scholarly journals Clinical manifestations and molecular aspects of phosphoribosylpyrophosphate synthetase superactivity in females

Rheumatology ◽  
2018 ◽  
Vol 57 (7) ◽  
pp. 1180-1185 ◽  
Author(s):  
Marie Zikánová ◽  
Dawn Wahezi ◽  
Arielle Hay ◽  
Blanka Stibůrková ◽  
Charles Pitts ◽  
...  
Keyword(s):  
Clinical Manifestations ◽  
Molecular Aspects ◽  
Phosphoribosylpyrophosphate Synthetase

scholarly journals Toxocariasis: Clinical Aspects, Epidemiology, Medical Ecology, and Molecular Aspects

2003 ◽  
Vol 16 (2) ◽  
pp. 265-272 ◽  
Author(s):  
Dickson Despommier
Keyword(s):  
Clinical Manifestations ◽  
Local Environment ◽  
Nematode Species ◽  
Larva Migrans ◽  
Clinical Aspects ◽  
Urban Centers ◽  
Larval Stages ◽  
Health Initiatives ◽  
Molecular Aspects ◽  
And Control

SUMMARY Toxocariasis is caused by a series of related nematode species (ascarids) that routinely infect dogs and cats throughout the world. The eggs from these ascarids are common environmental contaminants of human habitation, due largely to the fact that many kinds of dogs and cats serve as pets, while countless others run wild throughout the streets of most urban centers. The eggs, present in dog and cat feces, become infectious within weeks after they are deposited in the local environment (e.g., sandboxes, city parks, and public beaches, etc.). Humans, particularly children, frequently ingest these eggs by accident and become infected. Infection in humans, in contrast to their definitive hosts, remains occult, often resulting in disease caused by the migrating larval stages. Visceral larva migrans (VLM) and ocular larva migrans (OLM) are two clinical manifestations that result in definable syndromes and present as serious health problems wherever they occur. Diagnosis and treatment of VLM and OLM are difficult. These issues are summarized in this review, with emphasis on the ecology of transmission and control of spread to both humans and animals through public health initiatives employing treatment of pets and environmental intervention strategies that limit the areas that dogs and cats are allowed within the confines of urban centers.

scholarly journals Clinical and mutational spectrum of 4 Chinese families with glutaric aciduria type 1

2019 ◽  
Author(s):  
Xiaorong Shi ◽  
Qiaoyan Shao ◽  
Aidong Zheng ◽  
Wenghuang Xie
Keyword(s):  
Mutational Analysis ◽  
Southern China ◽  
Clinical Manifestations ◽  
Gene Mutations ◽  
Glutaric Aciduria Type ◽  
Chinese Patients ◽  
Type I ◽  
Glutaric Aciduria Type 1 ◽  
Glutaric Aciduria ◽  
Molecular Aspects

Abstract Background To investigate clinical presentation and molecular aspects of five patients suffered from glutaric aciduria type I (GA-I ), a rare neurometabolic disorder caused by glutaryl-CoA dehydrogenase deficiency due to GCDH gene mutations. Methods All five patients were diagnosed by elevated urinary glutaric acid and GCDH gene analysis. Low protein diet supplemented with special formula, GABA analog and L-carnitine were initialed following laboratory confirmation of diagnosis. The clinical and biochemical features were analyzed, and mutational analysis of GCDH was conducted using Sanger sequencing. Results Clinical manifestations of 5 patients varied from macrocephaly to severe encephalopathy, with notably different phenotype between siblings with the same mutations. Three members present complex heterozygous mutations, while two sisters present homozygous mutations. Among them, four mutations in GCDH were identified (c.1133C>T 、c.1244-2A>C 、c.339delT 、c.406G>T). Of these four mutations, c.1244- 2A>C was found in four patients and c.339delT and c.1133C>T has not yet been reported until now. Conclusions In 5 Chinese patients with GA1, two novel mutations of GCDH gene were identified, which may expand the mutation spectrum of GCDH gene. What we found confirm that there is no correlation between clinical phenotype and genotype in GA-I patients, and c.1244-2A>C may be mutation hotspot in Southern China.

Morphologic alteration in the muscles of patients with hypokalemic periodic paralysis or myopathy

1990 ◽  
Vol 48 (3) ◽  
pp. 222-223
Author(s):  
T. Shimizu ◽  
Y. Muranaka ◽  
I. Ohta ◽  
N. Honda
Keyword(s):  
Clinical Manifestations ◽  
Quadriceps Muscle ◽  
Honeycomb Structure ◽  
Periodic Paralysis ◽  
Ultrastructural Changes ◽  
Hypokalemic Periodic Paralysis ◽  
Electron Microscopic ◽  
Tubular Aggregates ◽  
Hypokalemic Myopathy ◽  
Transmission Electron

There have been many reports on ultrastructural alterations in muscles of hypokalemic periodic paralysis (hpp) and hypokalemic myopathy(hm). It is stressed in those reports that tubular structures such as tubular aggregates are usually to be found in hpp as a characteristic feature, but not in hm. We analyzed the histological differences between hpp and hm, comparing their clinical manifestations and morphologic changes in muscles. Materials analyzed were biopsied muscles from 18 patients which showed muscular symptoms due to hypokalemia. The muscle specimens were obtained by means of biopsy from quadriceps muscle and fixed with 2% glutaraldehyde (pH 7.4) and analyzed by ordinary method and modified Golgimethod. The ultrathin section were examined in JEOL 200CX transmission electron microscopy.Electron microscopic examinations disclosed dilated t-system and terminal cistern of sarcoplasmic reticulum (SR)(Fig 1), and an unique structure like “sixad” was occasionally observed in some specimens (Fig 2). Tubular aggregates (Fig 3) and honeycomb structure (Fig 4) were also common characteristic structures in all cases. These ultrastructural changes were common in both the hypokalemic periodic paralysis and the hypokalemic myopathy, regardless of the time of biopsy or the duration of hypokalemia suffered.

Nutritional B12 Deficiency in Infants of Vitamin B12-Deficient Mothers

2011 ◽  
Vol 81 (5) ◽  
pp. 328-334 ◽  
Author(s):  
Oya Halicioglu ◽  
Sezin Asik Akman ◽  
Sumer Sutcuoglu ◽  
Berna Atabay ◽  
Meral Turker ◽  
...  
Keyword(s):  
Megaloblastic Anemia ◽  
Maternal Diet ◽  
Clinical Manifestations ◽  
Serum Vitamin ◽  
Failure To Thrive ◽  
Clinical Findings ◽  
Vitamin B ◽  
Animal Products ◽  
Hematological Evaluation ◽  
Nutritional Vitamin

Aim: Nutritional vitamin B12 deficiency in infants may occur because the maternal diet contains inadequate animal products. Clinical presentations of the infants who had nutritional vitamin B12 deficiency were analyzed in this study. Subjects and Methods: Patients with nutritional vitamin B12 deficiency were enrolled in the study between 2003 and 2010. The diagnosis was based on a nutritional history of mothers and infants, clinical findings, hematological evaluation, and low level of serum vitamin B12. Results: Thirty children aged 1 - 21 months constituted the study group. Poverty was the main cause of inadequate consumption of animal products of the mothers. All infants had predominantly breastfed. The most common symptoms were developmental delay, paleness, apathy, lethargy, anorexia, and failure to thrive. Hematological findings were megaloblastic anemia (83.3 %), thrombocytopenia (30 %), and severe anemia (13.3 %). All of the mothers had low serum B12 levels; eight of them had megaloblastic anemia. Conclusion: The unusual clinical manifestations of vitamin B12 deficiency may also be seen apart from neurological and hematological findings. Nutritional vitamin B12 deficiency due to maternal deficiency might be a serious health problem in infants. Therefore, screening and supplementation of pregnant and lactating women to prevent infantile vitamin B12 deficiency should be considered.

HIF1-α-Mediated Gene Expression Induced by Vitamin B1 Deficiency

2013 ◽  
Vol 83 (3) ◽  
pp. 188-197 ◽  
Author(s):  
Rebecca L. Sweet ◽  
Jason A. Zastre
Keyword(s):  
Gene Expression ◽  
Thiamine Deficiency ◽  
Glucose Transporter ◽  
Neuroblastoma Cell ◽  
Hypoxia Inducible Factor ◽  
Clinical Manifestations ◽  
Vitamin B1 ◽  
Low Oxygen ◽  
Glucose Transporter 1 ◽  
Metabolic Intermediates

It is well established that thiamine deficiency results in an excess of metabolic intermediates such as lactate and pyruvate, which is likely due to insufficient levels of cofactor for the function of thiamine-dependent enzymes. When in excess, both pyruvate and lactate can increase the stabilization of the hypoxia-inducible factor 1-alpha (HIF-1α) transcription factor, resulting in the trans-activation of HIF-1α regulated genes independent of low oxygen, termed pseudo-hypoxia. Therefore, the resulting dysfunction in cellular metabolism and accumulation of pyruvate and lactate during thiamine deficiency may facilitate a pseudo-hypoxic state. In order to investigate the possibility of a transcriptional relationship between hypoxia and thiamine deficiency, we measured alterations in metabolic intermediates, HIF-1α stabilization, and gene expression. We found an increase in intracellular pyruvate and extracellular lactate levels after thiamine deficiency exposure to the neuroblastoma cell line SK-N-BE. Similar to cells exposed to hypoxia, there was a corresponding increase in HIF-1α stabilization and activation of target gene expression during thiamine deficiency, including glucose transporter-1 (GLUT1), vascular endothelial growth factor (VEGF), and aldolase A. Both hypoxia and thiamine deficiency exposure resulted in an increase in the expression of the thiamine transporter SLC19A3. These results indicate thiamine deficiency induces HIF-1α-mediated gene expression similar to that observed in hypoxic stress, and may provide evidence for a central transcriptional response associated with the clinical manifestations of thiamine deficiency.

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