Ultrasound, Dacryocystorhinography and Morphological Examination of Normal Eye and Lacrimal Apparatus of the Donkey (Equus asinus)

Abdelbaset‐Ismail, Ahmed; Aref, Mohamed; Ezzeldein, Shimaa A.; Eisa, Eslam; Gugjoo, Mudasir Bashir; Abdelaal, Ahmed M.; Emam, Hassan; Syaad, Khalid Al; Ahmed, Ahmed Ezzat; Alshati, Ali; Raouf, Mustafa Abd El

doi:10.3390/ani12020132

Cited by 2 publications

(2 citation statements)

References 40 publications

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Section: Discussionsupporting

confidence: 50%

“…In our study, the lacrimal gland of the lowland tapirs was located in the dorsolateral angle of the eye as in equine and donkeys [ 27 , 44 , 45 , 70 , 75 , 87 ]. These glands in the examined animals had a triangular shape approaching the oval similar to that of a donkey [ 87 ], and according to Alsafy (2010) [ 44 ], the shape of this gland is determined by its position. Morphometric analysis showed that this gland in the female lowland tapirs was much larger compared to the tested superficial gland and deep gland of the third eyelid.…”

Section: Discussionmentioning

confidence: 95%

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Anatomical, Histological and Histochemical Observations of the Eyelids and Orbital Glands in the Lowland Tapir (Tapirus terrestris Linnaeus, 1785) (Perissodactyla: Ceratomorpha)

Klećkowska‐Nawrot

Goździewska‐Harłajczuk

Kupczyńska

et al. 2023

Animals

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The lowland tapir is one of four species belonging to the Tapiridae family of the Ceratomorpha suborder, similar to Rhinocerotidae. This study describes anatomy with morphometry, histology (hematoxylin and eosin, Masson-Goldner trichrome, Movat pentachrome, mucicarmine, picro-Mallory trichrome) and histochemistry (PAS, AB pH 1.0, AB pH 2.5; AB pH2.5/PAS and HDI) of the upper and lower eyelids, and superficial gland of the third eyelid with the third eyelid, deep gland of the third eyelid, and lacrimal gland. The aim of the work is to show the features of the above-mentioned structures typical only for Tapiridae, as well as to show the presence of similarities and differences between the families forming the order Perissodactyla. The eyelashes on the upper eyelid were long, while those of the lower eyelid were short and much less prominent. In the upper and lower eyelid sebaceous glands, a characteristic simple alveolar gland producing a mucus-like secretion and poorly developed tarsal glands were observed. The marginal zone of the posterior surface of the eyelids was covered by stratified columnar epithelium with 18–21 layers of nucleated cells, while the bulbar zone of these surfaces was covered by cubic multilayer epithelium with 6–11 non-keratinized layers of cells and with sparse goblet cells. In only lower eyelids, numerous lymphoid nodules, diffuse lymphocytes and high endothelial venules were observed. The superficial gland was an acinar complex which secreted mucous and contained plasma cells within the interlobular and interlobular connective tissue. The upper and lower branches of the third eyelid were the shape of a bent “caudal fin” and were composed of hyaline cartilage, and they contained conjunctiva associated lymphoid tissue (CALT). The deep gland was also an acinar complex producing a serous character and having numerous diffuse lymphocytes. The lacrimal gland was an acinar complex producing seromucous secretions and had numerous plasma cells located in the glandular interstitium. The results of our research indicate that the features of the anatomy of the eyelids and orbital region in the lowland tapir are also typical of the family Tapiridae, but also have features common to the families Equidae and Rhinocerotidae. We confirm the presence of poorly developed tarsal glands in both eyelids as well as presence of a palpebral part of the lacrimal gland in the upper eyelid, which is typical only to Tapirus terrestris.

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Section: Discussionsupporting

confidence: 50%

Section: Discussionmentioning

confidence: 95%

Anatomical, Histological and Histochemical Observations of the Eyelids and Orbital Glands in the Lowland Tapir (Tapirus terrestris Linnaeus, 1785) (Perissodactyla: Ceratomorpha)

Klećkowska‐Nawrot

Goździewska‐Harłajczuk

Kupczyńska

et al. 2023

Animals

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Determination of Morphometric Characteristics of Glandula Lacrimalis in Siirt-Colored Mohair Goat (Capra hircus) and Romanov Sheep (Ovis aries) by Computed Tomography Images

İŞBİLİR,

GÜZEL

2023

Dicle Üniversitesi Veteriner Fakültesi Dergisi

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This study was carried out to determine the morphometric characteristics of the glandula lacrimalis in Siirt-colored Mohair goats and Romanov sheep using computed tomography (CT) images and to analyze the differences between sexes and species. CT images of the glandula lacrimalis of ten male and ten female Siirt-colored Mohair goats and ten male and ten female Romanov sheep were used in the study. Morphometric measurements were taken from transversal, sagittal and dorsal sections of the right and left glandula lacrimalis in both male and female animals. Morphometric values were statistically analyzed. As a result of the study, there was no sex-related difference in morphometric measurement parameters in the Romanov sheep breed. In Siirt-colored mohair goats, statistical differences were observed in terms of TY and DU values depending on sex. Statistical similarities and differences were determined between the two species in terms of morphometric parameters. In conclusion, statistical differences in the measurement parameters of glandula lacrimalis of adult Siirt-colored Mohair goats and Romanov sheep between sexes and species were determined using computed tomography images.

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Ultrasound, Dacryocystorhinography and Morphological Examination of Normal Eye and Lacrimal Apparatus of the Donkey (Equus asinus)

Cited by 2 publications

References 40 publications

Anatomical, Histological and Histochemical Observations of the Eyelids and Orbital Glands in the Lowland Tapir (Tapirus terrestris Linnaeus, 1785) (Perissodactyla: Ceratomorpha)

Anatomical, Histological and Histochemical Observations of the Eyelids and Orbital Glands in the Lowland Tapir (Tapirus terrestris Linnaeus, 1785) (Perissodactyla: Ceratomorpha)

Determination of Morphometric Characteristics of Glandula Lacrimalis in Siirt-Colored Mohair Goat (Capra hircus) and Romanov Sheep (Ovis aries) by Computed Tomography Images

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