Medical Conditions Terminology in Category P

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P1 Bacteriophage Artificial Chromosomes

DNA constructs that are derived from the DNA of P1 BACTERIOPHAGE. They can carry large amounts (about 100-300 kilobases) of other sequence for a variety of bioengineering purposes.

p150,95 Antigen

A major adhesion-associated heterodimer molecule expressed by human monocytes, granulocytes, NK cells, and some lymphocytes. The alpha subunit is the CD11c antigen (also called Leu-M5), a surface antigen expressed on some myeloid cells. The beta subunit is the CD18 antigen (ANTIGENS, CD18). The complement 4-binding protein has been shown to play an important role in cell-cell and cell-substrate adhesive interactions.

P1-Derived Artificial Chromosome

DNA constructs that are derived from the DNA of P1 BACTERIOPHAGE. They can carry large amounts (about 100-300 kilobases) of other sequence for a variety of bioengineering purposes.

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Pain Assessment

Scales, questionnaires, tests, and other methods used to assess pain severity and duration in patients or experimental animals to aid in diagnosis, therapy, and physiological studies.

Panic Attack

A type of anxiety disorder characterized by unexpected panic attacks that last minutes or, rarely, hours. Panic attacks begin with intense apprehension, fear or terror and, often, a feeling of impending doom. Symptoms experienced during a panic attack include dyspnea or sensations of being smothered; dizziness, loss of balance or faintness; choking sensations; palpitations or accelerated heart rate; shakiness; sweating; nausea or other form of abdominal distress; depersonalization or derealization; paresthesias; hot flashes or chills; chest discomfort or pain; fear of dying and fear of not being in control of oneself or going crazy. Agoraphobia may also develop. Similar to other anxiety disorders, it may be inherited as an autosomal dominant trait.

Paraneoplastic Autonomic Dysfunction

Degenerative or inflammatory conditions affecting the central or peripheral nervous system that develop in association with a systemic neoplasm without direct invasion by tumor. They may be associated with circulating antibodies that react with the affected neural tissue. (Intern Med 1996 Dec;35(12):925-9)

Partial Androgen Insensitivity Syndrome

A familial form of PSEUDOHERMAPHRODITISM transmitted as an X-linked recessive trait. These patients have a karyotype of 46,XY with end-organ resistance to androgen due to mutations in the androgen receptor (RECEPTORS, ANDROGEN; AR) gene. Severity of the defect in AR quantity or quality correlates with their phenotypes. The phenotype spectrum varies from those with normal female external genitalia in ANDROGEN-INSENSITIVITY SYNDROME, through those with genital ambiguity in Reifenstein Syndrome, to that of a normal male with INFERTILITY.

Partial Anencephaly

A malformation of the nervous system caused by failure of the anterior neuropore to close. Infants are born with intact spinal cords, cerebellums, and brainstems, but lack formation of neural structures above this level. The skull is only partially formed but the eyes are usually normal. This condition may be associated with folate deficiency. Affected infants are only capable of primitive (brain stem) reflexes and usually do not survive for more than two weeks. (From Menkes, Textbook of Child Neurology, 5th ed, p247)

Partial Argininosuccinic Acid Synthetase Deficiency Disease

A group of diseases related to a deficiency of the enzyme ARGININOSUCCINATE SYNTHASE which causes an elevation of serum levels of CITRULLINE. In neonates, clinical manifestations include lethargy, hypotonia, and SEIZURES. Milder forms also occur. Childhood and adult forms may present with recurrent episodes of intermittent weakness, lethargy, ATAXIA, behavioral changes, and DYSARTHRIA. (From Menkes, Textbook of Child Neurology, 5th ed, p49)

Passive Antibody Transfer

Transfer of immunity from immunized to non-immune host by administration of serum antibodies, or transplantation of lymphocytes (ADOPTIVE TRANSFER).