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Biomedical subjects

H Toppozada

Publications and source records attributed to H Toppozada.

15 recordsLinked to original sources
PubMed1988

Haemolytic streptococcus infection of chronic maxillary sinusitis. An immunological study using the skin window test.

The SWT was performed on 30 patients with chronic haemolytic streptococcus maxillary sinusitis, and 5 controls with no streptococcus in their nose and throat. Foreign and patient's own organism were used as antigen. The lymphoblastic transformation was higher in control streptococcus free patients than in chronic maxillary sinusitis, more when using foreign than patient's own organism. The failure of cellular immune response as a contributory factor to chronicity of maxillary sinusitis is discussed. The possible value of prepared foreign streptococcus vaccine in prevention and treatment is mentioned.

Adolescent↗
PubMed1988

The human nasal mucosa in the menopause (a histochemical and electron microscopic study).

Ten menopausal females were studied. Histopathologically, the nasal mucosa was normal, except for the tunical glands which were reduced in number, more localized and showed hyperfunction. Histochemically, there was an increased activity of succinic dehydrogenase, alpha esterase, acid and alkaline phosphatase and choline esterase, indicating an increase in carbohydrate metabolism, lipid breakdown, phagocytic activity, vascularity, secretory activity and parasympathetic hyperactivity which may be responsible for these changes, reflecting the emotional disturbances common in the menopause. These changes were not related to the ovarian steroid hormones. The change in the PAS stain was due to the low estrogen blood level.

Esterases↗
PubMed1987

Experimental inoculation of Klebsiella rhinoscleromatis bacilli in albino mice.

72 albino mice were intranasally inoculated with Klebsiella rhinoscleromatis suspension with or without the addition of hog mucin. Scleroma-like lesions developed in their lungs more frequently with hog mucin. A liver affection was detected only in 1 animal. K. rhinoscleromatis organisms were recovered from the lung lesions. A possible potentiating effect of hog mucin is discussed.

Animals↗
PubMed1984

The human respiratory nasal mucosa in females using contraceptive pills. An ultramicroscopic and histochemical study.

The ultrastructure and histochemical changes in 25 females using contraceptive pills were studied. Fifteen pill-using females developing no nasal symptoms showed similar changes to those observed in symptom-free pregnant females. Ten pill-using females developing nasal symptoms showed squamous metaplasia, interepithelial oedema, glandular hyperplasia, histiocytic proliferation and fibrous tissue deposition, all attributed to the action of oestrogen. Their histochemical reactions were similar to those of chronic hypertrophic non-allergic rhinitis.

Adult↗
PubMed1982

The human respiratory nasal mucosa in pregnancy. An electron microscopic and histochemical study.

The ultrastructural and histochemical changes in the respiratory nasal mucosa of thirty pregnant females have been studied. Symptoms-free pregnant females, regardless of the duration of pregnancy, showed glandular hyperactivity, increased phagocytic activity, and increased amount of acid mucopolysaccharides in the ground substance. These changes have been suggested to be due to the rise in the levels of female sex hormones during pregnancy. Pregnant females developing nasal symptoms during pregnancy have been proved by electron microscopy and histochemically to be allergic in origin. This allergy, being not due to the hypersensitization of the patient's own sex hormones, may be due to any of the factors previously mentioned.

Adult↗
PubMed1981

The epithelium and chronic inflammatory cells in scleroma. (An electron microscopic study).

The ultrastructure of 15 cases or rhinoscleroma have been studied. The epithelium showed intercellular edema, a reaction to the polysaccharide coat of intact bacilli, passing through defects in the basal lamina and subsequently inviting polymorph migration. The transitional stages between normal and 'reactive' plasma cells to the formation of the Russell body and the Unna cell were demonstrated, thus supporting the theory of an intracellular formation of the Russell bodies.

Adolescent↗
PubMedDate not supplied

Chronic non-allergic hypertrophic rhinitis. A histochemical study.

The enzymatic changes in chronic hypertrophic rhinitis were studied in 14 patients. The cholinesterase content was increased in the subepithelium and stroma, denoting parasympathetic hyperactivity. Acid phosphatase was increased in the epithelium, subepithelium and around the glands, indicating increased shedding and phagocytic activity. Succinic dehydrogenase, alkaline phosphatase and alpha-esterase were increased in the mucous glands, denoting increase secretory activity, hence increased natural defence mechanism of the nasal mucosa.

Acid Phosphatase↗
PubMedDate not supplied

The tunica propria in rhinoscleroma. An electron microscopic study.

The ultrastructure in 15 cases of scleroma was studied. The vacuoles of the Mikulicz cells had a definite limiting membrane containing two types of granular material, "A" considered to be antibody, and "B" considered antigenic. Inside the vacuoles infrequent beaded filamentous crystalloid structures were seen, probably of a proteinaceous nature. An enzymatic etiology causing disruption of the limiting vacuolar membrane was considered. New ultrastructural characteristics of the 'early' Mikulicz cell are described. The capillaries occasionally showed subendothelial amyloid deposition. The seromucinous glands were infrequent but of normal character.

Adolescent↗
PubMedDate not supplied

The human respiratory nasal mucosa in nasal syphilis. A histochemical study.

The enzymatic changes in tertiary nasal syphilis were studied in 5 patients. The cholinesterase was increased in the subepithelium, around the glands and blood vessels, denoting parasympathetic hyperactivity. Acid phosphatase was increased in the epithelium, stromal histiocytes, around the glands and ducts, indicating increased phagocytotic activity. Alkaline phosphatase was increased in the capillary endothelium and periglandular stroma, denoting marked vascular changes. Succinic dehydrogenase, alkaline phosphatase, alpha esterase and PAS-alcian blue were diminished in the epithelium and glands, denoting diminished secretory activity, hence a diminished natural defence mechanism of the nasal mucosa. When serological tests are inconclusive, these findings become an important adjuvant to a final diagnosis.

Acid Phosphatase↗
PubMedDate not supplied

The human respiratory nasal mucosa in nasal syphilis. An ultra-microscopic study.

The fine structure of the human tertiary syphilitic nasal mucosa was studied in 5 patients. The epithelium showed variations in thickness, loss of cilia, irregular cell contours, widened intercellular spaces, rare goblet cells. The seromucinous glands were in three forms. The arterioles and capillaries varied in relation to the pathology of the surrounding tissue. The venules were least affected. The stroma was infiltrated by macrophages, plasma cells with some areas having excessive fibrosis and others partially necrotic. These findings were correlated to the histochemical reactions. Scattered Treponema pallidum were seen, demonstrating the blood-borne dissemination and the infective nasal secretions.

Adult↗