Objective To compare the Cosine and Dip methods in describing the rhythm of blood pressure(BP).Methods The BP was measured with non-traumatic ambulatory blood pressure monitoring(ABPM) for 24 h and analyzed with Cosine and Dip methods.The characters of the circadian rhythm of BP were studied and two methods were compared.Results The ratios of mesor and amplitude(A/M) of systolic blood pressure(SBP) and diastolic blood pressure(DBP) were(7.78?0.42)% and(7.98?0.39)%,respectively.The majority of acrophases of BP was on daytime,especially between 10∶00 am and 3∶00 pm.The amplitudes of acrophase in different periods analyzed with Cosine method were not significantly different each other,whereas analyzed with Dip method to be significant difference.Conclusion There is difference between Cosine and Dip methods in describing the rhythm of BP,since rhythms of acrophases of some cases were inaccurately described with Dip method.

Adolescent ; Adult ; Aged ; Aged, 80 and over ; Child ; Child, Preschool ; Female ; Humans ; Infant ; Intraoperative Complications ; Male ; Middle Aged ; Postoperative Complications ; Retrospective Studies ; Tracheotomy ; adverse effects ; methods ; Young Adult

Aim To investigate whether EGCG regu-lates ABCA1 expression by influencing the expression of miR-33 a to promote cholesterol efflux from macro-phages. Methods THP-1 macrophage-derived foam cells were established by co-incubated with oxLDL, and then treated with EGCG, and miR-33a expression was detected with Real-time PCR. THP-1 macrophage-derived foam cells were randomly divided into the fol-lowing groups: control group, 50 μmol · L-1 EGCG treatment group, 50 μmol · L-1 EGCG +80 nmol · L-1 miR-33a mimic treated group. Real-time PCR and Werstern blot was used to detect ABCA1 mRNA and protein expression, Oil Red O staining and high per-formance liquid chromatography were used to detect in-tracellular lipid content, and [3H] assay was used to determine cellular cholesterol efflux. Results EGCG could downregulate miRNA33 a expression in a dose-and time-dependent fashion within safe doses. EGCG significantly upregulated ABCA1 mRNA and protein expression, which could be inhibited after miRNA33 mimic transfected into cells, however. EGCG may re-duce lipid accumulation in THP-1 macrophage-derived foam cells, and this effect could also be weakened after miRNA33 mimic transfected. EGCG could reduce the accumulation of intracellular cholesterol,which was re-lated with EGCG promoting intracellular cholesterol ef-flux , and excess miRNA33 a transfected into cells could inhibit intracellular cholesterol efflux. Conclusion EGCG may upregulate ABCA1 expression by reducing miRNA33a generation, resulting in the promotion of cholesterol efflux from macrophages, which may be one of the molecular mechanisms of EGCG anti-atheroscle-rotic effect.

Objective To study the step aceuracy of 252Cf neutron afterloading radiotherapy machine and the dose deviation caused by step deviation.Methods EBT3 film was used to measure the steps of the 252Cf neutron source,and then the center of each 252Cf neutron source was identified by measuring the optical density value by using the ImageJ software.Double ion chambersmethod was used to measure the dose deviation dlue to the 252 Cf neutron source position shift.Results 252 Cf neutron source step accuracy may amount to 0.01 mm using EBT3 film measurement,when 252Cf neutron source position deviation is less than 3 mm,the dose deviation is less than 2.5％.Conclusions The study on the step accuracy and position deviation of the 252Cf neutron source can provide a reference for the quality control standard of the 252Cf neutron afterloading radiotherapy machine.

Abstract: Objective　To analyze the laboratory indexes of patients infected with malaria patients and COVID-19, so as to provide reliable evidence for the diagnosis of mixed infection of both. Methods　The routine clinical laboratory items such as routine blood, biochemistry and lymphocyte subsets were tested in three cases of COVID-19 complicated with falciparum malaria who admitted to Guangzhou Eighth People's Hospital Affiliated to Guangzhou Medical University from July to December 2020 were tested. Laboratory data were stage-wise analyzed in conjunction with changes in the course of disease. Results　Three patients confirmed COVID-19 infection recruited all had malaria infection history. Fever, headache, and other symptoms emerged on the 4rd to 11th day after admission. Malaria parasite was detected by malaria parasite antigen testing and blood smear testing, and all three patients had re-ignition of malaria after being confirmed COVID-19 infection. In the early stage of malaria relapse, lymphocytes decreased, CRP and SAA increased, and gradually returned to normal level after antimalarial treatment. Interestingly, we only found one patient at the initial stage of malaria detection showed PLT decreased, no other unnormal changes in other routine blood results (WBC, ESO) and liver function results (ALT, AST, GGT, TBIL, DBIL, CG) were found from the beginning to end course of the disease. Conclusion　COVID-19 infection may promote the resurgence of malaria, so the relapse of malaria should be monitored especially for the patient with malaria infection history who begin to develop fever and other symptoms a few days after the diagnosis of COVID-19. The inflammatory indicators would be worth able as an auxiliary judgment basis for the effective treatment of the two combined infection.

Objective: To compare the inhibitory effect of carmustine(BCNU) and bleomycin on craniopharyngiomas in vitro. Methods: Cells were successfully cultured in vitro from the fresh specimens, then the culture medium with bleomycin or BCNU at different concentration was added. The tumor inhibitory curve-line was drawn based on the cell number at different time points. After cultured for 144 h, ATP-luminescence assay was applied to test the antitumor effect. Results: The cell number decreased rapidly when the medium was added. The decreasing speed was faster in BCNU medium than that in bleomycin medium at the same concentration. The bleomycin medium showed no significant inhibitory effect except for the one at 1.00 g/L. However, regardless of the concentration, BCNU medium inhibited the cells effectively. Conclusion: BCNU has stronger inhibitory effect on craniopharyngiomas cells than bleomycin, it can be used to treat this tumor

Objective To discuss the effects of bacille calmette guerin(BCG) alone of combined with interferon gamma(IFN-?) and vitamin A in preventing asthma after bronchiolitis.Methods Fourty-four bronchiolitis infants(RBI) were treated with BCG alone or combined with vitamin A/IFN-?.Protein purified derivative(PPD) skin test were observed before and 3 months after interference and all infants enrolled in the study were followed up for average one year to observe the wheezing episodes. Ninteen cases of RBI without BCG treatment were control group.Results The average diameter of PPD skin test in RBI after BCG inoculation was significantly larger than that of before inoculation and control group(P

Objective To study changes of aspartate(ASP) and glutamaic acid(GLU) in cerebral cortex of neonatal Sprague-Dawely(SD) rats after hypoxia-ischemia and nitric oxide synthase(NOS) immunoactive expression in cerebral neurons were examined to explore mailuoning′s protective effect on hypoxia-ischemia brain damage(HIBD).Methods The HIBD model was established as follows.The right common carotids of the neonatal SD rats 7 days were temporaily ligatured for 1 hour.Then the neonatal SD rats were exposed to 8% oxygen and 92% nitrogen gas mixture for 2 hours. The ASP and GLU were determined in right cerebral cortex using chromatograph,compared with sham-operated group and mailuoning administrated. Ultrastructure changes of neurons in the right cerebral cortex of neonatal SD rats were observed after sham-operated,hypoxia-ischemia and mailuoning administrated using electronmicroscope.Results The level of excitatory amino acid was promoted in right cerebral cortex after hypoxia-ischemia.The volume of excitatory amino acid was reduced sharply mailuoning administrated. Ultrastructure of neurons in the cerebral cortex showed serious injure after hypoxia-ischemia and ultrastructure of neurons in the cerebral cortex appeared slight damage.Conclusion Mailuoning may possess protective effects to the neurons after hypoxia-ischemia through supplying blood to neurons reducing release of excitatory amino acid.

Bronchogenic Cyst ; pathology ; surgery ; Diagnosis, Differential ; Gastrectomy ; methods ; Humans ; Male ; Middle Aged ; Stomach Diseases ; pathology ; surgery

OBJECTIVETo observe the effect of Kanli Granule (KG) on myocardial mechanics in pressure overload induced diastolic heart failure (DHF) rats.

METHODSTotally 60 male Wistar rats were divided into the sham-operation group, the model group, the KG group, and the Valsartan group according to random digit table, 15 in each group. The pressure overload induced DHF model was established in all groups except the sham-operation group using abdominal aortic constriction surgery. Totally 7 rats died after modeling (with the mortality of 10. 67%) , and the rest 53 finished the following test. Rats in the KG group were administered with KG extract (calculated as 6. 75 g crude drug/kg) by gastrogavage. Rats in the Valsartan group were administered with Valsartan (7.2 µg/g) by gastrogavage. Equal volume of double distilled water was administered to rats in the model group and the sham-operation group by gastrogavage. All rats were intervened for 32 weeks. The response of isolated heart papillary muscle tonus to isoprenaline (ISO) and adenylate cyclase (Forskolin) was respectively observed. The enhancement phenomenon after resting development force (DF) of isolated heart papillary muscle tonus, and changes of DF in different Ca²⁺ concentrations were observed.

RESULTS(1) In the ISO response test: Compared with the sham-operation group, the amplifications of DF, ±df/dt, -df/dt were obviously elevated in the model group (P < 0.05). Compared with the model group, the amplifications of DF and ±df/dt were obviously lowered in the KG group (P < 0.01), and the amplification of ±df/dt was also reduced in the Valsartan group (P < 0.01). (2) In the Forskolin response test: Compared with the sham-operation group, the amplifications of DF and ±df/dt obviously increased in the model group (P < 0.05). Compared with the model group, the amplifications of DF and ±df/dt were obviously reduced in the KG group (P < 0.01), and the amplification of DF was also reduced in the Valsartan group (P < 0.05). (3) In post-resting DF enhancement test: Compared with the sham-operation group, the amplification of DF showed gradually decreasing tendency along with prolonged resting time in the model group, and they were obviously lowered at all time points (P < 0.05). Compared with the model group, the amplification of DF was gradually increasing along with prolonged resting time in the KG group. The amplification of DF at post-resting 240 s was obviously larger in the KG group than in the model group (P < 0.05). The amplification of post-resting DF still showed gradually decreasing tendency along with prolonged resting time in the Valsartan group, with increased amplifications of DF at post-resting 60 s and 120 s (P < 0. 05) (4) The amplifications of DF in different Ca²⁺ concentrations: Compared with the sham-operation group, the amplifications of DF were significantly elevated in different Ca²⁺ concentrations (1.75, 3.5, 7.0 mmol/L ) (P < 0.05, P < 0.01). Compared with the model group, there was no statistical difference in amplification of DF in different Ca²⁺ concentrations in the KG group (P > 0.05). The amplifications of DF in different Ca²⁺ concentrations were significantly reduced in the Valsartan group (P < 0.05).

CONCLUSIONSThe ISO response and the Forskolin response were enhanced in isolated heart papillary muscle tonus of pressure overload induced DHF rats; enhanced post-resting DF was reduced; DF in different supra-physiologic levels of Ca²⁺ was still enhanced. KG could significantly improve excessive enhancement of pressure overload induced DHF rats in ISO response and Forskolin response, and improve enhancement of post-resting myocardium.

Animals ; Colforsin ; pharmacology ; Drugs, Chinese Herbal ; pharmacology ; Heart ; drug effects ; physiopathology ; Heart Failure, Diastolic ; drug therapy ; Isoproterenol ; pharmacology ; Male ; Random Allocation ; Rats ; Rats, Wistar