keyword
MENU ▼
Read by QxMD icon Read
search

Cutaneous immunohistochemistry

keyword
https://www.readbyqxmd.com/read/28225558/cutaneous-adnexal-adenocarcinoma-with-exquisite-sensitivity-to-trastuzumab
#1
Timothy J Brown, David J Sher, Lucien A Nedzi, Randall S Hughes, Muhammad S Beg, Jason Mull, Venetia R Sarode, Saad A Khan
BACKGROUND: Cutaneous adnexal adenocarcinoma is a rare cancer that is occasionally human epidermal growth factor receptor-2 (HER-2)-positive, and demonstrates variable response to HER-2 inhibitors. METHODS: We report a case of adnexal adenocarcinoma of the scalp in a 56-year-old man. He underwent wide local excision with cervical node dissection followed by radiation, but had extensive local recurrence. RESULTS: Pathology demonstrated a poorly differentiated adnexal adenocarcinoma with HER-2 overexpression by immunohistochemistry (IHC) and high HER-2 gene amplification by fluorescence in situ hybridization...
February 22, 2017: Head & Neck
https://www.readbyqxmd.com/read/28224222/immunopathological-characterization-of-human-cutaneous-leishmaniasis-lesions-caused-by-leishmania-viannia-spp-in-amazonian-brazil
#2
Cláudia Maria Castro Gomes, Maria Gloria Teixeira Sousa, Joyce Prieto Bezerra Menezes, Marliane Campos Batista, Ana Carolina Stocco Lima, Walter Belda, Daniel Bradshaw, Monica Elinor Alves Gama, Márcia Dalastra Laurenti, Fernando Tobias Silveira, Carlos Eduardo Pereira Corbett
American cutaneous leishmaniasis (ACL) is a chronic infectious disease caused by different protozoan species of Leishmania, and it is endemic in both tropical and subtropical countries. Using immunohistochemistry, we investigate the density of CD68(+), lysozyme(+), CD1a(+), factor XIIIa(+), CD4(+), CD8(+), CD56(+), interferon (IFN)-γ(+), and inducible NO synthase (iNOS(+)) cells. These cells were analyzed from 22 biopsy samples obtained from the lesions of ACL patients, whose infection was caused by Leishmania (Viannia) spp...
February 21, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28218707/fkbp51-immunohistochemical-expression-a-new-prognostic-biomarker-for-oscc
#3
Daniela Russo, Francesco Merolla, Massimo Mascolo, Gennaro Ilardi, Simona Romano, Silvia Varricchio, Virginia Napolitano, Angela Celetti, Loredana Postiglione, Pier Paolo Di Lorenzo, Luigi Califano, Giovanni Orabona Dell'Aversana, Fabio Astarita, Maria Fiammetta Romano, Stefania Staibano
Up-to-date, several molecular markers of prognosis have been studied in Oral Squamous Cell Carcinoma (OSCC), but none entered in the clinical setting. Therapy of OSCC tumors mainly relies on surgery, radiotherapy and partially on chemotherapy; there is an urgent need for biomarkers able to better stratify OSCC patients' risk to address targeted therapeutic strategies. The role of immune response in the pathogenesis and biological behavior of OSCC has been investigated by several authors, and promising results have been obtained with immune checkpoint inhibitors...
February 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28207936/th17-cells-and-neutrophils-close-collaborators-in-chronic-leishmania-mexicana-infections-leading-to-disease-severity
#4
Claudia Patricia Pedraza-Zamora, José Delgado-Domínguez, Jaime Zamora-Chimal, Ingeborg Becker
Cutaneous leishmaniasis caused by Leishmania mexicana is associated with an important inflammatory response. We here analyzed the kinetics of Th17 cells and neutrophils in earlobe lesions caused by Leishmania mexicana throughout 90 days of disease progresion in susceptible BALB/c and semi-resistant C57BL/6 mice infected with 1x10(5) Leishmania mexicana promastigotes. Cells in the lesions were extracted and quantified by flow cytometry, whereas their distribution in the tissues in relation to the parasites was analyzed by immunohistochemistry...
February 16, 2017: Parasite Immunology
https://www.readbyqxmd.com/read/28196283/detection-of-human-parvovirus-b19-dna-in-22-of-1-815-cutaneous-biopsies-of-a-wide-variety-of-dermatologic-conditions-suggests-viral-persistence-after-primary-infection-and-casts-doubts-on-its-pathogenic-significance
#5
C Santonja, A Santos-Briz, G Palmedo, H Kutzner, L Requena
BACKGROUND: Human parvovirus B19 (B19V) has been associated with a number of dermatologic and systemic conditions, including myocarditis and autoimmune syndromes. OBJECTIVES: To determine the frequency of B19V deoxyribonucleic acid (DNA) detection in a large dermatopathology practice, and to characterize the histopathologic patterns involved. METHODS: We selected for polymerase chain reaction (PCR) detection of B19V a total of 1,815 skin biopsies pertaining to entities allegedly related to Parvovirus B19, as well as cases suspected clinically of representing paraviral exanthemas...
February 14, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28195650/cell-tube-block-a-new-technique-to-produce-cell-blocks-from-fluid-cytology-samples
#6
Ricardo Marcos, Marta Santos, Carla Marrinhas, Mario Caniatti
BACKGROUND: Cell blocks are widely used in human cytopathology. Several techniques have been proposed to convert fluid specimens into solid material, which after embedding in paraffin can be used for histochemistry, immunohistochemistry, or molecular testing. In contrast, only in the last few years, have cell blocks begun to be used in the veterinary field. OBJECTIVES: The purpose of the study was to present the production and features of cell tube blocks (CTB) with veterinary liquid samples...
February 13, 2017: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/28170535/activation-of-p38-and-erk-mitogen-activated-protein-kinases-signaling-in-ocular-rosacea
#7
Edward J Wladis, Supraja Swamy, Alyssa Herrmann, Jinhong Yang, J Andrew Carlson, Alejandro P Adam
Purpose: Rosacea-related cutaneous inflammation is a common cause of ocular surface disease. Currently, there are no specific pharmacologic therapies to treat ocular rosacea. Here, we aimed at determining the differences in intracellular signaling activity in eyelid skin from patients with and without ocular rosacea. Methods: This was an observational, comparative case series including 21 patients undergoing lower lid ectropion surgery at one practice during 2013 and 2014 (18 patients with rosacea, 13 control patients), and 24 paraffin-embedded archival samples from Albany Medical Center, selected randomly (12 patients with rosacea, 12 control patients)...
February 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28153507/expression-of-p63-protein-in-anaplastic-large-cell-lymphoma-implications-for-genetic-subtyping
#8
Xueju Wang, Rebecca L Boddicker, Surendra Dasari, Jagmohan S Sidhu, Marshall E Kadin, William R Macon, Stephen M Ansell, Rhett P Ketterling, Karen L Rech, Andrew L Feldman
Anaplastic large cell lymphomas (ALCLs) are CD30-positive T-cell non-Hodgkin lymphomas that bear chromosomal rearrangements of the TP53 homologue, TP63, in a subset of cases that demonstrate aggressive clinical behavior. In the present study, we examined the relationship between p63 protein expression by immunohistochemistry and the results of fluorescence in situ hybridization (FISH) using TP63 probes in 116 ALCLs. We also determined the relative expression of full-length TAp63 and truncated ΔNp63 isoforms (e...
January 30, 2017: Human Pathology
https://www.readbyqxmd.com/read/28151793/igg4-expression-in-primary-cutaneous-marginal-zone-lymphoma-a-multicenter-study
#9
Aieska De Souza, Judith A Ferry, Daniel R Burghart, Marianne Tinguely, Amrita Goyal, Lyn M Duncan, Heinz Kutzner, Werner Kempf
BACKGROUND: Primary cutaneous marginal zone lymphoma (PCMZL) is the second most common B-cell lymphoma of the skin. A recent study has demonstrated a strikingly high prevalence of immunoglobulin (Ig)G4 expression in PCMZL with plasmacytic differentiation. OBJECTIVE: The objective was to investigate the incidence of IgG4 expression in PCMZL, and its correlation with clinical and immunophenotypic features. MATERIALS AND METHODS: Multicenter study that utilized immunohistochemistry and in-situ hybridization to evaluate the expression of IgG4, Ig light (κ and λ), and heavy chains (IgM, IgG), and the ratio of T (CD3+) and B (CD20+) cells in biopsy specimens from 30 patients with PCMZL and to correlate these findings with the clinical features...
February 1, 2017: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/28134738/generalized-leishmanides-in-an-immunodeprived-man
#10
Angel Fernandez-Flores, Aram Boada, Maria T Fernández-Figueras
Leishmanides have been rarely reported in the literature. In this study, the authors present a case of a 50-year-old HIV-positive man who developed a generalized cutaneous eruption of papules and plaques in which no microorganism was demonstrated by culture, microscopical examination, immunohistochemistry, or polymerase chain reaction. The patient was eventually diagnosed with laryngeal leishmaniasis, and when treated, the cutaneous lesions greatly improved.
February 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28134726/mutational-status-of-nras-and-braf-genes-and-protein-expression-analysis-in-a-series-of-primary-oral-mucosal-melanoma
#11
Ricardo Hsieh, Marcello M S Nico, Cláudia M C Camillo, Kátia K Oliveira, Martin Sangueza, Silvia V Lourenço
Primary oral mucosal melanoma is an extremely rare and aggressive tumor arising from melanocytes located in the mucosal epithelium of the oral cavity. Although malignant melanoma of oral mucosa shares some clinical features with its cutaneous counterpart, it has been associated with a worst prognosis; its etiopathogenesis are still only partially unraveled as there is no influence of UV radiation. It is known that the mitogen-activated protein kinase pathway mediates cellular responses to growth signals and its activation is an important phenomenon in melanoma...
February 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28133852/atypical-cutaneous-cryptococcosis-in-four-cats-in-the-usa
#12
Alexandra Myers, Courtney Meason-Smith, Joanne Mansell, Mark Krockenberger, Jeanine Peters-Kennedy, Harold Ross Payne, Aline Rodrigues Hoffmann
BACKGROUND: Cryptococcosis is an uncommon fungal infection in humans and mammals. Occasionally, cryptococcosis manifests as cutaneous lesions, either as an extension of nasal disease or as stand alone lesions unassociated with the nose. Histologically, these lesions are typically characterized by abundant organisms with mild granulomatous dermatitis. Herein, four feline cases of atypical cutaneous cryptococcal infections are described. METHODS: Skin punch biopsies from four client owned cats were submitted for histological evaluation between 2006 and 2015...
January 29, 2017: Veterinary Dermatology
https://www.readbyqxmd.com/read/28129097/expression-of-phosphorylated-kit-in-canine-mast-cell-tumor
#13
C H C Halsey, D H Thamm, K M Weishaar, J H Burton, J B Charles, D L Gustafson, A C Avery, E J Ehrhart
Canine cutaneous mast cell tumor (MCT) is the most common canine skin tumor and exhibits variable biologic behavior. Signaling through the KIT receptor tyrosine kinase promotes cellular proliferation and survival and has been shown to play a role in MCT progression. Despite investigations into numerous biomarkers and the proposal of several grading schemas, no single marker or grading system can accurately predict outcome in canine MCT. The first aim of this study was to develop an immunohistochemical assay to measure phosphorylated KIT (pKIT) to investigate its association with 2 commonly used grading systems and other established prognostic markers for canine MCT...
January 1, 2017: Veterinary Pathology
https://www.readbyqxmd.com/read/28125447/the-microenvironment-in-primary-cutaneous-melanoma-with-associated-spontaneous-tumor-regression-evaluation-for-t-regulatory-cells-and-the-presence-of-an-immunosuppressive-microenvironment
#14
Arielle Gray, Solomiya Grushchak, Kumaran Mudaliar, Stephanie Kliethermes, Kyle Carey, Kelli A Hutchens
Spontaneous tumor regression, regression in the absence of therapeutic intervention, can be identified histologically in over 25% of primary cutaneous melanomas at initial diagnosis. A unique subset of T lymphocytes found in areas of regression can be histologically distinguished from tumor-infiltrating T lymphocytes (TIL) found in areas of tumor progression. We call this unique subset of T lymphocytes regression-associated T lymphocytes (RATs). The aim of this study is to determine the phenotype of lymphocytes and the density of specific cell types linked to immunosuppression in areas of tumor progression compared with areas of tumor regression...
January 25, 2017: Melanoma Research
https://www.readbyqxmd.com/read/28119899/superficial-angiomyxoma-of-the-vulva-in-a-postmenopausal-woman-a-case-report-and-review-of-literature
#15
Seung Hyun Lee, Yeon Jean Cho, Myoungseok Han, Jong Woon Bae, Jung-Woo Park, So Ra Oh, Sujin Kim
Superficial angiomyxomas (SAMs) are rare benign cutaneous tumors that involve the subcutaneous layer. They are commonly located in the trunk, lower limbs and head or neck of women of reproductive age. SAMs in the vulva of postmenopausal women are especially rare case. Herein, we report a vulvar SAM in a postmenopausal 60-year-old woman. The patient presented with a palpable cutaneous mass in the right labium majora that had appeared 3 months earlier. The mass was slow growing and approximately 5 cm in size and resembled a soft tissue malignancy...
December 2016: Journal of Menopausal Medicine
https://www.readbyqxmd.com/read/28115669/characterization-of-the-histopathologic-features-in-patients-in-the-early-and-late-phases-of-cutaneous-leishmaniasis
#16
Maíra G Saldanha, Adriano Queiroz, Paulo Roberto L Machado, Lucas P de Carvalho, Phillip Scott, Edgar M de Carvalho Filho, Sérgio Arruda
Cutaneous leishmaniasis (CL), characterized by an ulcerated lesion, is the most common clinical form of human leishmaniasis. Before the ulcer develops, patients infected with Leishmania (Viannia) braziliensis develop a small papule at the site of the sandfly bite, referred to as early cutaneous leishmaniasis (E-CL). Two to four weeks later the typical ulcer develops, which is considered here as late CL (L-CL). Although there is a great deal known about T-cell responses in patients with L-CL, there is little information about the in situ inflammatory response in E-CL...
January 23, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28107865/adipose-tissue-derived-stem-cells-ameliorates-dermal-fibrosis-in-a-mouse-model-of-scleroderma
#17
Wei Chen, Zhi-Kuan Xia, Man-Hui Zhang, Gui-Chun Ding, Xiao-Yan Zhang, Zheng-Xu Wang, Rong-Ya Yang
OBJECTIVE: To investigate the therapeutic potential of adipose-derived stem cells (ADSCs) for limited cutaneous scleroderma (LS) in mouse models. METHODS: ADSCs were isolated from pathogen-free female C57BL/6 mice and LS was induced in wild type (WT) C57BL/6 mice via daily injection of bleomycin (0.1 mL × 300 μg/mL) for 4 weeks; then the ADSCs were subcutaneously injected into the dorsal area in the model treatment group, and 100 μL of phosphate-buffered saline (PBS) solution was injected into the same site in the model control group...
January 2017: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28101356/a-case-report-of-primary-cutaneous-natural-killer-t-cell-lymphoma
#18
Chen Tian, Yong Yu, Yizhuo Zhang
Primary cutaneous extranodal natural killer/T-cell lymphoma, nasal type (ENKL-NT) is a relatively rare disease associated with aggressive tumor-cell behavior and poor prognosis. Progress in immunohistochemistry has improved the identification of ENKL-NT. The present case study reported on a 64-year-old female patient presenting with several red nodular lesions on the neck developed over four months. Cutaneous biopsy revealed these cells were positive for CD3, CD56, CD5, CD8 and negative for CD2, CD34, CD7, CD20 and Granzyme B...
December 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28079637/ln2-cd10-and-ezrin-do-not-distinguish-between-atypical-fibroxanthoma-and-undifferentiated-pleomorphic-sarcoma-or-predict-clinical-outcome
#19
Allison Hanlon, Thomas Stasko, Dan Christiansen, Nika Cyrus, Anjela Galan
BACKGROUND: Atypical fibroxanthoma (AFX) is a rare cutaneous spindled cell neoplasm. For both diagnostic and therapeutic purposes, it is important to distinguish AFX from other poorly differentiated tumors, including undifferentiated pleomorphic sarcoma (UPS). OBJECTIVE: The authors aimed to identify the clinical, histologic, and immunohistochemical expression of LN2, ezrin, and CD10 in AFX and UPS tumors. METHODS AND MATERIALS: The authors retrospectively examined the charts of patients with AFX and UPS treated with Mohs micrographic surgery (MMS) at 2 academic institutions...
January 10, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28074480/clonal-reticulohistiocytosis-of-the-skin-and-bone-marrow-associated-with-systemic-mastocytosis-and-acute-myeloid-leukaemia
#20
Nicola Fusco, Arturo Bonometti, Claudia Augello, Sonia Fabris, Leonardo Boiocchi, Stefano Fiori, Denise Morotti, Nicola Fracchiolla, Emilio Berti, Umberto Gianelli
AIMS: The aims of this study were to define whether diffuse cutaneous reticulohistiocytosis could be underpinned by somatic genetic alterations and represent precursor to more aggressive forms of disease. METHODS AND RESULTS: A 59-year-old man with diffuse cutaneous reticulohistiocytosis, experienced bone marrow localisation of the disease, with associated systemic mastocytosis and acute myeloid leukaemia. Cytogenetic analyses of the bone marrow aspirate revealed the presence of a derivative chromosome giving rise to a partial trisomy of chromosome 1q and a partial monosomy of chromosome 9q...
January 11, 2017: Histopathology
keyword
keyword
34820
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"