Try a new search

Format these results:

Searched for:

person:johnsb15

in-biosketch:true

Total Results:

9


Diagnostic and Therapeutic Challenge

Wilkins, Carl S; Goduni, Lediana; Dedania, Vaidehi S; Modi, Yasha S; Johnson, Brandon; Mehta, Nitish; Weng, Christina Y
PMID: 32332425
ISSN: 1539-2864
CID: 4411532

Choroidal Vascular Changes in Acute Idiopathic Maculopathy as Demonstrated by Multimodal Imaging including Optical Coherence Tomography Angiography [Case Report]

Khundkar, Tahsin; Hasan, Syed R; Breazzano, Mark P; Mei, Constance; Johnson, Brandon B
PMCID:8046551
PMID: 33880196
ISSN: 2090-6722
CID: 4996502

Multimodal Imaging of Isolated Choroidal Infarction Following Injection of Facial Filler

Sherwood, Pamela; Goduni, Lediana; Khundkar, Tahsin; Johnson, Brandon; Erickson, Benjamin; Modi, Yasha
PMID: 31120479
ISSN: 2168-6173
CID: 4000072

DISTINCTIVE WHITE FUNDUS LESIONS IN FAMILIAL EXUDATIVE VITREORETINOPATHY: A NEWLY CHARACTERIZED CLINICAL FEATURE

Johnson, Brandon B; Hubbard, George B 3rd; Mendoza, Pia R; Grossniklaus, Hans E
PURPOSE: To report a novel clinical finding associated with familial exudative vitreoretinopathy in three patients using fundus photography, fluorescein angiography, and histopathology. METHODS: Observational case series of three patients with familial exudative vitreoretinopathy, an ophthalmic examination with fundus photography, and fluorescein angiography were used to document clinical findings between January 2007 and January 2015. Surgical specimens from one case were examined using standard histopathologic techniques, as well as transmission electron microscopy and energy dispersive x-ray analysis. RESULTS: Distinctive white preretinal granules were noted in all cases and were found to be extramacular in location. Histopathology in one case revealed the granules to be crystalline structures with a regular pattern evident on higher magnification. The chemical constitution was found to be carbon, oxygen, and fluorine. CONCLUSION: Our case series represents the first description of white preretinal granules in association with familial exudative vitreoretinopathy. The authors have not seen these granules in other forms of retinopathy and their presence may aid in differentiating this disease from other entities.
PMID: 27648585
ISSN: 1937-1578
CID: 2802122

Retinal Hemangioblastoma and Syrinx in von Hippel-Lindau Disease

Berdia, Jay; Johnson, Brandon B; Hubbard, G Baker 3rd
PMID: 28225727
ISSN: 1539-2864
CID: 2802112

Diagnostic and Therapeutic Challenges [Case Report]

Wang, Jing G; Johnson, Brandon B; Sobrin, Lucia
PMID: 27046455
ISSN: 1539-2864
CID: 2802132

Traumatic Submacular Hemorrhage with Macular Hole Repaired by Pneumatic Displacement and Intravitreal t-PA Injection

Mehta, Amy A; Berdia, Jay; Wagner, Lilly H; Choi, Irene; Johnson, Brandon B
This paper presents a case demonstrating repair of traumatic macular hole and submacular hemorrhage with intravitreal gas tamponade and t-PA in an office setting.
PMCID:5485294
PMID: 28695031
ISSN: 2090-6722
CID: 2802102

Frontal Sinus Mucocele Diagnosed by Fundus Examination and B-Mode Ultrasonography [Case Report]

Wagner, Lilly H; Reich, Shani S; Johnson, Brandon B
PMID: 26270407
ISSN: 2168-6173
CID: 2802142

Heat-resistant agglutinin 1 is an accessory enteroaggregative Escherichia coli colonization factor

Bhargava, Samhita; Johnson, Brandon B; Hwang, Jennifer; Harris, Tamia A; George, Anu S; Muir, Amanda; Dorff, Justin; Okeke, Iruka N
Enteroaggregative Escherichia coli (EAEC) is an important cause of acute and persistent diarrhea. The defining stacked brick adherence pattern of Peruvian EAEC isolate 042 has previously been attributed to aggregative adherence fimbriae II (AAF/II), which confer aggregative adherence on laboratory E. coli strains. EAEC strains also show exceptional autoaggregation and biofilm formation, other phenotypes that have hitherto been ascribed to AAF/II. We report that EAEC 042 carries the heat-resistant agglutinin (hra1) gene, also known as hek, which encodes an outer membrane protein. Like AAF/II, the cloned EAEC 042 hra1 gene product is sufficient to confer autoaggregation, biofilm formation, and aggregative adherence on nonadherent and nonpathogenic laboratory E. coli strains. However, an 042 hra1 deletion mutant is not deficient in these phenotypes compared to the wild type. EAEC strain 042 produces a classic honeycomb or stacked brick pattern of adherence to epithelial cells. Unlike wild-type 042, the hra1 mutant typically does not form a tidy stacked brick pattern on HEp-2 cells in culture, which is definitive for EAEC. Moreover, the hra1 mutant is significantly impaired in the Caenorhabditis elegans slow kill colonization model. Our data suggest that the exceptional colonization of strain 042 is due to multiple factors and that Hra1 is an accessory EAEC colonization factor.
PMCID:2715708
PMID: 19482929
ISSN: 1098-5530
CID: 2800092