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Results for “Injections, Intralymphatic”

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PubMed1966

Pulmonary oil deposition in patients subjected to lymphography: Detection by thoracic photoscan and sputum examination.

During clinical trials of intralymphatic therapy with radioiodinated ethiodized oil (Lipiodol Ultra-Fluid; Ethiodol) [LUF-I(131)] for malignant disease involving lymph nodes, significant pulmonary deposition of radioactive material was demonstrated by thoracic scan in each of five cases treated. Radioactivity was detected in sputum obtained from two cases. Induced sputum specimens were subsequently obtained from patients undergoing lymphography. Fat demonstrated in sputum was confirmed as Lipiodol in one of six patients tested. Sputum examination and use of tracer doses of LUF-I(131) plus photoscanning are suggested as sensitive methods of assessing the incidence of oil deposition in the lungs of patients undergoing lymphography. Despite limitation of the volume of oil injected, monitoring of the infusion, and absence of radiographic evidence of contrast medium in the lungs, some degree of pulmonary oil deposition appears to be an inevitable result of lymphography. Further study of lung dosimetry is being undertaken by the authors before clinical usage of endolymphatic radioisotope therapy is expanded.

Ethiodized Oil↗

PubMed1996

Drug delivery to lymphatic tissue.

Efficient diagnosis and therapy of diseases affecting lymph nodes rely on the availability of drugs that are retained by lymph nodes. Intralymphatically or interstitially administered macromolecular carriers accumulate efficiently in draining lymph nodes. However, because of the high variability of lymphatic networks and drainage routes, systemic administration of lymphotropic carriers would be preferable and currently represents a major focus in lymphotropic drug design. This review focuses on advances in the development of intravenous drug carriers and briefly discusses agents used for local delivery.

Administration, Oral↗

PubMed1984

Homing of germinal-center cells into germinal centers of lymph node via afferent lymphatics. An autoradiographic study in rabbits.

Affinity of lymphoid cells for the microenvironment of germinal centers (GC), as detectable in transfer experiments by rapid homing in spleen GC from the blood, is a capacity expressed by only a subset of lymphoid cells, in particular by those constituting a GC. However, when introduced into the blood stream, these cells do not home into GC of lymph nodes and gut-associated lymphoid tissues. To investigate further this homing inability for high endothelial venule (HEV)-containing lymphoid tissues, GC cells isolated from donor rabbit appendix were labeled in vitro with 3H-leucine and injected into an afferent lymph vessel of recipient popliteal lymph nodes. Draining lymph nodes were removed 15 min to 24 h after cell administration and prepared for radioautography. For reference, the migration of cells isolated from Peyer's patches and thoracic duct lymph was also studied. By use of appendix GC cells, large numbers of labeled cells were found to migrate into GCs of the outer cortex centripetally, i.e., from the subcapsular sinus through the lymphocyte corona into the GC proper. The same was observed for cells from Peyer's patches, although in smaller numbers. Thoracic duct lymphocytes were only localized in the lymphocyte corona and the deep cortex. Thus, appendix GC cells and a subpopulation of cells from Peyer's patches can reach lymph node GC, but only when administered intralymphatically.(ABSTRACT TRUNCATED AT 250 WORDS)

Animals↗