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Interleukin (IL)-36 is a family of cytokines that belongs to the larger IL-1 superfamily. IL-36 agonist/antagonist binds to the interleukin-36 receptor involving in physiological inflammation regulation and pathogenesis of many inflammatory diseases. In inflammatory joint diseases, the expression of IL-36 changes, and some studies have initially explored the role of IL-36 in these diseases. In psoriatic arthritis, IL-36 signal mediates plasma cell and fibroblast-like synoviocyte crosstalk presenting IL-36 agonist/antagonist imbalance. In rheumatoid arthritis, IL-36 agonists induce fibroblast-like synoviocyte to produce pro-inflammatory factors, while IL-36 antagonist deficiency leads to lesion progression. In osteoarthritis, IL-36 agonists induce chondrocytes to produce catabolic enzymes and pro-inflammatory factors. This article reviews the expression and function of IL-36 in different inflammatory joint diseases to provide a reference for revealing their pathogenic mechanisms and discovering therapeutic targets.
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Humans , Interleukins , Arthritis, Rheumatoid , Osteoarthritis/pathology , Arthritis, Psoriatic/metabolism , CytokinesABSTRACT
To give full play to the important role of courses for ideological and political education in moral cultivation, teaching group in the course of oral histology and pathology in Zhejiang University systematically studied the teaching model of which ideological and political education integrated into the course of oral histology and pathology, and put forward a quality evaluation index system of the course. This paper emphatically introduces the general framework of the course, as well as the experience and practices in the aspects of resource mining, teaching design, curriculum evaluation, etc. The quality of the course was evaluated by using the system, which showed that the grade of the course was AAA (excellent) and 95.5% (275/288) students agreed to integrate ideological and political content into the course. The teaching group believes that the integration of the ideological and political content in the course reflects the complementary effect of "teaching" and "educating", and the ideological and political quality as well as the professional level of the teachers are the primary factor to determine the quality of the course. This paper aims at providing a reliable reference for promoting the construction of courses for ideological and political education in the area of oral medical education.
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BACKGROUND@#It is not clear whether sacubitril/valsartan is beneficial for patients with heart failure (HF) with reduced ejection fraction (HFrEF) and low systolic blood pressure (SBP). This study aimed to investigate the efficacy and tolerability of sacubitril/valsartan in HFrEF patients with SBP < 100 mmHg.@*METHODS & RESULTS@#An observational study was conducted on 117 patients, 40.2% of whom had SBP < 100 mmHg without symptomatic hypotension, and 59.8% of whom had SBP ≥ 100 mmHg in an optimized HF follow-up management system. At the 6-month follow-up, 52.4% of patients with SBP < 100 mmHg and 70.0% of those with SBP ≥ 100 mmHg successfully reached the target dosages of sacubitril/valsartan. A reduction in the concentration of N-terminal pro-B-type natriuretic peptide was similar between patients with SBP < 100 mmHg and SBP ≥ 100 mmHg (1627.5 pg/mL and 1340.1 pg/mL, respectively; P = 0.75). The effect of sacubitril/valsartan on left ventricular ejection fraction was observed in both SBP categories, with a 10.8% increase in patients with SBP < 100 mmHg (P < 0.001) and a 14.0% increase in patients with SBP ≥ 100 mmHg (P < 0.001). The effects of sacubitril/valsartan on SBP were statistically significant and inverse across both SBP categories (P = 0.001), with an increase of 7.5 mmHg in patients with SBP < 100 mmHg and a decrease of 11.5 mmHg in patients with SBP ≥ 100 mmHg. No statistically significant differences were observed between the two groups in terms of the occurrence of symptomatic hypotension, deteriorating renal function, hyperkalemia, angioedema, or stroke.@*CONCLUSIONS@#Within an optimized HF follow-up management system, sacubitril/valsartan exhibited excellent tolerability and prompted left ventricular reverse remodeling in patients with HFrEF who presented asymptomatic hypotension.
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While the hippocampus has been implicated in supporting the association among time-separated events, the underlying cellular mechanisms have not been fully clarified. Here, we combined in vivo multi-channel recording and optogenetics to investigate the activity of hippocampal interneurons in freely-moving mice performing a trace eyeblink conditioning (tEBC) task. We found that the hippocampal interneurons exhibited conditioned stimulus (CS)-evoked sustained activity, which predicted the performance of conditioned eyeblink responses (CRs) in the early acquisition of the tEBC. Consistent with this, greater proportions of hippocampal pyramidal cells showed CS-evoked decreased activity in the early acquisition of the tEBC. Moreover, optogenetic suppression of the sustained activity in hippocampal interneurons severely impaired acquisition of the tEBC. In contrast, suppression of the sustained activity of hippocampal interneurons had no effect on the performance of well-learned CRs. Our findings highlight the role of hippocampal interneurons in the tEBC, and point to a potential cellular mechanism subserving associative learning.
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Combining with advances in optogenetics and feedback control of physiological function, we have utilized self-made PPDP (preview, presentation, demonstration, promotion) teaching method to clarify how various physiological functions are regulated by the nervous system and carried out physiological innovation experiment activities. The innovative experiments aim to cultivate students' self-study capability, broaden their vision, enhance their interest in physiology, and finally promote the effect of physiological theory teaching. We herein summarize our practice of closed-loop control of innovative experimental teaching in optogenetics from the following four facets: education concept, students and teacher resources, teaching design, and teaching experience. This summary is trying to explore new experiences of promoting students' participation in teaching activities and improving the teaching quality of physiology.
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Based on archival materials, the Xiangya's anti-epidemic history in a century from its establishment to 2020 is divided into 4 stages. The first stage (1906-1926), Edward Hicks Hume and YAN Fuqing, the founders of Xiangya, prevented and controlled smallpox and plague. The second stage (1929-1953), during the resumption of Xiangya, students prevented and controlled cholera, plague, dysentery, typhus, and other infectious diseases. In the third stage (1953-1999), in a peacetime, Xiangya actively fought against schistosomiasis, hydatidosis, malaria, leprosy, tuberculosis and other epidemics. The fourth stage (2000-2020), the era of Central South University. Medical staff in Xiangya fight SARS, influenza A (HN) flu, Ebola hemorrhagic fever, coronavirus disease 2019, etc. Over the past hundred years, Xiangya people joined together to spread benevolence and love, apply medical knowledge and skills, combat the epidemic and rescue people in difficulties, which made a great contribution to the motherland and the people.
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Humans , Betacoronavirus , China , Communicable Disease Control , History , Communicable Diseases , History , Coronavirus Infections , Epidemics , History , History, 20th Century , History, 21st Century , Incidence , Pandemics , Pneumonia, ViralABSTRACT
Metabolomics methods were applied in the study of the toxicity of environmental pollutants. It has been shown that exposure to heavy metals such as mercury, arsenic, cadmium, chromium and lead could cause significant changes in energy, lipids, nucleic acids and amino acids in mammalian cells. After exposure to benzo(a)pyrene [B(a)P], the glands of Pinctada pumila could produce various changes, such as energy metabolic disorder, cell damage, signal transduction disorder, oxidative stress and osmotic disorder. Persistent organic compounds polychlorinated biphenyls (PCBs) could exert toxic effects on Zebrafish embryos through affecting amino acid metabolism, DNA and protein methylation and biosynthesis. After exposure to endocrine disruptors, such as nonylphenol, octylenediester phthalate and bisphenol propane, goldfish showed energy, lipid and nucleic acid metabolic disorders.
Subject(s)
Animals , Benzo(a)pyrene , Environmental Pollutants , Metabolomics , Oxidative StressABSTRACT
The language of hearing-impaired children is poorly developed. There is a lagging development of spoken language, which is manifested in pronunciation, grammar and pragmatics. Written language has difficulties in understanding and expression. Sign language develops normally, but it affects the spoken and written language of hearing-impaired children. This paper summarized the interventions, such as medicine, speech and family, according to the law of language development of children, in order to provide reference for the study and intervention of language development for hearing-impaired children.
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Cytochrome P450(CYP450),one of the most important enzymes in the human body,medi?ates the activation and toxicity of indirect poisons as well as indirect carcinogens. CYP450 is a super?family mainly composed of CYP1A, CYP1B, CYP2A, CYP2B, CYP2C, CYP2E, CYP2W, CYP3A and their activities are widely modulated by epigenetic manners, such as DNA methylation, histone modifi?cation and microRNA interference.Indirect carcinogens including benzo(a)pyrene,2,3,7,8-tetrachlorod?ibenzo-p-dioxin,diethylstilbestrol,aflatoxin B1 and cyclophosphamide,can change epigenetic modifica?tions, such as specific changes in DNA methylation, histone acetylation, methylation or ubiquitination, and up-or down-regulation of microRNA expression,which affect the function of the major subtypes of CYP450 and their role in indirect carcinogen activation.
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<p><b>OBJECTIVE</b>To explore the characteristics of mutations 4 common deafness-related genes among 216 patients from Shanghai area with non-syndromic hearing impairment (NSHI).</p><p><b>METHODS</b>Thirteen mutation sites in the four genes, namely GJB2 (c.35delG, c.176del16, c.235delC, c.299delAT, and c.155delTCTG), SLC26A4 (c.IVS7-2A>G, c.2168A>G, and c.1229C>T), mtDNA 12SrRNA (m.1494C>T, m.1555A>G, m.7445A>G, and m.12201T>C) and GJB3 (c.538C>T) were detected among the 216 patients and 41 individuals with normal hearing. The frequency and types of mutations were compared between the two groups.</p><p><b>RESULTS</b>Among the 216 NSHI patients, the total detection rate was 16.20% (35/216). GJB2 mutations were found in 17(7.87%) of the 216 patients, which included 5 cases with homozygous c.235delC mutation, 5 with homozygous c.235delC mutation, 1 with homozygous c.299delAT mutation, and 1 with homozygous c.299delAT mutation. c.235delC and 299delAT mutations were found in 5 cases. SLC26A4 mutation was found in 12(5.56%) of the 216 patients, which included 2 cases with homozygous c.IVS7-2A>G mutation, 9 with homozygous c.IVS7-2A>G mutation, and 1 with homozygous c.2168A>G mutation. Homogeneous mtDNA 12SrRNA m.1555A>G mutation was found in 6(2.78%) of the 216 patients. No GJB3 gene mutation was detected. No mutation of the 4 genes were detected in the 41 individuals with normal hearing. In 2 cases of the 12 patients with SLC26A4 gene mutation, CT scan of the temporal bone has confirmed expansion of vestibular aqueduct.</p><p><b>CONCLUSION</b>Above results indicated that GJB2 and SLC26A4 were the major genes involved with hearing loss in Shanghai area.</p>
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Objective To observe the T cells immune response to Enolase (Eno),an immunodominant antigen of Candida albicans.Methods Determined the frequencies of positive spot-forming cells (SFCs) of Eno antigen-specific T cells secreting IFN-γ,IL-4 and IL-17A in the PBMCs of 25 healthy individuals by ELISPOT assay.Results After Eno stimulation,the SFCs of IFN-γ,IL-4 and IL 17A in 25 healthy persons were 14.00(8.50,39.00),0(0,0) and 2(1,4.50),respectively.Either the SFCs of IFN-γ or those of IL-17A were significantly higher than those of IL-4 (P＜0.05).The difference between SFCs of IFN-γ and those of IL-17A was also significant (P=0).The response rates of IFN-γ,IL-4 and IL-17A were 100％ (25/25),4.00％ (1/25) and 88.00％ (22/25),respectively.The difference between either IFN-γor IL 17A and IL-4 was significant (values all P＜0.05).Eno induced strong response (SCFs≥20) for IFN-γ in 10 healthy individuals (40.00％,10/25),but failed to induce strong response for IL-17A and IL-4 in all the volunteers.Major healthy individuals (84.00％,21/25)showed both Th1 and Th17 cells response against Eno,12.00％ (3/25) showing Th1 cells response in isolation,and none showed Th2 or Th17 cells response individually.Conclusion Eno of Candida albicans could induce immunodominant responses of Th1 and Th17 cells,which was considered to provide protection to IC.Eno might be a potential protective vaccine against IC.
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Objective To investigate the relationships between expressions of HPV and EBV in larynge-al carcinoma. Methods DNA flow-through hybridization and gene chip genotyping technology(HybriMax)and real-time quantitative PCR were used for 37 subtypes of HPV detection and quantitative detection of EBV in 101 cases of laryngeal cancer paraffin embedded tissue specimens. 43 cases of vocal cord polyp of paraffin embedded tissue specimens were used as the controls. Results The positive rate of laryngeal carcinoma was 13.86% in group HPV and 9.3% in the control group ,with no statistically significant difference between the positive expres-sions of HPV in the laryngeal carcinoma group and control group(P>0.05). The positive rate of laryngeal carci-noma was 63.37% and 13.95%,respectively ,in group EBV ,and the control group ,with significant difference between them(P 0.05),but the difference was statistically significant in highly differentiated EBV as compared with those with low differentiation type,medium differentiation and poor differentiation(P 0.05). Conclusions The incidence of laryngeal carcinoma is closely related with EBV infection ,possibly relationed with HPV and high-risk subtypes of HPV have a certain role in the process of induced laryngeal carcino-ma. The gender ,age and duration of disease have no significant correlation with EBV infection. This study will provide a basis for further invesgitation of pathogenesis of laryngeal cancer and prevention and treatment of larynge-al cancer.
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The gene polymorphisms of human being will cause abnormality in the expression of corresponding gene,which is closely related to the physiological function and disease.Cytochrome P450,cyclooxygenase and lipoxygenase are vital enzymes that mediated the oxidative metabolism process for exogenous chemicals,and play important roles in activating the indirect carcinogens and metabolizing clinical drug;the gene polymorphisms of these enzymes can change the expression and activity of enzymes,affect the metabolic transformation of carcinogens,and then give rise to difference in the susceptibility to neoplasms.Studying the relationship between the gene polymorphisms of oxidative metabolism enzyme for endogenous and exogenous chemicals and the susceptibility to neoplasms can provide scientific basis for probing into the genetic markers and the pathogenesis of neoplasms.
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The indexes of smoking in China has been the top 1 of the world,including the total smoking,per capita and daily average smoking level.China has been the largest smoking country in the world,while smoking has become the biggest challenge for residents' health.Instead of decreasing,the total smoking and per capita indexes in China increased,which became a problem of concern.The total health damages,the largest international economic lost,negative social benefits and the international images were resulted by the tobacco.It is urgent to carry out the carpet smoking ban.The central government should carry out policy to secure public health and construct public health environment.Improving tobacco product prices,improving tobacco tax and decreasing the affordable tax for tobacco were the most direct method.Normal addition mechanism should be further formed.The added taxes could be applied as the assistance of public health.The significance of "Carpet Smoking Control Battle" was equal to "Battle for the Blue Sky".
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OBJECTIVE@#To establish an interference mode of group counseling for diabetic patients with depression and to evaluate the effectiveness of this mode on depression, treatment compliance and blood sugar level in the patients. @*METHODS@#One hundred diabetic patients with depression were randomly divided into a counseling group and a control group (n=50 per group). Self-Rating Depression Scale (SDS) was applied to all the patients. The interference mode of group counseling was established through literature review, expert consultation or interview. The counseling group received counseling for 8 times within 2 months. @*RESULTS@#There was a significant difference in the SDS scores at 0, 3, 6 or 12 months after the intervention between the 2 groups (P0.05). There was a significant difference in the compliance between any two time points after the intervention (P<0.05). Fasting blood glucose (FBG), 2 h postprandial blood glucose (2hPG) or glycosylated hemoglobin (HbA1c) was significantly different at any two time points after the intervention (P<0.05). @*CONCLUSION@#Group counseling can improve depression, compliance and blood sugar control in the diabetic patients.
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Humans , Blood Glucose , Counseling , Depression , Therapeutics , Diabetes Mellitus, Type 2 , Psychology , Therapeutics , Glycated Hemoglobin , Patient Compliance , Psychotherapy, GroupABSTRACT
5-Lipoxygenase, one of lipoxygenase isozymes, is a well-studied oxidative metabolism enzyme. It widely exists in various human tissues and cells, participates in the oxidative metabolism of endogenous and exogenous chemicals, and produces a variety of metabolites, all of which contribute to the occurrence of human diseases, such as inflammation, asthma, atherosclerosis, and tumor and so on. The expression of 5-lipoxygenase is at low level in normal human tissues while at high level in abnormal tissues. 5-Lipoxygenase is closely related to many kinds of diseases in human ovary, brain, cardiovascular system, lung, liver, pancreas and other tissues. The abnormal expression of 5-lipoxygenase tends to promote the development of the disease.
Subject(s)
Humans , Arachidonate 5-Lipoxygenase , Physiology , Atherosclerosis , Inflammation , NeoplasmsABSTRACT
<p><b>OBJECTIVE</b>To study the influence of lipopolysaccharide (LPS)-induced inflammation on the testicular histology and reproductive endocrine function in male rats and investigate the possible mechanism of inflammation affecting male fertility.</p><p><b>METHODS</b>Thirty-six male SD rats were randomly divided into a control group (A) and three LPS intervention groups (B, C, and D) to receive saline and LPS (5 mg/kg i. p, once), respectively. The animals in groups B, C, and D were killed by anesthesia at 12, 24, and 72 hours after treatment. Histopathological changes in the left testis of the rats were observed by HE staining and the levels of the reproductive hormones T, FSH, and LH in the serum were determined by ELISA.</p><p><b>RESULTS</b>Compared with group B, group A showed clear structure of seminiferous tubules, orderly arrangement of spermatogenic cells, a slightly decreased number of sperm in some seminiferous tubular lumens, and shed spermatogenic cells in the rat testis tissue; group C exhibited thinner seminiferous epithelia, disordered structure of seminiferous tubules, irregular arrangement of spermatogenic cells, decreased number of mature sperm and obvious shedding of spermatogenic cells in seminiferous tubular lumens; group D manifested similar findings to those of group C, with even more shed spermatogenic cells that blocked the tubular lumens. The levels of serum T, LH, and FSH were (0.490 +/- 0.028) ng/ml, (6.290 +/- 0.515) ng/L, and (1.837 +/- 0.127) IU/L in group A, (0.460 +/- 0.024) ng/ml, (5.881 +/- 0.124) ng/L, and (1.707 +/- 0.098) IU/L in group B, (0.417 +/- 0.021) ng/ml, (5.123 +/- 0.271) ng/L, and (1.620 +/- 0.115) IU/L in group C, and (0.378 +/- 0.021) ng/ml, (4.504 +/- 0.279) ng/L and (1.562 +/- 0.216) IU/L in group D, all decreased in group B as compared with A (P > 0.05). The decreases of T and LH were extremely significant (P < 0.01) and that of FSH was significant in groups C and D (P < 0.05) in comparison with A.</p><p><b>CONCLUSION</b>LPS-induced inflammation affects the testicular tissue and reproductive endocrine function of male rats, resulting in decreased levels of serum T, LH, and FSH.</p>
Subject(s)
Animals , Humans , Male , Rats , Endocrine System , Physiology , Fertility , Physiology , Follicle Stimulating Hormone , Blood , Lipopolysaccharides , Toxicity , Luteinizing Hormone , Blood , Random Allocation , Reproduction , Seminiferous Tubules , Pathology , Spermatocytes , Testis , Pathology , Testosterone , BloodABSTRACT
Objective To investigate and evaluate the iodine nutritional status of school-age children in Yi county of Heibei Province,and to provide scientific basis for the development of control measures to iodine deficiency disorders.Methods Retrospectinely analyzed school-age children urinary iodine monitoring results of Yi County of Hebei Province from 1998 to 2011.One township was selected randomly in each of the five directions (east,west,south,north and center) from 1998 to 2011.One elementary school was randomly chosen in each of the five townships.And at least 20 urine samples of 8-10 years old children were randomly collected in each school selected.Urinary iodine contents were determined through arsenic cerium catalytic spectrophotometric method.Urinary iodine determination standard according to The Standard of Iodine Deficiency Disorders Elinination (GB 16006-2008) and The Iodine Deficiency Disorders Elinination Guide.Results A total of 1725 children urinary samples were collected from 1998 to 2011,urinary median was 243.26 μg/L,each of the median urinary iodine was higher than 100 μg/L.The ratio of urinary iodine less than 100 μg/L was ＜ 50％ over the years,and less than 50 μg/L was ＜ 20％.Overall,the highest value of urinary iodine stayed at approximately 200 μg/L,showing positively skewed distribution that was skewed to the right.Urinary iodine level was compared among different ages,gender and ethnicity,and the difference was not statistically significant(P ＞ 0.05).Conclusions In recent years,the iodine intake of school-age children of Yi County can meet the body needs,and the iodine nutrition is at an appropriate level.
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<p><b>OBJECTIVE</b>The oxidation of benzo (a) pyrene mediated by 5-lipoxygenase (5-LOX) were investigated in HBE cells in order to provide further proof that lipoxygenase is the alternative pathway for the oxidation of xenobiotics.</p><p><b>METHODS</b>Enzymic experiment: Soybean lipoxygenase (SLO), substrate (benzo[a] pyrene) and other component react in the enzymic system and the reaction product are detected by spectrophotometry. At the same time, in vitro detect of benzo (a) pyrene-DNA adducts with a UV spectrophotometer and HPLC. Cellular experiment: After HBE cells exposure to different poison (B[a]P 4, 8, 16, 32, 64, 128µmol/L, AA-861, naproxen or α- naphthoflavone 0.1, 1, 10 µmol/L) for 24 hours, the effect of benzo (a) -pyrene on cell survival rate were assessed by reductions of tetrazolium dye (MTT) and flow cytometry in cultured HBE cells, and the protein expressions of 5-lipoxygenase in the cells are tested by western-blot, and the DNA damages by the single cell gel electrophoresis. And then, the effect of the specific inhibitor of 5-lipoxygenase (AA-861) on 5-lipoxygenase protein expression and DNA damage in the cells are detected.</p><p><b>RESULTS</b>SLO can catalyze the co-oxidation of benzo (a) pyrene to generate benzo (a) pyrene-7,8-epoxide in the presence of hydrogen peroxide. GTP can inhibit the reaction , the IC50 value is 0.46 mg/L, the model equation is Probit (P) = 0.8985+2.6824 Log (dose). SLO can catalyze the co-oxidation of benzo (a) pyrene to generate a new product, but fail to form DNA adducts in vitro. HBE cell viability decreased with the benzo (a) pyrene concentration increased , but AA-861 and naproxen can inhibit it. Flow cytometry and single cell gel electrophoresis experiments show, Benzo (a) pyrene can induce 5-lipoxygenase protein expression, but AA-861 cannot in HBE. Benzo (a) pyrene causes toxic action and DNA damage in HBE, which can significantly inhibit by AA-861, the difference is statistically significant (P < 0.05).</p><p><b>CONCLUSIONS</b>The co-oxidate of benzo (a) pyrene by 5-LOX turns into electrophiles that covalently bind to DNA and induce DNA damage, which can be significantly inhibited by AA-861.</p>
Subject(s)
Humans , Benzo(a)pyrene , Metabolism , Cells, Cultured , DNA Adducts , Metabolism , DNA Damage , Epithelial Cells , Metabolism , Lipoxygenase , PharmacologyABSTRACT
<p><b>BACKGROUND</b>Oral squamous cell carcinoma (OSCC) is one of the most common malignancies in the oral and maxillofacial region. Yes-associated protein 1 (YAP1) has been implicated as a bona fide oncogene in solid tumors. We seek to elucidate the role of YAP1 in OSCC tissue.</p><p><b>METHODS</b>We identified YAP1 gene and protein overexpression in 30 OSCC patients and 10 normal oral mucosa tissues by immunohistochemistry, Western blotting and reverse transcription polymerase chain reaction (RT-PCR).</p><p><b>RESULTS</b>In the normal oral mucosa by immunohistochemical staining, YAP1 mainly located in both the cytoplasm and nucleus mainly the nuclei of the basal cells. In OSCC, the expression of YAP1 translocated from the nucleus to cytoplasm; YAP1 being mainly located in both the cytoplasm and nucleus of the adjacent mucosa. The expression of YAP1 gradual increased in normal oral mucosa, tumor adjacent mucosa and low grade, middle grade, high grade OSCC tissue by Western blotting. Significant difference was found between the expressions of the normal oral mucosa and OSCC tissue (P < 0.05). The coincidence was detected between the normal oral mucosa and OSCC tissue by RT-PCR (P < 0.05).</p><p><b>CONCLUSIONS</b>YAP1 is involved in the carcinogenesis and development of OSCC. There is a transformation between nucleus and cytoplasm.</p>