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1.
Zhonghua Bing Li Xue Za Zhi ; 49(1): 57-61, 2020 Jan 08.
Artigo em Chinês | MEDLINE | ID: mdl-31914536

RESUMO

Objective: To investigate the expression and clinicopathological significance of high mobility group box protein B1 (HMGB1) protein in breast cancer. Methods: The expression of HMGB1 protein in 26 normal breast tissues and 417 invasive breast cancer tissues diagnosed at Dongyang People's Hospital, Zhejiang Province from 2016 to 2018 were detected by immunohistochemical EnVision method. The relationship between nuclear and cytoplasmic HMGB1 protein expression and clinicopathologic features of breast cancer patients were analyzed. Results: The nuclear and cytoplasmic expression of HMGB1 protein was 80.8% (337/417) and 16.8% (70/417) respectively in breast cancer, and was 46.2%(12/26) and 0(0/26) respectively in normal breast tissue. Both nuclear and cytoplasmic expression of HMGB1 protein in breast cancer were significantly higher than normal breast tissue (P<0.001, P=0.046, respectively). The nuclear expression of HMGB1 protein was also higher in high grade, estrogen receptor (ER) negative, progesterone receptor (PR) negative (P=0.006, P=0.004, P<0.001, respectively); whereas the cytoplasmic expression of HMGB1 protein was also higher in high grade, estrogen receptor (ER) negative, progesterone receptor (PR) negative (P<0.001 in all) breast cancers. Multivariate logistic regression model showed that nuclear HMGB1 expression correlated with histologic grade (OR=2.188, 95%CI=1.078-4.443, P=0.030), while cytoplasmic HMGB1 expression correlated with histologic grade (OR=3.031, 95%CI=1.600-5.742, P=0.001), ER (OR=0.129, 95%CI=0.034-0.494, P=0.003) and TNM staging (OR=3.820, 95%CI=1.042-14.001, P=0.043). Multivariate analysis of Cox proportional hazard model showed that nuclear HMGB1 expression was an independent risk factor for the overall survival of breast cancer patients (HR=0.366, 95%CI=0.138-0.972, P=0.044). Conclusion: Nuclear and cytoplasmic HMGB1 proteins are related to multiple poor prognostic factors in breast cancer, and may be a potential biomarker for breast cancer treatment.


Assuntos
Neoplasias da Mama , Proteína HMGB1/metabolismo , Biomarcadores Tumorais , Humanos , Prognóstico , Receptores Estrogênicos
2.
Anim Genet ; 38(3): 211-7, 2007 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-17433016

RESUMO

In turkeys, spontaneous cardiomyopathy or round heart (RH) disease is characterised by dilated ventricles and cardiac muscle hypertrophy. Although the aetiology of RH is still unknown, the disease can have a significant economic impact on turkey producers. In an initial attempt to identify genomic regions associated with RH, we utilised the chicken genome sequence to target short DNA sequences (sequence-characterised amplified regions, SCARs) identified in previous studies that had significant differences in frequency distribution between RH+ and RH- turkeys. SCARs were comparatively aligned with the chicken whole-genome sequence to identify flanking regions for primer design. Primers from 32 alignments were tested and target sequences were successfully amplified for 30 loci (94%). Comparative re-sequencing identified putative SNPs in 20 of the 30 loci (67%). Genetically informative SNPs at 16 loci were genotyped in the UMN/NTBF turkey mapping population. As a result of this study, 34 markers were placed on the turkey/chicken comparative map and 15 markers were added to the turkey genetic linkage map. The position of these markers relative to cardiac-related genes is presented. In addition, analysis of genotypes at 109 microsatellite loci presumed to flank the SCAR sequences in the turkey genome identified four significant associations with RH.


Assuntos
Cardiomiopatias/veterinária , Marcadores Genéticos/genética , Doenças das Aves Domésticas/genética , Perus , Animais , Sequência de Bases , Cardiomiopatias/genética , Primers do DNA , Dados de Sequência Molecular , Polimorfismo de Nucleotídeo Único/genética , Mapeamento de Híbridos Radioativos , Análise de Sequência de DNA
3.
J Immunol Methods ; 202(2): 113-21, 1997 Mar 28.
Artigo em Inglês | MEDLINE | ID: mdl-9107300

RESUMO

We report a procedure for optimisation of Western blotting using protein G-horseradish peroxidase (protein G-HRP) which avoids the false positive reactions often caused by second antibodies and increases the detection of autoantibodies by protein G conjugate. A number of modifications were investigated. Higher concentrations of serum and protein G-HRP at 1:5 to 1:10 and 1:100, respectively, increased the detection to the same order as that obtained with second antibody systems and gold staining with silver enhancement. The role of various detergents in the procedure was established. 3-[(3-Cholamidopropyl)-dimethylammonio]-1-propanesulfonate (CHAPS) in incubation with protein G-HRP increased the binding between protein G and immunoglobulin G. Addition of Tween-20 for blocking produced little background so that protein blockers could be avoided. Prolonged incubation with serum increased markedly the sensitivity of the procedure when compared with the recommended 2 h incubation period. Polyvinylidene difluoride membrane provided better transfer effect, lower background and higher mechanical strength than nitrocellulose membrane. The utilization of only one antibody-specific ligand increased the simplicity, reliability, economy, efficiency and specificity of the method. These modifications make this method significantly better for detection and screening for autoantibodies.


Assuntos
Autoanticorpos/análise , Proteínas de Bactérias , Western Blotting/métodos , Encéfalo/imunologia , Doença de Alzheimer/imunologia , Tampões (Química) , Detergentes , Peroxidase do Rábano Silvestre , Humanos , Proteínas do Tecido Nervoso/imunologia
5.
Aust N Z J Med ; 25(3): 212-7, 1995 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-7487688

RESUMO

BACKGROUND: Until recently, new data on immune aspects of Alzheimer's disease (AD) have suggested that some facets of AD pathogenesis may be immune related. However, the effects of dementia itself on immune function have not been considered. AIM: To compare the distribution of peripheral blood lymphocyte subsets and their function in patients with AD and other dementias. METHODS: Peripheral blood lymphocyte numbers, T cell subset distribution, proliferative responses to mitogens and suppressor cell assay were studied in a well characterised group of patients with AD, and compared to patients with other forms of dementia. Age and sex matched elderly controls were screened to exclude dementia, and young controls were medical, paramedical and laboratory staff. Analysis of variance (ANOVA) and student's test were used for statistical analysis. RESULTS: The CD8+ lymphocyte population was reduced in AD and in other forms of dementia, when compared with non-demented elderly and young controls. Concanavalin A induced lymphocyte transformation was reduced in all dementia groups and in elderly compared with young controls. The changes in T cell numbers and function were not specific for Alzheimer's disease, but were found also in other forms of dementia.


Assuntos
Doença de Alzheimer/sangue , Demência/sangue , Subpopulações de Linfócitos T , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Doença de Alzheimer/fisiopatologia , Antígenos CD8/análise , Demência/fisiopatologia , Feminino , Humanos , Ativação Linfocitária , Contagem de Linfócitos , Masculino , Análise por Pareamento , Pessoa de Meia-Idade , Fatores Sexuais , Subpopulações de Linfócitos T/fisiologia
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