Differential fitness of allelic isozymes in the marine gastropodsLittorina punctata andLittorina neritoides, exposed to the environmental stress of the combined effects of cadmium and mercury pollution

Batia Lavie; Eviatar Nevo

doi:10.1007/bf01867162

Differential fitness of allelic isozymes in the marine gastropodsLittorina punctata andLittorina neritoides, exposed to the environmental stress of the combined effects of cadmium and mercury pollution

Environmental Management ◽

10.1007/bf01867162 ◽

1987 ◽

Vol 11 (3) ◽

pp. 345-349 ◽

Cited By ~ 12

Author(s):

Batia Lavie ◽

Eviatar Nevo

Keyword(s):

Environmental Stress ◽

Mercury Pollution ◽

Combined Effects ◽

Allelic Isozymes

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Combined effects of environmental stress and virus infections on the growth of forest trees

Archives of Phytopathology and Plant Protection ◽

10.1080/03235409009438991 ◽

1990 ◽

Vol 26 (4) ◽

pp. 359-362 ◽

Cited By ~ 2

Author(s):

Hans-Günter Kontzog ◽

Helmut Kleinhempel ◽

Jürgen Matschke

Keyword(s):

Environmental Stress ◽

Combined Effects ◽

Forest Trees ◽

Virus Infections

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Differential viability of allelic isozymes in the marine gastropod Cerithium scabridum exposed to the environmental stress of nonionic detergent and crude oil-surfactant mixtures

Genetica ◽

10.1007/bf00055639 ◽

1988 ◽

Vol 78 (3) ◽

pp. 205-213 ◽

Cited By ~ 2

Author(s):

E. Nevo ◽

B. Lavie

Keyword(s):

Environmental Stress ◽

Crude Oil ◽

Surfactant Mixtures ◽

Marine Gastropod ◽

Nonionic Detergent ◽

Differential Viability ◽

Allelic Isozymes

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Conservation status of Paramuricea clavata (Risso, 1826) (Anthozoa, Alcyonacea) in the Chafarinas Islands (Mediterranean Sea)

Animal Biodiversity and Conservation ◽

10.32800/abc.2019.42.0253 ◽

2019 ◽

pp. 253-256

Author(s):

L. Sánchez–Tocino ◽

A. de la Linde Rubio ◽

M. J. López–Rodríguez ◽

J. M. Tierno de Figueroa

Keyword(s):

Environmental Stress ◽

Mediterranean Sea ◽

Conservation Status ◽

Mediterranean Area ◽

Western Mediterranean ◽

Stress Factors ◽

Combined Effects ◽

Western Mediterranean Sea ◽

Paramuricea Clavata ◽

Different Depths

The red gorgonian Paramuricea clavata (Risso, 1826) is affected by the combined effects of environmental stress factors and diseases in the Mediterranean area. Samplings at different depths in two sites of Chafarinas Islands (South–Western Mediterranean Sea) were carried out to quantify the degree of injuries on red gorgonian colonies. The results showed that shallow colonies displayed a higher rate of injuries than deep colonies. Overall, the conservation status of the population was worse than previously considered in this area.

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Effects of Retinoic Acid and 1,25-Dihydroxyvitamin D3 on IFN-gamma Secretion by Mononuclear Leukocytes from Nulliparous and Postparturient Dairy Cattle

International Journal for Vitamin and Nutrition Research ◽

10.1024/0300-9831.70.3.92 ◽

2000 ◽

Vol 70 (3) ◽

pp. 92-101 ◽

Cited By ~ 14

Author(s):

Burim Ametaj ◽

Brian Nonnecke ◽

Ronald Horst ◽

Donald Beitz

Keyword(s):

Retinoic Acid ◽

Dairy Cattle ◽

Dairy Cows ◽

Dairy Cow ◽

Pokeweed Mitogen ◽

Mononuclear Leukocytes ◽

Combined Effects ◽

Ifn Gamma ◽

Dihydroxyvitamin D ◽

1,25 Dihydroxyvitamin D

Individual and combined effects of several isomers of retinoic acid (RA) and 1,25-dihydroxyvitamin D3 (1,25-(OH)2D3) on interferon-gamma (IFN-gamma) secretion by blood mononuclear leukocytes (MNL) from nulliparous and postparturient Holstein cattle were evaluated in vitro. In the first experiment, effects on incubation period (24 to 72 hours) and time of supplementation (0 to 32 hours) with all-trans, 9-cis, 13-cis-, and 9,13-dicis-RAs (0 to 100 nM) on IFN-gamma secretion by pokeweed mitogen (PWM)-stimulated (0 and 10 mug/ml) MNL from nulliparous cattle were evaluated. In the second experiment, MNL from postparturient cows (bled at 0, 2, 4, and 16 days postpartum) were stimulated with PWM (0 and 10 mug/ml) in the presence of RA isomers (9-cis- or 9,13-dicis-RA; 0 to 100 nM), 1,25-(OH)2D3 (0 to 100 nM), or with combinations of these metabolites. The results show that individual isomers of RA had no effect on IFN-gamma secretion by PWM-stimulated MNL from nulliparous or postparturient cows. Furthermore 1,25-dihydroxyvitamin D3 inhibited IFN-gamma secretion by MNL from nulliparous and postparturient dairy cows; however, the degree of inhibition was greater when 9-cis- and 9,13-dicis-RA were also present in the cultures. Finally mononuclear leukocytes from postparturient dairy cows produced substantially less IFN-gamma than did MNL from nulliparous cattle. It is concluded that retinoic acids individually did not affect the capacity of leukocytes from dairy cattle to secrete IFN-gamma. This result is in marked contrast to studies in monogastric species indicating that RAs inhibit IFN-gamma secretion by peripheral blood T cells. Inhibition of IFN-gamma secretion by 1,25-(OH)2D3 was potentiated by 9-cis- and 9,13-di-cis-retinoics acids, suggesting that an excess of dietary vitamins A and D may compromise further the naturally immunosuppressed postparturient dairy cow. Additional research is necessary to determine if the combined effects of these metabolites on IFN-gamma secretion represent an increased susceptibility of the dairy cow to infectious diseases during the periparturient period. Lower secretion of IFN-gamma by MNL from postpartutient dairy cows, relative to nulliparous cattle, suggests that recently-calved cows are naturally immunosuppressed.

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