bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: Synthesis and Mercurophilic Properties of Dithiocrown Ethers Having an Azulene Pendant.
Authors: Kubo Kanji , Mori Akira , Nishimura Tatsuya , Kato Nobuo 
Published: February 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Tellurium‐Containing Heterocycles. Part 26. A New One‐Pot Synthetic Method for Selenium‐Containing Medium‐Sized α,β‐Unsaturated Cyclic Ketones.
Authors: Sashida Haruki , Nakayama Akemi , Kaname Mamoru 
Published: February 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Total Synthesis of (+)‐Cassaine via Transannular Diels—Alder Reaction.
Authors: Phoenix Serge , Reddy Maddi Sridhar , Deslongchamps Pierre 
Published: February 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A Second Generation Formal Synthesis of (‐)‐Cephalotaxine.
Authors: Hameed Abdul , Blake Alexander J. , Hayes Christopher J. 
Published: February 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: First Total Synthesis of (.+‐.)‐Powelline.
Authors: Anwar Hany F. , Hansen Trond Vidar 
Published: February 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Benzaldehyde Derivatives from Eurotium rubrum, an Endophytic Fungus Derived from the Mangrove Plant Hibiscus tiliaceus.
Authors: Li Dong‐Li , Li Xiao‐Ming , Li Tie‐Gang , Dang Hong‐Yue , Proksch Peter , Wang Bin‐Gui 
Published: February 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Coumarins from the Chinese Drug Qianhu. Part 27. Structure of a New Simple Coumarin Glycoside from Bai‐Hua Qianhu, Peucedanum praeruptorum.
Authors: Ishii Hirotaka , Okada Yoshihito , Baba Masaki , Okuyama Toru 
Published: February 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: 8′‐Hydroxyzearalanone (I) and 2′‐Hydroxyzearalanol (II): Resorcyclic Acid Lactone Derivatives from the Marine‐Derived Fungus Penicillium sp.
Authors: Yang Xiudong , Khong Trung Thang , Chen Li , Choi Hong Dae , Kang Jung Sook , Son Byeng Wha 
Published: February 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Design and Synthesis of Bisubstrate Inhibitors of Type 1 17β‐Hydroxysteroid Dehydrogenase: Overview and Perspectives
Authors: Fournier D. , Poirier D. , Mazumdar M. , Lin S.‐X. 
Published: February 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: N‐Alk‐1‐enylhydroxylamines
Authors: Collier S. J. 
Published: February 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Carbon Monoxide as a Reagent — The Role of N‐Heterocyclic Carbene (NHC) Ligands in Metal‐Catalyzed Carbonylation Reactions
Authors: Veige Adam S. 
Published: February 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Direct Propargylic Substitution of the Hydroxyl Group in Propargylic Alcohols
Authors: Kabalka George W. , Yao Min‐Liang 
Published: February 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Green Oxidation of Alcohols Using Biomimetic Cu Complexes and Cu Enzymes as Catalysts
Authors: Arends Isabel W. C. E. , Gamez Patrick , Sheldon Roger A. 
Published: February 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Nucleotides and Nucleic Acids: Oligo‐ and Polynucleotides
Authors: Loakes David 
Published: February 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Chemoselective Neoglycosylation
Authors: Nicotra Francesco , Cipolla Laura , Peri Francesco , La Ferla Barbara , Redaelli Cristina 
Published: February 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Intravenous verapamil therapy in imminent myocardial infarction
Authors: Hasin Y. , Freiman I. , Schwarz T. , Weiss A. T. , Gotsman M. S. 
Published: February 2009

AbstractWe studied 16 patients with small myocardial infarction who had further episodes of chest pain with ST‐segment elevation, a sign of transmural myocardial ischemia and imminent infarction extension. Coronary angiography in 14 showed a critical lesion in 13. Intravenous verapamil abolished chest pain and ST‐segment elevation. It caused a fall in right atrial and left ventricular end‐diastolic pressures (LVEDP) and cardiac output, reflex systemic vasoconstriction, and a rise in systemic vascular resistance. There was no reflex tachycardia. Volume expansion raised LVEDP and restored a normal cardiac output. Accelerated junctional rhythm with isorhythmic A‐V dissociation occurred in 5 patients. Two patients sustained a transmural infarction, 10 underwent coronary artery bypass grafting, and 4 are symptom‐free with oral treatment. Intravenous treatment was an effective method of treating acute episodes of transmural myocardial ischemia and preventing their recurrence in patients with critical coronary artery narrowing. Continuous verapamil infusion stabilized the patients' condition and enabled smooth coronary angiography and induction of anesthesia for surgery.
Transseptal left heart catheterization: A review of 278 studies
Authors: B‐Lundqvist C. , Olsson S. B. , Varnauskas E. 
Published: February 2009

AbstractIn our laboratory, we performed 278 transseptal left heart catheterizations in adult patients over a period of 13 years. The left atrium was entered in 91.4% of the intended left heart catheterizations. Of 252 attempts, the left ventricle was entered in 96.1 %. Major complications were aortic puncture (0.7%), pericardial puncture/suspected tamponade (3.2%), systemic arterial embolism (1.1%), and suspected perforation of the inferior vena cava (0.4%). There were no deaths. Although less frequently performed during the last decade, the transseptal catheterization technique has a complication rate of the same magnitude as during periods when this method was more commonly applied.
Coronary artery perforation during coronary angioplasty
Authors: Grollier G. , Bories H. , Commeau P. , Foucault J. P. , Potier J. C. 
Published: February 2009

AbstractIn one patient percutaneous transluminal coronary angioplasty was complicated by coronary artery perforation of the left anterior descending coronary artery with light pericardial effusion. The outcome was favorable without either pericardiocentesis or emergency surgery.
Sinoatrial block induced by oral diltiazem
Authors: Imamura T. , Koiwaya Y. , Nakamura M. 
Published: February 2009

AbstractA 58‐year‐old man with variant angina who had no history suggestive of sinus node dysfunction experienced palpitation with pulse deficit after 8 days of diltiazem treatment, 240 mg per day. Electrocardiogram (ECG) revealed frequent occurrence of sinoatrial block. After discontinuation of diltiazem, an ambulatory ECG demonstrated gradual reduction of the occurrence of sinoatrial block, and no recurrence 8 hours after the last dose of the drug. One should note that diltiazem induces not only sinus node suppression and atrioventricular conduction disturbance, but also sinoatrial block.
Noninvasive assessment of indomethacin therapy in patent ductus arteriosus in preterm infants
Authors: Kashani I. A. , Nulton G. D. , Sahn D. J. 
Published: February 2009

AbstractWe performed 138 serial two‐dimensional (2‐D), M‐mode, and Doppler echocardiographic studies to assess the efficacy of intravenous indomethacin (INDO) therapy for patent ductus arteriosus (PDA) in 41 preterm infants. Nine infants expired without sufficient echo data to warrant inclusion in the study. Of the remaining 32 infants, 12 (Group 1) required ligation despite INDO therapy, 18 (Group 2) responded to INDO or spontaneously closed their PDAs, and 2 were transferred to other hospitals with their PDAs still open and were lost to followup. The presence of PDA was verified by 2‐D echo vizualization of the ductus (high parasternal short‐axis views) and Doppler demonstration of high velocity ductal flow toward the main pulmonary artery. The ratio of PDA lumen to aortic root inner diameter (Ao) was measured as well. Indication for surgical ligation was failure of the PDA to close after 3 or more courses of INDO. In Group 1, the PDA/Ao ratio was 0.45±0.10 standard error of the mean (SEM) pre‐INDO, and 0.40±0.12 SEM post‐INDO (immediately before ligation). In Group 2, the PDA/Ao ratio was 0.42±0.11 SEM pre‐INDO, and 0.19±0.14 SEM at the end of INDO course (p<0.001), with 12 infants showing no ductal flow by Doppler. Follow‐up six months after INDO therapy has shown no residual murmurs or other evidence of PDA in any INDO‐closed infant. Five of the 18 infants have undergone repeated echocardiographic studies, all of which were negative for PDA patency or flow. It is concluded that the combination of 2‐D echo and Doppler studies and to some extent, PDA/Ao ratio are a fairly reliable means for assessing the efficacy of therapy and patency of ductus arteriosus.
Radionuclide left ventricular function curve during atrial pacing in normal subjects and in patients with coronary artery disease
Authors: Rozenman Y. , Weiss A. T. , Gotsman M. S. 
Published: February 2009

AbstractWe used radionuclide angiography during right atrial pacing to assess left ventricular function in 7 normal subjects and 20 patients with coronary artery disease. A left ventricular function curve relating stroke volume to end‐diastolic volume was plotted for each patient. The normal pacing ventricular function curve was a straight line passing through the origin of axes. The pacing ventricular function curve was abnormal in 18 of the 20 patients with coronary artery disease, and three different shaped curves were obtained, reflecting decreased contractile force for the same end‐diastolic volume during ischemia. Cardiac output and blood pressure do not change during atrial pacing, thus the Frank‐Starling relationship is evaluated by this method during almost experimentally controlled conditions. Relating stroke volume to end‐diastolic volume, and not end‐diastolic pressure, distinguishes between overall left ventricular systolic function and left ventricular compliance.
Nonprogression of coronary artery atherosclerosis in homozygous familial hypercholesterolemia after 31 months of repetitive plasma exchange
Authors: Stein E. A. , Adolph R. , Rice V. , Glueck C. J. , Spitz H. B. 
Published: February 2009

AbstractThe effects of plasma exchange performed every two weeks for 31 months in combination with diet and drug therapy were studied in a patient with receptor‐defective homozygous familial hypercholesterolemia. Coronary angiography performed three years prior to commencing plasma exchange was compared to angiography 31 months after starting the program. Comparison of the angiograms taken six years apart showed no progression of coronary atheroma in the main left coronary artery in which a 30% narrowing was originally seen. An internal mammary artery‐coronary artery bypass remained widely patent and showed no development of atherosclerosis. Plasma cholesterol levels were reduced 46% by plasma exchange, diet and drug compared to diet and drug alone. Achilles tendon xanthoma diminished significantly. It appears that plasma exchange combined with diet and drug therapy, while not producing regression of existing atheromatous lesions, does retard or prevent further progression.
Progression of myocardial dysfunction in asymptomatic patients with severe aortic insufficiency
Authors: Scognamiglio R. , Fasoli G. , Dalla VOLTA S. 
Published: February 2009

AbstractBy serial echocardiographic examinations, we investigated the parameters predictive of left ventricular (LV) deterioration in 38 asymptomatic patients with severe aortic insufficiency (AI). Based on their first echocardiograms, patients were divided into two groups: Group 1 (n = 30) had normal fractional shortening (FS); Group 2 (n = 8) had abnormal FS. Similar values of LV end‐diastolic, end‐systolic dimension (EDD, ESD), FS, radius/thickness ratio, and mean wall stress characterized stable and unstable patients of Group 1; unstable patients, who developed abnormal values of FS during the follow‐up, showed significantly lower values of the contractility index (peak arterial pressure/end‐systolic volume ratio, PAP/ESV). The unstable patients, moreover, were distributed near the onset of the downslope and moved along the descending limb of the curvilinear pump performance‐myocardial contractility relation. No changes occurred in Group 2 patients during follow‐up. Three unstable Group 1 patients and the 8 patients of Group 2 underwent aortic valve replacement (AVR): postoperative EDD was less than 65 mm and the changes from before to after AVR were greater than 11 mm in all cases. We conclude that the pump performance‐myocardial contractility relation visualized the unstability of LV function in asymptomatic patients and that AVR can be delayed after the appearance of an abnormal FS for at least 36 months.
Effects of atenolol in patients with reciprocating supraventricular tachycardia
Authors: Pimenta J. , Britto Pereira C. 
Published: February 2009

AbstractWe studied 12 patients with crisis of paroxysmal reciprocating supraventricular tachycardia before and after intravenous injection of 5 mg of atenolol. The patients were then followed for periods ranging from 6 to 50 months (median 34 months). During this time, they received oral atenolol therapy, at 200 mg for the first two weeks, and 100 mg daily thereafter. Tachycardia was due to reciprocation within the atrioventricular node in 9 patients, and to pre‐excitation in 3 patients. Atenolol slowed the sinus rate, prolonged the atrioventricular conduction time, and increased the atrial cycle length at which atrioventricular nodal Wenckebach phenomenon occurred. During the tachycardia, atenolol increased the tachycardia cycle length, due to prolongation of the intranodal atrioventricular conduction time. Of the 11 patients who were observed for the full period, 7 had no further episodes of arrhythmia. One patient (with left‐sided pre‐excitation) failed to respond to any antiarrhythmic medication, one patient remained free of symptoms for two years, but received an atrial pacemaker for control of the tachycardia at the end of this period. Two patients (one with dual atrioventricular nodal pathways, and one with concealed left‐sided pre‐excitation) await other treatment for their tachycardia, after remaining free of symptoms for one and two years, respectively. These findings suggest that atenolol is an effective beta blocker for use in controlling arrhythmias in patients with reciprocating supraventricular tachycardia, for use in once daily dosage, and is a medication largely free of side effects.
An unusual complication of coronary bypass surgery
Authors: Lyons C. , Chaudhry M. , O'HERN J. 
Published: February 2009

AbstractFour cases are discussed that had a preventable complication following coronary bypass surgery. Infection was associated with retained transthoracic pacemaker leads. These case reports should serve to remind us of the importance of removal of all possible foreign objects from our patients to prevent rare but serious complications.
Syncope secondary to ventricular asystole in an endurance athlete
Authors: Yerg II J. E. , Seals D. R. , Hagberg J. M. , Ehsani A. A. 
Published: February 2009

AbstractVasovagal syncope occurred in an endurance athlete prior to exercise as the result of a 22‐second episode of complete heart block with ventricular asystole and subsequent sinoatrial arrest. The subject suffered a head injury but recovered without sequelae. Noninvasive cardiac testing was unrevealing. Although lesser disturbances of cardiac rhythm and conduction in athletes are not uncommon, extreme changes as illustrated by this case are rare. Close supervision of athletes undergoing exercise testing is advised.
Plasma concentrations of high‐density lipoprotein (hdl)‐2 and hdl‐3 in myocardial infarction survivors and in control subjects
Authors: Brugger P. , Kullich W. C. , Klein G. , Kostner G. M. 
Published: February 2009

AbstractThe serum concentration of several lipids, including high‐density lipoprotein‐cholesterol (HDL‐C) and the HDL subfractions, HDL‐2‐C and HDL‐3‐C, were measured in 44 male and 26 female survivors of myocardial infarction and compared with those of a control group matched for age, sex, and body weight. Serum concentrations of total cholesterol (TC) and low‐density lipoprotein (LDL‐C) were significantly increased in patients as compared to control individuals. The total HDL‐C concentration was lower in patients than in controls. By differential quantitation of HDL subfractions with a new precipitation method using polyethylene glycol, it was found that HDL‐3‐C was not significantly different between female patients and controls. The reduction of HDL‐3‐C in male patients was only of borderline significance. HDL‐2‐C in contrast was highly significantly reduced in both male and female patients. The greatest difference between patients and controls was found in the HDL‐2/HDL‐3‐C ratio. It is therefore concluded that HDL‐2‐C quantitation is a valuable risk indicator for myocardial infarction yielding a better discrimination of patients from controls than total HDL‐C quantitation.
Exercise‐induced changes of left ventricular ejection time in noninvasive evaluation of chest pain
Authors: Romano M. , Chiariello M. , Carella G. , DiMaro T. , Cotecchia M. R. , Condorelli M. 
Published: February 2009

AbstractSignificance and clinical usefulness of exercise‐induced changes of noninvasive left ventricular ejection time, recorded by mechanocardiography, in detecting coronary artery disease is still controversial. We investigated the changes of the left ventricular ejection time (LVET), corrected for heart rate as ETI (LVET/√RR), after a standard 4‐min exercise by bicycle ergometer (50 W/min for 2 min, increased by 20 W after 2 min) in 56 male volunteers. They were invasively studied for typical or atypical chest pain. Thirty‐four had coronary artery disease (CAD) and the others served as controls. Immediately after exercise LVET shortened according to the rise in heart rate in both groups. ETI increased similarly. After 2 minutes from exercise ETI increased only in the CAD group, according to a longer LVET, in spite of the rise in heart rate. In contrast, ETI was unchanged in controls, according to a shortened LVET. Totally, 27/34 CAD patients and 9/22 controls had a greater ETI than at rest. Employing this Δ ETI as a “marker” of CAD we found a predictive accuracy of 74%. We suggest postexercise ETI could be a simple and inexpensive support to electrocardiogram in basic evaluation of subjects with chest pain.
Evidence of no interobserver variability in m‐mode echocardiography
Authors: De LEONARDIS V. , Cinelli P. 
Published: February 2009

AbstractLeft ventricular internal dimensions, septal and posterior wall thickness, aortic root diameter, and left atrial dimensions, were independently measured by two experienced interpreters on 50 consecutive routinely performed M‐mode echocardiograms. The purpose of this work was to evaluate the reproducibility of these measurements and to assess if a different “diagnostic effect” could be provided by the two readers. The extent of interobserver variability was calculated and expressed as a percent of the mean. No significant interobserver variability was found for all the measured echocardiographic parameters and the two interpreters gave rise to the same “diagnostic effects.” Therefore, the authors suggest following well stated guidelines to provide uniformity in the process of determining the boundaries of the structures to be measured and adjusting the actual measurements by multiplying by a conversion factor (representing the ratio between the number of 1 cm markers and the distance in centimeters between the first and the last marker), as opposed to interpolating between the marks on the recording paper.