AA-amyloidosis in captive northern tree shrews (Tupaia belangeri)

2021 ◽  
pp. 030098582110668
Author(s):  
Annette Klein ◽  
Ute Radespiel ◽  
Felix Felmy ◽  
Tina Brezina ◽  
Malgorzata Ciurkiewicz ◽  
...  
Keyword(s):  
Renal Medulla ◽  
Aa Amyloidosis ◽  
Laboratory Findings ◽  
Tree Shrews ◽  
Tupaia Belangeri ◽  
Amyloid Deposits ◽  
High Prevalence ◽  
Inflammatory Processes ◽  
Congo Red Staining ◽  
Important Disease

A high prevalence of AA-amyloidosis was identified in a breeding colony of northern tree shrews ( Tupaia belangeri) in a retrospective analysis, with amyloid deposits in different organs being found in 26/36 individuals (72%). Amyloid deposits, confirmed by Congo red staining, were detected in kidneys, intestines, skin, and lymph nodes, characteristic of systemic amyloidosis. Immunohistochemically, the deposited amyloid was intensely positive with anti-AA-antibody (clone mc4), suggesting AA-amyloidosis. The kidneys were predominantly affected (80%), where amyloid deposits ranged from mild to severe and was predominantly located in the renal medulla. In addition, many kidneys contained numerous cysts with atrophy of the renal parenchyma. There was no significant association between concurrent neoplastic or inflammatory processes and amyloidosis. The lack of distinctive predisposing factors suggests a general susceptibility of captive T. belangeri to develop amyloidosis. Clinical and laboratory findings of a female individual with pronounced kidney alterations were indicative of renal failure. The observed tissue tropism with pronounced kidney alterations, corresponding renal dysfunction, and an overall high prevalence suggests amyloidosis as an important disease in captive tree shrews.

scholarly journals Renal Medullary Amyloidosis in Dorcas Gazelles

1989 ◽  
Vol 26 (2) ◽  
pp. 129-135 ◽  
Author(s):  
B. A. Rideout ◽  
R. J. Montali ◽  
R. S. Wallace ◽  
M. Bush ◽  
L. G. Phillips ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Renal Failure ◽  
Cause Of Death ◽  
Prevalence Rate ◽  
Interstitial Fibrosis ◽  
Renal Medulla ◽  
Cortical Lesions ◽  
Tubular Atrophy ◽  
Amyloid Deposits ◽  
High Prevalence

Between January 1976 and September 1987 renal medullary amyloidosis (RMA) was diagnosed in 17 Dorcas gazelles; the necropsy prevalence rate was 17/32 (53%). The most severe amyloid deposits were in the renal medulla; glomeruli were spared. Renal cortical lesions of interstitial fibrosis and tubular atrophy and dilatation significantly correlated with RMA ( P < 0.01) and were considered to be secondary changes. There were varying degrees of lymphoplasmacytic inflammation and tubular cast formation which did not significantly correlate with RMA. Amyloid was confirmed histochemically and by electron microscopy and was identified as AA type by the permanganate method. Progressive renal failure was the cause of death or necessitated euthanasia in 7/17 (41%) gazelles. RMA in Dorcas gazelles does not appear to be familial. A high prevalence of chronic or recurring Actinomyces (Corynebacterium) pyogenes infections may be an important factor.

Effective Anti-TNF-α Therapy Can Induce Rapid Resolution and Sustained Decrease of Gastroduodenal Mucosal Amyloid Deposits in Reactive Amyloidosis Associated with Rheumatoid Arthritis

2009 ◽  
Vol 36 (11) ◽  
pp. 2409-2415 ◽  
Author(s):  
TAKESHI KURODA ◽  
YOKO WADA ◽  
DAISUKE KOBAYASHI ◽  
SHUICHI MURAKAMI ◽  
TAKEHITO SAKAI ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Aa Amyloidosis ◽  
Laboratory Findings ◽  
Protein Levels ◽  
Amyloid A ◽  
Biopsy Specimens ◽  
Amyloid Deposits ◽  
Reactive Amyloidosis ◽  
Serum Amyloid A Protein ◽  
Before And After

Objective.To examine the effect of anti-tumor necrosis factor-α (anti-TNF) therapy in patients with reactive AA amyloidosis associated with rheumatoid arthritis (RA).Methods.Fourteen patients with reactive AA amyloidosis associated with RA were prospectively evaluated. Four patients were treated with infliximab and 10 with etanercept. The mean period of anti-TNF therapy was 20.1 ± 13.8 months. Laboratory findings and renal function were examined before and after initiation of anti-TNF therapy. In 9 patients the area of amyloid deposits in serial gastroduodenal mucosal biopsy specimens was examined and image analysis was performed.Results.C-reactive protein and serum amyloid A protein levels were significantly reduced after initiation of anti-TNF therapy. Twenty-four hour creatinine clearance improved in 4 patients, did not change in 5, and deteriorated in 3. Twenty-four hour urinary protein excretion was significantly decreased in 3 patients, not exacerbated in 6, and increased in 3 after initiation of anti-TNF therapy. The biopsy specimens from the 9 patients who underwent serial gastroduodenal biopsies showed significant decreases in the area of amyloid deposits, from 8.8% ± 6.4% to 1.6% ± 0.6% (p = 0.003) after initiation of anti-TNF therapy. Four patients showed a sustained decrease in the areas of amyloid deposits in their third biopsy specimens, and amyloid deposits were not detectable in 2.Conclusion.Our results indicate a striking effect of anti-TNF therapy for rapid removal and sustained disappearance of amyloid deposits in gastric mucosal tissue with amelioration of renal functions in patients with reactive amyloidosis due to RA.

scholarly journals Generalized AA-Amyloidosis in a Bat (Pipistrellus pipistrellus)

1996 ◽  
Vol 33 (4) ◽  
pp. 428-430 ◽  
Author(s):  
A. D. Gruber ◽  
R. P. Linke
Keyword(s):  
Monoclonal Antibodies ◽  
Salivary Glands ◽  
Potassium Permanganate ◽  
Congo Red ◽  
Chronic Wound ◽  
Aa Amyloidosis ◽  
Female Adult ◽  
Pipistrellus Pipistrellus ◽  
Amyloid Deposits ◽  
Congo Red Staining

Generalized amyloidosis was found to be the cause of death in a female adult insectivorous pipistrelle bat ( Pipistrellus pipistrellus) after chronic wound inflammation. Large amounts of amyloid were detected in liver, spleen, kidneys, stomach, intestine, lymphatic tissues, and endocrine and salivary glands. Congo red staining and green birefringence identified amyloid; the Congo red staining was sensitive to potassium permanganate oxidation. The amyloid was further classified immunohistochemically. The deposits reacted with two anti-human-AA-amyloid monoclonal antibodies in a peroxidase-antiperoxidase reaction, whereas no reaction was found with antibodies specific for other types of amyloid. Thus, the bat amyloid deposits were identified as generalized reactive AA-amyloidosis.

scholarly journals Systemic AA Amyloidosis in Captive Cheetahs (Acinonyx jubatus)

1997 ◽  
Vol 34 (6) ◽  
pp. 549-556 ◽  
Author(s):  
R. E. Papendick ◽  
L. Munson ◽  
T. D. O'Brien ◽  
K. H. Johnson
Keyword(s):  
Disease Surveillance ◽  
Inflammatory Diseases ◽  
Renal Amyloidosis ◽  
Potential Importance ◽  
Aa Amyloidosis ◽  
Papillary Necrosis ◽  
Acinonyx Jubatus ◽  
Amyloid Deposits ◽  
High Prevalence ◽  
Glomerular Involvement

Ongoing disease surveillance of necropsied captive cheetahs ( Acinonyx jubatus) ( n = 141) revealed a high prevalence of renal amyloidosis ( n = 54 [38%]; age 1 to 16 years). The prevalence increased from 20% in pre-1990 necropsies to 70% of cheetahs necropsied in 1995. In 74% of the cheetahs with amyloidosis, renal failure was determined to be the sole or partial cause of death. Papillary necrosis was seen only in affected cheetahs and involved 25% of these animals. Amyloid was present predominantly in the medullary interstitium, with minimal glomerular involvement. The amyloid deposits were immunohistochemically identified as AA type using antisera to both human and canine protein AA. A high percentage (52%) of animals with renal amyloid also had subsinusoidal hepatic AA amyloid deposits. Inflammatory diseases were identified in 100% of affected cheetahs. The most common inflammatory disease was chronic lymphoplasmacytic gastritis. The prevalence and severity of gastritis was higher in cheetahs with amyloidosis, and the prevalence of severe gastritis increased from 16% to 43%, coinciding with the increase in prevalence of amyloidosis. These findings suggest that cheetahs have a high prevalence of systemic amyloidosis in response to inflammation and that renal amyloidosis is an increasingly significant cause of morbidity and mortality in captive cheetah populations. Factors of potential importance in the apparent high prevalence of AA amyloidosis in cheetahs are currently being investigated in our laboratories.

Generalized AA-amyloidosis in Siberian Tigers (Panthera tigris altaica) with Predominant Renal Medullary Amyloid Deposition

1998 ◽  
Vol 35 (1) ◽  
pp. 70-74 ◽  
Author(s):  
C. Schulze ◽  
M. Brügmann ◽  
M. Böer ◽  
H.-P. Brandt ◽  
J. Pohlenz ◽  
...  
Keyword(s):  
Congo Red ◽  
Kidney Diseases ◽  
Amyloid Deposition ◽  
Panthera Tigris ◽  
Aa Amyloidosis ◽  
Familial Predisposition ◽  
Amyloid A ◽  
Panthera Tigris Altaica ◽  
Amyloid Deposits ◽  
Congo Red Staining

Generalized amyloidosis with predominant renal medullary amyloid deposition was found in four closely related Siberian tigers ( Panthera tigris altaica) suffering from end stage kidney diseases. Only minimal to mild amounts of amyloid were deposited in various organs outside the kidneys with individually variable organ involvement. The Congo red staining affinity of amyloid deposits was sensitive to potassium permanganate oxidation. The deposits were further characterized as being of the amyloid-A (AA) type by immunohistochemistry using the mouse monoclonal antibody mc4 directed against a conserved region of the human AA-protein. A combination of immunohistochemistry and Congo red staining was much more sensitive for the diagnosis of amyloid deposits than Congo red staining alone. With this combination, even minimal amyloid deposits were detected that had been missed in the first reading using Congo-red-stained slides alone. Since no common primary cause was identified, the amyloidosis was classified as idiopathic generalized AA-amyloidosis with a potential familial predisposition.

Clinical and anamnestic characteristics of patients with adenomyosis, accompanied by pelvic pain syndrome

GYNECOLOGY ◽  
2018 ◽  
Vol 20 (6) ◽  
pp. 77-80
Author(s):  
M R Orazov ◽  
V E Radzinsky ◽  
M B Khamoshina ◽  
A O Dukhin ◽  
L R Toktar ◽  
...  
Keyword(s):  
Pelvic Pain ◽  
Chronic Pelvic Pain Syndrome ◽  
Pain Syndrome ◽  
Reproductive Age ◽  
Pelvic Pain Syndrome ◽  
Common Disease ◽  
Contributing Factors ◽  
High Prevalence ◽  
Inflammatory Processes ◽  
History Of

Pelvic pain syndrome associated with adenomyosis is a common disease in women of reproductive age. Frequency of detection in the population varies from 10 to 53%. The aim - to study the clinical and anamnestic risk factors of pelvic pain, with adenomiose. Materials and methods. The study included 120 (n=120) patients with diffuse adenomyosis with pain and painless form of the disease who underwent examination and treatment in the gynecological Department of the Central clinical hospital №6 of Russian Railways in Moscow. Each patient was provided with an individual card, which was encrypted 171 sign. The studied parameters reflected the passport and anthropometric data, information about education, social status, presence of occupational hazards, complaints, illness. Results. Burdened gynecological and somatic histories, manifested a low health index, a more pronounced hereditary a family history of neoplastic diseases are contributing factors, and high prevalence of postponed surgeries, chronic, long-term ongoing inflammatory processes of the pelvic organs to create a favorable background for the further progression of chronic pelvic pain syndrome in adenomiose.

scholarly journals Comparison of Risk Factors in Patients with Normal Arteries and Coronary Disease After Infarction

1977 ◽  
Author(s):  
S. K. Durairaj ◽  
A. H. Khan ◽  
L. J. Haywood
Keyword(s):  
Risk Factors ◽  
Coronary Artery Disease ◽  
At Risk ◽  
Coronary Artery ◽  
Mexican American ◽  
Acute Attack ◽  
Similar Distribution ◽  
Laboratory Findings ◽  
High Prevalence ◽  
Artery Disease

Risk factors were compared in 42 patients (pts) with coronary artery disease (CAD) and 18 with radiographically patent arteries (RPA) on angiography performed three weeks to six months after documented myocardial infarction (Ml). All pts had typical clinical and laboratory findings during the acute attack. All pts were below age 50 and both groups had a similar distribution of racial background (Caucasian, black and Mexican-American). Psychiatric problems were not more frequent in either group. The data demonstrated a high prevalence of standard risk factors in the CAD group for hypertension (28 of 42 = 67%), hypercholesterolemia (25 of 42 = 60%) and smoking (17 of 42 = 64%), and similarly high prevalence of smoking (16 of 18 = 89%), heavy labor (12 of 18 = 61%) and obesity (9 of 18 = 50%) in the RPA group. Factors significantly more common in the CAD group as compared to the RPA group by the Chi Square test were:Hypertension (P < 0.001), hypercholesterolemia (P < 0.001), diabetes (P < 0.001), and family history (P < 0.05). Factors more common in the RPA group were heavy alcohol consumption (P < 0.001), smoking (P < 0.05), heavy laborer occupation (P < 0.001) and obesity (P < 0.001). The data suggest that risk factor screening would identify individuals at risk from coronary artery disease but would be unreliable in identifying individuals at risk for MI with RPA. Further study is indicated to determine what factors operate to produce ischemia and infarction in the RPA group of pts.

How tree shrews (Tupaia belangeri) perform in a searching task: Evidence for strategy use.

2001 ◽  
Vol 115 (4) ◽  
pp. 344-350 ◽  
Author(s):  
Alessandro Bartolomucci ◽  
Gabriel de Biurrun ◽  
Eberhard Fuchs
Keyword(s):  
Strategy Use ◽  
Tree Shrews ◽  
Tupaia Belangeri

Atrial fibrillation is associated with high levels of monocyte-platelet-aggregates and increased CD11b expression in patients with aortic stenosis

2016 ◽  
Vol 115 (05) ◽  
pp. 993-1000 ◽  
Author(s):  
Katharina Berndt ◽  
Sandy Wydra ◽  
Daniel Tarnowski ◽  
Peggy Barthel ◽  
Silvio Quick ◽  
...  
Keyword(s):  
Aortic Stenosis ◽  
Cd11b Expression ◽  
Flow Cytometric ◽  
High Prevalence ◽  
Close Relationship ◽  
Enhanced Expression ◽  
Quantification Analysis ◽  
Inflammatory Processes ◽  
Platelet Aggregates ◽  
First Time

SummaryA growing body of evidence suggests a pivotal role of inflammatory processes in AF in a bidirectional manner. Infiltrating leukocytes seem to promote both structural and electrical remodelling processes in patients with AF. Monocyte-platelets-aggregates (MPAs) are sensitive markers of both platelets and monocyte activation. So far it is not clear whether the content of MPAs is affected by AF. The present study examined the content of MPAs and the activation of monocytes in elderly patients with an aortic stenosis in dependence of AF. These patients are known to have a high prevalence of AF. Flow-cytometric quantification analysis demonstrated that patients with AF have an increased content of MPAs (207 ± 13 cells/μl vs 307 ± 21 cells/μl, p<0.001), and enhanced expression of CD11b on monocytes (p<0.001), compared to patients in stable sinus rhythm (SR). The number of CD14+/CD16+ monocytes were only slightly elevated in patients with AF. These findings were seen in patients with permanent AF. But also patients with paroxysmal AF, even when presenting in SR, the MPAs were increased by 50 % (p<0.05) as well as the CD11b expression, which was twice as high (p<0.05) compared to stable SR. These results demonstrate for the first time a dependency of MPAs and CD11b expression on monocytes in the presence of AF and support the notion of a close relationship between AF, thrombogenesis and inflammation. The content of MPAs and the extent of activation on monocytes appear promising as biomarkers for paroxysmal AF and as possible future targets for developing novel pharmacological therapeutic strategies.Supplementary Material to this article is available online at www.thrombosis-online.com.

scholarly journals Deposition, Clearance, and Reinduction of Amyloid A Amyloid in Interleukin 1 Receptor Antagonist Knockout Mice

2016 ◽  
Vol 54 (1) ◽  
pp. 99-110 ◽  
Author(s):  
K. Watanabe ◽  
K. Uchida ◽  
J. K. Chambers ◽  
N. Ushio ◽  
H. Nakayama
Keyword(s):  
Receptor Antagonist ◽  
Knockout Mice ◽  
Interleukin 1 ◽  
Recovery Process ◽  
Amyloid Deposition ◽  
Aa Amyloidosis ◽  
Amyloid A ◽  
Enhancing Factor ◽  
Amyloid Deposits ◽  
Amyloid Enhancing Factor

Amyloid A (AA) amyloidosis is characterized by the extracellular deposition of AA amyloid and results in the irreversible dysfunction of parenchymal organs. In experimental models, AA amyloid deposits are cleared following a decrease in circulating serum amyloid A (SAA) concentrations. Additional inflammatory stimuli during this recovery process may induce more severe amyloid redeposition. In the present study, we confirmed the deposition, clearance, and reinduction of AA amyloid deposits in interleukin 1 receptor antagonist knockout mice (IL-1raKO) and studied the SAA levels and amyloid-enhancing factor activity based on the time-dependent changes of amyloid deposition. Histopathologically, following initial (day 0) injection of amyloid-enhancing factor in combination with an inflammatory stimulus (silver nitrate [AgNO3]), amyloid deposition peaked by day 20, and its deposition gradually decreased after day 35. SAA concentrations in serum were precipitously elevated on day 1 but returned to normal levels by day 10, whereas the SAA dimer was detected in serum after day 45. An additional AgNO3 injection was administered to mice with amyloidosis on day 5, 10, 35, or 50, and all mice developed large amyloid deposits. Amyloid deposition was most severe in mice treated with AgNO3 on day 35. The inoculation of sera from mice with AA amyloidosis, combined with AgNO3, induced AA amyloidosis. Serum samples collected on days 35 and 50, which contained high concentrations of the SAA dimer, induced amyloidosis in a high proportion (83%) of mice. Therefore, increased SAA and/or its dimer in serum during the recovery process may markedly exacerbate the development of AA amyloidosis.

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