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Objective: To investigate the oxidation mechanism of walnut kernels. Methods: Walnut kernels were subjected to vacuum or non-vacuum packaging before accelerated oxidation at 60 ℃. Samples were taken periodically for ultrastructural and morphological observation by transmission electron microscopy (TEM) and scanning electron microscopy (SEM) and for the measurement of oxidation indicators such as peroxide value, carbonyl value, and cell membrane permeability. Changes in cellular ultrastructure during the oxidation process of walnut kernels were analyzed and compared under vacuum and non-vacuum packaging conditions. The oxidation process was assessed from a multi-dimensional perspective and the oxidation mechanism was explored as well. Results: Under non-vacuum conditions, walnut kernel oil began to become sticky on the 14th day of accelerated oxidation and then gradually became stickier. With oxidation time, intracellular protein bodies (PB) exhibited sequential changes including an increase in surface roughness, aggregation, movement toward the cell periphery, decomposition and reassembly. The oil body membrane (OBM) was ruptured and the intracellular reticulum was disrupted, thus causing oil leakage into the intercellular space and resulting in a reduction in the cell volume. Cellular structural changes were much smaller under vacuum conditions than under non-vacuum conditions, the oil started to become sticky on the 28th day, and the oxidation indicators were significantly lower than those under non-vacuum conditions (P < 0.01). The trend of changes in three oxidation indicators was consistent with that of cell ultrastructure. Conclusion: TEM and SEM combined with oxidation indicators can provide clearer insights into cellular ultrastructural changes in walnut kernels after oxidation. The oxidation mechanisms of vacuum and non-vacuum packaged walnut kernels are the same, but their oxidation degrees are different. Notably, vacuum packaging can significantly reduce the oxidation of walnut kernels.

Objective To summarize the clinical features of unilateral Wallenberg syndrome. Methods and Results The clinical data of 28 patients with unilateral Wallenberg syndrome admitted to Shengli Oilfield Central Hospital and Weifang People′s Hospital from March 2005 to November 2021 were retrospectively analyzed. Clinical manifestations were pain and temperature disturbance in 26 cases (92.86%), ataxia in 24 cases (85.71%), numbness in 21 cases (75%), dizziness in 20 cases (71.43%); MRI showed dorsolateral medulla oblongata infarction lesion in all patients, 9 cases (32.14%) with lesions located in the rostral medulla oblongata, 7 cases (25%) in the central region and 12 cases (42.86%) in the caudal region; CTA showed there were responsible arteries in 27 cases (96.43%), including vertebral artery stenosis (15 cases, 53.57%), posterior inferior cerebellar artery occlusion (10 cases, 35.71%), bilateral vertebral artery occlusion and unilateral vertebral artery dissection (one case each, 3.57%). Eleven cases (39.29%) were treated with intravenous thrombolysis, including 3 cases with bridging vertebral artery stent implantation and 17 cases (60.71%) with conservative treatment. 19 cases (67.86%) had a good prognosis, while 9 cases (32.14%) had a poor prognosis. There are 5 cases (17.86%) complicated with respiratory failure, one case with good prognosis after symptomatic treatment, one case of ventilator assisted ventilation, one case was severely disabled, and 2 cases were dead. Conclusions Unilateral Wallenberg syndrome has multiple clinical manifestations, imaging examination has great significance for clear diagnosis, some patients may develop respiratory failure and their respiratory function should be closely monitored.

Abstract Background Oriental river prawn (Macrobrachium nipponense) is one of the most dominant species in shrimp farming in China, which is a rich source of protein and contributes to a significant impact on the quality of human life. Thus, more complete and accurate annotation of gene models are important for the breeding research of oriental river prawn. Results A full-length transcriptome of oriental river prawn muscle was obtained using the PacBio Sequel platform. Then, 37.99 Gb of subreads were sequenced, including 584,498 circular consensus sequences, among which 512,216 were full length non-chimeric sequences. After Illumina-based correction of long PacBio reads, 6,599 error-corrected isoforms were identified. Transcriptome structural analysis revealed 2,263 and 2,555 alternative splicing (AS) events and alternative polyadenylation (APA) sites, respectively. In total, 620 novel genes (NGs), 197 putative transcription factors (TFs), and 291 novel long non-coding RNAs (lncRNAs) were identified. Conclusions In summary, this study offers novel insights into the transcriptome complexity and diversity of this prawn species, and provides valuable information for understanding the genomic structure and improving the draft genome annotation of oriental river prawn.

As the primary natural barrier that protects against adverse environmental conditions, the skin plays a crucial role in the innate immune response of fish, particularly in relation to bacterial infections. However, due to the diverse functionality and intricate anatomical and cellular composition of the skin, deciphering the immune response of the host is a challenging task. In this study, single nuclei RNA-sequencing (snRNA-seq) was performed on skin biopsies obtained from Chinese longsnout catfish (Leiocassis longirostris), comparing Aeromonas hydrophila-infected subjects to healthy control subjects. A total of 19,581 single nuclei cells were sequenced using 10x Genomics (10,400 in the control group and 9,181 in the treated group). Based on expressed unique transcriptional profiles, 33 cell clusters were identified and classified into 12 cell types including keratinocyte (KC), fibroblast (FB), endothelial cells (EC), secretory cells (SC), immune cells, smooth muscle cells (SMC), and other cells such as pericyte (PC), brush cell (BC), red blood cell (RBC), neuroendocrine cell (NDC), neuron cells (NC), and melanocyte (MC). Among these, three clusters of KCs, namely, KC1, KC2, and KC5 exhibited significant expansion after A. hydrophila infection. Analysis of pathway enrichment revealed that KC1 was primarily involved in environmental signal transduction, KC2 was primarily involved in endocrine function, and KC5 was primarily involved in metabolism. Finally, our findings suggest that neutrophils may play a crucial role in combating A. hydrophila infections. In summary, this study not only provides the first detailed comprehensive map of all cell types present in the skin of teleost fish but also sheds light on the immune response mechanism of the skin following A. hydrophila infection in Chinese longsnout catfish.

Abstract Background Emergent endotracheal intubation (ETI) is a serious complication after Oesophagectomy. It is still unclear that perioperative risk factors and prognosis of these patients with ETI. Methods Between January 2015 and December 2018, 21 patients who received ETI after esophagectomy were enrolled (ETI group) at the department of thoracic surgery, Fujian Union hospital, China. Each study subject matched one patient who underwent the same surgery in the current era were included (control group). Patient characteristics and perioperative factors were collected. Results Patients with ETI were older than those without ETI (p = 0.022). The patients with history of smoking in ETI group were significantly more than those in control group (p = 0.013). The stay-time of postanesthesia care unit (PACU) in ETI group was significantly longer than that in control group (p = 0.001). The incidence of anastomotic leak or electrolyte disorder in ETI group was also higher than that in control group (p = 0.014; p = 0.002). Logistic regression analysis indicated history of smoke (HR 6.43, 95%CI 1.39–29.76, p = 0.017) and longer stay time of PACU (HR 1.04, 95%CI 1.01–1.83, p = 0.020) both were independently associated with higher risks of ETI. The 3-year overall survival (OS) rates were 47.6% in patients with ETI and 85.7% in patients without ETI (HR 4.72, 95%CI 1.31-17.00, p = 0.018). COX regression analysis indicated ETI was an independent risk factor affecting the OS. Conclusion The study indicated that history of smoking and longer stay-time in PACU both were independently associated with higher risks of ETI; and ETI was an independent risk factor affecting the OS of patients after esophagectomy. Trial registration This trial was retrospectively registered with the registration number of ChiCTR2000038549.

To analyze the genetic background of ‘white’ type Northern snakehead (Channa argus), and provide atheoretical basis for breeding of C. argus, the investigation of genetic diversity and population structure were investigated based on the complete sequences of mitochondrial DNA D-loop region for three cultured ‘white’ type C. argus populations, and four ‘bicolor’ type C. argus populations were used to compare with them; 28 mutation loci and 30 haplotypes were found in the D-loop sequence of all individuals with a total length of 907 bp. The highest haplotype diversity (Hd) and nucleotide diversity (Pi) in the ‘white’ type C. argus populations were 0.505 and 0.00057, respectively, which lower than those in the ‘bicolor’ type C. argus populations (Hd = 0.911, Pi = 0.00326). Population differentiation values (FST) show that the four ‘bicolor’ type C. argus populations had obvious genetic differentiation (Fst: 0.21902–0.49428. p 0.05). The phylogenetic tree and Median Joining (MJ) network showed that the genetic distance among ‘white’ type C. argus populations is very close. Therefore, much attention should be paid to protecting population genetic diversity and avoiding inbreeding in the breeding of ‘white’ type C. argus.

With the development of the aquaculture industry, finding effective ways to improve the health and production efficiency of aquatic animals has become a research hotspot. Probiotics help reduce the risk of diseases in aquaculture animals and improve production performance. Lactobacillus acidophilus belongs to the genus Lactobacillus, and is a gram-positive probiotic, which exists widely in the natural environment and the digestive system of animals. It can regulate pH value, improve the growth performance and feed utilization of animals, and enhance the immune function of animals. This paper reviewed the application of Lactobacillus acidophilus in promoting the growth and nutrient utilization of aquatic animals, enhancing the immune function of aquatic animals and improving the intestinal structure and function of aquatic animals. It also discussed the role of Lactobacillus acidophilus in the prevention and control of bacterial diseases and water quality regulation, and put forward suggestions for future research direction of Lactobacillus acidophilus, to provide reference for the research and development of Lactobacillus acidophilus products and the sustainable development of aquaculture industry. [ABSTRACT FROM AUTHOR]