Social goals as predictors of children's in vivo emotional responses to social challenges.

This study examined the role of social goals in shaping children's in vivo emotional responses during a challenging dyadic peer interaction. In all, 132 children (Mage  = 9.46 years, SD = 0.33; 50% girls; 72% White) participated in a dyadic social challenge (conflict-of-interest situation) and reported their social goals and emotions during the task, and observers coded child emotions and dyad negativity. Mastery goals predicted more positive emotions unless interactions were highly negative. Performance-avoidance goals predicted more negative emotions, particularly in the context of negative interactions and disappointing outcomes. Performance-approach goals predicted less negative displayed emotions but more negative self-reported emotions. Findings provide novel insights into how context-specific social goals contribute to affective social competence during peer interactions.

The Potential Therapeutic Role of Mesenchymal Stem Cells-Derived Exosomes in Osteoradionecrosis.

As one of the most serious complications of radiotherapy, osteoradionecrosis (ORN) seriously affects the quality of life of patients and even leads to death. Vascular injury and immune disorders are the main causes of bone lesions. The traditional conservative treatment of ORN has a low cure rate and high recurrent. Exosomes are a type of extracellular bilayer lipid vesicles secreted by almost all cell types. It contains cytokines, proteins, mRNA, miRNA, and other bioactive cargos, which contribute to several distinct processes. The favorable biological functions of mesenchymal stem cells-derived exosomes (MSC exosomes) include angiogenesis, immunomodulation, bone regeneration, and ferroptosis regulation. Exploring the characteristic of ORN and MSC exosomes can promote bone regeneration therapies. In this review, we summarized the current knowledge of ORN and MSC exosomes and highlighted the potential application of MSC exosomes in ORN treatment.

Transcriptome analysis reveals antioxidant defense mechanisms in the red swamp crayfish Procambarus clarkia after exposure to chromium.

Chromium (Cr) as a chromate anion has a strong redox capacity that seriously threatens the ecological environment and human health. Cr can contaminate water and impart toxicity to aquatic species. Procambarus clarkii is an important food source that once represented a large proportion of the aquaculture industry due to its rapid reproduction and high economic value. However, there have been reports on the death of P. clarkii due to heavy metal pollution. The underlying mechanism regarding heavy metal toxicity was studied in this paper. The transcriptome data of hemocytes extracted from P. clarkii injected with Cr were analyzed by high-throughput sequencing and compared to the control group. In total, 48,128,748 clean reads were obtained in the treatment group and 56,480,556 clean reads were obtained in the control group. The reads were assembled using Trinity and the identified unigenes were then annotated. Then, 421 differentially-expressed genes (DEGs) were found, 170 of which were upregulated and 251 downregulated. Many of these genes were found to be related to glutathione metabolism and transportation. The glutathione metabolic pathway of P. clarkii was thus activated by Cr exposure to detoxify and maintain body function. Validation of DEGs with quantitative real-time PCR confirms the changes in gene expression. Thus, this study provides data supporting a glutathione-focused response of P. clarkii to exposure to heavy metals.

Transcriptome analysis of differentially expressed genes in the red swamp crayfish Procambarus clarkii challenged with Aeromonas hydrophila.

As an important economic species in China, aquaculture of the crayfish Procambarus clarkii has suffered huge losses due to infection by pathogenic bacteria, mainly by Aeromonas hydrophila, which leads to high mortality and huge economic loss. To better understand the immune response of crayfish against bacterial infection, we compared and analyzed transcriptome data of hepatopancreatic tissue from P. clarkii that were either challenged with A. hydrophila or treated with PBS. After assembly and annotation of the data, 32,041 unigenes with an average length of 1512 base pairs were identified. Compared to control group, Differential gene expression (DEG) analysis revealed 608 DEGs were obtained, of which 274 unigenes were upregulated and 334 were downregulated in the A. hydrophila group. Furthermore, the expression levels of eight selected immune-related DEGs were validated by qRT-PCR, substantiating the reliability of RNA-seq results. This study not only provides effective data support for immune defense strategies of P. clarkii in response to bacterial infections, but also provides new information about the P. clarkii immune system and defense mechanisms, and a valuable basis for further studies to elucidate the molecular immune mechanisms of this species.

The Interplay of Chronic Interpersonal Stress and Rumination on Nonsuicidal Self-Injury in Youth.

Nonsuicidal self-injury (NSSI) describes deliberate self-destructive behaviors without the intention to die. Little is known about what factors contribute to NSSI especially among youth. The current study tested two conceptual models for how chronic interpersonal stress and rumination may contribute to NSSI engagement across 18 months in a community sample of youth: (1) a mediation pathway based on the Emotional Cascade Model (i.e., stress contributes to rumination and then to subsequent NSSI), and (2) a moderation model based on the cognitive vulnerability-stress framework (i.e., rumination moderates the relation between stress and NSSI). 516 youth aged 7-16 (Mage = 12.0; 56% female; 90% Non-Hispanic or Non-Latinx) reported on ongoing interpersonal stress occurring between T1-T2 (every 6 months from T1 to 12 months) via the Youth Life Stress Interview, rumination via the Children's Response Styles Questionnaire (at T1 and 18 months later, T2), and NSSI engagement every six months from 18 to 36 months (T2-T3) via the Self-Injurious Thoughts and Behaviors Interview. Interpersonal stress predicted later rumination (b = .43, p < .01), rumination forecasted later NSSI occurrence (OR = 1.06, p < .01), and mediation was supported via a significant indirect effect of interpersonal stress on NSSI through rumination (b = .03, 95% CI = .01, .07). Rumination did not significantly moderate the relation between stress and NSSI. The prospective relation between chronic interpersonal stress and NSSI engagement was partly explained by rumination, aligning with the Emotional Cascade Model's prediction that rumination contributes to NSSI. Youth may conduct NSSI to interrupt rumination elicited by chronic interpersonal stress.

Differentially expressed genes involved in immune pathways from yellowhead catfish (Tachysurus fulvidraco) after poly (I:C) challenge.

Yellowhead catfish (Tachysurus fulvidraco) is an important aquaculture fish species in China with a high market value. Infectious diseases pose serious threats in farmed fish species, and although vaccines can prevent certain infections, they rely on potent adjuvants. In this study, we analyzed the transcriptomic profiles of spleens from poly (I:C)-treated T. fulvidraco. We obtained 46,362,922 reads corresponding to 490,926 transcripts and 318,059 genes. Gene annotation using different databases and subsequent differential gene expression analyses led to the identification of 5587 differentially expressed genes (DEGs), of which 2473 were up-regulated and 3114 were down-regulated in poly (I:C)-treated fish. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses of DEGs revealed the significant dysregulation of immune- and cancer-related genes in the spleens of poly (I:C)-treated fish. Notably, several components of JAK-STAT, MAPK, and p53 signaling pathways were significantly dysregulated in response to poly (I:C) treatment. Quantitative real-time PCR (qRT-PCR) analysis of 11 randomly selected immune response genes confirmed the reliability of our findings. In conclusion, our findings provide novel insight into the immune responses of T. fulvidraco and suggest that poly (I:C) may represent a promising adjuvant of fish vaccines.

Transcriptome analysis of immune-related genes in Sesarmops sinensis hepatopancreas in reaction to peptidoglycan challenge.

Sesarmops sinensis is a dominant omnivorous crab species, which plays an important ecological function in salt marsh ecosystems. To better understand its immune system and immune related genes under pathogen infection, the transcriptome was analyzed by comparing the data of S. sinensis hepatopancreas stimulated by PBS and PGN. A set of assembly and annotation identified 39,039 unigenes with an average length of 1105 bp, obtaining 1300 differentially expressed genes (DEGs) in all, which included 466 remarkably up-regulated unigenes and 834 remarkably down-regulated unigenes. In addition, based on mensurable real time-polymerase chain reaction and high-throughput sequencing, several immune responsive genes were found to be markedly up-regulated under PGN stimulation. In conclusion, in addition to enriching the existing transcriptome data of S. sinensis, this study also clarified the immune response of S. sinensis to PGN stimulation, which will help us to further understand the crustacean's immune system.

A complement factor I (CFI) gene mediates innate immune responses in yellow catfish Pelteobagrus fulvidraco.

This study isolated CFI gene from Pelteobagrus fulvidraco and named it PfCFI. The cDNA of PfCFI is 2374 bp long, including a 52 bp 5' untranslated sequence, a 222 bp 3' untranslated sequence, and an open reading frame (ORF) of 2100 bp encoding polypeptide consisting of 699 amino acids. Phylogenetic analysis revealed that the PfCFI was closely related to CFI of Ictalurus punctatus. Real-time quantitative reverse transcription-PCR (qRT-PCR) analysis indicate that there is the PfCFI gene which expressed in all the rest of tested tissues in varied levels, and mainly distributed in liver and least in heart. The reseachers induce the expressions level of PfCFI gene in liver, spleen, head kidney and blood at different points in time after challenged with lipopolysaccharide (LPS), and polyriboinosinic polyribocytidylic acid (poly I:C), respectively. Together these results suggested that CFI gene plays an important role in resistance to pathogens in yellow catfish immunity.

Supramolecular Non-Helical One-Dimensional Channels and Microtubes Assembled from Enantiomers of Difluorenol.

The design and assembly of photoelectro-active molecular channel structures is of great importance because of their advantages in charge mobility, photo-induced electron transfer, proton conduction, and exciton transport. Herein, we report the use of racemic 9,9'-diphenyl-[2,2'-bifluorene]-9,9'-diol (DPFOH) enantiomers to produce non-helical 1D channel structures. Although the individual molecule does not present any molecular symmetry, two pairs of racemic DPFOH enantiomers can form a C2 -symmetric closed loop via the stereoscopic herringbone assembly. Thanks to the special symmetry derived from the enantiomer pairs, the multiple supramolecular interactions, and the padding from solvent molecules, this conventionally unstable topological structure is achieved. The etching of solvent in 1D channels leads to the formation of microtubes, which exhibit a significant lithium-ion conductivity of 1.77×10-4  S cm, indicating the potential research value of this novel 1D channel structure.

Phylogenetic relationships of Grapsoidea and insights into the higher phylogeny of Brachyuran.

Decapoda is one of the most diverse crustacean orders, and has become an important research subject. However, the phylogenetic relationships among the main lineages of Decapoda remain uncertain, especially in the order Brachyura. Herein, we sequenced the whole mitochondrial genome of V. litterata and constructed a phylogenetic tree to understand its phylogenetic relationships with other species. The results showed that the mitochondrial genome of V. litterata was generally similar to mitogenomes of Metazoa reported in the literature, with a size of 16,247 bp, 37 genes, and a control region. Both AT-skew and GC-skew were negative, indicating more abundant Cs and Ts than Gs and As. The gene arrangement of V. litterata is identical to those of Eriocheir hepuensis, Cyclograpsus granulosus, Hemigrapsus sanguineus, Helicana wuana, and Helice tientsinensis but differs from the pancrustacean ground pattern and typical arrangement of Brachyuran crabs. Phylogenetic reconstruction showed that V. litterata belongs to the Varunidae.

Chromosome-level genome assembly of Paralithodes platypus provides insights into evolution and adaptation of king crabs.

The blue king crab, Paralithodes platypus, which belongs to the family Lithodidae, is a commercially and ecologically important species. However, a high-quality reference genome for the king crab has not yet been reported. Here, we assembled the first chromosome-level blue king crab genome, which contains 104 chromosomes and an N50 length of 51.15 Mb. Furthermore, we determined that the large genome size can be attributed to the insertion of long interspersed nuclear elements and long tandem repeats. Genome assembly assessment showed that 96.54% of the assembled transcripts could be aligned to the assembled genome. Phylogenetic analysis showed the blue king crab to have a close relationship with the Eubrachyura crabs, from which it diverged 272.5 million years ago. Population history analyses indicated that the effective population of the blue king crab declined sharply and then gradually increased from the Cretaceous and Neogene periods, respectively. Furthermore, gene families related to developmental pathways, steroid and thyroid hormone synthesis, and inflammatory regulation were expanded in the genome, suggesting that these genes contributed substantially to the environmental adaptation and unique body plan evolution of the blue king crab. The high-quality reference genome reported here provides a solid molecular basis for further study of the blue king crab's development and environmental adaptation.

Comparative Mitochondrial Genome Analyses of Sesarmid and Other Brachyuran Crabs Reveal Gene Rearrangements and Phylogeny.

Mitochondrial genomes (mitogenomes) are important for understanding molecular evolution and phylogenetic relationships. The complete mitogenome of Perisesarma bidens was determined, which is 15,641 bp in length. The A + T content of P. bidens mitogenome was 74.81%. The AT skew was slightly negative (-0.021). The 22 tRNAs ranged from 65 to 73 bp and were highly A + T biased. All tRNA genes had typical cloverleaf structures, except for the trnS1 gene, which lacked a dihydrouridine (DHU) arm. The gene order within the P. bidens mitogenome was identical to the pancrustacean ground pattern, except for the translocation of the trnH. Additionally, the gene order of trnI-trnQ-trnM in pancrustacean ground pattern became trnQ-trnI-trnM in P. bidens. Phylogenetic analyses supported the inclusion of P. bidens in Sesarmidae and the promotion of Sesarminae to Sesarmidae. The results will help us to better understand the status and evolutionary history of Grapsoidea crabs.

Characterization of the complete mitochondrial genome of Helice latimera and its phylogenetic implications in Brachyura.

Mitochondrial genomes (mitogenomes) help advance our learning of molecular evolution and phylogenetic relationships. The mitogenome of H. latimera is 16,246 bp in length, which typically contains 37 animal mitogenome genes consisting of 13 protein-coding genes (PCGs), two rRNA genes, and 22 tRNA genes, as well as a control region. The AT content of H. latimera is 69.1%. The A + T skew of the mitogenome of H. latimera was slightly negative (-0.017). The size of Thirteen PCGs is from 162 bp to 1731 bp. Twenty-two tRNA genes ranged from 62 to 73 bp and were highly A + T biased. All tRNA genes owed a typical cloverleaf structure, not including the trnS1 gene lacking a dihydroxyuridine arm. One PCG, two rRNAs, and 12 of the tRNAs were rearranged compared to the pancrustacean gene order. Phylogenetic analysis revealed the locationt of H. latimera among the Varunidae family.