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Eosinophilic meningitis

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https://www.readbyqxmd.com/read/28548945/soluble-antigens-from-the-neurotropic-pathogen-angiostrongylus-cantonensis-directly-induce-thymus-atrophy-in-a-mouse-model
#1
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...
May 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/28542310/geographic-distribution-of-angiostrongylus-cantonensis-in-wild-rats-rattus-rattus-and-terrestrial-snails-in-florida-usa
#2
Heather D Stockdale Walden, John D Slapcinsky, Shannon Roff, Jorge Mendieta Calle, Zakia Diaz Goodwin, Jere Stern, Rachel Corlett, Julia Conway, Antoinette McIntosh
The parasitic nematode Angiostrongylus cantonensis is a major cause of eosinophilic meningitis in humans, and has been documented in other incidental hosts such as birds, horses, dogs and non-human primates. It is endemic in Hawaii, and there have been sporadic reports in the southern continental United States. This parasite uses rats as definitive hosts and snails as intermediate hosts. In this study, we collected potential definitive and intermediate hosts throughout Florida to ascertain the geographic distribution in the state: Rats, environmental rat fecal samples, and snails were collected from 18 counties throughout the state...
2017: PloS One
https://www.readbyqxmd.com/read/28518042/autochthonous-case-of-eosinophilic-meningitis-caused-by-angiostrongylus-cantonensis-france-2016
#3
Yann Nguyen, Benjamin Rossi, Nicolas Argy, Catherine Baker, Beatrice Nickel, Hanspeter Marti, Virginie Zarrouk, Sandrine Houzé, Bruno Fantin, Agnès Lefort
We report a case of a 54-year-old Moroccan woman living in France diagnosed with eosinophilic meningitis caused by Angiostrongylus cantonensis. Diagnosis was based on clinical symptoms and confirmed by testing of serum and cerebrospinal fluid samples. Physicians should consider the risk for A. cantonensis infection outside of endemic areas.
June 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28493001/study-on-the-tolerance-and-adaptation-of-rats-to-angiostrongylus-cantonensis-infection
#4
Liu Ji, Xu Yiyue, He Xujin, Zheng Minghui, Zhang Mengying, Hu Yue, Wu Yanqi, Song Langui, Zeng Xin, Lin Datao, Wan Shuo, Zheng Huanqin, Wu Zhongdao, Lv Zhiyue
Angiostrongylus cantonensis (A. cantonensis) is the most common infectious agent causing eosinophilic meningitis. As an important food-borne parasitic disease, angiostrongyliasis cantonensis is an emerging infectious disease which brings severe harm to central nerve system of human. Rat, one of the few permissive hosts of A. cantonensis known to date, plays an indispensable role in the worm's life cycle. However, the tolerance and adaptation of rat to A. cantonensis infection is rarely understood. In this study, we infected rats with different numbers the third stage larvae (L3) of A...
May 11, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28425387/zebra-borne-neurotropic-equid-herpesvirus-1-meningoencephalitis-in-a-thomson-s-gazelle-eudorcas-thomsonii
#5
Kanako Sakaguchi, Kenneth Kim, Ingeborg Langohr, Annabel G Wise, Roger K Maes, Gordon Pirie, Tokuma Yanai, Mohie Haridy, Lorrie Gaschen, Fabio Del Piero
We describe the histopathologic, immunohistochemical, and molecular features of a case of meningoencephalitis in a Thomson's gazelle ( Eudorcas thomsonii) naturally infected with zebra-borne equid herpesvirus 1 (EHV-1) and the implications for the molecular detection of zebra-borne EHV-1. A 4-y-old female Thomson's gazelle was submitted for postmortem examination; no gross abnormalities were noted except for meningeal congestion. Microscopic evaluation demonstrated multifocal nonsuppurative meningoencephalitis with intranuclear eosinophilic and amphophilic inclusion bodies and EHV-9 antigen in neurons...
April 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28347653/cytochrome-c-oxidase-subunit-i-haplotype-diversity-of-angiostrongylus-cantonensis-nematoda-angiostrongylidae
#6
Praphathip Eamsobhana, Sze-Looi Song, Hoi-Sen Yong, Anchana Prasartvit, Sudarat Boonyong, Anchalee Tungtrongchitr
The rat lungworm Angiostrongylus cantonensis is a food-borne zoonotic parasite of public health importance worldwide. It is the primary etiologic agent of eosinophilic meningitis and eosinophilic meningoencephalitis in humans in many countries. It is highly endemic in Thailand especially in the northeast region. In this study, A. cantonensis adult worms recovered from the lungs of wild rats in different geographical regions/provinces in Thailand were used to determine their haplotype by means of the mitochondrial partial cytochrome c oxidase subunit I (COI) gene sequence...
March 27, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28169282/anti-apoptotic-effects-of-sonic-hedgehog-signalling-through-oxidative-stress-reduction-in-astrocytes-co-cultured-with-excretory-secretory-products-of-larval-angiostrongylus-cantonensis
#7
Kuang-Yao Chen, Cheng-Hsun Chiu, Lian-Chen Wang
Angiostrongylus cantonensis, the rat lungworm, is an important aetiologic agent of eosinophilic meningitis and meningoencephalitis in humans. Co-culturing astrocytes with soluble antigens of A. cantonensis activated the Sonic hedgehog (Shh) signalling pathway and inhibited the apoptosis of astrocytes via the activation of Bcl-2. This study was conducted to determine the roles of the Shh signalling pathway, apoptosis, and oxidative stress in astrocytes after treatment with excretory-secretory products (ESP) from A...
February 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28158507/angiostrongylus-cantonensis-is-an-important-cause-of-eosinophilic-meningitis-in-southern-vietnam
#8
Angela McBride, Tran Thi Hong Chau, Nguyen Thi Thu Hong, Nguyen Thi Hoang Mai, Nguyen To Anh, Tran Tan Thanh, Tran Thi Hue Van, Le Thi Xuan, Tran Phu Manh Sieu, Le Hong Thai, Ly Van Chuong, Dinh Xuan Sinh, Nguyen Duy Phong, Nguyen Hoan Phu, Jeremy Day, Ho Dang Trung Nghia, Tran Tinh Hien, Nguyen Van Vinh Chau, Guy Thwaites, Le Van Tan
No abstract text is available yet for this article.
February 4, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28158416/eosinophilic-meningitis-due-to-infection-with-paragonimus-kellicotti
#9
Nathan C Bahr, Robin L Trotman, Hala Samman, Richard S Jung, Lee R Rosterman, Gary J Weil, Daniel R Hinthorn
Paragonimus kellicotti is an emerging pathogen in the United States with 19 previously reported cases, most in Missouri. Pulmonary symptoms with eosinophilia are most common, though 1 case did involve the central nervous system with few symptoms. We describe the first 2 cases of eosinophilic meningitis due to Paragonimus kellicotti.
May 1, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28114150/chronic-eosinophilic-meningoencephalitis-by-prototheca-wickerhamii-in-an-immunocompetent-boy
#10
Ari Ahn, Yong-Joon Choe, Jeonghyun Chang, Duckhee Kim, Heungsup Sung, Mi-Na Kim, Seok Ho Hong, Jina Lee, Mi-Sun Yum, Tae-Sung Ko
Human protothecosis is mainly a cutaneous infection caused by the Prototheca species. Prototheca wickerhamii is an established pathogen of eosinophilic meningoencephalitis in dogs, but no eosinophilic pleocytosis of the cerebrospinal fluid has been reported in human cases of meningitis. Herein, we report a case of chronic protothecosis manifesting eosinophilic meningoencephalitis in an immunocompetent boy.
January 19, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28070007/first-evidence-of-angiostrongyliasis-caused-by-angiostrongylus-cantonensis-in-guadeloupe-lesser-antilles
#11
Céline Dard, Jean-Eudes Piloquet, Yvonne Qvarnstrom, LeAnne M Fox, Helmi M'kada, Jean-Christophe Hebert, Didier Mattera, Dorothée Harrois
AbstractInfection by the rat lungworm Angiostrongylus cantonensis represents the most common cause of infectious eosinophilic meningitis in humans, causing central nervous system (CNS) angiostrongyliasis. Most of CNS angiostrongyliasis cases were described in Asia, Pacific Basin, Australia, and some limited parts of Africa and America. CNS angiostrongyliasis has been reported in the Caribbean but never in the Lesser Antilles. The primary objectives of this study were to depict the first case of CNS angiostrongyliasis in the Lesser Antilles and investigate the environmental presence of A...
March 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/27940331/cryptic-lineage-diversity-in-the-zoonotic-pathogen-angiostrongylus-cantonensis
#12
Sirilak Dusitsittipon, Charles D Criscione, Serge Morand, Chalit Komalamisra, Urusa Thaenkham
Delimitation of species is still a necessity among parasitic pathogens especially where morphological characters provide limited discernibility. Identification of cryptic lineages (independently evolving lineages that are morphologically similar) is critical as there could be lineage-specific traits that are of epidemiological importance. Angiostrongylus cantonensis is a zoonotic pathogen that can cause eosinophilic meningitis in humans. Recent reports of single marker sequence divergence hint at the potential for cryptic diversity in this lungworm...
December 8, 2016: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/27870071/eosinophilic-meningomyelitis-associated-with-t-cell-lymphoma-in-a-cat
#13
Kathryn Y Bray, Karen R Muñana, Kristina Meichner, Laura A White, Gabriela Seiler
A 12-year-old cat was presented for evaluation of progressive tetraparesis. Magnetic resonance imaging of the cervical spine demonstrated T2-hyperintensity, and contrast enhancement within the C4-C7 spinal cord, with marked meningeal contrast enhancement and segmental nerve root thickening. Lumbar cerebrospinal fluid contained 407 total nucleated cells/μL, with 99% eosinophils. The cat transiently improved with prednisolone, clindamycin, and ivermectin therapy, but subsequently worsened and was euthanized...
December 2016: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/27733201/activation-of-the-hypothalamic-pituitary-adrenal-hpa-axis-contributes-to-the-immunosuppression-of-mice-infected-with-angiostrongylus-cantonensis
#14
Ai-Ling Chen, Xi Sun, Wei Wang, Jin-Feng Liu, Xin Zeng, Jing-Fan Qiu, Xin-Jian Liu, Yong Wang
BACKGROUND: Immunosuppression has been described as a consequence of brain injury and infection by different mechanisms. Angiostrongylus cantonensis can cause injury to the central nervous system and eosinophilic meningitis to human. Both T cell and B cell immunity play an essential role in the resistance of the infection. However, whether brain injury caused by A. cantonensis infection can lead to immunosuppression is not clear. Therefore, the present study sought to observe the alteration of immune responses in mice infected with A...
October 12, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27578821/angiostrongylus-cantonensis-infection-a-cause-of-fever-of-unknown-origin-in-pediatric-patients
#15
Catherine E Foster, Erin G Nicholson, Angela C Chun, Maya Gharfeh, Sara Anvari, Filiz O Seeborg, Michael A Lopez, Judith R Campbell, Lucila Marquez, Jeffrey R Starke, Debra L Palazzi
Fever of unknown origin (FUO) in children is frequently caused by infectious diseases. Angiostrongylus cantonensis, while a primary cause of eosinophilic meningitis, is rarely a cause of FUO. We present 2 pediatric cases of FUO caused by Angiostrongylus cantonensis acquired in Houston, Texas, outside its usual geographic distribution.
December 1, 2016: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/27513930/angiostrongylus-cantonensis-and-a-malaysiensis-broadly-overlap-in-thailand-lao-pdr-cambodia-and-myanmar-a-molecular-survey-of-larvae-in-land-snails
#16
Rutchanee Rodpai, Pewpan M Intapan, Tongjit Thanchomnang, Oranuch Sanpool, Lakkhana Sadaow, Sakhone Laymanivong, Win Papa Aung, Issarapong Phosuk, Porntip Laummaunwai, Wanchai Maleewong
Angiostrongylus cantonensis is a zoonotic nematode parasite causing human eosinophilic meningitis (or meningoencephalitis) worldwide. A closely related species, Angiostrongylus malaysiensis, might also be a human pathogen. Larvae were obtained from land snails in Lao PDR, Cambodia, Myanmar and Thailand. We sequenced two nuclear gene regions (nuclear ribosomal ITS2 and SSU rRNA) and a portion of one mitochondrial gene (COI) from these larvae. Angiostrongylus cantonensis and A. malaysiensis were identified. This is the first report of the molecular identification of the two Angiostrongylus species in Lao PDR, Cambodia and Myanmar...
2016: PloS One
https://www.readbyqxmd.com/read/27434260/baylisascaris-procyonis-associated-meningoencephalitis-in-a-previously-healthy-adult-california-usa
#17
Charles Langelier, Michael J Reid, Cathra Halabi, Natalie Witek, Alejandro LaRiviere, Maulik Shah, Michael R Wilson, Peter Chin-Hong, Vanja Douglas, Kevin R Kazacos, Jennifer M Babik
After severe neurocognitive decline developed in an otherwise healthy 63-year-old man, brain magnetic resonance imaging showed eosinophilic meningoencephalitis and enhancing lesions. The patient tested positive for antibodies to Baylisascaris spp. roundworms, was treated with albendazole and dexamethasone, and showed improvement after 3 months. Baylisascariasis should be considered for all patients with eosinophilic meningitis.
August 2016: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/27406573/cloning-and-expression-of-a-16-kda-recombinant-protein-from-angiostrongylus-cantonensis-for-use-in-immunoblot-diagnosis-of-human-angiostrongyliasis
#18
Apichat Vitta, Paron Dekumyoy, Chalit Komalamisra, Thareerat Kalambaheti, Timothy P Yoshino
Angistrongylus cantonensis is a zoonotic nematode parasite and causative agent of human angiostrongyliasis, which clinically presents as eosinophilic meningitis or meningoencephalitis. Diagnosis of the disease is problematic since parasitologic findings are infrequent, and infection determinations must be based on the clinical symptoms and serological tests with limited specificities and sensitivities. The aim of the present study was to identify and generate a novel recombinant protein from A. cantonensis and evaluate its efficacy in the diagnosis of human angiostrongyliasis when incorporated into a Western blot serodiagnostic system...
November 2016: Parasitology Research
https://www.readbyqxmd.com/read/27405119/phylogeny-of-angiostrongylus-cantonensis-in-thailand-based-on-cytochrome-c-oxidase-subunit-i-gene-sequence
#19
Vitta Apichat, Srisongcram Narongrit, Thiproaj Jittranuch, Wongma Anucha, Polsut Wilaiwan, Fukruksa Chamaiporn, Yimthin Thatcha, Mangkit Bandid, Thanwisai Aunchalee, Dekumyoy Paron
Angiostrongylus cantonensis is an emerging infectious agent causing eosinophilic meningitis or meningoencephalitis in humans with clinical manifestation of severe headache. Molecular genetic studies on classification and phylogeny of A. cantonensis in Thailand are limited. This study surveyed A. cantonensis larvae prevalence in natural intermediate hosts across Thailand and analyzed their phylogenetic relationships. A total of 14,032 freshwater and land snails were collected from 19 provinces of Thailand. None of Filopaludina sp, Pomacea sp, and Cyclophorus sp were infected with Angiostrongylus larvae, whereas Achatina fulica, Cryptozona siamensis, and Megaustenia siamensis collected from Kalasin, Kamphaeng Phet, Phetchabun, Phitsanulok, and Tak Provinces were infected, with C...
May 2016: Southeast Asian Journal of Tropical Medicine and Public Health
https://www.readbyqxmd.com/read/27363042/egyptian-eosinophilic-and-infectious-meningoencepha-litis-and-their-impact-on-psychological-aspects
#20
REVIEW
Mamdouh M M El-Bahnasawy, Mohammad Reda El Feky, Ayman T A Morsy, Mousa A M Ismail, Tosson A Morsy
Meningoencephalitis is an acute inflammation of the brain and spinal cord & their covering protective membranes. Meningitis can be life-threatening because of the inflammation's proximity to the brain and spinal cord; therefore, the condition is classified as a medical emergency. The commonest symptoms of meningitis are headache and neck stiffness associated with fever, confusion or altered consciousness, vomiting, and an inability to tolerate light (photophobia) or loud noises (phonophobia). Children often exhibit only nonspecific symptoms, such as irritability and drowsiness...
April 2016: Journal of the Egyptian Society of Parasitology
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