Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Pivot Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Target Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Query: UNIPROT:P21817 (
RyR1
)
1,154
document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)
A 49-year-old man with no past history of malignant hyperthermia (MH) and scheduled for hernia repair was suspected of MH after local infiltration anesthesia at other hospital. Although intravenous diazepam was not effective for increased body temperature, tachycardia, and
convulsion
, dantrolene was effective for these signs. However, blood test showed no abnormal finding. At our hospital, he was scheduled for hernia repair and muscle biopsy under total intravenous anesthesia. No event occurred intra- and postoperatively. The examination for muscle biopsy revealed that the function of his
ryanodine receptor 1
is abnormal. The events which had occurred at other hospital were uncertain of being associated with MH.
...
PMID:[Case of suspected malignant hyperthermia following local infiltration anesthesia]. 2299 14
Skeletal muscle is a highly organized tissue that has to be optimized for fast signalling events conveying electrical excitation to contractile response. The site of electro-chemico-mechanical coupling is the skeletal muscle triad where two membrane systems, the extracellular t-tubules and the intracellular sarcoplasmic reticulum, come into very close contact. Structure
fits
function here and the signalling proteins DHPR and
RyR1
were the first to be discovered to bridge this gap in a conformational coupling arrangement. Since then, however, new proteins and more signalling cascades have been identified just in the last decade, adding more diversity and fine tuning to the regulation of excitation-contraction coupling (ECC) and control over Ca
2+
store content. The concept of Ca
2+
entry into working skeletal muscle has become attractive again with the experimental evidence summarized in this review. Store-operated Ca
2+
entry (SOCE), excitation-coupled Ca
2+
entry (ECCE), action-potential-activated Ca
2+
current (APACC), and retrograde EC-coupling (ECC) are new concepts additional to the conventional orthograde ECC; they have provided fascinating new insights into muscle physiology. In this review, we discuss the discovery of these pathways, their potential roles, and the signalling proteins involved that show that the triad may become a crowded place in time.
...
PMID:New factors contributing to dynamic calcium regulation in the skeletal muscle triad-a crowded place. 2850 43
