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????????. ?????? ????? ???????? 453020351-0?????? ?????? ????????? 453020386-1??????? ???????? ?????????????? ??????????????????. Chromosome Aberration ???????? 2 ?????? ???. ??????????????????????????????????? (Structural Aberation) ??????????????????????????????? (Numberical Abberation).
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1. Chromosome Aberration in Human
2. ???????? ?????? ????? ???????? 453020351-0
?????? ?????? ????????? 453020386-1
??????? ???????? ??????????????
??????????????????
3. Chromosome Aberration ???????? 2 ?????? ??? ??????????????????????????????????? (Structural Aberation)
??????????????????????????????? (Numberical Abberation)
4.
?????: http://www.snr.ac.th/elearning/siriporn/sec.05p01.htm
5.
?????: http://www.snr.ac.th/elearning/siriporn/sec.05p01.htm
6. ??????????????????????????????????? ? Trisomy 52 %
45 X 18 %
Triploid 17%
Tetraploid 6%
Unbalance translocation 3%
Other 4%
7. ????????????????????? 21 ???????????????? 1 ????
???????????????? 21 ?? 3 ???????? ???????? Trisomy 21
??????????????? 47 ????
??????
?????????????????????????????????????(autosome) ???????????????????????????? ???????????????????????????????????????????????????? ?????????????????????????????????????????????? mitosis
8. Mikkelsen (1980) ?????????????????????????????????????????????????????
20% ???????????? Down syndrome ???????????????????????????????????????????????
???????????????????????????????????? ?????????????????? meiosis I
9. ????? ?????????
????????? ????????????????
????????????
??????????
???????????????
?????????????
??????????????
10.
????????????? Down syndrome
?????: http://www.ipst.ac.th/biology/vol2.htm
11. ?????????????????? Down syndrome ??????????
- ???????????????????????????? 35 ????????
?????????????????
- ????????????????????????????????????????????????????
13. ??????????????????????? ??????????????? alpha-feto-protein ?? serum ??????
- alpha feto-protein ????????????????? fetal ???????????????????? ???????????????????????????
- ????????? alpha feto-protein ??? neural tube ??? fetal ???????????????? ???? spina bifida (open spine) or anencephaly (absence of the brain)
- ????????? alpha feto-protein ??? fetal ?????????????????????? Down syndrome
14. Penrose (1965) ????????????????????????????????? Down syndrome ?????????????
??????????????trisomic zygote
??????????????????????????????????
????????? spindle fiber ?????????????????????
????????????????????????
????????????????????? ???? ??????????? ???????????????? ?????????????
15. Trisomy 18 (E syndrome) Edwards syndrome
????????????????????????????????? E (16-18)???????? E-trisomy
??????????? 18 ?????? 1 ????
?????????? 47 ????
???????????????? (?????? Down syndrome)
???????????????????????????? 6 ?????
??????????????????? 15 ?????????????
16. ??????????????????? ????????????
???????????
?????
?????????
???????/??????????? 2 ???3 ????3 ??? 4 ????????????
????????????????
????????????
??????????? ??????????? rocker bottom
17.
????????????? E syndrome
http://www.ipst.ac.th/biology/vol2.htm
18. Trisomy 13 (Patou syndrome or D-syndrome) ????? K.Patou
??????????????????????? D ???????? D-syndrome
??????????? 13 ?????? 1 ????
?????????????????????????????????? ???????????????????????????????????? 2-3???
19. ??????????????????? ?????????
????????
??????
???????????????
????????
Rocker bottom feet
20. Cri-Du Chat Syndrome ???? Cat, cry syndrome ?????????????????????????????????????????
????????????????????????? 5 ??????
?????????? 46 ????
21. ???????????????????
?????????
????????? ???????
???????????
?????????????????
22.
????????????? Cri-Du Chart syndrome
http://www.ipst.ac.th/biology/vol2.htm
23. Chromosome Breakage Conditions Fanconima anemia (FA)
* Excess Chromosomal breakage in cultured cells
?????????????
* ???????????????????
* ?????????????????? ???? ????????????
* ??????????????????????????? ??????????????????
* ????? ??? ?? ?????????????
* ???????? Fetal hemoglobin ??? ??? ???????????????????????????????
???????? leukemia
24. Bloom syndrome (BS) ??????
1.?????????????????????????? sister chromatid ????????
2. ??????????????????????????????????????????? ultraviolet
?????????????
- ???? , ??????????????????????
- ??????????????? telangiectasia
25. Bloom Syndrome
26. Xeroderma pigmentosum (XP) ??????????????
?????????????
???????????????? ?????????????????????????
???????????? ?????????????????????
???????????????????????
* ??????????? ??????????????????????????????????
- ??????????? utreaviolet ??? ???????????? (carcinogen) ????????????????????????
- ??????????????????????????????? sister chromstid ????????????????????????????????????????????????????
27. Xeroderma pigmentosum
28. Ataxia-telangiectasia (AT) or Louis Bar syndrome ???? auto recessivegenetic syndrome
?????????????
* ????????????????????????? ??????????????????(cerebellar)
??? telangiectases
* ??????????????????????????????????
10 % of individauls lymphatic cancer develops ???????????????? 20??
* ?????? premature ????????????????? lymphocytes ????????????????????? ??? non-random ??????????????? AT ???????????????????????? DNA ???????????????????
30. Chromosome Defect and High- Resolution Band Tecnique ?????????????????????????????????????????????????
Examples
- retinoblastoma
- prader willi syndrome
31. Retinoblastoma
32. Retinoblastoma ???? tumor ??????????? retina
???????????????????????????? Malignancy ???? osteosarcoma
????? Rb gene ??????????????????????????? Retinoblastoma ??? ?????? 2 ???????????????? two hit model proposed by Khudson U. of Texas ?? 1971
33. Retinoblastoma (???)
35. Chromosomal Abnormalities and Cancer In 1960 , Nowell and Hungerford ?????
* Myelogenous leukemia Chromosome 22 Shorten version
* Reciprocal translocation between Chromosome 9 and 22
36. Philadelphia chromosome
37. Burkitt Lymphoma ????????????????? Central Africa
??????????? Oncogene ??? Chromosome defect
???????????
- ?????????????????????
??????
- ????? translocation ??????? ?????????????? 8 ??? 14
- ????????? C- myc gene (?????? B-cell) ????????????????? 8 ?????????? 24 ??????????????????? 14 ?????????? 32
- ??? transcription ??? C- myc gene ????????? 30 ???? Malignant growth
38. Disorder of the Sex Chromosomes Kleinefelter syndrome (47 , XXY) ????
???????? X ??????? 2 ??? ???? 48 , XXYY , 49,XXXXY
?????
* ?????????????????????????? ???? ???????? ???????????? ??????????? ????????
* ??????????????? : ???????????????? ???????????????????????? ?????????????????????????
* ???????? : ????????????????????? 25 ?????????????????????? X ???????
* ???????? : ??????????????? , ???????
39. Kleinefelter syndrome (47 , XXY)
40. Kleinefelter syndrome (47 , XXY) (???) ??????????? 90 XXY boys , 8-14 years old ?????
IQ ???????????
???????????????????
????????????????????
????? ??????
* ???? 1956 ??????? Barr body
??????????????????????????
41. Poly X Female ?????????????????? X ??????? 2 ??? ?????? 47,XXX , 48,XXXX ??? 49,XXXXX
???????????????????? Chomosome : ???? Nundisjunction
???????????????????????????????????????? Chomosome
????? : ???????????????????????????????? ????????????????????????? ?????????????????????? X ???????
42. Turners Syndrome ????????? ???????????????????? ??? 45,XO
???? Monosomy ????????????????????????????????????
???????????
* ????????????????????????? ??????????????????????
* ???????????????? ?????????????????????????????????????????
* ?????????????????????????? ??????????????????????????
* ????? ,??????????????,????????????????????????
* ??????????????? , ???????????????????? ?????????
43. Karyotype of an individual with Turners syndrome
44. Turners syndrome
45. The XYY Anomaly ??????????????????????????????????????
3.5 %???????????????????????????????? ???? ?????
????????????????????????????
?? 2 ???
- Nondisjunction ?????????????????????
- Nondisjunction ??? Zygote
46. ????? ??????? : ??????
?????????????? : ????????????
???????? : ???????????
????????????????? : ????????????? ????????
??????????? 59 XYY boys , ???? 5 - 13 ???????
???????????????????????????????????????? ????????????? ??????????????????
47. ?????????? Carpena L. A., Espino R. R.C., Rosario T. L. and Laude R. P. 1993. Genetics at the Population Level. SEAMIO SEARCA, Phillipines.
????? ???????????. 2525. ???????????. ?????????????2. ????????????? ?????????? ?????, ????????.
????? ?????????. 2520. ??????????????????????????. ?????????????1. ???.