Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: EC:6.2.1.7 (BAL)
 1,977 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

To define better the syndrome of diffuse alveolar hemorrhage (DAH), we conducted a postmortem study in 77 patients who died of pulmonary complications, distributed into three groups. Group A included 47 patients with hematologic diseases treated with allogeneic bone marrow transplant (BMT); Group B, 20 patients with hematologic diseases treated with conventional chemotherapy; and Group C, 10 patients without hematologic diseases. The diagnosis of DAH was established when there was blood in at least 30% of the lung tissue evaluated without evidence of infection or any other pathologic change that could account for its presence. The presence of an associated pulmonary complication was considered only when there was normal lung parenchyma between both blood and the specific lesions. Diffuse alveolar hemorrhage was shown in 11 patients in Group A (23%) compared with 1 patient in Group B (5%) (p < 0.05). Of the 11 patients with DAH in Group A, 10 had some associated pulmonary complication: 7 presented with diffuse alveolar damage (DAD), 2 with associated bacterial pneumonia and 1 with invasive aspergillosis, 2 others had an associated cytomegalovirus (CMV) pneumonitis, and the remaining patients had an associated herpes pneumonia. There were no clinical differences between patients with and without DAH. Of 8 patients with confirmed DAH in Group A, who had been submitted to a bronchoscopic examination within 1 wk of death, 4 had normal BAL fluid; by contrast, 7 of 13 patients without DAH had hemorrhagic BAL fluid.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Diffuse alveolar hemorrhage in allogeneic bone marrow transplantation. A postmortem study. 769 23

Herpes virus infections remain a major challenge in solid organ transplantation. HHV6 and 7 blood viral load was associated with pathology after renal transplantation. Little is known about the significance of tissue HHV6 and 7 infections. A total of 18 tissue biopsies (13 kidney, three GI and two BAL) from nine pediatric transplant patients (five kidney, two liver, one combined liver and kidney and one bone marrow transplant) were subjected to blood HHV6 IgG and IgM testing. In addition, tissue HHV6 and 7 semi-quantitative PCR analysis with subsequent detection by ELISA and quantitative methods were applied to the same samples. We also studied four native kidney biopsies of children with other kidney disease. The results of the biopsies were correlated with clinical data. Of the transplant patients, 78% were HHV6 IgG positive. Six of nine had a positive IgM on at least one occasion, however, only two of nine transplant patients were symptomatic with a mixed CMV/EBV septic picture of multi-organ failure. Only these two patients had a significant tissue viral load for HHV6. Additionally, a very significant tissue viral load for HHV6 was detected in an immunocompromised patient 3 wk after a roseola-like febrile illness. The HHV6 copies were 31, 88 and 206 per 10 microL of DNA, respectively. In the patient who also had the fourth positive ELISA for HHV6 PCR product, the Multiplex PCR and restriction enzyme assay on its PCR product revealed a significant contribution by HHV7, while the HHV6-B signal was rather weak. Significant tissue HHV6 loads can be found in tissue biopsies from organ recipients with significant illness and also in native kidneys after primary infection. This may explain the high prevalence of HHV6 in transplanted kidneys. Further studies on HHV6 and 7 using molecular techniques should be supported.
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PMID:Tissue HHV6 and 7 determination in pediatric solid organ recipients--a pilot study. 1487 Aug 94