DANIL HAMMOUDI.MD
SINOE MEDICAL ASSOCIATION
FOR THE USMLE
-32 YEAR OLD KC PATIENT
·
2 PACKS OF CIGARETTES/DAY-->10 YEARS
·
DECREASE PULMONARY FUNCTION TEST
·
X RAYS: PREEXISTING PULMONARY DISEASE
***PRESCRIPTION
POSSIBLE: ***EXCEPT: |
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BLEOMYCIN
: ADVERSE EFFECTS :
+++PNEUMONITIS
+++PULMONARY FIBROSIS
MECHANISM OF ACTION: +++THE PLANAR END OF THE BLEOMYCIN
MOLECULE INTERCALES WITH DNA.
+++FREE
RADICAL O2 CLEAVES DNA ACTION AT PURINE- GUANOSINE-CYTOSINE-PYRIMIDINE SEQUENCES.
+++CELLS
IN G0 AND G2 PHASES ARE MOST SENSITIVE.
PHARMACOCINETICS: 1/2 LIFE 1 H
ELIMINATION:
URINE 24H
ACTION: -SKIN
-LUNG
BY BLEOMYCIN
HYDROLASE
ASSOCIATION: CISPLATIN - VINBLASTINE ==>TESTICULAR CARCINOMA
KC:
1.
-TESTICULAR CARCINOMA
2.
-HODGKIN'S-NON HODGKIN'S
3.
-SQUAMOUS CELLS CARCINOMA
4.
-HEAD NECK-CERVIX-SKIN
> 400 UNIT [4X1.7
mg]===> PULMONARY TOXICITY
BLEOMYCIN DOES NOT PRODUCE
SIGNIFICANT BONE MARROW TOXICITY.
KC CHEMOTHERAPY NATURAL
PRODUCT:
1/ ATB :
1.
***DACTINOMYCIN [ACTINOMYCIN D]
2.
***ANTHRACYCLINES
3.
***BLEOMYCIN
4.
***MYTOMYCIN [MITOMYCIN C]
2/ VINCA ALKALOIDS
3/BIOLOGIC RESPONSE
MODIFIERS: ***INTERLEUKINE-2 [IL-2]
***INTERFERONS [ a, b, g]
4/ ENZYMES : ***L - ASPARAGINASE
5/ EPIPODOPHYLLOTOXINS [
ETOPOSIDE AND TENIPOSIDE]
***TAMOXIFEN
***ANDROGENS
AND ANTIANDROGENS
| |
FLUOXYMESTERONE FLUTAMIDE
DROMOSTANOLONE
TESTOSTERONE
***ADRENAL CORTICOSTEROIDS :+++PREDNISONE +++PROGESTINS
MISCELLANEOUS AGENTS
: ***HYDROXYUREA
***PROCARBAZINE
***MITOTANE [OP'-DDD]
***CISPLATIN
***INTERLEUKIN 2 [IL-2]
ANTIMETABOLITES:
1.
***METHOTREXATE
2.
***PURINE ANALOGS: +++6-MERCAPTOPURINE +++6-
THIOGUANINE +++PENTOSTATINE
3.
***PYRIMIDINE ANALOG: +++5 FLUOROURACIL +++CYTARABINE
ALKYLATING AGENTS:
1.
***NITROGEN MUSTARDS
2.
***NITROSOUREAS
3.
***ALKYL SULFONATES
4.
***TRIAZENES
1/ nitrogens mustards:
***MECHLORETHAMINE |
***CYCLOPHOSPHAMIDE |
***MELPHALAN |
***CHLORAMBUCIL |
2/ NITROSOUREAS ***CARMUSTINE |
***LOMUSTINE |
3/ALKYL SULFONATES ***BISULFAN |
4/TRIAZENES ***DACARBAZINE |
S PHASE=DNA SYNTHESIS |
THE FOLLOWING DRUGS ARE
COMPONENTS OF THE MOPP CANCER CHEMOTHERAPY REGIMEN:
***MECHLORETHAMINE
***VINCRISTINE
***PREDNISONE
***PROCARBAZINE
CYCLOPHOSPHAMIDE CAN BE
USED TO TREAT ALL OF THE FOLLOWING NEOPLASTIC DISORDERS:
***HODGKIN'S
DISEASE
***BURKITT'S LYMPHOMA
***OVARIAN CARCINOMA
***BREAST CARCINOMA
PROLIFERATION INDEPENDENT
AGENTS INCLUDE ALL THE FOLLOWING:
***CARMUSTINE
***CYCLOPHOSPHAMIDE
***MECHLORETHAMINE
***MELPHALAN
ALL THE FOLLOWING ADVERSE
EFFECTS ARE COMMONLY ASSOCIATED WITH KC CHEMOTHERAPY:
***ALOPECIA
***TERATOGENESIS
***MYELOSUPPRESSION
***NAUSEA
ALL THE FOLLOWING AGENTS
HAVE BEEN USED FOR KC CHEMOTHERAPY:
***ALKYLATING AGENTS
***ANTIMETABOLITES
***PLANT ALKALOID
***HORMONAL AGENT
CHARACTERISTICS OF
METHOTREXATE INCLUDE ALL OF THE FOLLOWING:
***IT CAN BE USED IN THE TRT OF
PSORIASIS
***IT IS ELIMINATED BY THE KIDNEY
***IT IS A SELF LIMITING S-PHASE
SPECIFIC DRUG
***IT COMPETITIVELY INHIBITS
DIHYDROFOLATE REDUCTASE.
·
METHOTREXATE : ***ANTIMETABOLITES CANCER CHEMOTHERAPY
·
THERE IS 3 MAJOR CLASSES OF
ANTIMETABOLITES : +++FOLIC ACID ANALOGS
+++PYRIMIDINE
+++PURINE
RELATED AND RELATEd INHIBITOR
TRUE STATEMENT REGARDING
ALKYLATING AGENTS INCLUDE ALL OF THE FOLLOWING:
***THEY ARE PHASE NON SPECIFIC
***THEY KILL RAPIDLY PROLIFERATING CELLS
***ACQUIRED RESISTANCE CAN OCCUR
***THEY KILL NON PROLIFERATING CELLS
ALKYLATING AGENTS: - PHASE NON SPECIFIC
-KILLING RAPIDLY
PROLIFERATING CELLS
-KILL NON PROLIFERATING
CELLS==> ALKYLATION OF RNA
DNA
ESSENTIAL
PROTEINS
-SOME NITROGEN
MUSTARD ARE PROLIFERATION -INDEPENDENT
-ALKYLATION OF DNA IS
RESPONSIBLE FOR THE CYTOTOXIC ANTITUMOR ACTIVITY.
++THE 7 NITROGEN AND GO2
OF GUANINE ARE THE MOST FAVORED SITES OF
DNA FOR ALKYLATION :
RESULT : = CROSS LINKING
BIFUNCTIONAL ALKYLATING AGENTS } ==> INHIBITS DNA REPLICATION =MISPAIRING OF BASES: ALKYLATED
GUANINE FORMS BASE PAIRS WITH THYMINE===> DEFECTIVE PROTEIN. =DEPURINATION
OF DNA: CLEAVAGE OF IMIDAZOLE RING
MAJOR CLASS: ***NITROGENS MUSTARD
***NITROUREAS
***ALKYL SULFONATES
***TRIAZENES
***APLASIA OF THE BONE MARROW
***ALOPECIA
***MENSTRUAL IRREGULARITIES
***NAUSEA AND VOMITING
+++1/ MECHLORETHAMINE
+++ 2/ CYCLOPHOSPHAMIDE
+++ 3/ MELPHALAN [L-SARCOLYSIN]
+++4/CHLORAMBUCIL
1- THERAPEUTIC USES: ***HODGKIN'S AND NON HODGKIN'S
|
COMBINED WITH:
{-PROCARBAZINE
{-PREDNIZONE
*** TRT MYCOSIS
FUNGOID
ADVERSE EFFECT: -MYELOSUPPRESSION
-NAUSEA AND VOMITING
-ALOPECIA
-MENSTRUAL
IRREGULARITIES
2- CYTOTOXIC SPECIFIE=
PHOSPHARAMIDE MUSTARD + ACROLEIN
1.
***HODGKIN'S DISEASE
2.
***BURKITT'S LYMPHOMA
3.
***OVARIAN AND BREAST CARCINOMAS
4.
***OAT CELLS LUNG ***NEUROBLASTOMA
ADVERSE EFFECTS: -RARELY THROMBOCUTOPENIA
-ALOPECIA
-10% STERILE HEMORRHAGIC CYSTITIS
-PROLONGED TRT:
-INTERSTITIAL PULMONARY FIBROSIS -FATAL CARDIOMYOPATHY
3-MELPHALAN
[L-SARCOLYSIN]: GI ABSORPTION
USED : -MULTIPLE
MYELOMA+++
-BREAST KC
-OVARIAN KC
ADVERSE EFFECTS: -MYELOSUPPRESSION
-VOMITING -NAUSEA
-ALOPECIA RARE
4-CHLORAMBUCIL:
-GI ABSOPTION
-COMPLETELY METABOLIZED
-IT IS THE SLOWEST ACTING
NITROGEN MUSTARD USED:
·
-CHRONIC LYMPHOCYTIC LEUKEMIA
·
-WALDENSTROM'S MACROGLOBULINEMIA
·
-HODGKIN'S DISEASE AND NON HODGKIN'S LYMPHOMAS
ADVERSE EFFECTS -MYELOSUPPRESSION
-NAUSEA-VOMITING
TRT CHEMOTHERAPY GN:
A/ GROWTH OF A TUMOR:
***FRACTION OF THE TOTAL
ALL POPULATION THAT IS PROLIFERATING ***TIME REQUIRED FOR AN INDIVIDUAL CELL TO
DIVIDE [CELL CYCLE TIME] ***RATE OF CELL LOSS
ANTITUMOR AGENT: 2 GN
CLASSES:
1.
***PHASE SPECIFIC AGENTS
ACT AT SPECIFIC PHASES OF
THE CELL CYCLE: +++HYDROXYUREA}
KILL ON THE S PHASE +++CYTARABINE
}
2. ***PHASE NON SPECIFIC
AGENTS
+++5-FLUOROURACIL
+++CYCLOPHOSPHAMIDE
***METHOTREXATE KILLS CELLS IN THE S PHASE BUT ALSO
INHIBITS RNA SYNTHESIS IN G1 AND G2 PHASES===> LIMITING ITS OWN CYTOTOXICITY
-COMMON SIDE EFFECTS:
***MYELOSUPPRESSION
***GI BLEEDING AND ULCERS-NAUSEA-VOMITING
***ALOPECIA
***NEPHROTOXICITY
***TERATOGENESIS,ABORTION
***IMMUNOSUPPRESSION
CLASSIFICATION:
1.
***ALKYLATING AGENTS
2.
***ANTIMETABOLITES
3.
***NATURAL PRODUCTS
4.
***HORMONES AND ANTAGONISTS
5.
***MISCELLANEOUS AGENTS
===========================================================================================================================================================
***50%
OF ALL NEW DIAG KC PATIENTS WILL BE CURED OF THEIR DISEASE ***CHEMOTHERAPY IS
***CHEMOTHERAPY
POSSESSES NUMEROUS SIDE EFFECTS, SUCH NAUSEA VOMITING AND SUPPRESSION OF BONE
MARROW. ***NEW AGENT ARE CELL CYCLE SPECIFIC
***CYCLOPHOSPHAMIDE
***THEY ARE STRUCTURALANALOGUES OF
NATURALLY OCCURING SUBSTANCES .
***PREDNISONE
***VINCRISTINE
***PROCARBAZINE
***MECHLORETHAMINE
***THEY ARE ABLE TO FORM COVALENT
COVALENT BONDS WITH NUCLEOPHILIC SITES ON NUCLEIC ACIDS
***THEY ARE CYTOTOXIC OWING TO THEIR ACTIVITY
AGAINST DNA
***THEY ARE ABLE TO FORM A POSITIVE CARBONIUM
ION
***THEY CAN AFFECT ANY PART OF THE CELL CYCLE
***DOXORUBICIN [ADRIAMYCIN]
ALSO: STOMATITIS-ALOPECIA-BONE MARROW DEPRESSION-
=ANTHRACYCLINE : ***DOXORUBICIN
***DAUNORUBICIN
***MITOXANTRONE
ACTION : ***INTERCALATION
WITH DNA AND RNA ==> DNA AND RNA ARE DISTORTED
***PHASE NON SPECIFIC
***TISSUE CYTOTOXICITY
***CARDIOTOXICITY =CHRONIC
CARDIOMYOPATHY AND ACUTE
DOXORUBICIN: ***SOLID TUMOR
***ACUTE LEUKEMIAS
***MALIGNANT LYMPHOMAS
DAUNORUBICIN: ***ACUTE LYMPHOCYTIC AND GRANULOCYTIC
LEUKEMIA
MITOXANTRONE:
LESS TOXIC THAN DAUNORUBICIN WHEN COMBINED WITH CYTARABINE FOR INITIAL TRT OF
ACUTE NONLYMPHOCYTIC LEUKEMIA.
***ADVANCED
BREAST KC
***5-FLUOROURACIL
***METHOTREXATE
***6-MERCAPTOPURINE
***VINCRISTINE
***IT
INHIBITS THE METABOLISM OF 6-MERCAPTOPURINE
***IT
INCREASES THE ANTINEOPLASTIC ACTION OF 6-MERCAPTOPURINE ***IT INHIBITS XANTHINE
OXIDASE
***IT DECREASES SERUM URIC ACID
LEVEL.
***THEY CROSS CELL MEMBRANES EASILY
***THEY
BIND TO A FAMILY OF INTERCELLULAR PROTEIN =CYCLOPHILLINS ***THEY INHIBIT THE
PRODUCTION OF IL 2 BY HELPER T CELLS.
***ACTIVE
BIOTRANSFORMATION OF CYCLOSPORINE IS BY CYTOCHROME P-450.
***IT HAS LITTLE ACTION ON AN
ETABLISHED GRAFT REJECTION
***IT
HAS NON SELECTIVE ACTION IN THE SUPPRESSION OF LYMPHOID CELLS
***IT GREATLY INCREASES THE
SUSCEPTIBILITY OF THE PATIENT TO INTERCURRENT INFECTIONS. AZATHIOPRINE IS
CONVERTED BY THE BODY TO MERCAPTOPURINE.
WELL ABSORBED BY GI
LATE TOXICITY = RISK OF
MALIGNANCY [SKIN KC-LYMPHOID TUMORS]
***BINDS TO SITES ON THE ENZYME
DIHYDROFOLATE REDUCTASE.
***INDICATED IN:
***ANTIMETABOLITE
***INHIBIT
THE SYNTHESIS OF PROSTAGLANDINS AND LEUKOTRIENES
***LYSE T CELLS
***INCREASE
CATABOLISM OF GAMMA G GLOBULIN [IG G] ON CONTINUOUS ADMINISTRATION
***DIMINISH
THE ABILITY TO WITHSTAND INFECTIONS AND HEAL WOUNDS.
***INHIBITION OF THE
FUNCTION OF MICROTUBULE
***VINBLASTINE
BOTH BIND TO
TUBULINE===> INTERFERING WITH ASSEMBLING OF SPINDLE PROTEINS DURING MITOSIS
M-PHASE SPECIFIC==> BLOCKING PROLIFERATING CELLS AS THEY ENTER METAPHASE
CAUSING CELL DEATH. METABOLIZED IN THE LIVER EXCRETED IN THE BILE.
CROSS RESISTANCE DOES NOT
APPEAR TO OCCUR IN HUMAN TUMORS.
-LYMPHOMAS -----NEUROBLASTOMAS
-LETTERER-SIWE DISEASE
·
ACUTE LYMPHOBLASTIC LEUKEMIA
·
SOLID TUMOR IN CHILDREN
·
TUMOR OF THE BREAST
·
LUNG
·
CERVIX
PARESTHESIA
JAW PAIN
1.
FLUOROURACIL: ORAL AND GI ULCERATION
ASPARAGINASE:PANCREATITIS
2.
CYCLOPHOSPHAMIDE
·
[CYTOXAN]: ***ASEPTIC
·
***HEMORRHAGIC
***CYSTITIS
·
CIS-DIAMMINEDICHLOROPLATINIUM
[PLATINOL]: ***NEPHROTOXICITY
·
PROCARBAZINE [MATULANE]: ***PERIPHERAL NEUROPATHY
·
CHLORAMBUCIL: MACROGLOBULINEMIA
1.
FLUOURACIL: CARCINOMA OF THE COLON
2.
DACARBAZINE: MELANOMA
3.
TAMOXIFEN: BREAST KC
4.
RADIOACTIVE IODINE: CARCINOMA OF THE
THYROID
***HODGKIN'S DISEASE
***BURKITT'S LYMPHOMA
***OVARIAN CARCINOMA
***BREAST CARCINOMA
***IT CAN BE USED IN THE TRT OF
PSORIASIS
***IT IS ELIMINATED BY THE KIDNEY
***IT IS A SELF LIMITING S-PHASE
SPECIFIC DRUG
***IT COMPETITIVELY INHIBITS
DIHYDROFOLATE REDUCTASE
***FOLIC ACID ANALOGS
***PURIMIDINE
***PURINE AND RELATED INHIBITOR
===========================================================================================================================================================
TUMORS AND IMMUNOLOGY:
·
SPONTANEOUS REGRESSION OF SOME TUMOR :
***MALIGNANT MELANOMA
***NEUROBLASTOMA
·
LONG TERM INDOLANCE OF SOME TUMOR THEN
SUDDENLY METASTASIZE
·
PRESENCE OF MONOCLONAL CELL INFILTRATE
IN SITU IN INFLAMMATORY CARCINOMAS CORRELATES WITH IMPROVED SURVIVAL RATES.
·
IMMEDIATE AND DELAYED
HYPERSENSITIVITY.TO AUTOLOGUS TUMOR CELL EXTRACTS IN SKIN REACTION TEST.
·
THE INCIDENCE OF MALIGNANCY IS HIGHEST
IN THE NEONATALE PERIOD AND IN OLD AGE, WHEN THE IMMUNE SYSTEM FUNCTIONS LESS
EFFECTIVELY .
1.
CHILDREN WITH CERTAIN CONGENITAL
IMMUNODEFICIENCIES ARE AT INCREASED RISK FOR KC:
i)
LYMPHOMAS AND ACUTE MYELOGENOUS LEUKEMIA
OCCUR IN 10-30% OF CHILDREN WITH WISKOTT-ALDRICH SYNDROME.
ii)
NON HODGKIN’S LYMPHOMA AND STOMAC KC ARE
MORE COMMON IN CHILDREN WITH ATAXIA
TELANGIECTASIA AND COMMON IMMUNODEFICIENCY THAN THEY ARE IN AGE MATCHED HEALTHY
CHILDREN.
2.
ANOGENITAL CARCINOMAS [CERVIX KC+++] ARE
INCREASED
·
NEUROBLASTOMA:
***THE
LYMPHOCYTES OF CHILDREN WITH NEUROBLASTOMA ARE CYTOTOXIC TO THE CELLS OF THIS
TUMOR BUT EXPRESS NO TOXICITY AGAINST NORMAL CELLS OR CELLS OF OTHER TUMORS.
***LYMPHOCYTES
FROM MOTHERS OF CHILDREN WITH NEUROBLASTOMA DEMONSTRATE IN VITRO TUMOR SPECIFIC
CYTOTOXICITY TOWARD NEUROBLASTOMA TUMOR CELLS BUT TOWARD OTHER TUMOR CELL TYPE.
***IN
SOME CASE CHILDREN AND MOTHER HAVE ANTIBODIES THAT ARE CYTOTOXIC FOR THE
NEUROBLASTOMA CELLS .
IN
OTHER CASES , THE SERUM DOES NOT KILL THE TUMOR CELLS BUT INSTEAD PROTECTS THEM
THROUGH BLOCKING FACTORS SUCH AN ANTIGEN - ANTIBODY COMPLEX.
·
TUMOR ASSOCIATED ANTIGENS [TAA]
INCREASES PROPORTIONALLY WITH TUMOR GROWTH AND DECREASES WITH TUMOR RESPONSE TO
TRT.
1.
NEOANTIGENS MAY EXIST IN THE NUCLEUS ,
THE CYTOPLASM, OR THE CELL MEMBRANE
2.
NEOANTIGENS MAY BE EXCRETED FROM
THE CELL.[HORMONES: HCG (TESTIS KC) -
ACTH ( LUNG KC).
ANTIGENS ASSOCIATED WITH HUMAN MALIGNANCY [NON SPECIFIC]
ANTIGEN |
TUMOR |
VIRAL 1.
HEPATITIS
B 2.
HUMAN
PAPILLOMA VIRUSES 16 AND 18 3.
EPSTEIN
BARR 4.
HUMAN T
CELL LEUKEMIA VIRUS I [HTLV-1] |
·
PRIMARY LIVER KC ·
CERVICAL CARCINOMA ·
BURKITT’S LYMPHOMA ·
NASOPHARYNGEAL KC ·
ADULT T CELL LEUKEMIA |
ONCOFETAL 1.
CARCINOEMBRYONIC 2.
ALPHA
PROTEIN |
·
COLORECTAL CARCINOMA ·
PANCREATIC CARCINOMA ·
PRIMARY LIVER KC ·
TESTICULAR AND
OVARIAN KC ·
GASTRIC AND
PANCREATIC KC |
OTHER 1.
MYELONEMA
PROTEINS 2.
PROSTATE
SPECIFIC ANTIGENS 3.
PROSTATIC
ACID PHOSPHATASE 4.
S-100
CALCIUM BINDING PROTEIN 5.
CA-125
GLYCOPROTEIN 6.
CA 19-9
GLYCOPROTEIN 7.
15-3
GLYCOPROTEIN |
·
MULTIPLE MYELOMA ·
PROSTATIC KC ·
PROSTATIC KC ·
MELANOMA ·
OVARIAN KC ·
PANCREATIC KC ·
BREAST - LUNG KC |
·
TAAs MAY BE ANTIGENS THAT ARE COMPLETELY
UNIQUE TO A PARTICULAR TUMOR IN A SPECIFIC PERSON. THEY ACCOMPANIES CARCINOGENE
INDUCED CANCERS.
1.
THE CARCINOGEN ACTS AS A MUTAGEN
2.
TAAs MORE COMMONLY ARE SIMILAR IN ALL
PEOPLE CARRYING A PARTICULAR TUMOR:
·
ANTIGENS = TUMOR SPECIFIC ANTIGENS
[TSAs] CAN BE FOUND IN MORE THAN ONE TYPE TUMORS OR EVEN IN NONMALIGNANT
DISEASES.
3.
SOME TUMORS EXPRESS NORMAL ANTIGENS IN
EXCESSIVE AMOUNTS:
·
MYELOMA PROTEINS [B CELLS OUT OF CONTROL
AND BECAME MALIGNANT]
·
COMMON ACUTE LYMPHOBLASTIC LEUKEMIA
ANTIGEN [ CALLA] = CHILDHOOD LEUKEMIA
-
NORMALLY , CALLA IS EXPRESSED ONLY ON B-CELL PROGENITORS , WHICH COMPRISE LESS
THAN 1% OF NORMAL BONE MARROW CELLS.