scholarly journals Metabolic Profiling in Mice Infected with Echinococcosis

2021 ◽  
Author(s):  
Mingxing Zhu ◽  
Xiancai Du ◽  
Hongxia Xu ◽  
Songhao Yang ◽  
Chan Wang ◽  
...  
Keyword(s):  
Echinococcus Granulosus ◽  
Clinical Symptoms ◽  
Screening Method ◽  
Infection Model ◽  
Pathophysiological Process ◽  
Biological Responses ◽  
Highly Sensitive ◽  
Objective Detection ◽  
Internal And External Factors

Abstract Background: Echinococcosis is a severe zoonotic parasitic disease, which seriously affects the health of the hosts. The diagnosis of echinococcosis depends on objective detection of clinical symptoms. However, the patient is often in the late stage of the disease when the symptoms appear, limiting the early diagnosis of echinococcosis. The treatment and prognosis of the patients are seriously hampered due to long-term asymptomatic latency. Metabolomics is a new discipline developed in the late 1990s. It reflects a series of biological responses in a pathophysiological process by demonstrating the changes in metabolism under the influence of internal and external factors. When the organism is invaded by pathogens, the alteration in characteristics of metabolites in cells becomes exceedingly sensitive. Here, we used a liquid chromatography with tandem mass spectrometry (LC-MS/MS) system-based metabolomics approach to determine the molecular mechanism of cystic echinococcosis (CE) and to develop an effective method for CE diagnosis. Methods: Eight-weeks-old female Balb/c mice were divided into normal and Echinococcus granulosus infection groups. To develop the Echinococcus granulosus infection model, mice were infected with protoscolex. Six weeks later, the abdomen of mice was obviously bulged. An LC-MS/MS system-based metabolomics approach was used for the analysis of the liver and feces to reveal the metabolic profiles of mice with echinococcosis. Results: We found that the metabolism of nucleotides, alkaloids, amino acids, amides, and organic acids in mice is closely interrelated with Echinococcus granulosus infectionConclusion: The metabolomics approach used in this study provides a reference for a highly sensitive and specific diagnostic and screening method for echinococcosis.

scholarly journals Metabolic profiling of liver and faeces in mice infected with echinococcosis

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Mingxing Zhu ◽  
Xiancai Du ◽  
Hongxia Xu ◽  
Songhao Yang ◽  
Chan Wang ◽  
...  
Keyword(s):  
Metabolic Pathways ◽  
Screening Method ◽  
Infection Model ◽  
Parasitic Disease ◽  
Biological Responses ◽  
Highly Sensitive ◽  
Isoleucine Biosynthesis ◽  
Phenylalanine Metabolism ◽  
Internal And External Factors

Abstract Background Echinococcosis is a severe zoonotic parasitic disease which severely affects the health of the hosts. The diagnosis of echinococcosis depends mainly on imaging examination. However, the patient is often in the late stage of the disease when the symptoms appear, thus limiting the early diagnosis of echinococcosis. The treatment and prognosis of the patients are hampered because of long-term asymptomatic latency. Metabolomics is a new discipline developed in the late 1990s. It reflects a series of biological responses in pathophysiological processes by demonstrating the changes in metabolism under the influence of internal and external factors. When the organism is invaded by pathogens, the alteration in the characteristics of metabolites in cells becomes extremely sensitive. Here, we used a metabolomics approach involving liquid chromatography coupled with tandem mass spectrometry (LC–MS/MS) to determine the molecular mechanism of cystic echinococcosis (CE) and to develop an effective method for CE diagnosis. Methods Twenty 8-week-old female BALB/c mice were divided into normal and Echinococcus granulosus infection groups. To develop the E. granulosus infection model, mice were infected with protoscoleces. Six weeks later, the abdomens of the mice showed significant bulging. An LC–MS/MS system-based metabolomics approach was used to analyse the liver and faeces to reveal the metabolic profiles of mice with echinococcosis. Results We found that the metabolism of nucleotides, alkaloids, amino acids, amides, and organic acids in mice is closely interrelated with E. granulosus infection. In the liver, the metabolic pathways of tyrosine and tryptophan biosynthesis; phenylalanine, valine, leucine and isoleucine biosynthesis; and phenylalanine metabolism were notably associated with the occurrence and development of hydatid disease, and in the faeces, pantothenate and CoA biosynthesis are thought to be closely associated with the development of CE. Conclusion The metabolomics approach used in this study provides a reference for a highly sensitive and specific diagnostic and screening method for echinococcosis. Graphic Abstract

Ovarian Dysfunction in Fetally Irradiated Beagles

1977 ◽  
Vol 35 ◽  
pp. 658-659
Author(s):  
T. M. Seed ◽  
M. H. Sanderson ◽  
D. L. Gutzeit ◽  
T. E. Fritz ◽  
D. V. Tolle ◽  
...  
Keyword(s):  
Gamma Rays ◽  
Low Dose ◽  
Long Term Effects ◽  
Ovarian Dysfunction ◽  
Dose Rates ◽  
Highly Sensitive ◽  
Microscopic Evaluation ◽  
Ovarian Pathology ◽  
Normal Offspring

The developing mammalian fetus is thought to be highly sensitive to ionizing radiation. However, dose, dose-rate relationships are not well established, especially the long term effects of protracted, low-dose exposure. A previous report (1) has indicated that bred beagle bitches exposed to daily doses of 5 to 35 R 60Co gamma rays throughout gestation can produce viable, seemingly normal offspring. Puppies irradiated in utero are distinguishable from controls only by their smaller size, dental abnormalities, and, in adulthood, by their inability to bear young.We report here our preliminary microscopic evaluation of ovarian pathology in young pups continuously irradiated throughout gestation at daily (22 h/day) dose rates of either 0.4, 1.0, 2.5, or 5.0 R/day of gamma rays from an attenuated 60Co source. Pups from non-irradiated bitches served as controls. Experimental animals were evaluated clinically and hematologically (control + 5.0 R/day pups) at regular intervals.

scholarly journals Endoscopically controlled surgery with open hemilaminectomy for the treatment of intradural extramedullary tumors: an operative technique and short-term outcomes of 20 consecutive cases

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Xiaorong Yan ◽  
Huiqing Wang ◽  
Cai Li ◽  
Yuanxiang Lin ◽  
Lin Lin ◽  
...  
Keyword(s):  
Surgical Technique ◽  
Spinal Deformity ◽  
Tumor Recurrence ◽  
Clinical Symptoms ◽  
Short Term ◽  
Before And After ◽  
Intradural Extramedullary ◽  
Controlled Surgery

Abstract Background To present a surgical technique for the treatment of intradural extramedullary (IDEM) tumors by using endoscopically controlled surgery with open hemilaminectomy technique. Methods In this study, 20 patients with 22 IDEM tumors were enrolled. An endoscopically controlled surgery with open hemilaminectomy was employed to remove the tumors. Data related to clinical symptoms and medical images before and after surgery were collected for perioperative evaluation and follow-up analysis. Results All the tumors in 20 patients were well removed. The clinical symptoms were significantly reduced in all the patients as well. The short-term follow-up data showed that there was no tumor recurrence or spinal deformity. Conclusion The endoscopically controlled surgery with open hemilaminectomy technique provided favorable exposure and satisfactory resection to the IDEM tumors. It may be an effective surgical method for treating IDEM tumors. Larger samples and longer follow-up data are needed to verify its long-term effectiveness.

scholarly journals COVID-19 in an Asymptomatic Renal Transplant Recipient Employed in the Health Care Setting: A Case Report

2021 ◽  
Author(s):  
Harsha Adnani ◽  
Akshay Khatri ◽  
Nirav Agrawal ◽  
Ernesto Molmenti ◽  
Madhu Bhaskaran
Keyword(s):  
Health Care ◽  
Renal Transplant ◽  
Transplant Recipient ◽  
Renal Transplant Recipient ◽  
Clinical Symptoms ◽  
Severe Disease ◽  
Care Facility ◽  
Health Care Facility ◽  
Asymptomatic Patients

AbstractDuring the ongoing pandemic, there have been varying presentations of coronavirus disease 2019 (COVID-19) infection, with the concern that patients who are immunosuppressed (due to underlying medical conditions and/or therapies) are at higher risk of severe disease. We report the case of an elderly renal transplant recipient working in a long-term health care facility who was being monitored by weekly surveillance testing and tested positive for COVID-19 by polymerase chain reaction (PCR) testing, despite having no clinical symptoms. He recovered with supportive care, despite being on multiple long-term immunosuppressant drugs and having multiple comorbidities. Additionally, it was found that he did not mount an antibody response, when he tested negative by serologic testing. Through this case, we wish to highlight the unique clinical scenario of asymptomatic patients who may have an underwhelming immune response to COVID-19, but may nevertheless be an important source of dissemination. We further discuss the probable mechanism of such asymptomatic presentations in immunosuppressed patients, while reinforcing the importance of self-isolation of COVID-19 patients (particularly in asymptomatic health care workers).

scholarly journals Clinical characteristics and outcomes of COVID-19 long-term nucleic acid positive patients

2021 ◽  
pp. 1-10
Author(s):  
Xuan Zhu ◽  
Xinxin Zhu ◽  
Min Wang ◽  
Fang Yang ◽  
Zhibing Sun ◽  
...  
Keyword(s):  
Nucleic Acid ◽  
Clinical Characteristics ◽  
Clinical Symptoms ◽  
Control Group ◽  
Viral Shedding ◽  
Imaging Characteristics ◽  
And Gender ◽  
Acid Test ◽  
Pulmonary Ct

OBJECTIVE: This study aimed to investigate the clinical characteristics and outcomes of coronavirus disease-19 (COVID-19) long-term nucleic acid positive patients (hereinafter referred to as CLTAPs). METHODS: Patients were recruited from the Xiaogan Central Hospital between 16 January 2020 and 28 March 2020. Among the 562 cases of patients with laboratory-identified COVID-19 infection by real-time polymerase chain reaction (qtPCR), 19 cases of COVID-19 patients with more than 41 days from the first to the last time of nucleic acid test were selected as the study group, and 76 cases of age- and gender-matched COVID-19 patients were selected as the control group (hereinafter referred to as C-CLTAPs). Demographic characteristics, clinical symptoms, laboratory examination and computed tomography (CT) imaging characteristics were retrospectively analyzed. RESULTS: On admission, among the 562 cases of patients with COVID-19, there were 398 cases of ordinary COVID-19 patients, 99 cases of severe COVID-19 patients and 99 cases of critical COVID-19 patients. CLTAPs had milder clinical symptoms and longer viral shedding time in comparison to C-CLTAPs. Compared to C-CLTAPs, CLTAPs had a lower infection index at admission. CLTAPs used less oxygen therapy and a higher proportion of hydroxychloroquine treatment in comparison to C-CLTAPs. In comparison to C-CLTAPs, CLTAPs showed slower pulmonary CT progression and faster pulmonary CT absorption. CONCLUSION: In this study, out of the 562 cases, we found 19 CLTAPs. The clinical differences between CLTAPs and C-CLTAPs were compared and analyzed. We hope that these finding can provide a theoretical basis for the treatment of CLTAPs.

LRF and TRF test during long-term danazol treatment: increase of the LH and FSH responses but decrease of the prolactin and TSH responses

1983 ◽  
Vol 104 (1) ◽  
pp. 1-5 ◽  
Author(s):  
J. Leppäluoto ◽  
L. Rönnberg ◽  
P. Ylöstalo
Keyword(s):  
Clinical Symptoms ◽  
Follicular Phase ◽  
Blood Samples ◽  
Hormone Levels ◽  
Coefficients Of Variation ◽  
The Mean ◽  
Thyroid Hormone Levels ◽  
Low Serum

Abstract. Seven patients suffering from severe endometriosis were treated with danazol 200 mg × 3 daily for 6 months. Clinical symptoms were alleviated and menses disappeared in response to the treatment. After cessation of the treatment the menstrual bleedings returned in 1–3 months. Blood samples for determination of gonadotrophins, prolactin (Prl), oestradiol (E2), progesterone, thyroid hormones and thyrotrophin in radioimmunoassays were taken and a combined TRF and LRF test carried out in the follicular phase before treatment, at the 6th month of treatment and after reappearance of the first menses. There were no statistically significant changes in the basal levels of serum FSH, LH or TSH during the danazol treatment. Neither was there any change in episodic secretions of FSH, LH or Prl, as determined by the mean coefficients of variation of the hormone levels in seven consecutive samples taken at 20 min intervals. On the other hand, serum E2, Prl and thyroid hormone levels were significantly decreased in the 6th month of treatment. In the TRF-LRF test the responses of serum FSH and LH were significantly higher and those of serum Prl and TSH significantly lower during danazol treatment than before. Prl responses remained lowered after the treatment. It appears that low serum oestrogen levels, induced by the danazol treatment, sensitize the pituitary gonadotrophs to exogenous LRF, but make the sensitivity of thyrotrophs and lactotrophs lower to exogenous TRF. These results thus indicate that danazol does not make the pituitary gonadotrophs insensitive to LRF, but danazol may rather inhibit the secretion of hypothalamic LRF.

Characterization and Fuel Cell Testing of Radiation-Grafted Psi Membranes

1999 ◽  
Vol 575 ◽  
Author(s):  
H.-P. Brack ◽  
M. M. Koebel ◽  
A. Tsukada ◽  
J. Huslage ◽  
F. Buechi ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Oxidative Stability ◽  
Screening Method ◽  
Exchange Capacity ◽  
Ex Situ ◽  
Active Area ◽  
Rapid Screening ◽  
Raman Spectroscopic ◽  
Current Voltage

ABSTRACTWe have demonstrated earlier the useful performance of our PSI radiation-grafted membranes in terms of the current-voltage characteristics of 30 cm2 active area fuel cells containing these membranes and their long-term testing over 6,000 h at 60 °C. We report here on testing of PSI radiation-grafted membranes in these fuel cells at 80 °C and in short stacks comprised of two or four 100 cm2 active area cells. The in-situ degradation of membranes has been investigated by characterizing membranes both before testing in fuel cells and post-mortem after testing in fuel cells. Characterization was accomplished by means of ion-exchange capacity and infrared and Raman spectroscopic measurements. In addition, a rapid screening method for our ex-situ testing of the oxidative stability of proton-conducting membranes was developed in this work. Comparison of the initial screening test results concerning the oxidative stability of some perfluorinated, partially-fluorinated, and non-fluorinated membranes compare well qualitatively with the relative stability of these same membranes during their long-term testing in fuel cells.

Long-term outcomes in patients with schizophrenia treated with risperidone long-acting injection or oral antipsychotics in Spain: Results from the electronic Schizophrenia Treatment Adherence Registry (e-STAR)

2009 ◽  
Vol 24 (5) ◽  
pp. 287-296 ◽  
Author(s):  
J.M. Olivares ◽  
A. Rodriguez-Morales ◽  
J. Diels ◽  
M. Povey ◽  
A. Jacobs ◽  
...  
Keyword(s):  
Observational Study ◽  
Treatment Adherence ◽  
Prospective Observational Study ◽  
Clinical Symptoms ◽  
Retrospective Chart Review ◽  
Treatment Retention ◽  
Severity Scores ◽  
Long Term Treatment ◽  
Long Acting

AbstractBackgroundThe electronic Schizophrenia Treatment Adherence Registry (e-STAR) is a prospective, observational study of patients with schizophrenia designed to evaluate long-term treatment outcomes in routine clinical practice.MethodsParameters were assessed at baseline and at 3 month intervals for 2 years in patients initiated on risperidone long-acting injection (RLAI) (n = 1345) or a new oral antipsychotic (AP) (n = 277; 35.7% and 36.5% on risperidone and olanzapine, respectively) in Spain. Hospitalization prior to therapy was assessed by a retrospective chart review.ResultsAt 24 months, treatment retention (81.8% for RLAI versus 63.4% for oral APs, p < 0.0001) and reduction in Clinical Global Impression Severity scores (−1.14 for RLAI versus −0.94 for APs, p = 0.0165) were significantly higher with RLAI. Compared to the pre-switch period, RLAI patients had greater reductions in the number (reduction of 0.37 stays per patient versus 0.2, p < 0.05) and days (18.74 versus 13.02, p < 0.01) of hospitalizations at 24 months than oral AP patients.ConclusionsThis 2 year, prospective, observational study showed that, compared to oral antipsychotics, RLAI was associated with better treatment retention, greater improvement in clinical symptoms and functioning, and greater reduction in hospital stays and days in hospital in patients with schizophrenia. Improved treatment adherence, increased efficacy and reduced hospitalization with RLAI offer the opportunity of substantial therapeutic improvement in schizophrenia.

Pierwotna małopłytkowość immunologiczna u dzieci

2018 ◽  
Vol 22 (4) ◽  
Author(s):  
Anna Dusza ◽  
Michał Matysiak
Keyword(s):  
Immune Thrombocytopenia ◽  
Clinical Symptoms ◽  
Pediatric Population ◽  
Current Data ◽  
Current Investigation ◽  
Surgical Interventions ◽  
Hematological Disorders ◽  
Primary Immune Thrombocytopenia

In this article we present current investigation on primary immune thrombocytopenia in children. There are described pathomorphology, clinical symptoms, diagnosis and treatment. We also present current data from literature about genetic tests and latest data on treating options in children. Primary immune thrombocytopenia (ITP) is one of the most frequent hematological disorders in pediatric population. Although the majority of children have a self-limited and short duration of the disease. However, approximately 20-30% of those patients can develop chronic ITP, which can cause significant complications and higher mortality and reduced quality of life. Especially regarding to long-term immunosupression or surgical interventions, such like splenectomy and restrictions on daily activities to avoid trauma. Over the past decades a lot of informations has been reported about pathogenic features of ITP. Nowdays, we know that it is not only caused by increased platet destruction and decreased platet production, but also complex, multifactorial immune dysregulation, like loss of immune tolerance and generation of platelet autoantibodies. In this article we present current investigation on ITP including clinical symptoms, diagnosis, pathomorphology and latests options on treatment in children. We also present current data about genetic biomarker, such as Vanin-1 (VNN-1) which has been suggested as one of predictors of chronic disease and potentially can offer early prognosis estimation.

Sign in / Sign up

Export Citation Format

Share Document