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1.
Chinese Pharmacological Bulletin ; (12): 551-556, 2024.
Article in Chinese | WPRIM | ID: wpr-1013582

ABSTRACT

Aim To explore the role of SIRT1/Nrf2 / HO-1 in alleviating the cognitive function impairment by sevoflurane treatment in a mouse model of postoperative cerebral reperfusion. Methods C57BL/6J mice were randomly divided into five groups: sham operation group, hemorrhagic shock reperfusion group, sevoflurane postconditioning group, sevoflurane postcondition-ing + SIRT1 inhibitor group and sevoflurane postconditioning + Nrf2 inhibitor group. Mice were subjected to Morris water maze test after cerebral ischemia reperfusion. The ATP, superoxide dismutase (SOD), ROS and MDA contents in tissue of mice were detected. SIRT1, Nrf2 and HO-1 proteins in tissue were detected by Western blot. Results After hemorrhagic shock, the learning and memory ability of mice was reduced.ATP and SOD concentration in hippocampus was reduced , MDA and ROS concentration increased, and the SIRT, Nrf2 and HO-1 concentration was reduced. Sevoflurane improved the cognitive dysfunction and oxi-dative damage in postoperative mice, and the neuro-protective effect of sevoflurane on hemorrhagic shock and resuscitation mice was weakened followed with SIRT1 and Nrf2 inhibitors. Conclusion Sevoflurane probably alleviates the oxidative reaction damage and cognitive impairment caused by cerebral reperfusion in mice through SIRT1/Nrf2/H0-1 pathway.

2.
Acta Physiologica Sinica ; (6): 611-622, 2023.
Article in English | WPRIM | ID: wpr-1007776

ABSTRACT

Post-traumatic stress disorder (PTSD) has been reported to be associated with a higher risk of cardiovascular disease. The amygdala may have an important role in regulating cardiovascular function. This study aims to explore the effect of amygdala glutamate receptors (GluRs) on cardiovascular activity in a rat model of PTSD. A compound stress method combining electrical stimulation and single prolonged stress was used to prepare the PTSD model, and the difference of weight gain before and after modeling and the elevated plus maze were used to assess the PTSD model. In addition, the distribution of retrogradely labeled neurons was observed using the FluoroGold (FG) retrograde tracking technique. Western blot was used to analyze the changes of amygdala GluRs content. To further investigate the effects, artificial cerebrospinal fluid (ACSF), non-selective GluR blocker kynurenic acid (KYN) and AMPA receptor blocker CNQX were microinjected into the central nucleus of the amygdala (CeA) in the PTSD rats, respectively. The changes in various indices following the injection were observed using in vivo multi-channel synchronous recording technology. The results indicated that, compared with the control group, the PTSD group exhibited significantly lower weight gain (P < 0.01) and significantly decreased ratio of open arm time (OT%) (P < 0.05). Retrograde labeling of neurons was observed in the CeA after microinjection of 0.5 µL FG in the rostral ventrolateral medulla (RVLM). The content of AMPA receptor in the PTSD group was lower than that in the control group (P < 0.05), while there was no significant differences in RVLM neuron firing frequency and heart rate (P > 0.05) following ACSF injection. However, increases in RVLM neuron firing frequency and heart rate were observed after the injection of KYN or CNQX into the CeA (P < 0.05) in the PTSD group. These findings suggest that AMPA receptors in the amygdala are engaged in the regulation of cardiovascular activity in PTSD rats, possibly by acting on inhibitory pathways.


Subject(s)
Rats , Animals , Rats, Sprague-Dawley , Stress Disorders, Post-Traumatic , Receptors, AMPA , 6-Cyano-7-nitroquinoxaline-2,3-dione/pharmacology , Receptors, Glutamate/metabolism , Amygdala , Weight Gain , Medulla Oblongata/physiology , Blood Pressure
3.
Journal of Experimental Hematology ; (6): 1720-1725, 2023.
Article in Chinese | WPRIM | ID: wpr-1010028

ABSTRACT

OBJECTIVE@#To explore the value of multiple detection methods based on histopathology and supplemented by bone marrow or peripheral blood sample detections in the comprehensive diagnosis of mantle cell lymphoma (MCL).@*METHODS@#The clinical, immunophenotypic, pathologic, cytogenetic and molecular features of 153 newly diagnosed MCL patients admitted to the hematology department of our hospital from May 2009 to September 2022 were analyzed.@*RESULTS@#144 (96.6%) of the 149 MCL patients who underwent marrow or peripheral blood IGH/CCND1 FISH detection at initial diagnosis were positive, of which 36 cases (24.2%) had a low proportion positive. The immunophenotypes in 115 patients were analyzed by flow cytometry (FCM), 89 cases (77.4%) conformed to MCL while 23 cases (20.0%) were initially diagnosed as B-cell lymphoproliferative disorders (B-LPD). Of the 75 cases who performed bone marrow biopsy, 50 cases (66.7%) had morphological and immunophenotypic characteristics consistent with MCL, 15 cases (20.0%) were classified as B-LPD, and 10 cases with no obvious abnormality. 77 patients underwent histopathology examination, of which 73 cases (94.8%) had typical clinicopathological features of MCL, including 2 CCND1 negative MCL, 2 pleomorphic variants, 5 pleomorphic variants and 4 cases diagnosed as other leukemia or lymphoma. Among 153 cases of MCL, 128 cases were classic MCL(cMCL), and another 25 cases (16.3%) were diagnosed as leukemic non-lymph node MCL (lnnMCL). The incidence of IGHV mutation, TP53 mutation and CD23 expression positive were significantly different between cMCL and lnnMCL.@*CONCLUSION@#Histopathology is still the main standard for the diagnosis of cMCL, and detection based on bone marrow or peripheral blood samples is an important means for the diagnosis of lnnMCL. Single marker or examination can cause a certain proportion of misdiagnosis. The accurate diagnosis of MCL depends on a combination of multiple detection methods.


Subject(s)
Adult , Humans , Lymphoma, Mantle-Cell/genetics , Bone Marrow/pathology , Leukemia/pathology , Mutation , Immunophenotyping
4.
Chinese journal of integrative medicine ; (12): 1059-1065, 2023.
Article in English | WPRIM | ID: wpr-1010317

ABSTRACT

BACKGROUND@#Ventricular remodeling after acute anterior wall ST-segment elevation myocardial infarction (AAMI) is an important factor in occurrence of heart failure which additionally results in poor prognosis. Therefore, the treatment of ventricular remodeling needs to be further optimized. Compound Danshen Dripping Pills (CDDP), a traditional Chinese medicine, exerts a protective effect on microcirculatory disturbance caused by ischemia-reperfusion injury and attenuates ventricular remodeling after myocardial infarction.@*OBJECTIVE@#This study is designed to evaluate the efficacy and safety of CDDP in improving ventricular remodeling and cardiac function after AAMI on a larger scale.@*METHODS@#This study is a multi-center, randomized, double-blind, placebo-controlled, parallel-group clinical trial. The total of 268 patients with AAMI after primary percutaneous coronary intervention (pPCI) will be randomly assigned 1:1 to the CDDP group (n=134) and control group (n=134) with a follow-up of 48 weeks. Both groups will be treated with standard therapy of ST-segment elevation myocardial infarction (STEMI), with the CDDP group administrating 20 tablets of CDDP before pPCI and 10 tablets 3 times daily after pPCI, and the control group treated with a placebo simultaneously. The primary endpoint is 48-week echocardiographic outcomes including left ventricular ejection fraction (LVEF), left ventricular end-diastolic volume index (LVEDVI), and left ventricular end-systolic volume index (LVESVI). The secondary endpoint includes the change in N terminal pro-B-type natriuretic peptide (NT-proBNP) level, arrhythmias, and cardiovascular events (death, cardiac arrest, or cardiopulmonary resuscitation, rehospitalization due to heart failure or angina pectoris, deterioration of cardiac function, and stroke). Investigators and patients are both blinded to the allocated treatment.@*DISCUSSION@#This prospective study will investigate the efficacy and safety of CDDP in improving ventricular remodeling and cardiac function in patients undergoing pPCI for a first AAMI. Patients in the CDDP group will be compared with those in the control group. If certified to be effective, CDDP treatment in AAMI will probably be advised on a larger scale. (Trial registration No. NCT05000411).


Subject(s)
Humans , ST Elevation Myocardial Infarction/therapy , Stroke Volume , Ventricular Remodeling , Prospective Studies , Microcirculation , Ventricular Function, Left , Myocardial Infarction/etiology , Treatment Outcome , Percutaneous Coronary Intervention/adverse effects , Heart Failure/drug therapy , Drugs, Chinese Herbal/therapeutic use , Randomized Controlled Trials as Topic , Multicenter Studies as Topic
5.
Journal of Experimental Hematology ; (6): 49-55, 2022.
Article in Chinese | WPRIM | ID: wpr-928669

ABSTRACT

OBJECTIVE@#To explore the expression characteristics of antigens and functional markers of natural killer (NK) cells in patients with acute myeloid leukemia (AML).@*METHODS@#Multi-parameter flow cytometry was used to detect NK cell surface markers and their functional indicators in 56 newly diagnosed AML patients and 24 healthy controls, including activating receptors NKG2D, NKP46, DNAM-1, and killing indicators granzyme B, perforin.@*RESULTS@#Referring to the WHO hematopoiesis and lymph tissue tumor classification criteria, 56 cases were roughly divided into three types: AML M1, M2, and M4/M5. However, there was no differences about NK cells among the three types, so it was no longer subdivided. NK cells were divided into two groups: CD3-CD56hiCD16- (CD56hiNK) and CD3-CD56dimCD16+ (CD56dimNK). Compared with CD56dimNK cell population, except for NKP46, the positive expression levels of NKG2D and other receptors of CD56hiNK cells in AML patients decreased (P<0.001). Compared with healthy controls, the proportion of CD56hiNK cells in AML patients increased, while the number and proportion of NK cells and proportion of CD56dimNK cells significantly decreased (P<0.05). The proportion of perforin in CD56hiNK cells significantly increased (P<0.05). The expression of DNAM-1 in CD56hiNK cells, NKG2D, DNAM-1, and perforin in CD56dimNK cells decreased significantly (P<0.05). There was no statistically significant difference in expression of other functional indexes in AML patients compared with corresponding indexes of healthy controls. In addition, the proportion of CD56hiNK cells was positively correlated with the expression of CD34+ in AML (r=0.303).@*CONCLUSION@#Compared with CD56dimNK, the ratio of CD56hiNK and the expression of functional markers in AML patients are lower. Compared with healthy controls, the number and expression ratio of NK cells in AML patients decrease and the expression of functional markers is abnormal, indicating that its function is impaired.


Subject(s)
Humans , CD56 Antigen , Flow Cytometry , Killer Cells, Natural , Leukemia, Myeloid, Acute
6.
China Journal of Chinese Materia Medica ; (24): 5052-5063, 2021.
Article in Chinese | WPRIM | ID: wpr-921644

ABSTRACT

Compound Renshen Buqi Granules have been widely used to treat chronic heart failure(CHF) due to Qi deficiency and blood stasis, but the mechanism of action remains unclear. This paper explored the pathogenesis of CHF due to Qi deficiency and blood stasis and the intervention mechanism of Compound Renshen Buqi Granules based on quantitative proteomics for uncovering the biological basis. SD rats were divided into the normal control(N) group, normal+Compound Renshen Buqi Granules(ND) group, model(M) group, model+Compound Renshen Buqi Granules(D) group, and positive control(Y) group. The rat model of CHF due to Qi deficiency and blood stasis was established by ligation of the left anterior descending(LAD) coronary artery and chronic sleep deprivation. The rats in the ND group and D group were provided with Compound Renshen Buqi Granules, while those in the Y group received valsartan. Six weeks later, the serum was sampled and the data-dependent acquisition(DDA) was employed for the non-targeted quantitative proteomics analysis of the differences in protein expression among groups, followed by the targeted analysis of differentially expressed proteins(DEPs) generated by data-independent acquisition(DIA). Compared with the N group, the rats in the M group pre-sented with decreased body weight, grip strength, and pulse amplitude and increased RGB value on the tongue surface. The pathomorphological examination revealed inflammatory cell infiltration, cell degeneration and necrosis, tissue fibrosis, etc. After the intervention with Compound Renshen Buqi Granules, multiple indicators were reversed. As demonstrated by proteomics results, there were 144 and 111 DEPs found in the M group and ND group in comparison with the N group. Compared with the M group, 107 and 194 DEPs were found in the D group and the Y group, respectively. Compared with the ND group, 119 DEPs were detected in the D group. As illustrated by DIA-based verification, the quantitative results of six proteins in each group were consistent with those by DDA. The syndrome indicators and pathomorphological examination results demonstrated that the protein expression profile of rats with CHF due to Qi deficiency and blood stasis changed obviously. However, Compound Renshen Buqi Granules were able to reverse the differential expression of immune proteins to regulate CHF of Qi deficiency and blood stasis syndrome, which has provided clues for figuring out the pathogenesis of CHF due to Qi deficiency and blood stasis and the intervention mechanism of Compound Renshen Buqi Granules.


Subject(s)
Animals , Rats , Heart Failure/drug therapy , Medicine, Chinese Traditional , Panax , Proteomics , Qi , Rats, Sprague-Dawley
7.
Journal of Experimental Hematology ; (6): 1876-1880, 2019.
Article in Chinese | WPRIM | ID: wpr-781525

ABSTRACT

OBJECTIVE@#To investigate the expression level of T lymphocyte subsets in elderly patients with newly diagnosed multiple myeloma (NDMM), and to evaluated the prognostic value of T lymphocytic abnormalities in elderly NDMM patients.@*METHODS@#Pretreated peripheral blood of 39 newly diagnosed elder patients with MM was tested by multi-parameter flow cytometry (MFC) to quantitatively detect T lymphocyte subsets, including CD4T cell, CD8T cell, and CD4/CD8 ratio. The prognostic values T-lymphocyte subset were evaluated in newly diagnosed elderly patients with MM.@*RESULTS@#The median follow-up time was 21.5 (range, 3.0-66.0) months. Absolute counts of CD4T cell and CD4/CD8 ratio positively correlated with prognosis. In the multivariate COX analysis, lower CD4/CD8 ratio and CD4T cell counts were identified to be independent adverse prognostic factors for OS.@*CONCLUSION@#Lower CD4/CD8 ratio and CD4T cell counts at initial diagnosis are independent unfavorable prognostic factors for elderly patients with MM, and T lymphocyte subsets are crucial indicators for MM patients' prognosis.


Subject(s)
Aged , Humans , CD4-CD8 Ratio , Flow Cytometry , Lymphocyte Count , Lymphocyte Subsets , Multiple Myeloma , Prognosis , T-Lymphocyte Subsets
8.
Cancer Research and Treatment ; : 368-377, 2019.
Article in English | WPRIM | ID: wpr-719330

ABSTRACT

PURPOSE: Extranodal natural killer/T-cell lymphoma, nasal type (ENKTL) is a rare subtype of non-Hodgkin lymphoma, and asparaginase-based regimens are the best first-line treatments. Data on the role of specific circulating lymphocyte subsets in the progression of ENKTL are limited. The aim of this study was to investigate the clinical correlation and distribution of circulating absolute CD4+ T-cell counts (ACD4Cs) in ENKTL. MATERIALS AND METHODS: We retrospectively searched medical records for 70 newly diagnosed ENKTL patients treated with pegaspargase-based regimens. Comparison of ACD4Cs as a continuous parameter in different groups was calculated. Univariate and multivariate analyses were used to assess prognostic factors for overall survival (OS) and progression-free survival (PFS). RESULTS: Stage III/IV, B symptoms, elevated lactate dehydrogenase, monocytopenia, high-intermediate and high risk International Prognostic Index (IPI) and Korean Prognostic Index (KPI), high risk Prognostic Index of Natural Killer Lymphoma (PINK), and lower lymphocytes were significantly associated with low ACD4C at diagnosis. With a median follow-up time of 32 months, patients who had an ACD4C < 0.30×109/L had a worse OS. Median OS was 11 months and median PFS was 5 months in the low ACD4C cohort. There were significant differences in both OS and PFS between the two cohorts. Moreover, multivariate Cox analysis identified ACD4Cs as an independent predictor for OS and PFS. CONCLUSION: Low ACD4Cs were associated with poorer survival and could act as a negative predictor for ENKTL patients treated with asparaginase-based regimens.


Subject(s)
Humans , Cell Count , Cohort Studies , Diagnosis , Disease-Free Survival , Drug Therapy , Follow-Up Studies , L-Lactate Dehydrogenase , Lymphocyte Subsets , Lymphocytes , Lymphoma , Lymphoma, Extranodal NK-T-Cell , Lymphoma, Non-Hodgkin , Medical Records , Multivariate Analysis , Prognosis , Retrospective Studies , T-Lymphocytes
9.
Journal of Experimental Hematology ; (6): 958-963, 2018.
Article in Chinese | WPRIM | ID: wpr-689545

ABSTRACT

<p><b>OBJECTIVE</b>To analyze the clinical and laboratory features of acute myeloid leukemia (AML) with cuplike nuclei morphology.</p><p><b>METHODS</b>One hundred and seventy patients diagnosed with AML (M1andM2) between December 2009 and December 2016 were included in the study. Bone marrow smears were prepared for morphologic alanalysis, the immunophenotype was analyzed by flow cytometry and the RHG-banding was for conventional cytogenetic assay (CCA) ,gene mutation was detected by sequencing.</p><p><b>RESULTS</b>Among the 170 AMLpatients, 67 were diagnosed as M1 and 103 patients was diagnosed as M2, 43 patients(25.3%) defined as cuplike nuclei-positive, among them 38patients (88.4%) were M1 while only 5 patients (11.6%) were with M2(P<0.01). No significant value about sex(P> 0.05) between cuplike nuclei-positive and -negative group, while older patients were found in cuplike nuclei-positive group (P<0.05). Higher peroxydas (POX) ratio (P<0.05) and integration (P<0.05) were found in cuplike nuclei- positive group. Furthermore, the patients with cuplike nuclei-positive lack the expressions of CD34 (P<0.01) and HLA-DR(P<0.01) while no other immunophenotype markers were found. Among the 152 patients (89.4%) for genetic analysis ,83.8% karyotype of the cuplike nuclei-positive group were normal while only 54.8 of negative group was normal by CCA. Molecular biology analysis showed that the patients in cuplike nuclei-positive group have significantly highe rNMP1 (P<0.01) and FLT3(P<0.01) mutations as compared with the negative group. Furthermore, the relationship of the ratio o fcuplike nuclei and the type of gene mutations were investigated, and no significant associations were found. However, it was found that the patients with FLT3 mutation displayed more biological nuclear invagination than the patients with NPM1 mutations (P<0/01).</p><p><b>CONCLUSION</b>AML patients with positive cuplike nuclei have characteristic morphological changes, typical immunophenotype with HLA-DR- and CD34, normal karyotype accompanied by NPM1 and FLT3 mutations.</p>


Subject(s)
Humans , Cell Nucleus , Leukemia, Myeloid, Acute , Mutation , Nuclear Proteins , Prognosis , fms-Like Tyrosine Kinase 3
10.
Journal of Experimental Hematology ; (6): 328-333, 2017.
Article in Chinese | WPRIM | ID: wpr-311543

ABSTRACT

<p><b>OBJECTIVE</b>Cytokine receptor-like factor 2(CRLF2) plays an important role in the development of normal B lymphocytes, which can mediate early B cell proliferation and survival. The aim of this study was to investigate the mutations of CRLF2 and its clinical significance in adult patients with acute lymphoblastic leukemia(ALL).</p><p><b>METHODS</b>Exons of CRLF2 were amplified, then the DNA was purified and sequenced; the frequency, position, types and clinical significance of CRLF2 mutations were analyzed.</p><p><b>RESULTS</b>6 types of genetic alterations in CRLF2 were found, among them the R186S prompted better prognosis, while L86I, F232F and W255C associated with poor prognosis.</p><p><b>CONCLUSION</b>CRLF2 mutations may play an important role in the development and progressions of adult patients with ALL, and these genetic abnormalities may associate with clinical outcome.</p>

11.
Journal of Experimental Hematology ; (6): 1069-1073, 2017.
Article in Chinese | WPRIM | ID: wpr-301775

ABSTRACT

<p><b>OBJECTIVE</b>To explore the expression of CD27 antigen in patients with multiple myeloma(MM), and its clinical diagnostic value, as well as the correlation of CD27 with clinical features and genetic abnormalities.</p><p><b>METHODS</b>Using 8 color flow cytometry, the immunophenotype of 123 MM patients' marrow cells was examined, while 51 cases of normal plasma cell reactive prolieration were used as control. Antibodies are as follows:ckappa-FITC/clambda-PE/ CD38-ECD/CD45-PERCP/CD19-PC7/ CD27-APC/CD138-BV421/ CD56-BV510. For differentiation of abnormal plasma cells from normal or reactive plasma cells, FS INT /FS PEAK with CD138/CD38 gating strategy was used to measure cell markers CD138,CD38, CD56, CD19, ckappa, clambda and CD45, then the expression rate of CD27 and mean fluorescence intensity(MFI) were analyzed for its diagnostic value in MM. At the same time, the laboratory data of 107 cases of MM patients were analyzed and the fluorescence in situ hybridization (FISH) was used to detecte 1q21 amplification, 13q14 deletion, p53 deletion and IGH rearrangement in 34 cases, then the clinical features and genetic abnormalities were compared between CD27and CD27MM patients.</p><p><b>RESULTS</b>The CD27 positive rate of abnormal plasma cells in MM patients was 48% (59/123) (percentage ≥20% as positive criterion), MFI was 31.3±35.6; while the positive rate of normal or reactive plasma cells were 100% (51/51), the MFI was 93.7±6.3. The positive rate and MFI of CD27 in MM patients were significantly lower than that in normal or reactive plasma cells (P<0.01). Laboratory examination of 58 cases of CD27 negative and 49 cases of CD27 positive MM patients indicated that no significant differences were shown on disease progress parameter, such as hemoglobin, albumin, serum calcium, serum creatinine,and no notable differences were involved in the analysis of prognostic factors between the 2 groups, such as β2-MG microglobulin and LDH levels (P<0.05). The 1q21 amplification, 13q14 deletion, p53 deletion, and IGH rearrangement results all were not significantly different between 17 cases of CD27 negative and 17 cases of CD27 positive MM patients(P<0.05).</p><p><b>CONCLUSION</b>CD27 has a unique expression profile, and its negative or weak expression is highly suggestive for MM. The 8 color flow cytometry can be used to analyze the expression of multiple antigens, which can provide a reliable evidence for the diagnosis and differential diagnosis of MM disease.</p>

12.
Journal of Experimental Hematology ; (6): 1295-1299, 2017.
Article in Chinese | WPRIM | ID: wpr-301733

ABSTRACT

<p><b>OBJECTIVE</b>To investigate the distribution of T helper (Th9) cells and its relationship with clinical characteristics of patients with acute myeloid leukemia (AML), and to analyze the activating levels of different transcriptional factors in Th9 cells.</p><p><b>METHODS</b>The peripheral blood specimens of 102 AML patients and 83 healthy persons as controls were collected, then the T cells of peripheral blood in AML patients and controls were isolated by using CD3 magnetic beads, the mRNA expression of IL-9 was detected by real-time quantitative PCR, the Th9(CD4IL-9) cell levels in diffrent stages and activating level of Th9 coexpression with IL-9 were detected by flow cytometry.</p><p><b>RESULTS</b>The mRNA expression of IL-9 in peripheral blood of AML M2 and M3 patients was significantly higher than that in control groups (P<0.01), at same time the CD4IL-9cell rate was significantly higher than that in control group also(P<0.01). The results of dynamically monitoring the distribution of Th9 cells in AML-M2 and M3 patients showed that the Th9 cell rate and the mRNA expression of IL-9 in newly diagnosed M2 and M3, and relapsed M2 groups were significantly higher than those of M2 and M3 in remission (P<0.01); the detection results of IL-9co-expression with transcriptional factors (SMAD3, IRF-1and IRF-4) indicated that the percantage of Th9 pSMAD3cells in peripheral blood of newly diagnosed and relapsed M2 and M3 patients was significantly higher than that in M2 and M3 patients in remission (P<0.01); on the contrary, the percentage of Th9 IRF-1cells in peripheral blood of M2 and M3 patients in remission was significantly higher than that in newly diagnosed M2 and M3 patients (P<0.01).</p><p><b>CONCLUSION</b>The distribution of T helper cells in peripheral blood of AML-M2 and M3 patients significantly increases, moreover, correlates with disease status. The prediction of Th9 cell functions should be performed in combination with it transcriptional factors which have inmportant significance for microenvironment of tumors in AML patients.</p>

13.
Journal of Experimental Hematology ; (6): 1231-1234, 2015.
Article in Chinese | WPRIM | ID: wpr-274059

ABSTRACT

<p><b>OBJECTIVE</b>To explore the immunophenotype characteristics of newly diagnosed patients with CD56⁺ acute myeloid leukemia (AML).</p><p><b>METHODS</b>Combining with cytomorphology, four-color flow cytometry was used to analyze the immunophenotype of 342 AML patients with CD56⁺ or CD56⁻.</p><p><b>RESULTS</b>In 342 AML patients, the CD56⁺ expression was found in 83 AML patients who accounted for 24.27% and included 10 cases of M1, 45 cases of M2, 5 cases of M3, 6 cases of M6 and 17 cases of M5. The statistical analysis showed that there was statistical difference between CD56⁺ and CD11b⁺ patients (P < 0.05), but there was no statistical difference between CD56⁺ and HLA-DR, CD34, CD38, CD13, CD33, CD15, CD117, CD14, CD64, CD2, CD7, CD5, CD3, CD4, CD10, CD19, CD20, CD22 (P > 0.05).</p><p><b>CONCLUSION</b>AML with only CD56 positive always has poor prognosis, thus the prognosis of patients with CD56⁺ AML accompanied by other antigens still needs more research.</p>


Subject(s)
Humans , CD56 Antigen , Metabolism , Flow Cytometry , Immunophenotyping , Leukemia, Myeloid, Acute , Classification , Prognosis
14.
Journal of Experimental Hematology ; (6): 1531-1534, 2014.
Article in Chinese | WPRIM | ID: wpr-340464

ABSTRACT

This study was aimed to investigate the relationship between expression of CD200 antigen and clinical characteristics in AML patients and to analyse the value of CD200 in evaluation of AML prognosis. The CD200 and immunophenotypes were detected by flow cytometry, the chromosome karyotypes were determined by R banding, the FISH was used to measure the AML1/ETO, PML/RARa and inv(16), and PCR technique was used to detect the fusion genes AML1/ETO and PML/RARα. The results showed that the positive rate of CD200 antigen expression in 54 patients was 57.4% (31/54), the CD200 antigen expression between sex and age of patients was no significant different (P > 0.05). There was significant difference of CD200 expression between CD34 and CD117 (P < 0.05), but the difference of CD200 expression in chromosome karyotypes was no significant difference(P > 0.05). Moreover, there was significant difference of CD200 expression in CD34 and CD117 of CBF positive AML patients (P < 0.05). It is concluded that the CD200 antigen expression in AML may associate with a poor prognosis of patients.


Subject(s)
Humans , Antigens, CD , Allergy and Immunology , Chromosome Banding , Immunophenotyping , Karyotyping , Leukemia, Myeloid, Acute , Diagnosis , Genetics , Allergy and Immunology , Oncogene Proteins, Fusion , Prognosis
15.
Journal of Experimental Hematology ; (6): 1206-1211, 2014.
Article in Chinese | WPRIM | ID: wpr-302319

ABSTRACT

PAX5 is an important transcription factor of paired-box(PAX) family. The aim of this study was to investigate the mutations and expression of PAX5 and its clinical significance in adult patients with acute lymphoblastic leukemia (ALL). Reverse transcription polymerase chain reaction (RT-PCR) and genomic PCR were performed to detect the deletions of PAX5 and point mutations of PAX5 exon 2-10 in 101 cases of adult ALL and were confirmed by cloning and sequencing. In addition, quantitative PCR (qPCR) was performed to evaluate the expression of PAX5. Furthermore, the correlations of mutations and expression of PAX5 with clinical parameters were analyzed, and the prognostic significance was evaluated as well. The results showed that PAX5 mutations were observed in 8 of 101 (7.9%) patients with B-ALL. A total of 9 types of mutations were detected, including 4 types of deletions, 4 types of point mutations and 1 insertion mutation; percentage of patients with age ≥ 50 years was higher in PAX5 mutation group than in wide-type group (62.5% vs 21.5%,P = 0.031) . The statistical differences were observed in B-cell subtype, initial platelet count and immunophenotypes between high and low expression of PAX5 (P < 0.05) . In addition, patients with high expression of PAX5 had higher first complete remission rate (86.7% vs 62.5%, P = 0.030) and 6-month overall survival rate (75.0% vs 50.0%, P = 0.034) compared with patients with low expression of PAX5. It is concluded that deletion/insertion/point mutations and aberrant expression of PAX5 can be observed in adult patients with B-ALL. Mutations and aberrant expression of PAX5 correlated with clinical parameters and have important clinical significance.


Subject(s)
Adult , Humans , Exons , Gene Expression Regulation, Leukemic , Mutation , PAX5 Transcription Factor , Genetics , Precursor Cell Lymphoblastic Leukemia-Lymphoma , Genetics , Prognosis , Sequence Deletion
16.
Journal of Experimental Hematology ; (6): 1212-1216, 2014.
Article in Chinese | WPRIM | ID: wpr-302318

ABSTRACT

Lymphoid enhancer factor 1 (LEF1) is a key transcription factor in Wingless-type (Wnt) pathway. The present study was aimed to explore the genetic mutation and expression of LEF1, and their clinical significance in adult patients with acute lymphocytic leukemia (ALL). Genomic DNA was amplified and sequenced to detect the mutation of LEF1 in 131 newly diagnosed adult patients with ALL. Quantitative PCR (qPCR) was performed to detect the expression of LEF1. Moreover, the correlations between mutations and expression of LEF1 with clinical characteristics were analyzed. The results showed that the frequency of LEF1 mutation in adult ALL was 3.1% (4/131) and all of them were point mutations located in exon 2 and 3; the median white blood cell count and median percentage of blasts at diagnosis were significantly higher in LEF1 high expression group than in low expression group (70.6 × 10⁹/L vs 26.2 × 10⁹/L)(P = 0.010); (81.0% vs 57.0%) (P = 0.014); in addition, the percentage of patients with Philadelphia chromosome positive and patients in high-risk group significantly increased in LEF1 high expression group compared with that in low expression group (66.7% vs 36.5%) (P = 0.038); (79.2% vs 56.2%) (P = 0.044). It is concluded that high expression of LEF1 may play an important role on development of adult ALL.


Subject(s)
Adult , Humans , Exons , Gene Expression Regulation, Leukemic , Lymphoid Enhancer-Binding Factor 1 , Genetics , Mutation , Precursor Cell Lymphoblastic Leukemia-Lymphoma , Genetics
17.
Acta Pharmaceutica Sinica ; (12): 965-970, 2013.
Article in Chinese | WPRIM | ID: wpr-259522

ABSTRACT

Myocardial ischemic preconditioning and postconditioning can reduce myocardial infarct size, improve myocardial contractility, protect coronary endothelial and myocardial cell ultrastructure, as well as reduce the incidence of arrhythmias. Clinical practice has confirmed the safety and efficacy of these two methods of myocardial protection. This paper reviewed about ischemic preconditioning and postconditioning protection mechanisms in myocardial ischemia reperfusion injury and clinical research literatures in recent years, to provide a theoretical basis for finding new treatment strategies on the prevention and treatment of ischemic cardiomyopathy.


Subject(s)
Animals , Humans , Ischemic Postconditioning , Methods , Ischemic Preconditioning, Myocardial , Methods , Myocardial Infarction , Therapeutics , Myocardial Ischemia , Therapeutics , Myocardial Reperfusion , Myocardial Reperfusion Injury , Receptors, G-Protein-Coupled , Signal Transduction
18.
Journal of Experimental Hematology ; (6): 1403-1408, 2013.
Article in Chinese | WPRIM | ID: wpr-265004

ABSTRACT

This study was aimed to investigate the characteristics and clinical significance of NOTCH1 mutation in adult T-cell acute lymphoblastic leukemia (T-ALL). Exon 26/N-terminal region of the heterodimerization domain (HD-N) , exon 27/ C-terminal region of the heterodimerization domain (HD-C) , exon 28 and exon 34/ proline-glutamic acid-serine-threonine (PEST) domain of the NOTCH1 gene were amplified, cloned and sequenced in 42 adult patients with T-ALL to identify the frequency, position and type of NOTCH1 mutation, their correlations with laboratorial and clinical parameters, as well as their relevant prognostic significance. The results showed that the frequency of NOTCH1 mutation in this cohort of adult patients was 66.7% (28/42); A total of 45 types of NOTCH1 mutations were identified in present study, most of them were in HD-N (48.9%, 22/45) and PEST (40.0%, 18/45) domains. Mutation in amino acid 1575 (L1575P) was the top one type of mutation in HD-N (25.0%, 7/28), and amino acid 2443 was the most common mutation position in PEST domain (14.3%, 4/28). In newly diagnosed patients, white blood cell (WBC) >10×10(9)/L and blasts in bone marrow > 50% were predominant in patients with NOTCH1 mutation (91.7% vs 54.5%, P = 0.021 and 95.8% vs 57.1%, P = 0.006 respectively). Immunophenotyping analysis indicated that patients with CD10 positive were more in NOTCH1 mutation group than wild-type group (51.9% vs 0%, P = 0.006), whereas patients with CD15 and CD11b positive were less in NOTCH1 mutation group (5.3% vs 42.9%, P = 0.047 and 0% vs 57.1%, P = 0.002 respectively). It is concluded that NOTCH1 mutation in adult T-ALL has different characteristics and clinical significance from pediatric patients, and the difference between Chinese patients and patients in Western countries is also indicated.


Subject(s)
Adolescent , Adult , Female , Humans , Male , Middle Aged , Young Adult , Base Sequence , Genotype , Mutation , Precursor T-Cell Lymphoblastic Leukemia-Lymphoma , Genetics , Receptor, Notch1 , Genetics
19.
Journal of Experimental Hematology ; (6): 289-295, 2013.
Article in Chinese | WPRIM | ID: wpr-332794

ABSTRACT

This study was aimed to investigate clinical and prognostic significances of 4 target antigens (CD19, CD20, CD22 and CD33) for antibody-based immunotherapy and to evaluate the applications of these antibody-based target therapy to adult acute lymphoblastic leukemia (ALL). The immunophenotype of 220 adult patients with ALL were analyzed by four-color flow Cytometry, and cytogenetic and molecular parameters were detected by conventional cytogenetics, fluorescence in situ hybridization, real-time quantitative PCR, nested PCR and DNA sequencing. The results showed that CD19 positive (CD19(+)) cases were more in female (46.4% vs. 23.4%, P = 0.006), elderly patients aged > 60 years (14.4% vs. 2.1%, P = 0.022), CD33(+) co-expression cases (47.8% vs. 12.0%, P = 0.001) and genetic high-risk group (55.8% vs. 20.8%, P = 0.002) compared with CD19 negative (CD19(-)) cases; CD20(+) cases had lower co-expression of CD13 than CD20(-) cases (31.6% vs.67.1%, P = 0.000) and no significant prognostic indications for CD20(+) was observed; CD22(+) cases had higher relapse rate at 12-month than CD22(-) cases (93.9% vs.57.1%, P = 0.041) in B-ALL patients; CD33(+) cases had higher incidence of Ph(+) than CD33(-) cases (43.5% vs.19.4%, P = 0.007) and significantly correlated with Ph(+) (r = 0.261, P = 0.006). It is concluded that elucidation of the characteristics of the target antigens (CD19, CD20, CD22, CD33) used for antibody-based immunotherapy will help hematologists making the correct decision whether and when to use these antibody-based target therapies.


Subject(s)
Adolescent , Adult , Aged , Child , Female , Humans , Male , Middle Aged , Young Adult , Antigens, CD19 , Allergy and Immunology , Antigens, CD20 , Allergy and Immunology , Immunophenotyping , Precursor Cell Lymphoblastic Leukemia-Lymphoma , Genetics , Allergy and Immunology , Sialic Acid Binding Ig-like Lectin 2 , Allergy and Immunology , Sialic Acid Binding Ig-like Lectin 3 , Allergy and Immunology
20.
Journal of Experimental Hematology ; (6): 371-376, 2013.
Article in Chinese | WPRIM | ID: wpr-332777

ABSTRACT

Mantle cell lymphoma (MCL) is a kind of mature B-cell neoplasms with significantly poor prognosis and is usually misdiagnosed. With the development of flow cytometry and cytogenetic technique, most patients were at leukemic phase when diagnosed. This study was purposed to investigate the immunophenotypes of MCL, the immunophenotype information of 22 leukemic MCL patients was analyzed retrospectively. All the patients were conformed t(11;14) translocation by fluorescence in situ hybridization. Immunophenotypes were detected by a four-color flow cytometry including CD3, CD4, CD5, CD8, CD10, CD19, CD20, CD22, CD23, CD25, CD38, CD103, CD148, CD200, FMC7, ZAP-70, κ, λ. The results showed that CD19, CD5, CD20 and monoclonal sIg expressed in all 22 patients with CD20 high expression; CD22 expressed weakly in 17 patients; CD23 expressed in 6 patients including 2 cases highly expressed; FMC7 expressed in 12 patients. 5 patients were 4-point score and 17 patients had a score less than 4 according to CLL scoring system. CD148 and CD200 were detected in 18 patients, in which CD200 expressed negatively in 11 patients, CD200 expressed weakly in 7 patients with median fluorescence intensity (MFI) 25.8 (6.6 - 254.26); CD148 expressed positively in all 18 patients with median MFI: 337 (73.4 - 1341.9). It is concluded that the atypical immunophenotype is common in leukemia MCL, thereby the diagnosis of MCL needs comprehensively analyze with morphocytology, immunophenotype and cytogenetic, CD200 and CD148 as new bio-markers can differentiate MCL from chronic B cell lymphoproliferative disease.


Subject(s)
Adult , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Antigens, CD , Metabolism , Immunophenotyping , Karyotyping , Lymphoma, Mantle-Cell , Genetics , Allergy and Immunology , Metabolism , Receptor-Like Protein Tyrosine Phosphatases, Class 3 , Metabolism , Retrospective Studies
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