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1.
Cureus ; 16(8): e66366, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-39246934

RESUMEN

Background Rheumatoid arthritis and psoriatic arthritis patients have dysregulated immune system parameters that may increase infection risk at baseline. In addition, treatment of these conditions with immunosuppressive medications may lead to the development of secondary immunodeficiency (SID). Our objective was to assess SID in a cohort on immunosuppressive medications. We hypothesized that SID is clinically detectable by assessing immune parameters and polysaccharide and protein-based vaccination responses. Methodology A prospective cohort study of 42 subjects on immunosuppressive medications was assessed. Analysis included immunoglobulin levels, lymphocyte subsets, and two-step response to diphtheria, tetanus, and 23-valent Streptococcus pneumoniae vaccinations. Exclusions included primary immunodeficiency, malignancy, pregnancy, neutropenia, immunoglobulin replacement, prior B-cell-depleting medication or chemotherapy, use of non-immunosuppressive medication, or recent use of glucocorticoids. Suboptimal vaccine response was defined as an abnormal response based on standard criteria for each vaccine. Results Low IgM levels (below 50 mg/dL) occurred in seven (17%) subjects and IgG (below 650 mg/dL) in three (7%) subjects. Impaired lymphocyte subsets were uncommon. In total, 33 (78%) subjects completed the two-step vaccination assessment. Overall, 29 of 33 (88%) subjects demonstrated suboptimal response to pneumococcal vaccination, 10 (30%) demonstrated suboptimal response to diphtheria, and four (12%) to tetanus. Two (6%) subjects demonstrated suboptimal response to all vaccinations. Finally, 31 (94%) subjects demonstrated suboptimal response to at least one vaccination. Conclusions SID may develop, is clinically detectable, and most notably demonstrated in suboptimal responses to polysaccharide vaccinations, especially against S. pneumoniae.

2.
BMJ Case Rep ; 17(6)2024 Jun 18.
Artículo en Inglés | MEDLINE | ID: mdl-38890107

RESUMEN

Hypertrophic discoid lupus erythematosus is a rare variant of chronic cutaneous lupus erythematosus and is often challenging to treat. A male in his early 60s presented with diffuse erythematous, crusty, pruritic plaques on his upper and lower extremities, face, upper back, dorsal aspect of the hands and chest. He also described prolonged morning stiffness, swelling of his fingers and wrists, oral sores and Raynaud's phenomenon. He was positive for antinuclear antibody and anti-SSA antibody and had low C3 and C4 proteins. The skin biopsy was consistent with hypertrophic discoid lupus erythematosus. He was diagnosed with systemic lupus erythematosus. Skin lesions were refractory to treatment with topical corticosteroids, topical acitretin, hydroxychloroquine, azathioprine or mycophenolate. Anifrolumab infusions were initiated with a near-complete resolution of cutaneous symptoms within 3 months.


Asunto(s)
Lupus Eritematoso Discoide , Humanos , Masculino , Lupus Eritematoso Discoide/tratamiento farmacológico , Persona de Mediana Edad , Resultado del Tratamiento , Anticuerpos Monoclonales Humanizados/uso terapéutico , Anticuerpos Monoclonales/uso terapéutico , Anticuerpos Monoclonales/administración & dosificación
3.
Eur Heart J ; 45(17): 1524-1536, 2024 May 07.
Artículo en Inglés | MEDLINE | ID: mdl-38427130

RESUMEN

BACKGROUND AND AIMS: Persons with rheumatoid arthritis (RA) have an increased risk of obstetric-associated complications, as well as long-term cardiovascular (CV) risk. Hence, the aim was to evaluate the association of RA with acute CV complications during delivery admissions. METHODS: Data from the National Inpatient Sample (2004-2019) were queried utilizing ICD-9 or ICD-10 codes to identify delivery hospitalizations and a diagnosis of RA. RESULTS: A total of 12 789 722 delivery hospitalizations were identified, of which 0.1% were among persons with RA (n = 11 979). Individuals with RA, vs. those without, were older (median 31 vs. 28 years, P < .01) and had a higher prevalence of chronic hypertension, chronic diabetes, gestational diabetes mellitus, obesity, and dyslipidaemia (P < .01). After adjustment for age, race/ethnicity, comorbidities, insurance, and income, RA remained an independent risk factor for peripartum CV complications including preeclampsia [adjusted odds ratio (aOR) 1.37 (95% confidence interval 1.27-1.47)], peripartum cardiomyopathy [aOR 2.10 (1.11-3.99)], and arrhythmias [aOR 2.00 (1.68-2.38)] compared with no RA. Likewise, the risk of acute kidney injury and venous thromboembolism was higher with RA. An overall increasing trend of obesity, gestational diabetes mellitus, and acute CV complications was also observed among individuals with RA from 2004-2019. For resource utilization, length of stay and cost of hospitalization were higher for deliveries among persons with RA. CONCLUSIONS: Pregnant persons with RA had higher risk of preeclampsia, peripartum cardiomyopathy, arrhythmias, acute kidney injury, and venous thromboembolism during delivery hospitalizations. Furthermore, cardiometabolic risk factors among pregnant individuals with RA rose over this 15-year period.


Asunto(s)
Artritis Reumatoide , Humanos , Femenino , Embarazo , Estados Unidos/epidemiología , Adulto , Artritis Reumatoide/epidemiología , Artritis Reumatoide/complicaciones , Hospitalización/estadística & datos numéricos , Complicaciones Cardiovasculares del Embarazo/epidemiología , Enfermedades Cardiovasculares/epidemiología , Factores de Riesgo , Parto Obstétrico/efectos adversos , Parto Obstétrico/estadística & datos numéricos , Complicaciones del Embarazo/epidemiología
4.
Cureus ; 15(6): e40552, 2023 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-37465805

RESUMEN

The use of statins may be associated with muscle-related side effects ranging from myalgia to rhabdomyolysis. A rare adverse effect is statin-induced anti-hydroxy-3-methyl-glutaryl-coenzyme A reductase (anti-HMGCR) necrotizing myositis, which may develop after exposure to statins due to autoantibodies against HMG-Co-A reductase. We present the case of a 76-year-old male who developed progressive muscle weakness three years after exposure to statins. He had significantly elevated creatine kinase (CK) levels, despite the discontinuation of statins three years prior. He complained of generalized muscle weakness, and examination revealed reduced strength, especially in the proximal musculature. MRI revealed inflammatory myositis of the medial and posterior compartments of bilateral thighs. Autoimmune workup was positive for anti-HMG-CoA reductase antibodies. Muscle biopsy showed endomysial inflammation with fibrosis and fat replacement, suggesting chronic but active myositis. A diagnosis of chronic anti-HMGCR necrotizing myositis was made. The patient was started on oral prednisone and methotrexate with improvement in symptoms and CK levels. This case highlights a chronic form of a rare cause of myositis that may be a challenge to diagnose given the remote exposure to statins.

6.
ACR Open Rheumatol ; 5(1): 3, 2023 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-36268541
7.
J Clin Rheumatol ; 29(2): 109-111, 2023 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-36126256

RESUMEN

BACKGROUND/OBJECTIVE: Although vaccination is the primary strategy against severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), rheumatologic patients on B-cell depleting agent rituximab may have a suboptimal response. Tixagevimab and cilgavimab (Evusheld) could be administered under Food and Drug Administration emergency use authorization as pre-exposure prophylaxis. METHODS: A cohort study of rheumatologic patients on rituximab therapy who received Evusheld was followed longitudinally. Adverse events were monitored. RESULTS: Forty-three patients received Evusheld, with diagnoses including rheumatoid arthritis, ANCA vasculitis, immune-mediated myositis, Sjögren disease, and systemic lupus erythematosus. Average time to follow-up was 100 ± 33 days. One patient experienced symptomatic infection with SARS-CoV-2 confirmed by home antigen test twice. A total of 97.8% of patients during follow-up did not contract acute SARS-CoV-2 infection. At the same time, 32,074 new local cases were reported with a local cumulative SARS-CoV-2 incidence rate of 4.32%. Adverse events included myalgia, flu-like symptoms, fevers, injection site pain, or headache. No serious adverse events, anaphylaxis, or cardiac events occurred. CONCLUSIONS: Evusheld demonstrated effectiveness in preventing symptomatic SARS-CoV-2 infection in a real-world cohort of rheumatologic patients on rituximab therapy. Administration of Evusheld may be considered as part of a multilayered approach to risk mitigation in this high-risk population as pre-exposure prophylaxis.


Asunto(s)
Artritis Reumatoide , COVID-19 , Humanos , Rituximab , Estudios de Cohortes , SARS-CoV-2
8.
J Hematol ; 11(6): 210-215, 2022 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-36632574

RESUMEN

Background: Immunocompromised individuals with hematological malignancy have increased risk for poor outcomes and death from severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). This special population may mount a suboptimal response to vaccination. We assessed the effectiveness of tixagevimab and cilgavimab (Evusheld), a monoclonal antibody combination against SARS-CoV-2, in conjunction with standard preventative measures, at preventing symptomatic incident infection. Methods: Patients aged 18 years and older with hematological malignancy consented to receive Evusheld. Patients were followed longitudinally for development of symptomatic incident SARS-CoV-2 infections. Adverse events were monitored. Results: Two hundred and three patients (94 female) with hematological malignancies and mean age 72 ± 10 years were included. Of the patients, 99.5% had received at least one mRNA vaccination against SARS-CoV-2. Average time of follow-up was 151 ± 50 days. Nineteen patients (9.3%) developed incident symptomatic SARS-CoV-2 infection, with only one (0.5%) requiring hospitalization. During the same follow-up period, local incident rate of infection was 84,123 cases (11.3% of population). Of those, 3,386 cases (4%) of SARS-CoV-2 required hospital admission. The incidence rate ratio was 0.79. No serious adverse events occurred following administration of Evusheld. Conclusion: Patients with hematological malignancy who received Evusheld infrequently developed symptomatic infections or require hospitalization. The high-risk cohort incidence was at least as comparable to the average risk general population. Evusheld appears effective and is well tolerated, and may be administered in conjunction with vaccination and standard prevention measures, at decreasing incident SARS-Co-V2 cases in this high-risk population.

10.
Ann Rheum Dis ; 80(12): 1522-1529, 2021 12.
Artículo en Inglés | MEDLINE | ID: mdl-34215644

RESUMEN

OBJECTIVES: Rheumatoid arthritis (RA), along with glucocorticoid use, is associated with cardiovascular disease. Cardiovascular safety of glucocorticoids in RA is controversial and may be related to dose and duration of use. We determined if initiating glucocorticoids in steroid-naive RA patients would increase cardiovascular event (CVE) risk in a dose and duration-dependent manner over short-term intervals. METHODS: Patients enrolled in CorEvitas (formerly Corrona) RA registry. Cox proportional-hazards models estimated adjusted HRs (aHR) for incident CVE in patients who initiated glucocorticoid treatment, adjusting for RA duration, traditional cardiovascular risk factors and time-varying covariates: Clinical Disease activity Index, disease-modifying antirheumatic drugs use and prednisone-equivalent use. Glucocorticoid use assessed current daily dose, cumulative dose and duration of use over rolling intervals of preceding 6 months and 1 year. RESULTS: 19 902 patients met criteria. 1106 CVE occurred (1.66/100 person-years). Increased aHR occurred at current doses of ≥5-9 mg 1.56 (1.18-2.06) and ≥10 mg 1.91 (1.31-2.79), without increased risk at 0-4 mg 1.04 (0.55-1.59). Cumulative dose over preceding 6 months showed increased aHR at 751-1100 mg 1.43 (1.04-1.98) and >1100 mg 2.05 (1.42-2.94), without increased risk at lower doses; duration of use over preceding 6 months exhibited increased aHR for >81 days of use 1.54 (1.08-2.32), without increased risk at shorter durations. One-year analyses were consistent. CONCLUSIONS: Over preceding 6-month and 1-year intervals, initiating glucocorticoids in steroid-naïve RA patients is associated with increased risk of CVE at daily doses ≥5 mg and increased cumulative dose and duration of use. No association with risk for CVE was found with daily prednisone of ≤4 mg or shorter cumulative doses and durations.


Asunto(s)
Artritis Reumatoide/tratamiento farmacológico , Enfermedades Cardiovasculares/epidemiología , Duración de la Terapia , Glucocorticoides/uso terapéutico , Prednisona/uso terapéutico , Síndrome Coronario Agudo/epidemiología , Adulto , Anciano , Angina Inestable/epidemiología , Antirreumáticos/uso terapéutico , Arritmias Cardíacas/epidemiología , Artritis Reumatoide/fisiopatología , Enfermedades Cardiovasculares/mortalidad , Relación Dosis-Respuesta a Droga , Femenino , Factores de Riesgo de Enfermedad Cardiaca , Insuficiencia Cardíaca/epidemiología , Hospitalización/estadística & datos numéricos , Humanos , Hipertensión/epidemiología , Masculino , Persona de Mediana Edad , Infarto del Miocardio/epidemiología , Revascularización Miocárdica/estadística & datos numéricos , Enfermedad Arterial Periférica/epidemiología , Modelos de Riesgos Proporcionales , Embolia Pulmonar/epidemiología , Accidente Cerebrovascular/epidemiología , Tromboembolia/epidemiología , Trombosis de la Vena/epidemiología
11.
J Am Acad Dermatol ; 84(5): 1254-1268, 2021 05.
Artículo en Inglés | MEDLINE | ID: mdl-33422626

RESUMEN

OBJECTIVE: To update guidance regarding the management of psoriatic disease during the COVID-19 pandemic. STUDY DESIGN: The task force (TF) includes 18 physician voting members with expertise in dermatology, rheumatology, epidemiology, infectious diseases, and critical care. The TF was supplemented by nonvoting members, which included fellows and National Psoriasis Foundation staff. Clinical questions relevant to the psoriatic disease community were informed by inquiries received by the National Psoriasis Foundation. A Delphi process was conducted. RESULTS: The TF updated evidence for the original 22 statements and added 5 new recommendations. The average of the votes was within the category of agreement for all statements, 13 with high consensus and 14 with moderate consensus. LIMITATIONS: The evidence behind many guidance statements is variable in quality and/or quantity. CONCLUSIONS: These statements provide guidance for the treatment of patients with psoriatic disease on topics including how the disease and its treatments affect COVID-19 risk, how medical care can be optimized during the pandemic, what patients should do to lower their risk of getting infected with severe acute respiratory syndrome coronavirus 2 (including novel vaccination), and what they should do if they develop COVID-19. The guidance is a living document that is continuously updated by the TF as data emerge.


Asunto(s)
Vacunas contra la COVID-19 , COVID-19/prevención & control , Psoriasis/tratamiento farmacológico , Productos Biológicos/uso terapéutico , COVID-19/complicaciones , COVID-19/epidemiología , Toma de Decisiones Conjunta , Medicina Basada en la Evidencia , Humanos , Factores Inmunológicos/uso terapéutico , Pandemias , Psoriasis/complicaciones , Factores de Riesgo , Estados Unidos/epidemiología , Tratamiento Farmacológico de COVID-19
12.
J Am Acad Dermatol ; 83(6): 1704-1716, 2020 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-32891785

RESUMEN

OBJECTIVE: To provide guidance about management of psoriatic disease during the coronavirus disease 2019 (COVID-19) pandemic. STUDY DESIGN: A task force (TF) of 18 physician voting members with expertise in dermatology, rheumatology, epidemiology, infectious diseases, and critical care was convened. The TF was supplemented by nonvoting members, which included fellows and National Psoriasis Foundation (NPF) staff. Clinical questions relevant to the psoriatic disease community were informed by questions received by the NPF. A Delphi process was conducted. RESULTS: The TF approved 22 guidance statements. The average of the votes was within the category of agreement for all statements. All guidance statements proposed were recommended, 9 with high consensus and 13 with moderate consensus. LIMITATIONS: The evidence behind many guidance statements is limited in quality. CONCLUSION: These statements provide guidance for the management of patients with psoriatic disease on topics ranging from how the disease and its treatments impact COVID-19 risk and outcome, how medical care can be optimized during the pandemic, what patients should do to lower their risk of getting infected with severe acute respiratory syndrome coronavirus 2 and what they should do if they develop COVID-19. The guidance is intended to be a living document that will be updated by the TF as data emerge.


Asunto(s)
Infecciones por Coronavirus/epidemiología , Inmunosupresores/efectos adversos , Organizaciones sin Fines de Lucro/normas , Neumonía Viral/epidemiología , Psoriasis/tratamiento farmacológico , Comités Consultivos/normas , Betacoronavirus/inmunología , Betacoronavirus/patogenicidad , COVID-19 , Consenso , Infecciones por Coronavirus/inmunología , Infecciones por Coronavirus/prevención & control , Infecciones por Coronavirus/virología , Cuidados Críticos/normas , Técnica Delphi , Dermatología/normas , Epidemiología/normas , Humanos , Infectología/normas , Organizaciones sin Fines de Lucro/organización & administración , Pandemias/prevención & control , Neumonía Viral/inmunología , Neumonía Viral/prevención & control , Neumonía Viral/virología , Psoriasis/complicaciones , Psoriasis/inmunología , Reumatología/normas , SARS-CoV-2 , Estados Unidos/epidemiología
13.
BMJ Case Rep ; 12(6)2019 Jun 05.
Artículo en Inglés | MEDLINE | ID: mdl-31171533

RESUMEN

Thyrotoxicosis rarely presents as cholestatic hyperbilirubinaemia, and severe bilirubin elevation may lead to bile cast nephropathy. We present a case of a young woman with newly diagnosed Graves' disease with thyrotoxicosis who developed severe hyperbilirubinaemia and bile cast nephropathy. Serial plasma exchange and temporary haemodialysis led to full renal recovery. After treatment of her thyrotoxicosis with antithyroid medication and radioactive iodine ablation, her bilirubin normalised.


Asunto(s)
Enfermedad de Graves/radioterapia , Hiperbilirrubinemia/complicaciones , Ictericia Obstructiva/etiología , Tirotoxicosis/complicaciones , Adulto , Bilis , Femenino , Enfermedad de Graves/tratamiento farmacológico , Humanos , Radioisótopos de Yodo/uso terapéutico , Enfermedades Renales/etiología , Enfermedades Renales/terapia , Diálisis Renal/métodos , Resultado del Tratamiento
14.
BMJ Case Rep ; 20182018 Aug 14.
Artículo en Inglés | MEDLINE | ID: mdl-30108118

RESUMEN

A previously healthy 21-year-old man presented with an 8-month history of weight loss, lethargy and dysuria unresponsive to empiric antibiotics and paraurethral drainage of a prostatic abscess. Urinalysis showed pyuria, but cultures failed to grow any organisms. Additionally, he developed new onset sensorineural hearing loss. CT of the chest showed two right-sided cavitary lesions. CT of the abdomen and pelvis demonstrated a prostatic abscess. A prostate biopsy demonstrated necrotising granulomatous prostatitis. A lung biopsy showed necrotising granulomatous inflammation. He was diagnosed with granulomatosis with polyangiitis (GPA). He was successfully treated with rituximab and prednisone. At 6-month follow-up, he continued to be in remission with resolution of his symptoms. This case demonstrates a rare presentation of prostatitis as the presenting symptom of GPA. As far as we know, this case is the first documented report of rituximab and prednisone as successful therapy for prostatitis secondary to GPA.


Asunto(s)
Granulomatosis con Poliangitis/diagnóstico , Prostatitis/diagnóstico , Antiinflamatorios/administración & dosificación , Antiinflamatorios/uso terapéutico , Diagnóstico Diferencial , Quimioterapia Combinada , Granulomatosis con Poliangitis/complicaciones , Granulomatosis con Poliangitis/diagnóstico por imagen , Granulomatosis con Poliangitis/tratamiento farmacológico , Pérdida Auditiva/etiología , Humanos , Inmunosupresores/administración & dosificación , Inmunosupresores/uso terapéutico , Masculino , Prednisona/administración & dosificación , Prednisona/uso terapéutico , Prostatitis/complicaciones , Prostatitis/diagnóstico por imagen , Prostatitis/tratamiento farmacológico , Rituximab/administración & dosificación , Rituximab/uso terapéutico , Pérdida de Peso , Adulto Joven
15.
BMJ Case Rep ; 20182018 Aug 16.
Artículo en Inglés | MEDLINE | ID: mdl-30115716

RESUMEN

A 61-year-old Caucasian man presented with a fever of unknown origin, a transient erythematous rash on his right upper extremity and chest pressure after being treated for erythema migrans (Lyme disease). Echocardiogram demonstrated a large pericardial effusion with tamponade. He underwent pericardiostomy with tube placement. Workup for infectious and malignant etiologies was negative. Histology of the pericardium showed acute on chronic fibrinous haemorrhagic pericarditis. The patient met criteria for adult-onset Still's disease. Symptoms resolved following treatment with methylprednisolone and anakinra. We believe this is the first case of adult-onset Still's disease precipitated by acute Lyme disease.


Asunto(s)
Enfermedad de Lyme/complicaciones , Enfermedad de Still del Adulto/etiología , Edad de Inicio , Antirreumáticos/administración & dosificación , Taponamiento Cardíaco/etiología , Glucocorticoides/administración & dosificación , Humanos , Proteína Antagonista del Receptor de Interleucina 1/administración & dosificación , Enfermedad de Lyme/diagnóstico , Enfermedad de Lyme/inmunología , Masculino , Metilprednisolona/administración & dosificación , Persona de Mediana Edad , Derrame Pericárdico/etiología , Enfermedad de Still del Adulto/diagnóstico , Enfermedad de Still del Adulto/tratamiento farmacológico
16.
BMJ Case Rep ; 20182018 Aug 16.
Artículo en Inglés | MEDLINE | ID: mdl-30115723

RESUMEN

Behcet's disease is a multisystemic vasculitis. Arterial involvement in the form of acute dissection is rare. A 42-year-old Lebanese man with Behcet's disease presented with severe abdominal pain. On exam, blood pressure was 162/104 mm Hg, and he exhibited epigastric tenderness. CT angiogram demonstrated an acute dissection of the coeliac artery trunk, common hepatic artery and proper hepatic arteries, with asymmetric thickening of the proximal left subclavian artery and circumferential thickening of the abdominal infrarenal aorta suggestive of vasculitis. Treatment included intravenous clevidipine, nitroprusside and methylprednisolone, which transitioned to oral metoprolol, amlodipine and prednisone. He responded well. Arterial dissections have been described with Behcet's. We report a coeliac artery aneurysm in association with a flare of Behcet's disease. Arterial wall inflammation combined with the sheering forces of hypertension likely predisposes to arterial dissection.


Asunto(s)
Disección Aórtica/etiología , Síndrome de Behçet/complicaciones , Arteria Celíaca , Dolor Abdominal/etiología , Adulto , Síndrome de Behçet/tratamiento farmacológico , Arteria Celíaca/diagnóstico por imagen , Angiografía por Tomografía Computarizada , Humanos , Masculino
17.
BMJ Case Rep ; 20172017 Oct 04.
Artículo en Inglés | MEDLINE | ID: mdl-28978596

RESUMEN

Hemophagocytic lymphohistiocytosis (HLH) is a serious life-threatening disease if not recognised early. In patients with HIV/AIDS, this association has been reported following acute opportunistic infections, including histoplasmosis. However, optimal treatment is not known. We describe a male aged 46 years with AIDS who developed HLH following acute disseminated histoplasmosis. Presenting symptoms included fever, hepatosplenomegaly and pancytopenia. Bone marrow biopsy confirmed HLH. Initially, he was refractory to the treatment with amphotericin B, antiretroviral therapy and intravenous immunoglobulin (IVIG). Anakinra, an interleukin-1 receptor antagonist, and dexamethasone were initiated. He improved clinically, did not exhibit any harmful effects and ultimately was discharged from the hospital. This, we believe, is the first reported treatment of HLH with anakinra in a patient with AIDS and acute disseminated histoplasmosis.


Asunto(s)
Infecciones Oportunistas Relacionadas con el SIDA/diagnóstico , Infecciones por VIH , Histoplasmosis/diagnóstico , Linfohistiocitosis Hemofagocítica/diagnóstico , Infecciones Oportunistas Relacionadas con el SIDA/diagnóstico por imagen , Infecciones Oportunistas Relacionadas con el SIDA/tratamiento farmacológico , Antiinflamatorios/administración & dosificación , Antiinflamatorios/uso terapéutico , Dexametasona/administración & dosificación , Dexametasona/uso terapéutico , Diagnóstico Diferencial , Histoplasmosis/diagnóstico por imagen , Histoplasmosis/tratamiento farmacológico , Humanos , Proteína Antagonista del Receptor de Interleucina 1/administración & dosificación , Proteína Antagonista del Receptor de Interleucina 1/uso terapéutico , Linfohistiocitosis Hemofagocítica/diagnóstico por imagen , Linfohistiocitosis Hemofagocítica/tratamiento farmacológico , Masculino , Persona de Mediana Edad
18.
Clin Sci (Lond) ; 126(4): 289-96, 2014 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-23978222

RESUMEN

POTS (postural tachycardia syndrome) is a chronic form of OI (orthostatic intolerance). Neuropathic POTS is characterized by decreased adrenergic vasoconstriction, whereas hyperadrenergic POTS exhibits increased adrenergic vasoconstriction. We hypothesized that midodrine, an α1-adrenergic receptor agonist, would increase CVR (calf vascular resistance), decrease C(v) (calf venous capacitance) and decrease orthostatic tachycardia in neuropathic POTS, but not alter haemodynamics in hyperadrenergic POTS. A total of 20 POTS patients (12 neuropathic and eight hyperadrenergic), ages 12-20 years, participated in this randomized placebo-controlled double-blind cross-over study. Of these subjects, 15 were female. POTS subjects received 2 weeks of treatment with midodrine or placebo, with increased dosing from 2.5 to 10 mg three times daily. Following a 7-day drug-washout period, subjects received the cross-over treatment. HR (heart rate), MAP (mean arterial pressure), Q(calf) (calf blood flow) and CVR were measured supine and during 35° HUT (head-up tilt). C(v) was measured supine. In neuropathic POTS, midodrine decreased supine HR, Q(calf) and C(v), while increasing MAP and CVR compared with placebo. During HUT, in neuropathic POTS, midodrine decreased HR, Q(calf) and C(v), while increasing MAP and CVR. In hyperadrenergic POTS, placebo and midodrine both decreased upright HR and increased supine CVR. Placebo also increased supine C(v), compared with midodrine in hyperadrenergic POTS. Therefore midodrine improved postural tachycardia in neuropathic POTS by increasing CVR and decreasing Q(calf) and C(v), whereas these effects were not seen in hyperadrenergic POTS patients who experienced a placebo effect. This suggests that midodrine is probably an effective treatment for neuropathic POTS, but not for hyperadrenergic POTS.


Asunto(s)
Midodrina/uso terapéutico , Enfermedades del Sistema Nervioso Periférico/tratamiento farmacológico , Síndrome de Taquicardia Postural Ortostática/tratamiento farmacológico , Vasoconstricción/efectos de los fármacos , Adolescente , Adulto , Presión Sanguínea/fisiología , Niño , Estudios Cruzados , Método Doble Ciego , Femenino , Frecuencia Cardíaca/fisiología , Humanos , Masculino , Midodrina/administración & dosificación , Efecto Placebo , Taquicardia/tratamiento farmacológico , Resultado del Tratamiento , Adulto Joven
19.
Front Physiol ; 4: 63, 2013.
Artículo en Inglés | MEDLINE | ID: mdl-23576989

RESUMEN

Chronic Fatigue Syndrome (CFS) is defined as greater than 6 months of persistent fatigue that is experienced physically and cognitively. The cognitive symptoms are generally thought to be a mild cognitive impairment, but individuals with CFS subjectively describe them as "brain fog." The impairment is not fully understood and often is described as slow thinking, difficulty focusing, confusion, lack of concentration, forgetfulness, or a haziness in thought processes. Causes of "brain fog" and mild cognitive impairment have been investigated. Possible physiological correlates may be due to the effects of chronic orthostatic intolerance (OI) in the form of the Postural Tachycardia Syndrome (POTS) and decreases in cerebral blood flow (CBF). In addition, fMRI studies suggest that individuals with CFS may require increased cortical and subcortical brain activation to complete difficult mental tasks. Furthermore, neurocognitive testing in CFS has demonstrated deficits in speed and efficiency of information processing, attention, concentration, and working memory. The cognitive impairments are then perceived as an exaggerated mental fatigue. As a whole, this is experienced by those with CFS as "brain fog" and may be viewed as the interaction of physiological, cognitive, and perceptual factors. Thus, the cognitive symptoms of CFS may be due to altered CBF activation and regulation that are exacerbated by a stressor, such as orthostasis or a difficult mental task, resulting in the decreased ability to readily process information, which is then perceived as fatiguing and experienced as "brain fog." Future research looks to further explore these interactions, how they produce cognitive impairments, and explain the perception of "brain fog" from a mechanistic standpoint.

20.
Pediatr Emerg Care ; 28(10): 1057-9, 2012 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-23034492

RESUMEN

Nongestational choriocarcinoma, a rare ovarian tumor, may present in young women with amenorrhea, abdominal distention, and elevated urine human chorionic gonadotropin (hCG), all of which may be mistaken for pregnancy. A 15-year-old Hispanic female, who reported no sexual activity, presented with 6 months of amenorrhea, abdominal pain, and progressive abdominal distension. Initially, suspicion of pregnancy was considered. Physical examination was significant for abdominal distension, but no uterine fundus or fetal anatomy could be palpated, and auscultation did not reveal any fetal heart sounds or bruits. Laboratory values showed elevated urine hCG, cancer antigen 125, and cancer antigen 19.9 levels but normal serum hCG level and was inconsistent with pregnancy. Computed tomographic scans revealed a large abdominal heterogeneous mass and pleural effusions. Salpingo-oophorectomy with total omentectomy and inversion appendectomy removed a 21 × 20.5 × 16.5-cm tumor. Pathological testing determined it to be a nongestational choriocarcinoma. This rare tumor is more common in the pediatric adolescent population than in adults. Surgical resection and chemotherapy often result in a positive prognosis. In female adolescent patients presenting with elevated hCG level, amenorrhea, and abdominal distention, choriocarcinoma should be considered, especially in those with no history of sexual activity or before menarche.


Asunto(s)
Amenorrea/etiología , Coriocarcinoma no Gestacional/diagnóstico , Gonadotropina Coriónica/sangre , Neoplasias Ováricas/diagnóstico , Adolescente , Amenorrea/sangre , Amenorrea/diagnóstico , Biomarcadores de Tumor/sangre , Coriocarcinoma no Gestacional/sangre , Coriocarcinoma no Gestacional/complicaciones , Diagnóstico Diferencial , Femenino , Humanos , Neoplasias Ováricas/sangre , Neoplasias Ováricas/complicaciones , Tomografía Computarizada por Rayos X
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