Concentration of elastic system fibers in the corpus cavernosum, corpus spongiosum, and tunica albuginea in the rabbit penis

Samples of ten penises of Mediterranean buffaloes and ten penises of Red Sindhi cattle were used. The thickness of the tunica albuginea (TA), distribution of smooth muscle cells (SMC) and volume density (Vv) of elastic system fibers in TA, corpus cavernosum (CC) and corpus spongiosum (CS) were evaluated. The Vv of elastic system fibers in buffalo and bovine penis was respectively 4.07% ±0.88% and 3.36% ±1.21% in TA; 17.32% ±2.21% and 13.14% ±1.27% (CC), 26.58% ±4.31% and 31.36% ±3.67% (CS). The CC of buffalo presented higher Vv of elastic fibers than bovine, while in the CS the Vv of elastic fibers in buffaloes was smaller than in cattle. The TA thickness showed a significant difference among the species studied. The arrangement of SMC in the bovine penises and in the water buffalo suggests that this pattern is common to animals that have fibroelastic penises.

Download Full-text

Morphological analysis of the elastic and collagen fibers in the ram penis

Pesquisa Veterinária Brasileira ◽

10.1590/1678-5150-pvb-5325 ◽

2018 ◽

Vol 38 (11) ◽

pp. 2159-2165 ◽

Cited By ~ 1

Author(s):

Bruno Cesar Schimming ◽

Gustavo N. Moraes

Keyword(s):

Extracellular Matrix ◽

Morphological Analysis ◽

Sigmoid Flexure ◽

Tunica Albuginea ◽

Corpus Cavernosum ◽

Reproductive Organs ◽

Collagen Fibers ◽

Elastic Fibers ◽

Corpus Spongiosum ◽

Domestic Ruminants

ABSTRACT: The penis represents the organ of the male’s copulation. It is essential to know the reproductive biology and the morphology of the reproductive organs to increase animal production. In order to contribute to this knowledge and provides information on the ram reproductive morphology, the purpose of this work was to describe the distribution, based on light microscopy, of the collagen and elastic fibers in the ram penis. For that, were collected transverse fragments of the penis (root, sigmoid flexure, body and glans) of seven rams. The specimens were fixed in paraformaldehyde for 24h and destined for the histological routine. The extracellular matrix of the ram penis was composed of collagen and elastic fibers. The penis was enveloped by the tunica albuginea, consisting essentially of collagen fibers, which were arranged in two layers: an outer longitudinal and an inner circular. This tunic emitted septa that penetrated the corpus cavernosum. The elastic fibers appeared transversely and longitudinally in the corpus cavernosum, corpus spongiosum, and next to the neurovascular bundle of the penis. This structure was not different to that reported for other domestic ruminants such as cattle and buffaloes.

Download Full-text

Effects of castration on penile extracellular matrix morphology in domestic cats

Journal of Feline Medicine and Surgery ◽

10.1177/1098612x16689405 ◽

2017 ◽

Vol 19 (12) ◽

pp. 1261-1266 ◽

Cited By ~ 6

Author(s):

Nathalia CS Borges ◽

Marco A Pereira-Sampaio ◽

Vivian Alves Pereira ◽

Marcelo Abidu-Figueiredo ◽

Maurício Alves Chagas

Keyword(s):

Extracellular Matrix ◽

Tunica Albuginea ◽

Corpus Cavernosum ◽

Collagen Fibers ◽

Elastic Fibers ◽

Corpus Spongiosum ◽

Predisposing Factor ◽

Luminal Area ◽

Matrix Morphology ◽

Student’S T

Objectives This study was undertaken to verify the possible modifications caused by hormonal deprivation in the extracellular matrix in the penises of neutered cats. Methods Twenty-seven penises from domestic shorthair cats were collected: 14 samples from intact cats and 13 from neutered cats. Sections were stained with Weigert’s resorcin-fuchsin, hematoxylin and eosin, and picrosirius red. Histomorphometric analysis was performed using light microscopy and image analysis software. The following parameters were analyzed: density of the elastic fibers and collagen fibers in the corpus spongiosum; density of the elastic fibers in the tunica albuginea of the corpus cavernosum and the tunica albuginea of the corpus spongiosum; luminal area of the urethra; area of the corpus spongiosum; area of the corpus cavernosum; and thickness of the urethral epithelium. The data were analyzed using the Shapiro–Wilk test to verify the normal distribution, and groups were compared using Student’s t-test; P <0.05 indicated statistically significant differences. Results Significant differences were observed between intact cats and neutered cats in the density of elastic fibers in the tunica albuginea of the corpus cavernosum (8.13% ± 1.38% vs 3.11% ± 0.66%), tunica albuginea of the corpus spongiosum (4.37% ± 1.08% vs 3.30% ± 1.01%) and corpus spongiosum (6.28% ± 3.03% vs 4.10% ± 2.19%), and density of collagen fibers in the corpus spongiosum (34.11% ± 10.86% vs 44.21% ± 12.72%). Conclusions and relevance The results show a significant decrease in the density of the elastic fibers and a significant increase of the density of the collagen fibers in the corpus spongiosum in neutered animals. This suggests that the compliance of the periurethral region is reduced, and these changes could be a predisposing factor for urethral obstructive disease.

Download Full-text

Fracture penis: rare occurrence

International Surgery Journal ◽

10.18203/2349-2902.isj20184656 ◽

2018 ◽

Vol 5 (11) ◽

pp. 3747

Author(s):

Akhilesh Kumar Yadav ◽

Sankalp Dwivedi ◽

Sagar Bassi ◽

Sunil Kumar Singh

Keyword(s):

Blunt Trauma ◽

Tunica Albuginea ◽

Corpus Cavernosum ◽

Penile Curvature ◽

Corpus Spongiosum ◽

Penile Fracture ◽

Immediate Surgery ◽

Almost All ◽

Erect Penis

Fracture Penis is not usual. It is a tear in the tunica albuginea of the corpora cavernosa with or without involvement of corpus spongiosum and urethra. The usual cause is abrupt bending of the erect penis by blunt trauma, most commonly during sexual intercourse. A crackling sound, pain, detumescences, bruising, swelling, and bleeding per urethra are the common symptoms reported by the patients. Early surgical management is treatment of choice. Diagnosis of Penile Fracture refers to a rupture of the corpus cavernosum induced by blunt trauma to erect penis. Mainly diagnosed clinically from their stereotypical crackling sound from the erect penis at the moment of injury, rapidly followed by acute swelling, pain and penile deformity. Treatment recommendations include immediate exploration and repair. Surgical repair requires evacuation of hematoma, identification of tear, repair of the tear and ligation of any disrupted vasculature. Long term complications after repair include penile deviation, painful intercourse, painful erection and erectile dysfunction. The diagnosis of penile fracture is mostly clinical. Based on physical examination and typical crackling sound at the time of injury. Prompt surgical exploration and repair are advocated in almost all cases. Immediate surgery reduces long term complication which is post-traumatic penile curvature.

Download Full-text

Effects of Vitamin D Restricted Diet Administered during Perinatal and Postnatal Periods on the Penis of Wistar Rats

BioMed Research International ◽

10.1155/2018/6030646 ◽

2018 ◽

Vol 2018 ◽

pp. 1-9 ◽

Cited By ~ 2

Author(s):

Flávia Fernandes-Lima ◽

Bianca M. Gregório ◽

Fernanda A. M. Nascimento ◽

Waldemar S. Costa ◽

Carla B. M. Gallo ◽

...

Keyword(s):

Vitamin D ◽

Structural Changes ◽

Tunica Albuginea ◽

Corpus Cavernosum ◽

Elastic Fibers ◽

Standard Diet ◽

Corpus Spongiosum ◽

Histomorphometric Analysis ◽

Restricted Diet ◽

Cross Sectional

Vitamin D deficiency is common in pregnant women and infants. The present study aimed to investigate the effects of vitamin D restricted diet on the Wistar rats offspring penis morphology. Mother rats received either standard diet (SC) or vitamin D restricted (VitD) diet. At birth, offspring were divided into SC/SC (from SC mothers, fed with SC diet) and VitD/VitD (from VitD mothers, fed with VitD diet). After euthanasia the penises were processed for histomorphometric analysis. The VitD/VitD offspring displayed metabolic changes and reduction in the cross-sectional area of the penis, corpus cavernosum, tunica albuginea, and increased area of the corpus spongiosum. The connective tissue, smooth muscle, and cell proliferation percentages were greater in the corpus cavernosum and corpus spongiosum in the VitD/VitD offspring. The percentages of sinusoidal spaces and elastic fibers in the corpus cavernosum decreased. The elastic fibers in the tunica albuginea of the corpus spongiosum in the VitD/VitD offspring were reduced. Vitamin D restriction during perinatal and postnatal periods induced metabolic and structural changes and represented important risk factors for erectile dysfunction in the penis of the adult offspring. These findings suggest that vitamin D is an important micronutrient in maintaining the cytoarchitecture of the penis.

Download Full-text

Penile fracture: A rare case of simultaneous rupture of the one corpus cavernosum and complete urethral rupture

Vojnosanitetski pregled ◽

10.2298/vsp1501060n ◽

2015 ◽

Vol 72 (1) ◽

pp. 60-62

Author(s):

Djordje Nale ◽

Nebojsa Bojanic ◽

Predrag Nikic

Keyword(s):

Tunica Albuginea ◽

Corpus Cavernosum ◽

Traumatic Rupture ◽

Corpus Spongiosum ◽

Penile Fracture ◽

Voiding Function ◽

The One ◽

The Right ◽

Urethral Rupture ◽

Simultaneous Rupture

Introduction. Penile fracture is a traumatic rupture of tunica albuginea and the tumescent corpora cavernosa due to the nonphysiological bending of the penile shaft, presenting with or without rupture of corpus spongiosum and urethra. The incidence of concomitant injury of the urethra is 0-38%. Complete urethral rupture is rare, but it is almost always associated with bilateral corporeal injury. Case report. We presented a patient with complete urethral rupture, and rupture of the right cavernous body. According to the available literature, this case is extremely rare. Conclusion. Fracture of the penis is relatively uncommon and is considered a urologic emergency. Prompt surgical exploration and repair can preserve erectile and voiding function.

Download Full-text

Expansion of the tunica albuginea during penile inflation in the nine-banded armadillo (Dasypus novemcinctus)

Journal of Experimental Biology ◽

10.1242/jeb.202.3.253 ◽

1999 ◽

Vol 202 (3) ◽

pp. 253-265

Author(s):

D.A. Kelly

Keyword(s):

Tunica Albuginea ◽

Corpus Cavernosum ◽

Circular Cross Section ◽

Collagen Fibers ◽

Flexural Stiffness ◽

Corpus Spongiosum ◽

Tissue Stiffness ◽

Dasypus Novemcinctus ◽

Second Moment ◽

Corpora Cavernosa

Artificial inflation of corpora cavernosa from the nine-banded armadillo (Dasypus novemcinctus) showed that the expansion of the tunica albuginea during erection increases both components of flexural stiffness: the second moment of area and Young's modulus of elasticity. Folded tissue and crimped collagen fibers in the tunica albuginea permit its expansion during erection. As the tunica albuginea's radii increase in size, its second moment of area also increases. The crimped collagen fibers permit the flaccid tunica albuginea to expand to strains of 25 % longitudinally and 15 % circumferentially, after which tissue stiffness increases by 3–4 orders of magnitude. Radial expansion of the corpus cavernosum is limited by collagenous trabeculae. The trabeculae maintain the non-circular cross section of the corpus cavernosum during erection. Restricting expansion appears to protect the corpus spongiosum and urethra from occlusion, but has the side effect of reducing the potential flexural stiffness of the corpus cavernosum by reducing the second moment of area of the tunica albuginea.

Download Full-text

Lesion of the urethra and corpus spongiosum in the event of a misstep of the coitus without fracture of the corpus cavernosum: About one case

International Journal of Surgery Case Reports ◽

10.1016/j.ijscr.2021.105665 ◽

2021 ◽

Vol 80 ◽

pp. 105665

Author(s):

A. Ettanji ◽

A. Hannaoui ◽

Y. Bencherki ◽

M. Dakir ◽

A. Debbagh ◽

...

Keyword(s):

Corpus Cavernosum ◽

Corpus Spongiosum

Download Full-text

The Effect of a Surgically Created Shunt Between the Corpus Cavernosum Penis and Corpus Spongiosum Penis of Stallions on Erectile and Ejaculatory Function

Veterinary Surgery ◽

10.1053/jvet.1999.0021 ◽

1999 ◽

Vol 28 (1) ◽

pp. 21-24 ◽

Cited By ~ 8

Author(s):

Jim Schumacher ◽

Dickson D. Varner ◽

Mark R. Crabill ◽

Terry L. Blanchard

Keyword(s):

Corpus Cavernosum ◽

Corpus Spongiosum

Download Full-text

Severe Penile Curvature following Otis Urethrotomy

Case Reports in Medicine ◽

10.1155/2013/214082 ◽

2013 ◽

Vol 2013 ◽

pp. 1-3

Author(s):

Ersagun Karaguzel ◽

Metin Gur ◽

Dogan S. Tok ◽

İlke O. Kazaz ◽

Huseyin Eren ◽

...

Keyword(s):

Urethral Stricture ◽

Tunica Albuginea ◽

High Recurrence Rate ◽

Penile Curvature ◽

Corpus Spongiosum ◽

Tunica Vaginalis ◽

Internal Urethrotomy ◽

Urethral Catheterization ◽

Cold Knife

Urethral stricture is a common urological pathology with a high recurrence rate after treatment. Urethral manipulations are among its main causes. In this paper, urethral stricture developed secondary to urethral catheterization and was treated with cold-knife internal urethrotomy and the Otis urethrotomy procedure. During the follow-up period, severe ventral penile curvature preventing sexual intercourse developed due to fibrosis of the corpus spongiosum and tunica albuginea of the penis. This ventral penile curvature was corrected with a separate operation using a tunica vaginalis flap harvested from the left scrotum.

Download Full-text