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2. Differential remodeling of carotid artery in spontaneously hypertensive and hereditary hyper-triglyceridemic rats
- Creator:
- Cebová, M., Kristek, F. , and Kuneš, J.
- Type:
- article, model:article, and TEXT
- Subject:
- Morphology, Hypertension, Hypertriglyceridemia, Conduit Artery, Structure, and SHR
- Language:
- English
- Description:
- High blood pressure, increased level of cholesterol, diabetes, hypertriglyceridemia and obesity are risk factors accompanied metabolic syndrome. The aim of the study was to compare geometry of carotid artery (AC) of 3-week-old (3w) and 52-week-old (52w) hereditary hypertriglyceridemic rats (hHTG) and spontaneously hypertensive rats (SHR) which represent a genetic model of human essential hypertension with age-matched Wistar rats. After sacrificing the rats were perfused with a glutaraldehyde fixative under the pressure 90 mm Hg (3w) and 120 mm Hg (52w) for 10 min via cannula placed into left ventricle. Middle part of AC was excised and processed according to standard electron microscopy procedure. Geometry of AC was evaluated in light microscopy. SHR vs. Wistar rats: BP of 3w did not differ, in 52w it was increased; cardiac hypertrophy was found in both ages; wall thickness (WT) and cross sectional area (CSA) in 3w did not differ, in 52w both were increased; inner diameter (ID) in 3w and 52w was decreased; WT/ID was increased in both ages. Hereditary HTG vs. Wistar rats: BP was increased in both periods; cardiac hypertrophy was observed in 3w; WT in 3w was decreased, in 52w it was increased; CSA and ID were decreased in both ages; WT/ID was increased only in 52w. Discrepancies between development of BP, cardiac hypertrophy in SHR and hHTG rats were observed. Alterations of BP were not in harmony with alterations in geometry of carotid arteries in both SHR and hHTG rats. We suggest that BP is not the main stimuli evoked hemodynamic and structural alterations of cardiovascular system in ontogenic development of SHR and hHTG rats.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
3. Revision of Pseudoparicana (Hemiptera: Fulgoromorpha: Tropiduchidae) with description of a new species
- Creator:
- Wang, Rong-Rong, Igor Malenovský, Liang, Ai-Ping, and Bourgoin, Thierry
- Type:
- article, články, model:article, and TEXT
- Subject:
- Zoologie, zoologie, entomologie, Morphology, taxonomy, Fulgoromorpha, Tropiduchidae, Pseudoparicana, genitalia asymmetry, Australasian Region, 2, and 59
- Language:
- English
- Description:
- The planthopper genus Pseudoparicana Melichar, 1914 is revised. Three previously known species, P. curvifera (Distant, 1907), P. sanguinifrons Muir, 1931 and P. tepida Melichar, 1914 are re-described and P. analoga Wang & Malenovský sp. n. is described as new. Lectotypes are designated for P. curvifera and P. tepida. An identification key and illustrations of diagnostic characters, including male and female genitalia, are provided for all taxa and the systematic position of this genus and the asymmetry of the genitalia of the species are briefly discussed. As far as known, the distribution of Pseudoparicana is restricted to New Guinea and the Aru Islands., Rong-Rong Wang ... [et al.]., and Obsahuje seznam literatury
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
4. Studies on the morphology of immature stages of the tribe Agathidiini (Coleoptera: Leiodidae). II.. Anisotoma blanchardi
- Creator:
- Kilian, Aleksandra
- Type:
- article, model:article, and TEXT
- Subject:
- Morphology, larva, Coleoptera, Leiodidae, Anisotoma blanchardi, and Nearctic region
- Language:
- English
- Description:
- The first and third larval stages of Nearctic Anisotoma blanchardi (Horn, 1880) are described in detail and figured for the first time; measurements and chaetotaxy of head, mouthparts, thorax, abdomen, leg and urogomphi are given. Larval morphology of the blanchardi group is discussed. The blanchardi species group, proposed after a study of adult characters, is very important phylogenetically because it is a basal group in the genus and sister group to all the remaining groups. Larval characters confirm the monophyly of the group. The common larval characters of the blanchardi species group are: (i) presence of primary setae below the posterior row of terga, (ii) secondary microsculpture on the head, dense, present from the base of the head to the anterolateral arms of the epicranial suture and fronto-clypeal furrow, (iii) sclerotization around sockets of primary posterior setae of thorax of instar III, (iv) presence of clypeal furrow in the third stage, (v) presence of setae Dc1, Dd1, Dc2, Dd2a on head in instar III, (vi) urogomphomere 1 and 2 similar in length and proportion.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public