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Journal articles on the topic 'Hypermetamorphosis'
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1
Danek, A. "„Hypermetamorphosis“." Der Nervenarzt 78, no. 3 (2007): 342–48. http://dx.doi.org/10.1007/s00115-006-2171-2.
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Basnet, Madhur, Luna Paudel, Bikram Prasad Gajurel, Nidesh Sapkota, and Raj Kumar Rauniyar. "Kluver-Bucy Syndrome in a Patient with Bipolar Affective Disorder." Journal of Lumbini Medical College 6, no. 1 (2018): 36–40. http://dx.doi.org/10.22502/jlmc.v6i1.183.
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Introduction: Kluver and Bucy described a behavioral syndrome in rhesus monkeys following bilateral temporal lobectomy which included psychic blindness, hyperorality, hypermetamorphosis, hypersexuality, and emotional unresponsiveness.
 Case report: A 44 years old right handed male of Indo-aryan origin, blacksmith by profession, had presented in manic phase of bipolar illness. He had hypersexuality, hypermetamorphosis, hyperorality, and altered dietary habits along with amnesia and fleeting misrecognition of even his close relatives. MRI of the patient showed mild cerebral atrophy with right temporal lobe atrophy. The patient was treated with lithium and olanzapine along with benzodiazepines. The symptoms resolved gradually with resolution of the manic phase. Patient had similar features in the previous manic episode as well that resolved with resolution of mania.
 Conclusion: The symptoms of Kluver-Bucy syndrome like increased libido, increased activity might be confused with that of mania. Other features of Kluver-Bucy syndrome and the overt hypersexuality could help identify it even during manic phase of bipolar illness.
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Maqsud, Abrar Nasser, Fatimah Maitham Alkhunaizi, and Hosam Al-Jehani. "Rare presentation of Klüver-Bucy syndrome following subarachnoid hemorrhage." Surgical Neurology International 15 (June 7, 2024): 192. http://dx.doi.org/10.25259/sni_358_2024.
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Background: Klüver-Bucy syndrome (KBS) is a rare neuropsychiatric disorder, and it can be associated with a variety of neurological disorders. It is characterized by visual agnosia, placidity, hyperorality, hypersexuality, dietary changes, amnesia, and hypermetamorphosis. KBS is mainly a clinical diagnosis, with at least three symptoms sufficient to diagnose the condition. Case Description: The case describes a 49-year-old Filipino woman with a history of hypertension who presented with symptoms strongly suggesting KBS following subarachnoid hemorrhage, including behaviors such as hyperorality, hypermobility, placidity, hypermetamorphosis, and hypersexuality along with memory disturbance. She was managed as a case of brief psychotic disorder initially with olanzapine, then on the second presentation as a case of delirium with risperidone. Conclusion: Among many symptoms of KBS, only three symptoms are required for the diagnosis clinically. Numerous neurological conditions can cause KBS. Symptomatic treatment is the mainstream treatment currently for KBS.[3] While different differential diagnoses are present, neurologists, psychiatrists, neurosurgeons, and radiologists should collaborate and be vigilant for the diagnosis of KBS, especially with the presence of one of its etiologies.
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Hernandez-Vega, Melissa, Sandra Badial-Ochoa, Francisco Javier Rivas-Ruvalcaba, and Ildefonso Rodriguez-Leyva. "Unusual complication of Herpes simplex encephalitis: complete Klüver-Bucy syndrome." BMJ Case Reports 15, no. 7 (2022): e250745. http://dx.doi.org/10.1136/bcr-2022-250745.
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Klüver-Bucy syndrome is a rare neurobehavioral disorder caused by a bilateral temporal lobe lesion affecting the hippocampus and amygdala; clinically characterised by hyperorality, hypermetamorphosis, placidity, altered sexual behaviour, eating, disorders and visual impairment, agnosia and amnesia. However, the complete syndrome is rarely seen, and diagnosis does not require all the symptoms to be manifested simultaneously.We describe a patient who developed a complete Klüver-Bucy syndrome secondary to bilateral temporal involvement due to herpetic encephalitis.
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Carroll, Brendan T., Harold W. Goforth, and Lisa A. Raimonde. "Partial Kluver-Bucy Syndrome: Two Cases." CNS Spectrums 6, no. 4 (2001): 329–32. http://dx.doi.org/10.1017/s1092852900022033.
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ABSTRACTKluver-Bucy syndrome (KBS) is a rare neuropsychiatric disorder that may be characterized by visual agnosia, placidity, altered sexual activity, hypermetamorphosis, and hyperorality. Patients with KBS present with a complex behavioral syndrome. KBS is usually associated with lesions of the amygdala or amygdaloid pathways. However, partial KBS may occur in the absence of the classic bilateral temporal lesions. Pharmacologic treatment options have been developed from the results of case reports, which suggest that carbamazepine and antipsychotics may be helpful. We present the cases of two patients with partial KBS who responded favorably to antipsychotic medication.
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Body, Mélanie, Vincent Burlat, and David Giron. "Hypermetamorphosis in a leaf-miner allows insects to cope with a confined nutritional space." Arthropod-Plant Interactions 9, no. 1 (2014): 75–84. http://dx.doi.org/10.1007/s11829-014-9349-5.
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Jandausch, Kenny, Hans Pohl, Ulrike Aspöck, Shaun Winterton, and Rolf Beutel. "Morphology of the primary larva of Mantispa aphavexelte Aspöck & Aspöck, 1994 (Neuroptera: Mantispidae) and phylogenetic implications to the order of Neuroptera." Arthropod Systematics & Phylogeny 76, no. 3 (2018): 529–60. http://dx.doi.org/10.3897/asp.76.e31967.
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The external and internal morphology of the primary larva of Mantispa aphavexelte was studied and documented with a broad spectrum of techniques. The cephalic anatomy, which is very similar to conditions found in other neuropteran immatures, is mainly affected by the formation of specialized mandibulo-maxillary sucking tubes and associated internal features. The postcephalic anatomy largely follows a generalized holometabolan pattern, with well-developed muscles in the thorax and the abdominal segments, an elongate, uncondensed ganglionic chain, and well-developed Malpighian tubules. The phylogenetic analysis of 70 larval characters suggests a weakly supported clade comprising Dilaridae, Berothidae, Rhachiberothidae and Mantispidae. Mantispoidea comprising Rhachiberothidae, Berothidae and paraphyletic Mantispidae is suggested by overlapping scales on antennae and maxillae, thoracic “trichobothria”, and hypermetamorphosis with scarabaeiform 2nd instar larvae. The relationships of the mantispoid terminals are not resolved, and Mantispa (Mantispinae) and Plega (Symphrasinae) are not retrieved as sister taxa. Spider parasitism and feeding in spider egg sacs is characteristic for Mantispinae, whereas immatures of Berothidae and non-mantispine mantispid larvae prey on the offspring of social or non-social aculeatan Hymenoptera, on termites, or on immatures living in soil or under bark, for example scarab larvae. Specializations of the legs like a trumpet-shaped empodium and a fixed tarsal pseudoclaw, enable mantispine larvae to cope with functional challenges linked with their specialized form of parasitism, like entering a host or penetrating its egg sack. The largely immobilized and straight sucking stylets are suitable for piercing eggs of spiders, but not for grasping prey. The terminal eversible attachment structure probably provides anchorage of the abdominal apex and thus may facilitate the penetration of the egg sac or membranes of the body surface of a spider. It may also facilitate boarding a passing suitable host. Very small size of the 1st instars and hypermetamorphosis are likely linked with parasitism. Even though the primary larvae of M. aphavexelte belong to the smallest immatures in Neuroptera, the effects of miniaturization are very limited.
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Jandausch, Kenny, Hans Pohl, Ulrike Aspöck, Shaun Winterton, and Rolf Beutel. "Morphology of the primary larva of Mantispa aphavexelte Aspöck & Aspöck, 1994 (Neuroptera: Mantispidae) and phylogenetic implications to the order of Neuroptera." Arthropod Systematics & Phylogeny 76 (November 27, 2018): 529–60. https://doi.org/10.3897/asp.76.e31967.
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The external and internal morphology of the primary larva of Mantispa aphavexelte was studied and documented with a broad spectrum of techniques. The cephalic anatomy, which is very similar to conditions found in other neuropteran immatures, is mainly affected by the formation of specialized mandibulo-maxillary sucking tubes and associated internal features. The postcephalic anatomy largely follows a generalized holometabolan pattern, with well-developed muscles in the thorax and the abdominal segments, an elongate, uncondensed ganglionic chain, and well-developed Malpighian tubules. The phylogenetic analysis of 70 larval characters suggests a weakly supported clade comprising Dilaridae, Berothidae, Rhachiberothidae and Mantispidae. Mantispoidea comprising Rhachiberothidae, Berothidae and paraphyletic Mantispidae is suggested by overlapping scales on antennae and maxillae, thoracic "trichobothria", and hypermetamorphosis with scarabaeiform 2nd instar larvae. The relationships of the mantispoid terminals are not resolved, and Mantispa (Mantispinae) and Plega (Symphrasinae) are not retrieved as sister taxa. Spider parasitism and feeding in spider egg sacs is characteristic for Mantispinae, whereas immatures of Berothidae and non-mantispine mantispid larvae prey on the offspring of social or non-social aculeatan Hymenoptera, on termites, or on immatures living in soil or under bark, for example scarab larvae. Specializations of the legs like a trumpet-shaped empodium and a fixed tarsal pseudoclaw, enable mantispine larvae to cope with functional challenges linked with their specialized form of parasitism, like entering a host or penetrating its egg sack. The largely immobilized and straight sucking stylets are suitable for piercing eggs of spiders, but not for grasping prey. The terminal eversible attachment structure probably provides anchorage of the abdominal apex and thus may facilitate the penetration of the egg sac or membranes of the body surface of a spider. It may also facilitate boarding a passing suitable host. Very small size of the 1st instars and hypermetamorphosis are likely linked with parasitism. Even though the primary larvae of M. aphavexelte belong to the smallest immatures in Neuroptera, the effects of miniaturization are very limited.
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Fischer, Thilo C. "In search for the unlikely: Leaf-mining caterpillars (Gracillariidae, Lepidoptera) from Upper Cretaceous and Eocene ambers." Zitteliana 95 (December 8, 2021): 135–45. http://dx.doi.org/10.3897/zitteliana.95.63317.
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Fossil leaf-mining caterpillars from amber are firstly described as the new species Phyllocnistis cretacea from Upper Cretaceous Myanmar amber and Phyllonorycter inopinata from Eocene Baltic amber. Both show typical traits of leaf-miners, and specifically, of later instars of caterpillars of their respective genera. The findings give further evidence for these being quite old and conservative genera of Gracillariidae. These are basal Ditrysia which retained the larval feeding and mining live mode. The findings also represent direct fossil evidence of individual stages of hypermetamorphosis known from extant Gracillariidae. The finds from the Upper Cretaceous and their putative identifications give direct evidence for a minimal geological age for the genus Phyllocnistis (Phyllocnistinae) and, by indirect conclusion based on their divergence, also for the genus Phyllonorycter in a sister clade (Lithocolletinae). It also predates mining habit closer to the time of radiation of their angiospermous host plants.
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Fischer, Thilo C. "In search for the unlikely: Leaf-mining caterpillars (Gracillariidae, Lepidoptera) from Upper Cretaceous and Eocene ambers." Zitteliana 95 (December 8, 2021): 135–45. https://doi.org/10.3897/zitteliana.95.63317.
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Fossil leaf-mining caterpillars from amber are firstly described as the new species Phyllocnistis cretacea from Upper Cretaceous Myanmar amber and Phyllonorycter inopinata from Eocene Baltic amber. Both show typical traits of leaf-miners, and specifically, of later instars of caterpillars of their respective genera. The findings give further evidence for these being quite old and conservative genera of Gracillariidae. These are basal Ditrysia which retained the larval feeding and mining live mode. The findings also represent direct fossil evidence of individual stages of hypermetamorphosis known from extant Gracillariidae. The finds from the Upper Cretaceous and their putative identifications give direct evidence for a minimal geological age for the genus Phyllocnistis (Phyllocnistinae) and, by indirect conclusion based on their divergence, also for the genus Phyllonorycter in a sister clade (Lithocolletinae). It also predates mining habit closer to the time of radiation of their angiospermous host plants.
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Carlos Henrique Marchiori. "Establishing the phenology of the Bombyliidae Family (Insecta: Diptera)." Open Access Research Journal of Life Sciences 3, no. 1 (2022): 061–87. http://dx.doi.org/10.53022/oarjls.2022.3.1.0144.
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Despite the high number of species of this family, the biology of juveniles of most species is poorly understood. The postembryonic development is of the type hypermetamorphic, with parasitoid or hyperparasitoid larvae. Exceptions are the larvae of Heterotropinae, whose biology is similar to that of other Asiloidea, with predatory larvae that do not undergo hypermetamorphosis. Hosts of bee flies belong to different orders of insects, but mostly are among the holometabolous orders. The objective of this work is to research the biogeography, bioecology, habitat, geographic distribution, taxonomy, life cycle, phenology, parasitoidism (parasitism) and predatism of the Bombyliidae family (Insecta: Diptera). The research was carried out in studies related to quantitative aspects taxonomic and conceptual aspects. A literature search was carried out containing articles published from 1937 to 2021. The mini review was prepared in Goiânia, Goiás, from September to October 2021. The mini-review was prepared in Goiânia, Goiás, from September to October 2021, through, SEEK education, Periodicals CAPES, Google Academic, Bioline International, VADLO, Scopus, Web of Science, LILACS, Medline, LIS and Portal of Scientific Journals in Health Sciences.
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Кrut’, M. V. "Jean-Anri Fabre – great naturalist and entomologist." Ukrainian Entomological Journal 15, no. 2 (2019): 71–75. http://dx.doi.org/10.15421/281816.
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During 30 years Jean-Anri Fabre had been studying insects and retained a greatest literary legacy. His dissertation was devoted to digger wasps (Sphecidae), with emphasis on their food specialization and habits. At the field entomological station Fabre studied development and mode of life of beetles (Attelabidae, Scarabaeidae, Silphidae), flies, other insects and scorpions. He detected the phenomenon of hypermetamorphosis in development of beetle Sitaris muralis (Meloidae), revealed the extra-intestinal digestion of fly larvae, drawn a conclusion about existence of insects’ instinct. The results of research works were published in 10 volumes of book entitled «Entomological Memoirs», among these four books were devoted to wasps. Other books of Fabre are «The Life of Insects», «Instinct and Customs of Insects», «Dung Beetles», «Wasps», «Bees». Fabre’s ideas are of importance for agriculture and forestry. His observations revealed new possibilities of insect pests’ control. It is possible to draw data on biological method of control from his exact descriptions. Jean-Anri Fabre was chosen an honorary member of Russian entomological society.
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Boronat, S., I. Delgado, A. Felipe, A. Macaya, and N. Juliá-Palacios. "Pediatric Klüver–Bucy Syndrome: Report of Two Cases and Review of the Literature." Neuropediatrics 49, no. 02 (2017): 104–11. http://dx.doi.org/10.1055/s-0037-1609036.
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AbstractKlüver–Bucy syndrome (KBS) is a rare behavioral phenotype described in monkeys and humans that appears most often after bilateral temporal damage. The main features of KBS are compulsion to examine objects orally, increased sexual activity, placidity, hypermetamorphosis, visual agnosia, and amnesia. Cases in children are scarce, and the most frequently reported etiology is herpes encephalitis. Hyperorality (90%), hypersexuality (82%), and epilepsy (70%) were the most common features of the 51 cases reported in the literature to date. Carbamazepine, selective serotonin reuptake inhibitors (SSRIs), and neuroleptics have been used for symptomatic treatment with variable control. Corticosteroids or immunosupressive agents, such as rituximab, can be an option to use in some cases, according to etiology suspicion. Cognitive and behavioral disturbances after KBS are often severe, but improvement can occur over a long time and residual disabilities vary from major to fairly mild.We report two new encephalitis-associated pediatric patients and review all of the pediatric KBS cases in the literature to better describe the clinical features of this rare neurobehavioral condition.
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Förstl, Hans, Alistair Burns, Raymond Levy, Nigel Cairns, Philip Luthert, and Peter Lantos. "Neuropathological Correlates of Behavioural Disturbance in Confirmed Alzheimer's Disease." British Journal of Psychiatry 163, no. 3 (1993): 364–68. http://dx.doi.org/10.1192/bjp.163.3.364.
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Clinico-pathological correlations were examined in 54 patients with neuropathologically verified Alzheimer's disease (AD) who were part of a prospective study. Behavioural disturbance was documented using an expanded version of the Stockton Geriatric Rating Scale (SGRS). The subscores for physical disability (P), apathy (A) and communication failure (C) (summation score PAC) were closely correlated and were high in most patients during the late stages of illness. High PAC scores correlated with an earlier onset and longer duration of illness, lower brain weight, more severe tangle pathology in the parahippocampal gyrus and the frontal and parietal neocortex, and lower neuron counts in the hippocampus and basal nucleus of Meynert. Features of the Klüver-Bucy syndrome (range behaviour and hypermetamorphosis) were significantly associated with lower counts of large neurons in the parahippocampal gyrus and parietal neocortex, but not with more severe plaque or tangle formation or with neuronal loss in the subcortical nuclei. No correction was made for multiple comparisons. These findings may signify decreased cortical inhibition in patients with relatively well preserved subcortical structures who show features suggestive of the Klüver-Bucy syndrome. High PAC scores on the SGRS could reflect more advanced and widespread cerebral pathology in the end stages of AD.
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Chadda, Aditya, Priyanka Madaan, Pawan Kumar, Rajni Sharma, and Naveen Sankhyan. "Kluver-Bucy Syndrome in Children with Traumatic Brain Injury: A Case Report and Review of Literature." Journal of Pediatric Neurosciences 18, no. 3 (2023): 220–25. http://dx.doi.org/10.4103/jpn.jpn_53_23.
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Abstract Background: Kluver-Bucy syndrome (KBS), a symptom complex of hyperorality, dietary pattern changes, hypersexuality, memory disturbances, and visual agnosia, has been infrequently reported following traumatic brain injury (TBI) in children. Materials and Methods: We report a 5-year-old girl presenting with KBS following moderate traumatic brain injury. A literature search was conducted in July 2022 and extended till February 2023 on PubMed, Embase, and Web of Science electronic databases using search terms “children” OR “child” OR “infant” OR “pediatric” OR “adolescent”) AND “Kluver-Bucy syndrome” AND “trauma.” Original research studies, case reports, and case series of children (<18 years of age) with KBS following TBI were identified and evaluated by two authors. Results: Of the 30 articles identified on screening, 12 studies were included and reviewed for phenotypic characterization. Including the index child, 33 children (21 boys) were identified with a median age at presentation of 14 years. Clinically, the commonly described findings were hyperorality (90.9%), placidity (87.9%), hypersexuality (69.7%), hypermetamorphosis (57.6%), dietary pattern changes (54.5%), visual agnosia (51.5%), and memory disturbances (45.5%). Neuroimaging abnormalities were reported in 24 children. Carbamazepine was somewhat useful in 4/5 children where it had been tried. Conclusions: KBS is rare in young children with TBI. A high degree of suspicion is required for the identification of this phenotype in young children. Symptoms are often transitory and carbamazepine may be useful.
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Davis, Donald, and David Wagner. "Biology and systematics of the New World Phyllocnistis Zeller leafminers of the avocado genus Persea (Lepidoptera, Gracillariidae)." ZooKeys 97 (May 11, 2011): 39–73. https://doi.org/10.3897/zookeys.97.753.
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Four New World species of<i> Phyllocnistis</i> Zeller are described from serpentine mines in <i>Persea</i> (Family Lauraceae). <i>Phyllocnistis hyperpersea</i>,<i> </i>new species, mines the upper leaf surfaces of avocado, <i>Persea americana</i> Mill., and red bay, <i>Persea borbonia </i>(L.) Spreng. and ranges over much of the southeastern United States into Central America. <i>Phyllocnistis subpersea</i>,<i> </i>new species, mines the underside and occasionally upper sides of new leaves of <i>Persea borbonia </i>in southeastern United States<i>. Phyllocnistis longipalpa</i>, new species, known only from southern Florida also mines the undersides of new leaves of Persea borbonia. <i>Phyllocnistis perseafolia</i>,<i> </i>new species, mines both leaf surfaces and possibly fruits of <i>Persea americana</i> in Colombia, South America. As in all known species of <i>Phyllocnistis</i>, the early instars are subepidermal sapfeeders in young (not fully hardened) foliage, and the final instar is an extremely specialized, nonfeeding larval form, whose primary function is to spin the silken cocoon, at the mine terminus, prior to pupation. Early stages are illustrated and described for three of the species. The unusual morphology of the pupae, particularly the frontal process of the head, is shown to be one of the most useful morphological sources of diagnostic characters for species identification of <i>Phyllocnistis.</i> COI barcode sequence distances are provided for the four proposed species and a fifth, undescribed species from Costa Rica.
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Davis, Donald, and Prins Jurate De. "Systematics and biology of the new genus Macrosaccus with descriptions of two new species (Lepidoptera, Gracillariidae)." ZooKeys 98 (May 13, 2011): 29–82. https://doi.org/10.3897/zookeys.98.925.
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The new genus <i>Macrosaccus</i> Davis & De Prins is proposed for three species formerly assigned to the genus <i>Phyllonorycter</i>: <i>M. robiniella</i> (Clemens), <i>M. morrisella</i> (Fitch), and <i>M</i>. <i>uhlerella</i> (Fitch); two new, closely related species: <i>M. neomexicanus</i> Davis and <i>M. gliricidius</i> Davis, are also proposed. Descriptions of the adults, pupae, larvae, life histories, and distributions are supplemented with photographs, line drawings, and scanning electron micrographs. Larvae of all species are serpentine/blotch leaf miners on various genera of the plant family Fabaceae. The genus is endemic to the New World, with the invasive species <i>M. robiniella</i> now widely established in Europe.
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Wells, Alice. "Radiation of the microcaddisfly genus Orthotrichia (Trichoptera, Hydroptilidae) in Australia." Contributions to Entomology 73, no. (1) (2023): 113–20. https://doi.org/10.3897/contrib.entomol.73.e105274.
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Orthotrichia is the most species rich of the hydroptilid genera found in Australia, and is postulated to be a relatively recent arrival from the Oriental Region. The genus has an almost worldwide but patchy distribution, represented by close to 280 species among which the Australian fauna of 55 species represents around 20%. In an attempt to understand the radiation of the genus in Australia, this paper explores the morphology and biology of Australian species and discusses a number of contrasts with reports on the biology of congeners in the Northern Hemisphere. The possible significance of these differences in Australian representatives of the genus is suggested to have played a role in the 'success' of the genus in the region. The value of life history studies to our understanding of biodiversity and biogeography is emphasized.
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RICCIERI, Alessandra, Lucrezia SPAGONI, Ming LI, et al. "Comparative genomics provides insights into molecular adaptation to hypermetamorphosis and cantharidin metabolism in blister beetles (Coleoptera: Meloidae)." Integrative Zoology, March 15, 2024. http://dx.doi.org/10.1111/1749-4877.12819.
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AbstractBlister beetles (Coleoptera: Meloidae) are currently subdivided into three subfamilies: Eleticinae (a basal group), Nemognathinae, and Meloinae. These are all characterized by the endogenous production of the defensive terpene cantharidin (CA), whereas the two most derived subfamilies show a hypermetamorphic larval development. Here, we provide novel draft genome assemblies of five species sampled across the three blister beetle subfamilies (Iselma pallidipennis, Stenodera caucasica, Zonitis immaculata, Lydus trimaculatus, and Mylabris variabilis) and performed a comparative analysis with other available Meloidae genomes and the closely‐related canthariphilous species (Pyrochroa serraticornis) to disclose adaptations at a molecular level. Our results highlighted the expansion and selection of genes potentially responsible for CA production and metabolism, as well as its mobilization and vesicular compartmentalization. Furthermore, we observed adaptive selection patterns and gain of genes devoted to epigenetic regulation, development, and morphogenesis, possibly related to hypermetamorphosis. We hypothesize that most genetic adaptations occurred to support both CA biosynthesis and hypermetamorphosis, two crucial aspects of Meloidae biology that likely contributed to their evolutionary success.
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Costa, Raquel, Tiago Mendes, Joana Fontes, Marta Pereira, and Carlos Gonçalves. "Kluver-Bucy Syndrome: A Rare Complication of Herpes Simplex Encephalitis." European Journal of Case Reports in Internal Medicine, July 22, 2021. http://dx.doi.org/10.12890/2021_002725.
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Kluver-Bucy syndrome (KBS) is a characterized by a group of cognitive dysfunctions that include hypersexuality, placidity, hyperorality, memory deficits and hypermetamorphosis. This syndrome is often seen in pathological states that destroy the temporal lobes, normally bilaterally. Herpes simplex encephalitis (HSE) is one of the causes of KBS, as the herpes virus can cause dysfunction/destruction of the temporal lobes. KBS is a very rare syndrome, with just a few cases described in the literature. We present the case of a 21-year-old-man who was diagnosis with KBS after HSE.
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Gama Marques, João, and Josef Finsterer. "A 19q13 microdeletion syndrome presenting with punding, frangophilia, hypermetamorphosis, frontal lobe and vermal hypoplasia, with depression misdiagnosed as schizophrenia, treated with mirtazapine." Psychiatric Genetics, April 21, 2025. https://doi.org/10.1097/ypg.0000000000000394.
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Chromosome 19q13 microdeletion syndrome is a rare genetic disorder characterized by prenatal and postnatal growth retardation, intellectual disability, expressive language impairment, ectodermal dysplasia, and slender habitus. We present a 20-year-old female with hypermetamorphosis, punding, and frangophilia, initially misdiagnosed as schizophrenia. A neuropsychiatric clinical reevaluation of the case led to a diagnosis of melancholic depression and severe intellectual developmental delay. Cerebral MRI revealed hypoplasia of the frontal lobes and cerebellar vermis. Genetic testing at the age of 6 years revealed a 46 XX karyotype with an interstitial deletion of the long arm of chromosome 19 – del(19)(q13.11q13.13). The specific genetic defect, together with the cerebral abnormalities, was considered to be the cause of the unusual psychopathology. Every case of psychosis requires a comprehensive medical workup, as schizophrenia is one of the most commonly mimicked syndromes in medicine.
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Al-Attas, Alawi Aqel, Abdulrahman Yousef Aldayel, Tareq Hamad Aloufi, and Nabil Biary. "Klüver–Bucy syndrome secondary to a nondominant middle cerebral artery ischemic stroke: a case report and review of the literature." Journal of Medical Case Reports 15, no. 1 (2021). http://dx.doi.org/10.1186/s13256-021-02932-0.
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Abstract Background Klüver–Bucy syndrome is a rare and complex neurobehavioral cluster that occurs in humans and results from a temporal lobe lesion. It can be associated with a variety of causes. Stroke is a rarely reported cause of this syndrome. Case presentation In this report, we present the case of a 68-year-old Saudi male who developed Klüver–Bucy syndrome subsequent to a nondominant middle cerebral artery ischemic stroke involving right temporal lobe. The patient manifested most of the Klüver–Bucy syndrome clinical features, including hypersexuality, hyperphagia, hyperorality, and visual hypermetamorphosis (excessive tendency to react to every visual stimulation with a tendency to touch every such stimulus). These neurobehavioral manifestations improved after he was started on treatment. Conclusions The clinical course, anatomical association relying on pathophysiology, and potential treatment have all been deliberated in regard to the rare occurrence of Klüver–Bucy syndrome resulting from temporal lobe pathology.
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Prajjwal, Priyadarshi, Ansh Chaudhary, Raunak Ranjan, and Bhupendra Chaudhary. "Kluver Bucy Syndrome: A Rare Neurological Disease with Several Challenges." Journal of Advances in Medicine and Medical Research, September 22, 2022, 179–84. http://dx.doi.org/10.9734/jammr/2022/v34i2231591.
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Kluver Bucy Syndrome is an extremely rare disorder with a diverse presentation that can be confused with certain common diseases such as Korsakoff’s psychosis, Pick’s disease, and Alzheimer’s dementia. The most common risk factors overall and in children include Herpes simplex encephalitis. In adults, temporal lobe stroke subsequent to several possible etiologies is the second most common cause. Almost any condition that affects the brain (majorly the temporal lobe) can lead to Kluver Bucy Syndrome, making it more difficult to find out the underlying cause. The syndrome is named after Paul Bucy and Heinrich Kluver who discovered it in the monkeys. The various manifestations occur because of the involvement of the amygdala and hippocampus in the temporal lobe and include amnesia which may be anterograde or retrograde, hyperphagia, hyperorality, hypersexuality, visual agnosia, and hypermetamorphosis. The limbic system may get affected causing the above manifestations too. Management of the Kluver Bucy Syndrome is challenging and needs more research as pharmacotherapy and behavioural therapies are the only known interventions to treat patients with KBS currently with not so good outcomes as the delay in the diagnosis makes it not respond to the medications quite a number of times. The diagnosis is mainly clinical and early detection and management of the underlying cause could help provide a good prognosis. In this Review article, we review the conditions leading to Kluver Bucy syndrome, its pathophysiology, clinical features, and the major challenges in its diagnosis.
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Terao, Misato, Makoto Tokuda, and Yoshinori Shintani. "Geographic Variation in Photoperiodic Response for Induction of Pseudopupal Diapause in Epicauta gorhami (Coleoptera: Meloidae)." Environmental Entomology, June 25, 2021. http://dx.doi.org/10.1093/ee/nvab062.
Full textAbstract:
Abstract Geographical variations in the threshold of environmental cues for diapause induction are important in understanding the life history strategy of insects. Larvae of the bean blister beetle, Epicauta gorhami (Coleoptera: Meloidae), feed on grasshopper eggs and undergo hypermetamorphosis. They normally enter diapause as a pseudopupa (fifth instar). However, when the larvae are reared under long-day and high-temperature conditions, they do not enter pseudopupal diapause but pupate directly from the fourth instar. In addition, this insect is known to modify its photoperiodic response for induction of pseudopupal diapause depending on food availability for larvae. In this study, the larval photoperiodic responses for diapause induction were examined for three populations of E. gorhami collected from the northernmost (Morioka, 39.7°N), central (Kazo, 36.1°N), and southernmost (Takanabe, 32.1°N) parts of its distribution range, and the responses were examined under both fully fed and food-deprived (FD) conditions. Diapause incidence decreased in FD larvae for all populations in long-day conditions, and the critical day-lengths for the diapause incidence were calculated as 14.81, 13.97, and 13.99 h in the Morioka, Kazo, and Takanabe populations, respectively. The results indicate the presence of a geographical variation in larval photoperiodic response, in which diapause is induced earlier in higher latitudinal areas. From these results, together with data for developmental threshold temperature and thermal constant, the Morioka and Kazo populations were suggested to have a partial bivoltine life cycle under the conditions of extremely early oviposition season, a sufficient summer temperature, and poor larval food availability.