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Showing 13 to 24 of 288 entries
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Increases in Cytosolic Ca2+ in Parsley Mesophyll Cells Correlate with Leaf Senescence.

Plant physiology

Huang FY, Philosoph-Hadas S, Meir S, Callaham DA, Sabato R, Zelcer A, Hepler PK.
PMID: 12223791
Plant Physiol. 1997 Sep;115(1):51-60. doi: 10.1104/pp.115.1.51.

The ability to maintain the cytoplasmic Ca2+ concentration ([Ca2+]cyt) at homeostatic levels has been examined during leaf senescence in detached parsley (Petroselinum crispum) leaves. Fluorescence ratiometric imaging of mesophyll cells isolated from parsley leaves at various senescence stages and...

Regulation of intracellular calcium in dispersed fat body trophocytes of the cockroach, Periplaneta americana, by hypertrehalosemic hormone.

Journal of insect physiology

Sun D, Steele JE.
PMID: 12770146
J Insect Physiol. 2001 Dec;47(12):1399-1408. doi: 10.1016/s0022-1910(01)00130-5.

Incubation of trophocytes from dissaggregated fat body of Periplaneta americana with either of the hypertrehalosemic hormones, HTH-I or HTH-II, leads to an increase in the cytosolic concentration of Ca(2+) from approximately 80 to approximately 310nM with a rise time...

Intracellular calcium in prothoracic glands of Manduca sexta.

Journal of insect physiology

Birkenbeil H.
PMID: 12769962
J Insect Physiol. 1998 Mar;44(3):279-286. doi: 10.1016/s0022-1910(97)00115-7.

Cytosolic free calcium was measured in individual prothoracic gland cells of Manduca larvae with Fura-2. During the last larval instar there was no correlation between intracellular calcium concentration and ecdysteroid secretion by the glands. The addition of prothoracicotropic hormone...

Mechanisms of Hydrogen Peroxide-Induced Increase in Intracellular Calcium in Cardiomyocytes.

Journal of cardiovascular pharmacology and therapeutics

Wang X, Takeda S, Mochizuki S, Jindal R, Dhalla NS.
PMID: 10684523
J Cardiovasc Pharmacol Ther. 1999 Jan;4(1):41-48. doi: 10.1177/107424849900400107.

BACKGROUND: Hydrogen peroxide (H(2)O(2)) in high concentrations has been implicated in heart dysfunction attributable to ischemia-reperfusion. Although H(2)O(2) is also known to increase the intracellular concentration of Ca(2+) ([Ca(2+)](i)) in cardiomyocytes, the mechanisms for such a change are not...

Effects of copper-aspirin complex on plasma 6-keto-prostaglandin F(1alpha) level and platelet cytosolic calcium in rabbits.

Platelets

Shen ZQ, Li L, Wu LO, Liu WP, Chen ZH.
PMID: 16801113
Platelets. 1999;10(5):345-8. doi: 10.1080/09537109976004.

Effects of copper-aspirin complex on washed platelet aggregation, thromboxane B(2) formation and 6-ketoprostaglandin F(1alpha) level were monitored by Born's and Terashita's methods, respectively. The influence of copper-aspirin complex on cytosolic free calcium was examined using the fluorescent indicator, Fura...

Nephrotoxicity in vitro: Role of ion deregulation in signal transduction following injury-Studies utilizing digital imaging fluorescence microscopy.

Toxicology in vitro : an international journal published in association with BIBRA

Trump BF, Berezesky IK, Elliget KA, Smith MA, Phelps PC.
PMID: 20702205
Toxicol In Vitro. 1990;4(4):409-14. doi: 10.1016/0887-2333(90)90091-7.

Over the years, many approaches have been utilized for studying in vitro toxicity in the kidney. These have included the use of isolated perfused kidneys, renal slices, isolated nephron explants and cultured tubular epithelium. Currently, in vitro systems of...

Pharmacological evidences for the stimulation of calcium-sensing receptors by nifedipine in gingival fibroblasts.

Journal of pharmacology & pharmacotherapeutics

Hattori T, Ara T, Fujinami Y.
PMID: 21701644
J Pharmacol Pharmacother. 2011 Jan;2(1):30-5. doi: 10.4103/0976-500X.77111.

OBJECTIVE: To investigate pharmacologically whether CaSRs are involved in the Ca(2+) antagonist-induced [Ca(2+)]i elevation in gingival fibroblasts.MATERIALS AND METHODS: Gin-1 cells, normal human gingival fibroblasts, were used as the material. The [Ca(2+)] i was measured with fura-2/AM, a Ca(2+)-sensitive...

Antihypertension Induced by Tanshinone IIA Isolated from the Roots of Salvia miltiorrhiza.

Evidence-based complementary and alternative medicine : eCAM

Chan P, Liu IM, Li YX, Yu WJ, Cheng JT.
PMID: 19542183
Evid Based Complement Alternat Med. 2011;2011:392627. doi: 10.1093/ecam/nep056. Epub 2011 Jan 04.

Tanshinone IIA is one of the active principles in danshen (Salvia miltiorrhiza Bge) widely used in treatment of cardiovascular disorders. We investigated the effect of danshen or tanshinone IIA on blood pressure and its possible mechanisms. An i.p. injection...

Cardiotoxicity of dichloromethane in rats and in cultured rat cardiac myocytes.

Toxicology in vitro : an international journal published in association with BIBRA

Hoffmann P, Müller SP, Heinroth K, Büchner E, Richards D, Toraason M.
PMID: 20650117
Toxicol In Vitro. 1995 Aug;9(4):489-92. doi: 10.1016/0887-2333(95)00019-5.

The purpose of the present study was to examine whether cardiac actions of dichloromethane (DCM) in vivo correlate with in vitro alterations of Ca(2+) dynamics in cardiac myocytes. Electrically induced fluctuations of cytosolic free Ca(2+) concentration ([Ca(2+)](i)) were investigated...

On the role of intravesicular calcium in the motion and exocytosis of secretory organelles.

Communicative & integrative biology

Machado JD, Camacho M, Alvarez J, Borges R.
PMID: 19704891
Commun Integr Biol. 2009;2(2):71-3. doi: 10.4161/cib.7467.

Secretory vesicles of sympathetic neurons and chromaffin granules maintain a pH gradient towards the cytosol (5.5 vs. 7.2) promoted by the V-ATPase activity. This gradient of pH is mainly responsible for the accumulation of amines. The secretory vesicles contain...

Excitatory effect of ATP on rat area postrema neurons.

Purinergic signalling

Sorimachia M, Wakamoria M, Akaikeb N.
PMID: 18404492
Purinergic Signal. 2006 Sep;2(3):545-57. doi: 10.1007/s11302-006-9004-4. Epub 2006 May 30.

ATP-induced inward currents and increases in the cytosolic Ca(2+) concentration ([Ca](in)) were investigated in neurons acutely dissociated from rat area postrema using whole-cell patch-clamp recordings and fura-2 microfluorometry, respectively. The ATP-induced current (I (ATP)) and [Ca](in) increases were mimicked...

The estimation of free calcium within synaptosomes and mitochondria with fura-2; comparison to quin-2.

Neurochemistry international

Komulainen H, Bondy SC.
PMID: 20501082
Neurochem Int. 1987;10(1):55-64. doi: 10.1016/0197-0186(87)90172-0.

The utility of the acetoxymethyl esters of two tetracarboxylic acids, fura-2 and quin-2, in the determination of ionic calcium levels within synaptosomes and mitochondria was compared. Synaptosomes and isolated mitochondria both accumulated the esters but mitochondria had a much...

Showing 13 to 24 of 288 entries