Becker's World of the Cell (9th Edition)
9th Edition
ISBN: 9780321934925
Author: Jeff Hardin, Gregory Paul Bertoni
Publisher: PEARSON
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Chapter 22, Problem 1Q
You have isolated a toxin from a previously undiscovered poisonous snake. You believe that it binds to sodium channels in nerve cell membranes that are normally tightly regulated, keeping them permanently open. Explain how you could use patch clamping to test your idea, using one of the specific variants of the patch-clamp technique in your answer.
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Please answer the following chart so I can understand how to do it.
Digoxin: Intravenous Bolus - Two Compartment Model
Drug
Digoxin
Route:
IV Bolus
Dose:
0.750 mg
Plasma Concentration Time Profile
Beta
Alpha
Time (hrs)
Conc (ng/ml)
LN
(ng/ml)
LN
(ng/ml)
LN
0.00
#NUM!
#NUM!
#NUM!
0.10
12.290
2.509
#NUM!
#NUMI
0.60
6.975
1.942
#NUM!
#NUMI
1.00
4.649
1.537
#NUM!
#NUMI
2.00
2.201
0.789
#NUM!
#NUM!
3.00
1.536
0.429
#NUM!
#NUM!
4.00
1.342
0.294
#NUM!
#NUM!
5.00
1.273
0.241
#NUM!
#NUMI
6.00
1.238
0.213
#NUM!
#NUM!
7.00
1.212
0.192
#NUM!
#NUM!
8.00
1.188
0.172
#NUMI
#NUM!
9.00
1.165
0.153
#NUM!
#NUMI
10.00
1.143
0.134
#NUMI
#NUM!
11.00
1.122
0.115
#NUM!
12.00
1.101
0.096
#NUMI
13.00
1.080
0.077
#NUMI
16.00
1.020
0.020
#NUMI
24.00
0.876
-0.132
#NUMI
Pharmacokinetic Parameters
Parameter
Value
Alpha
B
Beta
Units
ng/ml
hr-1
ng/ml
hr-1
CO
ng/ml
H.C
AUC
ng x hr/ml
Vc
Vbeta
Vss
C
L/hr
TK (alpha)
hr
TX (beta)
days
5+
F3
F4
F5
0+
F6
F7
%
6
95
14
#3
29
&
t
F8
F9
FW
EW
Linuron, a derivative of urea, is used as an herbicide. Linuron serum levels were measured in 4Kg
rabbits following a bolus IV injection of 10mg/kg.
Time (minutes)
Serum Linuron Levels (ug/ml)
following IV dose
10
15.48
20
8.60
30
5.90
45
3.78
60
2.42
90
1.49
120
0.93
180
0.60
240
0.41
300
0.29
360
0.22
Analyze this data and perform the necessary calculations to determine the following pharmacokinetic
parameters from the IV data: (5 points per parameter, 24 parameters/variables ■ 120 points
possible). You do NOT need to submit graphs or data tables.
Give the terminal regression line equation and R or R² value:
Give the x axis (name and units, if any) of the terminal line:
Give the y axis (name and units, if any) of the terminal line:
Give the residual regression line equation and R or R² value:
Give the x axis (name and units, if any) of the residual line:
Give the y axis (name and units, if any) of the residual line:
Chapter 22 Solutions
Becker's World of the Cell (9th Edition)
Ch. 22 - Ouabain is an African plant derivative that has...Ch. 22 - You have isolated a toxin from a previously...Ch. 22 - The poison produced by some species of Central and...Ch. 22 - Drugs that affect the reuptake of...Ch. 22 - The Truth About Nerve Cells. For each of the...Ch. 22 - QUANTITATIVE The Resting Membrane Potential. The...Ch. 22 - QUANTITATIVE Patch Clamping. Patch-clamp...Ch. 22 - The Equilibrium Potential. Answer each of the...Ch. 22 - QUANTITATIVE Heart Throbs. An understanding of...Ch. 22 - The All-or-None Response of Membrane Excitation. A...
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