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Cutaneous immunohistochemistry

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https://www.readbyqxmd.com/read/29790013/effect-of-photobiomodulation-670-nm-associated-with-vitamin-a-on-the-inflammatory-phase-of-wound-healing
#1
A N Otterço, P Brassolatti, A L M Andrade, L R S Avó, P S Bossini, N A E Parizotto
Wound healing is a complex biological process with specific phases. Photobiomodulation (PBM) decreases the inflammatory infiltrate, stimulating fibroblast proliferation and angiogenesis, and therefore, is indicated for wound healing. Vitamin A is used to reverse the inhibitory effects on wound healing and accelerate the healthy granulation tissue. The study aimed to evaluate the effect of topical vitamin A and PBM (GaAlAs) in inflammatory phase of cutaneous wounds. Forty Wistar male rats were separated into four groups: (1) control (CG); (2) laser group (LG) GaAlAs, 670 nm, 30 mW, energy per point of 0...
May 22, 2018: Lasers in Medical Science
https://www.readbyqxmd.com/read/29787429/first-insights-into-the-m2-inflammatory-response-after-adipose-tissue-derived-stem-cell-injections-in-radiation-injured-muscles
#2
Diane Riccobono, Krisztina Nikovics, Sabine François, Anne-Laure Favier, Nicolas Jullien, Gerrit Schrock, Harry Scherthan, Michel Drouet
The cutaneous radiation syndrome is the clinical consequence of local high-dose irradiation. It is characterized by extensive inflammation, necrosis, and poor revascularization of the skin, resulting in muscle inflammation and fibrosis. Based on these physiopathological processes, subcutaneous injections of adipose-tissue-derived stem/stromal cells have shown favorable effects on skin-wound healing in a minipig model of cutaneous radiation syndrome, in which muscle fibrosis persisted. Since fibrosis is mainly due to the inflammatory processes that often affect underlying tissues as well, the beneficial effects of intramuscular injections of adipose-tissue-derived stem/stromal cells on tissue recovery were evaluated...
July 2018: Health Physics
https://www.readbyqxmd.com/read/29785566/delineating-a-new-feature-of-constitutional-mismatch-repair-deficiency-cmmrd-syndrome-breast-cancer
#3
Lisa Bush, Melyssa Aronson, Uri Tabori, Brittany B Campbell, Raymond B Bedgood, Kory Jasperson
Constitutional mismatch repair deficiency (CMMRD) syndrome is a rare autosomal recessive hereditary cancer condition, characterized by an exceptionally high risk of cancer, a propensity for childhood malignancies, and cutaneous features reminiscent of neurofibromatosis type 1 (NF1). We report on two sisters originally suspected of having CMMRD syndrome due to their history of colonic polyps and NF1 associated skin findings, both were subsequently found to have biallelic MSH6 mutations. After years of CMMRD syndrome follow-up, the proband was diagnosed with breast cancer at age 29, while her sister was diagnosed with a glioblastoma at age 27...
May 21, 2018: Familial Cancer
https://www.readbyqxmd.com/read/29774030/changes-in-the-tcr%C3%AE-repertoire-and-tumor-immune-signature-from-a-cutaneous-melanoma-patient-immunized-with-the-csf-470-vaccine-a-case-report
#4
Mariana Aris, Alicia Inés Bravo, María Betina Pampena, Paula Alejandra Blanco, Ibel Carri, Daniel Koile, Patricio Yankilevich, Estrella Mariel Levy, María Marcela Barrio, José Mordoh
The allogeneic therapeutic vaccine CSF-470 has demonstrated a significant benefit over medium-dose IFNα2b in the distant metastasis-free survival for stages IIB-IIC-III cutaneous melanoma patients in a randomized phase II/III clinical trial (CASVAC-0401, NCT01729663). At the end of the 2-year CSF-470 immunization protocol, patient #006 developed several lung and one subcutaneous melanoma metastases; this later was excised. In this report, we analyzed the changes throughout vaccination of immune populations in blood and in the tumor tissue, with special focus on the T-cell repertoire...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29754886/langerhans-cell-histiocytosis-in-children-diagnosis-differential-diagnosis-treatment-sequelae-and-standardized-follow-up
#5
REVIEW
Jolie Krooks, Milen Minkov, Angela G Weatherall
A definitive diagnosis of Langerhans cell histiocytosis (LCH) requires a combination of clinical presentation, histology, and immunohistochemistry. The inflammatory infiltrate contains various proportions of LCH cells, the disease hallmark, which are round and have characteristic "coffee-bean" cleaved nuclei and eosinophilic cytoplasm. Positive immunohistochemistry staining for CD1a and CD207 (langerin) are required for a definitive diagnosis. Isolated cutaneous disease should only be treated when symptomatic, because spontaneous resolution is common...
June 2018: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/29743809/evaluation-of-regulatory-immune-response-in-skin-lesions-of-patients-affected-by-nonulcerated-or-atypical-cutaneous-leishmaniasis-in-honduras-central-america
#6
Gabriela Venicia Araujo Flores, Carmen Maria Sandoval Pacheco, Thaise Yumie Tomokane, Wilfredo Sosa Ochoa, Concepción Zúniga Valeriano, Claudia Maria Castro Gomes, Carlos Eduardo Pereira Corbett, Marcia Dalastra Laurenti
In Honduras, Leishmania (L.) infantum chagasi causes both visceral leishmaniasis (LV) and nonulcerated or atypical cutaneous leishmaniasis (NUCL). NUCL is characterized by mononuclear inflammatory infiltration of the dermis, composed mainly of lymphocytes followed by macrophages with discrete parasitism. Considering that little is known about the pathogenesis of NUCL, the aim of this study was to evaluate the regulatory response in situ in skin lesions of patients affected by NUCL. Biopsies ( n = 20) from human cutaneous nonulcerative lesions were collected and processed by usual histological techniques...
2018: Mediators of Inflammation
https://www.readbyqxmd.com/read/29736880/comparison-of-peripheral-nerve-protection-between-insulin-based-glucose-control-and-alpha-lipoic-acid-ala-in-the-streptozotocin-stz-induced-diabetic-rat
#7
Kyung Ae Lee, Na Young Lee, Tae Sun Park, Heung Yong Jin
Strict glucose control is a well-proven therapeutic approach for peripheral neuropathies in patients with diabetes. Alpha lipoic acid (ALA) has also been accepted as a therapeutic agent for diabetic peripheral neuropathy (DPN) in the respect of pathogenesis. However, the potential of ALA as a treatment for DPN in comparison to that of glucose control is unclear. In this study, we compared the neuroprotective potential of glucose control and ALA. Animals were divided into 6 groups based on the intervention used, as follows: normal, diabetes (DM), DM+racemic form of ALA, DM+R form of ALA, DM+once daily insulin glargine, and DM+once daily insulin glargine with twice daily insulin glulisine...
May 7, 2018: Endocrine
https://www.readbyqxmd.com/read/29734141/innervation-of-the-human-incisive-papilla-comparison-with-other-oral-regions
#8
Chiaki Endo, Tadasu Sato, Takehiro Yajima, Kaoru Igarashi, Hiroyuki Ichikawa
Immunohistochemistry for several neurochemical substances was performed on the human incisive papilla and other oral structures. Sodium channel alpha subunit 7 (SCN7A) protein-immunoreactive (IR) Schwann cells and protein gene product 9.5 (PGP 9.5)-IR nerve fibers made nerve plexuses beneath the epithelium of the palate, including the incisive papilla, tongue, and lip. SCN7A immunoreactivity could also be detected in lamellated and nonlamellated capsules of corpuscle endings. Lamellated SCN7A-IR corpuscle endings were mostly restricted to the mucous and cutaneous lips...
May 7, 2018: Cells, Tissues, Organs
https://www.readbyqxmd.com/read/29723382/what-does-the-4th-edition-of-the-world-health-organization-classification-of-head-and-neck-tumors-2017-bring-new-about-mucosal-melanomas
#9
José Cândido Caldeira Xavier Júnior, Juliana Polizel Ocanha-Xavier
The recently published 4th Edition of the World Health Organization Classification of Head and Neck Tumors addresses the most relevant and updated aspects of tumor biology, including clinical presentation, histopathology, immunohistochemistry, and prognosis of head and neck tumors. The objective of the present study is to compare these updates to the 3rd edition of that book with regard to mucosal melanomas and to highlight the potential factors that differ those tumors from cutaneous melanomas. We observed progress in the understanding of oral and sinonasal mucosal melanomas, which also present themselves, in the molecular scope, differently form cutaneous melanomas...
March 2018: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/29723365/lymphoepithelioma-like-carcinoma-of-the-skin
#10
Cristiano Claudino Oliveira, Vinicius Cardoso Nóbrega, Mariângela Esther Alencar Marques
Primary cutaneous lymphoepithelioma-like carcinoma is a rare disease with low metastatic potential. Its morphologic and pathological features are similar to those of nasopharyngeal lymphoepithelial carcinoma. We report the case of a 60-year-old man with an infrapalpebral pearly papule, measuring 0.6 cm in diameter. The lesion was excised with a clinical hypothesis of basal cell carcinoma or squamous cell carcinoma. Histopathological analysis revealed a malignant neoplasm with syncytial arrangement of cells with vesicular nuclei, associated with dense lymphocytic infiltrate...
March 2018: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/29723357/cutaneous-leiomyosarcoma-on-the-face
#11
Nathalia Dias Negrão Murback, Luiz C Takita, Bruna Corrêa de Castro, Gunter Hans Filho
Leiomyosarcoma is a rare skin tumor, most common in white men in the fifth to eighth decades of life. Primary tumors are classified in dermal or subcutaneous, that differ by clinical and prognostic features. They may appear on any site of the body, but are rare on the face. A 54-year-old female was admitted with a 5cm exophytic nodular lesion of 8 months duration on the right cheek, site of previous chronic radiodermatitis. Histopathology revealed spindle-shaped cell neoplasia, positive for smooth muscle actin on immunohistochemistry...
March 2018: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/29718441/prevalence-and-molecular-characteristics-of-dna-mismatch-repair-protein-deficient-sebaceous-neoplasms-and-keratoacanthomas-in-a-japanese-hospital-based-population
#12
Kouki Kuwabara, Okihide Suzuki, Noriyasu Chika, Kensuke Kumamoto, Toshiharu Minabe, Tomoo Fukuda, Eiichi Arai, Jun-Ichi Tamaru, Kiwamu Akagi, Hidetaka Eguchi, Yasushi Okazaki, Hideyuki Ishida
Background: Muir-Torre syndrome (MTS) is currently considered as a clinical variant of Lynch syndrome (LS). The clinical significance of the screening of patients with MTS-associated cutaneous tumors for the identification of LS has not yet been established. In addition, the prevalence and molecular characteristics of mismatch repair (MMR) protein deficiency in such tumors has scarcely been investigated in the Japanese population. Methods: Immunohistochemistry (IHC) for MMR proteins (MLH1, MSH2, MSH6 and PMS2) was performed in formalin-fixed paraffin-embedded sections prepared from 16 sebaceous neoplasms (SNs) resected from 13 patients and 32 keratoacanthomas (KAs) resected from 31 patients at our institution between January 2005 and March 2014...
April 28, 2018: Japanese Journal of Clinical Oncology
https://www.readbyqxmd.com/read/29717505/diagnostic-accuracy-of-whole-slide-imaging-for-cutaneous-soft-tissue-and-melanoma-sentinel-lymph-node-biopsies-with-and-without-immunohistochemistry
#13
Michael R Sargen, Kevin M Luk, Benjamin K Stoff, Jaime MacKelfresh, Samit Patrawala, Chao Zhang, David Gutman, Suephy C Chen
Skin biopsies requiring expert dermatopathology review are likely to increase in future years as a result of an aging U.S. population, which is projected to significantly increase demand for dermatologic care.(1-4) As a result, differentiating between benign and malignant cutaneous neoplasms or evaluating an inflammatory condition may require consultation with dermatopathologists at distant laboratories.
May 1, 2018: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/29697102/differential-reorganisation-of-cutaneous-elastic-fibres-a-comparison-of-the-in-vivo-effects-of-broadband-ultraviolet-b-versus-solar-simulated-radiation
#14
Nisamanee Charoenchon, Lesley E Rhodes, Suzanne M Pilkington, Mark D Farrar, Rachel E B Watson
Long-term exposure of human skin to ultraviolet radiation (UVR) in sunlight negatively impacts its appearance and function with photoaged skin having a characteristic leathery, rough appearance, with deep wrinkles. These clinical features of photodamage are thought to result from UVR-induced remodelling of the dermal extracellular matrix, particularly the elastic fibre system. There are few in vivo human data on the impact of acute UVR exposure on this fibre system and particularly solar-simulated radiation (SSR)-mediated effects...
April 26, 2018: Photochemical & Photobiological Sciences
https://www.readbyqxmd.com/read/29692595/unusual-presentation-of-renal-cell-carcinoma-a-rare-case-report
#15
Manjari Kishore, Devender Singh Chauhan, Shruti Dogra
Cutaneous and intraoral metastasis from any malignancy is not common. Cutaneous spread is usually noted in 5%-10% of high-grade malignancies, as in carcinoma breast, lung, colon, ovary, and malignant melanoma. Only 4.6% cases of cutaneous spread are from renal cell carcinoma (RCC). Intraoral spread from RCC is much rarer with an incidence of approximately 1% of all malignant oral tumors, noted sometimes in tongue, palate, buccal mucosa, gingiva, and lips. RCC is a highly aggressive tumor which requires early diagnosis for increasing the chance of cure...
April 2018: Journal of Laboratory Physicians
https://www.readbyqxmd.com/read/29687929/a-tale-of-two-clones-caldesmon-staining-in-the-differentiation-of-cutaneous-spindle-cell-neoplasms
#16
Emily M Beck, Tyler M Bauman, Ilana S Rosman
BACKGROUND: We sought to compare the sensitivity and specificity of two different caldesmon antibodies in differentiating leiomyosarcoma from other cutaneous spindle cell neoplasms. METHODS: Representative cutaneous spindle cell neoplasms were identified, including leiomyosarcoma, atypical fibroxanthoma, dermatomyofibroma, and spindle cell squamous cell carcinoma. Immunohistochemistry was performed with antibodies directed towards caldesmon, smooth-muscle actin (SMA), and desmin...
April 17, 2018: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/29684717/photobiomodulation-mechanisms-in-the-kinetics-of-the-wound-healing-process-in-rats
#17
A N Otterço, A L Andrade, P Brassolatti, K N Z Pinto, H S S Araújo, N A Parizotto
OBJECTIVES: The healing process of cutaneous lesions is considered a complex event divided into distinct and overlapping phases, which responds satisfactorily to photobiomodulation (PBM). PBM is indicated as a therapeutic resource capable of assisting tissue repair. The present study aimed to analyze the kinetics of cutaneous wounds healing process after application of the GaAlAs laser for treating wounds on the dorsum of rats. MATERIALS AND METHODS: This study was approved by the Animal Ethics Committee of UFSCar...
April 8, 2018: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29676381/ectopic-hidradenoma-papilliferum-of-eyelid-a-rare-entity-with-diagnostic-challenge
#18
Prakriti Shukla, Anil K Malaviya
Hidradenoma papilliferum is a rare cutaneous adnexal tumour of middle aged females arising mainly in the apocrine sweat glands of perianal and genital region. Ectopic forms of this entity have been described with majority of them occurring on the head and neck region. We report a case of 16 years young male who presented with two small, well circumscribed, greyish-brown, firm, nodules on his left upper and lower eyelid. A clinical impression of basal cell carcinoma was assumed but on histopathological examination it was diagnosed as hidradenoma papilliferum of eyelid...
April 2018: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/29665991/differential-proteomic-analysis-of-actinic-keratosis-bowen-s-disease-and-cutaneous-squamous-cell-carcinoma-by-label-free-lc-ms-ms
#19
Ali Azimi, Kimberley L Kaufman, Marina Ali, Jonathan Arthur, Steven Kossard, Pablo Fernandez-Penas
BACKGROUND: The boundaries between actinic keratosis (AK), Bowen's disease (BD), and cutaneous squamous cell carcinoma (cSCC) are sometimes not clear. Large-scale proteomic profiling studies of these lesions are also non-existent. OBJECTIVE: To evaluate proteomic changes between normal epidermis, AK, BD and cSCC that could support a molecular classification and improve our understanding of disease progression. METHODS: Microdissected formalin-fixed paraffin embedded samples of normal epidermis (n = 4, pooled), AK (n = 10), BD (n = 10) and cSCC (n = 10) were analyzed by mass spectrometry...
April 10, 2018: Journal of Dermatological Science
https://www.readbyqxmd.com/read/29660567/summary-of-expression-of-sparc-protein-in-cutaneous-vascular-neoplasms-and-mimickers
#20
Shakuntala H Mauzo, Denái R Milton, Victor G Prieto, Carlos A Torres-Cabala, Wei-Lien Wang, Nitin Chakravarti, Priyadharsini Nagarajan, Michael T Tetzlaff, Jonathan L Curry, Doina Ivan, Robert E Brown, Phyu P Aung
BACKGROUND: Serum protein acidic and rich in cysteine (SPARC) is a matricellular glycoprotein, which regulates cell proliferation and facilitates intracellular transport of albumin bound particles including chemotherapeutic agents such as Nab-paclitaxel/ABI-007. Therefore the presence of SPARC may achieve higher intra-tumoral drug concentration with lower dosage and thus reduce systemic side-effects. Several trials of ABI-007, in melanoma, show promising clinical activity. DESIGN: Fifty-four cases of dermal based neoplasms were retrieved including 24 angiosarcomas (AS), 10 hemangiomas, 9 nodular melanomas, 4 Kaposi sarcomas (KS), 3 leiomyosarcomas (LMS), 3 atypical fibroxanthomas (AFX) and 1 spindle cell squamous cell carcinoma (SSCC)...
March 15, 2018: Annals of Diagnostic Pathology
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