CN102608306A - Method for detecting insecticide resistance of schistosoma japonicum eggs to praziquantel in vitro - Google Patents

Method for detecting insecticide resistance of schistosoma japonicum eggs to praziquantel in vitro Download PDF

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Publication number
CN102608306A
CN102608306A CN2011104273856A CN201110427385A CN102608306A CN 102608306 A CN102608306 A CN 102608306A CN 2011104273856 A CN2011104273856 A CN 2011104273856A CN 201110427385 A CN201110427385 A CN 201110427385A CN 102608306 A CN102608306 A CN 102608306A
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China
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praziquantel
ovum
drug
eggs
schistosoma
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CN2011104273856A
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汪伟
李洪军
梁幼生
曲国立
邢云天
戴建荣
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Jiangsu Institute of Parasitic Diseases
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Jiangsu Institute of Parasitic Diseases
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Abstract

The invention relates to a method for detecting insecticide resistance of schistosoma japonicum eggs to praziquantel in vitro, belonging to the technical field of antiparasitic drugs. The method comprises the following steps of: collecting 1,000-2,000 eggs from the feces of schistosoma japonicum infected hosts, respectively immigrating the 1,000-2,000 eggs in a flask of 50mL of normal saline containing praziquantel of 5*10-6mol/L and single control normal saline, and placing the eggs in the dark environment for 24h; then immigrating the eggs in fresh dechlorinated tap water, and hatching miracidia under irradiation of an incandescent bulb of 28 DEG C; after hatching starts, collecting tap water containing the miracidia for one time with a centrifuge tube of 50mL every 30 min; centrifuging after adding few drops of Lugol's iodine solution; collecting the miracidia, observing the miracidia under a microscope, counting, and calculating the hatching rate of eggs; setting normal saline control, and repeating for 3 times; detecting the insecticide resistance of the schistosoma japonicum eggs to praziquantel by observing the hatching rate of eggs. The method is fast, simple, convenient, sensitive and reliable and is suitable for fast detecting and monitoring the insecticide resistance of the schistosoma japonicum to praziquantel on site.

Description

A kind of vitro detection schistosoma japonice ovum is to the drug-fast method of praziquantel
Technical field
A kind of vitro detection schistosoma japonice ovum belongs to the anti-parasite medicine technical field to the drug-fast method of praziquantel.
Background technology
Japanese schistosomiasis is that a kind of harm humans is healthy, influences the serious infectious diseases of socio-economic development.Praziquantel is the current unique commercialization medicine that is used to treat Japanese schistosomiasis.Use repeatedly on a large scale with a kind of pest-resistant medicine for a long time and tend to cause the drug-fast generation of medicine, therefore be necessary to set up field monitoring and detect the drug-fast method of praziquantel.The drug-fast main method of current detection praziquantel is the on-scene care patient in the epidemic-stricken area, assessment chemotherapy result, and this method time is long, patient's succession is low, and exists the under-enumeration leakage to control phenomenon.We have set up a kind of vitro detection schistosoma japonice ovum to the drug-fast technology of praziquantel in the laboratory; Can be easily and fast, the responsive resistance to the action of a drug that detects schistosoma japonice ovum to praziquantel; Solved the technical barrier that the praziquantel resistance to the action of a drug is difficult to detect, helped field monitoring and detect the drug-fast generation of Schistosoma japonicum praziquantel.
Summary of the invention
The purpose of this invention is to provide a kind of vitro detection schistosoma japonice ovum to the drug-fast method of praziquantel, solve field monitoring and detect the drug-fast technical matters of Schistosoma japonicum praziquantel, quick, easy, responsive, reliable.
Technical scheme of the present invention: get two 50 mL flasks, immigration contains 5 * 10 respectively -6The physiological saline of mol/L praziquantel and single contrast physiological saline, 1000 ~ 2000 worm's ovums will from schistosoma japonicum infection host ight soil, collecting join and contain 5 * 10 -6In the flask of the physiological saline of mol/L praziquantel and single contrast physiological saline, put 24 h in 28 ℃ of dark surrounds, after worm's ovum is moved in the fresh dechlorination tap water; Miracidium is hatched in 28 ℃ of incandescent lamp irradiations down; Per 30 min in hatching beginning back collect the tap water that contains miracidium for 1 time with 50 mL centrifuge tubes, add after the several Lugol's iodine solutions centrifugally, and miracidium is examined under a microscope and counts in collection; Calculate the egg hatch rate; Experiment repetition 3 times through observing the egg hatch rate, detects the resistance to the action of a drug of schistosoma japonice ovum to praziquantel.
Egg hatch rate: the ratio of the miracidium number that miracidium number that the schistosoma japonice ovum of handling through praziquantel hatches and the schistosoma japonice ovum that soaks through physiological saline hatch.
The praziquantel soup is that praziquantel is dissolved in that to be mixed with concentration in 1% dimethyl sulfoxide (DMSO) (DMSO) be 1 * 10 -3Mol/L and water diluted for use.
It is formulated that physiological saline is that 9 g sodium chloride are dissolved in the 1000 mL distilled water.
Lugol's iodine solution is that 5% iodine, 10% potassium iodide and dechlorination water are formulated.
A kind of vitro detection schistosoma japonice ovum adds in 50 mL flasks earlier and contains 5 * 10 the drug-fast method of praziquantel -6The normal saline solution of mol/L praziquantel, 1000 ~ 2000 worm's ovums will from schistosoma japonicum infection host ight soil, collecting add in the solution, put and place 24 h in 28 ℃ of dark surrounds; After worm's ovum is moved in the fresh dechlorination tap water, the irradiation of 28 ℃ of incandescent lamps is the hatching miracidium down, hatching beginning per 30 min in back contain the tap water of miracidium for 1 time with the collection of 50 mL centrifuge tubes; Add after the several Lugol's iodine solutions centrifugal; Collect miracidium and examine under a microscope and count, calculate the egg hatch rate, the physiological saline contrast is established in experiment; Repeat 6 times, 5 * 10 -6Behind mol/L praziquantel soup effect 24 h, schistosoma japonice ovum Fu Huashuai>0, think that promptly this schistosoma japonice ovum has the resistance to the action of a drug to praziquantel.
Beneficial effect of the present invention: a kind of vitro detection schistosoma japonice ovum is to the drug-fast method of praziquantel; Fast, easy, responsive, reliable; Be fit to field quick detection and the drug-fast generation of monitoring Schistosoma japonicum praziquantel, can solve the technical matters of on-the-spot detection of the Schistosoma japonicum praziquantel resistance to the action of a drug and monitoring.
Embodiment
Embodiment 1: Schistosoma japonicum praziquantel sensitive strain worm's ovum is to the sensitivity testing of praziquantel
Get two 50 mL flasks, immigration contains 5 * 10 respectively -6The physiological saline of mol/L praziquantel and single with reference to physiological saline; 1000 ~ 2000 worm's ovums to from the sensitive strain infection host ight soil of Schistosoma japonicum Sichuan, collecting join in the flask; Put 24 h in 28 ℃ of dark surrounds; After worm's ovum is moved in the fresh dechlorination tap water, the irradiation of 28 ℃ of incandescent lamps is the hatching miracidiums down.Per 30 min in hatching beginning back collect the tap water that contains miracidium for 1 time with 50 mL centrifuge tubes, add after the several Lugol's iodine solutions centrifugally, and the collection miracidium is examined under a microscope and counts, calculating egg hatch rate.Experiment repetition 3 times.The result shows, at warp 5 * 10 -6Behind mol/L praziquantel effect 24 h, the incubation rate of Sichuan sensitive strain worm's ovum is 0.
Embodiment 2: Schistosoma japonicum praziquantel sensitive strain worm's ovum is to the sensitivity testing of praziquantel
Get two 50 mL flasks, immigration contains 5 * 10 respectively -6The physiological saline of mol/L praziquantel and single with reference to physiological saline; 1000 ~ 2000 worm's ovums to from the sensitive strain infection host ight soil of Schistosoma japonicum Anhui, collecting join in the flask; Put 24 h in 28 ℃ of dark surrounds; After worm's ovum is moved in the fresh dechlorination tap water, the irradiation of 28 ℃ of incandescent lamps is the hatching miracidiums down.Per 30 min in hatching beginning back collect the tap water that contains miracidium for 1 time with 50 mL centrifuge tubes, add after the several Lugol's iodine solutions centrifugally, and the collection miracidium is examined under a microscope and counts, calculating egg hatch rate.Experiment repetition 3 times.The result shows, at warp 5 * 10 -6Behind mol/L praziquantel effect 24 h, the incubation rate of Anhui sensitive strain worm's ovum is 0.
Embodiment 3: Schistosoma japonicum praziquantel sensitive strain worm's ovum is to the sensitivity testing of praziquantel
Get two 50 mL flasks, immigration contains 5 * 10 respectively -6The physiological saline of mol/L praziquantel and single with reference to physiological saline; 1000 ~ 2000 worm's ovums to from the sensitive strain infection host ight soil of Schistosoma japonicum Hunan, collecting join in the flask; Put 24 h in 28 ℃ of dark surrounds; After worm's ovum is moved in the fresh dechlorination tap water, the irradiation of 28 ℃ of incandescent lamps is the hatching miracidiums down.Per 30 min in hatching beginning back collect the tap water that contains miracidium for 1 time with 50 mL centrifuge tubes, add after the several Lugol's iodine solutions centrifugally, and the collection miracidium is examined under a microscope and counts, calculating egg hatch rate.Experiment repetition 3 times.The result shows, at warp 5 * 10 -6Behind mol/L praziquantel effect 24 h, the incubation rate of Hunan sensitive strain worm's ovum is 0.
Embodiment 4: Schistosoma japonicum praziquantel sensitive strain worm's ovum is to the sensitivity testing of praziquantel
Get two 50 mL flasks, immigration contains 5 * 10 respectively -6The physiological saline of mol/L praziquantel and single with reference to physiological saline; 1000 ~ 2000 worm's ovums to from the sensitive strain infection host ight soil of Schistosoma japonicum Jiangsu, collecting join in the flask; Put 24 h in 28 ℃ of dark surrounds; After worm's ovum is moved in the fresh dechlorination tap water, the irradiation of 28 ℃ of incandescent lamps is the hatching miracidiums down.Per 30 min in hatching beginning back collect the tap water that contains miracidium for 1 time with 50 mL centrifuge tubes, add after the several Lugol's iodine solutions centrifugally, and the collection miracidium is examined under a microscope and counts, calculating egg hatch rate.Experiment repetition 3 times.The result shows, at warp 5 * 10 -6Behind mol/L praziquantel effect 24 h, the incubation rate of Jiangsu sensitive strain worm's ovum is 0.
Embodiment 5: Schistosoma japonicum praziquantel resistant strain worm's ovum is to the sensitivity testing of praziquantel
Get two 50 mL flasks, immigration contains 5 * 10 respectively -6The physiological saline of mol/L praziquantel and single with reference to physiological saline; 1000 ~ 2000 worm's ovums to from the resistant strain infection host ight soil of Schistosoma japonicum Jiangsu, collecting join in the flask; Put 24 h in 28 ℃ of dark surrounds; After worm's ovum is moved in the fresh dechlorination tap water, the irradiation of 28 ℃ of incandescent lamps is the hatching miracidiums down.Per 30 min in hatching beginning back collect the tap water that contains miracidium for 1 time with 50 mL centrifuge tubes, add after the several Lugol's iodine solutions centrifugally, and the collection miracidium is examined under a microscope and counts, calculating egg hatch rate.Experiment repetition 3 times.The result shows, at warp 5 * 10 -6Behind mol/L praziquantel effect 24 h, the incubation rate of Jiangsu resistant strain worm's ovum is (11.2 ± 3.5) %.
Embodiment 6: Schistosoma japonicum praziquantel resistant strain worm's ovum is to the sensitivity testing of praziquantel
Get two 50 mL flasks, immigration contains 5 * 10 respectively -6The physiological saline of mol/L praziquantel and single with reference to physiological saline; 1000 ~ 2000 worm's ovums to from the resistant strain infection host ight soil of Schistosoma japonicum Hunan, collecting join in the flask; Put 24 h in 28 ℃ of dark surrounds; After worm's ovum is moved in the fresh dechlorination tap water, the irradiation of 28 ℃ of incandescent lamps is the hatching miracidiums down.Per 30 min in hatching beginning back collect the tap water that contains miracidium for 1 time with 50 mL centrifuge tubes, add after the several Lugol's iodine solutions centrifugally, and the collection miracidium is examined under a microscope and counts, calculating egg hatch rate.Experiment repetition 3 times.The result shows, at warp 5 * 10 -6Behind mol/L praziquantel effect 24 h, the incubation rate of Hunan resistant strain worm's ovum is (17.5 ± 6.7) %.

Claims (6)

1. a vitro detection schistosoma japonice ovum is characterized in that getting two 50 mL flasks to the drug-fast method of praziquantel, moves into respectively to contain 5 * 10 -6The physiological saline of mol/L praziquantel and single contrast physiological saline, 1000 ~ 2000 worm's ovums will from schistosoma japonicum infection host ight soil, collecting move into respectively and contain 5 * 10 -6In the flask of the physiological saline of mol/L praziquantel and single contrast physiological saline; Put 24 h in 28 ℃ of dark surrounds, after worm's ovum is moved in the fresh dechlorination tap water, the irradiation of 28 ℃ of incandescent lamps is the hatching miracidiums down; Hatching beginning per 30 min in back collect the tap water that contains miracidium for 1 time with 50 mL centrifuge tubes; Add after the several Lugol's iodine solutions centrifugally, collect miracidium and examine under a microscope and count, calculate the egg hatch rate; If the physiological saline contrast repeats 3 times,, detect the resistance to the action of a drug of schistosoma japonice ovum to praziquantel through observing the egg hatch rate.
2. ask 1 described vitro detection schistosoma japonice ovum to the drug-fast method of praziquantel according to right power; It is characterized in that the egg hatch rate, the ratio of the miracidium number that miracidium number that the schistosoma japonice ovum of handling through praziquantel hatches and the schistosoma japonice ovum that soaks through physiological saline hatch.
3. ask 1 described vitro detection schistosoma japonice ovum to the drug-fast method of praziquantel according to right power, it is characterized in that the praziquantel soup is that praziquantel is dissolved in that to be mixed with concentration among the 1% dimethyl sulfoxide (DMSO) DMSO be 1 * 10 -3Mol/L and water diluted for use.
4. ask 1 described vitro detection schistosoma japonice ovum to the drug-fast method of praziquantel according to right power, it is formulated to it is characterized in that physiological saline is that 9 g sodium chloride are dissolved in the 1000 mL distilled water.
5. ask 1 described vitro detection schistosoma japonice ovum to the drug-fast method of praziquantel according to right power, it is characterized in that Lugol's iodine solution is that 5% iodine, 10% potassium iodide and dechlorination water are formulated.
Like claim 1,2,3 or 4 described vitro detection schistosoma japonice ovums to the drug-fast method of praziquantel, it is characterized in that in 50 mL flasks, adding earlier containing 5 * 10 -6The normal saline solution of mol/L praziquantel, 1000 ~ 2000 worm's ovums will from schistosoma japonicum infection host ight soil, collecting add in the solution, put and place 24 h in 28 ℃ of dark surrounds; After worm's ovum is moved in the fresh dechlorination tap water, the irradiation of 28 ℃ of incandescent lamps is the hatching miracidium down, hatching beginning per 30 min in back contain the tap water of miracidium for 1 time with the collection of 50 mL centrifuge tubes; Add after the several Lugol's iodine solutions centrifugal; Collect miracidium and examine under a microscope and count, calculate the egg hatch rate, the physiological saline contrast is established in experiment; Repeat 6 times, 5 * 10 -6Behind mol/L praziquantel soup effect 24 h, schistosoma japonice ovum Fu Huashuai>0, think that promptly this schistosoma japonice ovum has the resistance to the action of a drug to praziquantel.
CN2011104273856A 2011-12-20 2011-12-20 Method for detecting insecticide resistance of schistosoma japonicum eggs to praziquantel in vitro Pending CN102608306A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105385686A (en) * 2015-12-15 2016-03-09 中国人民解放军军事医学科学院基础医学研究所 Improved LAMP method-based schistosoma japonicum katsurada nucleic acid detection kit and method
CN106172263A (en) * 2016-08-31 2016-12-07 江苏省血吸虫病防治研究所 A kind of semi-automatic human excrement schistosoma japonice ovum hatching apparatus and hatching method thereof

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
李伟等: "《日本血吸虫虫卵杀灭剂筛选及快速杀灭技术的研究 I化学杀卵剂的筛选》", 《中国血吸虫病防治杂志》 *
梁幼生等: "《血吸虫对吡喹酮抗药性的研究 II曼氏血吸虫吡喹酮敏感株与抗性株虫卵和毛蚴对吡喹酮的反应性》", 《中国血吸虫病防治杂志》 *
梁幼生等: "《血吸虫对吡喹酮抗药性的研究XI日本血吸虫中国大陆现场分离株虫卵 毛蚴 尾蚴对吡喹酮的敏感性》", 《中国血吸虫病防治杂志》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105385686A (en) * 2015-12-15 2016-03-09 中国人民解放军军事医学科学院基础医学研究所 Improved LAMP method-based schistosoma japonicum katsurada nucleic acid detection kit and method
CN105385686B (en) * 2015-12-15 2019-03-22 中国人民解放军军事医学科学院基础医学研究所 A kind of Schistosoma japonicum kit for detecting nucleic acid and detection method based on improvement LAMP method
CN106172263A (en) * 2016-08-31 2016-12-07 江苏省血吸虫病防治研究所 A kind of semi-automatic human excrement schistosoma japonice ovum hatching apparatus and hatching method thereof
CN106172263B (en) * 2016-08-31 2021-12-21 江苏省血吸虫病防治研究所 Semi-automatic human-excrement schistosoma japonicum egg hatching device and hatching method thereof

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Application publication date: 20120725