A new dot immunoassay for simultaneous detection of celiac specific antibodies and IgA-deficiency.

Background: This study investigated whether a dot immunoassay (DIA) can provide simultaneous detection of anti-tissue transglutaminase (tTG), anti-deamidated gliadin (DG) and total IgA antibodies, as required in the work-up of celiac disease (CD) patients.

Methods: Celiac disease patients (n=111) consecutively diagnosed from 2001 to 2011 at the Children's Hospital and Institute of Immunology (Technical University Dresden) were tested for anti-tTG, anti-DG and total IgA by enzyme-linked immunosorbent assay (ELISA) and DIA retrospectively. Blood donors (n=45) and non-CD individuals with low IgA serum levels (n=8) were included as controls.

High sensitive detection of double-stranded DNA autoantibodies by a modified Crithidia luciliae immunofluorescence test.

Anti-double-stranded (ds)DNA antibodies are serological markers of systemic lupus erythematosus (SLE). Of all anti-dsDNA antibody detection methods, the Crithidia luciliae immunofluorescence test (CLIFT) is thought to have the highest specificity for SLE. However, the clinical application is hampered by the low diagnostic sensitivity.

Pretreatment with interferon-alpha2a modulates perioperative immunodysfunction in patients with renal cell carcinoma.

Introduction: Complex perioperative immunodysfunction occurs in patients with renal cell carcinoma undergoing surgery. Here, we report on the effect of preoperative treatment with interferon-alpha2a (IFN-alpha2a).

Materials And Methods: 30 patients with a renal tumour received preoperative IFN-alpha2a for 6 days beginning 1 week before nephrectomy, 30 did not.

Inhibition of alanyl-aminopeptidase on CD4+CD25+ regulatory T-cells enhances expression of FoxP3 and TGF-beta1 and ameliorates acute colitis in mice.

Inhibitors of alanyl-aminopeptidase e.g. phebestin increase the expression of transforming growth factor (TGF)-beta1 in mononuclear cells.

Platelet expression of CD40/CD40 ligand and its relation to inflammatory markers and adhesion molecules in patients with atrial fibrillation.

Recent studies suggest the importance of prothrombotic and proinflammatory cascades in vascular thrombus formation. However, the impact of platelet CD40 and CD40 ligand (CD40L) expression and its relation to inflammatory markers in atrial clot formation have not yet been determined. Therefore, we studied a total of 40 patients.

Perioperative immunomodulation with interleukin-2 in patients with renal cell carcinoma: results of a controlled phase II trial.

We conducted a non-randomised controlled phase II trial to investigate the role of preoperative administration of interleukin-2 (IL-2) in patients with renal cell carcinoma undergoing tumour nephrectomy. A total of 120 consecutive patients were allocated alternately to the two study groups: perioperative immunomodulation with IL-2 (IL-2 group; n=60) and perioperative immunomonitoring without immunomodulation (control group; n=60). Patients from the IL-2 group received four doses of 10 x 10(6) IU m(-2) twice daily subcutaneously a week before operation followed by a daily maintenance dose of 3 x 10(6) IU m(-2) subcutaneously until a day before the operation.

Assigning the phenotype of a natural regulatory T-cell to the human T-cell line, KARPAS-299.

The human CD30-positive anaplastic large (T-) cell lymphoma cell line, KARPAS-299 (DSM ACC31), was established from blast cells in the peripheral blood from a case of non-Hodgkin lymphoma in 1988. We describe the mRNA and surface expression in KARPAS-299 cells of a panel of markers highly restricted to human natural regulatory T-cells and associated with their suppressive activity, including FOXP3, CD25, IL-10, TGF-beta1, CD62L, and Lag-3. Results obtained from co-culturing human peripheral blood leukocytes with KARPAS-299 cells assigned a suppressive phenotype to the latter ones.

Effect of 2 anesthetic techniques on the postoperative proinflammatory and anti-inflammatory cytokine response and cellular immune function to minor surgery.

Study Objective: The aim of this study was to investigate the influence of 2 established anesthetic techniques: total intravenous anesthesia and balanced inhalation anesthesia (BAL) on the perioperative-induced changes of peripheral blood mononuclear cells (PBMCs), changes in lymphocyte subsets, and the balance of proinflammatory and anti-inflammatory cytokines.

Design: This is a prospective, randomized, clinical comparison study.

Settings: This study was set at a university hospital.

Effects of different anaesthetic agents on immune cell function in vitro.

Background And Objective: Anaesthesia may affect the regulatory balance of postoperative immune response. The aim of this study was to investigate the effects of different volatile and non-volatile anaesthetic agents and particularly of clinically used agent combinations on the proliferation capacity and cytokine production of immune cells.

Methods: Peripheral blood mononuclear cells from healthy donors were PHA-activated in the presence or absence of various concentrations of thiopental, propofol, fentanyl, sufentanil, sevoflurane, nitrous oxide and combinations of these anaesthetics.

Expression of cell surface antigens in diabetic patients and healthy controls after injury.

Aims: Due to the systemic character of Type 2 diabetes, cellular disturbances paralleled by an altered expression of various growth factors constitute the basis for impaired wound healing. Cell-surface antigens are altered in chronic wounds and may also have an effect on the persistance of diabetic foot lesions.

Methods: We investigated blood samples of diabetic patients with diabetic foot ulcers (n=21) in comparison with those from healthy control patients subsequent to an injury (n=9).

Pretreatment with interleukin-2 modulates perioperative immunodysfunction in patients with renal cell carcinoma.

Complex perioperative immunodysfunction occurs in patients with renal cell carcinoma undergoing nephrectomy. Here, the effect of pretreatment with IL-2 is addressed. Of 63 patients who underwent tumour nephrectomy, 26 patients received four doses of 10 Mio IE/m2 IL-2 b.

Synergistic action of DPIV and APN in the regulation of T cell function.

Inhibitors of the enzymatic activity of alanyl-aminopeptidases severely affect growth and typical functions of human peripheral T cells both in vitro and in vivo. The most prominent changes observed include the activation of cellular signal transduction pathways such as MAP kinases Erk1/2 or the Wnt-pathway, a decrease of production and release of "pro-inflammatory" cytokines (IL-2, IL-12) and, most importantly, an induction of expression and release of the immunosuppressive cytokine, TGF-beta1. Similar effects on T cell proliferation and function have been observed in response to inhibition of DPIV, which is strongly suggestive of a functional synergism of APN and DPIV.

Pretreatment with interleukin-2 modulates peri-operative immuno-dysfunction in patients with renal cell carcinoma.

Objective: Complex peri-operative immuno-dysfunction occurs in patients with renal cell carcinoma undergoing nephrectomy. Here, the effect of pretreatment with interleukin-2 (IL-2) is addressed.

Methods: Of 63 patients who underwent tumor nephrectomy, 26 patients received 4 doses of 10 Mio IE/m(2) IL-2 b.

Complex perioperative immuno-dysfunction in patients with renal cell carcinoma.

Purpose: Patients with renal cell carcinoma have an impaired function of the immune system, which is the basis for different approaches of immunotherapy. We address perioperative changes of several parameters of the immune system in these patients.

Materials And Methods: Parameters of cellular and humoral immunity, including differential blood count, T cell markers CD2, 3, 4 and 8, B cell markers CD19 and 20, monocyte markers CD13 and 14, natural killer cell marker CD16, activation markers CD25, CD26 and HLA-DR, and cytokines interleukin-1 (IL-1) receptor antagonist, IL-2, soluble IL-2 receptor, IL-6, IL-10 and transforming growth factor-beta, were measured in the venous blood of patients who underwent renal surgery extracorporeal shock wave lithotripsy (ESWL, Dornier Medical Systems, Inc.

Increased expression of P-selectin in patients with chronic atrial fibrillation.

Previous studies have shown that platelets are activated during atrial fibrillation (AF). However, prophylactic therapy with aspirin is not associated with a reduction of thromboembolic complications in patients with AF. Stimulation of platelet thrombin and ADP receptors causes a release of P-selectin, which is not affected by aspirin.

MRP8/MRP14, CD11b and HLA-DR expression of alveolar macrophages in pneumonia.

Activation of alveolar macrophages is characterised by specific alterations to the expression pattern of surface markers under certain pathological conditions. MRP8/MRP14 and CD11b are involved in the regulation of macrophage migration and adhesion. HLA-DR regulates the antigen presentation by alveolar macrophages.

Rapid mitogen-induced aminopeptidase N surface expression in human T cells is dominated by mechanisms independent of de novo protein biosynthesis.

The membrane bound metalloprotease aminopeptidase N (APN, CD13, EC 3.4.11.

The main neutral aminopeptidase activity of human lymphoid tumour cell lines does not originate from the aminopeptidase N-(APN; CD13) gene.

Lymphocytes and related cell lines are predominantly CD13-negative, however, there are reports describing neutral aminopeptidase activity in or on these cells. The aim of this study was to answer the question, whether this activity originates from APN-gene expression. The total cellular activities (Ala-pNA hydrolysis) of lymphoid cell lines are up to 15 times higher than that of normal lymphocytes.

gamma-Glutamyl transpeptidase-cellular expression in populations of normal human mononuclear cells and patients suffering from leukemias.

The expression of the ectoenzyme gamma-glutamyl transpeptidase (EC2.3.2.

Thiol-proteindisulfide-oxidoreductase (proteindisulfide isomerase): a new plasma membrane constituent of mature human B lymphocytes.

The thiol-proteindisulfide-oxidoreductase (TPO, EC 1.8.4.

[Biofreezer BF 80--a universally employed apparatus in preservation at very low temperatures].

A computer-controlled freezing apparatus is described which uses liquid nitrogen (LN2) as coolant. The freezing equipment BF 80 consists of a big cryochamber (volume 24 l), a LN2 tank and a computer for the control of the freezing procedure. The biofreezer functions in the range from 40 to -180 degrees C.

[Determination of cellular and humoral parameters of fatty liver].

Cellular and humoral immunological parameters were examined in mononuclear cells from peripheral blood of patients with alcoholic and nonalcoholic steatosis hepatis. The ratio of T4 and T8 positive lymphocytes and the number of monocytes of these patients were in the normal range. The percentage of NK-cells, B-lymphocytes and DR-antigen-positive cells was increased.