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Elon Richman, Nathan J Skoller, Bernice Fokum, Brandi A Burke, Chelsea A Hickerson, Robert O Cotes
: Synthetic cathinones are a class of novel psychoactive substances. α-Pyrrolidinopentiophenone (α-PVP), or "Flakka", is one of these substances. Users often present acutely psychotic or agitated. We present the case of a 20-year-old male without prior psychiatric history who was brought to the hospital by his family because of increasingly bizarre and erratic behavior after reported ingestion of Flakka. What ensued was a prolonged course of psychosis and severe catatonia. Synthetic cathinones are thought to cause catatonia in approximately 1% of cases...
March 12, 2018: Journal of Addiction Medicine
Louis Sass, Juan P Borda, Luis Madeira, Elizabeth Pienkos, Barnaby Nelson
The self-disorder model offers a unifying way of conceptualizing schizophrenia's highly diverse symptoms (positive, negative, disorganized), of capturing their distinctive bizarreness, and of conceiving their longitudinal development. These symptoms are viewed as differing manifestations of an underlying disorder of ipseity or core-self: hyper-reflexivity/diminished-self-presence with accompanying disturbances of "grip" or "hold" on reality. Recent revision to this phenomenological theory, in particular distinguishing primary-vs-secondary factors, offers a bio-pheno-social model that is consistent with recent empirical findings and offers several advantages: (1) It helps account for the temporal variations of the symptoms or syndrome, including longitudinal progression, but also the shorter-term, situationally reactive, and sometimes defensive or quasi-intentional variability of symptom-expression that can occur in schizophrenia (consistent with understanding some aspects of ipseity-disturbance as dynamic and mutable, involving shifting attitudes or experiential orientations)...
February 5, 2018: Schizophrenia Bulletin
Ravi Kiran Deevi, Arman Javadi, Jane McClements, Jekaterina Vohhodina, Kienan Savage, Maurice Bernard Loughrey, Emma Evergren, Frederick Charles Campbell
Histological grading provides prognostic stratification of colorectal cancer (CRC) by scoring heterogeneous phenotypes. Features of aggressiveness include aberrant mitotic spindle configurations, chromosomal breakage, and bizarre multicellular morphology, but pathobiology is poorly understood. Protein kinase C zeta (PKCz) controls mitotic spindle dynamics, chromosome segregation, and multicellular patterns, but its role in CRC phenotype evolution remains unclear. Here, we show that PKCz couples genome segregation to multicellular morphology through control of interphase centrosome anchoring...
March 9, 2018: Journal of Pathology
Kiyong Na, Ji-Youn Sung, Hyun-Soo Kim
BACKGROUND/AIM: Severe nuclear atypia can be associated with condyloma acuminatum. In this study, we investigated nine cases of perianal condyloma acuminatum with severe nuclear atypia and determined whether severe nuclear atypia is sufficient for the diagnosis of high-grade squamous intraepithelial lesion (HSIL). MATERIALS AND METHODS: The clinical data and pathological features of the nine patients were collected. p16 Immunostaining and human papillomavirus genotyping were also performed...
March 2018: Anticancer Research
Natascia Cerrato, Gilberto Calzolari, Pietro Tizzani, Emma Actis Perinetto, Antonio Dellavalle, Enzo Aluffi
Yew leaves poisoning is a rare life-threatening intoxication, whose diagnosis can be difficult. Initial symptoms are nausea, vomiting, abdominal pain, dizziness, tachycardia, muscle weakness, confusion, beginning within 1 hr from ingestion and followed by bradycardia, ventricular arrhythmias, ventricular fibrillation, severe hypotension, and death. Taxine-derived alkaloids are responsible for the toxicity of the yew leaves, blocking sodium and calcium channels, and causing conduction abnormalities. Because of lack of a specific antidote and limited efficacy of common antiarrhythmic drugs, prompt diagnosis, detoxification measures, and immediate hemodynamic support (also with transvenous cardiac stimulation) are essential...
February 28, 2018: Annals of Noninvasive Electrocardiology
Irene Gullo, Vitor Devezas, Manuela Baptista, Luzia Garrido, Sérgio Castedo, Rui Morais, Xiaogang Wen, Elisabete Rios, Jorge Pinheiro, Inȇs Pinto-Ribeiro, Rui M Ferreira, John Preto, João Santos-Antunes, Margarida Marques, Miquel Campos, Filipe Almeida, Maria do Céu Espinheira, Jorge Amil Dias, Céu Figueiredo, Carla Oliveira, Eunice Trindade, Fátima Carneiro
BACKGROUND AND AIMS: The time-course for the development of clinically significant hereditary diffuse gastric cancer (HDGC) is unpredictable. Little is known about the progression from pre-clinical, indolent lesions to widely invasive, aggressive phenotypes. Gastro-endoscopy often fails to detect early lesions and risk-reducing/prophylactic total gastrectomy (PTG) is the only curative approach. We present a HDGC family with early-onset disease, in which clinical and histological findings provided insight into the understanding of different HDGC phenotypes...
February 15, 2018: Gastrointestinal Endoscopy
Cagri Yuksel, Seheryeli Yilmaz, Ariana Nesbit, Gresa Carkaxhiu, Caitlin Ravichandran, Paola Salvatore, Samira Pingali, Bruce Cohen, Dost Ongur
Bizarre delusions (BizD) are not specific to schizophrenia (SZ) and can be found in other psychotic disorders. However, to date, there are no studies investigating socio-demographic and clinical characteristics associated with BizD across the psychosis spectrum. In this study 819 subjects with a diagnosis of SZ (n = 250), schizoaffective disorder (SZA) (n = 228) and bipolar I disorder (BD) (n = 341) were included. Patients with history of BizD and with no BizD were compared with respect to socidemographic and clinical variables, and predictors of BizD were explored...
February 9, 2018: Asian Journal of Psychiatry
J Ferri, J M Ford, B J Roach, J A Turner, T G van Erp, J Voyvodic, A Preda, A Belger, J Bustillo, D O'Leary, B A Mueller, K O Lim, S C McEwen, V D Calhoun, M Diaz, G Glover, D Greve, C G Wible, J G Vaidya, S G Potkin, D H Mathalon
BACKGROUND: Schizophrenia (SZ) is a severe neuropsychiatric disorder associated with disrupted connectivity within the thalamic-cortico-cerebellar network. Resting-state functional connectivity studies have reported thalamic hypoconnectivity with the cerebellum and prefrontal cortex as well as thalamic hyperconnectivity with sensory cortical regions in SZ patients compared with healthy comparison participants (HCs). However, fundamental questions remain regarding the clinical significance of these connectivity abnormalities...
February 15, 2018: Psychological Medicine
M Sun, J G Liu, Q Y Weng, L Yu, J Wang
Objective: To investigate the clinicopathologic features, differential diagnosis and biological behavior of pleomorphic leiomyosarcoma (PLMS) and dedifferentiated leiomyosarcoma (DLMS). Methods: Forty-nine cases were collected from November 2007 to December 2016, including eight that diagnosed at Fudan University Shanghai Cancer Center, and 41 consultation cases. The clinical findings and pathologic features were reviewed. Immunophenotype was obtained in 33 cases and follow-up information was available in 38 cases...
February 8, 2018: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
Harry C Evans, Simon L Elliot, Robert W Barreto
Classical biological control has been used extensively for the management of exotic weeds and agricultural pests, but never for alien insect vectors of medical importance. This simple but elegant control strategy involves the introduction of coevolved natural enemies from the centre of origin of the target alien species. Aedes aegypti - the primary vector of the dengue, yellow fever and Zika flaviviruses - is just such an invasive alien in the Americas where it arrived accidentally from its West African home during the slave trade...
March 2018: Memórias do Instituto Oswaldo Cruz
Prashant Ramteke, Sanjeev Chitragar, Ashok Singh, Saumyaranjan Mallick, Sandeep R Mathur, Deepali Jain, Venkateswaran K Iyer
Background: Anaplastic large-cell lymphoma (ALCL) is a rare subtype of non-Hodgkin's lymphoma (NHL) characterized by the presence of unusual giant cells. It is a CD30+lymphoma of T-cells lineage, which shows anaplastic lymphoma kinase-nucleophosmin (ALK-NPM) rearrangement. ALCL on fine needle aspiration cytology (FNAC) shows unusually large and bizarre tumor cells. Materials and Methods: All aspirates seen over a 6-year period from November 2009 to November 2015 in which a diagnosis of ALCL or Hodgkin's lymphoma (HL) with bizarre giant cells were suspected on cytomorphology were prospectively selected...
January 2018: Journal of Cytology
Takeo Nakaya, Hisashi Oshiro, Ayako Takigami, Yoshihiko Kanai, Kenji Tetsuka, Koichi Hagiwara, Hirofumi Fujii, Shunsuke Endo, Akira Tanaka
RATIONALE: Solitary fibrous tumors are mesenchymal tumors presenting as fibroblastic neoplasms with prominent branching vascular patterns, which are often generated from the pleura. Most solitary fibrous tumors are benign; however, some can turn malignant. High-grade sarcomas from solitary fibrous tumors include multidirectional histopathological components. PATIENT CONCERNS: We describe our experience of a giant high-grade sarcoma with mixed components generated from a solitary fibrous tumor of the pleura in a 67-year-old female patient presenting with cough and left-sided chest pain...
December 2017: Medicine (Baltimore)
Navin K Kesari, Tiffany Fleet, Bader Alenzi, J Clay Goodman
No abstract text is available yet for this article.
January 30, 2018: Neurology
Na Cheng, Jianning Chen, Yuhang Pan, Ye Jiang, Jing Zhou, Chunkui Shao
BACKGROUND: Splenic hamartoma is a rare benign vascular proliferative lesion composed of unorganized sinusoid-like channels lined with plump or flat endothelial cells and characterized by a CD8-positive immunophenotype of the lining cells. Scattered bizarre stromal cells can be found in some splenic hamartomas. The presence of splenic hamartoma with bizarre stromal cells is extremely rare and these bizarre cells make it possible to be regarded as a malignancy. Recognition of this rare histologic variant will help to avoid diagnostic confusion and overtreatment of this benign entity...
January 22, 2018: Diagnostic Pathology
Alae Guerrouani, Mouna Kairouani
Even if gossypibomas are extremely rare in the Oro-Maxillofacial region, they should be evoked in bizarre tumors when repeated histology tests are not contributive, especially in patients with a history of dento-sinusal surgery. As it is recommended in general surgery, gauzes should be carefully counted when used in dentistry.
January 2018: Clinical Case Reports
Simon L Goodman
The biological literature reverberates with the inadequacies of commercial research-tool antibodies. The scientific community spends some $2 billion per year on such reagents. Excellent accessible scientific platforms exist for reliably making, validating and using antibodies, yet the laboratory end-user reality is somehow depressing - because they often "don't work". This experience is due to a bizarre and variegated spectrum of causes including: inadequately identified antibodies; inappropriate user and supplier validation; poor user training; and overloaded publishers...
January 17, 2018: New Biotechnology
Dongyu Hu, Julia A Clarke, Chad M Eliason, Rui Qiu, Quanguo Li, Matthew D Shawkey, Cuilin Zhao, Liliana D'Alba, Jinkai Jiang, Xing Xu
The Jurassic Yanliao theropods have offered rare glimpses of the early paravian evolution and particularly of bird origins, but, with the exception of the bizarre scansoriopterygids, they have shown similar skeletal and integumentary morphologies. Here we report a distinctive new Yanliao theropod species bearing prominent lacrimal crests, bony ornaments previously known from more basal theropods. It shows longer arm and leg feathers than Anchiornis and tail feathers with asymmetrical vanes forming a tail surface area even larger than that in Archaeopteryx...
January 15, 2018: Nature Communications
Lisa Siegler, Ramona Erber, Stefanie Burghaus, Tobias Brodkorb, David Wachter, Nafisa Wilkinson, James Bolton, Helen Stringfellow, Florian Haller, Matthias W Beckmann, Arndt Hartmann, Abbas Agaimy
Hereditary leiomyomatosis and renal cell carcinoma (HLRCC) syndrome is a rare autosomal dominant disease caused by germline mutations in the fumarate hydratase (FH) gene. Affected individuals develop cutaneous and uterine leiomyomas and aggressive RCC. To date, only few publications described the frequency and morphology of FH-deficient uterine leiomyomas. We reviewed 22 cases collected over 8 years from routine and consultation files based on distinctive histological features. In addition, we screened 580 consecutive uterine leiomyomas from 484 patients, 23 extra-uterine and 8 uterine leiomyosarcomas, and 6 leiomyomas with bizarre nuclei for FH loss using immunohistochemistry (IHC) on tissue microarrays (TMAs)...
January 13, 2018: Virchows Archiv: An International Journal of Pathology
Andy M Reynolds
Lévy walks are a mathematical construction useful for describing random patterns of movement with bizarre fractal properties that seem to have no place in biology. Nonetheless, movement patterns resembling Lévy walks have been observed at scales ranging from the microscopic to the ecological. They have been seen in the molecular machinery operating within cells during intracellular trafficking, in the movement patterns of T cells within the brain, in DNA, in some molluscs, insects, fish, birds and mammals, in the airborne flights of spores and seeds, and in the collective movements of some animal groups...
January 11, 2018: Biology Open
Chittaranjan Andrade, Yameni Prasad, Aathira Devaraj, Ekta Franscina Pinto, Lekhansh Shukla
INTRODUCTION: Electroconvulsive therapy (ECT) is associated with memory deficits on neuropsychological assessment. The association of ECT with nonmemory cognitive deficits has been poorly studied. METHODS: We present a 40-year-old woman who showed a bizarre form of spatial cognition impairment on a subtest of the Tactual Performance Test (TPT) after recovering from depression with 6 alternate day, thrice-weekly, inpatient ECT treatments. This woman was part of a naturalistic, nonblind study that examined nonmemory cognitive deficits in antidepressant-treated depressed patients who did and did not receive ECT...
January 11, 2018: Journal of ECT
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