subterranean termites are widely distributed ecosystem engineers and structural pests, yet describing their species distribution worldwide or regionally has been hindered by taxonomic uncertainties. Morphological plasticity confounds the use of taxonomic keys, while recent species descriptions and molecular techniques lacking taxonomic support have caused a muddle in interpreting the literature on species distributions. We employed an integrative taxonomic approach combining behavioral, morphological, and molecular techniques to identify 4371 samples to species. Five species were collected from wood-on-ground at 1570 sites covering 153,900 km in the state of Georgia, USA. Three species were collected throughout Georgia, with identified from every one of the 159 counties. was the second most frequently collected species, found in 128 counties, with third with 122. Two species had distributions confined to the northern part of the state. was collected from 73 counties, while the least collected species, was found in 16. Results show that the most recently described species (, 2012) is widely distributed and the second-most frequently encountered termite, representing 23% of all samples. The invasive species represented half of all the samples collected, while the least at less than 1%. A search of GenBank identified a number of accessions mismatched to a species designation resulting in the literature under-reporting the biodiversity of the genus. We, therefore, outline a path to standardize methods for species identification using an integrated taxonomic approach with appropriate barcodes for consistent identification across research teams worldwide. The data also illuminate new opportunities to examine questions related to the ecology, evolution, dispersal, and resource partitioning behaviors of these sympatric species across distinct geographical regions.
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http://dx.doi.org/10.3390/insects13070565 | DOI Listing |
Background: Alzheimer's disease (AD) is a progressive neurodegenerative disease characterized by the formation of amyloid-beta (Aβ) plaques and neurofibrillary tangles (NFTs) composed of tau aggregates. Research in animal models has generated hypotheses on the underlying mechanisms of the interaction between Aβ and tau pathology. In support of this interaction, results from clinical trials have shown that treatment with anti-Aβ monoclonal antibodies (mAbs) affects tau pathology.
View Article and Find Full Text PDFBackground: The key advantage of active immunization is the induction of sustained, polyclonal antibody responses that are readily boosted by occasional immunizations. Recent clinical trial outcomes for monoclonal antibodies lecanemab and donanemab, establish the relevance of targeting pathological Abeta for clearing amyloid plaques in Alzheimer's disease. ACI-24.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Washington University School of Medicine, St. Louis, MO, USA.
Background: Alzheimer's disease neuropathology involves the deposition in brain of aggregates enriched with microtubule-binding-region (MTBR) of tau adopting an abnormal conformation between residues 306-378 in the core of aggregates. Anti-tau drugs targeting around this domain have the potential to interfere with the cell-to-cell propagation of pathological tau. Bepranemab is a humanized monoclonal Ig4 antibody binding to tau residues 235-250.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
ADEL Institute of Science & Technology (AIST), ADEL, Inc., Seoul, Korea, Republic of (South).
Background: The spatiotemporal pattern of the spread of pathologically modified tau through brain regions in Alzheimer's disease (AD) can be explained by prion-like cell-to-cell seeding and propagation of misfolded tau aggregates. Hence, to develop targeted therapeutic antibodies, it is important to identify the seeding- and propagation-competent tau species. The hexapeptide VQIINK of tau is a critical region for tau aggregation, and K280 is acetylated in various tauopathies including AD.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Federal University of Technology, Akure, Ondo, Nigeria.
Background: In recent decades, epidemiological and experimental studies have looked into the role of pesticides, particularly the herbicide paraquat, in the development of Parkinson's disease. Horseradish tree (Moringa oleifera) is an ethnobotanical plant with lots of therapeutic potential, but there is a dearth of information on the bioactive properties of the seed alkaloid extracts.
Method: This study examined the modulatory effects of various concentrations of an alkaloid extract from the seeds of Horseradish Tree (Moringa oleifera) on the survival rate of flies exposed to paraquat, as well as certain biochemical and molecular markers related to Parkinson's disease in the heads of the flies.
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