Membranous Glomerulonephritis

DISEASE DIFINITION

Membranous glomerulonephritis (MGN) is a specific type of glomerulonephritis, which is a group of kidney disorders involving inflammation of the glomeruli, the tiny filtering units in the kidneys. In MGN, the glomerular basement membrane thickens and becomes more permeable, leading to proteinuria and impaired kidney function. MGN is known by other names, including extramembranous glomerulonephritis, membranous nephropathy, and nephritis. MGN is very rare. It’s most commonly diagnosed in people over age 40.


WHAT IS THE CAUSE?

MGN can develop as a primary kidney disease, meaning it’s not caused by another condition.

However, it can also develop as a result of other health conditions, like high toxic exposition to mercury, or some certain medications, including gold, penicillamine, nonsteroidal anti-inflammatory drugs, infections like malaria, hepatitis B, hepatitis C or syphilis, certain types of cancers (melanoma), autoimmune disorder such as lupus, rheumatoid arthritis, or Graves’ disease as well kidney or bone marrow transplantion.


SYMPTOMS

Edema

Fatigue and weakness

Weight gain

 Poor appetite

Haematuria

Proteinuria

Swelling in the ankles, feet, and face.

Due to anemia and chronic kidney disease.

Due to chronic kidney disease.

Due to chronic kindey disease and protein loss.

Blood in the urine.

Foamy urine due to excessive protein in the urine.


DIAGNOSIS

1. Physical Examination:

The doctor will assess the patient's overall health, check for signs of edema, and measure blood pressure, body weight and body high.

2. Urine Tests:

A urine sample is collected to check for proteinuria and hematuria.

3. Blood Tests:

Blood tests are conducted to measure serum albumin, creatinine, and other parameters to evaluate kidney function. Some additional tests help to find the cause of the condition. These tests could include: an antinuclear antibodies test,  an antidouble-strand DNA test, a test for hepatitis B, a test for hepatitis C,  a test for malaria, a test for syphilis,  a test for complement levels as well a cryoglobulin test.

4. Kidney Biopsy:

A small piece of kidney tissue is obtained through a biopsy and examined under a microscope to confirm the diagnosis and assess the severity of the histoplatological changes.


TREATMENT

The treatment of membranous glomerulonephritis is aimed at managing symptoms, preserving kidney function, and preventing complications. The approach may include:

Immunosuppressive Therapy

In some cases, immunosuppressive medications like corticosteroids, cyclosporine, or tacrolimus may be prescribed to suppress the immune response and reduce inflammation.

ACEI (angiotensin convertase inhibitors) or ARBs (angiotensin receptor 1 – blockers)

These medications are used to control blood pressure and reduce proteinuria.

Diuretics

Dietary Changes

Lifestyle Modifications

Monitoring and Follow-up

Diuretics may be prescribed to manage edema and fluid retention.

 A low-sodium diet may be recommended to control edema and blood pressure.

Avoiding smoking and alcohol, maintaining a healthy diet, and exercising regularly can help manage the condition.

Regular check-ups are necessary to monitor kidney function, proteinuria, and adjust the treatment plan as needed.