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Are Children with C-Spine Trauma Immobilized? 45 C-Spine Evaluation in Trauma Patients: Is CT the Way to Go? 34 New Clinical Rule Highly Sensitive for Cervical Spine Injuries . Patterns of C-Spine Injuries in the Elderly 39 SCIWORA Is an Uncommon C-Spine Injury Pattern, Especially in Children 75. Tion was found proved. Mr Cassell's conduct was such as to render unfit to be on the Register. He had knowingly flouted the law of the land and had failed in one of the primary duties incumbent upon a pharmacist, said the chairman. The 1985 regulations were not just red tape, the chairman said. They provided a proper check on drugs that should not be dangerously misused, and Mr Cassell had acknowledged his failure in those respects. On the other hand, Mr Cassell had admitted his errors and omissions and acknowledged his responsibility for them. There had been no fraud on his part and he had made no commercial gain. Over the years, he had provided a fine pharmaceutical service and he had a series of good references. He now had in place systems that made a repetition of the breaches of the law unlikely. No doubt his appearance before the committee had been salutary, said the chairman, and the committee hoped that he now had the clearest appreciation of his duties under the law as a pharmacist. Mr Cassell was reprimanded. The chairman went on to add that, although the committee had some doubts about whether the form of register now being followed in the Humberside area matched what the 1985 regulations demanded, nevertheless what was being done seemed potentially to be an improvement on what was required by law. The Society's inspector for the area was asked to monitor the system and if it were found to be preferable to what the law, strictly, required, it might be desirable for the Royal Pharmaceutical Society to communicate that to the Home Office. Physicians typically prescribe 25 milligrams of spironolactone four times a day from the time of ovulation to the onset of menstruation.

Medicare verification system process: this process must be completed for medicaid coverage and payment of a pdp denied drug. NDA 20-639 S-026 Final Agreed Upon Labeling extends to longer-term use, i.e., beyond several months. It is also unknown whether the suicidality risk extends to adults. All pediatric patients being treated with antidepressants for any indication should be observed closely for clinical worsening, suicidality, and unusual changes in behavior, especially during the initial few months of a course of drug therapy, or at times of dose changes, either increases or decreases. Such observation would generally include at least weekly face-to-face contact with patients or their family members or caregivers during the first 4 weeks of treatment, then every other week visits for the next 4 weeks, then at 12 weeks, and as clinically indicated beyond 12 weeks. Additional contact by telephone may be appropriate between face-to-face visits. Adults with MDD or co-morbid depression in the setting of other psychiatric illness being treated with antidepressants should be observed similarly for clinical worsening and suicidality, especially during the initial few months of a course of drug therapy, or at times of dose changes, either increases or decreases. The following symptoms, anxiety, agitation, panic attacks, insomnia, irritability, hostility, aggressiveness, impulsivity, akathisia psychomotor restlessness ; , hypomania, and mania, have been reported in adult and pediatric patients being treated with antidepressants for major depressive disorder as well as for other indications, both psychiatric and nonpsychiatric. Although a causal link between the emergence of such symptoms and either the worsening of depression and or the emergence of suicidal impulses has not been established, there is concern that such symptoms may represent precursors to emerging suicidality. Consideration should be given to changing the therapeutic regimen, including possibly discontinuing the medication, in patients whose depression is persistently worse, or who are experiencing emergent suicidality or symptoms that might be precursors to worsening depression or suicidality, especially if these symptoms are severe, abrupt in onset, or were not part of the patient's presenting symptoms.

Inflammation of the penis and or foreskin candidal balanitis ; caused by infection with candida albicans also known as thrush and ramipril. Bone metastases are usually associated with advanced prostate cancer, so bone scans are not considered essential for early stage disease. For men with a PSA of less than 10 and a Gleason Grade of 6 or less, the chances of the disease having metastasised to the bone has been estimated at less than 1%. The procedure for a bone scan involves nuclear material injected into a vein usually in the arm ; . There is a wait of two to three hours for the material to circulate in the system. The person being examined then lies on a special table and the gamma cameras one above and one below ; slowly track down the length of the body. The entire procedure takes between 30 and 60 minutes. Some people are concerned about the introduction of nuclear material into the body, but it is said that the radiation from this procedure is similar to that from a normal X-ray. The material is quickly cleared from the body. There is nothing painful about the procedure apart from the injection, but the table upon which the person lies is made of metal and can be very cold, especially in winter, which creates a degree of discomfort. Important point regarding bone scans The procedure is not cancer specific. It highlights local changes in bone metabolism, not cancer as such. So it will also highlight old fracture sites and even arthritis. Author Michael Korda, in his book Man To Man, describes the fear a positive bone scan raised. This showed what seemed to be clear signs of metastasis to his collarbone. It was only some time later that he remembered he had fractured his collarbone years before. STAGING AND DIAGNOSIS The final step in this part of the journey through the Forest of Fear is to stage the disease. This summarises the results of all the tests and results in the Diagnosis. It is very important to achieve as accurate a staging as possible because, as will be seen, some forms of treatment are more suitable for some stages than for others. Until fairly recently there were many systems of staging. The best known was probably the Whitmore-Jewett system, which showed four stages defined as A, B, C, D. The current system, used almost universally, is referred to as the TNM system. There are four T stages, which are then subdivided into a number of sub-sets. These are followed by the N and M stages, which are also subdivided. The main divisions are as shown below, although there may be some variations in some definitions: Stage T 1: The tumour is discovered "incidentally". This is usually in connection with a TURP Transurethral Resection of the Prostate ; done to relieve the symptoms of BPH Benign Prostate Hyperplasia ; . The material produced by the TURP is subjected to pathology analysis and if cancer is detected, the disease is staged as T1a or T1b depending on the amount of material exhibiting malignancy and the Gleason Score. If the tumour is discovered in the course of a biopsy following an elevated PSA test and if there are.

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REFERENCES 1. Francis GS, Tang WH. Pathophysiology of congestive heart failure. Rev Cardiovasc Med. 2003; 4 suppl 2 ; : S14-S20. 2. Cody RJ. The clinical potential of renin inhibitors and angiotensin antagonists. Drugs. 1994; 47: 586-598. Francis GS, Goldsmith SR, Levine TB, Olivari MT, Cohn JN. The neurohumoral axis in congestive heart failure. Ann Intern Med. 1984; 101: 370377. Dzau VJ. Renal and circulatory mechanisms in congestive heart failure. Kidney Int. 1987; 31: 1402-1415. Hensen J, Abraham WT, Durr JA, Schrier RW. Aldosterone in congestive heart failure: analysis of determinants and role in sodium retention. J Nephrol. 1991; 11: 441-446. Cogan mg. Angiotensin II: a powerful controller of sodium transport in the early proximal tubule. Hypertension. 1990; 15: 451-458. Quan A, Baum M. Regulation of proximal tubule transport by angiotensin II. Semin Nephrol. 1997; 17: 423-430. Smith AG. Spironolac5one in the long-term management of patients with congestive heart failure. Curr Med Res Opin. 1980; 7: 131-136. CONSENSUS Trial Study Group. Effects of enalapril on mortality in severe congestive heart failure: results of the Cooperative North Scandinavian Enalapril Survival Study CONSENSUS ; . N Engl J Med. 1987; 316: 1429-1435 and captopril. Zung, found gh-3 even more effective in treating depression than the popular anti-depressant drug imipramine.
137. Third Report of the National Cholesterol Education Program NCEP ; Expert Panel on Detection, Evaluation, and Treatment of High Blood Cholesterol in Adults Adult Treatment Panel III ; final report. Circulation 2002; 106: 3143 Malan SS. Psychosocial adjustment following MI: current views and nursing implications. J Cardiovasc Nurs 1992; 6: 5770. Havik OE, Maeland JG. Patterns of emotional reactions after a myocardial infarction. J Psychosom Res 1990; 34: 271 Moser DK, Dracup K. Is anxiety early after myocardial infarction associated with subsequent ischemic and arrhythmic events? Psychosom Med 1996; 58: 395 Frasure-Smith N, Lesprance F, Talajic M. The impact of negative emotions on prognosis following myocardial infarction: is it more than depression? Health Psychol 1995; 14: 388 Chae Cu, Hennekens CH. Beta blockers. In: Hennekens CH, ed. Clinical Trials in Cardiovascular Disease: A Companion to Braunwald's Heart Disease. Philadelphia, PA: WB Saunders, 1999; 79 94. Latini R, Maggioni AP, Flather M, et al. ACE inhibitor use in patients with myocardial infarction: summary of evidence from clinical trials. Circulation 1995; 92: 31327. ACE Inhibitor Myocardial Infarction Collaborative Group. Indications for ACE inhibitors in the early treatment of acute myocardial infarction: systematic overview of individual data from 100, 000 patients in randomized trials. Circulation 1998; 97: 220212. Flather MD, Yusuf S, Kber L, et al., for the ACE-Inhibitor Myocardial Infarction Collaborative Group. Long-term ACE-inhibitor therapy in patients with heart failure or left-ventricular dysfunction: a systematic overview of data from individual patients. Lancet 2000; 355: 1575 Pitt B, Zannad F, Remme WJ, et al., for the Randomized Aldactone Evaluation Study Investigators. The effect of spironolactone on morbidity and mortality in patients with severe heart failure. N Engl J Med 1999; 341: 709 Pitt B, Remme W, Zannad F, et al., for the Eplerenone Post-Acute Myocardial Infarction Heart Failure Efficacy and Survival Study Investigators. Eplerenone, a selective aldosterone blocker, in patients with left ventricular dysfunction after myocardial infarction. N Engl J Med. 2003; 348: 1309 Dickstein K, Kjekshus J, for the OPTIMAAL Steering Committee of the Optimal Trial in Myocardial Infarction with Angiotensin II Antagonist Losartan OPTIMAAL ; Study Group. Effects of losartan and captopril on mortality and morbidity in high-risk patients after acute myocardial infarction: the OPTIMAAL randomised trial: Optimal Trial in Myocardial Infarction with Angiotensin II Antagonist Losartan. Lancet 2002; 360: 752 Pfeffer MA, McMurray JJ, Velazquez EJ, et al., for the Valsartan in Acute Myocardial Infarction Trial Investigators. Valsartan, captopril, or both in myocardial infarction complicated by heart failure, left ventricular dysfunction, or both. N Engl J Med 2003; 349: 1893906. Mann DL, Deswal A. Angiotensin-receptor blockade in acute myocardial infarction: a matter of dose. N Engl J Med 2003; 349: 19635. Gibbons RJ, Miller TD, Christian TF. Infarct size measured by single photon emission computed tomographic imaging with 99m ; Tcsestamibi: a measure of the efficacy of therapy in acute myocardial infarction. Circulation 2000; 101: Klocke FJ, Baird mg, Bateman TM, et al. ACC AHA ASNC guidelines for the clinical use of cardiac radionuclide imaging: a report of the American College of Cardiology American Heart Association Task Force on Practice Guidelines ACC AHA ASNC Committee to Revise the 1995 Guidelines for the Clinical Use of Radionuclide Imaging ; . Available at: : acc clinical guidelines radio rni fulltext , 2003. Accessed January 15, 2004. 153. Cheitlin MD, Armstrong WF, Aurigemma GP, et al. ACC AHA ASE 2003 guideline update for the clinical application of echocardiography: a report of the American College of Cardiology American Heart Association Task Force on Practice Guidelines ACC AHA ASE Committee to Update the 1997 Guidelines for the Clinical Application of Echocardiography ; . Available at: acc clinical guidelines echo index , 2003. Accessed January 15, 2004. 154. Mahrholdt H, Wagner A, Holly TA, et al. Reproducibility of chronic infarct size measurement by contrast-enhanced magnetic resonance imaging. Circulation 2002; 106: 23227. Menon V, Slater JN, White HD, et al. Acute myocardial infarction complicated by systemic hypoperfusion without hypotension: report of the SHOCK trial registry. J Med 2000; 108: 374 and diltiazem.
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RESULTS Chronic CsA nephrotoxicity Fig 1 shows the effect of spironolactone administration on survival percentage and body weight BW ; of the rats chronically treated with cyclosporine and fed with low sodium diet. LS-CsA exhibited a significant reduction in survival rate by 50% Fig 1A ; . The CsA-inducing mortality was completely prevented with the simultaneous administration of spironolactone, since the survival of LS-CsA + Sp group was 100%. Fig 1B shows the evolution of body weight. LS-CsA induced a progressive BW lost from second to the tenth day of treatment. Subsequently, BW was maintained until the end of the study. The rats that received LS-CsA + Sp presented a similar pattern of BW lost in the first 8 days, however after the tenth day, these animals gained weight. These results suggest that aldosterone receptor blockade maintains LS-CsA + Sp treated rats in better general health conditions than LS-CsA. Fig 2 depicts creatinine clearance determined in the five groups at the end of the study. Sodium restriction or sodium restriction and spironolactone did not produce a significant change in renal function compared with control animals. As we previously reported 13 ; , rats receiving CsA treatment presented a significant reduction of renal function by 59% as compared with vehicle rats. This reduction was completely prevented by spironolactone administration, since creatinine clearance in LS-CsA-Sp group was not different to that shown in control groups. We have previously shown 13 ; , that the protective effect of spironolactone is not associated with significant increase in serum potassium. In this study, similar results were obtained. Serum potassium levels in CsA-treated rats were 5.5 0.3 mEq L and in CsA + spironolactone treated animals were 5.5 0.2 mEq L p NS ; addition, we 13 ; and others 11; 15; 42 have previously.
Management strategies should address all of the conditions identified above and strategies will need to be monitored to assure treatment efficacy, to minimise complications and to allow changes to the management plan as the disease progresses or improves. Fluid and electrolyte problems are managed by: Restricting salt and water intake where necessary Ensuring electrolyte balance Cautious diuretic usage to minimise the risk of hepatorenal syndrome - Spironolachone is the preferred agent, in doses from 25400 mg per day - Low dose frusemide Potassium supplements as necessary A diet low in saturated fat with adequate protein, fruit and vegetables Monitoring progress with regular serum creatinine and urine electrolyte assays. When urine sodium falls below 20 mmol day, decreased renal perfusion is likely reduce diuretic, consider saline infusion over one hour ; Drainage of ascites may be necessary. In some patients this may need to become a regular process, as diuretics and other conservative management approaches often fail to control the problem. The procedure is described in standard texts. Some patients are treated with transjugular intrahepatic and rosuvastatin.

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P 0.17 for the comparison with the placebo group. There were 614 men in the placebo group and 603 in the spironolactone group. P 0.001 for the comparison with the placebo group. P 0.006 for the comparison with the placebo group. Centrifuged at 10 000g for 20 minutes. The pellet was solubilized in the 2D sample buffer 7 mol L urea, 2 mol L thiourea, 3% 3-[ 3cholamidopropyl ; 40 mmol L TRIS, 5 mmol L tributylphosphine, and 10 mmol L acrylamide ; and allowed to be alkylated at room temperature for 90 minutes. For blocking the alkylation reaction, 10 mmol L dithiothreitol was used, and then 0.5% Ampholine and bromophenol blue in traces were added to the solution. An aliquot 150 L ; of protein solution was subsequently used for rehydrating 7-cm-long immobilized pH gradient IPG ; strips Bio-Rad ; , pH 5 to 8, for 4 hours. Isoelectric focusing IEF ; was performed with a Protean IEF Cell Bio-Rad ; at low initial voltage, followed by a voltage gradient up to 5000 V; the total product time voltage applied was 25 000 voltage hour for each strip.15 For the second dimension, the IPGs strips were equilibrated for 26 minutes in a solution containing 6 mol L urea, 2% SDS, 20% glycerol, and 375 mmol L Tris-HCl, pH 8.8, under gentle shaking. The IPG strips were then laid on an 8% to 18% T-gradient SDS gel slab and cemented in situ with 0.5% agarose in the cathode buffer 192 mmol L glycine, 0.1% SDS, and Tris to pH 8.3 ; . The electrophoretic run was performed by setting a current of 5 mA gel for 1 hour, followed by 10 mA gel for 1 hour and 20 mA gel until run completion.15 The resolved proteins were then electrophoretically transferred to a nitrocellulose membrane, and Western blotting was performed as described above. For proper comparisons, the same protein concentration was loaded for all the samples investigated before and after spironolactone and before and after suppression test ; . The band densities were measured by densitometry Densitometer GS710; Bio-Rad ; , and the relative images were evaluated by means of a specific software PDQuest; Bio-Rad and valsartan.
44. TEMODAL TEMOZOLOMIDE, TMZ ; AS SECOND-LINE TREATMENT FOLLOWING PCV IN OLIGODENDROGLIAL TUMORS Chinot O 1 , Honor S 2 , Barrie M 1 , Dufour H 1 , Brauger D 2 , Grisoli F 1 ; 1 Service de Neurochirurgie; 2 Service Pharmacie; Hpital de la Timone, Marseille, France Background: The chemosensitivity of oligodendroglial tumors has been well established with PCV as first-line treatment, which has demonstrated an objective response rate complete response [CR].
Management Surgical resection remains the treatment of choice for a unilateral adenoma unless the potential risks of surgical intervention outweigh the potential benefits. Fortunately, most adenomas can now be removed laparoscopically. Adenomectomy usually corrects the hypokalemia, and the BP may return to normal or at least be more responsive to pharmacotherapy. The severity or duration of the BP elevation or target-organ damage has no bearing on the response of BP to surgical treatment 148 ; . In female patients or elderly patients with a small adenoma or in patients with bilateral adenomas, however, medical therapy with spironolactone may obviate surgical intervention. The side effects of gynecomastia and erectile dysfunction in male patients may make such treatment unacceptable, and a trial of the aldosterone antagonist eplerenone may be warranted 149 ; . Glucocorticoid-Remediable Aldosteronism GRA is a low-renin form of inherited hypertension in which aldosterone levels are usually, but not always, high. In GRA, the secretion of aldosterone is primarily regulated by ACTH rather than angiotensin II 150 ; , is therefore subject to diurnal variation, and parallels the cortisol level and terazosin.
Circulation1996; 94 : 2566– 7 5 pitt b, zannad f, remme wj, et al the effect of spironolactone on morbidity and mortality in patients with severe heart failure. The world health organization has developed a global perspective on human diseases. The following summary was developed from the World Health Report overview ; 2002: 2 "The world is living dangerously either because it has little choice, which is often the case among the poor, or because it is making the wrong choices in terms of its consumption and its activities. Indeed, there is evidence that these risk factors are part of a "risk transition" showing marked changes in patterns of living in many parts of the world. In many developing countries rapid increases in body weight are being recorded, particularly among children, adolescents and young adults. Obesity rates have risen threefold or even more in some parts of North America, Eastern Europe, the Middle East, the Pacific Islands, Australasia and China since 1980. Changes in food processing and production and in agricultural and trade policies have affected the daily diet of hundreds of millions of people.Eating fruit and vegetables can help prevent cardiovascular diseases and some cancers, low intake of them as part of diet is responsible for almost three million deaths a year from those diseases. At the same time, changes in living and working patterns have led to less physical activity and less physical labor. Physical inactivity causes about 15% of some cancers, diabetes and heart disease." The report found that there are 170 million children in poor countries who are underweight and over three million of them die each year as a result. There are more than one billion adults worldwide who are overweight and at least 300 million who are clinically obese. Among these, about half a million people in North America and Western Europe die from obesity-related diseases every year. Malnutrition remains the leading cause of disease burden among hundreds of millions of the world's poorest people and a major cause of death, especially among young children. All ages are at risk, but underweight is most prevalent among children under five years of age, and WHO estimates that approximately 27% of children in this age group are underweight. This caused an estimated 3.4 million deaths in 2000, including about 1.8million in Africa and 1.2 million in countries in Asia. It was a contributing factor in 60% of all child deaths in developing countries and candesartan.

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These data demonstrate that aldosterone and spironolactone have rapid, positive inotropic actions on the myocardium.

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The Subcommittee considered that diuretics were essential for use in children in the treatment of ascites, acute or chronic renal failure or acute glomerulonephritis. Nephrotic syndrome edema responds poorly to diuresis, and loop diuretics may be hazardous because patients are often volumedepleted despite edema. The Subcommittee considered that furosemide should be listed, and that spironolactone should be listed for use in cirrhosis and heart failure by centres undertaking such treatment and benazepril. Radiotherapy is usually delivered by an external beam from a linear accelerator. Standard therapy for unresectable disease consists of approximately 60 Gy, with the dose divided among 30 sessions over a period of six weeks, although higher doses have been used.3 In normal organs, the toxic effects of radiation include pneumonitis, esophagitis, skin desquamation, myelopathies, and cardiac abnormalities.4 These effects may be minimized by using three-dimensional computed tomography CT ; to guide therapy or by modulating the intensity of radiotherapy in order to spare normal tissue. Concurrent chemotherapy may increase the effectiveness of radiation by sensitizing the tumor to radiation, but it can also increase the adverse effects particularly esophagitis. Radiation therapy also called radiotherapy ; uses high-energy rays to kill cancer cells in a targeted area.
78 year old with systolic heart failure complaining of fatigue breathless on minimal exertion. He was taking furosemide 40 mg, ramipril 10 mg, and digoxin 62.5 mcg. Heart rate of 90 bpm and a blood pressure of 100 60 mm Hg. The JVP was raised and he had swollen ankles. Electrolytes: Normal 12-lead ECG: Sinus tachycardia and left bundle branch block. What is the most useful prognostic step? A. Add low dose beta-blocker B. Increase does of furosemide C. Initiate spironolactone D. Double dose of digoxin E. No change in medication. Other drug 1.00 companies, 0.95 that the reduction in events 0.90 was primarily 0.85 "soft" end points. 0.80 However, I 0.75 think that it is impressive that 0.70 Spieonolactone a benefit was 0.65 shown in 4 months. I 0.60 not aware of 0.55 any other Placebo study with a 0.50 statin showing 0.45 a clinical benefit this quickly. 0.00 One other 0 3 6 impressive Months result was the No. at risk 50% reduction Placebo 841 775 723 in stroke, a sec- Splronolactone 822 766 739 ondary endpoint. Please Figure 4. Kaplan-Meier Analysis of the Probability of Survival among note that benePatients in the Placebo Group and Patients in the Spironllactone Group. fit is probably The risk of death was 30 percent lower among patients in the spironolacnot confined to tone group than among patients in the placebo group P 0.001 ; . atorvastatin, as there are blood pressure is low, and that in mechanistic studies showing early this dose, it is not a diuretic. In the benefit with other statins, including RALES study, it was stopped if the Zocor and Pravachol. These studies Creatinine rose above 4.0. demonstrate improvement in endothelial function that occurs surRecommendation: Patients with prisingly quickly after dosing with a CHF should be on two of the three high dose statin. Many times I preagents: ACEI, Beta blockers, or ARB, fer these shorter acting statins espeprobably in that order. cially if I anticipate combination therapy with a fibrate such as Recommendation: Patients with Tricor or Lopid ; or with niacin. The CHF, a prolonged QRS on ECG QRS importance of this study is that it 130 msec ; , an enlarged ventriadds credence to the statement that cle 55 mm, average 70 mm in all patients with CAD should be on a the study ; and EF 35% should statin in addition to an ACEI ; . be considered for "Cardiac Resynchronization, " i.e. biventricular pacing. Note that a standard RV Congestive Heart Failure pacer produces the same result as a Based on the RALES study, the left bundle branch block and that if Val-Heft study, and the MIRACLE pacing is needed in a patient with note the slight difference in an enlarged ventricle, a biventricuspelling from the Acute Coronay lar device should be considered. Syndrome study with Lipitor ; study with biventricular pacing: The RALES study: Aldosterone is a bad actor. Its Recommendation: Patients with effect is now split into the classic or CHF and EF 35%, Creatinine mineralocorticoid effect that we 2.5, and K + 5 should be on were taught about, and what is spironolactone Aldactone ; 25 mg qd described as non-epithelial or nonor BID. Please note that you can classical effects. These latter effects start spironolactone even if the. 7 The cross sectional area of aorta was 344 54 m2 in the control group. In the LNAME group, the cross sectional area was increased by 70% P 0.05 ; control and the addition of spironolactone to L-NAME did not prevent the enlargement of the cross sectional area of aorta compared to the L-NAME group Fig. 3B and buy ramipril.

P * : p values for comparison of changes between spironolactone and amlodipine groups by Student t test. P 0.05 are defined as statistically significant * ; . Data are expressed as means SD, except for UAE, MCP-1, 8-iso-PGF2, PRA, aldosterone PRA, which are expressed as medians with interquartile ranges 25th and 75th percentiles ; . UAE: urinary albumin excretion; MCP-1: monocyte chemoattractant protein-1; 8-iso-PGF2: 8-iso-prostaglandin F2; FPG: fasting plasma glucose; TC: total cholesterol; HDL-C: high-density lipoprotein cholesterol; LDL: low-density lipoprotein cholesterol; TG: triglyceride; SBP: systolic blood pressure; DBP: diastolic blood pressure; BW: body weight; PRA: plasma renin activity; ACTH: adrenocorticotropic hormone.
We describe the route by which aldosterone-triggered macromolecules enter and exit the cell nucleus of Xenopus laevis oocyte. Oocytes were microinjected with 50 fmol aldosterone and then enucleated 230 min after injection. After isolation, nuclear envelope electrical resistance NEER ; was measured in the intact cell nuclei by using the nuclear hourglass technique. We observed three NEER stages: an early peak 2 min after injection, a sustained depression after 515 min, and a final late peak 20 min after injection. Because NEER reflects the passive electrical permeability of nuclear pores, we investigated with atomic force microscopy aldosterone-induced conformational changes of individual nuclear pore complexes NPCs ; . At the early peak we observed small 100 kDa ; molecules flags ; attached to the NPC surface. At the sustained depression NPCs were found free of flags. At the late peak large 800 kDa ; molecules plugs ; were detected inside the central channels. Ribonuclease or actinomycin D treatment prevented the late NEER peak. Coinjection of aldosterone 50 fmol ; and its competitive inhibitor spironolactone 500 fmol ; eliminated the electrical changes as well as flag and plug formation. We conclude: i ; The genomic response of aldosterone can be electrically measured in intact oocyte nuclei. ii ; Flags represent aldosterone receptors on their way into the cell nucleus whereas plugs represent ribonucleoproteins carrying aldosterone-induced mRNA from the nucleoplasm into the cytoplasm. iii ; Because plugs can be mechanically harvested with the atomic force microscopy stylus, oocytes could serve as a bioassay system for identifying aldosterone-induced early genes.

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