actinomycosis and nocardiosis, respectively. Actinomyces israelii are gram-positive bacillary and branching forms that are referred to as "higher" bacteria. These organisms occur as parasites in humans and other animals. In tissues, they form hard "sulfur" granules. They need blood for growth on media.
Nocardia asteroides are also gram-positive, filamentous "higher" bacteria. Fragments of hyphae appear as bacilli (rod-shaped bacteria) or cocci (spherical bacteria). Many strains are not easily decolorized by acids (acid-fast). They are often found in soil, and grow well on ordinary media. In addition, the pathophysiology of this microorganism in other to be present in appendix tissue needs either a systemic infection in place or a post-surgical granulomatous reaction occurring at same time. All this blows out any possibility to find them in normal appendix. I hope this help you. Jaime E Plata MD.MT.HTL --- On Sat, 6/13/09, Gomez, Milton <milton.go...@aruplab.com> wrote: From: Gomez, Milton <milton.go...@aruplab.com> Subject: [Histonet] Gram Control To: "Histonet" <Histonet@lists.utsouthwestern.edu> Date: Saturday, June 13, 2009, 5:01 PM Will a normal human appendix demonstrate Gram + and negative bacteria, and also Filaments of Nocardia and Actinomyces? MG - ------------------------------------------------------------------ The information transmitted by this e-mail and any included attachments are from ARUP Laboratories and are intended only for the recipient. The information contained in this message is confidential and may constitute inside or non-public information under international, federal, or state securities laws, or protected health information and is intended only for the use of the recipient. Unauthorized forwarding, printing, copying, distributing, or use of such information is strictly prohibited and may be unlawful. If you are not the intended recipient, please promptly delete this e-mail and notify the sender of the delivery error or you may call ARUP Laboratories Compliance Hot Line in Salt Lake City, Utah USA at (+1 (800) 522-2787 ext. 2100 _______________________________________________ Histonet mailing list Histonet@lists.utsouthwestern.edu http://lists.utsouthwestern.edu/mailman/listinfo/histonet _______________________________________________ Histonet mailing list Histonet@lists.utsouthwestern.edu http://lists.utsouthwestern.edu/mailman/listinfo/histonet
