The epidemiology of Streptococcus gordonii infection is not well studied, but it is a rare cause of invasive disease. According to a review of 21 cases of infective endocarditis caused by Streptococcus gordonii, the median age of the patients was 57 years, and 76% were male. Most of the patients had underlying cardiac conditions, such as rheumatic heart disease, prosthetic valves, or congenital disabilities. Dental procedures or poor oral hygiene were the most common predisposing factors for the infection. The mortality rate was 19%, and the most frequent complications were embolic events, heart failure, and abscess formation.
Similarly, a case report of spondylodiskitis caused by Streptococcus gordonii described a 66-year-old male patient who had a history of dental extraction and chronic periodontitis. He presented with severe back pain, fever, and neurological deficits. Magnetic resonance imaging (MRI) showed an infection of the intervertebral disks and the adjacent vertebrae at the L4-L5 level. Blood cultures and biopsy confirmed the presence of Streptococcus gordonii. Antibiotics were administered intravenously to the patient and surgery, and he recovered well.
Another case report of septic arthritis caused by Streptococcus gordonii involved a 64-year-old female patient who had a history of rheumatoid arthritis and joint prostheses. She developed pain, swelling, and reduced range of motion in her right knee. Joint aspiration and synovial fluid analysis revealed Streptococcus gordonii as the causative agent. Drainage and antibiotics were used in the patient’s treatment, and she improved clinically.
Finally, a case report of spontaneous bacterial peritonitis caused by Streptococcus gordonii reported a 59-year-old male patient who had a history of liver cirrhosis, ascites, and peritoneal dialysis. He presented with abdominal pain, distension, fever, and signs of shock. Paracentesis and ascitic fluid analysis showed Streptococcus gordonii as the responsible organism. The patient received albumin infusion and antibiotics, but he died due to multiorgan failure.
These are some of the examples of the epidemiology of Streptococcus gordonii infection. Still, they may need to reflect the true incidence or prevalence of the disease, as it may be underdiagnosed or misdiagnosed. More studies are needed to understand better the risk factors, transmission modes, clinical features, diagnosis methods, treatment options, and outcomes of Streptococcus gordonii infection.
Domain: Bacteria
Phylum: Bacillota
Class: Bacilli
Order: Lactobacillales
Family: Streptococcaceae
Genus: Streptococcus
Species: S. gordonii
The structure of Streptococcus gordonii can be summarized in five points as follows:
S. gordonii is a Gram-positive bacterium that belongs to the genus Streptococcus and the family Streptococcaceae. It is a mesophilic, nonmotile coccus that grows in pairs or chains.
S. gordonii has a cell wall composed of peptidoglycan, lipoteichoic acids, lipoproteins, and cell wall proteins. These components are involved in the adhesion, virulence, and immunoregulation of the bacterium.
S. gordonii has a surface protein called M protein; it is a significant virulence factor that helps the bacterium evade phagocytosis and complement-mediated killing by the host. The M protein has different antigenic types based on the gene sequence and serotype.
S. gordonii also has a capsular polysaccharide, which is another virulence factor that protects the bacterium from opsonization and phagocytosis by the host. The capsular polysaccharide has different antigenic types based on the gene cluster and serotype.
S. gordonii has a 3D structure of the surface protein CshA, which is a serine-rich repeat adhesin that mediates the binding of the bacterium to salivary components and other oral bacteria. The structure of CshA reveals a modular architecture with a novel fold and a calcium-binding site.
Antigenic types of Streptococcus gordonii are the different variants of the bacterium that can be distinguished by their surface antigens, such as M protein, lipoteichoic acid, and capsular polysaccharide. These antigens are involved in the interaction with the host immune system and may affect the pathogenicity and virulence of the bacterium.
According to one review article, S. gordonii has at least 12 antigenic types based on the M protein gene (emm) sequence, which are designated as emm12, emm16, emm18, emm22, emm23, emm24, emm25, emm26, emm27, emm28, emm29, and emm30. These types are also associated with different serotypes of the M protein, such as M12, M16, M18, M22 to M28, M29, and M30. One of S. gordonii’s main virulence factors is the M protein that helps the bacterium evade phagocytosis and complement-mediated killing by the host.
Another article reported that S. gordonii has four antigenic types based on the capsular polysaccharide (cps) gene cluster, which are designated as cps1, cps2, cps3, and cps4. These types are also associated with different serotypes of the capsular polysaccharide, such as K1, K2, K3, and K4. The capsular polysaccharide is another virulence factor of S. gordonii that protects the bacterium from opsonization and phagocytosis by the host.
The pathogenesis of Streptococcus gordonii involves the following steps:
S. gordonii colonizes oral biofilms on tooth surfaces and is involved in the formation of dental plaques1. It is an early colonizer that easily attaches to host tissues, including tooth surfaces and heart valves, forming biofilms.
Bacteria can be released from oral biofilms and enter the bloodstream via tooth brushing, tooth extraction, or oral trauma, resulting in systemic infection.
S. gordonii interacts with various host immune and non-immune cells, such as platelets, neutrophils, macrophages, and endothelial cells, through its cell wall components, which include lipoteichoic acids, lipoproteins, serine-rich repeat adhesins, peptidoglycans, and cell wall proteins.
S. gordonii cell wall components act as virulence factors that often progressively develop diseases through overwhelming host inflammatory responses. They can trigger the activation of host receptors, such as Toll-like receptors, NOD-like receptors, and C-type lectin receptors, leading to the production of pro-inflammatory cytokines, chemokines, and reactive oxygen species.
S. gordonii can cause local or systemic diseases, such as apical periodontitis and infective endocarditis. Apical periodontitis is an inflammation of the periapical tissues around the root of a tooth, which can cause pain, swelling, and abscess formation. A heart valve infection is known as infectious endocarditis, which can cause fever, heart murmur, embolism, and heart failure.
The host defenses of Streptococcus gordonii are the mechanisms that the human body uses to protect itself from the infection caused by this bacterium. According to the web search and question-answering results, some of the host defenses of Streptococcus gordonii are:
The salivary pellicle, which is a thin layer of proteins and glycoproteins that covers the tooth surfaces, can prevent the attachment of S. gordonii and other oral bacteria, reducing the formation of dental plaques and biofilms.
The innate immune system, which is the first line of defense against microbial invaders, can recognize and eliminate S. gordonii through various cells and molecules, such as neutrophils, macrophages, natural killer cells, complement, and antimicrobial peptides.
The adaptive immune system, which is the second line of defense that provides specific and long-lasting immunity, can produce antibodies and T cells that target S. gordonii and its cell wall components, preventing the colonization and dissemination of the bacterium.
The inflammatory response, which is a complex reaction that results in the release of cytokines and the activation of immune cells, chemokines, and reactive oxygen species, can help to contain and clear the infection by S. gordonii. Still, it can also cause tissue damage and systemic complications if it is excessive or chronic.
Streptococcus gordonii is a type of bacteria that generally lives in the human mouth and upper respiratory tract. It is usually harmless, but it can sometimes cause infections in different parts of the body, especially if it enters the bloodstream.
Some of the clinical manifestations of Streptococcus gordonii infection are:
Infective endocarditis: This is an infection that affects the heart valves or its inner lining. It can cause fever, chills, night sweats, fatigue, weight loss, heart murmur, and embolic complications such as stroke, kidney failure, or splenic infarction. Infective endocarditis due to Streptococcus gordonii is rare, but it can occur in people with underlying heart disease or dental procedures. Blood cultures, echocardiography, and clinical criteria can diagnose it. It can be treated with antibiotics and sometimes surgery.
Spondylodiskitis: This is an infection of the intervertebral disks and the adjacent vertebrae. It can cause severe back pain, stiffness, fever, and neurological deficits. Spondylodiskitis due to Streptococcus gordonii is very uncommon, but it can occur as a complication of infective endocarditis or after dental procedures. It can be diagnosed by blood cultures, magnetic resonance imaging (MRI), and biopsy. It can be treated with prolonged intravenous antibiotics and sometimes surgery.
Septic arthritis: This is an infection of the joints, usually the knee, hip, or shoulder. It can cause pain, swelling, redness, warmth, and reduced range of motion. Septic arthritis due to Streptococcus gordonii is rare, but it can occur in people with joint prostheses, rheumatoid arthritis, or immunosuppression. Blood cultures, joint aspiration, and synovial fluid analysis can diagnose it. It can be treated with antibiotics and sometimes drainage or surgery.
Spontaneous bacterial peritonitis: This is an infection of the fluid and lining of the abdominal cavity. It can cause abdominal pain, distension, fever, and signs of shock. Spontaneous bacterial peritonitis due to Streptococcus gordonii is very rare, but it can occur in people with liver cirrhosis, ascites, or peritoneal dialysis. Blood cultures, paracentesis, and ascitic fluid analysis can diagnose it. It can be treated with antibiotics and sometimes an albumin infusion.
To diagnose Streptococcus gordonii infection:
Oral Infections (e.g., dental caries, periodontitis): Visual examination of teeth and gums, dental radiographs, dental plaque culture, or molecular methods like PCR or Next-Generation Sequencing.
Systemic Infections (e.g., bacteremia, infective endocarditis): Blood cultures, rapid strep test for group A streptococci, and other tests like sedimentation rate, CRP, and echocardiography.
Prosthetic Joint Infections: History, physical examination, plain radiographs, and diagnostic arthrocentesis to analyze synovial fluid for cell count and bacterial culture.
To prevent Streptococcus gordonii infection:
To keep your teeth healthy, brushing twice a day, flossing, and routine dental checkups are recommended.
Avoid sharing personal items to prevent bacteria transmission.
Practice hand hygiene, especially before eating and after touching your face.
If you have symptoms like a sore throat, see a doctor and get tested for strep throat.
If diagnosed with strep throat, complete the prescribed antibiotics and stay home until not contagious.
If you have heart issues, consult your doctor or dentist about preventive antibiotics before dental or invasive procedures to prevent infective endocarditis.
Cureus | Infectious Spondylitis Caused by Streptococcus gordonii | Article
The epidemiology of Streptococcus gordonii infection is not well studied, but it is a rare cause of invasive disease. According to a review of 21 cases of infective endocarditis caused by Streptococcus gordonii, the median age of the patients was 57 years, and 76% were male. Most of the patients had underlying cardiac conditions, such as rheumatic heart disease, prosthetic valves, or congenital disabilities. Dental procedures or poor oral hygiene were the most common predisposing factors for the infection. The mortality rate was 19%, and the most frequent complications were embolic events, heart failure, and abscess formation.
Similarly, a case report of spondylodiskitis caused by Streptococcus gordonii described a 66-year-old male patient who had a history of dental extraction and chronic periodontitis. He presented with severe back pain, fever, and neurological deficits. Magnetic resonance imaging (MRI) showed an infection of the intervertebral disks and the adjacent vertebrae at the L4-L5 level. Blood cultures and biopsy confirmed the presence of Streptococcus gordonii. Antibiotics were administered intravenously to the patient and surgery, and he recovered well.
Another case report of septic arthritis caused by Streptococcus gordonii involved a 64-year-old female patient who had a history of rheumatoid arthritis and joint prostheses. She developed pain, swelling, and reduced range of motion in her right knee. Joint aspiration and synovial fluid analysis revealed Streptococcus gordonii as the causative agent. Drainage and antibiotics were used in the patient’s treatment, and she improved clinically.
Finally, a case report of spontaneous bacterial peritonitis caused by Streptococcus gordonii reported a 59-year-old male patient who had a history of liver cirrhosis, ascites, and peritoneal dialysis. He presented with abdominal pain, distension, fever, and signs of shock. Paracentesis and ascitic fluid analysis showed Streptococcus gordonii as the responsible organism. The patient received albumin infusion and antibiotics, but he died due to multiorgan failure.
These are some of the examples of the epidemiology of Streptococcus gordonii infection. Still, they may need to reflect the true incidence or prevalence of the disease, as it may be underdiagnosed or misdiagnosed. More studies are needed to understand better the risk factors, transmission modes, clinical features, diagnosis methods, treatment options, and outcomes of Streptococcus gordonii infection.
Domain: Bacteria
Phylum: Bacillota
Class: Bacilli
Order: Lactobacillales
Family: Streptococcaceae
Genus: Streptococcus
Species: S. gordonii
The structure of Streptococcus gordonii can be summarized in five points as follows:
S. gordonii is a Gram-positive bacterium that belongs to the genus Streptococcus and the family Streptococcaceae. It is a mesophilic, nonmotile coccus that grows in pairs or chains.
S. gordonii has a cell wall composed of peptidoglycan, lipoteichoic acids, lipoproteins, and cell wall proteins. These components are involved in the adhesion, virulence, and immunoregulation of the bacterium.
S. gordonii has a surface protein called M protein; it is a significant virulence factor that helps the bacterium evade phagocytosis and complement-mediated killing by the host. The M protein has different antigenic types based on the gene sequence and serotype.
S. gordonii also has a capsular polysaccharide, which is another virulence factor that protects the bacterium from opsonization and phagocytosis by the host. The capsular polysaccharide has different antigenic types based on the gene cluster and serotype.
S. gordonii has a 3D structure of the surface protein CshA, which is a serine-rich repeat adhesin that mediates the binding of the bacterium to salivary components and other oral bacteria. The structure of CshA reveals a modular architecture with a novel fold and a calcium-binding site.
Antigenic types of Streptococcus gordonii are the different variants of the bacterium that can be distinguished by their surface antigens, such as M protein, lipoteichoic acid, and capsular polysaccharide. These antigens are involved in the interaction with the host immune system and may affect the pathogenicity and virulence of the bacterium.
According to one review article, S. gordonii has at least 12 antigenic types based on the M protein gene (emm) sequence, which are designated as emm12, emm16, emm18, emm22, emm23, emm24, emm25, emm26, emm27, emm28, emm29, and emm30. These types are also associated with different serotypes of the M protein, such as M12, M16, M18, M22 to M28, M29, and M30. One of S. gordonii’s main virulence factors is the M protein that helps the bacterium evade phagocytosis and complement-mediated killing by the host.
Another article reported that S. gordonii has four antigenic types based on the capsular polysaccharide (cps) gene cluster, which are designated as cps1, cps2, cps3, and cps4. These types are also associated with different serotypes of the capsular polysaccharide, such as K1, K2, K3, and K4. The capsular polysaccharide is another virulence factor of S. gordonii that protects the bacterium from opsonization and phagocytosis by the host.
The pathogenesis of Streptococcus gordonii involves the following steps:
S. gordonii colonizes oral biofilms on tooth surfaces and is involved in the formation of dental plaques1. It is an early colonizer that easily attaches to host tissues, including tooth surfaces and heart valves, forming biofilms.
Bacteria can be released from oral biofilms and enter the bloodstream via tooth brushing, tooth extraction, or oral trauma, resulting in systemic infection.
S. gordonii interacts with various host immune and non-immune cells, such as platelets, neutrophils, macrophages, and endothelial cells, through its cell wall components, which include lipoteichoic acids, lipoproteins, serine-rich repeat adhesins, peptidoglycans, and cell wall proteins.
S. gordonii cell wall components act as virulence factors that often progressively develop diseases through overwhelming host inflammatory responses. They can trigger the activation of host receptors, such as Toll-like receptors, NOD-like receptors, and C-type lectin receptors, leading to the production of pro-inflammatory cytokines, chemokines, and reactive oxygen species.
S. gordonii can cause local or systemic diseases, such as apical periodontitis and infective endocarditis. Apical periodontitis is an inflammation of the periapical tissues around the root of a tooth, which can cause pain, swelling, and abscess formation. A heart valve infection is known as infectious endocarditis, which can cause fever, heart murmur, embolism, and heart failure.
The host defenses of Streptococcus gordonii are the mechanisms that the human body uses to protect itself from the infection caused by this bacterium. According to the web search and question-answering results, some of the host defenses of Streptococcus gordonii are:
The salivary pellicle, which is a thin layer of proteins and glycoproteins that covers the tooth surfaces, can prevent the attachment of S. gordonii and other oral bacteria, reducing the formation of dental plaques and biofilms.
The innate immune system, which is the first line of defense against microbial invaders, can recognize and eliminate S. gordonii through various cells and molecules, such as neutrophils, macrophages, natural killer cells, complement, and antimicrobial peptides.
The adaptive immune system, which is the second line of defense that provides specific and long-lasting immunity, can produce antibodies and T cells that target S. gordonii and its cell wall components, preventing the colonization and dissemination of the bacterium.
The inflammatory response, which is a complex reaction that results in the release of cytokines and the activation of immune cells, chemokines, and reactive oxygen species, can help to contain and clear the infection by S. gordonii. Still, it can also cause tissue damage and systemic complications if it is excessive or chronic.
Streptococcus gordonii is a type of bacteria that generally lives in the human mouth and upper respiratory tract. It is usually harmless, but it can sometimes cause infections in different parts of the body, especially if it enters the bloodstream.
Some of the clinical manifestations of Streptococcus gordonii infection are:
Infective endocarditis: This is an infection that affects the heart valves or its inner lining. It can cause fever, chills, night sweats, fatigue, weight loss, heart murmur, and embolic complications such as stroke, kidney failure, or splenic infarction. Infective endocarditis due to Streptococcus gordonii is rare, but it can occur in people with underlying heart disease or dental procedures. Blood cultures, echocardiography, and clinical criteria can diagnose it. It can be treated with antibiotics and sometimes surgery.
Spondylodiskitis: This is an infection of the intervertebral disks and the adjacent vertebrae. It can cause severe back pain, stiffness, fever, and neurological deficits. Spondylodiskitis due to Streptococcus gordonii is very uncommon, but it can occur as a complication of infective endocarditis or after dental procedures. It can be diagnosed by blood cultures, magnetic resonance imaging (MRI), and biopsy. It can be treated with prolonged intravenous antibiotics and sometimes surgery.
Septic arthritis: This is an infection of the joints, usually the knee, hip, or shoulder. It can cause pain, swelling, redness, warmth, and reduced range of motion. Septic arthritis due to Streptococcus gordonii is rare, but it can occur in people with joint prostheses, rheumatoid arthritis, or immunosuppression. Blood cultures, joint aspiration, and synovial fluid analysis can diagnose it. It can be treated with antibiotics and sometimes drainage or surgery.
Spontaneous bacterial peritonitis: This is an infection of the fluid and lining of the abdominal cavity. It can cause abdominal pain, distension, fever, and signs of shock. Spontaneous bacterial peritonitis due to Streptococcus gordonii is very rare, but it can occur in people with liver cirrhosis, ascites, or peritoneal dialysis. Blood cultures, paracentesis, and ascitic fluid analysis can diagnose it. It can be treated with antibiotics and sometimes an albumin infusion.
To diagnose Streptococcus gordonii infection:
Oral Infections (e.g., dental caries, periodontitis): Visual examination of teeth and gums, dental radiographs, dental plaque culture, or molecular methods like PCR or Next-Generation Sequencing.
Systemic Infections (e.g., bacteremia, infective endocarditis): Blood cultures, rapid strep test for group A streptococci, and other tests like sedimentation rate, CRP, and echocardiography.
Prosthetic Joint Infections: History, physical examination, plain radiographs, and diagnostic arthrocentesis to analyze synovial fluid for cell count and bacterial culture.
To prevent Streptococcus gordonii infection:
To keep your teeth healthy, brushing twice a day, flossing, and routine dental checkups are recommended.
Avoid sharing personal items to prevent bacteria transmission.
Practice hand hygiene, especially before eating and after touching your face.
If you have symptoms like a sore throat, see a doctor and get tested for strep throat.
If diagnosed with strep throat, complete the prescribed antibiotics and stay home until not contagious.
If you have heart issues, consult your doctor or dentist about preventive antibiotics before dental or invasive procedures to prevent infective endocarditis.
Cureus | Infectious Spondylitis Caused by Streptococcus gordonii | Article
The epidemiology of Streptococcus gordonii infection is not well studied, but it is a rare cause of invasive disease. According to a review of 21 cases of infective endocarditis caused by Streptococcus gordonii, the median age of the patients was 57 years, and 76% were male. Most of the patients had underlying cardiac conditions, such as rheumatic heart disease, prosthetic valves, or congenital disabilities. Dental procedures or poor oral hygiene were the most common predisposing factors for the infection. The mortality rate was 19%, and the most frequent complications were embolic events, heart failure, and abscess formation.
Similarly, a case report of spondylodiskitis caused by Streptococcus gordonii described a 66-year-old male patient who had a history of dental extraction and chronic periodontitis. He presented with severe back pain, fever, and neurological deficits. Magnetic resonance imaging (MRI) showed an infection of the intervertebral disks and the adjacent vertebrae at the L4-L5 level. Blood cultures and biopsy confirmed the presence of Streptococcus gordonii. Antibiotics were administered intravenously to the patient and surgery, and he recovered well.
Another case report of septic arthritis caused by Streptococcus gordonii involved a 64-year-old female patient who had a history of rheumatoid arthritis and joint prostheses. She developed pain, swelling, and reduced range of motion in her right knee. Joint aspiration and synovial fluid analysis revealed Streptococcus gordonii as the causative agent. Drainage and antibiotics were used in the patient’s treatment, and she improved clinically.
Finally, a case report of spontaneous bacterial peritonitis caused by Streptococcus gordonii reported a 59-year-old male patient who had a history of liver cirrhosis, ascites, and peritoneal dialysis. He presented with abdominal pain, distension, fever, and signs of shock. Paracentesis and ascitic fluid analysis showed Streptococcus gordonii as the responsible organism. The patient received albumin infusion and antibiotics, but he died due to multiorgan failure.
These are some of the examples of the epidemiology of Streptococcus gordonii infection. Still, they may need to reflect the true incidence or prevalence of the disease, as it may be underdiagnosed or misdiagnosed. More studies are needed to understand better the risk factors, transmission modes, clinical features, diagnosis methods, treatment options, and outcomes of Streptococcus gordonii infection.
Domain: Bacteria
Phylum: Bacillota
Class: Bacilli
Order: Lactobacillales
Family: Streptococcaceae
Genus: Streptococcus
Species: S. gordonii
The structure of Streptococcus gordonii can be summarized in five points as follows:
S. gordonii is a Gram-positive bacterium that belongs to the genus Streptococcus and the family Streptococcaceae. It is a mesophilic, nonmotile coccus that grows in pairs or chains.
S. gordonii has a cell wall composed of peptidoglycan, lipoteichoic acids, lipoproteins, and cell wall proteins. These components are involved in the adhesion, virulence, and immunoregulation of the bacterium.
S. gordonii has a surface protein called M protein; it is a significant virulence factor that helps the bacterium evade phagocytosis and complement-mediated killing by the host. The M protein has different antigenic types based on the gene sequence and serotype.
S. gordonii also has a capsular polysaccharide, which is another virulence factor that protects the bacterium from opsonization and phagocytosis by the host. The capsular polysaccharide has different antigenic types based on the gene cluster and serotype.
S. gordonii has a 3D structure of the surface protein CshA, which is a serine-rich repeat adhesin that mediates the binding of the bacterium to salivary components and other oral bacteria. The structure of CshA reveals a modular architecture with a novel fold and a calcium-binding site.
Antigenic types of Streptococcus gordonii are the different variants of the bacterium that can be distinguished by their surface antigens, such as M protein, lipoteichoic acid, and capsular polysaccharide. These antigens are involved in the interaction with the host immune system and may affect the pathogenicity and virulence of the bacterium.
According to one review article, S. gordonii has at least 12 antigenic types based on the M protein gene (emm) sequence, which are designated as emm12, emm16, emm18, emm22, emm23, emm24, emm25, emm26, emm27, emm28, emm29, and emm30. These types are also associated with different serotypes of the M protein, such as M12, M16, M18, M22 to M28, M29, and M30. One of S. gordonii’s main virulence factors is the M protein that helps the bacterium evade phagocytosis and complement-mediated killing by the host.
Another article reported that S. gordonii has four antigenic types based on the capsular polysaccharide (cps) gene cluster, which are designated as cps1, cps2, cps3, and cps4. These types are also associated with different serotypes of the capsular polysaccharide, such as K1, K2, K3, and K4. The capsular polysaccharide is another virulence factor of S. gordonii that protects the bacterium from opsonization and phagocytosis by the host.
The pathogenesis of Streptococcus gordonii involves the following steps:
S. gordonii colonizes oral biofilms on tooth surfaces and is involved in the formation of dental plaques1. It is an early colonizer that easily attaches to host tissues, including tooth surfaces and heart valves, forming biofilms.
Bacteria can be released from oral biofilms and enter the bloodstream via tooth brushing, tooth extraction, or oral trauma, resulting in systemic infection.
S. gordonii interacts with various host immune and non-immune cells, such as platelets, neutrophils, macrophages, and endothelial cells, through its cell wall components, which include lipoteichoic acids, lipoproteins, serine-rich repeat adhesins, peptidoglycans, and cell wall proteins.
S. gordonii cell wall components act as virulence factors that often progressively develop diseases through overwhelming host inflammatory responses. They can trigger the activation of host receptors, such as Toll-like receptors, NOD-like receptors, and C-type lectin receptors, leading to the production of pro-inflammatory cytokines, chemokines, and reactive oxygen species.
S. gordonii can cause local or systemic diseases, such as apical periodontitis and infective endocarditis. Apical periodontitis is an inflammation of the periapical tissues around the root of a tooth, which can cause pain, swelling, and abscess formation. A heart valve infection is known as infectious endocarditis, which can cause fever, heart murmur, embolism, and heart failure.
The host defenses of Streptococcus gordonii are the mechanisms that the human body uses to protect itself from the infection caused by this bacterium. According to the web search and question-answering results, some of the host defenses of Streptococcus gordonii are:
The salivary pellicle, which is a thin layer of proteins and glycoproteins that covers the tooth surfaces, can prevent the attachment of S. gordonii and other oral bacteria, reducing the formation of dental plaques and biofilms.
The innate immune system, which is the first line of defense against microbial invaders, can recognize and eliminate S. gordonii through various cells and molecules, such as neutrophils, macrophages, natural killer cells, complement, and antimicrobial peptides.
The adaptive immune system, which is the second line of defense that provides specific and long-lasting immunity, can produce antibodies and T cells that target S. gordonii and its cell wall components, preventing the colonization and dissemination of the bacterium.
The inflammatory response, which is a complex reaction that results in the release of cytokines and the activation of immune cells, chemokines, and reactive oxygen species, can help to contain and clear the infection by S. gordonii. Still, it can also cause tissue damage and systemic complications if it is excessive or chronic.
Streptococcus gordonii is a type of bacteria that generally lives in the human mouth and upper respiratory tract. It is usually harmless, but it can sometimes cause infections in different parts of the body, especially if it enters the bloodstream.
Some of the clinical manifestations of Streptococcus gordonii infection are:
Infective endocarditis: This is an infection that affects the heart valves or its inner lining. It can cause fever, chills, night sweats, fatigue, weight loss, heart murmur, and embolic complications such as stroke, kidney failure, or splenic infarction. Infective endocarditis due to Streptococcus gordonii is rare, but it can occur in people with underlying heart disease or dental procedures. Blood cultures, echocardiography, and clinical criteria can diagnose it. It can be treated with antibiotics and sometimes surgery.
Spondylodiskitis: This is an infection of the intervertebral disks and the adjacent vertebrae. It can cause severe back pain, stiffness, fever, and neurological deficits. Spondylodiskitis due to Streptococcus gordonii is very uncommon, but it can occur as a complication of infective endocarditis or after dental procedures. It can be diagnosed by blood cultures, magnetic resonance imaging (MRI), and biopsy. It can be treated with prolonged intravenous antibiotics and sometimes surgery.
Septic arthritis: This is an infection of the joints, usually the knee, hip, or shoulder. It can cause pain, swelling, redness, warmth, and reduced range of motion. Septic arthritis due to Streptococcus gordonii is rare, but it can occur in people with joint prostheses, rheumatoid arthritis, or immunosuppression. Blood cultures, joint aspiration, and synovial fluid analysis can diagnose it. It can be treated with antibiotics and sometimes drainage or surgery.
Spontaneous bacterial peritonitis: This is an infection of the fluid and lining of the abdominal cavity. It can cause abdominal pain, distension, fever, and signs of shock. Spontaneous bacterial peritonitis due to Streptococcus gordonii is very rare, but it can occur in people with liver cirrhosis, ascites, or peritoneal dialysis. Blood cultures, paracentesis, and ascitic fluid analysis can diagnose it. It can be treated with antibiotics and sometimes an albumin infusion.
To diagnose Streptococcus gordonii infection:
Oral Infections (e.g., dental caries, periodontitis): Visual examination of teeth and gums, dental radiographs, dental plaque culture, or molecular methods like PCR or Next-Generation Sequencing.
Systemic Infections (e.g., bacteremia, infective endocarditis): Blood cultures, rapid strep test for group A streptococci, and other tests like sedimentation rate, CRP, and echocardiography.
Prosthetic Joint Infections: History, physical examination, plain radiographs, and diagnostic arthrocentesis to analyze synovial fluid for cell count and bacterial culture.
To prevent Streptococcus gordonii infection:
To keep your teeth healthy, brushing twice a day, flossing, and routine dental checkups are recommended.
Avoid sharing personal items to prevent bacteria transmission.
Practice hand hygiene, especially before eating and after touching your face.
If you have symptoms like a sore throat, see a doctor and get tested for strep throat.
If diagnosed with strep throat, complete the prescribed antibiotics and stay home until not contagious.
If you have heart issues, consult your doctor or dentist about preventive antibiotics before dental or invasive procedures to prevent infective endocarditis.
Cureus | Infectious Spondylitis Caused by Streptococcus gordonii | Article
Streptococcus gordonii | Encyclopedia MDPI
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