scholarly journals Acute Phase Response in Enzootic Bovine Leukosis

2018 ◽  
Vol 68 (2) ◽  
pp. 155
Author(s):  
M. GUSEL ◽  
M. TUTUNCU ◽  
H. ALBAYRAK ◽  
E. OZAN ◽  
R. KOC ◽  
...  
Keyword(s):  
Acute Phase ◽  
Acute Phase Response ◽  
Pearson Correlation ◽  
Elisa Test ◽  
Phase Response ◽  
Infected Cattle ◽  
Enzootic Bovine Leukosis ◽  
Amyloid A ◽  
Bovine Leukosis ◽  
Hematologic Examination

In the present study, we evaluated acute phase response by detecting haptoglobin (Hp), serum amyloid A (SAA) and fibrinogen in cattle with enzootic bovine leukosis (EBL). A total of 60 Holstein cattle (≤3 years old), comprisingof 40 cattle infected with BLV, and 20 BLV-free healthy controls were enrolled in this study. Diagnosis of the BLV infection was performed by serology (ELISA and AGID) and PCR techniques. APPs were detected by commercial ELISA test kits using validated standard procedures as instructed. All the BLV-infected cattle were in good general health and had normal respiratory rates, pulse rates, body temperatures. However, 5 cattle had enlarged, hard, painless, movable superficial lymph nodes in infected group. APPs including Hp (p<0.001), fibrinogen (p<0.001), and SAA (p<0.05) concentrations were significantly higher in cattle with EBL compared to BLV-free cattle. On hematologic examination, total leukocyte, lymphocyte and granulocytes concentrations were significantly higher in infected cattle when compared tocontrols. In addition, Hp and SAA (p<0. 001) concentrations were significantly higher in symptomatic cattle than asymptomatic. The Pearson correlation revealed significant associations between APPs and total leukocyte and granulocytes; however, there was no correlation with lymphocyte. In conclusion, the results of this study showed increased acute phase response in BLV infected cattle.

Acute Phase Response in Enzootic Bovine Leukosis

2018 ◽  
Vol 68 (2) ◽  
pp. 155
Author(s):  
M. GUZEL ◽  
M. TUTUNCU ◽  
H. ALBAYRAK ◽  
E. OZAN ◽  
R. KOC ◽  
...  
Keyword(s):  
Acute Phase ◽  
Acute Phase Response ◽  
Pearson Correlation ◽  
Elisa Test ◽  
Phase Response ◽  
Infected Cattle ◽  
Enzootic Bovine Leukosis ◽  
Amyloid A ◽  
Bovine Leukosis ◽  
Hematologic Examination

In the present study, we evaluated acute phase response by detecting haptoglobin (Hp), serum amyloid A (SAA) and fibrinogen in cattle with enzootic bovine leukosis (EBL). A total of 60 Holstein cattle (≤3 years old), comprising of 40 cattle infected with BLV, and 20 BLV-free healthy controls were enrolled in this study. Diagnosis of the BLV infection was performed by serology (ELISA and AGID) and PCR techniques. APPs were detected by commercial ELISA test kits using validated standard procedures as instructed. All the BLV-infected cattle were in good general health and had normal respiratory rates, pulse rates, body temperatures. However, 5 cattle had enlarged, hard, painless, movable superficial lymph nodes in infected group. APPs including Hp (p<0.001), fibrinogen (p<0.001), and SAA (p<0.05) concentrations were significantly higher in cattle with EBL compared to BLV-free cattle. On hematologic examination, total leukocyte, lymphocyte and granulocytes concentrations were significantly higher In infected cattle when compared to controls. In addition, Hp and SAA (p<0. 001) concentrations were significantly higher in symptomatic cattle than asymptomatic. The Pearson correlation revealed significant associations between APPs and total leukocyte and granulocytes; however, there was no correlation with lymphocyte. In conclusion, the results of this study showed increased acute phase response in BLV infected cattle.

The acute phase response and C-reactive protein

2020 ◽  
pp. 2199-2207
Author(s):  
Mark B. Pepys
Keyword(s):  
Acute Phase ◽  
Acute Phase Response ◽  
Serum Amyloid A ◽  
Acute Phase Proteins ◽  
Phase Response ◽  
Serum Amyloid ◽  
C Reactive Protein ◽  
Reactive Protein ◽  
Amyloid A ◽  
Serum Amyloid A Protein

The acute phase response—trauma, tissue necrosis, infection, inflammation, and malignant neoplasia induce a complex series of nonspecific systemic, physiological, and metabolic responses including fever, leucocytosis, catabolism of muscle proteins, greatly increased de novo synthesis and secretion of a number of ‘acute phase’ plasma proteins, and decreased synthesis of albumin, transthyretin, and high- and low-density lipoproteins. The altered plasma protein concentration profile is called the acute phase response. Acute phase proteins—these are mostly synthesized by hepatocytes, in which transcription is controlled by cytokines including interleukin 1, interleukin 6, and tumour necrosis factor. The circulating concentrations of complement proteins and clotting factors increase by up to 50 to 100%; some of the proteinase inhibitors and α‎1-acid glycoprotein can increase three- to fivefold; but C-reactive protein (CRP) and serum amyloid A protein (an apolipoprotein of high-density lipoprotein particles) are unique in that their concentrations can change by more than 1000-fold. C-reactive protein—this consists of five identical, nonglycosylated, noncovalently associated polypeptide subunits. It binds to autologous and extrinsic materials which contain phosphocholine, including bacteria and their products. Ligand-bound CRP activates the classical complement pathway and triggers the inflammatory and opsonizing activities of the complement system, thereby contributing to innate host resistance to pneumococci and probably to recognition and safe ‘scavenging’ of cellular debris. Clinical features—(1) determination of CRP in serum or plasma is the most useful marker of the acute phase response in most inflammatory and tissue damaging conditions. (2) Acute phase proteins may be harmful in some circumstances. Sustained increased production of serum amyloid A protein can lead to the deposition of AA-type, reactive systemic amyloid.

Serum amyloid A and high density lipoproteins during the acute phase response

1988 ◽  
Vol 18 (6) ◽  
pp. 619-626 ◽  
Author(s):  
LINDA L. BAUSSERMAN ◽  
D. N. BERNIER ◽  
K. P. W. J. McADAM ◽  
P. N. HERBERT
Keyword(s):  
Acute Phase ◽  
Acute Phase Response ◽  
Serum Amyloid A ◽  
High Density ◽  
Phase Response ◽  
Serum Amyloid ◽  
High Density Lipoproteins ◽  
Amyloid A

scholarly journals Acute phase response in the primiparous dairy cows after repeated percutaneous liver biopsy during the transition period

2016 ◽  
Vol 19 (2) ◽  
pp. 393-399 ◽  
Author(s):  
P. Jawor ◽  
A. Brzozowska ◽  
K. Słoniewski ◽  
Z.M. Kowalski ◽  
T. Stefaniak
Keyword(s):  
Body Temperature ◽  
Liver Biopsy ◽  
Dairy Cows ◽  
Acute Phase ◽  
Acute Phase Response ◽  
Serum Amyloid A ◽  
Transition Period ◽  
Phase Response ◽  
Serum Amyloid ◽  
Amyloid A

Abstract The aim of this study was to evaluate the acute phase response of dairy cows to repeated liver biopsy in order to estimate the safety of this procedure during the transition period. Liver biopsies (up to 1000 mg of liver tissue) were conducted twice a day, 7 days before expected parturition and 3 days after calving. The number of needle insertions for each biopsy was recorded and was dependent on the amount of obtained tissue. Blood samples were taken on day 7 before expected parturition, then on days 3, 4, 7 and 14 after calving. Body temperature was measured daily in all 30 cows from day 3 until day 14 after calving. The concentrations of haptoglobin, serum amyloid A, fibrinogen and interleukin-6 were determined in serum and plasma. In 16.7% of cows, the rectal body temperature rose by ≥ 0.5°C on the day after liver biopsy. Although the concentrations of haptoglobin, serum amyloid A and fibrinogen increased significantly after calving (p<0.01), there was no influence of the number of biopsies on the acute phase reaction and repeated biopsy during the transition period had no effect on body temperature. Therefore, the procedure may be regarded as safe for cows during the transition period.

Strong relationships between mediators of the acute phase response and fatty liver in dairy cows

2005 ◽  
Vol 85 (2) ◽  
pp. 165-175 ◽  
Author(s):  
B. N. Ametaj ◽  
B. J. Bradford ◽  
G. Bobe ◽  
R. A. Nafikov ◽  
Y. Lu ◽  
...  
Keyword(s):  
Fatty Liver ◽  
Dairy Cows ◽  
Acute Phase ◽  
Acute Phase Response ◽  
Phase Response ◽  
Prostaglandin E ◽  
Total Lipids ◽  
Amyloid A ◽  
Tnf Α ◽  
Strong Relationships

The objective of this study was to investigate the relationship between activation of acute phase response and fatty liver in transition dairy cows. Fatty liver was induced in dairy cows by feeding 8 kg of cracked corn 1 mo before the expected day of parturition. Liver and blood samples were obtained at days -4, 3, 8, 12, 14, 22, 27, and 36 postpartum. Cows that developed fatty liver (n = 4) reached peak total lipids in the liver at day 12 postpartum with 11.4% (wet wt.) compared with 6.6% in control cows (n = 4). Cows with fatty liver had greater plasma tumor necrosis factor-alpha (TNF-α), nonesterified fatty acids (NEFA), and lower lactate concentrations than did control cows at day -4. During highest concentrations of total lipids in the liver, for at least one time-point, fatty-liver cows had greater concentrations of plasma serum amyloid A (SAA), haptoglobin, and NEFA and lower concentrations of calcitonin gene-related peptide (CGRP), prostaglandin E2 (PGE2), cortisol, and TNF-α than did control cows. Concentrations of total lipids in the liver at 12 d postpartum were correlated (a) positively with plasma TNF-α, SAA, and NEFA and negatively with plasma CGRP before calving, (b) positively with plasma SAA, haptoglobin, and NEFA and negatively with plasma PGE2, CGRP, total cholesterol, and glucose at days 3, 8, and 12 postpartum, and (c) negatively with concentrations of plasma glucose, lactate, and total bilirubin after day 12 postpartum. In conclusion, this study indicates that the acute phase response occurs in cows with fatty liver as well as strong relationships between mediators of immune response and fatty liver. Key words: Acute phase response, fatty liver, dairy cow

Association Between Stent Implantation and Progression of Nontarget Lesions in a Rabbit Model of Atherosclerosis

2021 ◽  
Author(s):  
Jing Ma ◽  
Xiaoling Liu ◽  
Lei Qiao ◽  
Linlin Meng ◽  
Xingli Xu ◽  
...  
Keyword(s):  
Protein Expression ◽  
Acute Phase ◽  
Systemic Inflammation ◽  
Stent Implantation ◽  
Acute Phase Response ◽  
Rabbit Model ◽  
Serum Levels ◽  
Phase Response ◽  
Plaque Burden ◽  
Amyloid A

Background: Progression of nontarget lesions (NTLs) after percutaneous coronary intervention (PCI) has been reported. However, it remains unknown whether progression of NTLs was causally related to stenting. This study was undertaken to test the hypothesis that stent implantation triggers acute phase response and systemic inflammation which may be associated with progression of NTLs. Methods: Thirty New Zealand rabbits receiving endothelial denudation and atherogenic diet were randomly divided into stenting, sham, and control groups. Angiography and intravascular ultrasonography were performed in the stenting and sham groups, and stent implantation performed only in the stenting group. Histopathologic study was conducted and serum levels of APPs (acute phase proteins) measured in all rabbits. Proteomics analysis was performed to screen the potential proteins related to NTLs progression after stent implantation. The serum levels of APPs and inflammatory cytokines were measured in 147 patients undergoing coronary angiography or PCI. Results: Plaque burden in the NTLs was significantly increased 12 weeks after stent implantation in the stenting group versus sham group. Serum levels of APPs and their protein expression in NTLs were significantly increased and responsible for stenting-triggered inflammation. In patients receiving PCI, serum levels of SAA-1 (serum amyloid A protein 1), CRP (C-reactive protein), TNF (tumor necrosis factor)-α, and IL (interleukin)-6 were substantially elevated up to 1 month post-PCI. Conclusions: In a rabbit model of atherosclerosis, stent implantation triggered acute phase response and systemic inflammation, which was associated with increased plaque burden and pathological features of unstable plaque in NTLs. The potential mechanism involved vessel injury-triggered acute phase response manifested as increased serum levels of SAA-1, CRP, and LBP (lipopolysaccharide-binding protein) and their protein expression in NTLs. These findings provided a new insight into the relation between stent implantation and progression of NTLs, and further studies are warranted to clarify the detailed mechanism and clinical significance of these preliminary results. REGISTRATION: URL: http://www.chictr.org.cn ; Unique identifier: ChiCTR1900026393.

The acute phase response in Syrian hamsters elevates apolipoprotein serum amyloid A (apoSAA) and disrupts lipoprotein metabolism

Amyloid ◽  
1996 ◽  
Vol 3 (4) ◽  
pp. 261-269 ◽  
Author(s):  
Wayne A. Gonnerman ◽  
May Lima ◽  
Jean D. Sipe ◽  
Kenneth C. Hayes ◽  
Edgar S. Cathcart
Keyword(s):  
Acute Phase ◽  
Acute Phase Response ◽  
Serum Amyloid A ◽  
Lipoprotein Metabolism ◽  
Phase Response ◽  
Serum Amyloid ◽  
Syrian Hamsters ◽  
Amyloid A
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