Blueprints of the Mind: Genetic Factor Influences on Schizophrenia

Blueprints of the mind: genetic factor influences on schizophrenia. Can schizophrenia be inherited from your mother or father? YES! I inherited it from my mother. She stopped taking meds towards the end of her life.

She became a bitter person who kept talking to nobody. In effect, she would nod her head and whisper stuff you couldn’t hear. Basically, the noding was the understanding towards the voices.

I only know this because I’ve gone through the same experiences. When I have my “episodes,” I hear voices and hide from everyone.

I have no sense of time and usually I believe in that time that someone is out to harm me. I think that’s why I don’t leave the apartment or house.

So yes, schizophrenia is hereditary. That’s why I opted not to have any children. I didn’t want my child to go through what I have been through. It’s a death sentence.

Schizophrenia Genetic Risk

Accordingly, the genetic risk for schizophrenia is a significant area of research, indicating that genetics play a crucial role in the development of the disorder.

Here are some key points regarding genetic risk factors for schizophrenia:

Heritability: Studies suggest that the heritability of schizophrenia is around 80%. As a result, this means that genetic factors account for a substantial portion of the risk for developing the disorder.
Family Studies: Individuals with a family history of schizophrenia have a higher risk of developing the condition. For example, the risk is about 10% for first-degree relatives (parents, siblings) of affected individuals, compared to approximately 1% in the general population.
Twin Studies: Overall, research involving twins has shown that if one identical twin has schizophrenia, the other twin has about a 40-50% chance of also developing the disorder, compared to about 10-15% for fraternal twins.
Genetic Variants: Genome-wide association studies (GWAS) have identified numerous genetic variants associated with schizophrenia. Likewise, these variants are often related to neurodevelopmental processes and brain function.
Polygenic Risk Score: Schizophrenia is considered a polygenic disorder, meaning that multiple genes contribute to the risk. Therefore, researchers use polygenic risk scores to estimate an individual’s genetic susceptibility based on the cumulative effect of many small genetic variations.
Environmental Interactions: While genetics play a significant role, environmental factors (such as prenatal exposure to infections, psychosocial stressors, and substance use) also interact with genetic predispositions to influence the likelihood of developing schizophrenia.
Specific Genes: Some specific genes, such as those involved in neurotransmitter systems (like dopamine and glutamate), have been implicated in the risk for schizophrenia.

Blueprints of the mind: genetic factor influences on schizophrenia. Hence, understanding the genetic risk for schizophrenia helps researchers develop better prevention strategies and treatments.

It’s important to note that having a genetic predisposition does not guarantee that an individual will develop the disorder.

Symptoms of Schizophrenia

Schizophrenia is a complex mental disorder characterized by a range of symptoms that can affect thinking, behavior, and emotions.

However, the symptoms are typically categorized into three main groups: positive, negative, and cognitive symptoms. Here’s an overview of each category:

Positive Symptoms

These symptoms represent an excess or distortion of normal functions and may include:

Hallucinations: Experiencing sensations that are not present, such as hearing voices or seeing things that others do not.
Delusions: Strongly held false beliefs that are resistant to reason or confrontation with actual facts, such as believing one has special powers or is being persecuted.
Disorganized Thinking: Difficulty organizing thoughts, leading to incoherent speech or trouble following a conversation.
Agitation or Disorganized Behavior: Unpredictable or inappropriate emotional responses and behaviors, which can include restlessness or difficulty performing daily activities.

Negative Symptoms

These symptoms reflect a decrease or loss of normal functions and may include:

Affective Flattening: Reduced expression of emotions in facial expression, voice tone, and body language.
Avolition: Nonetheless, lack of motivation to engage in self-initiated activities, leading to neglect of personal hygiene or responsibilities.
Anhedonia: Loss of interest or pleasure in activities that were once enjoyable.
Social Withdrawal: Moreover, difficulty forming relationships and a tendency to isolate oneself from others.
Alogia: Reduced speech output, which can manifest as short or monosyllabic responses in conversation.

Cognitive Symptoms

Blueprints of the mind: genetic factor influences on schizophrenia. These symptoms affect memory and cognitive functions and may include:

Impaired Executive Functioning: Difficulty with planning, organizing, and making decisions.
Attention Deficits: In sum, trouble focusing or sustaining attention on tasks.
Memory Issues: Problems with working memory, which can affect the ability to process information and learn new things.

Additional Considerations

Variability: Symptoms can vary widely among individuals and can change over time. Some may experience periods of remission and exacerbation.
Onset: Symptoms typically emerge in late adolescence or early adulthood, but they can occur at any age.
Impact: Schizophrenia can significantly impact daily functioning, relationships, and overall quality of life.

Genetic Causes for Schizophrenia

I’m going to get technical for a minute. Some genetic factors that may increase the risk of schizophrenia include:

Chromosome 22

A small deletion in a region of chromosome 22 called 22q11 may be involved in a small percentage of cases.

Chromosome 6

Thus, the gene C4 on chromosome 6 is considered to have the strongest known genetic influence on schizophrenia.

Some research suggests that versions of this gene may trigger pruning of the teenage brain’s communications infrastructure, which can lead to fewer connections between neurons.

G72 and d-amino acid oxidase (DAO)

In short, genetic variation in these genes has been linked to schizophrenia, and patients with these variations may also have cognitive deficits and negative valence.

Other factors that may increase the risk of schizophrenia include:

Firstly, Family history
Problems during pregnancy and birth, such as bleeding, high blood pressure, or an emergency cesarean section
Being born at a lower-than-normal weight
Lastly, Exposure to a virus like the flu or herpes in the womb

Schizophrenia Brain Changes

Blueprints of the mind: genetic factor influences on schizophrenia. Scientists have found that changes in the structure and chemical makeup of your brain may play a role in schizophrenia.

Brain structure in schizophrenia

If you have schizophrenia, you might have:

Firstly, Larger spaces called ventricles in the brain
Smaller medial temporal lobes – the parts of the brain in charge of memory
Abnormal connections between brain cells
Lastly, Studies have also linked schizophrenia with a loss of brain tissue. Positron emission tomography (PET) and magnetic resonance imaging (MRI) scans show that gray matter – the part of the brain that contains nerve cells – shrinks over time. Loss of brain tissue may be related to your symptoms of the illness.

Brain chemicals

You might also have differences in brain chemicals called neurotransmitters. These chemicals help brain cells “talk to” one another.

Certain neurotransmitters may be too active or not active enough.

Specifically, dopamine and glutamate are neurotransmitters linked to schizophrenia. They carry messages that help you think and understand, and that motivate you.

An imbalance of these chemicals could affect how your brain reacts to the world around you.

That could lead to schizophrenia symptoms like hallucinations, where you see or hear things that aren’t real.

In the meantime, one theory is that an imbalance of dopamine leads to symptoms like hallucinations and delusions. Antipsychotic drugs that treat schizophrenia block dopamine.

These changes could cause schizophrenia symptoms like a lack of emotion and poor social skills.

What is the strongest genetic risk factor for schizophrenia?

Blueprints of the mind: genetic factor influences on schizophrenia. The strongest known genetic risk factor for schizophrenia is a region of chromosome 6 that includes genes involved in immune function.

In effect, this region is known as the major histocompatibility complex (MHC) locus and contains hundreds of genes.

Other genetic risk factors for schizophrenia include:

Complement component 4 (C4)

Variations in this gene can increase the risk of schizophrenia by causing excessive synaptic pruning.

In the same fashion, increased expression of C4A can also lead to reduced dendritic spines and a higher risk of schizophrenia.

GRIN2A and GRIA3

These genes encode parts of the glutamate receptor, which is a cellular antenna at the synapse that allows neurons to receive chemical signals from other neurons.

Is Late Onset Schizophrenia Hereditary?

Genetics may be a factor in late-onset schizophrenia, which is diagnosed after age 45.

People with a family history of late-onset schizophrenia may be at a higher risk of developing the disorder. However, some say that schizophrenia isn’t directly inherited.

Other factors that may contribute to late-onset schizophrenia include:

Environmental factors

Stressful life events, exposure to toxins or viruses before birth, and early childhood trauma can increase the risk.

Pre-existing conditions

Blueprints of the mind: genetic factor influences on schizophrenia. Unquestionably, people with cognitive, visual, or auditory disabilities, or those who are suspicious, isolated, or reclusive may be more likely to develop late-onset schizophrenia.

Brain chemistry and structure

Scientists have found changes in brain chemistry and structure in people with schizophrenia.

Late-onset schizophrenia can also be dormant for decades before being triggered by an event, such as trauma.

People with late-onset schizophrenia are more likely to experience symptoms like delusions and hallucinations.

Although, they’re less likely to have disorganized thoughts, impaired learning, or trouble understanding information.

Treatments for Schizophrenia

Blueprints of the mind: genetic factor influences on schizophrenia. Schizophrenia is usually treated with a combination of medication and therapy.

Treatments can help people manage symptoms, improve daily functioning, and achieve personal goals.

There is no cure for schizophrenia, but treatments can help people cope with symptoms, manage side effects, and address underlying issues.

Medication

Of course, antipsychotic medications are often the first treatment for schizophrenia. They can help make psychotic symptoms less intense and less frequent. Some examples of antipsychotics include:

Risperidone (Risperdal): Works by balancing dopamine and serotonin levels in the brain
Paliperidone (Invega): Also known as a second generation antipsychotic (SGA) or atypical antipsychotic, it rebalances dopamine and serotonin to improve thinking, mood, and behavior

Other treatments include:

Brain stimulation therapies

Such as electroconvulsive therapy (ECT) and transcranial magnetic stimulation.

Psychosocial therapies and supports

Such as psychoeducation, cognitive-behavioral therapy (CBT), cognitive adaptation training, concurrent disorders treatment, and family therapy and supports.

Arts and creative therapies

Can help people express their feelings, come to terms with traumatic events, and cope with other problems.

Computerized cognitive enhancement programs

Such as video games that require people to work for about 30 minutes to 45 minutes a day, three times a week over several months.

People with schizophrenia will usually receive help from a community mental health team (CMHT), which will offer day-to-day support and treatment.

A recovery-oriented approach, giving people agency in treatment decisions, is also essential.

Sum It All Up

Blueprints of the mind: genetic factor influences on schizophrenia. Consequently, I disagree with those who think schizophrenia isn’t hereditary.

My mother had it, I have it. How did I get it then? It didn’t just mysteriously appear like immaculate conception.

I’m sorry, I don’t mean to sound down about it. Schizophrenia is something I have to live with and I believe right now, I am doing very good.

On the whole, I’m looking to rent a house to live on my own again. I’m trying everyday to improve my outlook on life even though I could have an “episode” at any time.

I don’t believe medicine will ever truely get rid of them, so I just have to live my life to the best of my ability. Until next time…

Articles About Genetic Factors for Schizophrenia

-Schizophrenia and Your Genes

https://www.webmd.com/schizophrenia/schizophrenia-and-your-genes

-Genetics of Schizophrenia: Overview of Methods, Findings and Limitations

https://www.frontiersin.org/journals/human-neuroscience/articles/10.3389/fnhum.2017.00322/full

-Schizophrenia Prognosis

https://www.webmd.com/schizophrenia/schizophrenia-outlook

Have a Good One,

Cindee Murphy, One Voice In The Vastness Of Emotions

“You are not your illness. Therefore, you have an individual story to tell. You have a name, a history, a personality. Staying yourself is the battle.” – Julian Seifter, youthdynamics.org

“I have schizophrenia. My eyes do see. My ears do hear. I am still me, so let’s be clear. My memory may fade, my walk may slow, but I am me inside. Don’t let me go.” – Unknown, youthdynamics.org

“I was diagnosed with schizophrenia 14 months ago. And I was happier pre-diagnosis. I’ve not felt normal since that day.” – Unknown

“I don’t tell many people I have schizophrenia because I’m afraid of having nobody. But sometimes my problems get the best of me, and people think I’m being terribly mean to them or being weird.” – Unknown