MicroRNAs (miRNA) plays an important role in biological development and disease occurrence and development, and acts as a "main switch" in biology. Among patients of essential hypertension, around 1/3 would suffer left ventricular hypertrophy (LVH). Hence, essential hypertension becomes an independent risk factor for cardiovascular diseases. And miRNAs plays an important role in the occurrence and development of LVH. This paper reviewed the role of miRNA in regulating the stress signaling pathway, defined its impact on the occurrence of LVH, and further emphasized the opportunities and challenges of miRNA as a biomarker and therapeutic target.
Essential Hypertension ; Humans ; Hypertension ; complications ; genetics ; Hypertrophy, Left Ventricular ; complications ; genetics ; MicroRNAs ; genetics ; Risk Factors ; Signal Transduction ; genetics

Abstract: Objective To investigate the prevalence and pathogenic characteristics of Yersinia enterocolitica infection in children with diarrhea under 5 years of age in western Yunnan, and to provide a basis for the prevention and treatment of infectious diarrhea in children. Methods Feces were collected from under five-year-old children with diarrhea in the First Affiliated Hospital of Dali University from 2020 to 2021. Clinical information of the cases was also collected. Yersinia enterocolitica was isolated from the samples after cold enrichment on selective culture plates, and the pathogenic characteristics of Yersinia enterocolitica were analyzed by biological type and serotype and virulence gene detection. Results A total of 397 feces were collected. Seven strains of Yersinia enterocolitica were isolated in three samples, and the prevalence of Yersinia enterocolitica infection was 0.76% (3/397). Among the three positive samples, two Yersinia frederiksenii or Yersinia intermedia were isolated in specimen No. 212 , and five Yersinia enterocolitica were detected in specimens No. 24 and 226. Two Yersinia enterocolitica isolated from one sample were biological type 1A, and the virulence gene test results were ail-/ystA-/ ystB+ /yadA-/virF-, which were non-pathogenic Yersinia enterocolitica. Three Yersinia enterocolitica isolated from the other sample were biological type 3, serotype O∶3 (rfbc+), and virulence gene detection results were ail+/ystA+/ystB-/yadA+ /virF+, which were pathogenic Yersinia enterocolitica. While pathogenic Yersinia enterocolitica was detected from feces of children with diarrhea at 11 months of age with a infection rate of 0.50%(2/397). Conclusion Sporadic infection of pathogenic Yersinia enterocolitica was found in under five-year-old children in western Yunnan Province. It is necessary to strengthen the monitoring and research of Yersinia enterocolitica.

Objective To investigate the percentages of Th17 and CD4+CD25+FoxP3+ regulatory T(Tr) cells and the levels of related cytokines IL-6,IL-23,IL-17 and TGF-β in serum of patients with anlylosing spondylitis(AS).Methods Forty patients with AS and 37 age-matched healthy donors were studied.Flow cytometry Was used to analyze the percentages of blood Th17 and CD4+CD25+FoxP3+Tr cells.The levels of serum IL-6,IL-23,IL-17 and TGF-β were assayed by enzyme-linked immunosorbent assay ( ELISA).Results The proportion of Th17 cells in AS group was significantly higher than those in normal group [ (1.02±0.34)％ vs (0.68±0.29)％,P＜0.05) ],and the proportion of CD4+CD25+FoxP3+ cells was lower in AS group comparing with normal group [(3.77±0.81)％ vs (4.69±1.23)％,P＜0.05)].Meanwhile,serum levels of IL-6,IL-23 and IL-17 were significantly higher in AS group than those in normal group [ (6,15±2.71) ng/L vs (3.31±1.65) ng/L; (9.44±3.12) ng/ml vs (5.82±2.61) ng/ml;(10.53±4.97) ng/L vs (6.78±3.26) ng/L,all P＜0.01 ].In contrast,TGF-β level was decreased in AS group compares with the normal group [ ( 4.76±2.15) ng/ml vs (5.16±2.02) ng/ml,P＞0.05 ],but the difference was not significant.No associations of serum eytokine levels with clinical and laboratory parameters were found in AS.Conclusion The abnormality Th17 cells and Tr cells and their related cytokines IL-6,IL-23,IL-17 and TGF-β changes in patients with AS,which may be involved in immunological pathogenesis of AS.

Objective To investigate the early effect of medium-dose ionic irradiation on the expression of Fos protein in the rat brain. Methods Fos protein was observed in rat brains at times ranging from 24 hours to 4 weeks after hemispheric irradiation (single-fraction maximal dose of 20Gy) with the immunohistochemical technique. Results Compared with that of the un-radiated rats,the expression of Fos protein in the irradiated brain decreased distinctly 24 hours and 1 week after irradiation.However,the quantity of Fos immunopositive cells increased gradually afterwards.At four weeks after radiation,expression of Fos protein recovered progressively in medulla oblongata and pons,in which Fos immunopositive cells were more than those in control group.In contrast,expression level of Fos protein in mesencephalon,diencephalons or telencephalon was still less compared with that of the un-irradiated rats.Conclusion The result suggested that the neuronal activity might be inhibited in certain nuclei of the rat brain in early stages after hemisphere irradiation,and this inhibitory phenomenon was more obviously in higher neural centers.

Abstract Long-term use of levodopa in the treatment of Parkinson's disease can cause motor complications, which seriously impair the patients'motor function, reduce the quality of life, and aggravate the functional disability. Since there has been no effective treatment for motor complications, clarifying the influencing factors and prevention methods are conducive to reducing the risk of incidence and improving the quality of life of the patients. This paper summarizes the types and mechanism of motor complications of Parkinson's disease, the influencing factors ( levodopa dose, onset age, Helicobacter pylori infection and high protein diet ) and preventive measures ( psychological intervention, low protein diet, rehabilitation exercise and drugs ), so as to provide reference for the prevention and control of the disease.

The importance and feasibility was analyzed of the teaching BBS for aiding classroom teaching based on campus network. The design, technique, content, advantages and deficiencies were presented of agricultural microbiology teaching BBS. The prospect also was discussed of teaching BBS based on campus network in this paper.

This study was aimed to investigate the effects of As2O3 on proliferation of B lymphoma Raji cell and to study the expression changes of VEGF mRNA. The modified MTT was adopted to evaluate the effect of As2O3 on proliferation of Raji cells. Semi-quantitative RT-PCR was used to detect the expression of VEGF121 and VEGF165 mRNA in Raji cells exposed to As2O3. The results showed that the As2O3 significantly inhibited the proliferation of Raji cells, the relationship between the inhibition rate and the concentrations of As2O3 was dose- and time-dependent. The VEGF121 and VEGF165 mRNA expressions were found in Raji cells, and both were well-matched in expression levels. After treatment of As2O3 at 1 micromol/L for 48 hours, the expression levels of VEGF121 and VEGF165 mRNA were significantly down-regulated and demonstrated negative correlation with the time of exposure to As2O3. Otherwise some difference were observed in effects of As2O3 on VEGF121 and VEGF165, the expression of VEGF165 mRNA was down-regulated earlier and longer than that of VEGF121, while no similar correlation was found in selected concentration groups. It is concluded that As2O3 can significantly inhibit the growth of Raji cells and may exerted its anti-angiogenesis effects by down-regulating the VEGF mRNA expression even in a low concentration for a long term.
Antineoplastic Agents ; pharmacology ; Arsenicals ; pharmacology ; Cell Proliferation ; drug effects ; Down-Regulation ; Humans ; Lymphoma, B-Cell ; metabolism ; pathology ; Oxides ; pharmacology ; RNA, Messenger ; biosynthesis ; genetics ; Vascular Endothelial Growth Factor A ; biosynthesis ; genetics

OBJECTIVETo investigate the relationship between Transitional CK19 positive cells and hepatic precancerous lesion in chronic hepatitis B patients.

METHODSWe observed the expression of CK19 in liver tissue of chronic hepatitis B patients by LSAB immunohistochemical staining, and examined serum AFP and ultrasonography one time per 3 months for one year.

RESULTSWe observed a population of CK19 positive cells-with size and structure between those of human oval cells and mature hepatocytes-that usually occurred along with oval-cell proliferation. It was suggested that these transitional cells may partly account for the elevation of serum AFP. One patient occurred hepatic carcinoma, another patient had low-echogenic nodules in liver parenchyma within the 1 year follow-up period.

CONCLUSIONTransitional CK19 positive cells could be regarded as a new possible pathological marker of hepatic precancerous lesion.

Adolescent ; Adult ; Biomarkers, Tumor ; Female ; Humans ; Keratins ; analysis ; Liver Neoplasms ; chemistry ; pathology ; Male ; Middle Aged ; Precancerous Conditions ; chemistry ; pathology ; Tomography, X-Ray Computed ; alpha-Fetoproteins ; analysis

OBJECTIVETo determine the serotype and genotype of a sample with ABO blood group discrepancies.

METHODSSerotype was determined with serological method. Sequence specific primer polymerase chain reaction (SSP-PCR) was carried out based on the serotype. Sequences of exons 6 and 7 of ABO gene was analyzed by sequence-based testing (SBT).

RESULTSCompletely agglutinated A antigen, half agglutinated B antigen and weak agglutinated anti-B antibody were detected in both erythrocytes and serum, which suggested presence of a ABw serotype. An A/Bw12 genotype was revealed by B subgroup detection. Sequences of exons 6 and 7 were 278CT, 297GA and 467CT, 526CG, 657CT, 703GA, 796CA, 803GC, 930GA, respectively. The genotype fit with A102/B101 except for a nt278 C>T mutation. Blood group antigen gene mutation database (BGMUT) search has confirmed the mutant allele to be Bw12.

CONCLUSIONAn A102/Bw12 genotype has been found in the Chinese population.

ABO Blood-Group System ; genetics ; Base Sequence ; Blood Group Antigens ; genetics ; Blood Grouping and Crossmatching ; methods ; Female ; Genotype ; Humans ; Middle Aged ; Molecular Sequence Data ; Mutation

OBJECTIVETo observe the effect of Bawei Xilei powder on CD3, CD4, CD8 T-lymphocytes in peripheral blood and colonic mucosa of rat with ulcerative colitis.

METHODSixty SD rats were randomly divided into 6 groups, normal group, model group, low, middle and high dosage Bawei Xilei powder group, Sulfasalazine group. Ulcerative colitis was induced by immunization with rabbit 's colonic mucous emulsified with completely Freund's adjuvant in all rats. Rats in low, middle and high dosage Bawei Xilei powder group were administered with 0.05, 0.1, 0.2 mg Bawei Xilei powder for 18 days by enema respectively. While rats in Sulfasalazine group were enema administered with 100 mg Sulfasalazine, and the rats in other group were administered with equal volume of saline enema as control. We analyzed expression of CD3, CD4, CD8 T-lymphocytes in peripheral blood by flow cytometry and in colonic mucous by immunohistochemistry.

RESULTIn peripheral blood, compared with normal group, in model group, the increased of CD4 T-lymphocytes and CD4 /CD8 ratio, the reduced of CD8 T-lymphocytes, these results were significant discrepancy (P < 0.01). Compared with model group, after treatment with Bawei Xilei powder, CD8 T-lymphocytes increased, but only high dosage Bawei Xilei powder group had discrepancy (P < 0.05). But low dosage Bawei Xilei powder group, other treatment groups' rats showed CD4/CD8 ratio were reduced significantly (P < 0.05). In colonic mucous, compared with normal group, in model group, Rats showed that expression of CD3, CD4 T-lymphocytes reduced and CD8 T-lymphocytes increased obviously (P < 0.05, P < 0.01). Compared with model group, expression of CD8 T-lymphocytes reduced significantly in all treatment groups (P < 0.05, P < 0.01).

CONCLUSIONBawei Xilei powder may regulate their balance between T-lymphocytes subgroup, consequently relieve inflammatory injury in favor of ulcer reparation and tissue regeneration.

Animals ; CD3 Complex ; metabolism ; CD4 Antigens ; metabolism ; CD8 Antigens ; metabolism ; Colitis, Ulcerative ; immunology ; metabolism ; Colon ; drug effects ; metabolism ; pathology ; Dose-Response Relationship, Drug ; Drugs, Chinese Herbal ; pharmacology ; Gene Expression Regulation ; drug effects ; Powders ; Rats ; T-Lymphocytes ; drug effects ; metabolism