Biomedical subjects

S Tahan

Publications and source records attributed to S Tahan.

7 recordsLinked to original sources

PubMed2003

Dietary fiber, energy intake and nutritional status during the treatment of children with chronic constipation.

The present prospective study was carried out to determine dietary fiber and energy intake and nutritional status of children during the treatment of chronic constipation. Twenty-five patients aged 2 to 12 years with chronic constipation were submitted to clinical evaluation, assessment of dietary patterns, and anthropometry before and after 45 and 90 days of treatment. The treatment of chronic constipation included rectal disimpaction, ingestion of mineral oil and diet therapy. The standardized diet prescribed consisted of regular food without a fiber supplement and met the nutrient requirements according to the recommended daily allowance. The fiber content was 9.0 to 11.9 g for patients aged less than 6 years and 12.0 to 18.0 g for patients older than 6 years. Sixteen patients completed the 90-day follow-up and all presented clinical improvement. The anthropometric variables did not change, except midarm circumference and triceps skinfold thickness which were significantly increased. Statistically significant increases were also found in percent calorie intake adequacy in terms of recommended daily allowance (55.5 to 76.5% on day 45 and to 68.5% on day 90; P = 0.047). Percent adequacy of minimum recommended daily intake of dietary fiber (age + 5 g) increased during treatment (from 46.8 to 52.8% on day 45 and to 56.3% on day 90; P = 0.009). Food and dietary fiber intake and triceps skinfold thickness increased during follow-up. We conclude that the therapeutic program provided a good clinical outcome.

Body Composition↗

PubMed2001

Dissociation of hemopoietic chimerism and allograft tolerance after allogeneic bone marrow transplantation.

Creation of stable hemopoietic chimerism has been considered to be a prerequisite for allograft tolerance after bone marrow transplantation (BMT). In this study, we demonstrated that allogeneic BMT with bone marrow cells (BMC) prepared from either knockout mice deficient in both CD4 and CD8 T cells or CD3E-transgenic mice lacking both T cells and NK cells maintained a high degree of chimerism, but failed to induce tolerance to donor-specific wild-type skin grafts. Lymphocytes from mice reconstituted with T cell-deficient BMC proliferated when they were injected into irradiated donor strain mice, whereas lymphocytes from mice reconstituted with wild-type BMC were unresponsive to donor alloantigens. Donor-specific allograft tolerance was restored when donor-type T cells were adoptively transferred to recipient mice given T cell-deficient BMC. These results show that donor T cell engraftment is required for induction of allograft tolerance, but not for creation of continuous hemopoietic chimerism after allogeneic BMT, and that a high degree of chimerism is not necessarily associated with specific allograft tolerance.

Adoptive Transfer↗

PubMed2001

Cow's milk protein intolerance and chronic constipation in children.

Cow's milk protein (CMP) allergy was investigated in 25 children (age-range 3 months to 11 years) with chronic constipation. A diagnosis of constipation was made on the basis of a history of painful elimination of hard stools for at least 1 month, whether or not associated with a reduced frequency of stools or soiling. The children were evaluated using clinical parameters and the following laboratory tests: total serum immunoglobulin E (IgE); specific IgE (radioallergosorbent test [RAST]) for whole cow's milk, alpha-lactoalbumin, beta-lactoglobulin, and a food group; and skin-prick tests with whole milk, alpha-lactoalbumin, beta-lactoglobulin, and casein. Following the evaluation, the children were submitted to a CMP-free diet for a period of 4 weeks. In seven patients (28%), constipation disappeared during the CMP-free diet and reappeared within 48-72 h following challenge with cow's milk. In two infants a rectal biopsy revealed allergic colitis and they therefore did not undergo the challenge. High serum levels of total IgE were observed in five of the children who showed a clinical improvement (71%), a positive skin-test in two (29%), and detectable specific IgE in two (29%). These results suggest that CMP allergy or intolerance should be considered as a cause of chronic refractory constipation in children, although the underlying mechanism still require further investigation.

Child↗

PubMed1995

Pathology review in an early prostate cancer detection program: results from the American Cancer Society-National Prostate Cancer Detection Project.

Biopsy materials obtained in the American Cancer Society National Prostate Cancer Detection Project were reviewed at the Central Pathology Laboratory at the Armed Forces Institute of Pathology. Of 265 cases submitted, 177 were diagnosed as prostatic carcinoma, 7 as prostatic intraepithelial neoplasia (PIN), 13 as atypical glands or atypical hyperplasia, and the remaining 68 were benign hyperplasias. Irrespective of the means of detectin or the grading system used (Gleason or WHO-Mostofi), a large majority of the cancers were detected as low-grade tumors. Of 27 cases of PIN reported, 20 were associated with cancer, leaving 7 cases with the sole diagnosis of PIN. These data may indicate the increased use of prostate-specific antigen (PSA), digital rectal examination (DRE), and transrectal ultrasound (TRUS) in the United States is shifting the spectrum of prostate cancer pathology toward early low-grade tumors.

Biopsy↗

PubMed1981

Pancreatitis in patients with Reye's syndrome.

Three patients who died of a Reye's syndrome had biochemical or pathological evidence of pancreatitis. None of the 38 survivors had clinical or biochemical evidence of pancreatic dysfunction. The use of hypertonic glucose solutions and exogenous insulin may reverse the metabolic abnormalities seen in Reye's syndrome and may spare the pancreas, thereby preventing the development of pancreatitis. In addition, serum calcium and glucose concentrations appear to correlate with pancreatic function and may be of value in detecting the occurrence of pancreatitis. It is our impression that the development of pancreatitis protends a poor prognosis in patients with Reye's syndrome.

Adolescent↗

PubMedDate not supplied

[Bronchial asthma and duodenal ulcer and erosive bulbo-duodenitis in children: report of 6 cases].

The coexistence of moderate and severe asthma and duodenal ulcer is not very well established as yet. We started a protocol trying to establish the presence of reflux esophagitis in children with moderate or severe asthma. Thirty two patients underwent upper digestive endoscopy and, surprisingly, we found six children (18.7%) with the following digestive aspects: four children had duodenal ulcer, and two had erosive duodenitis. We report these cases and discuss some etiopathogenic aspects about these possible association, and beware the clinician to pay attention to abdominal pain in children with bronchial asthma.

Abdominal Pain↗

PubMedDate not supplied

[Dermatoglyphic patterns in celiac disease].

In 1990 a project was performed in Israel in which the authors reported a higher frequency of whorls and a lower frequency of ulnar loops in the dermatoglyphic pattern of children with celiac disease than in children belonging to control group. Based on these findings we carried out a similar study with our local population. Thirty six celiac children, their parents and siblings had their fingerprints analysed and compared to a control group matching for age, sex and race, in order to assess the efficiency of this method for the diagnosis of celiac disease. A statistically significant higher frequency of whorls and arches was found in celiac children than in control group (whorls = 40.6%, arches = 11.7%; whorls = 30.3%, arches = 5.0%, respectively) as well as a strong correlation between the dermatoglyphic pattern of the parents and their celiac children. There was also a statistically higher frequency of whorls > = 4 in celiac children (55.6%) than in controls (30.6%). The conclusion is that the dermatoglyphic pattern analysis can be used as a complementary data. Due to its low sensitivity (55.6%) and specificity (69.4%) considering the presence of four or more whorls, it is not useful as a screening or as a method itself, for the diagnosis of celiac disease.

Celiac Disease↗