Treatment Outcome , Vacuum
4.
Appl Opt ; 60(13): 3925-3935, 2021 May 01.
Article in English | MEDLINE | ID: mdl-33983331

ABSTRACT

By combining the conformal polishing method with short stroke vibration, a novel, to the best of our knowledge, conformal vibration polishing (CVP) method is proposed. The CVP method is expected to be an efficient means of optical processing by its high material removal rate and smoothing characteristics of mid-spatial frequency (MSF) errors. A quantitative time-domain smoothing model and a convergence factor (${\rm CF}_C$) are presented based on the research of smoothing characteristics. The motion mechanism, material removal ability, solution, and expansion of the smoothing model are demonstrated theoretically and experimentally. The experimental results exhibited good agreement with the theoretical predictions for the proposed method. The research provides a certain theoretical foundation for parameter selection and process optimization of the CVP method.

5.
Chin Med J (Engl) ; 134(1): 81-87, 2020 Aug 13.
Article in English | MEDLINE | ID: mdl-32804726

ABSTRACT

BACKGROUND: Previous studies have demonstrated that various circular RNAs are involved in the malignant proliferation of cancers, such as liver cancer, lung cancer, breast cancer, and others. The potential role of circular RNAs in glioblastoma, however, is still uncertain. In this study, we aimed to study the potential role of hsa_circ_01844 in glioblastoma. METHODS: Using reverse transcription-polymerase chain reaction (RT-PCR) method, hsa_circ_01844 expression was measured in five glioblastoma samples and five normal brain samples. To evaluate the potential function of hsa_circ_01844 in glioblastoma, hsa_circ_01844 was overexpressed in glioblastoma cell lines (U251 and U87 cells). Using these two cell lines, in vitro experiments including the flow cytometry assay, 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide assay, Transwell assay, and cell apoptosis assay were performed to investigate the role of hsa_circ_01844 in glioblastoma. Student t test and one-way analysis of variance were used for statistical analysis. RESULTS: The expression of circular RNA hsa_circ_01844 was lower in glioblastoma tissues when compared with the normal brain tissues by RT-PCR method (0.034 ±â€Š0.036 vs. 1.630 ±â€Š0.891, P < 0.001). Using two glioblastoma cell lines, we found that overexpression of hsa_circ_01844 in glioblastoma cells suppressed their proliferation, colony formation, migration, and increased the apoptotic rate compared with empty vector group and blank control group (all P < 0.05). CONCLUSION: Hsa_circ_01844 shows decreased expression in glioblastoma and its overexpression induces apoptosis and inhibits proliferation, migration, and invasion of glioblastoma cells.


Subject(s)
Apoptosis , Cell Proliferation , Glioblastoma , RNA, Circular , Apoptosis/genetics , Cell Line, Tumor , Cell Movement , Cell Proliferation/genetics , Glioblastoma/genetics , Humans , Up-Regulation/genetics
7.
Ying Yong Sheng Tai Xue Bao ; 31(4): 1055-1062, 2020 Apr.
Article in Chinese | MEDLINE | ID: mdl-32530178

ABSTRACT

Using the paired correlation equation g(r) in the spatial point patterns, we investigated the regeneration characteristics and spatial patterns of Castanopsis hystrix seedlings and the spatial correlation with the seed trees in the plantation by large diameter wood cultivation in south subtropical China. The results showed that natural seedling regeneration in C. hystrix plantation was good, which were widely distributed in the whole plantation. The seedling regeneration were mainly contributed by root sprouts, accounting for 73.6% of the total. The number distribution of C. hystrix seedlings in different age classes showed a pyramidal shape, with the contribution of diameter class1, 2 and 3 being 64.3%, 29.3% and 6.4% of the total, respectively. The C. hystrix seedlings mainly presented aggregated distribution in small scale (<15 m). With the increases of size classes and spatial scales, the aggregation strength gradually weakened and finally presented random distribution. The spatial correlation between seedlings and seed trees was not significant with the increases of size classes or spatial scale.


Subject(s)
Seedlings , Trees , China , Seeds , Wood
8.
Medicine (Baltimore) ; 98(46): e17681, 2019 Nov.
Article in English | MEDLINE | ID: mdl-31725610

ABSTRACT

RATIONALE: Castleman's disease (CD) is a rare lymphoproliferative disease. Compared to unicentric CD, multicentric Castleman disease (MCD) displays poorer prognosis and great variance to different therapies. Though chemotherapy, immunization therapy, and glucocorticoids have been used in the treatment of MCD, its optimal treatment is still controversial. PATIENT CONCERNS: A 47-year-old woman was admitted due to poor appetite, general fatigue, puffiness of face, systemic rash, and abdominal distension. On physical examination, the patient displayed as general lymphadenopathy, splenomegaly, hepatomegaly, and shifting dullness. DIAGNOSES: After biopsy of her swollen lymph node and laboratory tests, her initial diagnosis was hyaline vascular-CD. INTERVENTIONS: She was treated with combination of tocilizumab, lenalidomide, and glucocorticoids. OUTCOMES: This patient achieved complete remission (CR) with all her indexes returned to be normal. Her blood routines and biochemical examinations were still normal during the following period. LESSONS: We reported a case with multicentric Castleman's disease (MCD) which acquired quite good remission after combination treatment with tocilizumab, lenalidomide, and glucocorticoids. Our report provided powerful evidence for displaying the efficiency and safety of target therapy against unicentric Castleman disease.


Subject(s)
Antibodies, Monoclonal, Humanized/administration & dosage , Castleman Disease/drug therapy , Glucocorticoids/administration & dosage , Immunologic Factors/administration & dosage , Lenalidomide/administration & dosage , Drug Therapy, Combination , Female , Humans , Middle Aged , Treatment Outcome
9.
Asian J Androl ; 21(6): 605-611, 2019.
Article in English | MEDLINE | ID: mdl-31044753

ABSTRACT

Epididymitis is a commonly diagnosed disease associated with male infertility. However, little is known about the molecules that are involved in its development. This study was to identify critical genes associated with lipopolysaccharide-induced epididymitis and analyze the molecular mechanism of epididymitis through RNA sequencing. Experimental epididymitis models were generated by administering male Sprague-Dawley rats' lipopolysaccharide. A total of 1378 differentially expressed genes, including 531 upregulated and 847 downregulated genes, were identified in the epididymitis model rats compared with those in sham-operated rats by RNA sequencing. Functional enrichment analyses suggested that the upregulated genes were markedly enriched in inflammation-related biological processes, as well as in the tumor necrosis factor (TNF) signaling pathway, cytokine-cytokine receptor interactions, complement and coagulation cascades, and in the chemokine signaling pathway. Four downregulated genes (collagen type XXVIII alpha 1 chain [Col28α1], cyclin-dependent kinase-like 1 [Cdkl1], phosphoserine phosphatase [Psph], and fatty acid desaturase 2 [Fads2]) and ten upregulated genes (CCAAT/enhancer-binding protein beta [Cebpß], C-X-C motif chemokine receptor 2 [Cxcr2], interleukin 11 [Il11], C-C motif chemokine ligand 20 [Ccl20], nuclear factor-kappa-B inhibitor alpha [Nfkbiα], claudin 4 [Cldn4], matrix metallopeptidase 9 [Mmp9], heat shock 70 kDa protein 8 [Hspa8], intercellular cell adhesion molecule-1 [Icam1], and Jun) were successfully confirmed by real-time polymerase chain reaction. Western blot demonstrated that CDKL1 was decreased, while MMP9 and NFKBIA were increased in the experimental model group compared with those in the sham-operated group. Our study sheds new light on the understanding of the early response of the epididymis during bacterial epididymitis.


Subject(s)
Epididymitis/genetics , Genes/genetics , Animals , Base Sequence/genetics , Disease Models, Animal , Enzyme-Linked Immunosorbent Assay , Epididymis/metabolism , Epididymitis/chemically induced , Epididymitis/etiology , Epididymitis/metabolism , Gene Expression Profiling , Lipopolysaccharides/pharmacology , Male , Rats , Rats, Sprague-Dawley , Real-Time Polymerase Chain Reaction , Sequence Analysis, RNA
10.
Curr Med Sci ; 39(2): 211-216, 2019 Apr.
Article in English | MEDLINE | ID: mdl-31016512

ABSTRACT

Discontinuation of tyrosine kinase inhibitor (TKI) therapy after achieving a persistent deep molecular response (DMR) is an urgently needed treatment goal for chronic myeloid leukemia (CML) patients and has been included in the National Comprehensive Cancer Network (NCCN) guidelines (version 2.2017) for CML. Indeed, various studies have confirmed the feasibility of discontinuing TKI therapy. In this study, we analyzed data from 45 CML patients who had discontinued TKI therapy. Univariate analysis was performed to predict factors that were potentially related to treatment-free remission (TFR) and identify the differences between early relapse and late relapse. Out of the 45 patients, 20 exhibited molecular relapse after a median follow-up of 18 months (range, 1-54 months), and the estimated TFR at 24 months was 40%. The univariate analysis revealed that a high Sokal score and interruptions or dose reductions during TKI treatment were the only baseline factors associated with poor outcomes. Our results indicate that TKI discontinuation could be successfully put into practice in China.


Subject(s)
Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy , Protein Kinase Inhibitors/therapeutic use , Protein-Tyrosine Kinases/antagonists & inhibitors , Adolescent , Adult , Aged , Asian People , China , Female , Humans , Male , Middle Aged , Young Adult
11.
Clin Chim Acta ; 487: 330-336, 2018 Dec.
Article in English | MEDLINE | ID: mdl-30347182

ABSTRACT

BACKGROUND: Oxidative stress is related to brain injury after spontaneous intracerebral hemorrhage (ICH). Myeloperoxidase (MPO) is a potent oxidizing enzyme. We tested the hypothesis that serum MPO concentrations are increased after ICH and they correlate with stroke severity and outcome. METHODS: Serum MPO concentrations were measured in 128 ICH patients and 128 controls. Odds ratios of dependent variables, including early neurological deterioration, hematoma growth, 1-week mortality, 6-month mortality, 6-month unfavorable outcome (modified Rankin Scale score > 2) and 6-month overall survival, were calculated and adjusted for age, sex, hematoma volume, National Institutes of Health Stroke Scale (NIHSS) score and vascular risk factors. RESULTS: As compared to the controls, the patients had significantly increased serum MPO concentrations. MPO concentrations of the ICH patients were strongly correlated with hematoma volume and NIHSS scores. Serum MPO were independently associated with the above-mentioned study points. Its area under receiver operating characteristic curve was equivalent to those of hematoma volume and NIHSS score. Moreover, serum MPO significantly improved the discriminatory ability of hematoma and NIHSS in predicting 6-month mortality and unfavorable outcome. CONCLUSIONS: Serum MPO concentrations rise in ICH patients and there is a correlation between MPO concentrations and severity or prognosis.


Subject(s)
Cerebral Hemorrhage/blood , Peroxidase/blood , Acute Disease , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Prospective Studies
12.
Clin Chim Acta ; 486: 162-167, 2018 Nov.
Article in English | MEDLINE | ID: mdl-30077639

ABSTRACT

BACKGROUND: Cyclophilin A is involved in brain injury. We investigated the relationship between serum cyclophilin A concentrations, hemorrhagic severity and clinical outcome in intracerebral hemorrhage (ICH). METHODS: We enrolled 105 ICH patients and 105 healthy individuals. Admission serum cyclophilin A concentrations were detected in ICH patients. Hemorrhagic severity was assessed using the National Institutes of Health Stroke Scale (NIHSS) and hematoma volume. Modified Rankin Scale score > 2 was defined as a poor outcome. RESULTS: Serum cyclophilin A concentrations were significantly higher in patients than in controls. There was a close correlation of serum cyclophilin A concentrations with NIHSS scores and hematoma volume. Serum cyclophilin A emerged as an independent predictor for 6-month mortality, overall survival and poor outcome. Moreover, it had a strong discriminatory ability for 6-month mortality and poor outcome. Furthermore, it could significantly improve the prognostic predictive ability of NIHSS scores or hematoma volume alone. CONCLUSIONS: Increasted serum cyclophilin A concentrations are highly associated with stroke severity and prognosis after hemorrhagic stroke.


Subject(s)
Cerebral Hemorrhage/blood , Cerebral Hemorrhage/diagnosis , Cyclophilin A/blood , Acute Disease , Aged , Female , Humans , Male , Middle Aged , Prospective Studies , Survival Rate
13.
Clin Neurol Neurosurg ; 171: 168-173, 2018 08.
Article in English | MEDLINE | ID: mdl-29920451

ABSTRACT

OBJECTIVE: The aim of the present study is to investigate the expression profiles of circular RNAs (circRNAs) in IDH-wild type (IDH-wt) glioblastoma and explore the differences in circRNAs expression between IDH-wt glioblastoma and adjacent normal brain. PATIENTS AND METHODS: circRNA expression profiles were detected by circRNA microarray in three matched pairs of IDH-wt glioblastoma and adjacent normal brain. qRT-PCR was used to verify the differential expression of circRNAs from microarray analysis. Bioinformatics analysis was used to analyze potential functions of the differentially expressed circRNAs in IDH-wt glioblastoma. RESULTS: Compared with the adjacent normal brain tissues, 254 circRNAs were upregulated and 361 circRNAs were downregulated in IDH-wt glioblastoma with a ≥1.5-fold change. A total of 12 differentially expressed circRNAs were randomly selected and validated a good correlation of results from circRNA-seq with qRT-PCR. Gene Ontology (GO) analysis revealed the differentially expressed circRNAs possibly involved in cell division, DNA damage repair, cytoskeleton, and protein ubiquitination. 46 and 50 miRNAs were predicted to be adsorbed by the top 10 upregulated circRNAs and top 10 downregulated circRNAs, respectively. CONCLUSION: Differential expression of circRNAs may be associated with IDH-wt glioblastoma development and progression, and these circRNAs can be identified as biomarkers for prognosis prediction and targets for treatment.


Subject(s)
Biomarkers/blood , Glioblastoma/genetics , MicroRNAs/blood , RNA/blood , Aged , Computational Biology/methods , Down-Regulation , Humans , Male , MicroRNAs/genetics , Middle Aged , RNA, Circular , RNA, Messenger/metabolism , Up-Regulation
14.
Clin Neurol Neurosurg ; 169: 92-97, 2018 06.
Article in English | MEDLINE | ID: mdl-29642043

ABSTRACT

OBJECTIVE: Cytoplasmic polyadenylation element binding protein 4 (CPEB4) is a regulator of gene expression at transcriptional level and has been reported to be associated with biological malignancy in cancers. However, little was known about the correlation between CPEB4 and glioblastoma cell proliferation and the prognostic significance in patients. Our aim was to investigate the functional role and prognostic value of CPEB4 in glioblastoma. PATIENTS AND METHODS: We determined the expression of CPEB4 protein using immunohistochemistry in tissue microarrays containing 278 glioma patients (including 98 primary glioblastomas) and evaluated its association with pathological grades and clinical outcome by univariate and multivariate analyses. And then, lentiviral-mediated RNAi targeting CPEB4 was utilized to study the role of CPEB4 in glioblastoma cell proliferation. RESULTS: In our cohort, CPEB4 expression was positively related to glioma pathological grade (p < 0.01) and elevated in glioblastoma (p < 0.01). High expression of CPEB4 was associated with significantly poor prognosis, and could be identified as an independent risk factor for overall survival (OS) and progression-free survival (PFS) of glioblastoma patients (hazard ratio (HR) = 1.730, p = 0.014 and HR = 1.877, p = 0.004, respectively). In vitro studies further showed that downregulation of CPEB4 significantly reduced the growth rate of T98G and U251 cells comparing with the controls. CONCLUSION: Our study indicated that increased expression of CPEB4 in primary glioblastoma is a novel biomarker for predicting poor outcome of patients and suppression of CPEB4 inhibit tumor cell proliferation, suggesting a potential therapeutic target for glioblastoma.


Subject(s)
Brain Neoplasms/diagnosis , Brain Neoplasms/metabolism , Cell Proliferation/physiology , Glioblastoma/diagnosis , Glioblastoma/metabolism , RNA-Binding Proteins/biosynthesis , Aged , Biomarkers, Tumor/biosynthesis , Biomarkers, Tumor/genetics , Brain Neoplasms/genetics , Cohort Studies , Female , Follow-Up Studies , Glioblastoma/genetics , HEK293 Cells , Humans , Male , Middle Aged , Prognosis , RNA-Binding Proteins/genetics , Survival Rate/trends , Treatment Outcome
15.
Clin Neurol Neurosurg ; 164: 132-137, 2018 01.
Article in English | MEDLINE | ID: mdl-29223793

ABSTRACT

OBJECTIVE: G-protein-coupled receptors 65 (GPR65), identified as an acid-sensing receptor, is overexpressed in several malignancies and promote tumor development. Our aim was to investigate the expression and prognostic value of GPR65 in glioblastoma. MATERIALS AND METHODS: We determined the expression of GPR65 protein using immunohistochemistry in tissue microarrays containing 11 Grade I, 107 Grade II, 47 Grade III, and 102 Grade IV gliomas and 16 normal brains. Then we evaluated its association with pathological grades, prognosis, and recurrence. The Cancer Genome Atlas (TCGA) group (N=528) was further employed to examine transcriptional level of GPR65 in glioblastoma and the correlation between GPR65 expression and clinical outcome. RESULTS: In our cohort, GPR65 expression was positively related to glioma pathological grade (p<0.01) and elevated in glioblastoma (p<0.01). High expression of GPR65 was associated with significantly short overall survival (OS) (p=0.013) and progression-free survival (PFS) (p=0.029), and could be identified as an independent risk factor for OS of glioblastoma patients (Hazard Ratio [HR]=1.596, p=0.037). As an aiding evidence, increased GPR65 mRNA expression was also found in TCGA glioblastoma group (p<0.001) and its high level predicted a poor clinical outcome (OS, p=0.003; PFS, p=0.001). CONCLUSION: Our findings suggest that GPR65 is overexpressed in glioblastoma and its high expression predicts unfavorable clinical outcome for patients. Targeting GPR65 may serve as a potential therapy for treating glioblastoma.


Subject(s)
Brain Neoplasms/genetics , Brain Neoplasms/pathology , Gene Expression Regulation, Neoplastic , Glioblastoma/genetics , Glioblastoma/pathology , Receptors, G-Protein-Coupled/genetics , Adult , Brain Neoplasms/metabolism , Cohort Studies , Databases, Genetic/trends , Female , Glioblastoma/metabolism , Humans , Male , Middle Aged , Prognosis , Receptors, G-Protein-Coupled/biosynthesis
16.
Acta Pharmacol Sin ; 38(11): 1475-1485, 2017 Nov.
Article in English | MEDLINE | ID: mdl-28836580

ABSTRACT

The intercellular communication between leukemia cells and bone marrow mesenchymal stem cells (BM-MSCs) plays more important role in chronic myeloid leukemia (CML) than we previously understood. Recently, we found that microvesicles released from human leukemia cell line K562 (K562-MVs) containing BCR-ABL1 mRNA malignantly transformed normal hematopoietic transplants. Here, we investigated whether K562-MVs contribute to the transformation of human bone marrow mesenchymal stem cells (BM-MSCs). We showed that K562-MVs could be integrated into co-cultured normal BM-MSCs and dose-dependently enhanced the proliferation of BM-MSCs. Meanwhile, K562-MVs (400 ng/mL) significantly increased the expression of BCR-ABL1 in these BM-MSCs, accompanied by the enhanced secretion of TGF-ß1. These BM-MSCs in turn could trigger the TGF-ß1-dependent proliferation of K562 cells. Moreover, we confirmed the presence of BCR-ABL1 in circulating MVs from 11 CML patients. Compared to the normal BM-MSCs, the BM-MSCs from CML patients more effectively increased the BCR-ABL1 expression and TGF-ß1 secretion in K562 cells as well as the proliferation of K562 cells. Our findings enrich the mechanisms involved in the interaction between leukemia cells and BM-MSCs and provide novel ways to monitor minimal residual disease and worthwhile approaches to treat CML.


Subject(s)
Bone Marrow Cells/metabolism , Cell Communication , Cell Transformation, Neoplastic/genetics , Cell-Derived Microparticles/genetics , Fusion Proteins, bcr-abl/genetics , Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics , Mesenchymal Stem Cells/metabolism , Adolescent , Adult , Bone Marrow Cells/pathology , Cell Proliferation , Cell Transformation, Neoplastic/metabolism , Cell Transformation, Neoplastic/pathology , Cell-Derived Microparticles/pathology , Cell-Free Nucleic Acids/blood , Cell-Free Nucleic Acids/genetics , Coculture Techniques , Female , Fusion Proteins, bcr-abl/blood , Humans , K562 Cells , Leukemia, Myelogenous, Chronic, BCR-ABL Positive/blood , Leukemia, Myelogenous, Chronic, BCR-ABL Positive/pathology , Male , Mesenchymal Stem Cells/pathology , Middle Aged , RNA, Messenger/blood , RNA, Messenger/genetics , Time Factors , Transforming Growth Factor beta1/metabolism , Tumor Microenvironment , Young Adult
17.
Clin Chim Acta ; 471: 55-61, 2017 Aug.
Article in English | MEDLINE | ID: mdl-28526531

ABSTRACT

BACKGROUND: CXC chemokine ligand-12 (CXCL12), a member of the CXC chemokine subfamily, is involved in both focal angiogenesis and inflammatory reactions. We examined serum CXCL12 concentration in intracerebral hemorrhage (ICH) patients and its correlation to stroke severity and outcome. METHODS: The study was carried out on 105 ICH patients on 105 healthy controls. Serum samples were at admission obtained to measure CXCL12 concentrations. The National Institutes of Health Stroke Scale (NIHSS) and hematoma volume were recorded to assess stroke severity. RESULTS: As compared to the controls, CXCL12 concentrations were significantly increased in the patients. Also, non-survivors within 6months and patients with an unfavorable outcome (modified Rankin Scale score>2) at 6months had higher CXCL12 concentrations than other remaining ones. CXCL12 concentrations had positive correlation with NIHSS scores and hematoma volume. Serum CXCL12 significantly discriminated patients at risk of 6-month mortality and 6-month unfavorable outcome under receiver operating characteristic curve. Moreover, serum CXCL12 was independently associated with the mortality, overall survival and unfavorable outcome. CONCLUSIONS: Serum CXCL12 concentrations are enhanced after ICH and CXCL12 in serum has the potential to reflect severity and prognosis following hemorrhagic stroke.


Subject(s)
Cerebral Hemorrhage/blood , Chemokine CXCL12/blood , Acute Disease , Aged , Case-Control Studies , Cerebral Hemorrhage/complications , Cerebral Hemorrhage/diagnosis , Cerebral Hemorrhage/mortality , Female , Humans , Male , Prognosis , Stroke/complications
18.
J Huazhong Univ Sci Technolog Med Sci ; 37(2): 179-184, 2017 Apr.
Article in English | MEDLINE | ID: mdl-28397044

ABSTRACT

Increasing studies have demonstrated that interferon gamma (IFN-γ), which serves as a critical inflammatory cytokine, is essential to induce the immunosuppressive effects of mesenchymal stem cells (MSCs). However, the mechanisms underlying the enhanced immunosuppressive effects of IFN-γ-stimulated MSCs (γMSCs) are not fully understood. MSC-derived microvesicles (MSC-MVs) have been viewed as potential pivotal mediators of the immunosuppressive effects of MSCs. Moreover, microRNAs (miRNAs) are important regulators of immunological processes and can be shuttled from cell to cell by MVs. The aim of our study was to analyze the the miRNA expression signature of MVs derived from γMSCs (γMSC-MVs), which may provide better understanding of the immunosuppressive property of their parent cells. Through miRNA microarray and bioinformatics analysis, we found 62 significantly differentially expressed miRNAs (DEMs) in γMSC-MVs compared with MSC-MVs. And the potential target genes and signaling pathways regulated by DEMs were predicted and analyzed. Interestingly, many DEMs and predicted signaling pathways had been demonstrated to be involved in immunoregulation. Furthermore, the network between immunoregulation-related pathways and relevant DEMs was constructed. Collectively, our research on the miRNA repertoires of γMSC-MVs not only provides new perspectives into the mechanisms underlying the enhanced immunosuppressive property of γMSCs, but also paves the way to clinical application of these potent organelles in the future.


Subject(s)
Cell-Derived Microparticles/genetics , Interferon-gamma/pharmacology , Mesenchymal Stem Cells/immunology , MicroRNAs/genetics , Cell-Derived Microparticles/drug effects , Cells, Cultured , Computational Biology/methods , Gene Expression Regulation/drug effects , Gene Regulatory Networks , Humans , Mesenchymal Stem Cells/drug effects , Oligonucleotide Array Sequence Analysis , Signal Transduction
19.
Article in Chinese | WPRIM (Western Pacific) | ID: wpr-238378

ABSTRACT

Increasing studies have demonstrated that interferon gamma (IFN-γ),which serves as a critical inflammatory cytokine,is essential to induce the immunosuppressive effects of mesenchymal stem cells (MSCs).However,the mechanisms underlying the enhanced immunosuppressive effects of IFN-γ-stimulated MSCs (γMSCs) are not fully understood.MSC-derived rnicrovesicles (MSC-MVs) have been viewed as potential pivotal mediators of the immunosuppressive effects of MSCs.Moreover,microRNAs (miRNAs) are important regulators of immunological processes and can be shuttled from cell to cell by MVs.The aim of our study was to analyze the the miRNA expression signature of MVs derived from γMSCs (γMSC-MVs),which may provide better understanding of the immunosuppressive property of their parent cells.Through miRNA microarray and bioinformatics analysis,we found 62 significantly differentially expressed miRNAs (DEMs) in γMSC-MVs compared with MSC-MVs.And the potential target genes and signaling pathways regulated by DEMs were predicted and analyzed.Interestingly,many DEMs and predicted signaling pathways had been.demonstrated to be involved in immunoregulation.Furthermore,the network between immunoregulation-related pathways and relevant DEMs was constructed.Collectively,our research on the miRNA repertoires of γMSC-MVs not only provides new perspectives into the mechanisms underlying the enhanced immunosuppressive property of γMSCs,but also paves the way to clinical application of these potent organelles in the future.

20.
Clin Chim Acta ; 461: 103-9, 2016 Oct 01.
Article in English | MEDLINE | ID: mdl-27496080

ABSTRACT

BACKGROUND: Signal peptide-Cub-Epidermal growth factor domain-containing protein 1 (SCUBE1) in peripheral blood, which is identified as a marker for coagulation, was reported to be an independent predictor of poor outcome in some illnesses. We investigated the clinical utility of serum SCUBE1 in the prognosis of intracerebral hemorrhage (ICH). METHODS: A total of 128 consecutive patients, admitted to emergency service due to acute ICH, and 128 healthy individuals were included in this prospective study. The patients were followed up until 6months or death. An unfavorable outcome was defined as modified Rankin Scale score>2. RESULTS: Serum SCUBE1 concentration was markedly higher in patients than in controls and was associated with hematoma volume, National Institutes of Health Stroke Scale (NIHSS) score and blood platelet count. After adjustment for hematoma volume and NIHSS score, it was still related to early neurological deterioration, hematoma growth, 1-week mortality, 6-month mortality, 6-month unfavorable outcome and 6-month overall survival. Additionally, serum SCUBE1 significantly improved areas under receiver operating characteristic curve of hematoma volume and NIHSS score to predict 6-month unfavorable outcome. CONCLUSIONS: Increased serum SCUBE1 concentrations have close relation to increasing severity and poor prognosis of ICH.


Subject(s)
Cerebral Hemorrhage/blood , Membrane Proteins/blood , Acute Disease , Aged , Aged, 80 and over , Calcium-Binding Proteins , Cerebral Hemorrhage/diagnosis , Female , Humans , Male , Middle Aged , Prognosis , Prospective Studies
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