scholarly journals Risk factors for and effects of persistent and severe hypophosphatemia following ferric carboxymaltose

Author(s):  
Benedikt Schaefer ◽  
Heinz Zoller ◽  
Myles Wolf

Abstract Context Hypophosphatemia, osteomalacia and fractures are complications of certain intravenous iron formulations. Objective To investigate risk factors for incident, severe and persistent hypophosphatemia, and associated alterations in bone and mineral biomarkers following intravenous iron treatment. Design Secondary analysis of the PHOPHARE-IDA randomized clinical trials. Setting Thirty outpatient clinics in the United States. Patients 245 patients aged 18 years or older with iron deficiency anemia. Interventions Intravenous ferric carboxymaltose (FCM) versus ferric derisomaltose (FDI). Main Outcome Measures Serum phosphate, intact fibroblast growth factor-23 (iFGF23), 1,25-dihydroxyvitamin D (1,25(OH)2D), ionized calcium, parathyroid hormone (PTH), and alkaline phosphatase. Results FCM was the only consistent risk factor for incident hypophosphatemia (<2.0 mg/dl; odds ratio versus FDI: 38.37; 95% confidence interval [CI]: 16.62, 88.56; p<0.001). Only FCM-treated patients developed severe hypophosphatemia (<1.0 mg/dl; 11.3%; 13/115) or persistent hypophosphatemia (<2.0 mg/dl at study end; 40.0%; 46/115). More severe hypophosphatemia associated with significantly greater increases in iFGF23, PTH, and alkaline phosphatase, and more severe decreases in 1,25(OH)2D and ionized calcium (all p<0.05). Patients with persistent versus resolved hypophosphatemia demonstrated significantly greater changes in iFGF23, PTH, 1,25(OH)2D and N-terminal procollagen-1 peptide levels (all p<0.01), but alkaline phosphatase increased similarly in both groups. Conclusions Treatment with FCM was the only consistent risk factor for hypophosphatemia. Patients who developed severe or persistent hypophosphatemia after FCM treatment manifested more severe derangements in bone and mineral metabolism. Changes in bone biomarkers continued beyond resolution of hypophosphatemia, suggesting ongoing effects on bone that may help explain the association of FCM with osteomalacia and fractures.

Cancers ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 1341
Author(s):  
Oliver Phipps ◽  
Hafid O. Al-Hassi ◽  
Mohammed N. Quraishi ◽  
Edward A. Dickson ◽  
Jonathan Segal ◽  
...  

Iron deficiency anemia is a common complication of colorectal cancer and may require iron therapy. Oral iron can increase the iron available to gut bacteria and may alter the colonic microbiota. We performed an intervention study to compare oral and intravenous iron therapy on the colonic tumor-associated (on-tumor) and paired non-tumor-associated adjacent (off-tumor) microbiota. Anemic patients with colorectal adenocarcinoma received either oral ferrous sulphate (n = 16) or intravenous ferric carboxymaltose (n = 24). On- and off-tumor biopsies were obtained post-surgery and microbial profiling was performed using 16S ribosomal RNA analysis. Off-tumor α- and β-diversity were significantly different between iron treatment groups. No differences in on-tumor diversity were observed. Off-tumor microbiota of oral iron-treated patients showed higher abundances of the orders Clostridiales, Cytophagales, and Anaeroplasmatales compared to intravenous iron-treated patients. The on-tumor microbiota was enriched with the orders Lactobacillales and Alteromonadales in the oral and intravenous iron groups, respectively. The on- and off-tumor microbiota associated with intravenous iron-treated patients infers increased abundances of enzymes involved in iron sequestration and anti-inflammatory/oncogenic metabolite production, compared to oral iron-treated patients. Collectively, this suggests that intravenous iron may be a more appropriate therapy to limit adverse microbial outcomes compared to oral iron.


Author(s):  
Mary Hannan ◽  
Sajid Ansari ◽  
Natalie Meza ◽  
Amanda H. Anderson ◽  
Anand Srivastava ◽  
...  

The Chronic Renal Insufficiency Cohort (CRIC) Study is an ongoing, multicenter, longitudinal study of nearly 5500 adults with CKD in the United States. Over the past 10 years, the CRIC Study has made significant contributions to the understanding of factors associated with CKD progression. This review summarizes findings from longitudinal studies evaluating risk factors associated with CKD progression in the CRIC Study, grouped into the following six thematic categories: (1) sociodemographic and economic (sex, race/ethnicity, and nephrology care); (2) behavioral (healthy lifestyle, diet, and sleep); (3) genetic (apoL1, genome-wide association study, and renin-angiotensin-aldosterone system pathway genes); (4) cardiovascular (atrial fibrillation, hypertension, and vascular stiffness); (5) metabolic (fibroblast growth factor 23 and urinary oxalate); and (6) novel factors (AKI and biomarkers of kidney injury). Additionally, we highlight areas where future research is needed, and opportunities for interdisciplinary collaboration.


QJM ◽  
2021 ◽  
Vol 114 (Supplement_1) ◽  
Author(s):  
Eman Mahmoud Fathy Barakat ◽  
Khalid Mahmoud AbdAlaziz ◽  
Mohamed Mahmoud Mahmoud El Tabbakh ◽  
Mohamed Kamal Alden Ali

Abstract Background Hepatocellular carcinoma (HCC) is the most common primary liver malignancy and is a leading cause of cancer-related death worldwide. In the United States, HCC is the ninth leading cause of cancer deaths. Despite advances in prevention techniques, screening, and new technologies in both diagnosis and treatment, incidence and mortality continue to rise. Cirrhosis remains the most important risk factor for the development of HCC regardless of etiology. Hepatitis B and C are independent risk factors for the development of cirrhosis. Alcohol consumption remains an important additional risk factor in the United States as alcohol abuse is five times higher than hepatitis C. Diagnosis is confirmed without pathologic confirmation. Screening includes both radiologic tests, such as ultrasound, computerized tomography, and magnetic resonance imaging, and serological markers such as αfetoprotein at 6-month interval. Aim To compare characteristics and behavior of Hepatocellular carcinoma (HCC) in chronic HCV patients and HVB patients Patients and Methods The current study was conducted on patients with de HCC presented at HCC clinic, Tropical medicine department Ain Shams University Hospitals between December 2017 and D ecember 2018, aged (18-70 years old) . Results eline characteristics of study population shown in Table 1 at enrolment, including gender, Education status, co-morbidity, underlying presence or absence of cirrhosis, Child-Pugh class of patients infected with viral hepatitis, and alpha-fetoprotein levels. Male proportion observed to be predominant in both HCV (62%) and HBV (75.4%) infected HCC population. Overall prevalence of HCV and HBV in patients having HCC was 65.95% and 34.04%, respectively. Presence of underlying liver cirrhosis was more significantly associated with HCV seropositives as compared to HBV seropositive patients (p0.05). Table 2 shows comparison of means between HCV and HBV seropositive patients with HCC. In univariate analysis, mean age difference (11.6 years), and total bilirubin levels (-1.91mg/dl) were the only statistically significant observations noted among HCV-HCC group (p = 0.05) Conclusion Hepatocellular carcinoma is mainly caused by Hepatitis C and Hepatitis B viruses, but latter showed predominance, comparatively worldwide and correlated HBV directly as a cause of HCC rather than HCV whose relation with HCC is still unclear (Shepard et al., 2006; Di Bisceglie, 2009). Because of the geographical differences and risk factors, the epidemiological burden of HCV and HBV has been observed different in different areas of the world. In developing countries due to high burden of HCV infection as compared to HBV such as in Taiwan (HCV 17.0%, HBV 13.8%) (Kao et al., 2011), Guam (HCV 19.6%, HBV 18%) (Haddock et al., 2013), and Pakistan (HCV 4.8%, HBV 2.5%) (Rehman et al., 1996; Raza et al., 2007; Qureshi et al., 2010; Butt et al., 2012;) will possibly


Blood ◽  
2019 ◽  
Vol 134 (Supplement_1) ◽  
pp. 2240-2240
Author(s):  
Susan Kirk ◽  
Donald Mahoney ◽  
Melanie Brooke Bernhardt ◽  
Jacquelyn M. Powers

INTRODUCTION Intravenous iron therapy in children with iron deficiency anemia (IDA) has previously been limited to those with severe or refractory anemia. However, increased availability of intravenous iron preparations with improved safety profiles has increased its utilization in both the adult and pediatric patient populations. Ferric carboxymaltose (FCM) was approved for adult patients by the Food and Drug Administration (FDA) in 2014 and has lower rates of severe allergic reactions. However, literature on adult patients has reported the development hypophosphatemia in up 50% of those receiving the drug. In early stages, hypophosphatemia can lead to abnormal bone mineral metabolism and hypercalciuria. Rickets and osteomalacia can result after prolonged hypophosphatemia. Severe, prolonged hypophosphatemia (<1 mg/mL) is associated with neurologic, cardiopulmonary, muscular, and hematologic complications. Although not FDA approved for pediatric use, FCM is increasingly being utilized for IDA in children. Hypophosphatemia in children treated with FCM has not been formally evaluated or described. We sought to assess available phosphorus levels in children treated with FCM at a tertiary care center. METHODS This was a single center retrospective cohort study of all children who received FCM over the initial 2.5 year period for which the drug was added to our institution's formulary (November 1, 2016 through April 30, 2019). Pharmacy records of all FCM infusions administered over this period were obtained. Medical record numbers of all patients who received an infusion were then searched for any available phosphorus testing. Patients were included in the review if they had phosphorus laboratory results available from 1 to 6 weeks post-receipt of FCM and were less than 21 years of age at the time of infusion. Hypophosphatemia was defined as a phosphorus level below the lower limit of normal for age as delineated by our institution's central laboratory. Changes in phosphorus levels were calculated in those patients in whom pre-infusion phosphorus levels were also available within the 4 weeks prior to drug infusion. When multiple phosphorus levels were available within the post-infusion window, the lowest value was selected to calculate changes in levels. The electronic medical record (EMR) was reviewed in all patients in whom hypophosphatemia was identified to assess for administration of supplemental phosphorus, as well as other clinical factors that may affect phosphorus levels such as the administration of total parental nutrition (TPN) and/or renal medications (i.e. furosemide), as these are known risk factors for hypophosphatemia. RESULTS From November 1, 2016 through April 30, 2019, 1,081 infusions of FCM were administered in 656 patients. Post-infusion phosphorus testing was available in 165 patients in whom 247 infusions were administered (range 1 to 6). Patients' median age was 4.6 years (range 4 months to 20.6 years) and 56% (n=92) were female. Hypophosphatemia occurred after 36 (15%) infusions in 32 unique patients (19%). Six patients (19%) received potassium phosphorus supplementation (Table). In the 23 patients in whom phosphorus testing was available at 6 weeks, 15 (65%) continued to have phosphorus levels below the normal value for age. Of the entire cohort, pre- and post-infusion phosphorus levels were available relative to 197 infusions (80%) in 136 unique patients (82%). The median change in phosphorus was -0.6 mg/dL (IQR -0.1, -1.6). CONCLUSIONS The assessment of serum chemistries, including phosphorus, is not routinely performed in otherwise healthy children with iron deficiency. While over 650 children received over 1000 infusions of FCM during a 2.5 year period, only 165 patients had phosphorus testing available during the stated time frame of the infusion. In those in whom testing was available, and in which hypophosphatemia occurred, the majority were patients admitted to the hospital with co-morbid conditions or complex clinical care for which phosphorus levels may be affected. Our center has developed a clinical protocol to obtain baseline phosphorus levels in all children in whom intravenous FCM is being considered. Post FCM therapy, phosphorus monitoring is being performed to better identify those patients who may be at risk for hypophosphatemia and in whom phosphorus supplementation may be indicated. OffLabel Disclosure: Ferric carboxymaltose is FDA approved for treatment of iron deficiency in adults. This presentation will discuss the use of ferric carboxymaltose to treat iron deficiency in pediatric patients.


Author(s):  
Deniz Yeter ◽  
Ellen C. Banks ◽  
Michael Aschner

There is no safe detectable level of lead (Pb) in the blood of young children. In the United States, predominantly African-American Black children are exposed to more Pb and present with the highest mean blood lead levels (BLLs). However, racial disparity has not been fully examined within risk factors for early childhood Pb exposure. Therefore, we conducted secondary analysis of blood Pb determinations for 2841 US children at ages 1–5 years with citizenship examined by the cross-sectional 1999 to 2010 National Health and Nutrition Examination Survey (NHANES). The primary measures were racial disparities for continuous BLLs or an elevated BLL (EBLL) ≥5 µg/dL in selected risk factors between non-Hispanic Black children (n = 608) and both non-Hispanic White (n = 1208) or Hispanic (n = 1025) children. Selected risk factors included indoor household smoking, low income or poverty, older housing built before 1978 or 1950, low primary guardian education <12th grade/general education diploma (GED), or younger age between 1 and 3 years. Data were analyzed using a regression model corrected for risk factors and other confounding variables. Overall, Black children had an adjusted +0.83 µg/dL blood Pb (95% CI 0.65 to 1.00, p < 0.001) and a 2.8 times higher odds of having an EBLL ≥5 µg/dL (95% CI 1.9 to 3.9, p < 0.001). When stratified by risk factor group, Black children had an adjusted 0.73 to 1.41 µg/dL more blood Pb (p < 0.001 respectively) and a 1.8 to 5.6 times higher odds of having an EBLL ≥5 µg/dL (p ≤ 0.05 respectively) for every selected risk factor that was tested. For Black children nationwide, one in four residing in pre-1950 housing and one in six living in poverty presented with an EBLL ≥5 µg/dL. In conclusion, significant nationwide racial disparity in blood Pb outcomes persist for predominantly African-American Black children even after correcting for risk factors and other variables. This racial disparity further persists within housing, socio-economic, and age-related risk factors of blood Pb outcomes that are much more severe for Black children.


Author(s):  
Divyani Agrawal ◽  
Deepa Lokwani Masand

Background: Anemia is one of the common manageable problem among the pregnant women worldwide, which contributes to maternal and perinatal mortality. This study aims to compare the efficacy and safety of intravenous ferric carboxymaltose with intravenous iron sucrose in treating anemia during pregnancy. Objective of this study was to compare safety and efficacy of intravenous ferric carboxymaltose with intravenous ferric sucrose in iron deficiency anemia during pregnancy.Methods: It’s an interventional prospective study conducted in Department of Obstetrics and Gynecology at NIMS, Jaipur, Rajasthan, India constituting of 100 pregnant women. Group 1- 50 pregnant women were treated with intravenous ferric carboxymaltose and Group 2: 50 pregnant women were treated with intravenous iron sucrose. Hemoglobin and serum ferritin levels were measured pre and post treatment with parenteral iron therapy. The efficacy of intravenous ferric carboxymaltose in comparison to intravenous iron sucrose was assessed. The evaluation of safety and tolerance with the parenteral therapy was also performed.Results: Anemia during pregnancy was more prevalent among the reproductive age group and in multiparous women. The mean rise in the hemoglobin level with ferric carboxymaltose was 2.92 gm/dl and with that of iron, sucrose was 1.08 gm/dl. The man rise in the serum ferritin levels with ferric carboxymaltose was 64.97ng/ml and with iron sucrose was 31.64 ng/ml. Ferric carboxymaltose was observed to be safer with no adverse events in comparison to the Iron sucrose which was related with adverse events among 03 pregnant women.Conclusions: Intravenous ferric carboxymaltose was more efficacious and safer in comparison to intravenous iron sucrose among pregnant women. Hence, ferric carboxymaltose is the drug of choice in treatment of iron deficiency anemia during pregnancy.


2018 ◽  
Vol 11 ◽  
pp. 117955221879117 ◽  
Author(s):  
Julie A Stephens ◽  
James L Fisher ◽  
Jessica L Krok-Schoen ◽  
Ryan D Baltic ◽  
Holly L Sobotka ◽  
...  

Objective: The incidence of esophageal adenocarcinoma, one of the most lethal gastroenterological diseases, has been increasing since the 1960s. Prevention of esophageal adenocarcinoma is important because no early detection screening programs have been shown to reduce mortality. Obesity, gastroesophageal reflux disease, and tobacco smoking are risk factors for esophageal adenocarcinoma. Due to the high prevalence in Ohio of obesity (32.6%) and cigarette smoking (21.0%), this study sought to identify trends and patterns of these risk factors and esophageal adenocarcinoma in Ohio as compared with the United States. Methods: Data from the Ohio Cancer Incidence Surveillance System, Surveillance Epidemiology and End Results Program (SEER), and Behavioral Risk Factor Surveillance System were used. Incidence rates overall, by demographics and by county, as well as trends in incidence of esophageal adenocarcinoma and the percent of esophageal adenocarcinoma among esophageal cancers were examined. Trends in obesity and cigarette smoking in Ohio, and the prevalence of each by county, were reported. Results: There was an increasing trend in esophageal adenocarcinoma incidence in Ohio. Ohio’s average annual esophageal adenocarcinoma incidence rate was higher than the SEER rate overall and for each sex, race, and age group in 2009 to 2013. There was also an increasing prevalence of obesity in Ohio. Although the prevalence of cigarette smoking has been stable, it was high in Ohio compared with the United States. Conclusions: Health care providers and researchers should be aware of the esophageal adenocarcinoma incidence rates and risk factor patterns and tailor interventions for areas and populations at higher risk.


2018 ◽  
Vol 36 (3) ◽  
pp. 264-265
Author(s):  
Susan Carla Stone

Death by suicide has increased in the United States. Experts have identified risk factors that may identify those at risk. It is understood that depression is one of the major risk factor. The families and community are the secondary victims when a suicide attempt or completion is made, and they are at risk for complicated grief. Recently, our team was consulted for the case of a young woman with a catastrophic suicide attempt.


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