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Journals Doklady Biological Sciences : ...

Doklady Biological Sciences : Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections

https://read.qxmd.com/read/38955886/finds-of-skulls-of-juvenile-kurdalagonus-maicopicus-cetacea-cetotheriidae-in-the-upper-miocene-of-the-republic-of-adygea
#1
JOURNAL ARTICLE
K K Tarasenko
Fragments of two skulls of young cetotheriid baleen whales were described from the Fortep'yanka 2 locality (Russia, Republic of Adygea, Maikop district, Fortep'yanka River valley, Upper Miocene, Upper Sarmatian, Blinovskaya Formation). The finds were attributed to Kurdalagonus maicopicus (Spasskii, 1951) based on the morphology of the posterior (mastoid) process of the petrosal bone, the structure of the posterior edge of the temporal fossa, and the S-like shape of the supraoccipital ridges. The skull proportions and the degree of suture closure made it possible to determine the individual age of the whales within a year...
July 1, 2024: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
https://read.qxmd.com/read/38955885/combined-effect-of-basic-antiherpetic-drugs-with-a-new-inhibitor-of-the-terminase-complex-of-herpes-simplex-virus-type-1-in-vero-cell-cultures
#2
JOURNAL ARTICLE
V L Andronova, G A Galegov, O A Vozdvizhenskaya, G L Levit, V P Krasnov, V N Charushin
Abstract-Carriers of herpes simplex virus type 1 (HSV-1) account for more than 90% of the global population. Infection manifests itself in the formation of blisters and ulcers on the face or genitals and can cause blindness, encephalitis, and generalized infection. All first- and second-line modern antiherpetic drugs selectively inhibit viral DNA polymerase. The purine-benzoxazine conjugate LAS-131 ((S)-4-[6-(purin-6-yl)aminohexanoyl]-7,8-difluoro-3,4-dihydro-3-methyl-2H-[1,4]benzoxazine), which we have described earlier, uses the large subunit of the HSV-1 terminase complex as a biotarget and selectively inhibits HSV-1 reproduction in vitro...
July 1, 2024: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
https://read.qxmd.com/read/38955884/complete-mitochondrial-genome-of-clupeonella-abrau-maliatsky-1930-clupeiformes-an-endemic-freshwater-fish-from-the-lake-abrau-russia
#3
JOURNAL ARTICLE
D P Karabanov, D D Pereboev, B D Efeykin, Yu V Kodukhova, A A Kotov
The Abrau sprat (tyulka or sardelka) Clupeonella abrau (Maliatsky, 1930) is an endemic fish of the Lake Abrau (Krasnodar Krai, Russia). The full C. abrau mitochondrial genome (16 650 bp) showed a gene arrangement conserved in Clupeidae and 98.8% similarity with the mitochondrial genome of the related species Black and Caspian Sea sprat C. cultriventris from the Black Sea. The COX1 gene sequence was additionally studied in a museum specimen collected in the Lake Abrau in 1938. Variability in modern Abrau sprat COX1 gene locus was estimated at approximately 0...
July 1, 2024: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
https://read.qxmd.com/read/38955883/plants-of-different-monocot-families-differ-in-nitrogen-and-phosphorus-contents-in-leaves
#4
JOURNAL ARTICLE
A A Betekhtina, N A Reutova, D V Veselkin
The folia content of nitrogen (N) and phosphorus (P) were studied in five monocot families: Amaryllidaceae, Cyperaceae, Iridaceae, Orchidacea, and Poaceae. The species of different monocot families were found to have different amount of N and P and their ratio in the leaves. The lowest N content was in Iridaceae and the highest was in Amaryllidaceae. The lowest P content was in Cyperaceae and Poaceae while the highest was in Amaryllidaceae and Iridaceae. A minimum N/P ratio was observed in Iridaceae; a maximum N/P ratio, was in Poaceae...
July 1, 2024: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
https://read.qxmd.com/read/38955882/first-detection-of-podocytes-in-the-circulatory-system-of-enigmatic-echiurids-annelida-thalassematidae
#5
JOURNAL ARTICLE
P A Kuznetsov, A V Ereskovsky, E N Temereva
The fine structure of echiurid blood vessels in the proboscis is known in detail, but the circulatory system of the trunk is still understood mainly at the level of general anatomy. The trunk circulatory system was studied in Bonellia viridis females, and specialized podocytes were found to form the walls of the ring vessel and the anterior part of the ventral vessel. Podocytes were for the first time described in the echiurid circulatory system. Podocytes of B. viridis displayed a typical cell architecture, which is known for other bilaterians...
July 1, 2024: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
https://read.qxmd.com/read/38902557/old-world-fruit-bats-pteropodidae-chiroptera-from-the-pleistocene-of-vietnam
#6
JOURNAL ARTICLE
A V Lopatin
Isolated teeth of a lesser short-nosed fruit bat Cynopterus brachyotis (Müller, 1838), a fulvous fruit bat Rousettus leschenaultii (Desmarest, 1820), and a dawn bat Eonycteris spelaea (Dobson, 1871) are described from the Middle Pleistocene Tham Hai cave locality in northern Vietnam (Lang Son Province). These are the first fossil findings of the Old World fruit bats in Vietnam. The Middle Pleistocene association of Pteropodidae from the Tham Hai locality may largely reflect the composition of species that roosted in local caves...
June 20, 2024: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
https://read.qxmd.com/read/38902556/hair-coat-of-the-water-deer-hydropotes-inermis-cervidae-artiodactyla-a-new-species-in-the-russian-fauna
#7
JOURNAL ARTICLE
O F Chernova, E M Shchelkanov
The hair coat and hair microstructure of an adult male Hydropotes inermis from the Primorsky Krai of Russia were studied for the first time by light and scanning electron microscopy. Lack of abundant underfur, sparse hair, and a weak layering are characteristic of the species, which inhabits the temperate monsoon and tropical zones and does not need an efficient thermal protection. An alveolar and lattice medulla of the hair is similar to that of other deer, is well developed, and increases the heat-protective properties of the hair because seasonal and daily fluctuations in temperature and humidity can be significant...
June 20, 2024: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
https://read.qxmd.com/read/38861070/keeping-and-behavior-of-the-acorn-worm-saccoglossus-mereschkowskii-hemichordata-enteropneusta-in-laboratory-conditions
#8
JOURNAL ARTICLE
A I Lukinykh, O V Ezhova, D A Klochikhina, O M Katanova, V V Malakhov
A box was designed to keep the acorn worm Saccoglossus mereschkowskii in laboratory conditions for 60 days and to monitor its behavior and feeding. Locomotion and construction of burrows in the sediment were found to be due to peristaltic movements of the proboscis, which periodically changes its shape from cylindrical to mushroom-like, and vice versa. Worms built U-shaped burrows connected with burrows of neighbor worms by flank anastomoses, thus producing a branched system of passages in a sediment layer up to 8 cm deep...
June 10, 2024: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
https://read.qxmd.com/read/38861069/fauna-and-landscapes-of-the-southern-minusinsk-basin-southern-siberia-at-the-end-of-the-late-pleistocene
#9
JOURNAL ARTICLE
D G Malikov
Paleolandscapes of the first half of MIS 2 or the Last Glacial Maximum (LGM) were reconstructed based on the study of the first mammoth fauna locality found in the Abakan River valley and a comparison with other localities of the South Minusinsk Basin. Sediments of the Uytag geological section under study included silt interlayers underlain and overlain by sandstone rock slack fragments and were interpreted as weakly eroded diluvium. Studies of the Uytag locality made it possible to clarify the time and range of distribution in southern Siberia for several mammals (Ovis ammon, Equus ferus, Marmota baibacina, Sicista subtilis, Lagurus lagurus, and Microtus gregalis) and the Pleistocene bird Aquila chrysaetos...
June 10, 2024: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
https://read.qxmd.com/read/38700814/membrane-bound-ferric-hemoglobin-in-nucleated-erythrocytes-of-the-black-scorpionfish-scorpaena-porcus-linnaeus-1758
#10
JOURNAL ARTICLE
A A Soldatov, N E Shalagina, V N Rychkova, T A Kukhareva
The content of membrane-bound methemoglobin (MtHb) in nucleated erythrocytes was studied in the black scorpionfish Scorpaena porcus (Linnaeus, 1758) in vitro. Spectral characteristics were determined for a whole hemolysate, a hemolysate obtained by stroma precipitation (a clarified hemolysate), and a resuspended stroma. The MtHb proportion in the erythrocyte stroma was found to exceed 80% (6.20 ± 0.59 µM). Clarified hemolysates were nearly free of MtHb (0.5 ± 0.2 µM). Membrane-bound ferric hemoglobin did not affect the erythrocyte resistance to osmotic shock...
May 3, 2024: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
https://read.qxmd.com/read/38700813/plecotus-macrobullaris-sarmaticus-subsp-nov-vespertilionidae-chiroptera-from-the-early-pleistocene-of-crimea
#11
JOURNAL ARTICLE
A V Lopatin
The extinct mountain long-eared bat Plecotus macrobullaris sarmaticus subsp. nov. is described on the base of jaw remains from the Lower Pleistocene of the Taurida cave in central Crimea. This is the first record of the genus Plecotus in the Lower Pleistocene of Russia and the first fossil find of P. macrobullaris Kuzyakin, 1965, documenting the early stage of the evolutionary history of the species.
May 3, 2024: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
https://read.qxmd.com/read/38619736/blood-serum-amino-acid-pool-of-european-migratory-chiroptera-vespertilio-murinus-linnaeus-1758-and-pipistrellus-nathusii-keyserling-et-blasius-1839-of-the-ural-fauna
#12
JOURNAL ARTICLE
L A Kovalchuk, V A Mishchenko, L V Chernaya, V N Bolshakov
The pool of free amino acids (AAs) in the blood serum was studied in two European migratory bat species, Vespertilio murinus and Pipistrellus nathusii, of the Urals. Bats from this year's bloods were examined, and significant differences were observed in main metabolic groups of free AAs, including glycogenic (GGAAs), nonessential (NEAAs), essential (EAAs), and sulfur-containing (SCAAs) AAs (p < 0.05). Based on the percent content of the metabolic groups in the total AA pool, GGAAs (79.7%) and EAAs (49.4%) were found to predominate in P...
April 15, 2024: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
https://read.qxmd.com/read/38538826/the-effect-of-surgical-procedure-in-the-nasal-cavity-on-the-passive-avoidance-conditioning-and-the-hypothalamic-level-of-monoamines-in-rats
#13
JOURNAL ARTICLE
A G Korolev, I V Kastyro, A N Inozemtsev, A V Latanov
A rat biological model of septoplasty was used to study the effect of surgery on passive avoidance conditioning (PAC). Septoplasty was shown to increase anxiety and to reduce exploratory activity in rodents during PAC. A neurochemical analysis of the hypothalamus was carried out immediately after the end of the experiment and showed an increase in norepinephrine (NE) metabolism after septoplasty. The finding was tentatively associated with activation of the hypothalamic-pituitary-adrenal axis.
March 27, 2024: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
https://read.qxmd.com/read/38538825/cuban-macaw-ara-tricolor-in-the-upper-pleistocene-of-western-cuba
#14
JOURNAL ARTICLE
N V Zelenkov
The Cuban macaw Ara tricolor (Bechstein, 1811) is an extinct species of large parrots. Its historical distribution and ecology are poorly understood. To date, only three late Quaternary paleontological and one archeozoological (17th-18th centuries) finds of the species have been described from central Cuba. A new (fourth) fossil find of the Cuban macaw is described and is a fragmentary carpometacarpus from Upper Pleistocene layers of the El Abrón Cave in the Pinar del Río province. The find provides the first documented evidence of the species from the western part of Cuba...
March 27, 2024: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
https://read.qxmd.com/read/38538824/potato-solanum-tuberosum-l-phytoene-synthase-genes-stpsy1-stpsy2-and-stpsy3-are-involved-in-the-plant-response-to-cold-stress
#15
JOURNAL ARTICLE
A V Kulakova, A V Shchennikova, E Z Kochieva
The structure and phylogeny of the Solanum tuberosum L. phytoene synthase genes StPSY1, StPSY2, and StPSY3 were characterized. Their expression was studied in potato seedlings exposed to cold stress in the dark phase of the diurnal cycle to simulate night cooling. All of the three genes were activated as the temperature decreased, and the greatest response was observed for StPSY1. StPSY3 was for the first time shown to respond to cold stress and photoperiod. A search for cis-regulatory elements was carried out in the promoter regions and 5'-UTRs of the StPSY genes, and the regulation of all three genes proved associated with the response to light...
March 27, 2024: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
https://read.qxmd.com/read/38472686/the-rre-rev-module-has-no-effect-on-the-packaging-efficiency-of-cas9-and-gag-proteins-into-nanomedic-virus-like-particles
#16
JOURNAL ARTICLE
N A Kruglova, D S Komkov, D V Mazurov, M V Shepelev
Delivery of ribonucleoprotein complexes of Cas9 nuclease and guide RNA into target cells with virus-like particles (VLP) is one of the novel methods of genome editing and is suitable for gene therapy of human diseases in the future. The efficiency of genome editing with VLPs depends on the Cas9 packaging into VLPs, the process mediated by the viral Gag protein. To improve the packaging of Cas9 into NanoMEDIC VLPs, plasmid constructs for Cas9 and Gag expression were modified by adding the HIV Rev response element (RRE), which was expected to increase the nuclear export of RRE-containing transcripts into the cytosol via the Rev accessory protein, as described for a Vpr-Cas9-based VLP system...
March 12, 2024: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
https://read.qxmd.com/read/38472685/hydrogels-based-on-recombinant-spidroin-stimulate-proliferation-and-migration-of-human-corneal-cells
#17
JOURNAL ARTICLE
O I Agapova, D S Ostrovsky, M Kh Khubetsova, T Z Kerimov, S A Borzenok, V G Bogush, L I Davydova, S E Cheperegin, A E Efimov, I I Agapov, V G Debabov
The effect of recombinant spidroin (RS) hydrogel (HG) on anterior epithelial cells and keratocytes of the human cornea was studied in vitro. Corneal injuries are highly prevalent in developing countries according to the World Health Organization. Various technologies have recently been proposed to restore the damaged surface of the cornea. Use of biodegradable silk-based materials, including recombinant analogs of the spider silk protein spidroin, is an important avenue of research in the field of wound healing and corneal regeneration...
March 12, 2024: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
https://read.qxmd.com/read/38472684/the-sensory-structures-of-the-carapace-of-male-tantulocarida-crustacea-are-not-homologous-to-the-lattice-organs-of-thecostraca
#18
JOURNAL ARTICLE
A S Savchenko, G A Kolbasov
Ultrastructural studies on the sensory apparatus of male Tantulocarida (Crustacea) have been conducted for the first time. Comparative morphological analysis with the specialized sensory structures of Thecostraca, known as lattice organs, has allowed for conclusions about possible homologies and further clarification of the phylogenetic position of Tantulocarida.
March 12, 2024: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
https://read.qxmd.com/read/38472683/nemertodermatida-endosymbionts-of-deep-sea-acorn-worms-hemichordata-torquaratoridae
#19
JOURNAL ARTICLE
O V Ezhova, A I Lukinykh, V V Malakhov
Worm-like endosymbionts were found in the hepatic region of the digestive tract of the deep-sea acorn worm Quatuoralisia malakhovi Ezhova et Lukinykh, 2022 (family Torquaratoridae) from the Bering Sea. The symbionts were assigned to the taxon Nemertodermatida on the basis of histological examination. Torquaratoridae are similar in feeding type to holothuroids, which have also been found to have Xenacoelomorpha endosymbionts.
March 12, 2024: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
https://read.qxmd.com/read/38430299/are-abnormally-large-eastern-bent-wing-bats-miniopterus-fuliginosus-the-result-of-a-feature-shift-or-the-result-of-hybridization
#20
JOURNAL ARTICLE
S V Kruskop, S S Zhukova
During a study of morphological variations in bent-wing bats (Miniopterus), we found that specimens originating from the Cao Bang province of Vietnam, identified as M. fuliginosus, were closer in size to the larger species, M. magnater. Mitochondrial gene analysis clearly places these specimens in the former species. At the same time, morphometric analysis of 21 cranial measurements definitely puts these specimens closer to M. magnater and shows their differences from M. fuliginosus samples from different parts of the species range...
March 2, 2024: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
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