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Objective@#To explore the photodynamic treatment method and therapeutic effect of oral verrucous carcinoma and to provide a reference for the clinic.@*Methods@#This study follows the requirements of medical ethics. This paper summarized the photodynamic treatment of an oral verrucous carcinoma with a diameter of approximately 2.5 cm in the right buccal mucosa and retrospectively analyzed the characteristics and treatment of oral verrucous carcinoma and the photodynamic treatment of potential malignant lesions of the oral mucosa through a review of the literature.@*Results@#After four rounds of photodynamic therapy, the size of the right buccal lesion was significantly reduced. After 6 months of follow-up, the white verrucous hyperplasia of the right buccal mucosa had completely subsided, and there was no obvious scar formation. Three years after treatment, there was no recurrence of the lesion in the right buccal mucosa and no obvious scar formation in the treated area. The degree of mouth opening was 3 fingers, and there was no lymph node enlargement in the bilateral submandibular, submental or neck. The literature review shows that oral verrucous carcinoma is a rare subtype of squamous cell carcinoma with the characteristics and biological behaviors of slow growth, low malignancy, and rare metastasis. Surgery is the preferred treatment, but there are some limitations. Photodynamic therapy is a minimally invasive, repeatable treatment with mild adverse reactions. In recent years, photodynamic therapy has been gradually applied for the treatment of potential malignant disorders of the oral mucosa and early oral squamous cell carcinoma and has achieved positive results, but it has not been reported for the treatment of oral verrucous cancer@*Conclusion@#Photodynamic therapy is a new option for nonsurgical resection of oral verrucous carcinoma.
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ABSTRACT Objective: MCM3AP-AS1 has been characterized as an oncogenic long non-coding RNA (lncRNA) in several cancers including papillary thyroid cancer (PTC), but its role in PTC has not been fully elucidated. Considering the critical role of lncRNAs in cancer biology, further functional analysis of MCM3AP-AS1 in PTC may provide novel insights into PTC management. Subjects and methods: Paired tumor and non-tumor tissues were collected from 63 papillary thyroid carcinoma (PTC) patients. Expression levels of MCM3AP-AS1 , miR-218 and GLUT1 in tissue samples were analyzed by qRT-PCR. Cell transfection was performed to explore the interactions among MCM3AP-AS1 , miR-218 and GLUT1 . Cell proliferation assay was performed to evaluate the effects of MCM3AP-AS1 and miR-218 on cell proliferation. Results: MCM3AP-AS1 accumulated to high levels in PTC tissues and was affected by clinical stage. MCM3AP-AS1 showed a positive correlation with GLUT1 across PTC tissues. RNA interaction prediction showed that MCM3AP-AS1 could bind to miR-218 , which can directly target GLUT1 . MCM3AP-AS1 and miR-218 showed no regulatory role regulating the expression of each other, but overexpression of MCM3AP-AS1 upregulated GLUT1 and enhanced cell proliferation. In contrast, overexpression of miR-218 downregulated GLUT1 and attenuated cell proliferation. In addition, miR-218 suppressed the role of MCM3AP-AS1 in regulating the expression of GLUT1 and cell proliferation. Conclusions: MCM3AP-AS1 may serve as a competing endogenous RNA of miR-218 to upregulate GLUT1 in PTC, thereby promoting cell proliferation. The MCM3AP-AS1/miR-218/GLUT1 pathway characterized in the present study might serve as a potential target to treat PTC.
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Objective To investigate the prevalence and influencing factors of Blastocystis hominis infection among children with diarrhea under five years of age in Guangzhou City. Methods Children with diarrhea under 5 years of age admitted to Guangzhou Children’s hospital, Guangzhou Maternity and Child Healthcare Hospital and Guangzhou Women and Children’s Medical Center during the period between January 1 and December 31, 2020, were enrolled. Participants’ demographics, living environments and health status were collected using questionnaire surveys. Stool samples were collected from participants and nucleic acid was extracted. B. hominis infection was identified using PCR assay and sequence alignment, and the factors affecting B. hominis infection among children with diarrhea under 5 years of age were identified using univariate analysis and multivariate logistic regression analysis. Results A total of 684 children with diarrhea under 5 years of age were enrolled, including 468 male children and 216 female children, with a mean age of (1.79 ± 1.12) years. The overall prevalence of B. hominis infection was 4.97% [34/684, 95% confidential interval (CI): (3.59%, 6.86%)] among participants, and there was no significant difference in the prevalence of B. hominis infection between children with chronic [7.52% (20/266), 95% CI: (4.92%, 11.33%)] and acute diarrhea [3.35% (14/418), 95% CI: (2.01%, 5.54%)] (χ2 = 5.983, P = 0.014). Multivariate logistic regression analysis identified keeping pet [odds ratio (OR) = 6.298, 95% CI: (2.711, 14.633)], drinking non-tap water [OR = 4.522, 95% CI: (1.769, 11.561)], lactose intolerance [OR = 4.221, 95% CI: (1.043, 17.087)], antibiotic use [OR = 0.125, 95% CI: (0.017, 0.944)] and chronic diarrhea [OR = 2.172, 95% CI: (1.018, 4.637)] as factors affecting B. hominis infection among children with diarrhea under 5 years of age in Guangzhou City. Conclusions B. hominis infections is detected in children with diarrhea under five years of age in Guangzhou City. Improving home environments and pet-keeping hygiene is recommended to reduce the likelihood of B. hominis infection among children.
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AIM: To investigate the effects of primary acquired nasolacrimal duct obstruction(PANDO)on the tear film and ocular surface using LipiView ocular surface interferometer and Keratograph 5M anterior segment analyzer.METHODS: A self-controlled clinical trials. A total of 40 patients diagnosed with unilateral PANDO for at least 6mo who were admitted to our department from September 2021 to March 2022 were enrolled in the study, and the healthy eyes of the patients were assessed as control group. The LipiView ocular surface interferometer and Keratograph 5M anterior segment analyzer were used to measure the changes in related parameters of the tear film and ocular surface in both eyes.RESULTS: The non-invasive tear meniscus height(NITMH), stimulated NITMH, loss rate of upper meibomian gland, nasal and temporal ciliary redness index, temporal conjunctival redness index of the affected eyes were higher than healthy eyes(P<0.05), but there were no statistical differences in the non-invasive break-up time(NIBUT), loss rate of lower meibomian gland, nasal conjunctival redness index, dry eye grading, blink responses, partial blink rate and lipid layer thickness(LLT)between the both eyes(P>0.05).CONCLUSION: PANDO may lead to the aggravation of ocular surface inflammation and the loss of upper meibomian gland, and damage the ocular surface of patients. Attention should be paid to the early treatment of PANDO.
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Phosphodiesterase 4 (PDE4) is an important member of the phosphodiesterase enzyme family that specifically catalyzes the hydrolysis of cyclic adenosine monophosphate (cAMP), activates the downstream phosphorylation cascade pathway by altering cAMP concentration, and is strongly associated with multiple diseases. Inhibition of PDE4 is clinically investigated as a therapeutic strategy in a broad range of disease areas, including respiratory system diseases, autoimmune disorders, central nervous system diseases, and dermatological conditions. However, the incidence of adverse reactions such as nausea and vomiting is relatively high in the marketed PDE4 inhibitors, which has stalled their clinical development. In this review, we provide an overview of the clinical progression and safety issues of the marketed PDE4 inhibitors. We also review the main causes underlying PDE4-mediated adverse effects by combining the structural analysis of the PDE4 protein, the mechanism of action of PDE4 inhibitors, and the related side effect mechanism research, aiming to provide a reference for the development of safe and effective PDE4 inhibitors.
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In 2004, it was the first time that Wollensak and Spoerl had applied physical and chemical cross-linking methods to scleral tissue. They found that the biomechanical strength of cross-linked sclera, induced by riboflavin/ultraviolet A, glyceraldehyde and glutaraldehyde, could be improved and proposed that scleral collagen cross-linking is expected to be a new method for the treatment of pathologic myopia. In recent years, a series of explorations have been made on the effectiveness and adverse reactions of physical and chemical cross-linking in the prevention and treatment of pathologic myopia, including the establishment of various animal models and different myopia modeling methods, the improvement of cross-linking methods, the amelioration of the measurement of biomechanical strength of scleral tissue and the attention of biological parameters such as the thickness of retinal nerve fiber layer and the amplitude of electroretinogram in vivo. Genipin-crosslinking of the scleral collagen combined with posterior scleral contraction/reinforcement has been applied to clinical research. This review summarizes physical cross-linking and the genipin-crosslinking of scleral collagen to explore the effectiveness and safety of the methods in the prevention and treatment of the pathologic myopia.
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ABSTRACT BACKGROUND: Primary thyroid tuberculosis (PTT) is an uncommon type of extrapulmonary tuberculosis, which is caused by Mycobacterium tuberculosis. It does not have specific clinical manifestations, and most cases are diagnosed through postoperative histopathological examination. OBJECTIVE: To evaluate the diagnostic pattern and management strategy among patients with primary thyroid tuberculosis. DESIGN AND SETTING: Retrospective study on patients with primary thyroid tuberculosis in the First Hospital of Jilin University (Changchun, China). METHODS: Between March 2015 and June 2020, nine cases of PTT were diagnosed and treated in the Department of Thyroid Surgery of the First Hospital of Jilin University. Age at diagnosis, primary symptoms, preoperative biopsy, operation method, pathological classification, acid-fast staining test, anti-TB therapy and prognosis were registered in order to explore the appropriate protocol for diagnosis and treatment of this disease. RESULTS: None of the patients was diagnosed with thyroid tuberculosis before surgery. All the patients underwent surgery. Granulomatous changes or caseous necrosis in thyroid tissue were found through postoperative histopathological evaluation. Polymerase chain reaction (PCR) results for Mycobacterium tuberculosis were positive in all patients. Most patients had a good prognosis after surgery and anti-tuberculosis drug therapy. CONCLUSION: PTT is a rare disease. It is important to improve the preoperative diagnosis. Preoperative diagnostic accuracy relies on increased awareness of the disease and appropriate use of preoperative diagnostic methods, such as PCR detection, fine-needle aspiration cytology, acid-fast bacillus culture, ultrasound and blood sedimentation. PCR detection of M. tuberculosis is recommended as the gold standard for diagnosis.
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@#Abstract: Objective To screening new compounds that can inhibit the growth and biofilm formation of Staphylococcus aureus. Methods Compounds that can inhibit the growth of Staphylococcus aureus were screened from the FDA approved drug library by 96 well plates. The absorbance value of 600 nm wavelength (OD600) was measured by Microplate Reader to detect the growth of Staphylococcus aureus planktonic cells in the culture supernatant. The minimum inhibitory concentration (MIC) of ozanimod against Staphylococcus aureus clinical isolates were detected by micro broth dilution method. The inhibitory effect of sub-inhibitory concentrations of ozanimod on the biofilm formation of Staphylococcus aureus was detected by crystal violet staining. Results This study found that ozanimod could significantly inhibit the growth of Staphylococcus aureus SA113 (screening reference strain), and the MIC was 25.00 μmol/L. The MIC of ozanimod against 119 clinical isolates of Staphylococcus aureus [65 isolates of methicillin sensitive (MSSA) and 54 isolates of methicillin resistant (MRSA)] was 12.50 or 25.00 μmol/L. The MIC50 and MIC90 of ozanimod against the 119 Staphylococcus aureus isolates all were 25.00 μmol/L. This study found that 6.25, 12.50, 25.00 μmol/L of ozanimod could significantly inhibit the biofilm formation of 2 MSSA and 2 MRSA. The sub-MIC concentration of ozanimod (12.50 μmol/L) could significantly inhibit the biofilm formation of 14 MSSA and 11 MRSA, but had no inhibitory effect on the growth of planktonic cells of these Staphylococcus aureus isolates. Conclusion Ozanimod can inhibit the growth of Staphylococcus aureus, including MRSA, and has good antibacterial activity. The sub-MIC concentration of ozanimod could significantly inhibit the biofilm formation of Staphylococcus aureus.
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Objective: To investigate the effects of exosomes from human adipose-derived mesenchymal stem cells (ADSCs) on inflammatory response of mouse RAW264.7 cells and wound healing of full-thickness skin defects in mice. Methods: The experimental research methods were adopted. The discarded adipose tissue was collected from 3 female patients (aged 10-25 years) who underwent abdominal surgery in the First Affiliated Hospital of Air Force Medical University. ADSCs were extracted from the adipose tissue by collagenase Ⅰ digestion and identified with flow cytometry. Exosomes were extracted from the human ADSCs by differential ultracentrifugation, the morphology of the exosomes was observed by transmission electron microscopy, the particle diameter of the exosomes was detected by nanoparticle tracking analyzer, and the protein expressions of CD9, CD63, tumor susceptibility gene 101 (TSG101), and β-actin were detected by Western blotting. The human ADSCs exosomes (ADSCs-Exos) and RAW264.7 cells were co-cultured for 12 h, and the uptake of RAW264.7 cells for human ADSCs-Exos was observed. The RAW264.7 cells were divided into phosphate buffer solution (PBS) group stimulated with PBS for suitable time, endotoxin/lipopolysaccharide (LPS) stimulation 2 h group, LPS stimulation 4 h group, LPS stimulation 6 h group, LPS stimulation 12 h group, and LPS stimulation 24 h group stimulated with LPS for corresponding time, with 3 wells in each group, and the mRNA expressions of interleukin 1β (IL-1β), tumor necrosis factor α (TNF-α), IL-6, and IL-10 were detected by real-time fluorescence quantitative reverse transcription polymerase chain reaction (RT-PCR) method. The RAW264.7 cells were divided into PBS group, LPS alone group, and LPS+ADSCs-Exos group, with 3 wells in each group, which were dealt correspondingly for the time screened out in the previous experiment, the mRNA expressions of IL-1β, TNF-α, IL-6, IL-10, trasforming growth factor β (TGF-β,) and vascular endothelial growth factor (VEGF) were detected by real time fluorescence quantitative RT-PCR method, and the protein expressions of inducible nitric oxide synthase (iNOS) and arginase 1 (Arg1) were detected by Western blotting. Twenty-four 8-week-old male BALB/c mice were divided into PBS group and ADSCs-Exos group according to the random number table, with 12 mice in each group, and a full-thickness skin defect wound with area of 1 cm×1 cm was inflicted on the back of each mouse. Immediately after injury, the wounds of mice in the two groups were dealt correspondingly. On post injury day (PID) 1, the concentration of IL-1β and TNF-α in serum were detected by enzyme-linked immunosorbent assay, and the mRNA expressions of IL-1β, TNF-α, and IL-6 were detected by real time fluorescence quantitative RT-PCR method. On PID 3, 6, 9, 12, and 15, the wound healing was observed and the wound non-healing rate was calculated. On PID 15, the defect length of skin accessory and collagen volume fraction (CVF) were detected by hematoxylin eosin staining and Masson staining, respectively, the CD31 expression and neovascularization were detected by immunohistochemistry, and the ratio of Ki67 positive cells, the ratio of iNOS and Arg1 double positive cells, and the ratio of iNOS positive cells to Arg1 positive cells and their fluorescence intensities were detected by immunofluorescence method. The number of samples in animal experiments was 6. Data were statistically analyzed with analysis of variance for repeated measurement, one-way analysis of variance, and independent sample t test. Results: At 12 h of culture, the cells exhibited a typical spindle shape, which were verified as ADSCs with flow cytometry. The exosomes with a vesicular structure and particle diameters of 29-178 nm, were positively expressed CD9, CD63, and TSG101 and negatively expressed β-actin. After 12 h of co-culture, the human ADSCs-Exos were endocytosed into the cytoplasm by RAW264.7 cells. The mRNA expressions of IL-1β, TNF-α, IL-6, and IL-10 of RAW264.7 cells in LPS stimulation 2 h group, LPS stimulation 4 h group, LPS stimulation 6 h group, LPS stimulation 12 h group, and LPS stimulation 24 h group were significantly higher than those in PBS group (with t) values of 39.10, 14.55, 28.80, 4.74, 48.80, 22.97, 13.25, 36.34, 23.12, 18.71, 29.19, 41.08, 11.68, 18.06, 8.54, 43.45, 62.31, 22.52, 21.51, and 37.13, respectively, P<0.01). The stimulation 12 h with significant expressions of all the inflammatory factors was selected as the time point in the following experiment. After stimulation of 12 h, the mRNA expressions of IL-1β, TNF-α, IL-6, and IL-10 of RAW264.7 cells in LPS alone group were significantly higher than those in PBS group (with t values of 44.20, 51.26, 14.71, and 8.54, respectively, P<0.01); the mRNA expressions of IL-1β, TNF-α, and IL-6 of RAW264.7 cells in LPS+ADSCs-Exos group were significantly lower than those in LPS alone group (with t values of 22.89, 25.51, and 8.03, respectively, P<0.01), while the mRNA expressions of IL-10, TGF-β, and VEGF were significantly higher than those in LPS alone group (with t values of 9.89, 13.12, and 7.14, respectively, P<0.01). After stimulation of 12 h, the protein expression of iNOS of RAW264.7 cells in LPS alone group was significantly higher than that in PBS group and LPS+ADSCs-Exos group, respectively (with t values of 11.20 and 5.06, respectively, P<0.05 or P<0.01), and the protein expression of Arg1 was significantly lower than that in LPS+ADSCs-Exos group (t=15.01, P<0.01). On PID 1, the serum concentrations of IL-1β and TNF-α and the mRNA expressions of IL-1β, TNF-α, and IL-6 in wound tissue of mice in ADSCs-Exos group were significantly those in lower than PBS group (with t values of 15.44, 12.24, 9.24, 7.12, and 10.62, respectively, P<0.01). On PID 3, 6, 9, 12, and 15 d, the wound non-healing rates of mice in ADSCs-Exos group were (73.2±4.1)%, (53.8±3.8)%, (42.1±5.1)%, (24.1±2.8)%, and 0, which were significantly lower than (82.5±3.8)%, (71.2±4.6)%, (52.9±4.1)%, (41.5±3.6)%, and (14.8±2.5)% in PBS group, respectively (with t values of 4.77, 8.93, 5.54, 7.63, and 7.59, respectively, P<0.01). On PID 15, the defect length of skin accessory in wounds of mice in PBS group was significantly longer than that in ADSCs-Exos group (t=9.50, P<0.01), and the CVF was significantly lower than that in ADSCs-Exos group (t=9.15, P<0.01). On PID 15, the CD31 expression and the number of new blood vessels (t=12.99, P<0.01), in wound tissue of mice in ADSCs-Exos group were significantly more than those in PBS group, and the ratio of Ki67 positive cells was significantly higher than that in PBS group (t=7.52, P<0.01). On PID 15, the ratio of iNOS and Arg1 double positive cells in wound tissue of mice in PBS group was (12.33±1.97)%, which was significantly higher than (1.78±0.29)% in ADSCs-Exos group (t=13.04, P<0.01), the ratio of iNOS positive cells and the fluorescence intensity of iNOS were obviously higher than those of ADSCs-Exos group, and the ratio of Arg1 positive cells and the fluorescence intensity of Arg1 were obviously lower than those of ADSCs-Exos group. Conclusions: The human ADSCs-Exos can alleviate inflammatory response of mouse RAW264.7 cells, decrease macrophage infiltration and secretion of the pro-inflammatory cytokines, increase the secretion of anti-inflammatory cytokines to promote neovascularization and cell proliferation in full-thickness skin defect wounds of mice, hence accelerating wound healing.
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Animals , Female , Humans , Male , Mice , Exosomes , Mesenchymal Stem Cells , Skin , Vascular Endothelial Growth Factor A , Wound HealingABSTRACT
@#[摘 要] 目的：探讨胶质母细胞瘤（GBM）患者肿瘤组织来源的GBM类器官（GBO）模型的制备方法。方法：选取2021年广东三九脑科医院新诊断经病理确诊的8例GBM患者的新鲜肿瘤组织标本，将其剪成0.5~1 mm大小的组织碎片并用特制的培养基进行培养，待其成球且直径达到1 mm时剪小传代，同时选取培养2周以上的GBO进行石蜡包埋、切片，后进行H-E染色和免疫组化染色检测，并与亲本GBM组织进行组织学与细胞学的比较。结果：成功培养2例可传代冻存的GBO，并建立GBO生物库。H-E染色结果显示，GBO保留了与亲本GBM组织相似的组织结构和细胞形态；免疫组化实验结果显示，GBO与GBM组织中GFAP、OLIG2、Ki67和ATRX分子的表达情况一致。结论：将患者来源的GBM组织在体外剪小并用特制培养基培养，可构建与GBM患者肿瘤组织在组织和细胞层面一致的GBO。
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Esophageal cancer is a digestive tract malignancy with high morbidity and mortality and mainly occurs in males. The 5-year survival rate is lower than 20%. In China， the morbidity and mortality of esophageal cancer rank the first in the world， seriously threatening national health. The pathogenesis of esophageal cancer is diverse， which is generally considered as the consequence of environmental-genetic-gene interaction. In addition to genetic factors and regional characteristics， gene mutation， RNA interference， DNA damage repair， tumor microenvironment， dietary habit， chronic adverse stimulation， and inflammatory reaction are all involved in the occurrence and development of esophageal cancer. However， there is no unified and accurate conclusion. Clarifying the exact pathogenesis of esophageal cancer is of great significance for its early screening， diagnosis， prevention， treatment， and prognosis. Surgery， radiotherapy， and chemotherapy are the three effective methods for the treatment of esophageal cancer. However， due to the atypical early symptoms， most patients have missed the best operation period when diagnosed， resulting in poor clinical prognosis. Moreover， radiotherapy and chemotherapy will cause side effects such as loss of appetite， low immune function， esophagitis， pneumonia， and malnutrition， which is not conducive to the prognosis and treatment maintenance of patients. With definite efficacies on esophageal cancer， traditional Chinese medicine （TCM）， which is flexible and diverse in the treatment， can primarily or alternatively be involved in the treatment of esophageal cancer. TCM can eliminate postoperative complications and postoperative infections and relieve adverse gastrointestinal reactions， weakened immune function， and organ damage caused by radiotherapy and chemotherapy. It can enhance clinical efficacy and improve the quality of life of patients. Therefore， it is necessary to systematically summarize the clear pathogenesis or risk factors of esophageal cancer and review the clinical characteristics of TCM in the prevention and treatment of esophageal cancer to facilitate the early screening， diagnosis， and treatment of esophageal cancer and promote the application of TCM in the prevention and treatment of esophageal cancer and related adverse reactions.
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ObjectiveTo investigate effect of aqueous extract of Trametes robiniophila （TRM，Huaier） on autophagy of human prostate cancer VCaP cells and Lamin B1 expression， so as to uncover its role in the proliferation of VCaP cells. MethodThe inhibitory effect of 0， 2， 4， 6， 8， 10 g·L-1 TRM aqueous extract on the proliferation of human prostate cancer VCaP cells at different time points were determined by cell counting kit-8 （CCK-8） assay. Acridine orange staining was conducted for analyzing the effect of TRM aqueous extract on the formation of autolysosomes in VCaP cells. After medication， the expression of microtubule-associated protein Ⅰ light chain 3 （LC3）， autophagy-related protein 3 （Atg3）， autophagy-related protein 5 （Atg5）， and autophagy-related protein 7 （Atg7） in VCaP cells were detected by Western blot. The effect of TRM aqueous extract alone and its combination with autophagy inhibitor bafilomycin A1 on the proliferation of VCaP cells were assayed by CCK-8 assay. RNA interference technology was used to explore the role of Lamin B1 in anti-proliferation of VCaP cells by TRM. ResultCompared with the blank group， TRM aqueous extract inhibited the proliferation of human prostate cancer VCaP cells in a time- and concentration-dependent manner （P<0.01）. Acridine orange staining showed that TRM aqueous extract promoted the formation of autolysosomes in VCaP cells. As revealed by Western blotting， TRM aqueous extract up-regulated the expression levels of LC3-Ⅱ， Atg3， Atg5， and Atg7 in contrast to those in the blank group （P<0.05）. All these indicated that TRM aqueous extract induced the autophagy of VCaP cells. In addition， autophagy inhibition impaired the sensitivity of VCaP cells to TRM aqueous extract （P<0.05）. The comparison with the blank group showed that TRM aqueous extract inhibited Lamin B1 protein expression in VCaP cells （P<0.01）， which in turns weakened the sensitivity of VCaP cells to TRM aqueous extract. ConclusionTRM aqueous extract inhibited the proliferation of human prostate cancer VCaP cells possibly by inducing autography and down-regulating Lamin B1 expression. This study has provided a theoretical basis for the clinical application of TRM.
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AIM:A total of 1 084 preschool children in 4 kindergartens in Xining City were surveyed on their visual acuity and refraction status to find out abnormal vision and refraction beyond the normal range. METHODS: A cross-sectional survey study. The overall sampling method was used on October 2019, a total of 1 084 preschool children aged 3-6 years were selected from a kindergarten in the east, west, south and north of Xining City. The children were checked for uncorrected distance vision and refractive status was checked by using a refractive screener.RESULTS: The detection rate of abnormal vision in preschool children in Xining City was 12.21%, and the detection rate of abnormal vision increased with the increasing age(χ2lineartrend=94.40, P<0.05), and there were differences among different age groups(χ2=293.55, P<0.05). Refractive abnormalities accounted for 6.09% of the total number of examinations. With the increasing age, the proportion of compound hyperopic astigmatism decreased(χ2lineartrend=1.79, P>0.05).CONCLUSION: The abnormal visual acuity of preschool children in Xining City gradually increases with the increasing age; The refractive state is dominated by astigmatism, among which the proportion of mixed astigmatism and pure myopia astigmatism is the highest, followed by pure hyperopic astigmatism and compound hyperopic astigmatism; With the increase of age, the diopter of compound hyperopic astigmatism gradually decreases, which is in line with the law of children's eye refractive development.
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Endoplasmic reticulum （ER） is an important organelle responsible for protein， steroid， lipid and carbohydrate synthesis and calcium-dependent signal transduction in eukaryotic cells. ER homeostasis is essential for normal cell function. ER homeostasis imbalance can induce ER stress （ERS）， which participates in the occurrence and development of diseases of the digestive system， respiratory system， circulatory system， nervous system， reproductive system， and endocrine system， and affects body health. Among various diseases， cancers seriously endanger people′s health due to its high mortality rate， disability rate， and recurrence rate. Due to the survival characteristics of unlimited proliferation， tumor cells are often exposed to various internal and external stimuli such as hypoxia， ischemia， excessive proliferation， and starvation， which destroy intracellular protein balance and induce ERS to some extent for survival. ERS plays a major role in various tumors and has dual functions in the survival of tumor cells： promoting the survival of tumor cells by activating a series of adaptive responses， while inducing ERS-related apoptosis pathways， so as to promote tumor cell death and inhibit tumor growth and invasion. As multiple functions of ERS in tumors are reported， many scholars have tried to intervene in the progress of tumors from the perspective of ERS. The therapeutic effect of traditional Chinese medicine （TCM） on tumors has been widely recognized. TCM can participate in the regulation of tumors from many aspects， including ERS， chemoradiotherapy resistance， gastrointestinal adverse reactions caused by chemotherapy， postoperative recurrence and metastasis. Since there are few reports on the antitumor effect of TCM from the perspective of ERS， this paper expounds the influence of ERS on tumorigenesis and development and the progress of TCM intervention in tumor through ERS， in order to provide a new direction for tumor treatment.
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During the high-temperature and rainy season from June to October in 2017-2019,serious southern blight broke out in the Cynanchum stauntonii planting area in Tuanfeng county,Hubei province,which had a great impact on the yield and quality of medicinal materials. In this study,the pathogen of C. stauntonii was isolated,purified,and identified,and the pathogenicity was tested according to Koch's postulates. Meanwhile,the biological characteristics of the pathogen were analyzed. On this basis,the effective fungicides were screened in laboratory. Finally,the pathogen( BQ-1) was identified as Athelia rolfsii( Deuteromycotina,Basidiomycota,anamorph: Sclerotium rolfsii). The optimum growth conditions for BQ-1 were 25-30 ℃,p H 5-8,and alternating light and dark.The effective chemical fungicides were lime-sulphur-synthelic-solution( LSSS) and flusilazole,and the effective botanical fungicide was osthole. BQ-1 was highly homologous to the pathogen HS-1 of peanut southern blight,with the similarity of 18 S r DNA and TEF sequences at 99. 09%. The southern blight in C. stauntonii might be resulted from that in peanut. In the production of C. stauntonii,the following measures should be taken: avoiding rotation or neighboring with peanut,draining water from June to October to reduce humidity,and reasonably applying fungicides.
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Basidiomycota , Cynanchum , Fungicides, Industrial/pharmacology , HumidityABSTRACT
Objective:To evaluate the efficacy of Paishi decoction in ureteral calculi treatment. Methods:Ureteral calculi patients were voluntarily divided into two groups in Shanghai Baoshan Traditional Chinese Medicine-Integrated Hospital. Patients in the control group received anti-inflammatory symptomatic treatment for 2 weeks， and patients in the treatment group received anti-inflammatory symptomatic treatment combined with Paishi decoction for 2 weeks. Results:There was no significant difference between the two groups in gender， age， body weight and stone size. Compared with the control group， after taking Paishi decoction for 2 weeks， the urinary oxalic acid and calcium in the treatment group decreased significantly， and the urine citric acid increased （P<0.05）. The difference in clinical effective rate was significant between the two groups （P<0.05）. Conclusion:Paishi decoction is superior to single anti-inflammatory symptomatic treatment in the treatment of ureteral calculi， which reflects the advantages of integrated traditional Chinese and Western medicine. However， the number of patients included in this study was limited， further studies are in need to verify the result.
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Objective To create a model based on meteorological data to predict the regions at risk of schistosomiasis during the flood season, so as to provide insights into the surveillance and forecast of schistosomiasis. Methods An interactive schistosomiasis forecast system was created using the open-access R software. The schistosomiasis risk index was used as a basic parameter, and the species distribution model of Oncomelania hupensis snails was generated according to the cumulative rainfall and temperature to predict the probability of O. hupensis snail distribution, so as to identify the regions at risk of schistosomiasis transmission during the flood season. Results The framework of the web page was built using the Shiny package in the R program, and an interactive and visualization system was successfully created to predict the distribution of O. hupensis snails, containing O. hupensis snail surveillance site database, meteorological and environmental data. In this system, the snail distribution area may be displayed and the regions at risk of schistosomiasis transmission may be predicted using the species distribution model. This predictive system may rapidly generate the schistosomiasis transmission risk map, which is simple and easy to perform. In addition, the regions at risk of schistosomiasis transmission were predicted to be concentrated in the middle and lower reaches of the Yangtze River during the flood period. Conclusions A schistosomiasis forecast system is successfully created, which is accurate and rapid to utilize meteorological data to predict the regions at risk of schistosomiasis transmission during the flood period.
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In China, the current effective special standards on radiological protection for non-uranium mines include GBZ 139-2019 Radiological Protection Requirements for the Production Places of Rare Earths, GBZ/T 233-2010 Radiological Protection Standards for the Workplaces of Tin Mine, and GBZ/T 256-2014 Radiological Protection Requirements for Radon Exposure in the Non-Uranium Mining. The above-mentioned special standards are applicable to all types of non-uranium mines except coal mines, and basically cover all aspects related to the practice of occupational exposure protection principles, such as responsibilities, workplace protection requirements, occupational exposure dose control, protective facilities and equipment, occupational exposure monitoring and evaluation, occupational health surveillance, and personnel training et al. However, there are differences in aspects such as workplace classification, individual dose monitoring and occupational health surveillance. According to the requirements of Chinese basic safety standard GB 18871-2002 Basic Standards for Protection Against Ionizing Radiation and for the Safety of Radiation Sources and international standards on occupational exposure protection, the hierarchical management in the workplace, occupational health management and radiological protection training of miners should be further improved, to provide suggestions and references for the formulation and revision of relevant standards for the prevention and control of occupational radiological diseases of non-uranium mine employees in China.
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Multi-factor research design is widely applied in scientific research. It can simultaneously explore the effects of multiple factors on outcome indicators. The consideration of the interactive effects of different factors is a critical issue when analyzing this type of data. The analytic strategy for main effects or simple effects depends on the significance of the interactive effect. However, many researchers tend to skip the analysis on interactive effects, or wrongly select statistical analysis method because of ignoring the test result. In this study, SPSS 20.0 and R 3.6.1 statistical software were used to simulate and illustrate how to analyze data from two most popular multi-factor design data——factorial design and repeated measurement design. The significance of evaluating interactive effect and corresponding key point analysis was explained. The possible consequences of ignoring the statistical significance of interactive effects were indicated, that include leading to low inspection efficiency, prone to draw wrong conclusions, loss of valuable information in the original data, or loss of practical significance of the analytic results. It is suggested that in the analysis of research data, we should first judge whether there are interactive effects, and then correctly choose main effect analysis or single effect analysis to avoid one-sided and wrong conclusions.
ABSTRACT
ABSTRACT Purpose: To investigate the protective effect of parecoxib against lung ischemia-reperfusion injury (LIRI) in rats and the mechanism. Methods: Thirty rats were divided into sham-operated, LIRI and LIRI+parecoxib groups. LIRI model (ischemia for 60 min, followed by reperfusion for 120 min) was constructed in LIRI and LIRI+parecoxib groups. In LIRI+parecoxib group, 10 mg/kg parecoxib was given via femoral vein 15 min before ischemia beginning. At the end of the reperfusion, blood gas analysis, lung wet to dry mass ratio measurement, lung tissue biochemical determination and heme oxygenase-1 (HO-1) protein expression determination were performed. Results: Compared with LIRI group, in LIRI+parecoxib group the oxygenation index was significantly increased, the alveolar-arterial oxygen partial pressure difference was significantly decreased, the lung wet to dry mass ratio was significantly decreased, the lung tissue malondialdehyde content was significantly decreased, the lung tissue superoxide dismutase and myeloperoxidase activities were significantly increased, the lung tissue tumor necrosis factor α and interleukin 1β levels were significantly decreased, and the lung tissue HO-1 protein expression level was significantly increased (all P < 0.05). Conclusions: Parecoxib pretreatment can mitigate the LIRI in rats by reducing oxidative stress, inhibiting inflammatory response and up-regulating HO-1 expression in lung tissue.