Growth hormone deficiency (GHD) is an endocrine disorder characterized by insufficient production of growth hormone (GH), which plays a key role in the growth and development of the body. This condition can develop in both children and adults and can lead to a number of clinical manifestations, including growth retardation in children and metabolic and somatic changes in adults. GHD can be either primary, caused by hereditary or congenital disorders, or secondary, resulting from damage to the pituitary gland or other diseases.
History of the disease and interesting historical facts
The history of growth hormone research dates back to the mid-20th century, when the first animal experiments using pituitary extracts to study their effects on growth began in the 1930s. The first successful isolation and purification of human growth hormone was achieved in 1956, which marked the beginning of its use in clinical practice. However, it is worth noting that before the creation of a synthetic hormone in the 1980s, the use of human growth hormone was associated with high ethical and safety risks. Currently, thanks to the achievements of genetic engineering, the development of treatment methods using recombinant growth hormone has radically changed the approach to the treatment of patients with GHD.
Epidemiology
The estimated prevalence of growth hormone deficiency varies depending on the population and the diagnostic criteria being defined. Studies suggest that GHD occurs in approximately 1 in 3,500 to 4,000 live births. In adults, population prevalence estimates range from 1 to 5 cases per 10,000. GHD is more common in men than in women, although research suggests that women are more likely to be diagnosed with depression, which may complicate diagnosis. Additionally, medical conditions such as diabetes and hypothyroidism are also associated with an increased likelihood of developing growth hormone deficiency, leading to a higher incidence in these patients.
Genetic predisposition to this disease
GHD can have both hereditary and mosaic patterns of transmission, among which the key role is played by mutations in the genes that control the synthesis and secretion of growth hormone. Such genes are GHRH (growth hormone-secreting hormone) and GHR (growth hormone gene). It is known that mutations in the GHR gene, leading to its inoperability, can be responsible for the apparent deficiency of growth hormone. Although hereditary factors play an important role in the development of the disease, analysis of family histories of patients with GHD demonstrates that in some cases the disease occurs spontaneously, without an obvious predisposition.
Risk factors for the development of this disease
GDR can develop under the influence of many external and internal factors, including:
- Physical factors: head injuries, especially in the pituitary gland area; tumors of the pituitary gland or other structures that affect its function.
- Chemical factors: exposure to toxic substances such as heavy metals.
- Infectious factors: infections such as meningitis that can disrupt the normal function of the central nervous system and pituitary gland.
- Complications of other diseases: diabetes, thyroid disease and other endocrine disorders.
Diagnosis of this disease
Diagnosis of growth hormone deficiency begins with an analysis of symptoms and clinical picture. The main manifestations include:
- Poor growth in children and adolescents.
- Changes in metabolism in adults, including increased fat mass and decreased muscle mass.
- Problems with the progression of physical development and increased fatigue.
Determining growth hormone levels can be accomplished through laboratory tests, including:
- Standard tests for serum growth hormone levels.
- Stimulation tests (eg using arginine or glucose).
Radiological examinations such as magnetic resonance imaging (MRI) play a key role in identifying abnormalities in the pituitary gland. The differential diagnosis involves ruling out other causes of growth retardation and metabolic changes. This may include endocrine function assessment, other hormone levels, and functional tests.
Treatment
Treatment for growth hormone deficiency depends on the degree of deficiency and the patient's overall condition. The main approaches include:
- General treatment: lifestyle correction, normalization of sleep and nutrition patterns.
- Pharmacological treatment: administration of recombinant growth hormone (somatotropin), which is administered subcutaneously.
- Surgical treatment: In cases where GHD is caused by tumors or abnormalities of the pituitary gland, surgery may be required.
- Other treatments: Psychotherapy for children with emotional problems associated with growth retardation.
List of medications used to treat this disease
Recommended medications for the treatment of GHD include:
- Somatotropin (eg Genotropin, Humatrope, Norditropin).
- Corticosteroids as needed to treat concomitant diseases.
- Growth hormone analogues for specific cases.
Disease monitoring
Monitoring of the patient's condition with GHD includes regular monitoring of growth hormone levels, assessment of growth and development, and analysis of possible side effects of treatment. The prognosis with timely treatment is favorable in most cases, but there are risks of complications, such as:
- Osteoporosis and increased risk of fractures.
- Potential psychological problems related to intelligence and self-esteem in children with growth retardation.
Age-related features of the disease
In children, GHD is characterized by physical growth retardation, while in adults it may manifest itself through metabolic changes, increased fat mass, and decreased bone density. In older people, the defect may increase the risk of cardiovascular disease and osteoporosis, highlighting the importance of monitoring and correcting metabolic disturbances at different stages of life.
Questions and Answers
- What are the main symptoms of growth hormone deficiency? The main symptoms include slow growth in children, increased fat mass and weakness in adults, and metabolic disorders.
- How is this deficiency diagnosed? Diagnostics include tests for growth hormone levels, hormones, and MRI to assess the condition of the pituitary gland.
- What treatment is recommended? Treatment is based on the administration of recombinant growth hormone, lifestyle modifications, and in some cases, surgery.
- What is the prognosis if left untreated? Without treatment, serious complications such as osteoporosis and metabolic disorders can occur, which can impair quality of life.
- Is there a genetic predisposition? Yes, some genetic mutations can lead to growth hormone deficiency.
Advice from Dr. Oleg Korzhikov
Understanding DGR is the first step to successful treatment. It is important to provide your child with competent medical care as early as possible, as early diagnosis and treatment play a key role in normalizing growth and ensuring quality development. It is important to remember that to achieve the best results, you need to follow your doctor’s instructions, as well as pay attention to your diet and physical activity. It is important to maintain an open dialogue with your doctor to promptly identify and correct any potential problems with hormone levels.
