Dispersion des températures d'homogénéisation des inclusions aqueuses: ébullition ou division par étranglement?

in Chemical Geology (1982), 37

Une approche structurale pour l'analyse input-output : un premier bilan

in Economie Appliquée (1982), (1-2), 203-229

L'uguaglianza delle oppoertunità : slogan o realta ?

in Rinascita della Scuola : Bimestrale Internazionale di Cultura, Szienza, Educazione (1982), 30

Release of thromboxane B2 during adult respiratory distress syndrome and its inhibition by non steroidal anti-inflammatory substances in man

in Archives Internationales de Pharmacodynamie et de Thérapie (1982), 259

Actinic granulomas and relapsing polychondritis.

in Acta Dermato Venereologica (1982), 62(6), 531-3

A patient developed concomitantly chondritis of the two auricles, diffuse cutaneous vasculitis and actinic granulomas. Alterations in skin and cartilage were prominent in the elastic tissue. Anticollagen ... [more ▼]

A patient developed concomitantly chondritis of the two auricles, diffuse cutaneous vasculitis and actinic granulomas. Alterations in skin and cartilage were prominent in the elastic tissue. Anticollagen type II antibodies were absent from the serum and there was no deposit of immunoreactants in cartilages. In this form of relapsing polychondritis, the pathomechanism resembles that of diffuse actinic arteritis as proposed by O'Brien. It is concluded that relapsing polychondritis may represent a heterogeneous syndrome with regard to its pathogenesis. [less ▲]

Fixation de ferritine cationisee a la surface des cretes palatines du rat.

in Bulletin de l'Association des Anatomistes (1982), 66(192), 117-25

Recently, we suggested that the cell coat of the surface epithelial cells of the palatal shelves and especially its sialyl groups are implied in the adhesion process which initiates the constitution of ... [more ▼]

Recently, we suggested that the cell coat of the surface epithelial cells of the palatal shelves and especially its sialyl groups are implied in the adhesion process which initiates the constitution of the secondary palate. In this work, use of cationized ferritin which interacts with anionic receptors of the plasma membrane give us the possibility to render these sialic acids visible. After five minutes incubation in presence of cationized ferritin, the labeling particles are distributed in monolayer over the plasmalemma of epithelial cells. Subsequent incubation in cationized ferritin free medium results in clustering of the marker followed by the detachment of the labeled patches. Otherwise, incubation in the presence of neuraminidase from Clostridium perfringens before the polycationic ligand contact prevents labeling. We think that lateral migration modifications of the anionic receptor could be associated with changes of the shelves capacity to adhere. [less ▲]

Evidence for a particular binding capacity of rat peritoneal macrophages to rat glomerular mesangial cells in vitro.

in European Journal of Clinical Investigation (1982), 12(3), 239-46

The adhesion of normal rat peritoneal macrophages to normal rat glomerular epithelial or mesangial cells has been studied in vitro after a 60 min incubation at 37 degree C. After washing, the cell ... [more ▼]

The adhesion of normal rat peritoneal macrophages to normal rat glomerular epithelial or mesangial cells has been studied in vitro after a 60 min incubation at 37 degree C. After washing, the cell preparations were examined by phase contrast or scanning electron microscopy. Quantitative studies were also performed using macrophages labelled with 99mTc tin colloids. Peritoneal macrophages predominantly adhered to the cultured mesangial cells. The percent-age of labelled macrophages adhering to these cells was about 10 times higher than that of labelled macrophages adhering to the cultured epithelial cells. This percentage increased proportionally to the number of labelled macrophages added, and was strongly reduced by the prior incubation of macrophagic cells with aggregated IgG, with anti-fibronectin IgG, or with F(ab')2 fragments of anti-fibronectin IgG. Furthermore, the macrophage-mesangial cell interaction was significantly reduced by the prior incubation of mesangial cells with anti-fibronectin IgG or with F(ab')2 fragments of anti-fibronectin IgG. The data demonstrate that normal rat peritoneal macrophages preferentially adhere in vitro to normal rat glomerular mesangial cells, and that this binding may be modulated, at least, by: (a) the Fc receptor binding activity of macrophages; (b) the fibronectin molecules available at the surface of macrophages and of mesangial cells. [less ▲]

Réapparition de formes graves de la maladie de Newcastle chez le pigeon

in Annales de Médecine Vétérinaire (1982), 126

Serum CBG, free and total cortisol and circadian patterns of adrenal function in normal pregnancy

in Journal of Steroid Biochemistry (1982), 16(2), 165-9

Parameters of cortisol metabolism were studied in pregnancy and early post partum and in non pregnant women. Total serum cortisol was measured by a specific radioimmunoassay and its unbound- and CBG-bound ... [more ▼]

Parameters of cortisol metabolism were studied in pregnancy and early post partum and in non pregnant women. Total serum cortisol was measured by a specific radioimmunoassay and its unbound- and CBG-bound fractions by equilibrium dialysis at 37 degrees C. CBG was measured directly, by an immunodiffusion method (true CBG) and indirectly, by the Scatchard analysis of its interaction with labelled cortisol (PT). During pregnancy the increases in true CBG and total cortisol concentrations were grossly parallel but the PT/true CBG ratio fell from almost 1 in non-pregnant and delivered women to 0.6 during the second half of pregnancy. At 6 p.m., unbound cortisol was significantly higher in outpatients during the 2d half of pregnancy than in non pregnant controls (0.017 vs 0.009 10(-6) mol/l). In hospitalized resting patients, unbound cortisol concentrations were the same in pregnant and non pregnant women except for a significantly higher level of unbound cortisol at midnight during the second half of pregnancy. Circadian variations of cortisol secretion persisted throughout pregnancy. It is concluded that in pregnancy (1) hypothalamic control of maternal adrenal secretion still prevails, (2) the increase in total cortisol is essentially due to that of CBG, (3) the unbound cortisol is normal or, at times, slightly increased and (4) variations in the PT/true CBG ratios may be explained by the presence of steroids (progesterone and 17-OH-progesterone) with a high affinity for CBG. The physiological significance of the mild hypercortisolism of pregnancy is discussed. [less ▲]

Antibodies to laminin in Chagas' disease

in Journal of Experimental Medicine (1982), 155(4), 1161-71

We have found that sera from humans with Chagas' disease and Rhesus monkeys infected with Trypanosoma cruzi contain IgM and IgG antibodies, which react with structures in a variety of connective tissues ... [more ▼]

We have found that sera from humans with Chagas' disease and Rhesus monkeys infected with Trypanosoma cruzi contain IgM and IgG antibodies, which react with structures in a variety of connective tissues. These antibodies react with laminin but not with various other purified connective tissue components like collagen types I, III, IV, and V, fibronectin, heparan sulfate (BM-1) proteoglycan, or chondronectin. The tissue-reacting antibodies were isolated by absorption to a laminin-Sepharose column. The bound fraction contained all the tissue-reacting antibodies. These antibodies strongly stained trypomastigotes and amastigotes, but weakly stained epimastigotes. These studies show that sera from T. cruzi-infected primates contain antilaminin antibodies, which may be produced by those host in response to a laminin-like molecule present in the parasite. [less ▲]

Detection of bovine leukaemia virus antibodies. Use of monoclonal antibody to increase sensitivity in an ELISA test.

in Archives Internationales de Physiologie et de Biochimie (1982), 90(3),

Neurophysin II - but not neurophysin I - concentrations are higher in lumbar than in ventricular cerebrospinal fluid in neurological patients

in Neuroendocrinology Letters (1982), 4

Purification and properties of the exocellular beta-lactamase of Actinomadura strain R39

in Biochimica et Biophysica Acta - General Subjects (1982), 700

The exocellular beta-lactamase (penicillin amido-beta-lactamhydrolase, EC 3.5.2.6) of Actinomadura R39 consists of one single polypeptide chain of molecular weight about 15 200. It exhibits a highly ... [more ▼]

The exocellular beta-lactamase (penicillin amido-beta-lactamhydrolase, EC 3.5.2.6) of Actinomadura R39 consists of one single polypeptide chain of molecular weight about 15 200. It exhibits a highly asymmetrical shape, has a low isoelectric point (at pH 5.0) and contains about 9.3% (w/w) of a polydeoxyribonucleotide with which it forms a rather stable complex. Removal of a substantial amount of this deoxyribonucleotide by treatment with DNAase I has no effect on the enzyme activity. The beta-lactamase has a wide spectrum of activity. Penicillins and delta 3-cephalosporins can be either good or poor substrates. Oxacillin, which is a poor substrate of most beta-lactamases from Gram-positive bacteria, is a good substrate of the beta-lactamase of Actinomadura R39. Its best substrate, however, is nitrocefin (kcat/Km: 2300 000 M-1.s-1; catalytic centre activity: 210 s-1). The kcat/Km values observed with some penicillins and delta 3-cephalosporins are similar to the values of the bimolecular rate constants that govern the formation of the acyl-enzyme intermediates between these antibiotics and the serine D-alanyl-D-alanine peptidase that is also secreted by the same strain Actinomadura R39. Such a relationship, however, is not observed with all the beta-lactam compounds tested. [less ▲]

Molecular mechanisms of glucocorticoid hormone action

in Journal of Molecular and Cellular Cardiology (1982), 14 Suppl 3

Art&fact

in Art&fact (1982), 1

Etude dendrométrique du pin de Corse (Pinus nigra Arn. var. corsicana)

in Bulletin des Recherches Agronomiques de Gembloux (1982), 17

La replantation de 71 doigts totalement amputes.

in Acta Chirurgica Belgica (1982), 82(3), 181-9

L'enrobage des semences: perspectives actuelles et futures.

in Annales de Gembloux (1982), 88(3),

Les nouvelles campagnes

in Sociologia Ruralis (1982), 12(1), 63-69

Research regarding the formation of micropores in a Ni-Ti-C alloy during directional solidification under vacuum

in Metallurgical reports CRM (1982), 60

The aim of this experiment was to study the origin and formation of microporosities in a Ni-5% Ti-0.2% C alloy which has been solidified and quenched, and to compare it to the previously developed ... [more ▼]

The aim of this experiment was to study the origin and formation of microporosities in a Ni-5% Ti-0.2% C alloy which has been solidified and quenched, and to compare it to the previously developed mathematical model. In the selected alloy, the porosity may result from gases formed during solidification (for example by chemical reaction). The results show that solidification conditions influence microporosity formation through the fraction eutectic and this suggests that it is possible to relate susceptibility to microporosity formation to the fraction eutectic. The results also confirm that for solid solution alloys such as Ni-5% Ti0.2% C, the fraction eutectic increases when the ratio G/R decreases. [less ▲]

Critical evaluation of serum uric acid levels in acute myocardial infarction.

in Clinica Chimica Acta (1982), 121(2), 147-57

Serial measurements of serum uric acid were performed on patients suffering from acute myocardial infarction. Nearly 80 percent of the cases demonstrated a fall in uric acid concentrations during the ... [more ▼]

Serial measurements of serum uric acid were performed on patients suffering from acute myocardial infarction. Nearly 80 percent of the cases demonstrated a fall in uric acid concentrations during the first two days of hospitalization and a subsequent return to initial levels within six to eight days. There was a relationship between the decrease in uric acid levels and the serum lactate dehydrogenase activity. No evidence could be found that male patients were hyperuricemic as compared to control subjects. However, female patients between 40 and 60 years of age demonstrated significantly higher uric acid levels than healthy women of corresponding ages, even after adjustment for diuretic use. [less ▲]

Dosage radioimmunologique de l'hormone placentaire somatotrope et mammotrope bovine

in Annales de Médecine Vétérinaire (1982), 126

Highly specific antisera were obtained from rabbits immunized with a purified preparation of Bovine Placental Somatomammotropin leading to the development of a sensitive radioimmunoassay. Teh values in ... [more ▼]

Highly specific antisera were obtained from rabbits immunized with a purified preparation of Bovine Placental Somatomammotropin leading to the development of a sensitive radioimmunoassay. Teh values in cotyledons extracts and foetal serum given by this methos are in agreement with those determined by radioreceptor assay using rabbit membranous receptors. Placental somatomammotrophic hormone is always present in pregnant cow sera from day 110 after fertilization but at low concentration (<=2 ng/ml) [less ▲]

Sensitivity in vivo of central alpha2 and opiate receptors after chronic treatment with various antidepressents

in Journal of Neural Transmission (1982), 54

La mesure de la hauteur des arbres au moyen d'un clinomètre.

in Bulletin de la Société Royale Forestière de Belgique = Tijdschrift van de Koninklijke Belgische Bosbouwmaatschappij (1982), 89(2), 57-62

Mesurer la hauteur d'un arbre avec une précision satisfaisante ne constitue sans doute plus aujourd'hui un problème, eu égard à la qualité des méthodes ou des appareils susceptibles d'être utilisés. Ces ... [more ▼]

Mesurer la hauteur d'un arbre avec une précision satisfaisante ne constitue sans doute plus aujourd'hui un problème, eu égard à la qualité des méthodes ou des appareils susceptibles d'être utilisés. Ces appareils, appelés "dendromètres", mettent en oeuvre des principes géométriques (triangles semblables) ou des principes trigonométriques (mesure de pentes). Parmi les premiers, on peut citer la célèbre planchette dendrométrique et le dendromètre de Franck, bien connu de nombreux forestiers belges. Parmi les seconds, on relève les dendromètres Blume-Leiss et Suunto (Dagnelie et al., 1977 ; Rondeux, 1978), conçus pour travailler avec une beaucoup plus grande précision mais malheureusement encore très peu utilisés chez nous. Cette situation est, selon toute vraisemblance, liée à un manque d'informations et à l'absence d'uniformité dans les méthodes de cubage généralement utilisées pour lesquelles nombre de forestiers se contentent d'une estimation rapide ("à l'oeil") de la hauteur, le plus souvent "marchande". L'utilisation de tarifs de cubage s'appuyant sur la connaissance de la grosseur et de la hauteur totale des arbres ou d'un critère de qualité des peuplements telle que la hauteur dominante (Dagnelie et al., 1976, 1977) nécessite cependant une estimation plus rigoureuse des hauteurs, étant donné que ces dernières concernent souvent un nombre limité d'arbres. Dans cette perspective, à défaut de disposer de dendromètres sophistiqués et relativement coûteux, l'utilisation d'un clinomètre nous paraît recommandable. Cet appareil, destiné à mesurer des angles (pentes) réalise, en effet, à de nombreux égards, un compromis intéressant en matière de coût, de commodité d'utilisation et de précision. Il peut en outre s'avérer plus efficace que les dendromètres actuels ou les suppléer pour résoudre divers problèmes de mesure inhérents aux conditions parfois difficiles de travail en forêt. [less ▲]

Effect of the haptoglobin phenotype on the size of a myocardial infarct.

in New England Journal of Medicine [=NEJM] (1982), 307(8), 457-63

We investigated the relation between haptoglobin (Hp) phenotypes and serum levels of various biochemical markers after myocardial infarction in 496 patients. In 122 subjects selected on the basis of short ... [more ▼]

We investigated the relation between haptoglobin (Hp) phenotypes and serum levels of various biochemical markers after myocardial infarction in 496 patients. In 122 subjects selected on the basis of short delays until hospitalization, patients with Hp 2-2 had higher cumulated creatine kinase activity than patients with Hp 1-1, or Hp 2-1 (P less than 0.05), as well as higher myoglobin concentrations (P less than 0.02) 12 to 28 hours after admission. Comparison of serum enzyme activities in the remaining 374 patients confirmed that Hp 2-2 patients had significantly higher total creatine kinase, creatine kinase isoenzyme MB fraction, aspartate aminotransferase, and lactate dehydrogenase peak levels. Complications of left ventricular failure were more frequent in these patients (P = 0.05). Our results suggest that Hp 2-2 patients have more severe myocardial infarctions than Hp 1-1 and Hp 2-1 patients, However, no difference in the distribution of haptoglobin phenotype was found between patients who had a myocardial infarction and healthy subjects, indicating that Hp 2-2 does not predispose to the occurrence of infarction. [less ▲]

The six-day rotation period of 1689 Floris-Jan - A new record among slowly rotating asteroids

in Astronomy and Astrophysics (1982), 115

Abstract image available at: http://esoads.eso.org/abs/1982A&A...115..257S

Immunohistological localization of three basement membrane components in various forms of epidermolysis bullosa.

in Journal of Cutaneous Pathology (1982), 9(5), 316-28

The skin biopsies of eight epidermolysis bullosa (EB) patients, representing epidermolytic, junctional and dermolytic forms of the disease were studied immunohistochemically using antibodies against ... [more ▼]

The skin biopsies of eight epidermolysis bullosa (EB) patients, representing epidermolytic, junctional and dermolytic forms of the disease were studied immunohistochemically using antibodies against collagen Types IV and V, and a proteoglycan. All these molecules are either basement membrane components or closely associated substances. In two types of EB simplex (subtype of the epidermolytic form) the splicing took place above the basement membrane, whereas the staining with all three antibodies remained localized to the floor of the blister. The herpetiform variant of EB simplex proved to be junctional, i.e. the separation occurred within the lamina lucida. One patient clinically classified as belonging to the junctional EB group, was found to have the epidermolytic form of the disease. In this case all antibodies were localized only on the floor of the blister. In the patients with the dermolytic form of EB, all the antibodies stained the roof of the blister. The immunofluorescence techniques are rapid and easy to perform and are therefore proposed as useful for routine clinical diagnosis. [less ▲]

Les leucémies chroniques. Aspects cliniques et thérapeutiques.

in Actualité Médicale Belge (1982), 9

Hormonal and metabolic adaptation to protein-supplemented fasting in obese subjects.

in International Journal of Obesity & Related Metabolic Disorders (1982), 6(2), 165-74

Thirty hospitalized, severely obese patients (40 +/- 2 yr, 82 +/- 4 percent weight excess) were submitted to a 13-d protein-supplemented fast (PSF) with 70 g milk proteins/d (1.26 MJ or 300 kcal). The ... [more ▼]

Thirty hospitalized, severely obese patients (40 +/- 2 yr, 82 +/- 4 percent weight excess) were submitted to a 13-d protein-supplemented fast (PSF) with 70 g milk proteins/d (1.26 MJ or 300 kcal). The mean weight loss during PSF was 5.4 +/- 0.3 kg corresponding to 422 +/- 39 g/d. Comparison of the urinary nitrogen excretion with daily protein intake revealed that the nitrogen balance was equilibrated during PSF. Blood glucose decreased moderately but significantly during the whole PSF period whereas plasma insulin was only reduced during the first 9 d and tended to rise thereafter. Plasma FFA increased rapidly and remained elevated until the end of the study (+ 60 per cent); serum total cholesterol and plasma triglycerides showed a 26 and a 35 per cent decrease respectively. Basal plasma glucagon was slightly increased. Due to the low sodium intake (42 mmol/d) urinary sodium excretion dropped rapidly. Simultaneously both systolic (-13 mmHg) and diastolic (-7 mmHg) arterial blood pressure decreased significantly. The biological tolerance was good: metabolic acidosis was prevented with sodium bicarbonate, excessive rise in serum uric acid was corrected with allopurinol and a marked decrease in serum potassium was avoided with an appropriate dose of spironolactone. Twenty-six patients could be weighed 6 to 15 months after PSF: 12 showed a further weight reduction (6.6 +/- 1.6 kg) and seven a discrete weight gain (1.0 +/- 0.4 kg). Thus, PSF was well accepted and was profitable in 19 out of our 30 patients. It should be restricted to cases of severe and refractory obesity and performed under careful medical supervision. [less ▲]

La vidarabine : un traitement antiherpétique actif par voie parentérale

in Revue Médicale de Liège (1982), 37

Immunofluorescence localization of fibronectin in chondrosarcoma cartilage matrix.

in Cancer Research (1982), 42(6), 2384-91

In this study, we have compared the extracellular matrix components and the in vitro adhesion characteristics of normal rat epiphysial chondrocytes with those from the Swarm rat chondrosarcoma, which has ... [more ▼]

In this study, we have compared the extracellular matrix components and the in vitro adhesion characteristics of normal rat epiphysial chondrocytes with those from the Swarm rat chondrosarcoma, which has many of the biochemical characteristics of normal cartilage. With the use of immunofluorescence techniques, tissue slices and chondrocytes in culture were tested for the presence of collagen types I and II, cartilage-characteristic proteoglycan, and fibronectin. Both normal and tumor matrix contained type II collagen and cartilage proteoglycan, but only the tumor matrix contained fibronectin. In culture, tumor-derived chondrocytes continued to accumulate fibronectin in their matrix, even after deposition of type II collagen and proteoglycans, while normal chondrocytes did not. When the attachment characteristics of both types of chondrocytes were compared, tumor chondrocytes required fibronectin for attachment, while normal chondrocytes used another attachment factor that had been identified previously as chondronectin. These studies suggest that, although biochemically similar to normal chondrocytes, tumor chondrocytes are no longer able to express the regulatory mechanisms for fibronectin accumulation. [less ▲]

Fréquence de l'infection du pigeon par le Pigeon herpèsivurs 1 et le virus de la maladie de Newcastle dans le nord de la France

in Recueil de Médecine Vétérinaire (1982), 158

Etude comparative de l'image de la psychologie chez les étudiants en pychologie, belges, espagnols, français, mexicains et québécois

in International Journal of Psychology (1982), 17

Quelques observations statistiques relatives à la subordination en latin

in Revue de l'Organisation Internationale pour l'Etude des Langues Anciennes par Ordinateur (1982), (1), 139-162

A new spore assemblage to correlate between the Breconian (British Isles) and the Gedinnian (Belgium)

in Annales de la Société Géologique de Belgique (1982), 105

Serum myoglobin determinations in the assessment of acute myocardial infarction.

in European Heart Journal (1982), 3(2), 122-129

Lack of inhibitory influence of naloxone infusion on water load excretion in female patients with subjective feeling of water retention

in Neuroendocrinology Letters (1982), 4

Acute and persistent viral infections of differentiated nerve cells

in Reviews of Infectious Diseases (1982), 4(5), 999-1014

Evolution de la motricité utérine chez la brebis au cours de l'oestrus induit.

in Annales de Médecine Vétérinaire (1982), 126

Ouverture des châsses des saints Domitien & Mengold au Trésor de Notre-Dame de Huy

in Annales du Cercle Hutois des Sciences et Beaux-Arts (1982), XXXVI

Effect of protein-supplemented fasting on metabolic and hormonal responses to epinephrine infusion in obese subjects.

in Hormone & Metabolic Research (1982), 14(5), 240-5

The present study aimed at investigating the effects of an epinephrine (EPI) intravenous infusion (10 micrograms/min for 30 min) in normal subjects and in obese patients before and after 13 days of ... [more ▼]

The present study aimed at investigating the effects of an epinephrine (EPI) intravenous infusion (10 micrograms/min for 30 min) in normal subjects and in obese patients before and after 13 days of protein-supplemented fasting (PSF, 70 g protein/day). Blood glucose, plasma free fatty acids (FFA), lactate, insulin (IRI) and glucagon were determined before, during (15, 30 min) and after (+30 and +60 min) the EPI infusion. 1. When compared to lean control subjects, obese patients exhibited a less marked rise in blood glucose and a more important increase in plasma FFA, EPI infusion decreased IRI plasma levels in normals but not in the obese. Plasma glucagon was lower in the obese under basal conditions and their A cell reactivity to EPI was clearly reduced. 2. Comparison of the results obtained in obese patients before and after PSF revealed that EPI-induced blood glucose rise was not altered despite lower basal values after PSF. Plasma lactate response was impaired, probably because of the depletion in muscle glycogen. Reduction in basal plasma IRI was associated with a significantly higher FFA mobilization. Abnormally low basal EPI-stimulated glucagon concentrations persisted after PSF despite concomitant reductions in blood glucose and plasma IRI. [less ▲]

Etude isoenzymatique de la creatine kinase chez les traumatises craniens en coma.

in Neuro-Chirurgie (1982), 28(1), 9-12

We measured the c.s.f. and serum creatine kinase activities in the first hours following the trauma, for 24 severe head injury patients. We found a good correlation between total CK and CKBB isoenzymes ... [more ▼]

We measured the c.s.f. and serum creatine kinase activities in the first hours following the trauma, for 24 severe head injury patients. We found a good correlation between total CK and CKBB isoenzymes levels in the c.s.f. only. The c.s.f. values are a quantitative index of brain dysfunction assessed by the Liege coma scale, associating the Glasgow coma scale and the study of the brain stem reflexes. There is no relationship between CK activity and intracranial pressure. [less ▲]

Délimitation, intensité et spécialisation des entités commerciales. Considérations méthodologiques

in Bulletin de la Société Géographique de Liège (1982), (18), 77-89

The aim of this article is to confront various methods that are used to delimit commercial entities, to mesure the intensity of commercial activity of the various business spaces and sub-spaces and to ... [more ▼]

The aim of this article is to confront various methods that are used to delimit commercial entities, to mesure the intensity of commercial activity of the various business spaces and sub-spaces and to translate their specialisation. By showing the limits and performances of the various index numbers and processes, it tries to propose adequate methodological tools for a more precise analysis of the commercial function. [less ▲]

Aspects physiopathologiques du métabolisme de l'oxygène

in Conv med (1982), 1(2), 125-130

The behaviour of cow blastocyst in vitro: cinematographic and morphometric analysis.

in Journal of Anatomy (1982), 134(Pt 2), 399-405

The behaviour of the cow blastocyst in vitro was studied by time-lapse cinematography and analysed by morphometry. Three types of behaviour were observed: continuous expansion followed by hatching ... [more ▼]

The behaviour of the cow blastocyst in vitro was studied by time-lapse cinematography and analysed by morphometry. Three types of behaviour were observed: continuous expansion followed by hatching; discontinuous expansion interrupted by few contractions and followed by hatching; discontinuous expansion interrupted by several rapid contractions without hatching. This demonstrated that the pulsatile activity of the blastocyst is not a necessary condition of hatching but also that only a moderate pulsatile activity is compatible with normal hatching. The time of hatching in vitro corresponded approximately with the time of zona loss in vivo (9-10 days). Rupture of the zona occurred at any point of the trophoblast layer. Hatching by herniation through a reduced opening of the zona was occasionally observed. The behavior of the embryos from a particular animal was very similar but differences were noted between embryos from different animals. [less ▲]

Asteroid rotation - Hunting for a record: 1689 Floris-Jan

in The Messenger (1982), 29

Last year, in June 1981 - ESO Messenger No. 24, p. 22-23 - H. J. Schober published areport on "Spinning Asteroids and Photometry". There he mainly gave a general introduction about what can be done using ... [more ▼]

Last year, in June 1981 - ESO Messenger No. 24, p. 22-23 - H. J. Schober published areport on "Spinning Asteroids and Photometry". There he mainly gave a general introduction about what can be done using UBV photometry in order to derive physical properties of asteroids such as geometrie forms, diameters, reflectance on the surface, bimodality of asteroids with respect to typology. A special effort was made to report about the activities to deal with asteroids as "variable objects" like variable stars - showing Iightcurves with defined rotation rates to be derived. Among asteroids it was stated that the longest rotation periods found before 1975 were not larger than 20 hours - followed by 654 Zelinda 31 ~9 (1975). 393 Lampetia 38h7, 128 Nemesis 39h0 (1979), 709 Fringilla 52h4 (1979) and 182 Eisa 80~00 (1980), the latter corresponding to 3d33. [less ▲]

Techniques of ventilatory therapy in the adult respiratory distress syndrome (ARDS)

in Acta Anaesthesiologica Belgica (1982), 33

Stimulation of retinoic acid of synthesis and turnover of basement membrane in mouse embryonal carcinoma-derived endoderm cells.

in Collagen and Related Research (1982), 2(2), 93-110

The effect of retinoic acid on the synthesis and degradation of basement membrane components by endoderm cells derived from mouse embryonal carcinoma (EC) cells was studied in a serum-free, defined medium ... [more ▼]

The effect of retinoic acid on the synthesis and degradation of basement membrane components by endoderm cells derived from mouse embryonal carcinoma (EC) cells was studied in a serum-free, defined medium. By immunofluorescence these cells accumulate type IV collagen, laminin, and fibronectin after growth in media containing epidermal growth factor (EGF), fibroblast growth factor (FGF), insulin, transferrin, and Pedersen fetuin. Collagen accounted for 2 to 4% of the newly synthesized proteins, of which 90% were found in the culture media. This collagen was identified as Pro-type IV be gel electrophoresis and enzymatic susceptibility. The EC cells preferentially attached to type IV collagen in vitro and such attachment was mediated by laminin. Treatment of EC cells with retinoic acid caused an increased accumulation of collagen (10 to 15% of secreted proteins) and also stimulated the elaboration of latent protease which degraded laminin and type IV collagen. The laminin-degrading activity was plasminogen dependent. The type IV collagen-degrading activity was a metal protease which could be activated by trypsin or plasmin. It is likely that at least part of the laminin degrading activity is plasmin (mediated through plasminogen activator), since highly purified plasmin is shown to degrade native laminin. [less ▲]

Prolactin-deficient variants of GH3 rat pituitary tumor cells: linked expression of prolactin and another hormonally responsive protein in GH3 cells

in Molecular & Cellular Biology (1982), 2(2), 179-89

GH3 cells normally synthesize and secrete two pituitary polypeptide hormones, prolactin and growth hormone. From an ethyl methane sulfonate-mutagenized population, prolactin low-producing variants have ... [more ▼]

GH3 cells normally synthesize and secrete two pituitary polypeptide hormones, prolactin and growth hormone. From an ethyl methane sulfonate-mutagenized population, prolactin low-producing variants have been isolated at a frequency near 20%. Intracellular prolactin synthesis in the variants was reduced 40- to 100-fold compared to wild-type cells while growth hormone synthesis varied less than 2-fold. This decrease was paralleled by a decrease in intracellular preprolactin mRNA. Although reduced, prolactin synthesis was still repressible by glucocorticoids. There was a coordinate loss of expression of p21, a thyroid and glucocorticoid hormone-regulated protein, in GH3 cells, whereas the synthesis and regulation of other hormonally responsive proteins were unimpaired in the variants. Since p21 expression was coordinately regained in a high-producing prolactin revertant cell, expression of the two proteins is tightly coupled in GH3 cells. The stability of the low-producing phenotype differed among variants. One (B2) gave rise to revertants at about 20% frequency even after two rounds of subcloning, whereas another (B3) was more stable in that only 1 weak revertant was found in 47 subclones. The reversion frequency of B3 cells was also measured at less than 0.5%. Unmutagenized GH3 cells were phenotypically stable in that no prolactin-deficient variant was found among 57 subclones. Since variants were ony found after ethyl methane sulfonate mutagenesis, the DNA alkylating agent appears to have promoted an epigenetic change in pituitary gene expression. [less ▲]

Contribution à l'étude des propriétés insecticides et chimiques d'Eucalyptus saligna du Zaïre

in Plantes Médicinales et Phytothérapie (1982), 16(1), 34-38

The oil of Eucalyptus saligna ( collected on the campus of the University at Kinshasa ( Zaire or Democratic Republic of Congo) has insecticidal properties (against flies, lice, mosquitoes, bed-bugs, black ... [more ▼]

The oil of Eucalyptus saligna ( collected on the campus of the University at Kinshasa ( Zaire or Democratic Republic of Congo) has insecticidal properties (against flies, lice, mosquitoes, bed-bugs, black-beetles) and contains mainly : 1,8-cineol, alpha-pinene,borneol, alpha-terpineol and linalol. [less ▲]