Adult ; China ; epidemiology ; Circoviridae Infections ; epidemiology ; virology ; DNA, Viral ; analysis ; Female ; Genotype ; Hepatitis, Viral, Human ; virology ; Humans ; Male ; Substance Abuse, Intravenous ; virology ; Torque teno virus ; genetics ; isolation & purification

OBJECTIVETo compare the effects of the recipes for nourishing Shen-yin (NSY) and for warming recuperating Shen-yang (WRSY) on the activity of interleukin-1 (IL-1) and interleukin-6 (IL-6) in ovariectomy-induced osteoporosis rats.

METHODSFifty-five female rats were randomly divided into five groups: the control, the sham operation, the ovariectomy, the ovariectomy plus NSY and the ovariectomy plus WRSY group. The medication was starting from one week after operation and lasted continuously for 3 months. The proximal tibia of rats were analyzed with bone histomorphometry, the activity of IL-1 was detected with mouse thymocyte assay and the activity of IL-6 was detected with IL-6 dependence cell proliferation assay.

RESULTSThree months after ovariectomy, the percentage of trabeculae bone volume (TBV%) of tibia in rats was markedly reduced, but the percentage of trabeculae absorption surface (TRS%) and trabeculae formation surface (TFS%) significantly increased, and the activity of IL-1 and IL-6 increased obviously. These abnormal changes could be reversed to different degree by NSY or WRSY, but the effect of the latter was superior to that of the former.

CONCLUSIONThe inhibitory effect of WRSY on IL-1 and IL-6 activity was significantly better than that of NSY, which is one of the mechanisms of its superiority in preventing osteoporosis induced by ovariectomy in rats.

Animals ; Drug Therapy, Combination ; Drugs, Chinese Herbal ; pharmacology ; Female ; Interleukin-1 ; metabolism ; Interleukin-6 ; metabolism ; Osteoporosis ; etiology ; metabolism ; Ovariectomy ; Phytotherapy ; Random Allocation ; Rats ; Rats, Wistar

OBJECTIVETo construct a gene knock-out mutant of response regulator named RevS in Streptococcus suis serotype 2 virulent strain 05ZYH33, and to investigate the effects of its deletion on the biological characters of this pathogen and the pathogenesis to mice and piglets.

METHODSRecombinant gene knock-out vector consisting of Spc(r) cassette was constructed and flanking was constructed consisting of Spc(r) cassette with flanking homology regions to the RevS genes while the isogenic RevS-deficient mutant was screened by allelic replacement. The effects of RevS deletion on the basic biological characters of 05ZYH33 including growth stability, colonial morphology, haemolysis, Gram staining, growth curve and protein expression were examined in vitro. The mice and piglets were infected with 10(8) CFU wild virulent and mutant isolates.

RESULTSPCR analysis confirmed that the coding genes of RevS were replaced completely by Spc(r) cassette and the basic biological characters of 05ZYH33 did not undergo any apparent change. Balb/c mice infection assay indicated that RevS play a role in the pathogenesis of Streptococcus suis infections, while no remarkable difference was observed in the piglets' pathogenesis infection rates between mutant isolates deltaA05ZYH33 and wild-type isolates 05ZYH33.

CONCLUSIONThe mutant of Streptococcus suis 05ZYH33 response regulator was successfully constructed, while the mutation did not obviously affect the bacterial biological characters, while the knock-out mutant of RevS was shown to be attenuated in pathogenesis to mice and piglets.

Animals ; Bacterial Proteins ; genetics ; Gene Knockout Techniques ; methods ; Mice ; Mice, Inbred BALB C ; Models, Genetic ; Polymerase Chain Reaction ; Streptococcal Infections ; microbiology ; Streptococcus suis ; genetics ; pathogenicity

OBJECTIVETo determine the prevalence of Streptococcus suis and major pathogenic serotypes in middle part of Jiangsu province.

METHODSTonsillar specimens from 303 slaughtered pigs aged 6 to 8 months were investigated for the presence of Streptococcus suis and major pathogenic serotypes by polymerase chain reaction (PCR) method. Bacteriological examination compared with molecular genetics identification for three Streptococcus suis isolates were also done.

RESULTSThe overall carrier rate of Streptococcus suis was up to 88.0%, with the percentages of serotype 1(14), 2(1/2), 7 and 9 were 9.6%, 8.5%, 11.3% and 29.5% respectively in 2005. While in 2006, the prevalence of Streptococcus suis was 82.5%, with capsular types 1 (14), 2 (1/2), 7 and 9 were accounted for 17.6%, 2.4%, 25.8% and 20.0% of all the specimens. All the three isolates belonged to Streptococcus suis serotype 2,named 2a, 2f and 14e, which exhibiting the virulent phenotype cps2+/gdh+/mrp-/lepf-/sly-/fbps+/orf2+/89k-, cps2+/lgdh+/mrp-/epf-/sly-/fbps-/orf2-/89k- and cps2+/gdh+/mrp-/epf-/sly-/fbps/orf2-/ respectively. These isolates were all susceptible to amoxicillin, ampicillin, penicillin and resistant to amikacin and tetraycline. Clinical signs were not noted in BALB/c mice and rabbit.

CONCLUSIONPrevalence of the Streptococcus suis among the healthy herds in the areas was very high, with various capsule types of Streptococcus suis involved in the same herds, and the virulent phenotype of these 3 isolates were very different from those prevalent Streptococcus suis serotype 2 virulent isolates frequently discovered from the epidemic areas.

Amikacin ; therapeutic use ; Amoxicillin ; therapeutic use ; Ampicillin ; therapeutic use ; Animals ; China ; epidemiology ; Mice ; Mice, Inbred BALB C ; Molecular Epidemiology ; methods ; Penicillins ; therapeutic use ; Polymerase Chain Reaction ; Streptococcal Infections ; drug therapy ; epidemiology ; microbiology ; Streptococcus suis ; classification ; drug effects ; genetics ; pathogenicity ; Tetracycline ; therapeutic use ; Virulence

OBJECTIVETo observe the effect of Qubi Recipe (QR) on the expression of superoxide dismutase (SOD), malondialdehyde (MDA), glutathione peroxidase (GSH-Px), and hypoxia-inducible factor (HIF)-1alpha in rats with type II collagen-I induced arthritis (CIA), and to explore its therapeutic roles and mechanism.

METHODSTotally 72 male SD rats of SPF grade were recruited. Twelve were randomly selected as the blank control group. The CIA model was established in the rest 60 rats by subcutaneously injecting type II collagen of bovine emulsion from the tail root and induction of incomplete Freund's adjuvant. On day 15 after primary immunization rats were randomly divided into four groups, i.e., the CIA model group, the Tripterygium Glycosides (TG) group (at the daily dose of 9.68 mg/kg body weight), the high dose QR group (at the daily dose of 6.66 g/kg body weight), and the low dose QR group (at the daily dose of 3.33 g/kg body weight), 15 in each group. Corresponding medication was given to rats in all groups by gastrogavage once daily for 4 successive weeks. An equal volume of pure water was given to rats in the blank control group and the CIA model group by gastrogavage, once daily for 4 successive weeks. The swelling degree of the joints was measured. Rats were sacrificed after 4-week treatment. Plasma levels of SOD, MDA, and GSH-Px were measured with colorimetric method. The expression of HIF-1alpha was detected by immunohistochemistry.

RESULTS(1) Compared with the CIA model group, the swelling degree of the joints was significantly alleviated in the TG group and the high dose QR group (P < 0.01, P < 0.05), and it was obviously milder in the high dose QR group than in the TG group (P < 0.05). (2) Compared with the CIA model group, the activities of GSH-Px could be obviously elevated and activities of MDA lowered in the TG group, the high dose QR group, and the low dose QR group (P < 0.05). Plasma activities of SOD could be obviously elevated in the high dose QR group and the TG group (P < 0.05). (3) Compared with the CIA model group, the expression of HIF-1alpha obviously decreased in the TG group and the high dose QR group (P < 0.05), and it showed a decreasing tendency in the low dose QR group with no statistical difference (P > 0.05).

CONCLUSIONSQR could markedly alleviate the swelling degree of ankle joints in CIA model rats. Its therapeutic efficacy was superior to that of TG. Its mechanism might be achieved through down-regulating expression of HIF-1alpha in the joint, and regulating activities of SOD, MDA and GSH-Px in the plasma.

Animals ; Arthritis, Experimental ; drug therapy ; metabolism ; Drugs, Chinese Herbal ; pharmacology ; Glutathione Peroxidase ; blood ; Hypoxia-Inducible Factor 1, alpha Subunit ; metabolism ; Joints ; metabolism ; pathology ; Male ; Malondialdehyde ; blood ; Rats ; Rats, Sprague-Dawley ; Reactive Oxygen Species ; metabolism ; Superoxide Dismutase ; blood

OBJECTIVETo study the effect on promoter de-methylation, expression of ALDH1a2 gene and cell apoptosis by treated with 5-Aza-dC and TSA in five human bladder cancer cell lines.

METHODSHuman bladder cancer cell lines RT-4, 253J, 5637, BIU-87 and T24 were cultured and treated with 5-Aza-dC and(or) TSA. The expression of the ALDH1a2 gene was detected by RT-PCR and Western blot. The methylation status of gene promoter was determined by MSP, and the cell cycle profile was established by flow cytometry.

RESULTSALDH1a2 was silenced in five human bladder cancer cell lines. Re-expression of ALDH1a2 was detected after treated with 5-Aza-dC alone or TSA in combination. ALDH1a2 transcript was marked in each cell lines combined with 5-Aza-dC and TSA treatment which showed a synergistic effect on expression of ALDH1a2 transcript. Early apoptotic was the main mode of apoptosis and death of human bladder cancer cell lines induced by 5-Aza-dC and TSA. The percentage of early apoptotic cells was 1.4% in control group and 2.8% in TSA group, however, 20.2% in 5-Aza-dC group and 33.8% in 5-Aza-dC + TSA group, respectively. The groups of TSA, 5-Aza-dC and 5-Aza-dC + TSA were significantly different from control group (P < 0.05).

CONCLUSIONSAberrant methylation of ALDH1a2 gene is the main cause for gene transcriptional inactivation. Re-expression of ALDH1a2 gene and cell apoptosis are detected after either treatment with 5-Aza-dC alone or in combination with TSA.

Apoptosis ; drug effects ; Azacitidine ; pharmacology ; Cell Line, Tumor ; Gene Expression Regulation, Neoplastic ; Humans ; Hydroxamic Acids ; pharmacology ; Retinal Dehydrogenase ; metabolism ; Urinary Bladder Neoplasms ; metabolism ; pathology

Currently, image-based 3-dimentional (3D) planning brachytherapy allows for a better assessment of gross tumor volume (GTV) and the definition and delineation of target volume in cervix cancer. In this study, we investigated the feasibility of our novel computed tomography (CT)-guided free-hand high-dose-rate interstitial brachytherapy (HDRISBT) technique for cervical cancer by evaluating the dosimetry and preliminary clinical outcome of this approach. Dose-volume histogram (DVH) parameters were analyzed according to the Gynecological GEC-ESTRO Working Group recommendations for image-based 3D treatment in cervical cancer. Twenty cervical cancer patients who underwent CT-guided free-hand HDRISBT between March 2009 and June 2010 were studied. With a median of 5 (range, 4-7) implanted needles for each patient, the median dose of brachytherapy alone delivered to 90% of the target volume (D90) was 45 (range, 33-54) Gyα/β10 for high-risk clinical target volume (HR-CTV) and 30 (range, 20-36) Gyα/β10 for intermediate-risk clinical target volume (IR-CTV). The percentage of the CTV covered by the prescribed dose (V100) of HR-CTV with brachytherapy alone was 81.9%-99.2% (median, 96.7%). With an additional dose of external beam radiotherapy (EBRT), the median D90 was 94 (range, 83-104) Gyα/β10 for HR-CTV and 77 (range, 70-87) Gyα/β10 for IR-CTV; the median dose delivered to 100% of the target volume (D100) was 75 (range, 66-84) Gyα/β10 for HR-CTV and 65 (range, 57-73) Gyα/β10 for IR-CTV. The minimum dose to the most irradiated 2 cc volume (D2cc) was 73-96 (median, 83) Gyα/β3 for the bladder, 64-98 (median, 73) Gyα/β3 for the rectum, and 52-69 (median, 61) Gyα/β3 for the sigmoid colon. After a median follow-up of 15 months (range, 3-24 months), two patients experienced local failure, and 1 showed internal iliac nodal metastasis. Despite the relatively small number of needles used, CT-guided HDRISBT for cervical cancer showed favorable DVH parameters and clinical outcome.
Adenocarcinoma ; diagnostic imaging ; pathology ; radiotherapy ; Adult ; Brachytherapy ; adverse effects ; methods ; Carcinoma, Squamous Cell ; diagnostic imaging ; pathology ; radiotherapy ; Diarrhea ; etiology ; Disease-Free Survival ; Female ; Follow-Up Studies ; Humans ; Lymphatic Metastasis ; Middle Aged ; Neoplasm Staging ; Radiotherapy Dosage ; Remission Induction ; Survival Rate ; Tomography, X-Ray Computed ; Uterine Cervical Neoplasms ; diagnostic imaging ; pathology ; radiotherapy

Animals ; Arthritis, Rheumatoid ; blood ; drug therapy ; Drug Therapy, Combination ; Drugs, Chinese Herbal ; therapeutic use ; Interferon-gamma ; blood ; Phytotherapy ; Tumor Necrosis Factor-alpha ; metabolism

Objective To explore the protective mechanism of RNA binding protein LIN28 on diabetic nephropathy(DN).Methods LIN28 was overexpressed or knocked down by adenovirus in HEK 293T cells.The gene and functional signaling pathway significantly changed after overexpression of LIN28 were obtained through RNA Seq transcriptome sequencing and bioinformatics analysis.HEK 293T cells were divided into the Control group,the Treatment group,the Adv-LIN28-OE+D-ribose group and the Adv-LIN28-NC+D-ribose group in in vitro LIN28 overexpression studies.And HEK 293T cells were divided into the Control group,the Treatment group,the Adv-shRNA LIN28+D-ribose group and the Adv-shRNA NT+D-ribose group in in vitro LIN28 knockdown studies.ELISA was used to detect the levels of human advanced glycation end products(AGEs)of cells supernatants in the above groups.Western blot was used to detect the expression levels of RAGE,NF-κB and MMP-2 of cells in the above groups.Results The results of RNA-Seq transcriptome sequencing,GO analysis and KEGG analysis showed that overexpression of LIN28 resulted in a significant down-regulation of AGE-RAGE signaling pathway in HEK 293T cells(P<0.05).The results of ELISA showed that compared with the Control group,the cell in the Treatment group produced a large amount of AGEs(P<0.05);compared with the Treatment group,the AGEs level of cells in the Adv-LIN28-OE+D-ribose group was significantly decreased(P<0.05),while the AGEs level of cells in the Adv-shRNA LIN28+D-ribose group was increased(P>0.05).The results of Western blot showed that compared with the Control group,the expression levels of RAGE,NF-κB and MMP-2 of cells in the Treatment group were significantly increased(P<0.05);compared with the Treatment group,the expression levels of RAGE,NF-κB and MMP-2 of cells in the Adv-LIN28-OE+D-ribose group were significantly decreased(P<0.05),while the expression levels of RAGE,NF-κB and MMP-2 of cells in the Adv-shRNA LIN28+D-ribose group were significantly increased(P>0.05).Conclusion Overexpression of LIN28 by adenovirus at the cellular level in vitro can lead to significant differential expression of thousands of genes.In particular,it can inhibit the diabetes and complications-related AGE-RAGE signaling pathway,which is critical in the progression of DN disease,and play a role in protecting DN.

OBJECTIVE: To investigate the molecular epidemiological characteristics of common δβ-thalassemia/hereditary persistence of fetal hemoglobin(HPFH) in the prepregnant population in Huadu, and to provide a laboratory basis for prevention and control of thalassemia. METHODS: Blood samples of childbearing age people in Huadu District of Guangzhou who participated in free thalassemia testing from January 2016 to July 2021 were collected for hematological parameters analysis and hemoglobin electrophoresis. Chinese ^Gγ⁺(^Aγδβ)⁰-thalassemia, ^SEA-HPFH and Taiwanese deletion β-thalassemia were detected by Gap-PCR in the samples with higher HbF(≥5%). Primers were designed for the proximal HBG1 and HBG2 promoter, and the point mutations in the proximal promoter region were detected by Sanger sequencing. Hematology parameters data were statistically analyzed. RESULTS: Among 27 088 samples, Thirteen cases of Chinese ^Gγ⁺(^Aγδβ)⁰-thalassemia and thirty-three cases of ^SEA-HPFH were detected, which including 3 cases of Chinese ^Gγ⁺(^Aγδβ)⁰/β^N compounded with --^SEA/αα and three cases of ^SEA-HPFH/β^N compounded with --^SEA/αα. 6 carriers with ^Aγ-196 C>T were also detected; No Taiwanese thalassemia genetype was detected. The total detection rate of common δβ-thalassemia/HPFH was 0.19% (52/27 088). There were significant differences in the levels of MCV, MCH, HbA₂, and HbF among Chinese ^Gγ⁺(^Aγδβ)⁰-thalassemia, ^SEA-HPFH, ^Aγ-196 C>T (P<0.001). The hematological parameters of ^Aγ-196C>T combined with α⁰-thalassemia were similar to those of Chinese ^Gγ⁺(^Aγδβ)⁰-thalassemia carriers, and only HbA₂ was significantly lower than that of the latter, which was helpful for clinical identification. CONCLUSION δβ-thalassemia/HPFH should be included in the scope of thalassemia prevention program in the prepregnant population in Huadu District, and hematological parameters can provide some basis for identifying different types of δβ-thalassemia/HPFH.
Diagnosis, Differential ; Fetal Hemoglobin/genetics* ; Heterozygote ; Humans ; Thalassemia/genetics* ; beta-Thalassemia/genetics*