- 學位論文
醫院作業環境與飲食習慣對胃腸道大腸桿菌抗藥性程度之影響
The Effects of Working Environments and Dietary Habits on the Incidence of Antibiotic-resistant Escherichia coli Isolated from Human Feces
摘要
本研究在探討醫院作業環境、不同葷素的飲食習慣，是否對人體胃腸道中的Escherichia coli (E. coli) 抗藥性造成影響，選擇Penicillins、Aminoglycosides、第一、二、三代Cephalosporins、Quinolones、Tetracyclines、Phenicols、Sulfonamides、Carbapenems等不同類的抗生素做為研究並進行其抗藥性程度分析。在「醫院環境及醫療人員胃腸道之大腸桿菌抗藥性調查」研究，目的在瞭解醫院環境所存在的E. coli 是否具抗藥性及可能對醫療人員胃腸道E. coli 抗藥性的影響，選定內科加護病房(Medical Intensive Care Unit, MICU)為研究環境。分別各採集環境(31株)及醫療人員E. coli (41株)並對照病人臨床檢體分離E. coli (38株)進行各組間之抗藥性統計分析，結果發現：(1)從醫療人員分離E. coli 的抗藥性程度明顯低於環境採檢、臨床檢體 (P＜0.05)。(2)環境分離E. coli 的抗藥性程度明顯高於醫療人員、臨床檢體(P＜0.05)。(3)MICU醫療人員(29株)及非MICU醫療人員(11株)分別所分離的E. coli 抗藥性程度大多呈現沒有顯著差異(P ＞0.05)。初探顯示醫院環境應該不會影響醫療人員胃腸道E. coli的抗藥性程度；但在一般認為乾淨的區域卻可發現抗藥性E. coli，此結果應該被重視，結果顯示注意環境清潔的範圍必須概括加護病房的每個區域。 「不同飲食習慣對人體胃腸道E. coli之抗藥程度影響」研究，目的在探討人類可能經由不同的攝食途徑，造成抗藥性微生物進入體內，依照葷食、素食兩組的糞便收集，分別各採集有葷食(72株)、素食(37株)共109株E. coli 進行抗藥性程度統計分析。結果發現兩組對大多的抗生素的抗藥性並無顯著差異，僅對Gentamicin呈現顯著不同(P＜0.05)。對於環境與食物可能感染抗藥性E. coli 的來源，造成人體胃腸道E. coli抗藥性程度的影響因素，建議未來進一步找出根本原因，做為未來在醫政、藥政、食品衛生管理對抗生素之相關管制措施之參考依據。
並列摘要
Antibiotic-resistant bacteria can exist in hospital environments and the meat contents. The antibiotic resistance can also be transmitted among bacteria. The study is to explore to what extent hospital environments and dietary habits have effects on antibiotic-resistant Escherichia coli (E. coli) in gastrointestinal tract of humans. Antibiotics of Penicillins, Aminoglycosides, the first-, second- and third-generation Cephalosporins, Quinolones, Tetracyclines, Phenicols, Sulfonamides, and Carbapenems were used as the test antibiotics to proceed with the analysis of antibiotic-resistant degree. In chapter “Survey of Antibiotic-resistant E. coli in hospital environments and the gastrointestinal tract of healthcare workers“, the study is to explore whether E. coli existing in hospital environments was antibiotic-resistant, and to what extent E. coli may have an effect on the antibiotic-resistant E. coli in gastrointestinal tract of healthcare workers. We chose medical intensive care unit (MICU) as our research location. 31 samples from hospital environments, 41 samples from healthcare workers and 38 samples from clinical patients were collected to isolate the antibiotic-resistant E. coli, and the data were analyzed by chi-square test. The results showed that the antibiotic-resistant E. coli isolated from healthcare workers had lower antibiotic resistance than those from hospital environments and clinical patients (p<0.05); the antibiotic-resistant E. coli isolated from hospital environments had higher antibiotic resistance than those from healthcare workers and clinical patients. Therefore, the study demonstrated that hospital environments have no effect on the antibiotic-resistant E. coli in the gastrointestinal tract of healthcare workers. However, we should pay much attention that the antibiotic-resistant E. coli was found in the areas we thought to be clean, so routine and complete cleaning of every area in MICU are very important. In chapter “Effect of antibiotic-resistant E. coli existing in gastrointestinal tract of humans with different dietary habits“, the study is to explore that humans may acquire antibiotic-resistant bacteria through different dietary habits. We collected 72 samples from non-vegetarians and 37 samples from vegetarians to analyze the antibiotic resistance by chi-square test. The results were that both groups only had a significant difference on Gentamicin (p<0.05). In addition, both groups show no significant differences on other antibiotics. In conclusion, the study evaluated the potential risk of humans exposing in environments full of bacteria, and the effect on antibiotic-resistant differences from occupational environments and dietary habits. Our results can be contributed as guidelines to deal with the related executive measures of antibiotics in the future.
參考文獻
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