Serum Zinc Concentrations Research Articles

Zinc Deficiency as a General Feature of Cancer: a Review of the Literature.

Trace elements are minerals that are present in very low concentrations in the human body and yet are crucial for a wide range of physiological functions. Zinc, the second most abundant trace element, is obtained primarily from the diet. After being taken up in the intestine, zinc is distributed to various target organs, where it plays key roles in processes such as immunity, protein folding, apoptosis, and antioxidant activity. Given the important role of zinc in a wide range of enzymatic reactions and physiological processes, zinc deficiency has been identified in a variety of diseases, notably cancer. In recent years, multiple meta-analyses and reviews looking at zinc levels in individual cancer types have been published, as have a plethora of primary studies demonstrating a link between low zinc levels and specific types of cancer. In this review, we summarize recent evidence implicating low zinc concentrations in serum or tissues as a characteristic in a wide range of cancers. We also discuss preliminary findings indicating that zinc level measurement could ultimately become a useful clinical tool for cancer diagnosis and predicting outcomes in patients with cancer. Finally, we suggest future directions for further elucidating the role of zinc deficiency in cancer development and progression.

Serum concentrations of retinol, β-carotene and zinc in women with breast cancer submitted to radiotherapy according to prior treatment modality and toxicity

Serum concentrations of retinol, β-carotene and zinc in women with breast cancer submitted to radiotherapy according to prior treatment modality and toxicity

Plasma selenium and zinc alter associations between nephrotoxic metals and chronic kidney disease: Results from NHANES database 2011-2018.

Chronic kidney disease (CKD) is a condition defined as a persistent change in kidney structure or function, or both, that compromises human health. Environmental exposure to heavy metals (e.g. cadmium, lead, arsenic and mercury) is common, and high exposure levels are known to cause nephrotoxicity. Micronutrients such as selenium and zinc are positively associated with better kidney function and renal outcomes. This study determined the associations between CKD and heavy metal exposures measured in blood or urine within a community-dwelling population, and assessed whether and how selenium and zinc modified the associations. Data were extracted from 4 cycles of the US National Health and Nutrition Examination Survey (NHANES) database (2011-2012, 2013-2014, 2015-2016 and 2017-2018). Univariate analysis showed that higher quartiles of plasma lead and cadmium concentration were more likely associated with CKD than the lowest quartile, and along with folate, were linked to greater odds of CKD. Conversely, as plasma selenium and serum zinc increased, the odds of CKD decreased. Multivariate analysis had similar results after adjusting for relevant confounders. Higher plasma cadmium quartiles were associated with higher odds of CKD. Associations between higher quartiles of plasma selenium and serum zinc were significantly associated with lower odds of CKD. Elevated blood levels of heavy metals increase CKD, whereas elevated concentrations of plasma selenium and serum zinc decrease CKD. A high serum zinc concentration appears to interact with low-toxicity heavy metals to reduce CKD risk. This study suggests that increased selenium and zinc in the body along with avoidance of heavy metal exposures could protect against CKD.

Co-delivery of streptomycin and hydroxychloroquine by labeled solid lipid nanoparticles to treat brucellosis: an animal study

Can brucellosis-related biochemical and immunological parameters be used as diagnostic and treatment indicators? The goal of this project was to look at biochemical parameters, trace elements, and inflammatory factors in the acute and chronic stages of brucellosis after treatment with streptomycin and hydroxychloroquine-loaded solid lipid nanoparticles (STR-HCQ-SLN). The double emulsion method was used for the synthesis of nanoparticles. Serum levels of trace elements, vitamin D, CRP, and biochemical parameters were measured in rats involved in brucellosis. The therapeutic effect of STR-HCQ-SLN was compared with that of free drugs. In both healthy and infected rats, serum concentrations of copper, zinc, iron, magnesium, potassium, and biochemical parameters of the liver were significantly different. By altering the serum levels of the aforementioned factors, treatment with STR-HCQ-SLN had a positive therapeutic effect on chronic brucellosis. Vitamin D levels declined (46.4%) and CRP levels rose (from 7.5 mg to less than 1 mg) throughout the acute and chronic stages of brucellosis. This study showed that by comparing the biochemical parameters and the levels of trace elements in the serum of healthy and diseased mice in the acute and chronic stages of brucellosis, it is possible to get help from other routine methods for diagnosis.

Ceruloplasmin and some biochemical parameters as a marker for acute myeloid leukemic patients

Acute myeloid leukemia is a second type of leukemia and has more effect on elder patients than adult. This research's objective was to measure the serum levels of ceruloplasmin (CP), ferritin (FR), vitamin B12 (VitB12), folic acid (FA), zinc (Zn), copper (Cu), and iron (Fe) in acute myeloid leukemic patients (AML) (before and after taking chemotherapy) and healthy control groups. In this study, about (160) blood samples (males and females) were collected from acute myeloid leukemic patients in Erbil’s Nanakali hospital and they were separated into four groups: Group 1 (G1) including (40) Apparently healthy control group, Group 2 (G2) include (40) acute myeloid leukemic patients before taking chemotherapy (new cases), Group 3 (G3) include (40) acute myeloid leukemia patients taking chemotherapy for one cycle, and Group 4 (G4) include (40) acute myeloid leukemic patients with taking chemotherapy for more than one cycle. The outcomes display a significant increase in serum concentration of ceruloplasmin, ferritin, vitamin B12, and iron in all patient groups when compared with control groups. While the serum concentration of folic acid, zinc, and copper decreased in all patient groups when compared with the healthy control group. In addition, the correlation analysis displays that there was a significant positive correlation between ceruloplasmin with ferritin, vitamin B12, and iron, on another hand have a non-significant negative correlation between ceruloplasmin with folic acid, zinc, and copper. According to the present study, there was a direct correlation between AML patients with the serum levels of CP, FR, VitB12, FA, Zn, Cu, and Fe. A high area under the curve of our data suggests that testing for (CP, FR, VitB12, FA, Cu, and Fe) could be helpful to detect AML. However, zinc is not a good biomarker for detecting AML patients.

Zinc Ameliorates Tripterygium Glycosides-Induced Reproductive Impairment in Male Rats by Regulating Zinc Homeostasis and Expression of Oxidative Stress-Related Genes.

Tripterygium glycosides (TG) can seriously damage male reproductive function, and the reproductive system is difficult to restore after stopping the administration of TG in male rats. Zinc (Zn) is one of the most important trace elements in the human body and plays an important role in maintaining male fertility. The aim of this study was to investigate whether zinc supplementation could improve the testicular reproductive damage induced by TG toxicity in rats and to investigate its mechanism of action. The results showed that zinc sulfate (ZnSO4) could improve testicular tissue structure and semen parameters, promote testosterone synthesis, increase zinc-containing enzyme activity, increase zinc concentration in serum and testicular tissues, and maintain zinc homeostasis in male rats induced by TG toxicity. Zinc supplementation activated relevant signalling molecules in the KEAP1-NRF2/ARE pathway and alleviated TG-induced oxidative stress. Therefore, this study concluded that zinc supplementation could improve reproductive damage by regulating zinc homeostasis and the expression of genes related to oxidative stress.

Effects of dietary trace mineral levels on physiological responses, reproductive performance, litter performance, blood profiles, and milk composition in gestating sows.

This study was conducted to evaluate the effects of optimal trace mineral levels on the physiological responses, reproductive performance, litter performance, blood profiles and milk composition in gestating sows. A total of 59 multiparous sows (Yorkshire×Landrace) with similar body weight (BW), backfat thickness (BF), and parity were assigned to one of four treatments with 14 or 15 sows per treatment using a completely randomized design. The treatments were 100% (M1), 300% (M3), 600% (M6), and 900% (M9) of the National Research Council (NRC) Nutrient Requirements of Swine. During lactation period, all the sows were fed the same commercial lactation diet. No significant differences were observed in the BW, BF, reproductive performance, milk composition, or growth performance of the piglets. On day 70 of gestation, the serum zinc concentration showed a quadratic response to M6 treatment (quadratic, p<0.05). Moreover, as the dietary mineral levels increased, the zinc concentration increased linearly at 110 days of gestation (linear, p<0.05). Furthermore, copper and iron concentrations in the serum of sows at 24 h postpartum decreased linearly when high levels of dietary minerals were provided (linear, p<0.05). In the serum of piglets, serum zinc concentrations decreased linearly (linear, p<0.05), and iron concentration showed a quadratic response (quadratic, p<0.05) with an increase in trace mineral premix levels in gestation diets. The current trace mineral requirements of NRC (2012) are suitable for gestating sows, and the addition of dietary mineral levels in the gestating diet did not show any improvements during the gestation and lactation periods.

Selenium, Zinc, and Copper Status of Vegetarians and Vegans in Comparison to Omnivores in the Nutritional Evaluation (NuEva) Study.

Plant-based diets usually contain more nutrient-dense foods such as vegetables, legumes, whole grains, and fruits than a standard Western diet. Yet, the amount and especially the bioavailability of several nutrients, such as trace elements, is supposed to be lower in comparison to diets with consumption of animal-derived foods. Based on this, the Nutritional Evaluation (NuEva) study (172 participants) was initiated to compare the trace element status of omnivores, flexitarians, vegetarians, and vegans. Serum selenium, zinc, and copper concentrations and biomarkers were evaluated at baseline and during a 12-month intervention with energy- and nutrient-optimized menu plans. The implementation of optimized menu plans did not substantially influence the status of trace elements. At baseline, serum selenium biomarkers were lower in vegetarians and vegans compared to omnivores and flexitarians. The zinc intake of vegetarians and vegans was significantly lower compared to omnivores, whereas the Phytate Diet Score was increased. Accordingly, total serum zinc concentrations were reduced in vegans which was, however, only significant in women and was further supported by the analysis of free zinc. Regarding copper status, no differences were observed for total serum copper. Overall, we identified selenium and zinc as critical nutrients especially when maintaining a vegan diet.

The association between nasal mucosa bacteria and serum metals in children with nasal diseases

Allergic rhinitis (AR) and adenoid hypertrophy (AH) are common nasal diseases in children. Studies have shown that heavy metals are environmental risk factors for nasal diseases, and the pathogenic mechanisms may be related to dysregulation of nasal mucosal microbiota. However, it is unclear how heavy metal exposure relates to the nasal mucosal microbiota in nasal diseases. Therefore, we explored serum metal exposure levels and nasal mucosal microbiota composition in children with different nasal disease, and further studied the potential correlation between metal exposure and disease-related taxa. There were 64 children recruited for this study. The 23 metals concentrations in serum were measured by inductively coupled plasma mass spectrometry, and nasal mucosal bacteria was identified by 16S rRNA sequencing. Nasal diseases (AR and AH) in children were associated with alterations in the abundance and diversity of the nasal mucosal microbiota. The nasal microbiota of children with AR showed lower diversity, while the microbiota of children with AH showed higher diversity. Linear discriminant analysis Effect Size showed 108 differentially abundant taxa between AR and control groups, 35 differentially abundant taxa among large adenoid, moderate adenoid and small adenoid groups. The serum zinc concentration was negatively correlated with Pielou's eveness index and Simpson's Index in children classified by adenoid size. The spearman correlation analysis showed that multiple disease-related taxa were closely associated with metal concentrations in serum. Our findings may support a link between metal exposure and the diversity and composition of nasal bacteria in children with nasal disease, which present new evidence for the effects of metals on children health.

Relationship between PSA and Serum Zinc in BPH-Afflicted Iraqi Men

Background: Benign prostatic hyperplasia (BPH) is a common benign tumor of the prostate that becomes more common as men age. The enlarged prostate may compress the urinary tube (urethra), which runs through the middle of the prostate, preventing urine from flowing from the bladder to the outside. Complete obstruction can develop if BPH is severe enough. BPH usually appears after the age of 40 and progresses slowly. Aim of the Study: Studying the connections between serum zinc and PSA in Iraqi BPH patients is the aim of this investigation. Patients and Methods: The case-control study lasted three months, from mid-November to the end of February, at Al-Kindi Teaching Hospital and Ghazy Al-Hariri Hospital in Baghdad Governorate, Iraq. It entailed gathering 90 blood samples, which were separated into two groups. The first group (A) consisted of 60 patients with benign prostatic hyperplasia ranging in age from 45 to 80 years, while the second group (B) consisted of 30 apparently be healthy males aged 45 to 80 years. All participants in this study provided diagnose permission. Patients diagnosed with benign prostate hyperplasia had an international prostate symptom score of 18 or higher; the patient's prostate volumes (PV) were equal to or more than 25 milliliters. Radiologists with competence in the department used transabdominal ultrasound equipment manufactured in Germany by Siemens to figure out how big the prostate gland is. Both groups had their serum zinc and PSA levels measured by ELISA (Enzyme-Linked Immunosorbent Assay) assays The calculation of BMI was be calculated with the help of given standard formula. BMI = [(Weight in Kilograms / (Height in Meters x Height in Meters)]. Results: The study that the mean prostate size was elevated significantly in the BPH group (54.0 ± 8.4 cc ) as compared with the control group (19.66 ± 2.88 cc (P:0.01). There is a significant increase in the PSA concentration of benign prostatic hyperplasia patients, (3.14 ± 0.95 ng/ml), as compare with control subjects, (0.84 ± 0.10 ng/ml) (P:0.01). There is significant reduction in the serum zinc concentration of benign prostatic hyperplasia patients, (70.4 ± 9.63 ng/ml), as compare with control subjects, (99.3 ± 10.5; p≤0.01). The higher percentage of benign prostatic hyperplasia in patients above 66 years, and the lowest is in age group 45-55 years. Conclusion: Benign prostatic hyperplasia patients of all ages had considerably higher serum PSA than age-matched healthy controls. Benign prostatic hyperplasia patients of all ages had considerably lower serum zinc than age-matched healthy controls. Prostate size and PSA are greater in benign prostatic hyperplasia patients of all BMIs. Benign prostatic hyperplasia patients had significantly lower serum zinc than healthy controls of the same BMI.

Association between serum copper, zinc, and selenium concentrations and depressive symptoms in the US adult population, NHANES (2011–2016)

BackgroundEvidence suggests that alterations in serum trace element concentrations are closely associated with mental illness. However, ​studies on the relationship between serum copper, zinc, and selenium concentrations and depressive symptoms are limited and with controversial results. We aimed to investigate the association between serum concentrations of these trace elements and depressive symptoms in US adults.MethodsData from the National Health and Nutrition Examination Survey (NHANES) (2011–2016) were used in this cross-sectional study. The Patient Health Questionnaire-9 Items (PHQ-9) was employed to assess depressive symptoms. Multiple logistic regression was performed to determine the relationship between the serum concentrations of copper, zinc, and selenium and depressive symptoms.ResultsA total of 4552 adults were included. Subjects with depressive symptoms had higher serum copper concentrations (123.88 ± 1.87) than those without depressive symptoms (116.99 ± 0.86) (p < 0.001). In Model 2, weighted logistic regression analysis showed that the second (Q2) quartile of zinc concentrations (odds ratio [OR] = 1.534, 95% confident interval [CI]: 1.018 to 2.313) were significantly associated with an increased risk of depressive symptoms. Subgroup analysis revealed that the third (Q3) and fourth (Q4) quartiles of copper concentrations (Q3: OR = 2.699, 95% CI: 1.285 to 5.667; Q4: OR = 2.490, 95% CI: 1.026 to 6.046) were also positively associated with depressive symptoms in obese individuals after controlling for all confounders. However, no significant relationship between serum selenium concentrations and depressive symptoms was observed.ConclusionsObese US adults with high serum copper concentrations, as well as US adults in general with low serum zinc concentrations, were susceptible to depressive symptoms. Nevertheless, the causal mechanisms underlying these relationships need to be further explored.

Evaluation of Serum Zinc Levels in Type 2 Diabetes Mellitus Patients and its Correlation with Glycosylated Hemoglobin and Overt Diabetic Complications

Abstract Background: Diabetes mellitus is the most prevalent disease in worldwide. It is characterized by hyperglycemia, insulin resistance, and relative insulin deficiency. The goal of this study is to estimate serum zinc levels in type 2 diabetes mellitus patients and correlation between serum zinc levels, glycosylated hemoglobin (HbA1c) levels, and complications in type 2 diabetes patients. Aims and Objectives: To estimate serum zinc levels in patients with type 2 diabetes mellitus, study correlation between serum zinc levels and HbA1c levels, and compare serum zinc levels, HbA1c, and overt diabetic complications. Materials and Methods: This prospective observational study was conducted in a tertiary center. Diagnosed 100 cases of type 2 diabetes mellitus were taken and detailed examination was done. Serum zinc levels were estimated by absorption spectrophotometry, and HbA1c levels were estimated using high-performance liquid chromatography method. Statistical software STATA version 14.0 was used for data analysis. Results: The mean age of the patients was 49.6 ± 11.18 years with a male: female ratio of 2.1:1. Mean serum zinc levels in males with macrovascular complications were 43.65 ± 14.55 μg/dl, significantly lower than the mean serum zinc levels in females 67.31 ± 18.84 μg/dl, P &lt; 0.0001. Serum zinc levels were low in patients with microvascular complications and macrovascular complications, which were statistically significant P &lt; 0.0001 and an inverse correlation was observed between HbA1c levels and serum zinc levels (r = −0.4456, P &lt; 0.0001). Conclusion: Low serum zinc levels associated with micro- and macrovascular complications of diabetes mellitus. This study revealed an inverse relationship between HbA1c and serum zinc concentration in type 2 diabetes mellitus patients.

Serum zinc and periodontitis in non-diabetic smoking and non-smoking adults: NHANES 2011-2014.

This study aimed to evaluate the association of serum zinc with periodontitis in non-diabetics based on smoking status, using a representative sample of adults in the United States. A total of 1051 participants who underwent full-mouth periodontal examination and serum zinc testing were enrolled from NHANES 2011 to 2014. The covariate-adjusted association of serum zinc concentrations with periodontitis was explored using multivariable logistic regression, restricted cubic spines, and sensitivity analysis. The mean age of the 1051 adults was 54.5 years, 59.37% were male, and 20.65% had periodontitis. Analysis of the results showed that serum zinc was associated with periodontitis. The overall adjusted odds of periodontitis were 9% (odds ratio [OR]: 0.91; 95% confidence interval [CI]: 0.83-1.00) and 14% (OR: 0.86; 95% CI: 0.75-0.98) for nonsmokers and smokers, respectively. Smokers with T3 serum zinc exhibited a 53% reduction in the fully adjusted odds of periodontitis (OR: 0.47; 95% CI: 0.23-0.96), when compared to the reference group (T1 serum zinc), with serum zinc as the categorical variable. Serum zinc levels were associated with the risk of periodontitis in non-diabetic smokers but not non-smokers.

Association of Serum Concentrations of Copper, Selenium, and Zinc with Grip Strength Based on NHANES 2013-2014.

Increasing evidence has found metals to be strongly associated with muscle strength, but the correlations between serum copper (Cu), selenium (Se), and zinc (Zn) with grip strength in adult populations have not yet been established. We examined the linear and non-linear associations between these three metals and grip strength via multiple linear regression and restricted cubic spline (RCS) regression using data from the National Health and Nutrition Examination Survey (NHANES) 2013-2014. A higher concentration of serum Cu was monotonically linked with lower grip strength [β = - 0.004 m2 (95% CI: - 0.005, - 0.002)], and serum Zn was positively associated with grip strength [β = 0.004 m2 (95% CI: 0.002, 0.006)]. We observed a positive association between serum Se and grip strength in the unadjusted model but not in covariate-adjusted models. Interestingly, the results of RCS regression showed that serum Cu had an L-shaped non-linear association with grip strength in all participants and subgroups. We further found a linear-increased trend between serum Zn and the grip strength in all participants. There were also non-linear associations that varied across different subgroups. Taken together, serum Cu and Zn were significantly associated with grip strength, while Se was not. This study offers new evidence to help formulate a reference concentration range for serum Cu and Zn.

Recommended reference intervals for copper and zinc in serum using the US National Health and Nutrition Examination surveys (NHANES) data

Background and AimsIn view of the wide variations in reference intervals (RIs) for copper and zinc concentrations in serum, this study was designed to derive appropriate RIs that could be routinely adopted in other laboratories, so allowing better interpretation of results. A secondary aim was to assess the effects of several variables on serum concentrations of copper and zinc. Materials and MethodsData from over 21,000 individuals were downloaded from four National Health and Nutrition Examination Surveys conducted by the US Centers for Disease Control and Prevention. After controlling for the effects of several variables, age and gender-related RIs were calculated. ResultsA comprehensive list of reference intervals of copper and zinc in serum is provided.Serum copper concentrations were affected by age, gender, ethnicity, pregnancy, use of oral contraceptive pill, health status and smoking (in males). Serum zinc concentrations were affected by gender, age, fasting, ethnicity, serum albumin concentration, health status (in males), time of venipuncture and pregnancy. ConclusionReliable RIs for copper and zinc in serum were derived. As analytical accuracy and precision were assured and optimal sample collection protocols were followed, these RIs can be transferred for routine use in other clinical biochemistry laboratories with good analytical performance in external quality assurance schemes.

Iatrogenic Copper Deficiency: Risks and Cautions with Zinc Prescribing.

Copper deficiency resulting from prescribing zinc in high doses is a rare but life-changing diagnosis that is frequently overlooked. The aim of this study is to gauge how often zinc-induced copper deficiency is missed, to raise awareness of the condition and to stress the need for guidelines for prescribing zinc. Suspected cases of zinc-induced copper deficiency were retrospectively obtained by selecting those patients with hyperzincaemia and hypocupraemia from the database of the Scottish Trace Element Laboratory. Case records were reviewed to determine the validity of the suspected diagnosis. After exclusions, 23 instances of high serum zinc and low serum copper concentrations were found. A positive diagnosis of zinc-induced copper deficiency was made in 14 patients of which 7 (50%) were previously undiagnosed. Serum zinc and copper concentrations are rarely measured in patients prescribed zinc and so the vast majority of cases of zinc-induced copper deficiency are likely to be undiagnosed. We recommend the current official advice on the dose and frequency of zinc administration is revised in order to limit, and potentially eradicate, the condition.

Resting saliva volume as a risk factor for hypogeusia: A retrospective study

ObjectivesThe causes of hypogeusia include zinc deficiency, systemic illness, and consumption of drugs. Notably, patients with oral cavity diseases such as oral candidiasis and salivary gland hypofunction may present with risk factors that remain unreported. Hence, this study aimed to investigate the relationship between age, sex, smoking status, serum zinc concentration, oral candidiasis, saliva volume, and taste function in patients with hypogeusia. Subjects and MethodsOverall, 335 participants who complained of taste abnormalities underwent a taste test. Based on the recognition threshold value, the participants were classified as normal individuals (recognition threshold of 1 and 2) and patients with hypogeusia (recognition threshold of ≥3). The clinical characteristics, including resting saliva volume (RSV) and stimulated saliva volume (SSV), were compared, and a multivariate logistic regression analysis focusing on RSV was performed. ResultsPatients with hypogeusia had a lower RSV than normal individuals for all tastes, but not for SSV. Based on the results of regression analysis, RSV was identified as an independent predictor of hypogeusia for salty and bitter tastes. Moreover, the proportion of patients with decreased RSV increased as the number of taste qualities exceeding the reference recognition threshold increased. Furthermore, a decrease in RSV was associated with an increase in the recognition threshold for salty and bitter tastes. ConclusionsBased on the results of the present study, moisturizing the oral cavity may be useful against hypogeusia.

Determination of serum zinc concentration in normal healthy men &amp; type II diabetes mellitus patients.

Body zinc content is regulated by the homeostatic mechanism, which regulate zinc absorption and excretion depending on its body requirements. The function of cells and tissues enzymes is depend zinc content &amp; over 70 human body enzymes with which zinc is associated. Pervious studies show that some trace elements like magnesium, zinc, manganese &amp; selenium may play important role in action of insulin hormone, including activation of insulin receptor sites. The aim of the study is to determine the serum level of zinc in normal healthy men &amp; diabetes mellitus type II patients. A cross sectional study was done in Tikrit teaching hospital from beginning of January to end of December 2010. The study conducted on 50 type 2 diabetic male patients was participated in the study. While, 30 normal healthy men age matched (aged 55 to 60 years) were included as a control. Serum zinc was measured for control healthy non diabetic subjects &amp; diabetic type 2 patients. There were non significant differences regarding age. However there is significant increase in BMI of diabetic patients as compare with control men. Fasting serum glucose was significantly higher in DM patients as compare with control subjects. Moreover, there is significant reduction in serum zinc in diabetic patients (89.35 ± 19.23 µg/dl) as compare with normal health subjects (135 ± 35.18 µg/dl). In diabetic patients, there is significant negative correlation between fasting blood sugar &amp; serum zinc (r= - 0.37). In present study conclude that there is a significant reduction in serum zinc in diabetic patients. The present study recommend that diabetic type II patients should be encourage to eat diet rich in zinc or take zinc supplement.

Metal Exposure and Risk of Parkinson Disease: A Systematic Review and Meta-Analysis.

Metal exposure has been suggested as a possible environmental risk factor for Parkinson disease (PD). We searched the PubMed, EMBASE, and Cochrane databases to systematically review the literature on the relationship between metal exposure and PD risk and to examine the overall quality of each study and the exposure assessment method. A total of 83 case-control studies and 5 cohort studies published duringthe period 1963-July 2021 were included, of which 73 were graded as being of low or moderate overall quality. Investigators in 69 studies adopted self-reported exposure and biomonitoring after disease diagnosis for exposure assessment approaches. The meta-analyses showed that concentrations of copper and iron in serum and concentrations of zinc in either serum or plasma were lower, while concentrations of magnesium in CSF and zinc in hair were higher, among PD cases as compared with controls. Cumulative lead levels in bone were found to be associated with increased risk of PD. We did not find associations between other metals and PD. The current level of evidence for associations between metals and PD risk is limited, as biases from methodological limitations cannot be ruled out. High-quality studies assessing metal levels before disease onset are needed to improve our understanding of the role of metals in the etiology of PD.

5575938 DIETARY PATTERN, SOCIO-DEMOGRAPHIC CHARACTERISTICS AND NUTRITIONAL STATUS OF PREGNANT WOMEN ATTENDING BARAU DIKKO TEACHING HOSPITAL AND THE NEED TO DEVELOP RECOMMENDED DIETARY ALLOWANCE AND DIETARY REFERENCE INTAKES FOR SICKLE CELL DISEASE PATIENTS

Background: Micronutrient deficiencies, particularly lack of vitamin A, iron and iodine have severe adverse effect on women and children (Lopriore and Muehlhoff, 2005). More resources need to be dedicated to research so as to establish a standard and specific recommended dietary allowance (RDA’s) for SCD patients, like the one developed for the general population (Beatrice et al, 2010). Lack of screening plays a major part in excessive mortality and a lot of the life threatening complications of SCD among under 5 children have well established nutritional basis. Impairment of immune response among children with SCD is largely associated with poor nutritional status and this drives infection related mortality. Nutritional status has been shown to be critical in SCD severity, weight for age score was shown to significally predict hospitalization in SCD. (Mohammad et al, 2001). In this study, the dietary pattern, nutritional status and micronutrient status of pregnant women attending Barau Dikko Teaching Hospital (BDTH), Kaduna were assessed. Aims: Assess the dietary pattern and nutritional status of pregnant women attending BDTH, Kaduna Determine the micronutrient status (Vitamin A, Iron and Zinc) during pregnancy To state the link between nutrition and SCD Methods: 180 apparently healthy pregnant women attending antenatal clinic at BDTH were involved in the research. Informed consent was sought from all pregnant women. Food frequency questionnaire (FFQ) was used to assess food intake, mid-upper arm circumference (MUAC) was used to assess nutritional status, serum zinc and iron content were analysed using atomic absorption spectrophotometry (AAS) and vitamin A was analysed spectrophotormetrically. Data were analysed and presented using the statistical package for social sciences (SPSS) software version 20.0 for descriptive statistics, statistical significance was set at p<0.05. Results is presented as mean ± SD. Results: The age range of the pregnant women was mostly between 30-34 years. Most women had secondary school education. They were predominantly full time house wives. Maize was the most commonly food consumed by 69/180 pregnant women (38.5%). 140 pregnant women (78%) have normal serum iron levels while 40 pregnant women (22%) have low values (<10.74 µmol/L), though iron supplementation was given. Serum zinc levels were low (7.36 ± 0.31 1st trimester, 7.28 ± 0.37 2nd trimester, 7.18 ± 0.56 3rd trimester), serum vitamin A levels (1.67 ± 0.16 1st trimester, 1.53 ± 0.12 2nd trimester, 1.49 ± 0.11 3rd trimester). Severe acute malnutrition mainly occurred in the third trimester, 36/180 (20%) pregnant women. Conclusion: This study has established that higher percentage of malnutrition occurred in the third trimester (20%) pregnant womwen which may be due to the fœtus drawing a lot of nutrient from the mother. The dietary pattern showed a high frequency of consumption of carbohydrate food groups. Anthropometry of the pregnant women showed severe acute malnutrition (20%) in the 3rd trimester. The nutritional status of pregnant women is associated with birth weight of the baby. Baby given birth to by poorly nourished mother has a lower body weight as compared to the baby of better nourished mothers (Gashew et al 2019). Research have shown weather a pregnant woman is sickle or not there is an adverse effect on the new born if she is malnourished and also great consequences if the newborn is sikcle (Brown et al, 1994).