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Pathogenesis of Demyelinating Encephalopathy in Dogs with Spontaneous Acute Canine Distemper

Journal of Integrative Agriculture 2013年第2期12卷 334-343页

作者： PAN Yao-qian LIU Xing-you MENG Li-ping ZHU Guang-rui xia yin-ke CHEN Jin-shan Yoshikawa Takashi Department of Veterinary Pathology College of Animal Sciences Henan Institute of Science and Technology Department of Microbiology and Immunology Northwestern University Feinberg Medical School Department of Veterinary Pathology School of Veterinary Medicine and Animal Science Kitasato University

So far, the pathogenesis of demyelination caused by canine distemper virus （CDV） in the central nervous system has remained unclear, although a lot of studies have been done extensively. To further investigate the relation of variety cells in brain to demyelination, this study was performed on 15 dogs with spontaneous acute canine distemper and 2 controls. According to anatomical relation, the brain was divided into cerebrum, cerebral stem and cerebellum. The sections with no, mild, moderate, or severe demyelinating lesions were selected respectively and stained by HE and immunohistochemistry. Immuno-localisation of CDV antigen was used to conftrm CDV infection. The brain was examined for co-localisation of the CDV antigen with either an astrocyte-specific marker, glial fibrillary acidic protein （GFAP）, or an oligodendrocyte-specific marker, galactocerebroside （GalC）. Apoptotic cell was detected by TdT-mediated nick end-labeling assay （TUNEL）. The results demonstrated that the local disturbance of blood circulation mainly included congestion, edema, thrombosis, and disseminated intravascular coagulation （DIC）. The CDV neucleocapsid protein positive reaction, metabolic disorder and apoptosis of oligodendrocytes were observed in demyelinating areas. Lots of astrocytes displayed CDV antigen-positive, especially in their process. Some of them became apoptotic cell confirmed by TUNEL staining. Fibrous astrocytes showed more intense GFAP-positive in mild and moderate demyelinating area. Some of nervous cells located in pyramidal cell layers and nucleus nervi were in degeneration, necrosis. Satellitosis, neuronophagia and apoptotic neurons were examined by hematoxylin and eosin （HE） and TUNEL staining. The results suggested that the demyelinating changes in brain tissues infected with CDV mainly related to the metabolic disorder and apoptosis of ogliodendrocytes and astrocytes; also involved with the local disturbance of blood circulation and some neuron lost.

关键词： acute canine distemper demyelinating encephalopathy oligodendrocyte astrocyte apoptosis

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Pathomorphologic Study of Parasitic Enteritis Caused by Acute Canine Distemper

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Animal Husbandry and Feed Science 2012年第2期4卷 68-71页

作者： PAN Yao-qian ,LIU Xing-you,CHEN Jin-shan,yin Mei,TANG Hai-rong,ZHU Guang-rui,xia yin-ke College of Animal Science,Henan Institute of Science and Technology,Xinxiang 453003,China

[Objective]The aim was to survey relationship between acute canine distemper and parasitic enteritis from pathology. [Method]Twelve cases of acute canine distemper with diarrhea were researched as per immunohistochemistry,Haematoxylin Eosin,and PAS staining kit. [Result] Of the twelve diseased dogs （ with diarrhea） ,six were detected caused by coccidium and two were detected by cryptosporidium. Coccidian protozoa is mainly in epithelial cells of jejunum and ileum,and some can be found in cut-off intestinal epithelial cells and in mucus formed by destroyed intesti- nal villus. The most common shapes of coccidian protozoa are trophozoite and schizont. The former is mainly within or among epithelial cells; nucle- us is in center and stained by hematoxylin; protoplasm is in ＂ fined mesh＂ shape. The latter,round or oval,contains much glycogenosome in de- generated intestinal epithelial cells. On the other hand,cryptosporidium is mainly in striated borders of intestinal epithelial cells and intestinal gland cells,leading to destruction of villus and cut-off of cells. Through detection on monoclonal antibody of nucleocapsid proteins of anti-canine distemper virus,it was found that epithelial cells in intestinal mucosa,glandular cells in recesses,lymphocytes and macrophage infittrated in lamina propria and dendritic cells in aggregated nodule were all with positive reactions. [Conclusion]Parasitic diarrhea caused by acute canine distemper occurs when resistance of intestinal mucosa caused by canine distemper virus begins to decline.

关键词： Acute canine distemper Coccidiosis Cryptosporidiosis Histopathology

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Actively tunable electromagnetically induced transparency in hybrid Dirac-VO2 metamaterials

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Optoelectronics Letters 2025年第1期21卷 13-20页

作者： DI ke XIE Meng xia Huarong CHENG Anyu LIU Yu DU Jiajia Department of Optoelectronic Engineering Chongqing University of Post and Telecommunications Chongqing key Laboratory of Autonomous Navigation and Microsystem Chongqing University of Posts and Telecommunications Department of Automation Chongqing University of Post and Telecommunications

In this paper, we present a metamaterial structure of Dirac and vanadium dioxide（VO2） and investigate its optical properties using the finite-difference time-domain（FDTD） technique. Using the phase transition feature of VO2, the design can realize active tuning of the plasmon induced transparency（PIT） effect at terahertz frequency, thereby converting from a single PIT to a double-PIT. When VO2is in the insulating state, the structure is symmetric to obtain a single-band PIT effect. When VO2is in the metallic state, the structure turns asymmetric to realize a dual-band PIT effect. This design provides a reference direction for the design of actively tunable metamaterials. Additionally, it is discovered that the transparent window's resonant frequency and the Fermi level in this structure have a somewhat linear relationship. In addition, the structure achieves superior refractive index sensitivity in the terahertz band, surpassing 1 THz/RIU. Consequently, the design exhibits encouraging potential for application in refractive index sensors and optical switches.

关键词： Transparency

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The complex roles of m^(6)A modifications in neural stem cell proliferation, differentiation, and self-renewal and implications for memory and neurodegenerative diseases

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Neural Regeneration Research 2025年第6期20卷 1582-1598页

作者： Yanxi Li Jing Xue Yuejia Ma ke Ye Xue Zhao Fangliang Ge Feifei Zheng Lulu Liu Xu Gao Dayong Wang Qing xia Department of Biochemistry and Molecular Biology College of Basic Medical SciencesHarbin Medical UniversityHarbinHeilongjiang ProvinceChina College of Basic Medical Sciences Harbin Medical UniversityHarbinHeilongjiang ProvinceChina Basic Medical Institute Heilongjiang Academy of Medical SciencesHarbinHeilongjiang ProvinceChina key Laboratory of Heilongjiang Province for Genetically Modified Animals Harbin Medical UniversityHarbinHeilongjiang ProvinceChina Translational Medicine Research and Cooperation Center of Northern China Heilongjiang Academy of Medical SciencesHarbinHeilongjiang ProvinceChina Dongzhimen Hospital Beijing University of Chinese MedicineBeijingChina

N6-methyladenosine(m^(6)A), the most prevalent and conserved RNA modification in eukaryotic cells, profoundly influences virtually all aspects of mRNA metabolism. mRNA plays crucial roles in neural stem cell genesis and neural regeneration, where it is highly concentrated and actively involved in these processes. Changes in m^(6)A modification levels and the expression levels of related enzymatic proteins can lead to neurological dysfunction and contribute to the development of neurological diseases. Furthermore, the proliferation and differentiation of neural stem cells, as well as nerve regeneration, are intimately linked to memory function and neurodegenerative diseases. This paper presents a comprehensive review of the roles of m^(6)A in neural stem cell proliferation, differentiation, and self-renewal, as well as its implications in memory and neurodegenerative diseases. m^(6)A has demonstrated divergent effects on the proliferation and differentiation of neural stem cells. These observed contradictions may arise from the time-specific nature of m^(6)A and its differential impact on neural stem cells across various stages of development. Similarly, the diverse effects of m^(6)A on distinct types of memory could be attributed to the involvement of specific brain regions in memory formation and recall. Inconsistencies in m^(6)A levels across different models of neurodegenerative disease, particularly Alzheimer's disease and Parkinson's disease, suggest that these disparities are linked to variations in the affected brain regions. Notably, the opposing changes in m^(6)A levels observed in Parkinson's disease models exposed to manganese compared to normal Parkinson's disease models further underscore the complexity of m^(6)A's role in neurodegenerative processes. The roles of m^(6)A in neural stem cell proliferation, differentiation, and self-renewal, and its implications in memory and neurodegenerative diseases, appear contradictory. These inconsistencies may be a

关键词： Alzheimer's disease cell self-renewal central nervous system memory microglia nerve regeneration neurodegenerative diseases neurogenesis RNA methylation

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鸡传染性支气管病毒ZZ2004株致SPF感染鸡小肠损伤的病理与超微病变研究

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中国预防兽医学报 2012年第11期34卷 859-863页

作者：朱广蕊潘耀谦夏银可银梅唐海蓉刘兴友河南科技学院河南新乡453003 动物疫病和残留物防控河南省高校工程技术研究中心河南新乡453003 动物病毒病防控与药残分析河南省高校重点学科开放实验室河南新乡453003

为研究鸡传染性支气管炎病毒(IBV)ZZ2004株引起鸡生长缓慢的发病机理,本实验将100只7日龄SPF雏鸡平均分为两组。实验组经口服病毒进行感染,对照组口服生理盐水,通过临床检查、病理学检查及超微病变观察进行研究。病理解剖学检查表明,实... 详细信息

为研究鸡传染性支气管炎病毒(IBV)ZZ2004株引起鸡生长缓慢的发病机理,本实验将100只7日龄SPF雏鸡平均分为两组。实验组经口服病毒进行感染,对照组口服生理盐水,通过临床检查、病理学检查及超微病变观察进行研究。病理解剖学检查表明,实验组鸡各肠段有不同程度卡他性出血性炎性变化。病理组织学显示,小肠绒毛变短,上皮细胞脱落,固有层内炎性细胞增多。扫描电镜观察表明,肠绒毛的游离端常断裂,固有层裸露,在肠上皮细胞之间有大量杯状细胞的开口,并见大块状的分泌物渗出。透射电镜检查显示,残存的肠上皮细胞的微绒毛严重破坏;粗面内质网脱颗粒,滑面内质网明显扩张,呈囊状或泡状,在内质网中出现大量病毒颗粒;核周隙扩张,在核质中能够检出成熟的病毒颗粒。本研究结果表明:IBV ZZ2004株可以在肠上皮细胞中增殖,引起肠的吸收上皮和肠绒毛的一系列退行性病变,从而导致感染鸡代谢障碍,生长缓慢。

关键词：鸡传染性支气管炎病毒 SPF鸡肠道病理

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甲型H1N1流感病毒致病机理研究进展

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动物医学进展 2011年第8期32卷 70-74页

作者：朱广蕊潘耀谦夏银可刘兴友河南科技学院动物科学学院河南新乡453003

本世纪首次暴发的甲型H1N1流感大流行,严重威胁了人和动物的健康,是其继1918年对全球进行疯狂肆虐之后的又一次严重打击。甲型H1N1流感病毒的主要蛋白结构包括血凝素蛋白(HA)、神经氨酸酶蛋白(NA)、聚合酶复合体(PB1、PB2和PA)、核蛋白(... 详细信息

本世纪首次暴发的甲型H1N1流感大流行,严重威胁了人和动物的健康,是其继1918年对全球进行疯狂肆虐之后的又一次严重打击。甲型H1N1流感病毒的主要蛋白结构包括血凝素蛋白(HA)、神经氨酸酶蛋白(NA)、聚合酶复合体(PB1、PB2和PA)、核蛋白(NP)、基质蛋白(M1、M2)及非结构蛋白(NS1、NS2)等。目前研究表明,与甲型H1N1流感病毒致病机理相关的蛋白主要有HA、NA、PB1、PB2、NP和NS1,其编码基因结构的变化可能会造成致病力的改变和新一轮的流感大流行。另外,细胞因子也参与了甲型H1N1流感病毒的致病过程。因此,搞清楚该病毒的致病机理就显得尤为重要,论文对其研究进展进行了综述。

关键词：甲型H1N1流感病原学分子结构致病机理

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3D Printing of Tough Hydrogel Scaffolds with Functional Surface Structures for Tissue Regeneration

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Nano-Micro Letters 2025年第2期17卷 18-45页

作者： ke Yao Gaoying Hong Ximin Yuan Weicheng Kong Pengcheng xia Yuanrong Li Yuewei Chen Nian Liu Jing He Jue Shi Zihe Hu Yanyan Zhou Zhijian Xie Yong He State key Laboratory of Fluid Power and Mechatronic Systems School of Mechanical EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China Liangzhu Laboratory Zhejiang UniversityHangzhou 310027People’s Republic of China key Laboratory of 3D Printing Process and Equipment of Zhejiang Province College of Mechanical EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China Stomatology Hospital School of StomatologyZhejiang University School of MedicineHangzhou 310027People’s Republic of China State key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150001People’s Republic of China Institute of Digital Medicine Nanjing First HospitalNanjing Medical UniversityNanjing 210006People’s Republic of China

Hydrogel scaffolds have numerous potential applications in the tissue engineering ***,tough hydrogel scaffolds implanted in vivo are seldom reported because it is difficult to balance biocompatibility and high mechanical *** by Chinese ramen,we propose a universal fabricating method(printing-P,training-T,cross-linking-C,PTC&PCT)for tough hydrogel scaffolds to fill this ***,3D printing fabricates a hydrogel scaffold with desired structures(P).Then,the scaffold could have extraordinarily high mechanical properties and functional surface structure by cycle mechanical training with salting-out assistance(T).Finally,the training results are fixed by photo-cross-linking processing(C).The tough gelatin hydrogel scaffolds exhibit excellent tensile strength of 6.66 MPa(622-fold untreated)and have excellent ***,this scaffold possesses functional surface structures from nanometer to micron to millimeter,which can efficiently induce directional cell ***,this strategy can produce bionic human tissue with mechanical properties of 10 kPa-10 MPa by changing the type of salt,and many hydrogels,such as gelatin and silk,could be improved with PTC or PCT *** experiments show that this scaffold can effectively promote the new generation of muscle fibers,blood vessels,and nerves within 4 weeks,prompting the rapid regeneration of large-volume muscle loss injuries.

关键词： 3D printing Tough hydrogel scaffold Functional surface structure Tissue regeneration Biomaterials

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慢性乙型肝炎合并代谢相关脂肪性肝病的研究进展

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临床肝胆病杂志 2025年第12期40卷 2499-2504页

作者：殷珂宋玉芸刘峰北京大学人民医院北京大学肝病研究所丙型肝炎和肝病免疫治疗北京市重点实验室非酒精性脂肪性肝病诊断北京市国际科技合作基地北京 100044

慢性乙型肝炎（CHB）和脂肪肝是我国常见的慢性肝脏疾病，随着生活方式的改变，CHB合并代谢相关脂肪性肝病的患者逐年增加，两种疾病均存在肝硬化、肝细胞癌（HCC）等不良事件发生的风险。二者共存时肝脏的病理生理学进程与单独的疾病... 详细信息

慢性乙型肝炎（CHB）和脂肪肝是我国常见的慢性肝脏疾病，随着生活方式的改变，CHB合并代谢相关脂肪性肝病的患者逐年增加，两种疾病均存在肝硬化、肝细胞癌（HCC）等不良事件发生的风险。二者共存时肝脏的病理生理学进程与单独的疾病状态可能不同，进而存在HBV的复制，HBsAg的血清学清除及抗病毒治疗受到影响，肝纤维化、HCC等不良事件风险增加的问题，故明确这些问题会对此类患者疾病的监测、治疗及预后有重要意义，本文将对这些问题的最新研究进展进行简要综述。

关键词：乙型肝炎, 慢性乙型肝炎病毒脂肪肝

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豆状囊尾蚴的超微结构观察

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畜牧兽医学报 2012年第4期43卷 653-658页

作者：潘耀谦刘兴友赵振升陈金山张慧蓉朱广蕊夏银可银梅唐海蓉河南科技学院动物科学学院新乡453003 河南科技大学动物科技学院洛阳453007

本研究旨在观察豆状囊尾蚴在不同状态下的超微结构。从肉联厂屠宰检验采取豆状囊尾蚴,直接剪破囊泡从中取出豆状囊尾蚴;或用含10%胆汁生理盐水培养囊尾蚴,待其从囊泡中翻出后,用扫描电镜观察和记录。位于囊泡内的头节,从其顶端观察,顶... 详细信息

本研究旨在观察豆状囊尾蚴在不同状态下的超微结构。从肉联厂屠宰检验采取豆状囊尾蚴,直接剪破囊泡从中取出豆状囊尾蚴;或用含10%胆汁生理盐水培养囊尾蚴,待其从囊泡中翻出后,用扫描电镜观察和记录。位于囊泡内的头节,从其顶端观察,顶突呈伞状,皮肌柱连接小钩覆盖于头节的前端。从侧面观察,一排有鹿角样的小钩附着于顶突。4个吸盘呈洞穴状位于顶突之后分布在头节的四周。原始颈节较宽,体节较细,表面均有许多皱褶。培养后的豆状囊尾蚴可明显区分为头节、颈节、体节和囊泡区,顶突上的皮肌柱收缩,鹿角样的小钩向周围伸展,吸盘也发生环形和纵形收缩,颈节的环状收缩和体节的纵行收缩均明显可辨。豆状囊尾蚴处于不同状态时,其超微结构明显不同。

关键词：豆状囊尾蚴超微结构顶突吸盘扫描电镜

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脑炎原虫病兔免疫器官的病理形态学观察

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动物医学进展 2012年第3期33卷 58-62页

作者：潘耀谦刘兴友赵振升陈金山银梅唐海蓉朱广蕊夏银可河南科技学院动物科学学院河南新乡453003 动物疫病和残留物防控河南省高校工程技术研究中心河南新乡453003 河南科技大学动物科技学院河南洛阳453007

研究脑炎原虫病兔外周免疫器官的形态学变化,采集20只病兔和12只对照兔的淋巴结、脾脏和圆小囊,通过临床检查,病理剖检,病理切片的HE染色、吉姆萨染色和免疫组织化学染色进行了比较观察。结果表明病兔淋巴结内的淋巴小结数量增多,生发... 详细信息

研究脑炎原虫病兔外周免疫器官的形态学变化,采集20只病兔和12只对照兔的淋巴结、脾脏和圆小囊,通过临床检查,病理剖检,病理切片的HE染色、吉姆萨染色和免疫组织化学染色进行了比较观察。结果表明病兔淋巴结内的淋巴小结数量增多,生发中心明显,髓索增粗,副皮质区增宽。脾脏的脾小结增多,变大,具有明显的生发中心,边缘区明显增宽,动脉周围淋巴鞘明显变大,聚集大量淋巴细胞。圆小囊的淋巴小结增大,数量增多,生发中心明显,淋巴小结周围弥散大量淋巴细胞。通过α-ANAE和sABC染色,在淋巴结、脾脏和圆小囊中均可检出大量T细胞、巨噬细胞和IgG阳性细胞。据此认为患脑炎原虫病时,病兔的体液免疫和细胞免疫均增强,但以细胞免疫反应更强。

关键词：兔脑炎原虫免疫器官细胞免疫体液免疫

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