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  • 1
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    Measurement of aerobic scope during the whole embryonic development of a cephalopod (2017)
    PANGAEA
    In:  Supplement to: Tremblay, Nelly; Caamal-Monsreal, Claudia; Ortega, Karen; Díaz, Fernando; Celdrán, David; Rosas, Carlos (in review): Measurement of aerobic scope during the whole embryonic development of a cephalopod. Marine Biology
    Details
    Publication Date: 2023-02-16
    Description: In the context of global warming, the present study aimed to identify at which stages the embryos of the holobenthic species Octopus maya are the most sensitive to temperature. We used temperature as a tool to induce minimum (TIMR-min: 11°C) and maximum metabolic rates (TIMR-max: 30°C) on embryos that came from three wild females caught off Sisal harbor (21°10'N, 90°02'W; Yucatán, Mexico) in March 2016. Higher metabolic rate values were recorded at stages XV and XVI, when the three hearts start beating, compared to stage X, when organogenesis begins. The factorial metabolic scope (FMS = TIMR-max ? TIMR-min) was higher at stages XV and XVI than the more mature stages, establishing stage XVII as the most vulnerable. High temperature exposure applied only during the earliest developmental stages (until stage XV) could have adaptive advantages if spawning occurs during hot waves in tropical coastal zones where the embryos are incubated or used for aquaculture purposes by shortening the time before hatching without physiological costs.
    Keywords: Method comment; off_Sisal_Harbor; Oxygen consumption per wet mass; Stage; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 1164 data points
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    DATA PANGAEA
  • 2
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    Unknown
    Measurements of routine metabolic rates, metabolites (in blood), and cellular stress markers (in muscle) of invasive damselfish Neopomacentrus cyanomos, after acute decreasing changes of temperature; and after 45-days acclimation at colder regimes (2018)
    PANGAEA
    Details
    Publication Date: 2024-03-20
    Description: The damselfish Neopomacentrus cyanomos were collected twice under an oil-loading platform 1.5 km from the Cayo Arcas reef (20.21°N, −91.98°W), in August 2016 (n = 16) and August 2017 (n = 30). All fish sampled in August 2016 were submitted to an acute-thermal-decline protocol (−4 °C over a period of 1 h, and maintaining the temperature for 23 h), while the ones collected in August were acclimated 45 days at 18, 20, 22, and 26 °C. Finally, half of the acclimated fish were submitted to a high temperature challenge to assess the effect of cold thermal acclimation on heat tolerance scope. Data of routine metabolic rates, blood metabolites and biochemical stress indicators from each fish are provided in this data set.
    Keywords: Acetylcholinesterase activity, unit per protein mass; Carbonyl, per wet mass; Carboxylesterase activity, unit per protein mass; Catalase activity, unit per protein mass; Citrate synthase activity, unit per protein mass; Experimental treatment; Glucose; Glutathione, reduced, per wet mass; Glutathione S-transferase activity, unit per protein mass; Gulf of Mexico; Lactate; Lactate dehydrogenase activity, unit per protein mass; Lipid peroxidation; Metabolic rate of oxygen per wet mass, routine; off_Cayo_Arcas_reef; Oxidation reduction (RedOx) potential; Superoxide dismutase activity, unit per protein mass; Treatment: temperature; Wet mass
    Type: Dataset
    Format: text/tab-separated-values, 702 data points
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    DATA PANGAEA
  • 3
    Electronic Resource
    Electronic Resource
    Repeated sensory contact with aggressive mice rapidly leads to an anticipatory increase in core body temperature and physical activity that precedes the onset of aversive responding (2004)
    Oxford, UK : Blackwell Science Ltd
    European journal of neuroscience 20 (2004), S. 0 
    Details
    ISSN: 1460-9568
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The present study investigated whether the ‘psychological threat’ induced by sensory contact with an aggressive conspecific would be a sufficient factor in inducing behavioural and physiological disturbances. Repeated sensory contact with an aggressive mouse (social threat) in a partitioned cage was compared with repeated exposure to a novel partitioned cage in male NMRI mice. We first examined parameters of stress responsiveness (body weight, plasma corticosterone levels, frequency of self-grooming and defecation). The temperature and physical activity responses to stress were also recorded during and after the 4 weeks of stress using radiotelemetry. Finally, cognitivo-emotional performance was assessed after acute stress and 2 and 4 weeks of stress by measuring decision making, sequential alternation performance and behaviour in the elevated T-maze. Social threat had a greater impact than novel cage exposure on most parameters of stress responsiveness, although mice did not habituate to either stressor. Social threat rapidly led to an anticipatory rise in core body temperature and physical activity before the scheduled stress sessions. Such anticipation developed within the first week and persisted for 9 days after ending the stress procedure. Some memory impairment in the sequential alternation test was found in stressed mice, independent of the stressor. After 4 weeks of stress, inhibitory avoidance in the elevated T-maze was enhanced in socially stressed mice and reduced in novel cage mice. The sustained anticipation of stress in the social threat group preceded aversive responding. It remains to be established whether anticipation contributes to the development of aversive responses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1460-9568.2004.03549.x
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    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    ANTIPLATELET EFFECT OF DIMETHYL SULFOXIDE, BARBITURATES, AND METHYL PREDNISOLONE (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 411 (1983), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1983.tb47304.x
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Vinyltrimethylsilane-co-N-vinyl-2-pyrrolidone and vinyltrimethoxysilane-co-N-vinyl-2-pyrrolidone copolymers Synthesis and reactivity ratios (1998)
    Springer
    Polymer bulletin 40 (1998), S. 707-713 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary Copolymers containing vinyltrimethylsilane and vinyltrimethoxysilane with N-vinyl-2-pyrrolidone at different compositions were synthesized and characterized. The reactivity ratios was estimated by using the classical Fineman-Ross and Kelen Tüdos linear fitting procedures. These parameters were also estimated through a computer program based on nonlinear minimization algorithm, starting from the r1 and r2 values obtained by the former procedures. The analysis of the results allow us to interpret the reactivity behaviour of these polymers in terms of the relative reactivity of the substiuents. The effect of the chemical structure of the polymer side group is discussed in terms of the different contributions to the stabilization of the radical intermediates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002890050312
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    p,p′-DDT is an estrogenic compound (1988)
    Springer
    Bulletin of environmental contamination and toxicology 41 (1988), S. 496-501 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02020992
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Hepatic dysfunction due to parvovirus B19 infection (2000)
    Springer
    Journal of infection and chemotherapy 6 (2000), S. 63-64 
    Details
    ISSN: 1437-7780
    Keywords: Key words Parvovirus B19 ; Acute hepatitis ; Adult ; Liver function tests
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Parvovirus B19 has been associated with different diseases. However, hepatic involvement has rarely been reported in adult patients with parvovirus B19 infection. Herein, we report two adult patients with hepatic dysfunction associated with acute parvovirus B19 infection. We believe that hepatic involvement in the setting of parvovirus B19 infection is more common than suspected, and that antibodies against this agent should be routinely measured in patients with hepatic dysfunction of unclear etiology.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s101560050052
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Pericyte endothelial gap junctions in human cerebral capillaries (1984)
    Springer
    Anatomy and embryology 170 (1984), S. 155-159 
    Details
    ISSN: 1432-0568
    Keywords: Human cerebral capillaries ; Pericytes ; Endothelium ; Gap junctions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Human cerebral tissue has been ultrastructurally studied and gap junctions have been visualized between endothelial cells and pericytes that permit ion exchange. We propose that the functional interrelationship between endothelium and pericytes may play a role in the alteration of capillary diameter for the control of local cerebral blood flow.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00319000
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Cerebral cortex blood flow and vascular smooth muscle contractility in a rat model of ischemia: a correlative laser Doppler flowmetric and scanning electron microscopic study (1997)
    Springer
    Acta neuropathologica 93 (1997), S. 354-368 
    Details
    ISSN: 1432-0533
    Keywords: Key words Reperfusion ; Cerebral blood flow ; Vascular smooth muscle cell ; Pericyte ; Scanning ; electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The present study was undertaken to ascertain the role of smooth muscles and pericytes in the microcirculation during hyperperfusion and hypoperfusion following ischemia in rats. Paired external carotids, the pterygopalatine branch of the internal carotids and the basilar artery were exposed and divided. Reversible inflatable occluders were placed around the common carotids. After 24 h, the unanesthetized rat underwent 10-min ischemia by inflating the occluders. Continuous cortical cerebral blood flow (c-CBF) was monitored by laser Doppler flowmetry. The measured c-CBF was below 20% of control (P 〈 0.001) during ischemia. A c-CBF of 227.5 ± 54.1% (P 〈 0.001) was obtained during reperfusion hyperemia. A c-CBF of 59.7 ± 8.8% (P 〈 0.001) occurred at the nadir of postischemic hypoperfusion, and this was followed by a second hyperemia. The cytoarchitecture of the vascular smooth muscles and pericytes was assessed by scanning electron microscopy. Samples were prepared using a KOH-collagenase digestion method. In control rats, arteriolar muscle cells showed smooth surfaces. Capillary pericytes were closely apposed to the endothelium. Immediately after reperfusion, transverse membrane creases were observed on the smooth muscle surfaces. During maximal hyperemia the creases disappeared. When c-CBF started to decrease the creases became visible again. Throughout the postischemic hypoperfusion the creases remained. Capillary endothelial walls became tortuous in the late phase of hypoperfusion. During the second hyperemia most arteriolar muscle cells showed smooth surfaces. Some pericytes appeared to have migrated from the vascular wall. The morphological changes of smooth muscle membranes suggest that they are related to specific perfusional disturbances during ischemia and reperfusion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004010050627
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  • 10
    Electronic Resource
    Electronic Resource
    Spontaneous dissecting aneurysm of the common iliac artery (1991)
    Springer
    Annals of vascular surgery 5 (1991), S. 549-551 
    Details
    ISSN: 1615-5947
    Keywords: Iliac artery, common ; claudication ; aneurysm ; peripheral vascular disease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A 52-year-old man sought medical advice for sudden onset of intermittent claudication of the left lower limb after 50 meters walking. Aortography documented a dissecting aneurysm limited to the left common iliac artery. After resection, a prosthetic graft was inserted. Pathology showed that the cause of the dissection was atheroma. Spontaneous dissecting aneurysm of the common iliac artery is rare. Rupture represents the principal hazard. A high index of suspicion should lead to diagnosis as soon as signs of lower limb ischemia, occasionally transient, appear.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02015282
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    Paper (German National Licenses)
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