Displaying publications 21 - 40 of 78 in total

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  1. Leong CF, Cheong SK, Hamidah NH, Ainoon O, Kannaheswary Y
    Malays J Pathol, 1998 Dec;20(2):103-8.
    PMID: 10879271
    A 40-day-old baby girl presented with intermittent fever, lymphadenopathy, massive hepatosplenomegaly, progressive pancytopenia and features of disseminated intravascular coagulopathy. A bone marrow aspiration was performed and showed florid histiocytic proliferation with marked hemophagocytosis. Based on the diagnostic guideline for Hemophagocytic Lymphohistiocytosis proposed by the Familial Hemophagocytic Lymphohistiocytosis Study Group of Histiocyte Society, this patient has fulfilled most of the criteria. We have also found that serum ferritin and lactate dehydrogenase to be very high in this patient. It remains uncertain whether the disorder is reactive or neoplastic.
    Matched MeSH terms: Ferritins/blood*
  2. Nadarajan VS, Eow GI
    Malays J Pathol, 2002 Dec;24(2):99-102.
    PMID: 12887168
    Iron deficiency is a major complication of regular blood donation as a result of regular iron loss from each donated blood unit. Ninety-two regular blood donors and 95 first time blood donors attending a hospital-based blood transfusion centre were assessed as to their haematological and iron status by blood counts and serum ferritin levels as an indicator of iron stores. All donors had passed the haemoglobin-screening test using a copper sulphate method prior to blood donation. Ferritin levels were found to be significantly lower among regular blood donors (47.8 mmol/L) as compared to first time blood donors (94.2 mmol/L). Iron deficiency as observed by low ferritin levels was seen in 7.4% of all first time donors as compared to 17.4% in regular donors. Male first time donors showed a low prevalence of iron deficiency but the prevalence significantly increased with regular blood donation. Female first time and regular blood donors however did not show any significant differences in prevalence of iron deficiency, with both groups exhibiting prevalence rates similar to male regular donors. The association between haemoglobin levels and iron deficiency was poor and the copper sulphate-screening test was found insensitive to anaemia with many donors passing the test and donating blood despite being anaemic. It is concluded that a high prevalence of iron deficiency is present among regular male blood donors and all female donors. Besides, the use of the copper sulphate screening test as a sole criterion for anaemia screening should be reviewed. Ferritin measurements should be included in the routine assessment of blood donors especially among regular blood donors.
    Matched MeSH terms: Ferritins/blood
  3. Goh TH, Hariharan M
    Contraception, 1983 Oct;28(4):329-36.
    PMID: 6667621
    Blood haemoglobin and serum ferritin levels were measured at the initial visit and 12 months following sterilization and IUD insertion. Ferritin levels were unaltered in Progestasert users after 12 months but haemoglobin values increased though not significantly. Ferritin levels fell in Multiload Cu 250 users and in sterilized women; haemoglobin levels were also observed to fall but significantly only in the latter group. Iron-deficiency anaemia was prevalent at initial contact and there appeared to be an increased risk subsequently in Multiload Cu 250 users and in those who were sterilized. Screening and monitoring for anaemia is indicated. From the viewpoint of iron status, the Progestasert is preferable to the Multiload Cu 250 but it suffers the major disadvantages of needing frequent replacement and of causing menstrual disturbances which might compromise its acceptability. Menstrual blood loss studies may help explain why anaemia develops after sterilization.
    Matched MeSH terms: Ferritins/blood*
  4. Wong CT, Saha N
    Ann Nutr Metab, 1985;29(5):267-73.
    PMID: 4051449
    The concentrations of non-haem iron, ferritin and ferritin-iron were measured in the livers of 137 adults and children collected at necropsy. The concentrations of non-haem and ferritin iron were found to be 146.6 +/- 95.2 micrograms/g and 61.6 +/- 32.4 micrograms/g, respectively, in males and 108.0 +/- 61.7 micrograms/g and 60.6 +/- 26.4 micrograms/g, respectively, in females. The values for males in Singapore were lower than those reported in developed Western countries. No correlation was observed between storage iron and age, or ferritin concentration and age. Concentrations of non-haem iron and ferritin were similar for persons dying from accident and coronary heart disease. The non-haem iron concentration in Chinese (187.9 +/- 101.0 micrograms/g) was significantly greater than that in Indians (103.1 +/- 65.8 micrograms/g), while the ferritin concentration in Chinese (6.18 +/- 2.37 mg/g) was significantly greater than either Malays (3.81 +/- 1.8 mg/g) or Indians (3.52 +/- 1.6 mg/g). A significant positive correlation was observed between the non-haem iron and ferritin and also ferritin-iron in Chinese males (r values of 0.678 and 0.598, respectively) and Indian males (r values of 0.576 and 0.612, respectively). However, the correlation between these indices was not significant in the case of Malay males. In premenopausal women the non-haem iron correlated well with ferritin (r = 0.737) and ferritin iron (r = 0.826) while the correlation was lacking in postmenopausal women.
    Matched MeSH terms: Ferritins/metabolism*
  5. Giemza-Stokłosa J, Islam MA, Kotyla PJ
    Curr Pharm Des, 2019;25(27):2909-2918.
    PMID: 31686632 DOI: 10.2174/1381612825666190709202804
    BACKGROUND: Ferritin is a molecule that plays many roles being the storage for iron, signalling molecule, and modulator of the immune response.

    METHODS: Different electronic databases were searched in a non-systematic way to find out the literature of interest.

    RESULTS: The level of ferritin rises in many inflammatory conditions including autoimmune disorders. However, in four inflammatory diseases (i.e., adult-onset Still's diseases, macrophage activation syndrome, catastrophic antiphospholipid syndrome, and sepsis), high levels of ferritin are observed suggesting it as a remarkable biomarker and pathological involvement in these diseases. Acting as an acute phase reactant, ferritin is also involved in the cytokine-associated modulator of the immune response as well as a regulator of cytokine synthesis and release which are responsible for the inflammatory storm.

    CONCLUSION: This review article presents updated information on the role of ferritin in inflammatory and autoimmune diseases with an emphasis on hyperferritinaemic syndrome.

    Matched MeSH terms: Ferritins/blood*
  6. Roth TL, Reinhart PR, Kroll JL
    J. Zoo Wildl. Med., 2017 09;48(3):645-658.
    PMID: 28920821 DOI: 10.1638/2017-0010.1
    The aim of this study was to determine if ferritin is a reliable biomarker of iron overload disorder (IOD) progression and hemochromatosis in the Sumatran rhinoceros (Dicerorhinus sumatrensis) by developing a species-specific ferritin assay and testing historically banked samples collected from rhinos that did and did not die of hemochromatosis. Ferritin extracted from Sumatran rhino liver tissue was used to generate antibodies for the Enzyme Immunoassay. Historically banked Sumatran rhino serum samples (n = 298) obtained from six rhinos in US zoos (n = 290); five rhinos at the Sumatran Rhino Conservation Centre in Sungai Dusun, Malaysia (n = 5); and two rhinos in Sabah, Malaysia (n = 3) were analyzed for ferritin concentrations. Across all US zoo samples, serum ferritin concentrations ranged from 348 to 7,071 ng/ml, with individual means ranging from 1,267 (n = 25) to 2,604 ng/ml (n = 36). The ferritin profiles were dynamic, and all rhinos exhibited spikes in ferritin above baseline during the sampling period. The rhino with the highest mean ferritin concentration did not die of hemochromatosis and exhibited only mild hemosiderosis postmortem. A reproductive female exhibited decreases and increases in serum ferritin concurrent with pregnant and nonpregnant states, respectively. Mean (±SD) serum ferritin concentration for Sumatran rhinos in Malaysia was high (4,904 ± 4,828 ng/ml) compared to that for US zoo rhinos (1,835 ± 495 ng/ml). However, those in Sabah had lower ferritin concentrations (1,025 ± 52.7 ng/ml) compared to those in Sungai Dusun (6,456 ± 4,941 ng/ml). In conclusion, Sumatran rhino serum ferritin concentrations are dynamic, and increases often are not associated with illness or hemochromatosis. Neither a specific pattern nor the individual's overall mean ferritin concentration can be used to accurately assess IOD progression or diagnose hemochromatosis in this rhino species.
    Matched MeSH terms: Ferritins/blood*
  7. Viprakasit V, Ibrahim H, Ha SY, Ho PJ, Li CK, Chan LL, et al.
    Int J Hematol, 2011 Mar;93(3):319-328.
    PMID: 21374076 DOI: 10.1007/s12185-011-0789-8
    Although thalassaemia is highly prevalent in the Asia-Pacific region, clinical data on efficacy and safety profiles of deferasirox in patients from this region are rather limited. Recently, data from the multicentre Evaluation of Patients' Iron Chelation with Exjade (EPIC) study in 1744 patients with different anaemias has provided an opportunity to analyse 1115 thalassaemia patients, of whom 444 patients were from five countries in the Asia-Pacific region (AP) for whom thalassaemia management and choice of iron chelators were similar. Compared to the rest of the world (ROW), baseline clinical data showed that the AP group appeared to be more loaded with iron (3745.0 vs. 2822.0 ng/ml) and had a higher proportion on deferoxamine monotherapy prior to the study (82.9 vs. 58.9%). Using a starting deferasirox dose based on transfusional iron intake and tailoring it to individual patient response, clinical efficacy based on serum ferritin reduction in AP and ROW thalassaemia patients was similar. Interestingly, the AP group developed a higher incidence of drug-related skin rash compared to ROW (18.0 vs. 7.2%), which may indicate different pharmacogenetic backgrounds in the two populations. Our analysis confirms that, with appropriate adjustment of dose, deferasirox can be clinically effective across different regions, with manageable side effects.
    Matched MeSH terms: Ferritins/blood
  8. George E, Wong HB, George R, Ariffin WA
    Singapore Med J, 1994 Feb;35(1):62-4.
    PMID: 8009283
    Patients on a moderate red cell transfusion programme have iron overload where the concentrations of the serum ferritin were inappropriate to increases in the transfusion load as a result of limitations of apoferritin synthesis and conversion of ferritin into haemosiderin. This study confirms the limitations for the use of estimations of the serum ferritin to evaluate the iron status in patients with expected high overload as would be seen in patients on many years of maintenance red cell transfusions in the absence of iron chelation therapy. Poor compliance, inadequate dosage of Desferal (deferoxamine), and the late initiation of iron chelation therapy were factors that were considered in the patients with failure of response to iron chelation.
    Matched MeSH terms: Ferritins/blood*
  9. George E, Faridah K, Sivagengei K
    Singapore Med J, 1988 Feb;29(1):45-7.
    PMID: 3406766
    83 Malays with HbE beta-thalassaemia who were not transfusion dependent were investigated. 79 persons showed no beta0 formation indicating the predominant gene in Malays with HbE beta-thalassaemia was beta0. HbF assays showed levels that were similar to transfusion dependent patients. Further studies are necessary to determine the presence of the alpha, (alpha+) gene Interacting with HbE and beta0 to produce the milder phenotype of HbE beta-thalassaemla.
    Matched MeSH terms: Ferritins/blood
  10. Porter JB, El-Alfy M, Viprakasit V, Giraudier S, Chan LL, Lai Y, et al.
    Eur J Haematol, 2016 Jan;96(1):19-26.
    PMID: 25691036 DOI: 10.1111/ejh.12540
    Plasma markers in addition to serum ferritin (SF) may be useful for the assessment of iron overload; however, predictive utility may differ depending on underlying, transfusion-dependent, anemias.
    Matched MeSH terms: Ferritins/blood*
  11. Thambiah SC, George E, Samsudin IN, Hong LH, Chuo LL, Ramli N, et al.
    Natl Med J India, 2016 May-Jun;29(3):136-140.
    PMID: 27808061
    BACKGROUND: The principal cause of iron overload in patients with haematological malignancies is recurrent red cell transfusions for anaemia. The serum ferritin level reflects the iron burden in the body, in the absence of inflammation or liver disease. In Malaysia, data are lacking on the association between pre-transplant serum ferritin levels and outcome after allogeneic haemopoietic stem cell transplant.

    METHODS: We did a cross-sectional study using retrospective data of 106 post-allogeneic haemopoietic stem cell transplant patients (HLA-matched sibling) with haematological malignancies at Hospital Ampang to determine the relationship between pre-transplant serum ferritin levels and post-transplant outcome, post-transplant complications and survival time. Patients were divided into two groups according to the iron status: serum ferritin level >1000 μg/L (iron overload) and <1000 μg/L.

    RESULTS: The median age for patients was 30.5 (18-58) years. The median pre-transplantation serum ferritin level and the prevalence of pre-transplantation iron overload were 2423 (408.2-7664) μg/L and 87.5%, respectively. No significant association was found between iron status and demographic factors, type of haematological malignancy and post-transplant complications. Although insignificant, patients with iron overload had a shorter survival time (36 months) compared to those with no iron overload (40 months). There was also no significant association between the iron status and post-transplant outcome. Significant post-transplant complications associated with post-transplant outcome were the need for total parenteral nutrition (TPN) (p=0.014) and chronic graft-versus-host disease (GVHD) (p=0.008). Similarly, significant associations were found between age group (p=0.003), TPN (p=0.035) and chronic GVHD (p=0.012) with survival time using Kaplan-Meir analysis. However, after Cox regression, only age group was found to be significantly associated with survival time (p=0.014).

    CONCLUSION: Serum ferritin is an acute phase reactant and its levels increase in the presence of tissue necrosis and inflammation. Both these events occur in haematological malignancies. Although serum ferritin level is a non-invasive, relatively cost-effective, widely available and practical indicator of iron status, it is not specific to iron overload. Therefore, a true association between the serum ferritin level and iron burden is problematic in patients with haematological malignancies.
    Matched MeSH terms: Ferritins/blood*
  12. Kong MH, Goh BS, Hamidah A, Zarina AL
    Med J Malaysia, 2014 Feb;69(1):9-12.
    PMID: 24814621 MyJurnal
    OBJECTIVE: This study aimed to evaluate the prevalence of sensorineural hearing loss (SNHL) in β-thalassaemia patients treated with Desferrioxamine (DFO) and determine the correlation of SNHL with average daily DFO dosage, serum ferritin level and Therapeutic index (T.I).

    METHODS: This is a cross sectional descriptive study carried out for a period of 14 months and 54 patients were recruited. The recruited patients are transfusion dependant β- thalassaemia patient aged 3 years and above treated with DFO. An interview, clinical examination and hearing assessment, which included tympanogram, and Pure Tone Audiometry (PTA) or behaviour alaudiometry were performed. The data on age started on DFO, average daily DFO, duration of DFO intake, serum ferritin past 1 year and Therapeutic Index (T.I) were obtained from patients' case notes.

    RESULTS: The prevalence of SNHL was 57.4% and majority has mild hearing loss (93.6%). Fourteen patients (25.9%) have bilateral ear involvement and as many as 17 patients (31.5%) have SNHL in either ear. A total of 23 patients (42.6%) have normal hearing level. Although the prevalence of SNHL was 57.4%, only a small percentage of the patient noticed and complained of hearing loss (11.1%). There is no association between age started on DFO, average daily DFO and duration of DFO intake with normal hearing group and those patients with SNHL. Positive correlation was seen between average daily DFO with 2000 and 4000Hz on PTA in the left ear and between serum ferritin level past 1 year with 4000 and 8000Hz in the right ear and 8000Hz in the left ear. No significant correlation was seen between T.I on PTA.

    CONCLUSION: The prevalence of SNHL from hearing assessment is high in β-thalassaemia patients in this study. However, it is manifested clinically in a smaller percentage. We suggest a baseline hearing assessment should be carried on all β-thalassaemia patients prior to DFO chelation therapy.
    Matched MeSH terms: Ferritins
  13. Lee KW, Yusof Khan AHK, Ching SM, Chia PK, Loh WC, Abdul Rashid AM, et al.
    Front Neurol, 2020;11:579070.
    PMID: 33123082 DOI: 10.3389/fneur.2020.579070
    Background: As the world witnessed the devastation caused by the coronavirus disease 2019 (COVID-19) outbreak, a growing body of literature on COVID-19 is also becoming increasingly available. Stroke has increasingly been reported as a complication of COVID-19 infection. However, a systematic synthesis of the available data has not been conducted. Therefore, we performed a systematic review and meta-analysis of currently available epidemiological, clinical, and laboratory data related to both stroke and COVID-19 infection. Methods: We systematically searched Medline, Cinahl, and PubMed for studies related to stroke and COVID-19 from inception up to June 4, 2020. We selected cohort studies, case series, and case reports that reported the occurrence of stroke in COVID-19 patients. A fixed-effects model was used to estimate the pooled frequency of stroke in COVID-19 patients with a 95% confidence interval (CI). Results: Twenty-eight studies were included in the systematic review and seven studies for the meta-analysis. The pooled frequency of stroke in COVID-19 patients was 1.1% (95% CI: 0.8, 1.3). The heterogeneity was low (I2 = 0.0%). Even though the frequency of stroke among patients having COVID-19 infection was low, those with concomitant COVID-19 infection and stroke suffered from a more severe infection and eventually had a poorer prognosis with a higher mortality rate (46.7%) than COVID-19 alone. Many COVID-19 patients shared the common traditional risk factors for stroke. We noted that ischemic stroke involving the anterior circulation with large vessels occlusion is the most common type of stroke with more strokes seen in multi-territorial regions, suggesting systemic thromboembolism. An elevated level of D-dimers, C-reactive protein, ferritin, lactic acid dehydrogenase, troponin, ESR, fibrinogen, and a positive antiphospholipid antibody were also noted in this review. Conclusions: The occurrence of stroke in patients with COVID-19 infection is uncommon, but it may pose as an important prognostic marker and indicator of severity of infection, by causing large vessels occlusion and exhibiting a thrombo-inflammatory vascular picture. Physicians should be made aware and remain vigilant on the possible two-way relationship between stroke and COVID-19 infection. The rate of stroke among patients with COVID-19 infection may increase in the future as they share the common risk factors.
    Matched MeSH terms: Ferritins
  14. Liew Kean Yew, Suraya Hanim Abdullah, Beh Ting Yuen
    MyJurnal
    Introduction: Secondary Hemophagocytic Lymphohistiocytosis (HLH) is a condition seen in severe dengue that can be potentially fatal. Timely management using HLH-directed treatment such as steroids or etoposide have been seen to improve the outcome of patients however there is no protocol on how to manage the disease. Two criteria commonly used to guide the direction of treatment are namely the HLH-2004 criteria and the Hscore; with the latter being used more often. The best cut-off H score is 169 corresponding to a sensitivity of 93%, specificity of 86% and accurate classification of 90% of the patients. We described of five patients diagnosed with severe dengue compli-cated with HLH. Methods: 5 cases that were diagnosed with severe dengue with secondary HLH and received dexa-methasone were reviewed retrospectively and clinical data extracted. Results: All patients had fever beyond critical or leaking phase. Four out of five cases had Hscore higher than 169 and had a mean score of 181 with only one bone marrow performed. Three patients had concurrent leaking and bleeding and three patients had fast progression of se-vere transaminitis during the critical phase. The mean peak ferritin level was 21077 micro/L. The only bone marrow aspiration done revealed increased macrophages and hemophagocytic activity. All patients received a short course of dexamethasone and discharged well. Conclusion: Short course dexamethasone is effective in treatment of HLH in dengue despite the concerns of administration of steroids in bleeding dengue patient. Secondary HLH in dengue remains a clinical diagnosis with no conclusive diagnostic criteria. It should be suspected in a severe dengue patient with hyperferritinemia and persistent fever. Technical difficulty of performing bone marrow during severe dengue makes conclusive diagnosis remains elusive.
    Matched MeSH terms: Ferritins
  15. Mohd Rosli RR, Norhayati MN, Ismail SB
    PeerJ, 2021;9:e10527.
    PMID: 33520436 DOI: 10.7717/peerj.10527
    Background: Iron deficiency anemia (IDA) is commonly treated with iron formulations. Despite the expanding acceptance of iron polymaltose complex (IPC) among clinicians, there is sparse and contradictory evidence regarding its efficacy in the management of IDA in children. This systematic review and meta-analysis aimed to assess the effectiveness of IPC in the treatment and prevention of IDA in children.

    Methods: We searched the Cochrane Central Register of Controlled Trials, MEDLINE and Epistemonikos for all randomized control trials (RCTs) comparing oral IPC with standard oral iron supplementation for the treatment or prevention of IDA in children. We independently screened the titles and abstracts of identified trials before the full text of relevant trials was evaluated for eligibility. We then independently extracted data on the methods, interventions, outcomes, and risk of bias from the included trials. A random-effects model was used to estimate the risk ratios and mean differences with 95% confidence intervals.

    Results: Eight trials comprising 493 randomized patients were included and analyzed using three comparison groups. The comparison group of which was used to evaluate IPC and ferrous sulphate (FS) for treatment of IDA showed that IPC is less effective in increasing Hb (MD -0.81, 95% CI -1.08 to -0.53; I2 = 48%, P 

    Matched MeSH terms: Ferritins
  16. Loh, S. P., Khor, G. L.
    MyJurnal
    Objective: To assess the prevalence of iron deficiency, anaemia and iron deficiency anaemia (IDA) in women aged 20-40 years and its association with iron intake. Methods: A total of 388 women were recruited from universities and work sites in Kuala Lumpur and its suburbs. The subjects comprised 135 Malays, 130 Chinese and 123 Indians. Dietary intake was estimated using a single 24-hour food recall and a semi-quantitative food frequency questionnaire. Haemoglobin (Hb), haematocrit (hct), mean corpuscular volume (MCV) and serum ferritin were determined. Results: The prevalence of anaemia (Hb
    Matched MeSH terms: Ferritins
  17. Getta HA, Ahmad HA, Rahman HS, Ahmed GA, Abdullah R
    Patient Prefer Adherence, 2018;12:939-944.
    PMID: 29910607 DOI: 10.2147/PPA.S157221
    Introduction: It has been suggested that blood donation reduces risks of developing cardiovascular diseases such as heart failure, atherosclerosis, and stroke. Although there are known benefits of blood donation, the inclination of people of the Kurdistan Region of Iraq to donate blood is not known. Therefore, the aim of this study was to determine demograpic and blood biochemical profiles of regular and first-time blood donors in the Sulaimani province of North Iraq.

    Methods: A cross-sectional study was conducted at the Sulaimani Blood Bank, during the period of April 1, 2016 to March 28, 2017, on convenient samples of 100 regular and 100 first-time blood donors. Donor particulars were obtained from blood bank records. The cholesterol, triglyceride, low-density lipoprotein, ferritin, vitamin D3, and uric acid concentrations of blood samples were determined.

    Results: The main reason for blood donation by regular blood donors was headache (45%), while for the first-timers it was to help relatives (31%). The low-density lipoprotein and ferritin concentrations were significantly (p=0.001) lower in the blood of regular donors than first-timers.

    Conclusion: The study shows that regular blood donation is beneficial for the maintenance of health of donors.

    Matched MeSH terms: Ferritins
  18. Islam MA, Kamal MA, Md Zulfiker AH, Gan SH
    Curr Pharm Des, 2019;25(27):2907-2908.
    PMID: 31621552 DOI: 10.2174/138161282527191007151037
    Matched MeSH terms: Ferritins
  19. Yang ES, Kim YS, Park CY, Kim JD, Song HJ
    Sains Malaysiana, 2015;44:1653-1659.
    Anemia of chronic disease (ACD) frequently occurred in patients with chronic inflammatory diseases and can be treated
    by treating the underlying disease. On the other hand, iron-deficiency anemia (IDA), the most common type of anemia,
    occurred with iron loss or when the iron requirement of the body was increased. Since the treatment methods for ACD
    and IDA differ, it is important to clinically distinguish between the two types of anemia. In this study, we investigated and
    evaluated the performance of a number of biomarkers, including ferritin, soluble transferrin receptor (sTfR), hepcidin,
    C-reactive protein (CRP) and combination markers containing ferritin for the diagnosis of IDA using serum samples from
    Korean patients (80 ACD and 48 IDA Korean patients). Among the single markers, ferritin exhibited the best performance
    with 98.58% AUC and 97.50% sensitivity. In this study, a combination of two biomarkers was used to differentially
    diagnose IDA and ACD. Among the combination markers, ferritin + sTfR showed the best performance with 99.51% AUC
    and 98.75% sensitivity. We found that the ferritin + sTfR combination showed the best diagnostic performance with
    1.25% higher SN than ferritin alone. Moreover, it also showed 10% better diagnostic performance than the single ferritin
    marker within the data range where the distinction between ACD and IDA is unclear. We propose that using combination
    markers containing ferritin may diagnose IDA more accurately and facilitate the determination of the appropriate anemia
    treatment to expedite patient recovery.
    Matched MeSH terms: Ferritins
  20. Tan K, Zhang H, Lim LS, Ma H, Li S, Zheng H
    Front Immunol, 2019;10:3041.
    PMID: 32010132 DOI: 10.3389/fimmu.2019.03041
    Carotenoids are biologically active pigments that are well-known to enhance the defense and immunity of the vertebrate system. However, in invertebrates, the role of carotenoids in immunity is not clear. Therefore, this study aims to review the scientific evidence for the role of carotenoids in invertebrate immunization. From the analysis of published literatures and recent studies from our laboratory, it is obvious that carotenoids are involved in invertebrate immunity in two ways. On the one hand, carotenoids can act as antioxidant enzymes to remove singlet oxygen, superoxide anion radicals, and hydroxyl radicals, thereby reducing SOD activity and reducing the cost of immunity. In some organisms, carotenoids have been shown to promote SOD activity by up-regulating the expression of the ZnCuSOD gene. Carotenoids, on the other hand, play a role in the expression and regulation of many genes involved in invertebrate immunity, including thioredoxins (TRX), peptidoglycan recognition receptor proteins (PGRPs), ferritins, prophenoloxidase (ProPO), vitellogenin (Vg), toll-like receptor (TLRs), heat shock proteins (HSPs), and CuZnSOD gene. The information in this review is very useful for updating our understanding of the progress of carotenoid research in invertebrate immunology and to help identify topics for future topics.
    Matched MeSH terms: Ferritins
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