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At least 19 recordsLinked to original sources
PubMed1979

Anatomy of the human seminal vesicles and ejaculatory ducts.

Anatomical dissections of the seminal vesicles and ejaculatory ducts were carried out in 20 autopsy and 10 operative specimens. Seminal vesiculography and casting were made. Vesiculography was conducted on 50 cases of schistosomal seminal vesiculitis. The seminal vesicles were of variable size and three main anatomical types. In normal seminal vesicles the ampullary vesicular angle was acute and the average length of the ejaculatory duct was 2.2 mm with an antero-medial concavity.

Adult↗
PubMed1979

Unusual granules in the ejaculatory duct of a Microphthalmus species (Polychaeta, Annelida).

The paired prominent ejaculatory ducts of the hermaphroditic polychaete Microphthalmus cf. listensis are surrounded by gland cells the processes of which penetrate the ducts themselves. These cells produce, in separate regions, two different types of spherical granules. Type I is composed of an electron dense and an electron lucent part. Type II granules contain a tubular filament that forms a single or double spiral in the periphery of a more or less unstructured electron dense material. Golgi vesicles give rise to this granule type. During the passage of sperm, these granules are obviously discharged into the lumen of the duct. Here they change form and probably dissolve. Their function is as yet unknown; capacitation of sperm is assumed.

Animals↗
PubMed1977

Cystic duplication of ejaculatory duct: case report.

A case of complex malformation of the genito-urinary tract, including cystic dilatation and partial duplication of the ejaculatory duct is reported. The lesion was visible on retrograde and anterograde vasovesiculography; its complete removal was possible using an abdominal approach.

Adult↗
PubMed1978

Oligospermia secondary to müllerian duct cyst. Simple surgical cure.

Fertility evaluation of a twenty-three-year-old male with severe oligospermia revealed a müllerian duct cyst that appeared to compress both ejaculatory ducts. Simple endoscopic unroofing of the cyst was followed by disappearance of the mass felt rectally, improvement of the radiographic appearance of the seminal tracts, and a return of the seminal analyses to well within fertile range. Müllerian duct cysts may be a rare cause of surgically correctable male infertility. Endoscopic unroofing of small müllerian duct cysts appears to be the treatment of choice in young males in whom there is concern for preserving fertility and potency.

Adult↗
PubMed1979

Age-dependent morphological changes in the seminal colliculus in male mice. Light and scanning electron microscopic study.

The developmental changes in the seminal colliculus of male mice were studied by light and scanning electron microscopy. The epithelium of the mouse seminal colliculus is transformed to the mature epithelium between 20 and 25 days of age, while the transformation of the remaining urethral wall occurred from 5 to 10 days of age. During the process of this epithelial transformation at the seminal colliculus unusual structures, including prominent epithelial proliferations and protrusions, were observed in the area adjacent to the ejaculatory duct openings and the ventral area of the upper medial region of the seminal colliculus in 15-day-old mice. In these unusual structures, three types of cells were recognized by their surface characteristics: cells which had distinct borders and ruffled cell surfaces with microridges; cells which had distinct borders and flat or slightly ruffled cell surfaces with many short microvilli, and small cells which had rounded cell surfaces with many long microvilli. In the remaining area of the seminal colliculus, two types of cells were distinguished: those which had flat or slightly rounded cell surfaces with many short microvilli and those cells with many long microvilli similar to the ones in the previously described area. In 25-day-old mice, the unusual protruding structures were not observed, but some cells with ruffled surfaces were still seen.

Age Factors↗
PubMed2026

Ultrastructural Insights Into the Reproductive Anatomy and Eggs of Cotton Pink Bollworm, Pectinophora gossypiella Saunders (Lepidoptera: Gelechiidae).

The pink bollworm, Pectinophora gossypiella Saunders is a major pest of cotton, notorious for its high reproductive potential and rapid evolution of resistance to Bacillus thuringiensis (Bt) toxins. Despite its economic significance, detailed knowledge of its reproductive anatomy and egg ultrastructure has remained limited, constraining the development of advanced molecular control strategies such as CRISPR/Cas9-based genome editing. The present study provides the first comprehensive characterization of the reproductive system and egg surface morphology of P. gossypiella using stereomicroscopy and scanning electron microscopy (SEM) techniques. The male reproductive system consists of fused, bean-shaped testes, seminal vesicles, duplex and simplex ejaculatory ducts, and paired accessory glands. The female reproductive system comprises paired ovaries with four polytrophic ovarioles per ovary, lateral and common oviducts, accessory glands, corpus bursae, and spermathecal glands. Eggs are oval, dorsoventrally flattened, exhibit a reticulated chorion with distinct micropylar and aeropylar regions. SEM images revealed 6-9 rosette cells encircling a circular micropylar plate, 14-19 first order and 17-23 s order ribs, and 250-291 polygonal surface cells. The structural features of P. gossypiella eggs reveal key sites for sperm entry, aeropylar respiration, and candidate zones for microinjection in gene editing applications. These findings establish a morphological baseline critical for optimizing embryo manipulation and ribonucleoprotein (RNP) delivery in lepidopteran genome editing. This study represents a pioneering effort to integrate classical egg morphology with molecular entomology, thereby advancing precision genetic interventions aimed at resistance management and population suppression in P. gossypiella.

Animals↗
PubMed1976

The morphology and innervation of subepithelial "striated" muscle cells in the male guinea-pig urethra.

Light and electron microscopic techniques have been used to determine the distribution, morphology and innervation of subepithelial striated muscle cells in the wall of the proximal urethra of the male guinea-pig. These cells form a continuous layer, immediately beneath the urethral epithelium extending from the bladder neck to the termination of the ejaculatory ducts into the proximal urethra. They differ from "typical" striated muscle fibres (as seen in the external urethral sphincter) by their small size, rich acetylcholinesterase content and the irregular arrangement of intracellular myofilaments and sarcoplasmic reticulum. In addition, motor end plate regions have not been observed on these striated cells when examined using a light microscopic histochemical technique. The cells are related to acetylcholinesterase positive nerves which run between them in a manner compatible with the occurrence of "en passant" synaptic interactions. Using electron microscopy, axonal varicosities containing small (50 nm diameter) agranular vesicles are encountered 50 nm from the striated cells; membrane specialisations characteristic om motor end plates have not been observed on the cells. The findings are discussed, particularly in relation to the distribution, unusual morphology and innervation of these subepithelial muscle cells.

Acetylcholinesterase↗
PubMed1977

Hyperplastic and metaplastic lesions in the reproductive tract of male rats induced by neonatal treatment with diethylstilbestrol.

Newborn male Wistar rats were castrated on the day of birth (= day 1) and treated daily with diethylstilbestrol (DES) from days 1 to 30; 1 microgram for the first 10 days of life, 2 microgram for the next 10 days and 4 microgram for the last 10 days. The animals were autopsied at 30, 90 and 270 days of age. The epithelium of the coagulating glands (CGs) and ejaculatory ducts (EDs) underwent metaplastic transformation in all DES-treated rats. These pathological changes were more marked with age. The most striking changes were found in the periurethral regions of the CGs and EDs and associated regions of the dorsal urethral wall. The normal transitional epithelial lining almost disappeared and large papillary epithelial outgrowths occurred near the opening of the EDs and CGs. This type of neoplastic change was most marked in the group of rats sacrificed at 9 months of age.

Animals↗
PubMed1978

Seminal vesicle cyst associated with ipsilateral renal agenesis.

Seminal vesicle cysts present at the age of high sexual activity. They manifest with symptoms of bladder irritation and pain on ejaculation. They arise because of congenital obstruction of ejaculatory duct. Diagnosis can be made by careful rectal examination supplemented by an intravenous urogram, cystogram, seminal vesiculogram, and cystourethroscopy. Surgical excision of the cyst is the definitive treatment. We present a case of right seminal vesicle cyst associated with ipsilateral renal agenesis, with a review of the pertinent literature.

Adult↗
PubMed1976

Altered bladder function and non-specific epididymitis.

Disorders of bladder function characterized by physiological urethral obstruction were identified in nearly 50% of patients with non-specific epididymitis and anatomically normaly urinary tracts. This association supports the concept that reflux of urine into the ejaculatory ducts may occur and produce epididymitis. The pathophysiology of retrograde urination is reviewed and the predisposing conditions are discussed.

Acute Disease↗
PubMed1978

The normal seminal vesiculogram.

Vasoseminal vesiculography was performed on 69 asymptomatic men. Considerable variability in the appearance of the normal adult seminal tract was seen. On the left, the normal seminal vesicle averaged 5.6 cm long, 2.0 cm wide, and 0.6 cm in luminal diameter; on the right, it averaged 5.0 cm long, 2.0 cm wide, and 0.6 cm in luminal diameter. The normal ejaculatory duct averaged 16.0 mm long and 1.5 mm wide on the left and the same on the right. Criteria for normality are presented and the radiographic techniques reviewed.

Adult↗
PubMed1979

Male reproductive tract sequelae of gonococcal and nongonococcal urethritis.

Gonorrhea is the most frequent bacterial infection as well as the most frequently reported venereal disease. Nongonococcal urethritis has approximately the same incidence as acute gonorrhea in cases reported by many venereal disease clinics. The relative epidemiology of the two diseases, as well as their acute and chronic manifestations in the male genital tract (urethritis, prostatitis, and epididymitis), will be briefly discussed. Resultant obstructions of the lower genitourinary tract of possible consequence to male fertility, such as urethral stricture disease and strictures of the ejaculatory ducts, are described in terms of anatomy, pathophysiology, and treatment. The postulated and demonstrable effects of infectious agents on seminal fluid and sperm are reviewed, with emphasis on the recent literature concerning Chlamydia and Mycoplasma.

Chlamydia trachomatis↗