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Biomedical subjects

T Maros

Publications and source records attributed to T Maros.

At least 19 recordsLinked to original sources
PubMed1997

Why the internal mammary artery is an ideal graft for myocardial revascularisation? (an experimental model with omentoplasty).

Ten dogs underwent coronary artery bypass grafting through a right thoracotomy. Free internal mammary artery grafts (IMA) was used for aortocoronary bypass to right coronary artery (RCA) without temporary cardiopulmonary bypass. In upper median laparotomy approach, mobilization and lengthening of the omentum was performed through the retrosternal part of the diaphragm. An epiploic muff was effectuated surrounding the IMA graft. After three months the animals were sacrificed and the grafts folded by omentum were used for microscopical study. The histological evaluation has shown that the omentum has formed a new adventitia around the graft. In the new-formed adventitia, newly formed vessels can be found and these are grouped around the adventitia-media border zone, very rarely penetrating into the external layer of the media. This graft-omentoplasty offer a good experimental model which facilitates to investigate in vivo the blood supply needed by free IMA grafts through the adventitia in experimental conditions. The biological mechanism of angiogenesis in graft wall can be investigate as well.

Animals↗
PubMed1981

[The anatomic variants of the lingual nerve in human (author's transl)].

The authors studied the lingual nerve in 24 human heads through medial discovering after cutting the heads in the mediosagittal plan. In the 48 heads halved, plexiform roots of the lingual nerve were observed in 8.3%, while in 4.1% the origin of the nerve was formed by 2 roots. In 25%, between the lingual and inferior alveolar nerves connection bridges were found, represented either by only one nervous branch or 2-3 branches. The inferior and of the connection branches presents a similar structure to that of the vegetative ganglion. In 12.5% there were displayed 2 nervous branches destined to the lateral and medial pterygoid muscle and palatoglossal muscle. In 33.3%, one of the terminal branches of the mylohyoid nerve after perforating the homonymous muscle, anastomoses with the lingual nerve in the lateral sulcus of the tongue (Sulcus lateralis linguae) achieving, in the author's opinion, the "mylohyoid or sublingual curl". Considering these facts, in the author's opinion, the mylohyoid nerve is a mixed nerve which transmits, trough the anastomotic branch, the sensitive and postganglionar vegetative fibres to the lingual nerve.

Adult↗
PubMed1981

[Anatomical variations of the nervus alveolaris inferior and their importance for the practice (author's transl)].

The authors have studied the anatomic variations of the inferior alveolar nerve (N. alveolaris inferior) in 18 human heads. The mandibular nerve being free by medial abord. At about half of the studied cases the M. pterygoideus medialis presents a widened insertion extending on the posterior border of the Ramus mandibulae. Before entering into the mandibular channel the inferior alveolar nerve separated from the next elements by expansion of "aponévrose interptérygoidienne". At this level gets sympathic branches from the plexus caroticus externus et internus, making a plexiform structure interfering sometimes a vegetative ganglion formation. At 16.6% of the cases between the alveolar inferior nerve and the lingual nerve are established connection bridges more or less developed. They have an asymetric aspect. There were observed evident connections between the inferior alveolar nerve and the auriculotemporal nerve taking a mono- or pluriradicular form. The mylohyoidian nerve on his homonymous way gives 2--3 sensitive, or vegetative branches to the bone. Practically speaking are important the branches coming from the precanalicular portion of n. alveolaris inferior perforating the periost and penetrating independently in to mandibula through separated vents. These results are practically useful in Stomatological technique explaining from an anatomically point of view the inefficiency of mandibular anaesthesia in some cases although it is correctly applied.

Humans↗
PubMed1975

Effects of the liver homogenate obtained following partial hepatectomy on cirrhosis of the liver.

The authors studied the influence of liver homogenates as a whole and collected at various intervals after partial hepatectomy on cirrhosis of the liver. The lyophilized homogenates were administered over a period of 6 weeks to various groups of albino rats pretreated with CCl4 for a period of 6 months. The normal liver homogenate did not influence the histological and biochemical picture of the hepatocirrhosis. The material collected 48 hours after partial hepatectomy causes a moderate stimulation of the mechanisms of parenchymatous regeneration. 7 days after partial hepatectomy (in the postmitotic period) the hepatic regenerate shows a biological effect with lysis of collagen fibres and protection of parenchymatous cells.

Alanine Transaminase↗
PubMed1975

[Lockjaw in progressive myositis ossificans].

Frequency, symptomatology, course and therapy of myositis ossificans progressiva are described by means of literature references and personal observation in a patient. The patient was born in 1935 and the disease manifested itself for the first time in 1956 in the right sternocleidomastoid muscle. Despite surgery total trismus could not be prevented and later-on muscles and connective tissue of other areas ossified, too.

Adult↗
PubMed1975

Spontaneous reversibility of advanced toxic liver cirrhosis.

The spontaneous restoration of liver cirrhosis induced by 6 and 9 month CC14 treatment has been studied. The OH-proline content of the liver stroma, the DNA content of the parenchyma, and the Co/DNA ratio were determined. Observations lasted for 4 months after completion of treatment. Cirrhosis developed after 6 month, CC14 administration was reversible in 3--4 months after the discontinuation of treatment; the normal stroma parenchyma ration had gradually normalized. Nine month treatment exhausted the capacity of the stroma for spontaneous recovery and the parenchyma regenerated to a lesser extent. Fibrosis remained practically irreversible 4 months after CC14 administration.

Animals↗