红花逍遥片联合左甲状腺素钠片治疗气滞血瘀型甲状腺结节患者的临床疗效

目的:探讨红花逍遥片联合左甲状腺素钠片治疗围绝经期气滞血瘀型甲状腺结节患者的临床疗效。方法:选取2020年6月至2022年6月石家庄市中医院收治的围绝经期甲状腺结节患者180例作为研究对象,按照随机数字表法随机分为对照组和观察组,每组90例。对照组给予左甲状腺素钠片口服,观察组在对照组基础上采用红花逍遥片。比较2组患者治疗前后的临床总有效率、中医证候积分、甲状腺结节大小、甲状腺功能3项、血清胰岛素生长因子-1(IGF-1)、转化生长因子-β1(TGF-β1)、血管内皮生长因子(VEGF)及白细胞介素-1β(IL-1β)、白细胞介素-6(IL-6)水平。结果:观察组和对照组的临床总有效率分别为94.44%和82.22%,差异有统计学意义(P<0.05)。2组患者中医证候总积分较治疗前均明显降低,差异有统计学意义(P<0.05),相较于对照组,观察组的中医证候积分降低程度更大,差异有统计学意义(P<0.01);相较治疗前,对照组的甲状腺结节最大直径无明显变化,差异无统计学意义(P>0.05),相较于治疗后的对照组,观察组的甲状腺结节最大直径明显减小,差异有统计学意义(P<0.05);相较于治疗前,2组患者的促甲状腺激素(TSH)均有下降,其中观察组下降幅度更大,与对照组比较,差异有统计学意义(P<0.05);治疗后,2组患者FT3和FT4水平显著升高,差异有统计学意义(P<0.05),相较于对照组,观察组治疗后的FT4水平差异有统计学意义(P<0.05)。相较治疗前,对照组的IGF-1、VEGF、IL-1β水平无明显变化,差异无统计学意义(P>0.05),对照组与观察组的TGF-β、IL-6、IL-1β较治疗前明显升高(P<0.05);观察组的IGF-1、VEGF较治疗前明显降低,差异有统计学意义(P<0.05)。相较于对照组,观察组治疗后的IGF-1、TGF-β、VEGF及IL-1β、IL-6水平差异均有统计学意义(均P<0.05)。结论:红花逍遥片联合左甲状腺素钠片治疗气滞血瘀型围绝经期甲状腺结节患者的临床效果佳,无明显不良反应,值得临床推广。     

耳后皮下蒂岛状皮瓣修复耳甲腔缺损

目的观察皮下蒂岛状皮瓣(旋转门皮瓣)修复耳甲腔皮肤缺损创面的效果。方法2018年4月至2019年4月,东南大学附属徐州医院整形美容科用耳后皮下蒂旋转门皮瓣治疗耳甲腔皮肤缺损10例,男6例,女4例,年龄2个月至68岁,平均57岁;缺损大小1.0 cm×1.0 cm~2.5 cm×1.5 cm。结果10例患者术后均一期愈合,耳郭形态和功能较好。随访6~24个月,平均10个月,肿物无复发;患者术后满意度100%。结论耳后皮下蒂岛状旋转门皮瓣修复耳甲腔缺损手术方法简单、手术时间短易学,值得临床应用。     

监狱犯人早年父母教养方式的调查研究

目的调查并研究监狱犯人早年的父母教养方式与正常人群早年的父母教养方式的差异,监狱犯人早年父母教养方式的一致性。方法通过80名监狱犯人对早年父母教养方式的回忆,采用父母教养方式量表(EMBU)进行评定。结果父亲对犯人的各因子及母亲对犯人的各因子分别与中国常模比较差异均具有显著性;父母教养方式具有显著的不一致性。结论监狱犯人的父母对子女的早年教养方式与正常人群不同。     

Role of purinergic system in tracheobronchial reactivity of healthy and bronchopathic subjects

We have investigated the effect of inhaled adenosine on bronchomotor tone in 16 healthy and 24 allergic and non-allergic bronchopathic subjects. We determined the inhaled adenosine dose-response curves after no treatment and after treatment with aminophylline (240 mg in 10 min), reproterol (90 mcg in 2 min) and salbutamol (100 mcg in 2 min) administered intravenously 15 min before adenosine and reproterol (500 mcg) and salbutamol (200 mcg) administered by inhalation from a metered aerosol 30 min before adenosine on separate days. Without prior treatment, inhaled adenosine caused bronchoconstriction in both groups of subjects (normal, and atopic and non-atopic asthmatic ones), but the peripheral airways revealed only a moderate change in normal subjects. Aminophylline caused a greater inhibition of adenosine bronchoconstriction than did reproterol. These results suggest that inhaled adenosine bronchoconstriction involved purinergic transmission and that it is mediated via a P1/Ri (A-1/R1) receptor. Aminophylline is a potent antagonist at purinoceptor level. Reproterol inhibits bronchoconstriction by a mechanism independent of its effect on beta-adrenergic receptors. Because salbutamol, i.e. a beta 2-agonist bronchodilator, did not inhibit adenosine-induced bronchoconstriction (or very nearly so), our results support the view that reproterol antagonizes P1/Ri (A1/R1) tracheobronchial receptors.     

五味子和头孢氨苄对大肠埃希氏菌及金黄色葡萄球菌抑制作用的实验研究

目的 :观察五味子和头孢氨苄对大肠埃希氏菌和金黄色葡萄球菌的抑制作用。方法 :试管稀释法。结果 :五味子水煎剂 (1g/ml,pH =2 .8)对二株受试菌的MBC分别是 6 2 .5g/L和 31.2 5g/L ,而五味子水煎剂调pH为 7 0后 ,其MBC均大于 5 0 0g/L。头孢氨苄对大肠埃希氏菌的MIC和MBC分别是 4 88mg/L和 15 6 2 5mg/L ;对金黄色葡萄球菌的MIC和MBC分别是 2 44mg/L和 78 13mg/L。pH为 7 0的五味子联用头孢氨苄对大肠埃希氏菌的MBC分别为大于 2 5 0g/L和 15 6 2 5mg/L ,部分抑菌浓度指数为 1 5。结论 :pH为 2 8的五味子水煎剂有一定抑制致病菌作用 ;pH为 7 0的五味子水煎剂与头孢氨苄联用 ,两药呈现无关作用。     

基于改进TransUnet网络的血管内超声图像边界提取方法研究

血管内超声(IVUS)图像是观测血管内部结构的首选影像学手段,基于IVUS图像的内膜和中外膜边界的提取是实现冠脉粥样硬化精准诊断的前提和关键。针对IVUS图像结构复杂、对比度低、边界提取困难等问题,本研究提出一种基于改进TransUnet网络的分割方法。首先,针对IVUS图像边界提取难点,对边血管、血管分叉、导丝伪像、阴影等4种图像结构进行建模,并基于建模结果予以定向数据增强;而后,结合IVUS图像的环状结构分布特点,在TransUnet网络中提出了Polar-bias归纳偏置的策略,并对IVUS图像进行像素级的分类;最后,基于分类结果优化GVF snake模型的外力场,进而提取IVUS图像的内膜和中外膜边界。采用国际标准IVUS图像数据集(两组不同中心频率,共512幅图像)对算法进行评测,引入JMard距离(JM),Hausdorff距离(HD)和面积差异百分比(PAD)等3个评测指标,在数据集A中JM为0.87, HD为0.87, PAD为0.18,数据集B中JM为0.91, HD为0.25, PAD为0.08。实验结果表明,所提出的算法在两组数据集的内膜及中外膜提取问题中的表现均...     

Adverse childhood experiences and the development of Down syndrome regression disorder

Down syndrome regression disorder (DSRD) is a clinical symptom cluster of acute or subacute neurocognitive regression in otherwise health persons with Down syndrome. The objective of this study was to evaluate if adverse childhood experiences (ACEs) were more prevalent in children with DSRD than those with DS alone. A survey-based, cohort-based study was performed. Caregivers of individuals with DSRD with onset of symptoms between age 10 and 30 years and DS alone were administered the ACEs questionnaire via an online REDCap survey. A total of 159 responses were collected after excluding incomplete surveys and those not meeting criteria for DSRD. Individuals with DSRD were not more likely to experience ACEs (p = 0.18, 95% confidence interval [CI]: 0.43–1.17). In those with ACEs prior to the onset of symptoms, the median time prior was 7 months (interquartile range: 5–10). Individuals with DSRD were more likely to report three or more ACEs (52, 33%) compared to those with DS alone (39, 22%) (p = 0.02, 95% CI: 1.08–2.87). Exposure to ACEs were not predictive of response to particular therapeutic interventions although those with multiple ACEs 3 months prior to the onset of symptoms was associated with lower response rates to benzodiazepines and immunotherapy (p = 0.02, 95% CI: −3.64–−1.13). This study provides preliminary data that individuals with DSRD experience ACEs at a similar rate to individuals with only DS alone, although three or more ACEs, often preceding the onset of symptoms, was more prevalent in individuals with DSRD.     

Characterization of the Ca2+ responses evoked by ATP and other nucleotides in mammalian brain astrocytes

1. This study was aimed at characterizing ATP-induced rises in cytosolic free calcium ion, [Ca²⁺]_i, in a population of rat striatal astrocytes loaded with the fluorescent Ca²⁺ probe Fura2, by means of fluorescence spectrometry.
2. ATP triggered a fast and transient elevation of [Ca²⁺]_i in a concentration-dependent manner. The responses of the purine analogues 2-methylthio-ATP (2-meSATP), adenosine-5′-O-(2-thiodiphosphate) (ADPβS), as well as uridine-5′-triphosphate (UTP) resembled that of ATP, while α,β-methylene-ATP (α,β-meATP) and β,γ-methylene-ATP (β,γ-meATP) were totally ineffective.
3. Suramin (50 μM) had only a minor effect on the ATP response, whereas pyridoxal phosphate-6-azophenyl-2′,4′-disulphonic acid (PPADS) (5 μM) significantly depressed the maximum response.
4. Extracellular Ca²⁺ did not contribute to the observed [Ca²⁺]_i rise: removing calcium from the extracellular medium (with 1 mM EGTA) or blocking its influx by means of either Ni²⁺ (1 mM) or Mn²⁺ (1 mM) did not modify the nucleotide responses.
5. Furthermore, after preincubation with 10 μM thapsigargin, the nucleotide-evoked [Ca²⁺]_i increments were completely abolished. In contrast, 10 mM caffeine did not affect the responses, suggesting that thapsigargin-, but not caffeine/ryanodine-sensitive stores are involved.
6. Both application of the G-protein blocker guanosine-5′-O-(2-thiodiphosphate) (GDPβS) (1 mM) and preincubation with pertussis toxin (PTx) (350 ng ml⁻¹) partially inhibited the nucleotide-mediated responses. Moreover, the phospholipase C (PLC) inhibitor U-73122, but not its inactive stereoisomer U-73343 (5 μM), significantly reduced the ATP-evoked [Ca²⁺]_i rise.
7. In conclusion, our results suggest that, in rat striatal astrocytes, ATP-elicited elevation of [Ca²⁺]_i is due solely to release from intracellular stores and is mediated by a G-protein-linked P2Y receptor, partially sensitive to PTx and coupled to PLC.

     

Coiled bodies contain U7 small nuclear RNA and associate with specific DNA sequences in interphase human cells.

Coiled bodies (CBs) are nuclear organelles whose structures appear to be highly conserved in evolution. In rapidly cycling cells, they are typically located in the nucleoplasm but are often found in contact with the nucleolus. The CBs in human cells contain a unique protein, called p80-coilin. Studies on amphibian oocyte nuclei have revealed a protein within the "sphere" organelle that shares significant structural similarity to p80-coilin. Spheres and CBs are also highly enriched in small nuclear ribonucleoproteins and other RNA-processing components. We present evidence that, like spheres, CBs contain U7 small nuclear RNA (snRNA) and associate with specific chromosomal loci. Using biotinylated 2'-O-methyl oligonucleotides complementary to the 5' end of U7 snRNA and fluorescence in situ hybridization, we show that U7 is distributed throughout the nucleoplasm, excluding nucleoli, and is concentrated in CBs. Interestingly, we found that CBs often associate with subsets of the histone, U1, and U2 snRNA gene loci in interphase HeLa-ATCC and HEp-2 monolayer cells. However, in a strain of suspension-grown HeLa cells, called HeLa-JS1000, we found a much lower rate of association between CBs and snRNA genes. Possible roles for CBs in the metabolism of these various histone and snRNAs are discussed.