Acquired hemophilia A treated with rituximab in a 62-year-old female with rheumatoid arthritis: a case-based review.

Acquired hemophilia A (AHA) is a rare autoimmune disorder with unpredictable hemostasis that is caused by autoantibody formation against coagulation factor VIII. AHA can occur in the context of autoimmune inflammatory rheumatic disorders. Here we report the case of a 62-year-old female with an 11-year history of rheumatoid arthritis (RA) who presented with cutaneous and mucosal bleeding. Activated partial thromboplastin time was prolonged and not corrected by the mixing test. Factor VIII activity was decreased, and the anti-factor VIII antibody was positive. AHA associated with RA was diagnosed. The patient was treated with rituximab 500 mg weekly for 4 doses and prednisolone 10 mg/daily. The patient did not experience bleeding events after treatment, and factor VIII activity and inhibitor normalized. At the end of the article, we discuss similar cases of RA-associated AHA.

Adherence to treatment and associated factors in rheumatoid arthritis patients: a cross-sectional study from Iran.

The aim of this study is to evaluate adherence to treatment and its related risk factors among a sample of rheumatoid arthritis patients (RA) attending the rheumatology outpatient clinic of Kermanshah university of medical sciences. In this cross-sectional study, RA patients were asked to complete the Morisky questionnaire and 19-item compliance questionnaire for rheumatology (CQR). Patients were divided into two groups: adherent and non-adherent to treatment, based on the CQR questionnaire results. Demographic and clinical characteristics (age, sex, marital status, education level, economical condition, occupational status, place of residence, underlying diseases, type, and number of drugs) were compared between the two groups to investigate possible risk associations for poor adherence. 257 patients completed the questionnaires (mean age: 43.22, 80.2% female). 78.6% were married, 54.9% were housekeepers, 37.7% had tertiary education, 61.9% had moderate economic status, and 73.2% were residents of an urban area with a large population. Prednisolone was the most commonly used drug followed by non-steroidal anti-inflammatory drugs, sulfasalazine, hydroxychloroquine, and methotrexate. The mean score of the Morisky questionnaire was 5.528 (standard deviation=1.79). 105 patients (40.9%) were adherent to treatment based on the CQR questionnaire. High education level (college or university) was correlated with non-adherence to treatment [27 (25.71%) vs 70 (46.05%), p=0.004]. We concluded that the prevalence of non-adherence to treatment is 59.1% in rheumatoid arthritis patients in Kermanshah, Iran. Having a higher education level is a risk factor for poor treatment adherence. Other variables could not predict treatment adherence.

Successful treatment of COVID-19 induced neutrophilic myositis with intravenous immunoglobulin and corticosteroids: a case report.

Neutrophilic myositis (NM) is an inflammatory disorder predominantly characterized by neutrophilic infiltration in the muscles, which is suggested to be an extracutaneous manifestation of neutrophilic dermatosis (ND). NM is a rare disorder which has been occasionally reported in association with hematologic and inflammatory disorders. This case report describes a 45-year-old woman who presented with gradual muscle weakness developed after coronavirus disease 2019 (COVID-19) infection. Electromyography and nerve conduction velocity findings were compatible with inflammatory myopathy and muscle biopsy revealed neutrophilic infiltration. She was successfully treated with intravenous immunoglobulin, prednisolone 1 mg/kg/day and azathioprine 150 mg/day. In conclusion, the COVID-19 infection itself and the drugs used to treat it can cause a number of muscle disorders. Awareness of muscular involvement in COVID-19 infected patients is important for early diagnosis and appropriate treatment.

Disseminated cutaneous herpes simplex infection after COVID-19 vaccination in a rheumatoid arthritis patient: a case report and review.

Since COVID-19 vaccination started in December 2020, different side effects were reported. This case report describes the possibility of developing disseminated herpes simplex infection after COVID-19 vaccine in a patient with rheumatoid arthritis. In this case report, we describe a 63-year-old Iranian female. She was a known case of seronegative rheumatoid arthritis and presented with generalized papulo-pustular itchy and painful skin lesions which appeared about seven days after the second dose of Sinopharm BIBP COVID-19 vaccine (BIBP-CorV). A biopsy of the skin lesions revealed acantholysis, neutrophils, and enlarged keratinocytes with eosinophilic intra-nuclear inclusions. Findings were consistent with herpes simplex infection. She was successfully treated by acyclovir. Disseminated cutaneous herpes simplex infection may have been triggered by COVID-19 vaccination. Reactivation of herpes virus after COVID-19 vaccines was reported in both rheumatic patients and other individuals. Whether having an underlying autoimmune inflammatory disorder could be an additional risk factor is still unknown.

Study of prevalence and effects of insulin resistance in patients with chronic hepatitis C genotype 4.

There is strong epidemiological evidence linking hepatitis C virus (HCV) infection and diabetes. Our aim was to evaluate the prevalence of insulin resistance in Egyptian patients with chronic HCV genotype 4 infection, to assess factors associated with insulin resistance and to test the impact of insulin resistance on outcomes of treatment with pegylated interferon/ribavirin. Insulin resistance [homeostasis model assessmentinsulin resistance (HOMA-IR) score > 3.0] was detected in 31 of 100 nondiabetic patients. The relationship between elevated HOMA-IR and baseline viral load and degree of fibrosis was statistically significant (r = 0.218 and r = 0.223). Follow-up of patients with complete early virological response until the end of treatment showed a statistically significant decrease in HOMA-IR score. Out of 29 liver tissue sections examined, 14 had a low level of expression of insulin receptor type 1 by immunohistochemical studies. This study confirms that insulin resistance affects treatment outcome, and thus HOMA-IR testing before initiation of therapy may be a cost-effective tool.

Predictors of 25(OH)D half-life and plasma 25(OH)D concentration in The Gambia and the UK.

UNLABELLED: Predictors of 25(OH)D3 half-life were factors associated with vitamin D metabolism, but were different between people in The Gambia and the UK. Country was the strongest predictor of plasma 25(OH)D concentration, probably as a marker of UVB exposure. 25(OH)D3 half-life may be applied as a tool to investigate vitamin D expenditure. INTRODUCTION: The aim of this study was to investigate predictors of 25(OH)D3 half-life and plasma 25(OH)D concentration. METHODS: Plasma half-life of an oral tracer dose of deuterated-25(OH)D3 was measured in healthy men aged 24-39 years, resident in The Gambia, West Africa (n = 18) and in the UK during the winter (n = 18), countries that differ in calcium intake and vitamin D status. Plasma and urinary markers of vitamin D, calcium, phosphate and bone metabolism, nutrient intakes and anthropometry were measured. RESULTS: Normally distributed data are presented as mean (SD) and non-normal data as geometric mean (95% CI). Gambian compared to UK men had higher plasma concentrations of 25(OH)D (69 (13) vs. 29 (11) nmol/L; P < 0.0001); 1,25(OH)2D (181 (165, 197) vs. 120 (109, 132) pmol/L; P < 0.01); and parathyroid hormone (PTH) (50 (42, 60) vs. 33 (27, 39); P < 0.0001). There was no difference in 25(OH)D3 half-life (14.7 (3.5) days vs. 15.6 (2.5) days) between countries (P = 0.2). In multivariate analyses, 25(OH)D, 1,25(OH)2D, vitamin D binding protein and albumin-adjusted calcium (Caalb) explained 79% of variance in 25(OH)D3 half-life in Gambians, but no significant predictors were found in UK participants. For the countries combined, Caalb, PTH and plasma phosphate explained 39 % of half-life variability. 1,25(OH)2D, weight, PTH and country explained 81% of variability in 25(OH)D concentration; however, country alone explained 74%. CONCLUSION: Factors known to affect 25(OH)D metabolism predict 25(OH)D3 half-life, but these differed between countries. Country predicted 25(OH)D, probably as a proxy measure for UVB exposure and vitamin D supply. This study supports the use of 25(OH)D half-life to investigate vitamin D metabolism.

Prevalence of asthma among schoolchildren in Ahvaz, Islamic Republic of Iran.

The prevalence of asthma was determined in a random sample of schoolchildren in Ahvaz city, southwest Islamic Republic of Iran, based on the International Study of Asthma and Allergy in Childhood (ISAAC) protocol. The prevalence of ever wheeze and current wheeze was 11.1% and 7.4% among 1410 children aged 6-7 years (parent-reported) and 17.7% and 10.3% among 1450 children aged 13-14 years (self-reported). The prevalence of ever asthma was significantly higher among 13-14-year-olds (9.8%) than 6-7-year-olds (6.8%) but no significant difference was found between males and females in either age group. Comparisons are made with other Iranian cities and international data.

25(OH)D2 half-life is shorter than 25(OH)D3 half-life and is influenced by DBP concentration and genotype.

CONTEXT: There is uncertainty over the equivalence of vitamins D2 and D3 to maintain plasma 25-hydroxyvitamin D (25(OH)D). OBJECTIVE: The objective of the study was to compare the plasma half-lives of 25(OH)D2 and 25(OH)D3 in two distinct populations with different dietary calcium intake and 25(OH)D status. PARTICIPANTS: Healthy men (aged 24 and 39 y), resident in The Gambia (n = 18) or the United Kingdom (n = 18) participated in the study. INTERVENTIONS: The intervention included an oral tracer dose of deuterated-25(OH)D2 and deuterated-25(OH)D3 (both 40 nmol). Blood samples were collected over 33 days. MAIN OUTCOME MEASURES: 25(OH)D2 and 25(OH)D3 plasma half-lives, concentrations of 25(OH)D, and vitamin D binding protein (DBP) and DBP genotypes were measured. RESULTS: 25(OH)D2 half-life [mean (SD)] [13.9 (2.6) d] was shorter than 25(OH)D3 half-life [15.1 (3.1) d; P = .001] for countries combined, and in Gambians [12.8 (2.3) d vs 14.7 (3.5) d; P < .001], but not in the United Kingdom [15.1 (2.4) d vs 15.6 (2.5) d; P = .3]. 25(OH)D concentration was 69 (13) and 29 (11) nmol/L (P < .0001), and the DBP concentration was 259 (33) and 269 (23) mg/L (P = .4) in The Gambia and United Kingdom, respectively. Half-lives were positively associated with plasma DBP concentration for countries combined [25(OH)D2 half-life: regression coefficient (SE) 0.03 (0.01) d per 1 mg/L DBP, P = .03; 25(OH)D3 half-life: 0.04 (0.02) d, P = .02] and in Gambians [25(OH)D2 half-life: 0.04 (0.01) d; P = .02; 25(OH)D3 half-life: 0.06 (0.02) d, P = .01] but not in UK participants. The DBP concentration × country interactions were not significant. DBP Gc1f/1f homozygotes had shorter 25(OH)D2 half-lives compared with other combined genotypes (P = .007) after correction for country. CONCLUSIONS: 25(OH)D2 half-life was shorter than 25(OH)D3 half-life, and half-lives were affected by DBP concentration and genotype. The stable isotope 25(OH)D half-life measurements provide a novel tool to investigate vitamin D metabolism and vitamin D expenditure and aid in the assessment of vitamin D requirements.

Prevalence of asthma among schoolchildren in Ahvaz, Islamic Republic of Iran

The prevalence of asthma was determined in a random sample of schoolchildren in Ahvaz city, southwest Islamic Republic of Iran, based on the International Study of Asthma and Allergy in Childhood [ISAAC] protocol. The prevalence of ever wheeze and current wheeze was 11.1% and 7.4% among 1410 children aged 6-7 years [parent-reported] and 17.7% and 10.3% among 1450 children aged 13-14 years [self-reported]. The prevalence of ever asthma was significantly higher among 13-14-year-olds [9.8%] than 6-7-year-olds [6.8%] but no significant difference was found between males and females in either age group. Comparisons are made with other Iranian cities and international data