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PubMed1994

Specific western blot bands are associated with initial CD4+ lymphocyte counts in human immunodeficiency virus seroconverters. The Navy HIV Working Group.

The Western blot is the most widely used confirmatory test for determining human immunodeficiency virus (HIV) seropositivity. Specific bands in the Western blot indicate antibody responses to various portions of HIV or its precursors, and each is assigned a score from 0 to 3+. While the precise role of humoral antibody responses has not been fully established, specific antibody responses might influence the course of HIV infection. This study investigated the association between antibody reactivity to nine principal Western blot bands and initial CD4+ counts among 877 Navy and Marine Corps personnel during 1988 to 1991. Multiple regression was used to evaluate the strength and significance of the associations and to adjust for age and estimated duration of infection. Strong antibody responses to the p24 core (P < 0.05), p53 reverse transcriptase (P < 0.005), and p55 core precursor (P < 0.0001) antigens were associated with higher initial CD4+ counts, with 33 to 48 additional cells/mm3 associated with each unit increase in the Western blot score, according to a multiple regression analysis which controlled for age and duration of infection (maximum 24 months). By contrast, antibodies to the gp41 transmembrane antigen (P < 0.0001) were associated with lower initial CD4+ counts. Each unit increase in the gp41 band was associated with 76 fewer CD4+ cells/mm3. A negative association was also observed for the gp160 envelope precursor antigen, with each unit increase in reactivity associated with 51 fewer CD4+ cells, although this association was not statistically significant (P = 0.09).(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed1993

[Isolation of HIV-1 and its correlation with various HIV-markers in Japan].

In Japan, the isolation rate of HIV-1 has increased in recent years, and has become as high as 36.7% in 1991. In order to evaluate the onset of AIDS, we have collected various HIV markers, which were obtained from surveillance committee of Natural History. These data include a total of 1991 specimens (actual number 556 individuals) from Japanese hemophiliacs and non-hemophiliacs since 1985. The data analysed CDC stage, leucocyte counts, lymphocyte counts, CD4+ cell counts, CD8+ cell counts, CD4/CD8 ratio and immunoglobulins (IgA, IgG, IgM). The results indicate that in HIV-isolation positive patients, leucocyte counts, lymphocyte counts, CD4+ cell counts, CD8+ cell counts and CD4/CD8 ratio were significantly lower than those of HIV-isolation negative patients in both hemophiliacs and non-hemophiliacs. IgA value of the positive patients was significantly higher than that of the negative patients, while the IgM value showed converse results to the IgA, in hemophiliacs only. In general, the difference of each HIV marker in non-hemophiliacs was more conspicuous than those in hemophiliacs.

Acquired Immunodeficiency Syndrome↗
PubMed1988

Effect of continuous oral diethylcarbamazine treatment on lymphocyte counts of feline leukemia virus-infected cats.

In previous studies, administration of diethylcarbamazine (DEC) resulted in increased serum antibody titers to feline oncornavirus-associated cell membrane antigen (FOCMA) in cats infected with feline leukemia virus (FeLV). FeLV infection of cats frequently results in immunosuppression associated with lymphopenia. The present investigation demonstrated that chronic administration of DEC prevented or delayed severe lymphopenia in two FeLV-infected offspring of an FeLV-infected queen as compared to two untreated littermates.

Animals↗
PubMed1993

Studies on lymphocyte characteristics in patients with homozygous alpha 1-proteinase inhibitor deficiency during substitution therapy.

Alpha 1-proteinase inhibitor (alpha 1-PI) has been demonstrated to suppress mitogen-induced lymphocyte response in vitro. To evaluate the effect of intravenous application of human alpha 1-PI (Prolastin HS) on cellular immunity, we determined total lymphocyte count, lymphocyte subsets and lymphocyte response to concanavalin A, before and 24 h after infusion of 60 mg.kg-1 body weight alpha 1-PI in eight patients with homozygous alpha 1-PI deficiency (PiZ phenotype). The results were compared with two blood samples from seven healthy controls. After infusion, serum alpha 1-PI levels were increased from 0.98 +/- 0.24 to 2.68 +/- 0.51 g.l-1. No significant differences were found for total lymphocyte count, lymphocyte subsets and lymphocyte response between both groups in both samples. Maximum 3H-thymidine incorporation before and after infusion showed no significant difference; the same was true for the two control samples. However, additional incubation in vitro with alpha 1-PI 5 g.l-1 led to a significant (p < 0.03) decrease of lymphocyte proliferation in samples after infusion. Our data indicate that alpha 1-PI substitution therapy does not lead to a major suppression of lymphocyte response to concanavalin A in PiZ individuals in vivo, although a suppressive effect was found after additional in vitro incubation with alpha 1-PI.

Homozygote↗
PubMed2002

Skin rubdown with a dry towel activates natural killer cells in bedridden old patients.

BACKGROUND: Skin rubdown using a dry towel to scrub the whole body is a traditional procedure. Because massage therapy is effective in improving cellular immunity, skin rubdown may also have the similar effects. MATERIAL/METHODS: Sixteen bedridden old patients, who had suffered a cerebral stroke, were studied. Skin rubdown for about 10 minutes was added for 10 days. Blood was collected at noon on the day before skin rubdown, 5 and 10 days after initiation and 5 days after completion, and the neutrophil count, lymphocyte count, serum gamma-globulin and C-reactive protein (CRP) levels and natural killer cell activity were measured. In 9 of these 16 patients, B, T, CD4 and CD8 lymphocyte counts were additionally measured on the same days. RESULTS: There were no significant changes in the time course of the lymphocyte count, gamma-globulin or CRP levels. The neutrophil count increased 10 days after initiation of the skin rubdown, and natural killer cell activity increased 5 and 10 days after initiation, and returned to the baseline level 5 days after completion. Although there were no changes in the time course of the B, T, CD4 and CD8 lymphocyte counts, the CD4/CD8 ratio showed an increase 5 days after initiation and completion. CONCLUSIONS: Skin rubdown activates natural killer cells, which may be attributed to the effect of certain mediators released from the T lymphocytes and/or the stimulated effect on the sympathetic nerves. This technique may be used to reduce a variety of complications caused by the decreased immunity observed in bedridden old patients.

Aged↗
PubMed1992

Influence of preoperative treatment and surgical operation on immune function of patients with esophageal carcinoma.

Multiple immunological parameters, including total lymphocyte count, lymphocyte subpopulations (CD2+, CD19+, CD3+, CD4+ and CD8+), phytohemagglutinin (PHA) response, and natural killer (NK) activity, were measured in 66 patients with previously untreated esophageal carcinoma. The influence of preoperative treatment and/or surgical operation on the immune function were evaluated in 40 patients. The PHA response and NK activity of the patients with esophageal carcinoma were 229 +/- 103 S.I.% and 18.5 +/- 11.9% lysis, respectively, and were significantly depressed as compared with the control. The CD4+/CD8+ ratio, PHA response, and NK activity in stage IV were also significantly depressed compared to that in stages I-III. Preoperative treatment induced significant reductions in the total lymphocyte count (1,994 +/- 644 to 670 +/- 274/mm3), PHA response (219 +/- 77 to 159 +/- 59 S.I.%), and NK activity (19.7 +/- 13.2 to 11.1 +/- 10.3% lysis) as well as a significant gradual decrease in the CD4+/CD8+ ratio (2.09 +/- 1.42 to 0.69 +/- 0.48), while the surgical operation significantly influenced only the total lymphocyte count. This study demonstrates that preoperative treatment induces a more pronounced influence on the immune function than surgical operation alone, in patients with esophageal carcinoma in which the immune function is disturbed prior to these treatments.

Adult↗
PubMed1988

[T-cell subpopulation of bronchoalveolar lavage fluid in patients of sarcoidosis and hypersensitivity pneumonitis--2 cases report].

Diffuse interstitial lung diseases include more than 100 varieties. Even for a chest specialist differential diagnosis is difficult; accurate diagnosis without transbronchial lung biopsy or open lung biopsy was particularly hard. Bronchoalveolar Lavage (BAL) is a new diagnostic procedure which is relatively safe and repeatable. It takes about 30 minutes more, during the usual bronchoscopic examination, to obtain fluid and cells from the lower respiratory tract. These specimens aid differential diagnosis and an understanding of pathogenesis in the early stage of diffuse interstitial lung disease. Two cases are reported. One was sarcoidosis, as proved by mediastinoscopic lymph node biopsy; the other one was hypersensitivity pneumonitis by clinical impression. Both patients received bronchoscopic examination with bronchoalveolar lavage. The bronchoalveolar lavage fluid showed an increase in total cell count, lymphocyte count and lymphocyte percentage. In sarcoidosis, the main T-lymphocyte subpopulation was helper T-lymphocytes while, in hypersensitivity pneumonitis, the main T-lymphocyte subpopulation was suppressor T-lymphocytes. We concluded that, if the patients of diffuse interstitial lung diseases had increased lymphocyte count and percentage in bronchoalveolar Lavage fluid, examination of the lymphocyte subpopulation would help differential diagnosis.

Adult↗
PubMed2001

The effect of three different doses of sodium pentosan polysulphate on haematological and haemostatic variables in adult horses.

OBJECTIVE: To evaluate the effects of three different doses of sodium pentosan polysulphate (PPS) on haematological and haemostatic variables in adult horses. DESIGN: Eight adult standardbred horses were used. All horses received a single injection of 0, 3, 6, and 10 mg/kg of PPS at the beginning of each treatment week for 4 weeks so that by the end of the study all horses had received all four doses of PPS. Blood samples were collected at 0, 1, 2, 3, 4, 6, 8, 12, 24, 48, and 168 h after each weekly injection of PPS. Variables measured were packed cell volume, haemoglobin, red blood cell count, mean corpuscular volume, mean corpuscular haemoglobin, mean corpuscular haemoglobin concentration, platelet count, white cell count, neutrophil count, lymphocyte count, eosinophil count, monocyte count, serum protein, fibrinogen, prothrombin time, and activated partial thromboplastin time (PTT). Data were analysed using an ANOVA. Significance was set at P < 0.05. RESULTS: There was a dose-dependent increase in PTT. A significant increase in PTT occurrred in all treatment groups when compared to horses receiving 0 mg/kg in which there was no change over time. The PTT values all returned to baseline by 48 h after treatment. The mean neutrophil count was higher 3 h after treatment when compared to time 0. Horses receiving 3 mg/kg of PPS had a higher lymphocyte count 4 h after injection, and those receiving 6 and 10 mg/kg had higher counts at 3,4,6 and 8 h after injection when compared to time 0. At 8 h after injection horses receiving 6 and 10 mg PPS had higher lymphocyte counts than horses not receiving PPS. CONCLUSIONS: PPS causes a dose-dependent prolongation of PTT in horses. At the dose rates currently recommended for treatment of joint problems in horses this increase was small and remained elevated from baseline for up to 24 h. Based on these findings doses of PPS up to 3 mg/kg should not be administered to horses within 24 h of high stress activities or where physical injury may occur.

Animals↗
PubMedDate not supplied

[Is cell-mediated immunity affected by laparoscopic cholecystectomy?].

It is well known that surgery significantly decreases cell-mediated immunity. Laparoscopic cholecystectomy is a so-called minimally invasive surgical procedure, and on the basis of this consideration we investigated whether and how the immune system is modified in patients after laparoscopic cholecystectomy compared to those undergoing open cholecystectomy. Immune activity (neutrophils, total lymphocyte count, lymphocyte subpopulations, multiple skin tests) was evaluated in 82 patients on postoperative day 1 and on postoperative days 1, 3 and 6. Forty-two patients underwent open cholecystectomy and 40 laparoscopic cholecystectomy. On postoperative day 1 patients treated by open cholecystectomy showed a significant increase (P < 0.05) in plasma neutrophils, whereas this parameter was unchanged in patients undergoing laparoscopic cholecystectomy. Skin tests revealed a hypo- or anergic response in the majority of patients (81.8%) undergoing open surgery compared to those treated laparoscopically (10.5%). Total lymphocyte count and lymphocyte subpopulations were normal in the two groups. Four cases of respiratory tract infection (4.8%) were detected after open cholecystectomy. Laparoscopic cholecystectomy substantially reduces postoperative pain and hospitalisation, promotes an earlier recovery and return to normal activity and is not associated with postoperative immunosuppression, with a more positive postoperative morbidity profile compared to open surgery.

Adult↗
PubMed1993

Granulocyte-colony-stimulating factor induces increased serum levels of soluble interleukin 2 receptors preceding engraftment in autologous bone marrow transplantation.

The serum levels of soluble interleukin 2 receptors (sIL-2R) were determined in 19 patients who received high-dose chemotherapy and an autologous or syngeneic bone marrow transplant (BMT) for treatment of Hodgkin's disease (n = 18) or non-Hodgkin's lymphoma (n = 1). Twelve patients received granulocyte colony-stimulating factor (G-CSF) from day 0 or day +1 after autologous BMT until the white blood cell count had been stable for 9 d above 1 x 10(9)/l, the remaining seven patients did not receive growth factors. In all G-CSF-treated patients the sIL-2R levels increased steadily in the early post-transplant course, even in the absence of infection. This increase was statistically significant 2-4 d prior to the appearance of leucocytes in the peripheral blood (median 340 pM versus median 256 pM immediately after BMT, P < 0.025) and peaked with the appearance of first peripheral blood leucocytes (median 536 pM, P < 0.001). Cessation of G-CSF administration resulted in a decline of sIL-2R levels. In contrast, five of seven patients without G-CSF treatment did not exhibit an sIL-2R increase before or at the time of engraftment. Infection was associated with a rise of sIL-2R levels. A correlation between sIL-2R levels and total leucocyte count, lymphocyte count, or CD25+ lymphocyte count was not evident. These data suggest that after autologous BMT G-CSF induces increased sIL-2R levels, which occur independent of lymphocyte activation. This may be compatible with involvement of immature bone marrow cells in G-CSF-induced sIL-2R release.

Adolescent↗
PubMedDate not supplied

Effects of carbon dioxide inhalation on hematology, coagulation, and serum clinical chemistry values in rats.

Blood samples from adult male and female Charles River Crl:CD (SD) BR rats were collected at weekly intervals for 4 wk to evaluate the effects of inhalation of an anesthetic dose of carbon dioxide (CO2) or of a carbon dioxide-oxygen mixture (CO2/O2) on hematology, coagulation, and serum biochemistry values. During the first 3 wk of the study, rats were assigned to 1 of 3 groups and were bled from the orbital sinus once weekly. Prior to the blood collection, rats in group 1 were exposed to room air only, rats in group 2 received CO2/O2 (approximately 66%:34% CO2:O2) by inhalation, and rats in group 3 received 100% CO2 by inhalation. In the rats exposed to CO2/O2 or CO2, leukocyte counts, lymphocyte counts, and glucose values were higher, and aspartate aminotransferase, creatine kinase, and calcium values were lower compared with those of rats exposed to room air only. Rats exposed to 100% CO2 had slightly (but statistically significant) lower mean corpuscular hemoglobin concentration when compared with rats exposed only to room air. During week 4, all rats were reassigned to 1 of 2 groups and were bled terminally via closed cardiac puncture following exposure to either CO2/O2 or CO2. Increased lymphocyte counts (males only) and glucose and chloride concentrations were noted for rats exposed to CO2/O2 compared with those exposed to CO2. These alterations reiterate the importance of comparing clinical pathology values to those of concurrent control groups that have experienced blood collection under identical conditions in order to avoid potential errors in the interpretation of data.

Administration, Inhalation↗
PubMedDate not supplied

Growth hormone (GH) and the immune system: impaired phagocytic function in children with idiopathic GH deficiency is corrected by treatment with biosynthetic GH.

Thirty-seven prepubertal children evaluated for severe growth retardation were studied by assessment of total granulocyte, monocyte and lymphocyte count, lymphocyte subsets CD3+, CD3+Dr+, CD3+Dr-, CD4+, CD8+, CD8+CD57+, CD8+CD57-, CD16+, CD20+ and CD23+, serum immunoglobulin concentrations, and phagocytic activity of circulating neutrophils and monocytes (by a flow cytometric assay). Idiopathic GH deficiency was diagnosed in 21 of 37 patients; the remaining 16 healthy subjects served as controls. Fourteen patients received biosynthetic GH (rhGH), and their immune parameters were assessed at baseline and after 6 months of therapy. Phagocytic function mediated by both polymorphonuclears and monocytes was significantly impaired in GH-deficient subjects compared to controls (p < 0.003 for neutrophils, p < 0.007 for monocytes), while a significant increase of phagocytic activity was obtained during long-term rhGH replacement therapy (p < 0.02 for neutrophils, p < 0.001 for monocytes), thus suggesting that GH may affect the functional activity of circulating phagocyte cells. No significant differences were found in total granulocyte, monocyte and lymphocyte counts, T- and B-lymphocyte subsets and immunoglobulin levels, between GH-deficient patients and controls, and between values observed before and during rhGH substitution treatment.

Adolescent↗