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J C Lavieri

Publications and source records attributed to J C Lavieri.

8 recordsLinked to original sources
PubMed1990

Extreme asthenozoospermia and chronic respiratory disease: a new variant of the immotile cilia syndrome.

Two patients suspected of suffering from ciliary dyskinesis were investigated. They consulted for primary infertility and chronic respiratory disease. Functional lung studies showed obstructive changes in one patient. Both had immotile sperm with short, thick and rigid tails. Ultrastructural studies of nasal biopsies showed abnormal cilia with almost complete lack of inner dynein arms (mean number of inner arms per axoneme 0.67 +/- 1.21 in patient 1 and 1.49 +/- 1.17 in patient 2, compared with normal values of 5.3 +/- 0.13). Other abnormalities included lack of parallel orientation of cilia and central translocation of microtubular doublets. Electron microscopy of sperm revealed hyperplasia of the fibrous sheath and axonemal disruption. This is the first report of an association of different anomalies in cilia and flagella leading to clinical manifestation of the immotile cilia syndrome. These findings emphasize the need for ultrastructural examination of respiratory cilia in men suffering from fibrous sheath alterations of sperm which so far have not been described in patients with the classical form of immotile cilia syndrome.

Adult↗
PubMed1987

Dysplasia of the fibrous sheath: an ultrastructural defect of human spermatozoa associated with sperm immotility and primary sterility.

A study of a group of five patients presenting with primary sterility and showing severe sperm immotility is presented. Most spermatozoa in these patients showed rigid, short, thick, and/or irregular tails and 95 to 100% were immotile. Electron-microscopy disclosed a common pattern of flagellar abnormalities. There was a dysplastic development of the fibrous sheath, which appeared hyperplastic and disorganized. The axoneme was either missing or grossly distorted. In a few instances, a normal flagellum could be identified. Similar alterations also were detected in maturing spermatids, suggesting that the described defect develops during spermiogenesis. Two of the five patients had recurrent bronchial and sinusal infections and bronchiectasis, suggesting the possible existence of an associated abnormality in respiratory cilia. The existence of a common ultrastructural defect affecting most spermatozoa, its presence in two brothers, and the possibility of association with immotile respiratory cilia point to the existence of a syndrome (namely the "dysplasia of the fibrous sheath") of possible familial transmission.

Adult↗
PubMedDate not supplied

L-dopa and oligozoospermia.

A clinical investigation of L-Dopa on idiopathic oligozoospermia is carried out. Thirty nine male oligozoospermic patients with primary sterility were divided in two groups. The first group of 25 patients was treated with 500 mg a day during two months. The second group of 14 patients received 750 mg a day for the same time. In the first group we find 14 improvements, 9 at the first month and 5 at the second month. In the second group 8 improvements were observed, 5 in the first month and 3 in the second months. It would seem that L-Dopa has a stimulatory effect on spermatogenesis possibly through hypophysis when it is administered at these dosis and for these periods of time, and it was also observed similar results for longer terms of treatment.

Adult↗