Ultrastructure and analytical microprobe analysis of simian lung mite pigments

Author(s):  
R. W. Cole ◽  
J. C. Kim

In recent years, non-human primates have become indispensable as experimental animals in many fields of biomedical research. Pharmaceutical and related industries alone use about 2000,000 primates a year. Respiratory mite infestations in lungs of old world monkeys are of particular concern because the resulting tissue damage can directly effect experimental results, especially in those studies involving the cardiopulmonary system. There has been increasing documentation of primate parasitology in the past twenty years.

Author(s):  
James C. S. Kim

Despite the demonstrated high incidence of lung mite infection in Old World monkeys, almost nothing is known of the life history and physiology of the parasite or the pathogenesis or the ecology of the disease. It is recognized that international quarantine regulation would not prevent importation of internal parasite such as lung mite. This raises serious concern as ticks and mites are arthropod which serve as both true reservoir and vectors.There is no published work of the ultrasturcture of Mesostigmata organs or tissues. In addition, urgent needs exist to rule out the possibility of this parasite acting as possible vector of unknown pathogens which has not been introduced to this country.


Parasitology ◽  
1972 ◽  
Vol 64 (1) ◽  
pp. 47-52 ◽  
Author(s):  
M. Brack

Histochemical analyses of the pigment accompanying lung mite infections in Old World monkeys indicate that, contrary to other endogeneous pigments, this pigment is not homogenous, but consists of at least three components. One fraction is formed by fine granular or amorphous cleavage products of mucin substances, the second portion appears to be large granules of haemosiderin and/or lipofuscin, and the third component consists of needle-like crystals of unknown chemical nature. The source and nature of the pigment are discussed.I am grateful for the technical assistance of Mrs J. A. Silva and the support by Drs R. T. Damian, S. S. Kalter, R. E. Kuntz and B. J. Myers; Southwest Foundation for Research and Education, San Antonio, Texas.This study was funded in part by U.S.P.H.S. Grants RR-00361, RR-00278 and RR-00451 and WHO Grant Z2/181/27.


1989 ◽  
Vol 146 (1) ◽  
pp. 21-38 ◽  
Author(s):  
J. D. Mollon

The disabilities experienced by colour-blind people show us the biological advantages of colour vision in detecting targets, in segregating the visual field and in identifying particular objects or states. Human dichromats have especial difficulty in detecting coloured fruit against dappled foliage that varies randomly in luminosity; it is suggested that yellow and orange tropical fruits have co-evolved with the trichromatic colour vision of Old World monkeys. It is argued that the colour vision of man and of the Old World monkeys depends on two subsystems that remain parallel and independent at early stages of the visual pathway. The primordial subsystem, which is shared with most mammals, depends on a comparison of the rates of quantum catch in the short- and middle-wave cones; this system exists almost exclusively for colour vision, although the chromatic signals carry with them a local sign that allows them to sustain several of the functions of spatiochromatic vision. The second subsystem arose from the phylogenetically recent duplication of a gene on the X-chromosome, and depends on a comparison of the rates of quantum catch in the long- and middle-wave receptors. At the early stages of the visual pathway, this chromatic information is carried by a channel that is also sensitive to spatial contrast. The New World monkeys have taken a different route to trichromacy: in species that are basically dichromatic, heterozygous females gain trichromacy as a result of X-chromosome inactivation, which ensures that different photopigments are expressed in two subsets of retinal photoreceptor.


Author(s):  
Stephen R Frost ◽  
Christopher C Gilbert
Keyword(s):  

PLoS ONE ◽  
2013 ◽  
Vol 8 (5) ◽  
pp. e64936 ◽  
Author(s):  
Meike Hermes ◽  
Christina Albrecht ◽  
Annette Schrod ◽  
Markus Brameier ◽  
Lutz Walter

2006 ◽  
Vol 14 (1) ◽  
pp. 33-48 ◽  
Author(s):  
R. C. VAN CAENEGEM

The unification of European law – if it is ever achieved – belongs to the future, but much of this present article will be devoted to the past. This makes me look like the ancient Roman king Janus, upon whom the god Saturn bestowed the gift of seeing the future as well as the past, which led to his famous representation, in his Roman temple, as a man with two faces. As a professional historian I am, of course, concerned with past centuries, but the future of Europe and European law concerns me as a citizen of the Old World.


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