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Case Reports in Genetics 2024Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a multisystem disabling disease with unclear etiology and pathophysiology, whose typical symptoms include...
Mitochondrial DNA Missense Mutations ChrMT: 8981A > G and ChrMT: 6268C > T Identified in a Caucasian Female with Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) Triggered by the Epstein-Barr Virus.
Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a multisystem disabling disease with unclear etiology and pathophysiology, whose typical symptoms include prolonged debilitating recovery from fatigue or postexertional malaise (PEM). Disrupted production of adenosine triphosphate (ATP), the intracellular energy that fuels cellular activity, is a cause for fatigue. Here, we present a long-term case of ME/CFS: a 75-year-old Caucasian female patient, whose symptoms of ME/CFS were clearly triggered by an acute infection of the Epstein-Barr virus 24 years ago (mononucleosis). Before then, the patient was a healthy professional woman. A recent DNA sequence analysis identified missense variants of mitochondrial respiratory chain enzymes, including (ChrMT: 8981A > G; Q152R) and (ChrMT: 6268C > T; A122V). Protein subunits ATP6 and Cox1 are encoded by mitochondrial DNA outside of the nucleus: the gene encodes subunit 1 of complex IV (CIV: cytochrome c oxidase) and the gene encodes subunit A of complex V (CV: ATP synthase). CIV and CV are the last two of five essential enzymes that perform the mitochondrial electron transport respiratory chain reaction to generate ATP. Further analysis of the blood sample using transmission electron microscopy demonstrated abnormal, circulating, extracellular mitochondria. These results indicate that the patient had dysfunctional mitochondria, which may contribute directly to her major symptoms, including PEM and neurological and cognitive changes. Furthermore, the identified variants of ATP6 (ChrMT: 8981A > G; Q152R) and Cox1 (ChrMT: 6268C > T; A122V), functioning at a later stage of mitochondrial ATP production, may play a role in the abnormality of the patient's mitochondria and the development of her ME/CFS symptoms.
PubMed: 38756740
DOI: 10.1155/2024/6475425 -
Frontiers in Medicine 2024Arboviruses pose a challenge in ensuring the supply of pathogen-free blood components because they are not routinely screened in blood banks, and blood components from...
OBJECTIVE
Arboviruses pose a challenge in ensuring the supply of pathogen-free blood components because they are not routinely screened in blood banks, and blood components from infected asymptomatic donors could be transfused. This study aimed to detect and characterize arboviral infections in Colombian blood donors.
METHODS
In a cross-sectional study, the prevalence of dengue (DENV), Zika (ZIKV), and chikungunya (CHIKV) viruses and co-infections of blood donors were compared between an epidemic period (November 2019-February 2020, = 462) and an endemic period (November 2021-August 2022, = 1,119). Viral RNA from each donor serum was purified, and the viruses were detected using a previously standardized multiplex hemi-nested RT-PCR protocol. Subsequently, donors who tested positive were surveyed 15 days after the detection of the virus to identify clinical characteristics related to the arboviral infection. The prevalences of each virus were presented as percentages and compared between epidemic and endemic periods.
RESULTS
Significantly higher prevalences were found in the epidemic period compared with the endemic period for DENV (14.5 vs. 1.9%), ZIKV (7.8 vs. 0.3%), CHIKV (8 vs. 3.3%), and co-infections (4.3 vs. 0.2%). The survey response rate of positive donors in the two periods was 83/175 (47%). In total, 57% of the donors surveyed were asymptomatic. Symptomatic donors most frequently reported headache (31%), malaise (13%), arthralgia (10%), and fever/chills (8%).
CONCLUSION
The prevalence observed in epidemic and endemic periods was higher than that reported in other studies in the Americas. The high proportion of asymptomatic cases found, in addition to the mild and nonspecific manifestations among the symptomatic, may limit the effectiveness of the donor selection criteria used to mitigate the risk of transfusion-transmitted arboviruses.
PubMed: 38751980
DOI: 10.3389/fmed.2024.1380129 -
Ocular Oncology and Pathology Apr 2024Intraocular localization of conjunctival squamous cell carcinoma (SCC) is due to scleral or corneal invasion. Herein, we describe the clinical and histopathological...
INTRODUCTION
Intraocular localization of conjunctival squamous cell carcinoma (SCC) is due to scleral or corneal invasion. Herein, we describe the clinical and histopathological findings in four cases of SCC complicated by intraocular invasion, and we review cases reported in the literature and their management. We retrospectively collected and analyzed clinical characteristics, histopathology, management, and follow-up data from 4 patients with conjunctival SCC complicated by intraocular invasion. We reviewed the literature and summarized cases of intraocular invasion by conjunctival SCC reported over the last 30 years.
CASE PRESENTATIONS
Two patients presented with intraocular invasion by conjunctival SCC at diagnosis. The two others developed intraocular invasion as recurrence of conjunctival SCC, previously treated with excisional biopsy and adjuvant radiotherapy. All 4 cases had a previous history of conjunctival surgery, but no history of intraocular surgery. Three patients were managed with modified enucleation, including one that required adjuvant orbital radiotherapy. One patient required orbital exenteration. Histopathology analysis showed a well-differentiated conjunctival SCC in all cases. None developed distant localization after at least 2.5-year follow-up.
DISCUSSION/CONCLUSION
Intraocular invasion is a rare complication of conjunctival SCC. Appropriate treatment in a tertiary center and long-term follow-up are highly recommended.
PubMed: 38751497
DOI: 10.1159/000531983 -
The American Journal of Medicine May 2024Well-being and cognitive function had not previously been compared between people with long COVID and people with myalgic encephalomyelitis/chronic fatigue syndrome...
BACKGROUND
Well-being and cognitive function had not previously been compared between people with long COVID and people with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS). Therefore, this study examined well-being and cognitive function in people with long COVID (∼16 months illness duration; n = 17) and ME/CFS (∼16 years illness duration; n = 24), versus age-matched healthy controls (n = 16).
METHODS
Well-being was examined using several questionnaires, namely the Health Visual Analogue Scale (VAS), Fatigue Severity Scale (FSS), post-exertional malaise (PEM), Pittsburgh Sleep Quality Index (PSQI), European Quality of Life-5 Domains (EQ-5D), MRC Dyspnoea, Self-Efficacy (SELTC), The Edinburgh Neurosymptoms Questionnaire (ENS), General Anxiety Disorder 7 (GAD-7) and Patient Health Questionnaire 9 (PHQ-9). Cognitive function was examined using Single Digit Modalities Test (SDMT), Stroop test and Trails A and B. These were delivered via a mobile application (app) built specifically for this remote data collection.
RESULTS
The main findings of the present investigation were that people with ME/CFS and people with long COVID were generally comparable on all well-being and cognitive function measures, but self-reported worse values for pain, fatigue, post-exertional malaise, sleep quality, general well-being in relation to mobility, usual activities, self-care, breathlessness, neurological symptoms, self-efficacy and other well-being such as anxiety and depression, compared to controls. There was no effect of group for cognitive function measures.
CONCLUSIONS
These data suggest that both people with long COVID and people with ME/CFS have similar impairment on well-being measures examined herein. Therefore, interventions that target well-being of people with ME/CFS and long COVID are required.
PubMed: 38750713
DOI: 10.1016/j.amjmed.2024.04.041 -
BioRxiv : the Preprint Server For... May 2024More than 65 million individuals worldwide are estimated to have Long COVID (LC), a complex multisystemic condition, wherein patients of all ages report fatigue,...
More than 65 million individuals worldwide are estimated to have Long COVID (LC), a complex multisystemic condition, wherein patients of all ages report fatigue, post-exertional malaise, and other symptoms resembling myalgic encephalomyelitis / chronic fatigue syndrome (ME/CFS). With no current treatments or reliable diagnostic markers, there is an urgent need to define the molecular underpinnings of these conditions. By studying bioenergetic characteristics of peripheral blood lymphocytes in over 16 healthy controls, 15 ME/CFS, and 15 LC, we find both ME/CFS and LC donors exhibit signs of elevated oxidative stress, relative to healthy controls, especially in the memory subset. Using a combination of flow cytometry, bulk RNA-seq analysis, mass spectrometry, and systems chemistry analysis, we also observed aberrations in ROS clearance pathways including elevated glutathione levels, decreases in mitochondrial superoxide dismutase levels, and glutathione peroxidase 4 mediated lipid oxidative damage. Critically, these changes in redox pathways show striking sex-specific trends. While females diagnosed with ME/CFS exhibit higher total ROS and mitochondrial calcium levels, males with an ME/CFS diagnosis have normal ROS levels, but larger changes in lipid oxidative damage. Further analyses show that higher ROS levels correlates with hyperproliferation of T cells in females, consistent with the known role of elevated ROS levels in the initiation of proliferation. This hyperproliferation of T cells can be attenuated by metformin, suggesting this FDA-approved drug as a possible treatment, as also suggested by a recent clinical study of LC patients. Thus, we report that both ME/CFS and LC are mechanistically related and could be diagnosed with quantitative blood cell measurements. We also suggest that effective, patient tailored drugs might be discovered using standard lymphocyte stimulation assays.
PubMed: 38746454
DOI: 10.1101/2024.05.04.592477 -
Global Cardiology Science & Practice Mar 2024Kounis syndrome, an allergic hypersensitivity coronary disorder, is a rare but potentially life-threatening condition triggered by various allergens, including...
Kounis syndrome, an allergic hypersensitivity coronary disorder, is a rare but potentially life-threatening condition triggered by various allergens, including medications. We present the case of a 41-year-old male with no prior cardiac history, who developed Kounis syndrome following vancomycin administration for suspected cellulitis. The patient initially presented with rash, fever, and malaise, which progressed to chest discomfort associated with diaphoresis and elevated troponin levels. Diagnostic evaluations, including electrocardiographic changes and coronary angiography, confirmed a diagnosis of type I Kounis syndrome. This case adds to the limited literature on vancomycin-induced Kounis syndrome, and underscores the importance of considering this diagnosis in patients with myocardial damage following exposure to potential allergens.
PubMed: 38746070
DOI: 10.21542/gcsp.2024.14 -
Wiener Klinische Wochenschrift Aug 2024Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a severe, chronic multisystemic disease which, depending on its severity, can lead to considerable...
[Interdisciplinary, collaborative D-A-CH (Germany, Austria and Switzerland) consensus statement concerning the diagnostic and treatment of myalgic encephalomyelitis/chronic fatigue syndrome].
Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a severe, chronic multisystemic disease which, depending on its severity, can lead to considerable physical and cognitive impairment, loss of ability to work and the need for nursing care including artificial nutrition and, in very severe cases, even death.The aim of this D-A-CH (Germany, Austria, Switzerland) consensus statement is 1) to summarize the current state of knowledge on ME/CFS, 2) to highlight the Canadian Consensus Criteria (CCC) as clinical criteria for diagnostics with a focus on the leading symptom post-exertional malaise (PEM) and 3) to provide an overview of current options and possible future developments, particularly with regard to diagnostics and therapy. The D-A-CH consensus statement is intended to support physicians, therapists and valuer in diagnosing patients with suspected ME/CFS by means of adequate anamnesis and clinical-physical examinations as well as the recommended clinical CCC, using the questionnaires and other examination methods presented. The overview of the two pillars of therapy for ME/CFS, pacing and symptom-relieving therapy options, is intended not only to provide orientation for physicians and therapists, but also to support decision-makers from healthcare policy and insurance companies in determining which therapy options should already be reimbursable by them at this point in time for the indication ME/CFS.
Topics: Fatigue Syndrome, Chronic; Humans; Austria; Germany; Switzerland; Intersectoral Collaboration; Practice Guidelines as Topic; Patient Care Team
PubMed: 38743348
DOI: 10.1007/s00508-024-02372-y -
Radiology Case Reports Aug 2024Reversal of blood flow has only been reported in the left internal jugular vein following interventions such as central venous catheter, dialysis shunt placement, or...
Reversal of blood flow has only been reported in the left internal jugular vein following interventions such as central venous catheter, dialysis shunt placement, or external compression from a tumor. We describe a rare case of chronic headache and hearing loss due to flow reversal in the left internal jugular vein and compensatory massive dilation of the right internal jugular vein. Flow reversal was caused by a prominent brachiocephalic trunk with subseqent compression of the vena brachiocephalica sinistra. Vascular anomalies and associated venous bypass circulation may be considered as a rare cause of non-specific malaise. Restoration of the physiological direction of blood flow should be discussed on an interdisciplinary basis given the unpredictable haemodynamic consequences.
PubMed: 38737176
DOI: 10.1016/j.radcr.2024.04.032 -
Journal of Family Medicine and Primary... Mar 2024Vaccination has been pivotal in eradicating numerous infectious diseases. Nonetheless, concerns about the safety and side effects of the COVID-19 vaccine persist. This...
BACKGROUND
Vaccination has been pivotal in eradicating numerous infectious diseases. Nonetheless, concerns about the safety and side effects of the COVID-19 vaccine persist. This study aimed to gauge the perceptions and experiences of the Indian population concerning COVID-19 vaccination.
METHODS
This study was a cross-sectional survey of 313 participants aged 18 and above from diverse regions in India. Data was sourced using an electronic questionnaire disseminated via Google Forms. The survey evaluated demographics, vaccine awareness, attitudes, and side effects post-vaccination with Covishield and Covaxin.
RESULTS
22.6% of participants exhibited vaccine hesitancy; however, 78.3% believed the advantages superseded the risks. Most participants (81.5%) were aware of vaccine side effects. Most of the Indian respondents (97.1%) accepted the COVID-19 vaccine. Post-vaccination, 27.9% experienced adverse effects such as fever, headache, malaise, dizziness, and pain at the local site. Only 1.3% necessitated hospitalization.
CONCLUSION
Our study underscores the dichotomy between vaccine apprehensions and real-world experiences. Although concerns surrounding vaccine safety were prevalent, the majority of the Indian respondents (97.1%) accepted the COVID-19 vaccine, with most experiencing only transient, mild side effects. While 22.6% initially exhibited hesitancy, primarily due to misinformation, the actual experience post-vaccination was largely positive. To further address hesitancy, streamlined vaccine awareness campaigns emphasizing the safety and efficacy of vaccination are essential.
PubMed: 38736779
DOI: 10.4103/jfmpc.jfmpc_1668_23