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PubMed1979

Neurotoxicity of halogenated hydroxyquinolines: clinical analysis of cases reported outside Japan.

An analysis is presented of 220 cases of possible neurotoxic reactions to halogenated hydroxyquinolines reported from outside Japan. In 80 cases insufficient information was available for adequate comment and in 29 a relationship to the administration of clioquinol could be excluded. Of the remainder, a relationship to clioquinol was considered probable in 42 and possible in 69 cases. In six of the probable cases the neurological disturbance consisted of an acute reversible encephalopathy usually related to the ingestion of a high dose of clioquinol over a short period. The most common manifestation, observed in 15 further cases, was isolated optic atrophy. This was most frequently found in children, many of whom had received clioquinol as treatment for acrodermatitis enteropathica. In the remaining cases, a combination of myelopathy, visual disturbance, and peripheral neuropathy was the most common manifestation. Isolated myelopathy or peripheral neuropathy, or these manifestations occurring together, were infrequent. The onset of all manifestations (except toxic encephalopathy) was usually subacute, with subsequent partial recovery. Older subjects tended to display more side effects. The full syndrome of subacute myelo-optic neuropathy was more frequent in women, but they tended to have taken greater quantities of the drug.

Adolescent↗

PubMed2001

Chronic borreliosis presenting with morphea- and lichen sclerosus et atrophicus-like cutaneous lesions. a case report.

We report on a case of chronic cutaneous borreliosis with manifestations clinically compatible with morphea and lichen sclerosus et atrophicus. The histopathologic features of these lesions were those of acrodermatitis chronica atrophicans. Our case illustrates the concept that clinical aspects of morphea and lichen sclerosus et atrophicus pertain to the spectrum of cutaneous borreliosis.

Abdomen↗

PubMed1977

Primary and secondary disturbances in trace element metabolism connected with genetic metabolic disorders.

Several primarily inherited disturbances of minerals and trace elements have been discovered within the last 20 years. Secondary disturbances of selenium and zinc induced by dietetic treatment of inborn errors of metabolism and by parenteral nutrition also came to our knowledge recently. Two main types of chronic or primary hypomagnesaemia are known which are caused either by impaired intestinal absorption or by false magnesium handling by the kidneys. In acrodermatitis enteropathica, an autosomal-recessive inherited disease leading to characteristic skin lesions, alopecia and dystrophy, low zinc concentrations of serum, urine and hair are measured. The intestinal absorption of zinc is reduced. In copper metabolism two inherited diseases are known with low serum and usually caerulosplasmin concentrations. In Menkes' steely hair syndrome (trichlpoliodystrophy) an intestinal net malabsorption of copper exists, whereas in Wilson's disease the copper contents of several organs are increased.

Adult↗

PubMed1994

Papular-purpuric 'gloves and socks' syndrome: not only parvovirus B19.

We previously described an acute dermatosis characterized by pruritic erythematous and slightly papular lesions on the hands and feet in a 'gloves and socks' distribution associated with oral aphthoid lesions and fever (papular-purpuric 'gloves and socks' syndrome = PPGSS). We strongly suspected a viral origin, but serologic tests for a large panel of viruses remained negative. Subsequently, 2 cases of PPGSS with serologic evidence of a parvovirus B19 infection have been reported in the literature. Since then we observed 5 additional patients with a PPGSS. Parvovirus B19 infection could be confirmed in only 2 cases. Our findings suggest that the PPGSS can be another, yet undescribed manifestation of parvovirus infection. However, this cannot be shown in all the cases. As the papular acrodermatitis of childhood, this syndrome may be caused by various viral agents.

Adolescent↗

PubMed1981

Acquired zinc deficiency syndrome during total parenteral alimentation. Clinical and histopathological findings.

An acute zinc deficiency state developed in 6 patients on total parenteral alimentation, which allegedly included zinc 37 mumol/l. The actual concentration of this trace element when measured by us, was 3 mumol/l. The clinical picture consisted of an acrodermatitis enteropathica-like syndrome, with subsequent development of distinctive nail lesions, which consisted of white transverse bands in all finger- and toenails. Histopathological examination of several of these cutaneous lesions revealed distinctive changes, which we consider rather specific of zinc deficiency states. They consisted in parakeratosis, cleavage and detachment of the superficial layers of the epidermis, mainly intracellular and also extracellular edema of the epidermal cells, development of microvesicles at different epidermal levels, and severe vacuolar alteration of the dermoepidermal junction. These changes also affected the outer root sheath of the hair follicles.

Adult↗

PubMed1978

Skin lesions in acquired zinc deficiency due to parenteral nutrition.

The skin lesions seen in 10 patients who received parenteral nutrition during treatment of chronic enteropathy are described. All of these patients had a lowered serum zinc concentration. The skin lesions were similar to those seen in acrodermatitis enteropathica. After supplementation with zinc sulphate, the skin lesions disappeared completely. A decrease in the serum alkaline phosphatase level can be regarded as a sign of an impending zinc deficiency. Parenteral nutrition formulae should contain a sufficient amount of zinc.

Adult↗

PubMedDate not supplied

Trace metal abnormalities in adults during hyperalimentation.

Trace metal deficiencies are now a well-documented complication of total parenteral nutrition (TPN). Zinc deficiency may present in a variety of ways including acrodermatitis skin lesions, impaired immunity, poor growth or impaired wound healing, and mental disturbances. Copper deficiency presents a more uniform picture of hematologic abnormalities, usually anemia with leukopenia and neutropenia. Chromium and selenium deficiencies occur much less frequently, but well-documented cases have been reported. We currently recommended regular monitoring and supplementation of these four trace metals during TPN administration. This article describes the clinical abnormalities that may develop when deficiencies of trace metals occur during TPN administration, and we present recommendations for trace metal supplementation during TPN administration.

Chromium↗

PubMedDate not supplied

Effect of intragastric pH on the absorption of oral zinc acetate and zinc oxide in young healthy volunteers.

BACKGROUND: Zinc is an important nutrient and is necessary to maintain a multitude of physiologic processes. Mineral supplements that provide physiologic doses of zinc may be used when dietary zinc is inadequate. Zinc is also used in pharmacologic doses to treat zinc deficiency and diseases such as Wilson's disease and acrodermatitis enteropathica. Although there are several zinc salts available, they are not equal in solubility, which is thought to be a key factor in zinc absorption. Moreover, the solubility of the salts is affected by pH, which may vary between pH 1 and 7 under various physiologic conditions in the stomach. The objectives of this 2-way 4-phase crossover study were to evaluate the effect of high (> or = 5) and low (< or = 3) intragastric pH on the absorption of zinc from the acetate and oxide salt in young healthy volunteers. METHODS: After a 9-hour fast, 10 healthy subjects (5 males and 5 females) were given a single oral dose of 50 mg of elemental zinc as the acetate or the oxide salt and under either high or low intragastric pH conditions. In all phases, a Heidelberg capsule pH detector-transmitter was used to continuously monitor intragastric pH. During the high pH phases, single oral doses of famotidine 40 mg oral suspension were administered before the zinc to raise the intragastric pH above 5. Intragastric pH < or = 3 was maintained in the low pH phases. RESULTS: The mean plasma zinc area under the curve for zinc acetate at low pH (AL), zinc acetate at high pH (AH), zinc oxide at low pH (OL), and zinc oxide at high pH (OH) were 524, 378, 364, and 66 micrograms x h/dL, respectively. The highest zinc plasma concentrations occurred with the acetate salt at a low intragastric pH, while the lowest plasma concentrations occurred with the oxide salt at a high intragastric pH. The importance of pH to the dissolution of these salts was verified by in vitro tests. Twenty-four-hour urinary zinc excretion was the highest for the AL phase and lowest for the OH phase. CONCLUSION: This study indicates that intragastric pH and salt solubility-dissolution are important in the oral absorption of zinc. Specifically, the oxide salt is not an appropriate zinc salt to use in those patients with elevated intragastric pH.

Absorption↗

PubMed1984

Plasma and red blood cell fatty acid composition in children with protein-calorie malnutrition.

Plasma and red cell fatty acids were measured in 44 children with third degree malnutrition: 22 children with marasmus, 11 children with kwashiorkor, and 11 with marasmic kwashiorkor (MK). The presence of edema, dermatosis, hair changes, and hypoalbuminemia were positively correlated with the red cell percentage linoleic acid and negatively correlated with red cell percentage arachidonic acid. Red cell percentage linoleic acid in kwashiorkor was decreased from the control value of 15.3% to 10.9%. In marasmus and MK, there were significantly greater decreases, to 7.7% and 8.0%, respectively. Red cell arachidonic acid in kwashiorkor was significantly (P less than 0.001) decreased to 9.8% (control value of 13.1%) whereas in marasmus there was no significant change. Only one sample, plasma from an infant with marasmus, had any detectable eicosatrienoic acid (20:3,omega 9). Similar changes in fatty acid composition have been reported in infants with acrodermatitis enteropathica, in an infant with biotin deficiency, and in biotin-deficient rats.

8,11,14-Eicosatrienoic Acid↗

PubMed2005

Zinc-induced copper deficiency: a report of three cases initially recognized on bone marrow examination.

Copper deficiency is a rare cause of sideroblastic anemia and neutropenia that often is not suspected clinically. The morphologic findings in bone marrow, while not pathognomonic, are sufficiently characteristic to suggest the diagnosis, leading to further testing to establish the correct diagnosis. Excess zinc ingestion is among the causes of copper deficiency. We present 3 cases of zinc-induced copper deficiency in which the diagnosis first was suggested on the basis of bone marrow examination. The first patient was a 47-year-old man with a debilitating peripheral neuropathy that had progressed during the previous 18 months, mild anemia, and severe neutropenia. The second was a 21-year-old man receiving zinc supplementation for acrodermatitis enteropathica in whom moderate normocytic anemia and neutropenia developed. The third patient was a 42-year-old man with anemia, severe neutropenia, and a peripheral neuropathy that had progressed during 8 months. The bone marrow findings in all cases suggested copper deficiency, which was confirmed by further laboratory testing and determined to be due to zinc excess. The morphologic features, clinical manifestations, differential diagnosis, and pathogenetic mechanisms are discussed.

Adult↗

PubMed2005

Lyme borreliosis: insights into tick-/host-borrelia relations.

Lyme borreliosis (LB) is a serious infectious disease of humans and some domestic animals in temperate regions of the Northern Hemisphere. It is caused by certain spirochetes in the Borrelia burgdorferi sensu lato (s.l.) species complex. The complex consists of 11 species (genospecies). Borrelia burgdorferi sensu stricto (s.s.), Borrelia garinii and Borrelia afzelii are the major agents of human disease. Borrelia burgdorferi s.l. species are transmitted mainly by ticks belonging to the Ixodes ricinus species complex plus a few additional species not currently assigned to the complex. B. burgdorferi infections may produce an acute or chronic disease with a wide array of clinical symptoms such as erythema migrans (EM), carditis, arthritis, neuroborreliosis, and acrodermatitis chronica atrophicans (ACA). Differences in LB spirochetes 'genospecies' and strains/isolates determine the occurrence and severity of this multi-system disease. Accurate and reliable identification of the LB spirochetes in ticks as well as knowledge of their prevalence are essential for prevention against the disease and development of an effective vaccine. An overview of the knowledge of molecular factors with emphasis on potential protein-carbohydrate interactions in the tick-borrelia system is the main focus of this review.

Animals↗

PubMed2005

Tick-borne encephalopathies : epidemiology, diagnosis, treatment and prevention.

Tick-borne encephalopathies constitute a broad range of infectious diseases affecting the brain and other parts of the CNS. The causative agents are both viral and bacterial. This review focuses on the current most important tick-borne human diseases: tick-borne encephalitis (TBE; including Powassan encephalitis) and Lyme borreliosis. Rocky Mountain spotted fever (RMSF) and Colorado tick fever (CTF), less common tick-borne diseases associated with encephalopathy, are also discussed. TBE is the most important flaviviral infection of the CNS in Europe and Russia, with 10 000-12 000 people diagnosed annually. The lethality of TBE in Europe is 0.5% and a post-encephalitic syndrome is seen in over 40% of affected patients, often producing a pronounced impairment in quality of life. There is no specific treatment for TBE. Two vaccines are available to prevent infection. Although these have a good protection rate and good efficacy, there are few data on long-term immunity. Lyme borreliosis is the most prevalent tick-borne disease in Europe and North America, with >50 000 cases annually. Localised early disease can be treated with oral phenoxymethylpenicillin (penicillin V), doxycycline or amoxicillin. The later manifestations of meningitis, arthritis or acrodermatitis can be treated with oral doxycycline, oral amoxicillin or intravenous ceftriaxone; intravenous benzylpenicillin (penicillin G) or cefotaxime can be used as alternatives. The current use of vaccines against Lyme borreliosis in North America is under discussion, as the LYMErix vaccine has been withdrawn from the market because of possible adverse effects, for example, arthritis. RMSF and CTF appear only in North America. RMSF is an important rickettsial disease and is effectively treated with doxycycline. There is no treatment or preventative measure available for CTF.

Animals↗

PubMed2002

Pustular skin disorders: diagnosis and treatment.

The differential diagnosis for pustular skin disorders is extensive. The distribution of the lesions and the age of the patient are characteristics that may provide strong clues to the etiology of cutaneous pustular eruptions. In adults, generalized pustular dermatoses include pustular psoriasis, Reiter's disease and subcorneal pustular dermatosis. Medications can cause generalized pustular eruptions, such as in the case of acute generalized exanthematous pustulosis; or more localized reactions, such as acneiform drug eruptions, which usually involve the face, chest and back. Localized pustular eruptions are seen on the hands and feet in adults with pustulosis palmaris et plantaris and acrodermatitis continua (both of which may be variants of psoriasis); on the face in patients with acne vulgaris, rosacea, and perioral dermatitis; and on the trunk and/or extremities in patients with folliculitis. A separate condition known as eosinophilic folliculitis occurs in individuals with advanced human immunodeficiency disease. Severely pruritic, sterile, eosinophilic pustules are found on the chest, proximal extremities, head and neck. Elevated serum immunoglobulin E and eosinophilia are often concurrently found. In neonates, it is especially important to make the correct diagnosis with respect to pustular skin disorders, since pustules can be a manifestation of sepsis or other serious infectious diseases. Generalized pustular eruptions in neonates include erythema toxicum neonatorum and transient neonatal pustular melanosis, both of which are non-infectious. Pustules are seen in infants with congenital cutaneous candidiasis, which may or may not involve disseminated disease. Ofuji's syndrome is an uncommon generalized pustular dermatosis of infancy with associated eosinophilia. As in adults, neonates and infants may develop acne or scabies infestations. In this article, we review the most common pustular dermatoses and offer a systematic approach to making a diagnosis. We also report the most up-to-date information on the treatment of these various cutaneous pustular conditions.

Dermatitis↗

PubMed2005

Dermatologic signs in patients with eating disorders.

Eating disorders are significant causes of morbidity and mortality in adolescent females and young women. They are associated with severe medical and psychological consequences, including death, osteoporosis, growth delay and developmental delay. Dermatologic symptoms are almost always detectable in patients with severe anorexia nervosa (AN) and bulimia nervosa (BN), and awareness of these may help in the early diagnosis of hidden AN or BN. Cutaneous manifestations are the expression of the medical consequences of starvation, vomiting, abuse of drugs (such as laxatives and diuretics), and of psychiatric morbidity. These manifestations include xerosis, lanugo-like body hair, telogen effluvium, carotenoderma, acne, hyperpigmentation, seborrheic dermatitis, acrocyanosis, perniosis, petechiae, livedo reticularis, interdigital intertrigo, paronychia, generalized pruritus, acquired striae distensae, slower wound healing, prurigo pigmentosa, edema, linear erythema craquele, acral coldness, pellagra, scurvy, and acrodermatitis enteropathica. The most characteristic cutaneous sign of vomiting is Russell's sign (knuckle calluses). Symptoms arising from laxative or diuretic abuse include adverse reactions to drugs. Symptoms arising from psychiatric morbidity (artefacta) include the consequences of self-induced trauma. The role of the dermatologist in the management of eating disorders is to make an early diagnosis of the 'hidden' signs of these disorders in patients who tend to minimize or deny their disorder, and to avoid over-treatment of conditions which are overemphasized by patients' distorted perception of skin appearance. Even though skin signs of eating disorders improve with weight gain, the dermatologist will be asked to treat the dermatological conditions mentioned above. Xerosis improves with moisturizing ointments and humidification of the environment. Acne may be treated with topical benzoyl peroxide, antibacterials or azaleic acid; these agents may be administered as monotherapy or in combinations. Combination antibacterials, such as erythromycin with zinc, are also recommended because of the possibility of zinc deficiency in patients with eating disorders. The antiandrogen cyproterone acetate combined with 35 microg ethinyl estradiol may improve acne in women with AN and should be given for 2-4 months. Cheilitis, angular stomatitis, and nail fragility appear to respond to topical tocopherol (vitamin E). Russell's sign may decrease in size following applications of ointments that contain urea. Regular dental treatment is required to avoid tooth loss.

Adolescent↗

PubMed2003

Zinc homeostasis-regulating proteins: new drug targets for triggering cell fate.

Zinc is an essential trace element for life. Zinc is not only an important nutrient, cofactor of numerous enzymes and transcription factors, but also it acts as an intracellular mediator, similarly to calcium. The recent discovery of its intracellular molecular pathways opens the door to new fields of drug design. Zinc homeostasis results from a coordinated regulation by different proteins involved in uptake excretion and intracellular storage/trafficking of zinc. These proteins are membranous transporters, belonging to the ZIP and ZnT families, and metallothioneins. Their principal function is to provide zinc to new synthesized proteins, important for several functions such as gene expression, immunity, reproduction or protection against free radicals damage. Zinc intracellular concentration is correlated to cell fate, ie proliferation, differentiation or apoptosis, and modifications of zinc homeostasis are observed in several pathologies affecting humans at any stage of life. Two zinc-related diseases, acrodermatitis enteropathica and the lethal milk syndrome, have been recently related to mutations in zinc transporters, SLC39A4 and ZnT-4, respectively. Zinc acts as an inhibitor of apoptosis, while its depletion induces programmed cell death in many cell lines. However, excess zinc can also be cytotoxic, and zinc transporters as well as metallothioneins serve as zinc detoxificating systems. Several zinc channels, controlling the intracellular zinc movements and the free form of the metal, maintain the intracellular zinc homeostasis, and thus the balance between life and cell death. Apart from these general activities, zinc has particular biological roles in some specialized cells. It acts as a paracrine regulator in pancreatic cell, neuron or neutrophil activity by a mechanism of vesicles-mediated metal excretion and uptake. A well knowledge on zinc transporters will be useful to develop new molecular targets to act on these zinc-regulated biological functions.

Animals↗

PubMed1990

Prevalence of tick-borne encephalitis and Lyme borreliosis in a defined Swedish population.

Sera from 346 individuals living on Lisö, an area south of Stockholm, endemic for tick-borne encephalitis (TBE) and Lyme borreliosis, were tested for antibody activity to TBE-virus (TBEV) and Borrelia burgdorferi, using a sonicate antigen, by haemagglutination-inhibition and ELISA, respectively. 10/346 (3%) individuals had a history of previous serologically confirmed TBE with encephalitic symptoms, and 33/346 (10%) had a history of previous erythema chronicum migrans (ECM). Four individuals (1%) had been treated for neuroborreliosis and another 4 (1%) for acrodermatitis chronica atrophicans (ACA). Antibodies to TBEV and B. burgdorferi were detected in 40/346 (12%) and 89/346 (26%) individuals, respectively. The seroprevalence of Lyme borreliosis increased with age, time spent on Lisö, and number of reported tick-bites. For TBE there was a correlation between seropositivity and time spent on Lisö only. In sera from 50 healthy blood-donors, living in a non-endemic area, no antibody activity to TBEV could be detected and only 1/50 (2%) had antibodies to borrelia. In sera from 150 age and sex matched control individuals, living in the city of Stockholm, antibody activity to TBEV and borrelia was found in 8/150 (5%) and 13/150 (9%), respectively.

Adolescent↗

PubMed1996

Borrelia burgdorferi sensu lato strains isolated from cutaneous Lyme borreliosis biopsies differentiated by pulsed-field gel electrophoresis.

25 skin biopsy isolates of Borrelia burgdorferi sensu lato, mainly from German patients with erythema migrans [EM], borrelial lymphocytoma [BL] and acrodermatitis chronica atrophicans [ACA], were species-differentiated using pulsed-field gel electrophoresis (PFGE). The isolates revealed 15 B. afzelii, 8 B. garinii and 2 B. burgdorferi sensu stricto species according to Miu I digestion. All 6 ACA isolates were identified as B. afzelii species, whereas the 2 borrelial lymphocytoma isolates were grouped into B. garinii species. 12 B. afzelii strains, including 4 ACA isolates, were further investigated by digestion with 5 restriction enzymes. Most of the strains revealed an individual pattern. No specific characteristically large restriction fragment pattern (LRFP) could be detected within the ACA and/or EM group. The ACA isolates could not be clearly differentiated from the EM isolates according to the LRFP patterns. PFGE is thus a highly effective method for detecting differences among B. afzelii isolates.

Biopsy↗

PubMed1978

Zinc deficiency in total parenteral nutrition.

A patient with multiple enterocutaneous fistulae who developed the skin manifestations of acrodermatitis enteropathica while on total parenteral nutrition is described. The value of monitoring the serum alkaline phosphatase to demonstrate zinc deficiency is shown. The skin manifestations responded rapidly to the re-introduction of zinc to the diet.

Adult↗