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1.
Ann Clin Biochem ; 44(Pt 4): 353-9, 2007 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-17663088

RESUMO

BACKGROUND: An elevated serum remnant lipoprotein cholesterol (RLP-C)/triglyceride (TG) ratio has not been evaluated as an index of familial type III hyperlipidaemia defined by the presence of beta-VLDL and apolipoprotein (Apo) E2/2 phenotype in the Japanese hyperlipidaemic population. METHODS: Serum lipids and lipoproteins from 514 individuals (200 men and 314 women, mean age 58 years) with total cholesterol >6.22 mmol/L and TG between 2.26 mmol/L and 9.04 mmol/L, selected from 25,080 subjects visiting the clinics for health checkup were analysed for a possible relationship with familial type III hyperlipoproteinaemia. RESULTS: Median RLP-C concentration and RLP-C/TG ratio were 0.30 and 0.11 mmol/L, respectively. When compared between subjects with (31 cases) and without (483 cases) a broad-beta band on electrophoresis, the RLP-C concentrations and RLP-C/TG ratio were 0.77 +/- 0.43 mmol/L versus 0.34 +/- 0.16 mmol/L (P<0.0001) and 0.15 +/- 0.023 versus 0.11 +/- 0.027 (P<0.0001), respectively. Three cases with broad-beta band positive (the presence of beta-VLDL) showed RLP-C/TG ratio greater than 0.23 and RLP-C greater than 0.78 mmol/L, suggestive of type III hyperlipoproteinaemia, despite a lack of characteristic Apo E2/2 homozygosity. Cases with Apo E/Apo CIII ratio greater than 1.0 were not detected in this study group. CONCLUSION: Serum RLP-C concentration and RLP-C/TG ratio, together with Apo E/Apo CIII ratio appear to be useful for screening familial type III hyperlipidaemia in the Japanese hyperlipidaemic population.


Assuntos
Apolipoproteínas/sangue , Colesterol/sangue , Hiperlipoproteinemia Tipo III/diagnóstico , Lipoproteínas/sangue , Triglicerídeos/sangue , Adolescente , Adulto , Idoso , Apolipoproteína C-III/sangue , Apolipoproteína E2/sangue , Feminino , Humanos , Hiperlipidemias/sangue , Hiperlipidemias/diagnóstico , Hiperlipoproteinemia Tipo III/sangue , Lipoproteínas IDL/sangue , Masculino , Programas de Rastreamento , Pessoa de Meia-Idade
2.
World J Gastroenterol ; 12(21): 3393-9, 2006 Jun 07.
Artigo em Inglês | MEDLINE | ID: mdl-16733857

RESUMO

AIM: To investigate the relationship between ulcerative colitis (UC) clinical activity index (CAI) and circulating levels of IL-1ra, IL-10, IL-6 and IL-18. METHODS: Blood levels of IL-1ra, IL-10, IL-6 and IL-18 were measured in 31 patients with active UC, the mean CAI was 11.1, ranging from 5-25; and 12 healthy individuals as controls. Patients were given granulocyte and monocyte adsorptive apheresis (GMA) with Adacolumn. Leucocytes which bear the FcgammaR and complement receptors were adsorbed to the column leucocytapheresis carriers. Each patient could receive up to 11 GMA sessions over 8 wk. RESULTS: We found strong correlations between CAI and IL-10 (r = 0.827, P < 0.001), IL-6 (r = 0.785, P < 0.001) and IL-18 (r = 0.791, P < 0.001). IL-1ra was not correlated with CAI. Following GMA therapy, 24 of the 31 patients achieved remission and the levels of all 4 cytokines fell to the levels in healthy controls. Further, blood levels of IL-1ra and IL-10 increased at the column outflow and inflow at 60 min suggesting release from leucocytes that adhered to the carriers.


Assuntos
Colite Ulcerativa/sangue , Colite Ulcerativa/imunologia , Citocinas/sangue , Interleucinas/sangue , Leucaférese/métodos , Adolescente , Adulto , Contagem de Células Sanguíneas , Colite Ulcerativa/terapia , Citocinas/fisiologia , Feminino , Granulócitos/patologia , Granulócitos/fisiologia , Humanos , Inflamação/sangue , Inflamação/fisiopatologia , Macrófagos/patologia , Macrófagos/fisiologia , Masculino , Pessoa de Meia-Idade , Monócitos/patologia , Monócitos/fisiologia , Índice de Gravidade de Doença
3.
PLoS One ; 11(6): e0156277, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27295180

RESUMO

One standard treatment option for advanced-stage cancer is surgical resection of malignant tumors following by adjuvant chemotherapy and chemoradiotherapy. Additionally, neoadjuvant chemotherapy may be applied if required. During the time course of treatments, patients are generally followed by computed tomography (CT) surveillance, and by tumor marker diagnosis. However, currently, early evidence of recurrence and/or metastasis of tumors with a clinically relevant biomarker remains a major therapeutic challenge. In particular, there has been no validated biomarker for predicting treatment outcomes in therapeutic settings. Recently, we have looked at glycoforms of serum α1-acid glycoprotein (AGP) by using a crossed affinoimmunoelectrophoresis with two lectins and an anti-AGP antibody. The primary glycan structures of AGP were also analyzed by a mass spectrometer and a novel software in a large number of patients with various cancers. Accordingly, the relative abundance of α1,3fucosylated glycans in AGP (FUCAGP) was found to be significantly high in cancer patients as compared with the healthy controls. Further, strikingly elevated levels of FUCAGP were found in patients with poor prognosis but not in patients with good prognosis. In the current study, levels of FUCAGP in serum samples from various cancer patients were analyzed and 17 patients including 13 who had undergone chemotherapy were followed for several years post operation. FUCAGP level determined diligently by using a mass spectrometer was found to change along with disease prognosis as well as with responses to treatments, in particular, to various chemotherapies. Therefore, FUCAGP levels measured during following-up of the patients after operation appeared to be clinically relevant biomarker of treatment intervention.


Assuntos
Biomarcadores Tumorais/sangue , Neoplasias/diagnóstico , Orosomucoide/análise , Polissacarídeos/sangue , Sequência de Carboidratos , Estudos de Casos e Controles , Fucose/metabolismo , Glicosilação , Humanos , Monitorização Fisiológica/métodos , Neoplasias/sangue , Neoplasias/cirurgia , Polissacarídeos/análise , Polissacarídeos/metabolismo , Período Pós-Operatório , Prognóstico , Análise de Sobrevida , Resultado do Tratamento
4.
Surgery ; 134(5): 818-26, 2003 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-14639361

RESUMO

BACKGROUND: The objective of this study was to investigate the effects of OPC-6535 on Propionibacterium acnes-primed and lipopolysaccharide-induced liver injury in the rat. METHODS: P. acnes was administered intravenously to the rat at 16 mg/kg 7 days before the experiments. In liver perfusion experiments, lipopolysaccharide was mixed in perfusion buffer at 2.5 microg/mL. The chemiluminescence method and histochemical reduction of nitro blue tetrazolium were used for detecting superoxide. Release of cytokines into the perfusate was examined. In in vivo experiments, lipopolysaccharide was administered intravenously to the rat at 200 microg/kg. Concentrations of aspartate aminotransferase (AST), alanine aminotransferase (ALT), and cytokines were determined in the plasma, and myeloperoxidase activity was measured in the liver tissue. OPC-6535 was given intravenously at 1 mg/kg 30 minutes before lipopolysaccharide challenge, and was then, in perfusion experiments, added to the buffer at 10 micromol/L. RESULTS: In perfusion experiments, P. acnes and lipopolysaccharide caused dramatic production of superoxide, tumor necrosis factor-alpha (TNF-alpha) and growth-related oncogene/cytokine-induced neutrophil chemoattractant-1 (GRO/CINC-1). Superoxide was mainly from hepatic macrophages. Treatment with OPC-6535 suppressed superoxide and TNF-alpha but did not affect GRO/CINC-1. In in vivo experiments, P. acnes and lipopolysaccharide increased the level of TNF-alpha, GRO/CINC-1, AST and ALT in the plasma, and myeloperoxidase activity in the liver. OPC-6535 reduced TNF-alpha, AST, and ALT, but did not affect GRO/CINC-1 or myeloperoxidase. CONCLUSION: Attenuation of liver injury by OPC-6535 is believed to be due to its inhibitory effects on superoxide and TNF-alpha production by hepatic macrophages in P. acnes- and lipopolysaccharide-treated rats.


Assuntos
Lipopolissacarídeos/farmacologia , Fígado/efeitos dos fármacos , Macrófagos/fisiologia , Superóxidos/metabolismo , Tiazóis/farmacologia , Fator de Necrose Tumoral alfa/fisiologia , Animais , Quimiocina CXCL1 , Quimiocinas CXC/fisiologia , Imidazóis/farmacologia , Peptídeos e Proteínas de Sinalização Intercelular/fisiologia , Fígado/irrigação sanguínea , Fígado/patologia , Medições Luminescentes , Masculino , Nitroazul de Tetrazólio/metabolismo , Perfusão , Peroxidase/metabolismo , Pirazinas/farmacologia , Ratos , Ratos Wistar
5.
Inflammation ; 26(4): 199-205, 2002 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-12184634

RESUMO

In active rheumatoid arthritis, large numbers of granulocytes and macrophages are found in the inflamed joints. These leucocytes can promote inflammation and tissue injury by releasing inflammatory cytokines, proteinases and oxygen derivatives. To see if granulocyte and monocyte (GM) depletion produces anti-inflammatory effect, GM adsorption apheresis was performed in rabbits with immune arthritis by using a column (Adacolumn) filled with cellulose diacetate beads (G-1 beads) as adsorptive carriers which selectively adsorb CD11b positive GMs. Injection of ovalbumin into the knee joints of ovalbumin-sensitized rabbits caused a marked increase in peripheral blood leucocytes, joint swelling, increased granulocyte adhesion to G-1 beads and elevated TNF-alpha production by peripheral blood mononuclear cells (PBMC). When rabbits received a 60 min adsorption apheresis, there was suppression of CD11b positive leucocyte infiltration into the joint and reduced joint swelling (P < 0.01) compared with controls. Additionally, there was a significant (p < 0.01) suppression of TNF-alpha production by PBMC in the post column blood. These results suggest that GM depletion may serve as a non-pharmacological strategy to modify inflammatory disorders.


Assuntos
Artrite Experimental/imunologia , Artrite Experimental/terapia , Granulócitos , Leucaférese , Monócitos , Ovalbumina/imunologia , Adsorção , Animais , Artrite Experimental/metabolismo , Artrite Experimental/patologia , Movimento Celular , Articulação do Joelho/patologia , Leucócitos/patologia , Leucócitos/fisiologia , Macrófagos/metabolismo , Monócitos/metabolismo , Neutrófilos/metabolismo , Coelhos , Superóxidos/metabolismo , Fator de Necrose Tumoral alfa/metabolismo
6.
Ther Apher Dial ; 7(1): 48-59, 2003 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-12921115

RESUMO

Apheresis has been recognized both economically and therapeutically as a novel approach for the treatment of inflammatory diseases, and certain others, which respond poorly to drug therapy. This report is about Adacolumn, an adsorptive carrier based granulocyte and monocyte apheresis device with a volume of 335 mL, filled with about 220 g of cellulose acetate beads of 2 mm diameter as the column adsorptive carriers. Pre- and post-column leukocyte counts have shown that the carriers adsorb about 65% of granulocytes, 55% of monocytes and 2% of lymphocytes from the blood in the column. Additionally, after apheresis, there is a marked decrease in inflammatory cytokines (TNF-alpha, IL-1beta, IL-6 and IL-8) produced by blood leukocytes, together with down-modulation of L-selectin and the chemokine receptor CXCR3. Adacolumn has been used to treat patients with rheumatoid arthritis, ulcerative colitis and HIV infection. Typical apheresis sessions have been 4-10, at a frequency of one or two sessions per week. Treatment of patients with Adacolumn has been associated with very promising efficacy and safety data. Accordingly, in Japan, Adacolumn has been approved by the Ministry of Health for the treatment of ulcerative colitia. Furthermore, Adacolumn met the required quality and safety standards for medical devices and received an EC certification (CE-mark) from TUV in 1999. However, although Adacolumn carriers are very efficient in depleting excess and activated granulocytes and monocytes/macrophages, the clinical efficacy associated with Adacolumn apheresis cannot be fully explained on the basis of reducing granulocytes and monocytes per se. Hence, a long lasting effect on inflammatory cytokine generation, chemokine activities or immunomodulation is likely, but the precise mechanisms involved are not fully understood yet.


Assuntos
Granulócitos , Inflamação/terapia , Leucaférese/instrumentação , Monócitos , Absorção , Artrite Reumatoide/diagnóstico , Artrite Reumatoide/terapia , Ensaios Clínicos como Assunto , Colite Ulcerativa/diagnóstico , Colite Ulcerativa/terapia , Doença de Crohn/diagnóstico , Doença de Crohn/terapia , Desenho de Equipamento , Segurança de Equipamentos , Feminino , Infecções por HIV/diagnóstico , Infecções por HIV/terapia , Hepatite C Crônica/diagnóstico , Hepatite C Crônica/terapia , Humanos , Inflamação/diagnóstico , Leucaférese/métodos , Masculino , Psoríase/diagnóstico , Psoríase/terapia , Sensibilidade e Especificidade , Índice de Gravidade de Doença , Falha de Tratamento
7.
Ther Apher Dial ; 7(3): 334-40, 2003 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-12924609

RESUMO

Granulocyte and monocyte adsorptive apheresis (GMA) using a column filled with cellulose acetate (CA) beads (carriers) has been associated with a significant clinical efficacy in patients with rheumatoid arthritis and ulcerative colitis. To obtain further understanding on the mechanisms of disease modification by cellulose acetate-carrier-based GMA, in the present study, we investigated the mechanisms of granulocyte and monocyte adhesion to CA beads following exposure of human peripheral blood to the carriers at 37 degrees C for up to 60 min under controlled conditions. Cellulose acetate beads selectively adsorbed granulocytes, monocytes. CD19+ (B cells) and CD56+ (NK cells) lymphocyte subpopulations. The granulocyte and monocyte adsorption was inhibited by heat-inactivated plasma and EDTA, indicating that the adsorption was plasma protein (immunoglobulin, complement) and calcium dependent. Accordingly, granulocyte and monocyte adsorption was markedly enhanced by coating the carriers with IgG. Similarly, C3b was adsorbed onto the CA beads as a marker of complement activation. The results indicated that IgG and active complement fragments mediated leukocyte adhesion to CA beads via the FcgammaR and/or leukocyte complement receptor like CR3. Additionally, CA beads induced loss of expression of TNF receptors on CD16- granulocytes and CD14+ monocytes, but not on CD3+ lymphocytes In conclusion, CA beads might be an appropriate biomaterial for inducing extracorporeal immunomodulation as a treatment for auto-immune diseases which are associated with pathological leukocyte activity.


Assuntos
Remoção de Componentes Sanguíneos/métodos , Moléculas de Adesão Celular/fisiologia , Celulose/análogos & derivados , Celulose/farmacologia , Granulócitos/fisiologia , Monócitos/fisiologia , Remoção de Componentes Sanguíneos/instrumentação , Ensaio de Imunoadsorção Enzimática , Feminino , Citometria de Fluxo , Granulócitos/citologia , Humanos , Técnicas In Vitro , Masculino , Monócitos/citologia , Probabilidade , Receptores de IgG/imunologia , Receptores do Fator de Necrose Tumoral/imunologia , Valores de Referência , Sensibilidade e Especificidade , Aderências Teciduais
8.
PLoS One ; 9(2): e89071, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24558470

RESUMO

Blood group-related glycans determining ABO and Lewis blood groups are known to function as attachment factors for most of the norovirus (NoV) strains. To identify binding specificity of each NoV, recombinant norovirus-like particles (VLPs) and human saliva samples with different ABO, Lewis phenotypes and secretor status have been commonly applied. When binding specificities of VLPs prepared from 16 different genotypes of NoVs in GI and GII genogroups were characterized in samples of human gastric mucosa compared to human saliva based on blood group phenotypes, considerable differences were observed for several strains. Novel binding specificities determined by an ELISA using preparations from human gastric mucosa were also ascertained by immunohistochemical analyses using human jejunal mucosa, widely believed to be susceptible to NoV infection. Further, A, B and O(H) blood group substances prepared from porcine and squid tissues were found to be effective for preventing ABO blood group-specific binding of VLPs to both saliva and mucosa samples. Therefore, these blood group substances might have potential for the prevention and treatment of NoV infection.


Assuntos
Antígenos de Grupos Sanguíneos/metabolismo , Infecções por Caliciviridae/sangue , Infecções por Caliciviridae/prevenção & controle , Norovirus/metabolismo , Polissacarídeos/metabolismo , Animais , Antígenos de Grupos Sanguíneos/uso terapêutico , Decapodiformes , Ensaio de Imunoadsorção Enzimática , Mucosa Gástrica/metabolismo , Humanos , Imuno-Histoquímica , Polissacarídeos/sangue , Ligação Proteica/fisiologia , Saliva/metabolismo , Suínos , Vírion/metabolismo
9.
Biomed Res Int ; 2013: 834790, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23509786

RESUMO

Human plasma α1-acid glycoprotein (AGP) from cancer patients and healthy volunteers was purified by sequential application of ion-exchange columns, and N-linked glycans enzymatically released from AGP were labeled and applied to a mass spectrometer. Additionally, a novel software system for use in combination with a mass spectrometer to determine N-linked glycans in AGP was developed. A database with 607 glycans including 453 different glycan structures that were theoretically predicted to be present in AGP was prepared for designing the software called AGPAS. This AGPAS was applied to determine relative abundance of each glycan in the AGP molecules based on mass spectra. It was found that the relative abundance of fucosylated glycans in tri- and tetra-antennary structures (FUCAGP) was significantly higher in cancer patients as compared with the healthy group (P < 0.001). Furthermore, extremely elevated levels of FUCAGP were found specifically in patients with a poor prognosis but not in patients with a good prognosis. In conclusion, the present software system allowed rapid determination of the primary structures of AGP glycans. The fucosylated glycans as novel tumor markers have clinical relevance in the diagnosis and assessment of cancer progression as well as patient prognosis.


Assuntos
Fucose/química , Espectrometria de Massas/métodos , Neoplasias/sangue , Neoplasias/diagnóstico , Orosomucoide/análise , Biomarcadores Tumorais/sangue , Estudos de Casos e Controles , Cromatografia por Troca Iônica , Progressão da Doença , Ensaio de Imunoadsorção Enzimática , Glicosilação , Humanos , Plasma/metabolismo , Polissacarídeos/química , Prognóstico , Software
10.
Ann Surg Oncol ; 14(6): 1880-9, 2007 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-17375356

RESUMO

BACKGROUND: We have previously demonstrated tumor-specific alpha1,2fucosylation, which is associated with resistance of tumor cells to anticancer treatment in human colorectal tumor tissues. By using the YB-2 monoclonal antibody, the resulting products have been identified as Y, Le(b), and H type 2 antigens in colorectal tumor tissues. METHODS: Immunohistochemical analyses of colorectal cancer tissues (74 specimens) were performed with a newly established mouse monoclonal antibody, YB-3 specifically recognizing H disaccharide (Fucalpha1,2Galbeta) structures, and anti-A, anti-B, YB-2, and anti-sialyl Lewis X (SLX) antibodies, together with the analyses of glycosyltransferases involved in the synthesis of ABH antigens in the same tissues. RESULTS: The YB-3 antibody enabled us to detect colorectal tumors, particularly tumors in the distal large intestine and the rectum, with high sensitivity (74.3%) and specificity (100%). From immunohistochemical and enzymatic analyses of colorectal tissues, we found that once alpha1,2fucosylation had proceeded in tumor tissues, blood group A or B antigen was also synthesized in approximately half of the tissues of A or B blood type, but not in their normal tissues. A correlation of survival rate with immunostaining of tissues was found only by YB-3 antibody and not by anti-A, anti-B, or anti-SLX antibody. CONCLUSIONS: As a predictor of postoperative prognosis of patients with colorectal cancer, immunodetection of alpha1,2fucosylated antigens with the YB-3 antibody seemed to be superior to blood groups A, B, or SLX antigen in colorectal tumor tissues.


Assuntos
Sistema ABO de Grupos Sanguíneos/análise , Antígenos de Neoplasias/análise , Biomarcadores Tumorais/análise , Neoplasias do Colo/patologia , Antígenos do Grupo Sanguíneo de Lewis/análise , Antígenos CD15/análise , Oligossacarídeos/análise , Neoplasias Retais/patologia , Anticorpos Monoclonais , Neoplasias do Colo/cirurgia , Dissacarídeos/análise , Feminino , Previsões , Fucosil Galactose alfa-N-Acetilgalactosaminiltransferase/análise , Glicosiltransferases/análise , Antígenos H-2 , Humanos , Masculino , Prognóstico , Neoplasias Retais/cirurgia , Antígeno Sialil Lewis X
11.
J Clin Apher ; 21(2): 121-8, 2006 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-16395727

RESUMO

Intraocular inflammation (uveoretinitis) is one major complication of Behcet's disease (BD) and responds poorly to drug therapy. This open prospective study was to assess the efficacy of selective granulocytapheresis in patients with refractory uveoretinitis of BD. Fourteen patients aged 20-56 years were treated. Granulocytapheresis was done with an Adacolumn filled with cellulose acetate leucocyte carries or beads that adsorb granulocytes and monocytes from the blood in the column. Each patient received 5 Adacolumn sessions at one session/week over 5 consecutive weeks. The study was designed to allow each patient to serve as his or her own control. The total numbers of ocular attacks (OA) were monitored for 6 months before and after 5 Adacolumn sessions. The number of OA (mean +/- SD) per patient for the 6 months before Adacolumn was 4.21 +/- 1.6 and for the 6 months post Adacolumn was 2.93 +/- 1.39 ( P = 0.0275). Nine patients (64%) improved and 5 did not change or worsened. Further, for a sub-group (n = 7) with duration of BD > or =5 years, the number of OA were 4.71 +/- 1.89 for the first 6 months and 2.29 +/- 1.38 for the second 6 months ( P = 0.0054). The corresponding values for a sub-group (n = 7) with duration of BD<5 years were 3.71 +/- 1.25 and 3.57 +/- 1.13, indicating that patients with long duration of BD are better responders. We conclude that granulocytapheresis might be effective and safe for patients with refractory ocular BD. Further studies are necessary to fully evaluate the clinical efficacy of granulocytapheresis for BD.


Assuntos
Síndrome de Behçet/terapia , Oftalmopatias/terapia , Granulócitos/patologia , Leucaférese , Adulto , Separação Celular/instrumentação , Separação Celular/métodos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Retinite/terapia , Terapia de Salvação/métodos , Resultado do Tratamento , Uveíte/terapia
12.
Dig Dis Sci ; 49(4): 565-71, 2004 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-15185858

RESUMO

Corticosteroid therapy of ulcerative colitis (UC) is associated with frequent adverse side effects and poor quality of life. Recently, adsorptive granulocyte and monocyte/macrophage apheresis has shown efficacy in patients with severe steroid refractory UC. The objective of this study was to investigate if, instead of corticosteroids, adsorptive leukocytapheresis has efficacy as the first-line therapy for steroid-naïve patients with active UC. Twenty patients, aged 15-49 years, with a mean clinical activity index (CAI) of 8.6 were recruited. Adsorptive leukocytapheresis was done with Adacolumn, which contains cellulose acetate beads as adsorptive carriers for granulocytes and monocytes (FcgammaR and complement receptors expressing leukocytes). Each patient received 6 to 10 leukocytapheresis sessions of 60-min duration, at 2 sessions/week. Efficacy was assessed 1 week after the last session. Post treatment, the mean CAI was 3.0 (P = 0001), and 17 of 20 patients (85%) were in remission. There were significant falls in C-reactive protein (P = 0.0003), total white cell counts (P = 0.003), neutrophils (P = 0.0029), and monocytes (P = 0.0038), an increase in lymphocytes (P = 0.001), and increases in the blood levels of soluble TNF-alpha receptors I (P = 0.0007) and II (P = 0.0045) in the column outflow (blood return to the patients). Further, at 8 months, 60% of patients had maintained their remission. No severe side effects were reported. In conclusion, adsorptive leukocytapheresis should reduce corticosteroid therapy in patients with moderate UC; cases with early-stage active disease may benefit most.


Assuntos
Colite Ulcerativa/diagnóstico , Colite Ulcerativa/terapia , Leucaférese/métodos , Adolescente , Corticosteroides/efeitos adversos , Corticosteroides/uso terapêutico , Adulto , Colite Ulcerativa/tratamento farmacológico , Endoscopia Gastrointestinal , Feminino , Seguimentos , Granulócitos , Humanos , Contagem de Linfócitos , Masculino , Pessoa de Meia-Idade , Monócitos , Probabilidade , Estudos Prospectivos , Indução de Remissão , Medição de Risco , Índice de Gravidade de Doença , Resultado do Tratamento
13.
Dig Dis Sci ; 47(6): 1334-41, 2002 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-12064810

RESUMO

Our aim was to understand the mechanism of immunological changes associated with the use of an adsorptive-type extracorporeal device (Adacolumn) that has been developed for selective adsorption of granulocytes and monocytes/macrophages from peripheral blood of patients with active ulcerative colitis. The column is filled with carriers (G-1 beads) that have a diameter of 2 mm and are made of cellulose diacetate. In peripheral blood treated with the G-1 beads or peripheral blood from patients with active ulcerative colitis following granulocyte and monocyte adsorption apheresis, a significant suppression of proinflammatory cytokines (tissue necrosis factor-alpha, interleukin-1beta, interleukin-6, and interleukin-8) production by leukocytes, neutrophil chemotaxis, down-regulation of leukocyte adhesion molecule (L-selectin) and neutrophil adhesion to interleukin-1beta-activated endothelial cells were observed. Furthermore, after granulocyte adsorption therapy, the number of CD10-negative premature granulocytes increased, indicating increased turnover of these cells in the circulation. Our observations suggest that selective granulocyte and monocyte adsorption is associated with modified peripheral blood leukocyte function favorable to patients with ulcerative colitis and possibly other autoimmune disorders which reflect leukocyte hyperactivity.


Assuntos
Celulose/análogos & derivados , Colite Ulcerativa/terapia , Leucaférese , Colite Ulcerativa/imunologia , Citocinas/metabolismo , Granulócitos , Humanos , Monócitos
14.
Liver ; 22(4): 321-9, 2002 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-12296966

RESUMO

BACKGROUND/AIMS: The aim of this study was to clarify the candidate cells for and the mechanism of superoxide anion (O2*-) release into the hepatic sinusoids during short-term exposure to ethanol. METHODS: The rat liver was perfused continuously with ethanol (a substrate for alcohol dehydrogenase) or tert-buthanol (not a substrate for alcohol dehydrogenase) for 20 min at a final concentration of 40 mM. In order to detect O2*- production, MCLA (2-methyl-6-[p-methoxyphenyl]-3,7-dihydroimidazo[1,2-a]pyrazin-3-one), a Cypridina luciferin analogue, was simultaneously infused and MCLA-enhanced chemiluminescence was measured. The effects of gadolinium chloride (GdCL3) (a suppressor of Kupffer cells (KCs)), staurosporine (ST) (an inhibitor of serine-threonine kinases, including protein kinase C), diphenyleneiodonium chloride (DPI) (an inhibitor of NADPH oxidase), ibuprofen (IB) (an inhibitor of cyclooxygenase) and 4-methylpyrazole (4MP) (an inhibitor of ethanol metabolism) on the ethanol-induced chemiluminescence were also evaluated. Sites where O2*- could be released were determined by histochemical detection of nitro blue tetrazolium reduction. RESULTS: Both ethanol and tert-buthanol rapidly caused O2*- release. GdCL3 suppressed the ethanol-induced O2*- release by 61%. Staurosporine and DPI, but neither IB nor 4-MP, also significantly inhibited the ethanol-induced O2*- release. In the histochemical examination, ethanol-stimulated liver showed blue formazan precipitate on both sinusoidal endothelial cells (SECs) and Kupffer cells (KCs), whereas the GdCl3-pretreated liver had the precipitate only on SECs. CONCLUSIONS: This study shows that ethanol itself stimulates both SECs and KCs to release O2*- via activation of NADPH oxidase probably involving protein kinase C (PKC).


Assuntos
Endotélio Vascular/metabolismo , Etanol/toxicidade , Células de Kupffer/metabolismo , Superóxidos/metabolismo , Animais , Endotélio Vascular/efeitos dos fármacos , Inibidores Enzimáticos/farmacologia , Etanol/administração & dosagem , Fomepizol , Gadolínio/farmacologia , Ibuprofeno/farmacologia , Imidazóis/metabolismo , Células de Kupffer/efeitos dos fármacos , Medições Luminescentes , Masculino , Nitroazul de Tetrazólio/metabolismo , Oniocompostos/farmacologia , Perfusão , Pirazinas/metabolismo , Pirazóis/farmacologia , Ratos , Ratos Wistar , Estaurosporina/farmacologia , terc-Butil Álcool/administração & dosagem , terc-Butil Álcool/farmacologia
15.
Dig Dis Sci ; 49(9): 1438-43, 2004 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-15481316

RESUMO

Active ulcerative colitis (UC) is associated with elevated granulocytes and monocytes/macrophages (GM) which show activation behavior and increased survival time. Further, fecal calprotectin (a stable neutrophil protein) level parallels intestinal inflammation and can predict UC relapse. Since GM are major sources of inflammatory cytokines and chemokines, they are suspected to have roles in the initiation and perpetuation of UC. Our objective was to investigated relationships between peripheral blood (PB) neutrophils, calprotectin, and UC disease activity. Full PB and calprotectin were determined in 69 healthy controls and 31 patients with UC, then 7 randomly selected patients received GM adsorptive apheresis (GMA) with Adacolumn, 10 sessions of 60-min duration each. Patients with UC had higher neutrophil counts (P < 0.001), but lower lymphocyte counts (P < 0.001) compared with controls. Further, fecal calprotectin levels showed a correlation with UC clinical activity index (CAI; P < 0.001) and mucosal inflammation (P < 0.001). Following GMA, there were falls in neutrophils (P < 0.02), CAI (P < 0.02) and calprotectin (P < 0.02). In conclusion, GM appear to contribute to intestinal inflammation and UC activity and reduction of these cells by GMA should benefit patients with active UC. Further, the correlations among calprotectin, UC activities, and PB neutrophils should serve as the basis for preemptive actions to control this disease.


Assuntos
Proteína C-Reativa/metabolismo , Colite Ulcerativa/diagnóstico , Enterite/diagnóstico , Complexo Antígeno L1 Leucocitário/metabolismo , Adolescente , Adulto , Estudos de Casos e Controles , Estudos de Coortes , Colite Ulcerativa/sangue , Enterite/sangue , Fezes/química , Feminino , Humanos , Mediadores da Inflamação/análise , Mediadores da Inflamação/metabolismo , Contagem de Leucócitos , Complexo Antígeno L1 Leucocitário/análise , Masculino , Pessoa de Meia-Idade , Ativação de Neutrófilo , Neutrófilos/fisiologia , Probabilidade , Prognóstico , Sensibilidade e Especificidade , Índice de Gravidade de Doença , Estatísticas não Paramétricas
16.
Glycobiology ; 12(9): 545-53, 2002 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-12213787

RESUMO

The accumulation of alpha1,2fucosylated antigens, such as Y (Fucalpha1,2Galbeta1,4 [Fucalpha1,3]GlcNAcbeta), Le(b) (Fucalpha1,2Galbeta1,3-[Fucalpha1,4]GlcNAcbeta), and H type 2 (Fucalpha1,2 Galbeta1,4GlcNAcbeta) occurs specifically within human colorectal tumor tissues and can be detected by an antifucosylated antigen antibody, such as the YB-2 antibody. In the present investigation, we found that the expression of these antigens bearing an alpha1,2-linked fucose correlated with the resistance of the tumor cells to anticancer treatments. Addition of an exogenous sugar acceptor for alpha1,2fucosyltransferase to the cell medium resulted in suppression of alpha1,2fucosylated antigen expression on the tumor cells and increased susceptibility to anticancer treatment. The increased susceptibility may be attributed to cancer cell-mediated priming by sugar acceptors for alpha1,2fucosyltransferase added to the medium.


Assuntos
Antígenos de Neoplasias/imunologia , Metabolismo dos Carboidratos , Neoplasias Colorretais/imunologia , Fucose/metabolismo , Fucosiltransferases/metabolismo , Antineoplásicos/uso terapêutico , Divisão Celular , Neoplasias Colorretais/tratamento farmacológico , Neoplasias Colorretais/patologia , Humanos , Células Tumorais Cultivadas
17.
Cancer ; 101(12): 2825-36, 2004 Dec 15.
Artigo em Inglês | MEDLINE | ID: mdl-15536618

RESUMO

BACKGROUND: Serum alpha1-acid glycoprotein (AGP), an acute-phase protein secreted by the liver, carries alpha(1,3)-fucosylated structures on its 5 highly branched, N-linked sugar chains. METHODS: Serum AGP levels in patients with various types of malignancies (n=214 patients) were measured using an enzyme-linked immunosorbent assay with anti-AGP antibody. To investigate glycoforms that differed in their degree of branching and extent of fucosylation, serum AGP samples were analyzed by crossed affinoimmunoelectrophoresis (CAIE) with concanavalin A, and Aleuria aurantia lectin (AAL), and anti-AGP antibody. RESULTS: A significant difference (P <0.001) in serum AGP levels was observed in preoperative patients compared with levels in the healthy control group, but the levels in individual patients did not reflect their clinical status. Conversely, it was found not only that the patterns of AGP glycoforms differed widely in the patient group compared with the healthy control group, but they also changed depending on each patient's clinical status. Furthermore, AGP glycoforms seemed to be appropriate markers of disease progression and prognosis according to follow-up studies of 45 patients during prolonged preoperative and postoperative periods. CONCLUSIONS: Patients with advanced malignancies who had AGP glycoforms that contained highly fucosylated triantennary and tetraantennary sugar chains for long periods after surgery were likely to have a poor prognosis. However, patients who had AGP glycoforms without such changes were expected to have a good prognosis.


Assuntos
Neoplasias/sangue , Orosomucoide/metabolismo , Biomarcadores Tumorais , Progressão da Doença , Ensaio de Imunoadsorção Enzimática , Feminino , Seguimentos , Fucose/metabolismo , Fucosiltransferases/sangue , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico
18.
Digestion ; 70(1): 36-44, 2004.
Artigo em Inglês | MEDLINE | ID: mdl-15297776

RESUMO

BACKGROUND/AIM: Active ulcerative colitis (UC) is often associated with increased peripheral granulocytes and monocytes/macrophages which show activation behavior and prolonged survival time. Further, mucosal granulocyte level parallels intestinal inflammation and can predict UC relapse. Accordingly, our aim was to see if adsorptive granulocyte/monocyte apheresis (GMA) can promote remission and spare steroid in patients with steroid-dependent (SD) UC. METHODS: 69 SD patients, at the time of relapse, were randomly assigned to groups I (n = 46) and II (n = 23). The mean dose of prednisolone (PSL) was 12 mg/day/patient, CAI (clinical activity index) 9.2 in both groups. Group I patients were given up to 11 GMA sessions over 10 weeks with Adacolumn; in group II, the mean dose of PSL was increased to 30 mg/day/patient. RESULTS: At week 12, 83% of group I and 65% of group II patients were in remission, CAI in group I was 1.7 (p < 0.001) and in group II, 2.5 (p < 0.001). Further, during the 12 weeks of treatment, the cumulative amount of PSL received per patient was 1,157 mg in group I and 1,938 mg in group II (p = 0.001). CONCLUSIONS: GMA appeared to be an effective adjunct to standard drug therapy of moderately severe UC by promoting remission and sparing steroids.


Assuntos
Anti-Inflamatórios/uso terapêutico , Remoção de Componentes Sanguíneos , Colite Ulcerativa/tratamento farmacológico , Colite Ulcerativa/imunologia , Granulócitos , Monócitos , Prednisolona/uso terapêutico , Adolescente , Corticosteroides/uso terapêutico , Adulto , Feminino , Humanos , Imunoterapia/métodos , Masculino , Pessoa de Meia-Idade , Índice de Gravidade de Doença , Resultado do Tratamento
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