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272            PART 4  ■  Erythrocyte Disorders










                                                 Glycine
                                                                                  δ-ALA
                                                                                                                     Porphobilnogen (PBG)
                                                                                  Synthase
                                             Succinyl CoA                                                                              (4-PBG)
                                                                                                 δ-ALA


                                                                                                                      Hydroxymethylbilane

                                                  Heme                  Heme proteins



                                                             Fe  2+



                                          Protoporphyrin IX                                     Uroporphyrinogen III                        Uroporphyrinogen I                              Uroporphyrin
                                                                                                                                                                                            (excretion)



                                       Protoporphyrinogen IX                                  Coproporphyrinogen III                      Coproporphyrinogen I                              Coproporphyrin

                                                                                                                                                                                            (excretion)








                                 FIGURE 14.8  T       m                                   . I                                                     m                           z  m      x

                                 δ-  m                                                                                                                                k                                   .
                                 (R                  m M                MW,        . Green  eld’s Surgery Scienti  c Principles and Practice,           , P                  ,

                                 PA: L               W      m  & W  k    ,         ,             m        .)






                    P                                                                                           :                                                                     .  S m       ,

                                                                                                                                                              m          ,   x                                -
               ■    C                               (             .             )                                                   .  H           ,

               ■    S                  z  m                                                                                      k           m      m

               ■    S               z  m                                       m                                                        . W                                                     ,                -

                                                                                                                           m                                 m                                             .

                    C            ,                                                                       -                      D                                                m                                  -

                       m                    k              m . S  m                                                           m     (      C               ).

                  m     m . D                      m

                                                                           :

                                                                               m                                              NOTE: This is a good time to complete the   nal end of

               m                  .                                                                                            chapter Review Questions.

                    P                                     m         G     k         ,  porphyra,

                        m                  . T              -           m      (                )

                                                      -                                              -

                                 . PBG         m         x                m       m                                        CHAP  ER HIGHLIGH  S

                      ;             ,                                                        m

                                    m                        ,           m                                                 Iron De  ciency Anemia

                                                E         ’                              . I                               ■    A                   ’                                        m

                                                   PBG,  m            m                                                         m

                            m                                                 .                                                                      . I                              m    (IDA)

                    W                                         m          ,       m                                              m         mm                        m    .

                      m                                ,           m                   x                                   ■    IDA  m                    m                                     ,

                                 . T             -                                                                                     m                                ,                     m

                                                                                                                                                m   ,       x                            .

                      , P           B              (F   .     .  ). T                                                      ■    I                        m                  m           mm                 -

                       sideroblasts.                                                                                                                                                                     z        ,


                                                                                                                                                           m   ;                      m                         ;

               DISORDERS RELA  ED   O HEMOGLOBIN                                                                                     m                                              /                   m-

               BIOSYN  HESIS: DISORDERS OF                                                                                      m        ;                                                  k      m;

               GLOBULIN SYN  HESIS                                                                                                                                m                                        ,

                                                                                                                                               .

               G                                                                                     -                     ■    N   m                              m    ,   m

                       . W                                    m          ,                                                        m  /  . I                   m                               x
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