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This study employed the α-glucosidase inhibitory activity model as an anti-diabetic assay and implemented a bioactivity-guided isolation strategy to identify novel natural compounds with potential therapeutic properties. Hypericum sampsoniiwas investigated, leading to the isolation of two highly modified seco-polycyclic polyprenylated acylphloroglucinols (PPAPs) (1 and 2), eight phenolic derivatives (3-10), and four terpene derivatives (11-14). The structures of compounds 1 and 2, featuring an unprecedented octahydro-2H-chromen-2-one ring system, were fully characterized using extensive spectroscopic data and quantum chemistry calculations. Six compounds (1, 5-7, 9, and 14) exhibited potential inhibitory effects against α-glucosidase, with IC50 values ranging from 0.050 ± 0.0016 to 366.70 ± 11.08 μg·mL-1. Notably, compound 5 (0.050 ± 0.0016 μg·mL-1) was identified as the most potential α-glucosidase inhibitor, with an inhibitory effect about 6900 times stronger than the positive control, acarbose (IC50 = 346.63 ± 15.65 μg·mL-1). A docking study was conducted to predict molecular interactions between two compounds (1 and 5) and α-glucosidase, and the hypothetical biosynthetic pathways of the two unprecedented seco-PPAPs were proposed.
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Structure moléculaire , Hypericum/composition chimique , alpha-Glucosidase , Spectroscopie par résonance magnétique , Inhibiteurs des glycoside hydrolases/pharmacologieRésumé
Sarcopenia,osteoporosis and osteosarcoporosis,which belong to the same category of musculoskeletal unit disease,seriously impair the homeostasis of the musculoskeletal system in the aging process of the human body.In recent years,researchers have applied various emerging technologies to conduct multi-disciplinary,multi-level and multi-dimensional research on musculoskeletal decay disease,and have come to realized that the disease involves complex biochemical and mechanical crosstalk,and the intestinal microecology has also aroused great interest in this crosstalk because of its profound impact on musculoskeletal health.In view of this,this paper takes the close relationship between intestinal microecology and musculoskeletal decay disease as the starting point,and under the guidance of the overall concept,we deeply analyzes the mechanism and regulatory information behind this relationship,and on this basis,we excavates the potential therapeutic targets for musculoskeletal decay disease,so that we can provide new ideas and strategies for the management of the disease in the context of the musculoskeletal subunit.
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Objective:To investigate the therapeutic potential of therapeutic plasma exchange (TPE) combined with continuous venovenous hemofiltration (CVVH) in the treatment of children with severe sepsis and multiple organ dysfunction syndrome (MODS).Methods:It was a prospective randomized controlled study (RCT) involving 70 children with severe sepsis and MODS admitted to Anyang Maternal and Child Health Hospital from February 2019 to February 2023.According to random number table method, they were randomly divided into combination group (35 cases) and CVVH group (35 cases). Patients in the CVVH group were treated with CVVH alone, and those in the combination group were treated with TPE combined with CVVH.The antibiotic use time of the two groups was recorded and compared by the t test.The prothrombin time (PT), thrombin time (TT), partial prothrombin time (APTT), fibrinogen (FIB), and serum levels of interleukin (IL)-1β, IL-6, tumor necrosis factor-α (TNF-α), high mobility group protein B1 (HMGB1), Toll-like receptor 4 (TLR4) and soluble receptor (sFLT) levels before treatment and 48 h and 72 h after treatment were compared by the repeated measurement ANOVA for the overall comparison at multiple time points, and LSD- t test for pair-wise comparison.The 28-day survival of the two groups was recorded and compared by the Chi- square test. Results:The PT, TT and APTT at 48 h and 72 h after treatment were significantly lower in the combination group than those of CVVH group (all P<0.05). The FIB at 48 h[(2.15±0.42) g/L vs.(1.84±0.31) g/L]and 72 h after treatment [(2.89±0.27) g/L vs.(2.49±0.20) g/L]were significantly higher in the combination group than those of CVVH group (all P<0.05). The duration of antibiotic use in the combination group was significantly shorter than that of CVVH group [(11.33±1.16) d vs.(13.54±1.92) d, t=5.828, P<0.05]. Serum levels of IL-1β, IL-6 and TNF-α at 48 h and 72 h were significantly lower in the combination group than those of CVVH group (all P<0.05). Serum levels of HMGB1, TLR4 and sFLT at 48 h and 72 h were significantly lower in the combination group than those of CVVH group (all P<0.05). The 28-day survival of the combination group was significantly higher than that of CVVH group (94.29% vs.77.14%, χ2=4.200, P=0.040). Conclusions:TPE combined with CVVH can improve the coagulation function and inflammatory factor levels in children with severe sepsis and MODS, which may achieve therapeutic objectives by regulating the levels of HMGB1, TLR4 and sFLT, and improve the short-term prognosis.
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Medical molecular genetics has the complex content and rapidly renewed information, and is difficult to learn and to teach. Therefore, this study explores and summarizes the teaching methods of medical molecular genetics in the postgraduate courses of clinical medicine and in the teaching of interns: paying attention to both basic theory and discipline integration; introducing clinical cases to stimulate the active learning; encouraging online reading to obtain the renewed knowledge; and enlightening the creative thinking through the combination of teaching and research. The results showed that students have more interest and enthusiasm in learning and can think more independently and innovatively. The basic theory and clinical application of molecular genetics have been also analyzed. The questionnaire showed that the teaching satisfaction reaches 97% (152/157).
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@#Objective - To establish a new non exposed intratracheal instillation method for establishing a rat silicosis model. Methods , The specific pathogen free SD rats were randomly divided into control group and experimental group with ten rats in , each group. Rats in the control group were given 1.0 mL of 0.9% sodium chloride solution and rats in the experimental group - were given 1.0 mL of silica suspension with a mass concentration of 50 g/L adopting to the one time intratracheal instillation , - , method and then followed by ventilator assisted ventilation immediately. When the tidal volume stabilized at 2.0 mL the ventilator was removed and the tracheal intubation was pulled out. Five rats in each group were sacrificed after two and four , - Results weeks after modeling and hematoxylin eosin staining and Masson staining of lung tissue were performed. There was , , no death in the two groups of rats during the experiment. After two and four weeks the control group had normal lung structure , , , normal alveolar cavity size no inflammatory cell infiltration thin alveolar wall only a small amount of collagen distribution , around the lung interstitium and bronchus. At the second week of modeling the alveolar wall of the rats in the experimental , , , group was slightly thickened interstitial lymphocytes and macrophages were infiltrated slight hyperplasia was found and a , small amount of fibroblasts were visible. At the 4th week of modeling the alveolar wall of the rats in the experimental group was , , , , significantly thickened fibrous nodules were formed and fibroblasts fibrocytes collagen fibers were significantly increased. Conclusion - The combination of ventilator and non exposed intratracheal instillation method can be used to successfully , , . establish a rat silicosis model which is simple safe and effective
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Spinal infection is a serious health-threatening clinical condition, which more frequently occurs in solid organ transplantation receipients than in non transplant receipients. With the increase of solid organ transplantation, the incidence of secondary spinal infection has been increased in recent years. The symptoms and signs of secondary spinal infection are not obvious, and early diagnosis and treatment are difficult, leading to recurrent attacks and protracted disease courses. This article reviews the progress in the diagnosis and treatment of secondary spinal infection after solid organ transplantation.
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Two Diaporthe species isolated from fruit of Citrus sinensis in China were characterized based on morphology and multilocus phylogeny of ITS, tef1, and tub2 gene sequences. The phylogeny indicated that the two species match Diaporthe taoicola and D. siamensis. A critical examination of phenotypic characteristics confirmed the phylogenetic results. Diaporthe taoicola was morphologically characterized by producing Alpha conidia with tapering toward both ends. Meanwhile, D. siamensis produced cylindrical or ellipsoidal Alpha conidia with two oil drops. Pathogenicity tests revealed that both species were pathogenic to fruit of C. sinensis. To our knowledge, the two species were firstly reported on Citrus sinensis in China.
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Objective:To observe the effects of Scutellariae Radix-Hedyotidis Herba on the proliferation of human lung adenocarcinoma A549 cells and the expression of interleukin-6(IL-6), phosphatidylinositol 3-kinase (PI3K),protein kinase B (Akt), p-protein kinase B (p-Akt), mechanistic target of rapamycin (mTOR), hypoxia-inducible factor-1<italic>α </italic>(HIF-1<italic>α</italic>), and Cyclin D<sub>1</sub> at the cellular level, and to explore their molecular mechanism. Method:Following the set-up of the blank group (complete medium), low-, moderate-,and high-dose (20, 40, and 60 mg·L<sup>-1</sup>) Scutellariae Radix-Hedyotidis Herba groups, and low-, moderate-, and high-dose (5, 10, and 20 mg·L<sup>-1</sup>) cisplatin groups, the cell were treated with the corresponding drugs for 24, 48, and 72 h for detecting their viability by tetrazolium bromide (MTT) colorimetry. A549 cells were then divided into the blank group, Scutellariae Radix-Hedyotidis Herba group, cisplatin group, and combined medication group and intervened with the<sup> </sup>complete medium, 40 mg·L<sup>-1 </sup>Scutellariae Radix-Hedyotidis Herba, 10 mg·L<sup>-1</sup> cisplatin, and 40 mg·L<sup>-1 </sup>Scutellariae Radix-Hedyotidis Herba + 10 mg·L<sup>-1 </sup>cisplatin, respectively, for 24, 48 and 72 h, followed by the measurement of inhibitory effects against the proliferation of A549 cells in each experimental group. The level of IL-6 in cell culture supernatant was determined by enzyme-linked immunosorbent assay (ELISA) after 72 h. The mRNA expression levels of HIF-1<italic>α</italic> and Cyclin D<sub>1</sub> in each group were assayed by real-time polymerase chain reaction (Real-time PCR), and the protein expression levels of PI3K, Akt, p-Akt, mTOR, HIF-1<italic>α</italic>, and Cyclin D<sub>1</sub> by Western blot. Result:After 24 h intervention, Scutellariae Radix-Hedyotidis Herba did not significantly inhibit the proliferation of A549 cells. However, 48 h later, the inhibitory effect in Scutellariae Radix-Hedyotidis Herba groups were significantly enhanced in comparison with that in the blank group (<italic>P</italic><0.05), exhibiting a time-dependent response. After 72 h of action, no significant change was present in the inhibitory effect of each Scutellariae Radix-Hedyotidis Herba group, so the optimal concentration of Scutellariae Radix-Hedyotidis Herba was set at 40 mg·L<sup>-1</sup> for follow-up experiments. As demonstrated by the comparison with the blank group, cisplatin at each concentration inhibited the cell proliferation in a time-dependent manner (<italic>P<</italic>0.05). Considering the cell survival rate, the best concentration of cisplatin was set at 10 mg·L<sup>-1</sup>. Compared with the blank group, Scutellariae Radix-Hedyotidis Herba combined with cisplatin remarkably inhibited the proliferation of A549 cells in a time-dependent manner (<italic>P<</italic>0.05), and the differences between the combined medication group and the other two groups became more significant after 72 h of medication (<italic>P<</italic>0.01). The IL-6 level in each experimental group, especially in the combined medication group, significantly declined in contrast to that in the blank group (<italic>P<</italic>0.01). The mRNA expression levels of HIF-1<italic>α</italic> and Cyclin D<sub>1</sub> in all experimental groups were obviously lower than those in the blank group, with the most significant changes observed in the combined medication group (<italic>P</italic><0.05,<italic>P</italic><0.01). The protein expression levels of PI3K, p-Akt, mTOR, HIF-1<italic>α</italic>, and Cyclin D<sub>1</sub> in each experimental group was significantly down-regulated(<italic>P</italic><0.05,<italic>P</italic><0.01), and the levels in the combined medication group were even lower than those in the cisplatin group (<italic>P<</italic>0.01). Conclusion:Scutellariae Radix-Hedyotidis Herba has an inhibitory effect on the proliferation of A549 cells, which may be related to its inhibition against the expression and secretion of IL-6/PI3K/Akt/mTOR-HIF-1<italic>α</italic> axis.
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Objective:To evaluate the scientificity and feasibility of processing of Pinelliae Rhizoma by hot water washing (Tangxi), and to provide reference for the development of related famous classical formulas. Method:Processing method of Pinelliae Rhizoma washed by hot water was established based on ancient Tangxi processing method, and the process conditions were optimized by single factor tests. The weight, moisture, ash, extract, total acid (calculated by succinic acid) contents and high performance liquid chromatography (HPLC) fingerprint of Pinelliae Rhizoma were compared before and after processing. In addition, the rabbit eye irritation test was conducted to evaluate the toxicity changes. Result:The processing method of Pinelliae Rhizoma washed by hot water was as following:washed by 4 times the amount of hot water at 80 ℃ for 10 times until clear water, transfused cross-section after incision, no or slight numbness in the mouth. The average moisture, ash, extract contents of Pinelliae Rhizoma washed by hot water were 9.34%, 1.71% and 4.22%, respectively. After being processed, the decline rates of weight and total acid content of Pinelliae Rhizoma were 7.49% and 43.31%. The HPLC fingerprint of Pinelliae Rhizoma before and after washing showed a decrease in all components, but there was no new chromatographic peak, and peak 9 (adenosine) reduced significantly. The results of rabbit eye irritation test showed that there was no obvious eye conjunctival irritation after washing, indicating that the toxicity of Pinelliae Rhizoma decreased obviously after washing. Conclusion:The established method of Pinelliae Rhizoma by Tangxi processing is stable and feasible, the aqueous extract of Pinelliae Rhizoma has no obvious eye conjunctival irritation after washing.
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Two Diaporthe species isolated from fruit of Citrus sinensis in China were characterized based on morphology and multilocus phylogeny of ITS, tef1, and tub2 gene sequences. The phylogeny indicated that the two species match Diaporthe taoicola and D. siamensis. A critical examination of phenotypic characteristics confirmed the phylogenetic results. Diaporthe taoicola was morphologically characterized by producing Alpha conidia with tapering toward both ends. Meanwhile, D. siamensis produced cylindrical or ellipsoidal Alpha conidia with two oil drops. Pathogenicity tests revealed that both species were pathogenic to fruit of C. sinensis. To our knowledge, the two species were firstly reported on Citrus sinensis in China.
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In this study, three new germacranolide sesquiterpenes (1-3), together with six related known analogues (4-9) were isolated from the whole plant of Carpesium cernuum. Their structures were established by a combination of extensive NMR spectroscopic analysis, HR-ESIMS data, and ECD calculations. The anti-leukemia activities of all compounds towards three cell lines (HEL, KG-1a, and K562) were evaluated in vitro. Compounds 1-3 exhibited moderate cytotoxicity with IC
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Humains , Antinéoplasiques d'origine végétale/pharmacologie , Asteraceae/composition chimique , Tests de criblage d'agents antitumoraux , Cellules K562 , Composés phytochimiques/pharmacologie , Sesquiterpènes de type germacrane/pharmacologieRésumé
OBJECTIVE@#To explore the effect of electro-acupuncture (EA) on glucose and lipid metabolism in unmarried patients with polycystic ovary syndrome (PCOS).@*METHODS@#Fifty-four PCOS patients were equally randomized into true acupuncture group and sham acupuncture group (control) for totally 16 weeks of treatment by random method with a computerized randomization program. Patients in true acupuncture group accepted traditional acupuncture methods with EA and two sets of acupoint groups were used alternatively. The first set consisted of Zhongji (CV 3), Qihai (CV 6), Guilai (ST 29), Sanyinjiao (SP 6), Yinlingquan (SP 9), Hegu (LI4) and Baihui (GV 20), and the second set consisted of Tianshu (ST 25), ST 29, CV 3, CV 6, SP 6, Taichong (LR 3), Neiguan (PC) 6 and GV 20. Patients in the sham acupuncture group accepted shallow acupuncture methods through EA without electricity at 4 non-meridian points in each shoulder and upper arm. Outcome measures included body mass index (BMI), waist-hip-ratio (WHR), oral glucose tolerance test (OGTT), insulin release test, glucose and lipid metabolism indicators such as total cholesterol (TC), triglycerides, high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol, adiponectin, leptin, visfatin, resistin, and interleukin (IL-6).@*RESULTS@#Twenty-six subjects in the true acupuncture group and 20 subjects in the sham group completed the clinical trial. After 16 weeks of treatment, no significant difference in the outcome measures were observed between the two groups (P>0.05). However, as compared with baseline data, a reduction in weight, BMI, hipline, WHR, fasting glucose, homeostatic model assessment of insulin sensitivity, visfatin and HDL-C, and an increase in resistin and IL-6 were observed in the true acupuncture group (P<0.05). In addition, a reduction in visfatin and an increase in TC were also observed in the sham group (P<0.05).@*CONCLUSIONS@#Acupuncture may have a beneficial effect in the treatment of PCOS by improving glucose and lipid metabolism. Moreover, the sham acupuncture may be not completely ineffective. Sham acupuncture may improve some of the aspects of the glucose and lipid metabolism of PCOS patients through a placebo effect. (Registration Nos. ChiCTR-TRC-12002529 and NCT01812161).
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Femelle , Humains , Thérapie par acupuncture , Glucose , Insulinorésistance , Métabolisme lipidique , Syndrome des ovaires polykystiques/thérapie , CélibataireRésumé
BACKGROUND@#Andersson lesions (ALs), also known as spondylodiscities, destructive vertebral lesions and spinal pseudarthrosis, usually occur in patients with ankylosing spondylitis (AS). Inflammatory and traumatic causes have been proposed to define this lesion. Different surgical approaches including anterior, posterior, and combined anterior and posterior procedure have been used to address the complications, consisting of mechanical pain, kyphotic deformity, and neurologic deficits. However, the preferred surgical procedure remains controversial. The aim of this study was to illustrate the safety, efficacy, and feasibility of a modified posterior wedge osteotomy for the ALs with kyphotic deformity in AS.@*METHODS@#From June 2008 to January 2013, 23 patients (18 males, 5 females) at an average age of 44.8 years (range 25-69 years) were surgically treated for thoracolumbar kyphosis with ALs in AS via a modified posterior wedge osteotomy in our department. All sagittal balance parameters were assessed by standing lateral radiography of the whole spine before surgery and during the follow-up period. Assessment of radiologic fusion at follow-up was based on the Bridwell interbody fusion grading system. Ankylosing spondylitis quality of life (ASQoL) and visual analog scale (VAS) scores were performed to evaluate improvements in daily life function and back pain pre-operatively and post-operatively. Paired t tests were used to compare clinical data change in parametric values before and after surgery and the Mann-Whitney U test was employed for non-parametric comparisons. The radiographic data change was evaluated by repeated measure analysis of variance.@*RESULTS@#The mean operative duration was 205.4 min (range 115-375 min), with an average blood loss of 488.5 mL (range 215-880 mL). Radiographical and clinical outcomes were assessed after a mean of 61.4 months of follow-up. The VAS back pain and ASQoL scores improved significantly in all patients (7.52 ± 1.31 vs. 1.70 ± 0.70, t = 18.30, P 0.05, respectively).@*CONCLUSIONS@#The modified posterior wedge osteotomy is an accepted surgical procedure for treating thoracolumbar kyphosis with ALs in AS and results in satisfactory local kyphosis correction, solid fusion, and good clinical outcomes.
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Objective@#To study the effect of low-to-moderate dose glucocorticoid therapy on viral clearance time in patients with COVID-19.@*Methods@#A total of 72 patients diagnosed with COVID-19 from January 19 to February 17, 2020 at the First Affiliated Hospital, School of Medicine, Zhejiang University were recruited. All patients received oral abidol and/or combined lopinavir/ritonavir, darunavir antiviral, and symptomatic supportive care. Among them, 51 patients received methylprednisolone (0.75-1.50 mg·kg-1·d-1) (glucocorticoid treatment group), and 21 patients who did not use glucocorticoid were the control group. The time of stable virologic conversion insputumand the time of radiologic recovery in lungsince onset were compared between the two groups and among the normal patients.The Kruskal-Wallis test or Fisher exact test was used to compare the difference between groups.@*Results@#The median ages of the glucocorticoid group and the control group were 52 [interquartile range (IQR):45, 62] years and 46 (IQR: 32, 56)years, and the differences were significant (P<0.05). The clinical conditions at hospital admission were different between the two groups (P<0.01). There were 52.0% critical ill patients in the glucocorticoid treatment group, compared to that of 71.4% normal patients in the control group. The median times from the onset tostable virologic conversion to negative in the two groups were 15 (IQR:13,20) days and 14 (IQR:12,20) days (P>0.05), and the difference was no statistically significant. The median times from onset to radiologic recovery were 13 (IQR: 11,15) days and 13 (IQR:12,17) days in the two groups, and there was no difference (P>0.05). In ordinary patients, the median timesfrom the onset tostable virologic conversion insputum were no difference (P>0.05), with 13 (IQR:11,18) days in the glucocorticoid group and 13 (IQR:12,15) days in the control group; The median times from onset to radiologic recovery in lungwere also no difference (P>0.05), with 12 (IQR: 10,15)days in the glucocorticoid group and 13 (IQR: 12,17) days inthe control group.@*Conclusions@#Low-to-moderate glucocorticoid treatment has no effect on the time of virus clearance in patients with different clinical types of COVID-19. The glucocorticoid is not recommended since no effectiveness on accelerating the improvement of radiologic recovery in lung has been observed.
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Objective:To study the effect of low-to-moderate dose glucocorticoid therapy on viral clearance in patients with COVID-19.Methods:A total of 72 patients diagnosed with COVID-19 from January 19 to February 17, 2020 at the First Affiliated Hospital, Zhejiang University School of Medicine were recruited. All patients received oral arbidol and combination of lopinavir/ritonavir or darunavir/cobistitat for antiviral therapy, and symptomatic supportive care. Among them, 51 patients received methylprednisolone (0.75-1.50 mg·kg -1·d -1) (glucocorticoid treatment group), and 21 patients did not use glucocorticoid (control group). The time of virologic negative conversion in sputum and the time of radiologic recovery in lung since onset were compared between the two groups. The Kruskal-Wallis test or Fisher exact test was used to compare the difference between groups. Results:The median ages of the glucocorticoid group and the control group were 52 (45, 62) and 46 (32, 56) years ( χ2=4.365, P<0.05). The clinical conditions at hospital admission were different between the two groups ( P<0.01). The severe cases accounted for 52.0%, while moderate cases in the control group accounted for 71.4%. The median times from the onset to virologic negative conversion in the two groups were 15 (13, 20) and 14 (12, 20) days ( P>0.05). The median times from onset to radiologic recovery were 13 (11, 15) and 13 (12, 17) days in the two groups ( P>0.05). In moderate cases, the median times from the onset to virologic conversion in sputum were 13 (11, 18) days in the glucocorticoid group and 13 (12, 15) days in the control group ( P>0.05). The median times from onset to radiologic recovery in lung were 12 (10, 15) and 13 (12, 17) days, respectively ( P>0.05). Conclusions:Low-to-moderate glucocorticoid treatment has no effect on the time of virus clearance in patients with different clinical types of COVID-19, and also no effect on accelerating radiologic recovery in lung, so it is not recommended.
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Objective To optimize the quality management of project completion,improve the quality of scientific research outcomes,as well as promote the sustainable development of medical science and technology.Methods Based on the statistical analysis of the completion and postponement of the 2016-2018 provincial basic research projects in a medical school,explored the potential factors of project postponement.Identified possible problems in project execution and management,and furtherly,proposed effective countermeasures and suggestions for improvement.Results The main factors identified causing the postponement of project completion include the technique bottleneck of the experiment,unsatisfied research outcomes,long term of manuscript review,not well organized process management and so on.To deal with those problems,proposals including enhancing the publicity and education,optimizing the incentive system,reinforcing the whole process management,improving the multi-level management and strengthening the construction of scientific research integrity were put forward.Conclusions The quality management of project completion requires an improvement in the delicacy management of scientific research projects and a more comprehensive enhancement in cognition,rules and regulations,management means and scientific research integrity construction.
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Proteases are important molecules that are involved in many physiological and pathological processes of the human body, such as growth, apoptosis and metastasis cancer cells. They are potential targets in cancer diagnosis and biotherapy. In this study, we analyzed the salivary protease spectrum of patients with oral squamous cell carcinoma (OSCC), oral benign masses and chronic periodontitis, as well as that of health, using human protease array kits, enzyme-linked immunosorbent assay, western blot and immunofluorescence. The salivary protease spectrum was found to be associated with oral diseases. For example, the saliva of patients with OSCC contained increased numbers of proteases than those of other oral diseases and health. The levels of matrix metalloproteinase (MMP)-1, MMP-2, MMP-10, MMP-12, A disintegrin and metalloprotease (ADAM)9, A disintegrin and metalloprotease with thrombospondin type 13 motifs (ADAMST13), cathepsin V and kallikrein 5 in the saliva of patients with OSCC were significantly increased compared with those of other groups. Taking MMP-1, cathepsin V, kallikrein 5 and ADAM9 as biomarkers of OSCC, cutoff values were199, 11.34, 9.29 and 202.55 pg·mL, respectively. From the area under the curve, sensitivity and specificity, the combination of cathepsin V/kallikrein5/ADAM9 was an optimal biomarker for diagnosing OSCC. Thus, analysis of the salivary protease spectrum may be an innovative and cost-efficient approach to evaluating the health status of the oral cavity. Specifically, increases in cathepsin V, kallikrein 5 and ADAM9 may be useful biomarkers in the screening and diagnosis of OSCC.
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Humains , Protéines ADAM , Marqueurs biologiques tumoraux , Carcinome épidermoïde , Diagnostic , Métabolisme , Matrix metalloproteinase 9 , Protéines membranaires , Tumeurs de la bouche , Diagnostic , Métabolisme , Salive , ChimieRésumé
Objective: To optimize the recovery technology for 6 kinds of toxic alkaloids in the toxic wastewater from processing of Aconiti Radix with macroporous resin. Method:With the rates of adsorption and elution of benzoylmesaconine,benzoylaconine,benzoylhypaconine,mesaconitine,hypaconitine and aconitine as indexes,static and dynamic adsorption-elution tests were used to select the best one from 15 kinds of macroporous resin,and the recovery technology parameters of six toxic alkaloids in the wastewater from processing of Aconiti Radix were optimized. Result:D101 macroporous resin had a good adsorption and elution effect on 6 kinds of toxic alkaloids in the wastewater from processing of Aconiti Radix,its optimum technology conditions were as follows:each gram of macroporous resin could be used to treat processing wastewater from 4.3 g of Aconiti Radix,the sample loading speed was not higher than 3.0 mL·min-1,the resin column was eluted with 6 BV of 70% ethanol after removing impurities with 2 BV of water.The recoveries of benzoylmesaconine,benzoylaconine,benzoylhypaconine,mesaconitine, hypaconitine and aconitine were 98.03%,94.09%,96.53%,78.15%,85.40% and 70.57%,respectively. Conclusion:D101 macroporous resin can be used for detoxification treatment of processing wastewater of Aconiti Radix,at the same time,6 kinds of alkaloids are effectively recovered,which can solve the environmental problems and create certain economic benefits,and the optimized process conditions are stable and feasible.
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Objective: To investigate the removal effect of 5 kinds of common flocculants on 6 kinds of toxic alkaloids in processing wastewater of Aconiti Radix. Method: HPLC was employed to determine contents of 6 kinds of alkaloids in the processing wastewater of Aconiti Radix before and after flocculation.The mobile phase consisted of acetonitrile-tetrahydrofuran(25:15)-0.1 mol·L-1 ammonium acetate solution(each 1 L contains 0.5 mL of glacial acetic acid) for gradient elution, volume flow rate was 1.0 mL·min-1, detection wavelength was 235 nm.The removal characteristics and effects of five common flocculants of ferric chloride, aluminum sulfate, polymeric ferric sulfate, polyaluminum chloride/polyacrylamide(PAC/PAM) and sodium polyacrylate were compared and preliminarily optimized. Result: The 5 kinds of flocculants had certain selectivity for different types of alkaloids, and the removal of 6 kinds of alkaloids showed obvious differences.Among them, the PAC/PAM attenuated relative superiority, when the pH 6, adding amount of 0.25 g·L-1 and PAC-PAM dosing ratio of 30:1, comprehensive removal effect was relatively good, removal rates of mesaconitine and hypaconitine was 85.4%and 58.3%, respectively. Conclusion: The flocculation method can be used as a pretreatment process to reduce the toxicity of processing wastewater of Aconiti Radix.
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Objective: To compare the risk angle and safety angle of needling Yamen (GV 15) between the atlanto-axial dislocation (AAD) patients and healthy subjects. Methods: A total of 177 AAD patients diagnosed and treated at the Center of Upper Cervical Vertebra of Beijing China-Japan Friendship Hospital between January 2010 and January 2018 were included in the AAD group. Another 207 healthy subjects were included in the normal group. There were totally 191 males and 193 females. The MRI scan was performed for the cervical vertebrae to measure the risk angle and safety angle of acupuncture at Yamen (GV 15) on the sagittal image. Results: In the AAD group, the risk angle was (13.14±3.99)° and the relative safety angle was (10.31±3.23)° for the perpendicular needling, while the oblique needling risk angle was (9.09±3.09)° for the male; the risk angle was (12.12±2.74)° and the relative safety angle was (10.56±2.09)° for the perpendicular needling, while the oblique needling risk angle was (9.70±2.95)° for the female. In the normal group, the risk angle was (7.89±1.59)° and the relative safety angle was (10.21±3.55)° for the perpendicular needling, while the oblique needling risk angle was (16.07±1.77)° for the male; the risk angle was (6.93±1.45)° and the relative safety angle was (10.70±2.94)° for the perpendicular needling, while the oblique needling risk angle was (14.89±2.18)° for the female. The perpendicular needling risk angles for the males and females in the AAD group were larger than those in the normal group, and the differences were statistically significant (bothP<0.01); for the inner-group comparison, there was no significant difference in the perpendicular needling risk angle between the male and the female in the AAD group (P>0.05); however, the perpendicular needling risk angle for the male was larger than the female, and the difference was statistically significant in the normal group (P<0.01). There were no significant differences in the relative safety angle for both the male and the female between the AAD group and the normal group (bothP>0.05). For the inner-group comparison, there was no significant difference in the relative safety angle between the male and the female (P>0.05). The oblique needling risk angles for both the males and females were smaller in the AAD group than those in the normal group, and the differences were statistically significant (bothP<0.01); the oblique needling risk angle for the male was not significantly different from that for the female in the AAD group (P>0.05); in the normal group, the oblique needling risk angle for the male was larger than that for the female, and the difference was statistically significant (P<0.01). Conclusion: Under the AAD condition, the risk angle and safety angle of acupuncture at Yamen (GV 15) change significantly, perpendicular needling should be better if performed slightly lower than the horizontal direction, and the oblique needling should be safer across the occipital foramen toward the occipital bone.