The guinea pig is much like humans in the cells and mediators involved in immediate hypersensitivity reactions. However, the major anaphylactic antibody in this species is IgG1, not IgE. Recently, we have been successful in producing IgE antibody in guinea pigs. The current study examined whether guinea pig IgE antibody could mediate pulmonary smooth muscle contraction. IgE antibody to picryl a...

background: the relaxant and anticholinergic (functional antagonism) effects, histamine h 1 inhibitory effect, and calcium channel blocking effect of nigella sativa have been demonstrated on guinea pig tracheal chains.  several therapeutic effects including anti-asthma and dyspnea have also been ascribed to the seeds of nigella sativa.   objective: to evaluate the antitussive effect of this pla...

Liver cancer is one of the most common solid tumors worldwide. Extensive research was carried out to document the powerful properties of Nigella sativa (N. sativa) as an anti-tumor, bactericide, anticestode, antinematode, anti-inflammatory, analgesic, anti-diabetic and diuretic with many other uses. Little is known about the Nigella sativa anti-tumor property in liver cancers, thus our current ...

1. The polysaccharide fractions from each of five yeast-like fungi produce rapid, fatal anaphylactic shock in guinea pigs passively sensitized with antiserum from rabbits immunized against the killed organisms. 2. Cross-anaphylactic reactions with heterologous polysaccharide fractions are frequent. They parallel closely the cross-precipitin reactions, thus adding evidence in favor of the identi...

As initial steps in studying the cell-free biosynthesis of guinea pig pancreas ribonuclease, we have developed an ion exchange procedure for its isolation and have analyzed the various subcellular fractions with this technique. This cytological approach was independently applied in studies on the ribonuclease of mouse pancreas (1). Earlier studies on the pancreas of several species have indicat...

1. Some properties of the triphosphoinositide phosphomonoesterase from the homogenates of guinea-pig brain were studied. The enzyme has an optimum pH range 6.7-7.3, is stimulated with KCl at a concentration of 0.1M, and under these conditions has K. 1.43 x 10-4M. 2. A factor from the 'pH5 supernatant' of guinea-pig brain stimulates the enzyme activity over and above the stimulation produced by ...

To study the immunological activity of proteins secreted by Mycobacterium tuberculosis, we carried out comparative studies in guinea pigs infected intravenously with 2.5 x 10(3) CFU of this organism or with 2.5 x 10(4) CFU of Mycobacterium bovis BCG. Groups of infected guinea pigs were skin tested with fractions of secreted proteins covering well-defined narrow-molecular-mass regions, or such f...

The postnuclear supernatant fraction of sucrose homogenates of guinea pig polymorphonuclear leukocytes (PMNL) was subjected to differential centrifugation to obtain a total particulate fraction, a particle-free supernatant fraction, highly enriched fractions of primary and secondary granules, and a membrane-rich fraction. The various fractions were solubilized in buffer containing sodium dodecy...

Summarv: Upon differential centrifugation, the enzyme acyl CoA:dihydroxyacetone phosphate acyl transferase (EC 2.3.1.42) in guinea pig liver is shown to sediment in a lysosomal-peroxisomal fraction. Comparison of the distribution of the marker enzymes and of DHAP acyl transferase indicates that the acyl transferase is localized in peroxisomes (microbodies). Acyl dihydroxyacetone phosphate (acyl...

OBJECTIVE Nigella sativa is a medicinal plant that has long been used in traditional medicine for treating various conditions. Numerous animal studies provided evidences that the seed may elicit a broad anti-inflammatory/anti-oxidant activity. The aim of the present clinical trial was to evaluate anti-inflammatory and antioxidant properties of Nigella sativa oil in patients with rheumatoid arth...