Biomedical subjects
Publications and source records attributed to J L Castellanos.
The authors report a case of Pasteurella multocida infection in a total knee arthroplasty as a result of a dog bite. The patient was treated with one-stage reimplantation of a new prosthesis and with intravenous antibiotics, resulting in complete relief of symptoms with no evidence of recurrence of infection after 24 months.
In stomatology, salivary function and dysfunction are seldom discussed in their biological and psychological aspects; too often, the terms are mistakenly used as synonyms. The importance of identifying these conditions not only involves direct therapeutic implications, as it can additionally influence global and systemic buccal conditions, as well as modify tissue response and psychological adaptation to dental, periodontal and prothesis therapy as currently performed in daily practice. The physiopathogenesis, etiology, the local and general clinical repercussions, as well as those on behavior, the methods of clinical evaluation and treatment/handling of hyposalivation and xerostoma, are presented and discussed.
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The histologic characteristics and clinical features of six new cases of ACT of the minor salivary glands are reported. These neoplasms accounted for 3.8% of all the minor salivary gland tumors examined by our service. Three cell types were identified: acinar, vacuolated, and intercalated duct-cell. Those cell types were organized in three growth patterns: solid, papillary, and microcystic. Tumor cells were PAS positive both before and after treatment with diastase. Occasionally, they were slightly positive to mucicarmine staining. According to our study, ACT occurs in adult life, apparently without sex preference. Asymptomatic swelling was the most frequent presenting symptom; however, on occasion pain and ill-fitting dentures were reported. Most of the tumors in were described as fixed soft tissue masses, less than 1.5 cm in diameter. No recurrences or metastases were seen in any of the patients for a mean period of four years. Simple surgical removal was the therapeutic measure used in all cases.
Consumption of fruits from the genus Karwinskia may cause a flaccid paralysis that can be confused with the Guillan-Barré syndrome or poliomyelitis. Paralysis resulting from consumption of such fruit has emerged as a public health problem in certain regions of Mexico. The purpose of this study was to investigate geographical factors associated with this intoxication in the 72 cases reported in Mexico from 1990 to 1994. Location of cases coincides with the distribution of the 11 reported species of Karwinskia in the country. The majority of reported cases were related to the consumption of K. humboldtiana, with a smaller number involving K. mollis, K. parvifolia, K. johnstonii, and K. rzedowskii. Most cases were located in regions with dry climates (79.2%), arid vegetation (41. 7%), and altitudes under 1,000 meters above sea level (54.1%). The study establishes three different risk areas: the Balsas river region in the southwestern central part of the country; the arid northern area; and the arid and dry central area. Cases were from rural communities with low levels of schooling and poor socioeconomic conditions.
To our Knowledge, this is the first work in a number population (higher than 500 sample WHO) that is carried out in our country about lesions in the Oral Mucosa. The advantages in this Kind of studies are recognized particularly in the fields of academic, research and services. This work presents the first view of a permanent research project of Oral Mucosa Lesions at the admission clinic, School of Dentistry, Universidad del Bajío. The findings are from the evaluation of 7,297 patients, 15 years or older, that seek dental services between January 1982 and June 1989 (7.5 years). The lack of national data and the oldest population samples in other countries studies stopped wider evaluations, even though the study purpose was not affected, it was possible to offer qualitative data in the respect of prevalecence, variety and etiopathogenesis of those type of pathosis in the Oral Mucosa. The general prevalecence in the group was approximately 13%, identifying lesions more frequently in males, but higher variety in females. Report on 40 different entities, presented in general according to a descent order of prevalencece and reagrouped by sex and pathology. In half the lesions was possible to identify as the cause, acute and cronic traumatic agents; The infectious associations were also very frequent. Those last observations are of high relevance concerning the prevention of Oral Mucosa lesions.
The present study was realized to determine the frequency variety and concentration of old and new health disease in patients attending a school of Dentistry, classification to an age variable. This paper ends a series of articles about estomatological changes associated to an aging process. The main findings indicate that when patients grow older an increment in variety and number of pathological personal background. The results suggest a very well defined difference in the prevalence and concentration among subjects over and under 50 years. The risk factor was 1:1 in patients older than that. The importance of considering the Clinical history in patients as a determining factor in the global dental evaluation, for the decision. making in treatment planning.
A description is made of occlusal, articular and craniomandibular alterations that become present in the advance adult and old age and in some way they induce to the implementation of preventive and curative aspects from early stages or specific in posterior ages.
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