A Doughnut-shaped Vessel from Kaminaljuyú, with a Distributional Analysis of This Unusual Form

1963 ◽  
Vol 28 (3) ◽  
pp. 386-389 ◽  
Author(s):  
Lee A. Parsons
Keyword(s):  
Distributional Analysis ◽  
Good Marker ◽  
Unusual Form ◽  
Doughnut Shape

AbstractA rare ceramic form commonly called the doughnut-shape is reported for Kaminaljuyú, Guatemala, Miraflores phase. This specimen provides another example of the stucco technique on Pre-Classic pottery. A trial distribution of doughnut-shaped vessels is plotted for the Americas. Although this chart is based upon only a few published illustrations, certain deductions can be made as to the value of this form as a horizon marker. The horizontal variety of doughnut vessel may be a good marker for the Late Pre-Classic horizon in Mesoamerica.

Ultrastructural Localization of Acetylcholinesterase in the Arcuate Nucleus and Median Eminence of the Rat

1977 ◽  
Vol 35 ◽  
pp. 440-441
Author(s):  
K.A. Carson ◽  
C.B. Nemeroff ◽  
M.S. Rone ◽  
J.S. Kizer ◽  
J.S. Hanker
Keyword(s):  
Choline Acetyltransferase ◽  
Median Eminence ◽  
Arcuate Nucleus ◽  
Cholinergic Neurons ◽  
Ultrastructural Localization ◽  
Male Rats ◽  
Neonatal Rats ◽  
Good Marker ◽  
Chemical Studies ◽  
High Doses

Biochemical, physiological, pharmacological, and more recently enzyme histo- chemical data have indicated that cholinergic circuits exist in the hypothalamus. Ultrastructural correlates of these pathways such as acetylcholinesterase (AchE) positive neurons in the arcuate nucleus (ARC) and stained terminals in the median eminence (ME) have yet to be described. Initial studies in our laboratories utilizing chemical lesioning and microdissection techniques coupled with microchemical and light microscopic enzyme histo- chemical studies suggested the existence of cholinergic neurons in the ARC which project to the ME (1). Furthermore, in adult male rats with Halasz deafferentations (hypothalamic islands composed primarily of the isolated ARC and the ME) choline acetyltransferase (ChAc) activity, a good marker for cholinergic neurons, was not significantly reduced in the ME and was only somewhat reduced in the ARC (2). Treatment of neonatal rats with high doses of monosodium 1-glutamate (MSG) results in a lesion largely restricted to the neurons of the ARC.

Avaliação da Eficácia da Administração de Dexametasona ou Metilprednisolona para Produzir Osteoporose em Ratas/ Evaluating the Effectiveness of Dexamethasone or Methylprednisolone to Produce Osteoporosis in Rats

2011 ◽  
Vol 1 (1) ◽  
pp. 22
Author(s):  
Nilo César do Vale Baracho ◽  
Alexandre Mata de Paula ◽  
Roberto Franzini Junior ◽  
Rogério Mariotto Bitetti da Silva ◽  
Bruno Appolari ◽  
...  
Keyword(s):  
Bone Mass ◽  
Disease Incidence ◽  
Public Health Problem ◽  
Bone Thickness ◽  
Good Marker ◽  
Significant Difference ◽  
Group Control ◽  
Successful Induction ◽  
Calcium Phosphorus ◽  
De Medicina

Introdução: A osteoporose é considerada um grave problema de saúde pública em todo o mundo. No Brasil ainda não há dados estatísticos sobre a real incidência desta doença. Os glicocorticóides representam uma classe de drogas muito usada, sendo que podem influenciar significativamente a massa óssea. Entretanto, após tratamento com glicocorticóides em ratos, esses podem ou não apresentar alterações na massa óssea. Objetivo: Avaliar a eficácia da administração de dexametasona ou metilprednisolona em produzir osteoporose em ratas. Métodos: Vinte e quatro ratas, oriundas do biotério da Faculdade de Medicina de Itajubá, foram utilizadas e divididas em três grupos: controle, metilprednisolona e dexametasona. Foram avaliados íons e proteínas totais sanguíneos e feita a análise histopatológica de tecido ósseo. Resultados e conclusão: Pela análise histológica da espessura trabecular óssea, houve redução da massa óssea dos grupos tratados com glicocorticóides em comparação com o grupo controle, evidenciando o sucesso da indução de osteoporose. Além disso, houve uma maior redução da massa óssea no grupo tratado com dexametasona, em comparação com o grupo tratado com metilprednisolona. A análise bioquímica de cálcio, fósforo, magnésio e proteínas totais não sofreram diferença significativa entres os grupos, não sendo um bom marcador para remodelamento ósseo e para diagnóstico de osteoporose.Evaluating the Effectiveness of Dexamethasone or Methylprednisolone to Produce Osteoporosis in RatsIntroduction: Osteoporosis is considered a serious public health problem in worldwide. In Brazil we do not have statistics on the real disease incidence. Glucocorticoids are a class of drugs widely used, and can significantly influence bone mass. However, after treatment with glucocorticoids in rats, these may or may not show changes in bone mass. Objective: Evaluating the effectiveness of dexamethasone or methylprednisolone to produce osteoporosis in rats. Methods: Twenty-four rats, originated from the vivarium of the Faculty of Medicine Itajubá were used and divided into three groups: control, methylprednisolone and dexamethasone. Ions was evaluated blood and histopathology of bone tissue. Results and conclusion: by histologic analysis of trabecular bone thickness, a reduction of the mass bone in the groups treated with glucocorticoids compared with the group control, demonstrating the successful induction of osteoporosis. Furthermore, there was a greater reduction in bone mass in the group treated with dexamethasone compared with the group treated with methylprednisolone. The analysis biochemistry of calcium, phosphorus, magnesium and total protein did not undergo significant difference among the groups, there is a good marker for bone remodeling and osteoporosis diagnosis.

scholarly journals Necrotic plaques in an elderly male

JRSM Open ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 205427042098145
Author(s):  
Bindi Gaglani ◽  
Ian Logan ◽  
Faris Kubba
Keyword(s):  
Diabetes Mellitus ◽  
Genetic Predisposition ◽  
Unusual Case ◽  
Renal Diseases ◽  
Elderly Male ◽  
Unusual Form ◽  
Underlying Diseases ◽  
Reactive Perforating Collagenosis ◽  
Giant Form

Reactive perforating collagenosis is commonly recognised as an unusual form of transepithelial elimination of collagen and elastin fibres which are extruded through the epidermis in patients with a genetic predisposition or underlying diseases, such as diabetes mellitus or renal diseases. We present the unusual case of an 87-year-old diabetic male with a giant form of reactive perforating collagenosis and review the available literature.

scholarly journals Phylloid Hypermelanosis: An Unusual Form of Pigmentary Mosaicism

Dermatology ◽  
2010 ◽  
Vol 220 (2) ◽  
pp. 183-185 ◽  
Author(s):  
Rudolf Happle
Keyword(s):  
Unusual Form ◽  
Pigmentary Mosaicism

Hemophagocytic Syndrome as an Unusual Form of Presentation of Tuberculosis in a Hemodialysis Patient

2000 ◽  
Vol 20 (3) ◽  
pp. 214-216 ◽  
Author(s):  
I. Castellano ◽  
J.R. Gómez-Martino ◽  
T. Hernández ◽  
L. Mateos ◽  
C. Argüello
Keyword(s):  
Hemophagocytic Syndrome ◽  
Hemodialysis Patient ◽  
Unusual Form

Unusual form of coarctation of the distal thoracic aorta

2001 ◽  
Vol 72 (4) ◽  
pp. 1395-1396 ◽  
Author(s):  
Rodolfo A Neirotti ◽  
Donald D Malcolm ◽  
George T Sugiyama ◽  
Gwendolyn R Fosse
Keyword(s):  
Thoracic Aorta ◽  
Unusual Form
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