Phylogenetic and Conceptual Aspects of the Subcommissural Organ

1993 ◽  
pp. 23-32 ◽  
Author(s):  
A. Oksche
Keyword(s):  
Author(s):  
Pedro Fern�ndez-Llebrez ◽  
Elena Miranda ◽  
Guillermo Estivill-Torr�s ◽  
Manuel Cifuentes ◽  
Jesus M. Grondona ◽  
...  

1999 ◽  
Vol 296 (3) ◽  
pp. 457-469 ◽  
Author(s):  
S. Rodríguez ◽  
E. H. Navarrete ◽  
K. Vio ◽  
C. González ◽  
K. Schöbitz ◽  
...  

1967 ◽  
Vol 45 (1) ◽  
pp. 117-126 ◽  
Author(s):  
M. A. Hafeez ◽  
P. Ford

The morphohistology and some histochemical aspects of the pineal organ in the sockeye salmon were studied. The distal part of the organ lies in a pineal fossa in the cranial roof. Photosensory cells and two kinds of ependymal supporting cells are present throughout its epithelium, which is entirely devoid of either melanin or lipofuchsin. Besides sensory nerve fibers, efferent end-loops are present on the photosensory as well as the supporting cells. The dorsal pineal nerve tract probably contains both sensory and efferent fibers. The apocrine secretion of sensory as well as some supporting cells is probably associated with either the maintenance of a constant chemical composition of the cerebrospinal fluid or with supply of certain chemical substances to the brain tissue. The secretion in the pineal and the subcommissural organ consists of glycogen, mucopolysaccharides, mucoproteins, and aldehyde fuchsin positive granules.It is proposed that the pineal organ is photosensory as well as secretory and that its photosensitivity might be of some significance in the light-dependent behavior of this species in terms of intensity detection.


1981 ◽  
Vol 10 (3) ◽  
pp. 411-424 ◽  
Author(s):  
H. Gamrani ◽  
M. F. Belin ◽  
M. Aguera ◽  
A. Calas ◽  
J. F. Pujol

Endocrinology ◽  
1963 ◽  
Vol 72 (1) ◽  
pp. 28-32 ◽  
Author(s):  
MIKLOS PALKOVITS ◽  
PETER I. FÖLDVARI

1988 ◽  
Vol 55 (1-4) ◽  
pp. 233-249
Author(s):  
Vittorio D'uva ◽  
Lorenzo Varano

2015 ◽  
Vol 2015 ◽  
pp. 1-4
Author(s):  
Marcos Rosa Junior ◽  
Antonio Jose da Rocha ◽  
Adriano Zanon da Silva ◽  
Sergio Rosemberg

Tumors of the pineal region are rare and can be challenging to differentiate by imaging. Papillary tumor of the pineal region (PTPR) was recently recognized as a neoplasm in the World Health Organization (WHO) 2007 classification, arising from specialized ependymocytes in the subcommissural organ, which is located in the pineal region. It is a rare histological type of pineal tumor with only a few cases reported. Here, we describe a case of histologically confirmed PTPR in a 17-year-old man who presented with a headache. A literature review was performed to clarify the clinical, radiological, and pathological features of PTPR. Pineal neoplasms do not have pathognomonic imaging findings; however, we discuss T1 hyperintensity, which is a key for imaging diagnosis according to recent reports. In particular, if the hyperintensity in T1 is not due to fat, calcification, melanin, or hemorrhage in a mass of the posterior commissure or pineal region, the diagnosis of a PTPR may be suggested, as observed in this case.


1956 ◽  
Vol 126 (2) ◽  
pp. 253-265 ◽  
Author(s):  
Gordon J. Gilbert
Keyword(s):  

2005 ◽  
Vol 321 (3) ◽  
pp. 429-441 ◽  
Author(s):  
C. Hoyo-Becerra ◽  
M. D. López-Avalos ◽  
M. Alcaide-Gavilán ◽  
M. C. Gómez-Roldán ◽  
J. Pérez ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document