Inhibitory Effect of Sodium Cromoglycate on Insulin Induced Airway Hyper-Reactivity

Objective: To explore the acute effect of insulin on airway reactivity of guinea pigs and protective effects of sodium cromoglycate against insulin induced airway hyper-reactivity on isolated tracheal tissues of guinea pigs in vitro. Subjects and Methods: Effects of insulin (10-7- 10-3 M) and insulin pretreated with sodium cromoglycate (10-6 M) were observed on isolated tracheal strip of guinea pig (n=12) in vitro by constructing cumulative concentration response curves. The tracheal smooth muscle contractions were recorded with Transducer on Four Channel Oscillograph. Results: Insulin produced a concentration dependent reversible contraction of isolated tracheal muscle of guinea pig. The mean ± SEM of maximum amplitudes of contraction with insulin and insulin pretreated with sodium cromoglycate were 35 ± 1.13 mm and 14.55 ± 0.62 mm respectively. Cromoglycate shifted the concentration response curve of insulin to the right and downwards. Conclusion: Sodium cromoglycate significantly reduced the insulin mediated airway hyper-reactivity in guinea pigs. So we suggest that pretreatment of inhaled insulin with cromoglycate may have clinical implication in amelioration of its potential respiratory adverse effects such as bronchoconstriction

Fungal systematics and evolution : FUSE 6

Fungal Systematics and Evolution (FUSE) is one of the journal series to address the “fusion” between morphological data and molecular phylogenetic data and to describe new fungal taxa and interesting observations. This paper is the 6th contribution in the FUSE series—presenting one new genus, twelve new species, twelve new country records, and three new combinations. The new genus is: Pseudozeugandromyces (Laboulbeniomycetes, Laboulbeniales). The new species are: Albatrellopsis flettioides from Pakistan, Aureoboletus garciae from Mexico, Entomophila canadense from Canada, E. frigidum from Sweden, E. porphyroleucum from Vietnam, Erythrophylloporus flammans from Vietnam, Marasmiellus boreoorientalis from Kamchatka Peninsula in the Russian Far East, Marasmiellus longistipes from Pakistan, Pseudozeugandromyces tachypori on Tachyporus pusillus (Coleoptera, Staphylinidae) from Belgium, Robillarda sohagensis from Egypt, Trechispora hondurensis from Honduras, and Tricholoma kenanii from Turkey. The new records are: Arthrorhynchus eucampsipodae on Eucampsipoda africanum (Diptera, Nycteribiidae) from Rwanda and South Africa, and on Nycteribia vexata (Diptera, Nycteribiidae) from Bulgaria; A. nycteribiae on Eucampsipoda africanum from South Africa, on Penicillidia conspicua (Diptera, Nycteribiidae) from Bulgaria (the first undoubtful country record), and on Penicillidia pachymela from Tanzania; Calvatia lilacina from Pakistan; Entoloma shangdongense from Pakistan; Erysiphe quercicola on Ziziphus jujuba (Rosales, Rhamnaceae) and E. urticae on Urtica dioica (Rosales, Urticaceae) from Pakistan; Fanniomyces ceratophorus on Fannia canicularis (Diptera, Faniidae) from the Netherlands; Marasmiellus biformis and M. subnuda from Pakistan; Morchella anatolica from Turkey; Ophiocordyceps ditmarii on Vespula vulgaris (Hymenoptera, Vespidae) from Austria; and Parvacoccum pini on Pinus cembra (Pinales, Pinaceae) from Austria. The new combinations are: Appendiculina gregaria, A. scaptomyzae, and Marasmiellus rodhallii. Analysis of an LSU dataset of Arthrorhynchus including isolates of A. eucampsipodae from Eucampsipoda africanum and Nycteribia spp. hosts, revealed that this taxon is a complex of multiple species segregated by host genus. Analysis of an SSU–LSU dataset of Laboulbeniomycetes sequences revealed support for the recognition of four monophyletic genera within Stigmatomyces sensu lato: Appendiculina, Fanniomyces, Gloeandromyces, and Stigmatomyces sensu stricto. Finally, phylogenetic analyses of Rhytismataceae based on ITS–LSU ribosomal DNA resulted in a close relationship of Parvacoccum pini with Coccomyces strobi.http://www.sydowia.at/index.htmpm2021Medical Virolog

An Efficient Data-Gathering Routing Protocol for Underwater Wireless Sensor Networks

Most applications of underwater wireless sensor networks (UWSNs) demand reliable data delivery over a longer period in an efficient and timely manner. However, the harsh and unpredictable underwater environment makes routing more challenging as compared to terrestrial WSNs. Most of the existing schemes deploy mobile sensors or a mobile sink (MS) to maximize data gathering. However, the relatively high deployment cost prevents their usage in most applications. Thus, this paper presents an autonomous underwater vehicle (AUV)-aided efficient data-gathering (AEDG) routing protocol for reliable data delivery in UWSNs. To prolong the network lifetime, AEDG employs an AUV for data collection from gateways and uses a shortest path tree (SPT) algorithm while associating sensor nodes with the gateways. The AEDG protocol also limits the number of associated nodes with the gateway nodes to minimize the network energy consumption and to prevent the gateways from overloading. Moreover, gateways are rotated with the passage of time to balance the energy consumption of the network. To prevent data loss, AEDG allows dynamic data collection at the AUV depending on the limited number of member nodes that are associated with each gateway. We also develop a sub-optimal elliptical trajectory of AUV by using a connected dominating set (CDS) to further facilitate network throughput maximization. The performance of the AEDG is validated via simulations, which demonstrate the effectiveness of AEDG in comparison to two existing UWSN routing protocols in terms of the selected performance metrics

On Reliable and Efficient Data Gathering Based Routing in Underwater Wireless Sensor Networks

This paper presents cooperative routing scheme to improve data reliability. The proposed protocol achieves its objective, however, at the cost of surplus energy consumption. Thus sink mobility is introduced to minimize the energy consumption cost of nodes as it directly collects data from the network nodes at minimized communication distance. We also present delay and energy optimized versions of our proposed RE-AEDG to further enhance its performance. Simulation results prove the effectiveness of our proposed RE-AEDG in terms of the selected performance matrics

Inter- and intra-specific diversity in Agaricus endoxanthus and allied species reveals a new taxon, A. punjabensis

International audienceAgaricus endoxanthus is one of the few species of Agaricus, which are broadly distributed across several continents. This typically tropical species has also been introduced and reported from European tropical greenhouses. To better circumscribe this taxon and understand its distribution, we investigated its intraspecific variability. Sixteen collections resembling A. endoxanthus from various regions were selected for morphological examination and sequencing. Through a combined morphological and molecular approach, nine specimens were identified as A. endoxanthus. No major morphological differences were detected among the studied specimens, however their ITS sequence data were highly variable. The presence of numerous heteromorphisms and the allelic distribution at certain pairs of loci indicate that hybridization and recombination have likely occurred throughout the history of certain samples. Based on the genetic distance and phylogenetic analyses, the observed high genetic diversity appeared unlinked to the geographic origin of the samples, possibly due to intercontinental trade. The seven remaining collections resembling A. endoxanthus were identified as A. moelleri, A. punjabensis, a phylogenetically close relative of A. endoxanthus introduced from Pakistan, A. volvatulus and a closely related species. The detailed description of A. volvatulus is given with data obtained from the type specimen and three African collections

Inter- and intra-specific diversity in Agaricus endoxanthus and allied species reveals a new taxon, A. punjabensis

International audienceAgaricus endoxanthus is one of the few species of Agaricus, which are broadly distributed across several continents. This typically tropical species has also been introduced and reported from European tropical greenhouses. To better circumscribe this taxon and understand its distribution, we investigated its intraspecific variability. Sixteen collections resembling A. endoxanthus from various regions were selected for morphological examination and sequencing. Through a combined morphological and molecular approach, nine specimens were identified as A. endoxanthus. No major morphological differences were detected among the studied specimens, however their ITS sequence data were highly variable. The presence of numerous heteromorphisms and the allelic distribution at certain pairs of loci indicate that hybridization and recombination have likely occurred throughout the history of certain samples. Based on the genetic distance and phylogenetic analyses, the observed high genetic diversity appeared unlinked to the geographic origin of the samples, possibly due to intercontinental trade. The seven remaining collections resembling A. endoxanthus were identified as A. moelleri, A. punjabensis, a phylogenetically close relative of A. endoxanthus introduced from Pakistan, A. volvatulus and a closely related species. The detailed description of A. volvatulus is given with data obtained from the type specimen and three African collections

Fungal Systematics and Evolution: FUSE 6

With only 138,000 formally described fungal species (Kirk 2019) out of an estimated 2.2–3.8 million (Hawksworth & Lücking 2017) to 6 million (Taylor et al. 2014), between 97.7 and 93.7% of fungal species are left to be characterized. These may be discovered in poorly studied habitats and geographic areas (e.g., tropical rainforests), as molecular novelties, within cryptic taxa, in fungal collections (e.g., new species hidden under current names and in unidentified material), and during studies of plant and insect collections (Hawksworth & Lücking 2017, Wijayawardene et al. 2020). This large discrepancy between described and undescribed species needs to be addressed and recent work has shown that mycologists are nowhere near levelling off the curve in describing new species (Hyde et al. 2020b). Together with other series—Fungal Biodiversity Profiles (Rossi et al. 2020), Fungal Diversity Notes (Hyde et al. 2020a), Fungal Planet (Crous et al. 2020a), Mycosphere Notes (Pem et al. 2019), New and Interesting Fungi (Crous et al. 2020b)—the Fungal Systematics and Evolution series published by Sydowia contributes to a much-needed acceleration of discovery and description of fungal diversity. The present paper is the sixth contribution in the FUSE series published by Sydowia, after Crous et al. (2015), Hernández-Restrepo et al. (2016), KrisaiGreilhuber et al. (2017), Liu et al. (2018), and Song et al. (2019). Altogether, one family, six genera, 67 species, and 22 combinations have been introduced in the FUSE series.publishedVersio