Search results for "ichen"

Role of serum interleukin-6 in deciding therapy for multidrug resistant oral lichen planus

2015

Background: Oral lichen planus (OLP) is a T cell mediated immune response. T cells locally present in the involved tissues release cytokines like interleukin-6 (IL-6), which contributes to pathogenesis of OLP. Also IL-6 has been associated with multidrug resistance protein (MRP) expression by keratinocytes. Correspondingly, upregulation of MRP was found in OLP. We conducted this study to evaluate the effects of various drugs on serum IL-6 in OLP; and correlation of these effects with the nature of clinical response and resistance pattern seen in OLP lesions with various therapeutic modalities. Thus we evaluated the role of serum IL-6 in deciding therapy for multidrug resistant OLP. Material…

Lichen communities on Populus   tremula are affected by the density of Picea   abies

2021

Questions Aspen (Populus tremula) is declining in the old‐growth forests of boreal Fennoscandia. This threatens the numerous taxa that are dependent on old aspens, including many epiphytic lichens. Potential methods to aid epiphytic lichens on aspen are centered around treatments which affect the density of Norway spruce (Picea abies). In this study, we investigated how epiphytic lichen communities on aspen are affected by the variation of spruce density in the immediate vicinity of the focal aspen. Location Southern boreal forests in Finland. Methods We recorded the occurrence of lichens from 120 aspens in 12 semi‐natural forest sites. We used spruce basal area as the measure for spruce de…

Gaisa kvalitātes novērtējums Balvos ar lihenoindikācijas metodi

2015

Bakalaura darbā „Gaisa kvalitātes novērtējums Balvos ar lihenoindikācijas metodi” tiek apkopots materiāls par gaisa piesārņojuma pakāpi, to veidiem un ietekmējošiem faktoriem Balvu pilsētā, kā arī ķērpju vispārīgu raksturojumu un metodēm, kas tiek pielietotas bioindikācijā. Darbā tika novērtēta Balvu pilsētas gaisa kvalitāte ar 5 ķērpju indikatorsugām, kas tika izmantotās kā bioindikatori. Pilsētas teritorija tika iedalīta 26 kvadrātos. Lielākajā pilsētas teritorijā ir zems gaisa piesārņojums- 45%, tīrs gaiss ir 40% un vidējs gaisa piesārņojums - 15%.

Correlation of " in vivo" microcirculation and degeneration of the basal cells of the epithelium in lingual lichen planus

2010

Background: Oral lichen planus is an inflammatory chronic disease with an autimmune pathogenesis and unknown etiology that affects oral mucosa, with or without the involvement of the skin and other mucous membranes. The principal histological characteristics are the degeneration of the basal cell layer and the abnormal infiltration of inflammatory cells into the subepithelial layer of connective tissue. Objectives: This study is aimed to appraise if lingual lichen planus (LLP) is sustained by alteration of the oral microcirculation and if this abnormal vascularisation increases the degeneration of basal keratinocytes and the disruption of the basement membrane. Materials and Methods: Fiftee…

Human papillomaviruses in oral carcinoma and oral potentially malignant disorders: a systematic review

2011

Oral Diseases (2011) 17 (Suppl. 1), 58–72 Objectives:  Human papillomavirus (HPV) in oral carcinoma (OSCC) and potentially malignant disorders (OPMD) is controversial. The primary aim was to calculate pooled risk estimates for the association of HPV with OSCC and OPMD when compared with healthy oral mucosa as controls. We also examined the effects of sampling techniques on HPV detection rates. Methods:  Systematic review was performed using PubMed (January 1966–September 2010) and EMBASE (January 1990–September 2010). Eligible studies included randomized controlled, cohort and cross-sectional studies. Pooled data were analysed by calculating odds ratios, using a random effects model. Risk o…

Preoperative oral practices and incidence of postoperative complications in hospital medical-surgical procedures: A meta-analysis

2023

 Oral decay prior to a hospital medical-surgical procedure is a risk factor for the development of postoperative complications. However, perioperative oral practices as a protective factor have not been studied. This review aims to evaluate the effectiveness of perioperative oral practices in the reduction of risk of developing postoperative complications in in-hospital medical surgical procedures. This review and meta-analysis was conducted according to Cochrane guidelines. Medline, Scopus, Scielo, and Cochrane were consulted. Articles of the previous 10 years concerning adult patients undergoing perioperative oral practices prior to hospital medical-surgical procedures, were included. Dat…

BIOMONITORAGGIO DELL’INQUINAMENTO ATMOSFERICO MEDIANTE L’USO DI LICHENI COME BIOACCUMULATORI NEL CENTRO URBANO DI MARSALA (TP)

2008

È stato avviato uno studio di biomonitoraggio nel centro urbano di Marsala. Come altre città siciliane, pur non essendo interessata da importanti attività industriali, Marsala è caratterizzata da un inquinamento legato ad attività antropiche minori, quali l’uso dei combustibili fossili per autotrazione, per il riscaldamento domestico e per la navigazione. Il contesto geomorfologico in cui si sviluppa la città, ubicata in una zona pianeggiante, non determina alcun ostacolo importante alla circolazione degli inquinanti operata dai forti e costanti venti che spirano dal mare. Il campionamento è stato effettuato nel gennaio 2007 in 27 stazioni distribuite su un’area di circa 25 km2. In ogni sta…

Lichen sclerosus as a cause of recurrent cystitis: case report and review of the literatury.

2012

Candida biotypes in patients with oral leukoplakia and lichen planus. Candida biotypes in leukoplakia and lichen planus.

1996

Prevalence of yeasts in 35 leukoplakia and 34 oral lichen planus patients was compared with that observed in persons without oral diseases. Serotype and morphotype were determined on Candida albicans isolates. Yeasts were isolated from the oral cavity specimens of 43.7% of the patients. C. albicans (serotype A) was the predominant species (76% in leukoplakia, 88.2% in lichen planus and 60.8% in healthy persons). Sixteen morphotypes were encountered on malt extract agar, being 732, 733, 734, 753 and 754 the most frequently found. Morphotypes SP1N and SP1Y were the most common on Sabouraud-trypheniltetrazolium agar (68.4% of the isolates from leukoplakia and 73.3% from lichen planus, but only…

Polyphasic taxonomy of a novel yeast isolated from antarctic environment; description of Cryptococcus victoriae sp. nov.

1999

In 1992 some samples of mosses, lichens and soils were collected from Botany Bay, Southern Victoria Land (77 degrees 01' S 162 degrees 32' E) and, as a result of a routine screening programme some yeasts were isolated. One of them, designated as strain G5, showed marked differences when compared to other antarctic yeasts. According to morphological and physiological characteristics, we were able to identify the strain G5 as a yeast belonging to the genus Cryptococcus. Some characteristics of this genus are the growth response to myo-inositol, celobiose, raffinose and D-glucuronate, no-fermentation, the absence of mycelium and pseudomycelium, asexual reproduction, Diazolium blue B test (DBB)…