First report of leaf spot on Elaeagnus pungens caused by Neopestalotiopsis clavispora in China.

Elaeagnus pungens Thunb. is a common traditional Chinese herbal medicine. It has high medicinal, edible, and ornamental value. In Sep. 2020, a leaf spot disease was found on E. pungens in the campus of Nanjing Forestry University, China (31°36'51"N, 119°11'8"E). The incidence rate was ca. 77%. The disease primarily appeared as small brown spots on the leaves. Then, the spots enlarged and coalesced into regular or irregular gray necrotic lesions with dark margins. At the late stage of symptom development, black spots (acervulus) appeared on the necrotic lesions (Fig. S2A-C). Eight symptomatic leaves were collected and surface-sterilized using 75% ethanol for 30 s followed by 1% NaClO for 1 min, and then washed three times in sterile distilled water. Cuttings (ca. 5×5 mm) were made from the margins of the lesions and placed on 2% of potato dextrose agar (PDA) in Petri plates and incubated at 25 ± 2 °C for 5 days. The isolation frequency of pathogens from diseased tissues was ca. 100%. A total of four fungal isolates 3-3-1, 3-3-2, 3-3-3, and 3-3-4 were obtained using the monosporic isolation method and stored in the Forest Pathology Laboratory at Nanjing Forestry University. For molecular identification, the internal transcribed spacer (ITS), partial translation elongation factor 1-alpha (TEF1-α), and partial ß-tubulin (TUB2) were amplified from the isolate 3-3-1, 3-3-2, 3-3-3 and 3-3-4, with the corresponding primer sets published in Maharachchikumbura et al. (2014). The amplicons of ITS (ON510047, ON510048, ON510070, and ON510069), TEF1-α (ON808445, ON808446, ON808447, and ON808448), and TUB2 (ON808449, ON808450, ON808451, and ON808452) generated from the isolate 3-3-1, 3-3-2, 3-3-3, and 3-3-4 were sequenced and deposited in GenBank. The ITS, TEF1-α, and TUB2 of the isolate 3-3-1 shared the same nucleotide sequences with the corresponding sequences of the isolate 3-3-2, 3-3-3, and 3-3-4. The ITS, TEF1-α, and TUB2 sequences showed 100%, 97%, and 99% similarity to Neopestalotiopsis clavispora MFLUCC12-0281 (ex-type), respectively. Phylogenetic analysis using concatenated sequences of ITS, TEF1-α, and TUB2 also showed that isolate 3-3-1, 3-3-2, 3-3-3, and 3-3-4 clustered monophyletically with N. clavispora, and supported with a high bootstrap value (80%) (Fig. S1). Since these four isolates were same species based on phylogenetic analysis, isolate 3-3-4 was randomly chosen for the pathogenicity test and morphological analysis. Colonies of the isolate 3-3-4 grown on PDA were white, cottony, and flocculent, contained undulate edges with dense aerial mycelium on the surface, and averaged 12.2 mm d-1 growth at 25 °C (Fig. S2F). Black conidiomata formed superficially, scattered over the PDA at two weeks post incubation, 170.15-1820.32 × 90.33-1230.12 µm (n = 109), and contained slimy black conidial mass (Fig. S2G). Conidiogenous cells were pear-shaped to cylindrical, transparent, and colorless to pale yellow with smooth cell walls (Fig. S2H). Conidia were spindle shaped, five cells, four septa, 18.46-25.9 × 5.3-9.37 µm, (av ± SD = 23.31 ± 1.81 × 7.33 ± 1.07 µm, n = 34) (Fig. S2I). Apical and basal cells were lighter in color, mostly hyaline, and the middle three cells were darker in color, mostly brown. The apical cell showed two to three colorless, transparent unbranched accessory filaments, 9.68-30.59 µm in length, (av ± SD = 20.57 ± 4.52 µm, n = 95), whereas the basal cell only a single appendage, 3.52-9.4 µm in length, (av ± SD = 5.32 ± 1.29 µm, n = 34) (Fig. S2I). These morphological characteristics were similar to N. clavispora described by Daengsuwan et al. (2021). Based on phylogenetic analysis and morphological characteristics, isolate 3-3-1, 3-3-2, 3-3-3, and 3-3-4 were identified as N. clavispora. Healthy potted seedlings of E. pungens (63-85 cm in height, 0.7-1.6 cm in diameter) were selected for the pathogenicity test in vivo. The surface-sterilized leaves were wounded with sterilized needles (1 mm in dia.) and inoculated with mycelial plugs and conidial suspensions, respectively. One part of the leaves were inoculated with mycelial plugs (5 mm in dia.) of isolate 3-3-4. The other part of the leaves were inoculated with 10 µL of conidial suspensions (1×106 spores mL-1). The inoculated plants were kept in a growth chamber at ca. 25 ± 2 °C and ca. 90% RH under a 12-h photoperiod. PDA discs without fungi and sterilized dH2O were used as controls, respectively. All experiments were repeated twice, and each treatment had six replicates at least. After 10 and 12 days post-inoculation, the necrotic lesions appeared on the leaves inoculated with the mycelial plugs and conidial suspensions of the isolate 3-3-4, respectively (Fig. S2D and E). However, no lesions were found on the plants inoculated with PDA discs and dH2O (Fig. S2D and E). Fungal isolates were re-isolated from the infected leaves and shared similar morphological characteristics of colonies and conidia with the original one. Thus, Koch's postulates were fulfilled. Neopestalotiopsis clavispora was determined as the pathogens of a variety of plant diseases such as leaf spot on Taxus chinensis, gray blight on Camellia sinensis, and root and crown rot on strawberry (Kirschbaum et al., 2018; Wang et al., 2019a, b). To our knowledge, this is the first report of leaf spot caused by N. clavispora on E. pungens worldwide. The discovery will be helpful for monitoring and control of this disease in the future.

Transcriptome-Wide Identification and Characterization of the JAZ Gene Family in Mentha canadensis L.

Jasmonate ZIM-domain (JAZ) proteins are the crucial transcriptional repressors in the jasmonic acid (JA) signaling process, and they play pervasive roles in plant development, defense, and plant specialized metabolism. Although numerous JAZ gene families have been discovered across several plants, our knowledge about the JAZ gene family remains limited in the economically and medicinally important Chinese herb Mentha canadensis L. Here, seven non-redundant JAZ genes named McJAZ1-McJAZ7 were identified from our reported M. canadensis transcriptome data. Structural, amino acid composition, and phylogenetic analysis showed that seven McJAZ proteins contained the typical zinc-finger inflorescence meristem (ZIM) domain and JA-associated (Jas) domain as conserved as those in other plants, and they were clustered into four groups (A-D) and distributed into five subgroups (A1, A2, B1, B2, and D). Quantitative real-time PCR (qRT-PCR) analysis showed that seven McJAZ genes displayed differential expression patterns in M. canadensis tissues, and preferentially expressed in flowers. Furthermore, the McJAZ genes expression was differentially induced after Methyl jasmonate (MeJA) treatment, and their transcripts were variable and up- or down-regulated under abscisic acid (ABA), drought, and salt treatments. Subcellular localization analysis revealed that McJAZ proteins are localized in the nucleus or cytoplasm. Yeast two-hybrid (Y2H) assays demonstrated that McJAZ1-5 interacted with McCOI1a, a homolog of Arabidopsis JA receptor AtCOI1, in a coronatine-dependent manner, and most of McJAZ proteins could also form homo- or heterodimers. This present study provides valuable basis for functional analysis and exploitation of the potential candidate McJAZ genes for developing efficient strategies for genetic improvement of M. canadensis.

A circRNA derived from linear HIPK3 relieves the neuronal cell apoptosis in spinal cord injury via ceRNA pattern.

Spinal cord injury (SCI) is a severe disable symptom and has posed a great health threat to many people. Circ-HIPK3 has been reported to modulate the biological behavior of neuronal cells. Thence, in this study, we explored the mechanism of circ-HIPK3 in affecting functions of neuronal cell in SCI. SCI rat model was constructed to evaluate the apoptosis condition of spinal cord tissue. Meanwhile, 100 µM of CoCl2 was used to treat AGE1.HN and PC12 cells to induce in vitro SCI model. Functional assays were implemented to investigate the apoptosis of AGE1.HN and PC12 cells. RNase R and Act D treatment were both conducted to verify the circular character of circ-HIPK3. In this study, circ-HIPK3 was found lowly expressed in SCI rat models and AGE1.HN and PC12 cells induced by 100uM of CoCl2. Meanwhile, inhibited circ-HIPK3 or overexpressed circ-HIPK3 could separately elevate or reduce the apoptosis of AGE1.HN and PC12 cells. Moreover, circ-HIPK3 was identified as the ceRNA against miR-558 to up-regulate DPYSL5. Circ-HIPK3/miR-558/DPYSL5 axis modulated the apoptosis of AGE1.HN and PC12 cells in SCI. In conclusion, circ-HIPK3 relieves the neuronal cell apoptosis through regulating miR-588/DPYSL5 axis in SCI.

Vitamin D Ameliorates Angiotensin II-Induced Human Endothelial Progenitor Cell Injury via the PPAR-γ/HO-1 Pathway.

Vitamin D has an important protective effect on chronic inflammatory disease. Angiotensin II (AngII) triggers vascular damage and plays a key role in vascular diseases via several mechanisms, including inflammation. Conversely, vitamin D has been shown to have an important protective effect on chronic inflammation. There is evidence showing that vitamin D can reverse the effects of AngII, but the molecular mechanisms by which this occurs are not known. Our results demonstrate that vitamin D improved the viability, migration ability, and tube formation of AngII-pretreated endothelial progenitor cells (EPCs) and inhibited the apoptosis of EPCs induced by AngII. Vitamin D also reversed reactive oxygen species production, vascular inflammatory cytokine generation, and nuclear factor kappa-B activation in EPCs induced by AngII. Furthermore, EPC pretreatment with GW9662 (the antagonist for PPAR-γ) or siHO-1 decreased the protective effect of vitamin D on AngII-induced EPC injury. Overall, our data indicate that vitamin D ameliorated AngII-induced abnormal EPC injury by decreasing oxidative stress and inflammatory cytokine levels. These findings also suggest that vitamin D protected EPCs from AngII-induced vascular injury via the activation of the PPAR-γ/HO-1 signaling pathway.

A deficient or an excess of dietary threonine level affects intestinal mucosal integrity and barrier function in broiler chickens.

The aim of this study was to investigate the effects of deficient or excess of dietary threonine (Thr) levels on intestinal integrity and barrier function of broilers. A total of 432 1-day-old commercial broilers (Arbor Acre) were assigned to four experiment groups consisting of six replicates of 18 birds. The treatments were designed as follows: 85%, 100%, 125% and 150% of NRC (Nutrient requirements of poultry (9th edn). Washington, DC: The National Academies Press, 1994) recommendations. The results indicated that expressions of jejunal and ileal secretory immunoglobulin A (sIgA) mRNA were increased linearly or quadratically by increasing Thr (p < .05), and the highest sIgA mRNA abundance was obtained in 125% Thr level. Likewise, the intestinal sIgA content showed similar increasing trend with the intestinal sIgA gene expression in this instance. The high level of Thr inclusion upregulated mucin 2 (MUC2) mRNA expression in the jejunum and ileum (p < .05). In addition, on day 21, the expression levels of jejunal zonula occludens-2 (ZO-2) and ileal zonula occludens-1 (ZO-1) decreased then increased with increasing Thr level (p < .05), whereas, the mRNA expressions of occludin in the jejunum and ileum had no significant difference amongst groups (p >.05). On day 42, Thr treatments did not affect the mRNA abundance of measured genes in the jejunum and ileum (p > .05). These findings suggested that Thr might be a nutrient immunomodulator that affects intestinal barrier function, moreover, 125% of the NRC (1994) recommendations Thr level was optimum.

Histogram analysis of diffusion kurtosis imaging derived maps may distinguish between low and high grade gliomas before surgery.

OBJECTIVE: To investigate the value of histogram analysis of diffusion kurtosis imaging (DKI) maps in the evaluation of glioma grading. METHODS: A total of 39 glioma patients who underwent preoperative magnetic resonance imaging (MRI) were classified into low-grade (13 cases) and high-grade (26 cases) glioma groups. Parametric DKI maps were derived, and histogram metrics between low- and high-grade gliomas were analysed. The optimum diagnostic thresholds of the parameters, area under the receiver operating characteristic curve (AUC), sensitivity, and specificity were achieved using a receiver operating characteristic (ROC). RESULT: Significant differences were observed not only in 12 metrics of histogram DKI parameters (P<0.05), but also in mean diffusivity (MD) and mean kurtosis (MK) values, including age as a covariate (F=19.127, P<0.001 and F=20.894, P<0.001, respectively), between low- and high-grade gliomas. Mean MK was the best independent predictor of differentiating glioma grades (B=18.934, 22.237 adjusted for age, P<0.05). The partial correlation coefficient between fractional anisotropy (FA) and kurtosis fractional anisotropy (KFA) was 0.675 (P<0.001). The AUC of the mean MK, sensitivity, and specificity were 0.925, 88.5% and 84.6%, respectively. CONCLUSIONS: DKI parameters can effectively distinguish between low- and high-grade gliomas. Mean MK is the best independent predictor of differentiating glioma grades. KEY POINTS: • DKI is a new and important method. • DKI can provide additional information on microstructural architecture. • Histogram analysis of DKI may be more effective in glioma grading.

The Levels of Serum Irisin as a Predictor of Insulin Resistance in Han Chinese Adults with Metabolically Healthy Obesity.

BACKGROUND: The aim of this study was to evaluate serum irisin levels and analyze its related factors in Han adults with metabolically healthy obesity. METHODS: This cross-sectional study included 75 metabolically healthy, non-obese adults and 51 metabolically healthy, obese adults. Anthropometric measurements, including height, weight, waist circumference (WC), and blood pressure, were performed. All patients underwent an oral glucose tolerance test (OGTT) after 8 hours of fasting, and the levels of glucose, insulin, lipids, and serum irisin were measured. RESULTS: The levels of serum irisin (5.40 ± 1.69 vs. 6.46 ± 1.37 µg/mL) were significantly lower in the metabolically healthy obese group (p < 0.05). Irisin correlated positively with high density lipoprotein cholesterol (HDL-C) (r = 0.303) and correlated negatively with body mass index (BMI) (r = -0.389), WC (r = -0.324), fasting plasma glucose (FPG) (r = -0.441), HOMA-IR (r = -0.429), triglycerides (TG) (r = -0.185), total cholesterol (TC) (r = -0.209), low density lipoprotein cholesterol (LDL-C) (r = -0.157) (p < 0.05). Multiple regression analysis revealed that FPG (ß = -1.720, p = 0.001) and HOMA-IR (ß = -0.399, p = 0.006) were still significantly associated with irisin. Serum irisin (ß = -0.246, p = 0.005) and BMI (ß = 0.078, p = 0.043) were significant independent predictors for HOMAIR. CONCLUSIONS: Serum irisin levels were reduced in metabolically healthy, obese Han adults. Irisin reduction appears to be associated with elevated FPG and insulin resistance but not obesity. In additional, falling irisin may increase the occurrence of insulin resistance in metabolically healthy Han adults and should be examined in future studies.

New C13 lipids from the marine-derived fungus Trichoderma harzianum.

Chemical examination of the fermentation broth of a sponge-associated fungus Trichoderma harzinum HMS-15-3 led to the isolation of four pairs of new C13 lipid enantiomers namely harzianumols A-H (1a-4b). Their structures were elucidated on the basis of extensive spectroscopic (IR, MS, 1D, and 2D NMR) data analysis, including the modified Mosher's method for the assignment of their absolute configurations. The new compounds were evaluated for antihyperlipidemic effects in HepG2 cells.

[Relative Quantification for Obtaining the IgG Blood Group Antibodies in Plasma by the Absorption and Elution Test].

OBJECTIVE: To establish the absorption and elution test for relatively quantitive obtaining anti-A and anti-B blood group IgG antibodies in the plasma of O-type RhD-positive pregnant women. METHODS: 95 cases of the O-type RhD-positive pregnant women plasma samples were randomly selected for obtaining the IgG antibodies of anti-A and anti-B blood group, with absorption test under 37 ℃ and elution test under 56 ℃, and the IgG anti-A and anti-B antibody titers of plasma and elution were determined by the microcolumn gel anti-human globulin test. The differences and correlation between the titers of IgG antibodies in the eluent and plasma were compared and analyzed. RESULTS: After a logarithmic transformation (Log2), there was no statistically difference between IgG antibody anti-A difference value and anti-B difference value in the eluent and plasma (P >0.05). The titer of IgG antibody in the eluent was positively correlated with the titer of IgG antibody in the plasma (r =0.914). The linear equation for IgG antibody titers fitted by a scatter plot between the eluent and plasma was Y=-3.55+0.96X. CONCLUSION: The absorption and elution test can be used to obtain the anti-A and anti-B IgG antibodies in the plasma of O-type RhD-positive pregnant women, whose plasma origin IgG titer is greater than 8. Meanwhile, the acquisition of anti-A antibodies was as effective as anti-B antibodies at the same time, and the antibodies obtained are positive proportional to their respective concentrations in the plasma.

Application of complete decongestive therapy after lymphaticovenular anastomosis of the lower limb combined with liposuction-A retrospective study research.

BACKGROUND: Complete decongestive therapy (CDT) is a conservative treatment for lymphedema that combines interventions and lifestyle changes. We evaluated the application of CDT after lymphaticovenular anastomosis (LVA) of the lower limb combined with liposuction. METHODS: A total of 55 patients who underwent LVA of the lower limb combined with liposuction from January 2021 to July 2022 were enrolled in the study. The patients were divided into groups A (n = 24) and B (n = 31) according to whether they adhered to CDT treatment during the 12-month follow-up. Group A was the non-adherence CDT group and Group B was the adherence CDT group. Lower Extremity Lymphedema Index (LELI) and Lymphoedema Functioning, Disability, and Health Questionnaire for Lower Limb Lymphoedema (Lymph-ICF-LL) were used as prognostic indicators to observe the remission of postoperative lymphedema symptoms in the two groups. RESULTS: At 6-month and 12-month follow-up, LELI and the score of Lymph-ICF-LL in group B and group A were lower than before the operation (p < .05). The circumference of the affected limb was reduced, and the quality of life was improved in both groups after the operation. The reduction of LELI and Lymph-ICF-LL in group B was higher than in group A, and the difference was statistically significant (p < .05). CONCLUSION: This study preliminarily proves the effectiveness of CDT after LVA of the lower limb combined with liposuction, which can maintain and strengthen the surgical effect. Further, CDT treatment is still needed after the operation, which is necessary to reduce the circumference of the affected limb and improve patients' quality of life.

Latest insights into the global epidemiological features, screening, early diagnosis and prognosis prediction of esophageal squamous cell carcinoma.

As a highly invasive carcinoma, esophageal cancer (EC) was the eighth most prevalent malignancy and the sixth leading cause of cancer-related death worldwide in 2020. Esophageal squamous cell carcinoma (ESCC) is the major histological subtype of EC, and its incidence and mortality rates are decreasing globally. Due to the lack of specific early symptoms, ESCC patients are usually diagnosed with advanced-stage disease with a poor prognosis, and the incidence and mortality rates are still high in many countries, especially in China. Therefore, enormous challenges still exist in the management of ESCC, and novel strategies are urgently needed to further decrease the incidence and mortality rates of ESCC. Although the key molecular mechanisms underlying ESCC pathogenesis have not been fully elucidated, certain promising biomarkers are being investigated to facilitate clinical decision-making. With the advent and advancement of high-throughput technologies, such as genomics, proteomics and metabolomics, valuable biomarkers with high sensitivity, specificity and stability could be identified for ESCC. Herein, we aimed to determine the epidemiological features of ESCC in different regions of the world, especially in China, and focused on novel molecular biomarkers associated with ESCC screening, early diagnosis and prognosis prediction.

Contrasting water-use strategies to climate warming in white birch and larch in a boreal permafrost region.

The effects of rising atmospheric CO2 concentrations (Ca) with climate warming on intrinsic water-use efficiency and radial growth in boreal forests are still poorly understood. We measured tree-ring cellulose δ13C, δ18O, and tree-ring width in Larix dahurica (larch) and Betula platyphylla (white birch), and analyzed their relationships with climate variables in a boreal permafrost region of northeast China over past 68 years covering a pre-warming period (1951-1984; base period) and a warm period (1985-2018; warm period). We found that white birch but not larch significantly increased their radial growth over the warm period. The increased intrinsic water-use efficiency in both species was mainly driven by elevated Ca but not climate warming. White birch but not larch showed significantly positive correlations between tree-ring δ13C, δ18O and summer maximum temperature as well as vapor pressure deficit in the warm period, suggesting a strong stomatal response in the broad-leaved birch to temperature changes. The climate warming-induced radial growth enhancement in white birch is primarily associated with a conservative water-use strategy. In contrast, larch exhibits a profligate water-use strategy. It implies an advantage for white birch over larch in the warming permafrost regions.

Serum immunoglobulin M is associated with the severity of coronary artery disease in adults.

Purpose: The purpose of this study was to investigate the relationship between serum immunoglobulin M (IgM) and the severity of coronary artery disease in Chinese patients who underwent coronary angiography. Methods: A total of 2,045 patients who underwent coronary angiography (CAG) from March 2017 to March 2020 at Beijing Hospital were included in this study. Serum IgM concentration and biochemical indicators were measured before coronary angiography (CAG). The triquartile IgM levels at baseline in the population were analysed. Spearman rank correlation was used to analyse the association between IgM and traditional risk factors for coronary artery disease (CAD). CAD patients were divided into subgroups by affected area, number of affected vessels, and Gensini score to analyse the relationship between IgM and CAD severity. Multivariable logistic regression analysis was used to evaluate the association between IgM and CAD severity. Results: Serum IgM levels were significantly lower in the CAD group (63.5 mg/dL) than in the non-coronary artery disease (NCAD) group (72.3 mg/dL) (P < 0.001). Serum IgM levels were significantly associated with sex. Serum IgM levels were positively correlated with traditional CAD risk factors such as TG, TC and LDL-C (P < 0.05), and negatively associated with the number of obstructed vessels, the number of affected areas, and Gensini scores. After adjusting for age, sex, smoking status, hypertension, dyslipidaemia, diabetes, stroke, and statin use history, a high IgM level was independently negatively associated with the severity of CAD expressed by the Gensini score. Conclusion: We determined that serum IgM was independently negatively associated with the severity of CAD diagnosed by angiography in Chinese adults.

Prognostic value of serum immunoglobulin M levels in patients with acute coronary syndrome.

BACKGROUND AND AIMS: The immuno-inflammatory response is a crucial early step in the development of acute coronary syndrome (ACS). In this study, we investigated whether immunoglobulin M (IgM) in the body's initial immune response can predict the prognosis of patients with ACS. METHODS: This prospective cohort study enrolled 1556 ACS patients at Beijing Hospital between March 2017 and October 2020. All patients underwent coronary angiography (CAG). The serum IgM concentration and biochemical indicators were evaluated prior to CAG. The primary endpoint was the composite endpoint of major adverse cardiovascular and cerebrovascular events (MACCEs). Multivariate Cox proportional hazards models was used to explore the association between IgM levels and the endpoint. RESULTS: The average serum IgM levels of the population was 61.3 (42.6-88.4) mg/dL. During the median follow-up period of 55 months, 150 MACCEs occurred. Kaplan-Meier analysis showed that low serum IgM levels were associated with occurrence of MACCEs (log-rank p = 0.009). Univariate Cox proportional hazards models showed that low serum IgM (≤78.05 mg/dL) was associated with MACCEs (hazard ratio (HR) 1.648, 95 % confidence interval (CI): 1.129-2.406, p = 0.010). In patients with IgM ≤78.05 mg/dL, the HR for partially adjusted MACCEs events was 1.576 (95 % CI: 1.075-2.310) and 1.930 (95 % CI: 1.080-3.449) after adjusting for multiple covariates. The subgroup analysis showed that for patients in ≤24 BMI, never smoking and non-dyslipidemia subgroup, the lower serum IgM levels was significantly associated with the risk of MACCEs (pinteraction < 0.001, pinteraction = 0.037, pinteraction = 0.024, respectively). CONCLUSIONS: Low serum IgM levels was independently associated with MACCEs in ACS patients, especially for patients without obesity, smoking and dyslipidemia.

Helicobacter pylori infection delays neutrophil apoptosis and exacerbates inflammatory response.

Aim: Understanding molecular mechanisms of Helicobacter pylori (H. pylori)-induced inflammation is important for developing new therapeutic strategies for gastrointestinal diseases.Materials & methods: We designed an H. pylori-neutrophil infection model and explored the effects of H. pylori infection on neutrophils.Results: H. pylori infected neutrophils showed a low level of apoptosis. H. pylori stimulation activated the NACHT/LRR/PYD domain-containing protein 3 (NLRP3)-gasdermin-D (GSDMD) pathway for interleukin (IL)-1ß secretion. However, IL-1ß secretion was not completely dependent on GSDMD, as inhibition of autophagy significantly reduced IL-1ß release, and autophagy-related molecules were significantly upregulated in H. pylori-infected neutrophils.Conclusion: Therefore, H. pylori infection inhibits neutrophils apoptosis and induces IL-1ß secretion through autophagy. These findings may be utilized to formulate therapeutic strategies against H. pylori mediated chronic gastritis.

[Box: see text].

Effect of acacetin on inhibition of apoptosis in Helicobacter pylori-infected gastric epithelial cell line.

BACKGROUND: Helicobacter pylori (H. pylori) infection can cause extensive apoptosis of gastric epithelial cells, serving as a critical catalyst in the progression from chronic gastritis, gastrointestinal metaplasia, and atypical gastric hyperplasia to gastric carcinoma. Prompt eradication of H. pylori is paramount for ameliorating the pathophysiological conditions associated with chronic inflammation of the gastric mucosa and the primary prevention of gastric cancer. Acacetin, which has multifaceted pharmacological activities such as anti-cancer, anti-inflammatory, and antioxidative properties, has been extensively investigated across various domains. Nevertheless, the impact and underlying mechanisms of action of acacetin on H. pylori-infected gastric mucosal epithelial cells remain unclear. AIM: To explore the defensive effects of acacetin on apoptosis in H. pylori-infected GES-1 cells and to investigate the underlying mechanisms. METHODS: GES-1 cells were treated with H. pylori and acacetin in vitro. Cell viability was assessed using the CCK-8 assay, cell mortality rate via lactate dehydrogenase assay, alterations in cell migration and healing capacities through the wound healing assay, rates of apoptosis via flow cytometry and TUNEL staining, and expression levels of apoptosis-associated proteins through western blot analysis. RESULTS: H. pylori infection led to decreased GES-1 cell viability, increased cell mortality, suppressed cell migration, increased rate of apoptosis, increased expressions of Bax and cle-caspase3, and decreased Bcl-2 expression. Conversely, acacetin treatment enhanced cell viability, mitigated apoptosis induced by H. pylori infection, and modulated the expression of apoptosis-regulatory proteins by upregulating Bcl-2 and downregulating Bax and cleaved caspase-3. CONCLUSION: Acacetin significantly improved GES-1 cell viability and inhibited apoptosis in H. pylori-infected GES-1 cells, thereby exerting a protective effect on gastric mucosal epithelial cells.

Regulation of interstitial fluid flow in adventitia along vasculature by heartbeat and respiration.

Converging studies showed interstitial fluid (ISF) adjacent to blood vessels flows in adventitia along vasculature into heart and lungs. We aim to reveal circulatory pathways and regulatory mechanism of such adventitial ISF flow in rat model. By MRI, real-time fluorescent imaging, micro-CT, and histological analysis, ISF was found to flow in adventitial matrix surrounded by fascia and along systemic vessels into heart, then flow into lungs via pulmonary arteries and back to heart via pulmonary veins, which was neither perivascular tissues nor blood or lymphatic vessels. Under physiological conditions, speckle-like adventitial ISF flow rate was positively correlated with heart rate, increased when holding breath, became pulsative during heavy breathing. During cardiac or respiratory cycle, each dilation or contraction of heart or lungs can generate to-and-fro adventitial ISF flow along femoral veins. Discovered regulatory mechanisms of adventitial ISF flow along vasculature by heart and lungs will revolutionize understanding of cardiovascular system.

Super-adsorbent microspheres based on a triallyl isocyanurate-maleic anhydride copolymer for the removal of organic pollutants from water.

Owing to the frequent occurrence of diclofenac sodium (DS) in fresh aquatic environments and its potential toxicity towards living organisms, the effective removal of DS has attracted worldwide attention. Herein, a green and efficient strategy to fabricate crosslinked microspheres with interconnected mesoporous structures and abundant adsorption active sites was developed. With this strategy, triallyl isocyanurate (TAIC)-maleic anhydride (MAH) copolymer microspheres (TMs) with a diameter of 1.19-1.35 µm were first prepared by self-stabilized precipitation (2SP) polymerization, and the TMs possess a large amount reactive anhydride groups (62.5-71.8 mol%), a specific surface area of 51.6-182.4 m2 g-1 and a mesoporous structure (average pore size: 3.4-3.8 nm). Then the TMs were further functionalized with polyethylenimine (PEI) to give rise to cationic microspheres (Cat-TMs), which showed excellent adsorption performance to DS with a rapid adsorption rate (reached equilibrium within 30 min), a very high equilibrium adsorption capacity (1421 mg g-1) and excellent recyclability. The pseudo-second-order model and Langmuir model were a good fit for the adsorption kinetic and isotherm process, respectively. Furthermore, due to the high cation density (4.291 mmol g-1) and excellent pH buffer capacity of Cat-TMs, the adsorption capacity can be maintained at a high level within the pH range of 6-10. The regenerated Cat-TMs showed only a slight loss (<5%) in the adsorption capacity even after 5 adsorption-desorption cycles. In short, Cat-TMs can be considered as a highly promising adsorbent for the rapid and ultra-efficient removal of anionic organic contaminants and have significant potential to be applied in wastewater treatment.

Dietary curcumin supplementation ameliorates placental inflammation in rats with intra-uterine growth retardation by inhibiting the NF-κB signaling pathway.

Intra-uterine growth restriction (IUGR) is a serious, commonly occurring reproductive problem in humans. This study aimed to investigate the effects of daily curcumin supplementation during pregnancy on placental inflammation, in a rat model of IUGR. Pregnant rats were divided into three groups based on diet: (1) normal protein (19%) (NP), (2) low protein (8%) (LP), and (3) low protein + 100 mg curcumin/kg bw per day (LPC). The results showed that curcumin accumulation in the serum, placenta and liver. Fetal weight and placental total protein levels were increased in the LPC group compared with those in the LP group. Dietary curcumin supplementation normalized the low protein diet-induced decrease of placental weight, blood sinusoid area, and proliferating cell nuclear antigen (PCNA) protein expression levels. It also reversed the low protein diet-induced increase of serum triglyceride levels and tumor necrosis factor alpha-like (TNF-α), interleukin 1 beta (IL-1ß), and interleukin 6 (IL-6) concentrations in both the placenta and serum. Additionally, it normalized the enhanced gene expression levels of the pro-inflammatory cytokines in the LP group to that in the NP group. Furthermore, it downregulated the inhibitor of kappa Balpha (IκBα) and nuclear factor kappa Balpha (NF-κB) phosphorylation. In conclusion, daily curcumin supplementation ameliorates placental inflammation in rats with IUGR by inhibiting the NF-κB signaling pathway.

[Influence of Land Use and Land Cover Patterns on Water Quality at Different Spatio-temporal Scales in Hehuang Valley].

Based on the measured water quality data of Huangyuan County, Huzhu Tu Autonomous County, and Minhe Hui Tu Autonomous County in Hehuang Valley of Qinghai province in the normal and wet seasons, the effects of land use and land cover patterns on regional seasonal water quality were analyzed using remote sensing technology and mathematical statistics. The results showed that:① the concentrations of total nitrogen and total phosphorus in the surface water of Hehuang Valley were high. Water pollution areas (Class Ⅳ and Ⅴ) were mainly concentrated in the lower reaches of the river and the junction of tributaries. ② The explanation rate of land use to water quality in the normal season was higher than that in the wet season. The optimal scale was the 200 m buffer scale in the normal season, and farmland and towns were the main influencing factors. The optimal scale in the wet season was the 5 km buffer scale, and the main influencing factor was the forest. ③ In the normal season, the proportion of farmland was positively correlated with the concentration of total nitrogen and permanganate index but negatively correlated with the concentration of total phosphorus. The proportion of town area was positively correlated with the water quality index. The proportion of grassland area in the wet season was positively correlated with the permanganate index. The proportion of forestland area was negatively correlated with water quality index in both periods. Farmland, grassland, and town areas were the "source" landscape of pollutants, but farmland also played a role in intercepting pollutants to a certain extent. Forest land was the "sink" landscape of pollutants. ④ The pattern of forestland in the 200 m buffer zone in the normal season had a high explanatory rate for water quality, and the largest patch index (LPI) and patch density (PD) were the main factors. The study showed that it is an important measure to purify the surface water quality of Hehuang Valley by rationally planning the proportion of residential land and cultivated land and improving the coverage rate and aggregation degree of forestland around the riparian zone.