scholarly journals A low serum iron level is a potential predictor of poor renal function in patients following laparoscopic sleeve gastrectomy: a retrospective study

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Tien-Chou Soong ◽  
I.-Jung Feng ◽  
Jen-Yin Chen ◽  
I.-Wen Chen ◽  
Hong-Yi Tong ◽  
...  
Keyword(s):  
Renal Function ◽  
Linear Regression ◽  
Multiple Linear Regression ◽  
Serum Iron ◽  
Large Scale ◽  
Iron Level ◽  
Regression Analyses ◽  
Serum Iron Level ◽  
Poor Renal Function ◽  
Significant Difference

AbstractThis study aimed to assess the association of serum iron level (Iron) with the estimated glomerular filtration rate (eGFR) after bariatric surgery (BS). We reviewed 210 patients with mean age of 39.1 ± 10.6 years (body mass index, 41.4 ± 5.5 kg/m2) undergoing BS. The primary outcome was the relationship between Iron and eGFR at 12-month after surgery. Multiple linear regression analyses were performed using postoperative eGFR as dependent variables and using Iron and other variables (i.e., age) as independent variables. At 12-month follow-up, 94 patients were analyzed. BMI significantly decreased, whereas serum iron level significantly increased. Although the percentage of patients with eGFR of < 90 mL/min/1.73 m2 increased during the study period, no significant difference was found in postoperative 12-month eGFR. No correlations were noted between Iron and eGFR at baseline and postoperative 1 and 6 months, whereas a significant relationship was observed between Iron and postoperative 12-month eGFR. Multiple linear regression analyses revealed that Iron and presence of diabetes were the independent predictors of postoperative 12-month eGFR. This pilot study showed a positive association of postoperative serum iron level with renal function in this patient population. Further large-scale trials are needed to confirm the findings.

scholarly journals Serum Iron Level as a Potential Predictor of Coronavirus Disease 2019 Severity and Mortality: A Retrospective Study

2020 ◽  
Vol 7 (7) ◽  
Author(s):  
Kang Zhao ◽  
Jucun Huang ◽  
Dan Dai ◽  
Yuwei Feng ◽  
Liming Liu ◽  
...  
Keyword(s):  
Iron Deficiency ◽  
Serum Iron ◽  
Iron Status ◽  
Iron Concentration ◽  
Iron Level ◽  
Serum Iron Level ◽  
Amyloid A ◽  
Significant Difference ◽  
Before And After ◽  
Low Serum

Abstract Background Various types of pulmonary diseases are associated with iron deficiency. However, information on iron status in coronavirus disease 2019 (COVID-19) is scarce. Methods This study included 50 hospitalized patients with confirmed COVID-19. The role of serum iron in predicting severity and mortality of COVID-19 was evaluated. Results The most common symptoms of COVID-19 patients in this study were cough (82%), fever (64%), and chest distress (42%). Of the 50 patients, 45 (90%) patients had abnormally low serum iron levels (&lt;7.8 μmol/L). The severity of COVID-19 was negatively correlated with serum iron levels before and after treatment and was positively correlated with C-reactive protein, serum amyloid A, D-dimer, lactate dehydrogenase, urea nitrogen, and myoglobin levels. Decreased serum iron level could predict the transition of COVID-19 from mild to severe and critical illness. Seven (53.8%) patients with a lower serum iron level after treatment in the critical group had died. There was a significant difference in posttreatment serum iron levels between COVID-19 survivors and nonsurvivors. Conclusions Serum iron deficiency was detected in the patients with COVID-19. The severity and mortality of the disease was closely correlated with serum iron levels. Low serum iron concentration was an independent risk factor for death in COVID-19 patients.

scholarly journals Role of vitamin D, serum zinc, and serum iron deficiency in community-acquired pneumonia in children

2021 ◽  
Vol 69 (1) ◽  
Author(s):  
Asmaa Alhusseiny Ahmed Alsharkawy ◽  
Ahmed R. Rezk
Keyword(s):  
Vitamin D ◽  
Serum Iron ◽  
Serum Zinc ◽  
Community Acquired Pneumonia ◽  
Control Group ◽  
Iron Level ◽  
Healthy Children ◽  
Serum Iron Level ◽  
Vitamin D Levels ◽  
Significant Difference

Abstract Background Community-acquired pneumonia is a major cause of death among children. Inadequate nutrition disrupts the immune system and increases the susceptibility to infections. We aimed to evaluate the association between vitamin D, serum zinc, and iron, and pneumonia. A case-control study was conducted at the outpatient clinic and emergency room of Children’s Hospital. Thirty-one patients with community-acquired pneumonia and 36 healthy children (control group) underwent serum sampling for vitamin D, zinc, and iron. Results Most patients had mild form (n = 17, 54.8%). All patients survived and were discharged. The serum iron level showed a non-significant difference between pneumonia and control groups (p ˃ 0.05). TIBC, vitamin D, and serum zinc were significantly lower in the patient group than the control group (P value = 0.04, < 0.001, and 0.03, respectively). Vitamin D deficiency was highly associated with the severity of pneumonia (P value = 0.008). Conclusion Adequate serum zinc and vitamin D levels may be protective against infection with community-acquired pneumonia in children aged from 2 months to 5 years old, but not iron.

scholarly journals Determination of Level of Serum Iron among Routine Iron Supplemented Pregnant Women Attending Private Clinic in Sulaimani City, Kurdistan-Iraq

2021 ◽  
Vol 11 (1) ◽  
pp. 76-79
Author(s):  
Sardar M. Weli ◽  
Osama H. Shareef ◽  
Syamand A. Qadir
Keyword(s):  
Iron Deficiency ◽  
Pregnant Women ◽  
Serum Iron ◽  
Age Groups ◽  
First Trimester ◽  
Private Clinic ◽  
Iron Level ◽  
Serum Iron Level ◽  
Significant Difference ◽  
Questionnaire Form

Iron deficiency, with or without anemia, is common in pregnant women and more than half of the anemia’s in the world are due to the deficiency of iron in the serum. The aims of this study were to determine the percentage and level of serum iron among iron supplemented pregnant women in different trimesters and in different age groups among supplemented pregnant women in Sulaimani city. This study was carried out in the private clinic in the Sulaimani city-Kurdistan Region of Iraq. The pregnant women were participated and enrolled between the first of December 2018 and first of December 2019. Two hundred and seventy-five healthy and iron supplemented pregnant women were selected randomly and the questionnaire form, which contains information about age of mothers and their gestational age, was filled and serum iron level was measured by COBAS C111 analyzer. The results of this study found that the percentage of iron deficiency among participants was high 33%, 45%, and 52.6 % in the first trimester in different age groups <25, 25–35, and above 35 years old, respectively. However, in the third trimesters decreased to 12.5%, 7.1%, and 3.7% in <25, 25–35, and above 35 years old, respectively. Regarding serum iron levels, the present study found that there were significant differences between ages 25 and 35 with age <25 years. However, there was no significant difference between first, second, and third trimesters. This study concludes that the percentage of iron deficiency among supplemented pregnant women was high compared to other cities or other countries. Pregnant women who their ages <25 are at risk of serum iron deficiency. On the other hand, pregnancy trimesters had no effects on the serum iron level among supplemented pregnant women.

scholarly journals Haemoglobin, Serum Iron Level and Cardiovascular Status in Advanced Stages of Chronic Kidney Disease Patients admitted in A Tertiary Care Centre

2021 ◽  
Vol 33 (1) ◽  
pp. 34-39
Author(s):  
Md Yousuf Ali ◽  
Md Ehsanul Alam ◽  
Aminur Rahman ◽  
Nadira Majid
Keyword(s):  
Haemoglobin Level ◽  
Serum Ferritin ◽  
Serum Iron ◽  
Ferritin Level ◽  
Iron Level ◽  
Serum Iron Level ◽  
Number Of Patients ◽  
Significant Difference ◽  
History Of ◽  
Advanced Stages

Background: Anaemia due to advanced stages of chronic kidney disease increases morbidity of patients. Early detection and correction of anaemia may be helpful in preventing the progress of the disease & its cardiovascular outcomes. The objective of this study was to evaluate hemoglobin, serum iron level and cardiovascular status in advanced of CKD patients. Methods: This was a cross sectional observational study on 150 cases of diagnosed advanced stages (3B,4 &5) of CKD patients in indoor of department of medicine of Mitford Hospital, Dhaka from July 2019 to January 2020. Convenience sampling was done. Data were analyzed with SPSS 26. Results: Total number of patients were 150. Male were 93 (62%) and female were 57 (38%). The mean (±SD) age was 55.22 (±10.30) years (range 33 - 75 years). Among the study subjects 38% had history of blood transfusion, 60% had history of iron supplementation and 12% subjects received erythropoietin. Mean (±SD) haemoglobin level was 7.61 (±2.54) g/dl. Seventy percent of the study subjects had haemoglobin level < 9 g/dl and rest had ³9 g/dl. Significant difference was found in between these two groups (p = 0.036). In the present study, mean (±SD) serum iron level was 15.59 (±07.39) μmol/l. In 46% of the study subjects, iron level was 7.3μ mol/l and 52% had iron level between 7.3 to 23.6 μmole/ lit. Mean (± SD) ferritin level of the study subjects was 155.22 (±92.32) ng/ ml. In 58% of the study subjects ferritin level was < 100ng/ ml and 42% had >100 ng/ml. Significant difference was found in between these two groups (p = 0.041) (Table-IV). Ferritin level had significant positive relationship with blood transfusion, iron and erythropoietin supplementation on logistic regression analysis. Haemoglobin and serum ferritin level was positively correlated with eGFR of the study subjects. Statistical analysis showed significant relationship between eGFR with haemoglobin and serum ferritin. Forty six percent of the study subjects had Transferrin saturation (TSAT) level below 20%. Fifty four percent subjects had a TSAT level above 20%. Significant difference was found in between these two groups (p = 0.001). In correlation analysis, haemoglobin, serum ferritin and TSAT level in the study subjects had negative relationship with duration of CKD in years. Relationship of haemoglobin and TSAT level with duration of CKD was statistically significant. In correlation analysis, serum TIBC level had negative relationship with haemoglobin level which was statistically significant. Serum iron, ferritin and TSAT level in the study subjects were positively correlated with haemoglobin level. Relationship of haemoglobin with serum iron level and TSAT level was statistically significant. Twenty percent of the study subjects had peripheral vascular disease, 111 (74%) of the study subjects had hypertension, 66 (44%) had ischaemic heart disease, 27 (18%) had a history of acute myocardial infarction, 24 (16%) had chronic heart failure, 93 (62%) had dyslipidemia and 27 (18%) patients had history of stroke. Conclusion: In this study it was observed that TSAT appears to be a more useful indicator for measuring the frequency of iron deficiency than serum iron, TIBC and serum ferritin. The cardiovascular comorbidities plagued significant number of patients with advanced CKD. Bangladesh J Medicine July 2022; 33(1) : 34-39

scholarly journals Correlation Between Brain-Derived Neurotrophic Factor Levels and Serum Iron Levels in Stunted Children Living in Malaria-Endemic Areas

2020 ◽  
Vol 8 (E) ◽  
pp. 318-321
Author(s):  
Rostika Flora ◽  
Mohammad Zulkarnain ◽  
Nur Alam Fajar ◽  
Achmad Fickry Faisa ◽  
Nurlaily Nurlaily ◽  
...  
Keyword(s):  
Neurotrophic Factor ◽  
Serum Iron ◽  
Pearson Correlation ◽  
Simple Random Sampling ◽  
Brain Derived Neurotrophic Factor ◽  
Enzyme Linked Immunosorbent Assay ◽  
Iron Level ◽  
Serum Iron Level ◽  
Significant Difference ◽  
Endemic Areas

BACKGROUND: Children who are living in malaria-endemic areas are highly vulnerable to malaria infections. The presence of malaria infection and low nutrient intake results in an increased incidence of stunting in children, especially those living in malaria-endemic areas. The stunting in children may reduce their cognitive functions. AIM: This study aims to analyze the correlation between brain-derived neurotrophic factor (BDNF) levels and serum iron in stunted children living in malaria-endemic areas. METHODS: The design of this research was a case–control study. The sample of this study was 60 elementary schoolchildren aged 9–12 years collected from five regencies in Bengkulu province. Among the samples, 30 of them were stunted and the remaining were non-stunted ones. The technique used to collect the samples was simple random sampling. Growth stunting was identified by calculating the Z-score of height-for-age (H/A). In addition, the whole blood of each research subject was drawn for the measurement of BDNF and serum iron levels. Serum BDNF level was measured using a method of enzyme-linked immunosorbent assay (ELISA), and serum iron level was measured using spectrophotometry. The characteristic data of the sample were collected from questionnaires. The obtained research data were then analyzed using the independent t-test and the Pearson correlation. RESULTS: The levels of BDNF and serum iron in stunted children were lower than those in non-stunted ones (3.38 ± 1.05 vs. 4.16 ± 0.41 μg/dL and 31.57 ± 9.88 vs. 52.99 ± 12.60 μg/dL). There was a significant difference (p < 0.05) in the mean level of BDNF and serum iron levels between stunted children and non-stunted ones. The results of the Pearson analysis on BDNF and serum iron levels indicated p = 0.000 and r = 0.454. CONCLUSION: There was a significant correlation between BDNF levels and serum iron levels in stunted children living in malaria-endemic areas.

scholarly journals Author Correction: The U‑shaped association of serum iron level with disease severity in adult hospitalized patients with COVID‑19

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Kentaro Tojo ◽  
Yoh Sugawara ◽  
Yasufumi Oi ◽  
Fumihiro Ogawa ◽  
Takuma Higurashi ◽  
...  
Keyword(s):  
Disease Severity ◽  
Serum Iron ◽  
Hospitalized Patients ◽  
Iron Level ◽  
Serum Iron Level

scholarly journals Thyroid Function Changes and Pubertal Progress in Females: A Longitudinal Study in Iodine-Sufficient Areas of East China

2021 ◽  
Vol 12 ◽  
Author(s):  
Yingying Wang ◽  
Dandan He ◽  
Chaowei Fu ◽  
Xiaolian Dong ◽  
Feng Jiang ◽  
...  
Keyword(s):  
Linear Regression ◽  
Multiple Linear Regression ◽  
Thyroid Function ◽  
Pubertal Development ◽  
Thyroid Stimulating Hormone ◽  
East China ◽  
Regression Analyses ◽  
Free Triiodothyronine ◽  
Serum Tsh

BackgroundThe onset of puberty is influenced by thyroid function, and thyroid hormones (THs) fluctuate substantially during the period of pubertal development. However, it needs to be further clarified how THs change at specific puberty stages and how it influences pubertal development in girls. So far, longitudinal data from China are scarce.MethodsA cohort study was conducted among girls during puberty in iodine-sufficient regions of East China between 2017 to 2019. Serum thyroid stimulating hormone (TSH), free triiodothyronine (FT3), and free thyroxine (FT4) were determined for each participant. Thyroid homeostasis structure parameters (THSPs), including the ratio of FT4 to FT3 (FT4/FT3), Jostel’s TSH index (TSHI), and thyroid feedback quantile-based index (TFQI), were calculated. Puberty category scores (PCS), calculated based on the Puberty Development Scale (PDS), was used to assess the stage of puberty. Girls were grouped into three categories according to PCS changes (△PCS) and six categories according puberty stage (BPFP: pre-pubertal at both baseline and follow-up; BPFL: pre-pubertal at baseline and late-pubertal at follow-up, respectively; BPFT: pre-pubertal at baseline and post-pubertal at follow-up, respectively; BLFL: late-pubertal at both baseline and follow-up; BLFT: late-pubertal at baseline and post-pubertal at follow-up, respectively; BTFT: post-pubertal at both baseline and follow-up). Multiple linear regression analyses were used to evaluate the associations of THs changes with pubertal progress.ResultsThe levels of serum TSH and FT3 decreased while serum FT4 increased during the study period (P&lt;0.001). In multiple linear regression analyses, after adjustment for covariables, FT3 decreased by an additional 0.24 pmol/L (95% CI: -0.47 to -0.01) in the higher △PCS group than the lower △PCS group. Compared with the BLFL group, the BPFT group showed an additional decline in FT3 (β= -0.39 pmol/L, 95%CI: -0.73 to -0.04), the BTFT group showed a lower decline in TSH (β=0.50 mU/L, 95% CI: 0.21 to 0.80) and a lower decline in TSHI (β=0.24, 95%CI: 0.06 to 0.41), respectively. There was no association of △FT4 or △TFQI with △PCS or the puberty pattern.ConclusionsSerum TSH and FT3 decreased while serum FT4 increased among girls during puberty. Both the initial stage and the velocity of pubertal development were related to thyroid hormone fluctuations.

scholarly journals Decreased renal function increases the nighttime urine volume rate by carryover of salt excretion to the nighttime

2021 ◽  
Author(s):  
Kentaro Takezawa ◽  
Sohei Kuribayashi ◽  
Koichi Okada ◽  
Yosuke Sekii ◽  
Yusuke Inagaki ◽  
...  
Keyword(s):  
Renal Function ◽  
Regression Analysis ◽  
Linear Regression ◽  
Multiple Linear Regression ◽  
Excretion Rate ◽  
Linear Regression Analysis ◽  
Urine Volume ◽  
Multiple Linear Regression Analysis ◽  
Volume Rate ◽  
Salt Excretion

Abstract Purpose: To determine the pathophysiology of nocturnal polyuria associated with renal dysfunction.Methods: Patients who underwent laparoscopic nephrectomy were studied prospectively. The diurnal variation in urine volume, osmolality, and salt excretion were measured on preoperative day two and postoperative day seven. The factors associated with an increase in the nighttime urine volume rate with decreased renal function were evaluated by multiple linear regression analysis.Results: Forty-nine patients were included. The eGFR decreased from 73.3 ± 2.0 to 47.2 ± 1.6 mL/min/1.73 m2 (P < 0.01) and the nighttime urine volume rate increased from 40.6% ± 2.0% to 45.3% ± 1.5% (P = 0.04) with nephrectomy. The nighttime urine osmolality decreased from 273 ± 15 to 212 ± 10 mOsm/kg (P < 0.01) and the nighttime salt excretion rate increased from 38.7% ± 2.1% to 48.8% ± 1.7% (P < 0.01) with nephrectomy. Multiple linear regression analysis revealed that the increase in the nighttime urine volume rate was strongly affected by the increase in the nighttime salt excretion rate.Conclusion: A decrease in renal function causes an increase in the nighttime urine volume rate, mainly due to an increase in nighttime salt excretion.Trial registration number: UMIN000036760 (University Hospital Medical Information Network Clinical Trials Registry)Date of registration: From June 1st, 2019 to October 31th 2020

scholarly journals Mortalité du sapin baumier défolié par la tordeuse des bourgeons de l'épinette dans la région de la Gatineau au Québec

1982 ◽  
Vol 58 (5) ◽  
pp. 213-219 ◽  
Author(s):  
Jean Beaulieu ◽  
Yvan J. Hardy
Keyword(s):  
Linear Regression ◽  
Multiple Linear Regression ◽  
Least Squares ◽  
Random Number ◽  
Least Squares Method ◽  
Random Number Generator ◽  
Balsam Fir ◽  
Number Generator ◽  
Profit Analysis ◽  
Significant Difference

This paper presents a method of analysis which differentiates between spruce budworm caused mortality and regular mortality on balsam fir in the Gatineau region in Quebec. A first attempt was made using multiple linear regression and a uniform random number generator. In order to overcome the bias inherent to the least squares method when dealing with a binary (0,1) dependent variable, a profit analysis was also conducted. In this case, the parameters and their variance were estimated using likehood method. These two approaches proved to be equivalent when percent budworm caused mortality was compared within the 1958 to 1979 period covered by the data at hand, while the outbreak lasted from 1968 to 1975.In 1979, approximately 55% of the stems had been killed by the budworm, accounting for 53% of the volume. Maple-yellow birch associations were more affected than fir associations although no significant difference was found. Fir mortality was delayed by aerial spraying of insecticides but this advantage disappeared as soon as the spray operations came to an end.

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