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Eosinophilic meningitis

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https://www.readbyqxmd.com/read/29451597/achatina-fulica-infected-by-angiostrongylus-cantonensis-on-beaches-in-the-west-zone-of-rio-de-janeiro-brazil
#1
André H Bechara, Raquel O Simões, Marta Júlia Faro, Juberlan S Garcia
Angiostrongylus cantonensis is considered the main etiological agent of eosinophilic meningitis in humans. At present, this zoonosis is considered an emerging disease mainly in the Americas. The aim of this study was to determine the prevalence of Achatina fulica infected by Angiostrongylus cantonensis in restinga areas along beaches in the west zone of Rio de Janeiro city, Brazil. The study areas included the following beaches: Barra da Tijuca, Recreio dos Bandeirantes, Reserva, Prainha and Grumari. Ninety specimens of Achatina fulica were collected...
2018: Revista do Instituto de Medicina Tropical de São Paulo
https://www.readbyqxmd.com/read/29438532/a-child-with-intermittent-headaches-and-eosinophilic-meningitis
#2
Sara R Saporta-Keating, Eric A F Simões, Guixia Yu, Scot Federman, David Mirsky, Samuel R Dominguez, Charles Y Chiu, Kevin Messacar
No abstract text is available yet for this article.
February 9, 2018: Journal of the Pediatric Infectious Diseases Society
https://www.readbyqxmd.com/read/29411969/diagnosing-and-understanding-angiostrongyliasis-a-zoonotic-cause-of-meningitis
#3
Carlos Graeff-Teixeira, Alessandra Loureiro Morassutti, Malcolm K Jones
Eosinophilic meningitis caused by Angiostrongylus cantonensis is spreading worldwide, and it can manifest as a severe neurological disease. Angiostrongyliasis is a food- and water-borne parasitosis that usually exhibits a seasonal and circumscribed geographical distribution. To improve control and treatment of these infections, further studies of transmission dynamics under natural conditions and the development of better diagnostic tools and treatment options are needed.
February 7, 2018: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/29408878/the-endocannabinoid-system-in-canine-steroid-responsive-meningitis-arteritis-and-intraspinal-spirocercosis
#4
Jessica Freundt-Revilla, Franciska Heinrich, Alexander Zoerner, Felix Gesell, Martin Beyerbach, Merav Shamir, Anna Oevermann, Wolfgang Baumgärtner, Andrea Tipold
Endocannabinoids (ECs) are involved in immunomodulation, neuroprotection and control of inflammation in the central nervous system (CNS). Activation of cannabinoid type 2 receptors (CB2) is known to diminish the release of pro-inflammatory factors and enhance the secretion of anti-inflammatory cytokines. Furthermore, the endocannabinoid 2-arachidonoyl glycerol (2-AG) has been proved to induce the migration of eosinophils in a CB2 receptor-dependent manner in peripheral blood and activate neutrophils independent of CB activation in humans...
2018: PloS One
https://www.readbyqxmd.com/read/29391024/chi3l3-a-potential-key-orchestrator-of-eosinophil-recruitment-in-meningitis-induced-by-angiostrongylus-cantonensis
#5
Shuo Wan, Xiaoqiang Sun, Feng Wu, Zilong Yu, Lifu Wang, Datao Lin, Zhengyu Li, Zhongdao Wu, Xi Sun
BACKGROUND: Angiostrongylus cantonensis, an important foodborne parasite, can induce serious eosinophilic meningitis in non-permissive hosts, such as mouse and human. However, the characteristics and mechanisms of the infection are still poorly understood. This study sought to determine the key molecules and its underlying mechanism in inducing brain eosinophilic infiltration caused by Angiostrongylus cantonensis. METHODS: Mathematical models were established for prediction of significantly changing genes and the functional associated protein with RNA-seq data in Angiostrongylus cantonensis infection...
February 2, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29258580/apoptosis-and-necroptosis-of-mouse-hippocampal-and-parenchymal-astrocytes-microglia-and-neurons-caused-by-angiostrongylus-cantonensis-infection
#6
Zhang Mengying, Xu Yiyue, Pan Tong, Hu Yue, Yanin Limpanont, Huang Ping, Kamolnetr Okanurak, Wu Yanqi, Paron Dekumyoy, Zhou Hongli, Dorn Watthanakulpanich, Wu Zhongdao, Wang Zhi, Lv Zhiyue
BACKGROUND: Angiostrongylus cantonensis has been the only parasite among Angiostrongylidae to cause human central nervous system infection characterized by eosinophilic meningitis or meningoencephalitis. The mechanism of the extensive neurological impairments of hosts caused by A. cantonensis larvae remains unclear. The aim of the present study was to investigate apoptosis, necroptosis and autophagy in the brains of mice infected with A. cantonensis, which will be valuable for better understanding the pathogenesis of angiostrongyliasis cantonensis...
December 19, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/29148389/angiostrongylus-cantonensis-dna-in-cerebrospinal-fluid-of-persons-with-eosinophilic-meningitis-laos
#7
Damien K Y Ming, Sayaphet Rattanavong, Tehmina Bharucha, Onanong Sengvilaipaseuth, Audrey Dubot-Pérès, Paul N Newton, Matthew T Robinson
Definitive identification of Angiostrongylus cantonensis parasites from clinical specimens is difficult. As a result, regional epidemiology and burden are poorly characterized. To ascertain presence of this parasite in patients in Laos with eosinophilic meningitis, we performed quantitative PCRs on 36 cerebrospinal fluid samples; 4 positive samples confirmed the parasite's presence.
December 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28989050/novel-application-of-time-spatial-labeling-inversion-pulse-magnetic-resonance-imaging-for-diagnosis-of-external-hydrocephalus
#8
Shunsuke Nakae, Kazuhiro Murayama, Kazuhide Adachi, Tadashi Kumai, Masato Abe, Yuichi Hirose
BACKGROUND: Although a subdural fluid collection is frequently observed, diagnostic methods that differentiate between the subdural collection caused by external hydrocephalus and that caused by subdural hygroma have not been established. Here, we report a case of external hydrocephalus caused by Gliadel-induced eosinophilic meningitis that has been previously reported in only one case and can be diagnosed by time-spatial labeling inversion pulse magnetic resonance imaging (Time-SLIP MRI)...
October 5, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28953426/a-proteomic-analysis-of-the-differentially-expressed-proteins-in-the-intracranial-angiostrongylus-cantonensis-larvae-in-permissive-and-non-permissive-hosts
#9
Dan She, Xin Zhang, Ze Xun Mo, Gui Lan Yang, Jyh-Wei Shin, Xiao Guang Chen, Li Wang Cui, Hua Li
Angiostrongylus cantonensis infection can lead to severe neuropathological damages caused by their development in the central nervous system (CNS) after penetrating the blood-brain barrier (BBB). They commonly cause eosinophilic meningitis or meningoencephalitis (EM) in non-permissive hosts (e.g., mice). It has been shown that differences exist in the brains of permissive and non-permissive hosts during the larval development of A. cantonensis, however, the mechanism underlying the difference is not completely understood...
September 27, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28950910/stimulation-of-il-1%C3%AE-and-il-6-through-nf-%C3%AE%C2%BAb-and-sonic-hedgehog-dependent-pathways-in-mouse-astrocytes-by-excretory-secretory-products-of-fifth-stage-larval-angiostrongylus-cantonensis
#10
Kuang-Yao Chen, Lian-Chen Wang
BACKGROUND: Angiostrongylus cantonensis is an important causative agent of eosinophilic meningitis and eosinophilic meningoencephalitis in humans. Previous studies have shown that the Sonic hedgehog (Shh) signaling pathway may reduce cell apoptosis by inhibiting oxidative stress in A. cantonensis infection. In this study, we investigated the relationship between cytokine secretion and Shh pathway activation after treatment with excretory/secretory products (ESP) of fifth-stage larval A...
September 26, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28947512/closing-the-brief-case-angiostrongylus-cantonensis-eosinophilic-meningitis-in-a-returned-traveler
#11
EDITORIAL
Kunatum Prasidthrathsint, Julia Lewis, Marc Roger Couturier
No abstract text is available yet for this article.
October 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28947508/the-brief-case-angiostrongylus-cantonensis-eosinophilic-meningitis-in-a-returned-traveler
#12
EDITORIAL
Kunatum Prasidthrathsint, Julia Lewis, Marc Roger Couturier
No abstract text is available yet for this article.
October 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28930003/angiostrongylus-cantonensis-eosinophilic-meningitis-in-an-infant-tennessee-usa
#13
Tim Flerlage, Yvonne Qvarnstrom, John Noh, John P Devincenzo, Arshia Madni, Bindiya Bagga, Nicholas D Hysmith
Angiostrongylus cantonensis, the rat lungworm, is the most common infectious cause of eosinophilic meningoencephalitis worldwide. This parasite is endemic to Southeast Asia and the Pacific Islands, and its global distribution is increasing. We report A. cantonensis meningoencephalitis in a 12-month-old boy in Tennessee, USA, who had not traveled outside of southwestern Tennessee or northwestern Mississippi.
October 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28859686/the-genetic-variation-of-angiostrongylus-cantonensis-in-the-people-s-republic-of-china
#14
Shan Lv, Yi Zhang, Peter Steinmann, Jürg Utzinger, Xiao-Nong Zhou
BACKGROUND: The People's Republic of China (P.R. China) is the presumptive home range of the rat lungworm Angiostrongylus cantonensis, a major aetiological agent of human eosinophilic meningitis. We present a study of the genetic variation of A. cantonensis in P.R. China. Our aim was to deepen the current knowledge pertaining to its origin and global spread from a molecular perspective. METHODS: Adult A. cantonensis were collected in the frame of a national survey and identified based on morphological criteria...
September 1, 2017: Infectious Diseases of Poverty
https://www.readbyqxmd.com/read/28827809/phylogeography-of-angiostrongylus-cantonensis-nematoda-angiostrongylidae-in-southern-china-and-some-surrounding-areas
#15
Jian Peng, Zhang-Ping He, Shuai Zhang, Zhao-Rong Lun, Zhong-Dao Wu, Chia-Kwung Fan, Christopher L Brown, Po-Ching Cheng, Shih-Yi Peng, Ting-Bao Yang
Angiostrongylus cantonensis is of increasing public health importance as the main zoonotic pathogen causing eosinophilic meningitis or meningoencephalitis, which has been documented all over the world. However, there are very limited studies about its phylogeography and spread pattern. In the present study, the phylogeography of A. cantonensis in southern China (including Taiwan) and partial areas of Southeast Asia were studied based on the sequences of complete mitochondrial cytochrome b (Cytb) gene. A total of 520 individuals of A...
August 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28802946/effects-of-experimental-angiostrongylus-cantonensis-infection-on-the-reproductive-biology-of-biomphalaria-straminea-and-biomphalaria-tenagophila
#16
Mariana G Lima, Vinícius M Tunholi-Alves, Tatiane Cristina S Bonfim, Fabrício N Gaudêncio, Juberlan S Garcia, Arnaldo Maldonado, Jairo Pinheiro, Silvana C Thiengo
Eosinophilic meningoencephalitis is an endemic zoonosis in Southeast Asia and the Pacific Islands, but in recent years, new cases have been reported in various countries outside these regions, including Brazil, where it is considered an emerging disease. In this study, the effect of infection by the nematode Angiostrongylus cantonensis, one of the main etiologic agent of this disease, on the reproductive biology of the planorbid snails Biomphalaria straminea and B. tenagophila was investigated during the pre-patent period...
August 9, 2017: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/28719951/neuronal-apoptosis-pathological-basis-of-behavioral-dysfunctions-induced-by-angiostrongylus-cantonensis-in-rodents-model
#17
Shiqi Luo, Lisi OuYang, Jie Wei, Feng Wu, Zhongdao Wu, Wanlong Lei, Dongjuan Yuan
Angiostrongylus cantonensis invades the central nervous system (CNS) of humans to induce eosinophilic meningitis and meningoencephalitis and leads to persistent headache, cognitive dysfunction, and ataxic gait. Infected mice (nonpermissive host), admittedly, suffer more serious pathological injuries than rats (permissive host). However, the pathological basis of these manifestations is incompletely elucidated. In this study, the behavioral test, histological and immunohistochemical techniques, and analysis of apoptotic gene expression, especially caspase-3, were conducted...
June 2017: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/28704038/eosinophilic-meningitis-caused-by-angiostrongylus-cantonensis
#18
Shan Lv, Xiao-Nong Zhou, Jason R Andrews
Rat lungworm, Angiostrongylus cantonensis, is one major cause of human eosinophilic meningitis. This helminth is endemic in Southeast Asia, Pacific Islands, and the Caribbean and has recently expanded to South America. The infection is characterized by an elevated eosinophil count in cerebrospinal fluid. Common symptoms and signs include headache, neck stiffness, paresthesia and nausea/vomiting. The unique history of eating freshwater and land snails or slugs within 2 weeks before onset is helpful for diagnosis...
July 13, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28626635/eosinophilic-meningoencephalitis-associated-with-rat-lungworm-angiostrongylus-cantonensis-migration-in-two-nine-banded-armadillos-dasypus-novemcinctus-and-an-opossum-didelphis-virginiana-in-the-southeastern-united-states
#19
Martha F Dalton, Heather Fenton, Christopher A Cleveland, Elizabeth J Elsmo, Michael J Yabsley
Angiostrongylus cantonensis, the rat lungworm, was the cause of neural larval migrans in two nine-banded armadillos (Dasypus novemcinctus) and one Virginia opossum (Didelphis virginiana) from the southeastern United States. Histologic findings in all three cases included eosinophilic meningoencephalitis with variable numbers of nematode larvae in the meninges or the neuroparenchyma. In two of the three cases, nematodes were extracted from brain tissue via a "squash prep" method. Identification of the nematodes was confirmed by amplification and sequence analysis of the partial cytochrome c oxidase subunit I gene from all three cases...
August 2017: International Journal for Parasitology. Parasites and Wildlife
https://www.readbyqxmd.com/read/28548945/soluble-antigens-from-the-neurotropic-pathogen-angiostrongylus-cantonensis-directly-induce-thymus-atrophy-in-a-mouse-model
#20
Zhen Liu, Dong-Ming Su, Zi-Long Yu, Feng Wu, Rui-Feng Liu, Shi-Qi Luo, Zhi-Yue Lv, Xin Zeng, Xi Sun, Zhong-Dao Wu
The nematode Angiostrongylus cantonensis (A.C.) is a neurotropic pathogen; stage-III larva invade the human (non-permissive host) central nervous system (CNS) to cause eosinophilic meningitis or meningoencephalitis accompanied by immunosuppression. In an A.C.-infectedmouse (another non-permissive host) model, CNS damage-associated T cell immune deficiency and severe inflammation were proposed to result from activation of the hypothalamic-pituitary-adrenal (HPA) axis. However, glucocorticoids are anti-inflammatory agents...
July 25, 2017: Oncotarget
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