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Engeletin ameliorates sevoflurane-induced cognitive impairment by activating PPAR-gamma in neonatal mice. eneletin通过激活新生小鼠ppar - γ改善七氟醚诱导的认知障碍。
IF 2.3 4区 医学 Q2 Medicine Pub Date : 2023-12-01 Epub Date: 2023-04-10 DOI: 10.1111/neup.12905
Su Jiang, Ying Xiong, Xinyan Wang

Sevoflurane (SEV) is a commonly used anesthetic in pediatric surgery. Recent studies reported that repeated use of SEV contributes to cognitive impairment. Engeletin has been discovered to exert anti-inflammatory effects in various diseases. However, the detailed roles and mechanisms of engeletin in SEV-induced cognitive dysfunction of neonatal mice remain unclear. In this study, C57BL/6 neonatal mice were randomly divided into Ctrl, SEV, SEV + Engeletin (10 mg /kg), SEV + Engeletin (20 mg/kg), and SEV + Engeletin (40 mg/kg) groups. The Morris water maze (MWM) test suggested that engeletin treatment significantly improved SEV-induced cognitive impairment in neonatal mice. Employing ELISA and Nissl staining analysis, engeletin reduced neuroinflammation and loss of nerve cells caused by SEV, respectively. The treatment of engeletin dramatically suppressed the activation of microglia and apoptosis induced by SEV in the hippocampus of neonatal mice. Furthermore, the inhibition of PPAR-γ obviously reversed the abovementioned effects of engeletin in the hippocampus of newborn mice. In conclusion, this study verified that engeletin notably ameliorated SEV-induced cognitive deficiencies in neonatal mice at least partially by mediating the expression of PPAR-γ.

七氟醚(SEV)是儿科手术中常用的麻醉剂。最近的研究报道,反复使用SEV会导致认知障碍。恩格列素已被发现对多种疾病有抗炎作用。然而,eneletin在sev诱导的新生小鼠认知功能障碍中的具体作用和机制尚不清楚。将C57BL/6新生小鼠随机分为Ctrl组、SEV组、SEV + Engeletin组(10 mg/kg)、SEV + Engeletin组(20 mg/kg)和SEV + Engeletin组(40 mg/kg)。Morris水迷宫(MWM)实验表明,engeletin治疗可显著改善sev诱导的新生小鼠认知功能障碍。ELISA和尼氏染色分析显示,恩格莱素分别减少了SEV引起的神经炎症和神经细胞损失。恩格列素处理可显著抑制SEV诱导的新生小鼠海马小胶质细胞的活化和凋亡。此外,抑制PPAR-γ明显逆转了新生小鼠海马中engeletin的上述作用。总之,本研究证实,eneletin至少部分通过介导PPAR-γ的表达,显著改善了sev诱导的新生小鼠认知缺陷。
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引用次数: 0
MYCN amplification in spinal ependymoma: A five-year retrospective study. 脊髓室管膜瘤中MYCN扩增:一项五年回顾性研究。
IF 2.3 4区 医学 Q2 Medicine Pub Date : 2023-12-01 Epub Date: 2023-05-23 DOI: 10.1111/neup.12912
Shilpa Rao, Harsha Sugur, Subhas Konar, Arimappamagan Arivazhagan, Vani Santosh

Spinal ependymoma with MYCN amplification is a newly recognized type of spinal ependymoma that is known to be associated with poor prognosis. Available studies on this relatively rare tumor type have observed that these tumors tend to disseminate along the spinal cord and behave aggressively with worse overall and progression-free survival compared to the other types of ependymoma. In this study, we describe the clinical and histopathological features of spinal ependymomas in a single institution cohort with emphasis on those with MYCN amplification.

伴MYCN扩增的脊髓室管膜瘤是一种新发现的与预后不良相关的脊髓室管膜瘤。对这种相对罕见的肿瘤类型的现有研究已经观察到,与其他类型的室管膜瘤相比,这些肿瘤倾向于沿脊髓扩散,具有侵袭性,总体生存率和无进展生存率较差。在这项研究中,我们在单一机构队列中描述了脊髓室管膜瘤的临床和组织病理学特征,重点是MYCN扩增的患者。
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引用次数: 1
V180I genetic Creutzfeldt-Jakob disease: Severe degeneration of the inferior olivary nucleus in an autopsied patient with identification of the M2T prion strain. V180I遗传性克雅氏病:尸检患者下橄榄核严重变性,鉴定出M2T朊病毒株。
IF 2.3 4区 医学 Q2 Medicine Pub Date : 2023-12-01 Epub Date: 2023-05-10 DOI: 10.1111/neup.12908
Midori Watanabe, Kosei Nakamura, Rie Saito, Atsuko Takeuchi, Tetsuya Takahashi, Tetsuyuki Kitamoto, Osamu Onodera, Akiyoshi Kakita

Genetic Creutzfeldt-Jakob disease (gCJD) with a V180I mutation (V180I gCJD) is the most common type of gCJD in Japan, characterized by an older age at onset, slower progression, and moderate to severe cortical degeneration with spongiform changes and sparing of the brainstem and cerebellum. Degeneration of the inferior olivary nucleus (IO) is rarely observed in patients with CJD but is known to occur in fatal familial insomnia (FFI) and MM2-thalamic-type sporadic CJD (sCJD-MM2T) involving type 2 prion protein (M2T prion). Here we report on an 81-year-old Japanese woman who initially developed depressive symptoms followed by progressive cognitive impairment, myoclonus, and hallucinations and died after a clinical course of 23 months. Insomnia was not evident. Genetic analysis of the prion protein (PrP) identified a V180I mutation with methionine/valine heterozygosity at codon 129. Pathologic analysis demonstrated extensive spongiform degeneration, neuronal loss in the cortices, and weak synaptic-type PrP deposition. Except for IO degeneration, the clinicopathologic features and Western blotting PrP band pattern were compatible with those of previously reported V180I gCJD cases. Quantitative analysis revealed that the neuronal density of the IO, especially in the dorsal area, was considerably reduced to the same extent as that of a patient with sCJD-MM2T but preserved in other patients with V180I gCJD and sCJD-MM1 (this patient, 2.3 ± 0.53/mm2 ; a patient with sCJD-MM2T, 4.2 ± 2; a patient with V180I gCJD, 60.5 ± 9.3; and a patient with sCJD-MM1, 84.5 ± 17.9). Use of the protein misfolding cyclic amplification (PMCA) method confirmed the presence of the M2T prion strain, suggesting that the latter might be associated with IO degeneration in V180I gCJD. Autopsy studies are necessary to better understand the nature of CJD, since even if patients present with the common clinical picture, pathologic analysis might provide new insights, as was the case here.

遗传性克雅氏病(gCJD)伴V180I突变(V180I gCJD)是日本最常见的gCJD类型,其特点是发病年龄较大,进展较慢,中度至重度皮质变性伴海绵状改变,脑干和小脑保留。下榄核(IO)变性在CJD患者中很少观察到,但已知发生在致命性家族性失眠症(FFI)和mm2 -地中海型散发性CJD (sCJD-MM2T)中,涉及2型朊病毒蛋白(M2T朊病毒)。在此,我们报告了一位81岁的日本女性,她最初出现抑郁症状,随后出现进行性认知障碍、肌阵挛和幻觉,并在临床病程23个月后死亡。失眠不明显。朊病毒蛋白(PrP)的遗传分析发现V180I突变在密码子129处具有蛋氨酸/缬氨酸杂合性。病理分析显示广泛的海绵状变性,皮层神经元丢失和弱突触型PrP沉积。除IO变性外,临床病理特征及Western blotting PrP条带图与文献报道的V180I型gCJD一致。定量分析显示,与sCJD-MM2T患者相比,脊髓IO的神经元密度明显降低,特别是在背侧区域,但与其他V180I gCJD和sCJD-MM1患者相比,神经元密度有所降低(该患者,2.3±0.53/mm2;1例sCJD-MM2T, 4.2±2;1例V180I型gCJD, 60.5±9.3;1例sCJD-MM1(84.5±17.9)。利用蛋白错误折叠循环扩增(PMCA)方法证实了M2T朊病毒株的存在,提示后者可能与V180I型gCJD的IO变性有关。解剖研究对于更好地了解CJD的本质是必要的,因为即使患者表现出共同的临床症状,病理分析也可能提供新的见解,就像这里的情况一样。
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引用次数: 0
Pituitary tuberculoma with panhypopituitarism masquerading as a pituitary adenoma. 垂体结核瘤伴全垂体功能减退,伪装成垂体腺瘤。
IF 2.3 4区 医学 Q2 Medicine Pub Date : 2023-12-01 Epub Date: 2023-05-30 DOI: 10.1111/neup.12925
Adil Aziz Khan, Sana Ahuja, Shaivy Malik, Saba Naaz, Sufian Zaheer

Tuberculosis of the hypothalamo-pituitary axis is extremely uncommon. The presentation of panhypopituitarism in a case of sellar tuberculosis is an even rarer occurrence. We present a case of a 44-year-old man who presented with complaints of headache and right-sided diminution of vision for six months. A hormone profile showed abnormal anterior pituitary assay suggestive of panhypopituitarism. Magnetic Resonance imaging of the brain showed a sellar mass measuring 1.8 × 1.5 × 1.3 cm with suprasellar extension suggestive of a pituitary adenoma. Histopathological examination showed multiple epithelioid cell granulomas along with Langhans giant cells and mixed inflammatory infiltrates against a necrotic background. Zeihl Neelson stain demonstrated the presence of acid-fast bacilli. Thus, a final diagnosis of pituitary tuberculoma was made, and the patient started on antitubercular therapy. It is extremely important to correctly diagnose sellar tuberculosis as the treatment is entirely different, and the patient usually responds well to therapy.

下丘脑-垂体轴结核极为罕见。全垂体功能减退的表现在一个病例的卖方结核是一个更罕见的发生。我们提出一个44岁的男子谁提出投诉头痛和右侧视力下降六个月。激素谱显示垂体前叶检测异常提示全垂体功能低下。脑磁共振成像显示鞍区肿块,尺寸为1.8 × 1.5 × 1.3 cm,鞍上延伸提示垂体腺瘤。组织病理学检查显示坏死背景下多发上皮样细胞肉芽肿伴朗汉斯巨细胞及混合性炎性浸润。Zeihl - Neelson染色显示有抗酸杆菌。因此,最终诊断为垂体结核瘤,患者开始接受抗结核治疗。正确诊断鞍区结核是非常重要的,因为治疗方法完全不同,患者通常对治疗反应良好。
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引用次数: 0
A rare case of primary neuroendocrine carcinoma of the central nervous system. 中枢神经系统原发性神经内分泌癌的罕见病例。
IF 2.3 4区 医学 Q2 Medicine Pub Date : 2023-10-01 Epub Date: 2023-04-03 DOI: 10.1111/neup.12904
Adil Aziz Khan, Sana Ahuja, Sufian Zaheer

Primary neuroendocrine carcinoma (NEC) of the brain is an extremely rare presentation, with only a few previous case reports. We describe a primary NEC arising from the left parieto-occipital lobe. The 55-year-old patient presented with complaints of headache and dizziness for the preceding 7 months. Magnetic resonance imaging revealed a large ill-defined mass in the left parieto-occipital lobe, with possible differential diagnosis of meningioma. A craniotomy was performed, and a firm vascular tumor was removed. Histopathological examination revealed a large cell NEC. Immunohistochemistry was performed to exclude the possibility of an extracranial primary. Based on the immunohistochemical expression and absence of any extracranial tumor on positron emission tomography, the diagnosis of primary NEC of the brain was made. It is important to differentiate between primary and metastatic neuroendocrine tumors because they show a significant difference in prognosis and treatment.

原发性脑神经内分泌癌(NEC)是一种极为罕见的表现,以前只有少数病例报告。我们描述了由左顶枕叶引起的原发性NEC。55岁的患者在前7天出现头痛和头晕的症状 月。磁共振成像显示左侧顶枕叶有一个不明确的大肿块,可能是脑膜瘤的鉴别诊断。进行了开颅手术,切除了一个坚固的血管肿瘤。组织病理学检查显示有大细胞NEC。进行免疫组化以排除颅外原发性的可能性。根据免疫组织化学的表达和正电子发射断层扫描上没有任何颅外肿瘤,诊断为原发性脑NEC。区分原发性和转移性神经内分泌肿瘤很重要,因为它们在预后和治疗方面有显著差异。
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引用次数: 0
Myopathic changes caused by protein aggregates in adult-onset spinal muscular atrophy. 成人发作性脊髓性肌萎缩中蛋白质聚集体引起的肌病变。
IF 2.3 4区 医学 Q2 Medicine Pub Date : 2023-10-01 Epub Date: 2023-03-02 DOI: 10.1111/neup.12901
Satoshi Yamashita, Akihito Nagatoshi, Yosuke Takeuchi, Ichizo Nishino, Mitsuharu Ueda

Spinal muscular atrophy (SMA), an autosomal-recessive lower motor neuron disease, causes progressive proximal muscle waste and weakness. It remains unclear whether myopathic changes are involved in pathogenesis. We encountered a patient with adult-onset SMA caused by a homozygous deletion in exon 7 of the survival motor neuron 1 (SMN1) gene who had had four copies of SMN2 exon 7. Muscle biopsy showed neurogenic features of groups of atrophic fibers, fiber-type grouping, and pyknotic nuclear clumps associated with fibers with rimmed vacuoles. Immunohistochemistry revealed sarcoplasmic aggregates of phosphorylated TDP-43 and p62 but not SMN. This study demonstrated myopathic changes with the accumulation of phosphorylated p62 and TDP-43 in the muscles of a patient with SMA, suggesting that abnormal protein aggregation may be involved in myopathic pathology.

脊髓性肌萎缩(SMA)是一种常染色体隐性下运动神经元疾病,可导致进行性近端肌肉浪费和无力。目前尚不清楚肌病的变化是否与发病机制有关。我们遇到了一名成年发作性SMA患者,该患者由存活运动神经元1(SMN1)基因外显子7的纯合缺失引起,该患者具有四个拷贝的SMN2外显子。肌肉活检显示萎缩纤维组的神经源性特征,纤维类型分组,与带边框液泡的纤维相关的固缩性核团。免疫组织化学显示磷酸化TDP-43和p62的肌浆聚集体,但不显示SMN。这项研究表明,SMA患者肌肉中磷酸化p62和TDP-43的积累引起了肌病的变化,这表明异常的蛋白质聚集可能与肌病病理有关。
{"title":"Myopathic changes caused by protein aggregates in adult-onset spinal muscular atrophy.","authors":"Satoshi Yamashita,&nbsp;Akihito Nagatoshi,&nbsp;Yosuke Takeuchi,&nbsp;Ichizo Nishino,&nbsp;Mitsuharu Ueda","doi":"10.1111/neup.12901","DOIUrl":"10.1111/neup.12901","url":null,"abstract":"<p><p>Spinal muscular atrophy (SMA), an autosomal-recessive lower motor neuron disease, causes progressive proximal muscle waste and weakness. It remains unclear whether myopathic changes are involved in pathogenesis. We encountered a patient with adult-onset SMA caused by a homozygous deletion in exon 7 of the survival motor neuron 1 (SMN1) gene who had had four copies of SMN2 exon 7. Muscle biopsy showed neurogenic features of groups of atrophic fibers, fiber-type grouping, and pyknotic nuclear clumps associated with fibers with rimmed vacuoles. Immunohistochemistry revealed sarcoplasmic aggregates of phosphorylated TDP-43 and p62 but not SMN. This study demonstrated myopathic changes with the accumulation of phosphorylated p62 and TDP-43 in the muscles of a patient with SMA, suggesting that abnormal protein aggregation may be involved in myopathic pathology.</p>","PeriodicalId":19204,"journal":{"name":"Neuropathology","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10824846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Neuropathology of spinocerebellar ataxia type 8: Common features and unique tauopathy. 脊髓小脑共济失调8型的神经病理学:常见特征和独特的tau病。
IF 2.3 4区 医学 Q2 Medicine Pub Date : 2023-10-01 Epub Date: 2023-01-26 DOI: 10.1111/neup.12894
Yuki Yonenobu, Goichi Beck, Kansuke Kido, Norihisa Maeda, Rika Yamashita, Kimiko Inoue, Yuko Saito, Masato Hasegawa, Hidefumi Ito, Kazuko Hasegawa, Eiichi Morii, Toru Iwaki, Shigeo Murayama, Hideki Mochizuki

Spinocerebellar ataxia type 8 (SCA8) is a neurodegenerative condition that presents with several neurological symptoms, such as cerebellar ataxia, parkinsonism, and cognitive impairment. It is caused by a CTA/CTG repeat expansion on chromosome 13q21 (ataxin 8 opposite strand [ATXN8OS]). However, the pathological significance of this expansion remains unclear. Moreover, abnormal CTA/CTG repeat expansions in ATXN8OS have also been reported in other neurodegenerative diseases, including progressive supranuclear palsy. In this study, we analyzed all available autopsy cases in Japan to investigate common pathological features and profiles of tau pathology in each case. Severe neuronal loss in the substantia nigra and prominent loss of Purkinje cells, atrophy of the molecular layer, and proliferation of Bergmann glia in the cerebellum were common features. Regarding tauopathy, one case presented with progressive supranuclear palsy-like 4-repeat tauopathy in addition to mild Alzheimer-type 3- and 4-repeat tauopathy. Another case showed 3- and 4-repeat tauopathy accentuated in the brainstem. The other two cases lacked tauopathy after extensive immunohistochemical studies. The present study confirmed common pathological features of SCA8 as degeneration of the substantia nigra in addition to the cerebellum. Our study also confirmed unique tauopathy in two of four cases, indicating the necessity to further collect autopsy cases.

8型脊髓角性共济失调(SCA8)是一种神经退行性疾病,表现为几种神经系统症状,如小脑共济失调、帕金森病和认知障碍。它是由染色体13q21(ataxin 8相反链[ATXN8OS])上的CTA/CTG重复扩增引起的。然而,这种扩张的病理意义尚不清楚。此外,ATXN8OS中CTA/CTG重复序列的异常扩增在其他神经退行性疾病中也有报道,包括进行性核上性麻痹。在这项研究中,我们分析了日本所有可用的尸检病例,以调查每个病例的常见病理特征和tau病理特征。黑质神经元严重缺失,浦肯野细胞明显缺失,分子层萎缩,小脑Bergmann胶质细胞增殖是常见特征。关于tau病,一例除轻度阿尔茨海默病3型和4型tau病外,还表现为进行性核上性麻痹样4重复tau病。另一例表现为脑干中3和4个重复tau病变加重。在广泛的免疫组织化学研究后,另外两个病例缺乏tau病。本研究证实SCA8的常见病理特征为除小脑外的黑质变性。我们的研究还证实了四个病例中有两个病例存在独特的tau病,这表明有必要进一步收集尸检病例。
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引用次数: 2
Intracerebral hirudin injection alleviates cognitive impairment and oxidative stress and promotes hippocampal neurogenesis in rats subjected to cerebral ischemia. 脑内注射水蛭素可减轻脑缺血大鼠的认知障碍和氧化应激,并促进海马神经发生。
IF 2.3 4区 医学 Q2 Medicine Pub Date : 2023-10-01 Epub Date: 2023-03-14 DOI: 10.1111/neup.12897
Xianfeng Xia, Min Li, Renxian Wei, Jin Li, Yulin Lei, Meikui Zhang

Cerebral ischemia starts with cerebral blood flow interruption that causes severely limited oxygen and glucose supply, eliciting a cascade of pathological events, such as excitotoxicity, oxidative stress, calcium dysregulation, and inflammatory response, which could ultimately result in neuronal death. Hirudin has beneficial effects in ischemic stroke and possesses antioxidant and anti-inflammatory properties. Therefore, we investigated the biological functions of hirudin and its related mechanisms in cerebral ischemia. The ischemia-like conditions were induced by transient middle cerebral artery occlusion (MCAO). To investigate hirudin roles, intracerebroventricular injection of 10 U hirudin was given to the rats. Cognitive and motor functions were examined by beam walking and Morris water maze tests. 2,3,5-triphenyl tetrazolium chloride-stained brain sections were used to measure infarct volume. Oxidative stress was determined by assessment of oxidative stress markers. The proliferated cells were labeled by BrdU and Nestin double staining. Western blotting was performed to measure protein levels. Hirudin administration improved cognitive and motor deficits post-ischemia. Hirudin reduced brain infarction and neurological damage in MCAO-subjected rats. Hirudin alleviated oxidative stress and enhanced neurogenesis in ischemic rats. Hirudin facilitated the promotion of phosphorylation of extracellular signal-regulated kinase (ERK) 1/2 and serine-threonine kinase. In sum, hirudin alleviates cognitive deficits by attenuating oxidative stress and promoting hippocampal neurogenesis through the regulation of ERK1/2 and serine-threonine kinase in MCAO-subjected rats.

脑缺血始于脑血流中断,导致氧气和葡萄糖供应严重受限,引发一系列病理事件,如兴奋性毒性、氧化应激、钙失调和炎症反应,最终可能导致神经元死亡。水蛭素对缺血性中风具有有益作用,并具有抗氧化和抗炎特性。因此,我们研究了水蛭素在脑缺血中的生物学功能及其相关机制。短暂性大脑中动脉闭塞(MCAO)可诱发脑缺血样病变。为了研究水蛭素的作用,侧脑室注射10 给大鼠服用U水蛭素。认知和运动功能通过梁式步行和Morris水迷宫测试进行检查。2,3,5-三苯基氯化四氮唑染色的脑切片用于测量梗死体积。通过评估氧化应激标志物来确定氧化应激。用BrdU和Nestin双染色法对增殖的细胞进行标记。进行蛋白质印迹以测量蛋白质水平。水蛭素给药改善了缺血后的认知和运动缺陷。水蛭素可减少MCAO大鼠的脑梗死和神经损伤。水蛭素减轻了缺血大鼠的氧化应激,增强了神经发生。水蛭素促进细胞外信号调节激酶(ERK)1/2和丝氨酸-苏氨酸激酶的磷酸化。总之,水蛭素通过调节MCAO大鼠的ERK1/2和丝氨酸-苏氨酸激酶来减轻氧化应激并促进海马神经发生,从而减轻认知缺陷。
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引用次数: 0
Supratentorial multifocal gliomas associated with Ollier disease harboring IDH1 R132H mutation: A case report. 与携带IDH1 R132H突变的奥利尔病相关的肿瘤上多灶性胶质瘤:一例报告。
IF 2.3 4区 医学 Q2 Medicine Pub Date : 2023-10-01 Epub Date: 2023-03-20 DOI: 10.1111/neup.12902
Hiroshi Ikeda, Shigeru Yamaguchi, Yukitomo Ishi, Kento Wakabayashi, Ai Shimizu, Hiromi Kanno-Okada, Takeshi Endo, Mitsutoshi Ota, Michinari Okamoto, Hiroaki Motegi, Norimasa Iwasaki, Miki Fujimura

Somatic mosaicism of isocitrate dehydrogenase 1/2 (IDH1/2) mutation is a cause of Ollier disease (OD), characterized by multiple enchondromatosis. A 35-year-old woman who was diagnosed with OD at age 24 underwent resection surgery for multifocal tumors located at the right and left frontal lobes that were discovered incidentally. No apparent spatial connection was observed on preoperative magnetic resonance imaging. Pathological examinations revealed tumor cells with a perinuclear halo in the left frontal lobe tumor, whereas astrocytic tumor cells were observed in the right frontal lobe tumor. Based on positive IDH1 R132H immunostaining and the result of 1p/19q fluorescent in situ hybridization, pathological diagnoses were IDH mutant and 1p/19q-codeleted oligodendroglioma in the right frontal lobe tumor and IDH mutant astrocytoma in the left frontal lobe tumor, respectively. The DNA sequencing revealed IDH1 R132H mutation in the peripheral blood sample and frontal lobe tumors. This case suggested that in patients with OD, astrocytoma and oligodendroglioma can co-occur within the same individual simultaneously, and IDH1 R132H mutation was associated with supratentorial development of gliomas.

异柠檬酸脱氢酶1/2(IDH1/2)突变的体细胞嵌合体是奥利尔病(OD)的一个原因,其特征是多发性软骨瘤。一名35岁的女性在24岁时被诊断为OD,她接受了位于左右额叶的多灶性肿瘤的切除手术,这些肿瘤是偶然发现的。术前磁共振成像未观察到明显的空间联系。病理检查显示左额叶肿瘤中有核周晕的肿瘤细胞,而右额叶肿瘤中观察到星形细胞肿瘤细胞。根据阳性的IDH1R132H免疫染色和1p/19q荧光原位杂交结果,病理诊断分别为右额叶肿瘤中的IDH突变型和1p/19-q编码的少突胶质瘤和左额叶肿瘤中IDH突变的星形细胞瘤。DNA测序显示外周血样本和额叶肿瘤中存在IDH1 R132H突变。该病例表明,在OD患者中,星形细胞瘤和少突胶质瘤可以同时发生在同一个体内,IDH1 R132H突变与胶质瘤的幕上发展有关。
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引用次数: 0
An autopsy case of progressive multifocal leukoencephalopathy with massive iron deposition in juxtacortical lesions. 一例进行性多灶性白质脑病的尸检病例,病变旁有大量铁沉积。
IF 2.3 4区 医学 Q2 Medicine Pub Date : 2023-10-01 Epub Date: 2023-02-27 DOI: 10.1111/neup.12898
Kosuke Okamoto, Akitoshi Takeda, Hiroyuki Hatsuta, Terunori Sano, Masaki Takao, Masahiko Ohsawa, Yukio Miki, Kazuo Nakamichi, Yoshiaki Itoh

Progressive multifocal leukoencephalopathy (PML) is a severe demyelinating disease caused by JC virus infection of oligodendrocytes. Little has been reported on iron deposits in patients with PML. Herein, we report a case of PML with massive iron deposition in the juxtacortical regions attaching white matter lesions in a 71-year-old woman who developed bilateral visual disturbance and progressive aphasia after 16 months of rituximab plus cyclophosphamide, doxorubicin, vincristine, and prednisolone treatment for follicular lymphoma. Magnetic resonance imaging revealed white matter lesions in the left parietal and other lobes with massive iron deposition in the juxtacortical lesions. A PCR test for JC virus was positive, confirming the diagnosis of PML. Despite treatment with mefloquine and mirtazapine, the patient died six months later. At autopsy, demyelination was found dominantly in the left parietal lobe. Moreover, hemosiderin-laden macrophages and reactive astrocytes containing ferritin were abundant in the juxtacortical regions adjacent to the white matter lesions. This is a previously unreported case of PML after lymphoma, in which iron deposition was confirmed both radiologically and pathologically.

进行性多灶性白质脑病(PML)是由少突胶质细胞感染JC病毒引起的严重脱髓鞘疾病。关于PML患者铁沉积的报道很少。在此,我们报告了一例PML患者,该患者在16岁后出现双侧视觉障碍和进行性失语症 数月的利妥昔单抗加环磷酰胺、阿霉素、长春新碱和泼尼松治疗滤泡性淋巴瘤。磁共振成像显示左顶叶和其他叶有白质病变,边缘病变有大量铁沉积。JC病毒的PCR检测呈阳性,证实了PML的诊断。尽管使用了甲氟喹和米氮平治疗,患者仍有6人死亡 几个月后。尸检发现脱髓鞘主要发生在左顶叶。此外,含含铁血黄素的巨噬细胞和含铁蛋白的反应性星形胶质细胞在白质病变附近的边缘区域大量存在。这是一个以前未报道的淋巴瘤后PML病例,其中铁沉积在放射学和病理学上都得到了证实。
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引用次数: 0
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