there was considerable differences in the

1
37 caVity,3’Z’) O rt ca: clidiasis, with cavity,3’32”; without cavity 3’06”, and suppuration, with cavity 3’22”;without cavity,3’03”,_Brown- Pea1℃e cancer showed remarkable delay- 5’32”一 There was considerable diffe pattern of blood radioactivity pending on solvent of radioiso of the pulmona1・y diseases. Travel of Oxygen in the Body as Studied by the U M.1エo,K. WATANABE and H. BABA Nαtionαl Nαkαno SanαtoriZ‘?抱 T.ASAKURA The Pe2ノαrt’ηent o∫ Phy8’ioloyic(tl CLηcZ NZttrit・ion,17’(LC’tLltび o 乙7η初eγS{ty of Toんyo, Toltyo T.KARAsAwA and A. SIIIMAMuRA The ∫ηstitute o∫Ph瑠sicα1αη‘l Chθmi(〕αl Re8《2αγcん How the oxygen travels in the body after it enters int⑪the blood七hrough lungs, how long does it take to complete fol・to be meta. bolized oxygen in the tissue mi七〇chondria as ahydrogen acceptor to produee water, is one of the most interesting problems in the physiology. Oxygen-15 is supposed to be a very convenient isotope for this purpose. Adog was made to respirate air containing oxygen-15. Specific activity of the oxygen-15 in the blood and the serum was pursued. The dog was anesthetized wi七h Nembutal and endotracheal intubation was performed. The dog used, weighed from 10 to 20 Kg. Before and after the experiments the func- tional residual capacity, a single breath ventilation, oxygen consumption, nitrogen clearance curve and difference of oxygen concentration in the artery and the vein were measured. From these data we can calculate the specific activity of oxygen-15 in the alveolar space, hemoglobin and the total amount of oxygen-15 which enters into the body. Aendotracheal tube was attached with the valve separating the inspirato1’y and the ex- piratol・y gas. The dog was allowed to breathe normally a constant amount of cxi6ren-15 continuously through the open circuit of oxygen-15, w}lich was l11・epa]・ed in the 26, cyClotron. After the inhalation of air containing oxygen-15, the blood was take femo1・al vein. The blood was cel then the red blood cell and t sepa1・ated. The specific ac七ivi by the welltype scintillation c The specific activity of blood to a constant height after 10 pearance of oxygen-15 eccured after about 40 seconds. It was the isetope in the sel・um ca and not from the oxygen-15 ph solved. Oxygen-15 in the seru mined by distillation method. The specific activity of wate before and after distillation When oxygen-15 entered into was metabolized in the mitoc tissue, returned into 七he blo Specific activity of carbon dio piratory gas was too minute tha七the actioll of carbonic negligible. Travel of oxygen in the body i as follows, oxygen in the ai with hemoglobin in the lung the hemoglobin is transfered 1・ia of the tissue. The metabol water is produced in the re by eatalysis of cytoc1・om oxida the produced watev enters r blood, Presented by Medical*Online

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Page 1: There was considerable differences in the

37

caVity,3’Z’) O rt , ca: clidiasis, with cavity,3’32”;

without cavity 3’06”, and suppuration, with

cavity 3’22”;without cavity,3’03”,_Brown-

Pea1℃e cancer showed remarkable delay-

-5’32”一

  There was considerable differences in the

pattern  of blood  radioactivity  curves, de-

pending on solvent of radioisotope and history

of the pulmona1・y diseases.

Travel of Oxygen in the Body as Studied by the Use of 1502

                M.1エo,K. WATANABE and H. BABA

                   Nαtionαl Nαkαno SanαtoriZ‘?抱

                          T.ASAKURA

The Pe2ノαrt’ηent o∫ Phy8’ioloyic(tl CLηcZ NZttrit・ion,17’(LC’tLltび o∫ Aleclic’ine,

                   乙7η初eγS{ty of Toんyo, Toltyo

                T.KARAsAwA and A. SIIIMAMuRA

          The ∫ηstitute o∫Ph瑠sicα1αη‘l Chθmi(〕αl Re8《2αγcん

  How the oxygen travels in the body after

it enters int⑪the blood七hrough lungs, how

long does it take to complete fol・to be meta.

bolized oxygen in the tissue mi七〇chondria as

ahydrogen acceptor to produee water, is one

of the most interesting problems in thephysiology. Oxygen-15 is supposed to be a

very convenient isotope for this purpose.

  Adog was made to respirate air containing

oxygen-15. Specific activity of the oxygen-15

in the blood and the serum was pursued.

  The dog was anesthetized wi七h Nembutal

and endotracheal intubation was performed.

The dog used, weighed from 10 to 20 Kg.

Before and after the experiments the func-

tional residual capacity, a  single breath

ventilation, oxygen consumption, nitrogen

clearance curve and difference of oxygenconcentration in the artery and the vein were

measured. From these data we can calculate

the specific activity of oxygen-15 in  the

alveolar space, hemoglobin and the totalamount of oxygen-15 which enters into the

body.

  Aendotracheal tube was attached with the

valve separating the inspirato1’y and the ex-

piratol・y gas. The dog was allowed to breathe

normally a constant amount of cxi6ren-15continuously  through  the  open  circuit of

oxygen-15, w}lich was l11・epa]・ed in the 26,

cyClotron.

  After the inhalation of air containing

oxygen-15, the blood was taken fl・om the

femo1・al vein. The blood was cellt1・ifuged and

then the red blood cell and the serum weresepa1・ated. The specific ac七ivity was counted

by the welltype scintillation counter.

  The specific activity of blood we1・e reached

to a constant height after 10 minutes. Ap-

pearance of oxygen-15 eccured in the serum

after about 40 seconds. It was checked that

the isetope in the sel・um came from waterand not from the oxygen-15 physically dis-

solved. Oxygen-15 in the serum was deter-

mined by distillation method.

  The specific activity of wate1・in the serum

before and after distillation were the same.

  When oxygen-15 entered into the body, it

was metabolized in the mitochondria of the

tissue, returned into 七he blood as water.

Specific activity of carbon dioxide in the ex-

piratory gas was too minute to detect. So

tha七the actioll of carbonic anhyd1・ase was

negligible.

  Travel of oxygen in the body is carried out

as follows, oxygen in the air is combined

with hemoglobin in the lung, oxygen with

the hemoglobin is transfered inte mitochond-

1・ia of the tissue. The metabolically derived

water is produced in the respilatory chainby eatalysis of cytoc1・om oxidase. A part of

the produced watev enters rapidly into theblood,

Presented by Medical*Online