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toxoplasmosis ocular

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https://www.readbyqxmd.com/read/28769551/intravitreal-aflibercept-for-choroidal-neovascularization-associated-with-chorioretinitis-a-pilot-study
#1
Andrii R Korol, Oleksandra Zborovska, Taras Kustryn, Oleksandra Dorokhova, Nataliya Pasyechnikova
PURPOSE: The purpose of this study was to evaluate the potential benefits of intravitreal aflibercept injections for the treatment of choroidal neovascularization (CNV) secondary to chorioretinitis. METHODS: In this uncontrolled, prospective cohort study, 15 eyes of 14 consecutive patients affected by CNV associated with ocular toxoplasmosis were treated with intravitreal aflibercept (2 mg) pro re nata and observed over a 12-month follow-up period. The primary outcome was the change in best-corrected visual acuity (BCVA) from baseline to month 12...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28761461/pcr-based-diagnosis-of-toxoplasma-parasite-in-ocular-infections-having-clinical-indications-of-toxoplasmosis
#2
Atieh Farhadi, Ali Haniloo, Asghar Fazaeli, Siamak Moradian, Mehdi Farhadi
BACKGROUND: The diagnosis of ocular toxoplasmosis is mainly based on clinical features. However, ocular fluid testing by PCR may be very helpful for approval or rejection of this etiology. In this study, we utilized a nested-PCR technique, targeting the B1 partial sequence to analyze the aqueous and vitreous samples for evaluating the presence of the Toxoplasma DNA. METHODS: Fifty aqueous or vitreous humor samples were obtained from patients with clinical features of ocular toxoplasmosis admitted to ophthalmology hospitals and clinics in Iran, within 2014...
January 2017: Iranian Journal of Parasitology
https://www.readbyqxmd.com/read/28700250/false-negative-toxoplasma-serology-in-an-immunocompromised-patient-with-pcr-positive-ocular-toxoplasmosis
#3
Rehan Rajput, Alastair K Denniston, Philip I Murray
PURPOSE: The authors report a case of a 60-year-old Caucasian male with a background of treated Chronic Lymphocytic Leukaemia (CLL) with secondary hypogammaglobulinaemia present with toxoplasma chorioretinitis and negative serum toxoplasma serology on presentation and on subsequent reactivation. METHODS: Retrospective case notes review with fundal photographs. RESULTS: In this case, on initial presentation and on recurrence, the patient's serum anti-Toxoplasma IgG remained negative...
July 12, 2017: Ocular Immunology and Inflammation
https://www.readbyqxmd.com/read/28640004/ocular-lesions-in-congenital-toxoplasmosis-in-santa-isabel-do-iva%C3%A3-paran%C3%A3-brazil
#4
Ana Paula Sanders, Tatiane Dos Santos, Cleusa Kimie Koike Felipe, Maria Lucia Estevão, Caroni Cícero, Fernanda Evangelista, Carlos Alexandre Manrique, Angélica Sayuri Mizutani, Ana Lucia Falavigna-Guilherme
We verified clinical and psychopedagogic aspects of congenital cases with ocular sequelae, 13 years after toxoplasmosis outbreak in Santa Isabel do Ivaí, and current seroprevalence of this zoonosis in pregnant women. Audiologic and ophthalmologic evaluations were performed in congenital cases, in addition to collection of clinical and psychopedagogic data. In pregnant women, current seroprevalence was observed. Among affected teenagers, 2 of 5 are behind in school grade, and 4 of 5 reported learning difficulties, requiring psychopedagogic monitoring, as well as ocular complaints...
September 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28626822/a-prospective-randomized-trial-of-azithromycin-versus-trimethoprim-sulfamethoxazole-in-treatment-of-toxoplasmic-retinochoroiditis
#5
Alireza Lashay, Ahmad Mirshahi, Najaf Parandin, Hamid Riazi Esfahani, Mehdi Mazloumi, Mohammad Reza Lashay, Mohammad Karim Johari, Elham Ashrafi
PURPOSE: To assess the efficacy of oral azithromycin in the treatment of toxoplasmic retinochoroiditis. METHODS: A randomized interventional comparative study was conducted on 14 patients with ocular toxoplasmosis who were treated with oral azithromycin and 13 patients who were treated with oral trimethoprim/sulfamethoxazole for 6-12 weeks. The achievement of treatment criteria in the two groups and lesion size reduction were considered as primary outcome measures...
June 2017: Journal of Current Ophthalmology
https://www.readbyqxmd.com/read/28591288/ocular-sarcoidosis-masked-by-positive-igm-for-toxoplasmosis
#6
Murilo Bertazzo Peres, Jacqueline Martins de Sousa, Heloisa Nascimento
We report a case of ocular sarcoidosis with positive immunoglobulin (Ig) M and IgG serology for toxoplasmosis. The patient was a young female with red painful eyes, bilateral eyelid edema, and panuveitis with periphlebitis. In laboratory testing, she was IgM and IgG positive for toxoplasmosis and anergic in the tuberculin test. Topical treatment for anterior uveitis and oral antibiotics for toxoplasmosis were started, without improvement. Orbit tomography showed increased lacrimal glands bilaterally, and chest X-ray radiographic findings were consistent with pulmonary sarcoidosis, which supported the presumed ocular sarcoidosis diagnosis...
March 2017: Arquivos Brasileiros de Oftalmologia
https://www.readbyqxmd.com/read/28591283/outcomes-of-phacoemulsification-in-patients-with-uveitis-at-a-tertiary-center-in-s%C3%A3-o-paulo-brazil-a-review-of-cases-from-2007-to-2012
#7
Patrícia M G Cerqueira, Felipe T B Gaspar C da Silva, Pedro Carlos Carricondo, Edilberto Olivalves, Carlos Eduardo Hirata, Joyce Hisae Yamamoto
Purpose: To evaluate the outcomes of phacoemulsification with intraocular lens (IOL) implantation in eyes with uveitis. Methods: Consecutive patients with uveitis and cataracts who had phacoemulsification and acrylic IOL implantation during 2007-2012 were evaluated for visual outcomes, etiology, and complications. Inflammation was controlled for at least 3 months before surgery, and oral prednisone (0.5 mg/kg/day) was administered to patients with non-infectious uveitis...
March 2017: Arquivos Brasileiros de Oftalmologia
https://www.readbyqxmd.com/read/28527270/-effect-of-antenatal-spiramycin-treatment-on-the-frequency-of-retinochoroiditis-due-to-congenital-toxoplasmosis-in-a-colombian-cohort
#8
Liliana María Zuluaga, John Camilo Hernández, Carlos Felipe Castaño, Jorge Hernando Donado
INTRODUCTION: Gestational toxoplasmosis is frequent and severe. There is still debate about the benefits of treatment against ocular manifestations in the newborn. Spiramycin treatment is used for this purpose, unfortunately prenatal diagnosis is sometimes delayed and pregnant women are not treated. OBJECTIVE: To describe the relationship between treatment with spiramycin during pregnancy in mothers with gestational toxoplasmosis and development of ocular toxoplasmosis in newborns...
April 1, 2017: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/28508165/frequency-of-toxoplasma-gondii-in-the-retina-in-eye-banks-in-brazil
#9
Deise F Costa, Heloisa Nascimento, Aline Sutili, Fernando A J Nobrega, Flavio Fowler, Mario Junqueira Nobrega, Cristina Garrido, Janaina de Oliveira Dias, Consuelo B D Adán, Luiz Vicente Rizzo, Claudio Silveira, Rubens Belfort, Alessandra G Commodaro
Ocular toxoplasmosis is the main cause of posterior uveitis worldwide frequently leading to vision loss. In Brazil, the seroprevalence of Toxoplasma gondii infection ranges from 50 to 80% depending of the region studied. The frequency of toxoplasmic retinal scar may reach 18% of the adults in the South of Brazil. Our goal was to determine the frequency of T. gondii DNA in retinas from eye banks from different regions in Brazil. A total of 162 eyes were obtained from eye banks in Manaus (n = 60), Sao Paulo (n = 60), Chapeco (n = 26), and Joinville (n = 16)...
July 2017: Parasitology Research
https://www.readbyqxmd.com/read/28486633/development-of-a-murine-vertical-transmission-model-for-toxoplasma-gondii-oocyst-infection-and-studies-on-the-efficacy-of-bumped-kinase-inhibitor-bki-1294-and-the-naphthoquinone-buparvaquone-against-congenital-toxoplasmosis
#10
Joachim Müller, Adriana Aguado-Martínez, Luis-Miguel Ortega-Mora, Javier Moreno-Gonzalo, Ignacio Ferre, Matthew A Hulverson, Ryan Choi, Molly C McCloskey, Lynn K Barrett, Dustin J Maly, Kayode K Ojo, Wes Van Voorhis, Andrew Hemphill
Objectives: Establishment of a mouse model for congenital toxoplasmosis based on oral infection with oocysts from Toxoplasma gondii ME49 and its application for investigating chemotherapeutic options against congenital toxoplasmosis. Methods: CD1 mice were mated, orally infected with 5, 25, 100, 500 or 2000 oocysts and monitored for clinical signs and survival of dams and pups until 4 weeks post partum . The parasite burden in infected mice was quantified by real-time PCR in lungs, brains and, in the case of surviving pups, also in eyes...
May 9, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28481155/a-unique-case-series-of-autosomal-recessive-bestrophinopathy-exhibiting-multigenerational-inheritance
#11
Joshua S Hardin, G Bradley Schaefer, Ahmed B Sallam, M Kathryn Williams, Sami Uwaydat
INTRODUCTION: Autosomal recessive bestrophinopathy (ARB) is a retinal disease caused by biallelic mutations of the BEST1 gene. It has a variable phenotype with white flecks in the retina, multifocal yellow subretinal deposits, macular edema, choroidal neovascularization, hyperopia, and electrophysiological abnormalities. We describe a family with ARB and multigenerational inheritance. METHODS: Three generations of a Middle Eastern family (a woman, one son, and two grandchildren) were evaluated by our ocular genetics team...
May 8, 2017: Ophthalmic Genetics
https://www.readbyqxmd.com/read/28465107/seroprevalence-of-toxoplasma-gondii-in-humans-and-pigs-in-north-sulawesi-indonesia
#12
Josef Tuda, Sri Adiani, Madoka Ichikawa-Seki, Kousuke Umeda, Yoshifumi Nishikawa
Toxoplasma gondii, an intracellular protozoan parasite, is a major public health concern throughout the world. Importantly, toxoplasmosis has several adverse effects, including neurological and ocular diseases. There are currently no data on the prevalence of T. gondii infection in humans or animals in North Sulawesi, although Indonesia is known to have a high seroprevalence of this parasite. In this study, the prevalence of T. gondii was determined in samples of humans and pigs from North Sulawesi using the latex agglutination test...
May 2, 2017: Parasitology International
https://www.readbyqxmd.com/read/28448726/intravitreal-injection-of-sulfamethoxazole-and-trimethoprim-associated-with-dexamethasone-as-an-alternative-therapy-for-ocular-toxoplasmosis
#13
Carlos E Souza, Heloisa Nascimento, Acácio Lima, Cristina Muccioli, Rubens Belfort
PURPOSE: To evaluate intravitreal injections of sulfamethoxazole/trimethoprim in association with dexamethasone for treating toxoplasmic retinochoroiditis. METHODS: Thirteen patients with active, recurrent ocular focal toxoplasmic retinochoroiditis and visual acuity worse than 20/63 in the affected eye were included. Ocular toxoplasmosis was diagnosed according to the classic clinical findings. The primary end point was the change in the final best-corrected visual acuity (BCVA)...
April 27, 2017: Ocular Immunology and Inflammation
https://www.readbyqxmd.com/read/28418539/ophthalmic-manifestations-of-congenital-zika-syndrome-in-colombia-and-venezuela
#14
MULTICENTER STUDY
Juan B Yepez, Felipe A Murati, Michele Pettito, Carlos F Peñaranda, Jazmin de Yepez, Gladys Maestre, J Fernando Arevalo
Importance: The ocular manifestations and sequelae of Zika virus infection are not well known. Recently, the World Health Organization changed the declaration of Zika as a public health emergency and designated the viral outbreak and related microcephaly clusters as a long-term program of work. This change indicates the urgent need to evaluate and document ophthalmic manifestations in patients for timely management of this disease. In addition, confirmation whether the public health problem in Brazil extends to other regions in South America is needed...
May 1, 2017: JAMA Ophthalmology
https://www.readbyqxmd.com/read/28406972/disruption-of-outer-blood-retinal-barrier-by-toxoplasma-gondii-infected-monocytes-is-mediated-by-paracrinely-activated-fak-signaling
#15
Hyun Beom Song, Hyoung-Oh Jun, Jin Hyoung Kim, Young-Ha Lee, Min-Ho Choi, Jeong Hun Kim
Ocular toxoplasmosis is mediated by monocytes infected with Toxoplasma gondii that are disseminated to target organs. Although infected monocytes can easily access to outer blood-retinal barrier due to leaky choroidal vasculatures, not much is known about the effect of T. gondii-infected monocytes on outer blood-retinal barrier. We prepared human monocytes, THP-1, infected with T. gondii and human retinal pigment epithelial cells, ARPE-19, grown on transwells as an in vitro model of outer blood-retinal barrier...
2017: PloS One
https://www.readbyqxmd.com/read/28395298/cytokines-and-chemokines-involved-in-acute-retinal-necrosis
#16
Lenneke de Visser, Joke H de Boer, Ger T Rijkers, Karin Wiertz, Henk-Jan van den Ham, Rob de Boer, Anton M van Loon, Aniki Rothova, Jolanda D F de Groot-Mijnes
Purpose: To investigate which cytokines and chemokines are involved in the immunopathogenesis of acute retinal necrosis (ARN), and whether cytokine profiles are associated with clinical manifestations, such as visual outcome. Methods: Serum and aqueous humor (AH) samples of 19 patients with ARN were analyzed by multiplex immunoassay. Infectious controls consisted of 18 patients with rubella virus-associated Fuchs' uveitis and 20 patients with ocular toxoplasmosis all confirmed by intraocular fluid analyses...
April 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28329892/ocular-toxoplasmosis-therapy-related-adverse-drug-reactions-and-their-management
#17
M Helfenstein, S Zweifel, D Barthelmes, F Meier, J Fehr, C Böni
Background There are different treatment options for ocular toxoplasmosis (OT). "Classic" therapy consists of pyrimethamine, sulfadiazine and folinic acid combined with systemic steroids and is still widely used. However, potentially severe side effects of this therapy have been reported. The aim of this retrospective study was to evaluate the incidence and types of adverse drug reactions in patients treated for OT. Clinical management of each adverse drug reaction was assessed. Patients and Methods In this retrospective analysis, we reviewed data of patients with OT, who were consecutively examined between December 2011 and December 2015 at the Department of Ophthalmology, University Hospital Zurich...
April 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28283010/-effects-of-azithromycin-and-chlorella-vulgaris-treatment-on-certain-cytokine-values-and-nk-cell-activity-in-an-acute-murine-toxoplasmosis-model
#18
Deniz Gözde Çelik Payçu, Özden Büyükbaba Boral
Toxoplasmosis is a common infection with a complicated treatment process. Azithromycin (AZT) is a macrolide antibiotic that can be effectively used in patients with cerebral and ocular toxoplasmosis and has fewer side effects. Chlorella vulgaris (CV), a single-cell green algae that contains nutrients and has various biological effects. CV extract (CVE) has been shown to have protective effects against infections via immune enhancement by increasing the cytotoxicity of NK cells, IL-12 and IFN-γ levels. The aim of this study was to investigate the protective effects of AZT and CV, individually and in combination, against acute toxoplasmosis in mice, and their effects on NK cell cytotoxixity, IL-12, IFN-γ, and IL-2 levels...
January 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28274286/galectins-expressed-differently-in-genetically-susceptible-c57bl-6-and-resistant-balb-c-mice-during-acute-ocular-toxoplasma-gondii-infection
#19
S-J Chen, Y-X Zhang, S-G Huang, F-L Lu
Ocular toxoplasmosis (OT) caused by Toxoplasma gondii is a major cause of infectious uveitis, however little is known about its immunopathological mechanism. Susceptible C57BL/6 (B6) and resistant BALB/c mice were intravitreally infected with 500 tachyzoites of the RH strain of T. gondii. B6 mice showed more severe ocular pathology and higher parasite loads in the eyes. The levels of galectin (Gal)-9 and its receptors (Tim-3 and CD137), interferon (IFN)-γ, IL-6 and IL-10 were significantly higher in the eyes of B6 mice than those of BALB/c mice; however, the levels of IFN-α and -β were significantly decreased in the eyes and CLNs of B6 mice but significantly increased in BALB/c mice after infection...
March 9, 2017: Parasitology
https://www.readbyqxmd.com/read/28256490/retinal-imaging-with-smartphone
#20
D S Ademola-Popoola, V A Olatunji
BACKGROUND: The use of smartphones for various purposes among health professionals is increasing, especially with the availability of different applications. On account of cost, fundus cameras are not readily available in ophthalmic practice in developing countries. Since smartphones are readily available, easy to use and portable, they may present a cheap alternative in a resource-limited economy. AIM AND OBJECTIVES: to explore the use of smartphone (Blackberry Z-10) for retinal imaging in a resource-limited economy...
March 2017: Nigerian Journal of Clinical Practice
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