Disappearance of molsidomine effects on pulmonary circulation of patients with chronic obstructive pulmonary disease after a three week treatment

The effect of oral molsidomine (M) on the pulmonary artery hypertension of patients with chronic obstructive pulmonary disease (COPD) was investigated during an acute study (4 mg once) and after a 3 week-treatment (3 times 4 mg a day), on a double-blind basis in 16 patients, 8 receiving a placebo, and 8 molsidomine. Ventilatory and cardiocirculatory indices were obtained at rest and during exercise. When acutely given, molsidomine reduces the mean pulmonary arterial pressure (PAP), the pulmonary vascular resistance (PVR) and the arterial O2 partial pressure (PaO2), increasing heart rate (HR) as well as the alveo-arterial O2 partial pressure difference (P(A-a)O2). During exercise, pulmonary arterial pressure and pulmonary vascular resistance decrease while heart rate increases without modification of arterial blood gases. After a 3-week treatment, molsidomine no more improves any index but significantly reduces cardiac output during exercise and consequently the O2 delivery to the tissues. The same feature has already been observed for other nitrates. It thus seems inappropriate to prescribe nitrates or nitrate-like drugs to chronic obstructive pulmonary disease patients with a view to lower their pulmonary hypertension.     

Inclusion of CpG adjuvant with plasmid DNA coding for NcGRA7 improves protection against congenital neosporosis

The present study showed that incorporation of CpG adjuvant into plasmid DNA coding for NcGRA7 antigen resulted in a twofold increase in the level of protection against congenital transfer of Neospora caninum. The level of protection was considerably higher than that observed in pups born from dams immunized with nonrecombinant plasmid.     

10年早产儿及新生儿结果分析

目的 探讨早产儿的发生因素和对母儿的影响及防治。方法 收集１９８９年１月至１９９８年１２月,１０年中我院住院分娩的全部早产病例８１６例,按产５年和后５年分为两组进行回顾性分析。结果 前组早产数为５３４例,早产发生率为３．２０％;后组早产数为２８２例,发生率为３．０５％,两组发生率对比无统计学差异（Ｐ〉０．０５）。其流行病学调查显示在职业、流动人口数和产前检查方面两组对比有极其显著性差异（Ｐ〈０．０     

针刺配合白木香根治疗颈性眩晕50例

目的 :探讨针刺、针刺配合闽东青草白木香根治疗颈性眩晕。方法 :对 10 0例以眩晕为主要症状的颈椎病进行随机分组治疗 ,5 0例针刺治疗 ,另 5 0例针刺配合白木香根治疗。结果 :针刺组有效率80 % ,针药组有效率 94 % ,经统计学处理 ,P <0 .0 5 ,有显著差异。结论 :针刺治疗颈性眩晕是重要的治疗方法 ,但针刺与服药配合优于针刺组 ,说明白木香根有促进病情康复。     

Whole-exome sequencing identifies novel mutations in genes responsible for retinitis pigmentosa in 2 nonconsanguineous Chinese families

AIM: To detect the pathogenetic mutations responsible for nonsyndromic autosomal recessive retinitis pigmentosa (RP) in 2 nonconsanguineous Chinese families. METHODS: The clinical data, including detailed medical history, best corrected visual acuity (BCVA), slit-lamp biomicroscope examination, fundus photography, optical coherence tomography, static perimetry, and full field electroretinogram, were collected from the members of 2 nonconsanguineous Chinese families preliminarily diagnosed with RP. Genomic DNA was extracted from the probands and other available family members; whole-exome sequencing was conducted with the DNA samples provided by the probands, and all mutations detected by whole-exome sequencing were verified using Sanger sequencing in the probands and the other available family members. The verified novel mutations were further sequenced in 192 ethnicity matched healthy controls. RESULTS: The patients from the 2 families exhibited the typical symptoms of RP, including night blindness and progressive constriction of the visual field, and the fundus examinations showed attenuated retinal arterioles, peripheral bone spicule pigment deposits, and waxy optic discs. Whole-exome sequencing revealed a novel nonsense mutation in FAM161A (c.943A>T, p.Lys315*) and compound heterozygous mutations in RP1L1 (c.56C>A, p.Pro19His; c.5470C>T, p.Gln1824*). The nonsense c.5470C>T, p.Gln1824* mutation was novel. All mutations were verified by Sanger sequencing. The mutation p.Lys315* in FAM161A co-segregated with the phenotype, and all the nonsense mutations were absent from the ethnicity matched healthy controls and all available databases. CONCLUSION: We identify 2 novel mutations in genes responsible for autosomal recessive RP, and the mutation in FAM161A is reported for the first time in a Chinese population. Our result not only enriches the knowledge of the mutation frequency and spectrum in the genes responsible for nonsyndromic RP but also provides a new target for future gene therapy.     

An Easily Used Phenomenological Magnetization Model and Its Empirical Expressions Based on Jiles–Atherton Parameters

In this paper, a simple magnetization model convenient for engineering applications is presented based on the expressions of the first-order LTI system model. Considering the trade-off between the nonlinearity of anhysteretic magnetization and the hysteresis width, the proposed model employs two different equations with different magnetic field amplitudes. Furthermore, the proposed model utilizes the first-order LTI system model with a low magnetic field amplitude and a simple nonlinear function, based on the amplitude–frequency function, with a high magnetic field amplitude. Two important characteristic parameters for engineering applications, namely, amplitude and the equivalent phase lag, were exacted and analyzed to validate the computation precision of the proposed model. Then, the model was verified through comparisons to the validated Jiles–Atherton model. For easy use, similar to a physics-based model instead of a fitting method, empirical expressions for the model parameters were given, and applicable ranges of these equations were determined using the parameters of the Jiles–Atherton model. Finally, an example of the magnetization model applied to an on/off type device was computed to further verify the effectiveness of the proposed model with quite a simple expression.     

Gyral peaks: Novel gyral landmarks in developing macaque brains

Cerebral cortex development undergoes a variety of processes, which provide valuable information for the study of the developmental mechanism of cortical folding as well as its relationship to brain structural architectures and brain functions. Despite the variability in the anatomy–function relationship on the higher‐order cortex, recent studies have succeeded in identifying typical cortical landmarks, such as sulcal pits, that bestow specific functional and cognitive patterns and remain invariant across subjects and ages with their invariance being related to a gene‐mediated proto‐map. Inspired by the success of these studies, we aim in this study at defining and identifying novel cortical landmarks, termed gyral peaks, which are the local highest foci on gyri. By analyzing data from 156 MRI scans of 32 macaque monkeys with the age spanned from 0 to 36 months, we identified 39 and 37 gyral peaks on the left and right hemispheres, respectively. Our investigation suggests that these gyral peaks are spatially consistent across individuals and relatively stable within the age range of this dataset. Moreover, compared with other gyri, gyral peaks have a thicker cortex, higher mean curvature, more pronounced hub‐like features in structural connective networks, and are closer to the borders of structural connectivity‐based cortical parcellations. The spatial distribution of gyral peaks was shown to correlate with that of other cortical landmarks, including sulcal pits. These results provide insights into the spatial arrangement and temporal development of gyral peaks as well as their relation to brain structure and function.

We defined and identified novel cortical landmarks, termed gyral peaks, which are the local highest foci on gyri. Our investigation suggests that gyral peaks are spatially consistent across individuals and relatively stable within the age range of this dataset.     

DSA引导下血管腔内成形术治疗下肢动脉硬化闭塞症的临床研究

目的:探讨DSA引导下血管腔内成形术(TA)治疗下肢动脉硬化闭塞症(ASO-LE)的临床效果.方法:2017年3月至2019年4月,手术治疗的ASO-LE患者93例,依据治疗方式的不同分为A组(行TA,=49)和B组[行下肢动脉旁路移植术(LEABG),=44],两组患者均在数字减影血管造影(DSA)引导下进行.对比两...     

白及多糖超声提取工艺及其抗氧化活性研究

目的：优化白及多糖的超声提取工艺,比较不同产地白及多糖含量差异,考察白及多糖稳定性和抗氧化活性。方法：以多糖得率为考察指标,料液比、超声温度、超声时间为考察因素设计L9（34）正交试验优化白及多糖超声波提取工艺;以苯酚-硫酸法测定白及多糖含量,考察陕西汉中、云南普洱、湖南洪江及四川绵阳白及多糖含量产地差异;以化学方法考察白及多糖稳定性,并比较白及多糖对1,1-二苯基-2-苦肼基自由基（DPPH·）和羟基自由基（·OH）的清除率以评价其体外抗氧化活性。结果：最佳超声提取工艺条件为：料液比1:25（g/mL）、超声温度80 ℃、超声时间10 min;四川绵阳白及多糖含量最高,达到60.81%,湖南洪江次之,云南普洱最低;白及多糖在柠檬酸及中性溶液中的稳定性较好,在苯甲酸钠、过酸性或过碱性溶液中的稳定性较差;白及多糖能有效地清除DPPH和羟基自由基,具有潜在的体外抗氧化活性。结论：白及多糖超声波提取工艺的优化及其抗氧化活性研究,可为白及多糖提取及综合利用提供借鉴。     

贝伐单抗联合全视网膜光凝治疗增生型糖尿病视网膜病变的疗效观察

目的　检测贝伐单抗玻璃体内注射疗法（ｂｅｖａｃｉｚｕｍａｂｉｎｊｅｃｔｉｏｎｓｉｎｖｉｔｒｅｏｕｓ,ＩＶＢ）对增生型糖尿病视网膜病变（ｐｒｏｌｉｆｅｒａ-ｔｉｖｅｄｉａｂｅｔｉｃｒｅｔｉｎｏｐａｔｈｙ,ＰＤＲ）中视网膜新生血管（ｒｅｔｉｎａｌｎｅｏｖａｓｃｕｌａｒｉｚａｔｉｏｎ,ＲＮＶ）的消退作用;评估ＩＶＢ联合全视网膜光凝（ｐａｎ-ｒｅｎｔｉｎａｌｐｈｏｔｏｃｏａｇｕｌａｔｉｏｎ,ＰＲＰ）对ＰＤＲ的临床疗效和安全性。方法　本研究收集行ＰＲＰ的ＰＤＲ患者７２例（７２眼）,根据术前是否ＩＶＢ分为注射组和对照组,注射组在完成ＩＶＢ１．２５ｍｇ后第７天行眼底荧光血管造影（ｆｕｎｄｕｓｆｌｕｏｒｅｓｃｅｉｎａｎｇｉｏｇｒａｐｈｙ,ＦＦＡ）检查,并于当天开始第一个象限的ＰＲＰ,每周１次,共４次完成ＰＲＰ;对照组每周１次,共４次完成ＰＲＰ。两组患者均于ＰＲＰ后４周、８周、１２周复诊,并复查最佳矫正视力（ｂｅｓｔｃｏｒｒｅｃｔｅｄｖｉｓｕａｌａｃｕｉｔｙ,ＢＣＶＡ）、眼压、ＦＦＡ、光学相干断层扫描、眼前节及眼底。结果　注射组ＩＶＢ后１周,ＢＣＶＡ提高,ＲＮＶ渗漏面积减少,与治疗前差异有统计学意义（Ｐ＜０．０５）;注射组各时间点ＢＣＶＡ、ＲＮＶ消退情况均显著优于对照组（均为Ｐ＜０．０５）。注射组各时间点黄斑中心凹视网膜厚度均较治疗前显著下降（均为Ｐ＜０．０５）,对照组各时间点黄斑中心凹视网膜厚度均较治疗前显著降低（均为Ｐ＜０．０５）,两组之间各时间点比较,差异均无统计学意义（均为Ｐ＞０．０５）。结论　ＰＲＰ能延迟单纯ＩＶＢ后ＲＮＶ的复发;联合治疗可更有效地推动ＰＤＲ中ＲＮＶ消退,安全可靠,可以更好地保护患者的视觉功能。