Spyros Antypas

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Purpose: Our objective was to apply ooplasmic round spermatid nuclear injections for the treatment of nonobstructive azoospermia. Materials: Participants were nine azoospermic men who had previously undergone diagnostic testicular biopsy. Spermatogenetic arrest was diagnosed at the round spermatid stage (n=6) or primary spermatocyte stage (n=3). A second(More)
We applied the technique of ooplasmic elongating spermatid injection to the treatment of non-obstructive azoospermia. Mature oocytes were injected with elongating spermatids isolated from testicular biopsy material obtained from 13 non-obstructed azoospermic men. Seventy-three oocytes were successfully injected with elongating spermatids and were then(More)
Annular pancreas is the rare congenital anomaly where the pancreas forms a full or incomplete ring around the second segment of the duodenum, causing various degrees of stenosis or atresia. It is estimated that it appears in 1 out of 12 000-15 000 births of living neonates and until now, in the literature, only 6 cases have been reported among individuals(More)
The aim of this family-based study was to investigate the potential association/genetic linkage of the (TAAAA)n polymorphism of sex hormone-binding globulin gene proximal promoter with testicular maldescent (TMD). Genomic DNA was extracted from the peripheral blood of 487 subjects (174 index families): (i) 180 children with all phenotypes of TMD, (ii) 307(More)
The aim of the study was to investigate the hypothesis that Y chromosome microdeletions are directly implicated in testicular maldescent. Genomic DNA was extracted from the peripheral blood of 292 subjects. This population consisted of (i) 180 children with all phenotypes of isolated (non-syndromic) testicular maldescent from 174 index families, (ii)(More)
Spontaneous pneumomediastinum (SPM) is an uncommon disease defined as a non-traumatic presence of free air in the mediastinum, without underlying disease. We present a 13-year- old boy who was previously in a perfect health, who was presented with subcutaneous cervical emphysema, dysphagia, chest and neck pain. The chest roentgenogram revealed the presence(More)
To examine seasonal trends of cryptorchidism in Greece, 583 males with true isolated cryptorchidism were analyzed. All 208 912 live-born boys born during the same period were used as a comparison group. Seasonality by month of birth was evaluated using both Edwards' model with adjusted frequencies and exact theta(i), and Walter-Elwood method with exact(More)
268 Tech Coloproctol (2008) 12:267–271 shows that mobilization of the low rectum after a long course of preoperative chemo-radiotherapy might sometimes carry a major surgical difficulty. Extreme fibrosis of the surrounding tissues can happen as an overreaction to radiation therapy in some patients. This fibrosis may force to a loss of the TME plan and may(More)
OBJECTIVE To evaluate the effects of cigarette smoking on the ability of seminal plasma (SP) to maintain sperm viability. DESIGN Clinical randomized study. Spermatozoa from cigarette smoking or nonsmoking subjects were reconstituted in SP from smokers and nonsmokers and in modified Ham's F-10 medium, followed by sperm quality assessment during a 48-hour(More)
PURPOSE An experimental study was undertaken in order to estimate the angiogenic activity in different free grafts and pedicle flap in urethral reconstruction in an animal model. METHODS Twenty-eight white New Zealand rabbits were randomly divided into five groups (O, A, B, C and D). A ventral urethral defect was created in all groups. In the group O, (n(More)