Platelet-activating factor (PAF) and its receptors are involved in inflammatory-like processes of the uterus associated with increased vascular permeability. PAF is supposed to be influenced by ovarian steroid hormones. The present study was undertaken to examine whether progesterone (P(4)), estradiol (E(2)) or PAF influence the PAF receptor gene expression in perfused endometrial explants deri...

Tuberculin from the human and from the bovine type of tubercle bacilli inhibits the growth of cells from explants of bone marrow, spleen and testes of tuberculous guinea pigs, and is toxic for these cells, but has no effect on explants of the same tissues from non-tuberculous animals. "Tuberculin" from other acid-fast bacteria has no inhibitory or toxic action on explants of tissues from either...

Rabbit tracheal explants supporting growth of inoculated Bacteroides fragilis in air were shown to keep low oxygen tension. Treating the explants with sodium azide induced high oxygen tension and arrested reversibly the growth of B. fragilis.

Human chorion can synthesize and metabolize progesterone, and changes in progesterone synthesis by chorion at term might be important in the processes leading to parturition. We examined whether other steroids present within the maternal compartment and amniotic fluid during late pregnancy influence progesterone output by explants of chorion. We also sought differences in steroid effects on pro...

An in vitro method was developed for high frequency shoot regeneration and continuous production of Brassica napus L. in large number. The different concentrations of benzyladenine (1.5, 3.0 and 4.5 mgl and thidiazuron (0, 0.15 and 0.30 mgl) were evaluated for shoot and root regeneration using hypocotyl explants with 7, 14 and 21 days old. Shoot regeneration (SR) was affected by both benzyladen...

To investigate the role of circulating humoral substances in the pathogenesis of increased vascular wall water and sodium concentration in experimental hypertension, rabbit aortic media explants were cultured in tissue culture medium supplemented (10-20%) with serum obtained from the same dogs (n = 7): 1) before the induction of hypertension; 2) after wrapping one kidney in silk (two-kidney per...

The present studies demonstrate that bacterial lipopolysaccharides (LPS) induce cartilage matrix degradation in live explants in organ culture. Quintuplicate bovine nasal fibrocartilage explants cultured for 8 d with three different purified LPS preparations derived from Escherichia coli and Salmonella typhosa at concentrations ranging from 1.0 to 25.0 micrograms/ml resulted in matrix proteogly...

Background & Aim: Dracocephalum genus belongs to the Lamiaceae family which has eight species in Iran. Dracocephalum kotschyi Boiss is an important medicinal and aromatic plant that use in pharmaceutical industry. In addition, this species is used in Iranian traditional medicine. The aim of current study was to examine the various growth regulations and explants on direct orga...

Background & Aim: Dracocephalum genus belongs to the Lamiaceae family which has eight species in Iran. Dracocephalum kotschyi Boiss is an important medicinal and aromatic plant that use in pharmaceutical industry. In addition, this species is used in Iranian traditional medicine. The aim of current study was to examine the various growth regulations and explants on direct orga...

Biological characteristics of nodule-like alveolar lesions (NLAL) induced by 7,12-dimethylbenz[a]anthracene (DMBA) in organ culture of whole mammary gland (BALB/c female mice) were assessed after transplantation into gland-free mammary fat pads of syngeneic virgin mice. (i) Tissue-fragment explants from NLAL areas of the gland produced abnormal lobuloalveolar (LA) outgrowths in 3 of 10 fat pads...