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174 Cards in this Set
- Front
- Back
Ornithine Decarboxylase is a marker for what and can be found in which layer of the epidermis?
|
Found in basal cells
-Marker for proliferative activity |
|
Name 6 things that simulate the cells in the basal layer
|
1) Trauma 4) Estrogens
2) UV 5) B-agonists 3) EGF 6) Tumor promotors |
|
What 3 things inhibit cells in the basal layer
|
1) Protein deprivation in psoriatic skin
2) Retinoids 3) Steroids |
|
What 5 proteins are upregulated during hyper proliferative states?
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1) K6 4)a3b
2) K16 5) Integrin 3) Ki-67 |
|
What disease is due to decreased lamellar granules?
|
Flegel's Disease
|
|
This disease is characterized by uniformly abnormal or absent lamellar granules
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Harlequin Ichthyosis
|
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What is the gene defect seen with Harlequin Ichthyosis?
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ABCA12
|
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This type of Ichthyosis is caused by steroid sulfatase missing from lamellar granules
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X-linked Ichthyosis
|
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Prenatal diagnosis of this disease will show, decreased estrogen levels and non-hydrolyzed sulfated steroids in maternal urine.
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X-linked Ichthyosis
|
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Naxos syndrome is associated with what desmosomal protein?
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Plakoglobin
|
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Desmoplakin I/II is associated with this disease
|
Carvajal Syndrome
|
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Envoplakin is one of the antigens in this blistering disorder
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Paraneoplastic Pemphigus
|
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All forms of EB Simplex are due to which 3 antigens?
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1) K5
2) K14 3) Plectin |
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EB Simplex-muscular dystrophy is related to a defect in what protein?
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Plectin
|
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Junctional EB, Herlitz type (lethal) is cause by defects in what protein?
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Laminin 5
|
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Junctional EB, Herlitz type (lethal) is cause by defect in this gene.
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LAMB3 gene
|
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Junctional EB, Pyloric atresia is cause by defects in this protein.
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a6b4 integrin
|
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DEB, Bart's Syndrome and EB acquisita are all caused by defects in this type of collagen.
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Collagen 7
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Another name for BPAg1 is...
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Desmoplakin
|
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Another name for BPAg2 is...
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Type 17 Collagen
|
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Desmoplakin I/II is associated with this disease
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Carvajal Syndrome
|
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Envoplakin is one of the antigens in this blistering disorder
|
Paraneoplastic Pemphigus
|
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All forms of EB Simplex are due to which 3 antigens?
|
1) K5
2) K14 3) Plectin |
|
EB Simplex-muscular dystrophy is related to a defect in what protein?
|
Plectin
|
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Junctional EB, Herlitz type (lethal) is cause by defects in what protein?
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Laminin 5
|
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Junctional EB, Herlitz type (lethal) is cause by defect in this gene.
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LAMB3 gene
|
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Junctional EB, Pyloric atresia is cause by defects in this protein.
|
a6b4 integrin
|
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DEB, Bart's Syndrome and EB acquisita are all caused by defects in this type of collagen.
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Collagen 7
|
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Another name for BPAg1 is...
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Desmoplakin
|
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Another name for BPAg2 is...
|
Type 17 Collagen
|
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The NC16A domain of BPAg2 interacts with which 2 proteins extracellularly?
|
1) a6b4 integrin
2) Laminin 5 |
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The Lamina Densa is made of which type of collagen?
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Type 4 Collagen
|
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The Sublamina Densa is made up of which type of collagen?
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Type 7 Collagen
|
|
Keratinocytes produce what 2 growth factors for melanocytes?
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1) beta-FGF
2) TGF-alpha |
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Keratinocytes produce these 3 inhibitory factors for melanocytes?
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1) IL-1
2) IL-6 3) TGF-beta |
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Oculocutaneous Albinism (OCA) type 1 is caused by a defect in melanin synthesis due to a defect in what?
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Tyrosinase
|
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Oculocutaneous Albinism (OCA) type 2 is caused by a defect in melanin synthesis due to what gene?
|
P-gene
|
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Oculocutaneous Albinism (OCA) type 3 is caused by a defect in melanin synthesis due to what gene?
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TRP-1 gene
|
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Langerhans cells will stain positive to what 5 stains?
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1) CD45
2) S-100 3) CD1a 4) Actin 5) Vimentin |
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Langerhans cells are central to the pathogenic processes of what 4 diseases?
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1) Atopic Dermatitis
2) Psoriasis 3) Allergic Contact Dermatitis 4) Infections like Leishmaniasis |
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Langerhans cells adhere to keratinocytes cells by what?
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E-Cadherin
|
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Langerhans cells produce what cytokine?
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IL-1
|
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What 4 disease processes involve Langerhans cells?
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1) Letterer-Siwe Disease
2) Hand-Schuller-Christian dz 3) Eosinophilic Granuloma 4) Hashimoto-Pritzker Disease |
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True or False, Langerhans cell cannot be infected with HIV?
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False, Langerhans cell CAN be infected by HIV
|
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What 2 finding on EM characterize Langerhans cells?
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1) Kidney shaped nucleus
2) Birbeck granules |
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Name the 5 cell types commonly found in the Dermis
|
1) Fibroblasts
2) Mast Cells 3) Monocytes 4) Phagocytes 5) Glomus cells |
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Collagen constitutes what % of the dry weight of skin?
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75%
|
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What vitamin is a required cofactor for production of collagen?
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Vitamin C
(C= Collagen) |
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What group of syndromes is characterized by excessive stretchability and fragility of the skin with tendency toward easy scar formation with "fish-mouth" scars?
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Ehlers-Danlos Syndrome
|
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What disorder is caused by abnormal cross linking of collagen due to mutated beta-cystathione synthase?
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Homocystinuria
|
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This AR disorder is associated with collagen fibrillinogenesis
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Tenascin-X
|
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What 6 diseases are caused by defects in Elastin?
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1) Cutis Laxa
2) Marfan's Syndrome 3) Congenital Contractural Arachnodactyly 4) Pseudoxanthoma Elasticum 5) Buschke-Ollendorf Syndrome 6) Anetoderma |
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Cutis Laxa is associated with a defect in what gene?
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Fibulin 5 gene
|
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Marfan's syndrome is associated with what elastic fiber disorder?
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Decreased Fibrillin 1
|
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Congenital Contractural Arachnodactyly is associated with a mutation in what?
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Fibrillin 2
|
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Pseudoxanthoma Elasticum is associated with calcium deposition caused by what gene defect?
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ABCC6 Gene defect
|
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Buschke-Ollendorf Syndrome is caused by what gene defect?
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LEMD3 gene defect
|
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Decreased desmosine is seen with which Elastin Disease?
|
Anetoderma
|
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Name the 2 "CD"s that all phagocytic skin macrophages express in the dermis
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1) CD11c
2) CD6 |
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B2 integrin binds to what to stimulate phagocytosis in dermal macrophages?
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C3b+
|
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What on the surface of macrophages binds to CAM-2?
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CD11a which = LFA
|
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What on the surface of macrophages binds to LCAM?
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CD11b which = Mac-1
|
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Macrophages kill bad guys as part of the immune system by what 5 processes?
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1) Phagocytic
2) Antigen processing & presenting to naive T-cells 3) Microbiocidal 4) Tumoricidal 5) Secretory (cytokines) |
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Macrophages are microbiocidal through the production and release of what 3 things?
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1) Lysozyme
2) Peroxide 3) Superoxide |
|
What are the 3 types of mast cells in the body?
|
1) T Type (GI and resp. mucosa)
2) TC Type (skin, GI, submucosa 3) C type (skin, lymph nodes) |
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Where is the greatest density of Mast cells found in the skin?
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Papillary Dermis
|
|
What 5 diseases are associated with Mast Cells?
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1) Mastocytosis
2) Solitary Mastocytoma 3) Diffuse Erythrodermic Mastocytosis 4) TMEP 5) UP |
|
What type of stem cells are Mast cells derived from?
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Bone marrow-residing CD34+ stem cells
|
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Proliferation of Mast cells depends on what receptor?
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C-kit receptor and its ligand stem-cell factor (SCF)
|
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Mutations in c-kit may result in what 2 diseases?
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1) Mastocytosis
2) Piebaldism |
|
What 4 stains are positive for Mast Cells?
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1) C-Kit
2) CD34 3) Giemsa 4) Leder |
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What cells produce and store inflammatory mediators in preformed secretory granules?
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Mast Cells
|
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Mast cells produce what IL?
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IL-8
|
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IL-8 is a strong chemotactic factor for what cell?
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Neutrophils
|
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What are the 3 preformed mediators stored in mast cells?
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1) Tryptase
2) Heparin 3) Histamine |
|
Degranulation of Mast cells produces what 4 results?
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1) Vascular smooth muscle contraction
2) Increased vascular permeability 3) Tissue Edema 4) Recruitment of inflammatory cells |
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What type of reaction do mast cells participate in?
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1) Immediate-Type Hypersensitivity Reactions
|
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What are the 15 Mast cell mediators?
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Tryptase, Chymase, Cathepsin G, Histamin, Heparin, IL-4, IL-V, IL-3, IL-5, GM-CSF, TNF-alpha, CCL3, Leukotrienes C4D4EF, Platelet activating factor
|
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What 2 disease groups are associated with Glomus cells?
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1) Glomus Tumor
2) Glomangioma |
|
Name the 5 proteins in the Plakin family.
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1) Envoplakin
2) Periplakin 3) Desmoplakin 4) BPAg1 5) Plectin |
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EB Simplex-Dowling Meara is associated with which 2 keratins?
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1) K5
2) K14 |
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Plectin is associated with what inherited disease and what autoimmune disease?
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Inherited: EB Simplex- Muscular Dystrophy type
Autoimmune: Paraneoplastic Pemphigus |
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BPAg2 is associated what inherited dz and what 2 autoimmune dz.'s?
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Inherited: GABEB
Autoimmune: EB, CP |
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a6b4 integrin is associated with what inherited dz and what autoimmune dz?
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Inherited: JEB w/ pyloric atreasia
Autoimmune: b4 integrin ocular CP |
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Laminin 5 is associated with what inherited dz and what autoimmune dz?
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Inherited: Junctional EB
Autoimmune: CP |
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Collagen 7 is associated with what inherited dz and what 2 autoimmune dz?
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Inherited: Dystrophic EB- collagenous domain
Autoimmune: 1) EBA -non collagenous domain 2) Bullous LE |
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Granulation tissue primarily contains what type of collagen?
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Type 3 collagen
|
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What do the remaining hair follicles develop during gestations?
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4-5 months gestation, they develop in a cephalic to caudal direction
|
|
ORS makes what type of keratin?
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Trichilemmal keratin
|
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Which of the 3 parts of the IRS keratinizes first?
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Henle's Layer
|
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What are the 3 parts of the IRS? Outside --> Inside?
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Henle-->Huxley-->Cuticle
|
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What are the 3 parts of the hair shaft Outside --> Inside?
|
Cuticle-->Cortex-->Medulla
|
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What type of hair disorder is seen with chemo?
|
Anagen Effluvium
|
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What hair disorder is characterized by abrupt cessation of mitotic activity in rapidly dividing hair matrix cells?
|
Anagen Effluvium
|
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Mutation in this gene causes hair to be 30-50% longer than usual.
|
FGF5 gene
|
|
Mutations in the Hairless gene and Vitamin D receptor causes what?
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Atrichia
|
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These 3 molecules are important for transition from Telogen --> Anagen
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1) Sonic Hedgehog gene (SHH)
2) Patched gene (receptor for SHH) 3) Beta-Catenin |
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Name 7 things that can cause Telogen Effluvium.
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1) Stress
2) Endocrine problems 3) Nutritional deficiency 4) Hypervitaminosis A 5) Delivery of baby 6) Fever 7) Drugs |
|
Name 7 diseases that are associated with defects of the hair shaft.
|
1) Monilethrix
2) Netherton's Syndrome 3) Pili annulati 4) Menkes Disease 5) Uncombable Hair Syndrome 6) Hereditary Mucoepithelial Dysplasia 7) Nanos Syndrome |
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What disorder is causes the "Beaded Hair" with alternating thick and thin areas?
|
Monilethrix
|
|
Monilethrix is caused by a defect in this hair keratin.
|
Keratin hHb6
|
|
This syndrome is presents with trichorhexis invaginatum or "Bamboo Hair"
|
Netherton's Syndrome
|
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Defect in what gene causes "Bamboo Hair"?
|
Serine-Protease Inhibitor Gene or SPINK5 gene
|
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What disorder causes "Banded Hair"?
|
Pili Annulati
|
|
This disease causes twisted hair or "Pili Torti".
|
Menkes Disease
(Menkes "Kinky" Hair syndrome) |
|
Menkes Disease is caused by a defect in what?
|
Defect in Copper Transporter
|
|
What do kind of hair do you see with Uncombable hair syndrome?
|
Triangle-shaped hair
|
|
What 3 symptoms characterize Hereditary Mucoepithelial Dysplasia?
|
1) Red Gums
2) KP 3) Episodic hair loss |
|
What disorder causes red gums?
|
Hereditary Mucoepithelial Dysplasia
|
|
Nanos Syndrome is caused by a mutation in what protein?
|
Plakoglobin
|
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What disease is characterized by Wooly hair, hyperkeratosis of the palms & soles, and cardiac arrhythmias?
|
Nanos Syndrome
|
|
What adnexal gland is under androgenic hormonal control?
|
Sebaceous Glands
|
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Name the 5, free sebaceous glands (not associated with hair) found on the body.
|
1) Montgomery's areolar tubercles
2) Fordyce's spots 3) Meibomian Glands 4) Glands of Zeis 5) Tyson's glands |
|
What and where are the Glands of Moll?
|
Free standing Apocrine glands on the eyelid margin
|
|
What is the name for free standing sebaceous glands on the nipple and areola?
|
Montgomery's areolar tubercles
|
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Where do you find Fordyce's spots? What are they?
|
Free standing sebaceous glands on the vermillion border of the lips and on the buccal mucosa
|
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Where are Meibomian glands located?
|
Deep on the eyelids, embedded in the tarsal plate
|
|
What are Meibomian glands?
|
Free-standing modified sebaceous glands that from the most exterior (lipid) layer of the tear film, preventing evaporation
|
|
What is a Chalazion?
|
Inflammation of the Meibomian gland.
|
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Where are the Glands of Zeis located?
|
Superficial eyelid margin
|
|
What are the Glands of Zeis and what function do they serve?
|
Free-standing sebaceous glands, that also contribute to the exterior lipid layer of the tear film
|
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What is a Hordeolum?
|
Inflammation of the Glands of Zeis.
|
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What do we call the Apocrine glands on the eyelid margin?
|
Glands of Moll
|
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What type of secretion do the Glands of Moll exhibit?
|
Decapitation secretion. (apocrine)
|
|
What is the name for free-standing sebaceous glands on the genitalia?
|
Tyson's Glands
|
|
Where are Tyson's Glands located?
|
Free-standing sebaceous glands on the genitalia
|
|
Apocrine glands are innervated by what?
|
Sympathetic fibers
|
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Eccrine glands are found everywhere except what 6 areas?
|
1) Vermillion border of the lips
2) Nail beds 3) Labia Minora 4) Glans Penis 5) Clitoris 6) External auditory canal |
|
What type of gland is on the vermillion border of the lips?
|
Sebaceous glands, Fordyce spots
|
|
What 2 types of glands are on the genitalia?
|
Apocrine glands AND
Modified Sebaceous glands (Tyson's Glands) |
|
What type of gland is found ON the breast (nipple & areola)?
|
Sebaceous glands, (Montgomery's)
|
|
What type of gland are the mammary glands, found IN the breast?
|
Apocrine glands (Mammary Glands)
|
|
What 2 types of glands are around the eyelids?
|
1) Apocrine glands (Moll's)
2) Sebaceous glands -Meibomian (deep-chalazion) -Zeis (SF-Hordeolum) |
|
What disease is caused by occlusion of apocrine ducts?
|
Fox-Fordyce Disease
|
|
What disease is characterized by Chromhidrosis (pigmented sweat)?
|
Fox-Fordyce Disease
|
|
What chemical causes chromhidrosis seen in Fox-Fordyce disease?
|
Lipofuscin
|
|
What are the 2 types of free nerve endings found in the skin?
|
1) Penicillate Fibers
2) Papillary Nerve endings |
|
Which type of free nerve endings are found sub-epidermally in hair-bearing skin?
|
Penicillate Fibers
|
|
Penicillate fibers detect what 3 things?
|
1) Pain
2) Touch 3) Temperature |
|
Where can you find papillary free nerve endings in the skin?
|
At the orifice of the hair follicle
|
|
What type of free nerve ending is particularly sensitive to cold?
|
Papillary nerve endings
|
|
Name the 3 corpuscular receptors in the skin.
|
1) Meissner's Corpuscle
2) Pacinian (Vater-Pacini) Corpuscle 3) Krause End bulbs |
|
Which corpuscular receptor detects touch and light pressure?
|
Meissner's Corpuscle
|
|
Which corpuscular receptor is in weight-bearing sites of the body?
|
Pacinian (Vater-Pacini) Corpuscle
|
|
Meissner's corpuscles are found where?
|
Dermal papilla of digital skin
|
|
Where can you find Pacinian corpuscles in the skin?
|
In the deep dermis and SQ of weight-bearing sites
|
|
Which corpuscular receptor detects vibrational stimuli?
|
Pacinian Corpuscles
|
|
What corpuscular receptor is found in the genitals and lips?
|
Krause End bulbs
|
|
What group of blistering disorders have a positive DIF in the intercellular space (fish-net pattern)?
|
All types of Pemphigus
|
|
What immunoglobulin is deposited in the intercellular space in Pemphigus?
|
IgG
|
|
All types of pemphigus deposit IgG in the intercellular space except 1.
|
Except IgA Pemphigus
|
|
What 2 types of pemphigus have a positive DIF in the intercellular space AND BMZ?
|
1) Paraneoplastic pemphigus
2) Drug-induced pemphigus |
|
What group of blistering disorders have a positive DIF to just the BMZ?
|
Pemphigoid
|
|
What immunoglobulin is deposited in the BMZ with the pemphigoid group?
|
C3 & IgG
C3 is more intense |
|
What 5 disorders will have DIF positive with IgG and C3 in the BMZ?
|
1) BP
2) HG 3) CP 4) EBA 5) Bullous LE |
|
DIF in the BMZ with IgG > C3 favors what group of diseases?
|
Pemphigoid
|
|
DIF in the BMZ with IgG>C3 favors what 2 diseases?
|
1) EBA
2) Bullous LE |
|
What disorder will have linear deposition of IgA at BMZ?
|
Linear IgA bullous dermatosis
|
|
On salt-split skin BP will show deposits on what side of the split?
|
Epidermal side (roof)
|
|
On salt-split skin EBA will show deposits on what side of the split?
|
Dermal side (floor)
|
|
What 3 diseases will have deposits on the DERMAL side or Floor on a salt-split skin test?
|
1) EBA
2) Bullous LE 3) CP |
|
What disease will show IgG and IgA within dermal blood vessels and the BMZ?
|
Porphyrias
PCT and pseudoporphyria |
|
What disease will have positive DIF in the BMZ and in the Papillary Dermis?
|
Dermatitis Herpetiformis
|
|
What disease has a DIF showing IgA and C3 in the papillary dermis and along the BMZ?
|
Dermatitis Herpetiformis
|
|
In DH, 100% of biopsies taken from normal appearing skin will show what?
|
IgA deposition
|
|
Circulating IgG anti-intercellular antibodies in the serum are associated with what 4 diseases?
|
1) PV
2) PF 3) PNP 4) Drug-induced Pemphigus |
|
What disease will show circulating IgA Anti-intercellular antibodies?
|
IgA Pemphigus
|
|
What 2 diseases will show circulating IgG Anti-BMZ antibodies?
|
BP and EBA
|
|
What disease will show circulating IgA Anti-BMZ antibodies?
|
Adult and childhood forms of Linear IgA disease
|
|
DH patients can have circulating antibodies to what 3 proteins?
|
1) Anti-gliadin
2) Anti-reticular 3) Anti-endomysial |
|
In Discoid LE, where is the best place to biopsy?
|
Oldest, untreated lesion on non-sun-exposed skin
|
|
DIF showing IgG and IgM along the DE junction leads what diagnosis?
|
Discoid Lupus
|
|
DIF showing IgG and IgM along the DE junction and basal keratinocytes leads to what diagnosis?
|
SCLE
|
|
Cytoid bodies on DIF should make you think of what CT disease?
|
Lupus
|