Search results for "CIG"
showing 10 items of 201 documents
Cellular and Molecular Signatures of Oxidative Stress in Bronchial Epithelial Cell Models Injured by Cigarette Smoke Extract
2022
Exposure of the airways epithelium to environmental insults, including cigarette smoke, results in increased oxidative stress due to unbalance between oxidants and antioxidants in favor of oxidants. Oxidative stress is a feature of inflammation and promotes the progression of chronic lung diseases, including Chronic Obstructive Pulmonary Disease (COPD). Increased oxidative stress leads to exhaustion of antioxidant defenses, alterations in autophagy/mitophagy and cell survival regulatory mechanisms, thus promoting cell senescence. All these events are amplified by the increase of inflammation driven by oxidative stress. Several models of bronchial epithelial cells are used to study the molec…
Insect pests of the Herbarium of the Palermo botanical garden and evaluation of semiochemicals for the control of the key pest Lasioderma serricorne …
2020
Abstract The herbaria are scientific tools of great importance that preserve extinct, rare, endemic, and common plant species and also have importance as Cultural Heritage for their historical and esthetical value. Herbaria can be infested by several insect pests feeding on dried plants, and their management is often complicated and difficult as the use of chemical insecticides can have negative drawbacks. This suggests a strong need for alternative control tools such as the use of semiochemicals to develop Integrated Pest Management (IPM) programs. In order to identify the main insect pests that determine the damages on the exsiccata stored in the Palermo Botanical Garden's Herbarium, one …
Cigarette smoke affects the onco-suppressor DAB2IP expression in bronchial epithelial cells of COPD patients
2019
AbstractCigarette smoke is a risk factor for COPD and lung cancer. In cancer, epigenetic modifications affect the expression of Enhancer of Zester Homolog 2 (EZH2), and silenced disabled homolog 2 interacting protein gene (DAB2IP) (onco-suppressor gene) by Histone H3 tri-methylation in lysine 27 (H3K27me3). In“ex vivo”studies, we assessed EZH2, H3K27me3 and DAB2IP immunoreactivity in bronchial epithelial cells from COPD patients (smokers, ex-smokers), Smoker and control subjects. In“in vitro” experiments we studied the effect of cigarette smoke extract (CSE) on EZH2/H3K27me3/DAB2IP expression, apoptosis, invasiveness, and vimentin expression in 16HBE, primary cells, and lung cancer cell lin…
Latvijas Evaņģēliski luteriskās baznīcas bīskapa Kārļa Irbes izpratne par ārmisiju un šīs izpratnes ietekme uz Ārmisijas nozares veidošanu baznīcā
2021
Pirms aptuveni simts gadiem tika nodibināta LELB. Jaunā Baznīca piedzīvoja dažādus izaicinājumus, jo karš bija atstājis lielus postījumus, un bija jārada juridiskais pamats Baznīcas darbībai jaunajā Latvijas valstī. Tad tika veidota arī LELB Ārmisijas nozare, izsūtot pirmo LELB misionāri Annu Irbi. Ārmisijas veicinātājs bija LELB pirmais bīskaps Kārlis Irbe. Darba nolūks ir iepazīt un labāk saprast LELB aktualitātes ārmisijas jomā 20. gs. pirmajā pusē, kā arī aplūkot misijas teoloģiskos pamatus, kas aizveda līdz Ārmisijas nozares izveidošanai LELBā. Tika secināts, ka Kārļa Irbes kalpošana norisinājās divu misijas paradigmu kontekstā – brāļu draudžu misijas kalpošana pazemībā, sludinot Dieva…
Characterization of Thin Film CIG(S,Se)2 submodules using Laser Beam Induced Current Technique
2015
Nowadays, an important class of thin film solar cells consists of CuInGa(S,Se)2 (CIGSSe) solar cells, i.e., composed of Copper, Indium, Gallium, Sulfur and Selenide. Thanks to their electrical and optical properties and to the technological development, thin film integrated photovoltaic modules have nowadays obtained relatively good values of efficiency. In this work, we have performed the electrical and optical characterization of a CIGSSe sub-module by using both a solar simulator equipment and the Laser Beam Induced Current (LBIC) technique.
Effects of PPARγ agonists on the expression of leptin and vascular endothelial growth factor in breast cancer cells.
2013
The obesity hormone leptin has been implicated in breast cancer development. Breast cancer cells express the leptin receptor and are able to synthesize leptin in response to obesity-related stimuli. Furthermore, leptin is a positive regulator of vascular endothelial growth factor (VEGF) and high levels of both proteins are associated with worse prognosis in breast cancer patients. Peroxisome proliferator-activated receptor γ (PPARγ) ligands are therapeutic agents used in patient with Type 2 diabetes and obesity which have recently been studied for their potential anti-tumor effect. Here, we studied if these compounds, ciglitazone and GW1929, can affect the expression of leptin and VEGF in b…
Cigarette smoke increases BLT2 receptor functions in bronchial epithelial cells: in vitro and ex vivo evidence
2013
Summary Leukotriene B4 (LTB4) is a neutrophil chemotactic molecule with important involvement in the inflammatory responses of chronic obstructive pulmonary disease (COPD). Airway epithelium is emerging as a regulator of innate immune responses to a variety of insults including cigarette smoke, the major risk factor for COPD. In this study we have explored whether cigarette smoke extracts (CSE) or soluble mediators present in distal lung fluid samples (mini-bronchoalveolar lavages) from smokers alter the expression of the LTB4 receptor 2 (BLT2) and peroxisome proliferator-activated receptor-α (PPAR-α) in bronchial epithelial cells. We also evaluated the effects of CSE on the expression of i…
Efecto de la sobrecarga oral con grasa insaturada sobre los marcadores de estrés oxidativo e inflamación : estudios de lipemia postprandial en sujeto…
2011
Objetivos: Estudiar el efecto en los marcadores de estrés oxidativo (EO) en linfomonocitos circulantes y de inflamación sistémica relacionada con la arteriosclerosis tras un sobrecarga oral con grasa (SOG) monoinsaturada en sujetos con hipercolesterolemia familiar (HF) heterocigota y comparar esta respuesta con la obtenida en sujetos normolipémicos normoglucémicos. Sujetos y métodos: Se estudiaron 14 pacientes FH y 22 voluntarios sanos como grupo control. En ambos, se determinaron el cociente glutation oxidado/reducido y niveles de malondialdehido en linfomonocitos y niveles plasmáticos de IL-6, IL8, TNFα, eotaxina, MCP-1 y MIP-1α en ayunas y a las 2, 4, 6 y 8 horas tras una SOG. Asimismo, …
Exposure to cigarette smoke extract and lipopolysaccharide modifies cytoskeleton organization in bronchial epithelial cells
2017
The integrity of the respiratory epithelium is crucial for airway homeostasis. Tobacco smoke exposure and recurrent infections of the airways play a crucial role in the progression and in the decline of the respiratory function in chronic obstructive pulmonary disease (COPD). The aim of this study was to detect differentially expressed proteins in a bronchial epithelial cell line (16-HBE) stimulated with cigarette smoke extract (CSE) and lipopolysaccharide (LPS), a constituent of gram-negative bacteria, alone and/or in combination, by using two-dimensional electrophoresis (2DE) analysis coupled with matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. Western blot a…
Oxidative stress and innate immunity responses in cigarette smoke stimulated nasal epithelial cells
2013
Cigarette smoke extracts (CSE) may play a significant role in diseases of the upper airway including chronic rhinosinusitis. Even short term exposure of cigarette smoke has adverse effects on mitochondrial functions and redox homeostasis in tissues which may progress to further complications associated with chronic smoking. Cigarette smoke alters toll-like receptor 4 (TLR4) expression and activation in bronchial epithelial cells. Carbocysteine is an anti-oxidant and mucolytic agent. The effects of carbocysteine on CSE induced oxidative stress and on associated innate immune and inflammatory responses in nasal epithelial cells are largely unknown. The present study was aimed to assess in CSE…