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| Registros recuperados: 102 | |
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| Filip,A.G.; Clichici,S.; Daicoviciu,D.; Ion,R.M.; Tatomir,C.; Rogojan,L.; Opris,I.; Mocan,T.; Olteanu,D.; Muresan,A.. |
| Photodynamic therapy (PDT) mediated by oxidative stress causes direct tumor cell damage as well as microvascular injury. To improve this treatment new photosensitizers are being synthesized and tested. We evaluated the effects of PDT with 5,10,15,20-tetrakis(4-methoxyphenyl)-porphyrin (TMPP) and its zinc complex (ZnTMPP) on tumor levels of malondialdehyde (MDA), reduced glutathione (GSH) and cytokines, and on the activity of caspase-3 and metalloproteases (MMP-2 and -9) and attempted to correlate them with the histological alterations of tumors in 3-month-old male Wistar rats, 180 ± 20 g, bearing Walker 256 carcinosarcoma. Rats were randomly divided into five groups: group 1, ZnTMPP+irradiation (IR) 10 mg/kg body weight; group 2, TMPP+IR 10 mg/kg body... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Photodynamic therapy; Oxidative stress; Apoptosis; Tetrapyrrolic macrocycles; Cytokines. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2011000100008 |
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| Silva,José Bruno Nunes Ferreira da; Oliveira,Samara Kelly Mendonça de; Campos,Ingrid Araújo; Carvalho-Júnior,Carlson Helder Reis de; Coutinho,Thiago da Cunha; Silva,Teresinha Gonçalves. |
| BACKGROUND: Sepsis is a systemic inflammation associated with infection caused by pathogenic micro-organisms with high mortality rates. OBJECTIVE: In this study, we investigated the protective effect of Propionibacterium acnes-killed against polymicrobial sepsis induced by cecal ligation and puncture. METHODS: The mice were treated by intramuscular route in 1, 3, 5, and 7 days before the cecal ligation and puncture induction. The control group animals received vehicle (saline solution 0.9%) and the animals of the treated group received the P. acnes-killed (0.4 mg/animal). After anesthesia, midline laparotomy was performed with exposure of cecum followed by ligature and one transverse perforation of the same, with a 18 G needle, for induction of lethal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Propionibacterium acnes; Immunomodulation; Sepsis; Cytokines. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100004 |
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| Korish,Aida Abdelhamid; Arafa,Maha Mohamed. |
| BACKGROUND: Severe pathogenic infection triggers excessive release of cytokines as part of the massive inflammatory response associated with septic shock. OBJECTIVES: To investigate the protective effect of caffeic acid phenethye ester (CAPE) against lipopolysaccharide (LPS) induced endotoxemia, hepatic and neuronal damage and the associated systemic inflammatory response (SIR). METHODS: Fifty male Wister rats were divided into: control, LPS, and CAPE+LPS groups. Plasma concentrations of various cytokines, including TNF-α, IL-1α, IL-1β, IL-6, IL-4, IL-10, and sICAM-1 were evaluated. In addition, the histopathological changes in the hepatic and neural cells were assessed. RESULTS: The LPS group showed high inflammatory cytokines and sICAM-1 levels... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lipopolysaccharides; Septic shock; Systemic inflammatory response syndrome; Cytokines. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702011000400006 |
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| Marinho,M.; Langoni,H.; Oliveira,S. L.; Lima,V. M. F.; Peiró,J. R.; Perri,S. H. V.; Carreira,R.. |
| Immune response to leptospirosis is mainly humorally mediated, and involves opsonization of leptospires for phagocytosis by macrophages and neutrophils. However, some aspects are still unknown. For a more detailed analysis of the cellular immune response to leptospirosis infection, trials were carried out in order to determine the hydrogen peroxide and nitric oxide (H2O2 and NO) production stimulated or not by Interferon-gamma. The participation of some specific cytokines, such as Tumor Necrosis Factor-alpha (TNF-alpha); Interferon-gamma (IFN-gamma); Interleukin-6 (IL-6); and Interleukin-4 (IL-4), in the immunopathology of this infection was also investigated. For this purpose, we analyzed the supernatant from peritoneal macrophage cell culture and the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leptospirosis; Cytokines; Cellular immunity. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992005000200009 |
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| Ward,L.S.; Fernandes,G.A.. |
| Although the role of interleukin-2 (IL-2) and interferon gamma (<FONT FACE="Symbol">g</FONT>IFN) is still poorly understood in hyperthyroid diseases, it is reasonable to assume that these cytokines may be present at higher levels in Graves' disease (GD) than in other primarily non-autoimmune thyroid diseases. In order to look for an easy method to distinguish GD from primarily non-autoimmune causes of hyperthyroidism, we compared 13 healthy individuals with 21 treated and untreated hyperthyroid GD patients and with 19 patients with hyperthyroidism due to other etiologies: 7 cases of multinodular goiter, 5 cases of excessive hormone replacement and 7 cases of amiodarone-associated hyperthyroidism. All patients presented low TSH levels and a... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Cytokines; IL-2; Hyperthyroidism; Graves' disease; Diagnosis. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000000100009 |
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| Zeoti,D.M.; Figueiredo,J.F.C.; Chiossi,M.P.V.; Roselino,A.M.F.. |
| Pemphigus foliaceus (PF) is characterized by acantholysis determined by IgG4 binding to desmoglein I, a 160-kDa desmosomal glycoprotein. To investigate the immunopathological aspects of Brazilian PF, we determined levels of serum cytokines in patients with PF. Twenty-five patients with PF and a control group consisting of 10 healthy individuals were studied. Serum IL-2, IL-4, IL-5, IL-10, IL-12 and IFN-gamma were measured in the two groups by ELISA. The median concentration of IL-2 was lower in PF patients compared to the control group (0.45 and 9.50 pg/ml, respectively), as also was the concentration of IL-4 (0.26 and 10.16 pg/ml, respectively). The same was observed for IL-5 (7.94 and 15.74 pg/ml, respectively) and for IFN-gamma (5.90 and 8.58 pg/ml,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cytokines; Pemphigus; Pemphigus foliaceus; Fogo selvagem; Bullous dermatoses. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000000900012 |
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| Kang,DR; Belal,SA; Song,KD; Yoon,C; Park,BY; Shim,KS. |
| ABSTRACT β-conglycinin from soybean has been recognized as one of the major feed allergens. This study investigated the effects of β-conglycinin-induced allergic sensitization on chicks’ small intestines. A total of 40 7-day-old (100 g) chicks were divided into four groups as control, β-conglycinin 1 h, β-conglycinin 6 h, and β-conglycinin 12 h. All treatment groups were administered 60 mg of β-conglycinin/chick and small intestine samples were collected. β-conglycinin-induced allergic sensitization marginally damages the epithelium lining of the duodenum villi and, in addition, significantly increases the accumulation of mast cells in the lamina propria and crypt of the duodenum. Moreover, the TNF-α level significantly increased in all β-conglycinin... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Β-conglycinin; Mucosal immune response; Cytokines; Chick. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200313 |
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| Costa,Ramon Teixeira; Araújo,Orlei Ribeiro de; Brunialti,Milena Karina Coló; Assunção,Murilo Santucci Cesar; Azevedo,Luciano César Pontes; Freitas,Flávio; Salomão,Reinaldo. |
| ABSTRACT Objective: We evaluated the kinetics of cytokines belonging to the T helper1 (Th1), Th2, and Th17 profiles in septic patients, and their correlations with organ dysfunction and hospital mortality. Methods: This was a prospective observational study in a cohort of septic patients admitted to the intensive care units (ICU) of three Brazilian general hospitals. A total of 104 septic patients and 53 health volunteers (controls) were included. Plasma samples were collected within the first 48 h of organ dysfunction or septic shock (0D), after seven (D7) and 14 days (D14) of follow-up. The following cytokines were measured by flow cytometry: Interleukin-1β (IL-1β), IL-2, IL-6, IL-8, IL-10, IL-12/23p40, IL-17, IL-21, tumor necrosis factor-α (TNF-α),... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sepsis; Cytokines; Th response; Organ dysfunction; SOFA. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702019000200079 |
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| Pitrez,P.M.C.; Machado,D.C.; Jones,M.H.; Andrade,F.; Camozzato,C.; Stein,R.T.. |
| Wheezing associated with respiratory viral infections in infancy is very common and results in high morbidity worldwide. The Th1/Th2 pattern of immune response in these patients remains unclear and previous studies have shown controversial results. The aim of the present study was to compare the type of Th1/Th2 cytokine response between infants with acute bronchiolitis, recurrent wheezing and upper respiratory infections from a developing country. Infants younger than 2 years of age admitted to Hospital São Lucas, Porto Alegre, RS, Brazil, between May and November 2001, with an acute episode of wheezing associated with viral respiratory infection were selected. Subjects with upper respiratory infections from the emergency department were selected for the... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Acute bronchiolitis; Inflammation; Interferon-gamma; Interleukin-4; Cytokines. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005000100008 |
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| Moreira,A.L.; Wang,J.; Sarno,E.N.; Kaplan,G.. |
| Thalidomide has been shown to selectively inhibit TNF-<!-- $MVD$:face("Symbol") --><FONT FACE="Symbol">a</font> production in vitro by lipopolysaccharide (LPS)-stimulated monocytes. TNF-<!-- $MVD$:face("Symbol") --><FONT FACE="Symbol">a</font> has been shown to play a pivotal role in the pathophysiology of endotoxic shock. Using a mouse model of LPS-induced shock, we investigated the effects of thalidomide on the production of TNF-<!-- $MVD$:face("Symbol") --><FONT FACE="Symbol">a</font> and other cytokines and on animal survival. After injection of 100-350 µg LPS into mice, cytokines including TNF-<!-- $MVD$:face("Symbol") --><FONT FACE="Symbol">a</font>, IL-6, IL-10, IL-1ß, GM-CSF... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Endotoxic shock; Thalidomide; Cytokines; Inflammation. |
| Ano: 1997 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997001000010 |
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| Licinio,J.; Frost,P.. |
| Cytokines are molecules that were initially discovered in the immune system as mediators of communication between various types of immune cells. However, it soon became evident that cytokines exert profound effects on key functions of the central nervous system, such as food intake, fever, neuroendocrine regulation, long-term potentiation, and behavior. In the 80's and 90's our group and others discovered that the genes encoding various cytokines and their receptors are expressed in vascular, glial, and neuronal structures of the adult brain. Most cytokines act through cell surface receptors that have one transmembrane domain and which transduce a signal through the JAK/STAT pathway. Of particular physiological and pathophysiological relevance is the fact... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Central nervous system; Cytokines; Immune system; Neuroendocrine regulation; Fever; Food intake. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000001000003 |
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| Bueno,V.; Pestana,J.O.M.. |
| Organ transplantation can be considered as replacement therapy for patients with end-stage organ failure. The percent of one-year allograft survival has increased due, among other factors, to a better understanding of the rejection process and new immunosuppressive drugs. Immunosuppressive therapy used in transplantation prevents activation and proliferation of alloreactive T lymphocytes, although not fully preventing chronic rejection. Recognition by recipient T cells of alloantigens expressed by donor tissues initiates immune destruction of allogeneic transplants. However, there is controversy concerning the relative contribution of CD4+ and CD8+ T cells to allograft rejection. Some animal models indicate that there is an absolute requirement for CD4+ T... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Transplantation; Rejection; T cells; Cytokines; Chemokines. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2002001100001 |
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| Oliveira,S.C.; Harms,J.S.; Rech,E.L.; Rodarte,R.S.; Bocca,A.L.; Goes,A.M.; Splitter,G.A.. |
| Cellular immune responses are a critical part of the host's defense against intracellular bacterial infections. Immunity to Brucella abortus crucially depends on antigen-specific T cell-mediated activation of macrophages, which are the major effectors of cell-mediated killing of this organism. T lymphocytes that proliferate in response to B. abortus were characterized for phenotype and cytokine activity. Human, murine, and bovine T lymphocytes exhibited a type 1 cytokine profile, suggesting an analogous immune response in these different hosts. In vivo protection afforded by a particular cell type is dependent on the antigen presented and the mechanism of antigen presentation. Studies using MHC class I and class II knockout mice infected with B. abortus... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: T cell subsets; Brucella abortus; Knockout mice; Cytokines; Intracellular pathogens; Genetic immunization. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000100010 |
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| VORONOV,E.; APTE,R. N.; SOFER,S.. |
| Envenomation by insects, snakes, scorpions, and spiders involves the activation of the inflammatory system with the release and activation of pro-inflammatory cytokines, chemotactic mediators, cellular infiltration, and other vasoactive mediators. Activation of the inflammatory system and its cascade of events play a major role in the pathogenesis of envenomation, its clinical picture, and outcome. Additional clinical and laboratory studies are required to characterize the exact mechanisms by which the inflammatory system affects the pathophysiology, clinical course, and complications following envenomations. A better understanding of the involvement of the inflammatory cascade in different envenoming syndromes may have future therapeutic benefits. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Systemic inflammatory response; Cytokines; Pro-inflammatory cytokines; Chemotactic mediators; Vasoactive mediators. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79301999000100002 |
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| Ma,X.M.; Bao,G.SH.; Wan,J.M.; Liao,D.J.; Yin,SH.F.; Meng,X.Q.; Zhou,G.K.; Lu,X.M.; Li,H.Y.. |
| The objective of the present study was to determine if the combination of alkaloids from Sophora moorcroftiana seeds and albendazole might be effective in the treatment of experimental echinococcosisin female NIH mice (6 weeks old and weighing 18-20 g, N = 8 in each group) infected withprotoscolices of Echinococcus granulosus. Viable protoscolices (N = 6 x 103) were cultured in vitro in 1640 medium and mortality was calculated daily. To determine the in vivo efficacy, mice were inoculated intraperitoneally with viable protoscolices and then treated once daily by gavage for three months with the alkaloids (50 mg kg-1 day-1) and albendazole (50 mg kg-1 day-1), separately and in combination (both alkaloids at 25 mg kg-1 day-1 and albendazole at 25 mg kg-1... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sophora moorcroftiana; Echinococcus granulosus; Alkaloids; Cytokines; Ethnobotany; Therapeutics. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007001000014 |
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| ARANCIBIA,SERGIO A; BELTRÁN,CAROLL J; AGUIRRE,ISABEL M; SILVA,PAULINA; PERALTA,ALEXIS L; MALINARICH,FRANO; HERMOSO,MARCELA A. |
| During an infection, one of the principal challenges for the host is to detect the pathogen and activate a rapid defensive response. The Toll-like family of receptors (TLRs), among other pattern recognition receptors (PRR), performs this detection process in vertebrate and invertebrate organisms. These type I transmembrane receptors identify microbial conserved structures or pathogen-associated molecular patterns (PAMPs). Recognition of microbial components by TLRs initiates signaling transduction pathways that induce gene expression. These gene products regulate innate immune responses and further develop an antigen-specific acquired immunity. TLR signaling pathways are regulated by intracellular adaptor molecules, such as MyD88, TIRAP/Mal, between others... |
| Tipo: Journal article |
Palavras-chave: Toll-like receptors; Innate Immunity; Cytokines; MyD88; NFkB. |
| Ano: 2007 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602007000200001 |
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| Oliveira,Gisele P.; Dias,Cristina M.; Pelosi,Paolo; Rocco,Patricia R.M.. |
| Glutamine (Gln) is an important energy source and has been used as a supplementary energy substrate. Furthermore, Gln is an essential component for numerous metabolic functions, including acid-base homeostasis, gluconeogenesis, nitrogen transport and synthesis of proteins and nucleic acids. Therefore, glutamine plays a significant role in cell homeostasis and organ metabolism. This article aims to review the mechanisms of glutamine action during severe illnesses. In critically ill patients, the increase in mortality was associated with a decreased plasma Gln concentration. During catabolic stress, Gln consumption rate exceeds the supply, and both plasma and skeletal muscle pools of free Gln are severely reduced. The dose and route of Gln administration... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Heat shock protein; Apoptosis; Cytokines; Glutamine. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652010000200018 |
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| Registros recuperados: 102 | |
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