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Biomedical subjects

J D Trelford

Publications and source records attributed to J D Trelford.

At least 37 records · Page 2Linked to original sources
PubMed1975

The effect of immunizing female rats with modified rat pituitary extract.

Immune reactions to a number of hormones have been induced, but information is lacking on the feasibility of inducing immune reactions to homologous gonadotropins. Female rats immunized with diazotized and tyrosylated rat pituitary extract containing gonadotropic activity and emulsified in complete Freund's adjuvant expressed various reproductive disturbances such as increased cycle length (7.0 days), increased number of sterile matings, reduced implantation in animals becoming pregnant, and reduced ability to carry fetuses to term. These effects were not exhibited by rats immunized similarly with diazotized or tyrosylated rat pituitary extract containing no detectable gonadotropic activity. Rats not becoming pregnant had a significantly higher antibody level to rat luteinizing hormone than did rats becoming pregnant. No significant elevation of rat follicle-stimulating hormone antibodies was noted. It is concluded that auto-immune reactions to gonadotropins can be induced and that very low levels of antibodies have a significant effect on reproduction.

Animals↗
PubMed1975

Implanted amniotic membrane as an autograft and as an allograft.

Detailed studies on autograft and allograft amniotic membranes implanted in the subcutaneous tissues to form tunnels are described. Autograft amniotic membranes appear to become permanent structures whereas allografts of this material, though accepted by the host for a longer time than most allografts, were eventually rejected. Serial histological studies were performed.

Amnion↗
PubMed1975

Amnion autografts, permanent structure.

Autografts of amniotic membrane were used to form tubes or conduits in lambs. These conduits survived for periods up to 9 months. The possibility of a clinical application has been explored.

Amnion↗
PubMed1975

Wound healing and the amniotic membrane.

The successful clinical application of the amniotic membrane as a surgical dressing is discussed as to the mode of healing. The amniotic membrane does not appear to be a permanent structure when used as an allograft.

Amnion↗
PubMed1972

Inductive interactions between human dermis and chick chorionic epithelium.

In a study of specificity in mesenchymal-epithelial interactions, human embryonic dermis has been recombined with chick chorionic epithelium and cultured for 7 days on a host chick chorioallantoic membrane. Dermis from the sole of the foot or palm of the hand induces chick chorionic epithelium to form an epidermis that resembles chick rather than human epidermis. Chick epithelium, though it has the capacity to respond to a human dermal stimulus, is limited to forming chick-type tissue. The human dermis was modified in its turn by culture in combination with chick epithelium.

Animals↗