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Re: Fwd from Tuan V. Nguyen: Stress va` xa'c sua^'t sinh con ga'i
From: "Hoa Nguyen" <thanhhuy@email.msn.com>
>Reply-To: vnsa@list-server.net
>To: <vnsa@list-server.net>
>Subject: Fwd from Tuan V. Nguyen: Stress va` xa'c sua^'t sinh con ga'i
>Date: Fri, 27 Aug 1999 07:52:09 -0700
>
>Hi ca'c ba'c,
>Tui vo^'n thi'ch ddo.c nhu+~ng ba`i ba'o khoa ho.c cu?a ca'c
>o^ng ba` ta^m ly' ho.c vie^'t ve^` medicine. Ho^m nay, tre^n to+`
>British Medical Journal (mo^.t to+` journal co' tho+`i la`m so'ng
>la`m gio' tre^n die^~n dda`n medicine the^' gio+'i va` nay va^~n la`
>top 10) co' dda(ng mo^.t nghie^n cu+'u cho ra(`ng nhu+~ng ba` me.
>bi. stress trong tho+`i gian co' ba^`u thu+o+`ng hay sinh con ga'i!
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>Stress dda^y nhu+ la` thua ba`i ba.c, so+. cho^`ng bo? ddi, co'
>ngu+o+`i tha^n bi. ma^'t, v.v.
Cha`o ba'c Tua^'n Nguye^~n:
To^i nghi~ statement tre^n kho^ng chi'nh xa'c. Co' 2 loa.i tinh tru`ng ( co'
di truye^`n X va` Y) qua? tru*'ng ddu*o*.c xa'c ddi.nh ve^~ gio^'ng ngay khi
tru*'ng thu. tinh!. Tru*'ng luo^n mang di truye^`n X; vi` the^' khi thu.
tinh vo*'i tinh tru`ng mang gene X se~ tha`nh tru*'ng thu. tinh mang gene XX
va` pha't trie^?n tha`nh Female. Tru*'ng (X) thu. tinh vo*'i tinh tru`ng
mang gene Y se~ tha`nh tru*'ng thu. tinh mang ca(.p gene XY va` pha't
trie^?n tha`nh Male. Co' the^? ngu*o8`i me. khi bi. stress environment trong
tu*? cung de^~ ta.o ddie^~u kie^.n to^'t cho tinh tru`ng mang gene (or
Chromosome) X thu. tinh do ddo' tha`nh tru*'ng thu. tinh XX va` pha't
trie^?n tha`nh con ga'i . Ve^` gio^'ng cu?a off spring ddu*o*.c quye^'t
ddi.nh bo*"i tinh tru`ng chu*' kho^ng ba(`ng tru*'ng . Trong cha(n nuo^i ho.
dda~ co' phu*o*ng pha'p dde^? ta.o gio^'ng theo y' muo^'n, thi' du. ta.o
nhie^~u gio^'ng bo` su*~a la` con ca'i (con ddu*.c kho^ng cho su*~a. Co`n
gio^'ng bo` nuo^i la^'y thi.t ho. thi'ch nhie^`u con ddu*.c vi` to va` cho
nhie^`u thi.t ho*n.
>Nho'm nghie^n cu+'u na`y o+? Ddan Ma.ch kho^ng gia?i thi'ch
>ddu+o+.c ta.i sao stress la.i associated vo+'i xa'c sua^'t sinh con
>ga'i. Nhu+ng ho. suy lua^.n ra(`ng nhu+~ng "ve^'t thu+o+ng ta^m
>ly'" (psychological trauma) co' the^? ta(ng xa'c sua^'t bi.
>miscarriage nam tu+` trong embryos, hoa(.c co' the^? la`m ta(ng kha?
>na(ng "tinh tru`ng nu+~" ga(.p tru+'ng tru+o+'c. No'i chung la`
>They don't know.
Nhu*~ng ddie^~u kie^.n trong tu*? cung cu?a ngu*o*`i nu*~ (hay con ca'i) bi.
stress kha'c vo*'i ng` thu*o*`ng ra sao ra^'t kho' kie^?m chu*'ng, du` tre^n
chuo^.t, khi ta cho du.ng cu. va`o 1 con chuo^.t ca'i kho^ng bi. stress la`
ta dda~ la`m no' bi. stress ro^`i!
>Tuy nhie^n, co' nhie^`u data trong qua' khu+' co' the^? xa'c
>ddi.nh ra(`ng stress la`m thay ddo^?i ti`nh du.c cu?a vo+. cho^`ng
>(which is expected anyway), va` qua ddo' a?nh hu+o+?ng dde^'n cha^'t
>lu+o+.ng cu?a tinh tru`ng va` nha^'t la` la`m thay ddo^?i hormone
>cu?a ba` me..
Ca'i na`y thi` ddu'ng'
>Anyway, ba`i ho.c cho nh~ ai thi'ch co' con trai la` ddu+`ng
>la`m cho vo+. bi. stress!
Kho^ng ha(?n hoa`n toa`n ddu'ng!:-)); stress chi? la` 1 factor trong
nhie^`u factor! Vi` va^.y nhu*~ng phu*o*ng pha'p artificial kha'c dde^? sinh
con trai (con ddu*.c) co' the^? hu*~u hie^.u ho*n, nhu* thu. tinh nha^n ta.o
ba(`ng nhu*~ng tinh tru`ng Y dda~ ta'ch ly khoi? ho^~n ho*.p tinh tru`ng XY
trong tinh di.ch ng` bo^' (Hay con ddu*.c cho ddo^.ng va^.t).
Ngoa`i ra co`n nhu*~ng artificial technic kha'c dde^? sinh con ddu*.c (cho
ddo^.ng va^.t), hoa(.c nhu*~ng technic cho ngu*o*`i dde^? sinh con trai
nhu*ng tre^n die^~n dda`n na`y se~ tha`nh chuye^.n Taboo ra^'t kho' no'i.
Tu*.u trung, muo^'n sinh con trai la` pha?i tao ddie^`u kie^.n to^'t cho
tinh tru`ng Y cu?a bo^' (or con ddu*.c) thu. tinh vo*'i tru*'ng cu?a ng` me.
(or con ca'i). Tinh tru`ng quye^'t ddi.nh gio^'ng cu?a off spring, hoa`n
ca?nh, ddie^`u kie^.n trong tu*? cung ngu*o*`i me. (con ca'i) ta.o ddie^~u
kie^.n cho tinh tru`ng ddu*.c (mang gene Y) hay ca'i (mang gene X) thu. tinh
va` quye^'t ddi.nh gio^'ng ddu*.c, ca'i cho off spring tu*` ngay gia^y phu't
tru*'ng ba('t dda^`u thu. tinh (con tinh tru`ng (X or Y) chui qua ma`ng qua?
tru*'ng) chu*' kho^ng pha?i gio^'ng ddu*o*.c quye^'t ddi.nh trong tho*`i
khi` mang thai .
Xin go'p y'
DX
>===
>Tuan V Nguyen
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