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Skin AND histology

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https://www.readbyqxmd.com/read/27923810/durability-of-three-different-types-of-hyaluronic-acid-fillers-in-skin-are-there-differences-among-biphasic-monophasic-monodensified-and-monophasic-polydensified-products
#1
Adilson da Costa, Danilo Guerreiro Zeolo Biccigo, Ellem Tatiani de Souza Weimann, Larissa Mondadori Mercadante, Paulo Roberto Grimaldi Oliveira, Stefânia Bazanelli Prebianchi, Beatrice Martinez Zugaib Abdalla
BACKGROUND: Hyaluronic acid fillers are used for facial rejuvenation and are classified as non-cross-linked or cross-linked (monophasic mono- or polydensified). OBJECTIVES: To histologically assess the intradermal durability of three types of fillers (biphasic, monophasic monodensified, and monophasic polydensified), to compare the durability of the products over 6 months, and to evaluate the structural changes after application. METHODS: In all, 25 volunteers received injections of three different fillers in the dermis of the right lumbar region (in one line), and equal amounts of the fillers were injected into three different sites (in the same column), yielding nine points of application in each patient...
December 6, 2016: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/27922431/a-multicentre-study-of-the-precision-and-accuracy-of-the-truslice-and-truslice-digital-histological-dissection-devices
#2
G E Orchard, M Shams, T Nwokie, P Fernando, C Bulut, C J Quaye, J Gabriel, Z Ramji, A Georgaki, M Watt, Z Cole, K Stewart, V McTaggart, S Padayachy, A M Long, A Ogden, C Andrews, A Birchall, F Shams, H Neesam, N Haine
BACKGROUND: Five key factors enabling a good surgical grossing technique include a flat uniformly perpendicular specimen cutting face, appropriate immobilisation of the tissue specimen during grossing, good visualisation of the cutting tissue face, sharp cutting knives and the grossing knife action. TruSlice and TruSlice Digital are new innovative tools based on a guillotine configuration. The TruSlice has plastic inserts whilst the TruSlice Digital has an electronic micrometre attached: both features enable these dissection factors to be controlled...
October 2016: British Journal of Biomedical Science
https://www.readbyqxmd.com/read/27920683/squamous-cell-carcinoma-in-african-children-with-xeroderma-pigmentosum-three-case-reports
#3
Mamadou Kaloga, Pauline Dioussé, Boubacar Ahy Diatta, Mariama Bammo, Sarah Kourouma, Almamy Diabate, Ndiaga Gueye, Haby Dione, Moussa Diallo, Bernard Marcel Diop
INTRODUCTION: Xeroderma pigmentosum is a rare autosomal recessive genetic disease. This disease predisposes patients to early-onset skin cancers, particularly squamous cell carcinoma. Here, we report 3 pediatric cases, including 2 deaths. OBSERVATION: The subjects included 2 boys and 1 girl with skin type VI. All subjects were from consanguineous marriages, and the average age was 7.6 years. The patients all had ulcerative budding tumor lesions in the cephalic region, and the mean disease duration was 18 months...
September 2016: Case Reports in Dermatology
https://www.readbyqxmd.com/read/27920565/electrochemotherapy-induces-apoptotic-death-in-melanoma-metastases-a-histologic-and-immunohistochemical-investigation
#4
Laura Bigi, Giovanna Galdo, Anna Maria Cesinaro, Cristina Vaschieri, Alessandra Marconi, Carlo Pincelli, Fabrizio Fantini
BACKGROUND: Electrochemotherapy (ECT) is increasingly used in the treatment of primary and secondary skin tumors, but little is known about the pathologic mechanism responsible for tumor cell destruction in humans. Knowledge of detailed mechanism of host response after ECT may improve the treatment efficacy related to patient selection and technique refinements. AIM: The aim of the study was to investigate the histopathology and mechanism of cell death after ECT in cutaneous melanoma metastases...
2016: Clinical, Cosmetic and Investigational Dermatology
https://www.readbyqxmd.com/read/27919431/immunoreactivities-of-nf-%C3%AE%C2%BAb-il-1%C3%AE-and-il-1r-in-the-skin-of-chinese-brown-frog-rana-dybowskii
#5
Liqin Xi, Ruiqi Hu, Ting Guo, Yuhan Wang, Xia Sheng, Yingying Han, Zhengrong Yuan, Qiang Weng, Meiyu Xu
The cytokine interleukin-1 beta (IL-1β) is an evolutionarily conserved molecule that was originally identified in the immune system. Nuclear factor κB (NF-κB) plays a critical role in the activation of immune cells by upregulating the expression of many cytokines. In this study, we investigated the localization and expression level of IL-1β, its functional membrane receptor type I (IL-1R1) and NF-κB in the skin of Rana dybowskii during the breeding period and pre-hibernation. Histologically, the skin of Rana dybowskii consists of epidermis and dermis, and four kinds of cells were identified in the epidermis during the breeding period and pre-hibernation, while the dermis was composed of homogenous gel, mucous glands and granular glands...
December 2, 2016: Acta Histochemica
https://www.readbyqxmd.com/read/27917823/3d-bioprinting-of-functional-human-skin-production-and-in-vivo-analysis
#6
Nieves Cubo, Marta Garcia, Juan F Del Cañizo, Diego Velasco, Jose L Jorcano
Significant progress has been made over the past 25 years in the development of in vitro-engineered substitutes that mimic human skin, either to be used as grafts for the replacement of lost skin, or for the establishment of in vitro human skin models. In this sense, laboratory-grown skin substitutes containing dermal and epidermal components offer a promising approach to skin engineering. In particular, a human plasma-based bilayered skin generated by our group, has been applied successfully to treat burns as well as traumatic and surgical wounds in a large number of patients in Spain...
December 5, 2016: Biofabrication
https://www.readbyqxmd.com/read/27916753/-diagnosis-of-idiopathic-inflammatory-myopathy-a-muscle-pathology-perspective
#7
Michio Inoue, Ichizo Nishino
Idiopathic inflammatory myopathies are historically classified into polymyositis and dermatomyositis based on the presence or absence of skin lesions. Recently, however, a more histology-oriented classification into 6 subtypes has been proposed. The subtypes include dermatomyositis, polymyositis, inclusion body myositis, immune-mediated necrotizing myopathy, anti-synthetase syndrome, and non-specific myositis. With strict criteria applied, polymyositis is now extremely rare, while immune-mediated necrotizing myopathy is the most common among all inflammatory myopathies and is often associated with autoantibodies including those for signal recognition particle (SRP) or 3-hydroxy-3-methylglutaryl-coenzyme A reductase (HMGCR)...
December 2016: Brain and Nerve, Shinkei Kenkyū No Shinpo
https://www.readbyqxmd.com/read/27916351/circumflex-scapular-artery-myocutaneous-and-or-vascularized-scapular-chimeric-flap
#8
Arzu Akcal, Tahsin Gorgulu, Seckin Aydin Savas, Mehmet Af Akcal, Mehmet Can Ubur, Cumhur Ibrahim Bassorgun
BACKGROUND: Chimeric osteomyocutaneous flaps harvested from the subscapular artery system have been used in clinical practice. We describe the use of a novel circumflex scapular artery myocutaneous and/or vascularized scapular chimeric flap in a rat model and demonstrate optimal skin flap dimensions. MATERIALS AND METHODS: An 8 × 4-cm-rectangular skin flap based on the circumflex scapular artery flap was harvested, and the mean percentage of the surviving flap area and the necrotic area were calculated to be 71% ± 17...
November 2016: Journal of Surgical Research
https://www.readbyqxmd.com/read/27914266/skin-integrated-with-perfusable-vascular-channels-on-a-chip
#9
Nobuhito Mori, Yuya Morimoto, Shoji Takeuchi
This paper describes a method for fabricating perfusable vascular channels coated with endothelial cells within a cultured skin-equivalent by fixing it to a culture device connected to an external pump and tubes. A histological analysis showed that vascular channels were constructed in the skin-equivalent, which showed a conventional dermal/epidermal morphology, and the endothelial cells formed tight junctions on the vascular channel wall. The barrier function of the skin-equivalent was also confirmed. Cell distribution analysis indicated that the vascular channels supplied nutrition to the skin-equivalent...
November 27, 2016: Biomaterials
https://www.readbyqxmd.com/read/27914118/blue-lymphangitis-of-the-breast-after-breast-cancer-case-report
#10
Alexandra Arfi, Alice Clavier, Jean F Honart, Samy Ammari, Zahira Merabet, Christine Mateus, Julia Arfi-Rouche
Carcinomatous lymphangitis accounts for 5% of all skin metastases, but blue lymphangitis of the breast has never been described. We report a case of blue lymphangitis of the breast in a patient 11 years after treatment for ipsilateral breast cancer that was in full remission. Breast examination and imaging showed no other abnormalities. Skin biopsy revealed a carcinomatous-pigmented infiltration corresponding to melanoma metastasis, which helped highlight a primitive right flank injury. This case report emphasizes that a full body exam should always be performed with unusual presentation of breast cancer and reiterates the indispensable place of histology before any diagnosis...
December 3, 2016: Breast Journal
https://www.readbyqxmd.com/read/27911134/split-face-histological-and-biochemical-evaluation-of-tightening-efficacy-using-temperature-and-impedance-controlled-continuous-non-invasive-radiofrequency-energy
#11
Sylvie Boisnic, Marc Divaris, Marie-Christine Branchet, Andrew Anthony Nelson
BACKGROUND: Bi-polar radiofrequency (RF) is capable of heating dermal collagen fibers and inducing skin tightening by collagen remodelling. OBJECTIVE: To substantiate safety and improvement of skin laxity following skin heating with a novel temperature and impedance controlled non-invasive radiofrequency (RF) device by histological and biochemical evaluations. METHODS: A split-face study was performed on 4 subjects that underwent 8 weekly RF sessions on one side of their face, leaving the other side an untreated control and then underwent face-lift procedure...
December 2, 2016: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
https://www.readbyqxmd.com/read/27911032/a-dermal-equivalent-engineered-with-tgf-%C3%AE-3-expressing-bone-marrow-stromal-cells-and-amniotic-membrane-cosmetic-healing-of-full-thickness-skin-wounds-in-rats
#12
Ali Samadikuchaksaraei, Ahmad Mehdipour, Mehryar Habibi Roudkenar, Javad Verdi, Mohammad Taghi Joghataei, Kamran As'adi, Fatemeh Amiri, Mozhgan Dehghan Harati, Mazaher Gholipourmalekabadi, Nushin Karkuki Osguei
Transforming growth factor beta-3 (TGF-β3) has been shown to decrease scar formation after scheduled topical applications to the cutaneous wounds. This study aimed to continuously deliver TGF-β3, during the early phase of wound healing, by engineering a dermal equivalent (DE) using TGF-β3 expressing bone marrow stromal cells (BM-SCs) and human dehydrated amniotic membrane (hDAM). To engineer a DE, rat BM-SCs were seeded on the hDAM and TGF-β3 was transiently transfected into the BM-SCs using a plasmid vector...
December 2016: Artificial Organs
https://www.readbyqxmd.com/read/27910123/congenital-infantile-fibrosarcoma-mimicking-a-cutaneous-vascular-lesion-a-case-report-and-review-of-the-literature
#13
Tyler Enos, Gregory A Hosler, Naseem Uddin, Adnan Mir
Congenital infantile fibrosarcoma (CIFS) is a rare neoplasm of infancy that occurs most frequently in the extremities, and when presenting in the skin, may sometimes resemble infantile hemangiomas or other vascular lesions. Clinically, these tumors differ from hemangiomas in the time of onset, morphology, and growth pattern and must be evaluated histologically for definitive diagnosis. We describe an infant with a neoplasm involving the distal left forearm initially presumed to be a vascular lesion after evaluation by two separate ultrasound studies...
November 7, 2016: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/27909303/conditional-knockout-of-n-wasp-in-mouse-fibroblast-caused-keratinocyte-hyper-proliferation-and-enhanced-wound-closure
#14
Neeraj Jain, Pazhanichamy Kalailingam, Kai Wei Tan, Hui Bing Tan, Ming Keat Sng, Jeremy Soon Kiat Chan, Nguan Soon Tan, Thirumaran Thanabalu
Neural-Wiskott Aldrich Syndrome Protein (N-WASP) is expressed ubiquitously, regulates actin polymerization and is essential during mouse development. We have previously shown that N-WASP is critical for cell-ECM adhesion in fibroblasts. To characterize the role of N-WASP in fibroblast for skin development, we generated a conditional knockout mouse model in which fibroblast N-WASP was ablated using the Cre recombinase driven by Fibroblast Specific Protein promoter (Fsp-Cre). N-WASP(FKO) (N-WASP(fl/fl); Fsp-cre) were born following Mendelian genetics, survived without any visible abnormalities for more than 1 year and were sexually reproductive, suggesting that expression of N-WASP in fibroblast is not critical for survival under laboratory conditions...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27909082/proteomic-investigation-of-dermal-fibroblasts-isolated-from-affected-and-unaffected-skin-samples-from-patients-with-limited-cutaneous-systemic-sclerosis-2-distinct-entities
#15
Claudio Corallo, Annalisa Santucci, Giulia Bernardini, Natale Figura, Roberto Leoncini, Giulia Riolo, Antonio Montella, Chiara Chirico, Ranuccio Nuti, Nicola Giordano
OBJECTIVE: To identify using proteomic analysis the proteins of altered abundance in the affected and unaffected limited cutaneous systemic sclerosis (lcSSc) skin fibroblasts. METHODS: Excision biopsies (3 mm) were obtained from the affected and unaffected skin of 5 patients with lcSSc. Dermal fibroblasts were isolated enzymatically. Two-dimensional gel electrophoresis was used to separate and define proteins in affected and unaffected fibroblast lysates. Proteins of altered abundance were identified by mass spectrometry...
December 1, 2016: Journal of Rheumatology
https://www.readbyqxmd.com/read/27906694/follicular-malignant-melanoma-a-rare-morphologic-variant-of-melanoma-report-of-a-case-and-review-of-the-literature
#16
Iona Chapman, Sharon Horton, Wenhua Liu
Follicular malignant melanoma (FMM) is an exceedingly rare variant of melanoma. Only 8 cases have been reported in the literature thus far. Often bland on physical examination, FMM shows a striking histologic pattern, with atypical melanocytes sometimes consuming the entire follicle and extending into the dermis. Criteria have been suggested to help distinguish FMM from lentigo maligna melanoma; however, no clear criteria distinguish this cancer clinically. FMM cannot be distinguished from follicular metastases of melanoma based on histology, requiring close clinical correlation and detailed history taking on the part of the practitioner...
November 29, 2016: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/27906097/a-10-year-old-child-presenting-with-syndromic-paucity-of-bile-ducts-alagille-syndrome-a-case-report
#17
Girish Kumar Pati, Ayaskanta Singh, Preetam Nath, Jimmy Narayan, Pradeep Kumar Padhi, Prasanta Kumar Parida, Kaumudee Pattnaik, Chittaranjan Panda, Shivaram Prasad Singh
BACKGROUND: Alagille syndrome, a rare genetic disorder with autosomal dominant transmission, manifests with five major features: paucity of interlobular bile ducts, characteristic facies, posterior embryotoxon, vertebral defects, and peripheral pulmonary stenosis. Globally, only 500 cases have so far been reported, with only five cases reported in the Indian subcontinent. Rarely, Alagille syndrome also presents with skin manifestations and early-onset chronic liver disease, which was found in our case...
November 30, 2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27904271/histologic-evidence-of-new-collagen-formulation-using-platelet-rich-plasma-in-skin-rejuvenation-a-prospective-controlled-clinical-study
#18
Ozlem Karabudak Abuaf, Hamza Yildiz, Hüseyin Baloglu, Memet Ersan Bilgili, Hasan Aktug Simsek, Bilal Dogan
BACKGROUND: Platelet-rich plasma (PRP) is an autologous concentration of human platelets contained in a small volume of plasma and has recently been shown to accelerate rejuvenate aging skin by various growth factors and cell adhesion molecules. OBJECTIVE: This study was conducted to evaluate the efficacy and safety of intradermal injection of PRP in the human facial rejuvenation. METHODS: This study was a prospective, single-center, single-dose, open-label, non-randomized controlled clinical study...
December 2016: Annals of Dermatology
https://www.readbyqxmd.com/read/27904179/a-clinicopathological-and-dermoscopic-correlation-of-seborrheic-keratosis
#19
Geethu Francis Alapatt, D Sukumar, M Ramesh Bhat
BACKGROUND: Seborrheic keratosis (SK) is the most common benign epidermal tumor of the skin. Even though SK has been well characterized clinically, dermoscopically, and histopathologically, data regarding clinical dermoscopic and histopathological correlation of different types of SK are inadequate. AIM: We carried out this study to establish any correlation between the clinical, dermoscopic, and histopathological appearance of SK and its variants. METHODS: This was a descriptive study...
November 2016: Indian Journal of Dermatology
https://www.readbyqxmd.com/read/27903865/imaging-mitochondrial-dynamics-in-human-skin-reveals-depth-dependent-hypoxia-and-malignant-potential-for-diagnosis
#20
Dimitra Pouli, Mihaela Balu, Carlo A Alonzo, Zhiyi Liu, Kyle P Quinn, Francisca Rius-Diaz, Ronald M Harris, Kristen M Kelly, Bruce J Tromberg, Irene Georgakoudi
Active changes in mitochondrial structure and organization facilitate cellular homeostasis. Because aberrant mitochondrial dynamics are implicated in a variety of human diseases, their assessment is potentially useful for diagnosis, therapy, and disease monitoring. Because current techniques for evaluating mitochondrial morphology are invasive or necessitate mitochondria-specific dyes, their clinical translation is limited. We report that mitochondrial dynamics can be monitored in vivo, within intact human skin by relying entirely on endogenous two-photon-excited fluorescence from the reduced metabolic coenzyme nicotinamide adenine dinucleotide (NADH)...
November 30, 2016: Science Translational Medicine
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