The high prevalence of glaucoma (7.3%) in the Akinyele district in southwestern Nigeria is comparable with those in predominantly black populations in the Akwapim-South district of Ghana and Barbados. Primary open angle glaucoma remains the most prevalent form of glaucoma.
Anomalies of placental growth with respect to its shape have been associated with adverse pregnancy outcomes. A very rare form of 'H' bilobate placental partition was observed in a 31-year-old woman presenting at 24 weeks of gestation. This observation was made during a routine obstetrics scan. Sonographic features showed that it was a non-fibroid partition. The placenta featured anterior and posterior portions separated by a large middle, vertical portion. The placenta was antero-posterior semi-circumferential in shape, measuring approximately 16.70 cm in length and 12.48 cm at shorter chorionic plate (minor axis). The middle, vertical part of the placenta partitioned the uterine cavity into two, creating the impression of two separate gestational sacs. The fetus was located in one of these. The patient was eventually delivered through caesarean section at gestational age (GA) of 36 weeks 6 days. The baby had a low birth weight of 1.70 kg. The early detection of this placental anomaly underlines the importance of ultrasonography in obstetrics.
Introduction: The epididymis is a tube of smooth muscle lined by a pseudostratified epithelium; the duct is lined by smooth muscle and the stroma is made up of connective tissue. Reticulin fibres are fine fibres that contain primarily collagen type III that are secreted by reticular cells and are traditionally thought to be present only in soft blood-forming tissues such as kidney, liver, bone marrow and organs of the lymphatic system such as thymus. Methods: This work demonstrates for the first time the presence of reticulin fibres in the epididymis of adult male Wistar rats using silver impregnation method. Results: The results show reticulin fibres around the peritubular ductal walls and in the connective tissue stroma. Conclusion: The presence of reticulin fibres within the epididymal connective tissue may have effect on contractility, assisting the movement of sperms from the caput portion of the duct to the caudal part.
Lizards have a way of shedding their tails as a defense strategy to facilitate escape from predators. Specific mechanisms are involved in this process of caudal autotomy, as well as in the subsequent tissue regeneration leading to the restoration of the structure and function of the sacrificed tail. Twenty Christinus marmoratus (wall gecko) were used for this study. Under anesthesia with Chloroform, the autotomizing plane of Christinus marmoratus was located (which is about 5 mm to the cloaca), and excised with a clean surgical blade and fixed in 10% formalin. The tails were processed and stained in Hematoxylin and Eosin stains; and connective tissue fibers were demonstrated using Gordon and Sweet's, van Gieson's and Gomori's aldehyde fuchsin's stains. Images of 1.2 mm² areas were viewed using an Olympus binocular microscope and captured with a panasonic video camera. The histological results showed the presence of connective tissue fibers such as collagen, elastic and reticulin fibers, as well as adipose tissue. The spine was sheathed with a thick layer of longitudinal skeletal muscle fibers. The epithelial lining was stratified squamous with the presence of goblet cells, and apposed to the joints are elastic cartilage and blood vessels. These observations support the practices of tail autotomy and regeneration by Christinus marmoratus.
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