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Biomedical subjects

J Samson

Publications and source records attributed to J Samson.

53 records · Page 3Linked to original sources
PubMed1982

[Intramandibular salivary inclusions and ectopia (author's transl)].

Intramandibular salivary inclusions and ectopia concern the main salivary glands. The most common takes the form of a regular well-defined lacunar appearance situated at the mandibular angle or molar region. This asymptomatic inclusions is in fact only the imprint of a lobule of the sub-mandibular gland on the mandible. More rarely, the parotid gland and sublingual gland may also be responsible for a lacunar radiological appearance in the mandible. By contrast, a few ectopic glandular lobules of the sublingual may be completely induced at the site of the mandibular symphsis. Salivary inclusions and ectopia thus result from two different aerio-pathogenic mechanisms.

Choristoma↗
PubMed1981

Neutrophil function in Bartter's syndrome.

Bartter's syndrome is a state associated with hyperprostaglandinemia and high urinary excretion of prostaglandin derivatives. Because of numerous reports on prostaglandins acting as local modulators of the immune system, we have studied parameters of phagocytic function and of cellular and humoral immunity in four patients with this disease. An augmentation in chemotaxis was identified in Bartter's syndrome neutrophils. Despite some minor deviations in other parameters measured, no other gross derangement in immune function could be identified.

Bartter Syndrome↗
PubMed1981

[Mucoepidermoid tumor of the mandible (author's transl)].

The diagnosis of a mucoepidermoid tumor of the mandible has been made by pathological examination. This asymptomatic tumor was discovered on a routine radiographic film. Our 44 years old male patient was treated by surgical means. We have found 62 cases in the literature; intra-osseous cases of mucoepidermoid tumor seem to be rather scarce. Let us recall the presence of salivary glands in the mandible, a possible explanation of the occurrence of intra-osseous glandular tumor.

Adult↗
PubMed1979

[Early detection of pemphigus vulgaris: role of the dentist].

Means to detect pemphigus vulgaris at an early stage are described. Its grave evolution in absence of treatment makes an early diagnosis imperative. The first signs are frequently localized in the oral mucosa and sometimes the disease remains confined to this mucosa only. Efficient and early therapy may favourably influence the course of disease, and the dentist is in a prime position to detect the characteristic lesions.

Acantholysis↗
PubMedDate not supplied

[Psychogenic oral paresthesia].

Psychogenic oral paresthesia represent a proteiform condition, more and more frequent. The failure to recognize it can lead to unjustified investigations or/and procedures. These manifestations are secondary to a psychic problem which varies in severity. In most cases, the establishment of a trust relationship, explanations to the patient and eventually a psychotherapy are sufficient to eliminate the symptoms. In severe cases, a psychotherapy or a psychiatric treatment are almost always necessary.

Adult↗
PubMedDate not supplied

Corneal wound healing in monkeys 18 months after excimer laser photorefractive keratectomy.

Excimer laser keratomileusis (photorefractive keratectomy, direct corneal ablation) for myopic corrections of 2.00 diopters (n = 1), 4.00 D (n = 4), and 8.00 D (n = 3) was performed on eight corneas of four Rhesus monkeys. All animals were followed for 18 months. The ablations healed normally and no epithelial erosions occurred. Serial slit-lamp microscope examinations revealed that a variable amount of corneal haze developed in all animals; this haze progressively faded during the follow-up period. Histopathology revealed an epithelium of normal thickness, basement membrane abnormalities, increased number and activity of stromal keratocytes, and a variable amount of newly secreted extracellular matrix in the anterior stroma. These findings suggest that excimer laser keratomileusis induces a mild wound healing response in the anterior cornea which displays considerable individual variability and persists up to 18 months.

Animals↗
PubMedDate not supplied

[Chronic granulomatous disease (CGD): in vitro enhancement of bactericidal activity of CGD phagocytes by rifampicin].

In a series of 29 experiments on CGD patients, we have studied the in vitro bactericidal capacity of normal and CGD phagocytes against penicillin, streptomycin and rifampicin sensitive Staphylococcus aureus. The bactericidal activity of phagogyte preparations was tested at different intervals during a 21 hour incubation. The CGD-phagocyte bactericidy peaks after 90 min when penicillin is used; in contrast, a significant enhancement of the bactericidal activity is noted with rifampicin and best noted after 21 hours of incubation. To elucidate the mode of action of this antibiotic, a rifampicin resistant S. aureus was used in a series of experiments; The results point to a mixt type of action: antimicrobial and metabolic.

Blood Bactericidal Activity↗