IL - 22与糖尿病关系的研究进展

目的 本文总结了近年来白细胞介素22 (interleukin 22, IL - 22)与糖尿病(diabetes mellitus，DM)发病关系的研究，希望能为DM的防治及病情评估提供较为可行的策略靶点。方法 本文资料来源于中国知网、PubMed等数据库，以IL - 22、糖尿病、胰岛素、糖异生等关键词进行检索得到。结果 IL - 22可增加胰岛素分泌、促进胰岛素信号转导及维持葡萄糖稳态，参与DM发生、发展及病情演变。结论 IL - 22可通过多个环节参与DM的发病及病情演变，以IL - 22为靶点对于防治DM具有重要参考价值。     

胰岛素泵强化治疗对初治2型糖尿病的疗效及预后

目的探析胰岛素泵强化治疗对初治2型糖尿病的疗效及对预后的影响。方法将2017年8月到2018年12月我院收治的120例初治2型糖尿病患者作为主要研究对象,采用数字随机表法将其分为两组,60例/组。对照组采用胰岛素皮下注射强化治疗,观察组采用胰岛素泵强化治疗,比较两组患者治疗前后的血糖变化情况和预后相关指标。结果治疗后两组患者的空腹血糖、餐后2h血糖、糖化果糖胺水平均明显低于治疗前,且观察组明显低于对照组,有显著差异;两组患者治疗后的胰岛素抵抗指数均低于治疗前,且观察组低于对照组,差异显著;观察组患者的血糖达标时间短于对照组,胰岛素用量少于对照组,组间比较存在显著差异;观察组的低血糖发生率显著低于对照组,有显著差异(P<0.05)。结论采用胰岛素泵强化治疗对初治2型糖尿病患者而言效果显著,能够降低患者的血糖值,缩短血糖达标时间,减少胰岛素的剂量,且预后佳,更值得进一步推广应用。     

White matter correlates of different aspects of facial affect recognition impairment following traumatic brain injury

Although facial affect recognition deficits are well documented in individuals with moderate-to-severe traumatic brain injury (TBI), little research has examined the neural mechanisms underlying these impairments. Here, we use diffusion tensor imaging (DTI), specifically the scalars fractional anisotropy (FA), mean diffusivity (MD), and radial diffusivity (RD), to examine relationships between regional white-matter integrity and two facial affect sub-skills: perceptual affect recognition abilities (measured by an affect matching task) and verbal categorization of facial affect (measured by an affect labeling task). Our results showed that, within the TBI group, higher levels of white-matter integrity in tracts involved in affect recognition (inferior fronto-occipital, inferior longitudinal, and uncinate fasciculi) were associated with better performance on both tasks. Verbal categorization skills were specifically and positively correlated with integrity of the left uncinate fasciculus. Moreover, we observed a striking lateralization effect, with perceptual abilities having an almost exclusive relationship with integrity of right hemisphere tracts, while verbal abilities were associated with both left and right hemisphere integrity. The findings advance our understanding of the neurobiological mechanisms that underlie subcomponents of facial affect recognition and lead to different patterns of facial affect recognition impairment in adults with TBI.     

Facial expression recognition in Alzheimer’s disease: A systematic review

Introduction: It is well established that behavioral variant frontotemporal dementia can impair social and emotional function. However, there is no consensus regarding how Alzheimer’s disease can affect facial expression recognition. We aim to systematically review all the literature addressing this issue over the last 10 years.

Method: We conducted a search based on the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). The search for literature was undertaken on 19 September 2017, using Pubmed, SciELO, BIREME, and Thomson Reuters Web of Science electronic databases. The key terms for the search were: Alzheimer’s disease, dementia, and facial expression recognition.

Results: We screened 173 articles, and 22 of them were selected. The most common methodology involved showing participants photographs of people expressing the six basic emotions—fear, anger, sadness, disgust, surprise, and happiness. Results were ambiguous. Among people with mild Alzheimer’s disease, happiness was easier to recognize than the other five basic emotions, with sadness and anger the most difficult to recognize. In addition, the intensity level of the emotions presented seems to be important, and facial expression recognition is related to specific cognitive capacities, including executive function and visuoperceptual abilities. Impairment in facial expression recognition does not appear to be a consistent neuropsychological finding in Alzheimer’s disease.

Conclusions: The lack of standardized assessment instruments and the heterogeneity of the methods and samples used across studies hamper comparisons. Future researches should investigate facial expression recognition through more ecological and standardized methods.     

西格列汀联合二甲双胍治疗肥胖型2型糖尿病的疗效及对体脂含量情况分析

目的研究肥胖型2型糖尿病患者联合采用西格列汀、二甲双胍治疗的临床效果。方法选择2018年10月—2020年4月该院100例肥胖型2型糖尿病患者为研究对象,采用随机数表法分成常规组和治疗组,每组50例。常规组予二甲双胍治疗,治疗组予二甲双胍+西格列汀治疗。比较两组治疗效果、血糖指标、体脂含量、胰岛功能指标及不良反应。。结果两组治疗效果比较,差异有统计学意义(P<0.05)。治疗后常规组血糖指标高于治疗组,差异有统计学意义(t=8.183、4.828、18.158,P<0.05)。治疗后常规组体脂含量高于治疗组,差异有统计学意义(t=5.993、7.657、4.420,P<0.05)。治疗后两组胰岛功能比较,差异有统计学意义(t=5.898、5.283、16.033,P<0.05)。常规组不良反应总发生率低于治疗组,但差异无统计学意义(χ²=0.136,P=0.712)。结论西格列汀、二甲双胍联合治疗肥胖型2型糖尿病效果确切。     

Distinct brain representations of processed and unprocessed foods

Among all of the stimuli surrounding us, food is arguably the most rewarding for the essential role it plays in our survival. In previous visual recognition research, it has already been demonstrated that the brain not only differentiates edible stimuli from non‐edible stimuli but also is endowed with the ability to detect foods’ idiosyncratic properties such as energy content. Given the contribution of the cooked diet to human evolution, in the present study we investigated whether the brain is sensitive to the level of processing food underwent, based solely on its visual appearance. We thus recorded visual evoked potentials (VEPs) from normal‐weight healthy volunteers who viewed color images of unprocessed and processed foods equated in caloric content. Results showed that VEPs and underlying neural sources differed as early as 130 ms post‐image onset when participants viewed unprocessed versus processed foods, suggesting a within‐category early discrimination of food stimuli. Responses to unprocessed foods engaged the inferior frontal and temporal regions and the premotor cortices. In contrast, viewing processed foods led to the recruitment of occipito‐temporal cortices bilaterally, consistently with other motivationally relevant stimuli. This is the first evidence of diverging brain responses to food as a function of the transformation undergone during its preparation that provides insights on the spatiotemporal dynamics of food recognition.     

Correlation analysis of intestinal flora and pathological process of type 2 diabetes mellitus

ObjectiveTo observe the relationship between the different stages of type 2 diabetes mellitus (T2DM) and the intestinal flora and verify its underlying mechanism.MethodsT2DM rats were generated by high-fat diet (HFD) combined with intraperitoneal streptozotocin (STZ) injection. The rats were divided into four groups: the control group (fed with normal feed for 1 month), the HFD group (fed with HFD for 1 month), the T2DM group (HFD combined with STZ and blood glucose ≥11.1 mM), and the unformed T2DM model (Un-mod) group (HFD combined with STZ and blood glucose <11.1 mM). Feces were collected, and bacterial communities in the fecal samples were analyzed by 16S rRNA gene sequencing. The content of short-chain fatty acids (SCFAs) in feces was measured by gas chromatography. Western blot and quantitative real-time polymerase chain reaction were used to detect the expression of G protein-coupled receptor 41 (GPR41) and GPR43.ResultsAt different stages of T2DM, the intestinal flora and SCFAs content of rats were significantly decreased (all P < .05). Our results indicated that g__Prevotella had a significant negative correlation, and g__Ruminococcus_torques_group and g__lachnoclastic had a significant positive correlation with blood glucose. The content of SCFAs, in particular acetate and butyrate, in rat feces of different stages of T2DM were significantly reduced, as well as GPR41 and GPR43 expression. The results in the Un-mod group were similar to the T2DM group, and the expression of GPR41 and GPR43 proteins were significantly higher than those in the T2DM group (both P < .001).ConclusionThe intestinal flora–SCFAs–GPR41/GPR43 network may be important in the development of T2DM. Decreasing blood glucose levels by regulating the intestinal flora may become a new therapeutic strategy for T2DM, which has very important clinical and social values.