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Related Concept Videos

Hypersensitivity Reactions: Immune-Complex Reactions01:19

Hypersensitivity Reactions: Immune-Complex Reactions

128
Type III hypersensitivity reactions occur when antigen–antibody complexes form and activate the complement system. Normally, these complexes help the clearance of antigens by phagocytes and red blood cells. However, when large numbers of immune complexes are present, they can deposit in tissues—particularly in the walls of blood vessels—leading to inflammation and tissue injury. These deposits trigger complement activation and neutrophil recruitment, resulting in serum...
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Hypersensitivity Reactions: Cytolytic Reactions01:01

Hypersensitivity Reactions: Cytolytic Reactions

118
Type II hypersensitivity involves IgG and IgM antibodies targeting cell surface antigens, leading to cell destruction. This can occur through complement activation, antibody-dependent cell-mediated cytotoxicity (ADCC), or acting as opsonins for phagocytosis. When excessive, these reactions cause significant tissue damage.Drug-induced hemolytic anemia is a common example, where drugs like penicillin or cephalosporins bind to red blood cells, forming drug-protein complexes. These complexes...
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Myocarditis I: Introduction01:21

Myocarditis I: Introduction

560
Myocarditis is inflammation of the myocardium, which is the muscular layer of the heart.EtiologyMyocarditis has a diverse etiology, including a wide range of infectious and non-infectious causes:Infectious CausesViral: Common viruses include Coxsackie A and B, adenovirus, parvovirus B19, enteroviruses, and influenza A.Bacterial: Examples include infections caused by Streptococcus, Staphylococcus, and Mycoplasma species.Rickettsial: Infections like Rocky Mountain spotted fever can result in...
560
Myocarditis II: Clinical Features and Diagnostic Tests01:27

Myocarditis II: Clinical Features and Diagnostic Tests

438
Myocarditis is an inflammation of the heart muscle. The symptoms vary widely, encompassing asymptomatic presentations to severe, acute manifestations.Clinical PresentationAsymptomatic cases: In some instances, myocarditis may be asymptomatic, with the infection resolving without intervention. These cases often go undetected unless discovered incidentally through diagnostic imaging or tests conducted for other reasons.General Early Symptoms: Early symptoms of myocarditis are non-specific and can...
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Myocarditis III: Medical Management01:14

Myocarditis III: Medical Management

313
Myocarditis: Comprehensive Medical ManagementMyocarditis, the heart muscle inflammation, requires a comprehensive medical management strategy that addresses the underlying cause, provides supportive care, manages symptoms, and reduces cardiac workload.Infections and Autoimmune CausesAdminister appropriate antimicrobial therapy when an infectious agent causes myocarditis. For instance, penicillin treats infections caused by Group A Streptococcus. In cases where autoimmune processes are...
313
Nephrotic Syndrome I : Introduction01:24

Nephrotic Syndrome I : Introduction

950
Nephrotic Syndrome is a chronic kidney disorder defined by clinical findings such as severe proteinuria, hypoalbuminemia, hyperlipidemia, and edema. These symptoms result from damage to the glomeruli, the kidney’s filtering units, increasing their permeability to proteins.Definition and Meaning:Proteinuria, defined as the loss of more than 3.5 grams of protein per day in adults, is a crucial feature of nephrotic syndrome. This condition is often accompanied by edema, the accumulation of...
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Related Experiment Video

Updated: Mar 24, 2026

Analyses of Proteinuria, Renal Infiltration of Leukocytes, and Renal Deposition of Proteins in Lupus-prone MRL/lpr Mice
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[Renal involvement during type 1 cryoglobulinemia].

Mohamad Zaidan1, Florent Plasse2, Marion Rabant3

  • 1Service de néphrologie-transplantation adultes, hôpital Necker, AP-HP, 149, rue de Sèvres, 75015 Paris, France; Université Paris Descartes, 12, rue de l'École-de-Médecine, 75006 Paris, France.

Nephrologie & Therapeutique
|March 15, 2016
PubMed
Summary

Type 1 cryoglobulinemia, linked to B-cell malignancy or monoclonal gammopathy, often involves kidneys. Effective treatment, guided by the underlying condition, targets hematologic remission for improved renal outcomes.

Keywords:
CryoglobulinCryoglobulineCryoglobulinémie de type 1Cryoglobulinémie monoclonaleGammapathie de signification rénaleGlomérulonéphrite membranoproliférativeHaematological malignancyHémopathieMembranoproliferative glomerulonephritisMonoclonal cryoglobulinemiaMonoclonal gammopathy of renal significanceType 1 cryoglobulinemia

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Area of Science:

  • Nephrology
  • Hematology
  • Immunology

Background:

  • Cryoglobulins are immunoglobulins precipitating in cold, relevant in cryoglobulinemia.
  • Type 1 cryoglobulinemia involves a single monoclonal immunoglobulin, frequently associated with renal disease (40%) and B-cell malignancies (60%).
  • Monoclonal gammopathy of renal significance (MGRS) is diagnosed in cases without malignancy criteria.

Purpose of the Study:

  • To outline the clinical presentation, diagnosis, and management of Type 1 cryoglobulinemia.
  • To differentiate management strategies based on underlying hematologic conditions or MGRS.
  • To highlight the link between hematologic response and renal outcomes in monoclonal cryoglobulinemia.

Main Methods:

  • Review of clinical, biological, and histological features of Type 1 cryoglobulinemia.
  • Analysis of treatment strategies for hematologic malignancies and MGRS associated with cryoglobulinemia.
  • Correlation of hematologic remission with renal response.

Main Results:

  • Type 1 cryoglobulinemia shares features with mixed cryoglobulinemia.
  • Treatment for malignancy-associated cryoglobulinemia focuses on inducing hematologic remission.
  • Specific therapies include bortezomib, cyclophosphamide, and dexamethasone for IgG/IgA monoclonal cryoglobulinemia, and rituximab for IgM monoclonal cryoglobulinemia.

Conclusions:

  • The clinical course of renal monoclonal cryoglobulinemia is closely tied to hematologic response.
  • Achieving hematologic remission is crucial for favorable renal outcomes.
  • Management strategies are tailored to the specific underlying clone and associated condition.