HDL2-cholesterol/HDL3-cholesterol ratio was associated with insulin resistance,high-molecular-weight adiponectin,and components for metabolic syndrome in Japanese

AimsRecent data have suggested a relationship between the high-density lipoprotein (HDL) subclass ratio and metabolic syndrome (MetS). However, limited information is available regarding the relationships between the HDL subclass ratio and insulin resistance, associated adipocytokine levels, and MetS components. The associations of the high-density lipoprotein 2 cholesterol (HDL₂-C) to high-density lipoprotein 3 cholesterol (HDL₃-C) ratio with the homeostasis model assessment of insulin resistance (HOMA-IR) index, high-molecular-weight adiponectin (HMW-Ad) levels, and MetS components were examined.MethodsThe study included 1155 Japanese subjects who met our inclusion criteria and underwent an annual health examination that included an HDL subclass analysis.ResultsThe HDL₂-C/HDL₃-C ratio and the HMW-Ad level gradually decreased as the number of MetS components increased. In contrast, HOMA-IR gradually increased as the number of MetS components increased. The HDL₂-C/HDL₃-C ratio correlated inversely with HOMA-IR and positively with the HMW-Ad level. A strong positive correlation was observed between the HDL₂-C/HDL₃-C ratio and the HDL-C level. The HDL₂-C/HDL₃-C ratio exhibited moderate negative correlations with the body mass index, waist circumference, and triglyceride level. Weak negative correlations were observed for the HDL₂-C/HDL₃-C ratio with the systolic and diastolic blood pressure and fasting plasma glucose levels.ConclusionsOur data indicated that the HDL₂-C/HDL₃-C ratio was associated with insulin resistance, the HMW-Ad level, and MetS components, and it was useful for evaluating MetS in Japanese individuals.     

贲门腺癌组织中RKIP表达变化及其与血清NF-κBp65蛋白、T淋巴细胞亚群的关系

目的：观察Raf激酶抑制蛋白（ RKIP）在贲门腺癌组织中的表达变化,进一步探讨贲门腺癌的发生、发展机制。方法收集160例贲门腺癌患者（腺癌组）的腺癌组织及其癌旁组织,应用免疫组织化学SP法检测RKIP表达;采用ELISA法和流术细胞术分别检测腺癌组和50例查体健康者（对照组）的血清NF-κB p65蛋白、T淋巴细胞亚群水平。采用Spearman秩和相关分析法分析指标间的关系。结果贲门腺癌及癌旁组织中RKIP表达阳性率分别为38．7％、52．5％（P＜0．05）,在有、无淋巴结转移者中的表达阳性率分别为24．4％、53．1％（P＜0．05,t＝4．34）;腺癌组血清总NF-κB p65蛋白水平高于对照组（P＜0．05）,但RKIP表达阳性与阴性者水平无显著差异（P＞0．05）,有淋巴结转移者高于无淋巴结转移者（P＜0．05）;腺癌组细胞免疫功能低于对照组,尤以RKIP表达阴性者为著（ P＜0．05）。结论 RKIP在贲门腺癌组织中表达降低并与肿瘤发生、发展、浸润转移有关,可能机制为抑制NF-κB活性及细胞免疫功能,使肿瘤细胞逃避机体的免疫监视。     

HIV-1 subtype frequency in Northeast Brazil: A systematic review and meta-analysis

Information on human immunodeficiency virus (HIV) molecular epidemiology is required to verify HIV/AIDS (acquired immune deficiency syndrome) epidemic dynamics in different regions, as well as provide support for response to antiretroviral therapy, transmission of resistance mutations, disease progression, and viral spread. The aim of this study was to conduct a systematic review and meta-analysis of the frequency of HIV-1 subtypes in Northeast Brazil. Seventy-six articles that refer to HIV-1 and its subtypes in the Northeast Brazil and published between 1 January 1999 and 31 August 2019 were identified. We included 27 articles for the qualitative synthesis, thus analyzing results from 4466 patients and 4298 genomic sequences. The results showed that subtypes B, F, and C and recombinant BF were responsible for 76% (IC95%: 71-80), 8% (IC95%: 5-11), 2% (IC95%: 2-3), and 7% (IC95%: 4-12) infections, respectively. The highest proportion of subtype B infections (82.2%) was observed in Piauí, while the subtype F had a high frequency in Pernambuco (23.4%). Bahia presented 11.6% of the proportion of recombinant BF. In addition, several recombinants such as AG, BC, BCF, and BD have been identified in the region. This is the first systematic review and meta-analysis on the HIV-1 subtype distribution in Northeast Brazil and has shown a high circulating viral diversity. Although subtype B is predominant in Brazil, a large frequency of non-B subtypes has also been found, which may have consequences for response to antiretroviral therapy, disease progression, and transmission. Thus, HIV molecular epidemiological data are essential for epidemic prevention and control strategies.     

Matrix Metalloproteinase-9 (MMP-9) Expression in Different Subtypes of Ameloblastoma

Background

Ameloblastoma is a common benign odontogenic tumor of the jaw with a local invasive and highly destructive behavior and can develop in any age, with peak prevalence in 3rd–4th decade. Ameloblastoma can be divided into six histological types: follicular, plexiform, acanthomatous, desmoplastic, granular, and basal cell. Matrix metalloproteinase-9 (MMP-9) (92-kD gelatinase/type IV collagenases = gelatinase B) is involved in bone resorption by degradation of extracellular matrix and osteoclasts recruitment. Recent studies have found that MMP-9 is expressed by ameloblastoma and has a role in ameloblastoma local invasiveness.

Objective

To analyze MMP-9 expression between different histological types of ameloblastoma.

Material and Method

Forty samples of ameloblastoma were collected through consecutive sampling and the MMP-9 expression was detected using immunohistochemistry.

Result

All samples showed positive MMP-9 expression with moderate to strong intensity. 82.4 % plexiform type and 83.3 % mixed type have strong immunoexpression, significantly different with follicular type with only 36.4 % (P < 0.05).

Conclusion

Ameloblastoma plexiform and mixed type have higher MMP-9 expression than ameloblastoma follicular type. Different MMP-9 expression may contribute in different ameloblastoma biological behavior.     

Association between molecular subtypes and lymph node status in invasive breast cancer

Background: The predictors for the involvement of lymph node (LN) have been widely studied. But the implication of the molecular type has not been well studied. Using the database of our institution, we investigated this relation. Methods: Patients with T1 and T2 primary breast cancer without distant metastasis were included in our study from 2012 Jan to 2013 Dec. All patients undertook the resection of the primary and the axillary lymph nodes (ALNs). We collected the clinical data including age at diagnosis, the status of ER, PR and HER2, tumor size, nodal status, and histological type. The relationship between demographic, tumor characteristics and lymph node status was evaluated. Results: 814 patients were included in our study. The number and the percentage (in parentheses) of each type of breast cancer is as follows: Luminal A 230 (28.3%), Luminal Her2- 284 (34.9%), Luminal Her2+ 104 (12.8%), HER2+ 72 (8.8%), TNBC 124 (15.2%). On univariate and multivariate analysis, tumor size and tumor subtype show statistical significance with LN involvement. Using TNBC as a reference, both Luminal B type (Luminal HER2-, Luminal HER2+) shows significant higher probability of LN involvement. Conclusions: LN involvement is an intrinsic characteristic for molecular subtype of breast cancer. Triple positive and triple negative breast cancer accounts the most and least possibility of LN involvement.     

外周血T淋巴细胞亚群水平对结直肠癌患者术后复发的影响及预测价值分析

目的 探讨外周血T淋巴细胞亚群水平对腹腔镜根治术后结直肠癌（CRC）患者术后复发的影响,并分析其预测价值。方法 纳入2016年1月－2017年1月该院行腹腔镜根治术治疗的CRC患者120例,分为复发组（n = 96）和未复发组（n = 24）,检测患者术后第１天外周血中CD3⁺、CD4⁺、CD8⁺和CD4⁺/CD8⁺的含量,采用两独立样本t检验分析两组间差异,Logistic回归模型分析各指标与复发的关联,受试者工作特征曲线（ROC）分析其在预测CRC术后复发中的价值。结果 术后复发组CD3⁺、CD4⁺和CD4⁺/CD8⁺水平明显低于未复发组（P < 0.05）,CD8⁺水平高于未复发组（P < 0.05）。Logistic回归分析表明,血清中CD8⁺细胞水平（O = 1.14 > 1,95%CI：1.05～1.23）是影响结CRC术后复发的独立危险因素,而CD3⁺（O = 0.82,95%CI：0.75～0.90）、CD4⁺（O = 0.91,95%CI：0.85～0.98）和CD4⁺/CD8⁺（O = 0.20,95%CI：0.06～0.59）是影响CRC术后复发的保护性因素。ROC曲线表明,CD3⁺、CD4⁺、CD8⁺和CD4⁺/CD8⁺水平对术后复发具有一定的预测价值。结论 外周血中CD3⁺、CD4⁺、CD8⁺和CD4⁺/CD8⁺的水平与复发有关,是CRC患者术后复发的独立影响因素,与预后相关,对术后复发具有一定的预测价值。     

三维重建技术在肺腺癌新分类标准诊断中的价值

目的 探讨三维重建技术对肺腺癌新分类标准在术前外科诊断中的应用价值,助力于开发人工智能在肺癌辅助诊疗方面的深度学习模型系统.方法 回顾性分析2018年10月至2020年6月我院收治的173例经手术病理证实且肿瘤直径≤2 cm肺磨玻璃结节患者的临床资料,其中男55例、女118例,中位年龄61(28～82)岁.同一患者不同...     

DCE-MRI与DWI直方图分析评估乳腺癌分子分型、预后和新辅助治疗的研究进展

乳腺癌的高度异质性影响病人治疗方案选择和临床预后。相较于传统影像特征,动态增强MRI(DCE-MRI)和扩散加权成像(DWI)直方图可以深入挖掘肿瘤内无法通过肉眼观察的信息,提供更多反映肿瘤异质性的量化指标,从而提供更多有价值、可靠的临床诊疗及决策信息。就DCE-MRI和DWI直方图分析应用于乳腺癌的分子分型、预后因素及新辅助治疗疗效方面的研究进展进行综述。     

肺炎支原体肺炎患儿外周血CD4+T淋巴细胞表面IL-18Rα的表达

目的探讨肺炎支原体肺炎(MPP)患儿外周血CD4 T淋巴细胞表面IL-18Rα表达的意义。方法采用流式细胞术测定35例MPP患儿外周血T淋巴细胞亚群(CD3/CD4/CD8)和CD4 T淋巴细胞表面IL-18Rα的表达水平,并与健康对照组比较。结果MPP患儿T细胞亚群与健康对照组相比,CD3 细胞百分率降低(P<0.05),51.4%的MPP患儿CD4 /CD8 在1.0~1.9的范围之外。急性期MPP组CD4 T淋巴细胞表面IL-18Rα的表达较正常对照组明显升高,差异有统计学意义(P<0.01);恢复期与对照组比较差异有统计学意义(P<0.05)。恢复期表达水平下降,与急性期比较差异有统计学意义(P<0.05)。T细胞亚群异常组与正常组相比,CD4 T淋巴细胞IL-18Rα表达明显增高(P<0.01),T细胞亚群正常组与健康对照组比较,差异无统计学意义(P>0.05)。结论MPP患儿存在细胞免疫功能紊乱,外周血T淋巴细胞存在Th1/Th2失衡,急性期表现为Th1优势应答。