{"title":"Comparative analysis of <i>in vivo</i> bio-integration of three hyaluronic acid-based fillers for 26 weeks: a histological study.","authors":"Baoji Song, Qiqi Chen","doi":"10.1080/01478885.2024.2369967","DOIUrl":"10.1080/01478885.2024.2369967","url":null,"abstract":"<p><p>Stabilized hyaluronic acid (HA), produced through diverse cross-linking technology and formulated as an injectable gel, has found widespread utilization in aesthetic industry. Cross-linked HA essentially constitutes a gel particle composition formed by numerous viscoelastic particulates. Various product formulations yield HA gels with distinct properties, including particle size, viscoelasticity, and interaction forces between particles. While previous studies have primarily concentrated on the biological safety and macroscopic expression of fillers, limited research exists on the internal mechanisms governing their macro-performance. This study selected three common dermal fillers for analysis, establishing an animal model to assess their <i>in vivo</i> interaction with surrounding tissues and explore their internal mechanisms. The findings revealed that particle size plays a crucial role in tissue integration.</p>","PeriodicalId":15966,"journal":{"name":"Journal of Histotechnology","volume":" ","pages":"154-165"},"PeriodicalIF":0.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141633686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Christa E Barrett, Ian Evans, Timothy Morgan, Alicia K Olivier
{"title":"Novel processing and staining methodology of bottlenose dolphin (<i>Tursiops truncatus)</i> teeth for age determination.","authors":"Christa E Barrett, Ian Evans, Timothy Morgan, Alicia K Olivier","doi":"10.1080/01478885.2024.2327155","DOIUrl":"10.1080/01478885.2024.2327155","url":null,"abstract":"<p><p>Age determination of bottlenose dolphins (<i>Tursiops truncatus</i>) is a critical tool in understanding both individual and population health. There are many methods of aging bottlenose dolphins including analysis of teeth, pectoral flipper radiographs, and epigenetics. The most common and oldest method for aging toothed cetaceans is the counting of growth layer groups (GLGs) in the teeth. Current techniques have technical and repeatability challenges. Therefore, a processing technique that results in better resolution of GLGs is needed. This study compares different decalcifications and different histochemical staining techniques. Decalcification was done using 10% EDTA, Kristensen's decalcification, and Rapid Decalcification Solution (RDO). Following decalcification and routine processing, GLGs were assessed using Hematoxylin and Eosin (H&E), hematoxylin, Giemsa, Wright-Giemsa, Toluidine Blue (T-Blue), Masson's Trichrome, and Congo Red staining techniques. Decalcification with Kristensen's and staining with Masson's Trichrome and Congo Red were determined to best highlight GLGs. This processing and staining was then applied to a sample population of 102 bottlenose dolphins that were evaluated independently and blindly by two observers. Of the 102 dolphin samples, 13 (12.7%) were unable to age due to no clear distinction or distortion between GLGs.</p>","PeriodicalId":15966,"journal":{"name":"Journal of Histotechnology","volume":" ","pages":"146-153"},"PeriodicalIF":0.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140094189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Addressing the histotechnologist shortage through improved classification and recognition.","authors":"Henley Marcelus, Daniel Packert","doi":"10.1080/01478885.2024.2424049","DOIUrl":"10.1080/01478885.2024.2424049","url":null,"abstract":"","PeriodicalId":15966,"journal":{"name":"Journal of Histotechnology","volume":" ","pages":"143-145"},"PeriodicalIF":0.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142567502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Joseph A. Esposito, Camryn J. Vader, Joel R. Israel, Steve A. McClain
{"title":"A study of PGP 9.5 immunohistochemical labeling on formalin-fixed paraffin embedded tissues for epidermal nerve fiber density testing","authors":"Joseph A. Esposito, Camryn J. Vader, Joel R. Israel, Steve A. McClain","doi":"10.1080/01478885.2024.2405418","DOIUrl":"https://doi.org/10.1080/01478885.2024.2405418","url":null,"abstract":"There have been several methods established for immunohistochemical labeling of the PGP 9.5 antigen in human tissue for the assessment of epidermal nerve fiber density, none of which uses neutral-b...","PeriodicalId":15966,"journal":{"name":"Journal of Histotechnology","volume":"19 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142261097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Survey of NAACLS accredited histotechnology programs in the United States.","authors":"Carol Bain, Debra Wood, Sheila Criswell","doi":"10.1080/01478885.2024.2327095","DOIUrl":"10.1080/01478885.2024.2327095","url":null,"abstract":"<p><p>Histotechnology educational programs are accredited by the National Accrediting Agency for Clinical Laboratory Sciences (NAACLS) and currently number fewer than 50 in the United States which contributes to the shortages of laboratory personnel. A survey tool designed with REDCap software was distributed to all programs identified on the NAACLS website and consisted of three parts: a) program information, b) facility information, and c) challenges. Programs are located primarily in large urban centers where populations are most concentrated. The median class size was 6 which may explain the excellent student outcomes to include 96% graduation rates and 90.7% board of registry examination pass rates. Overall, programs had ample equipment, funding, and administrative support. Costs to attend the programs were relatively low (<$3,000 per semester) for over half of the programs. However, due to the small number of accredited education programs across the US, potential students do not often have access to an institution in their area. The programs indicated that the most common challenge was recruitment of adequate high-quality candidates which may explain, in part, the persistent shortage of personnel in the histology laboratory.</p>","PeriodicalId":15966,"journal":{"name":"Journal of Histotechnology","volume":" ","pages":"109-116"},"PeriodicalIF":0.6,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140143574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dibyajyoti Boruah, A W Kashif, Barun Kumar Chakrabarty, Sarika Harikrishnan, Arijit Sen
{"title":"Correlation of light and electron microscopic morphometric parameters of glomerular capillaries with serum creatinine and proteinuria.","authors":"Dibyajyoti Boruah, A W Kashif, Barun Kumar Chakrabarty, Sarika Harikrishnan, Arijit Sen","doi":"10.1080/01478885.2024.2326274","DOIUrl":"10.1080/01478885.2024.2326274","url":null,"abstract":"<p><p>Waste products in the bloodstream are filtered by the glomerular capillaries in the kidneys and excreted into the urine. When making a differential diagnosis of kidney diseases, structural assessment of glomeruli using histological, ultrastructural, and immunological studies is crucial. This study assessed the microscopic and ultrastructural morphometric parameters of glomerular capillaries and examined their correlation with serum creatinine and proteinuria. A total of 60 kidney biopsy cases received by the transmission electron microscope (TEM) laboratory for diagnosis were included in the study. Toluidine blue stained 300 nm thick sections of TEM tissue blocks were scanned for glomerular morphometry by a whole slide imaging system, and the estimation of Bowman's capsule (BC) area, glomerular capillary lumen diameter (GCLD), glomerular capillary density (GCD), glomerular capillary surface area density (GCSA), and percentage of glomerular capillary lumen space (%GCLS) was performed with QuPath software. TEM images of 70 nm thick sections were used for the evaluation of endothelial fenestration diameter (EFD), glomerular basement membrane (GBM) thickness, and podocyte foot process (PFP) effacement. Proteinuria and serum creatinine showed positive correlations with GBM thickness and PFP effacement. Negative correlations of serum creatinine were observed with EFD, %GCLS, and GCSA. Hence, glomerular filtration is greatly affected by the total area of the glomerular capillary surface and structural changes of GBM. Reduction of glomerulus filtration due to foot process effacement and thickening of GBM results in damage to the filtration barrier leading to the leakage of plasma protein into urine.</p>","PeriodicalId":15966,"journal":{"name":"Journal of Histotechnology","volume":" ","pages":"97-108"},"PeriodicalIF":0.6,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140094188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dimka Hinova-Palova, Boycho Landzhov, Lawrence Edelstein, Khodor Fakih, Alexandar Alexandrov, Teodora Kiriakova, Elka Radeva, Lyubomir Gaydarski, Frank Denaro, Adrian Paloff
{"title":"Identification of degenerated synaptic boutons in the dorsal claustrum of the cat after electrolytic lesions of the intralaminar thalamic nuclei.","authors":"Dimka Hinova-Palova, Boycho Landzhov, Lawrence Edelstein, Khodor Fakih, Alexandar Alexandrov, Teodora Kiriakova, Elka Radeva, Lyubomir Gaydarski, Frank Denaro, Adrian Paloff","doi":"10.1080/01478885.2024.2335827","DOIUrl":"10.1080/01478885.2024.2335827","url":null,"abstract":"<p><p>The aim of this study is to investigate whether the dorsal claustrum receives afferent input from the intralaminar thalamic nuclei - centromedian nucleus, central lateral nucleus and paracentral nucleus. The intralaminar thalamic nuclei of eight cats were electrolytically lesioned. We obtained samples from the dorsal claustrum for electron microscopic analysis from the second to the seventh post-procedural day. Two types of degenerated synaptic boutons were observed: electron-dense which formed the majority of boutons, and electron-lucent comprising the remaining samples. Between the second and seventh post-procedural day, we observed a steady increase in the number of electron-dense boutons which were diffusely distributed throughout the dorsal claustrum. Electron-dense degenerated boutons formed asymmetrical contacts with dendritic spines as well as with small and medium-sized dendrites. In contrast, electron-lucent degenerated boutons were observed in earlier post-procedural periods and formed symmetrical axodendritic contacts.</p>","PeriodicalId":15966,"journal":{"name":"Journal of Histotechnology","volume":" ","pages":"117-125"},"PeriodicalIF":0.6,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140335942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Elizabeth Chlipala, Tim Morken, Clare Thornton, Luis Chiriboga
{"title":"What will it take for histologists to be recognized under CLIA?","authors":"Elizabeth Chlipala, Tim Morken, Clare Thornton, Luis Chiriboga","doi":"10.1080/01478885.2024.2391636","DOIUrl":"10.1080/01478885.2024.2391636","url":null,"abstract":"","PeriodicalId":15966,"journal":{"name":"Journal of Histotechnology","volume":"47 3","pages":"93-96"},"PeriodicalIF":0.6,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142108085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zohreh Farrar, Alireza Afshar, Afshin Zare, Nadiar M Mussin, Asset A Kaliyev, Kulyash R Zhilisbayeva, Mahdi Mahdipour, Amin Tamadon
{"title":"Tissue clearing and three-dimensional imaging of intact tissues: a review on FACT protocol.","authors":"Zohreh Farrar, Alireza Afshar, Afshin Zare, Nadiar M Mussin, Asset A Kaliyev, Kulyash R Zhilisbayeva, Mahdi Mahdipour, Amin Tamadon","doi":"10.1080/01478885.2024.2352695","DOIUrl":"10.1080/01478885.2024.2352695","url":null,"abstract":"<p><p>FACT is a developed technique for clearing tissues that does not use acrylamide. Since the removal of lipids is crucial for transparency and efficient antibody staining throughout the tissue, especially for microscopy and imaging, it is a harmful process that can cause the loss of important biological molecules such as proteins. The FACT technique overcomes this by chemically bonding the membrane and intracellular proteins with the extracellular matrix, creating a massive 3D hydrogel matrix and providing structural support to fortify the tissue during processing. Compared to other acrylamide-based techniques, the FACT technique requires less labor and harmful chemicals and is therefore considered a more suitable option. In this study, we describe the complete FACT protocol for antibody staining and imaging of whole-cleared tissues while preserving structure and improving image quality. The protocol includes tissue perfusion, fixation, clearing, antibody staining, refractive index matching (RIM) (), microscopy, and imaging. The timing for each step varies depending on the size, weight, and type of tissue, as well as the type of immunostaining. We provide an example of the FACT protocol using mouse brain tissue, which demonstrates its suitability for molecular interrogation analysis of large tissues. The FACT technique has been successfully performed on different types of tissues, making it a favorable choice for a variety of applications.</p>","PeriodicalId":15966,"journal":{"name":"Journal of Histotechnology","volume":" ","pages":"126-142"},"PeriodicalIF":0.6,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140944901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Increase of KLK7, cytokeratin 5/6, and elafin expression in head and neck squamous cell carcinoma compared with lung squamous cell carcinoma.","authors":"Angelin Shanmugam, JoAnna Rudasill, Sheila Criswell","doi":"10.1080/01478885.2023.2301123","DOIUrl":"10.1080/01478885.2023.2301123","url":null,"abstract":"<p><p>Squamous cell carcinoma is the most common primary tumor in the head and neck epithelium and is the second most common primary tumor type in the lung. Although morphologically indistinguishable from each other with hematoxylin and eosin stain on histology, the tumors have different protein expression profiles. Using 24 formalin-fixed paraffin embedded squamous cell carcinomas of the lung and 24 squamous cell carcinomas in the head and neck, protein expression for cytokeratin 5/6, kallikrein 7, and elafin was evaluated by immunohistochemistry. All three proteins were found to evidence higher expression in head and neck squamous cell carcinoma as compared with that of squamous cell carcinoma of the lung. The differences in expression may help clinical differentiation between primary tumors of the lung from metastatic tumors to the lung from the oral/laryngeal cavities.</p>","PeriodicalId":15966,"journal":{"name":"Journal of Histotechnology","volume":" ","pages":"80-86"},"PeriodicalIF":1.1,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139377797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}