PubMed Health⌕ Search

Biomedical subjects

L F Montes

Publications and source records attributed to L F Montes.

At least 19 recordsLinked to original sources
PubMed1992

Folic acid and vitamin B12 in vitiligo: a nutritional approach.

When compared with the normal population, patients with vitiligo often showed diminished blood levels of folic acid. In a group of fifteen patients with vitiligo, folic acid levels were below normal in the serum of eleven patients, in the whole blood of five patients, and in the erythrocytes of six patients. Vitamin B12 serum levels were below normal in five of the fifteen patients. Ascorbic acid plasma levels were also lowered in four of the patients. In eight patients prolonged oral administration of folic acid with simultaneous parenteral treatment with vitamin B12 and oral ascorbic acid was followed by definite repigmentation without side effects.

Adolescent↗
PubMed1979

Immunohistochemical demonstration of basement membrane collagen in normal human skin and in psoriasis.

Antibodies prepared against the collagen C-chain derived from human placenta specifically strain the epidermal basement membrane of normal human skin as well as the basement membrane surrounding the skin appendages and capillaries. Using the antibodies, it was observed that all basement membranes in untreated psoriatic plaques appear fragmented and separted into several layers. The results suggest that psoriatic lesions are associated with a general loss of basement membrane integrity which may play a crucial role in the pathogenesis of the disease.

Antibody Specificity↗
PubMed1979

A tridimensional view of intradermal nevi as revealed by scanning electron microscopy.

When scanning electron microscopy (SEM) was applied to the study of intradermal nevi, interesting tridimensional features were recognized. The free surface of the lesions showed ruffled keratinized cells. "Normal" hairs as well as "corkscrew" hairs emerged from the follicular openings. Nevus cells were either round or elongated and surrounded by connective tissue fibers.

Adult↗
PubMed1979

Equine melanoma.

Explore the source record for details and available documents.

Animals↗
PubMed1979

Scanning electron microscopy of dermatofibromas.

The three-dimensional morphology of six dermatofibromas was studied by scanning electron microscopy. Hypertrophic epidermal ridges covered with large keratinized cells overlay each dermal lesion. Small collagenous fibers in the tumors contrasted with the bundles of much larger collagenous fibers in the normal dermis peripheral to the lesions.

Adult↗
PubMed1979

Low strength anthralin in psoriasis.

Anthralin in low concentrations (0.01%--0.03%) was applied in an ointment form once per day in the hospital to 130 psoriasis patients. The treatment program included also the use of UVB light, emollients and bath oil and an antihistamine. Clearing of psoriasis was achieved in all patients in an average time of 4 weeks. The involution of the lesions was carefully studied by correlated clinical observations, light microscopy, transmission electron microscopy (TEM) and scanning electron microscopy (SEM). Striking healing of the holes in the stratum corneum and of the gaps in the basement membrane occurred. Low strength anthralin, in addition to its effectiveness, did not produce irritation, staining or side-effects.

Adolescent↗
PubMed1978

The histopathology of diaper dermatitis. Historical review.

The precise pathogenesis of one of the most common cutaneous disorders, diaper dermatitis, has not yet been completely established, perhaps in part because relatively little histopathological knowledge has been obtained. This paper summarizes the available information in this field, mostly obtained by early investigators.

Diaper Rash↗
PubMed1978

Oral melanoma.

Explore the source record for details and available documents.

Aged↗
PubMed1978

Scleroderma.

Explore the source record for details and available documents.

Adult↗
PubMed1978

Ultrastructural basis for the assay of topical acne treatments. Transmission and scanning electron microscopy of untreated comedones.

After two decades of using systemic antibiotics as a main treatment for acne, emphasis is again being placed on topical agents. Thus, it is highly desirable to have a procedure whereby the activity of the various compounds can be evaluated by direct visualization. Scanning electron microscopy combined with transmission electron microscopy provide the tools for such in assay. This study describes the ultrastructure of untreated comedones and provides the baseline or control data necessary for testing topical treatments. Comedones obtained by punch biopsies or comedo extractors were processed for electron microscopy and studied with an ETEC Autoscan Scanning Electron Microscope and with Philips EM 300 and EM 301 Transmission Electron Microscopes. Microorganisms, keratinized cells, sebum, and hairs interact with each other to form the comedonal mass. Corynebacterium acnes and Pityrosporum ovale proliferate abundantly in close association with sebum and penetrate the keratinized cells. Fine structural details of bacteria and yeasts as well as features of host-microbial relationship have been elucidated.

Acne Vulgaris↗
PubMed1978

Subcutaneous fat necrosis of the newborn.

Subcutaneous fat necrosis of the newborn (SFNN) developed in a 1-week-old black boy. His mother had received numerous medications for eclampsia. Birth was by Caesarean section and complicated by meconium aspiration. There were numerous nodules over the back, buttocks and extremities that yielded a caseous-like material. Microscopically, these nodules showed crystallization and necrosis of the fat. Hypoglycemia, pneumonia, oliguria, thrombocytopenia, seizures and urinary infection were associated with the cutaneous problem and led to a fatal outcome 2 weeks after birth.

Adult↗
PubMed1978

Oral candidiasis.

Explore the source record for details and available documents.

Candidiasis, Oral↗