Search

Your search keyword '"Nermin, Ahmed"' showing total 9 results
Start Over Author "Nermin, Ahmed" Language english
9 results on '"Nermin, Ahmed"'

1. Metabolites profiling of Sapota fruit pulp via a multiplex approach of gas and ultra performance liquid chromatography/mass spectroscopy in relation to its lipase inhibition effect

Author

Mohamed A. Farag, Nermin Ahmed Ragab, and Maii Abdelnaby Ismail Maamoun

Subjects
Manilkara zapota L., SPME-GC/MS, UPLC/MS, GNPS molecular networking, Lipase inhibitor, Antioxidant, Medicine, Biology (General), QH301-705.5
Abstract

Background Sapota, Manilkara zapota L., are tasty, juicy, and nutrient-rich fruits, and likewise used for several medicinal uses. Methods The current study represents an integrated metabolites profiling of sapota fruits pulp via GC/MS and UPLC/MS, alongside assessment of antioxidant capacity, pancreatic lipase (PL), and α-glucosidase enzymes inhibitory effects. Results GC/MS analysis of silylated primary polar metabolites led to the identification of 68 compounds belonging to sugars (74%), sugar acids (18.27%), and sugar alcohols (7%) mediating the fruit sweetness. Headspace SPME-GC/MS analysis led to the detection of 17 volatile compounds belonging to nitrogenous compounds (72%), ethers (7.8%), terpenes (7.6%), and aldehydes (5.8%). Non-polar metabolites profiling by HR-UPLC/MS/MS-based Global Natural Products Social (GNPS) molecular networking led to the assignment of 31 peaks, with several novel sphingolipids and fatty acyl amides reported for the first time. Total phenolic content was estimated at 6.79 ± 0.12 mg gallic acid equivalent/gram extract (GAE/g extract), but no flavonoids were detected. The antioxidant capacities of fruit were at 1.62 ± 0.2, 1.49 ± 0.11, and 3.58 ± 0.14 mg Trolox equivalent/gram extract (TE/g extract) via DPPH, ABTS, and FRAP assays, respectively. In vitro enzyme inhibition assays revealed a considerable pancreatic lipase inhibition effect (IC50 = 2.2 ± 0.25 mg/mL), whereas no inhibitory effect towards α-glucosidase enzyme was detected. This study provides better insight into sapota fruit’s flavor, nutritional, and secondary metabolites composition mediating for its sensory and health attributes.

Published
2024
Full Text
View/download PDF

3. Sex and race define the effects of adverse childhood experiences on self-reported BMI and metabolic health biomarkers

Author

Jacqueline R. Leachman, Kory Heier, Feitong Lei, Nermin Ahmed, Carolina Dalmasso, Meredith S. Duncan, and Analia S. Loria

Subjects
ACE, BMI, Waist circumference, Race, Ethnicity, Sex, Medicine, Physiology, QP1-981
Abstract

Highlights This study shows the effects of ACEs in a cohort with a unique multiracial composition and enough power to evaluate these effects in underrepresented populations. Body adiposity is strongly associated with cumulative ACEs in women regardless of race. Only Black men displayed a negative correlation between cumulative ACEs and body adiposity. However, Black individuals showed an increased waist circumference with physical abuse suggesting an effect of ACEs on increased central adiposity and metabolic risk in this population. Specific adverse experiences seem to alter metabolic biomarkers with a unique signature depending on sex or race. Further investigation of these associations is critical to developing a more effective preventive and personalized medicine to reduce health disparities.

Published
2022
Full Text
View/download PDF

4. Metabolites profiling of Sapota fruit pulp via a multiplex approach of gas and ultra performance liquid chromatography/mass spectroscopy in relation to its lipase inhibition effect.

Author

Farag, Mohamed A., Ragab, Nermin Ahmed, and Maamoun, Maii Abdelnaby Ismail

Subjects
METABOLITES, FRUIT flavors & odors, GALLIC acid, OXIDANT status, AMIDES
Abstract

Background: Sapota, Manilkara zapota L., are tasty, juicy, and nutrient-rich fruits, and likewise used for several medicinal uses. Methods: The current study represents an integrated metabolites profiling of sapota fruits pulp via GC/MS and UPLC/MS, alongside assessment of antioxidant capacity, pancreatic lipase (PL), and α-glucosidase enzymes inhibitory effects. Results: GC/MS analysis of silylated primary polar metabolites led to the identification of 68 compounds belonging to sugars (74%), sugar acids (18.27%), and sugar alcohols (7%) mediating the fruit sweetness. Headspace SPME-GC/MS analysis led to the detection of 17 volatile compounds belonging to nitrogenous compounds (72%), ethers (7.8%), terpenes (7.6%), and aldehydes (5.8%). Non-polar metabolites profiling by HR-UPLC/MS/MS-based Global Natural Products Social (GNPS) molecular networking led to the assignment of 31 peaks, with several novel sphingolipids and fatty acyl amides reported for the first time. Total phenolic content was estimated at 6.79 ± 0.12 mg gallic acid equivalent/gram extract (GAE/g extract), but no flavonoids were detected. The antioxidant capacities of fruit were at 1.62 ± 0.2, 1.49 ± 0.11, and 3.58 ± 0.14 mg Trolox equivalent/gram extract (TE/g extract) via DPPH, ABTS, and FRAP assays, respectively. In vitro enzyme inhibition assays revealed a considerable pancreatic lipase inhibition effect (IC50 = 2.2 ± 0.25 mg/mL), whereas no inhibitory effect towards α-glucosidase enzyme was detected. This study provides better insight into sapota fruit's flavor, nutritional, and secondary metabolites composition mediating for its sensory and health attributes. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

5. EPIdemiology of Surgery-Associated Acute Kidney Injury (EPIS-AKI): study protocol for a multicentre, observational trial

Author

Weiss, Raphael, Saadat-Gilani, Khaschayar, Kerschke, Laura, Wempe, Carola, Meersch, Melanie, Zarbock, Alexander Hichem Makhloufi, Anis, Cherak, Lamine Lakhel Ghanem, Zohier, Gouaglia, Dina Nasrine Guadouri, Fayrouz Naouel Hama, Mustafa, Kara, Omayma, Saadi, Rachida, Sakhraoui, Fadila, Bourou, Abdelhadi, Cherifi, Rahmoune Ghania Sadaoui, Amel, Ouyahia, Ilhem, Ouahab, Souad, Bouaoud, Meriem, Abdoun, Anisse, Tidjane, Benali, Tabeti, Nabil, Boudjenan-Serradj, Carlos Jose Pérez Rivera, Paulo, Cabrer, Julián, Corso, Juan Pablo García, Sharon, Idarraga, Christopher, Montoya, Rafael, Figueroa, Eduar, Aldana, María Alejandra Torrado, Peng, Ke, Zheng-Min, Ma, Yu-Fan, Yang, Ya-Juan, Zhu, Peter, Sklienka, Michal, Frelich, Vojtech, Jarkulis, Pavel, Sevcik, Vojtech, Vodicka, Mohamed Gamal Elbahnasawy, Shady, Elsalhawy, Sara, Motawea, Zeinab, Othman, Mohamed, Sahma, Ahmed Mahmoud Nafea, Nermin, Ahmed, Doaa Ali Attia, Moataz Maher Emara, Mohamed Mamdouh Bonna, Mohamed Ahmed Gabr, Amany Ismail Tarbay, Ibrahim Abdelmonaem Abdehaleem, Esraa Elsayed Mohamed, Amr Mahmoud Eldeeb, Ahmed Mohamed Abbas, John Ashraf Magdy, Zyad Hassan Hamed, Hany Mostafa Esmaeil Osman, Mostafa Samy Abbas, Oliver, Joannes-Boyau, Nicolas, Barraud, Corentin, Berthelot, Thibault, Camus, Anissa, Dahmi, Mylène, Defaye, Sébastien, Derville, Younes, El-Boustani, Elsa, Deloge, Hélène, Jacob, Simon, Monziols, Fred, Priem, Jean-Jacques, Robin, Vincent, Legros, Therry, Floch, Salvatore, Muccio, Claire, Geneve, Marie Lim Legouge, Stéphanie Tao Mauny, Willy, Mfam, Léa, Pascot, Christophe, Aveline, Mireille, Chartier, Benjamin, Duteurtre, Jean Francois Gautier, Aidren Le Cousin, Pierre, Vautier, Julien, Nadaud, Nathalie, Begel, Claire-Annissa, Chekirine, Vincent, Derlon, Elodie, Grein, Marie-Annick, Lehair, Laurent, Magazzeni, Philippe, Magazzeni, Carsten, Potter, Catherine, Roth, Florence, Voivret, Thomas, Rimmelé, Valérie, Cerro, Stéphanie, Suria, Jamil, Elmawieh, Annabelle, Stoclin, Cédric, Cirenei, Gregoire, Andrieu, Sven, Couloumy, Jeremy, Falcone, Marion, Fajardy, Arsène, Gagneuil, Emeline, Girardet, Agnès, Mazereeuw, Sébastien, Ponsonnard, Pierre-Yves, Egreteau, Mélanie, Bertel, Simon, Bocher, Vanessa, Carn, Lenaïg Le Guen, Guillaume Le Loup, Montaine, Lefevre, Carole, Ichai, Amanita, Diop, Vanessa, Jean-Michel, Sylvie, Devlieger, Juliette, Duthoit, Mohamed El Kadiri, Maxime, Léger, Viviane, Cassisa, Sigismond, Lasocki, Charline, Masson, Emmanuel, Rineau, Pierre, Verrier, Axel, Coquerel, Philippe, Montravers, Enora, Atchade, Charles-Edouard, Rochon, Céline, Delerue, Vidal, Quentin, Vanessa, Latry, Nina, Queixalos, Vincent, Cottenceau, Thierry, Braun, Saad, Bouzoubaa, Basile, Christ, Audrey, Geiger, Joachim, Gomille, Vianney, Kieffer, Simone, Mangeant, Christelle, Prochilo, Christian, Schmitt, Stefan, Skwirba, Hubert, Grand, Frédérique, Boury, Nicolas, Mayeur, Marie, Pasquie, Pierre, Garçon, Vincent, Bruckert, Vincent, Arnould, Mona, Bonciu, Thibault, Chapelle, Luc, Facchino, Florence, Fagot-Gandet, Andrea, Iachim, Elena, Mannu, Olivier, Perus, Rémi, Plattier, Romain, Rozier, Gaël, Pradel, Michel, Boudinaud, Marie-Hélène, Hausermann, My Hue Nguyen, Andersen, Ramorasata, Amélie, Barreau, Anne-Hélène, Boivin, Céline, Ravry, Nicolas, Mottard, Johanne, Beuvelot, Florence Prunier Bossion, Olivier, Desebbe, Alexander, Zarbock, Christian, Dörr, Thilo Caspar von Groote, Mira, Küllmar, Christina, Massoth, Melanie, Meersch, Khaschayar, Saadat-Gilani, Raphael, Weiss, Carola, Wempe, Sebastian, Ziemann, Linda, Grüßer, Ana, Kowark, Pia, Wittig, Timo, Brandenburger, Thomas, Dimski, Niklas, Döhmen, Laura, Huthmann, Daniela, Kaierle, Claude, Pelletier, Manon, Schleß, Andreas, Hohn, Sebastian, Cleophas, Stephanie, Haunhorst, Marina, Jansen, Alexandra, Schmitt, Julia, Soisch, Kilian, Sturm, Peter, Rosenberger, Alexander, Bendig, Lena, Flohr, Helene, Häberle, Pascal, Hofmann, Jonathan, Kuhle, Nora Michaela Leser, Kathrin, Pfister, Stefanie, Prohaska, Franziska, Sennholz, Lena, Stetz, Kathrin, Weber, Sebastian, Stehr, Stephan, Klaus, Marco, Sadlo, Matthias, Boschin, Christian, Sengelhoff, Ulrich Michael Göbel, Jan Gerrit Haaker, Carina-Kristin, Göttker, Matthias, Gründel, Matthias, Heringlake, Romina, Baumgärtel, Astrid, Berggren, Madeleine, Gülzow, Lennart, Muras, Hauke, Paarmann, Serge, Thal, Alexander, Bentley, Dschamil, El-Masri, Anne, Sebastiani, Eleni, Arnaoutoglou, Maria, Ntalouka, Paula, Stratigopoulou, Anastasia, Analytis, Efthymios, Mavrommatis, Petros, Tzimas, Agathi, Karakosta, Danai, Pantazi, Antonia, Dimakopoulou, Katerina, Dimitropoulou, Orestis, Ioannidis, Humam, Jalaawiy, Aeshah, Anwar, Hashim Talib Hashim, Hogir Imad Rasheed Aldawoody, Andrea, Cortegiani, Giulia, Catalisano, Gilia, Ingoglia, Mariachiara, Ippolito, De Rosa, Silvia, Lucia, Cattin, Andrea, Bianchin, Marisa, Barone, Gianluca, Paternoster, Salvatore Lucio Cutuli, Andrea, Russo, Liliana, Sollazzi, Laura, Cascarano, Massimo, Antonelli, Paola, Aceto, Bruno, Romanò, Savino, Spadaro, Vincenzo Francesco Tripodi, Michele, Rossi, Rosamaria, Scappatura, Maria Cristina Vadalà, Diego, Fiume, Maria Teresa Strano, Giulia, Oddo, Clemente, Santorsola, Bilal Abu Hussain, Adnan Raed Alnaser, Anas Hassouneh Ghassan, Khaled, Hasanein, Mohammed, Theab, Seokyung, Shin, Seungho, Jung, Kyuho, Lee, Sung Mee Jung, Jongyoon, Baek, Muhammed, K Elhadi, Issa, Abuzeid, Mohammed, Albaraesi, Sarah, Aldressi, Wegdan, Khalel, Eman, Abdulwahed, Akram Abdulhamid Ashur Abujrad, Amer, Almaghrabi, Muhand Mohammed Alteleeb, Entisar Ahmed Ali Alshareea, Marwa Isa Biala, Abdulqudus, Deeknah, Dooua Ali Gheddim, Reem, Ghmagh, Nawras Salih Ali AbuIkhrays, Marwa, Sinan, Enas, Soula, Sumayyah Ghayth Bahroun, Khawla, Derwish, Aya Munir Mohamed, Eman Sayed Younes, Rayet Al Islam Benjouira, Mohamed, Aliwa, Najwa Abdullah Altashani, Mohammed Omar Alteb, Ahmed, Msherghi, Fatima, Alagelli, Sufyan, Albarouni, Ahmed, Albishti, Sarah, Aljamal, Mohamed, Alsori, Taha, Ekhuja, Suha, Elzwai, Mohammed, Ghula, Tahani, Mustafa, Ahmed, Tuwaib, Haifa, Zriba, Hamza Mahmoud Agilla, Toky Andriamahefa Rafanomezantsoa, Anne Marie Camilleri Podesta, Denise Mifsud Bonnici, Tiziana, Pirotta, Gilberto Adrián Gasca López, Maja Mojsova Mijovska, Tatjana, Davitkovska, Aleksandra, Gavrilovska, Sanja, Lukikj, Marija, Vesova, Dina, Zafirova, Sarah, Amro, Baraa N, F Hajjaj, Muawia, Alkhazendar, Yousuf, Barakat, Sewar Abdulaziz Elejla, Ahmed, Elhissi, Ahmed, Khader, Ali, Salem, Rita de Freitas Regufe, André Filipe de Oliveira Eloy, Lisbete Marisa Neto Cordeiro Perdigão, Evgeny, Grigoriev, Artem, Ivkin, Roman, Kornelyuk, Michael, Yaroustovsky, Marina, Abramyan, Ekaterina, Komardina, Nataliya, Lesteva, Medina, Aybazova, Elmira, Kumykova, Svetlana, Lesina, Gennady, Rybakov, Alexey, Shestov, Abdulnaser Ahmad Ahmad Barmou, Bushra Lotfi Altayeb Ahmed, Aisha Mohammad Eliyas, Yousra, Emadeldin, Alexander, Kaserer, Clara, Castellucci, Julian, Rössler, Samira, Akbas, Andreja Möller Petrun, Irena, Gregorcic, Vesna, Sok, Roman, Čičak, Elizabeth, Bárcena, Antonio, Guisado, Ismail, Wi, Javier Ripollés Melchor, Ángel, Becerra-Bolaños, Sergio, Cabrera-Doreste, Ancor, Domínguez-Arbelo, María Candelaria Delgado-Alonso, Virginia, Muiño-Palomar, Aurelio, Rodríguez-Pérez, Javier Mata Estévez, Maria Begona Covas Munoz, Juan Mulet Matas, Sara Perez Palao, Maria Dolores Mira Quirós, Alisia Cezara Teslev, Mercedes Garcia Alvarez, Marga, Argilaga, María, Campos, Albert, Bainac, Astrid, Batalla, Marta, Giné, Gracia, Herránz, Ignacio, Hinojal, Margarita Logroño Ejea, Noelia de la Rosa Ruiz, María Gastaca Abasolo, Carla Rosario Houhton Acuna, Ibai Iriarte Zaranton, Ana, Mendigurenmurua, María José Munoz Sanz, Erika Olea de la Fuente, María Pilar Pérez Vaquero, Ana Soto Iglesias, Ana Ugarte Mieres, Alaitz Urtiaga Urrestizala, Lourdes, Ferreira, Félix, Lobato, Marta Aguado Sevilla, Andres, Erazo, Pere, Miró, Sergi, Sabaté, Diana, Vernetta, Berta Castellano Paulis, Anabel Adell Perez, Marta Aseguinolaza Pagola, Elena delVal Peciña, Ainhoa Garmendia Odriozola, Amaia Lopetegi Aizpurua, Olatz Pavón Piquer, Pilar Plou Garcia, Paula Ortega Rezola, Antia Osorio Lopez, Isabel de la Calle Gil, Rosalía Navarro Casado, Peter, Adamove, Roser Bayona Domenge, Francho Miguel Blasco Blasco, Adriana Alexandra Rueda Villamizar, Maria Antonia Perelló Llaneras, Jose Ignacio García-Sánchez, Laura Fernandez Téllez, Sara García Zamorano, Natalia Gijón Herreros, Andrea Rodriguez Esteve, Pablo Monedero Rodríguez, Isabel García Trigo, Agustín, Alcaraz, Andrea Lara Jiménez, Iñigo, Rubio, Nuria, García, Raquel, Callejas, Angel Manuel Candela Toha, Eli, Claros, Pilar, Cobeta, Pascual, Crespo, Trini, Dorado, Elena, Elías, Javier, Felices, Diego, Gil, María, Gómez, Nuria, Mané, María, Martín, Adolfo, Martínez, Lucía, Pereira, Alberto Balvis Noemí Samaranch, Ana, Serrano, Carlos, Tiscar, Judith, Villahoz, Patricia Galán Menéndez, Elena, Cardona, Anna, Conesa, Veronica, Estepa, Patricia, Galán, Laura Llinares Espí, Yuri Loaiza Aldeán, Susana, Manrique, Víctor Morales Ariza, Laura Villarino Villa, Elfayadh Saidahmed Mohamed Amed Suliman, Hytham, Hamid, Ahmed Mohamed Ibrahim, Modather Mohamed Saeed, Orhan Sungur Mukadder, Demet, Altun, Nur, Canbolat, Müşerref Beril Dinçer, Tulay Özkan Seyhan, Serap Aktaş Yıldırım, Müzeyyen, İyigün, Davut, Yapıcı, Levent, Özdemir, Aslinur, Sagun, Neval, Boztug, Yesim, Cetintas, Bora, Dinc, Emel, Gündüz, Hakkı, Ünlügenç, Demet Lafli Tunay, Deniz, Karakaya, Burhan, Dost, Ozgur, Komurcu, Özlem Korkmaz Dilmen, Eren Fatma Akcil, Yusuf, Tunali, Gülay, Ok, Eda Tok Alsina, Özge, Hakli, Cengiz, Polat, Namigar, Turgut, Nurcan, Kızılcık, Özge, Köner, Öznur, Şen, Nurdan, Aydin, Burcu, Basaran, Emre Sertac Bingul, Yavuz, Gürkan, Kamil, Darcin, Semra, Ugur, Kemal Tolga Saracoglu, Asli, Demir, Özgök, Aysegül, Eda, Balci, Behic, Girgin, Aygun, Guler, Ümit, Karadeniz, Nihal, Özaslan, Yigit Özay Hülya, Namik, Ozcan, Aysun, Postaci, Mehmet, Sahap, Nevriye, Salman, Özlem, Sağır, Bulent, Atik, Murat, Bicakcioglu, Hafize Fisun Demir, Ugün, Fatih, Nazan, Kocaoglu, Hüseyin Ilksen Toprak, Duygu Demiröz Aslan, Yusuf Ziya Colak, Mustafa Soner Ozcan, Mehmet, Yilmaz, Umran, Karaca, Sevtap Hekimoglu Sahin, Özlem Ersoy Karka, Gizem Demir Şenoğlu, Süheyla Erkoç Karadağ, Neslihan, Alkis, Volkan, Baytaş, Engin, Erturk, Ali, Akdogan, Ahmet, Besir, Dilek, Kutanis, Sedat, Saylan, Ersagun, Tugcugil, Pinar, Ayvat, Berrin, Günaydın, Beyza Mehri Büyükgebiz, Omer Faruk Boran, Feyza, Calisir, Yavuz, Orak, Bahar Kuvaki Balkan, Sibel, Büyükcoban, Erol, Gökel, Sakize Ferim Günenc, Sule, Özbilgin, Suna, Göre, Selcan, Akesen, Seda, Cansabuncu, Natalia, Momot, Anna, Panchenko, Jean-Francois, Pittet, Kristen, Rutledge, Tıp Fakültesi, Weiss, R, Saadat-Gilani, K, Kerschke,L, Wempe,C, Meersch, M, Zarbock, A, Cortegiani, A, and Ippolito, M

Subjects
Epidemiology, urologic and male genital diseases, acute renal failure, Adult Intensive & Critical Care, Anaesthesia, Cohort Studies, surgery, chronic renal failure, Humans, Multicenter Studies as Topic, Prospective Studies, adult intensive & critical care, urogenital system, Incidence, General Medicine, Acute Kidney Injury, female genital diseases and pregnancy complications, critical care, Renal Replacement Therapy, Observational Studies as Topic, epidemiology, Acute Renal Failure, Surgery, adult intensive &amp, Chronic Renal Failure
Abstract

Sağır, Özlem (Balikesir Author), Introduction More than 300 million surgical procedures are performed each year. Acute kidney injury (AKI) is a common complication after major surgery and is associated with adverse short-term and long-term outcomes. However, there is a large variation in the incidence of reported AKI rates. The establishment of an accurate epidemiology of surgery-associated AKI is important for healthcare policy, quality initiatives, clinical trials, as well as for improving guidelines. The objective of the Epidemiology of Surgery-associated Acute Kidney Injury (EPIS-AKI) trial is to prospectively evaluate the epidemiology of AKI after major surgery using the latest Kidney Disease: Improving Global Outcomes (KDIGO) consensus definition of AKI. Methods and analysis EPIS-AKI is an international prospective, observational, multicentre cohort study including 10 000 patients undergoing major surgery who are subsequently admitted to the ICU or a similar high dependency unit. The primary endpoint is the incidence of AKI within 72 hours after surgery according to the KDIGO criteria. Secondary endpoints include use of renal replacement therapy (RRT), mortality during ICU and hospital stay, length of ICU and hospital stay and major adverse kidney events (combined endpoint consisting of persistent renal dysfunction, RRT and mortality) at day 90. Further, we will evaluate preoperative and intraoperative risk factors affecting the incidence of postoperative AKI. In an add-on analysis, we will assess urinary biomarkers for early detection of AKI. Ethics and dissemination EPIS-AKI has been approved by the leading Ethics Committee of the Medical Council North Rhine-Westphalia, of the Westphalian Wilhelms-University Münster and the corresponding Ethics Committee at each participating site. Results will be disseminated widely and published in peer-reviewed journals, presented at conferences and used to design further AKI-related trials. Trial registration number NCT04165369. ©

Published
2021

7. The Spectacle of Murder: Fact, Fiction and Folk Tales

Author

Nermin Ahmed Haikal, Morag Kennedy, Nermin Ahmed Haikal, and Morag Kennedy

Subjects
Murder--Investigation
Abstract

This volume was first published by Inter-Disciplinary Press in 2016. Nothing is more permanent than murder. Century long myths have persistently continued adapting to cultural and social changes. As early as the seventeenth century novels have been created surrounding the phenomenon of murder due to those in the Victorian era relishing in the gory details of those unfortunate souls. Murder makes a good story - it sells newspapers, books and video games. Society immerses itself in the mysterious compulsions of the unhinged mind. Like birds we flock to murder sites desperately trying to grasp at the victims last wish or for a chance to step into the killer's shoes. However murder no longer hides in plain sight - its sadistic menace has corrupted our hard drives. Teenagers and adults alike enjoy playing Grand Theft Auto and Call of Duty - killing avatars at will. The line between reality and virtual reality blurs.

Published
2016

8. Endogenous angiotensinergic system in neurons of rat and human trigeminal ganglia

Author

Takaaki Senbonmatsu, Juerg Nussberger, Maren Wellner, Hans Imboden, Juan M. Saavedra, Tadashi Inagami, Thomas Schaffner, Nermin Ahmed, Jaspal Patil, Benno Hess, Françoise Nicoud, Dominik N. Müller, and Jaroslav Pavel

Subjects
Adult, Male, medicine.medical_specialty, Physiology, Clinical Biochemistry, Angiotensinogen, Radioimmunoassay, Substance P, In situ hybridization, Rats, Inbred WKY, Biochemistry, Article, Cellular and Molecular Neuroscience, chemistry.chemical_compound, Trigeminal ganglion, Endocrinology, Internal medicine, Renin–angiotensin system, medicine, Animals, Humans, RNA, Messenger, In Situ Hybridization, Neurons, biology, Angiotensin II, Colocalization, Angiotensin-converting enzyme, Immunohistochemistry, Rats, medicine.anatomical_structure, Trigeminal Ganglion, chemistry, biology.protein, cardiovascular system, Neuron, Angiotensin I, hormones, hormone substitutes, and hormone antagonists, Angiotensin I/analysis, Angiotensin II/analysis, Angiotensinogen/analysis, Angiotensinogen/genetics, Neurons/metabolism, RNA, Messenger/metabolism, Trigeminal Ganglion/metabolism
Abstract

To clarify the role of Angiotensin II (Ang II) in the sensory system and especially in the trigeminal ganglia, we studied the expression of angiotensinogen (Ang-N)-, renin-, angiotensin converting enzyme (ACE)- and cathepsin D-mRNA, and the presence of Ang II and substance P in the rat and human trigeminal ganglia. The rat trigeminal ganglia expressed substantial amounts of Ang-N- and ACE mRNA as determined by quantitative real time PCR. Renin mRNA was untraceable in rat samples. Cathepsin D was detected in the rat trigeminal ganglia indicating the possibility of existence of pathways alternative to renin for Ang I formation. In situ hybridization in rat trigeminal ganglia revealed expression of Ang-N mRNA in the cytoplasm of numerous neurons. By using immunocytochemistry, a number of neurons and their processes in both the rat and human trigeminal ganglia were stained for Ang II. Post in situ hybridization immunocytochemistry reveals that in the rat trigeminal ganglia some, but not all Ang-N mRNA-positive neurons marked for Ang II. In some neurons Substance P was found colocalized with Ang II. Angiotensins from rat trigeminal ganglia were quantitated by radioimmunoassay with and without prior separation by high performance liquid chromatography. Immunoreactive angiotensin II (ir-Ang II) was consistently present and the sum of true Ang II (1-8) octapeptide and its specifically measured metabolites were found to account for it. Radioimmunological and immunocytochemical evidence of ir-Ang II in neuronal tissue is compatible with Ang II as a neurotransmitter. In conclusion, these results suggest that Ang II could be produced locally in the neurons of rat trigeminal ganglia. The localization and colocalization of neuronal Ang II with Substance P in the trigeminal ganglia neurons may be the basis for a participation and function of Ang II in the regulation of nociception and migraine pathology.

Published
2009

Catalog

Books, media, physical & digital resources
See catalog results