scholarly journals Kinetic simulation method of C-reactive protein in beagle dogs during acute inflammation

2017 ◽  
Vol 15 (2) ◽  
pp. 120-123
Author(s):  
Takashi Kuribayashi
Keyword(s):  
Rate Constant ◽  
Inflammatory Responses ◽  
Elimination Rate ◽  
Simulation Method ◽  
Elimination Rate Constant ◽  
Enzyme Linked Immunosorbent Assay ◽  
Serum Concentrations ◽  
Beagle Dogs ◽  
C Reactive Protein ◽  
Reactive Protein

The half-life ( t1/2) of C-reactive protein (CRP) and its ability to stimulate weak inflammatory responses were investigated in beagle dogs. Four beagle dogs were administered 20 mg/kg indomethacin and blood was collected from the cephalic vein pre-dosing and at 24, 48, 72, 96, 144, 192, 240, 312, and 360 h post-administration. The serum concentrations of CRP were measured by enzyme-linked immunosorbent assay. The serum t1/2 was calculated using the equation 0.693/elimination rate constant. The serum concentration of CRP beyond 192 h post-administration declined to levels in the normal range. The t1/2 was 148.3 h, which is considered to be the essential t1/2 of CRP. The simulation of CRP serum concentrations at arbitrary times using the elimination rate constant obtained in this study became possible.

Effect of Electroacupuncture on the Inflammatory Response in Patients with Acute Pancreatitis: An Exploratory Study

2015 ◽  
Vol 33 (2) ◽  
pp. 115-120 ◽  
Author(s):  
Shi-Feng Zhu ◽  
Hui Guo ◽  
Rong-Rong Zhang ◽  
Yumei Zhang ◽  
Juan Li ◽  
...  
Keyword(s):  
Acute Pancreatitis ◽  
Inflammatory Responses ◽  
Length Of Hospital Stay ◽  
Control Group ◽  
Serum Concentrations ◽  
C Reactive Protein ◽  
Control Groups ◽  
Reactive Protein ◽  
Registration Number ◽  
And Control

Objectives To examine the effects of electroacupuncture (EA) on inflammatory responses in patients with acute pancreatitis (AP). Methods Eighty patients with mild or severe AP were randomly allocated to a control group or an EA group. All patients were managed conservatively. In addition, the EA group received acupuncture for 30 min per day for 7 days at bilateral points ST36, LI4, TE6, ST37 and LR3. Interleukin (IL)-6, IL-10 and C-reactive protein (CRP) levels were measured on admission and on day 7. The time to re-feeding and length of stay in hospital were also recorded. Results A total of 58 patients provided complete data. The characteristics of the patients in the EA and control groups were similar. After 7 days the serum concentrations of IL-10 were higher in the EA group than in the control group (mild AP: 6.2±1.2 vs 5.2±0.9 pg/mL, p<0.05; severe AP: 14.9±7.8 vs 7.9±6.3 pg/mL, p<0.05). For patients with severe AP, the CRP level in the EA group was lower than in the control group (p<0.05). Conclusions EA may reduce the severity of AP by inducing anti-inflammatory effects and reducing the time to re-feeding; however, it did not reduce the length of hospital stay. Trial Registration Number ChiCTR-TRC-13003572.

C-REACTIVE PROTEIN SERUM CONCENTRATIONS IN WELL-TRAINED ATHLETES

1982 ◽  
Vol 14 (2) ◽  
pp. 172
Author(s):  
B. Dufaux ◽  
U. Order ◽  
H. Geyer ◽  
W. Hollmann
Keyword(s):  
Serum Concentrations ◽  
C Reactive Protein ◽  
Reactive Protein ◽  
Protein Serum

Semiparametric approach to pharmacokinetic-pharmacodynamic data

1989 ◽  
Vol 256 (4) ◽  
pp. R1005-R1010
Author(s):  
D. Verotta ◽  
S. L. Beal ◽  
L. B. Sheiner
Keyword(s):  
Steady State ◽  
Rate Constant ◽  
Drug Concentration ◽  
Venous Blood ◽  
Time Lag ◽  
Elimination Rate ◽  
Hysteresis Loops ◽  
Real Data ◽  
Elimination Rate Constant ◽  
Arterial Blood

A semiparametric model for analysis of pharmacokinetic (PK) and pharmacodynamic (PD) data arising from non-steady-state experiments is presented. The model describes time lag between drug concentration in a sampling compartment, e.g., venous blood (Cv), and drug effect (E). If drug concentration at the effect site (Ce) equilibrates with arterial blood concentration (Ca) slower than with Cv, a non-steady-state experiment yields E vs. Cv data describing a counterclockwise hysteresis loop. If Ce equilibrates with Ca faster than with Cv, clockwise hysteresis is observed. To model hysteresis, a parametric model is proposed linking (unobserved) Ca to Cv with elimination rate constant kappa ov and also linking Ca to Ce with elimination rate constant kappa oe. When kappa oe is greater than (or less than) kappa ov clockwise (or counterclockwise) hysteresis occurs. Given kappa oe and kappa ov, numerical (constrained) deconvolution is used to obtain the disposition function of the arterial compartment (Ha), and convolution is used to calculate Ce given Ha. The values of kappa oe and kappa ov are chosen to collapse the hysteresis loops to single curves representing the Ce-E (steady-state) concentration-response curve. Simulations, and an application to real data, are reported.

scholarly journals Novel phenotypes of coronavirus disease: a temperature-based trajectory model

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yanfei Shen ◽  
Dechang Chen ◽  
Xinmei Huang ◽  
Guolong Cai ◽  
Qianghong Xu ◽  
...  
Keyword(s):  
Hospital Mortality ◽  
Clinical Outcomes ◽  
Odds Ratio ◽  
Gamma Globulin ◽  
Inflammatory Responses ◽  
Potential Temperature ◽  
C Reactive Protein ◽  
Reactive Protein ◽  
Fever Onset ◽  
Tertiary Hospitals

Abstract Background Coronavirus disease has heterogeneous clinical features; however, the reasons for the heterogeneity are poorly understood. This study aimed to identify clinical phenotypes according to patients’ temperature trajectory. Method A retrospective review was conducted in five tertiary hospitals in Hubei Province from November 2019 to March 2020. We explored potential temperature-based trajectory phenotypes and assessed patients’ clinical outcomes, inflammatory response, and response to immunotherapy according to phenotypes. Results A total of 1580 patients were included. Four temperature-based trajectory phenotypes were identified: normothermic (Phenotype 1); fever, rapid defervescence (Phenotype 2); gradual fever onset (Phenotype 3); and fever, slow defervescence (Phenotype 4). Compared with Phenotypes 1 and 2, Phenotypes 3 and 4 had a significantly higher C-reactive protein level and neutrophil count and a significantly lower lymphocyte count. After adjusting for confounders, Phenotypes 3 and 4 had higher in-hospital mortality (adjusted odds ratio and 95% confidence interval 2.1, 1.1–4.0; and 3.3, 1.4–8.2, respectively), while Phenotype 2 had similar mortality, compared with Phenotype 1. Corticosteroid use was associated with significantly higher in-hospital mortality in Phenotypes 1 and 2, but not in Phenotypes 3 or 4 (p for interaction < 0.01). A similar trend was observed for gamma-globulin. Conclusions Patients with different temperature-trajectory phenotypes had different inflammatory responses, clinical outcomes, and responses to corticosteroid therapy.

scholarly journals Cytokine status in patients with myocardial infarction as a possible predictor of coronary atherosclerosis severity

2020 ◽  
Vol 19 (3) ◽  
pp. 2316
Author(s):  
O. V. Khlynova ◽  
E. A. Shishkina ◽  
N. I. Abgaryan
Keyword(s):  
Myocardial Infarction ◽  
Coronary Artery ◽  
Coronary Atherosclerosis ◽  
Enzyme Linked Immunosorbent Assay ◽  
Control Group ◽  
C Reactive Protein ◽  
Reactive Protein ◽  
Coronary Artery Atherosclerosis ◽  
Tnf Α ◽  
Atherosclerosis Severity

Aim. To study the association of cytokine status with coronary atherosclerosis severity in patients with myocardial infarction (MI).Material and methods. Between 11.2018 and 07.2019, 92 patients hospitalized with MI in Perm Clinical Cardiology Dispensary were included in the study. The control group consisted of 23 patients with stable coronary artery disease. In addition to the standard examination, enzyme-linked immunosorbent assay was used to determine the levels of interleukins (IL)-6, -10, tumor necrosis factor alpha (TNF-α), C-reactive protein.Results. Significant increase in plasma IL-6, TNF-α and C-reactive protein levels in MI patients compared with the control group. The increase in the concentration of IL-6, TNF-α, as well as the IL-6/IL-10 ratio occurs in proportion to coronary atherosclerosis severity. A direct correlation of Gensini score with IL-6, TNF-α, and IL-6/IL-10 ratio was established.Conclusion. Further study of cytokine profile parameters in MI patients will help a clearer understanding pathogenesis of coronary artery atherosclerosis. An increase in concentrations of IL-6, TNF-α, and IL-6/IL-10 ratio is associated with an increase in coronary atherosclerosis severity and can be used in practice for its prediction.

scholarly journals Pharmacokinetics of human chorionic gonadotropin after i.m. administration in goats (Capra hircus)

Reproduction ◽  
2012 ◽  
Vol 144 (1) ◽  
pp. 77-81 ◽  
Author(s):  
M Saleh ◽  
M Shahin ◽  
W Wuttke ◽  
M Gauly ◽  
W Holtz
Keyword(s):  
Rate Constant ◽  
Chorionic Gonadotropin ◽  
Human Chorionic Gonadotropin ◽  
Half Life ◽  
Absorption Rate ◽  
Elimination Rate ◽  
Elimination Rate Constant ◽  
Capra Hircus ◽  
Absorption Rate Constant ◽  
Biological Half Life

The present investigation addresses the pharmacokinetics of human chorionic gonadotropin (hCG), intramuscularly (i.m.) administered to goats. Nine pluriparous does of the Boer goat breed, 2–6 years of age and weighing 45–60 kg, were administered 500 IU hCG (2 ml Chorulon) deep into the thigh musculature 18 h after superovulatory FSH treatment. Blood samples were drawn from the jugular vein at 2 h intervals for the first 24 h, at 6 h intervals until 42 h, and at 12 h intervals until 114 h after administration. After centrifugation, plasma hCG concentrations were determined by electrochemiluminescence immunoassay. Pharmacokinetical parameters were as follows: lag time, 0.4 (s.e.m. 0.1) h; absorption rate constant, 0.34 (s.e.m. 0.002) h; absorption half-life, 2.7 (s.e.m. 0.5) h; elimination rate constant, 0.02 (s.e.m. 0.002) h; biological half-life, 39.4 (s.e.m. 5.1) h; and apparent volume of distribution, 16.9 (s.e.m. 4.3) l. The plasma hCG profile was characterized by an absorption phase of 11.6 (s.e.m. 1.8) h and an elimination phase of 70.0 (s.e.m. 9.8) h, with considerable individual variation in bioavailability and pharmacokinetical parameters. Biological half-life was negatively correlated (P<0.05) with peak concentration (r=−0.76), absorption rate constant (r=−0.78), and elimination rate constant (r=−0.87). The results indicate that after rapid absorption, hCG remains in the circulation for an extended period. This has to be taken into account when assessing the stimulatory response to hCG treatment on an ovarian level.

scholarly journals Alterations of pancreatic functions and lipid profiles in dairy cows with left displacement of the abomasum

2019 ◽  
Vol 64 (No. 5) ◽  
pp. 204-208
Author(s):  
Z Ismail ◽  
AM Al-Majali ◽  
O Al-Rawashdeh ◽  
M Daradka ◽  
M Mohaffel
Keyword(s):  
High Density Lipoprotein ◽  
Dairy Cows ◽  
Total Cholesterol ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
High Density ◽  
Low Density ◽  
Serum Concentrations ◽  
C Reactive Protein ◽  
Reactive Protein

The objectives of this study were to determine the serum activities of the pancreatic enzymes amylase, lipase, trypsinogen 1 and trypsinogen 2, serum concentrations of total cholesterol, high density lipoprotein, low-density lipoprotein and triglycerides and serum inflammatory indicators, namely C-reactive protein and procalcitonin, in Holstein-Friesian dairy cows with left displacement of the abomasum (LDA). A total of 60 cows (30 LDA-affected and 30 healthy) were included in the study. Laboratory analyses were performed using commercially available ELISA kits and chemical reagents according to the manufacturers’ recommendations. There was a significant increase (P ≤ 0.05) in the activities of lipase, trypsinogen 1 and trypsinogen 2 in LDA-affected cows compared to healthy cows. Amylase concentrations, however, remained unchanged. The serum concentrations of total cholesterol and high-density lipoprotein were significantly (P ≤ 0.05) increased in LDA-affected cows while the concentrations of low-density lipoprotein and triglycerides were significantly (P ≤ 0.05) decreased compared to healthy cows. Procalcitonin and C-reactive protein concentrations were significantly (P ≤ 0.05) increased in LDA-affected cows compared to healthy cows. This study indicates that displacement of the abomasum may be associated with significant pathological effects in the pancreas that may affect cows in the post-operative period.

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