scholarly journals Anatomical Study of Caudal Vertebrae of Estuary Crocodile (Crocodylus porosus), Chameleon (Bronchocela jubata) and Klarap (Draco volans)

Author(s):  
Aidha Rosel ◽  
Safitri Anggita Tunjung Sari ◽  
Umi Uswatun Hasanah

Reptile tails have a unique function as self defense, autotomy, and maintaining balance while in nature. There are several species that do not have an autotomy function, these species include Estuary Crocodile (Crocodylus porosus), Java Chameleon (Bronchocela jubata), and Klarap (Draco volans). The species is a reptile class that uses its tail with different functions. Differences in function in the tail can be caused by differences in anatomical structure, morphology, and behavioral adaptations that are owned by each species. With the differences in each species, this study aims to get a comparative picture of the caudal vertebrae (coccyx) anatomy of species of estuary crocodile (Crocodylus porosus), java chameleon (Bronchocela jubata), and klarap (Draco volans) so that anatomical comparison can be seen in each species that affects the difference in tail function. The method used in this study is morphological observation with boiled method, X-Ray method, and Alizarin Red's and Alcian Blue staining methods. Research that has been conducted shows that the anatomical structure of caudal vertebrae (coccyx) in estuary crocodile species has a larger bone structure than the bone structure of java chameleon and klarap. The anatomical structure of caudal vertebrae (coccyx) in klarap has a smaller bone structure than estuary crocodile and java chameleon. The anatomical structure of caudal vertebrae (coccyx) in java chameleon species has a longer bone structure than its body length. Caudal vertebrae of these three species do not have tail fracture fields.

2019 ◽  
Vol 12 (1) ◽  
pp. 65-70
Author(s):  
Ketut Dewi Kumara Wati ◽  
Endah Dhyanti Pratiwi ◽  
Yanni Dirgantara ◽  
Cynthia Retna Sartika ◽  
Meita Dhamayanti ◽  
...  

Problem in growth might need to be sought deeper inside the cells to enhance better management. There was a lack of study done in chondrocytes to determine growth problem mechanism. We sought to see the chondrocyte’s life span by observing the cells characteristic in a small container over long period. Human mesenchymal stem cell-derived MSC underwent chondrocyte differentiation procedure in a 96 wells-plate using chondrocyte/osteocyte differentiation medium followed by basal medium. A morphological observation and MTT assay was done to observe apoptosis in chondrocyte in the different wells. MTT assay absorbance was used to determine number of apoptosis. Statistical analysis was done to assess the different of mean absorbance values on different days of observation using Anova folowed by post hoc analysis in SPSS IBM package version 24 , with significance determined at P<0.05. Chondrocytes was confirmed with 1% Alcian blue staining and showed characteristic larger then its parent MSC. The MTT assay showed that chondrocyte absorbance reduce from day 3 through day 14, which was different significantly (anova, P=0.03) and day 14 was the most differed compared to day 7 and day 10 (P=0.02, P=0.017 and P=0.013, respectively). The 2D monolayer chondrocyte underwent total apoptosis on day 14 which can set the limit for observation in further long-term observational cell study.


2021 ◽  
Vol 226 ◽  
pp. 00016
Author(s):  
Farahsani Umi Abida ◽  
Parvez Alam ◽  
Bambang Retnoaji

This study was conducted to determine the effect of detergents on eggs hatchability, survival rates, morphometry and bone structure of Wader Pari fish (Rasbora lateristriata Bleeker, 1854). The fish were treated with detergent solution, with a concentration of 0 mg L−1, 3 mg L−1, 6 mg L−1, 9 mg L−1, 18 mg L−1, 27 mg L−1, and 50 mg L−1, respectively. Each test consisted of one aquarium filled with 30 eggs. The number of eggs hatched was counted and these were treated continually for 1.5 mo to determine fish survival rates, morphology, growth rates and bone structure assays. The bone structure assay was prepared with Alizarin’s Red-Alcian Blue staining. The results show that detergent treatments at 0 mg L−1, 3 mg L−1, 6 mg L−1, 9 mg L−1 did not significantly affect hatchability, survival rate, or morphometry of either egg or fish (p > 0.05). However, a higher concentration at 18 mg L−1, 27 mg L−1, and 50 mg L−1, significantly affected the fish egg hatchability and survivability. Moreover, fish vertebral structures were normal at treatments of 0 mg L−1, 3 mg L−1, 6 mg L−1, whereas at 9 mg L−1, was caused abnormal vertebral structures.


2016 ◽  
Vol 5 (1) ◽  
pp. 19
Author(s):  
Muhammad Ja’far Luthfi

<p>Skeletal staining is an important method in anatomical study. The aim of the research was to develop staining and clearing method of Reptilian skeleton using Alizarin Red S-Alcian Blue. The specimen were eviscerated, fixed, stained, cleared, and keep in glycerine solution. This modified double-staining has successfully stain bone and cartilage of Reptilian.</p>


2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
Jingyu Li ◽  
Junjie Xue ◽  
Yan Jing ◽  
Manyi Wang ◽  
Rui Shu ◽  
...  

As the initial part in the development of osteoarthritis (OA), subchondral bone sclerosis has been considered to be initiated by excess mechanical loading and proven to be correlated to other pathological changes. Sclerostin, which is an essential mechanical stress response protein, is encoded by the SOST gene. It is expressed in osteocytes and mature chondrocytes and has been proven to be closely correlated to OA. However, the relationship and mechanism between the SOST gene and the development of OA remain unclear. The aim of the present study was to investigate the role of the SOST gene in OA pathogenesis in the subchondral bone. A knee anterior cruciate ligament transection (ACLT) mouse osteoarthritis (OA) model on SOST-knockout (SOST KO) and wild-type (WT) mice was established. The pathogenic and phenotypic changes in the subchondral bone were investigated by histology, micro-CT, immunohistochemistry, TRAP staining, Masson staining, and Toluidine blue staining. It was found that sclerostin expression decreased in both the calcified cartilage and mineralized subchondral structures during the development of OA. Joint instability induced a severe cartilage degradation phenotype, with higher OARSI scores in SOST KO mice, when compared to WT mice. SOST KO mice with OA exhibited a higher BMD and BV/TV ratio, as well as a higher rate of bone remodeling and TRAP-positive cell number, when compared to the WT counterparts, but the difference was not significant between the sham-operation groups. It was concluded that loss of sclerostin aggravates knee OA in mice by promoting subchondral bone sclerosis and increasing catabolic activity of cartilage.


1967 ◽  
Vol 125 (3) ◽  
pp. 409-428 ◽  
Author(s):  
Betsy G. Bang ◽  
Frederik B. Bang

Infectious laryngotracheitis can be produced in chickens as an experimental model of severe nonfatal rhinitis and sinusitis. Inoculated intranasally into unanesthetized baby chicks it remains limited to the nasal fossa, produces acute desquamation of all nasal epithelia, results in functional recovery of the respiratory epithelium, but leaves important residual abnormalities. From the earliest recognizable lesions through 4½ months' convalescence, the principal changes are as follows: 1. Initial lesions, or small syncytia of intranuclear "inclusions", first identifiable in the mucociliated cells of the shallowest portion of the epithelium at about 21 hr postinoculum (the inner surface of the maxillary conchal scroll). 2. Acute sloughing, (about 3 to 7 days), marked by: (a) spread of lesions from cell to cell via multinucleated "giant cells" which progressively slough and desquamate respiratory, olfactory, and sinus epithelia, epithelial neural elements and blood vessels; (b) appearance of numbers of eosinophilic leukocytes along the basement membrane at the sites of lesions just previous to sloughing; intensive infiltration of the submucosa with small lymphocytes after sloughing begins; (c) histochemical change in the intracellular mucus of the cells which comprise the syncytia: this mucus stains with Alcian blue alone when stained with AB-PAS; and (d) all cartilages of the maxillary conchae become flaccid, and the cell nuclei and matrix lose both basophilic and Alcian blue staining properties, effects which recede by about the 8th day. 3. Repair (about 8 to 21 days), marked by rapid initial spread of a sheet of epithelial cells over the infiltrated subrmucosa, appearance of numbers of plasma cells circulating in the tissues, formation of encapsulated secondary nodules, and mucosal adhesions. 4. Convalescence (about 1 to 4½ months when experiments terminated), marked by functional restoration of the mucociliary lining of the nasal fossa. However, at 4½ months eight specimens all show complete metaplasia of the olfactory organ (end nerves, supporting cells, and glands of Bowman) to mucociliated epithelium, all show abnormal formation and alignment of mucous acini, and about 50% have severe persistent sinusitis.


Parasitology ◽  
1969 ◽  
Vol 59 (3) ◽  
pp. 505-518 ◽  
Author(s):  
R. E. Howells ◽  
D. A. Erasmus

Regional differences in the tegumentary tissue of Moniezia expansa, as revealed at the light-microscope level by histological and histochemical techniques, are described and evidence for secretory activity by the interproglottidal glands is presented.In very immature proglottides the interproglottidal glands are at the ‘precryptic’ stage. Gland cells may be differentiated from other tegumentary cells by their high RNA content and in certain gland cells the presence of an alcian blue staining material.In mature proglottides the glands consist of rosette-like clusters of cells around crypt-like intuckings of the tegument. Two types of cells are found in the gland, small alcian blue-staining cells which are most numerous in the neck region of the crypt, and larger cells, the predominant gland cells, which do not stain with alcian blue but possess non-specific esterase activity. No other tegumentary cells in Moniezia exhibit this activity. Esterase and phosphatase activity is found in the tegument and crypt of the glands and in the interproglottidal folds.The non-enzyme histochemistry confirms and extends the observations of previous workers.Cytochrome oxidase and succinic dehydrogenase were detected in the tegumentary cells and tegument. Very strong reactions were given in the neck and scolex, with a progressive diminution of activity posteriorly along the strobila. Very low activities were recorded in the tegument of the glands.


1997 ◽  
Vol 110 (21) ◽  
pp. 2691-2701 ◽  
Author(s):  
N.S. Stott ◽  
C.M. Chuong

Members of the vertebrate hedgehog gene family (HH) are involved in patterning and modulation of differentiation. Recently it has been shown that ectopic expression of HH gene family members in vivo blocks chondrocyte maturation through activation of a parathyroid hormone related peptide (PTHrP) dependent negative regulatory loop in the perichondrium. However, the direct effect of HH on chondrocyte maturation has not been tested. Here, we studied the effect of retroviral overexpression of the chicken sonic hedgehog gene (Shh) on the growth and maturation of limb bud cells in micromass cultures. Shh is neither expressed nor required for the initiation of cellular condensation in normal micromass cultures. With Shh over-expression, micromass cultures developed novel tightly whorled nodules in addition to the normal Alcian Blue positive cartilage nodules. We characterized the new nodules and showed that they are strongly positive for alkaline phosphatase, enriched in type X collagen and weakly positive for Alcian Blue staining. Shh overexpression also increased cell proliferation, but this cannot account for the formation of the new nodules. This current study shows that misexpression of Shh in in vitro chondrogenic cultures promotes characteristics of hypertrophic chondrocytes. Thus HH has two complementary functions; a direct positive effect on chondrocyte hypertrophy in the absence of PTHrP pathway, and an indirect negative feedback loop through PTHrP to prevent other less differentiated chondrocytes from becoming hypertrophic. These two complementary actions of HH coordinate the progression of cartilage maturation.


Development ◽  
1986 ◽  
Vol 94 (1) ◽  
pp. 189-205
Author(s):  
Betty C. Gallagher

The developing chick lung was examined in the electron microscope for intimate cell contacts between epithelium and mesenchyme, discontinuities in the basal lamina and substructure of the basement membrane. Cell filopodia were seen which crossed the basal lamina from both the epithelial and the mesenchymal cells. Ruthenium red and tannic acid staining of the basal lamina of the chick lung showed it to be thin and sometimes discontinuous at the tips compared to the more substantial basal lamina in the interbud areas. The bilaminar distribution of particles seen with ruthenium red is similar to those seen in the cornea and lens. With tannic acid staining, filaments could be seen which crossed the lamina lucida and connected with the lamina densa. Spikes perpendicular to the basal lamina were sometimes seen with a periodicity of approximately 110 nm. Alcian blue staining revealed structure similar to that seen by ruthenium red staining in the salivary and mammary glands, although the interparticle spacing was closer. Collagen was located in areas of morphogenetic stability, as has been seen by other investigators in different tissues. Collagen was coated with granules (probably proteoglycan) at periodic intervals when stained with ruthenium red. The fibrils were oriented circumferentially around the mesobronchus and were assumed to continue into the bud, but the fibres curve laterally at the middle of a bud. This orientation is opposite to that seen by another investigator in the mouse lung. In general, the observations made in the avian lung are similar to those seen in branching mammalian tissue. It is likely, therefore, that the chick lung uses strategies in its morphogenesis that are similar to those that have been elucidated previously in developing mammalian organs.


2017 ◽  
Vol 25 (6) ◽  
pp. 533-535 ◽  
Author(s):  
Francesco Nesa ◽  
Luca Poggi ◽  
Stefano Ferrero ◽  
Alessandro Del Gobbo

Extensive extracellular mucin deposition is a rare pathological thyroid condition with 6 cases described in literature so far. We report another case of a 67-year-old woman, discussing histopathological features, and review the literature. Our findings showed a diffuse mucin deposition in the stromal compartment of thyroid parenchyma. Histochemical stainings showed positivity for Alcian blue staining, but not for periodic acid–Shiff staining. Our case is peculiar because this mucin deposition was associated with benign nodular hyperplasia, in contrast with the other 6 reports, which described the same stromal alterations associated with benign or malignant thyroid tumors.


2018 ◽  
Author(s):  
Νικόλαος Αρμακόλας

Το πεπτίδιο Ec (PEc) του IGF-1Ec (IGF-1Ec) επάγει την κινητοποίηση των ανθρωπίνων μεσεγχυματικών βλαστικών κυττάρων (hMSC) και ενεργοποιεί την εξωκυτταρική κινάση 1 και 2 (ERK 1/2) διαφόρων κυττάρων. Σκοπός της παρούσας μελέτης ήταν η διερεύνηση της επιδρασης του PEc στην κινητοποίηση και τη διαφοροποίηση των hMSCs, καθώς και η δυνατότητα εφαρμογής του σε συνδυασμό με τον TGF-β1 (TGF-β1) στην επιδιόρθωση του αρθρικού χόνδρου. Τα αποτελέσματα της εξωγενούς χορήγησης του ΡΕc και του ΤGF-β1, ξεχωριστά και σε συνδυασμό, σε hMSCs εκτιμήθηκαν χρησιμοποιώντας trypan blue assay, reverse transcription-quantitative polymerase chain reaction, western blot analysis, Alcian blue staining, wound healing assays και migration/invasion assays. Προσδιορίστηκε ότι το PEc εμπλέκεται στη διαδικασία διαφοροποίησης των hMSCs προς υαλώδη χόνδρο. Η χορήγηση PEc ή / και TGF-β1 σε hMSCs έδειξε συγκρίσιμη εναπόθεση χονδρικής θεμέλειας ουσίας. Ακόμα, η χορήγηση του ΡΕc σε συνδυασμό με τον ΤGF-β1 συσχετίστηκε με μια σημαντική αύξηση στην κινητοποίηση των hMSC σε σύγκριση με την χορήγηση μόνο του TGF-β1 ή του ΡEc (Ρ <0,05). Επομένως, το ΡΕc φαίνεται να διευκολύνει in vitro την κινητοποίηση των hMSC και την διαφοροποίηση τους προς χονδροκύτταρα, ενισχύοντας το ρόλο του ΤGF-β1.


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