Ovarian steroid effects on light-induced retinal photoreceptor damage

1977 ◽  
Vol 25 (4) ◽  
pp. 361-369 ◽  
Author(s):  
W.K. O'Steen
2012 ◽  
Vol 25 (1) ◽  
pp. 27-35 ◽  
Author(s):  
Katsuhiko Yoshizawa ◽  
Tomo Sasaki ◽  
Norihisa Uehara ◽  
Maki Kuro ◽  
Ayako Kimura ◽  
...  

BPB Reports ◽  
2021 ◽  
Vol 4 (1) ◽  
pp. 1-5
Author(s):  
Miruto Tanaka ◽  
Yuki Inoue ◽  
Yuta Yoshino ◽  
Yoshiki Kuse ◽  
Norifumi Tanida ◽  
...  

2020 ◽  
Vol 98 (9) ◽  
pp. 424-428
Author(s):  
BG Spencer ◽  
PC Blumbergs ◽  
J Manavis ◽  
JW Finnie

Author(s):  
W. Krebs ◽  
I. Krebs

Various inclusion bodies occur in vertebrate retinal photoreceptor cells. Most of them are membrane bound and associated with phagocytosis or they are age related residual bodies. We found an additional inclusion body in foveal cone cells of the baboon (Papio anubis) retina.The eyes of a 15 year old baboon were fixed by immersion in cacodylate buffered glutaraldehyde (2%)/formaldehyde (2%) as described in detail elsewhere . Pieces of retina from various locations, including the fovea, were embedded in epoxy resin such that radial or tangential sections could be cut.Spindle shaped inclusion bodies were found in the cytoplasm of only foveal cones. They were abundant in the inner segments, close to the external limiting membrane (Fig. 1). But they also occurred in the outer fibers, the perikarya, and the inner fibers (Henle’s fibers) of the cone cells. The bodies were between 0.5 and 2 μm long. Their central diameter was 0.2 to 0. 3 μm. They always were oriented parallel to the long axis of the cone cells. In longitudinal sections (Figs. 2,3) they seemed to have a fibrous skeleton that, in cross sections, turned out to consist of plate-like (Fig.4) and tubular profiles (Fig. 5).


2016 ◽  
Vol 76 (10) ◽  
Author(s):  
S Heublein ◽  
S Hecht ◽  
V Nick ◽  
S Mahner ◽  
C Thaler ◽  
...  

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Sawsan Ismail ◽  
Munawar Hraib ◽  
Rana Issa ◽  
Thanaa Alassi ◽  
Zuheir Alshehabi

Abstract Background Ovarian steroid cell tumors represent a rare category of sex cord-stromal tumors that constitute less than 0.1% of all ovarian tumors. These neoplasms are classified into three main subtypes according to the cell of origin: Leidyg cell tumors, stromal luteomas, and steroid cell tumors not otherwise specified (SCTs-NOS). The latter subtype is defined as a neoplasm of an uncertain lineage that mostly affects middle-aged women, whereas it’s rare in younger ages. Case presentation We report a case of a 21-year-old virgin female who presented to our hospital with complaints of mild abdominal pain, hirsutism, and oligomenorrhea for more than a year. Before her current admission, the patient had attended an external gynecologic clinic where she had been prescribed oral contraceptives to regulate her periods. Nevertheless, on presentation to our institution, physical examination revealed abdominal tenderness with a palpable pelvic mass and mild hirsutism in the thigh. Ultrasonography demonstrated a large left ovarian mass measuring 154 × 104 mm, and compressing the uterus. Therefore, a unilateral salpingo-oophorectomy was performed, and interestingly, pathologic examination of the large aforementioned mass alongside with immunohistochemical correlation revealed the diagnosis of a large ovarian steroid cell tumor-not otherwise specified with a unique combination of benign and malignant features. Conclusions Although ovarian steroid cell tumors represent a rare category, they must be considered in the differential diagnosis for mild virilization symptoms in young females due to the importance of early diagnosis and management. In this manuscript, we aimed to present the first case report from Syria that highlights the crucial role of detailed morphological examination for challenging cases despite the difficulties in differential diagnosis, and the absence of ancillary techniques. Furthermore, we managed to discuss a brief review of diagnostic methods, histological characteristics, and treatment recommendations.


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