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Biomedical subjects

G Mascia

Publications and source records attributed to G Mascia.

10 recordsLinked to original sources
PubMed2000

Autoradiographic distribution of peripheral benzodiazepine receptors in the retina of the albino rabbit, Lepus cunicula.

The distribution of peripheral benzodiazepine receptors (PBRs) in the retina of the albino rabbit, Lepus cunicula, was studied by autoradiography using [3H]-PK11195, a isoquinoline carboxamide, as a tracer. Autoradiograms obtained by directly placing the slides containing the retina sections on tritium-sensitive film provide evidence for the presence of PBRs in rabbit retina. Furthermore, the dark field examination of photomicrographs taken from autoradiograms showed two dense horizontal bands corresponding to the outer and inner photoreceptor segments, and to the inner plexiform layer. The retinal regions where [3H]-PK11195 binding was more dense are rich in mitochondria, suggesting that as in other neuronal tissues, retinal PBRs are involved in the mitochondrial activity.

Animals↗
PubMed1999

One-year experience with a new expanded polytetrafluoroethylene vascular graft for hemodialysis.

Hemodialysis access achieved through a prosthetic vascular graft has become more popular, especially in diabetic and older patients and those who have had several unsuccessful surgical accesses. From January to December 1996, we implanted a newly available expanded polytetrafluoroethylene (ePTFE) graft (DIASTAT Vascular Access Graft) that allows early cannulation in 18 patients (11 men and 7 women; mean age +/- SD, 63.7 +/- 11 years). Thirteen of these patients had at least one failed vascular access. All grafts were cannulated for dialysis within 7 days of implantation, with flow rates > or = 300 ml/min. The time to hemostasis after the first cannulation ranged from 2 to 4 min. The primary patency rate at one year was 56%. Four grafts developed thrombosis requiring surgical intervention; three were salvaged and one was removed. The one-year assisted or cumulative patency rate was 72%. One patient had persistent bleeding requiring graft revision immediately after surgery. The bleeding stopped and its origin was not determined. There were no graft infections or hematomas. Because of the early cannulation possible with the DIASTAT graft, as well as the lesser time to hemostasis than that generally achieved with standard ePTFE grafts, this prosthesis is a good alternative to autogenous access construction.

Aged↗
PubMed1980

[Malignant gastric lymphomas].

Primary malignant lymphomas of the stomach are the most frequent non-epithelial neoplasms of this organ (3%). Their onset and their development are insidious and a proved diagnosis is established only by laparatomy and biopsy specimens. In the absence of proved distant spread, surgical treatment in conjunction with radiation therapy and chemotherapy, gives very good results, with a five years survival rate of 50-70%, even in the presence of regional metastases, and sometimes a final cure is observed.

Adult↗
PubMed1979

[Unusual case of pericecal internal hernia of the retrocecal fossa].

Prompted by actual observation of one case, the authors call attention to this rare form of pericecal hernia. After a brief recall of pertinent anatomical features, they emphasize the rarity of this of hernia and the difficulty of diagnosing it preoperatively on the basis of clinical semiotics and radiological findings. In the last part of their paper the authors review the possible complications of this disorders and discuss therapeutic methods for its correction.

Aged↗