Objective To compare the three methods in intensity modulated radiation therapy(IMRT)dose verification using PTW Detector729.Methods A total of 50 patients with nasopharyngeal cancer,lung cancer,breast cancer,cervical cancer and whole brain radiation therapy who completed radiation treatment at some hospital from January to December 2022 were selected retrospectively.Two-dimensional(zero and actual gantry angles)and three-dimensional dose verifications were carried out for the IMRT plans using PTW Detector729 2D ionization chamber matrix combined with PTW RW3 solid water and PTW Ocavius 4D rotation unit.The dose assessment threshold was set to 10％,and the γ pass rates of the three verification methods were counted under four assessment criteria,namely 3％/1 mm,2％/2 mm,3％/2 mm and 3％/3 mm.SPSS 22.0 statistical software was used for data analysis.Results Under the 10％dose assessment threshold criterion,zero-gantry-angle 2D dose verification had the highest γ pass rate,and the differences were statistically significant(P＜0.05);actual-gantry-angle 2D dose verification had the γ pass rate higher than that of 3D verification,and the differences were statistically significant(P＜0.05).The γ pass rates of the three verification methods gradually increased under four criteria,namely,3％/1 mm,2％/2 mm,3％/2 mm and 3％/3 mm,and exceeded 90％under the 3％/2 mm criterion,and the results met the requirements of clinical radiotherapy.Conclusion The results of the three verification methods satisfy the requirements of the IMRT dose verification practice guidelines,and the selection of appropriate verification methods is of great significance to ensure the implementation of the treatment plan.[Chinese Medical Equipment Journal,2024,45(5):56-59]

Objective To investigate the efficacy and safety of Chinese herbal compound modified Huanglian Wendan Decoction in the treatment of hypertension complicated with sleep disorders of phlegm-heat harassing the interior type.Methods A total of 70 patients with hypertension complicated with sleep disorders of phlegm-heat harassing the interior type were randomly divided into a control group and an observation group,35 cases in each group.The patients in the control group were treated with conventional western medicine,and the patients in the observation group were treated with modified Huanglian Wendan Decoction on the basis of treatment for the control group.The course of treatment covered four weeks.The Clinical Global Impression(CGI)score,traditional Chinese medicine(TCM)syndrome score,Pittsburgh Sleep Quality Index(PSQI)score,blood pressure,and serum levels of homocysteine(Hey),interleukin 6(IL-6),interleukin 10(IL-10)and interleukin 8(IL-8)levels in the two groups were observed before and after treatment.Moreover,the safety of medication was evaluated in the two groups.Results(1)After four weeks of treatment,the CGI score of the observation group was(1.63±0.60)points,which was significantly lower than that of the control group[(2.74±0.82)points],and the difference was statistically significant(P＜0.01).(2)After treatment,the TCM syndrome score,systolic blood pressure,diastolic blood pressure and PSQI score of the two groups were significantly decreased compared with those before treatment(P＜0.01),and the decrease of TCM syndrome score,systolic blood pressure,diastolic blood pressure and PSQI score in the observation group was significantly superior to that in the control group(P＜0.05 or P＜0.01).(3)After treatment,the levels of serum Hcy,IL-6 and IL-8 in the two groups were significantly decreased compared with those before treatment(P＜0.01),and the serum IL-10 level was significantly increased compared with that before treatment(P＜0.01).The decrease of serum Hcy,IL-6 and IL-8 levels and the increase of serum IL-10 level in the observation group were significantly superior to those in the control group(P＜0.01).(4)During the treatment,no treatment-related adverse reactions or complications occurred in the two groups.Conclusion Modified Huanglian Wendan Decoction has certain efficacy on patients with hypertension complicated with sleep disorders of phlegm-heat harassing the interior type.The decoction can not only reduce the blood pressure and serum Hcy level of the patients,but also regulate the level of inflammatory factors with high safety.

Male ; Humans ; Germ-Line Mutation ; Prostatic Neoplasms/genetics* ; BRCA2 Protein/genetics* ; Genetic Predisposition to Disease

OBJECTIVES: To investigate the incidence of extrauterine growth retardation (EUGR) and its risk factors in very preterm infants (VPIs) during hospitalization in China. METHODS: A prospective multicenter study was performed on the medical data of 2 514 VPIs who were hospitalized in the department of neonatology in 28 hospitals from 7 areas of China between September 2019 and December 2020. According to the presence or absence of EUGR based on the evaluation of body weight at the corrected gestational age of 36 weeks or at discharge, the VPIs were classified to two groups: EUGR group (n=1 189) and non-EUGR (n=1 325). The clinical features were compared between the two groups, and the incidence of EUGR and risk factors for EUGR were examined. RESULTS: The incidence of EUGR was 47.30% (1 189/2 514) evaluated by weight. The multivariate logistic regression analysis showed that higher weight growth velocity after regaining birth weight and higher cumulative calorie intake during the first week of hospitalization were protective factors against EUGR (P<0.05), while small-for-gestational-age birth, prolonged time to the initiation of total enteral feeding, prolonged cumulative fasting time, lower breast milk intake before starting human milk fortifiers, prolonged time to the initiation of full fortified feeding, and moderate-to-severe bronchopulmonary dysplasia were risk factors for EUGR (P<0.05). CONCLUSIONS It is crucial to reduce the incidence of EUGR by achieving total enteral feeding as early as possible, strengthening breastfeeding, increasing calorie intake in the first week after birth, improving the velocity of weight gain, and preventing moderate-severe bronchopulmonary dysplasia in VPIs.
Female ; Fetal Growth Retardation ; Gestational Age ; Hospitalization ; Humans ; Incidence ; Infant ; Infant, Newborn ; Infant, Premature ; Infant, Very Low Birth Weight ; Prospective Studies ; Risk Factors

Objective To explore the effect of meteorological factors on the incidence of hand foot and mouth disease (HFMD) in Jiangyin City. Methods The distributed lag non-linear model (DLNM) was used to estimate the delayed and cumulative effects of meteorological factors on incidence of HFMD in Jiangyin from 2012 to 2017. Results A total of 21 791 HFMD cases were reported in Jiangyin City during 2012-2017. We observed significant correlations between the daily incidence of HFMD and daily mean temperature (rs=0.402, P<0.001), daily mean pressure (rs=-0.453, P<0.001), and daily mean relative humidity (rs=0.075, P<0.001), respectively. It was indicated that the maximum cumulative effect of daily mean temperature on the incidence of HFMD was 11 ℃ (RR=1.473, 95% CI: 1.99-1.974), and the impact on the onset of HFMD was acute and hightest at the first day (RR=1.090, 95% CI: 1.045-1.136). The cumulative effect on incidence of HFMD was highest at 85% daily relative humidity (RR=1.346, 95% CI: 1.154-1.571), and the impact on HFMD peaked on the 6th day (RR=1.023，95% CI: 1.015-1.031); The maximum cumulative effect of daily mean pressure with the incidence of HFMD was 1010.0 hpa (RR=1.221, 95% CI: 1.020-1.463), but no lag effect was observed at this level. Conclusions Meteorological factors have significant impact on the incidence of HFMD in Jiangyin City, and the effects of temperature and humidity are lagged.

To investigate the space-time patterns of schistosomiasis after the stage of transmission controlled in Hubei Province, so as to provide the reference for precise controlling.The data of human schistosomiasis cases in Hubei Province from 2015 to 2016 and basic information of human schistosomiasis cases and serum antibody titer of human schistosomiasis cases in 2016 were collected and analyzed. The spatial clustering of human schistosomiasis was detected by the Flexible spatial scan statistics and Kulldorff circular scan statistic, respectively.Totally 64 819 serological positive cases from 51 counties and 1 504 stool hatching positive cases from 17 endemic counties were reported in Hubei Province in 2015, and 39 365 serological positive cases were reported from 48 counties in 2016. All of them were identified as the research objects. No stool hatching positive cases were reported from the routine work in the whole province in 2016. There were 1 603 cases of the highest antibody titer (1∶80 or more), with the proportion of 4.07%. According to the results of Kulldorff spatial clustering analysis, there were eight and six spatial clustering areas in the distribution of serological positive cases and stool hatching positive cases in 2015, respectively. The numbers of spatial clustering areas in the distribution of serological positive cases and the cases of the highest antibody titer (1∶80 or more) were eight and five in 2016, respectively. According to the results of Flexible spatial clustering analysis, there were three and two spatial clustering areas in the distribution of serological positive cases and stool hatching positive cases in 2015, respectively. The numbers of spatial clustering areas in the distribution of serological positive cases and the cases of highest antibody titer (1∶80 or more) were two and one in 2016, respectively.The distribution of human schistosomiasis cases is not balanced, and there is spatial clustering in Hubei Province. So the key area for prevention and control is on the middle and lower reaches of the Yangtze River in the future.

OBJECTIVETo evaluate whether mono (2-ethylhexyl) phthalate (MEHP) affects genomic DNA methylation and the methylation status of some specific genes such as patched gene (PTCH) and smoothened gene (SMO) in LNCaP cells.

METHODSLNCaP cells were treated with MEHP (0, 1, 5, 10, and 25 μmol/L) for 3 days. An ELISA assay was preformed to detect genomic methylation, including 5-methylcytosine (5-mC) and 5-hydroxymethylcytosine (5-hmC) content. A pyrosequencing assay was applied to assess DNA methylation in PTCH and SMO gene promoters. The correlation between DNA methylation and gene expression was assessed.

RESULTSThe proportion of cytosines with 5-mC methylation in LNCaP cells was significantly decreased by MEHP (1, 5, 10, and 25 μmol/L) in a dose-dependent manner (P < 0.01). For genes in the Hedgehog pathway, there was no significant MEHP concentration-dependent difference in the DNA methylation of PTCH and SMO.

CONCLUSIONMEHP might affect the progression of prostate cancer through its effect on global DNA methylation.

Antineoplastic Agents ; chemistry ; pharmacology ; Cell Line, Tumor ; DNA Methylation ; Humans ; Male ; Phthalic Acids ; chemistry ; Prostatic Neoplasms ; metabolism

Objective Few studies are reported on the relationship of subclinical hypothyroidism ( SCHT ) with visfatin and endothelin .This study aimed to investigate their relationship in patients with cerebral infarction . Methods A total of 200 cerebral in-farction patients treated in The Second Affiliated Hospital of Hainan Medical University from January 2011 to July 2017 were divided in-to a control ( with normal thyroid function , n=40 ) , a mild SCHT ( with thyroid-stimulating hormone TSH <10 mIU/L, normal free triiodothyronine FT3 and normal free thyroxine FT4, n=60), a se-vere SCHT (with TSH≥10 mIU/L, normal FT3 and normal FT4, n=60) , and a clinical hypothyroidism ( CHT ) group ( with TSH ≥4 mIU/L, decreased FT3 and decreased FT4, n=40).The mild SCHT patients were subdivided into medication group A and non-medication group A, and the severe SCHT patients into medication group B and non-medication group B, 30 in each group, those in the medica-tion groups A and B treated by routine therapy plus oral levothyrocine , and those in the non-medication groups A and B by routine ther-apy only.We recorded the age, gender, body mass index, blood pressure, blood glucose, blood lipid, and thyroid function of the pa-tients, and compared the levels of visfatin and endothelin among different groups . Results The level of visfatin was significantly ele-vated in the severe SCHT and CHT groups as compared with the controls ([46.3±10.1] and [49.5±13.6] vs [40.2±9.7] ng/mL, P<0.05), and so was it in medication group B as compared with non-medication group B at 6 months after treatment ([42.9±6.4] vs [39.3±5.5] ng/mL, P<0.05). Conclusion Visfatin is closely related with thyroid hormone in cerebral infarction patients with se -vere subclinical hypothyroidism .Examination of thyroid function is necessary for cerebral infarction patients for the sake of early detec -tion of severe subclinical hypothyroidism and timely intervention .

Objective To study the effect of ghost red blood cells (GRBCs) on white blood cell (WBC)-mediated adhesion of tumor cells (TCs) on endothelial cells (ECs) in shear flow. Methods GRBCs with hematocrit (Hct) of 20% were added in the parallel plate flow chamber to observe changes in the number of tethered WBCs on ECs, the collision between TCs and adhesive WBCs, and the number of firmly adhered TCs at different shear rates of 62.5, 100, 200 s-1, respectively. Results GRBCs could increase the number of adhered WBCs on ECs and the collision between TCs and adhesive WBCs, and finally enhance the adhesion of TCs on ECs, especially at high shear rate (200 s-1). However, the adhesion efficiency of TCs was not significantly influenced by GRBCs. Conclusions GRBCs in shear flow can promote TC adhesion on ECs, and the research finding will provide a theoretical basis for cancer therapy.

Objective To study the different effects from different concentration ratios of polymorphonuclear neutrophil (PMN) to tumor cell (TC) on the process of tumor cell adhesion to endothelial cell (EC) in shear flow. Methods PMNs and TCs with different concentration ratios (PMN-TC ratio) were added into the parallel plate flow chamber, and changes in the numbers of transient and accumulative adhered TCs on ECs at different shear rates (50 s-1，100 s-1，200 s-1) were analyzed. Results The transient and accumulative adhesion of TCs on ECs at PMN-TC ratio of 3︰1 significantly increased as compared to that at PMN-TC ratio of 1︰1, especially under high shear flow condition (100 s-1 and 200 s-1). Moreover, in the 5 minute-observation period, the effect of PMN-TC ratio on TC adhered to ECs occurred earlier when the shear rate increased. Conclusions The increase of PMN-TC concentration ratio can promote TC adhesion to ECs in shear flow, and the research findings provide significant references for studying TC metastasis in blood vessels and the target therapy of tumors.