• In addition, almost all lichenicolous fungi (species occurring on lichens) are included. (nv.gov)
  • Chrysothrix candelaris (Dust Lichen) is a species of Fungi in the family Chrysothricaceae . (eol.org)
  • Graphis intricata (Script Lichen) is a species of Fungi in the family Graphidaceae . (eol.org)
  • Lichen is an unlikely combination of fungi and algae living in a symbiotic relationship on the plant's bark. (msucares.com)
  • In nature , lichen are composite organisms consisting of fungi and photosynthetic bacteria or algae (a type of symbiont called a photobiont) living in a symbiotic relationship. (clearlyexplained.com)
  • The largest collections are vascular plants, but extensive collections also include algae, lichens, bryophytes and fungi. (lu.se)
  • The underlying cause of lichen sclerosus is not fully understood but it is thought to relate to an autoimmune process. (illness.com)
  • The exact cause of lichen planopilaris is unknown. (dermnetnz.org)
  • The cause of lichen planus is not known, but it may be a reaction by the immune system to a variety of medications (especially beta-blockers, nonsteroidal anti-inflammatory drugs [NSAIDs], angiotensin-converting enzyme [ACE] inhibitors, sulfonylureas, antimalarials, penicillamine , and thiazides). (msdmanuals.com)
  • No HPV-positive samples were observed in oral lichen planus samples based on the recent findings in the current study of the Iranian population. (magiran.com)
  • In Graz (Austria) and Podgorica (Montenegro), epiphytic lichens and bryophytes were studied in 2017 based on a standardized approach. (bioone.org)
  • Mean species numbers of lichens and bryophytes differed significantly between phorophyte species. (bioone.org)
  • All of these terms have been abandoned and replaced by 'lichen sclerosus,' which is now used for genital and extragenital lesions. (illness.com)
  • Therefore, early in the formation of oral lichen planus lesions, CD8 + T cells may recognize an antigen associated with the major histocompatibility complex (MHC) class I on keratinocytes. (medscape.com)
  • Oral lichen planus lesions contain increased levels of the cytokine tumor necrosis factor (TNF)-alpha. (medscape.com)
  • The role of autoimmunity in the pathogenesis is supported by many autoimmune features of oral lichen planus, including its chronicity, onset in adults, predilection for females, association with other autoimmune diseases, occasional tissue-type associations, depressed immune-suppressor activity in patients with oral lichen planus, and the presence of autocytotoxic T-cell clones in lichen planus lesions. (medscape.com)
  • A total of 1227 patients' records were analyzed and the lesions were classified into 9 categories: neoplasm, non neoplastic proliferative processes, cysts, glandular lesions, pigmented, precancerous, dermatological, bone and other types. (bvsalud.org)
  • Lesions most frequently diagnosed were inflammatory papillary hyperplasia, mucoceles, periapical cyst and lichen planus. (bvsalud.org)
  • Guttate Scleroderma, Lichen Sclerosus Type is synonymous with the term Lichen Sclerosus. (illness.com)
  • Lichen Sclerosus (LS) was described for the first time in 1887. (illness.com)
  • Since then, many synonyms have been in use, notably 'Kraurosis vulvae,' 'vulvar dystrophy,' 'white spot disease,' and 'lichen sclerosus et atrophicus' or 'guttate scleroderma. (illness.com)
  • Lichen sclerosus is a chronic skin disorder that is more common in women, most often affecting the external part of the vagina (vulva) or the area around the anus. (illness.com)
  • You can't give lichen sclerosus to someone else. (illness.com)
  • You may have no symptoms if you have a mild form of guttate scleroderma, lichen sclerosus type. (illness.com)
  • Is there a test for lichen sclerosus? (illness.com)
  • Usually, a doctor will take a small piece of skin and look at it under a microscope to diagnose lichen sclerosus. (illness.com)
  • Lichen sclerosus is a rare skin condition that often affects the genital and anal regions of the body. (healthline.com)
  • Doctors don't know what causes lichen sclerosus. (healthline.com)
  • A number of associated cutaneous findings have been reported in up to 15% of these patients including lichen planus-like eruptions (LP). (thedoctorsdoctor.com)
  • Cutaneous lichen planus (CLP) most commonly involves the flexor surfaces of the extremities and presents as small itchy violaceous Papules in middle-aged adults. (hindawi.com)
  • and tumors that may be mistaken for other types of cutaneous malignancies. (medscape.com)
  • You will also want to learn about the different lichen forms ( foliose , fructiose , crustose , and squamulose ) and determine which are suitable for lichenometry. (sciencebuddies.org)
  • Lichen planopilaris (LPP) affects the scalp and hair. (rarediseases.org)
  • What is lichen planopilaris? (dermnetnz.org)
  • Lichen planopilaris is an uncommon inflammatory condition that can lead to permanent hair loss. (dermnetnz.org)
  • Who gets lichen planopilaris? (dermnetnz.org)
  • Lichen planopilaris usually affects young adult women, although the age range is wide and it can also affect men. (dermnetnz.org)
  • Although lichen planopilaris is rare, it is one of the common causes of scarring hair loss of the scalp. (dermnetnz.org)
  • What are the clinical features of lichen planopilaris? (dermnetnz.org)
  • Lichen planopilaris typically presents as smooth white patches of scalp hair loss. (dermnetnz.org)
  • Lichen planopilaris is usually slowly progressive. (dermnetnz.org)
  • How is lichen planopilaris diagnosed? (dermnetnz.org)
  • Lichen planopilaris is suspected on the clinical presentation and careful examination of the mouth, nails, and skin for evidence of lichen planus elsewhere. (dermnetnz.org)
  • Lichen planopilaris is an example of a primary lymphocytic folliculitis. (dermnetnz.org)
  • What is the differential diagnosis for lichen planopilaris? (dermnetnz.org)
  • Making a diagnosis of lichen planopilaris clinically, trichoscopically , and with a scalp biopsy. (dermnetnz.org)
  • This glossary provides an overview of terms used in the description of lichens, composite organisms arising from algae or cyanobacteria living symbiotically among filaments of multiple fungus species. (wikipedia.org)
  • How to Treat Lichen Amyloidosis in Ayurveda? (planetayurveda.com)
  • Lichen amyloidosis is believed to be more prevalent among Southern Chinese and South American populations. (medscape.com)
  • Lichen amyloidosis accounts for approximately 10% of cases of PLCA. (medscape.com)
  • The lichen amyloidosis in this syndrome is usually localized to the interscapular region consisting of lichenoid papules, with hyperpigmentation and fine scaling. (medscape.com)
  • The histopathologic and immunohistochemistry findings are similar to those in isolated lichen amyloidosis, pointing to keratin-derived amyloidosis. (medscape.com)
  • Maddison et al suggest a possible cause of the severe pruritus associated with lichen amyloidosis in relation to nerve fiber density. (medscape.com)
  • Lichen amyloidosis is a chronic condition without potential for malignant transformation or increase in mortality. (medscape.com)
  • [ 9 ] Amyloid deposits in macular amyloidosis and lichen amyloidosis bind to antikeratin antibodies. (medscape.com)
  • Apaydin et al found no differences in staining characteristics of cytokeratins between macular amyloidosis and lichen amyloidosis. (medscape.com)
  • The appearance of these patches defines three forms of the condition: lichen amyloidosis, macular amyloidosis, and nodular amyloidosis. (medlineplus.gov)
  • Lichen amyloidosis is characterized by severely itchy patches of thickened skin with multiple small bumps. (medlineplus.gov)
  • In some affected individuals, the patches have characteristics of both lichen and macular amyloidosis. (medlineplus.gov)
  • Mutations in either gene are likely involved in lichen and macular amyloidosis, which are thought to be related conditions that arise through similar disease mechanisms. (medlineplus.gov)
  • In lichen and macular amyloidosis, it is thought that scratching the itchy skin causes skin cells to undergo apoptosis, releasing proteins that abnormally clump together and form amyloids. (medlineplus.gov)
  • The expression or unmasking of the lichen planus antigen may be induced by drugs (lichenoid drug reaction), contact allergens in dental restorative materials or toothpastes (contact hypersensitivity reaction), mechanical trauma (Koebner phenomenon), viral infection, or other unidentified agents. (medscape.com)
  • It's important to treat lichen planus on the scalp to prevent further hair loss, and help ensure that any lost hair grows back. (cleure.com)
  • It completes coverage of the macrolichens and includes most genera of microlichens (e.g., the crustose lichens). (nv.gov)
  • The epiphytic lichen Lobaria pindarensis is a Himalayan endemic species with little information on distribution, genetic diversity and structural complexity. (uni-muenchen.de)
  • Aspen succession and nitrogen loading: a case for epiphytic lichens as" by Paul C. Rogers, Kori D. Moore et al. (usu.edu)
  • Lichen planus (LP) is a chronic inflammatory disorder that most often affects middle-aged adults. (hindawi.com)
  • Lichen planus (LP) is a chronic inflammatory and immune mediated disease that affects the skin, nails, hair, and mucous membranes. (hindawi.com)
  • In women, lichen planus often affects the vulva and vagina. (msdmanuals.com)
  • In men, lichen planus commonly affects the genitals, especially the head of the penis. (msdmanuals.com)
  • Lichen planus affects the nails in up to 10% of cases. (msdmanuals.com)
  • Oral lichen planus affects approximately 1-2% of the general adult population, although the prevalence of the disease is unknown in many areas. (medscape.com)
  • Oral lichen planus affects all racial groups. (medscape.com)
  • Lichens are very interesting organisms that are found throughout the world. (msucares.com)
  • Lichens are naturally occurring organisms that opportunistically increase their growth as a tree canopy starts to decline. (msucares.com)
  • A typical leafy lichen is the tree lungwort ( Lobaria pulmonaria ), one of 70 species which are mostly subtropical. (daviddarling.info)
  • The herbarium is also an invaluable source as a reference for species determinations in all types of inventories and flora projects. (lu.se)
  • adventive branching Referring to fruticose lichens, a branching pattern that is unusual or abnormal, like that which sometimes occurs after the original branches are damaged in Cladonia. (wikipedia.org)
  • An example of a fruticose lichen from the Swiss Alps. (clearlyexplained.com)
  • actinolichen A lichen-like association between an actinobacterium (Streptomyces) and a green alga (Chlorella xantha). (wikipedia.org)
  • The most common alga (found in more than 50 percent of lichens) is the single-celled green alga Trebouxia . (daviddarling.info)
  • Therefore, the present study aimed to investigate the frequency of human papillomavirus (HPV) DNA in oral lichen planus (OLP) tissue samples by the polymerase chain reaction (PCR) method. (magiran.com)
  • What are the odds of getting mouth cancer due to oral lichen planus? (healthtap.com)
  • The incidence of lichen planus turning into some type of oral skin cancer is very low according to my opinion. (healthtap.com)
  • http://www.Everydayhealth.Com/oral-head-and-neck-cancer/lichen-planus-and-oral-cancer.Aspx. (healthtap.com)
  • This oral antibiotic can be helpful in treating certain types of milia, such as milia en plaque. (medicalnewstoday.com)
  • Oral lichen planus (OLP) is a chronic mucocutaneous disorder that presents in a wide range of clinical forms, such as unilateral or bilateral white striations, papules, or plaques on the buccal mucosa, labial mucosa, tongue, and gingiva. (medscape.com)
  • Plaquelike oral lichen planus on the buccal mucosa on the left side. (medscape.com)
  • The dense subepithelial mononuclear infiltrate in oral lichen planus is composed of T cells and macrophages, and there are increased numbers of intraepithelial T cells. (medscape.com)
  • [ 8 ] T cells in oral lichen planus contain mRNA for TNF and secrete TNF in vitro. (medscape.com)
  • [ 9 ] Serum and salivary TNF levels are elevated in oral lichen planus patients. (medscape.com)
  • Of possible significance, elevated concentrations of interleukin-6 (IL-6) and neopterin in saliva and serum of patients with the erosive-atrophic form of oral lichen planus suggest they may be involved in the etiology of this disease variation. (medscape.com)
  • [ 20 ] Additionally, microRNA 4484 (miR-4484) has been found to be significantly up-regulated in the salivary exosomes of patients with oral lichen planus. (medscape.com)
  • Current data suggest that oral lichen planus (OLP) is a T-cell-mediated autoimmune disease in which autocytotoxic CD8 + T cells trigger the apoptosis of oral epithelial cells. (medscape.com)
  • However, the precise cause of oral lichen planus is unknown. (medscape.com)
  • Reported associations between oral lichen planus and systemic diseases may be coincidental, because (1) oral lichen planus is relatively common, (2) oral lichen planus occurs predominantly in older adults, and (3) many drugs used in the treatment of systemic diseases trigger the development of oral lichenoid lesions as an adverse effect. (medscape.com)
  • Oral lichen planus (OLP) is a chronic inflammatory disease that causes bilateral white striations, papules, or plaques on the buccal mucosa, tongue, and gingivae. (medscape.com)
  • [ 22 ] Oral lichen planus is a common noninfectious oral mucosal disorder among adult patients who attend oral pathology and oral medicine clinics. (medscape.com)
  • The female-to-male ratio for oral lichen planus is 1.4:1. (medscape.com)
  • Oral lichen planus predominantly occurs in adults older than 40 years, although younger adults and children can be affected. (medscape.com)
  • Shan J, Ma JM, Wang R, Liu QL, Fan Y. Proliferation and Apoptosis of Peripheral Blood Mononuclear Cells in Patients with Oral Lichen Planus. (medscape.com)
  • Younes F, Quartey EL, Kiguwa S, Partridge M. Expression of TNF and the 55-kDa TNF receptor in epidermis, oral mucosa, lichen planus and squamous cell carcinoma. (medscape.com)
  • A diet based exclusively on lichens produces symptoms of protein deficiency. (daviddarling.info)
  • Lichen planus usually resolves without treatment, but symptoms may be treated with corticosteroids, exposure to ultraviolet light, or lidocaine -containing mouthwashes. (msdmanuals.com)
  • Seborrheic Dermatitis is a type of eczema that is the result of excess Malassezia yeast, a bacteria commonly found on the skin. (cleure.com)
  • Lichens are often studied as bioindicators because they absorb a wide range of chemicals that may be present in the atmosphere. (clearlyexplained.com)
  • And remember that lichens grow on hard surfaces outdoors. (msucares.com)
  • The method is used with lichen species that exhibit predictable growth behavior, and is based on measuring the size of lichen colonies on exposed rock surfaces. (sciencebuddies.org)
  • This Photo: Tree Fungus, Moss and Lichen 01 LowRes clipart is great to illustrate your teaching materials. (abcteach.com)
  • This Photo: Tree Fungus, Moss and Lichen 01 LowRes clipart is provided in jpeg format. (abcteach.com)
  • Lichens arise from the mutually beneficial partnership that can develop between and fungus and an alga and/or cyanobacterium. (daviddarling.info)
  • A lichen is a symbiotic relationship between a fungus and an alga and/or a cyanobacterium . (daviddarling.info)
  • Every lichen (pronounced 'like-en', not 'litch-en') consists of a fungus, which usually makes up the main body or thallus , and an alga and/or a cyanobacterium, whose cells grow in among the threads or hyphae of the fungus (Fig 1). (daviddarling.info)
  • Lichen is actually two types of organism, rolled into one - the alga/cyanobacterium provides the fungus with food while the fungus offers the alga a living environment. (daviddarling.info)
  • With few exceptions, a lichen is the product of a single species of fungus and a single species of alga or cyanobacterium. (daviddarling.info)
  • However, lichens are low in other nutrients. (daviddarling.info)
  • The fungal cells absorb nutrients from water, give the lichen a definite structure, and protect the algal or bacterial cells from environmental extremes. (daviddarling.info)
  • Lichen take on a variety of biochemistries and form quite differently due to their individual fungal or bacterial components. (clearlyexplained.com)
  • Another lichen spreads across branches and develops wavy folds that resemble a crumpled sheet. (msucares.com)
  • Some of the branches have green lichen. (thesquirrelboard.com)
  • Lichen planus in the mouth usually results in lacy, bluish white lines and branches (called Wickham striae). (msdmanuals.com)
  • There are a few common types of lichens. (msucares.com)
  • Having spent decades getting to know lichens, Plantlife specialists Dave and Oliver are going to speak for them, sharing the fascinating and surprising stories some common, and more rare species tell us about the places they are growing. (plantlife.org.uk)
  • Whether rare or common, Dave Lamacraft loves all lichens. (plantlife.org.uk)
  • this type of selection is very common. (britannica.com)
  • Lichen planus is not common among children. (msdmanuals.com)
  • Signaling triggered by OSM appears to play a role in many body processes, including the development of blood cells, the maturation of cells to become certain cell types, an immune system response called inflammation, and the self-destruction (apoptosis) of cells. (medlineplus.gov)
  • The subunit produced from OSMR can also pair with a different protein to form the OSM receptor type II. (medlineplus.gov)
  • OSM receptor type II interacts with a protein called oncostatin M (OSM). (medlineplus.gov)
  • We discover that Mtb promotes lipid droplets by inhibiting DNA repair responses, resulting in the activation of the type-I IFN pathway and scavenger receptor-A1 (SR-A1)-mediated lipid droplet formation. (bvsalud.org)
  • It was originally named "lichen ruber planus" and "lichen psoriasis" [ 5 ]. (hindawi.com)
  • Lichen planus (LP) has been reported as a complication of hepatitis B vaccination in both adults and children. (thedoctorsdoctor.com)
  • Milia en plaque can affect children and adults, particularly middle-aged women. (medicalnewstoday.com)
  • Treatment with antibiotics can effectively eliminate this type of infection. (healthline.com)
  • Lichen planus, a recurring itchy disease, starts as a rash of small, separate, red or purple bumps that then combine and become rough, scaly patches. (msdmanuals.com)
  • A section through a lichen (B) shows a thin upper layer of tightly packed fungal strands. (daviddarling.info)
  • The main body of the lichen is made up of enmeshed fungal strands, below which is another thin layer similar to the upper one. (daviddarling.info)
  • Such lichens are often brightly colored - the pigment being derived from the fungal partner. (daviddarling.info)
  • Lichens are named based on the type of fungal component they contain. (clearlyexplained.com)
  • Because of this, those with oily skin are more likely to experience this type of dermatitis. (cleure.com)
  • Known occurrences, collected specimens and observations of cup lichen. (eol.org)
  • In this work, of course, all the 11,000 type specimens we have are particularly valuable. (lu.se)
  • The lichen extracts were also found to possess good amount of total proanthocyanidin, flavonoid and polyphenol. (unboundmedicine.com)
  • The worksheet will help your students learn how to find lichens , how to observe and record what they have found, how to identify the lichen by comparing it to published information, and how to figure out what questions they have about this lichen. (si.edu)
  • Lichen are generally low-growing, vary in color from bright orange or yellow to gray or black, and are often found growing on rocks and tree bark. (daviddarling.info)
  • In Podgorica, on 161 trees, 29 bryophyte and 52 lichen species were found. (bioone.org)