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Sperm ultrastructure and spermatogenesis in the Japanese beetle Popillia japonica (Coleoptera, Scarabaeidae). Micron 2020; 135:102879. [PMID: 32416441 DOI: 10.1016/j.micron.2020.102879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 04/27/2020] [Accepted: 04/27/2020] [Indexed: 10/24/2022]
Abstract
Popillia japonica is an invasive scarab beetle native to Japan that in 1916 invaded New Jersey in USA. From that moment onwards, the insect has spread invading several US states, Canada, the Azores, Italy and, recently, Switzerland. It is a severe agricultural pest included in the EU priority pest list being able to feed on more than 300 plant species and having an important biotic potential. The general morphology of the reproductive apparatus shows paired testes, each of them having six testicular lobes grouped in threes. From the ventral part of each testicular lobe, each containing about 20 follicles, an efferent vessel originates that fuses with the other efferent vessels to form the deferent duct. A pair of long tubular accessory glands is present. The deferent ducts and accessory glands fuse together into an ejaculatory duct before entering the aedeagus. The sperm is a typical pterygote sperm, 110 μm long, composed of a head and a tail. In the head a three-layered acrosome of about 6 μm in length and a nucleus of about 18 μm long are present. During sperm maturation two C-shaped structures appear in the cytoplasm from the opposite sides of the nucleus that then disappear in late spermatids. In the tail a typical 9 + 9 + 2 flagellar axoneme and two mitochondrial derivatives are present. Moreover, in the head-tail transition region the centriolar adjunct forms a sheath from which three elongated accessory bodies originate. Two of these accessory bodies are placed alongside the axoneme, whilst the third one is placed beneath the mitochondrial derivatives. Mature sperm are grouped in cysts containing about 256 sperm cells. A morphological comparison with related species is provided.
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Single ventricle: Estimated cumulative irradiation during their life. ARCHIVES OF CARDIOVASCULAR DISEASES SUPPLEMENTS 2020. [DOI: 10.1016/j.acvdsp.2019.09.347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Taking benefit from European cooperation on HSPA. Eur J Public Health 2018. [DOI: 10.1093/eurpub/cky212.771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Low-intensity red and infrared laser effects at high fluences on Escherichia coli cultures. ACTA ACUST UNITED AC 2015; 48:945-52. [PMID: 26445339 PMCID: PMC4617122 DOI: 10.1590/1414-431x20154460] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Accepted: 06/09/2015] [Indexed: 11/22/2022]
Abstract
Semiconductor laser devices are readily available and practical radiation sources providing wavelength tenability and high monochromaticity. Low-intensity red and near-infrared lasers are considered safe for use in clinical applications. However, adverse effects can occur via free radical generation, and the biological effects of these lasers from unusually high fluences or high doses have not yet been evaluated. Here, we evaluated the survival, filamentation induction and morphology of Escherichia coli cells deficient in repair of oxidative DNA lesions when exposed to low-intensity red and infrared lasers at unusually high fluences. Cultures of wild-type (AB1157), endonuclease III-deficient (JW1625-1), and endonuclease IV-deficient (JW2146-1) E. coli, in exponential and stationary growth phases, were exposed to red and infrared lasers (0, 250, 500, and 1000 J/cm2) to evaluate their survival rates, filamentation phenotype induction and cell morphologies. The results showed that low-intensity red and infrared lasers at high fluences are lethal, induce a filamentation phenotype, and alter the morphology of the E. coli cells. Low-intensity red and infrared lasers have potential to induce adverse effects on cells, whether used at unusually high fluences, or at high doses. Hence, there is a need to reinforce the importance of accurate dosimetry in therapeutic protocols.
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Low-level red laser therapy alters effects of ultraviolet C radiation on Escherichia coli cells. ACTA ACUST UNITED AC 2015; 48:939-44. [PMID: 26445338 PMCID: PMC4617121 DOI: 10.1590/1414-431x20154459] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2014] [Accepted: 04/23/2015] [Indexed: 11/29/2022]
Abstract
Low-level lasers are used at low power densities and doses according to clinical
protocols supplied with laser devices or based on professional practice. Although use
of these lasers is increasing in many countries, the molecular mechanisms involved in
effects of low-level lasers, mainly on DNA, are controversial. In this study, we
evaluated the effects of low-level red lasers on survival, filamentation, and
morphology of Escherichia colicells that were exposed to ultraviolet
C (UVC) radiation. Exponential and stationary wild-type and
uvrA-deficientE. coli cells were exposed to a
low-level red laser and in sequence to UVC radiation. Bacterial survival was
evaluated to determine the laser protection factor (ratio between the number of
viable cells after exposure to the red laser and UVC and the number of viable cells
after exposure to UVC). Bacterial filaments were counted to obtain the percentage of
filamentation. Area-perimeter ratios were calculated for evaluation of cellular
morphology. Experiments were carried out in duplicate and the results are reported as
the means of three independent assays. Pre-exposure to a red laser protected
wild-type and uvrA-deficient E. coli cells against
the lethal effect of UVC radiation, and increased the percentage of filamentation and
the area-perimeter ratio, depending on UVC fluence and physiological conditions in
the cells. Therapeutic, low-level red laser radiation can induce DNA lesions at a
sub-lethal level. Consequences to cells and tissues should be considered when
clinical protocols based on this laser are carried out.
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Nucleotide excision repair pathway assessment in DNA exposed to low-intensity red and infrared lasers. ACTA ACUST UNITED AC 2015; 48:929-38. [PMID: 26445337 PMCID: PMC4617120 DOI: 10.1590/1414-431x20154457] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Accepted: 03/17/2015] [Indexed: 02/02/2023]
Abstract
Low-intensity lasers are used for prevention and management of oral mucositis induced
by anticancer therapy, but the effectiveness of treatment depends on the genetic
characteristics of affected cells. This study evaluated the survival and induction of
filamentation of Escherichia coli cells deficient in the nucleotide
excision repair pathway, and the action of T4endonuclease V on plasmid DNA
exposed to low-intensity red and near-infrared laser light. Cultures of wild-type
(strain AB1157) E. coli and strain AB1886 (deficient in uvrA
protein) were exposed to red (660 nm) and infrared (808 nm) lasers at various
fluences, powers and emission modes to study bacterial survival and filamentation.
Also, plasmid DNA was exposed to laser light to study DNA lesions produced in
vitro by T4endonuclease V. Low-intensity
lasers:i) had no effect on survival of wild-type E.
coli but decreased the survival of uvrA protein-deficient
cells,ii) induced bacterial filamentation, iii)
did not alter the electrophoretic profile of plasmids in agarose gels,
andiv) did not alter the electrophoretic profile of plasmids
incubated with T4 endonuclease V. These results increase our understanding
of the effects of laser light on cells with various genetic characteristics, such as
xeroderma pigmentosum cells deficient in nucleotide excision pathway activity in
patients with mucositis treated by low-intensity lasers.
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European Public Health News * EUPHA President's Column * EUPHA office news * Message from the Who Regional Director for Europe: Non-Communicable Diseases, Inequalities and Development * Health at a Glance: Europe 2010 * Public Health and Welfare - Welfare Development and Health, 10-12 November 2011, the Bella Centre, Copenhagen, Denmark. Eur J Public Health 2011. [DOI: 10.1093/eurpub/ckr022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Two cooperative versions of the Guessing Secrets problem. Inf Sci (N Y) 2009. [DOI: 10.1016/j.ins.2009.06.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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[Enzyme replacement therapy in a boy with infantile Pompe disease: cardiac follow-up]. Arch Pediatr 2008; 15:1760-4. [PMID: 18995995 DOI: 10.1016/j.arcped.2008.09.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2008] [Revised: 06/04/2008] [Accepted: 09/08/2008] [Indexed: 11/19/2022]
Abstract
Pompe disease is an autosomal recessive glycogen storage disorder caused by acid-alpha-glucosidase deficiency. The infantile form is usually fatal by 1 year of age in the absence of specific therapy. We report the cardiac follow-up of a 4-month-old boy treated with enzyme replacement therapy (ERT) for 8 months. The patient had no cardiac failure at the age of 1 year. Before starting ERT, ECG showed a shortened PR interval, with huge QRS complexes and biventricular hypertrophy; echocardiography demonstrated major hypertrophic cardiomyopathy. The QRS voltage (SV1+RV6) decreased from 13 to 2.9 mV after 32 weeks of ERT, suggesting a progressive reduction of cardiac hypertrophy and intracellular glycogen excess. The PR interval increased from 60 to 90 ms. A block of the right bundle branch appeared after 13 weeks of treatment. The indexed left ventricular mass decreased from 240 to 90 g/m2 after 30 weeks of ERT. The left ventricular ejection fraction decreased transitorily between the 5th and the 15 th weeks of treatment. In summary, ERT is an efficient therapeutic approach for the cardiomyopathy of infantile Pompe disease. However, the possible occurrence of a right bundle branch block and a transitory alteration in the ejection fraction highlight the importance of cardiac follow-up.
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SFP-P125 – Cardiologie – Anasarque révélant un syndrome Camptodactylie-Arthropathie-Coxa vara-Péricardite. Arch Pediatr 2008. [DOI: 10.1016/s0929-693x(08)72255-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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[A monocenter experience of ventricular septal defects treated by catherization]. ARCHIVES DES MALADIES DU COEUR ET DES VAISSEAUX 2007; 100:380-5. [PMID: 17646761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
INTRODUCTION Studies on ventricular septal defects closure by catheterization confirm its feasibility without reporting clearly the indications and difficulties encountered. PATIENTS AND RESULTS From 2001 to end-2006, 22 patients benefited from 26 ventricular septal defects closure (15 muscular and 7 membranous) at a median age and weight of 2.1 years and 12.5 kg, respectively. A perventricular catheterization was performed in 2 cases. Eighteen patients (82%) benefited from 21 prostheses with success. The closure was associated to surgery in 9 cases (41%) whereas it substituted surgery in the other 13 cases (59%). The median duration of the procedure was significantly longer in case of muscular ventricular septal defects (215 min (175-510) vs. 170 min (120-225), p=0.04). Major complications are reported in 5 cases out of 26 catheterization (19%), including one death related to conduction block, occurring after the implantation of two prostheses in a patient with aortopulmonary transposition. All other associated cardiac diseases have been corrected. A prosthetic emboli occurred in one case, 1.5 months after implantation. It had been retrieved by catheterization. Two patients died afterwards from non-procedure-related causes. After a median follow-up of 1.1 years, the 17 other patients remained asymptomatic. One child with a perimembranous prosthesis presents a paroxystic atrio-ventricular block. CONCLUSION Even though indispensable for the curative treatment of several congenital cardiac diseases including non-operable ventricular septal defects, this procedure is related to a substantial rate of mortality and morbidity. The risk of atrio-ventricular block must be adequately considered in case of membranous ventricular septal defects.
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[Prevention of AIDS in high school students]. SOINS; LA REVUE DE REFERENCE INFIRMIERE 2001:45. [PMID: 12008604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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15
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Acute renal hemodynamic and cardiac hemodynamic effects of endogenous adenosine accumulation in chronic heart failure. Eur J Heart Fail 2000. [DOI: 10.1016/s1388-9842(00)80323-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Development of a densitometric method for the determination of cephalexin as an alternative to the standard HPLC procedure. J Pharm Biomed Anal 1998; 18:271-4. [PMID: 9863969 DOI: 10.1016/s0731-7085(98)00167-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A HPTLC-densitometric method was developed in order to obtain a reliable procedure for routine analysis of cephalexin in pharmaceutical formulations. Optimization of TLC conditions for the densitometric scanning was reached by eluting HPTLC silica gel plates in an horizontal developing chamber. Quantitation of cephalexin was performed in single beam reflectance mode by using a computer-controlled densitometric scanner and applying a five-point calibration. A linear regression has been found in the 200-1000 ng range. The setup method is precise, reproducible and accurate. Recovery was also assessed by comparison with the HPLC USP XXIII alternate method. In this case HPTLC-densitometry appears worth of consideration as being relatively inexpensive and time-saving (up to 12 samples can be determined simultaneously in less than 15 min with a solvent consumption of about 15 ml). The results suggest that the proposed method may be used in place of HPLC for the routine quantitation of cephalexin in both pure and dosage forms.
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Abstract
BACKGROUND The aim of this study was to establish the feasibility, safety, and diagnostic accuracy of the dipyridamole echocardiography test in patients with severe aortic valve stenosis for noninvasive detection of coexisting coronary artery disease. METHODS The high-dose dipyridamole echocardiography test was performed in 52 patients with severe aortic stenosis; all patients also underwent coronary angiography, independent of test results, before cardiac operation. RESULTS The dipyridamole echocardiography test was completed without major complications. One patient had transient atrial fibrillation that was reversed by aminophylline. Thirty-one patients (60%) had a negative test result; all had normal coronary arteries. Ten of the 21 patients (48%) with a positive test result had coexisting coronary artery disease. The positive predictive value of the dipyridamole echocardiography test for detection of coronary disease in patients with severe aortic stenosis was 48%. The negative predictive value was 100%. The sensitivity was 100% and the specificity was 74%. CONCLUSIONS Dipyridamole echocardiography is a safe and feasible tool in patients with severe aortic stenosis eligible for a cardiac operation. A negative test result reliably rules out a significant stenosis, whereas a positive one is much less accurate in predicting coronary artery disease.
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Ambulatory follow-up of aortic dissection: comparison between computed tomography and biplane transesophageal echocardiography. INTERNATIONAL JOURNAL OF CARDIAC IMAGING 1996; 12:105-11. [PMID: 8864789 DOI: 10.1007/bf01880741] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
UNLABELLED Aim of the study was to assess the relative usefulness of transesophageal echocardiography (TEE) and X-ray computed tomography (CT) in the follow-up of patients who survived an aortic dissection. MATERIALS AND METHODS We evaluated 44 patients (age = 57 +/- 12 years) with treated aortic dissection: 14 had a De Bakey type I, 20 a type II and 1 patient a type III dissection treated surgically: 1 patient had a type I, 1 a type II and 7 a type III dissection treated medically. All entered an outpatient follow-up program with serial evaluations at 1, 6 and 12 months after initial diagnosis by dual noninvasive imaging protocol. A contrast-enhanced CT scan and a TEE with biplane probe were performed on the same day and in random order. RESULTS A total of 252 evaluations with both CT and TEE were considered. A completely normal study was found in 45 TEE and 48 CT evaluations. The following abnormal findings could be documented by one or both techniques: thrombus in the false lumen (TEE: n = 48; CT: n = 45 evaluations); intimal flap (TEE and CT: n = 68); aortic dilatation (TEE and CT: n = 15); pericardial effusion (TEE and CT: n = 3); aortic pseudoaneurysm (TEE: n = 2; CT: n = 3); isthmic coarctation (TEE and CT: n = 1). Regarding the presence or absence of these abnormalities, which are within the diagnostic domain of both imaging techniques, the results were fully concordant in 245 studies, and discordant in 7, with an overall agreement of 97%. In addition, some abnormal findings could be detected by TEE only: aortic insufficiency (n = 36); intimal tear (n = 25); spontaneous echocontrast effect in the false lumen (n = 39 evaluations). Other abnormal findings could be detected by CT only: a pleural effusion in 4, a truncus anonymous dissection in 1, a pseudoaneurysm due to suture dehiscence of the distal anastomosis of the ascending aorta in 1 evaluation (which yielded ambiguous results by TEE, with turbulent flow departing from the graft). CONCLUSION Both CT and TEE are atraumatic, safe and accurate techniques for serial follow-up imaging of patients treated for aortic dissection. Information provided by CT is largely redundant, rather than additive, to that provided by TEE. The latter should be probably preferred for shorter imaging time, accuracy and convenience, although CT might still play a role in selected cases of ambiguous TEE results.
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Mechanisms of regional ischaemic changes during dipyridamole echocardiography in patients with severe aortic valve stenosis and normal coronary arteries. Heart 1996; 75:492-7. [PMID: 8665343 PMCID: PMC484348 DOI: 10.1136/hrt.75.5.492] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
OBJECTIVE Vasodilator stress echocardiography can cause myocardial ischaemia in patients with severe aortic valve stenosis and angiographically normal coronary arteries. The aim of the study was to determine the mechanism of ischaemia in this clinical model. METHODS The study group comprised patients with severe aortic valve stenosis and normal coronary arteries: 25 patients (17 males, eight females; age 63 (SD 11) years) underwent a high dose (up to 0.84 mg/kg over 10 min) dipyridamole echocardiography test both before (2-4 d) and after (10-15 d) aortic valve replacement. Mean aortic pressure gradient was 96 (15) mm Hg, with a left ventricular mass index of 228 (49) g/m2. The dipyridamole echocardiography test was well tolerated and interpretable in all patients. RESULTS Dipyridamole infusion induced chest pain in seven patients before and in no patient after surgery (28 v 0%, P < 0.01), ST segment depression in 12 patients before and two after surgery (48 v 8%, P < 0.01), and a transient regional dyssynergy in 10 patients before and two after surgery (40 v 8%, P < 0.01). In the preoperative evaluation, patients with an echocardiographically positive dipyridamole echocardiography test were comparable with patients with negative test as far as left ventricular mass index [240 (67) v 230 (64) g/m2, NS] and mean aortic pressure gradient [95 (22) v 92 (21) mm Hg, NS] were concerned. When compared to the preoperative assessment, the resting echo assessment in the postoperative evaluation showed unchanged values of left ventricular mass index [pre 228 (49) g/m2 v post 220 (36) g/m2, NS], but markedly decreased values of mean aortic gradient [pre 95 (15) mm Hg v post 22 (5) mm Hg, P < 0.01] and left ventricular wall stress index [pre 134 (30) g/cm2 v post 89 (19) g/cm2]. CONCLUSIONS Dipyridamole echocardiography is a suitable clinical technique for assessing the ischaemic vulnerability of the left ventricle in severe aortic valve stenosis with angiographically normal coronary arteries. The frequent disappearance of the ischaemic response early after aortic valve replacement suggests that haemodynamic factors such as compressive diastolic wall stress or afterload reduction are important components of myocardial ischaemic vulnerability under these circumstances.
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Prognostic value of the dipyridamole echocardiography test performed early after aortocoronary bypass surgery. Echocardiography 1993; 10:107-12. [PMID: 10148118 DOI: 10.1111/j.1540-8175.1993.tb00019.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
It has been demonstrated that high dose (up to 0.84 mg/kg over 10 min) dipyridamole echocardiography stress testing is feasible even in the first few hours after coronary artery bypass graft surgery and can be used to assess the beneficial physiological effects of coronary revascularization as well as graft patency. The aim of this study was to assess the role of dipyridamole echocardiography testing performed shortly after myocardial revascularization in the stratification of prognosis during follow-up. We studied 49 consecutive patients (45 males and 4 females; mean age 56 +/- 8 years) referred to our institute for elective myocardial revascularization. Six patients had single, 14 double, and 29 triple vessel disease. Forty-two left internal mammary artery grafts, 16 sequential venous grafts, and 45 single venous grafts were performed. All patients were submitted to dipyridamole echocardiography testing before (range 1-3 days) and shortly after (range 5-7 days) myocardial revascularization, always with the patients off antianginal medication. An arbitrary wall-motion score grading from 0 to 3 (normal, hypokinesia, akinesia, and dyskinesia) was applied to the seven regions into which the left ventricle was divided. Before surgery 48 patients showed wall-motion abnormalities during the test (47 patients also presented ECG changes). Angina occurred in 48 patients. One patient had ischemic ECG changes and angina. The mean wall-motion score was 3.11 per patient before and 6.5 per patient after the test (P less than 0.001).(ABSTRACT TRUNCATED AT 250 WORDS)
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[Territorial organization of a surveillance system for the patient at risk of sudden death]. Minerva Anestesiol 1991; 57:1637-44. [PMID: 1795801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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[Hematoma of the adrenal gland in the newborn infant. Clinical course. Presentation of 20 cases]. ARCHIVIO ITALIANO DI UROLOGIA, NEFROLOGIA, ANDROLOGIA : ORGANO UFFICIALE DELL'ASSOCIAZIONE PER LA RICERCA IN UROLOGIA = UROLOGICAL, NEPHROLOGICAL, AND ANDROLOGICAL SCIENCES 1991; 63 Suppl 2:115-7. [PMID: 1836649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The Authors stress the importance of a correct sonographic study in the follow-up of neonatal adrenal hemorrhage; the diagnostic conclusion are: the best criterion for differential diagnosis is the chronological variability. However the differential diagnosis is rather easy. The differential d. usually is against cystic-neuroblastoma, cortical renal cyst, adrenal abscess. They remark that laparatomy is unnecessary.
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Effect of thyrotropin releasing hormone (TRH) on acetylcholine release from different brain areas investigated by microdialysis. Br J Pharmacol 1991; 102:363-8. [PMID: 1901747 PMCID: PMC1918036 DOI: 10.1111/j.1476-5381.1991.tb12179.x] [Citation(s) in RCA: 70] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
1. The effect of thyrotropin releasing hormone (TRH) administration upon acetylcholine (ACh) release in freely moving rats was investigated by means of transversal microdialysis coupled to h.p.l.c. TRH administered either s.c. or via local perfusion increased the ACh release from cortex and hippocampus but not from the striatum. The increase in ACh release was maintained after 7 days of s.c. administration of TRH. 2. After s.c. injection of the neuropeptide, the increase in ACh release was dose-dependent and reached a maximum at 40 min after administration. The maximal percentage increases were 18, 52, 66 and 89% at doses of 1, 2.5, 5 and 10 mg kg-1 and 35, 48 and 54% at doses of 2.5, 5 and 10 mg kg-1 in the cortex and hippocampus, respectively. The effect of TRH was dependent on neuronal activity since it was completely inhibited by perfusion with tetrodotoxin (TTX), 5 X 10(-7) M. 3. Perfusion with TRH, 2.5 micrograms microliters-1, caused 198% and 150% increase in ACh release 60 and 80 min after the beginning of the perfusion in the cortex and hippocampus, respectively. After this initial peak, a 100% increase in ACh release persisted throughout the perfusion. 4. Systemic TRH administration was followed by marked hyperactivity and stereotyped behaviour that showed a time course shorter than that of the increase in ACh release. 5. These findings demonstrate that TRH exerts a strong stimulant action on cortical and hippocampal cholinergic pathways.
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Oxiracetam and D-pyroglutamic acid antagonize a disruption of passive avoidance behaviour induced by the N-methyl-D-aspartate receptor antagonist 2-amino-5-phosphonovalerate. Psychopharmacology (Berl) 1990; 100:130-1. [PMID: 2153307 DOI: 10.1007/bf02245803] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Intracerebroventricular administration (6 micrograms/2 microliters) of D-2-amino-5-phosphonovalerate (AP-5), a specific antagonist of the NMDA receptors, prior to training impaired the passive avoidance in a retention test in rat. Pretreatment with oxiracetam and D-pyroglutamic acid at doses ranging from 50 to 500 mg/kg SC dose-dependently prevented the disruptive effect of AP-5. This finding indicates that an interaction with excitatory amino acid NMDA type receptors may be important in behavioural effects of the two pyrrolidinone derivatives.
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[Primary malignant tumors of the liver in children. Presentation of 4 cases]. Minerva Pediatr 1976; 28:1969-84. [PMID: 1012226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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[Erosive aneurysm of the aortic arch]. JOURNAL DE RADIOLOGIE, D'ELECTROLOGIE, ET DE MEDECINE NUCLEAIRE 1970; 51:645-646. [PMID: 5489104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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[5 cases of inhalation of talc]. Minerva Pediatr 1970; 22:1772-4. [PMID: 5480443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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[Gamma globulin interference with lymphocytic cytoplasmic RNA and its immunoelectrophoretic tracing in the newborn]. RIVISTA DI CLINICA PEDIATRICA 1969; 82:360-3. [PMID: 4103059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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[Wiedemann and Beckwith syndrome. Report of a clinical case]. RIVISTA DI CLINICA PEDIATRICA 1969; 82:422-7. [PMID: 5405498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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[Lumbosacral spinal agenesis. Case report]. RIVISTA DI CLINICA PEDIATRICA 1969; 82:438-44. [PMID: 5405500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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[Effect of ACTH on cytoplasmic RNA of lymphocytes]. RIVISTA DI CLINICA PEDIATRICA 1969; 82:341-4. [PMID: 4325477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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34
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[A case of neonatal hemangiomatosis with spontaneous recovery]. RIVISTA DI CLINICA PEDIATRICA 1969; 82:364-7. [PMID: 5405490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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35
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[Oral iron loading curves with or without aminoacids in the hyposideremic child]. RIVISTA DI CLINICA PEDIATRICA 1969; 82:462-4. [PMID: 5405503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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36
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[Capillary hematocrit in the neonatal period]. RIVISTA DI CLINICA PEDIATRICA 1969; 82:34-9. [PMID: 5381899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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37
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[Changes of lymphocytic RNA during corticoid therapy in immunological pathology]. RIVISTA DI CLINICA PEDIATRICA 1969; 82:1-4. [PMID: 5381896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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38
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[Hemorrhagic disease of the newborn. Clinical considerations on 119 cases]. RIVISTA DI CLINICA PEDIATRICA 1968; 81:1130-1133. [PMID: 5759382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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39
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[5 cases of talc aspiration]. RIVISTA DI CLINICA PEDIATRICA 1968; 81:1129. [PMID: 5759381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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40
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[On 26 cases of bacterial purulent meningitis with special reference to the therapeutic problem]. GIORNALE DI MALATTIE INFETTIVE E PARASSITARIE 1968; 20:462-4. [PMID: 5744466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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