What's the difference between agenesis and dysgenesis?
Agenesis
Definition:
(n.) Any imperfect development of the body, or any anomaly of organization.
Example Sentences:
(1) Most thyroid hormone actions, however, appear in the perinatal period, and infants with thyroid agenesis appear normal at birth and develop normally with prompt neonatal diagnosis and treatment.
(2) Of the sampled population, 6.3 per cent exhibited some degree of hypodontia (third molar agenesis excluded).
(3) Especially a total iodide transport defect can easily be misclassified as thyroid agenesis, since radionuclide imaging cannot visualize the thyroid.
(4) In the child born with sacral agenesis, the management of arthrogrypotic-like deformities, spinal and multisystem abnormalities poses several problems to the orthopedist.
(5) Only a few cases of bilateral pulmonary agenesis have been reported.
(6) MRI revealed cranium bifida and agenesis of anterior medullar velum.
(7) This could be the first case of bilateral agenesis of the internal carotid artery reported "in vivo."
(8) To present the experience of a large referral center with patients with the rare but specific syndrome of uterus didelphys, obstructed hemivagina, and ipsilateral renal agenesis.
(9) The renal response to volume expansion was determined in four patients with renal hypertrophy due to unilateral renal agenesis (URA) and in four patients with renal hypertrophy due to nephrectomy (Nz).
(10) Two new cases of callosal agenesis in children of normal intelligence are presented.
(11) Within the past 24 months, we have performed prenatal diagnostic studies in 4 pregnancies known to be at risk for well-described genetic syndrome involving renal abnormalities, ie, Meckel syndrome, Roberts syndrome, and bilateral renal agenesis.
(12) Furthermore, agenesis of incisors, canines and premolars ranges from 0.4% in controls to 1.3% in propositi having reduced ULI and 5.0% in propositi with two missing ULI.
(13) On the basis of a case of agenesis of the gallbladder personally observed the most significant epidemiologic, etiopathogenetic, diagnostic and therapeutic aspects of this rare anatomic anomaly are analyzed.
(14) Labyrinthine trepanation was performed in the majority of 16 patients with minor agenesis of middle ear involving either stapedovestibular ankylosis or absence of fenestra vestibuli.
(15) The nonsurgical subjects with developmental callosal agenesis and acquired pathologic processes involving the callosum revealed a varied, nonspecific reduction in cognitive function most probably related to associated extracallosal hemispheric pathology.
(16) Chromosome analysis of blood cells from a 42-year-old white male with mental retardation, colon carcinoma, horseshoe kidney, absence of left lobe of the liver, agenesis of the gallbladder, and possible Gardner syndrome revealed a constitutional marker chromosome due to del(5)(q13q15) or del(5)(q15q22).
(17) We report 2 cases of uterus didelphys with unilateral hematocolpos and ipsilateral renal agenesis with urological clinical complications.
(18) The developmental origin of arsenate-induced renal agenesis was investigated.
(19) It appears to us that bilateral vas deferens agenesis may be genetic in origin in some patients.
(20) Necropsy findings revealed multiple congenital malformations with occipital meningo-encephalocele and agenesis of the cerebellum, 6 digits on the hands and feet, polycystic kidneys.
Dysgenesis
Definition:
(n.) A condition of not generating or breeding freely; infertility; a form homogenesis in which the hybrids are sterile among themselves, but are fertile with members of either parent race.
Example Sentences:
(1) Instead of later renal failure and, of course, mental retardation, it was the histological features of the fetus eyes which permit to diagnose and exhibit both congenital cataract and irido-corneal angle dysgenesis.
(2) Then, the males with super-unstable oc-mutations were crossed with females with attached X chromosomes, supporting P-M hybrid dysgenesis.
(3) To determine the pathogenesis of carbohydrate intolerance associated with gonadal dysgenesis, plasma glucose, insulin, glucagon, and growth hormone responses to oral glucose and intravenous tolbutamide, arginine and insulin were evaluated in 21 nonobese patients, 7-19 years old.
(4) We suggest that the finding of short stature in patients with 46,XX pure gonadal dysgenesis should not be attributed to the syndrome, but rather requires investigation for possible growth hormone deficiency.
(5) Hypothalamic-pituitary activity was investigated in 20 women with primary amenorrhoea, in whom gonadal dysgenesis and lower Müllerian duct anomalies had been excluded.
(6) To determine the ability of the P-M hybrid dysgenesis system of Drosophila melanogaster to generate mutations affecting quantitative traits, X chromosome lines were constructed in which replicates of isogenic M and P strain X chromosomes were exposed to a dysgenic cross, a nondysgenic cross, or a control cross, and recovered in common autosomal backgrounds.
(7) Histological evidence of mixed gonadal dysgenesis with intragonadal tumour was observed, confirming the occurrence of gonadoblastoma associated with mosaicism in which at least one cell bears a Y chromosome.
(8) Cancer risk factors were identified in individual patients with predisposing genetic and congenital disorders: neurofibromatosis (brain tumor), hereditary immunodeficiency (lymphoma), Down's syndrome (leukemia), XY gonadal dysgenesis (germ cell tumor), giant nevus (melanoma), and meningocele (sacral teratocarcinoma).
(9) Cerebral angiography is the most valuable method for the diagnosis of this anomaly and its venous phase reveals dysgenesis of the galenic drainage as well as of the dural sinuses.
(10) Three had scrotal hypospadias and mixed gonadal dysgenesis.
(11) The olfactory, auditory, and gustatory functions of 20 women with gonadal dysgenesis were studied.
(12) A case of mixed gonadal dysgenesis with anaplastic seminoma is herein reported.
(13) On the basis of results obtained from an oral glucose tolerance test, (OGTT), twenty patients with gonadal dysgenesis were classified as normal (N = 8) and diabetic (N = 12).
(14) To determine the influence of estrogenic steroids on serum FSH bioactivity (B) and immunoreactivity (I) and the FSH isoform distribution profiles, we studied normal women during ovulatory menstrual cycles and a patient with gonadal dysgenesis treated with diethylstilbestrol (DES).
(15) The possible role of an intrauterine viral infection as the cause is discussed, as is the possible relationship of this lesion to cerebro-ocular dysgenesis (Warburg syndrome).
(16) Combinations of chromosomes from either the strong or the weak P strain affected both aspects of dysgenesis in a nonadditive fashion, suggesting that the P elements on these chromosomes competed with each other for transposase, the P-encoded function that triggers P element activity.
(17) By several criteria the changes exhibited under the influence of M-5; cn bw are characteristic of the transposable-element systems which produce hybrid dysgenesis.
(18) The preponderance of "females" among the hitherto reported cases of this allegedly autosomal recessive form of lethal drawfism may be due to an increased incidence of an associated XY-gonadal dysgenesis.
(19) Nonspecific abnormalities, as simple renal dysgenesis, may be observed in all chromosomal disorders.
(20) Clinical, hormonal, genetic, laparoscopic and histologic studies revealed three types of the disease: resistant ovary syndrome, dystrophic ovary syndrome, and "pure" gonadal dysgenesis.