Download - Clostrodium Botulinum
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Company
LOGO
GVHD:ThS oHng HSVTH: Nhm 3 3
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Clostridium botulinum l g?
C.botulinum l vi khun Gram+ chai u trn, thng hin din trongmi sinh, t ct, rau qu, tht v c.Khi iu kin pht trin tr nn khkhn, vk s chuyn sang dng bo t
c th chu ng c nhit cao, c bit l trong mi trng cdu... C. botulinum pht trin ddng trong iu kin m v khngoxy hay ym kh hon ton. Trong
lc tng trng, bo t sn sinh ramt loi c t cc mnh. Ngi tangh rng ch cn mt mung cfc t thi cng sc git cht100.000 ngi.
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Nidung chnh
1. Tng quan v Clostridium botulinum.2. cimca vi sinh vt clostridium
botulinum.3. Bnh sinh v cc tnh nng lm sng.4. Phn lp v nhndng.
5. Hiphithcphm.KT LUN
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1. Tngquanv Clostridium botulinum.
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1.1. Lchsphthinkhun Clostridiumbotulinum
Xuthinlnutin vo nm1793 Wildbad, Wurttemburg trong mtloi xcxch.
Nm 1986 Van Ermengem GS vi trnghcgiy l vi khunbotulinus.
V sau cn pht hin trong c thi, utrngnghp.
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2. cimca vi sinhvtclostridium botulinum
cim hnh thi
cimcu trc
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2.1. Phnloi.
C 6 loictc xc nh, phn btA n G.
Loi A, B, E: ngc nguy him, tc ngln hthngthn kinh, gy chtngi.
Loi A, B, E, F: gy bnh ngi; C, D:gy bnh b, chim v cc ngvt khc
Loi A thngthy chu M, loiB
chu u, loiE NhtBn.
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Nhm I Nhm II Nhm III Nhm IVCc loict A, B, F B, E, F C1,C2, D GPhn gii Protein C Khng Khng CPhn gii Lipid C C C KhngPhn gii Saccharose C C C Khng
Psychrotrophic
(t0mintngtrng)Khng
(10120C)C
(3-50C)Khng
(150C) (120C)Scchcamui
(aw)10%
(0.94)5%
(0.075)3% > 3%
itng gy bnh Con ngi Con ngi ngvt v chim Con ngi
ctgen Nhimscth Nhimscth bacteriophage plasmidClose relative C.sporogennes
C. putrificumC. butyricum
C.beijerinickiiC.haemolyticum
C.novy type AC.subterminale
C.haemolyticumBnnhit C
(cht 1210C, 0.1-
0.25 pht)
Khng
(cht 800C, 0.6-3.3
pht)
2.2.Phn nhm..
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- L cc vi khunGram dng,hnh que.
- Sngk khbtbuc.
- Sinh bo t.
- Phnln l ding.
- C ththy phnng v Protein.
- Mtsanhit,mtsalnh
- Cc loi gy ngc quan trng:C.botulinum,C.perfringens
2.3. cim chung..
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2.3.1. cim hnh thi.
pH tia
Khongt8.5 8.9 Cc chtc khng bn pH ny
pH tithiuPhthucnhiu vo t0, aw, acid
iuchnh pH Gi tr vo khong 4.7
pH
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2.3.1. cim hnh thi
- Nhit 30 3700C: c kh
nng sinh ctbolutin ccc
- 10 1200C: ctto thnhbchmli
- 4 500C: qu trnh ngng
hn
Nhit
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2.3.1. cim hnh thi
Phn b
Khpni trongt
Cc loi rau,qu, mt ong
Trong rutngi v ng
vt
Pht trinmnhtrong thcphm:hp, xc xch,c pmui,
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Cu trct bo
- Hnh que, di 2 - 10
- Di ngvi tim mao
v lng nhung
- Bo thnh budc
trung tm hoc hnhti, kch thc to hnchiu ngang catbo
2.3.2. cimcu trc
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Vi khun gy ngcthng lC.botulinum loi A v B.Pht trinthunli t0 : 26 280C, sc
chungvi t0 cao km, bo tbnvinhit.
Pht trintt trong mi trnglng.Cch: Vi khun xm nhp vo thcn,
pht trin v sinh ct. nphithcnnhimcsbnhimct, gy ngc.
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Thi gian bnh: 6 24h.
Duhiu lm sn chyu l t litthn
kinh do tnthngthn kinh trung ngv hnh ty
Duhiu 2: c sphn ly mch v nhit
3.2. Triuchnglm sng.
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3.3. Ccloibnhngc.
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3.3.1. Ngcthcphm
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3.3.1. Ngcthcphm.
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3.3.1. Ngcthcphm.
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3.3.2. Ngctrssinh.
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3.3.2. Ngctrssinh.
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3.3.2. Ngctrssinh.
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3.3.3. Ngcdovtthng.
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3.3.3. Ngcdovtthng.
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3.3.3. Ngcdovtthng.
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4. Phnlp vnhndng.
C. botulinum thngchimmttlnh trongtngsVSV cn lm giu trc khi lm thcnghim.
Xl mu
80oC trong10p
lm giu v tochng
C.botulinum trong mtmtr nclucthtnuchn 30oC cho 7 ngy
nui cy trn mungatihoc lng
trng c b sungagar v ym kh
trong 3 ngy
kim tra csnxutctkhng
khunlcmn, 2-3mm, ngknh vimtcnhbtthngv cho thyhot phn giilypid trong lng trng trnmi trngthch (loi G ngoi
l)
Mtrncdng
Trngthi
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4. Phnlp vnhndng.
MtKthutcngin ho bngcch kthpthuc khng c vo mitrngthchsnxutct, khunlcc bao quanh bimt khu vcca cc
khng ctv lm kttavict.
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4. Phnlp vnhndng.
MU
gia nhit100oC ivi 10
pht tiu ditbtkchtc
iutrvitrypsin kch
hotbtkprotoxin
khng
ciutr
Tim vo
mngbngchut
quan st hn 4 ngy cho s pht trincatriu
chngin hnh, hithnhcxuthin
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4. Phnlp vnhndng.
Shindincactc xc nhnbng cch bovchutanngvithuckhng c v loictc thc xc
nhbng cch sdngntr khng
huyt thanh.
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5. Hiphithcphm.
1
2
3
4
Bncimnh gi snhimc Clostridium Botulinum trongthcphm l:
bnhimtu hay trong qu trnh chbin do cc bothoct bo sinh dngca Clostridium Botulinum.
b phn hy do cc vsv cnh tranh, cho nn trong iukin bnh thng nn kim sot Clostridium Botulinum.
nhit, pH, hotcanc, toiukinthunli cho s pht trinca Clostridium Botulinum
Thcphm sau khi x l nhitnh khng v
hiu ha ct.
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5. Hiphithcphm.
hp b phng 2 u np, mo m chothybnhim C.botulinum.
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5. Hiphithcphm.
Mtr axit thpca sp hp th vk rts phttrin nn kim sot nghim ngtbom anton.
hpc sx theo quy m nh trong nc thqu trnh kim tra nhm gip pht hin v ngnngammbnhchacphbinrng ri.
Tnm 1899- 1991 c 522 vngc do hp gy ra, c 432 v lin quan n rau. Anh,nhiuvngc hng lotxy ra do sdngsnphmhpca cc h gia nh.
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5. Hiphithcphm.
Ngc Chu u ( sTh/nm)1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998a
Belgium 0 2 1 0 1 1 0 0 1 3 1Denmark 0 0 0 0 0 0 0 2 0 0 1England and Wales 0 27 0 0 0 1 1 0 0 0 2Finland 0 0 0 0 0 0 0 0 0 0 0
France 4 6 11 3 5 10 13 7 5 8 NAGermany 39 15 15 23 4 17 13 11 12 9 19Greece 0 0 0 0 0 0 0 0 0 0 0Italy 53 54 45 12 26 39 26 41 58 32 26Scotland 0 0 0 0 0 0 0 0 0 0 0Spain 8 8 10 5 12 9 7 6 7 9 11
Sweden 0 0 1 2 0 0 2 1 1 0 0The Netherlands 0 0 0 0 0 0 0 0 0 0 0
a January October.NA not available
Data for Austria, Ireland and Portugal not available
Adpated from Eurosurveillance, vol. 4, Jan 1999
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5. Hiphithcphm.
C c th nhim C. botulinum (c bit l loi E)tiu dit chng.
- Nngmuitithiu l 3% v nhit xungquanh khng di63oC trong sutqu trnh hunkhi, snphm nn cboqundi4oC.
Gianhitbngppsy
cchcamui
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5. HiPhithcphm
Nm 1960, hai dch bnh ng c loi E Bc M xy ra do sdng c hun khicng gi bng bao b ht chn khng.Nguyn nhn gy nn cc vngc l doc boqun trong chn khng, tao iukinym khthunli cho C.botulinum pht
trinmnh.
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5. Hiphithcphm.
MT S NG DNG
- Botulinum loi A iutrmtsbnhrilonvnngca chuyn khoa thn kinh, chuyn khoa
khc nhmt, tai mihng, thmm, titniu.
- Ktnm 2003, iutr cc chnglontrnglcbngctbotulin ca vo ngdngti
khoa thn kinh caBnhViniHc Y Dc TpHCM v bcupngtt nhu cuiutr
cangi dn v nhm bnh ny..
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Ktlun
Clostridium botudium l mt trong nhngnhm vi sinh vt gy bnh trong thcphm v l nguyn nhn gy ra hng lot
tvong cho con ngi.
V vycnphi tun th cch phngchngbnhcngnhvicgign v sinh
trong thcphm. Sdngthcphmngphng php v nht l thcphmnghphnchmctiangcthc
phm.
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Tmhiuvkhun Clostridium botulinum
THE END