OBJECTIVE: To optimize the component compatibility of Naomaitong for anti-cerebral ischemia treatment based on artificial neural network. METHODS: The five effective parts in Naomaitong were divided into ten groups by uniform design. Except the rats in the sham groups, all rats were subject to right middle cerebral artery occlusion (MCAO) with the suture-occluded method by Longa. The effect of Naomaitong was evaluated based on the bulk density of necrotic zone and infarction area percentage. The artificial neural network model was established for pharmacodynamic prediction. RESULTS: The model established in this study could predict the actions of different drug combinations. The best effect was obtained by the following formula: total anthraquinones of rhubarb (TAR) 180 mg·kg-1, total saponins of Ginseng (TSG) 70 mg·kg-1, total flavonoids of Pueraria (TFP) 450 mg·kg-1, total phenolic acid of Ligusticum wallichii (TPLW) 27 mg·kg-1, rhizome oil (RO) 110 μL·kg-1. CONCLUSION: Different compatibilities of Naomaitong are all effective for the treatment of ischemia in rats. Uniform design combined with ANN can be a more efficient method to realize dose optimization for Naomaitong prescription.

Bundle of His ; Bundle-Branch Block ; Cardiac Pacing, Artificial ; Electrocardiography ; Humans ; Purkinje Fibers

Cardiology ; Cardiovascular System ; China

Cardiology ; Cardiovascular System ; China

BACKGROUNDWhile echocardiography has been a pivotal screening test in pulmonary arterial hypertension (PAH), the presence of structural cardiac defects may affect the ability to reliably predict pulmonary artery pressures (PAPs). This study sought to evaluate the accuracy of Doppler echocardiography (DE) for estimating PAPs in adult atrial septal defect (ASD) patients with PAH.

METHODSA prospective study was carried out to compare the echocardiographic assessment of PAP with the same pressures obtained by right heart catheterization (RHC) in adult ASD patients with PAH who underwent simultaneous DE and RHC. Bland-Altman analyses were performed to evaluate the agreement between DE and RHC measurements of PAPs.

RESULTSTwo hundred and fifty-seven patients were included in the study. A significant overestimation of the systolic pulmonary arterial pressure (sPAP) and mean pulmonary artery pressure (mPAP) was reported by echocardiography compared with those by catheterization ((81.8 ± 26.9) mmHg vs. (72.9 ± 26.9) mmHg, P < 0.01; (51.9 ± 16.4) mmHg vs. (41.4 ± 17.2) mmHg, P < 0.01, respectively). Twenty-one percent (55/257) of the patients had PAH when estimated by echocardiography whereas showed normal results in the subsequent catheterization test. Using Bland-Altman analytic methods, the bias for the echocardiographic assessment of the sPAP was 9.1 mmHg with 95% limits of agreement ranging from -24.4 to 42.6 mmHg. For mPAP measurement, the bias was 10.5 mmHg with 95% limits of agreement ranging from -12.4 to 33.4 mmHg. On multiple linear regression analysis, age, gender, body surface area, ASDs' diameter, PVR, diastolic blood pressure, and echocardiographic assessment of right atrial pressure (RAP) explained 68.8% of the total variability in the model (r(2) = 0.688, P < 0.01).

CONCLUSIONInaccuracy was frequently reported in Doppler echocardiographic assessment of the PAP in adult ASD patients with PAH and was often associated with age, gender, body surface area, ASDs' diameter, pulmonary vascular resistance, diastolic blood pressure and echocardiographic estimation of RAP.

Adolescent ; Adult ; Aged ; Echocardiography, Doppler ; methods ; Female ; Heart Septal Defects, Atrial ; diagnosis ; Humans ; Hypertension, Pulmonary ; diagnosis ; Male ; Middle Aged ; Prospective Studies ; Pulmonary Artery ; pathology ; Young Adult

The present case is a patient with advanced non-small cell lung cancer (NSCLC) who developed leukoencephalopathy following radiotherapy and gefitinib treatments. There are rarely reports of such incidences because the median survival period of advanced NSCLC is only ten months. The features of leukoencephalopathy in this case were atypical for radiation leukoencephalopathy, so it was suspected that the leukoencephalopathy was associated with gefitinib.
Carcinoma, Non-Small-Cell Lung ; drug therapy ; Female ; Humans ; Leukoencephalopathies ; chemically induced ; diagnosis ; Lung Neoplasms ; drug therapy ; Middle Aged ; Quinazolines ; adverse effects ; therapeutic use

长链非编码RNA（lncRNA）是一类长度超过200个核苷酸的非蛋白质编码RNA，在表观遗传、转录和转录后水平调控 各种生物学功能。微小RNA（miRNA）是一类长度为19~25个核苷酸的小的非编码RNA，通过诱导mRNA降解或抑制其翻译， 在 转录后水平调控基因表达。多项研究显示，lncRNA和miRNA与鼻咽癌的发生发展密切相关，然而其潜在的分子机制尚未阐明。 目前认为，lncRNA和miRNA之间的相互作用形成的lncRNA/miRNA轴可以通过调控某些经典信号转导途径或相关蛋白的表达 参与鼻咽癌的发生发展。本文介绍了lncRNA/miRNA调控轴在鼻咽癌生长、转移和治疗中的作用及其机制，并初步总结了现阶 段已知的鼻咽癌中lncRNA和miRNA相互作用调控网络。

Noise pollution has become a common public health problem. The harm of noise exposure to human health cannot be ignored. Exposure to noise not only damages the auditory system but also affects the non-auditory system. At present, accumulating domestic and international epidemiological studies have suggested that noise exposure may be related to glycolipid metabolism disturbance. This article summarized recent epidemiological evidence of the association between noise exposure and glucose and lipid metabolism disorders, such as type 2 diabetes, obesity, metabolic syndrome, and hyperlipidaemia. The potential biological mechanisms connecting noise exposure to glucolipid metabolism were also introduced, e.g. noise as a stressor, sleep disorders, and intestinal flora regulation. This study discussed the impacts of noise exposure on glycolipid metabolism related diseases, providing a basis for further identifying noise related risk factors, conducting future related research, and formulating scientific and effective prevention and control measures.

]复发和转移是影响鼻咽癌患者预后和生存质量的主要原因。目前临床上主要使用基于解剖学的TNM分期标准，并不能 准确反映患者的预后情况，因此需要开发新的更为精准的鼻咽癌预后判断标准。通过对鼻咽癌发病机制的研究，分子标志物在 鼻咽癌预后过程的预测价值日益引起关注。本文总结了近年来在鼻咽癌增殖、生存和侵袭转移等方面的研究进展，以及在这些 研究过程中发现的相关分子标志物和它们在临床预后评估中的作用，综合分析这些分子标志物差异性表达与临床患者生存之间 的相关性，证明了这些分子标志物在评估患者预后中的潜在价值。随着对鼻咽癌发病机制研究的深入，将会发现更多有价值的 分子标志物，这为建立更为精准的鼻咽癌预后评估方法提供了可能。

Background Vascular endothelial injury is an important pathogenic step of vibration-induced hand arm vibration disease (HAVD), and long-term vibration exposure can lead to vascular endothelial cell dysfunction and cell damage. Cell ferroptosis may be one of the important mechanisms of vibration-induced vascular endothelial cell injury and HAVD. Objective To explore whether vibration can induce changes in ferroptosis-related indicators in vascular endothelial cells in vitro. Methods Human umbilical vein endothelial cells (HUVEC) were divided into four vibrationgroups and two control groups. The vibration groups were exposed to an vibration setting of 125 Hz, 6.5 m·s⁻² frequency band and for different durations: 1 d 2 h (total 1 d, 2 h per day), 1 d 4 h (total 1 d, 4 h per day), 2 d 2 h (total 2 d, 2 h per day), and 2 d 4 h (total 2 d, 4 h per day), respectively. All control groups were treated the same as the experimental groups except no vibration exposure. When the cells were 80% confluent, the control groups and the corresponding experimental groups were harvested at the same time. The effects of subgroup treatments on iron, reduced glutathione (GSH), and malondialdehyde (MDA) in HUVEC were detected with a cell ferrous colorimetric test kit, a reduced GSH colorimetric test kit, and a trace MDA test kit, respectively. Real-time quantitative polymerase chain reaction (RT-PCR) was used to detect the mRNA expressions of ferroptosis-related genes acyl-CoA synthetase long chain family member 4 (ACSL4), tumor protein 53 (P53), recombinant human ferritin heavy chain (FTH1), and glutathione peroxidase 4 (GPX4). Western blot (WB) was used to detect the expression levels of ferroptosis-related proteins in HUVEC. Results Compared with the control groups, the vibration induced an increase in the iron content of HUVEC with a dose-response trend. Compared with the control groups, the reduced GSH content of HUVEC in the vibration group decreased with the increase of vibration time and frequency, and there was a dose-response trend. Compared with the control groups, the intracellular MDA content of HUVEC in the 1 d 2 h, 1 d 4 h, and 2 d 4 h vibration groups increased, and the MDA content in the 1 d 2 h and 1 d 4 h vibration group increased with time. The RT-PCR results showed that the mRNA expression levels of ACSL4 and P53 in the 1 d 4 h group increased compared with the 1 d 2 h group. Compared with the 2 d control group, the mRNA expression levels of ACSL4 in the 2 d 2 h vibration group and the 2 d 4 h vibration group increased, and the mRNA expression level of P53 in the 2 d 4 h vibration group increased. Compared with the 1 d control group, the mRNA expression levels of FTH1 and GPX4 in endothelial cells in the vibration 1 d 2 h group decreased. The WB results showed that compared with the control groups, the expression level of ferroptosis-related protein ACSL4 in endothelial cells increased in the vibration 1 d 2 h group; the expression levels of P53 in the 1 d 2 h and 2 d 4 h vibration groups increased; the expression levels of GPX4 decreased in the 1 d 4 h and 2 d 2 h vibration group, and the decrease was more obvious in the 2 d 2 h vibration group than in the 1 d 2 h vibration group; the above differences were statistically significant (P<0.05). Conclusion Vibration induces an increase in iron content, a decrease in GSH, and an increase in MDA in vascular endothelial cells in vitro, as well as mRNA and protein expressions of ferroptosis-related genes ACSL4, P53, FTH1, and GPX4.