Objective To investigate oxidative DNA damage in pharmacy technicians preparing antineoplastic drugs at the PIVAS (Pharmacy Intravenous Admixture Service) in two Chinese hospitals. Methods Urinary 8-OHdG served as a...Objective To investigate oxidative DNA damage in pharmacy technicians preparing antineoplastic drugs at the PIVAS (Pharmacy Intravenous Admixture Service) in two Chinese hospitals. Methods Urinary 8-OHdG served as a biomarker. 5-Fluorouracil (5-FU) concentrations in air, masks and gloves were determined. The spill exposure of each PIVAS technician to antineoplastic drugs was investigated. Eighty subjects were divided into exposed group t, II, and control group I, II. Results 5-FU concentration ratios for gloves and masks in exposed group I were significantly higher than those in exposed group II (P〈0.05 or P〈0.01). The average urinary 8-OHdG concentrations in exposed group I, control group I, exposed group II, and control group II were 24.69+0.93, 20.68+1.07, 20.57+0.55, and 12.96_+0.73 ng/mg Cr, respectively. Urinary 8-OHdG concentration in exposed group I was significantly higher than that in control group I or that in exposed group 11 (P〈0.02). There was a significant correlation between urinary 8-OHdG concentrations and spill frequencies per technician (P〈0.01). Conclusion There was detectable oxidative DNA damage in PIVAS technicians exposed to antineoplastic drugs. This oxidative DNA damage may be associated with their spill exposure experience and contamination of their personal protective equipment.展开更多
To broaden the applications of magnetized water(MW) in medical science, the possible detoxicative effect of MW to anticancer drugs in vivo were studied. After being given ip with cyclophosphomide (CTX) 500 mg...To broaden the applications of magnetized water(MW) in medical science, the possible detoxicative effect of MW to anticancer drugs in vivo were studied. After being given ip with cyclophosphomide (CTX) 500 mg/kg, cisplatin (DDP) 40 mg/kg, harringtonine (HA) 20 mg/kg, mitomycin C (MMC) 8 mg/kg, lycobetaine (Lyc) 200 mg/kg, respectively, the mice were given MW ip 0.2 ml for 7 days. The average life span was calculated for each group. After being given subacutely lower doses of anticancer drugs ( CTX 100 mg/kg, HA 3 mg/kg ) ip 3 times, the mice were given MW ip 0.2 ml for 7 days and the blood white cells were counted as routine. It was shown that the mice in MW groups after ip anticancer drugs survived longer than those without MW. The effects of various anticancer drugs on life span were different. The white cell numbers of groups with MW were higher than that of the groups without MW. So it is possible that MW can remarkably extend the life span of mice and attenuate the leukopenia by mitigating the toxicity of anticancer drugs in vivo .展开更多
Objective:To explore the relationships between Chinese nurses’knowledge,perceptions,and attitudes and their behavior and actual implementation of safety measures when handling antineoplastic drugs(ADs)in their daily ...Objective:To explore the relationships between Chinese nurses’knowledge,perceptions,and attitudes and their behavior and actual implementation of safety measures when handling antineoplastic drugs(ADs)in their daily work.Methods:This was a multisite study conducted in 8 public hospitals in China.A self-administered questionnaire was sent to par ticipants querying the degree of contact with ADs.The hypothesized relations were explored using structural equation modelling via the bootstrap method.Mediation analysis was applied to explore the mediating role of protective knowledge regarding AD exposure on the associations among protective training,using warning labels,and using protective masks.Results:A total of 305 nurses were enrolled.The average age of all par ticipants was 30.2(standard deviation[SD]:6.2)years.Nurses who had received protective training for AD exposure were more likely to use labels for ADs after age,body mass index(BMI),length of service,marital status,education,and department were controlled as covariates.The bias-corrected bootstrap of 95%confidence interval(CI)indicated that protective knowledge significantly mediated(23.4%)the association between protective training and using labels(indirect effect=0.202,95%CI:0.009,0.495);the proportion of mediation was 23.4%.Protective knowledge significantly mediated the association between protective training and using protective masks(indirect effect=0.157,95%CI:0.048,0.325);the propor tion of mediation was 27.2%.Conclusions:The findings of this study have provided baseline information on the current state of Chinese nurses’perceptions,knowledge,and preventive behaviors toward ADs as the crisis is happening.Training is also recommended to improve nurses’perceptions of the risks associated with ADs.展开更多
The various fibroproliferative disorders affecting humans have in common excess fibroblast activity and persistent overexpression or dysregulated activity of transforming growth factor beta (TGF-β). Cancer has many s...The various fibroproliferative disorders affecting humans have in common excess fibroblast activity and persistent overexpression or dysregulated activity of transforming growth factor beta (TGF-β). Cancer has many similar characteristics. Antineoplastic drugs can downregulate fibroblast activity and cytokine growth factors. This study evaluates the effect of six antineoplastic drugs on keloid and Dupuytren’s disease fibroblasts. Keloid, normal scar, Dupuytren’s affected palmar fascia, and normal palmar fascia fibroblasts were grown and seeded into Fibroblast Populated Collagen Lattices (FPCLs). The FPCLs were treated with one of six antineoplastic drugs or left untreated as controls. At 7 days, supernatants were extracted from all FPCLs and assayed for expression of Transforming Growth Factor beta (TGF)-β<sub>1</sub> and TGF-β<sub>2</sub>. All six antineoplastic drugs significantly inhibited FPCL contraction in both fibroproliferative conditions compared with the untreated controls (p β<sub>1</sub> and TGF-β<sub>2</sub> expression was downregulated in the supernatants of all FPCLs by the drug exposure. Cytotoxicity did not occur in these studies and was not the reason for the results. Although antineoplastic drugs can have significant side effects when given systemically, these results may be minimized when given to small areas involved in fibroproliferative scarring or when given topically or intralesionally. These in vitro results suggest that antineoplastic drugs may have a utility for treating various fibroproliferative disorders and warrant further investigation.展开更多
Non-compaction cardiomyopathy is a rare form of cardiomyopathy;its most common clinical manifestations are heart failure (HF), ventricular arrhythmia, thromboembolism, and sudden cardiac death. We report a rare case o...Non-compaction cardiomyopathy is a rare form of cardiomyopathy;its most common clinical manifestations are heart failure (HF), ventricular arrhythmia, thromboembolism, and sudden cardiac death. We report a rare case of a 63-year-old man with chest tightness, worsening lower leg edema, dyspnea, and decreased exercise tolerance. He had a medical history of gastric cancer treated with subtotal gastrectomy and post-operative chemotherapy with paclitaxel and fluorouracil three years ago. At that time, he was diagnosed with non-compaction cardiomyopathy, and the thickened and reticulated trabecular muscle was exclusively confined to left ventricular apex. Five months ago, he was admitted to our hospital with heart failure and treated for dilated cardiomyopathy, echocardiography revealed severe trabecular noncompact myocardium in both ventricles, which was confirmed by cardiac magnetic resonance imaging (CMR). It is generally accepted that non-compacted myocardium forms in the early embryonic stage, which raises a question in our case whether acquired factors, such as antineoplastic drugs, potentially accelerate the pathological progression of non-compaction cardiomyopathy. Considering there are disparities between current screening tools such as echocardiography and CMR regarding diagnostic criteria, multi-detector CT may be an alternative examination method that could provide a new perspective for diagnosis.展开更多
基金supported by the Scientific Research Fund of Health Bureau in Zhejiang Province (2009A089)Scientific Research Fund of Education Bureau in Zhejiang Province (Y200804934)
文摘Objective To investigate oxidative DNA damage in pharmacy technicians preparing antineoplastic drugs at the PIVAS (Pharmacy Intravenous Admixture Service) in two Chinese hospitals. Methods Urinary 8-OHdG served as a biomarker. 5-Fluorouracil (5-FU) concentrations in air, masks and gloves were determined. The spill exposure of each PIVAS technician to antineoplastic drugs was investigated. Eighty subjects were divided into exposed group t, II, and control group I, II. Results 5-FU concentration ratios for gloves and masks in exposed group I were significantly higher than those in exposed group II (P〈0.05 or P〈0.01). The average urinary 8-OHdG concentrations in exposed group I, control group I, exposed group II, and control group II were 24.69+0.93, 20.68+1.07, 20.57+0.55, and 12.96_+0.73 ng/mg Cr, respectively. Urinary 8-OHdG concentration in exposed group I was significantly higher than that in control group I or that in exposed group 11 (P〈0.02). There was a significant correlation between urinary 8-OHdG concentrations and spill frequencies per technician (P〈0.01). Conclusion There was detectable oxidative DNA damage in PIVAS technicians exposed to antineoplastic drugs. This oxidative DNA damage may be associated with their spill exposure experience and contamination of their personal protective equipment.
文摘To broaden the applications of magnetized water(MW) in medical science, the possible detoxicative effect of MW to anticancer drugs in vivo were studied. After being given ip with cyclophosphomide (CTX) 500 mg/kg, cisplatin (DDP) 40 mg/kg, harringtonine (HA) 20 mg/kg, mitomycin C (MMC) 8 mg/kg, lycobetaine (Lyc) 200 mg/kg, respectively, the mice were given MW ip 0.2 ml for 7 days. The average life span was calculated for each group. After being given subacutely lower doses of anticancer drugs ( CTX 100 mg/kg, HA 3 mg/kg ) ip 3 times, the mice were given MW ip 0.2 ml for 7 days and the blood white cells were counted as routine. It was shown that the mice in MW groups after ip anticancer drugs survived longer than those without MW. The effects of various anticancer drugs on life span were different. The white cell numbers of groups with MW were higher than that of the groups without MW. So it is possible that MW can remarkably extend the life span of mice and attenuate the leukopenia by mitigating the toxicity of anticancer drugs in vivo .
基金supported by the Shenzhen Municipal Health and Family Planning Commission System Key Discipline Building Capacity Improvement Project(No.201606053)the Science and Technology Joint funding Project of Zunyi Medical University of Zunyi Science and Technology Bureau(NO.[2020]38)the Project of philosophy and Social Science Planning of Zhuhai City 2021-2022(NO.[2021]YBA037)。
文摘Objective:To explore the relationships between Chinese nurses’knowledge,perceptions,and attitudes and their behavior and actual implementation of safety measures when handling antineoplastic drugs(ADs)in their daily work.Methods:This was a multisite study conducted in 8 public hospitals in China.A self-administered questionnaire was sent to par ticipants querying the degree of contact with ADs.The hypothesized relations were explored using structural equation modelling via the bootstrap method.Mediation analysis was applied to explore the mediating role of protective knowledge regarding AD exposure on the associations among protective training,using warning labels,and using protective masks.Results:A total of 305 nurses were enrolled.The average age of all par ticipants was 30.2(standard deviation[SD]:6.2)years.Nurses who had received protective training for AD exposure were more likely to use labels for ADs after age,body mass index(BMI),length of service,marital status,education,and department were controlled as covariates.The bias-corrected bootstrap of 95%confidence interval(CI)indicated that protective knowledge significantly mediated(23.4%)the association between protective training and using labels(indirect effect=0.202,95%CI:0.009,0.495);the proportion of mediation was 23.4%.Protective knowledge significantly mediated the association between protective training and using protective masks(indirect effect=0.157,95%CI:0.048,0.325);the propor tion of mediation was 27.2%.Conclusions:The findings of this study have provided baseline information on the current state of Chinese nurses’perceptions,knowledge,and preventive behaviors toward ADs as the crisis is happening.Training is also recommended to improve nurses’perceptions of the risks associated with ADs.
文摘The various fibroproliferative disorders affecting humans have in common excess fibroblast activity and persistent overexpression or dysregulated activity of transforming growth factor beta (TGF-β). Cancer has many similar characteristics. Antineoplastic drugs can downregulate fibroblast activity and cytokine growth factors. This study evaluates the effect of six antineoplastic drugs on keloid and Dupuytren’s disease fibroblasts. Keloid, normal scar, Dupuytren’s affected palmar fascia, and normal palmar fascia fibroblasts were grown and seeded into Fibroblast Populated Collagen Lattices (FPCLs). The FPCLs were treated with one of six antineoplastic drugs or left untreated as controls. At 7 days, supernatants were extracted from all FPCLs and assayed for expression of Transforming Growth Factor beta (TGF)-β<sub>1</sub> and TGF-β<sub>2</sub>. All six antineoplastic drugs significantly inhibited FPCL contraction in both fibroproliferative conditions compared with the untreated controls (p β<sub>1</sub> and TGF-β<sub>2</sub> expression was downregulated in the supernatants of all FPCLs by the drug exposure. Cytotoxicity did not occur in these studies and was not the reason for the results. Although antineoplastic drugs can have significant side effects when given systemically, these results may be minimized when given to small areas involved in fibroproliferative scarring or when given topically or intralesionally. These in vitro results suggest that antineoplastic drugs may have a utility for treating various fibroproliferative disorders and warrant further investigation.
文摘Non-compaction cardiomyopathy is a rare form of cardiomyopathy;its most common clinical manifestations are heart failure (HF), ventricular arrhythmia, thromboembolism, and sudden cardiac death. We report a rare case of a 63-year-old man with chest tightness, worsening lower leg edema, dyspnea, and decreased exercise tolerance. He had a medical history of gastric cancer treated with subtotal gastrectomy and post-operative chemotherapy with paclitaxel and fluorouracil three years ago. At that time, he was diagnosed with non-compaction cardiomyopathy, and the thickened and reticulated trabecular muscle was exclusively confined to left ventricular apex. Five months ago, he was admitted to our hospital with heart failure and treated for dilated cardiomyopathy, echocardiography revealed severe trabecular noncompact myocardium in both ventricles, which was confirmed by cardiac magnetic resonance imaging (CMR). It is generally accepted that non-compacted myocardium forms in the early embryonic stage, which raises a question in our case whether acquired factors, such as antineoplastic drugs, potentially accelerate the pathological progression of non-compaction cardiomyopathy. Considering there are disparities between current screening tools such as echocardiography and CMR regarding diagnostic criteria, multi-detector CT may be an alternative examination method that could provide a new perspective for diagnosis.