Objective To gain insights into the biological characteristics of different populations of Culex tritaeniorhynchus within and around the Yellow Sea wetland from the perspective of the occurrence of resistance, we investigated the levels of resistance to deltamethrin and kdr gene mutation in the wetland and its peripheral areas. Methods Specimens were collected from Cx. tritaeniorhynchus populations at two monitoring sites in the Rare Bird National Nature Reserve and Tiaozi Ni Wetland Scenic Area, and also from two populations in Yancheng City and the Liuhe District of Nanjing, and the resistance of these mosquitoes to deltamethrin was determined using the CDC biotest bottle method. For each concentration of deltamethrin assessed, a random subset of exposed specimens was selected for amplification of the kdr gene fragment, followed by Sanger sequencing to identify and analyze resistance-associated mutations. Results The LC50 levels of deltamethrin among mosquitoes from the four populations in Luhe, Yancheng, the Rare Bird National Nature Reserve and the Tiaozi Ni Wetland Scenic Area were 2.048 5, 7.798 2, 3.473 3, and 17.695 5 mg/mL, respectively, with corresponding concentrations of deltamethrin ranging from 0.005 to 5.000,0.050 to 50.000,0.050 to 25.000 and 0.050 to 50.000 mg/mL, respectively. Furthermore, the ranges of the KT50 values were 11.76-107.43, 67.05-216.30,29.77-107.43 and 28.40-329.51 min; the 1-h knockdown rates were 34.58%-99.15%, 9.52%-43.80%, 55.09%-73.01%, and 10.09%-68.07%; and the 24-h mortality rates were 12.15%-67.52%,9.52%-79.56%,13.17%-82.21%, and 11.01%-78.99%, respectively. With respect to kdr gene mutation, we assayed a total of 63,70,59, and 57 mosquitoes for the four populations, for which we detected L1014F mutation frequencies of 14.29%, 35.00%, 20.34%, and 31.58%, respectively, with a majority of these mutations being heterozygous for resistance. In addition, five adult mosquitoes were identified has having synonymous mutations at site 1011[i. e. , AAT(asparagine)mutation to AAC(asparagine)]. Conclusions Our findings revealed the clear resistance of Cx. tritaeniorhynchus to deltamethrin in the Yancheng region of the Yellow Sea wetland, and the resistance phenotype and kdr frequency of Cx. tritaeniorhynchus in the wetland environment were comparable to those of Cx. tritaeniorhynchus in the wetland environment, thereby indicating that the resistance of different populations of Cx. tritaeniorhynchus was homogeneous under the pressure of different insecticide selection within and around the wetland. However, the underlying mechanisms need to be further studied.

This study aims to explore the effects of Buzhong Yiqi Decoction(BYD) on the cyclic guanosine monophosphate-adenosine monophosphate synthase(cGAS)-stimulator of interferon genes(STING) signaling pathway in the mouse model of autoimmune thyroiditis(AIT) and the mechanism of BYD in alleviating the immune injury. Forty-eight NOD.H-2~(h4) mice were assigned into normal, model, low-, medium-, and high-dose BYD, and selenium yeast tablets groups(n=8). Mice of 8 weeks old were treated with 0.05% sodium iodide solution for 8 weeks for the modeling of AIT and then administrated with corresponding drugs by gavage for 8 weeks before sampling. High performance liquid chromatography was employed to measure the astragaloside Ⅳ content in BYD. Hematoxylin-eosin staining was employed to observe the pathological changes in the mouse thyroid tissue. Enzyme-linked immunosorbent assay was employed to measure the serum levels of thyroid peroxidase antibody(TPO-Ab), thyroglobulin antibody(TgAb), and interferon-γ(IFN-γ). Flow cytometry was employed to detect the distribution of T cell subsets in the spleen. The immunohistochemical method was used to detect the expression of cGAS, STING, TANK-binding kinase 1(TBK1), and interferon regulatory factor 3(IRF3). Real-time PCR and Western blot were employed to determine the mRNA and protein levels, respectively, of markers related to the cGAS-STING signaling pathway in the thyroid tissue. The results showed that the content of astragaloside Ⅳ in BYD was(7.06±0.08) mg·mL~(-1). Compared with the normal group, the model group showed disrupted structures of thyroid follicular epithelial cells, massive infiltration of lymphocytes, and elevated levels of TgAb and TPO-Ab. Compared with the model group, the four treatment groups showed intact epithelial cells, reduced lymphocyte infiltration, and lowered levels of TgAb and TPO-Ab. Compared with the normal group, the model group showed increases in the proportions of Th1 and Th17 cells, a decrease in the proportion of Th2 cells, and an increase in the IFN-γ level. Compared with the model group, the four treatment groups presented decreased proportions of Th1 and Th17 cells and lowered levels of IFN-γ, and the medium-dose BYD group showed an increase in the proportion of Th2 cells. Compared with the normal group, the modeling up-regulated the mRNA levels of cGAS, STING, TBK1, and IRF3 and the protein levels of cGAS, p-STING, p-TBK1, and p-IRF3. Compared with the model group, the four treatment groups showed reduced levels of cGAS, STING, TBK1, and IRF3-positive products, down-regulated mRNA levels of cGAS, STING, and TBK1, and down-regulated protein levels of cGAS and p-STING. The high-dose BYD group showed down-regulations in the mRNA level of IRF3 and the protein levels of p-TBK1 and p-IRF3. The above results indicate that BYD can repair the imbalance of T cell subsets, alleviate immune injury, and reduce thyroid lymphocyte infiltration in AIT mice by inhibiting the cGAS-STING signaling pathway.
Animals ; Drugs, Chinese Herbal/administration & dosage* ; Signal Transduction/drug effects* ; Thyroiditis, Autoimmune/metabolism* ; Mice ; Membrane Proteins/metabolism* ; Mice, Inbred NOD ; Humans ; Female ; Nucleotidyltransferases/metabolism* ; Male ; Disease Models, Animal

Objective:To investigate the safety and efficacy of laparoscopic simultaneous bilateral adrenalectomy in treating ectopic ACTH syndrome (ACTH)caused by medullary thyroid carcinoma(MTC).Methods:A 56-year-old male patient was admitted after MTC surgery and 7 months of general fatigue. The patient had a history of two open thyroid surgeries for medullary thyroid carcinoma, with previous pathological reports indicating lymph node metastasis in the upper mediastinum and mediastinum, accompanied by weak cytoplasmic expression of ACTH and negative CRH staining. After the operation, the patient developed diabetes, hypertension, and hypokalemia. Upon admission, the patient presented with a blood pressure reading of 200/95 mmHg (1 mmHg = 0.133 kPa), a weight of 61.5 kg, a height of 160 cm, a body mass index (BMI)of 24.02 kg/cm 2, and a waist circumference of 83 cm. Laboratory tests revealed the following: blood potassium level of 2.71 mmol/L, blood calcium level of 1.47 mmol/L, parathyroid hormone level of 6.0 pg/ml, fasting blood glucose level of 10.51 mmol/L, glycated hemoglobin level of 8.2%, blood calcitonin level exceeding 2 000 pg/ml, and blood CEA level of 70.8 μg/L. The plasma ACTH levels at 8∶00, 16∶00, and 24∶00 were 189.0, 125.0, and 65.0 pg/ml, respectively. Serum cortisol levels at 08∶00, 16∶00, and 24∶00 were 429.30, 408.14, and 446.61 μg/L, respectively. The 24-hour urine free cortisol measurement was 1 200 μg, and after the midnight 1mg dexamethasone suppression test at 8∶00, the plasma ACTH level was 183.0 pg/ml, and the serum cortisol level was 538.27 μg/L. The aldosterone level in standing position after 2 hours was 8.2 pg/ml. There were no significant abnormality in catecholamine hormone detection or thyroid function in blood and urine samples. An 18F-FDG-PET/CT examination showed multiple lymph node metastases in the neck, while an abdominal CT scan revealed bilateral adrenal hyperplasia. Enhanced MRI revealed pituitary gland thinning, and lung CT and sputum culture examinations showed scattered multiple lung infections. After a multidisciplinary discussion, the patient was diagnosed with EAS, postoperative MTC metastasis, diabetes, hypertension, hypokalemia, pulmonary infection, mild anemia, liver dysfunction, hypoparathyroidism, and hypocalcemia. The patient were accepted laparoscopic bilateral adrenalectomy via an abdominal approach under general anesthesia. The left adrenal gland was removed first, followed by the right adrenal gland after repositioning. Results:The surgery was successful with a surgical duration of approximately 60 minutes and an intraoperative bleeding volume of about 20 ml. No surgical complications occurred during the perioperative period. Pathological examination confirmed nodular hyperplasia of the adrenal cortex and bilateral adrenal medullary hyperplasia with negative ACTH staining. After a 3-month postoperative follow-up, blood calcitonin levels remained above 2000 pg/ml. The blood ACTH levels at 1 week, 1 month, and 3 months after surgery were 183.0, 220.0, and 731.0 pg/ml, respectively. However, hypertension, diabetes, and hypokalemia rapidly improved. One month after surgery, blood pressure was 100/80 mmHg, fasting blood glucose was 4.4 mmol/L, and blood potassium was 3.87 mmol/L. Pulmonary infection showed improvement, and no adrenal crisis occurred. Glucocorticoid replacement therapy consisted of 20 mg of hydrocortisone tablets in the morning and 10 mg in the afternoon, and thyroid hormone replacement therapy involved daily administration of 100 μg of levothyroxine. Genetic testing revealed heterozygous mutations in the Ret gene. The patient is currently undergoing clinical trial treatment with Ret inhibitors.Conclusions:Based on the data from this case and existing literature reports, laparoscopic simultaneous bilateral adrenalectomy might be safe and effective treatment option for EAS caused by unresectable MTC metastasis. It can correct hypertension, diabetes, and hypokalemia and increase the opportunity for MTC treatment.

Allyl isothiocyanate (AITC) is a natural product commonly used in food preservation and pharmaceutical applications. Toxoplasmosis, caused by the protozoan pathogen Toxoplasma gondii, is prevalent globally while the impact of AITC on toxoplasmosis is unclear. We explored the effect of AITC on acute toxoplasmosis. We infected C57BL/6 mice with T. gondii type I RH strain following AITC administration. On the 4th day after infection, which corresponds to the initial stage of infection, we collected serum for the determination of inflammatory cytokine levels. The mice serum of the AITC-administered group contained significantly lower levels of granulocyte colony-stimulating factor, interferon-gamma, interleukin (IL)-23 subunit p19, IL-4, IL-6, and monocyte chemoattractant protein-1. The lifespan of the mice in the AITC-administered group was significantly reduced. In vitro experiments showed that AITC promoted the proliferation of intracellular T. gondii accompanied by the inhibition of IL-4, IL-1β, and IL-6 production in RAW264.7 macrophages. Our results showed that AITC facilitated T. gondii infection in the early stage by inhibiting the production of several inflammatory cytokines.

OBJECTIVES: To identify cuproptosis- and ferroptosis-related genes involved in nonalcoholic fatty liver disease and to determine the diagnostic value of hub genes. METHODS: The gene expression dataset GSE89632 was retrieved from the Gene Expression Omnibus database to identify differentially expressed genes (DEGs) between the non-alcoholic steatohepatitis (NASH) group and the healthy group using the 'limma' package in R software and weighted gene co-expression network analysis. Gene ontology, kyoto encyclopedia of genes and genomes pathway, and single-sample gene set enrichment analyses were performed to identify functional enrichment of DEGs. Ferroptosis- and cuproptosis-related genes were obtained from the FerrDb V2 database and available literatures, respectively. A combined signature for cuproptosis- and ferroptosis-related genes, called CRF, was constructed using the STRING database. Hub genes were identified by overlapping DEGs, WGCNA-derived key genes, and combined signature CRF genes, and validated using the GSE109836 and GSE227714 datasets and real-time quantitative polymerase chain reaction. A nomogram of NASH diagnostic model was established utilizing the 'rms' package in R software based on the hub genes, and the diagnostic value of hub genes was assessed using receiver operating characteristic curve analysis. In addition, immune cell infiltration in NASH versus healthy controls was examined using the CIBERSORT algorithm. The relationships among various infiltrated immune cells were explored with Spearman's correlation analysis. RESULTS: Analysis of GSE89632 identified 236 DEGs between the NASH group and the healthy group. WGCNA highlighted 8 significant modules and 11,095 pivotal genes, of which 330 genes constituted CRF. Intersection analysis identified IL6, IL1B, JUN, NR4A1, and PTGS2 as hub genes. The hub genes were all downregulated in the NASH group, and this result was further verified by the NASH validation dataset and real-time quantitative polymerase chain reaction. Receiver operating characteristic curve analysis confirmed the diagnostic efficacy of these hub genes with areas under the curve of 0.985, 0.941, 1.000, 0.967, and 0.985, respectively. Immune infiltration assessment revealed that gamma delta T cells, M1 macrophages, M2 macrophages, and resting mast cells were predominantly implicated. CONCLUSIONS Our investigation underscores the significant association of cuproptosis- and ferroptosis-related genes, specifically IL6, IL1B, JUN, NR4A1, and PTGS2, with NASH. These findings offer novel insights into the pathogenesis of NASH, potentially guiding future diagnostic and therapeutic strategies.
Non-alcoholic Fatty Liver Disease/pathology* ; Humans ; Ferroptosis/genetics* ; Copper/metabolism* ; Gene Ontology ; Gene Expression Profiling

Allyl isothiocyanate (AITC) is a natural product commonly used in food preservation and pharmaceutical applications. Toxoplasmosis, caused by the protozoan pathogen Toxoplasma gondii, is prevalent globally while the impact of AITC on toxoplasmosis is unclear. We explored the effect of AITC on acute toxoplasmosis. We infected C57BL/6 mice with T. gondii type I RH strain following AITC administration. On the 4th day after infection, which corresponds to the initial stage of infection, we collected serum for the determination of inflammatory cytokine levels. The mice serum of the AITC-administered group contained significantly lower levels of granulocyte colony-stimulating factor, interferon-gamma, interleukin (IL)-23 subunit p19, IL-4, IL-6, and monocyte chemoattractant protein-1. The lifespan of the mice in the AITC-administered group was significantly reduced. In vitro experiments showed that AITC promoted the proliferation of intracellular T. gondii accompanied by the inhibition of IL-4, IL-1β, and IL-6 production in RAW264.7 macrophages. Our results showed that AITC facilitated T. gondii infection in the early stage by inhibiting the production of several inflammatory cytokines.

Allyl isothiocyanate (AITC) is a natural product commonly used in food preservation and pharmaceutical applications. Toxoplasmosis, caused by the protozoan pathogen Toxoplasma gondii, is prevalent globally while the impact of AITC on toxoplasmosis is unclear. We explored the effect of AITC on acute toxoplasmosis. We infected C57BL/6 mice with T. gondii type I RH strain following AITC administration. On the 4th day after infection, which corresponds to the initial stage of infection, we collected serum for the determination of inflammatory cytokine levels. The mice serum of the AITC-administered group contained significantly lower levels of granulocyte colony-stimulating factor, interferon-gamma, interleukin (IL)-23 subunit p19, IL-4, IL-6, and monocyte chemoattractant protein-1. The lifespan of the mice in the AITC-administered group was significantly reduced. In vitro experiments showed that AITC promoted the proliferation of intracellular T. gondii accompanied by the inhibition of IL-4, IL-1β, and IL-6 production in RAW264.7 macrophages. Our results showed that AITC facilitated T. gondii infection in the early stage by inhibiting the production of several inflammatory cytokines.

Allyl isothiocyanate (AITC) is a natural product commonly used in food preservation and pharmaceutical applications. Toxoplasmosis, caused by the protozoan pathogen Toxoplasma gondii, is prevalent globally while the impact of AITC on toxoplasmosis is unclear. We explored the effect of AITC on acute toxoplasmosis. We infected C57BL/6 mice with T. gondii type I RH strain following AITC administration. On the 4th day after infection, which corresponds to the initial stage of infection, we collected serum for the determination of inflammatory cytokine levels. The mice serum of the AITC-administered group contained significantly lower levels of granulocyte colony-stimulating factor, interferon-gamma, interleukin (IL)-23 subunit p19, IL-4, IL-6, and monocyte chemoattractant protein-1. The lifespan of the mice in the AITC-administered group was significantly reduced. In vitro experiments showed that AITC promoted the proliferation of intracellular T. gondii accompanied by the inhibition of IL-4, IL-1β, and IL-6 production in RAW264.7 macrophages. Our results showed that AITC facilitated T. gondii infection in the early stage by inhibiting the production of several inflammatory cytokines.

Allyl isothiocyanate (AITC) is a natural product commonly used in food preservation and pharmaceutical applications. Toxoplasmosis, caused by the protozoan pathogen Toxoplasma gondii, is prevalent globally while the impact of AITC on toxoplasmosis is unclear. We explored the effect of AITC on acute toxoplasmosis. We infected C57BL/6 mice with T. gondii type I RH strain following AITC administration. On the 4th day after infection, which corresponds to the initial stage of infection, we collected serum for the determination of inflammatory cytokine levels. The mice serum of the AITC-administered group contained significantly lower levels of granulocyte colony-stimulating factor, interferon-gamma, interleukin (IL)-23 subunit p19, IL-4, IL-6, and monocyte chemoattractant protein-1. The lifespan of the mice in the AITC-administered group was significantly reduced. In vitro experiments showed that AITC promoted the proliferation of intracellular T. gondii accompanied by the inhibition of IL-4, IL-1β, and IL-6 production in RAW264.7 macrophages. Our results showed that AITC facilitated T. gondii infection in the early stage by inhibiting the production of several inflammatory cytokines.

ObjectiveAt the end of November 2022， Guangzhou implemented the latest Covid-19 epidemic prevention policy and began to gradually lift the lockdown. However， under the new epidemic prevention situation， the situation of SARS-CoV-2 infection in hospitalized patients in China is still unclear. Accordingly， this paper aims to study the SARS-CoV-2 infection of hospitalized patients in Guangzhou under the new epidemic prevention and control situation. MethodsThe results of SARS-CoV-2 nucleic acid tests in our hospital from the end of November 2022 to the beginning of February 2023 were retrospectively analyzed. The positive rate of SARS-CoV-2 nucleic acid tests in outpatients and inpatients under the new epidemic prevention situation， and the nosocomial infection of SARS-CoV-2 in inpatients were statistically analyzed. ResultsThis study retrospectively analyzed the SARS-CoV-2 nucleic acid test results of 13 959 patients， including 6 966 outpatients and 6 993 inpatients. On November 30， 2022， the SARS-CoV-2 nucleic acid test results of outpatients began to be positive， indicating that the outbreak of the SARS-CoV-2 infection had begun. On December 7， one case of SARS-CoV-2 nucleic acid test results of hospitalized patients was positive， and nosocomial infections began to break out. On December 15， the positive rate of SARS-CoV-2 nucleic acid test among patients exceeded 40 %， and the epidemic entered its peak period. After the end of December， the test positive rate gradually decreased， but the positive rate of inpatients was always higher than that of outpatients. Compared with December 2022， the positive rate of SARS-CoV-2 nucleic acid test of patients in many departments in January 2023 decreased， but the positive rate of SARS-CoV-2 nucleic acid test of inpatients in the oncology department increased significantly （P < 0.001）. Further analysis found that the nosocomial infection rate of SARS-CoV-2 in inpatients was 86.57 % （329/380）. However， the nosocomial infection rate in lymphoma patients ［58.33 % （14/24）］ was significantly lower than that of the hospitalized patients with other disease types （P < 0.001）. ConclusionThe positive rate of SARS-CoV-2 nucleic acid testing among patients reached its peak in mid-December 2022. In January 2023， the positive rate of SARS-CoV-2 nucleic acid testing gradually decreased， while the number or positive rate of SARS-CoV-2 nucleic acid testing positive patients in some departments increased. The nosocomial infection rate among hospitalized patients is as high as 90 %. There are differences in the nosocomial infection rate of SARS-CoV-2 among inpatients with different disease types. In summary， this study provides preliminary data on the epidemiological characteristics of SARS-CoV-2 infection among hospitalized patients in Guangzhou， as well as the protection against infection among hospitalized patients and cross-infection between medical staffs and patients.