vitamin C deficiency

维生素 C 缺乏
  • 文章类型: Journal Article
    目的:我们的目的是调查澳大利亚儿科中维生素C缺乏症的发病率,描述处于危险中的队列,并确定与维生素C缺乏儿童症状发展相关的因素。我们还旨在为患有镰刀病的儿童提出管理指南。
    方法:在澳大利亚一家三级儿科医院进行了为期三年的回顾性研究,从2019年8月到2022年7月。从出生到18岁的孩子,维生素C水平低(<23μmol/L),包括在内。从医院医疗记录中提取的数据包括人口统计,体重,合并症,饮食失调诊断,临床特征,调查和治疗。进行描述性统计和风险统计。
    结果:在接受维生素C水平检查的887名患者中,我们确定了272(31%)的维生素C水平<23μmol/L。其中,13(5%)是维生素C缺乏的症状,19(7%)可能是有症状的。在维生素C缺乏的患者中,248(91%)有合并症,神经发育障碍是最常见的,176人(65%)限制进食。当比较无症状和有症状组时,在有症状的组中,维生素C水平显著降低,与自闭症谱系障碍相关的饮食紊乱更为常见.
    结论:为了避免延误诊断和不必要的检查,临床医生应该熟悉镰刀病的症状,并进行饮食评估,维生素C测定,并在适当情况下开始经验性补充维生素C。
    OBJECTIVE: We aimed to investigate the frequency of vitamin C deficiency scurvy in the Australian paediatric context, describe cohorts at risk, and identify factors associated with development of symptoms in children with vitamin C deficiency. We also aimed to propose a management guideline for children with features of scurvy.
    METHODS: A retrospective study was done at a tertiary paediatric hospital in Australia over a three-year period, from August 2019 to July 2022. Children from birth to 18 years old, whose vitamin C levels were low (<23 μmol/L), were included. Data extracted from hospital medical records included demographics, weight, co-morbidities, eating disorder diagnoses, clinical features, investigations and treatment. Descriptive statistics and risk statistics were performed.
    RESULTS: In a cohort of 887 patients who had their vitamin C levels checked, we identified 272 (31%) who had a vitamin C level <23 μmol/L. Of these, 13 (5%) were symptomatic of vitamin C deficiency and 19 (7%) may have been symptomatic. In patients with vitamin C deficiency, 248 (91%) had comorbidities, neurodevelopmental disorders being most common, and 176 (65%) had restricted eating. When the asymptomatic and symptomatic groups were compared, in the symptomatic group, there was a significantly lower vitamin C level and disordered eating related to autism spectrum disorders was more common.
    CONCLUSIONS: In order to avoid delayed diagnoses and unnecessary investigations, clinicians should be familiar with symptoms of scurvy and perform a dietary assessment, vitamin C assay, and commence empiric vitamin C supplementation where appropriate.
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  • 文章类型: Case Reports
    在西方国家,镰刀已成为一种罕见的疾病,具有潜在的高发病率。早期诊断至关重要,并且可能具有挑战性。
    我们介绍了一名56岁男性患者的病例,该患者在轻微撞击创伤后出现了出血性素质。以前,患者疲劳和食欲不振。特征性的皮肤爆发和独特的皮肤组织学以及血清维生素C水平的降低导致了镰刀病的诊断。补充维生素C后,症状迅速改善。
    总而言之,在出血性素质不明确且有营养异常病史的情况下,应考虑维生素C缺乏症。特别是在还没有表现出完整的临床症状谱或只有适度降低的血清维生素C水平的情况下,全面的临床皮肤病学检查和皮肤活检对于早期诊断和预防并发症至关重要。
    UNASSIGNED: Scurvy has become a rare disease in western countries with potentially high morbidity. Early diagnosis is crucial and can be challenging.
    UNASSIGNED: We present the case of a 56-year-old male patient who developed hemorrhagic diathesis after trivial impact trauma. Previously, the patient suffered from fatigue and loss of appetite. Characteristic skin eruptions and a distinct skin histology along with a decreased serum vitamin C level led to the diagnosis of scurvy. Following vitamin C supplementation, symptoms improved rapidly.
    UNASSIGNED: In conclusion, vitamin C deficiency should be considered in cases with unclear hemorrhagic diathesis and a medical history of nutritional irregularities. Especially in cases of scurvy that do not yet show the full clinical spectrum of symptoms or have only moderately decreased serum vitamin C levels, thorough clinical dermatological examination and a skin biopsy are essential for early diagnosis and to prevent complications.
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  • 文章类型: Journal Article
    口腔粘膜下纤维化(OSMF)恶变率高,是一种隐匿的慢性炎症性疾病。尽管这种疾病似乎是多方面的,槟榔咀嚼似乎是主要的病因。已尝试了各种治疗策略,但由于其多模态发病机理,均未证明可治愈该疾病。活性氧(ROS)似乎在癌症形成中起作用。由于OSMF是一种口腔癌前疾病,被发现与槟榔和烟草等致癌物有关,它被认为与ROS有一定的关系。由于ROS以及其他机制导致的组织损伤可能导致OSMF的复杂病理生理学。体内的抗氧化系统有助于防止由高反应性ROS引起的损伤,并有助于组织的修复。为了研究OSMF条件下的氧化应激和抗氧化维生素的水平,目前的审查已经完成。我们进行了彻底的文献检索,以确定原始报告和研究确定OSMF条件下的氧化应激和抗氧化维生素的状态使用几个数据库,包括谷歌学者,PubMed,还有Scopus.我们的综述观察到,在OSMF的条件下,氧化应激增加,如丙二醛(MDA)的增加和抗氧化剂维生素如维生素A的减少所示,维生素C,还有维生素E,摄入抗氧化维生素后,OSMF患者症状改善.在识别氧化应激和抗氧化状态的帮助下,我们可以评估OSMF的临床阶段,并可以制定综合治疗方案。
    Oral submucous fibrosis (OSMF) has a high rate of malignant transformation and is an insidious chronic inflammatory disease. Though this disorder seems to be multifactorial in origin, betel quid chewing appears to be the main etiologic factor. Various treatment strategies have been attempted but none proven to cure the disorder because of its multimodal pathogenesis. Reactive oxygen species (ROS) appear to have a role in cancer formation. As OSMF is an oral premalignant disorder and found to be associated with carcinogens like areca nut and tobacco, it is believed to have some relationship with ROS. Tissue damage due to ROS along with other mechanisms may result in the complex pathophysiology of OSMF. The antioxidant system in the body helps to prevent damage caused by highly reactive ROS and helps in the repair of tissues. To study the levels of oxidative stress and antioxidant vitamins in OSMF condition, the present review was done. We carried out a thorough literature search to identify original reports and studies determining the status of oxidative stress and antioxidant vitamins in OSMF condition using several databases including Google Scholar, PubMed, and Scopus. Our review observed that the oxidative stress increased in the condition of OSMF as shown by an increase in malonaldehyde (MDA) and a decrease in antioxidant vitamins like vitamin A, vitamin C, and vitamin E. Also, after the intake of antioxidant vitamins, there was symptomatic improvement in OSMF patients. With the help of identifying oxidative stress and antioxidant status, we can assess the clinical stage of OSMF and can develop a comprehensive treatment plan.
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  • 文章类型: Case Reports
    镰刀,以维生素C缺乏为特征,通常表现为各种症状,最常见的皮肤损伤。然而,孤立性皮肤病变的表现被认为是不典型的。有大量饮酒史的老年患者,表现为小的皮肤病变,迅速发展为孤立的开放性伤口,没有任何先前的创伤。实验室分析显示严重的维生素C缺乏(<5μmol/L)。高剂量维生素C替代疗法后,患者表现出明显的改善。此病例强调了镰刀可能会出现孤立的下体伤口,没有典型症状。它强调了迅速考虑维生素C替代疗法的重要性,特别是在酗酒者等高危人群中,医疗保健提供者。
    Scurvy, characterized by vitamin C deficiency, typically manifests with various symptoms, most commonly skin lesions. However, the presentation of a solitary skin lesion is considered atypical. An elderly patient with a history of heavy alcohol consumption presented with a small skin lesion that developed rapidly into a solitary open wound without any preceding trauma. Laboratory analysis revealed severe vitamin C deficiency (<5 μmol/L). The patient showed significant improvement following high-dose vitamin C replacement therapy. This case underscores the potential for scurvy to present with a solitary lower body wound devoid of typical symptoms. It highlights the importance of prompt consideration of vitamin C replacement therapy, particularly in high-risk groups such as alcoholics, by healthcare providers.
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  • 文章类型: Case Reports
    UNASSIGNED: ESR: erythrocyte sedimentation rate; Hb: haemoglobin; HSP: Henoch-Schönlein purpura; WCC: white-cell count.
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  • 文章类型: Journal Article
    可调节胃束带术(AGB)后的结果不令人满意,需要移除许多设备以治疗吞咽困难。维生素C和硫胺素缺乏在工业化国家是罕见的疾病。从2021年到2023年接受AGB切除(吞咽困难占90%)的患者(腹腔镜15和机器人5)进行了维生素C和硫胺素水平测试。包括20名患者(8m/12f,中位年龄56岁(范围33.6-79.4)。去除AGB时的BMI为39.7(范围24.4-50.1)kg/m2。只有20%的患者有正常的硫胺素水平,30%的水平很低,20%是有缺陷的,和30%是非常低的。只有25%的患者维生素C水平正常,40%的水平很低,25%是有缺陷的,10%处于极低的水平。三分之一的患者的HbA1c水平在5.8和6.4之间,22%的患者的HbA1c水平>6.5;60%的患者患有高脂血症。可调节的胃束带患者会出现维生素C和硫胺素缺乏的发生率,和水平的常规测试建议。
    Outcomes after adjustable gastric banding (AGB) were unsatisfactory and many devices need to be removed for dysphagia. Vitamin C and thiamin deficiency are rare conditions in industrialized countries. Patients undergoing AGB removal (90% for dysphagia) from 2021 to 2023 (laparoscopic 15 and robotic 5) were tested for vitamin C and thiamin levels. Twenty patients (8 m/12 f median aged 56 (range 33.6-79.4) were included. BMI at AGB removal was 39.7 (range 24.4-50.1) kg/m2. Only 20% of patients had normal thiamin levels, 30% had low levels, 20% were deficient, and 30% were critically low. Only 25% of patients had normal vitamin C levels, 40% had low levels, 25% were deficient, and 10% were critically low. One third of patients had HbA1c levels between 5.8 and 6.4 and 22% had levels >6.5; 60% of patients had hyperlipidemia. Adjustable gastric banding patients develop concerning rates of vitamin C and thiamin deficiency, and routine testing for levels is recommended.
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  • 文章类型: Case Reports
    该病例研究的特点是一名患有克罗恩病(CD)的40岁男性,最初被误诊为血管炎,但后来由于维生素C缺乏而被证明患有镰刀症。患者的饮食几乎完全由高度加工的快餐组成,没有新鲜的水果或蔬菜。一个有点敏感的人,他的小腿上有紫罗兰色的皮疹,轻度牙龈出血和肿大,肌肉酸痛是他的症状之一。在实验室研究中发现了贫血和无法检测到的维生素C水平。皮肤样本显示毛囊角化过度,盘绕的毛发,和卵泡周围出血,消除血管炎的可能性。通过在肌肉活检中发现的无法检测到的维生素C水平和肌内出血来证实,可以确认是否患有此病。服用维生素C一个月后,病人的皮肤是完全清楚的。这个例子强调了在患有CD和其他可能导致吸收不良的疾病的患者中考虑维生素C不足的重要性。误诊可能导致不必要的治疗和医疗费用。必须尽快诊断,因为它可能导致胃肠道/脑内出血和死亡。
    This case study features a 40-year-old male with Crohn\'s disease (CD) who was initially misdiagnosed with vasculitis but was later shown to have scurvy owing to vitamin C deficiency. The patient\'s diet was nearly exclusively made up of highly processed fast food, with no fresh fruits or vegetables. A mildly sensitive, violaceous rash on his lower legs, mild gingival hemorrhage and enlargement, and muscle soreness were among his symptoms. Anemia and undetectable vitamin C levels were discovered in laboratory studies. A skin sample revealed follicular hyperkeratosis, coiled hairs, and perifollicular bleeding, eliminating the possibility of vasculitis. Scurvy was confirmed by undetectable vitamin C levels and intramuscular bleeding discovered during a muscle biopsy. After one month of vitamin C administration, the patient\'s skin was entirely clear. This instance emphasizes the significance of taking vitamin C insufficiency into account in patients with CD and other disorders that can cause malabsorption. Misdiagnosis might result in unneeded treatments and medical expenses. Scurvy must be diagnosed as soon as possible because it might cause gastrointestinal/intracerebral hemorrhage and death.
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  • 文章类型: Case Reports
    维生素C缺乏,也被称为镰刀病,导致结缔组织异常和各种症状。我们描述了一个壳出血的病人,非常罕见的镰刀病。一名39岁的男子左臂和左腿虚弱。最初诊断为右侧肠管出血,他接受了脑出血的疏散。反复体格检查显示有出血倾向和多次未经治疗的龋齿时,怀疑患有此病,缺失的牙齿,和牙龈炎.该患者的吸烟史进一步支持了对风湿病的诊断,酒精使用障碍,不良饮食,和低血浆维生素C浓度。在接受包括维生素C在内的口服营养补充剂后,出血倾向迅速改善。该病例强调了在对有出血倾向的患者进行鉴别诊断时,包括镰刀的重要性。尤其是那些饮食不良或饮食史不详的人。经验性服用维生素C是一种合理的治疗方法。
    Vitamin C deficiency, also known as scurvy, causes abnormalities in connective tissues and varied symptoms. We describe a patient with putaminal hemorrhage, a very rare presentation of scurvy. A 39-year-old man presented with weakness in the left arm and left leg. Right putaminal hemorrhage was initially diagnosed, and he underwent evacuation of the intracerebral hemorrhage. Scurvy was suspected when repeated physical examinations revealed a bleeding tendency and multiple untreated dental caries, missing teeth, and gingivitis. A diagnosis of scurvy was further supported by the patient\'s history of smoking, alcohol use disorder, poor diet, and low plasma vitamin C concentration. After receiving oral nutritional supplementation including vitamin C, the bleeding tendency quickly improved. This case highlights the importance of including scurvy in a differential diagnosis for patients with bleeding tendencies, especially those with a poor diet or unknown dietary history. Empirical administration of vitamin C is a reasonable treatment.
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  • 文章类型: Case Reports
    镰刀是一种由缺乏维生素C引起的疾病。它是一种营养缺乏,与多种严重疾病有关。尽管由于食品和营养补充剂的进步,发达国家现在很少报告这些病例,它们在发展中国家仍然很普遍,虽然罕见,因为营养不良。由于镰刀病的患病率较低,在大多数情况下,诊断延迟,有时完全错过,这会导致严重的并发症和不必要的手术。这里,我们介绍了一例罕见的4岁女性儿童患有严重急性营养不良(SAM),并伴有镰刀症.最初的临床体征显示SAM。对左股骨和膝关节进行X线和MRI检查,以进一步评估骨科参数。临床表现和X线影像学检查证实了镰刀病的所有体征。患者开始使用配方食品75(F-75)饮食,以解决严重的营养不良,并观察到稳定的体重增加。
    Scurvy is a disease caused by a lack of vitamin C. It is a nutritional deficiency that is associated with multiple severe conditions. Although developed countries report these cases rarely now due to advancements in food and nutritional supplements, they are still prevalent in developing countries, albeit rare, because of poor nutritional status. Due to the lower prevalence of scurvy, diagnosis is delayed in the majority of cases and sometimes missed completely, which results in serious complications and unnecessary workups. Here, we present a rare case of a four-year-old female child with severe acute malnutrition (SAM) presenting with scurvy. The initial clinical signs showed SAM. X-ray and MRI of the left femur and knee were done to further evaluate the orthopedic parameters. Clinical presentation and radiographic imaging confirmed all the signs of scurvy. The patient was started on the Formula 75 (F-75) diet to address the severe malnutrition, and steady weight gain was observed.
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  • 文章类型: Case Reports
    一名先前健康的31岁男子出现呼吸急促恶化和瘀点皮疹。超声心动图显示严重的右侧心力衰竭,顺行右室流出多普勒包络的收缩期中期,提示肺动脉高压。一个广泛的检查发现了镰刀病,补充维生素C后不久症状迅速缓解。
    A previously healthy 31-year-old man presented with worsening shortness of breath and a petechial rash. Echocardiography showed severe right-sided heart failure with midsystolic notching of the antegrade right ventricular outflow Doppler envelope suggesting pulmonary hypertension. An extensive work-up revealed scurvy, with a dramatic resolution of symptoms shortly after vitamin C supplementation.
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