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Items: 1 to 20 of 21

1.

Oxidative Stress

A condition in which antioxidant levels are lower than normal. Antioxidant levels are usually measured in blood plasma. [from NCI_NCI-GLOSS]

MedGen UID:
66929
Concept ID:
C0242606
Cell or Molecular Dysfunction
2.

Stress

Everyone feels stressed from time to time. Not all stress is bad. All animals have a stress response, and it can be life-saving. But chronic stress can cause both physical and mental harm. There are at least three different types of stress:. -Routine stress related to the pressures of work, family, and other daily responsibilities. -Stress brought about by a sudden negative change, such as losing a job, divorce, or illness. -Traumatic stress, which happens when you are in danger of being seriously hurt or killed. Examples include a major accident, war, assault, or a natural disaster. This type of stress can cause post-traumatic stress disorder (PTSD). Different people may feel stress in different ways. Some people experience digestive symptoms. Others may have headaches, sleeplessness, depressed mood, anger, and irritability. People under chronic stress get more frequent and severe viral infections, such as the flu or common cold. Vaccines, such as the flu shot, are less effective for them. Some people cope with stress more effectively than others. It's important to know your limits when it comes to stress, so you can avoid more serious health effects. NIH: National Institute of Mental Health.  [from MedlinePlus]

MedGen UID:
20971
Concept ID:
C0038435
Finding
3.

Oxygen

An element with atomic symbol O, atomic number 8, and atomic weight [15.99903; 15.99977]. It is the most abundant element on earth and essential for respiration. [from MeSH]

MedGen UID:
45267
Concept ID:
C0030054
Element, Ion, or Isotope; Pharmacologic Substance
4.

Aging

Progressive damage to mitochondrial DNA (mtDNA) during life is thought to contribute to aging processes. This notion is supported by the observation of an aging-related accumulation in human mtDNA of oxidative and alkylation derivatives of nucleotides, of small deletions and insertions, and of large deletions, although their low frequency raises questions about their functional significance (Michikawa et al., 1999). [from OMIM]

MedGen UID:
1376
Concept ID:
C0001811
Organism Function
5.

Amino acid

One of several molecules that join together to form proteins. There are 20 common amino acids found in proteins. [from NCI]

MedGen UID:
250
Concept ID:
C0002520
Amino Acid, Peptide, or Protein; Biologically Active Substance; Pharmacologic Substance
6.

Paraneoplastic neurologic syndrome

MedGen UID:
797890
Concept ID:
C3267031
Pathologic Function
7.

Premature centromere division

MedGen UID:
349138
Concept ID:
C1859308
Disease or Syndrome
8.

Hyperaldosteronism, familial, type I

Glucocorticoid-remediable aldosteronism is an autosomal dominant disorder characterized by hypertension, variable hyperaldosteronism, and abnormal adrenal steroid production, including 18-oxocortisol and 18-hydroxycortisol (Lifton et al., 1992). There is significant phenotypic heterogeneity, and some individuals never develop hypertension (Stowasser et al., 2000). Genetic Heterogeneity of Familial Hyperaldosteronism Familial hyperaldosteronism type II (HALD2; 605635) has been mapped to chromosome 7p22. Familial hyperaldosteronism type III (HALD3; 613677) is caused by mutation in the KCNJ5 gene (600734) on chromosome 11q24. Familial hyperaldosteronism type IV (HALD4; 617027) is caused by mutation in the CACNA1H gene (607904) on chromosome 16p13. [from OMIM]

MedGen UID:
224694
Concept ID:
C1260386
Disease or Syndrome
9.

Mutant

An altered form of an individual, organism, population, or genetic character that differs from the corresponding wild type due to one or more alterations (mutations). [from NCI]

MedGen UID:
109303
Concept ID:
C0596988
Cell or Molecular Dysfunction
10.

Oxidized glutathione

A GLUTATHIONE dimer formed by a disulfide bond between the cysteine sulfhydryl side chains during the course of being oxidized. [from MeSH]

MedGen UID:
29640
Concept ID:
C0061516
Amino Acid, Peptide, or Protein; Biologically Active Substance; Pharmacologic Substance
11.

Kartagener syndrome

Primary ciliary dyskinesia (PCD) is associated with situs abnormalities, abnormal sperm motility, and abnormal ciliary structure and function that result in retention of mucus and bacteria in the respiratory tract leading to chronic otosinopulmonary disease. More than 75% of full-term neonates with PCD have ‘neonatal respiratory distress’ requiring supplemental oxygen for days to weeks. Chronic airway infection, apparent in early childhood, results in bronchiectasis that is almost uniformly present in adulthood. Nasal congestion and sinus infections, apparent in early childhood, persist through adulthood. Chronic/recurrent ear infection, apparent in most young children, can be associated with transient or later irreversible hearing loss. Situs inversus totalis (mirror-image reversal of all visceral organs with no apparent physiologic consequences) is present in 40%-50% of individuals with PCD; heterotaxy (discordance of right and left patterns of ordinarily asymmetric structures that can be associated with significant malformations) is present in approximately 12%. Virtually all males with PCD are infertile as a result of abnormal sperm motility. [from GeneReviews]

MedGen UID:
9615
Concept ID:
C0022521
Congenital Abnormality; Disease or Syndrome
12.

Primary ciliary dyskinesia

Primary ciliary dyskinesia (PCD) is associated with situs abnormalities, abnormal sperm motility, and abnormal ciliary structure and function that result in retention of mucus and bacteria in the respiratory tract leading to chronic otosinopulmonary disease. More than 75% of full-term neonates with PCD have ‘neonatal respiratory distress’ requiring supplemental oxygen for days to weeks. Chronic airway infection, apparent in early childhood, results in bronchiectasis that is almost uniformly present in adulthood. Nasal congestion and sinus infections, apparent in early childhood, persist through adulthood. Chronic/recurrent ear infection, apparent in most young children, can be associated with transient or later irreversible hearing loss. Situs inversus totalis (mirror-image reversal of all visceral organs with no apparent physiologic consequences) is present in 40%-50% of individuals with PCD; heterotaxy (discordance of right and left patterns of ordinarily asymmetric structures that can be associated with significant malformations) is present in approximately 12%. Virtually all males with PCD are infertile as a result of abnormal sperm motility. [from GeneReviews]

MedGen UID:
3467
Concept ID:
C0008780
Disease or Syndrome
13.

Antioxidants

Antioxidants are man-made or natural substances that may prevent or delay some types of cell damage. Antioxidants are found in many foods, including fruits and vegetables. They are also available as dietary supplements. Examples of antioxidants include. - Beta-carotene . - Lutein . - Lycopene. - Selenium. - Vitamin A. - Vitamin C. - Vitamin E. Vegetables and fruits are rich sources of antioxidants. There is good evidence that eating a diet with lots of vegetables and fruits is healthy and lowers risks of certain diseases. But it isn't clear whether this is because of the antioxidants, something else in the foods, or other factors. High-dose supplements of antioxidants may be linked to health risks in some cases. For example, high doses of beta-carotene may increase the risk of lung cancer in smokers. High doses of vitamin E may increase risks of prostate cancer and one type of stroke. Antioxidant supplements may also interact with some medicines. To minimize risk, tell you of your health care providers about any antioxidants you use. NIH: National Center for Complementary and Integrative Health.  [from MedlinePlus]

MedGen UID:
1608
Concept ID:
C0003402
Pharmacologic Substance
14.

Superoxol

MedGen UID:
195886
Concept ID:
C0699404
Indicator, Reagent, or Diagnostic Aid; Inorganic Chemical; Pharmacologic Substance
15.

Oxydol

MedGen UID:
181798
Concept ID:
C0949336
Indicator, Reagent, or Diagnostic Aid; Pharmacologic Substance
16.

Perhydrol

MedGen UID:
148496
Concept ID:
C0699403
Indicator, Reagent, or Diagnostic Aid; Inorganic Chemical; Pharmacologic Substance
17.

Physiological stress

The unfavorable effect of environmental factors (stressors) on the physiological functions of an organism. Prolonged unresolved physiological stress can affect HOMEOSTASIS of the organism, and may lead to damaging or pathological conditions. [from MeSH]

MedGen UID:
105278
Concept ID:
C0449430
Pathologic Function
18.

Mutagenesis Process

OBSOLETE. The process by which genetic material undergoes a detectable and heritable structural change. There are three categories of mutation: genome mutations, involving addition or subtraction of one or more whole chromosomes; chromosome mutations, which alter the structure of chromosomes; and gene mutations, where the structure of a gene is altered at the molecular level. [ISBN:0198506732] [from GO]

MedGen UID:
86969
Concept ID:
C0079866
Molecular Function
19.

Oxidation-reduction

A chemical reaction in which an electron is transferred from one molecule to another. The electron-donating molecule is the reducing agent or reductant; the electron-accepting molecule is the oxidizing agent or oxidant. Reducing and oxidizing agents function as conjugate reductant-oxidant pairs or redox pairs (Lehninger, Principles of Biochemistry, 1982, p471). [from MeSH]

MedGen UID:
18243
Concept ID:
C0030012
Molecular Function
20.

Hydrogen Peroxide

A strong oxidizing agent used in aqueous solution as a ripening agent, bleach, and topical anti-infective. It is relatively unstable and solutions deteriorate over time unless stabilized by the addition of acetanilide or similar organic materials. [from MeSH]

MedGen UID:
9340
Concept ID:
C0020281
Indicator, Reagent, or Diagnostic Aid; Inorganic Chemical; Pharmacologic Substance
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