MINISTRY OF HEALTH CARE OF THE REPUBLIC
OF UZBEKISTAN
TASHKENT MEDICAL ACADEMY
“I APPROVE”
The head of
scientific methodological senate of Urgench branch of Tashkent Medical Academy
the c.n.s. Yuldashev B.S.
«___» _____________ 2015
Department: Natural science
Subject: BIOCHEMISTRY
THEME:
FUNCTIONS OF BIOGENIC AMINES. AMMONIA FORMATION IN THE
ORGANISM AND THE PATH OF ITS NEUTRALIZATION.
Educational - methodical working out
(For
teachers and students of medical Universities)
Urgench 2015
Composer: 1. S. Masharipov
– professor, the chief of the department of natural
subjects of TMA Urgench branch
2. N.N.Kurbanova – senior teacher
of the department of natural subjects
of TMA Urgench branch.
Reviewers: D. Dushamov – senior,
candidate of chemical subjects, the director of
the third Academic Lyceum in Urgench State
University.
B.
Samandarova – assistant professor of department of skin-sexual and
infectious diseases, microbiology
Methodological
manual was discussed in the meeting of scientific - methodological
senate ___
March 2015 year Protocol
№ __
Methodological
manual was approved in the senate of TMA
. ___ March 2015 year Protocol
№ __
Scientific secretary, c.n.s
docent N. Yu. Xudayberganov
Theme: Functions
of biogenic amines. Ammonia formation in the organism and the path of its
neutralization.
1.
A place of carrying out of study, equipment:
- Department
of Natural science, studying room;
- Evident
posters and banners;
- Tables;
-
Distributing stuffs;
- Panel of
reagents;
- Panel of
laboratory ware;
- Multimedia,
overhead projector, PhEC, cuvette with 1
cm of thickness
2. Duration of
studying of a theme:
- 4
hours.
3. Study purpose:
Explain to
students importance of processes of decarboxylation of amino acids, functions
of biogenic amines and a path of their neutralisation. Histaminum role in
development of allergic and inflammatory reactions. Paths of formation and
neutralisation of ammonia, the development cause of hyperammonemia. Use of the
received knowledge in diagnostics and treatment of various pathologies.
Tasks:
Student should know:
- Decarboxylation
of amino acids
- Functions
of biogenic amines and a path of their neutralisation
- Histaminum,
its role in development of allergic and inflammatory processes
- Antihistamine
drugs
- Paths of
neutralisation of ammonia
- Synthesis
of urea and its connection with transamination reactions
- Disturbance
of synthesis and removing of urea from an organism
- Hyperammonemia,
its causes and a consequence
Student should be able:
To perform
laboratory work - urea definition in blood serum.
4. Motivation:
Studying of
function of biogenic amines, ammonia formation in an organism and a path of its
neutralisation, hence, to study biochemical bases of development of diseases
and methods of their treatment. Disturbance of these processes lead to morbid
conditions. This knowledge for the future doctors of the general of a profile
for statement of the diagnosis and diseases.
5. Communications
between subject and inside subject:
Knowledge of
composition and properties of a connective tissue, and also biosynthesis and
pathologies bound to their changes is based on knowledge on bioorganic
chemistry, physiology, anatomy, histology. This knowledge is necessary for
mastering further such subjects, as pathological physiology, pharmacology,
therapy, surgery, rheumatology, etc. clinical disciplines.
6. The employment
maintenance.
6.1. Theoretical
part.
Decarboxylation
of amino acids and metabolism of biogenic amines
As a result of
eliminating a - carboxyl group of amino acids amines are formed. Products of
this reaction are the biogenic amines possessing physiological activity.
Thyrosinum, a tryptophan, 5-oksitriptofan, valine, a serine, Histidinum, a
glutamate and scale-oksiglutamat, 3,4-oksifenilalanin, Cysteinum, an arginine,
an ornithine, S-adenozilmetionin and an alpha-aminomalonat are exposed to
decarboxylation. These are the complete reactions proceeding with participation
of decarboxylases which coenzyme is Pyridoxalphosphatum. Decarboxylates possess
a high biological potency and their name is bound to it - biogenic amines. We
will bring some examples.
Biosynthesis of some
neurotransmitters from amino acids. The key step is the same in each case: a
PLP-dependant decarboxylation (shaded in pink).
Distinguish 4 phylums of decarboxylation of amino acids:
1. Alpha decarboxylation - significant for animal tissues.
Thus there is an eliminating of the carboxyl group located close in alpha
carbon atom. Products of the yielded reaction are СО2 and biogenic amines.
2. Omego-decarboxylation - significant for microorganisms.
For example, this path decarboxylation of aspartic acid to alpha lactamic acid
proceeds.
3. Decarboxylation with a transamination. In the yielded
reaction new amino acid and aldehyde is formed.
4. Decarboxylation by condensation of two moleculas. In
animal tissues sigma-aminolevulinic acid, sphingolipids, in plants biotin
synthesis are formed of glycine and succinyl-KoA.
Formation of Histaminum and its importance. Histaminum is formed in reaction of
decarboxylation of Histidinum in mast cells. Precipitates out in reply to
allergen presence.
Physiological
role of Histaminum:
· Dilating of arterioles and capillars that leads to
depression of arterial pressure;
· Rising of permeability of capillars;
· Originating of an intracranial hypertensia and a
headache, owing to a trichangiectasia of a brain and exudation of a liquid part
of a blood;
· Reduction of a smooth musculation of bronchi and
bronchospasm development;
· The raised formation of a gastric juice and a saliva.
Importance of biogenic amines in development of allergic
responses.
At a sensibilization antigens (proteinaceous and
polysaccharide nature, some medicines) from mast cells Histaminum
participating in development of allergic responses precipitates out. In some
minutes at repeated entering of the conforming antigen an acute anaphylaxis.
Exhaust of Histaminum by mast cells is bound by presence in their membrane of
specific receptors and antigen-antibody complex formations.
For prophylaxis and treatment of allergic responses
antihistamine drugs are widely used: Sanorinum, Pipolphenum, Dimedrol,
glucocorticoids, etc.
Serotonin is formed as a result of decarboxylation 5- oxytryptophan by
participation of ferment 5 - oxytryptophandecarboxylase.
Physiological role:
· Narrowing of a lumen of veins and development of an
arterial hypertensia;
· A thermoregulation, regulation of
activity of respiratory system, a glomerular filtration;
· A CNS mediator;
· Promotes development of allergic responses, a
dempink-syndrome, toxicoses of pregnant women, a carcinoid syndrome and a
hemorrhagic diathesis.
Serotonin is formed of a tryptophan in hypothalamus
neurones. Functions as probable neurotransmitter with the exciting character.
Gamma-aminobutyric acid (GABA) is formed in a brain
tissue from glutamate at participation glutamatedecarboxylase. In synapses
cerebrum and spinal cord concentration of GABA and glycine is high. GABA and
glycine carry out functions brake neurotransmitter.
Dofaminum is formed of Thyrosinum in kidney, adrenals,
synaptic ganglions, nerves. Is a mediator of inhibiting phylum, functions in a
black substance of the top department of a brainstem. In other cells is the
precursor of Noradrenalinum and adrenaline.
Noradrenalinum is formed as a result of Dofaminum
hydroxylation in cells of the excitatory tissue, marrow of adrenals. Functions
as a mediator in synaptic transfer of nervous impulses.
Adrenaline - a product of a methylation of Noradrenalinum
in cells of marrow of adrenals. Carries out hormone functions.
The inactivation of biogenic amines descends by
their deamination and oxidation. Neutralisation of biogenic amines is carried
out by an oxidative deamination with aldehyde and ammonia formation at
participation monoamine oxidase (MAO) and diamine oxidase (DAO).
MAO - its coenzyme is FAD, is localised in a choronomic
membrane of mitochondrions, participates in neutralisation primary, secondary
and tertiary amines. MAO can be a point of influence
of some medicines inhibiting or activating this ferment as change of
concentration of biogenic amines is at the bottom of some morbid conditions.
For example, at a parkinsonism decrease of amount of Dofaminum is observed, and
one of treatment methods is depression of rate of an inactivation of Dofaminum
under the influence of materials-inhibitors MAO.
DAO - a coenzyme Pyridoxalphosphatum, it is localised in a
cytoplasma, participates in neutralisation of Histaminum, putrescin, a
cadaverine and particulate aliphatic amines.
The formed aldehydes at participation aldehyde
dehydrogenaseacidify to organic acids.
Paths of formation of ammonia in organism:
1. Deamination of amino acids;
2. Deamination of biogenic amines;
3. Deamination of purine bases;
4. Disintegration pyrimidine bases;
5. Deamination of amidums of amino acids (asparagine and a
glutamine).
For 1 days at scission of protein of 100
g 19,4 g of ammonia are formed. In tissues ammonia contains in low
concentration and is in a kind ammonium ion (NH4 +). In a
blood its content-25-40 mkmol/l (0,4-0,7 mg/l). High concentration of ammonia
are toxic, especially for the excitatory cells clinically displayed in a
pernicious vomiting, excitation, a coma. Formed at a
deamination of amino acids ammonia (at physiological importance рН ammonia is in a kind of
ions of ammonium) is toxic and should be removed from an organism. The ammonium
ion can join directly in biological moleculas in several ways.
Paths of neutralisation of ammonia:
1. Formation of ammonium salts of organic acids;
2. Formation of amidums of amino acids;
3. Transaminations;
4. Creatinine synthesis;
5. Urea synthesis;
6. Formation of ammonium salts.
Ammonium salts of organic acids: ammonium Citras, ammonium Sodium
oxalatum, ammonium fumarate.
Asparagine and glutamine formation. They are the transport form of
ammonia. Aspartic and glutamic acids at participation asparagine synthase,
glutamine synthase and ATP attach ammonia to the first carbon atom. Most
activly these reactions proceed in a liver and kidney.
L-aspartate + ATP + NH3 → L-asparagine
+ AMP + Н3РО4
L-glutamate + ATP + NH3→ L-glutamine
+ AMP + Н3РО4
Formation ammonium salts. In kidney asparagine and a glutamine
under the influence of asparaginase and a glutaminase decompose, the formed
ammonia forms ammonium salts.
L-aspargin + Н2О → L-aspartate + NН3
L-glutamine + Н2О → L-glutamat + NН3
NH3 + H + + Cl → NH4Cl
In kidney they provide acid-base equilibrium maintenance,
prevent development of an acidosis and loss of ions of sodium. This path
decontaminates 0,3-0,4 g of ammonia.
The ammonia part in tissues is used for synthesis of new
amino acids (retransamination).
About 15 % of ammonia it is used for synthesis of a
creatinine by a
transmethylation. This process proceeds in 3 tissues: kidney, muscles and a
liver, with the assistance of 3 amino acids: an arginine, glycine and
methionine.
1. arginine+glycine - glycine-amidinotransferaza - guanidine
acetate(glycociamine) and an ornithine. Proceeds in kidneys and pancreas.
2. guanidine acetate + S-adenozilmetionin - a
methyltransferase - a creatine. Proceeds in a liver and a pancreas.
3. kreatine+ATP - creatinephospho kinase- a creatine
phosphate. Proceeds in muscles.
4. A creatine phosphate dephosphorylization - a creatinine.
About 2 % of a creatine in an organism turns to a creatinine.
In muscles creatine level - 25-55 g/kg, in a cardiac muscle - 15-30 g/kg, in a
brain tissue - 10-15/kg the Creatine precipitates out with urine only at
children, at adults for 1 days 4,4-17,6 mmol/days precipitate out with urine
there Is a certain connection between muscular mass and creatinine allocation.
Presence in urine of a creatine and activity depression creatinephospho kinase
in muscles testify about development of a dystrophia of muscles.
About 85 % of ammonia it is decontaminated in a liver in
ornithinic cycle. Urea synthesis - cyclic process consists of five reactions,
catalyzed by five separate ferments. The overall equation:
СO2+NH3+2H2O+Aspartate→
H2N-CO-NH2+Fumarat
Ornithine cycle is bound to a tricarbonic acid
cycle through fumarate.
Fumarate - malat - oxaloacetate- asparagine.
1 atom of nitrogen - at the expense of ammonia, 2
atom - aspartate amino groups.
From the analysis of process of synthesis of urea
follows:
Nitrogen including descends in two points. One of
atoms of nitrogen arrives in the form of NH3 in reaction 1 and is a product of
a deamination of amino acids, and another joins as a part of aspartate
(reaction 3). This second nitrogen can arrive in aspartate from any amino acid
by a transamination with oxaloacetate. Hence, atoms of nitrogen in urea have a
different parentage;
Ornithine cycle is bound to a citrate cycle as
oxaloacetate, necessary for a transamination, it is formed of fumarate in
reactions of a citrate cycle;
Process endergonic, demanding 3 mole АТР for
synthesis of one molecula of urea.
At insufficient activity ferments Ornithine cycle
arise hyperammonemia- morbid conditions accompanied by ammonia strengthening in
a blood.
Disturbances of synthesis of urea:
1. The Chronic hepatitis and a cirrhosis. At these diseases
are essentially broken the basic functions of hepatocytes, including urea
synthesis.
2. Hereditary:
Ornitin-karbamoil-transferase - hyperammonemia;
argininosuccinat synthase- citrullinuria;
argininosuccinat lyase- argininosuccinaturia.
1.
Disturbance of
metabolic processes.
In
blood serum the filtrate nitrogen compounds 15-25 mmol/l. From them:
40-50
% - an urea nitrogen,
25 %
- nitrogen of amino acids,
8 % -
ergotionin,
4 % -
uric acid,
5 % -
a creatine,
2,5 %
- a creatinine,
0,5 %
- an indican and ammonia.
Filtrate
nitrogen rising is called hyperammonemia.
At disturbance of function of nephroses urea level increases
in blood serum to 50-80 mm/l, at norm - 3,5-9,0 mm/l.
At a liver hyperammonemia pathology is bound to augmentation
of ammonia in level.
Urea cycle and reactions that feed amino groups into the
cycle. The enzymes catalyzing these reactions (named in the text) are distributed
between the mitochondrial matrix and the cytosol. One amino group enters the
urea cycle as carbamoyl phosphate, formed in the matrix; the other enters as
aspartate, formed in the matrix by transamination of oxaloacetato and
glutamate, catalyzed by aspartate aminotransferase. The urea cycle consists of
four steps. (1) Formation of citrulline from ornithine and carbamoyl phosphate
(entry of the first amino group); the citrulline passes into the cytosol. (2)
Formation of argininosuccinate through a citrullyn-AMP intermediate (entry of
the second amino group). (5) Formation of arginine from argininosuccinate;
this reaction releases fumarate, which enters the citric acid cycle. (A)
Formation of urea; this reaction also regenerates ornithine.
New pedagogical technologies used on
employment:
«Barin storm»
Scenario:
one theme and
students gets out express the opinions on the yielded theme. The secretary is
prescribed. Similar thoughts are united. 5-7 minutes are yielded. In the end the most interesting answers
precipitate out and estimate. The bad evaluation is not yielded.
This
method promotes development of speech, thinking of the student.
Questions of an
interactive method:
·
Importance of
decarboxylation of amino acids, functions of biogenic amines and a path of
their neutralisation.
·
Histaminum, its
role in development of allergic and inflammatory reactions.
·
Antihistamine
drugs.
·
Paths of
formation of ammonia.
·
Paths of
neutralisation of ammonia
·
Synthesis of urea
and its connection with transamination reactions.
·
Disturbance of
synthesis and removing of urea from an organism.
·
Hyperammonemia,
its causes and a consequence.
6.2. An analytical part
Situational
problems:
1. In an out-patient department the
patient with complaints to a various enanthesis and other allergic implications
has reverted. To what disturbance of an exchange of amino acids it is bound?
What biogenic amine and what ferment is necessary for defining for statement of
the correct diagnosis? Tactics of treatment of the doctor?
2. At
the patient to blood serum the high content of ions of ammonium and the
depressed level urea is defined. What tactics of the doctor? What kind
hyperammonemia? The development cause hyperammonemia? Treatment principles?
Tests.
1. One of the general paths of a
catabolism of amino acids is decarboxylation.
1. What bonds are thus formed:
A. Aldehydes
B. Acetyl CoA
C. Biogenic amines*
D. Nucleotides
E. Alcohols
2. Catalyze these reactions:
A. Decarboxylase*
B. Dehydrogenases
C. Transferases
D. Carboahydrase
E. Hydrolyzing enzymes
3. Coenzyme these enzymes are:
A. Thiamine pyrophosphate
B. Pyridoxal phosphate*
C. Tetrahydrofolic acid
D. Biotin
E. Lipoamide
2. Biogenic amines in an organism are
decontaminated.
1. What bonds are thus formed:
A. Ketones and amines
B. Aldehydes and ammonia*
C. Ammonia and alpha ketonic acids
D. Ammonia and dioxides
E. Aldehydes and amines
2. These reactions catalyze:
A. monoamino - And di oxidase*
B. monoamine oxidase and hydrolyzing
enzymes
C. diamine oxidaseand dehydrogenases
D. monoamine oxidase and hydratases
E. hydrolysis and dehydrogenases
3. Specify coenzymes MAO and DAO:
A. MAO - Pyridoxalphosphatum, DAO - a
thiamine pyrophosphate
B. MAO - a thiamine pyrophosphate, DAO -
Pyridoxalphosphatum
C. MAO - FAD, DAO - FMN
D. MAO - FAD, DAO - Pyridoxalphosphatum*
E. MAO - Pyridoxalphosphatum,
DAO – FAD
3. There are 4 kinds of
decarboxylation of amino acids:
A. Alpha-decarboxylation*
B. Omega - decarboxylation *
C. Decarboxylation which has been not
bound to a deamination
D. Decarboxylation bound with
transamination*
E. Decarboxylation bound to a
deamination
F. betta - Decarboxylation
G. Decarboxylation bound with molecular
condensation*
H. Scale – decarboxylation
4. Specify 3 representatives of the
biogenic amines formed as a result of decarboxylation of aromatic amino acids:
A. Tyramine
B. Tryptamine*
C. Histaminum
D. Dopamine*
E. Serotonin*
F. Phenilethilamine
5. Specify 5 physiological
properties of Histaminum:
A. Rising of arterial pressure
B. Dilating vascular vessels*
C. Permeability rising capillary*
D. Depression of permeability of
capillars
E. Rising of an intracranial pressure
and appearance of headache*
F. Intensifying of production of hydrochloric
acid in stomach*
G. Oppresses production of НСl in stomach
H. Participates in development allergic
reactions*
I.
Does not
cause an allergy
J. Reduces a smooth musculation
6. Specify 5
physiological properties of a serotonin:
A. Narrows blood-vessels*
B. Depresses arterial pressure
C. Promotes occurrence of bronchismus*
D. Relaxs muscles of bronchi
E. Causes an intestine atony
F. Raises a peristalsis of intestines*
G. Relaxs a smooth musculation of pots
H. Possesses antidiuretic effect*
I. Reduces diuresis*
J. Raises synthesis НСl in a stomach
7. Specify 3 representatives of
catecholamins:
A. Piperidic acid
B. dopamine*
C. noradrenaline*
D. Cadaverine
E. Putrescin
F. adrenalin*
8. Specify 3 paths of neutralisation
of biogenic amines:
A. In a liver by conjugation*
B. By hydroxylation
C. By deaminization*
D. By transamination
E. By methylation*
F. By carboxylation
9. Specify 3 paths of formation of
ammonia to an organism.
A. Deamination of amino acids*
B. Transamination of amino acids
C. Deamination of nucleotides*
D. Decarboxylation of amino acids
E. Reamination of amino acids
F. Deamination of biogenic
amines*
10. Specify 4 paths of neutralisation
of ammonia:
A. Participation in synthesis of
carbohydrates
B. Participation in asparagine synthesis
of glutamin*
C. Participation in synthesis of lipids
D. Participation in reactions
reamination of amino acids*
E. Participation in heme synthesis
F. Participation in synthesis of urea*
G. Participation in synthesis of
nucleotides
H. Formation of ammonium salt*
11. Specify 5 ferments of ornithine
cycle:
A. Carbomoil phosphate synthetase*
B. Arginine synthetase
C. Ornithine-karbamoil transferase*
D. Fumarase
E. Argininosuccinat lyase*
F. Ornithine synthetase
G. Carboxypeptidase
H. Argininosuccinat synthetase*
I. Transaminase
J. Arginase*
12. Specify 3 organs participating in
synthesis of a creatinine:
A. Kidney*
B. Liver*
C. Muscles*
D. Heart
E. Brain
F. Adrenals
13. Specify 3 amino acids participating
in synthesis of a creatinine:
A. Glycine*
B. Arginine*
C. Methionine*
D. Alanined
E. Glutamine
F. Asparagine
6.3. Practical part
Laboratory works on an employment
theme:
Definition
of the content of urea in blood serum.
Purpose:
to Master skills of definition
of urea in blood serum.
Carried out
stages (steps):
№
|
Action
|
Not
executed
(0
points)
|
Completely
correctly executed
|
1.
|
To take 2 rotary tubes. In the first to pour 0,8 ml distilled water, 0,2 ml
of blood serum and 1 ml of 10 % THUK, mix.
|
0
|
15
|
2.
|
In the second tube
(control) to pour 0,8 ml distilled water, 0,2 ml of standard solution of urea
and 1 ml of 10 % THUK, mix.
|
0
|
15
|
3.
|
In 15 minutes of the
tube to centrifuge during 10 mines at 1500 circulation/minutes
|
0
|
15
|
4.
|
To take from each tube
on 0,5 ml above precipitate in pure tubes and to add 0,5 ml of colour
reagent, to agitate.
|
0
|
15
|
5.
|
Contents of tubes to
hydrolyze during 20 mines in a boiling water bath, to cool running water.
|
0
|
5
|
6.
|
Intensity of a staining
of solutions colorimetric evaluate on FEC at a green light filter in a ditch
with length of a path 10 mm against control.
|
0
|
15
|
7.
|
To calculate the
content of urea with use of the conforming formula
|
0
|
10
|
8.
|
The analysis of the received results
|
0
|
10
|
|
Total
|
|
100
|
7. Forms of control of knowledge,
skills and abilities:
- The oral;
- The written;
- The decision of situational problems;
- Demonstration of the mastered practical
skills.
8. Criteria of an evaluation of
monitoring.
№
|
Progress
in %
|
Evaluation
|
Level
of knowledge of the student
|
1.
|
96-100
|
Perfect
«5»
|
The student has
completely answered all questions set by the teacher. Completely can explain
decarboxylating amino acids, function of biogenic amines and a path of their
neutralisation. Histaminum, its role in development of allergic and
inflammatory processes. Antihistamine drugs. Paths of neutralisation of
ammonia, synthesis of urea and its connection with transamination reactions.
Disturbance of synthesis and removing of urea from an organism.
hyperammonemia, its causes and a consequence.
Independently sums up
and makes decisions, creatively thinks. Correctly and creatively the decision
of situational problems makes, the answer proves. Creatively takes part in
interactive methods of education, does correct and substantiated conclusions.
Actively participates in laboratory works, independently does a conclusion.
Can prepare the indicative abstract of a high level, using the modern
information or the literature of last years, or incorporates till 7-10 the
Internet information.
|
2.
|
91-95
|
Perfect
«5»
|
The student correctly
and precisely answers the asked questions of the teacher. Independently also
can creatively explain the mechanism. On situational problems yields the
exact answer, perceives its sense. In interactive games participates actively.
Can prepare the indicative abstract of a high level, using the modern
information or the literature of last years, or incorporates till 7-10 the
Internet information. Uses the collected knowledge during employment for
performance of laboratory works.
|
3.
|
86-90
|
The student answers all
questions set by the teacher. Knows the mechanism of decarboxylating amino
acids, function of biogenic amines and a path of their neutralization.
Histaminum, its role in development of allergic and inflammatory processes.
Antihistamine drugs. Paths of neutralization of ammonia, synthesis of urea
and its connection with transamination reactions. Disturbance of synthesis
and removing of urea from an organism. hyperammonemia, its causes and a
consequence.
Independently and
logically thinks about its importance. Situational problems answers by means
of the teacher, but knows its reserving. In interactive games participates actively
and creatively. Can prepare the indicative abstract of a high level, using
the modern information or the literature of last years, or incorporates till
7-10 the Internet information. Uses the collected knowledge during employment
for performance of laboratory works.
|
4.
|
81-85
|
Good
«4»
|
The student answers all
questions set by the teacher, but supposes thus discrepancies. Knows the
mechanism Histaminum, its role in development of allergic and inflammatory
processes. Antihistamine drugs. Paths of neutralization of ammonia, synthesis
of urea and its connection with transamination reactions. Disturbance of
synthesis and removing of urea from an organism.
Answers questions of
situational problems. Actively participates in interactive games. Can prepare
the indicative abstract of a high level, using the modern information or the
literature of last years, or incorporates to 5-6 information of the Internet.
Uses the collected knowledge during employment for performance of laboratory
works.
|
5.
|
76-80
|
The student answers the
questions set by the teacher, but supposes discrepancies. Knows the mechanism
of a path of neutralization of ammonia, synthesis of urea and its connection
with transamination reactions. Disturbance of synthesis and removing of urea
from an organism. Hyperammonemia, its causes of a consequence.
At
the answer to questions of situational problems is at a loss. Actively and
creatively approaches to participation in interactive games. Can prepare the
indicative abstract of a high level, using the modern information or the
literature of last years, or incorporates to 3-4 information of the Internet.
Can perform laboratory works.
|
6.
|
71-75
|
The student answers not
all questions of the teacher. Can explain the mechanism of the Path of neutralization
of ammonia, synthesis of urea and its connection with transamination
reactions. Antihistamine drugs. Hyperammonemia, its causes and a consequence.
Answers questions of situational problems, but does not perceive its sense.
Participates in interactive games. Can prepare the indicative abstract, using
the modern information or the literature of last years, or incorporates to
1-2 information of the Internet. Knows sequence of performance of laboratory
works.
|
7.
|
66-70
|
Well
«3»
|
The student not
completely answers questions of the teacher. Is at a loss at the answer to
questions of situational problems. Passively participates in interactive
games. Does not perceive sense. Finds it difficult to explain them.
|
8.
|
61-65
|
The student not
completely answers questions. Cannot explain independently, does not perceive
their sense. Finds it difficult to answer questions of situational problems,
does not perceive its sense. Is at a loss in summarizing of laboratory works.
|
9.
|
55-60
|
The student not
completely answers questions. Independently and logically does not perceive
the mechanism to a theme. Cannot answer questions of situational problems.
Cannot explain sequence of carrying out of laboratory works.
|
10
|
54 and more low
|
Unsatis-factorily
«2»
|
The student does not
know a theme, is at a loss in performance of laboratory works.
|
9. Chronological card of activity.
№
|
Study stages
|
Study forms
|
Duration
(180 mines)
|
1.
|
Parenthesis of the
teacher (theme substantiation)
|
Oral
|
5
|
2.
|
Discussion of a theme
of laboratory research, evaluation of initial knowledge of students with use
of new pedagogical technologies
|
Oral
poll, explanation, discussion
|
50
|
3.
|
Carrying out of results
of discussion
|
Oral
|
10
|
4.
|
Representation of
indicatings, tasks on performance of laboratory works, an explanation of
veneering of the report of the performed work
|
Written
|
25
|
5.
|
Independent work of
students on mastering of practical skills
|
Performance of laboratory
work
|
55
|
6.
|
Finding-out of degree
of achievement of the purpose of study on the basis of the mastered
theoretical knowledge both by results of practical work and taking into
account it an evaluation of activity of bunch.
|
Oral poll, written poll, tests,
check of results of laboratory work, discussion, discussion
|
25
|
7.
|
The conclusion of the teacher on the
yielded study. An evaluation of knowledge of students on 100 mark system and
its announcement. A summer residence of the task for following employment
(the complete set of questions)
|
Information, questions for
independent work
|
10
|
10. Control questions.
1.
Paths of
formation of ammonia?
2.
Specify
sequence of the
ferments, participating synthesis urea.
3. With what can be associated
disturbance of synthesis urea?
4. Hyperammonemia, standard importance
of urea in blood serum and urine?
5. What ferments participates in
formation of biogenic amines?
6. Explain biological importance of
biogenic amines?
7. Role of histaminum in development of
allergic and inflammatory reactions?
8. Paths of disintegration of biogenic
amines?
9. Where synthesis of urea and what
ferments thus proceeds participate?
10. What methods it is possible to define urea level in
blood serum and urine?
11. Recommended literature
Basic:
1. N. V. Bhagavan «Medical biochemistry»
fourth edition Corbis Corporation/William Whitehurst, 2001y.
2. T.T.Berezov, B.F.Korovkin «Biological
chemistry» - Moscow 1990y.
3. R.A.Sobirova and others. Biological
chemistry - Т, 2006
4. A.J.Nikolaev «Biological
chemistry» - Tashkent, 1992y.
5. A.Lehninger «Principles of
biochemistry» fifth edition by W. H. Freeman and Company 2008.
6. «Harper's Illustrated Biochemistry» 28e
Robert K. Murray, David A Bender, Kathleen M. Botham, Peter J. Kennelly, Victor
W. Rodwell, P. Anthony Weil
Additional:
2. A.Wight and others «biological
chemistry Bases» 1,2,3 volume, Moscow 1981y.
3. L.S.Strajer
"Biochemistry" 1,2,3 volume, Moscow 1985y.
4. D.Mecler "Biochemistry" 1,2,3
volume, Moscow 1980y.
5. Z.Kru of "Biochemistry", Moscow 1979y.
6. E.A.Stroev «Biological chemistry» - Moscow 1986y.
7. A.Horst «Molecular bases of a
pathogenesis» Moscow 1992y.
8. www.tma.uzsi.net.
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