scholarly journals Age-related changes of the noradrenergic and acetylcholinesterase reactive nerve fibres innervating the Pigeon Bursa of Fabricius

1995 ◽  
Vol 177 (3) ◽  
pp. 237-242 ◽  
Author(s):  
E. Ciriaco ◽  
A. Ricci ◽  
E. Bronzetti ◽  
C.L. Mammola ◽  
G. Germanà ◽  
...  
Keyword(s):  
Bursa Of Fabricius ◽  
Nerve Fibres ◽  
Age Related ◽  
Age Related Changes

Age-related changes in substance P-immunoreactive nerve structures of the rat recto-anal region

Open Medicine ◽  
2010 ◽  
Vol 5 (3) ◽  
pp. 358-364
Author(s):  
Nikolai Lazarov ◽  
Dimitar Itzev ◽  
Kamen Usunoff ◽  
Negrin Negrev ◽  
Radomir Radomirov
Keyword(s):  
Substance P ◽  
Anal Sphincter ◽  
Internal Anal Sphincter ◽  
Circular Muscle ◽  
Muscle Layer ◽  
Nerve Fibres ◽  
Anal Region ◽  
Age Related ◽  
Old Rats ◽  
Age Related Changes

AbstractThe recto-anal region is innervated by extrinsic and intrinsic nerves and a number of neuropeptides including substance P (SP) have been suggested to participate in the regulation of intestinal movements. We examined the age-related changes in the distribution of SP-immunoreactive nerve structures in the distal part of the rat large intestine. Using immunohistochemistry, the presence of SP was studied in fresh tissues from Wistar rats at different ages taken at three sampling sites, the distal rectum, anal canal and internal anal sphincter. In the 15-day old rats the myenteric plexus of the distal rectum and anal canal was well outlined by numerous SP-immunoreactive varicose nerve fibres encircling immunonegative perikarya. In the circular muscle layer, nerve fibres and small nerve bundles ran parallel to the muscle cells, while in the longitudinal muscle layer, only occasional nerve fibres were seen. At the level of the internal anal sphincter, no myenteric ganglia were present. Here, thin varicose fibers ran parallel to the smooth muscle cells. In the 3-month old rats, a larger number of intensely staining SP-immunoreactive nerve fibres were found and in the circular muscle layer, thicker nerve strands were observed. In the 26-month old rats, the density and staining intensity of SP-immunopositive nerve fibres in the myenteric plexus was lower than in the 3-month-old rats. Similar changes in the SP-immunostained fibres in the internal anal sphincter were observed. Degenerative alterations in SP-containing fibres during aging appear to play a role in ano-rectal motility and sphincter control.

Age-related changes in the avian primary lymphoid organs (thymus and bursa of Fabricius)

2003 ◽  
Vol 62 (6) ◽  
pp. 482-487 ◽  
Author(s):  
Emilia Ciriaco ◽  
Pablo P. Píñera ◽  
Belén Díaz-Esnal ◽  
Rosaria Laurà
Keyword(s):  
Lymphoid Organs ◽  
Bursa Of Fabricius ◽  
Age Related ◽  
Age Related Changes

Age Related Changes in the Histoarchitecture of Bursa of Fabricius in Nandanam Chicken

2017 ◽  
pp. 1
Author(s):  
Jayachandra Kempashi ◽  
Kannan Arthanari ◽  
Raja Angamuthu ◽  
Geetha Ramesh
Keyword(s):  
Bursa Of Fabricius ◽  
Age Related ◽  
Age Related Changes

Age-related changes in the medullary reticular epithelial cells of the pigeon bursa of fabricius

1996 ◽  
Vol 246 (4) ◽  
pp. 473-480 ◽  
Author(s):  
F. Sanchez-Refusta ◽  
E. Ciriaco ◽  
A. Germanà ◽  
G. Germanà ◽  
J.A. Vega
Keyword(s):  
Epithelial Cells ◽  
Bursa Of Fabricius ◽  
Age Related ◽  
Age Related Changes

Age-related changes of the 3′APOB-VNTR genotype pool in ageing cohorts

1998 ◽  
Vol 62 (2) ◽  
pp. 115-122 ◽  
Author(s):  
G. De BENEDICTIS ◽  
L. CAROTENUTO ◽  
G. CARRIERI ◽  
M. De LUCA ◽  
E. FALCONE ◽  
...  
Keyword(s):  
Age Related ◽  
Age Related Changes
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