1,848 results on '"mas"'
Search Results
2. Overview of research on virus-resistant breeding of melon.
- Author
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Tian, Shoubo, Diao, Qiannan, Cao, Yanyan, Yao, Dongwei, Zhang, Wenxian, Zhang, Hui, Du, Xuan, and Zhang, Yongping
- Subjects
MUSKMELON ,SUSTAINABLE agriculture ,GENETIC engineering ,VIRUS diseases ,SUSTAINABLE development - Abstract
The development of virus-resistant melon varieties not only poses challenges in balancing melon quality and resistance but also contributes to sustainable agricultural development. This research focuses on the exploration and application of various breeding techniques to enhance the virus resistance of melon varieties. Molecular markers associated with virus resistance genes have been identified and utilized in marker-assisted selection, enabling more efficient and targeted breeding. Genetic engineering approaches have also shown promise, introducing specific resistance genes into melon genomes. In addition, traditional breeding methods, such as hybridization and selection, continue to play an important role in creating virus-resistant melon lines. The combination of these approaches holds great potential for developing melon varieties with improved virus resistance, thereby increasing yield and quality, and reducing the economic losses caused by viral infections in melon production. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
3. IL-18 and IL-18BP: A Unique Dyad in Health and Disease.
- Author
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Novick, Daniela
- Abstract
Interleukin-18 (IL-18) serves a dual function in the immune system, acting as a "double-edged sword" cytokine. Depending on the microenvironment and timing, IL-18 can either drive harmful inflammation or restore immune homeostasis. Pathologies characterized by elevated IL-18, recently proposed to be termed IL-18opathies, highlight the therapeutic potential for IL-18 blockade. IL-18 Binding Protein (IL-18BP) is one of only four natural cytokine antagonists encoded by a separate gene, distinguishing it from canonical soluble receptors. IL-18BP's exceptionally high affinity and slow dissociation rate make it an effective regulator of IL-18, essential for maintaining immune balance and influencing disease outcomes, and positions IL-18BP as a promising alternative to more aggressive treatments that carry risks of severe infections and other complications. Tadekinig alfa, the drug form of IL-18BP, represents a targeted therapy that modulates the IL-18/IL-18BP axis, offering a safe adverse-effect-free option. With orphan drug designation, Phase III clinical trial completion, and seven years of compassionate use, Tadekinig alfa holds promise in treating autoimmune and inflammatory diseases, cancer, and genetically linked disorders. Levels of IL-18, free IL-18 and IL-18BP, may serve as biomarkers for disease severity and therapeutic response. Given its pivotal role in immune balance, the IL-18/IL-18BP dyad has attracted interest from over ten pharmaceutical companies and startups, which are currently developing innovative strategies to either inhibit or enhance IL-18 activity depending on the therapeutic need. The review focuses on the features of the dyad members and screens the therapeutic approaches. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
4. Molecular identification of a Pm4 allele conferring powdery mildew resistance in durum wheat DR88.
- Author
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Han, Guohao, Xing, Lixian, Gu, Tiantian, Jin, Yuli, Shi, Fengyu, Yan, Hanwen, Zhuo, Shiyu, Shi, Zhipeng, Wang, Jing, Zhou, Yilin, Liu, Wei, Zhang, Yelun, and An, Diaoguo
- Subjects
- *
CROP science , *AGRICULTURE , *LIFE sciences , *AMINO acid sequence , *EMMER wheat , *DURUM wheat , *POWDERY mildew diseases - Abstract
Background: Powdery mildew, caused by Blumeria graminis f. sp. tritici (Bgt), is one of the most destructive wheat diseases worldwide. Durum wheat (Triticum turgidum L. var. durum Desf.) is a crucial gene donor for improving common wheat. Results: In this study, we investigated a durum wheat accession, DR88, which exhibits broad and high levels of resistance to powdery mildew. Using bulked segregant RNA-Seq (BSR-Seq), we identified a dominant gene, tentatively designated PmDR88, and localized it to 743–776 Mb interval on chromosome arm 2AL according to the reference genome of durum wheat cv. Svevo. Subsequently, PmDR88 was mapped in a genetic region of 3.9 cM flanked by the markers WGRE77410 and WGRC872 at genetic distances of 1.6 and 2.3 cM, respectively; it also co-segregated with JS717×JS718, the diagnostic marker for the Pm4 locus. Genotyping of a large population comprising 5,174 F2:3 families using JS717×JS718 confirmed that PmDR88 is located at the Pm4 locus on 2AL. Sequence alignment revealed that PmDR88 shares identical amino acid sequences with Pm4d, while qRT-PCR analysis suggested distinct expression patterns for PmDR88 compared with previously reported Pm4 alleles. Two complementary DNA markers, including the dominant co-segregating marker JS717×JS718 and a newly developed closely-linked co-dominant marker WGRE77410, were confirmed to be available for efficiently transferring PmDR88 into the tested wheat backgrounds by marker-assisted selection (MAS) strategy. Conclusions: PmDR88 was mapped in the Pm4 locus. Despite sharing identical amino acid sequences with Pm4d, PmDR88 exhibits distinct expression patterns. Moreover, DR88 shows broad and high levels of resistance to powdery mildew. Two complementary DNA markers were identified for MAS breeding. The molecular identification of PmDR88 will facilitate transfer of this Pm4 allele into susceptible cultivars for resistance improvement or into resistant cultivars for resistance-enhanced pyramiding breeding. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
5. Identification of Functional Variants Between Tong Sheep and Hu Sheep by Whole-Genome Sequencing Pools of Individuals.
- Author
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Tang, Xiaoqin, Wang, Shuhui, Yi, Xiaohua, Li, Qi, and Sun, Xiuzhu
- Abstract
Tong sheep, known for their superior meat quality and disease resilience, face breeding challenges due to low prolificacy, unlike Hu sheep, which exhibit higher fertility and growth rates. This study identified over 700,000 genetic variants between these breeds through pooled whole-genome sequencing. Functional analysis reveals key differences in pathways related to fat metabolism, insulin signaling, and cell cycle regulation. Notable findings include unique microRNA variants (miR-1185-3p in Tong sheep and miR-487-5p in Hu sheep), with the miR-487-5p mutation potentially regulating KITLG, a fertility-related gene. These results suggest that non-coding RNA mutations contribute to phenotypic differences and provide a genomic foundation for molecular-assisted selection to improve Tong sheep breeding programs. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
6. Effect of Body Mass Index on Effective Dose in Multi Detector Computed Tomography Abdomen Using Automatic Exposure Control.
- Author
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S., Shailesh Nayak, Yadav, Sushil, and Pradhan, Abhimanyu
- Subjects
- *
CONE beam computed tomography , *COMPUTED tomography , *BODY mass index , *IMAGE reconstruction , *AUTOMATIC control systems - Abstract
BACKGROUND: Computed Tomography (CT) of the abdomen is one of the most frequently performed scans in adults for various abdominal pathologies. Its popularity stems from the immediate image reconstruction following acquisition. However, CT scans are known for their high radiation doses compared to other diagnostic X-ray procedures. This study aimed to analyze the effective dose in patients with varying body habitus during multidetector CT of the abdomen using automatic exposure control. METHODS: This prospective study was conducted in the Department of Radiodiagnosis and Imaging from February 2017 to March 2018. Patients aged 18 and older, regardless of gender, undergoing routine Contrast-Enhanced CT (CECT) of the abdomen were included. Participants were categorized into three groups based on Body Mass Index (BMI): normal weight, overweight, and obese. RESULTS: A total of 168 patients were enrolled, with a mean age of 49.8 ± 15.6 years, predominantly male (66.1%). Obese individuals exhibited significantly higher effective dose values (16.57 ± 2.27 mSv) compared to normal weight (9.45 ± 0.92 mSv) and overweight individuals (11.88 ± 0.77 mSv) (p < 0.01). Similarly, obese patients had significantly higher values for Computed Tomography Dose Index Volume (CTDIvol) (18.32 ± 2.54 mGy) and Dose Length Product (DLP) (1104.86 ± 151.84 mGycm) compared to normal weight (CTDIvol: 11.38 ± 1.24 mGy; DLP: 630.55 ± 61.57 mGycm) and overweight individuals (CTDIvol: 13.56 ± 1.15 mGy; DLP: 792.37 ± 51.56 mGy*cm) (p < 0.05). CONCLUSION: The effective dose received by obese patients during abdominal CT exams with Automatic Exposure Control (AEC) is nearly double that of normal-weight patients. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
7. Molecular identification of a Pm4 allele conferring powdery mildew resistance in durum wheat DR88
- Author
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Guohao Han, Lixian Xing, Tiantian Gu, Yuli Jin, Fengyu Shi, Hanwen Yan, Shiyu Zhuo, Zhipeng Shi, Jing Wang, Yilin Zhou, Wei Liu, Yelun Zhang, and Diaoguo An
- Subjects
Durum wheat ,MAS ,Pm4 ,Powdery mildew ,Botany ,QK1-989 - Abstract
Abstract Background Powdery mildew, caused by Blumeria graminis f. sp. tritici (Bgt), is one of the most destructive wheat diseases worldwide. Durum wheat (Triticum turgidum L. var. durum Desf.) is a crucial gene donor for improving common wheat. Results In this study, we investigated a durum wheat accession, DR88, which exhibits broad and high levels of resistance to powdery mildew. Using bulked segregant RNA-Seq (BSR-Seq), we identified a dominant gene, tentatively designated PmDR88, and localized it to 743–776 Mb interval on chromosome arm 2AL according to the reference genome of durum wheat cv. Svevo. Subsequently, PmDR88 was mapped in a genetic region of 3.9 cM flanked by the markers WGRE77410 and WGRC872 at genetic distances of 1.6 and 2.3 cM, respectively; it also co-segregated with JS717×JS718, the diagnostic marker for the Pm4 locus. Genotyping of a large population comprising 5,174 F2:3 families using JS717×JS718 confirmed that PmDR88 is located at the Pm4 locus on 2AL. Sequence alignment revealed that PmDR88 shares identical amino acid sequences with Pm4d, while qRT-PCR analysis suggested distinct expression patterns for PmDR88 compared with previously reported Pm4 alleles. Two complementary DNA markers, including the dominant co-segregating marker JS717×JS718 and a newly developed closely-linked co-dominant marker WGRE77410, were confirmed to be available for efficiently transferring PmDR88 into the tested wheat backgrounds by marker-assisted selection (MAS) strategy. Conclusions PmDR88 was mapped in the Pm4 locus. Despite sharing identical amino acid sequences with Pm4d, PmDR88 exhibits distinct expression patterns. Moreover, DR88 shows broad and high levels of resistance to powdery mildew. Two complementary DNA markers were identified for MAS breeding. The molecular identification of PmDR88 will facilitate transfer of this Pm4 allele into susceptible cultivars for resistance improvement or into resistant cultivars for resistance-enhanced pyramiding breeding.
- Published
- 2024
- Full Text
- View/download PDF
8. QTL analysis of native Fusarium head blight and deoxynivalenol resistance in ‘D8006W’/’Superior’, soft white winter wheat population
- Author
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Anjan Neupane, Ljiljana Tamburic-llincic, Anita Brûlé-Babel, and Curt McCartney
- Subjects
Fusarium head blight ,Wheat ,QTL ,SNP ,Breeding ,MAS ,Botany ,QK1-989 - Abstract
Abstract Background Fusarium head blight (FHB), caused by Fusarium graminearum, is a major disease of wheat in North America. FHB infection causes fusarium damaged kernels (FDKs), accumulation of deoxynivalenol (DON) in the grain, and a reduction in quality and grain yield. Inheritance of FHB resistance is complex and involves multiple genes. The objective of this research was to identify QTL associated with native FHB and DON resistance in a ‘D8006W’/’Superior’, soft white winter wheat population. Results Phenotyping was conducted in replicated FHB field disease nurseries across multiple environments and included assessments of morphological and FHB related traits. Parental lines had moderate FHB resistance, however, the population showed transgressive segregation. A 1913.2 cM linkage map for the population was developed with SNP markers from the wheat 90 K Infinium iSelect SNP array. QTL analysis detected major FHB resistance QTL on chromosomes 2D, 4B, 5A, and 7A across multiple environments, with resistance from both parents. Trait specific unique QTL were detected on chromosomes 1A (visual traits), 5D (FDK), 6B (FDK and DON), and 7D (DON). The plant height and days to anthesis QTL on chromosome 2D coincided with Ppd-D1 and were linked with FHB traits. The plant height QTL on chromosome 4B was also linked with FHB traits; however, the Rht-B1 locus did not segregate in the population. Conclusions This study identified several QTL, including on chromosome 2D linked with Ppd-D1, for FHB resistance in a native winter wheat germplasm.
- Published
- 2024
- Full Text
- View/download PDF
9. Modeling biological memory network by an autonomous and adaptive multi-agent system
- Author
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Hui Wei, Chenyue Feng, and Fushun Li
- Subjects
Memory modeling ,MAS ,Memory simulation ,Decentralized algorithm ,Computer applications to medicine. Medical informatics ,R858-859.7 ,Computer software ,QA76.75-76.765 - Abstract
Abstract At the intersection of computation and cognitive science, graph theory is utilized as a formalized description of complex relationships description of complex relationships and structures, but traditional graph models are static, lack the dynamic and autonomous behaviors of biological neural networks, rely on algorithms with a global view. This study introduces a multi-agent system (MAS) model based on the graph theory, each agent equipped with adaptive learning and decision-making capabilities, thereby facilitating decentralized dynamic information memory, modeling and simulation of the brain’s memory process. This decentralized approach transforms memory storage into the management of MAS paths, with each agent utilizing localized information for the dynamic formation and modification of these paths, different path refers to different memory instance. The model’s unique memory algorithm avoids a global view, instead relying on neighborhood-based interactions to enhance resource utilization. Emulating neuron electrophysiology, each agent’s adaptive learning behavior is represented through a microcircuit centered around a variable resistor. Using principles of Ohm’s and Kirchhoff’s laws, we validated the model’s efficacy in memorizing and retrieving data through computer simulations. This approach offers a plausible neurobiological explanation for memory realization and validates the memory trace theory at a system level.
- Published
- 2024
- Full Text
- View/download PDF
10. Pathogenicity of Aeromonas veronii from Nile Tilapia (Oreochromis niloticus) and Efficacy of Fish Oral Vaccine against Motile Aeromonad Septicemia in Tank Trials
- Author
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Anacleto M. Argayosa, Mary Nia M. Santos, Vina B. Argayosa, Rolando V. Pakingking, William Buhian, Mizpah L. Salvador, and Rosaneth E. Teh
- Subjects
Aeromonas ,MAS ,pathogenicity ,tilapia ,fish oral vaccine ,Aquaculture. Fisheries. Angling ,SH1-691 - Abstract
Motile aeromonad septicemia (MAS), caused by the Aeromonas species, has been a serious problem in fish health management, particularly in Nile tilapia (Oreochromis niloticus). This study characterized an Aeromonas species isolated from farmed tilapia fingerlings in Binangonan, Rizal, Philippines, and tested for its pathogenicity in tank trials. The isolate, designated as Aeromonas veronii DFR01 (Diseased Fish Rizal), was identified based on 16S rRNA phylogenetic analysis, 16S rRNA homology, and MALDI-TOF mass spectrometry. Its biochemical profile was generated from API and Biolog Gen III systems. A median lethal dose of A. veronii DFR01 was determined to be 107 CFU/mL in tank trials and was utilized as a whole-cell inactivated antigen for oral vaccine development. The immunized tilapia fingerlings produced elevated levels of immunoglobulin M (IgM) in the blood as determined by an enzyme-linked immunosorbent assay (ELISA). There was a significant increase in IgM levels 14 days post-vaccination. A quantitative polymerase chain reaction (qPCR) showed increasing levels of IgM gene expression after vaccination until 38 days of culture. Vaccinated fish showed 25–35% cumulative mortality after the challenge, while non-vaccinated-challenged fish showed 75% mortality. The findings of this research suggest that the fish oral vaccine may prove beneficial for farmed tilapia populations. The vaccine elicited improved immune responses in the fish and resulted in higher survival rates.
- Published
- 2024
- Full Text
- View/download PDF
11. Genome-Wide Association Analyses Defined the Interplay between Two Major Loci Controlling the Fruit Texture Performance in a Norwegian Apple Collection (Malus × domestica Borkh.).
- Author
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Gilpin, Liv, Costa, Fabrizio, Røen, Dag, and Alsheikh, Muath
- Subjects
LOCUS (Genetics) ,FRUIT texture ,GENOME-wide association studies ,LOCUS of control ,CHROMOSOMES - Abstract
Increasing consumption of apples (Malus domestica Borkh.) produced in Norway requires the availability of superior cultivars and extended marketability. Favorable texture and slow softening are important traits for consumer appreciation and postharvest performance. Apple texture has been well characterized using both sensory evaluation and instrumental assessments, and major quantitative trait loci (QTL) have been detected. With texture being targeted as an important trait and markers being publicly available, marker-assisted selection has already been implemented into several breeding programs. When focusing solely on a limited set of markers linked to well-investigated major QTLs, most minor-effect QTLs are normally excluded. To find novel potential SNP markers suitable to assist in selection processes, we selected a subset of accessions from a larger apple collection established in Norway based on the favorable alleles of two markers previously associated with texture, enabling the investigation of a minor part of the variance initially masked by the effect of major loci. The subset was employed to conduct a genome-wide association study aiming to search for associations with texture dynamics and retainability. QTL regions related to texture at harvest, postharvest, and for the storage index were identified on chromosomes 3, 12, and 16. Specifically, the SNPs located on chromosome 12 were shown to be potential novel markers for selection of crispness retention during storage, a valuable storability trait. These newly detected QTLs and underlying SNPs will represent a potential set of markers for the selection of the most favorable accessions characterized by superior fruit texture properties in ongoing breeding programs. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
12. Modern Plant Breeding Techniques in Crop Improvement and Genetic Diversity: From Molecular Markers and Gene Editing to Artificial Intelligence—A Critical Review.
- Author
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Sun, Lixia, Lai, Mingyu, Ghouri, Fozia, Nawaz, Muhammad Amjad, Ali, Fawad, Baloch, Faheem Shehzad, Nadeem, Muhammad Azhar, Aasim, Muhammad, and Shahid, Muhammad Qasim
- Subjects
GENETIC variation ,SCIENTIFIC method ,CHEMICAL mutagenesis ,RNA interference ,PLANT breeding - Abstract
With the development of new technologies in recent years, researchers have made significant progress in crop breeding. Modern breeding differs from traditional breeding because of great changes in technical means and breeding concepts. Whereas traditional breeding initially focused on high yields, modern breeding focuses on breeding orientations based on different crops' audiences or by-products. The process of modern breeding starts from the creation of material populations, which can be constructed by natural mutagenesis, chemical mutagenesis, physical mutagenesis transfer DNA (T-DNA), Tos17 (endogenous retrotransposon), etc. Then, gene function can be mined through QTL mapping, Bulked-segregant analysis (BSA), Genome-wide association studies (GWASs), RNA interference (RNAi), and gene editing. Then, at the transcriptional, post-transcriptional, and translational levels, the functions of genes are described in terms of post-translational aspects. This article mainly discusses the application of the above modern scientific and technological methods of breeding and the advantages and limitations of crop breeding and diversity. In particular, the development of gene editing technology has contributed to modern breeding research. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
13. Modeling biological memory network by an autonomous and adaptive multi-agent system.
- Author
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Wei, Hui, Feng, Chenyue, and Li, Fushun
- Subjects
BIOLOGICAL neural networks ,VARISTORS ,COGNITIVE science ,MULTIAGENT systems ,GRAPH theory - Abstract
At the intersection of computation and cognitive science, graph theory is utilized as a formalized description of complex relationships description of complex relationships and structures, but traditional graph models are static, lack the dynamic and autonomous behaviors of biological neural networks, rely on algorithms with a global view. This study introduces a multi-agent system (MAS) model based on the graph theory, each agent equipped with adaptive learning and decision-making capabilities, thereby facilitating decentralized dynamic information memory, modeling and simulation of the brain's memory process. This decentralized approach transforms memory storage into the management of MAS paths, with each agent utilizing localized information for the dynamic formation and modification of these paths, different path refers to different memory instance. The model's unique memory algorithm avoids a global view, instead relying on neighborhood-based interactions to enhance resource utilization. Emulating neuron electrophysiology, each agent's adaptive learning behavior is represented through a microcircuit centered around a variable resistor. Using principles of Ohm's and Kirchhoff's laws, we validated the model's efficacy in memorizing and retrieving data through computer simulations. This approach offers a plausible neurobiological explanation for memory realization and validates the memory trace theory at a system level. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
14. QTL analysis of native Fusarium head blight and deoxynivalenol resistance in 'D8006W'/'Superior', soft white winter wheat population.
- Author
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Neupane, Anjan, Tamburic-llincic, Ljiljana, Brûlé-Babel, Anita, and McCartney, Curt
- Subjects
- *
FUSARIOSIS , *CHROMOSOMES , *GRAIN yields , *SINGLE nucleotide polymorphisms , *WHEAT , *WINTER wheat - Abstract
Background: Fusarium head blight (FHB), caused by Fusarium graminearum, is a major disease of wheat in North America. FHB infection causes fusarium damaged kernels (FDKs), accumulation of deoxynivalenol (DON) in the grain, and a reduction in quality and grain yield. Inheritance of FHB resistance is complex and involves multiple genes. The objective of this research was to identify QTL associated with native FHB and DON resistance in a 'D8006W'/'Superior', soft white winter wheat population. Results: Phenotyping was conducted in replicated FHB field disease nurseries across multiple environments and included assessments of morphological and FHB related traits. Parental lines had moderate FHB resistance, however, the population showed transgressive segregation. A 1913.2 cM linkage map for the population was developed with SNP markers from the wheat 90 K Infinium iSelect SNP array. QTL analysis detected major FHB resistance QTL on chromosomes 2D, 4B, 5A, and 7A across multiple environments, with resistance from both parents. Trait specific unique QTL were detected on chromosomes 1A (visual traits), 5D (FDK), 6B (FDK and DON), and 7D (DON). The plant height and days to anthesis QTL on chromosome 2D coincided with Ppd-D1 and were linked with FHB traits. The plant height QTL on chromosome 4B was also linked with FHB traits; however, the Rht-B1 locus did not segregate in the population. Conclusions: This study identified several QTL, including on chromosome 2D linked with Ppd-D1, for FHB resistance in a native winter wheat germplasm. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
15. Pathogenicity of Aeromonas veronii from Nile Tilapia (Oreochromis niloticus) and Efficacy of Fish Oral Vaccine against Motile Aeromonad Septicemia in Tank Trials.
- Author
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Argayosa, Anacleto M., Santos, Mary Nia M., Argayosa, Vina B., Pakingking Jr., Rolando V., Buhian, William, Salvador, Mizpah L., and Teh, Rosaneth E.
- Subjects
- *
MICROBIAL virulence , *NILE tilapia , *ORAL vaccines , *FISH meal , *AQUACULTURE , *AQUACULTURISTS , *FISH nutrition - Abstract
Motile aeromonad septicemia (MAS), caused by the Aeromonas species, has been a serious problem in fish health management, particularly in Nile tilapia (Oreochromis niloticus). This study characterized an Aeromonas species isolated from farmed tilapia fingerlings in Binangonan, Rizal, Philippines, and tested for its pathogenicity in tank trials. The isolate, designated as Aeromonas veronii DFR01 (Diseased Fish Rizal), was identified based on 16S rRNA phylogenetic analysis, 16S rRNA homology, and MALDI-TOF mass spectrometry. Its biochemical profile was generated from API and Biolog Gen III systems. A median lethal dose of A. veronii DFR01 was determined to be 107 CFU/mL in tank trials and was utilized as a whole-cell inactivated antigen for oral vaccine development. The immunized tilapia fingerlings produced elevated levels of immunoglobulin M (IgM) in the blood as determined by an enzyme-linked immunosorbent assay (ELISA). There was a significant increase in IgM levels 14 days post-vaccination. A quantitative polymerase chain reaction (qPCR) showed increasing levels of IgM gene expression after vaccination until 38 days of culture. Vaccinated fish showed 25–35% cumulative mortality after the challenge, while non-vaccinated-challenged fish showed 75% mortality. The findings of this research suggest that the fish oral vaccine may prove beneficial for farmed tilapia populations. The vaccine elicited improved immune responses in the fish and resulted in higher survival rates. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
16. Accurate marker-assisted selection for non-astringent persimmon using a CAPS marker to complement a SCAR marker.
- Author
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Onoue, Noriyuki, Matsuzaki, Ryusuke, Azuma, Akifumi, Saito, Toshihiro, Shimizu, Takeo, and Sato, Akihiko
- Subjects
- *
PROLIFERATING cell nuclear antigen , *GENETIC markers , *GENETIC polymorphisms , *DNA sequencing , *FRUIT trees - Abstract
Persimmon is classified as either pollination-constant non-astringent (PCNA) or non-PCNA on the basis of the loss of astringency in fruit. PCNA trait of persimmon has attracted much research attention owing to its economical merit, as there is no cost in removing astringency. To efficiently develop new PCNA cultivars in crossbreeding, marker-assisted selection plays a crucial role. Here, we describe a cleaved amplified polymorphic sequence (CAPS) marker that can be used to select PCNA persimmon. A sequence-characterized amplified region (SCAR) marker used to screen for PCNA offspring is unsuitable for populations recently derived from two non-PCNA parents ('Yoshidagosho' and 'Toyoichi'), resulting in the selection of non-PCNA offspring as PCNA. To detect specific polymorphisms for these non-PCNA offspring, we analyzed fragment sizes of SCAR marker products by capillary DNA sequencing. A slightly lower-molecular-weight fragment at 353 bp was specifically detected in non-PCNA offspring but not in PCNA offspring. We treated the SCAR marker products with the StuI restriction enzyme and demonstrated that the smaller 353-bp fragment corresponded to allele a353-1, one of four previously identified sequence polymorphisms at the 353-bp peak, and a353-1 is linked to non-PCNA trait. Comprehensive analysis of 130 germplasms by the CAPS marker, detecting the truncated fragment after StuI treatment, indicated the presence of a353-1 in 38 non-PCNA cultivars. Our findings suggest the potential use of the CAPS marker for selecting PCNA offspring derived from these 38 non-PCNA cultivars. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
17. Eighty‐six cases of clinical characteristics and outcomes of systemic lupus erythematosus‐associated macrophage activation syndrome: A meta‐analysis study.
- Author
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Wang, Jingya, Rong, Wei, and Yan, Haotian
- Subjects
- *
MACROPHAGE activation syndrome , *MULTIPLE regression analysis , *RECEIVER operating characteristic curves , *LUPUS erythematosus , *PLATELET count - Abstract
Objective: To improve our understanding of systemic lupus erythematosus (SLE)‐macrophage activation syndrome (MAS). Methods: A systematic review was performed, to retrieve all those papers on patients with SLE‐MAS, in individual or aggregated form. The data in each of these medical records were extracted and analyzed to identify the characteristics of SLE‐MAS. Results: A total of 86 SLE‐MAS patients were included (25 males and 61 females. The mean (±standard error of the mean) age was 31.21 ± 1.694 years. MAS occurred as the initial presentation of SLE in 47 people (54.65%) and during the course of SLE in 39 (45.35%). A coinfection was reported in 23 (26.74%) patients. The mean Lupus Erythematosus Disease Activity Index 2000 (SLEDAI‐2K) score was 16.54 ± 0.9462. Overall, 10 patients (11.63%) died. The SLEDAI‐2K score was higher in patients with MAS as an initial manifestation of SLE than in those where MAS occurred during the course of SLE. The proportion of patients receiving steroid pulse therapy was lower in patients with coinfections. The deceased group demonstrated lower platelet and ferritin levels. Multiple regression analysis revealed that age and thrombocytopenia were independent factors associated with poor prognosis. In receiver operating characteristic analysis, a platelet count cutoff value of ≤47 × 109/L was a predictor of poor outcome. Conclusions: SLE‐MAS patients demonstrated high lupus activity, and lupus activity was especially higher in patients with MAS as an initial manifestation. Lupus activity was the predominant trigger of lupus MAS. Thrombocytopenia was an independent factor for poor prognosis. Highlights: Lupus activity was especially high in patients with macrophage activation syndrome (MAS) as an initial manifestation.Lupus activity is the predominant trigger for lupus‐MAS.Thrombocytopenia is a predictor of poor prognosis in patients with systemic lupus erythematosus‐MAS. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
18. Design and Multi-Objective Optimization of an Asymmetric-Rotor Permanent-Magnet-Assisted Synchronous Reluctance Motor for Improved Torque Performance.
- Author
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Xing, Feng, Zhang, Jiajia, Zhang, Mingming, and Qin, Caiyan
- Subjects
RELUCTANCE motors ,PERMANENT magnets ,SYNCHRONOUS electric motors ,FINITE element method ,ELECTROMAGNETIC waves ,SPEED limits - Abstract
Permanent-magnet-assisted synchronous reluctance motors (PMA-SynRMs) are widely used in modern industry as a kind of electromagnetic energy conversion device with high output torque, high power density, high efficiency, and excellent speed regulation. In this paper, an asymmetric-rotor PMA-SynRM combined with a Halbach array is proposed based on the conventional PMA-SynRM without modifying the amount of permanent magnet. With the finite element no-load analysis, it is proven that the permanent magnet arrangement of this method can achieve better flux focusing effect and magnetic-axis-shift (MAS) effect. A significant increase and shift of the air-gap magnetic density has also been observed. Meanwhile, the load simulation demonstrated that the proposed model possesses higher utilization of permanent magnet torque and reluctance torque compared to the conventional model. In addition, a multi-objective optimization has been performed for the rotor structure of the proposed model, and the optimized model improved the average torque by 25.32% and reduced the torque ripple by 76.92% compared to the conventional model. Finally, the constant power speed range (CPSR) performance and anti-demagnetization performance have been analyzed for the three models. The results showed that the proposed and optimized models performed better on constant power speed range, and all three models of permanent magnets had good anti-demagnetization performance. The maximum demagnetization rate of the optimized model is reduced by 13.84% compared to the proposed model at an operating condition of 200 °C and nine times the rated current. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
19. Overview of research on virus-resistant breeding of melon
- Author
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Shoubo Tian, Qiannan Diao, Yanyan Cao, Dongwei Yao, Wenxian Zhang, Hui Zhang, Xuan Du, and Yongping Zhang
- Subjects
virus- resistance ,Cucumis melo L. ,QTL ,MAS ,sustainable agriculture ,Plant culture ,SB1-1110 - Abstract
The development of virus-resistant melon varieties not only poses challenges in balancing melon quality and resistance but also contributes to sustainable agricultural development. This research focuses on the exploration and application of various breeding techniques to enhance the virus resistance of melon varieties. Molecular markers associated with virus resistance genes have been identified and utilized in marker-assisted selection, enabling more efficient and targeted breeding. Genetic engineering approaches have also shown promise, introducing specific resistance genes into melon genomes. In addition, traditional breeding methods, such as hybridization and selection, continue to play an important role in creating virus-resistant melon lines. The combination of these approaches holds great potential for developing melon varieties with improved virus resistance, thereby increasing yield and quality, and reducing the economic losses caused by viral infections in melon production.
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- 2024
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20. Global drought tolerant maize research and development: Analysis and visualization of cutting-edge scientific technologies
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Muhammad Azrai, Abdul Haris Bahrun, Roy Efendi, Nining Nurini Andayani, Muhammad Jihad, Bahtiar, Bunyamin Zainuddin, Muslimin, and Muhammad Aqil
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Drought ,Maize ,Transgenic ,MAS ,HTPP ,Genome editing ,Agriculture (General) ,S1-972 ,Nutrition. Foods and food supply ,TX341-641 - Abstract
This study explores bibliometric analysis of advanced breeding tools for drought-tolerant maize, focusing on transgenic, marker-assisted selection (MAS), high-throughput phenotyping (HTPP), and genome editing. The research underlines the growing importance of these tools in developing drought-tolerant maize varieties to address climate change issues. The methodology involves identifying countries significant in advanced breeding research, analyzing common terms in publications, and examining networking where authors share their work. The dataset from Scopus was divided into two categories: a unified query and segmented queries, categorizing documents into four specific themes: transgenic, MAS, HTPP, and genome editing. A careful filtering process removed duplicates and irrelevant documents, ensuring dataset accuracy and relevance. Results reveal varying emphasis on different advanced breeding tools, with transgenic techniques leading at 51.30 %, followed by MAS at 19.87 %, HTPP at 19.74 %, and genome editing at 9.04 %. Co-occurrence analysis highlights distinct associations for each tool: transgenic techniques are linked to specific gene modifications, transcriptional regulation, and genetic transformation; MAS is linked to quantitative trait loci (QTL) mapping, molecular markers, and Simple Sequence Repeat (SSR); HTPP is linked to remote sensing, multi/hyperspectral, crop phenology, and phenotypic traits; and genome editing is associated with CRISPR-Cas9 and complex trait loci. Integrating cutting-edge breeding tools such as HTPP and genome editing/CRISPR-Cas9 indicates a shift toward improving breeding efficiency and accuracy. Future research aims to refine precision editing techniques and promote transparent communication for ethical deployment. Collaborative efforts among research institutions and regulatory bodies for establishing standardized protocols and addressing safety, ethical, and environmental concerns, advancing the development of drought-tolerant maize varieties, and fortifying global food security amidst climate change.
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- 2024
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21. MAS Relations with Social Movements: The Yungas Cocaleros and the 2019 Crisis
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Susan Brewer-Osorio
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MAS ,ADEPCOCA ,Yungas ,Chapare ,Morales ,2019 crisis ,Anthropology ,GN1-890 ,Latin America. Spanish America ,F1201-3799 - Abstract
The Movimiento al Socialismo (MAS) emerged from a diverse coalition of social movements centered on cocalero unions and their participatory organizational structure. Some scholars argue that the MAS became a top-down ruling party that relegated and weakened social movements. This article challenges these predominate claims about MAS relations with social organizations. Based on a case study of the Asociación Departmental de Productores de Coca (ADEPCOCA), the article develops two main claims. First, it examines the political divisions within the cocalero sector, which contradict a common view of cocaleros as united with the MAS, and which therefore presented a governance dilemma for the MAS. Second, the article considers how, in the ADEPCOCA case, rural social organizations were able to both remain autonomous under the MAS and confront government power. These findings have implications for understanding how the MAS shaped Bolivian political development leading up to the 2019 crisis; namely, that there was significant tension between the MAS’s commitments to state-building and participatory governance, and that this tension contributed to resistance from within the MAS coalition, leaving the regime vulnerable to overthrow in 2019.
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- 2024
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22. Translation, transcultural adaptation, and convergent validity of the Arabic version of the Mukbang addiction scale
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Wizra Saeed, Nisma Merdad, Rizwana Amin, Tabassum Rashid, Souheil Hallit, and Feten Fekih-Romdhane
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MAS ,Mukbang addiction ,Addictive mukbang watching ,Arabic ,Psychometric properties ,Psychiatry ,RC435-571 - Abstract
Abstract Introduction The present study evaluated the psychometric properties of the Arabic translation of the Mukbang Addiction Scale (MAS) among Arabic-speaking adults from the general population. Specifically, it aimed to assess the factorial structure through a confirmatory factor analysis, determine the composite reliability through Cronbach alpha and McDonald’s omega scores, assess gender invariance, and evaluate the convergent validity by examining its correlation to eating addiction and psychological distress. Methods A total of 370 individuals with a mean age of 21.94 ± 2.29 years participated in this study, which was conducted using an online platform. The participants were surveyed on demographic information, mukbang addiction, food addiction, and psychological distress. Translation was conducted using the forward and backward technique. Results The findings demonstrated excellent internal consistency of the Arabic MAS (McDonald’s omega coefficient = 0.93). Confirmatory factor analyses validated the one-factor structure of the scale, while establishing measurement invariance across sex at the configural, metric, and scalar levels. No sex differences were observed in the Mukbang addiction levels. Lastly, the MAS scores were significantly and positively correlated with food addiction and psychological distress, supporting their convergent validity. Conclusion The current research provides evidence supporting the reliability and validity of the Arabic version of the MAS as a self-report method for assessing addictive Mukbang watching. While further validations are needed to corroborate the present findings, this measure can be effectively utilized across different fields, including schools, mental health centers, and researchers aiming to understand this global phenomenon. Plain English Summary Mukbang refers to individuals or hosts consuming large quantities of food while interacting with their audiences through recorded video or a live stream. The Mukbang phenomenon has gained substantial popularity among young individuals over the past years, rising concerns about its potential impact on their eating habits and health, especially when overconsumed. Overconsumption of mukbang content, or Mukbang addiction, aligns with the core features of addiction, including compulsive engagement, tolerance, and withdrawal symptoms, making it comparable to other addictive behaviors. Mukbang addiction can lead to detrimental effects on mental and physical health, including neglect of balanced nutrition, disordered eating habits, obesity, feelings of guilt, shame, poor self-esteem, distorted self-images, body dissatisfaction, heightened anxiety or depression, and social isolation. Given these significant impacts, valid and reliable tools are crucial to enable an accurate assessment of Mukbang addiction. This study proposes to translate, adapt and examine the psychometric properties of the Mukbang Addiction Scale (MAS) in a sample of Arabic-speaking individuals from the general population. Findings showed that the six MAS items loaded on a single factor with strong internal consistency and good convergent validity, preliminarily indicating its potential validity and reliability for assessing addictive mukbang-watching among Arabic-speaking individuals.
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- 2024
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23. Genetic Effects of Grain Quality Enhancement in Indica Hybrid Rice: Insights for Molecular Design Breeding
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Ju Gao, Lijun Gao, Weiwei Chen, Juan Huang, Dongjin Qing, Yinghua Pan, Chonglie Ma, Hao Wu, Weiyong Zhou, Jingcheng Li, Xinghai Yang, Gaoxing Dai, and Guofu Deng
- Subjects
High-quality improvement ,Molecular basis ,Molecular breeding ,MAS ,Indica hybrid rice ,Plant culture ,SB1-1110 - Abstract
Abstract Improving rice quality remains a crucial breeding objective, second only to enhancing yield, yet progress in quality improvement lags behind yield. The high temperature and ripening conditions in Southern China often result in poor rice quality, impacting hybrid rice production and utilization. Therefore, to address this challenge, analyzing the molecular basis of high-quality traits is essential for molecular design breeding of high-quality hybrid rice varieties. In this study, we investigated the molecular basis of grain shape, amylose content, gel consistency, gelatinization temperature, and aroma, which influence rice quality. We discovered that quality related alleles gs3, GW7 TFA , gw8, chalk5, Wx b , ALK TT , and fgr can enhance rice quality when applied in breeding programs. Polymerization of gs3, GW7 TFA , gw8, and chalk5 genes improves rice appearance quality. The gs3 and GW7 TFA allele polymerization increasing the grain’s length-width ratio, adding the aggregation of gw8 allele can further reducing grain width. The chalk5 gene regulates low chalkiness, but low correlation to chalkiness was exhibited with grain widths below 2.0 mm, with minimal differences between Chalk5 and chalk5 alleles. Enhancing rice cooking and eating quality is achieved through Wx b and ALK TT gene polymerization, while introducing the fgr(E7) gene significantly improved rice aroma. Using molecular marker-assisted technology, we aggregated these genes to develop a batch of indica hybrid rice parents with improved rice quality are obtained. Cross-combining these enhanced parents can generate new, high-quality hybrid rice varieties suitable for cultivation in Southern China. Therefore, our findings contribute to a molecular breeding model for grain quality improvement in high-quality indica hybrid rice. This study, along with others, highlights the potential of molecular design breeding for enhancing complex traits, particularly rice grain quality.
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- 2024
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24. Predictive Validity of Motor Assessment Scale on Poststroke Discharge Destination.
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Conradsen, Irene, Henriksen, Marius, Rytter, Hana Malá, and Varalta, Valentina
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MOTOR ability , *RESEARCH funding , *RECEIVER operating characteristic curves , *RESEARCH methodology evaluation , *LOGISTIC regression analysis , *DISCHARGE planning , *DESCRIPTIVE statistics , *LONGITUDINAL method , *ODDS ratio , *KAPLAN-Meier estimator , *RESEARCH methodology , *STROKE , *CONFIDENCE intervals , *PREDICTIVE validity , *SENSITIVITY & specificity (Statistics) , *EVALUATION - Abstract
Background: Stroke frequently leads to hospital admission and subsequent rehabilitation in order to overcome poststroke sequelae, such as motor impairments. Efficient planning of the steps following hospital admission includes early prediction of whether the patient can be discharged home or not. Early assessment of motor performance in patients with stroke‐induced motor deficits may be able to function as a predictor of discharge destination but is less explored. Objective: The primary objective was to assess the predictive validity of the Motor Assessment Scale (MAS) on discharge destination both regarding total score and regarding subscores (transfer‐mobility items and upper extremity items). Design: The study was designed as a prospective cohort study. Subjects: Thirty‐seven consecutively recruited patients with stroke are the subjects of the study. Methods: Logistic regression model was used to calculate the odds of being discharged to own home upon hospital admittance. The predictive ability was examined with a receiving operator characteristic (ROC) curve, and cut‐points from the curve were employed in Cox regression. Results: A one‐unit higher score on the total MAS significantly increased the odds of being discharged home upon hospital admittance (odds ratio (OR) 1.14, 95% CI 1.04–1.25). The same pattern was observed with the summed items of 1–5 and 6–8. The total MAS showed sensitivity of 91.7% and specificity of 68.0%. Patients having a total MAS score ≥ 24 were 17 times more likely to be discharged home (HR 17.64, 95% CI 2.23–139.57) compared to patients with a lower score. Conclusion: Motor function measured by the MAS can be applied as a predictor of discharge destination upon hospital admission after stroke in Danish setting. [ABSTRACT FROM AUTHOR]
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- 2024
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25. Translation, transcultural adaptation, and convergent validity of the Arabic version of the Mukbang addiction scale.
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Saeed, Wizra, Merdad, Nisma, Amin, Rizwana, Rashid, Tabassum, Hallit, Souheil, and Fekih-Romdhane, Feten
- Subjects
- *
ADDICTIONS , *COMPULSIVE eating , *TEST validity , *DIETARY patterns , *HEALTH behavior , *PSYCHOMETRICS , *COMPULSIVE behavior - Abstract
Introduction: The present study evaluated the psychometric properties of the Arabic translation of the Mukbang Addiction Scale (MAS) among Arabic-speaking adults from the general population. Specifically, it aimed to assess the factorial structure through a confirmatory factor analysis, determine the composite reliability through Cronbach alpha and McDonald's omega scores, assess gender invariance, and evaluate the convergent validity by examining its correlation to eating addiction and psychological distress. Methods: A total of 370 individuals with a mean age of 21.94 ± 2.29 years participated in this study, which was conducted using an online platform. The participants were surveyed on demographic information, mukbang addiction, food addiction, and psychological distress. Translation was conducted using the forward and backward technique. Results: The findings demonstrated excellent internal consistency of the Arabic MAS (McDonald's omega coefficient = 0.93). Confirmatory factor analyses validated the one-factor structure of the scale, while establishing measurement invariance across sex at the configural, metric, and scalar levels. No sex differences were observed in the Mukbang addiction levels. Lastly, the MAS scores were significantly and positively correlated with food addiction and psychological distress, supporting their convergent validity. Conclusion: The current research provides evidence supporting the reliability and validity of the Arabic version of the MAS as a self-report method for assessing addictive Mukbang watching. While further validations are needed to corroborate the present findings, this measure can be effectively utilized across different fields, including schools, mental health centers, and researchers aiming to understand this global phenomenon. Plain English Summary: Mukbang refers to individuals or hosts consuming large quantities of food while interacting with their audiences through recorded video or a live stream. The Mukbang phenomenon has gained substantial popularity among young individuals over the past years, rising concerns about its potential impact on their eating habits and health, especially when overconsumed. Overconsumption of mukbang content, or Mukbang addiction, aligns with the core features of addiction, including compulsive engagement, tolerance, and withdrawal symptoms, making it comparable to other addictive behaviors. Mukbang addiction can lead to detrimental effects on mental and physical health, including neglect of balanced nutrition, disordered eating habits, obesity, feelings of guilt, shame, poor self-esteem, distorted self-images, body dissatisfaction, heightened anxiety or depression, and social isolation. Given these significant impacts, valid and reliable tools are crucial to enable an accurate assessment of Mukbang addiction. This study proposes to translate, adapt and examine the psychometric properties of the Mukbang Addiction Scale (MAS) in a sample of Arabic-speaking individuals from the general population. Findings showed that the six MAS items loaded on a single factor with strong internal consistency and good convergent validity, preliminarily indicating its potential validity and reliability for assessing addictive mukbang-watching among Arabic-speaking individuals. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
26. Genetic Effects of Grain Quality Enhancement in Indica Hybrid Rice: Insights for Molecular Design Breeding.
- Author
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Gao, Ju, Gao, Lijun, Chen, Weiwei, Huang, Juan, Qing, Dongjin, Pan, Yinghua, Ma, Chonglie, Wu, Hao, Zhou, Weiyong, Li, Jingcheng, Yang, Xinghai, Dai, Gaoxing, and Deng, Guofu
- Subjects
- *
HYBRID rice , *RICE quality , *RICE , *NANOTECHNOLOGY , *ALLELES , *AMYLOSE - Abstract
Improving rice quality remains a crucial breeding objective, second only to enhancing yield, yet progress in quality improvement lags behind yield. The high temperature and ripening conditions in Southern China often result in poor rice quality, impacting hybrid rice production and utilization. Therefore, to address this challenge, analyzing the molecular basis of high-quality traits is essential for molecular design breeding of high-quality hybrid rice varieties. In this study, we investigated the molecular basis of grain shape, amylose content, gel consistency, gelatinization temperature, and aroma, which influence rice quality. We discovered that quality related alleles gs3, GW7TFA, gw8, chalk5, Wxb, ALKTT, and fgr can enhance rice quality when applied in breeding programs. Polymerization of gs3, GW7TFA, gw8, and chalk5 genes improves rice appearance quality. The gs3 and GW7TFA allele polymerization increasing the grain's length-width ratio, adding the aggregation of gw8 allele can further reducing grain width. The chalk5 gene regulates low chalkiness, but low correlation to chalkiness was exhibited with grain widths below 2.0 mm, with minimal differences between Chalk5 and chalk5 alleles. Enhancing rice cooking and eating quality is achieved through Wxb and ALKTT gene polymerization, while introducing the fgr(E7) gene significantly improved rice aroma. Using molecular marker-assisted technology, we aggregated these genes to develop a batch of indica hybrid rice parents with improved rice quality are obtained. Cross-combining these enhanced parents can generate new, high-quality hybrid rice varieties suitable for cultivation in Southern China. Therefore, our findings contribute to a molecular breeding model for grain quality improvement in high-quality indica hybrid rice. This study, along with others, highlights the potential of molecular design breeding for enhancing complex traits, particularly rice grain quality. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
27. Modern Breeding Strategies and Tools for Durable Late Blight Resistance in Potato.
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Berindean, Ioana Virginia, Taoutaou, Abdelmoumen, Rida, Soumeya, Ona, Andreea Daniela, Stefan, Maria Floriana, Costin, Alexandru, Racz, Ionut, and Muntean, Leon
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NUCLEIC acid hybridization ,POTATOES ,BLIGHT diseases (Botany) ,RECOMBINANT DNA ,TECHNOLOGICAL innovations ,MOLECULAR cloning ,GREAT Famine, Ireland, 1845-1852 - Abstract
Cultivated potato (Solanum tuberosum) is a major crop worldwide. It occupies the second place after cereals (corn, rice, and wheat). This important crop is threatened by the Oomycete Phytophthora infestans, the agent of late blight disease. This pathogen was first encountered during the Irish famine during the 1840s and is a reemerging threat to potatoes. It is mainly controlled chemically by using fungicides, but due to health and environmental concerns, the best alternative is resistance. When there is no disease, no treatment is required. In this study, we present a summary of the ongoing efforts concerning resistance breeding of potato against this devastating pathogen, P. infestans. This work begins with the search for and selection of resistance genes, whether they are from within or from outside the species. The genetic methods developed to date for gene mining, such as effectoromics and GWAS, provide researchers with the ability to identify genes of interest more efficiently. Once identified, these genes are cloned using molecular markers (MAS or QRL) and can then be introduced into different cultivars using somatic hybridization or recombinant DNA technology. More innovative technologies have been developed lately, such as gene editing using the CRISPR system or gene silencing, by exploiting iRNA strategies that have emerged as promising tools for managing Phytophthora infestans, which can be employed. Also, gene pyramiding or gene stacking, which involves the accumulation of two or more R genes on the same individual plant, is an innovative method that has yielded many promising results. All these advances related to the development of molecular techniques for obtaining new potato cultivars resistant to P. infestans can contribute not only to reducing losses in agriculture but especially to ensuring food security and safety. [ABSTRACT FROM AUTHOR]
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- 2024
- Full Text
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28. Investigating Nuclear DNA Microsatellites in the Nile Tilapia (Oreochromis niloticus): Insights into Association Genetics.
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Mamoon, Ahmed, Ismail, Mohamed, Awad, Simon T., and Ali, Fawzia S.
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- *
NILE tilapia , *MICROSATELLITE repeats , *NUCLEAR DNA , *GENETICS , *FISH farming , *GENETIC markers - Abstract
One of the key challenges in aquaculture is the selection of individuals with superior traits, including rapid growth rate, high flesh quality, and disease resistance. Marker-assisted selection (MAS) using molecular markers (e.g., simple sequence repeats; SSR) is known to be more effective in identifying individuals with specific traits based on their genetic makeup. The current study aimed to examine SSR markers across different linkage groups in their efficiency in characterizing the Nile tilapia fish with superior growth performance traits for usage as effective tools for MAS. A total of 152 Nile tilapia samples with identical ages but contrasting growth performances were collected from a fish farm in Kafr El-Sheik Governorate, Egypt. The collected genotypes were evaluated for growth performance metrics such as weight and length, and their microsatellite allelic patterns were also analyzed. A total of 13 microsatellite markers were assessed in the two sampled Nile tilapia categories. The t-test of growth performance traits between the two fish categories revealed highly significant differences in body weight and length. The average number of alleles per locus in the large and small populations was 2.6 and 2.2, respectively. The analyzed populations showed a significant deviation from Hardy-Weinberg equilibrium.Only seven markers showed private alleles unique to either small or large populations, indicating the suitability of these markers for association genetic studies. The studied markers showed low to moderate gene diversity (H), which ranged between 0.25 and 0.48, with an average of 0.41. The discrimination power of the studied loci was relatively high (D = 0.888). The discrepancies in growth parameters between the investigated populations were aligned with the disparities in allele frequency, indicating a possible correlation between certain allele(s) and growth performance characteristics. The present study highlighted the effectiveness of specific SSRs in addressing growth parameters during the planning for the Nile tilapia selection in breeding programs. [ABSTRACT FROM AUTHOR]
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- 2024
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29. Reviewing the essential roles of remote phenotyping, GWAS and explainable AI in practical marker-assisted selection for drought-tolerant winter wheat breeding.
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Chang-Brahim, Ignacio, Koppensteiner, Lukas J., Beltrame, Lorenzo, Bodner, Gernot, Saranti, Anna, Salzinger, Jules, Fanta-Jende, Phillipp, Sulzbachner, Christoph, Bruckmüller, Felix, Trognitz, Friederike, Samad-Zamini, Mina, Zechner, Elisabeth, Holzinger, Andreas, and Molin, Eva M.
- Subjects
WINTER wheat ,PLANT breeding ,GENOME-wide association studies ,DROUGHT tolerance ,DROUGHTS ,WHEAT breeding ,ARTIFICIAL intelligence ,TECHNOLOGICAL innovations - Abstract
Marker-assisted selection (MAS) plays a crucial role in crop breeding improving the speed and precision of conventional breeding programmes by quickly and reliably identifying and selecting plants with desired traits. However, the efficacy of MAS depends on several prerequisites, with precise phenotyping being a key aspect of any plant breeding programme. Recent advancements in highthroughput remote phenotyping, facilitated by unmanned aerial vehicles coupled to machine learning, offer a non-destructive and efficient alternative to traditional, time-consuming, and labour-intensive methods. Furthermore, MAS relies on knowledge of marker-trait associations, commonly obtained through genome-wide association studies (GWAS), to understand complex traits such as drought tolerance, including yield components and phenology. However, GWAS has limitations that artificial intelligence (AI) has been shown to partially overcome. Additionally, AI and its explainable variants, which ensure transparency and interpretability, are increasingly being used as recognised problem-solving tools throughout the breeding process. Given these rapid technological advancements, this review provides an overview of state-of-theart methods and processes underlying each MAS, from phenotyping, genotyping and association analyses to the integration of explainable AI along the entire workflow. In this context, we specifically address the challenges and importance of breeding winter wheat for greater drought tolerance with stable yields, as regional droughts during critical developmental stages pose a threat to winter wheat production. Finally, we explore the transition from scientific progress to practical implementation and discuss ways to bridge the gap between cuttingedge developments and breeders, expediting MAS-based winter wheat breeding for drought tolerance. [ABSTRACT FROM AUTHOR]
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- 2024
- Full Text
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30. Eighty‐six cases of clinical characteristics and outcomes of systemic lupus erythematosus‐associated macrophage activation syndrome: A meta‐analysis study
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Jingya Wang, Wei Rong, and Haotian Yan
- Subjects
disease characteristics ,disease prognosis ,MAS ,SLE ,Immunologic diseases. Allergy ,RC581-607 - Abstract
Abstract Objective To improve our understanding of systemic lupus erythematosus (SLE)‐macrophage activation syndrome (MAS). Methods A systematic review was performed, to retrieve all those papers on patients with SLE‐MAS, in individual or aggregated form. The data in each of these medical records were extracted and analyzed to identify the characteristics of SLE‐MAS. Results A total of 86 SLE‐MAS patients were included (25 males and 61 females. The mean (±standard error of the mean) age was 31.21 ± 1.694 years. MAS occurred as the initial presentation of SLE in 47 people (54.65%) and during the course of SLE in 39 (45.35%). A coinfection was reported in 23 (26.74%) patients. The mean Lupus Erythematosus Disease Activity Index 2000 (SLEDAI‐2K) score was 16.54 ± 0.9462. Overall, 10 patients (11.63%) died. The SLEDAI‐2K score was higher in patients with MAS as an initial manifestation of SLE than in those where MAS occurred during the course of SLE. The proportion of patients receiving steroid pulse therapy was lower in patients with coinfections. The deceased group demonstrated lower platelet and ferritin levels. Multiple regression analysis revealed that age and thrombocytopenia were independent factors associated with poor prognosis. In receiver operating characteristic analysis, a platelet count cutoff value of ≤47 × 109/L was a predictor of poor outcome. Conclusions SLE‐MAS patients demonstrated high lupus activity, and lupus activity was especially higher in patients with MAS as an initial manifestation. Lupus activity was the predominant trigger of lupus MAS. Thrombocytopenia was an independent factor for poor prognosis.
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- 2024
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31. Mas receptor activation facilitates innate hematoma resolution and neurological recovery after hemorrhagic stroke in mice
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Xiangyang Deng, Junwei Ren, Kezhu Chen, Jin Zhang, Quan Zhang, Jun Zeng, Tianwen Li, Qisheng Tang, Jian Lin, and Jianhong Zhu
- Subjects
Intracerebral hemorrhage ,Mas ,AVE0991 ,Hematoma absorption ,Neuroprotection ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Abstract Background Intracerebral hemorrhage (ICH) is a devastating neurological disease causing severe sensorimotor dysfunction and cognitive decline, yet there is no effective treatment strategy to alleviate outcomes of these patients. The Mas axis-mediated neuroprotection is involved in the pathology of various neurological diseases, however, the role of the Mas receptor in the setting of ICH remains to be elucidated. Methods C57BL/6 mice were used to establish the ICH model by injection of collagenase into mice striatum. The Mas receptor agonist AVE0991 was administered intranasally (0.9 mg/kg) after ICH. Using a combination of behavioral tests, Western blots, immunofluorescence staining, hematoma volume, brain edema, quantitative-PCR, TUNEL staining, Fluoro-Jade C staining, Nissl staining, and pharmacological methods, we examined the impact of intranasal application of AVE0991 on hematoma absorption and neurological outcomes following ICH and investigated the underlying mechanism. Results Mas receptor was found to be significantly expressed in activated microglia/macrophages, and the peak expression of Mas receptor in microglia/macrophages was observed at approximately 3–5 days, followed by a subsequent decline. Activation of Mas by AVE0991 post-treatment promoted hematoma absorption, reduced brain edema, and improved both short- and long-term neurological functions in ICH mice. Moreover, AVE0991 treatment effectively attenuated neuronal apoptosis, inhibited neutrophil infiltration, and reduced the release of inflammatory cytokines in perihematomal areas after ICH. Mechanistically, AVE0991 post-treatment significantly promoted the transformation of microglia/macrophages towards an anti-inflammatory, phagocytic, and reparative phenotype, and this functional phenotypic transition of microglia/macrophages by Mas activation was abolished by both Mas inhibitor A779 and Nrf2 inhibitor ML385. Furthermore, hematoma clearance and neuroprotective effects of AVE0991 treatment were reversed after microglia depletion in ICH. Conclusions Mas activation can promote hematoma absorption, ameliorate neurological deficits, alleviate neuron apoptosis, reduced neuroinflammation, and regulate the function and phenotype of microglia/macrophages via Akt/Nrf2 signaling pathway after ICH. Thus, intranasal application of Mas agonist ACE0991 may provide promising strategy for clinical treatment of ICH patients.
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- 2024
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32. Mas receptor activation facilitates innate hematoma resolution and neurological recovery after hemorrhagic stroke in mice
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Deng, Xiangyang, Ren, Junwei, Chen, Kezhu, Zhang, Jin, Zhang, Quan, Zeng, Jun, Li, Tianwen, Tang, Qisheng, Lin, Jian, and Zhu, Jianhong
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- 2024
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- View/download PDF
33. Myeloid‐Mas Signaling Modulates Pathogenic Crosstalk among MYC+CD63+ Endothelial Cells, MMP12+ Macrophages, and Monocytes in Acetaminophen‐Induced Liver Injury.
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Chen, Shuai, Lu, Zhi, Zhao, Yudong, Xia, Lu, Liu, Chun, Zuo, Siqing, Jin, Manchang, Jia, Haoyu, Li, Shanshan, Zhang, Shuo, Yang, Bo, Wang, Zhijing, Li, Jing, Wang, Fei, and Yang, Changqing
- Subjects
- *
ENDOTHELIAL cells , *LIVER injuries , *MYELOID cells , *MONOCYTES , *MACROPHAGES , *G protein coupled receptors , *RNA sequencing - Abstract
Acetaminophen overdose is a leading cause of acute liver failure (ALF). Despite the pivotal role of the inflammatory microenvironment in the progression of advanced acetaminophen‐induced liver injury (AILI), a comprehensive understanding of the underlying cellular interactions and molecular mechanisms remains elusive. Mas is a G protein‐coupled receptor highly expressed by myeloid cells; however, its role in the AILI microenvironment remains to be elucidated. A multidimensional approach, including single‐cell RNA sequencing, spatial transcriptomics, and hour‐long intravital imaging, is employed to characterize the microenvironment in Mas1 deficient mice at the systemic and cell‐specific levels. The characteristic landscape of mouse AILI models involves reciprocal cellular communication among MYC+CD63+ endothelial cells, MMP12+ macrophages, and monocytes, which is maintained by enhanced glycolysis and the NF‐κB/TNF‐α signaling pathway due to myeloid‐Mas deficiency. Importantly, the pathogenic microenvironment is delineated in samples obtained from patients with ALF, demonstrating its clinical relevance. In summary, these findings greatly enhance the understanding of the microenvironment in advanced AILI and offer potential avenues for patient stratification and identification of novel therapeutic targets. [ABSTRACT FROM AUTHOR]
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- 2024
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- View/download PDF
34. Are two beneficial mutations (p.Q249R and 90-bp Indel) within the ovine BMPRIB gene associated with growth traits?
- Author
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Hongwei Xu, Akhmet, Nazar, Yunyun Luo, Zhenggang Guo, Chuanying Pan, Enliang Song, Malmakov, Nurlan, Akhatayeva, Zhanerke, and Xianyong Lan
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SHEEP breeds ,SHEEP breeding ,BONFERRONI correction ,STATURE ,GENETIC polymorphisms - Abstract
Background: The problem of achieving economic effciency in sheep breeding can be largely solved by increasing sheep productivity. Recently, the BMPRIB gene has been revealed by GWAS as a potential candidate gene for sheep body morphometric traits. Therefore, the present study aimed to investigate whether genetic polymorphisms (p.Q249R SNP and 90-bp deletion) in the BMPRIB gene are associated with sheep growth traits. Methods: PCR-based genotyping was performed on 1,875 sheep, including 1,191 Guiqian semi-fine wool (GQSFW), 560 Luxi Blackhead (LXBH), 55 Lanzhou fat-tailed (LZFT), and 69 Weining (WN) sheep. Genotype-phenotype association was assessed using the independent samples t-test and ANOVA. The significance level was set at aoriginal < 0.05. The threshold p-value for significance was adjusted after correction for multiple comparisons using the Bonferroni correction. Results: After the Bonferroni correction, it was found that individuals with FecB+/FecB+ genotypes of the p.Q249R had significantly better growth traits in LXBH ewe lambs, including the body length, chest width, paunch girth, cannon circumference, and hip width (P<0.0005). Meanwhile, associations were observed between 90-bp deletion polymorphism and several growth traits (body length, body height, chest depth, and canon circumference) in GQSFW ewe adults after the Bonferroni correction (P < 0.0002), and individuals with the "DD" genotypes had greater growth traits. Conclusion: Our findings align with the experimental observations from GWAS, which identified the BMPRIB gene as a potential candidate gene for body measurement traits. These findings not only confirm the previous study's results but also expand on them. Therefore, further investigations regarding the impact of BMPRIB polymorphisms on growth traits are necessary in other sheep breeds. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
35. Identification of miRNAs that target Fcγ receptor-mediated phagocytosis during macrophage activation syndrome.
- Author
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Varsha, Kontham Kulangara, Xiaoming Yang, Cannon, Alkeiver S., Yin Zhong, Nagarkatti, Mitzi, and Nagarkatti, Prakash
- Subjects
MACROPHAGE activation syndrome ,PHAGOCYTOSIS ,PATTERN perception receptors ,GENE expression ,GENETIC overexpression - Abstract
Macrophage activation syndrome (MAS) is a life-threatening complication of systemic juvenile arthr i t is, accompanied by cytokine storm and hemophagocytosis. In addition, COVID-19-related hyperinflammation shares clinical features of MAS. Mechanisms that activate macrophages in MAS remain unclear. Here, we identify the role of miRNA in increased phagocytosis and interleukin-12 (IL-12) production by macrophages in a murine model of MAS. MAS significantly increased F4/80+ macrophages and phagocytosis in the mouse liver. Gene expression profile revealed the induction of Fcγ receptor-mediated phagocytosis (FGRP) and IL-12 production in the liver. Phagocytosis pathways such as High-affinity IgE receptor is known as Fc epsilon RI -signaling and pattern recognition receptors involved in the recognition of bacteria and viruses and phagosome formation were also significantly upregulated. In MAS, miR-136-5p and miR-501-3p targeted and caused increased expression of Fcgr3, Fcgr4, and Fcgr1 genes in FGRP pathway and consequent increase in phagocytosis by macrophages, whereas miR-129-1-3p and miR-150-3p targeted and induced Il-12. Transcriptome analysis of patients with MAS revealed the upregulation of FGRP and FCGR gene expression. A target analysis of gene expression data from a patient with MAS discovered that miR-136-5p targets FCGR2A and FCGR3A/3B, the human orthologs of mouse Fcgr3 and Fcgr4, and miR-501-3p targets FCGR1A, the human ortholog of mouse Fcgr1. Together, we demonstrate the novel role of miRNAs during MAS pathogenesis, thereby suggesting miRNA mimic-based therapy to control the hyperactivation of macrophages in patients with MAS as well as use overexpression of FCGR genes as a marker for MAS classification. [ABSTRACT FROM AUTHOR]
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- 2024
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36. Progress and prospects in harnessing wild relatives for genetic enhancement of salt tolerance in rice.
- Author
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Padmavathi, Guntupalli, Bangale, Umakanth, Rao, K. Nagendra, Balakrishnan, Divya, Arun, Melekote Nagabhushan, Singh, Rakesh Kumar, and Sundaram, Raman Meenakshi
- Subjects
ORYZA ,WILD rice ,GENETIC variation ,GERMPLASM ,RED rice ,RICE breeding ,RICE - Abstract
Salt stress is the second most devastating abiotic stress after drought and limits rice production globally. Genetic enhancement of salinity tolerance is a promising and cost-effective approach to achieve yield gains in salt-affected areas. Breeding for salinity tolerance is challenging because of the genetic complexity of the response of rice plants to salt stress, as it is governed by minor genes with low heritability and high G x E interactions. The involvement of numerous physiological and biochemical factors further complicates this complexity. The intensive selection and breeding efforts targeted towards the improvement of yield in the green-revolution era inadvertently resulted in the gradual disappearance of the loci governing salinity tolerance and a significant reduction in genetic variability among cultivars. The limited utilization of genetic resources and narrow genetic base of improved cultivars have resulted in a plateau in response to salinity tolerance in modern cultivars. Wild species are an excellent genetic resource for broadening the genetic base of domesticated rice. Exploiting novel genes of underutilized wild rice relatives to restore salinity tolerance loci eliminated during domestication can result in significant genetic gain in rice cultivars. Wild species of rice, Oryza rufipogon and Oryza nivara, have been harnessed in the development of a few improved rice varieties like Jarava and Chinsura Nona 2. Furthermore, increased access to sequence information and enhanced knowledge about the genomics of salinity tolerance in wild relatives has provided an opportunity for the deployment of wild rice accessions in breeding programs, while overcoming the cross-incompatibility and linkage drag barriers witnessed in wild hybridization. Pre-breeding is another avenue for building material that are ready for utilization in breeding programs. Efforts should be directed towards systematic collection, evaluation, characterization, and deciphering salt tolerance mechanisms in wild rice introgression lines and deploying untapped novel loci to improve salinity tolerance in rice cultivars. This review highlights the potential of wild relatives of Oryza to enhance tolerance to salinity, track the progress of work, and provide a perspective for future research. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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- View/download PDF
37. Macrophage activation syndrome: a lifetrheatening complication in a 44 year old woman
- Author
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Raffaele Natale, Annadora Morena, Clelia Nasti, Nicoletta Bertolini, Fabrizio Pasanisi, and Lidia Santarpia
- Subjects
MAS ,LES ,differential diagnosis ,Medicine - Abstract
Macrophage activation syndrome (MAS) is a potentially life-threatening complication of autoimmune diseases. A 44-yearold woman was admitted to the hospital for further evaluation due to swelling in the left latero-cervical region, a mild fever that persisted for two weeks, itchy papular skin lesions, oral ulcers, and diffuse joint pain. Her medical history reported hypertension, diffused painful joints, and a pauci-symptomatic recent SARS-CoV-2 infection. A severe, drug-resistant fever developed while the patient was in the hospital. Infectious diseases were excluded and blood cultures, swabs, and serum antibody dosages were carried out. In a patient with systemic lupus erythematosus, MAS was diagnosed due to the presence of fever, bilinear cytopenia, high ferritin, transaminase, and triglyceride levels with low fibrinogen levels. Methyl-prednisolone at immunosuppressive dosages and cyclosporine were started. Hematobiochemical parameters gradually returned to normal as the fever subsided. The patient’s condition is being monitored while the cyclosporine therapy is continued and the steroidal therapy is gradually tapered off. It was not possible to show a potential link to the SARS-CoV-2 infection.
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- 2024
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38. Part 5: Allogeneic HSCT in refractory SJIA with lung disease; recent cases from centers in North America & Europe
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Alexei A. Grom, Scott W. Canna, Rolla F. Abu-Arja, Rashmi Sinha, Luciana Peixoto, Elvira Cannizzaro, Shanmuganathan Chandrakasan, Kyla Driest, Rebecca Marsh, Bénédicte Neven, Karen Onel, Sampath Prahalad, Susan Prockop, Pierre Quartier, Johannes Roth, Grant Schulert, Juliana M.F. Silva, Donna Wall, and Ulrike Zeilhofer
- Subjects
Allogeneic HSCT ,Refractory SJIA ,SJIA-LD ,MAS ,HLA DRB1*15 alleles ,Pediatrics ,RJ1-570 ,Diseases of the musculoskeletal system ,RC925-935 - Abstract
Abstract It has been increasingly recognized that there is a subset of patients with refractory systemic JIA, who have failed all available medications and may benefit from HSCT. The increasing experience with HSCT in SJIA, suggests that despite the complicated post-HSCT course, short-term, the transplanted patients either achieved SJIA remission or reduced burden of disease. Longer follow-up, however, is needed to better define the long-term outcomes. The discussion at the NextGen 2022 conference was focused on the optimal timing for the procedure, the need for a good control of inflammatory SJIA activity prior to HSCT, and the role of the reduced intensity conditioning regimens as there was a remote concern that such regimens might increase the risk of SJIA relapse after the transplantation. There was unanimous agreement about the importance of long-term registries to address these questions.
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- 2024
- Full Text
- View/download PDF
39. The 4th NextGen therapies for SJIA and MAS: part 3 clinical trials in refractory SJIA: historic controls as an alternative to a withdrawal design study
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Fabrizio de Benedetti, Alexei A. Grom, and Hermine Brunner
- Subjects
Refractory SJIA ,Refractory SJIA trial design ,Historical controls ,MAS ,Pediatrics ,RJ1-570 ,Diseases of the musculoskeletal system ,RC925-935 - Abstract
Abstract The substantial morbidity and mortality associated with refractory systemic JIA underlies the need for new treatment approaches. However, progress in this area has been limited by the difficulty of enrolling these patients in clinical trials with traditional designs, particularly in patients presenting with the life-threatening macrophage activation syndrome. At the NextGen 2022 conference, there was group consensus that using historical cohorts as a control group to avoid the need for a placebo-arm or drug withdrawal was highly desirable and might be acceptable for clinical trials in MAS to support medication efficacy and safety. However, if historic controls were used in a trial, it would be important to ensure that the historic cohort matches the study group in terms of clinical characteristics (such as disease severity and exposure to other medications), and that disease outcome in both groups is assessed using the same outcome measures. The discussions at the NextGen 2022 conference focused on the potential strategies to achieve these goals.
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- 2024
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40. Identification of Airborne Aerobic Bacteria in the Intensive Care Room using MALDI-TOF MS
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Prajayanti Palulun, Yoeke Dewi Rasita, Muhammad Nasrum Massi, Rizalinda Sjahril, Sudirman Katu, and Ilhamjaya Pattelongi
- Subjects
aerobic bacteria ,air quality ,maldi-tof ms ,mas ,Environmental technology. Sanitary engineering ,TD1-1066 ,Environmental pollution ,TD172-193.5 - Abstract
Introduction: Indoor air quality can affect the spread of airborne microorganisms which can lead to healthcare-associated infections (HAIs). The quality and quantity of airborne microorganisms are responsible for mortality and morbidity in infection-prone hosts such as patients admitted to the intensive care unit (ICU). The research aims to determine the quality of microorganisms in the air, identify the types of aerobic bacteria, and assess the physical parameters of the air in the ICU. Methods: This study was a cross-sectional study with a descriptive observational method. Air specimens were collected using the MAS-100 NT tool with blood agar plate solid culture media, which then incubated in an aerobic atmosphere for 24 hours at 37±2°C. Observation and measurement of air microbiological quality was by counting the number of microorganisms in CFU/m3 and identification of bacteria using MALDI-TOF MS. Results and Discussion: The maximum concentration of microorganisms in the air exceeds the standard value, and the average value of the concentration of microorganisms in the air is 736 CFU/m3. The most common types of aerobic bacteria in the air were Bacillus sp. (n=12), Coagulase-negative Staphylococci (n=5), and Staphylococcus aureus (n=5). There was an increase in physical parameters in the form of average temperature (26.24°C) and humidity (70%) with a ventilation system and air regulation using mechanical ventilation sourced from a split air conditioner with an exhaust fan without a high-efficiency particulate-absorbing (HEPA) filter. Conclusion: Low indoor air quality has the potential to increase the concentration of microorganisms and bacterial findings in the air
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- 2024
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41. Investigating Nonlinear Consensus Interaction in Multi-Agent Systems: Exploring Symmetry and Asymmetry
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Rawad Abdulghafor
- Subjects
EQSC ,MAS ,consensus ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 - Abstract
This research introduces exponential quadratic stochastic consensus (EQSC), a novel approach to achieving consensus in multi-agent systems (MAS) under undirected graph topology. EQSC combines symmetric and asymmetric nonlinear interactions, leveraging quadratic random factors and matrix theories. The proposed method controls nonlinear redundancy within MAS, aiming for convergence through simplified calculations compared to linear and nonlinear consensus models. Our findings demonstrate that EQSC achieves consensus more rapidly than other models and is effective in communication scenarios where alternative models may fail. Theoretical analysis and simulations validate the effectiveness of EQSC in fostering consensus within MAS.
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- 2024
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42. The demographic profile, clinical spectrum, and outcome of term neonates requiring continuous positive airway pressure in a tertiary care teaching hospital
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Salib Hamid, Suhail Ahmad Naik, and Shafat Tak
- Subjects
bubble continuous positive airway pressure ,full term ,respiratory distress ,transient tachypnea of newborns ,mas ,Medicine - Abstract
Background: Respiratory distress is the major cause of neonatal intensive care unit (NICU) admission of full-term neonates for which they require different levels of mode of ventilation. Aims and Objectives: The objective of this study was to determine the demographic profile, clinical spectrum, and outcome of term neonates, requiring continuous positive airway pressure (CPAP) in tertiary care teaching hospitals. Materials and Methods: The study was a prospective observational study conducted from December 2020 to November 2022 in the neonatal section of the department of pediatrics. Results: A total of 261 neonates were included in the study. The male-to-female ratio was 1.7:1, the range of birth weight was between 2.1 kg and 3 kg (60.91%), the gestation age was 38 weeks (59.2%), and 73.6% were lower-segment cesarean section born. The age of starting CPAP in most of the newborns was at admission to NICU (in 69.73% of cases). The success rate of CPAP therapy was high (60.9%) and the rest 39.08% of patients did not settle with CPAP and required higher modes of respiratory support such as nasal intermittent positive pressure ventilation (IPPV) (5.89%) and IPPV (94.11%). Conclusion: In the resource-limiting settings, due to the non-availability of higher levels of ventilatory gadgets, the early use of CPAP as a mode of ventilation in full-term babies with transient tachypnea of newborns is well-documented and it can be safely used in other common neonatal conditions which can cause respiratory distress in full-term neonates. The low-middle-income countries are facing challenges to improve comprehensive neonatal care; there is a dire need for simple and cost-effective methods of respiratory support. Bubble CPAP is one such promising ventilatory support intervention, which may reduce the need for costly mechanical ventilators.
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- 2024
- Full Text
- View/download PDF
43. Scab Resistance in some Apples Genotypes from the UASVM Collection Cluj-Napoca
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Georgeta Maria BIVOLARIU (GUZU), Smaranda Doina ROȘU-MAREȘ, Claudiu MOLDOVAN, Ioan ZAGRAI, Luminița Antonela ZAGRAI, Orsolya BORSAI, Andreea ANDRECAN, and Mirela Irina CORDEA
- Subjects
apple ,scab ,symptoms ,behavior ,resistance ,mas ,Agriculture ,Agriculture (General) ,S1-972 - Abstract
Apple is one of the most consumed fruits in the world and as well one of the most important crops in temperate areas. Apple scab, caused by Venturia inaequalis is damaging diseases that affects apple species and causes up to 70% yield losses depending of cultivar’s resistance. In order to control this disease, costly chemical pesticides are necessary, which increase the pollution of environment by their toxicity. This study is focused on checking the behaviour of certain apple varieties from the pomological collection at UASVM Cluj-Napoca against apple scab infection. Nine apple cultivars ('Fuji Kiku', 'Red Cap', 'Lena', 'Katja', 'Gala Mitchgla', 'Fiesta', 'Yellow', 'Pinova' and 'Reinette du Canada'), were analysed in terms of behaviour to scab attack on leaves and fruits. Visual observations were completed by molecular analyses for the potential presence of the Vf gene in some cases. Combining results from visual observation and molecular assays, the 'Lena' and 'Pinova' cultivars were noted as resistant to scab in our field trial conditions. This indicates a good opportunity to bring them into apple breeding programs for resistance to apple scab.
- Published
- 2023
- Full Text
- View/download PDF
44. Development and application of KASP marker for high throughput detection of the seedless trait in grapevine
- Author
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Fu-qiang WANG, Lu BIAN, Peng-peng QIU, Shuo GUO, Jing-han GUO, Chen-shuo GUO, Jian-fu JIANG, Chong-huai LIU, Yong WANG, Guo-tian LIU, Yue-jin WANG, and Yan XU
- Subjects
seedless grape ,MAS ,KASP ,SSR ,Agriculture (General) ,S1-972 - Abstract
Molecular marker-assisted selection (MAS) can significantly accelerate and improve the efficiency of the breeding process in seedless grape cultivars. In this study, we developed the KASP_VviAGL11 and VviAGL11_410 markers based on a single nucleotide polymorphism (SNP) site (Chr18: 26889437 (A/C)) of the VviAGL11 gene, and compared them with previously reported SSR markers p3_VvAGL11 and 5U_VviAGL11 by testing 101 cultivars and 81 F1 hybrid progenies. The results showed that both of the proposed markers obtained 100% accuracy rates in detecting allele A, which was closely associated with the seedless trait in grapes, while p3_VvAGL11 and 5U_VviAGL11 had lower accuracy rates due to their tendency to produce false positives. After careful evaluation of the technical advantages and disadvantages associated with these markers, we concluded that KASP_VviAGL11 was superior in terms of simplicity, cost-effectiveness, efficiency, and accuracy. Thus, we optimized the process of molecular MAS for seedless grapes, focusing on the KASP_VviAGL11 marker as a central component, to provide key technical support for the development of new seedless grape cultivars.
- Published
- 2023
- Full Text
- View/download PDF
45. Modern Plant Breeding Techniques in Crop Improvement and Genetic Diversity: From Molecular Markers and Gene Editing to Artificial Intelligence—A Critical Review
- Author
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Lixia Sun, Mingyu Lai, Fozia Ghouri, Muhammad Amjad Nawaz, Fawad Ali, Faheem Shehzad Baloch, Muhammad Azhar Nadeem, Muhammad Aasim, and Muhammad Qasim Shahid
- Subjects
CRISPR/Cas9 ,DNA molecular markers ,gene regulation ,GWAS ,MAS ,QTL mapping ,Botany ,QK1-989 - Abstract
With the development of new technologies in recent years, researchers have made significant progress in crop breeding. Modern breeding differs from traditional breeding because of great changes in technical means and breeding concepts. Whereas traditional breeding initially focused on high yields, modern breeding focuses on breeding orientations based on different crops’ audiences or by-products. The process of modern breeding starts from the creation of material populations, which can be constructed by natural mutagenesis, chemical mutagenesis, physical mutagenesis transfer DNA (T-DNA), Tos17 (endogenous retrotransposon), etc. Then, gene function can be mined through QTL mapping, Bulked-segregant analysis (BSA), Genome-wide association studies (GWASs), RNA interference (RNAi), and gene editing. Then, at the transcriptional, post-transcriptional, and translational levels, the functions of genes are described in terms of post-translational aspects. This article mainly discusses the application of the above modern scientific and technological methods of breeding and the advantages and limitations of crop breeding and diversity. In particular, the development of gene editing technology has contributed to modern breeding research.
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- 2024
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- View/download PDF
46. Design and Multi-Objective Optimization of an Asymmetric-Rotor Permanent-Magnet-Assisted Synchronous Reluctance Motor for Improved Torque Performance
- Author
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Feng Xing, Jiajia Zhang, Mingming Zhang, and Caiyan Qin
- Subjects
PMA-SynRM ,torque ,asymmetric rotor ,MAS ,multi-objective optimization ,Technology ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Biology (General) ,QH301-705.5 ,Physics ,QC1-999 ,Chemistry ,QD1-999 - Abstract
Permanent-magnet-assisted synchronous reluctance motors (PMA-SynRMs) are widely used in modern industry as a kind of electromagnetic energy conversion device with high output torque, high power density, high efficiency, and excellent speed regulation. In this paper, an asymmetric-rotor PMA-SynRM combined with a Halbach array is proposed based on the conventional PMA-SynRM without modifying the amount of permanent magnet. With the finite element no-load analysis, it is proven that the permanent magnet arrangement of this method can achieve better flux focusing effect and magnetic-axis-shift (MAS) effect. A significant increase and shift of the air-gap magnetic density has also been observed. Meanwhile, the load simulation demonstrated that the proposed model possesses higher utilization of permanent magnet torque and reluctance torque compared to the conventional model. In addition, a multi-objective optimization has been performed for the rotor structure of the proposed model, and the optimized model improved the average torque by 25.32% and reduced the torque ripple by 76.92% compared to the conventional model. Finally, the constant power speed range (CPSR) performance and anti-demagnetization performance have been analyzed for the three models. The results showed that the proposed and optimized models performed better on constant power speed range, and all three models of permanent magnets had good anti-demagnetization performance. The maximum demagnetization rate of the optimized model is reduced by 13.84% compared to the proposed model at an operating condition of 200 °C and nine times the rated current.
- Published
- 2024
- Full Text
- View/download PDF
47. The road toward Cd-safe rice: From mass selection to marker-assisted selection and genetic manipulation
- Author
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Liang Sun, Yongjun Tan, and Caiyan Chen
- Subjects
Rice ,Cadmium-safe ,Cadmium-free ,Gene manipulation ,MAS ,Agriculture ,Agriculture (General) ,S1-972 - Abstract
Rice is an important dietary source of the toxic mineral cadmium (Cd) for populations in which rice is the main staple food. When grown in agricultural soils that are contaminated with Cd, rice often accumulates excessive Cd into the grains, which is a serious threat to agricultural sustainability and human health. To limit Cd accumulation in rice grains, studies on the genetic basis of Cd accumulation in rice have been carried out extensively, and some low-Cd rice varieties have also been developed in recent years. However, the challenges in low-Cd rice breeding still exist because the outcomes of the current genetic improvements for low-Cd rice cannot fully meet the requirements for the development of Cd-safe rice at present. In this review, we outline the progress in understanding the physiological mechanisms and the genetic nature of Cd accumulation in rice and summarize the strategies and outcomes of low-Cd rice breeding over the past decade. By graphing the physiological mechanism of Cd transport in the rice plant, three key steps and some underlying genes are summarized and discussed. Also, two genetic features of the natural variation in rice grain-Cd accumulation, the phenotypic plasticity and subspecies divergence, and the potential genetic explanations for these features are also discussed. Finally, we summarize and discuss current progress and the potential issues in low-Cd rice breeding using different breeding strategies. We hope to propose strategies for future success in the breeding of low-Cd rice varieties over the next decade.
- Published
- 2023
- Full Text
- View/download PDF
48. Myeloid‐Mas Signaling Modulates Pathogenic Crosstalk among MYC+CD63+ Endothelial Cells, MMP12+ Macrophages, and Monocytes in Acetaminophen‐Induced Liver Injury
- Author
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Shuai Chen, Zhi Lu, Yudong Zhao, Lu Xia, Chun Liu, Siqing Zuo, Manchang Jin, Haoyu Jia, Shanshan Li, Shuo Zhang, Bo Yang, Zhijing Wang, Jing Li, Fei Wang, and Changqing Yang
- Subjects
acetaminophen ,drug‐induced liver injury ,intravital imaging ,Mas ,microenvironment ,sterile inflammation ,Science - Abstract
Abstract Acetaminophen overdose is a leading cause of acute liver failure (ALF). Despite the pivotal role of the inflammatory microenvironment in the progression of advanced acetaminophen‐induced liver injury (AILI), a comprehensive understanding of the underlying cellular interactions and molecular mechanisms remains elusive. Mas is a G protein‐coupled receptor highly expressed by myeloid cells; however, its role in the AILI microenvironment remains to be elucidated. A multidimensional approach, including single‐cell RNA sequencing, spatial transcriptomics, and hour‐long intravital imaging, is employed to characterize the microenvironment in Mas1 deficient mice at the systemic and cell‐specific levels. The characteristic landscape of mouse AILI models involves reciprocal cellular communication among MYC+CD63+ endothelial cells, MMP12+ macrophages, and monocytes, which is maintained by enhanced glycolysis and the NF‐κB/TNF‐α signaling pathway due to myeloid‐Mas deficiency. Importantly, the pathogenic microenvironment is delineated in samples obtained from patients with ALF, demonstrating its clinical relevance. In summary, these findings greatly enhance the understanding of the microenvironment in advanced AILI and offer potential avenues for patient stratification and identification of novel therapeutic targets.
- Published
- 2024
- Full Text
- View/download PDF
49. Reviewing the essential roles of remote phenotyping, GWAS and explainable AI in practical marker-assisted selection for drought-tolerant winter wheat breeding
- Author
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Ignacio Chang-Brahim, Lukas J. Koppensteiner, Lorenzo Beltrame, Gernot Bodner, Anna Saranti, Jules Salzinger, Phillipp Fanta-Jende, Christoph Sulzbachner, Felix Bruckmüller, Friederike Trognitz, Mina Samad-Zamini, Elisabeth Zechner, Andreas Holzinger, and Eva M. Molin
- Subjects
drought tolerance ,GWAS ,MAS ,plant breeding ,winter wheat ,XAI ,Plant culture ,SB1-1110 - Abstract
Marker-assisted selection (MAS) plays a crucial role in crop breeding improving the speed and precision of conventional breeding programmes by quickly and reliably identifying and selecting plants with desired traits. However, the efficacy of MAS depends on several prerequisites, with precise phenotyping being a key aspect of any plant breeding programme. Recent advancements in high-throughput remote phenotyping, facilitated by unmanned aerial vehicles coupled to machine learning, offer a non-destructive and efficient alternative to traditional, time-consuming, and labour-intensive methods. Furthermore, MAS relies on knowledge of marker-trait associations, commonly obtained through genome-wide association studies (GWAS), to understand complex traits such as drought tolerance, including yield components and phenology. However, GWAS has limitations that artificial intelligence (AI) has been shown to partially overcome. Additionally, AI and its explainable variants, which ensure transparency and interpretability, are increasingly being used as recognised problem-solving tools throughout the breeding process. Given these rapid technological advancements, this review provides an overview of state-of-the-art methods and processes underlying each MAS, from phenotyping, genotyping and association analyses to the integration of explainable AI along the entire workflow. In this context, we specifically address the challenges and importance of breeding winter wheat for greater drought tolerance with stable yields, as regional droughts during critical developmental stages pose a threat to winter wheat production. Finally, we explore the transition from scientific progress to practical implementation and discuss ways to bridge the gap between cutting-edge developments and breeders, expediting MAS-based winter wheat breeding for drought tolerance.
- Published
- 2024
- Full Text
- View/download PDF
50. Identification of miRNAs that target Fcγ receptor-mediated phagocytosis during macrophage activation syndrome
- Author
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Kontham Kulangara Varsha, Xiaoming Yang, Alkeiver S. Cannon, Yin Zhong, Mitzi Nagarkatti, and Prakash Nagarkatti
- Subjects
cytokine ,Fcγ receptors ,MAS ,MiRNA mimics ,MiRNA inhibitors ,miRNA therapeutics ,Immunologic diseases. Allergy ,RC581-607 - Abstract
Macrophage activation syndrome (MAS) is a life-threatening complication of systemic juvenile arthritis, accompanied by cytokine storm and hemophagocytosis. In addition, COVID-19–related hyperinflammation shares clinical features of MAS. Mechanisms that activate macrophages in MAS remain unclear. Here, we identify the role of miRNA in increased phagocytosis and interleukin-12 (IL-12) production by macrophages in a murine model of MAS. MAS significantly increased F4/80+ macrophages and phagocytosis in the mouse liver. Gene expression profile revealed the induction of Fcγ receptor–mediated phagocytosis (FGRP) and IL-12 production in the liver. Phagocytosis pathways such as High-affinity IgE receptor is known as Fc epsilon RI -signaling and pattern recognition receptors involved in the recognition of bacteria and viruses and phagosome formation were also significantly upregulated. In MAS, miR-136-5p and miR-501-3p targeted and caused increased expression of Fcgr3, Fcgr4, and Fcgr1 genes in FGRP pathway and consequent increase in phagocytosis by macrophages, whereas miR-129-1-3p and miR-150-3p targeted and induced Il-12. Transcriptome analysis of patients with MAS revealed the upregulation of FGRP and FCGR gene expression. A target analysis of gene expression data from a patient with MAS discovered that miR-136-5p targets FCGR2A and FCGR3A/3B, the human orthologs of mouse Fcgr3 and Fcgr4, and miR-501-3p targets FCGR1A, the human ortholog of mouse Fcgr1. Together, we demonstrate the novel role of miRNAs during MAS pathogenesis, thereby suggesting miRNA mimic–based therapy to control the hyperactivation of macrophages in patients with MAS as well as use overexpression of FCGR genes as a marker for MAS classification.
- Published
- 2024
- Full Text
- View/download PDF
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