Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0004093 (asthenia)
 2,650 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Weakness in inflammatory myopathy is commonly more prominent than is muscle fiber necrosis, suggesting additional explanations for its origin. Recent studies reveal that cell-mediated immune mechanisms are active in PMS-DMS. In experiments reported here, the effect of human mononuclear cell-derived mediator-rich supernatant upon calcium accumulation by SR membranes was examined. SR, by triggered binding and release of calcium in the vicinity of myofibrils, plays a key role in regulation of skeletal muscle contraction and relaxation. SR was derived from Lewis and Sprague-Dawley rat pelvic girdle muscles. Mediator-rich supernatants were generated by exposure of Hypaque-Ficoll-purified human mononuclear cells to PHA-P and Con-A during 72 hr of incubation in RPMl 1640 medium containing 10% autologous serum. Mitogens alone were without effect on SR. Suppression of ATP-dependent calcium accumulation was demonstrable within 40 min of exposure of SR to mediator-rich supernatants. The factor(s) producing suppression of calcium binding was nondialyzable, stable on storage at -70 degrees C, and active upon SR at physiologic calcium-loading levels. These findings may have important implications for understanding of the mechanism of weakness in inflammatory myopathies.
 ...
PMID:Mitogen-activated human mononuclear cells suppress calcium binding by sarcoplasmic reticulum. 696 2

Neo-adjuvant brachytherapy (NBT) for oesophageal cancer is under rapid development in recent years and more reports are required to elucidate its complications and drawbacks. Here, we report a case treated for NBT whose oesophagus was perforated during the procedure and mention necessary precautions to avoid it. A 73 year old male whose upper gastrointestinal endoscopy showed a lesion extending from 29 cm to 33 cm of the incisors with a histology of poorly differentiated squamous cell carcinoma, without metastases. Endoscopic ultrasonography diagnosed a T3 N0 grade tumour. He was selected for NBT and neo-adjuvant chemotherapy. The patient received 5 Gy in the first session of NBT, but in the second session before receiving the same dosage his control chest X-ray showed the tip of the catheter to be out of the oesophageal tract. After confirmation of the perforation by Gastrografin, we performed total oesophagectomy combined with a gastric pull-up procedure. To our best knowledge, our case is the first reported complication related to the direct effect of the catheter and tissue manipulation rather than the radiation beam. Weakness in the oesophageal wall due to tumour involvement makes it prone to perforation by any rigid catheter.
 ...
PMID:Oesophageal perforation during neo-adjuvant brachytherapy for oesophageal squamous cell carcinoma. 2570 1