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1.
J Hematol Oncol ; 16(1): 75, 2023 07 18.
Artigo em Inglês | MEDLINE | ID: mdl-37464375

RESUMO

The mRNA-based therapeutics have become the hot spot of biopharmaceutical industries in recent years. The landscape of this area is expanding from infectious disease to cancer, which needs to be summarized to provide data supports for industries and research institutions. Based on the Trialtrove database, a total of 108 clinical trials from 1999 to 2021 were retrospectively analyzed. We have demonstrated that the clinical development of mRNA therapies against solid tumors is still at an early stage. There are evolutions in delivery systems from the dendritic cell to the lipid-based platform and in encoding strategies from the fixed tumor antigens to the personalized neoantigens. The adjuvant or maintenance therapy and the combination treatment with checkpoint inhibitors are becoming the major clinical development orientation.


Assuntos
Vacinas Anticâncer , Neoplasias , Humanos , RNA Mensageiro/genética , Estudos Retrospectivos , Neoplasias/genética , Neoplasias/terapia , Antígenos de Neoplasias/genética , Imunoterapia
3.
Chin Med Sci J ; 37(3): 275-281, 2022 Sep 30.
Artigo em Inglês | MEDLINE | ID: mdl-36321183

RESUMO

Myocardial perfusion imaging (MPI) is valuable for the diagnosis, prognosis, and management of coronary artery disease (CAD). The most commonly used pharmacologic stress agents at present are vasodilators and adrenergic agents. However, these agents have contraindications and may cause adverse effects in some patients. Thus, other stress agents feasible for more patients are required. Higenamine (HG) is a ß-adrenergic receptor agonist currently approved for clinical trials as a stress agent for myocardial infarction. It also has a promising value in MPI for the detection of CAD in preclinical and clinical studies. This review summarizes the application of HG on MPI, including its mechanism of action, stress protocol, efficacy, and safety.


Assuntos
Alcaloides , Doença da Artéria Coronariana , Imagem de Perfusão do Miocárdio , Tetra-Hidroisoquinolinas , Humanos , Imagem de Perfusão do Miocárdio/métodos , Angiografia Coronária/métodos
4.
Acta Pharmacol Sin ; 43(10): 2542-2549, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-35354962

RESUMO

Upon chronic stress, ß-adrenergic receptor activation induces cardiac fibrosis and leads to heart failure. The small molecule compound IMM-H007 has demonstrated protective effects in cardiovascular diseases via activation of AMP-activated protein kinase (AMPK). This study aimed to investigate IMM-H007 effects on cardiac fibrosis induced by ß-adrenergic receptor activation. Because adenosine analogs also exert AMPK-independent effects, we assessed AMPK-dependent and -independent IMM-H007 effects in murine models of cardiac fibrosis. Continual subcutaneous injection of isoprenaline for 7 days caused cardiac fibrosis and cardiac dysfunction in mice in vivo. IMM-H007 attenuated isoprenaline-induced cardiac fibrosis, diastolic dysfunction, α-smooth muscle actin expression, and collagen I deposition in both wild-type and AMPKα2-/- mice. Moreover, IMM-H007 inhibited transforming growth factor ß1 (TGFß1) expression in wild-type, but not AMPKα2-/- mice. By contrast, IMM-H007 inhibited Smad2/3 signaling downstream of TGFß1 in both wild-type and AMPKα2-/- mice. Surface plasmon resonance and molecular docking experiments showed that IMM-H007 directly interacts with TGFß1, inhibits its binding to TGFß type II receptors, and downregulates the Smad2/3 signaling pathway downstream of TGFß1. These findings suggest that IMM-H007 inhibits isoprenaline-induced cardiac fibrosis via both AMPKα2-dependent and -independent mechanisms. IMM-H007 may be useful as a novel TGFß1 antagonist.


Assuntos
Proteínas Quinases Ativadas por AMP , Fator de Crescimento Transformador beta1 , Proteínas Quinases Ativadas por AMP/metabolismo , Actinas/metabolismo , Adenosina/análogos & derivados , Adenosina/farmacologia , Animais , Colágeno , Fibrose , Isoproterenol/toxicidade , Camundongos , Simulação de Acoplamento Molecular , Receptores Adrenérgicos beta , Transdução de Sinais , Fator de Crescimento Transformador beta1/metabolismo
5.
Oncol Lett ; 22(5): 788, 2021 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-34584566

RESUMO

The present study aimed to compare the differences between the humanized CD19 chimeric antigen receptor (CAR)-T cell therapy and the murine CD19 CAR-T therapy in recurrent B-acute lymphoblastic leukemia (B-ALL). A 62-year-old male patient who had B-ALL (BCR/ABL+) for 4 years was diagnosed with relapsed central nervous system leukemia (CNSL). After several courses of high dose methotrexate combined with intrathecal chemotherapy, the patient received murine CD19 CAR-T therapy and achieved complete response (CR). The patient was diagnosed with relapsed CNSL again 15 months after his murine CD19 CAR-T therapy, and was therefore enrolled in the humanized CD19 CAR-T therapy. Subsequently, the present study aimed to compare murine and humanized CD19 CAR-T cells against Nalm-6 cells in vitro and in mice. The patient initially achieved CR from his murine CD19 CAR-T therapy with Grade 1 cytokine-release syndrome (CRS) and Grade 1 CAR-T cell-related encephalopathy syndrome (CRES). The patient then achieved CR again from his humanized CD19 CAR-T therapy with Grade 1 CRS and Grade 2 CRES. Peak levels of CD19 CAR-T cells were higher in humanized CD19 CAR-T therapy than those in murine CD19 CAR-T therapy 7 days after infusion in the peripheral blood, in bone marrow and in cerebrospinal fluid (CSF). The cytokine levels were higher in humanized CD19 CAR-T therapy than those in murine CD19 CAR-T therapy in the peripheral blood and in CSF. The cytotoxicity to Nalm-6 cells was higher in humanized CD19 CAR-T cells than that in murine CD19 CAR-T cells in vitro. In Nalm-6 BALB/c mice, the median survival time of mice in the murine CD19 CAR-T group was 35 days, while it was 43 days in the humanized CD19 CAR-T group. In conclusion, humanized CD19 CAR-T cell therapy had a better curative effect than that of murine CD19 CAR-T therapy, and may be used as a salvage treatment for recurrent B-ALL after treatment with murine CD19 CAR-T therapy.

6.
Aging (Albany NY) ; 13(10): 14342-14354, 2021 05 19.
Artigo em Inglês | MEDLINE | ID: mdl-34016788

RESUMO

There are few studies on the mechanism of pituitary adenoma (PA) destroying bone. The current study aimed to investigate the role of MEG8/miR-454-3p/TNF-α in bone-invasive pituitary adenomas (BIPAs). In this study, we report that lncRNA MEG8 and TNF-α are upregulated in BIPA tissues while miR-454-3p is downregulated, which is associated with poor progression-free survival (PFS). Functional assays revealed the role of up-regulated MEG8 and down-regulated miR-454-3p in promoting bone destruction. Mechanistically, MEG8 promotes TNF-α expression by sponging miR-454-3p, which ultimately leads to the occurrence of bone destruction. The mechanism is confirmed in vivo and in vitro. Therefore, our data illustrated a new regulatory mechanism of MEG8/miR-454-3p/TNF-α in BIPAs. It may provide a useful strategy for diagnosis and treatment for BIPA patients.


Assuntos
Adenoma/genética , Adenoma/patologia , Osso e Ossos/patologia , MicroRNAs/metabolismo , Neoplasias Hipofisárias/genética , Neoplasias Hipofisárias/patologia , RNA Longo não Codificante/metabolismo , Fator de Necrose Tumoral alfa/metabolismo , Adulto , Idoso , Animais , Sequência de Bases , Linhagem Celular Tumoral , Progressão da Doença , Regulação para Baixo/genética , Feminino , Regulação Neoplásica da Expressão Gênica , Humanos , Masculino , Camundongos , Camundongos Endogâmicos BALB C , Camundongos Nus , MicroRNAs/genética , Pessoa de Meia-Idade , Modelos Biológicos , Invasividade Neoplásica , Prognóstico , Células RAW 264.7 , RNA Longo não Codificante/genética , Regulação para Cima/genética
7.
Int J Neurosci ; 131(2): 199-205, 2021 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-32098537

RESUMO

Pituitary metastasis(PM) from renal cell carcinoma(RCC) is rare, and is easy to be misdiagnosed. Here, we present a case of pituitary metastasis from clear-cell renal cell carcinoma(ccRCC) which was difficult to distinguish from other sellar region tumors. In addition, we systematically review the literature to find the characteristics of different tumors of the sellar region. It provides a new idea for the diagnosis of sellar region tumors in the clinic.


Assuntos
Carcinoma de Células Renais/diagnóstico , Neoplasias Renais/diagnóstico , Neoplasias Hipofisárias/diagnóstico , Carcinoma de Células Renais/patologia , Humanos , Neoplasias Renais/patologia , Masculino , Pessoa de Meia-Idade , Neoplasias Hipofisárias/patologia , Neoplasias Hipofisárias/secundário
8.
Front Pharmacol ; 10: 1040, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31607907

RESUMO

Background: Metabolic syndrome (MS) is one of the major causes of coronary artery diseases (CAD). Gut microbiome diversity and its natural fermentation products are not only correlated with MS and CAD, but their correlations also appear to be stronger than the associations with traditional risk factors. Therefore, the aim of this study was to provide a new potential pathway for the natural fermentation product butyrate to improve MS and to examine whether it is associated with serum metabolic profiles and gut flora composition. Methods: C57BL/6J mice fed a high-fat diet (HFD) were treated with 400 mg/kg of sodium butyrate for 16 weeks. Blood and fecal samples were collected, and the metabolite concentrations and 16s rRNA were measured with liquid chromatography-MS and Illumina platform, respectively. The plasma differential metabolites and gut microbiome composition were analyzed with XCMS online and QIIME 2, respectively. Results: Gut microbiome-derived butyrate reduced glucose intolerance and insulin resistance, resisting HFD-induced increase in the relative abundance of f_Lachnospiraceae, f_Rikenellaceae, and f_Paraprevotellaceae. Meanwhile, sodium butyrate increased the levels of α-linolenate, all-trans-retinal, resolvin E1, and leukotriene in the plasma, and the differential pathways showed enrichment in mainly resolvin E biosynthesis, histidine degradation, lipoxin biosynthesis, and leukotriene biosynthesis. Moreover, sodium butyrate increased the levels of phosphorylated-adenosine 5'-monophosphate-activated protein kinase (p-AMPK) and facilitated glucose transporter member 4 (GLUT4) in the adipose tissue. Conclusion: Butyrate can induce AMPK activation and GLUT4 expression in the adipose tissue, improving cardiovascular disease (CVD)-related metabolic disorder, resisting HFD-induced gut microbiome dysbiosis, and promoting resolvin E1 and lipoxin biosynthesis. Oral supplement of the natural fermentation product butyrate can be a potential strategy for preventing CVD.

9.
Oncol Lett ; 18(5): 4415-4420, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31611950

RESUMO

Anti-CD19 chimeric antigen receptor T cell (CAR-T) therapy has changed the typical outcomes of relapsed/refractory B-cell leukemia and lymphoma. However, treatment effectiveness for patients with relapsed/refractory B-cell non-Hodgkin lymphoma has been less satisfactory compared with patients with B-cell acute lymphoblastic leukemia. The present study described a case of refractory follicular lymphoma. A high expression of programmed cell death 1 (PD-1) was measured on CD3+ T cells (80.90%) in peripheral blood samples obtained from the patient enrolled in this study, indicating that treatment with autologous CAR-T 19 cell therapy may not be successful. Therefore, a therapy regimen consisting of CAR-T 19 cells in combination with a reduced dose of nivolumab (1.5 mg/kg) for PD-1 blockade was used. A low dose of PD-1 blockade therapy was used to reduce the adverse effects associated with the combination of a PD-1 inhibitor and CAR-T 19 cells. This salvage therapy resulted in remission that lasted for >10 months.

10.
Oncol Lett ; 18(5): 4651-4658, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31611974

RESUMO

The aim of the present study was to investigate the role and potential regulatory mechanisms of cyclin B1 (CCNB1) in the proliferation, apoptosis and epithelial-to-mesenchymal transition (EMT) in pituitary adenomas. A total of 24 specimens were included in the present study. The expression levels of CCNB1 protein in two normal pituitary and 22 pituitary adenoma tissues were determined by western blotting. CCNB1 was knocked-down by lentiviral-mediated infection of short hairpin RNA (shRNA) in GH3 and MMQ cell lines. The proliferation, cell cycle and apoptosis of GH3 and MMQ cell lines were detected using a Cell Counting Kit-8 and flow cytometer. Reverse transcription-quantitative PCR was utilized to detect the expression level of CCNB1 gene and EMT markers. In the present study, resveratrol (RES) was used as an inhibitor of CCNB1. The protein expression level of CCNB1 in pituitary adenomas was higher than that in normal pituitary tissue, as assessed by western blot analysis. In addition, the expression level of CCNB1 in invasive pituitary adenomas was higher when comparing invasive pituitary adenomas and non-invasive pituitary adenomas. Knockdown of CCNB1 resulted in significant decreases in cell viability and proliferation, arrested cell cycle at the G2/M phase and increased apoptosis. In addition, knockdown of CCNB1 significantly decreased the expression levels of the mesothelial cell marker N-cadherin (P<0.001), but significantly increased the expression levels of the epithelial cell markers E-cadherin (P<0.01) and p120-catenin (P<0.001). Further analyses identified that RES inhibited the expression level of CCNB1, and RES treatment exhibited a similar effect as CCNB1 shRNA infection. The present study suggested that suppressing the expression level of CCNB1 could regulate the proliferation and apoptosis of pituitary tumor cells and alter the expression level of various EMT markers. In addition, RES treatment could be used as an inhibitor of CCNB1. The present study also identified the molecular mechanisms underlying CCNB1 role in EMT.

11.
Oncol Rep ; 41(6): 3455-3463, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-30942469

RESUMO

CD19 chimeric antigen receptor (CAR) T cell therapy has changed the outcomes of relapsed/refractory B­cell leukemia and lymphoma. However, its efficacy in patients with relapsed/refractory non­Hodgkin lymphoma (NHL) has been less impressive compared with that in patients with acute lymphoid leukemia. Furthermore, immune checkpoints have a critical role in the immune system. Several clinical trials have confirmed the dramatic effects of programmed death­1/programmed death­ligand 1 (PD­1/PD­L1) inhibitors in numerous malignancies, but the immune­associated adverse events of PD­1/PD­L1 inhibitors may occur in a number of systems. The aim of the present study was to investigate the combination of CD19 CAR­T cells with a reduced dose of PD­1 inhibitor. This method is expected to overcome the side-effects of PD­1 inhibitors, while maintaining therapeutic efficacy. The findings demonstrated that a reduced dose of PD­1 inhibitor did not affect the transfection rate, proliferation rate or cytokine secretion of CD19 CAR­T cells. An interesting finding of the present study was that the number of PD­1­positive cells CAR­T cells, measured by flow cytometry, declined when they were cultured in vitro, but returned to high levels with gradual prolongation of the co­culture time of CD19 CAR­T cells with lymphoma cells; however, there was no change in the mRNA expression of T cells and CAR­T cells during this process. This phenomenon may be one of the reasons why the curative effect of CAR­T cells on B­cell lymphoma is unsatisfactory compared with B­cell leukemia. The synergistic effect of a reduced­dose PD­1 inhibitor combined with CD19 CAR­T cells from T cells highly expressing PD­1 was confirmed in a mouse trial. Mice in the combined treatment group achieved the longest survival time. In this group, the proportion of CAR­T cells and the level of interleukin­6 were higher compared with those in the CAR­T cell group. In conclusion, a reduced dose of a PD­1 inhibitor combined with CD19 CAR­T cells appears to be a promising treatment option for relapsed/refractory B­NHL exhibiting high PD­1 expression by T cells. This method may achieve good clinical efficacy while reducing the side-effects of PD­1 inhibitors.


Assuntos
Linfoma/terapia , Nivolumabe/administração & dosagem , Leucemia-Linfoma Linfoblástico de Células Precursoras/tratamento farmacológico , Receptor de Morte Celular Programada 1/antagonistas & inibidores , Adulto , Antígenos CD19/genética , Antígeno B7-H1/antagonistas & inibidores , Antígeno B7-H1/genética , Antígeno B7-H1/imunologia , Proliferação de Células/efeitos dos fármacos , Feminino , Citometria de Fluxo , Regulação Neoplásica da Expressão Gênica/genética , Regulação Neoplásica da Expressão Gênica/imunologia , Humanos , Imunoterapia Adotiva/métodos , Linfoma/genética , Linfoma/imunologia , Linfoma/patologia , Masculino , Pessoa de Meia-Idade , Leucemia-Linfoma Linfoblástico de Células Precursoras/genética , Leucemia-Linfoma Linfoblástico de Células Precursoras/imunologia , Leucemia-Linfoma Linfoblástico de Células Precursoras/patologia , Receptor de Morte Celular Programada 1/genética , Receptores de Antígenos de Linfócitos T/genética , Receptores de Antígenos de Linfócitos T/imunologia , Linfócitos T/efeitos dos fármacos , Linfócitos T/imunologia , Ensaios Antitumorais Modelo de Xenoenxerto
12.
Eur J Pharmacol ; 852: 167-178, 2019 Jun 05.
Artigo em Inglês | MEDLINE | ID: mdl-30826323

RESUMO

2',3',5'-Tri-O-acetyl-N6-(3-hydroxyphenyl) adenosine, a cordycepin derivative that is also known as IMM-H007, is a new adenosine analogue and anti-hyperlipidaemic drug that was developed in our laboratory. It has been previously reported to alleviate atherosclerosis by regulating blood lipid levels. The purpose of the current study was to determine the protective effects of IMM-H007 on endothelial function and vascular inflammation independent of its lipid-lowering effect. Vascular reactivity was determined using a pressure myography system-120CP. Vascular inflammation was assessed to quantify leukocyte-endothelial adhesion in the mesenteric microcirculation. Relative levels of endothelial nitric oxide synthase(eNOS)activity were detected using a fluorescent nitric oxide(NO)probe, and NO production was detected using Griess reagent. Atherosclerotic plaques were evaluated with en face and cross section analyses. Here, IMM-H007 improved endothelial dysfunction through a mechanism independent of its lipid-lowering effect. IMM-H007 suppressed vascular inflammation both in the initial stage and during the progression of atherosclerosis. The in vitro study using human umbilical vein endothelial cells (HUVECs) revealed that IMM-H007 increased eNOS activity and nitric oxide production, which were closely related to the increased phosphorylation of AMP-activated protein kinase (AMPK), protein kinase B (Akt) and eNOS induced by IMM-H007. Furthermore, inhibition of AMPK by Compound C completely blocked IMM-H007-induced Akt and eNOS activation. IMM-H007 suppressed the formation of atherosclerotic lesions in ApoE-/- mice. We have presented evidence that IMM-H007 represents a potential therapeutic strategy to improve endothelial function and attenuate inflammation, and it is a promising, novel therapeutic approach to treating atherosclerosis.


Assuntos
Proteínas Quinases Ativadas por AMP/metabolismo , Adenosina/análogos & derivados , Vasos Sanguíneos/efeitos dos fármacos , Vasos Sanguíneos/fisiopatologia , Dieta Hiperlipídica/efeitos adversos , Células Endoteliais da Veia Umbilical Humana/efeitos dos fármacos , Óxido Nítrico Sintase Tipo III/metabolismo , Adenosina/farmacologia , Animais , Aterosclerose/prevenção & controle , Vasos Sanguíneos/metabolismo , Vasos Sanguíneos/patologia , Ativação Enzimática/efeitos dos fármacos , Células Endoteliais da Veia Umbilical Humana/metabolismo , Células Endoteliais da Veia Umbilical Humana/patologia , Humanos , Inflamação/metabolismo , Inflamação/patologia , Inflamação/fisiopatologia , Camundongos , Camundongos Knockout para ApoE , Óxido Nítrico/biossíntese , Fosforilação/efeitos dos fármacos , Proteínas Proto-Oncogênicas c-akt/metabolismo , Fator de Necrose Tumoral alfa/farmacologia
13.
J Asian Nat Prod Res ; 21(9): 916-927, 2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-30187782

RESUMO

To compare the stimulation and binding characteristics of adenosine analogs including AMP, IMM-H007, and M1, to AMPK, and to explore the potential mechanism underlying the regulation effect of adenosine analogs on AMPK activity, [γ-32P]ATP assay, circular dichroism experiments and molecular docking test were performed. We found that the interactions with Thr86, Thr88, and His150 in site 1 are probably the reason why the affinities of IMM-H007, M1, and adenosine are comparable but their allosteric activation on AMPK varies greatly, partly interpreting the mechanism of AMPK activity regulated by adenosine analogs.


Assuntos
Proteínas Quinases Ativadas por AMP/metabolismo , Adenosina/análogos & derivados , Adenosina/farmacologia , Adenosina/química , Animais , Sítios de Ligação , Dicroísmo Circular , Regulação da Expressão Gênica/efeitos dos fármacos , Modelos Moleculares , Simulação de Acoplamento Molecular , Estrutura Molecular , Ligação Proteica , Ratos , Ratos Sprague-Dawley
14.
Mol Cytogenet ; 11: 10, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29416565

RESUMO

BACKGROUND: Balanced translocations may cause the loss of genetic material at the breakpoints and may result in failure of spermatogenesis. However, carriers of reciprocal translocation may naturally conceive. Genetic counseling of male carriers of translocations remains challenging. This study explores the clinical features of carriers of chromosome 5 translocations, enabling informed genetic counseling of these patients. RESULTS: Of 82 translocation carriers, 9 (11%) were carriers of a chromosome 5 translocation. One case had azoospermia, while three cases had experienced recurrent spontaneous abortions, two cases had each experienced stillbirth, and three cases produced a phenotypically normal child confirmed by amniocentesis. A literature review identified 106 patients who carried chromosome 5 translocations. The most common chromosome 5 translocation was t(4,5), observed in 13 patients. Breakpoint at 5p15 was observed in 11 patients. All breakpoints at chromosome 5 were associated with gestational infertility. CONCLUSION: In genetic counseling, physicians should consider chromosome 5 and its breakpoints. Carriers of chromosome 5 translocations may continue with natural conception or use assisted reproductive technologies, such as preimplantation genetic diagnosis.

15.
Yao Xue Xue Bao ; 52(1): 106-12, 2017 01.
Artigo em Chinês | MEDLINE | ID: mdl-29911800

RESUMO

This study is designed to investigate the protective effect and mechanism of cordycepin on non- alcoholic fatty liver in ob/ob mice. Twelve-week-old male ob/ob mice were divided into 5 groups according to their body weight and blood glucose, and C57BL/6J mice were used in the control group. The animals were orally administered with cordycepin for 7 weeks. Body weight and food intake were measured once a week. Blood were collected from ophthalmic venous and biochemical indexes were determined at the 2nd and 4th week. Insulin tolerance test was performed at the 5th week. After 7 weeks of administration, liver tissues were collected to determine the contents of triglycerides and total cholesterol, and pro-inflammatory cytokines. Liver histology was performed by hematoxylin-eosin and oil-red O staining. Total RNA were extracted from liver tissues and the levels of lipid metabolism-related and inflammation-related genes were detected by real time PCR. Cordycepin effectively reduced the blood lipids level and improved liver function. Nevertheless, it did not improve insulin resistance in ob/ob mice. Cordycepin significantly reduced the contents of triglycerides and cholesterol, and the levels of pro-inflammatory cytokines in liver tissues. Moreover, cordycepin remarkably suppressed the expression of genes related to lipids synthesis and inflammation. These results indicate that cordycepin may improve non-alcoholic fatty liver in ob/ob mice, and the underlying mechanism may be associated with decreased expression of genes related to lipids synthesis and inflammation.


Assuntos
Desoxiadenosinas/farmacologia , Lipogênese , Hepatopatia Gordurosa não Alcoólica/tratamento farmacológico , Administração Oral , Animais , Glicemia , Peso Corporal , Inflamação/genética , Resistência à Insulina , Metabolismo dos Lipídeos/genética , Lipídeos/sangue , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Obesos , Triglicerídeos/sangue
16.
Yao Xue Xue Bao ; 51(10): 1564-71, 2016 10.
Artigo em Chinês | MEDLINE | ID: mdl-29932601

RESUMO

The research aimed to investigate the suppression effect of Mai Shu which contains hawthorn, hippophae, medlar, phytosterols(ß-sitosterol, stigmasterol and campesterol), ß-glucan and lycopeneon formation of atherosclerotic plaque in apolipoprotein E knock-out (ApoE-/-) mice. Liquid chromatography-ultravioletmass spectrometry(LC-UV-MC) methods were used to analyze the main chemical composition of Mai Shu. Atherosclerotic mice models were established by high-fat diet. The mice were administrated with Mai Shu (1, 2, 4 g·kg-1·d-1) or other contrast materials by intragastric route for 10 weeks continuously. At the end of administration, the blood of mice was collected for tests of the serum total cholesterol(TC), total triglyceride(TG) and high density lipoprotein cholesterol(HDL-C) level. Atherosclerotic lesions in aorta and aortic root were assessed by calculating the relative area of lesions(oil red O stained). Intravital fluorescence microscopic system was used to evaluate the leukocyte-endothelial adhesion in mesenteric artery of mice by detecting the rolling velocity of white blood cells(WBC). Collagenous fibers and macrophages in lesions were detected by sirius red staining and immunological histological chemistry to evaluate the atherosclerotic plaque stability. Results showed that Mai Shu contains various flavonoids(9.5%), phytosterols(23.8%) and polysaccharides(8.9%). The serum lipid level of model animals was significantly higher than the control animals. Serum TC level was decreased by Mai Shu (4 g·kg-1, P < 0.001) compared to the untreated model. Serum TG level was reduced by Mai Shu (1, 2, 4 g·kg-1) compared to model(P < 0.01). Area of atherosclerotic lesions in aorta and aortic root was decreased in Mai Shu group (aorta: 1 g·kg-1, P < 0.05; 2 g·kg-1, P < 0.01; 4 g·kg-1, P < 0.001; aortic root: 2, 4 g·kg-1, P < 0.01). Rolling velocity of white blood cells of Mai Shu (4 g·kg-1, P < 0.001) group was increased over the untreated model. Collagenous fibers in lesions were observationally increased by Mai Shu (1, 2 g·kg-1) and macrophages were decreased (2, 4 g·kg-1) compared to model. These results demonstrate that Mai Shu can obviously decrease the serum lipid levels and the risk of leukocyte-endothelial adhesion in ApoE-/- mice. The effect of Mai Shu may be associated with the decrease of macrophages in plaque.


Assuntos
Aterosclerose/tratamento farmacológico , Medicamentos de Ervas Chinesas/farmacologia , Placa Aterosclerótica/tratamento farmacológico , Animais , Aorta/patologia , Colesterol/sangue , Dieta Hiperlipídica , Modelos Animais de Doenças , Macrófagos/citologia , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Knockout para ApoE , Fitosteróis/farmacologia , Triglicerídeos/sangue
17.
Artigo em Chinês | MEDLINE | ID: mdl-25518600

RESUMO

The whole blood sample from a patient with imported falciparum malaria was tested by microscopic examination and fluorescence quantitative PCR. Microscopic examination results showed that Plasmodium falciparum parasites were found in the thick and thin blood films with a low parasite density of 240 parasite/microl of blood. The specific DNA fragment of P. falciparum was amplified by fluorescence quantitative PCR, and this case was further confirmed as P. falciparum infection.


Assuntos
Malária Falciparum/diagnóstico , Plasmodium falciparum/genética , Fluorescência , Humanos , Microscopia , Reação em Cadeia da Polimerase
18.
Iran J Reprod Med ; 12(9): 609-16, 2014 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-25469133

RESUMO

BACKGROUND: Clinical reproductive centers produce large amounts of surplus poor-quality embryos annually, how to maximize the use of these embryos, and which of them have the potential to develop into blastocyst stage and influencing factors were lack of systematic research. OBJECTIVE: To investigate the fate of surplus poor-quality embryos which were cultured to obtain blastocyst, determine the factors which may influence the blastulation, and discuss their application in predicting of the pregnancy outcomes. MATERIALS AND METHODS: Day 3 (D3) after embryo transfer and freezing, surplus poor-quality embryos from IVF/ICSI cycles were cultured to blastocyst by the sequential method, then the blastulation outcomes were observed. Focusing on the blastulation rate of those embryos with different number cells and different embryonic grade; and last the relationship between the pregnancy outcomes of remained poor-quality embryos with successful blastulation or failed blastulation groups were studied. RESULTS: Of 127 patients with 569 poor-quality in vitro cultured embryos, there were formation of 248 blastocysts from 91 patients (43.59%), which lead to development of 138 high-quality blastocysts (24.25%). With the increase in cells number of D 3 blastomeres, the blastulation rate gradually increased, that, 7-cell blastomeres blastulation rate was the highest (70.59%), and 8-cell blastomeres is a little below (70.37%); while the embryonic levels and blastulation rate did not show this positive relationship. The clinical pregnancy rate and implantation rate of those who had successful blastulation (67.03% and 42.39%) were higher than of those who failed to develop to blastocyst (p=0.039). CONCLUSION: Day 3 poor-quality embryos with successful blastulation or with failed blastulation had predictive value on pregnancy outcomes. For embryo transfer 7-8 cells grade III-IV embryo is better than 4-5 cells grade I-II embryo, in case of lack good-quality embryos.

20.
Yao Xue Xue Bao ; 49(5): 679-85, 2014 May.
Artigo em Inglês | MEDLINE | ID: mdl-25151741

RESUMO

2', 3', 5'-Tri-O-acetyl-N6-(3-hydroxylaniline)adenosine (WS070117) is a derivative compound of natural product cordycepin. It has significant lipids regulating activity and low toxicity which has been proved by in vitro and in vivo experiments. In this study, 1H NMR-based metabolomics was used to investigate the dose-related effects of WS070117 on hyperlipidemia of high-fat-fed hamsters. The hyperlipidemic hamsters were administrated with six different doses of WS070117, including 3, 12, 50, 100, 200 and 400 mg x kg(-1) x d(-1). 1H NMR spectra of hamster serum were visually and statistically analyzed using two multivariate analyses: principal component analysis (PCA) and orthogonal partial least squares-discriminant analysis (OPLS-DA). As a result, WS070117-treated groups showed dose-related regulation of metabolites associated with lipid metabolism, choline metabolism and glucose metabolism. The dose of 3 mg x kg(-1) x d(-1) of WS070117 only exhibited a little lipids regulating activity. However, the doses of 12 and 50 mg x kg(-1) x d(-1) of WS070117 both regulated the contents of metabolites to reverse significantly toward normal levels. When the dose of WS070117 reached 100 mg x kg(-1) x d(-1), it was more effective than positive control drugs. The work suggested that NMR-based metabolomics might be a valuable approach to evaluate dose-related effects of lipids regulating compounds.


Assuntos
Adenosina/análogos & derivados , Metabolismo dos Lipídeos/efeitos dos fármacos , Metabolômica , Adenosina/farmacologia , Animais , Cricetinae , Hiperlipidemias/metabolismo , Análise dos Mínimos Quadrados , Espectroscopia de Ressonância Magnética , Análise Multivariada , Análise de Componente Principal
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