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Anatomia, Histologia, Embryologia

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https://www.readbyqxmd.com/read/28643890/anatomical-evaluation-of-the-thoracolumbar-nerves-related-to-the-transversus-abdominis-plane-block-technique-in-the-dog
#1
F E Castañeda-Herrera, E F Buriticá-Gaviria, D F Echeverry-Bonilla
Transversus abdominis plane (TAP) is a fascial plane containing the thoracolumbar nerve branches that innervate the abdominal wall. Limited information is available on the anatomical organization of these nerve branches in the dog, which is of great importance for the success of the TAP block anaesthetic technique. The aim of this study was to describe the origin and conformation of thoracolumbar nerves running through the TAP in 20 hemi-abdominal walls of 10 adult mongrel dog cadavers with an average body weight of 12...
June 23, 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28621033/dicephalic-parapagus-conjoined-twins-in-a-large-fruit-eating-bat-genus-artibeus-chiroptera-phyllostomidae
#2
M R Nogueira, A Ventura, C C P da Veiga, L R Monteiro, N L Pinheiro, A L Peracchi
Conjoined twinning is an embryological anomaly rarely reported in wild mammals and with only two previous records in Chiroptera. Here, we report a case of dicephalic parapagus conjoined twins in the Neotropical phyllostomid genus Artibeus. These twins are males and present separated heads and necks, but a conjoined trunk with an expanded upper thoracic region. They developed two complete forelimbs and two complete hindlimbs, all laterally to the trunk. There is a volume in the upper midback and between the heads that resembles a third rudimentary medial forelimb, but X-ray images only suggest the presence of medial skeletal elements of the pectoral girdle (clavicle and scapulae) in this region...
June 16, 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28547914/the-branching-pattern-of-the-brachiocephalic-trunk-in-the-donkey-equus-asinus
#3
G Akbari, B Asadiahranjani, N Goodarzi, S Shokrollahi
Donkeys are a member of the horse family (Equidae) and share a common ancestor. However, in morphological terms, donkeys and horses are regarded as two separate subgenus. Given variations in the branching pattern of the brachiocephalic trunk (BCT) in different species of animals and the use of donkeys in anatomy courses at colleges of veterinary medicine, we conducted this study in order to investigate the branching patterns of BCT and to describe detailed morphological information regarding donkeys. Seventeen mature donkeys were examined following euthanasia by exsanguination from the common carotid artery under general anaesthesia...
May 26, 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28543866/testicular-structure-and-seminal-pathway-in-the-yellowtail-tetra-astyanax-altiparanae-characiforms-characidae
#4
D H de Siqueira-Silva, A P Dos Santos-Silva, C Bashiyo-Silva, M S Rodrigues, C A Vicentini, A Ninhaus-Silveira, R Veríssimo-Silveira
This study aimed to describe testicular and its main ducts structure in the yellowtail tetra Astyanax altiparanae, contributing to the knowledge of the region in which semen is produced, storage and released, focusing mainly on the dynamic of germinal epithelium and Sertoli cells during germ cell maturation. Ten sexually mature male A. altiparanae had their testes processed according to the routine protocols to optical microscopy. Moreover, spermatic ducts and tubular compartment of the testes of three specimens were perfused with vinyl resin for gross anatomy and scanning electron microscopy...
May 22, 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28543621/morphological-characteristics-of-the-oropharyngeal-cavity-tongue-palate-and-laryngeal-entrance-in-the-eurasian-coot-fulica-atra-linnaeus-1758
#5
M M A Abumandour, N E R El-Bakary
The present study represents the first definitive anatomical description of the oropharyngeal cavity of the coot Fulica atra. For this purpose, the organs of six birds were prepared to examine grossly and by SEM and stereomicroscope. The oval lingual apex had multiple overlapping branched acicular processes on its anterior and lateral border. The lingual apex and body had multiple caudally directed filiform-like papillae. By stereomicroscopy, the lingual root had a characteristic appearance and consisted of four parts...
May 22, 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28466485/histological-characteristics-of-the-tracheobronchial-tree-of-the-least-shrew-cryptotis-parva
#6
F Arodaki, W Khamas, N Darmani, M Al-Tikriti
The least shrew (Cryptotis parva) is a small vomit-competent insectivorous species which has recently been introduced as an emesis animal model in the laboratory. In this study, the respiratory system of the least shrew was examined and compared with the well-established larger species routinely used in the laboratory. Five least shrews (4-5 g body weight, 45-60 days old) were used. Standard histological procedures were followed for light microscopic examination. The lining epithelium of the trachea was found to be pseudostratified ciliated columnar (PSCC)...
May 3, 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28466535/leptin-immunohistochemical-staining-in-the-porcine-ovary
#7
D Phoophitphong, S Srisuwatanasagul, P Tummaruk
This study aimed to investigate leptin immuno-staining of the porcine ovary in different reproductive stages. Ovaries from 21 gilts were collected from slaughterhouses. The ovarian tissue sections were incubated with a polyclonal anti-leptin as a primary antibody. The immuno-staining in ovarian tissue compartments was calculated using imaging software. Leptin immuno-staining was found in primordial, primary, preantral and antral follicles. Leptin immuno-staining was expressed in the oocyte and granulosa and theca interna layers in both preantral and antral follicles...
May 2, 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28421621/presence-of-ganglia-and-telocytes-in-proximity-to-myocardial-sleeve-tissue-in-the-porcine-pulmonary-veins-wall
#8
T Vandecasteele, P Cornillie, K Vandevelde, A Logothetidou, L Couck, G van Loon, W Van den Broeck
Ganglia and telocytes were identified inside the porcine pulmonary veins wall near myocardial sleeve tissue at the atriopulmonary junction. These structures are reported to play a role in the initiation of pulses from outside the heart, which potentially can cause cardiac conduction disorders such as atrial fibrillation. In-depth knowledge on the fine structure of the pulmonary vein wall is a pre-requisite to better understand the underlying pathophysiology of atrial fibrillation and the origin and conduction of ectopic pulses...
April 19, 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28401575/new-insights-into-the-neural-differentiation-potential-of-canine-adipose-tissue-derived-mesenchymal-stem-cells
#9
D Blecker, M I Elashry, M Heimann, S Wenisch, S Arnhold
Adipose tissue-derived stem cells (ASCs) can be obtained from different adipose tissue sources within the body. It is an abundant cell pool, easily accessible, suitable for cultivation and expansion in vitro and preparation for therapeutic approaches. Amongst these therapeutic approaches are tissue engineering and nervous system disorders such as spinal cord injuries. For such treatment, ASCs have to be reliably differentiated in to the neuronal direction. Therefore, we investigated the neural differentiation potential of ASCs using protocols with neurogenic inductors such as valproic acid and forskolin, while dog brain tissue served as control...
June 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28295541/feline-felis-catus-skull-and-pelvic-morphology-and-morphometry-gender-related-difference
#10
T Pitakarnnop, K Buddhachat, T Euppayo, W Kriangwanich, K Nganvongpanit
This study demonstrates sexual dimorphism of feline bones, based on a morphometric analysis of 38 dried feline skulls and pelvic bones (20 males, 18 females). A total of 44 parameters (skull = 12, mandible = 10, pelvis = 22) were measured using a digital vernier calliper. In morphological observation of these bones, there were three hallmarks indicating a remarkable difference between sexes: the coronoid process of the mandible (accuracy rate = 88.2%); and the os coxae - caudal ventral iliac spine (accuracy rate = 94...
June 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28295511/gross-measurements-of-the-digestive-tract-and-visceral-organs-of-addax-antelope-addax-nasomaculatus-following-a-concentrate-or-forage-feeding-regime
#11
S A Tahas, O Martin Jurado, S Hammer, A Arif, S Reese, J-M Hatt, M Clauss
Differences in macroscopic measurements of the gastrointestinal tract have been hypothesized to correlate with the browser-grazer continuum in the natural diet of ruminants. However, to what extent these characteristics represent species-specific traits, or respond to the actually ingested diet, remains to be investigated. Twelve surplus addax antelope (Addax nasomaculatus) were divided into two groups and fed, for 3 months, either their usual diet, consisting of a concentrate feed with a limited amount of hay, or a diet of unlimited hay only...
June 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28247417/a-morphological-and-stereological-study-on-cervical-segment-of-spinal-cord-of-quails
#12
G Cakmak, Z Soyguder, M C Ragbetli
In this study, volume densities of white and grey matters of cervical segments of spinal cords of quail were investigated stereologically. In both sexes, mature, six quails were used as material of this study. All animals were fixed by perfusing in 10% buffered formalin. Tissue specimens were obtained from cervical spinal cords. These tissue specimens were cut every fiftieth section at 5 μm thickness by a microtome. And mean six or seven sections were examined from every block by this method at microscope...
June 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28239900/the-influence-of-the-size-age-and-sex-on-the-computed-tomographic-measured-size-of-the-pituitary-gland-in-normal-horses
#13
C P Crijns, H J Van Bree, B J G Broeckx, S Schauvliege, G Van Loon, A Martens, K Vanderperren, W B Dingemanse, I M Gielen
The objective of this study was to examine the influence of the size, age and sex of the horse on the size of the pituitary gland and determine the possibility of using the pituitary gland height-to-brain area ratio (P:B ratio) to allow comparison of different sized and aged horses. Thirty-two horses without pituitary pars inter-media dysfunction that underwent a contrast-enhanced computed tomographic (CT) examination were included in a cross-sectional study. On the CT images, the pituitary gland height was measured and the P:B ratio was calculated...
June 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28239895/ultrastructure-of-cell-organelles-in-pre-implantation-embryos-from-cows-with-different-body-condition-score
#14
L Olexiková, J Pivko, A V Makarevich, E Kubovičová, A Ostró, J Živčák, P Chrenek
Morphology of important cell organelles (mitochondria, lipid droplets, vacuoles, inclusion bodies and apoptotic bodies) in embryos derived from cows with different body condition score (BCS) was analysed by transmission electron microscopy (TEM). Embryos were recovered on 7th day after the insemination by a standard non-surgical flushing of the uterine horns from superovulated Holstein Friesian cows with BCS 2, 3, 4 and 5. Thereafter, the good quality blastocysts were processed for TEM. The electronograms were evaluated by stereological analysis...
June 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28122400/structure-and-innervation-of-the-equine-supraspinous-and-interspinous-ligaments
#15
A Ehrle, L Ressel, E Ricci, E R Singer
Pain related to the osseous thoracolumbar spine is common in the equine athlete, with minimal information available regarding soft tissue pathology. The aims of this study were to describe the anatomy of the equine SSL and ISL (supraspinous and interspinous ligaments) in detail and to assess the innervation of the ligaments and their myofascial attachments including the thoracolumbar fascia. Ten equine thoracolumbar spines (T15-L1) were dissected to define structure and anatomy of the SSL, ISL and adjacent myofascial attachments...
June 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28120342/morphological-study-of-the-persian-leopard-panthera-pardus-saxicolor-tongue
#16
J Sadeghinezhad, M T Sheibani, I Memarian, R Chiocchetti
This study described the morphological features of the Persian leopard (Panthera pardus saxicolor) tongue using light and scanning electron microscopy techniques. The keratinized filiform papillae were distributed all over the entire dorsal surface of the tongue and contained small processes. They were changed into a cylindrical shape in the body and conical shape in the root. The fungiform papillae were found on the apex and margin of the tongue. Few taste pores were observed on the dorsal surface of each papilla...
June 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28111781/a-macro-anatomical-investigation-of-the-some-skull-bones-of-nehring-s-blind-mole-rats-spalacidae-nannospalax-nehringi
#17
Ş Ketani, M Kilinç, S Erdoğan, A Kaya, Y Coşkun
This study was aimed to demonstrate the specific anatomical features of the skull bones of Nehring's blind mole rats. Eight skulls, belonging to animals of both sexes, were used. The occipital squama contributed to the formation of the caudal portion of the skull roof. The foramen magnum was quite large. The external occipital crest was present only in the males. The parietal bones formed the middle portion of the skull roof together with the well-developed inter-parietal bones. The zygomatic process of the temporal bone formed the zygomatic arch by extending to the temporal process of the zygomatic bone...
June 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28105755/morphometric-changes-in-polish-konik-mares-after-nearly-a-hundred-years-of-the-breed-s-existence
#18
E Pasicka, K Tarnawski, A Chrószcz, H Geringer de Oedenberg
The study was carried out on 126 mares of the Polish Konik horse breed. Mares were bred under a stable system housing and they came from five leading conservation breeding centres. The mares were divided into three age groups: 3-5 years old, 6-9 years old and over 10 years old. Each animal was characterized using 40 morphometric measurements. Discriminant analysis proved the exterior differences of mares in terms of the analysed metric values. It was concluded that the morphotype of modern Polish Konik mares is statistically significantly influenced by the following traits: neck ventral length, forearm circumference, distance between the vascular notch (incisura vasorum facialium) and the oral angle (angulus oris), distance between the margo coronalis ungulae and the margo solearis ungulae of the thoracic limb, thorax circumference and pelvis width...
June 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/27611647/immunohistochemical-localization-of-luteinizing-hormone-receptor-in-the-cyclic-gilt-ovary
#19
D Phoophitphong, S Srisuwatanasagul, P Tummaruk
Luteinizing hormone receptor (LHR) is a specific membrane receptor on the granulosa and theca cells that bind to luteinizing hormone (LH), resulting in androgen and progesterone production. Hence, the regulation of LHR expression is necessary for follicle maturation, ovulation and corpus luteum formation. We examined the immunolocalization of LHR in cyclic gilt ovaries. The ovaries were obtained from 21 gilts aged 326.0 ± 38.7 days and weighing 154.6 ± 15.7 kg. The ovarian tissues were incubated with rabbit anti-LHR polyclonal antibody...
February 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/27477545/seasonal-changes-in-the-immunolocalization-of-cytoskeletal-proteins-and-laminin-in-the-testis-of-the-black-backed-jackal-canis-mesomelas
#20
M-C Madekurozwa, D Booyse
Manipulation of the reproductive activity of jackals is dependent on a thorough understanding of the reproductive biology of this species. This study describes seasonal morphological changes in the adult testis of the black-backed jackal in relation to the immunoexpression of the basement membrane marker, laminin and the cytoskeletal proteins, cytokeratin, smooth muscle actin and vimentin. Laminin was immunolocalized in basement membranes surrounding seminiferous tubules, as well as in basement membranes associated with Leydig, peritubular myoid and vascular smooth muscle cells...
February 2017: Anatomia, Histologia, Embryologia
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