calsequestrin/homa

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Calsequestrin-1: a new candidate gene for malignant hyperthermia and exertional/environmental heat stroke.

Watumiaji waliosajiliwa tu ndio wanaweza kutafsiri nakala

Ingia / Ingia

Malignant hyperthermia (MH) and exertional/environmental heat stroke (EHS) in humans present as similar life threatening crises triggered by volatile anaesthetics and strenuous exercise and/or high temperature, respectively. Many families (70-80%) diagnosed with MH susceptibility (MHS), and a few

Characterization of Two Human Skeletal Calsequestrin Mutants Implicated in Malignant Hyperthermia and Vacuolar Aggregate Myopathy.

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Ingia / Ingia

Calsequestrin 1 is the principal Ca(2+) storage protein of the sarcoplasmic reticulum of skeletal muscle. Its inheritable D244G mutation causes a myopathy with vacuolar aggregates, whereas its M87T "variant" is weakly associated with malignant hyperthermia. We characterized the consequences of these

Exertional rhabdomyolysis and malignant hyperthermia in a patient with ryanodine receptor type 1 gene, L-type calcium channel alpha-1 subunit gene, and calsequestrin-1 gene polymorphisms.

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Ingia / Ingia

Enhanced Ca2+-induced calcium release by isolated sarcoplasmic reticulum vesicles from malignant hyperthermia susceptible pig muscle.

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Ingia / Ingia

To further define the possible involvement of sarcoplasmic reticulum calcium accumulation and release in the skeletal muscle disorder malignant hyperthermia (MH), we have examined various properties of sarcoplasmic reticulum fractions isolated from normal and MH-susceptible pig muscle. A

Antioxidants protect calsequestrin-1 knockout mice from halothane- and heat-induced sudden death.

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Ingia / Ingia

BACKGROUND Mice lacking calsequestrin-1 (CASQ1-null), a Ca-binding protein that modulates the activity of Ca release in the skeletal muscle, exhibit lethal hypermetabolic episodes that resemble malignant hyperthermia in humans when exposed to halothane or heat stress. METHODS Because oxidative

Increased store-operated Ca2+ entry in skeletal muscle with reduced calsequestrin-1 expression.

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Ingia / Ingia

Store-operated Ca(2+) entry (SOCE) contributes to Ca(2+) handling in normal skeletal muscle function, as well as the progression of muscular dystrophy and sarcopenia, yet the mechanisms underlying the change in SOCE in these states remain unclear. Previously we showed that calsequestrin-1 (CSQ1)

Analysis of sarcoplasmic reticulum proteins in patients susceptible to malignant hyperthermia.

Watumiaji waliosajiliwa tu ndio wanaweza kutafsiri nakala

Ingia / Ingia

It has been suspected that the cause of malignant hyperthermia (MH) is an abnormality in the sarcoplasmic reticulum of skeletal muscle. We isolated the sarcoplasmic reticulum from malignant hyperthermia-susceptible (MHS) patients and controls and analysed the protein composition with sodium dodecyl

Porcine malignant hyperthermia susceptibility: increased calcium-sequestering activity of skeletal muscle sarcoplasmic reticulum.

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Ingia / Ingia

This study tested the hypothesis that calcium-sequestration by isolated sarcoplasmic reticulum was abnormal in skeletal muscle of malignant hyperthermia-susceptible swine. A heavy sarcoplasmic reticulum fraction was isolated from malignant hyperthermia and control muscle using differential and

Strenuous exercise triggers a life-threatening response in mice susceptible to malignant hyperthermia.

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Ingia / Ingia

In humans, hyperthermic episodes can be triggered by halogenated anesthetics [malignant hyperthermia (MH) susceptibility] and by high temperature [environmental heat stroke (HS)]. Correlation between MH susceptibility and HS is supported by extensive work in mouse models that carry a mutation in

Altered Ca2+ concentration, permeability and buffering in the myofibre Ca2+ store of a mouse model of malignant hyperthermia.

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Ingia / Ingia

Malignant hyperthermia (MH) is linked to mutations in the type 1 ryanodine receptor, RyR1, the Ca2+ channel of the sarcoplasmic reticulum (SR) of skeletal muscle. The Y522S MH mutation was studied for its complex presentation, which includes structurally and functionally altered cell 'cores'.

The effects of mutated skeletal ryanodine receptors on calreticulin and calsequestrin expression in the brain and pituitary gland of boars.

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Ingia / Ingia

Mutations in skeletal ryanodine receptors (sRyR) result in malignant hyperthermia in humans and Porcine Stress Syndrome (PSS) in pigs. Whether the sRyR is expressed in neuronal tissue and what impact it has on neuronal function is relatively unexplored. We have hypothesized that the presence of

CASQ1 gene is an unlikely candidate for malignant hyperthermia susceptibility in the North American population.

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Ingia / Ingia

Malignant hyperthermia (MH, MIM# 145600) is a complex pharmacogenetic disorder that is manifested in predisposed individuals as a potentially lethal reaction to volatile anesthetics and depolarizing muscle relaxants. Studies of CASQ1-null mice have shown that CASQ1, encoding calsequestrin 1, the

Increased sensitivity of the ryanodine receptor to halothane-induced oligomerization in malignant hyperthermia-susceptible human skeletal muscle.

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Ingia / Ingia

Mutations in the skeletal muscle RyR1 isoform of the ryanodine receptor (RyR) Ca2+-release channel confer susceptibility to malignant hyperthermia, which may be triggered by inhalational anesthetics such as halothane. Using immunoblotting, we show here that the ryanodine receptor, calmodulin,

Evidence for intraluminal Ca++ regulatory site defect in sarcoplasmic reticulum from malignant hyperthermia pig muscle.

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Ingia / Ingia

Malignant hyperthermia (MH) is a pharmacogenetic disease of humans and various animal species that predisposes to a life-threatening, anesthetic agent-induced syndrome. MH is thought to be a consequence of abnormal, sustained increases in myoplasmic Ca++ and sarcoplasmic reticulum (SR) membranes

Ryanodine receptor in different malignant hyperthermia-susceptible porcine muscles.

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Ingia / Ingia

The sarcoplasmic reticulum (SR) ryanodine receptor was studied in SR vesicles isolated from the vastus intermedius skeletal muscle and cardiac muscle of malignant hyperthermia-susceptible (MHS) and normal pigs. MHS and normal heavy SR preparations isolated from the vastus intermedius muscle had

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