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A study of 3891 cases of mycoses in the tropics.

4103 cases suspected of mycoses were analysed as to sex, age and site of disease and 3891 were proved cases. This group formed 50% of total mycoses or 13-93% of all dermatoses recorded in the Government General Hospital, Madras, during the period of study. There were 66-26% adult female, 27-6% adult male and 6-14% were below 13 years. Dermatophytoses were found in 73-5%; the other common diseases were tinea versicolor (17-68%) and candidiasis (12-43%). Multiple sites of involvement or more than 1 disease in the same individual were mostly observed. The incidence of piedra (0-1%) and deep mycoses (0-156%) was very low. Mycetoma was the common disease (5/6) in deep mycoses. In dermatophytoses, tinea corporis (49-71%) and tinea cruris (47-85%) commonest; tinea axillaris (3-42%), tinea capitis (1-72%) and tinea barbae (1-29%) were less common. The incidence of tinea manuum, tinea pedis and tinea unguium was similar (4-97%-6-38%). High temperature and humidity were related to the higher incidence of tinea corporis, tinea cruris and tinea versicolor. Mainly children suffered from tinea capitis. All other mycoses were commonly found in adults between 2nd and 3rd decades. In all mycoses but candidiasis, female predominated. Cutaneous candidiasis was mainly a problem of housewives. Among the dermatophytes Trichophyton violaceum was predominant (33-7%) followed by T. rubrum (32-6%). Trichophyton schoenleinii and M. gypseum were rarely isolated. From mycetoma, Madurella mycetomii, Nocardia braziliensis, N. asteroides and Actinomadura spp. were isolated. Demonstration of Cryptococcus laurentii in 1 case is reported in this area for the first time.

Adolescent

[Clinical aspects of lung mycoses].

The clinical picture of pulmonary mycoses is described and discussed. The diagnosis of tropical pulmonary mycoses is--in contrast to the native mycoses--relatively simple with respective serological tests and intracutaneous reactions. For the diagnosis the differentiation of fungi or molds is of utmost importance.

Aspergillosis

Oral mycoses and their treatment.

Mycoses of the mouth and nearby areas can be caused by both yeasts and filamentous fungi. They may appear either independently or as part of a systemic infection. It is typical of many mycoses that they occur as a consequence of local factors operating in the mouth, or in patients debilitated by severe diseases. Yeasts that are part of the normal microbial flora of man, among them especially Candida species, are the most frequent causative agents. Some tropical or semitropical infections may occur in Scandinavia and Finland, but they are rare. Local therapy with antimycotics is often effective in acute infections, whereas some chronic ones may make systemic administration necessary. Some of these infections are treated surgically.

Acute Disease

[Immunodiffusion tests in gel media with the addition of polyethyleneglycol 6000 for the serodiagnosis of mycoses].

Different immunodiffusion techniques with and without the addition of polyetilenglycol 6000 (PEG), were studied to determine its effect on the sensitivity of these reactions. One hundred thirteen sera from patients who suffered or had suffered deep mycoses (paracoccidioidomycosis: 49, histoplasmosis: 25, aspergillosis: 25, candidiasis: 8 and coccidioidomycosis: 6) were examined by the quantitative Ouchterlony's immunodiffusion procedure. Regular medium and media with 2% and 4% PEG were used. Eighty two out of the one hundred thirteen sera were positive for the regular medium and 91 for the medium containing 2% of PEG; furthermore, an increase of 1 or 2 two fold dilutions in the titers was observed in 40% of the sera, for the later media. Twenty one sera from aspergillosis cases were examined by agarose gel immunoelectrophoresis, 80% had more precipitin bands in the medium with 2% of PEG. Thirty four serum samples of patients suffering aspergillosis, paracoccidioidomycosis and histoplasmosis were studied using the agarose electroosmophoresis with the secondary immunodiffusion test. An increase in the number of the anodic bands were observed in 55% while 64% presented more catodic bands, when the PEG medium was used. This results would indicate that the addition of 2% PEG 6000 to the regular medium improves the sensitivity of the immunodiffusion tests for mycoses.

Antigens

Therapy for deep mycoses: an introduction.

A classification of mycoses, depending upon the depth of penetration of the organism is discussed, as is the need to distinguish the true from the 'pseudo' mycoses. The development of antifungal agents is described from the first antibiotics to amphotericin B and 5-fluorocytosine. Attention is particularly focussed on the question of safety and effectiveness. Finally, it is stressed that successful antifungal treatment must depend upon determination of the exact pathological status of the patient and examples are given which relate to such clinical assessments.

Antifungal Agents

[Therapy of opportunistic mycoses].

The author presents the drugs that are available for the treatment of opportunistic mycoses: amphotericin B, nystatin, 5-fluorocytosine, miconazole and the newest imidazole derivative econazole. He presents his experience with econazole in 4 cases with deep mycoses. He speaks of the mode of application and the therapeutical limits of these products as well as of the favorable factors and the prophylactic measures to be taken.

Adult

[Generalized mycoses and their therapy].

After valuation of the increasing significance of the medical mycology as an interdisciplinary branch of science which concerns all clinicians the causes for the permanent increase of the endomycoses by yeasts and moulds are demonstrated. As secondary mycoses they need predisposing factors for manifestation which are to be taken into consideration more than up to now done in so-called risk patients. The pathomechanism is demonstrated with the help of the frequency of the lesion of organic systems in candidoses as well as in mould mycoses. Finally, the modern therapeutic possibilities are discussed.

Antifungal Agents

Superficial mycoses.

Twenty-five years ago many of the topical remedies for superficial mycoses were irritating, toxic, or allergenic. Total x-ray depilation of the scalp was the accepted mode of therapy for tinea capitis. The introduction of topical nystatin for candidiasis and tolnaftate for dermatophytosis were major advances, but tinea capitis, onychomycosis, and chronic tinea pedis still presented problems. Soon after its introduction in 1958, griseofulvin became the definitive form of therapy for all types of dermatophytosis and played a major role in abolishing large-scale epidemics of tinea capitis in some countries. Recently, haloprogin and the imidazole derivatives, miconazole and clotrimazole, which are topically active against dermatophytes and Candida albicans, have become available. Selective indicator media for isolating dermatophytes are useful diagnostic tools, but quicker methods of diagnosis which require little interpretation are still lacking. Epidemiologic studies in Vietnam again revealed the effects of climate and occlusion on the prevalence, incidence, and severity of superficial mycoses and led to renewed interest in host susceptibility, environment, and prevention of infections.

Administration, Topical

[Pulmonary mycoses; laboratory diagnosis, antimycotic therapy].

The microscopic, cultural and serological techniques for the diagnosis of European and non-European systemic mycoses involving the respiratory tract are reviewed. The antimicrobial, therapeutic and toxic properties of those antimycotic drugs are discussed, which can be used in the treatment of pulmonary mycoses. Data on biotransformation, kinetics and dosage are reported.

Administration, Topical

Intravenous and intrathecal miconazole therapy for systemic mycoses.

Ten patients with systemic mycoses, including five with fungal meningitis, were treated with intravenously or intrathecally administered miconazole, or both. Minimal inhibitory concentrations of miconazole for clinical isolates of Coccidioides immitis, Cryptococcus neoformans and Candida albicans were less than 0.6 microg per ml. Except for pruritus of variable degrees, the drug was well tolerated both intravenously and intrathecally by all patients. No measurable impairment of renal, hepatic or bone marrow function was observed in patients after 4(1/2) months of intravenous therapy. No hematological or biochemical abnormalities and no evidence of recurrent coccidioidal osteomyelitis were observed in 16 months of follow-up in our first patient treated with this drug. Miconazole is apparently an effective antifungal drug of low toxicity and is a potentially useful agent for treatment of human systemic mycoses.

Aged

Mycoses of the Sudan.

Mycoses in the Sudan are still significant and, as well as mycetoma, there are a number of fungal diseases: paranasal aspergillus granuloma, which came into eminence in 1966; actinomycosis; subcutaneous phycomycosis; systemic phycomycosis; post-operative opportunistic infection of the eye with Trichosporon cutaneum and rhinosporidiosis. Mycetoma and paranasal aspergillus granuloma are discussed in detail.

Aspergillosis

Superficial mycoses in a southern New Zealand district.

A total of 2,709 pathogenic fungi were isolated from 8,762 patients suspected as having mycotic disease, over an 8 year period in Christchurch, New Zealand. The district is climatically designated as temperate with average mean temperatures of 17 degrees C in summer and 8 degrees C in winter. The predominant species of fungi were relatively small in number with Trichophyton mentagrophytes var. interdigitals as the major pathogen. Fungi other than true dermatophytes, particularly Candida spp. and Malassezia furfur, were included to demonstrate the full spectrum of superficial mycoses presenting for diagnosis at the mycology clinic.

Adolescent