ABSTRACT
Objective To investigate the prevalence of Anisakis infections in coastal marine fishes and awareness of anisakiasis control knowledge among local residents in Yantai City, Shandong Province in 2021, so as to provide insights into formulation of anisakiasis control interventions. Methods Marine fishes were purchased from Shunxin Port, Yantai City, Shandong Province in November 2021, and the presence of Anisakis was detected in different species of fishes and different fish sites. The correlations between body length and weight of marine fish and intensity of Anisakis infections were examined using Spearman’s rank correlation analysis, and the dietary habits and anisakiasis control knowledge were investigated using questionnaire surveys among local residents. Results A total of 201 marine fishes belonging to 20 species were dissected, and Anisakis was detected in 77 marine fishes (38.31%) belonging to 11 species (55.00%), with a mean infection intensity of 45.04 parasites per fish (3 468/77). Spearman’s rank correlation analysis revealed that the body length (rs = 0.74, P < 0.05) and weight (rs = 0.79, P < 0.01) of the monkfish correlated positively with the intensity of Anisakis infections, and the body length (rs = 0.68, P < 0.05) of the flatfish correlated positively with the intensity of Anisakis infections, while no correlations were examined between the body length or weight of other marine fishes and the intensity of Anisakis infections. Of all respondents, 53.38% men and 56.67% women did not know anisakiasis control knowledge at all, and there was a significant difference in the proportion of respondents using separate chopping boards for raw and cooked food from different villages (χ2 = 17.89, P < 0.01), while there was an age-specific proportion of respondents with habitats of eating raw or semi-raw seafood (χ2 = 28.27, P < 0.01). Conclusions The prevalence and intensity of Anisakis infections were high in coastal marine fishes in Yantai City in 2021, and the awareness of anisakiasis control knowledge was low among local residents. Intensified health education pertaining to anisakiasis control knowledge is recommended to reduce the risk of Anisakis infections.
ABSTRACT
OBJECTIVE@#To determine the role of Tripterygium wilfordii multiglycoside (TGW) in the treatment of psoriatic dermatitis from a cellular immunological perspective.@*METHODS@#Mouse models of psoriatic dermatitis were established by imiquimod (IMQ). Twelve male BALB/c mice were assigned to IMQ or IMQ+TGW groups according to a random number table. Histopathological changes in vivo were assessed by hematoxylin and eosin staining. Ratios of immune cells and cytokines in mice, as well as PAM212 cell proliferation in vitro were assessed by flow cytometry. Pro-inflammatory cytokine expression was determined using reverse transcription quantitative polymerase chain reaction.@*RESULTS@#TGW significantly ameliorated the severity of IMQ-induced psoriasis-like mouse skin lesions and restrained the activation of CD45+ cells, neutrophils and T lymphocytes (all P<0.01). Moreover, TGW significantly attenuated keratinocytes (KCs) proliferation and downregulated the mRNA levels of inflammatory cytokines including interleukin (IL)-17A, IL-23, tumor necrosis factor α, and chemokine (C-X-C motif) ligand 1 (P<0.01 or P<0.05). Furthermore, it reduced the number of γ δ T17 cells in skin lesion of mice and draining lymph nodes (P<0.01).@*CONCLUSIONS@#TGW improved psoriasis-like inflammation by inhibiting KCs proliferation, as well as the associated immune cells and cytokine expression. It inhibited IL-17 secretion from γ δ T cells, which improved the immune-inflammatory microenvironment of psoriasis.
Subject(s)
Male , Animals , Mice , Tripterygium , Psoriasis/drug therapy , Keratinocytes , Skin Diseases/metabolism , Cytokines/metabolism , Imiquimod/metabolism , Dermatitis/pathology , Disease Models, Animal , Mice, Inbred BALB C , Skin/metabolismABSTRACT
Objective:To study the population distribution of Pomacea spp. in Shandong Province and the risk of angiostrongyliasis cantonensis in the local population, and to provide a basis for scientific prevention and control of related diseases. Methods:From July to December 2021, Yanzhou District of Jining City, Ningyang County of Taian City, and Dongying District of Dongying City were selected as surveillance sites to investigate the population and distribution range of Pomacea spp., live snail samples were collected for morphological and genetic identification, and Pomacea spp. infected with the larva of Angiostrongylus cantonensis was detected by lung test. At the same time, sentinel hospital case surveillance was carried out in Yanzhou District, Jining City, and questionnaire was used to study the local residents' awareness of angiostrongyliasis cantonensis and their personal health behaviors. Results:A total of 312 live snail samples were collected. After morphological identification, they were all Pomacea spp.. After gene sequencing, two populations of Pomacea canaliculata and Pomacea maculata were found. No positive snails infected with Angiostrongylus cantonensis were found. A total of 126 patients with headache as the main neurological symptom were admitted to the sentinel hospital, but there were no monitoring cases that met the inclusion criteria. Among the survey population, 48.38% (134/277) of the respondents had heard of angiostrongyliasis cantonensis, 44.77% (124/277) knew that eating Margarya melanioides might cause angiostrongyliasis cantonensis, and 83.39% (231/277) had no related unhealthy eating behavior. Conclusion:Pomacea spp. is found and reported for the first time in Shandong Province, and there is a risk of population infection with angiostrongyliasis cantonensis.
ABSTRACT
Integrative palliative care is the early intervention of palliative medicine for the patients with serious illness,jointly providing care with the patients' primary care team.By literature review and real-life experience study,we conclude that the integrative palliative care can make effective use of existing healthcare resources and provide the original treatment team with palliative medical technical support,thereby improving the patients' quality of life.The healthcare institutions need to choose an appropriate care model on the basis of evaluating its own strengths and weaknesses.The palliative care team needs to establish a long-term and sustainable relationship with each department in the hospital to provide patients with a safer and more effective medical experience.
Subject(s)
Humans , Palliative Care , Quality of Life , HospitalsABSTRACT
Objective:To synthesize N- 18F-fluoroethyl-tofacitinib, and explore its feasibility in the diagnosis of rheumatoid arthritis (RA). Methods:The " two-step method" was used to modify tofacitinib with 18F-fluoroethyl, and the labeling rate and radiochemical purity of the probe were measured by high performance liquid chromatography (HPLC), and the stabilities of the probe in vivo and in vitro were investigated. BALB/c mice (normal group; n=3) and collagen-induced arthritis (CIA) model mice (CIA group; n=3) were injected with N- 18F-fluoroethyl-tofacitinib and CIA model mice injected with tofacitirrib and N- 18F-fluoroethyl-tofacitinib were as blocking group ( n=3). All mice underwent microPET imaging and the percentage injection dose per gram of tissue (%ID/g) and the uptake ratio of inflamed joints to muscle (T/M) were calculated. One-way analysis of variance and the least significant difference (LSD) t test were used to analyze the data. Results:The synthesis time of N- 18F-fluoroethyl-tofacitinib was about 120 min, with the yield approximately 1%, the specific activity >13.6 GBq/μmol, and the radiochemical purity >99%. After the probe incubated with PBS, plasma or in vivo for 2 h, the radiochemical purity was still more than 95%. MicroPET imaging showed that 30 min after injection, the uptake of N- 18F-fluoroethyl-tofacitinib in the inflamed joints of CIA group was higher than that of normal group and blocking group ((10.22±1.64), (2.71±0.26) and (2.81±0.33) %ID/g; F=58.26, t values: 7.83, 7.67, P values: 0.001, 0.002). The T/M of CIA group was also higher than that of normal group and blocking group (24.73±5.77, 2.75±1.36 and 2.89±0.54; F=40.64, t values: 6.42, 6.53, P values: 0.003, 0.003). Conclusions:N- 18F-fluoroethyl-tofacitinib is successfully prepared and it is stable in vitro with good imaging performance in vivo. It may be used in clinic for the diagnosis of RA.
ABSTRACT
Objective: To explore the help seeking efficacy and social assistance willingness of medical staff during major public health events, so as to provide basis for improving the psychological resources and service quality of medical staff and further optimizing the prevention and treatment policies. Methods: In February 2020, a convenient sampling method was used to conduct an online questionnaire survey on medical staff in Henan Province, and a total of 2136 questionnaires were collected. Among them, there were 1940 valid questionnaires, and the effective recovery rate was 90.82%. The questionnaire of help seeking efficacy and willingness to social assistance under epidemic situation was used to investigate the help seeking efficacy and willingness of medical staff. The frequency and rate (%) were used to analyze the overall situation of medical staff's help seeking efficacy and social assistance willingness. The differences among different demographic variables were tested by χ(2) test. Results: Among the 1940 medical and nursing staff, 18.81% (365/1940) did not know how to obtain appropriate psychological assistance. Compared with the low age group, the medical staff in the high age group had the ability of information query, the ability to occupy knowledge resources, the ability to distinguish rumors and facts and the sense of efficacy of obtaining appropriate medical help, and the difference was statistically significant (P<0.05) . The willingness of medical and nursing staff to actively cooperate with the government, maintain social stability and volunteer work were 99.43% (1929/1940) , 98.81% (1917/1940) and 97.11% (1884/1940) . Conclusion: The medical staff had a higher sense of help seeking efficacy and willingness to social assistance. It is necessary to further strengthen the resource support of psychological, social and humanistic care for medical staff.
Subject(s)
Humans , Intention , Medical Staff , Organizations , Public Health , Surveys and QuestionnairesABSTRACT
Objective To investigate the prevalence and changing trend of Enterobius vermicularis infections among children in Shandong Province, so as to provide the scientific evidence for the adjustment and development of the enterobiasis control strategy. Methods Soil-borne nematodiasis surveillance sites were assigned in 51 counties (districts, cities) in Shandong Province from 2016 to 2020, and the E. vermicularis infections were detected using a modified Kato-Katz technique and the cellophane tape method among children at ages of 3 to 9 years living in these surveillance sites. The epidemiological profiles of E. vermicularis-infected children were descriptively analyzed. Results A total of 5 060 children at ages of 3 to 9 years were detected in 51 soil-borne nematodiasis surveillance sites in Shandong Province from 2016 to 2020, and the overall prevalence of E. vermicularis infections was 2.23%. The annual prevalence of E. vermicularis infections was 3.99% (26/651), 1.70% (14/824), 0.96% (8/837), 2.90% (45/1 552) and 1.67% (20/1 196) from 2016 to 2020, respectively, with a significant difference detected among years ( χ2 = 21.455, P < 0.01). The prevalence of E. vermicularis infections was 1.25% (15/1 198), 1.85% (14/755), 3.18% (84/2 640) and 0 (0/467) among children from central, eastern, southern and northern Shandong Province (χ2 = 27.326, P < 0.01). In addition, there was no significant difference in the prevalence of E. vermicularis infections between male (1.98%, 56/2 831) and female children (2.56%, 57/2 229) (χ2 = 1.916, P > 0.05); however, there was age-specific prevalence of E. vermicularis infections among children (χ2 = 16.448, P < 0.05), with the greatest prevalence detected among children at ages of 6 years (3.18%, 25/786), and the lowest prevalence seen among children at ages of 3 years (0.75%, 6/800). Conclusions The prevalence of E. vermicularis infections remained at a medium level among children at ages of 3 to 9 years in Shandong Province from 2016 to 2020, with region-specific prevalence found across the province. An integrated strategy is required for enterobiasis control.
ABSTRACT
ObjectiveTo investigate the drug-resistant gene polymorphisms in Plasmodium falciparum imported from Equatorial Guinea to Shandong Province. MethodsFrom 2015 to 2016, blood samples were collected from imported P. falciparum malaria patients returning from Equatorial Guinea to Shandong Province, and genome DNA of the malaria parasite was extracted. The drug-resistant Pfcrt, Pfmdr1, Pfdhfr, Pfdhps, and K13 genes of P. falciparum were amplified using a PCR assay, followed by DNA sequencing, and the sequences were aligned. Results The target fragments of all 5 drug-resistant genes of P. falciparum were successfully amplified and sequenced. There were 72.8%, 18.6%, and 8.6% of P. falciparum parasites carrying the wild-, mutant-, and mixed-type Pfcrt gene, respectively, and all mutant haplotypes were CVIET (the underline indicates the mutation site). There were 20.0%, 61.4% and 18.6% of P. falciparum parasites carrying the wild-, mutant-, and mixed-type Pfmdr1 gene, respectively, and the mutant haplotypes mainly included YF and NF (the underlines indicate the mutation sites). There were 1.4%, 98.6%, and 0 of P. falciparum parasites carrying the wild-, mutant-, and mixed-type Pfdhfr gene, respectively, and AIRNI was the predominant mutant haplotype (the underline indicates the mutation site). There were 1.4%, 94.3%, and 4.3% of P. falciparum parasites carrying the wild-, mutant-, and mixed-type Pfdhps gene, respectively, and SGKAA was the predominant mutant haplotype (the underline indicates the mutation site). The complete drug-resistant IRNGE genotype consisted of 8.6% of the Pfdhfr and Pfdhps genes, and the K13 gene A578S mutation occurred in 1.4% of the parasite samples. Conclusions There are mutations in the Pfcrt, Pfmdr1, Pfdhfr, Pfdhps, and K13 genes of P. falciparum imported from Equatorial Guinea to Shandong Province, with a low frequency in the Pfcrt gene mutation and a high frequency in the Pfmdr1, Pfdhfr, and Pfdhps gene mutations, and the K13 gene A578S mutation is detected in the parasite samples.
ABSTRACT
Objective To investigate the clinical features of non- functioning pancreatic neuroendocrine tumors and to summarize experiences in the diagnosis and treatment. Methods The clinical pathology and follow-up data of 20 patients with non-functioning pancreatic neuroendocrine tumors treated in Nanjing Drum Tower Hospital Affiliated to Medical School of Nanjing University, from January 2008 to February 2018 were retrospectively analyzed. Results Among the 20 patients, 9 patients (9/20) were asymptomatic, and the tumor was found unexpectedly by physical examination. Eleven patients (11/20) with symptoms were admitted to the hospital due to non-specific gastrointestinal symptoms or compression symptoms caused by tumor space occupying. None of the patients had endocrine disorders. There were nineteen patients who received surgical treatment. According to the grading system, there were 7 patients (7/19) with G1, and 12 patients (12/19) with G2 . Among the 14 patients with diameter of tumor greater than 2 cm, there are 4 patients (4/14) with lymph node metastasis, and 4 patients (4/14) with liver metastasis. Five patients with diameter of tumor less than or equal to 2 cm had no distant metastasis. Conclusions NF-pNETs is often with nonspecific symptoms. Imaging examination is an important diagnostic method. Operation is the primary therapy for NF-pNETs. Because most of the small NF-pNETs with no symptoms are benign and grow slowly, and the metastatic rate is very low. It is important to weigh the pros and cons of surgical treatment for these patients.
ABSTRACT
Objective To understand the malaria epidemiological characteristics of Shandong Province in 2017, so as to provide the evidences for formulating targeted prevention and control strategy and measures. Methods The data of malaria cases of Shandong Province in 2017 were collected from the Information Management System for Infectious Diseases Report and Information Management System for Parasitic Diseases Control and Prevention. The epidemiological characteristics of malaria situation and the diagnosis and treatment of malaria cases were analyzed. Results There were 209 malaria cases reported in 2017, all of them were imported cases, and 205 cases (98.09%) were imported from African countries. Among them, 155 cases (74.16%) were falciparum malaria cases. Totally 16 cities had cases reported in 2017, and 154 cases (73.68%) were reported in 6 cities (Yantai, Jining, Weihai, Dezhou, Qingdao, and Tai’an). The malaria cases distributed in 17 cities, and there were 110 cases distributed in 4 cities, namely Yantai, Tai’an, Weihai, and Qingdao, which accounted for 56.41% of the total cases in Shandong Province. Both the median time from onset to seeing a doctor and the median time from seeing a doctor to being diagnosed were one day. Totally 12.92% of the cases went to visit a doctor 7 days later after they had symptoms and 10.53% of the cases were diagnosed 7 days later after the first visit to a doctor. Conclusions At present, the prevention and control of the imported malaria is the focus of malaria control in Shandong Province. According to the central tendency of the malaria situation, the health education and propaganda among the high risk groups and the training on the diagnosis and treatment among medical workers should be strengthened, so as to prevent the risk of reappearance of local cases in the past malaria endemic regions, and to ensure the goal of malaria elimination been achieved on schedule.
ABSTRACT
Objective To understand the malaria epidemiological characteristics of Shandong Province in 2017, so as to provide the evidences for formulating targeted prevention and control strategy and measures. Methods The data of malaria cases of Shandong Province in 2017 were collected from the Information Management System for Infectious Diseases Report and Information Management System for Parasitic Diseases Control and Prevention. The epidemiological characteristics of malaria situation and the diagnosis and treatment of malaria cases were analyzed. Results There were 209 malaria cases reported in 2017, all of them were imported cases, and 205 cases (98.09%) were imported from African countries. Among them, 155 cases (74.16%) were falciparum malaria cases. Totally 16 cities had cases reported in 2017, and 154 cases (73.68%) were reported in 6 cities (Yantai, Jining, Weihai, Dezhou, Qingdao, and Tai’an). The malaria cases distributed in 17 cities, and there were 110 cases distributed in 4 cities, namely Yantai, Tai’an, Weihai, and Qingdao, which accounted for 56.41% of the total cases in Shandong Province. Both the median time from onset to seeing a doctor and the median time from seeing a doctor to being diagnosed were one day. Totally 12.92% of the cases went to visit a doctor 7 days later after they had symptoms and 10.53% of the cases were diagnosed 7 days later after the first visit to a doctor. Conclusions At present, the prevention and control of the imported malaria is the focus of malaria control in Shandong Province. According to the central tendency of the malaria situation, the health education and propaganda among the high risk groups and the training on the diagnosis and treatment among medical workers should be strengthened, so as to prevent the risk of reappearance of local cases in the past malaria endemic regions, and to ensure the goal of malaria elimination been achieved on schedule.
ABSTRACT
At present,there are no ideal drugs and measures in the treatment and prevention of toxoplasmosis.The develop-ment of safe,convenient,and strong protective nucleic acid vaccine is an important strategy for prevention and control of toxo-plasmosis.The rhoptry protein(ROP)is a large class of proteins secreted by Toxoplasma gondii.ROPs play an important role in the invasion of host cells,the formation of parsitophorous vacuole(PV)and the regulation of proliferation by T.gondii.Thus, ROPs become the most promising candidates of vaccine.In this paper,we summarize the important members of the ROPs,the expression vector and the immunogenicity and immunoprotection of the nucleic acid vaccine in animal experiments.
ABSTRACT
Objective To construct pEGFP-N1-HBsAg-ROP2 recombinant expression plasmid and transfect HEK293T cells for expression,and pay a way for Toxoplasma gondii nucleic acid vaccine development. Methods According to the HBsAg gene sequence and pcDNA3-p30-ROP2 recombinant plasmid restriction sites,the HBsAg gene was amplified by PCR.The HB-sAg gene was cloned into the pcDNA3-p30-ROP2 and instead of p30 gene.The HBsAg-ROP2 fragment was amplified by PCR and digested with HindⅢand KpnⅠto clone into the pEGFP-N1 eukaryotic expression vector and construct the recombinant pEGFP-N1-HBsAg-ROP2.The expression vector was transfected into HEK293T cells based on the identification of PCR amplifi-cation,restriction endonucleases and sequencing.Results The PCR product of HBsAg was about 700 bp,which was consis-tent with the theoretical value.Two bands of about 5.4 kb and 1.9 kb were obtained after double enzyme digestion with pcDNA3-HBsAg-ROP2 recombinant plasmid.The recombinant plasmid pEGFP-N1-HBsAg-ROP2 was double-digested to generate an empty vector fragment of about 4.7 kb and a band of about 1.9 kb of HBsAg-ROP2 fragment.The results of sequencing showed that the sequence was 99.84% identical with the published sequence in GenBank.The target plasmid was successfully transfect-ed into HEK293T cells,and the expression was correct,the protein concentration was 3.08 mg/ml.Conclusion The recombi-nant plasmid pEGFP-N1-HBsAg-ROP2 is successfully constructed and expressed efficiently.
ABSTRACT
Abstract: Introduction and aim. Hyponatremia is common in patients with decompensated cirrhosis and is associated with increased mortality. Tolvaptan, a vasopressor V2 receptor antagonist, can increase free wáter excretion, but its efficacy and safety in cirrhotic patients remain unclear. Material and methods. We studied the usage and safety of tolvaptan in cirrhotic patients in a real-life, non-randomized, multicenter prospective cohort study. Forty-nine cirrhotic patients with hyponatremia were treated with tolvaptan 15 mg daily, and 48 patients not treated with tolvaptan in the same period served as controls. Improvement in serum sodium level was defined as an increase in serum sodium from < 125 to ≥ 125 mmol/L or from 125-134 to ≥ 135 mmol/L on day 7. Results. Twenty-three (47%) patients in the tolvaptan group and 17 (35%) in the control group had normal serum sodium on day 7 (p = 0.25). Serum sodium improved in 30 (61%) patients in the tolvaptan group and 17 (35%) patients in the control group (p = 0.011). Adverse events occurred in 46-47% of patients in both groups, and tolvaptan was not associated with worsened liver function. No patient with normal serum sodium on day 7 died within 30 days of treatment, whereas 16% of those with persistent hyponatremia died (p = 0.0019). Conclusion. In conclusion, short-term tolvaptan treatment is safe and can improve serum sodium level in cirrhotic patients with hyponatremia. Normalization of serum sodium level is associated with better survival.
Subject(s)
Humans , Middle Aged , Aged , Sodium/blood , Benzazepines/therapeutic use , Antidiuretic Hormone Receptor Antagonists/therapeutic use , Hyponatremia/drug therapy , Liver Cirrhosis/complications , Time Factors , Benzazepines/adverse effects , Biomarkers/blood , Case-Control Studies , China , Prospective Studies , Risk Factors , Treatment Outcome , Kaplan-Meier Estimate , Antidiuretic Hormone Receptor Antagonists/adverse effects , Tolvaptan , Hyponatremia/etiology , Hyponatremia/mortality , Hyponatremia/blood , Liver Cirrhosis/diagnosis , Liver Cirrhosis/mortalityABSTRACT
Objective:To investigate the expression of interleukin-1 receptor associated kinase-M(IRAKM)in systemic lupus erythematosus ( SLE) and its relationship with immunoregulation .Methods:103 patients with SLE were divided into active stage group (n=55) and stable stage group(n=48) according to their disease activity score (SLEDAI),and 40 healthy persons were chosen as control group.Real-time quantitative PCR ( RT-PCR ) was used to detect the expression of IRAKM mRNA in peripheral blood monouclear cells of the three groups .The levels of anti ds-DNA antibody and anti Sm antibody in serum were detected by Enzyme linked immunosorbent assay(ELISA).The levels of serum complement C3 and C4 were measured by immune scattering turbidimetry .Factor analysis of variance was performed to analyze the differences of all the observed indicators in the three groups .The correlation between IRAKM and autoantibodies and complements of SLE was analyzed by Pearson or Spearman .Results: The expression level of IRAKM mRNA of SLE patients in the active stage group and stable stage group were significantly lower than that in the control group ( P<0.05).Moreover,the expression level of IRAKM mRNA in the active stage group was lower than that in the stable stage group ,and the difference was statistically significant ( P<0.05 ) .Compared with the control group , the levels of anti ds-DNA antibody and anti Sm antibody in the active stage group and stable stage group were significantly increased ( P<0.05 ) ,and the levels of complement C 3 and C4 were obviously lower(P<0.05).The changes of serum levels of autoantibodies and complements in the active stage group were more remarkable than those in the stable stage group ( P<0.05 ) .The expression level of IRAKM mRNA in the SLE patients was negatively correlated with the levels of anti ds-DNA antibody and anti Sm antibody (P<0.05).However,it was positively correlated with the levels of complement C3 and C4 ( P<0.05 ) .Conclusion: IRAKM participates in the immune regulation process of SLE through negative regulation,and its expression level is closely related to the degree of SLE disease activity .
ABSTRACT
The previous pharmacokinetic methods can be only limited to drug analysis in vitro, which provide less information on the distribution and metabolismof drugs, and limit the interpretation and assessment of pharmacokinetics, the determination of metabolic principles, and evaluation of treatment effect. The objective of the study was to investigate the pharmacokinetic characteristics of gene recombination angiogenesis inhibitor Kringle 5 in vivo. The SPECT/CT and specific 131I-Kringle 5 marked by Iodogen method were both applied to explore the pharmacokinetic characteristics of 131I-Kringle 5 in vivo, and to investigate the dynamic distributions of 131I-Kringle 5 in target organs. Labeling recombinant angio-genesis inhibitor Kringle 5 using 131I with longer half-life and imaging in vivo using SPECT instead of PET, could overcome the limitations of previous methods. When the doses of 131I-Kringle 5 were 10.0, 7.5 and 5.0 g/kg, respectively, the two-compartment open models can be determined within all the metabolic process in vivo. There were no significant differences in t1/2α, t1/2β, apparent volume of distribution and CL between those three levels. The ratio of AUC(0 ? 1) among three different groups of 10.0, 7.5 and 5.0 g/kg was 2.56:1.44:1.0, which was close to the ratio (2:1.5:1.0). It could be clear that in the range of 5.0–10.0 g/kg, Kringle 5 was characterized by the first-order pharmacokinetics. Approximately 30 min after 131I-Kringle 5 was injected, 131I-Kringle 5 could be observed to concentrate in the heart, kidneys, liver and other organs by means of planar imaging and tomography. After 1 h of being injected, more radionuclide retained in the bladder, but not in intestinal. It could be concluded that 131I-Kringle 5 is mainly excreted through the kidneys. About 2 h after the injection of 131I-Kringle 5, the radionuclide in the heart, kidneys, liver and other organs was gradually reduced, while more radionuclide was concentrated in the bladder. The radionuclide was completely metabolized within 24 h, and the distribution of radioactivity in rats was similar to normal levels. In our study, the specific marker 131I-Kringle 5 and SPECT/CT were suc-cessfully used to explore pharmacokinetic characteristics of Kringle 5 in rats. The study could provide a new evaluation platform of the specific, in vivo and real-time functional imaging and pharmacokinetics for the clinical application of 131I-Kringle 5.
ABSTRACT
Objective To construct a multi-gene recombinant pcDNA3-HBsAg-p30-ROP2 expression vector and identify it preliminarily. Methods According to recombinant pcDNA3-p30-ROP2 restriction sites,HBV HBsAg gene sequences of primers were designed and synthesized to amplify target fragment,and then cloned into pcDNA3-HbsAg-p30-ROP2 expression vector. Af-ter sequencing,it was identified finally by restriction enzyme digestion and other molecular biology techniques. Results HBV HBsAg gene segment was amplified by PCR and the multi-gene recombinant pcDNA3-HBsAg-p30-ROP2 expression vector was constructed and identified to be correct as theoretical values. The PCR and restriction enzyme digestion results showed that HBsAg and p30-ROP2 gene in recombinant plasmid were confirmed by DNA sequencing. Conclusion The multi-gene recombinant pcD-NA3-HBsAg-p30-ROP2 expression vector is successfully constructed.
ABSTRACT
<p><b>OBJECTIVE</b>To explore the clinical results of surgical treatment for old pelvic fractures with reconstruction plate.</p><p><b>METHODS</b>From February 2000 to February 2011, 24 patients with old pelvic fractures were treated with internal fixation with reconstruction plates. There were 10 males and 14 females, with an average age of 42 years (ranged, 20 to 62 years). The time from injury to operation was from 23 to 64 days with an average of 35 days. X-rays and CT scanning were performed in all patients. According to classification of Tile, Tile C was in 11 cases and Tile B was in 13 cases.</p><p><b>RESULTS</b>Eighteen patients were followed up for 6 to 48 months with an average of 24 months. According to Majeed criteria, 9 cases obtained excellent results, 5 good, 4 fair, with average score of (84.4 +/- 11.5).</p><p><b>CONCLUSION</b>Positively operative treatment, exactly preoperative evaluation, correctly reduction and fixation can obtain satisfactory results in treating old pelvic fractures.</p>
Subject(s)
Adult , Female , Humans , Male , Middle Aged , Young Adult , Bone Plates , Bone Screws , Fracture Fixation, Internal , Fractures, Bone , General Surgery , Pelvic Bones , Wounds and Injuries , General Surgery , Treatment OutcomeABSTRACT
Objective: To study the role of membrane-cytoskeleton linker Ezrin in the growth and metastasis of human colorectal carcinoma (CRC) cell lines. Methods: Human CRC cell lines Lovo and SW 480 were cultured. Three pairs of small interfering RNA (siRNA) targeting Ezrin were transfected into the CRC cells. Western blotting was used to detect the transfection rates so as to screen the most effective siRNA which had been transfected into the CRC cells. Real-time PCR and Western blotting were used to detect the downregulation of Ezrin mRNA and protein at different time points. We observed the biological behaviors of CRC cells when the expression level of Ezrin was the lowest. CCK-8 method was used to detect the proliferation of the cells. Flow cytometry was used to detect the cell cycle and apoptosis. Transwell test was used to detect the invasion and migration ability of the transfected CRC cells. Results: Real-time PCR and Western blotting results revealed that Ezrin siRNA notably down-regulated Ezrin expression at both mRNA and protein levels. Down-regulation of Ezrin expression distinctly decreased the proliferation rates of the two cell lines. After RNAi treatment, the cell proportion in S phase decreased slightly and the cell proportion in G1 phase increased slightly in the two cell lines (P > 0.05). The apoptotic index increased in the three siRNA transfected groups compared with the control group (P < 0.05). The migration and invasion ability of CRC cells significantly decreased after siRNA interference (P < 0.01). Conclusion: Ezrin plays an important role in the process of proliferation, migration, and invasion of CRC cells. It has the potential to become a new target to inhibit tumorigenesis and development of CRC.
ABSTRACT
<p><b>OBJECTIVE</b>To detect beta-catenin mRNA levels in sporadic colorectal cancers (SCRC) and adjacent normal colorectal mucosa, and to investigate the association between the beta-catenin mRNA level and its aberrant expression and clinicopathological parameters.</p><p><b>METHODS</b>The concentration of beta-catenin mRNA in 81 SCRCs and 28 adjacent normal colorectal mucosa specimens was determined by TaqMan real-time quantitative RT-PCR. The ratio of beta-catenin cDNA copies/GAPDH cDNA copies was used to represent the mRNA expression level in different tissues. The beta-catenin protein expression was determined by the EnVision two-step immunohistochemical method.</p><p><b>RESULTS</b>beta-catenin mRNA levels in SCRCs (2.527 +/- 2.284) were lower than those in the adjacent normal colorectal mucosa (5.003 +/- 3.326), P < 0.05. In addition, beta-catenin mRNA levels in lymph node-positive cases and tumors with ulcerative and infiltrating growth types were significantly lower (1.827 +/- 1.288, 2.202 +/- 2.035) than those in lymph node-negative cases and polypoid growth type tumors (3.359 +/- 2.881, 3.108 +/- 2.610), P < 0.05. No significant difference of beta-catenin mRNA level was found between cases with aberrant beta-catenin cytoplasm or nuclear expression and those without.</p><p><b>CONCLUSIONS</b>SCRCs express lower levels of beta-catenin mRNA than normal colorectal mucosa. Such lower level expression is associated with lymph node metastasis and tumors with ulcerative and infiltrative growth pattern. Aberrant cytoplasmic and nuclear expression of beta-catenin appears unrelated to the lower mRNA levels. Quantitative detection of beta-catenin mRNA may be a useful approach to monitor the biological behavior of SCRCs.</p>