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https://www.readbyqxmd.com/read/28325722/misdiagnosing-whipple-s-disease-in-the-young
#1
Danai Papakonstantinou, Michael J Riste, Gerald Langman, Ed Moran
Whipple's disease is considered an infection of middle-aged white men of European ancestry. Cases are rare and disproportionately associated with occupational exposure to soil or animals. We report the case of a man aged 22 years with no risk factors, erroneously diagnosed with, and treated for, toxoplasmosis on the basis of consistent lymph node histology. The correct diagnosis was delayed by the dramatic symptomatic improvement resulting from this therapy. Whipple's disease should be considered in cases of granulomatous lymphadenopathy of unknown cause, even if the age of the patient does not fit the classic presentation of the disease...
March 21, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28316427/evaluation-of-toxoplasma-gondii-soluble-whole-and-excretory-secretary-antigens-for-diagnosis-of-toxoplasmosis-by-elisa-test
#2
S Pishkari, S Shojaee, H Keshavarz, M Salimi, M Mohebali
The present study was performed to compare the soluble, whole and excretory/secretary antigens of Toxoplasma gondii (RH strain) in diagnosis of toxoplasmosis by ELISA method. Tachyzoites of T. gondii, RH strain were injected in intra-peritoneal cavity of BALB/c mice, after 4 days tachyzoites were harvested by peritoneal washing of the mice. For soluble antigen, exudates were centrifuged and sediment sonicated and then centrifuged at 4 °C, 1 h, supernatant collected and density of protein determined by Bradford method...
March 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28290263/diagnosis-of-toxoplasmosis-in-pregnancy-evaluation-of-latex-protein-complexes-by-immnunoagglutination
#3
Leandro E Peretti, Verónica D G Gonzalez, Iván S Marcipar, Luis M Gugliotta
The aim of this work was to obtain a reagent based on latex particles for ruling out acute toxoplasmosis in pregnant women by immunoagglutination (IA). Latex-protein complexes (LPC) were previously synthesized coupling the recombinant protein of Toxoplasma gondii P22Ag and the homogenate of the parasite to latex particles with different size, chemical functionality and charge density. LPC were tested in IA assays against a panel of 72 pregnant women serum samples. Results were analysed through receiver operating characteristic curves, determining area under the curve (AUC), sensitivity, specificity positive and negative predictive values (PPV and NPV, respectively)...
March 14, 2017: Parasitology
https://www.readbyqxmd.com/read/28285268/cardiac-manifestations-of-parasitic-diseases
#4
REVIEW
Maria Carmo P Nunes, Milton Henriques Guimarães Júnior, Adriana Costa Diamantino, Claudio Leo Gelape, Teresa Cristina Abreu Ferrari
The heart may be affected directly or indirectly by a variety of protozoa and helminths. This involvement may manifest in different ways, but the syndromes resulting from impairment of the myocardium and pericardium are the most frequent. The myocardium may be invaded by parasites that trigger local inflammatory response with subsequent myocarditis or cardiomyopathy, as occurs in Chagas disease, African trypanosomiasis, toxoplasmosis, trichinellosis and infection with free-living amoebae. In amoebiasis and echinococcosis, the pericardium is the structure most frequently involved with consequent pericardial effusion, acute pericarditis, cardiac tamponade or constrictive pericarditis...
March 11, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28208940/neurological-disorders-complicating-pregnancy-focus-on-obstetric-outcome
#5
Sandya Renukesh, Lavanya Rai
INTRODUCTION: Neurological disorders in pregnancy can be pregnancy related or can be caused by exacerbation of a pre-existing neurological condition or sometimes may even be detected for the first time during pregnancy in which it might be an incidental finding. The diagnosis and management of the neurological disorders in pregnancy is always a challenging task due to varied symptomatology and risks to the fetus. The evaluation and management should be performed in a stepwise fashion and requires multidisciplinary approach...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28202794/evaluation-of-the-toxoplasma-elite-mgb%C3%A2-real-time-pcr-assay-for-the-diagnosis-of-toxoplasmosis
#6
Florence Robert-Gangneux, Marie-Pierre Brenier-Pinchart, Hélène Yera, Sorya Belaz, Emmanuelle Varlet-Marie, Patrick Bastien
Molecular diagnosis of congenital toxoplasmosis or disseminated toxoplasmosis is mainly based on PCR. The repeated DNA element rep529 has become the main DNA target used in most, whether laboratory-developed or commercial, PCR methods. In this multicenter study, we evaluated the Toxoplasma ELITe MGB® (Elitech®) commercial kit, by comparison with three reference quantitative PCR assays (RA) used in routine in three proficient laboratories of the French National Reference Center for Toxoplasmosis network, using Toxoplasma calibrated suspensions diluted to obtain a range of concentrations from 0...
February 15, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28170109/modulation-of-host-immune-responses-to-toxoplasma-gondii-by-micrornas
#7
Yihong Cai, Jilong Shen
To survive successfully, Toxoplasma counteracts the strictly regulated host innate response to downregulate inflammation that could be deleterious for the parasite. MicroRNAs are vital regulators of both innate and adaptive immunity, controlling the maintenance and development of immune progenitors as well as the differentiation and the functions of host mature immune cells. Thus the complexity of mechanisms underlying the connection between Toxoplasma and host immunity has led to investigations of miRNAs as additional key molecular players...
February 7, 2017: Parasite Immunology
https://www.readbyqxmd.com/read/28169858/central-nervous-system-infections-in-immunocompromised-patients
#8
Romain Sonneville, Eric Magalhaes, Geert Meyfroidt
PURPOSE OF REVIEW: Although rare, central nervous system (CNS) infections are increasingly being recognized in immunocompromised patients. The goal of the present review is to provide a practical diagnostic approach for the intensivist, and to briefly discuss some of the most prevalent conditions. RECENT FINDINGS: Immunocompromised patients presenting with new neurological symptoms should always be suspected of a CNS infection. These infections carry a poor prognosis, especially if intracranial hypertension, severely altered mental status or seizures are present...
April 2017: Current Opinion in Critical Care
https://www.readbyqxmd.com/read/28168070/chronic-subdural-hematoma-associated-with-thrombocytopenia-in-a-patient-with-human-immunodeficiency-virus-infection-in-cameroon
#9
Clovis Nkoke, Engelbert Bain Luchuo, Denis Teuwafeu, Ines Nepetsoun, Cyrille Nkouonlack
Hematological abnormalities including thrombocytopenia are common in patients living with HIV infection. Patients with HIV infection related thrombocytopenia present generally with only minor bleeding problems. But cases of subdural hematoma are very rare. A 61-year-old female with a history of HIV infection of 9 years' duration presented with a 3-month history of generalized headache associated with visual blurring and anterograde amnesia. There was no history of trauma or fever. She was treated empirically for cerebral toxoplasmosis for 6 weeks without any improvement of the symptoms...
2017: Case Reports in Neurological Medicine
https://www.readbyqxmd.com/read/28138010/diagnosis-treatment-and-prevention-of-congenital-toxoplasmosis-in-the-united-states
#10
Yvonne A Maldonado, Jennifer S Read
No abstract text is available yet for this article.
February 2017: Pediatrics
https://www.readbyqxmd.com/read/28127354/dna-amplification-techniques-for-the-detection-of-toxoplasma-gondii-tissue-cysts-in-meat-producing-animals-a-narrative-review-article
#11
REVIEW
Farooq Riaz, Imran Rashid, Haroon Akbar, Wasim Shehzad, Saher Islam, Amna Arshad Bajwa, Khalid Saeed, Kamran Ashraf
BACKGROUND: Toxoplasma gondii is an intracellular parasite, which infects one-third population of world. Humans and animals acquire infection by ingesting oocytes from feces of cats or by meat of other animals having cysts that may lead to congenital, ocular or cephalic toxoplasmosis. Either it is important to detect T. gondii from meat of food animals from retail shops or directly at slaughterhouses, which is meant for export. METHODS: The current research was done without time limitation using such terms as follows: "Toxoplasma gondii", "Meat", "Tissue cyst", "PCR", "LAMP", "Screening" and "Immunological assay" alone or in combination, in English language...
October 2016: Iranian Journal of Parasitology
https://www.readbyqxmd.com/read/28086758/toxoplasmosis-associated-iris-involving-the-cns-a-case-report-with-longitudinal-analysis-of-t-cell-subsets
#12
Rita Rb-Silva, Claudia Nobrega, Eugénia Reiriz, Soraia Almeida, Rui Sarmento-Castro, Margarida Correia-Neves, Ana Horta
BACKGROUND: HIV-infected patients may present an unforeseen clinical worsening after initiating antiretroviral therapy known as immune reconstitution inflammatory syndrome (IRIS). This syndrome is characterized by a heightened inflammatory response toward infectious or non-infectious triggers, and it may affect different organs. Diagnosis of IRIS involving the central nervous system (CNS-IRIS) is challenging due to heterogeneous manifestations, absence of biomarkers to identify this condition, risk of long-term sequelae and high mortality...
January 13, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28056092/improvement-and-evaluation-of-loop-mediated-isothermal-amplification-for-rapid-detection-of-toxoplasma-gondii-infection-in-human-blood-samples
#13
Xi-Meng Sun, Yong-Sheng Ji, Xian-Yong Liu, Mei Xiang, Guang He, Li Xie, Jing-Xia Suo, Xun Suo
Loop-mediated isothermal amplification (LAMP), an attractive DNA amplification method, was developed as a valuable tool for the rapid detection of Toxoplasma gondii. In this study, species-specific LAMP primers were designed by targeting the AF146527 sequence, which was a conserved sequence of 200- to 300-fold repetitive 529 bp fragment of T.gondii. LAMP reaction system was optimized so that it could detect the minimal DNA sample such as a single tachyzoite or 10 copies of recombinant plasmid. No cross-reactivity was found when using DNA from other parasites as templates...
2017: PloS One
https://www.readbyqxmd.com/read/28052948/tb-or-not-to-be-kikuchi-fujimoto-disease-a-rare-but-important-differential-for-tb
#14
C McKenna, T Whitfield, N Patel, A Bonington
A 29-year-old British Pakistani woman presented with a 2-month history of drenching fevers, night sweats, lethargy and tender cervical and axillary lymphadenopathy. Initial investigations, bloods and imaging were unremarkable. Fever persisted during her admission, and treatment for tuberculosis (TB) lymphadenitis was started postbiopsy until histology confirmed a diagnosis of Kikuchi-Fujimoto's disease (KFD). KFD has a non-specific presentation of fever, night sweats and lymphadenopathy and commonly raises a clinical suspicion of a number of other serious conditions such as TB, lymphoma, HIV, systemic lupus erythematous, toxoplasmosis and infectious mononucleosis...
January 4, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/27999640/toxoplasmosis-in-iran-a-guide-for-general-physicians-working-in-the-iranian-health-network-setting-a-systematic-review
#15
REVIEW
Seyed Mohammad Alavi, Leila Alavi
BACKGROUND: Human toxoplasmosis is an important zoonotic infection worldwide which is caused by the intracellular parasite Toxoplasma gondii (T.gondii). The aim of this study was to review briefly the general aspects of toxoplasma infection in in Iranian health system network. METHODS: We searched published toxoplasmosis related articles in English databases including Science Direct, Pub Med, Scopus, Google Scholar, Magiran, Iran Medex, Iran Doc and Scientific Information Database (SID) for toxoplasmosis...
2016: Caspian Journal of Internal Medicine
https://www.readbyqxmd.com/read/27992837/toxoplasma-infected-subjects-report-an-obsessive-compulsive-disorder-diagnosis-more-often-and-score-higher-in-obsessive-compulsive-inventory
#16
J Flegr, J Horáček
BACKGROUND: Latent toxoplasmosis, the life-long presence of dormant stages of Toxoplasma in immunoprivileged organs and of anamnestic IgG antibodies in blood, affects about 30% of humans. Infected subjects have an increased incidence of various disorders, including schizophrenia. Several studies, as well as the character of toxoplasmosis-associated disturbance of neurotransmitters, suggest that toxoplasmosis could also play an etiological role in Obsessive-Compulsive Disorder (OCD). METHODS: The aim of the present cross-sectional study performed on a population of 7471 volunteers was to confirm the association between toxoplasmosis and OCD, and toxoplasmosis and psychological symptoms of OCD estimated by the standard Obsessive-Compulsive Inventory-Revised (OCI-R)...
December 16, 2016: European Psychiatry: the Journal of the Association of European Psychiatrists
https://www.readbyqxmd.com/read/27988201/early-detection-of-toxoplasma-gondii-infection-by-using-a-interferon-gamma-release-assay-a-review
#17
REVIEW
Shima Mahmoudi, Setareh Mamishi, Xun Suo, Hossein Keshavarz
Antibody-based serological tests are currently the most common diagnostic methods for detection of Toxoplasma gondii; however, these tests bear several limitations. Recently, Interferon-gamma release assay (IGRA), a T-cell-based test, was introduced as an in vitro test for detection of T. gondii infection. Few studies have investigated the potential role of cell immunity in diagnosis of toxoplasmosis. IGRA accurately distinguished infected from uninfected individuals, showing strong lymphocyte activation after in vitro stimulation with T...
January 2017: Experimental Parasitology
https://www.readbyqxmd.com/read/27974541/characterization-and-diagnostic-application-of-trypanosoma-cruzi-trypomastigote-excreted-secreted-antigens-shed-in-extracellular-vesicles-released-from-infected-mammalian-cells
#18
Norma L Bautista-López, Momar Ndao, Fabio Vasquez Camargo, Takeshi Nara, Takeshi Annoura, Darryl B Hardie, Christoph H Borchers, Armando Jardim
Chagas disease, caused by Trypanosoma cruzi, although endemic in many parts of Central and South America, is emerging as a global health threat through the potential contamination of blood supplies. Consequently, in the absence of a gold standard assay for the diagnosis of Chagas disease, additional antigens or strategies are needed. A proteomic analysis of the trypomastigote excreted-secreted antigens (TESA) associated with exosomal vesicles shed by T. cruzi identified ∼80 parasite proteins, with the majority being trans-sialidases...
March 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27956093/late-diagnosis-of-congenital-toxoplasmosis-based-on-serological-follow-up-a-case-report
#19
Céline Dard, Cathy Chemla, Hélène Fricker-Hidalgo, Marie-Pierre Brenier-Pinchart, Marie Baret, Alexandre Mzabi, Isabelle Villena, Hervé Pelloux
Toxoplasma gondii is a protozoan parasite infecting up to one third of the world's population. T. gondii infection is usually benign in immunocompetent patients but can be life-threatening when congenitally transmitted. Congenital toxoplasmosis presentation ranges from severe central nervous system and ocular features, to a well appearing newborn with onset of complications late in childhood. The diagnosis of subclinical form remains important since early treatment reduces later complications such as chorioretinitis...
April 2017: Parasitology International
https://www.readbyqxmd.com/read/27940418/toxoplasmosis-versus-lymphoma-cerebral-lesion-characterization-using-dsc-mri-revisited
#20
Elizabeth H Dibble, Jerrold L Boxerman, Grayson L Baird, John E Donahue, Jeffrey M Rogg
OBJECTIVE: CNS toxoplasmosis and lymphoma are often indistinguishable by conventional contrast-enhanced MRI. There is limited literature on the diagnostic efficacy of dynamic susceptibility contrast (DSC) MRI for differentiating these entities. This study assesses the clinical utility of relative cerebral blood volume (rCBV) for making a diagnosis and determines rCBV thresholds for differentiation using contemporary DSC-MRI. PATIENTS AND METHODS: Thirteen patients with 25 lesions (13 toxoplasmosis and 12 lymphoma) and pre-treatment DSC-MRI were identified retrospectively...
January 2017: Clinical Neurology and Neurosurgery
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