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Biomedical subjects

R Patterson

Publications and source records attributed to R Patterson.

At least 451 records · Page 25Linked to original sources
PubMed1981

Further studies on the safety of polymerized antigens for immunotherapy.

Six patients receiving immunotherapy with standard aqueous extracts for the treatment of atopic disease were selected from the patient population of Northwestern University Allergy Clinics for continued immunotherapy with polymerized antigens. These six patients could not tolerate quantities of conventional aqueous extracts considered maintenance doses because of immediate-type local or systemic allergic reactions or both to immunotherapy. These six patients were treated with separate preparations of polymerized ragweed (PRW) and polymerized grass (PG), and each of the six patients was rapidly advanced to previously unobtainable maintenance doses of PRW and PG without local or systemic reactions. Treatment with other aeroallergen standard extracts was continued to maintenance dosage without further systemic reactions. In patients highly sensitive to ragweed and grass aqueous extracts, the substitution of these extracts with PRW and PG allows these patients to receive therapeutic immunotherapy injections with decreased risk of immediate-type local and systemic reactions.

Adult↗
PubMed1981

Inhibition of immunoglobulin E-mediated, antigen-induced monkey asthma and skin reactions by 5, 8, 11, 14-eicosatetraynoic acid.

The immediate-type, IgE-mediated rhesus monkey model of asthma due to aerosol challenge with ascaris has been developed to the status of an analytic system for agents capable of inhibiting the antigen-induced airway response. Two antigen-challenge systems have been developed. The standard ascaris challenge uses a dose of antigen that will induce an airway response in all reactive animals. In the threshold antigen-challenge system, the threshold dose of antigen that will induce an airway response is determined and is relatively constant for the individual animal. Both of these types of response were inhibited by 5,8,11,14-eicosatetraynoic acid (ETYA). This action may be through the inhibition of the lipoxygenase and cyclooxygenase metabolic pathways of arachidonic acid and possibly through inhibition of production of slow-reacting substance. ETYA also inhibits cutaneous immediate-type reactivity to ascaris antigen in a dose-response relationship. This may be the result of inhibition of mast cell histamine release or the inhibition of production of other vasoactive mediators. An alternative explanation for the action of ETYA in the airway and skin responses is that ETYA may act as an end-organ antagonist to released bioactive mediators. ETYA is the first agent, other than beta agonists or cromolyn, that we have been able to demonstrate as clearly having an inhibitory action on the rhesus monkey model of asthma.

5,8,11,14-Eicosatetraynoic Acid↗
PubMed1981

Polymerized tree pollen antigens.

Aqueous extracts of tree pollen were partially purified and polymerized with methods previously established for preparation of ragweed and grass polymers. The polymerized tree preparations were antigenic as demonstrated by ability to elicit immediate-type skin reactivity in humans and to induce an immune response in rabbits. The polymerized tree antigen was 100- to 10,000-fold less skin reactive than monomer tree antigen in tree pollen-sensitive patients but both preparations had similar antigenicity in rabbits. These results demonstrate that polymerized tree antigens can be prepared and should have the therapeutic potential already demonstrated for polymerized ragweed preparations.

Animals↗
PubMed1981

Factitious Hymenoptera allergic emergency: a report of a new variant of Munchausen's syndrome.

We report of the case of a young woman with three hospitalizations and six emergency room visits for treatment of bronchospasm and angioedema first thought to be the result of Hymenoptera venom allergic reactions. Because several features of her illness were not consistent with the usual course of Hymenoptera anaphylaxis and because of a known history of anaphylactic-type reactions following aspirin ingestion, a presumptive diagnosis of factitious anaphylaxis was considered, the medical staff was alerted to evaluate this possibility, and the diagnosis was established. Serologic testing supported the diagnosis. This variant of Munchausen's syndrome is a third type described as an allergic emergency. The others are peanut anaphylaxis and self-induced laryngeal stridor.

Adult↗
PubMed1981

An agent that releases basophil and mast cell histamine but blocks cyclooxygenase and lipoxygenase metabolism of arachidonic acid inhibits immunoglobulin E-mediated asthma in rhesus monkeys.

An inhibitor of the lipoxygenase and cyclooxygenase pathways of arachidonic acid metabolism, BW755C, was evaluated with the rhesus monkey model of IgE-mediated asthma. BW755C was found to release histamine from human and rhesus peripheral blood leukocytes and rhesus bronchial lavage cells. BW755C did not induce a rhesus airway response but inhibited antigen-induced airway changes in pulmonary resistance and dynamic compliance. The results demonstrated that a lipoxygenase and cyclooxygenase inhibitor that is a histamine releaser may inhibit some pulmonary function abnormalities of an IgE-mediated response and suggested that histamine has a minor role as a stimulator of airway reaction in this model. This was supported by studies showing failure of the histamine H1 blocker pyrilamine maleate to inhibit the antigen-induced airway response. Although BW755C has been shown to be a lipoxygenase and cyclooxygenase inhibitor, it is not established that the inhibiting action of this agent on an antigen-induced airway response is due to an effect on arachidonate metabolism in the lung.

4,5-Dihydro-1-(3-(trifluoromethyl)phenyl)-1H-pyraz↗
PubMed1981

Allergic bronchopulmonary aspergillosis in corticosteroid-dependent asthmatics.

Forty-two corticosteroid-dependent asthmatics were studied to determine whether their underlying disease might be allergic bronchopulmonary aspergillosis (ABPA). The clinical and laboratory characteristics studied included age, sex, atopic status, mean corticosteroid doses, skin tests to Aspergillus fumigatus (Af), precipitins to Af, total serum IgE, and chest roentgenograms. Twelve patients had four or more of the seven primary criteria used and were considered as the ABPA suspect group. Further studies identified three patients who were considered to have definite ABPA and an additional three patients with probable ABPA. This study suggests that previously undiagnosed ABPA can be detected in populations of corticosteroid dependent asthmatics. Corticosteroid therapy may mask ABPA, and serial evaluations of these patients may be of value in detecting additional cases of the disease.

Adolescent↗
PubMed1981

Hypersensitivity lung disease presumptively due to Cephalosporium in homes contaminated by sewage flooding or by humidifier water.

Two cases of hypersensitivity lung disease apparently caused by home environment contamination with Cephalosporium have been identified. In one case repeated flooding of the home with sewer water appeared to be important in maintaining an environment contaminated with Cephalosporium, and in the other case a contaminated humidifier appeared to be the source. Both patients had chronic respiratory symptoms remitting during absence from the home, and both presented problems in diagnosis. In both cases cultures of the home environment or humidifier and serum antibody studies indicated Cephalosporium as the antigenic source responsible for the airway disease. An inhalation challenge in one case was positive, adding further evidence for Cephalosporium as the antigenic source and etiologic agent. In both cases complete remission followed moving from the home. Cephalosporium is reported as an apparent antigenic source for home contamination resulting in significant chronic pulmonary morbidity.

Acremonium↗
PubMed1981

Clinical and immunologic correlations in trimellitic anhydride airway syndromes.

Twenty workers exposed to trimellitic anhydride (TMA) powder were evaluated to correlate respiratory symptoms with total antibody activity against trimellityl human serum albumin (TM-HSA). Further, specific IgG, IgA, and IgE against TM-HSA were compared to total specific antibody levels against that antigen. The workers were categorized clinically as having either the late respiratory systemic syndrome (LRSS), immediate rhinitis and asthma, or an irritant reaction. There were no histories compatible with the pulmonary disease--anemia syndrome. Total antibody and IgG antibody activity to TM-HSA correlated well (R8 = 0.75, p less than 0.05). Total antibody activity was found in almost all TMA-exposed workers, it did not discriminate the symptomatic workers from asymptomatic workers as well as did the IgG or total antibody determinations. IgE antibody activity against TM-HSA was elevated in one worker with immediate-type asthma. Previous studies correlated symptoms caused by TMA inhalation with antibody activity. This study indicates that clinical assessment plus total antibody determination or IgG antibody and IgE antibody determination should establish a means of diagnosis of the presence or absence of immunologic respiratory disease caused by TMA powder.

Adult↗
PubMed1981

Chronic pruritic dermatitis in asthmatic monkeys: a subhuman primate analogue of atopic dermatitis?

In a group of adult normal rhesus monkeys and monkeys with IgE-mediated asthma observed over a period of 15 years, 2 of the latter group were found to have chronic, generalized pruritus and dermatitis. The skin lesions were recurrent and located on the flexural surfaces of the forearms leading to the thickened, scaling, lichenified dermatitis in that area in the skin of 1 monkey. The pruritus and skin lesions subsided following therapy with depot methylprednisolone but recurred after this therapy was discontinued. Both animals had recurrent severe cutaneous infections in excoriated lesions following scratching without infections in other organs. The cutaneous infections responded to penicillin therapy but recurred with scratching. No deficiencies in immunoglobulin levels, or lymphocyte responses to phytohemagglutinin were found in these 2 monkeys. The 2 animals differed from normal animals by their high titers of immediate skin reactivity to ascaris antigen, persistent and severe asthmatic responses to ascaris antigen, high IgG antibody levels to ascaris antigen but all of the latter findings were also present in asthmatic monkeys without dermatitis. Cutaneous biopsies of lesions were nonspecific but provided no evidence for other explanations for the dermatitis which appears to be an analogue of human atopic dermatitis.

Adrenal Cortex Hormones↗
PubMed1981

Human antibodies against trimellityl proteins: comparison of specificities of IgG, IgA and IgE classes.

The specificities of antibodies of different Ig classes against trimellityl (TM)-human serum albumin were examined by a radioimmunoassay inhibition technique. The antisera were from workers exposed to trimellitic anhydride who had 4 differing respiratory diseases. The studies demonstrated similarities between reactivities of antibodies of different Ig classes in these workers in that inhibition of antibody to TM-HSA required markedly less TM-HSA on a molar basis than TM-ovalbumin (OA) or sodium trimellitate (NaTM), the hapten for the trimellityl group. The results appears best explained by formation of new antigenic determinants on altered HSA molecules with the TM group forming a component of some of the new antigenic determinants. NaTM in high concentration could not completely inhibit the IgG antibodies of 2 sera suggesting either very low affinity for the hapten or that some of the antibodies might possibly be directed against new antigenic determinants formed from the reaction of TMA with HSA but that the TM group might not be a part of the antigenic specificity. The results of some studies also suggested that there were similar antigenic specificities on TM-HSA and TM-OA but of lesser concentration or lower affinity on the latter molecules. Passive transfer studies using a serum containing IgE antibodies against TM-HSA demonstrated that these human IgE antibodies will passively sensitize rhesus monkey skin. Neutralization of the cutaneous IgE antibodies occurred with TM-HSA but not with a great molar excess of NaTM in analogy with the in vitro studies.

Antibodies↗
PubMed1981

Antigens of aspergillus fumigatus. 1. Purification of a cytoplasmic antigen reactive with sera of patients with aspergillus-related disease.

An antigen has been purified from the mycelial cell sap of Aspergillus fumigatus (strain 507). The same component appears to be present in the extracellular phase (culture filtrate) in a partially degraded form. The cell sap protein has a structure composed of four polypeptides of 45,000 daltons linked through disulphide bonds. The isoelectric point (5.2-5.6) and carbohydrate content (12.5% neutral hexose) indicate that this protein is an acidic glycoprotein. It shows reactions with 75% of sera from patients with aspergilloma and allergic bronchopulmonary aspergillosis and is not reactive with sera from normal individuals of patients with other fungal diseases. It also appears to be a component of other A. fumigatus strains.

Antigens, Fungal↗
PubMed1981

Cardiovascular stress of crutch walking.

The cardiovascular (CV) stress of crutch walking was studied in 8 normal subjects ambulating with under arm crutches at 30, 40, 50, 60, 70 and 80m.min-1 on the level, at 40 and 60m.min-1 up a 5% grade, and climbing stairs at the rate of 16 and 24 stairs/min. A progressive exercise stress test was performed on each subject using a hand-cranked bicycle ergometer for the upper extremities and treadmill for the lower extremities. Heart rates (HR) were significantly higher than in normal walking at equivalent O2 uptake (VO2) levels. The HR slope versus VO2 for each crutching activity was similar to that obtained for the upper extremities stress test. This suggests that crutching acts as an upper extremity activity in terms of CV stress. Using the ventilatory equivalent (VE/(VO2), the estimated anaerobic threshold point started at 60m.min-1 for level crutching. It was estimated that a subject with a pulse rate limit of 140bpm could either crutch at 60m.min-1 (2.2mi.hr-1) or run at 134m.min-1 (5mi.hr-1).

Adult↗
PubMed1980

A rapid method for assessment of a macrophage chemotactant produced by SaD2 fibrosarcoma cells in vitro.

A new rapid method for assessing murine macrophage chemotaxis was developed using peritoneal exudate cells labeled with [5,6-3H]uridine in modified Boyden chambers with double polycarbonate filters. The method gave positive results with endotoxin-treated mouse serum and with serum-free culture supernatant of the DBA/2 SaD2 fibrosarcoma. These results correlated with results obtained with conventional microscopic assessment of chemotaxis. Using this method, the SaD2 supernatant was shown to be chemotactic rather than chemokinetic.

Animals↗