- A new Cosmocercoides species (Ascaridida: Cosmocercidae), C. wuyiensis n. sp., from the Asiatic frog Amolops wuyiensis (Amphibia: Anura). [Journal Article]
- JHJ Helminthol 2019 Jul 12; :1-8
- We identified and characterized a new cosmocercid nematode species, Cosmocercoides wuyiensis n. sp., through microscopic examination and sequencing of the partial small ribosomal RNA gene (18S rDNA),…
We identified and characterized a new cosmocercid nematode species, Cosmocercoides wuyiensis n. sp., through microscopic examination and sequencing of the partial small ribosomal RNA gene (18S rDNA), internal transcribed spacer (ITS) and mitochondrial cytochrome c oxidase subunit 1 (COI) genes. The new species was isolated from the intestine of the Asiatic frog Amolops wuyiensis Liu and Hu, 1975 captured from four localities of the Anhui province in south-east China. Among the 25 recorded species of the Cosmocercoides genus, the morphology of C. wuyiensis n. sp. is closest to that of C. kiliwai and C. malayensis, which were isolated from various Mexican frog and Malaysian lizard species, respectively. However, C. wuyiensis n. sp. displayed several distinguishing features, such as small size of the male body, two spicules of unequal lengths in the male, small gubernaculum, pre-, ad- and post-cloacal caudal rosette papillae in the ratio of 18-24:2:6 and simple papillae in the ratio of 14:multiple:4, circle and number of punctation in each rosette at 1:11-16, sharply conical tail-end and the presence of lateral alae and somatic papillae in both sexes. BLAST and the phylogenetic analyses of the 18S rDNA and ITS sequences indicated that C. wuyiensis n. sp. belonged to the genus Cosmocercoides, while that of the COI gene sequence of C. wuyiensis n. sp. showed 16.36% nucleotide divergence with C. pulcher and 47.99% nucleotide divergence with C. qingtianensis. The morphological and molecular characterization of C. wuyiensis n. sp. provides new taxonomic data for this genus.
- Plasma concentration of MMP-1 and MMP-2 in boys with cryptorchidism and its lack of correlation with INSL3 and inhibin B. [Journal Article]
- SJScand J Clin Lab Invest 2019 Jul 11; :1-7
- The matrix metalloproteinases are enzymes capable of remodeling of extracellular matrix, and modulate the behavior of cells. Maturation of gubernaculum and spermatogenesis demand proper equilibrium o…
The matrix metalloproteinases are enzymes capable of remodeling of extracellular matrix, and modulate the behavior of cells. Maturation of gubernaculum and spermatogenesis demand proper equilibrium of metalloproteinases and their inhibitors. The aim of this survey was to investigate the levels of matrix metalloproteinase type 1 (MMP-1) and matrix metalloproteinase type 2 (MMP-2) in the plasma of children with unilateral cryptorchidism along with levels of Insulin-like Peptide 3 (INSL3) and inhibin B. INSL3 have a role in gubernaculum development. Inhibin B is produced by Sertoli cells, and its levels reflect the status of the testis germinative epithelium. Fifty boys with an undescended testicle, aged 1-4 years (median = 2.4 years) were enrolled into the study. Fifty boys with inguinal hernia aged 1-4 years, served as controls (median age = 2.1 years). Investigators assessed the MMP-1 and MMP-2 concentrations using Surface Plasmon Resonance Imaging. The levels of INSL-3 and inhibin B were assessed using commercial enzyme-linked immunosorbent assay ELISA. The median concentration of MMP-1 and MMP-2 in the blood plasma of patients with unilateral cryptorchidism, was nearly 2-folds higher than in controls. The great area under the ROC curve with the cut off value of 0.865 for MMP-1, and 0.819 for MMP-2, indicates the high clinical sensitivity and specificity of the test of plasma levels of MMP-1 and MMP-2 for boys with cryptorchidism. The increased plasma levels of MMP-1 and MMP-2, probably reflect the level of apoptosis of the germ cells in undescended testicles, in response to the heat stress during the period of prepubertal testis development. In the group of cryptorchid boys, we found slightly lower concentrations of INSL3, without statistical significance and without correlation with MMP-1 and MMP-2 levels. There were no significant differences in the levels of inhibin B in the group of boys with cryptorchidism and boys with inguinal hernia and it also did not correlate with MMP-1 and MMP-2 concentrations.
- Meteterakis asansolensis sp. nov. (Nematoda: Heterakidae) in Duttaphrynus melanostictus (Schneider, 1899) (Amphibia: Anura: Bufonidae) from Asansol coalfield area, Paschim Bardhaman, West Bengal, India. [Journal Article]
- JPJ Parasit Dis 2019; 43(2):229-233
- Meteterakis asansolensis sp. nov. (Nematoda: Heterakidae) recovered from the rectum of Asian common toad, Duttaphrynus melanostictus (Schneider, 1899), collected from Asansol coalfield area in Paschi…
Meteterakis asansolensis sp. nov. (Nematoda: Heterakidae) recovered from the rectum of Asian common toad, Duttaphrynus melanostictus (Schneider, 1899), collected from Asansol coalfield area in Paschim Bardhaman district of West Bengal, India, is described and illustrated. This species is characterised by the presence of a precloacal sucker, a gubernaculum and two equal and similar spicules (0.31-0.32 mm in length). This species differs from other reported species of the Oriental region by morphometrical ranges of measurements of males (3.09-3.54 mm) and females (4.60-4.72 mm) and the number and the distribution pattern of caudal papillae in males which includes 5 pairs precloacal, 1 pair adcloacal and 5 pairs postcloacal in position.
- Reappraising the exteriorization of the mammalian testes through evolutionary physiology. [Review]
- CICommun Integr Biol 2019; 12(1):38-54
- A number of theories have been proposed to explain the exteriorization of the testicles in most mammalian species. None of these provide a consistent account for the wide variety of testicular locati…
A number of theories have been proposed to explain the exteriorization of the testicles in most mammalian species. None of these provide a consistent account for the wide variety of testicular locations found across the animal kingdom. It is proposed that testicular location is the result of coordinate action of testicular tissue ecologies to sustain preferential states of homeostatic equipoise throughout evolutionary development in response to the advent of endothermy.
- Morphological and Genetic Characterization of the Poorly Known Species Subulura chinensis Schwartz, 1926 (Nematoda: Ascaridida) from Athene noctua (Scopoli) (Strigiformes: Strigidae). [Journal Article]
- APActa Parasitol 2019 May 08
- Subulura chinensis Schwartz, 1926 is a hitherto poorly known nematode species. The morphology of S. chinensis has not been sufficiently well described. In addition, the molecular data from species of…
Subulura chinensis Schwartz, 1926 is a hitherto poorly known nematode species. The morphology of S. chinensis has not been sufficiently well described. In addition, the molecular data from species of the Subuluroidea are extremely limited.
- Gubernaculum Sparing Laparoscopic Orchiopexy in Cryptorchidism with Ipsilateral Congenital Absence of the Vas Deferens: Unique Outcome. [Case Reports]
- CRCase Rep Urol 2019; 2019:7408412
- Congenital absence of the vas deferens (CAVD) is an uncommon anomaly that occurs in up to 1% of the male population. It can be associated with various other anomalies, including cryptorchidism and re…
Congenital absence of the vas deferens (CAVD) is an uncommon anomaly that occurs in up to 1% of the male population. It can be associated with various other anomalies, including cryptorchidism and renal anomalies, such as renal agenesis. We here present a case of cryptorchidism with ipsilateral congenital absence of the vas deferens and renal agenesis and used the Stephen-Fowler technique for Orchiopexy depending on gubernacular vessels. A 7-month-old boy was referred to our center with left grade 2 hydronephrosis, right renal agenesis, and right impalpable, undescended testis. Examination under anesthesia and laparoscopic exploration with staged Stephen-Fowler orchiopexy were performed. The patient was followed up at 3, 6, and 12 months and had an excellent outcome. Cryptorchidism with congenital ipsilateral absence of the vas deferens and renal agenesis is a rare diagnostic entity. Our case supports the suggested theory that the gubernacular vessels can increase the blood supply to the testis, although further studies are needed to confirm this hypothesis.
- Redescription of Dichelyne (Cucullanellus) Dichelyneformis (Nematoda: Cucullanidae) and Description of a New Congeneric Species in Eleginops maclovinus (Pisces: Eleginopsidae) Collected in the Bay of Corral, Chile. [Journal Article]
- JPJ Parasitol 2019; 105(2):263-270
- Dichelyne (Cucullanellus) dichelyneformis (Szidat, 1950) Petter, 1974 , was collected in the intestine of the rock cod, Eleginops maclovinus, in the Bay of Corral, Chile, and redescribed based on lig…
Dichelyne (Cucullanellus) dichelyneformis (Szidat, 1950) Petter, 1974 , was collected in the intestine of the rock cod, Eleginops maclovinus, in the Bay of Corral, Chile, and redescribed based on light and scanning electron microscopy. The correct arrangement of caudal papillae and post deirids, the shape of gubernaculum, and the morphology and number of denticles surrounding the oral opening are described for the first time. These characteristics along with the excretory pore position, size of spicules, and presence of a nodular thickening near the distal end of the spicules differentiate D. (C.) dichelyneformis from the other congeners reported in South America and in the Antarctic. The new congeneric species found in E. maclovinus differs from D. (C.) dichelyneformis based on the larger males, larger and more numerous denticles with a smooth surface, weakly developed sclerotized plates in esophastome, excretory pore and deirids posterior to nerve ring, shorter gubernaculum and spicules with no thickening on their distal region, lower spicules/body length ratio (10.4-15.1%), and a papilla-like phasmids closer to pairs 8 and 10.
- Human chorionic gonadotrophin hormone for treatment of congenital undescended testis: Anatomical barriers to its success. [Journal Article]
- JPJ Pediatr Surg 2019 Feb 23
- CONCLUSIONS: Treatment of congenital undescended testis with human chorionic gonadotrophin hormone had low success rates. Anatomical abnormalities in the congenital undescended testis might contribute to this treatment failure.
- Close relationship between the short round ligament and the ovarian prolapsed inguinal hernia in female infants. [Journal Article]
- PSPediatr Surg Int 2019; 35(5):625-629
- CONCLUSIONS: The round ligament, which is the female gubernaculum in the fetus, was shorter in the open PV than in the closed PV in younger girls. The short round ligament results in the ovarian prolapsed hernia.
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- Editorial Comment. [Comment]
- JUJ Urol 2019; 201(2):385