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Fatema K, Auditi TI, Biswas S, Ayesha SB, Helal Uddin M, Sumon KA, Goswami C, Bhandari RK, Rashid H. Investigations of hemato-biochemical and histopathological parameters, and growth performance of walking catfish (Clarias batrachus) exposed to PET and LDPE microplastics. Environ Toxicol Pharmacol 2023; 102:104250. [PMID: 37595935 DOI: 10.1016/j.etap.2023.104250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 08/01/2023] [Accepted: 08/15/2023] [Indexed: 08/20/2023]
Abstract
Fish inhabiting various trophic levels are affected differently as the presence of microplastic (MP) in the water column and their ingestion by fish varies. Walking catfish (Clarias batrachus) inhabits the bottom of the water bodies. To understand the effects of MP, we exposed C. batrachus to two types of MP - polyethylene terephthalate (PET) and low-density polyethylene (LDPE) for 60 days. After exposure, hematological indices, mainly red blood cells and hemoglobin levels decreased, and white blood cells increased significantly compared to the control group (p < 0.05). A significant increase in the levels of blood urea and glucose was observed, and serum glutamic pyruvate transaminase and serum glutamyl oxaloacetic transaminase activity remained elevated (p < 0.05). Histopathological examination of the liver, kidney, intestine, and gills showed morphological alterations. Moreover, MP exposure caused growth retardation (p < 0.05) in C. batrachus. Widespread pollution of water bodies by MP may impose serious ecological risks to bottom-feeding fish in Bangladesh.
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Affiliation(s)
- Kaniz Fatema
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh; Department of Fisheries Management, Hajee Mohammad Danesh Science and Technology University, Dinajpur 5200, Bangladesh
| | - Tasnia Islam Auditi
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Shema Biswas
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Sumaiya Binte Ayesha
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Md Helal Uddin
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Kizar Ahmed Sumon
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Chayon Goswami
- Department of Biochemistry and Molecular Biology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Ramji Kumar Bhandari
- Department of Biology, University of North Carolina at Greensboro, Greensboro, NC 27412, USA
| | - Harunur Rashid
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh.
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Handique BK, Goswami C, Das PT, Goswami J, Jena P, Dutta F, Jha DK, Aggarwal SP. Space technology support for development of agriculture in the North Eastern Region of India – scope and challenges. CURR SCI INDIA 2022. [DOI: 10.18520/cs/v123/i8/975-986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Badruzzaman M, Goswami C, Sayed MA. Photoperiodic light pulse induces ovarian development in the catfish, Mystus cavasius: Possible roles of dopamine and melatonin in the brain. Ecotoxicol Environ Saf 2021; 227:112941. [PMID: 34710816 DOI: 10.1016/j.ecoenv.2021.112941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 10/02/2021] [Accepted: 10/20/2021] [Indexed: 06/13/2023]
Abstract
In the freshwater catfish, Mystus cavasius, locally known as gulsha, ovarian maturation is triggered by long-day conditions. Using dopaminergic neuronal activity in the brain, the purpose of this study was to identify the brain's detection of a nocturnal light pulse that induced ovarian development. Since direct inhibition of pituitary gonadotropin release is exerted by dopamine (DA), it may serve as a neuromodulator of photoperiodic stimulation in teleosts. We studied functional effects of photoperiodicity on dopaminergic rhythmicity in gulsha brain. Nocturnal illumination and Nanda-Hamner photocycles revealed that ovarian development is induced by a 1 h light pulse between zeitgeber time (ZT) 12 and 13. Daily fluctuations in DA, 3, 4-dihydroxyphenylacetic acid (DOPAC) and DOPAC/DA were observed under a 12L:12D photoperiod. Fish exhibited increased levels during the daytime and decreased levels at night. Rhythmic patterns of dopaminergic activity also showed clear circadian oscillations under constant light, but not constant dark conditions. After 7 days of exposure to long photoperiod (14L:10D), DA, DOPAC and DOPAC/DA in the brain at ZT12 and ZT16 were significantly higher than during a short photoperiod (10L:14D). Melatonin-containing water inhibited the release of DA and DOPAC 6 h and 24 h after treatment, respectively, and DOPAC/DA 6 h after treatment. This inhibition was blocked by the melatonin receptor antagonist, luzindole. These results suggest that a 1 h nocturnal light pulse induces ovarian development through alteration of dopaminergic neuronal excitability in the brain, via oscillation in melatonin triggered by photic stimuli, which may interfere with the reproductive endocrine axis in gulsha.
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Affiliation(s)
- Muhammad Badruzzaman
- Department of Biochemistry and Molecular Biology, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh.
| | - Chayon Goswami
- Department of Biochemistry and Molecular Biology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Md Abu Sayed
- Department of Biochemistry and Molecular Biology, Hajee Mohammad Danesh Science and Technology University, Dinajpur 5200, Bangladesh
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Basade M, Singhal M, Rathi AK, Nandi M, Minhas S, Goswami C, Shinde S, Parikh PM, Aggarwal S. Practical consensus recommendations regarding the management of HER2 neu positive metastatic breast cancer. South Asian J Cancer 2020; 7:146-150. [PMID: 29721483 PMCID: PMC5909294 DOI: 10.4103/sajc.sajc_123_18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Metastatic breast cancer (MBC) is cancer that has spread from the breast to another part of the body or has come back in another distant location. Treatment options for MBC depend on several factors, including where the cancer has spread, the patient's overall health, and the levels of hormone receptors and HER2 in the tumour. Over-expression of HER2 is generally considered to be a negative prognostic feature because it accompanies an increase in breast cancer mortality. However, the development of agents that specifically target HER2 has improved the management of patients with these tumours.[7],[8],[9],[10] This expert group used data from published literature, practical experience and opinion of a large group of academic oncologists to arrive at these practical consensus recommendations in regards with the use of these agents and the management of HER2 positive MBC for the benefit of community oncologists.
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Affiliation(s)
- M Basade
- Department of Medical Oncology, Saifee Hospital, Mumbai, Maharashtra, India
| | - M Singhal
- Department of Medical Oncology, Indraprastha Apollo Hospital, New Delhi, India
| | - A K Rathi
- Department of Radiation Oncology, MAMC, New Delhi, India
| | - M Nandi
- Department of Medical Oncology, Jaypee Hospital, Noida, Uttar Pradesh, India
| | - S Minhas
- Department of Medical Oncology, Sir Ganga Ram Hospital, New Delhi, India
| | - C Goswami
- Department of Medical Oncology, Jaypee Hospital, Noida, Uttar Pradesh, India
| | - S Shinde
- Department of Radiation Oncology, Medica Superspecialty Hospital, Kolkata, West Bengal, India
| | - P M Parikh
- Department of Oncology, Shalby Cancer and Research Institute, Mumbai, Maharashtra, India
| | - S Aggarwal
- Department of Radiation Oncology, Medica Superspecialty Hospital, Kolkata, West Bengal, India
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Rajappa S, Bajpai J, Basade M, Ganvir M, Goswami C, Murali A, Rathi AK, Kaushal V, Jain S, Parikh PM, Aggarwal S. Practical consensus recommendations regarding the use of hormonal therapy in metastatic breast cancer. South Asian J Cancer 2020; 7:137-141. [PMID: 29721481 PMCID: PMC5909292 DOI: 10.4103/sajc.sajc_121_18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Metastatic breast cancer (MBC) is cancer that has spread from the breast to another part of the body or has come back in another distant location. Treatment options for MBC depend on several factors. One of these factors is the levels of hormone receptors (HRs) in the tumor. Cancers with high levels of HRs, called HR-positive, use the hormones estrogen and progesterone to grow and spread. Hormonal therapy is a type of treatment specifically for HR-positive breast cancer. This expert group used data from published literature, practical experience and opinion of a large group of academic oncologists to arrive at these practical consensus recommendations in regards with the use of hormonal therapy and the management of HR-positive MBC for the benefit of community oncologists.
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Affiliation(s)
- Senthil Rajappa
- Department of Medical Oncology, IACH, Hyderabad, Telangana, India
| | - J Bajpai
- Department of Medical Oncology, Tata Memorial Hospital, Mumbai, Maharashtra, India
| | - M Basade
- Department of Medical Oncology, Saifee Hospital, Mumbai, Maharashtra, India
| | - M Ganvir
- Department of Medical Oncology, Sir Ganga Ram Hospital, New Delhi, India
| | - C Goswami
- Department of Radiation Oncology, Apollo Gleneagles Hospital, Kolkata, West Bengal, India
| | - A Murali
- Department of Medical Oncology, Sarvodaya Hospital, Faridabad, India
| | - A K Rathi
- Department of Medical Oncology, Sarvodaya Hospital, Faridabad, India
| | - V Kaushal
- Department of Radiation Oncology, MAMC, New Delhi, India
| | - S Jain
- Department of Radiation Oncology, RCC, Rohtak, Haryana, India
| | - Purvish M Parikh
- Department of Surgical Oncology, Ludhiana Medicity Hospital, Ludhinana, Punjab, India
| | - S Aggarwal
- Department of Medical Oncology, Sir Ganga Ram Hospital, New Delhi, India
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Anand AK, Agarwal JP, D'Cruz A, Dattatreya PS, Goswami C, Joshi A, Julka PK, Noronha V, Prabhash K, Rao RR, Kumar R, Toprani R, Saxena V. Evolving multidisciplinary treatment of squamous cell carcinoma of the head and neck in India ✰. Cancer Treat Res Commun 2020; 26:100269. [PMID: 33338859 DOI: 10.1016/j.ctarc.2020.100269] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 11/17/2020] [Accepted: 12/07/2020] [Indexed: 06/12/2023]
Abstract
In this article, we highlight the evolution of a multimodal approach in the overall management of squamous cell carcinoma of the head and neck (SCCHN) in India; present advances in technology (newer surgical techniques), novel medical and radiotherapy (RT) approaches; review their roles for an integrated approach for treating SCCHN and discuss the current role of immunotherapy in SCCHN. For locally advanced (LA) SCCHN, the multidisciplinary approach includes surgery followed by RT, with or without chemotherapy (CT) or concurrent chemoradiotherapy. Improved surgical techniques of reconstruction and voice-preservation are being implemented. Advanced forms of high-precision conformal techniques like intensity-modulated radiotherapy are used to deliver highly conformal doses to tumors, sparing the surrounding normal tissue. Compared with RT alone, novel CT regimens and targeted therapeutic agents have the potential to improve locoregional control and survival and reduce treatment-induced toxicities. Several clinical trials have demonstrated efficacy, safety, and quality of life benefits of adding cetuximab to RT regimens in LASCCHN. Studies have also suggested a cetuximab-related laryngeal preservation benefit. At progression, platinum-based CT combined with cetuximab (a monoclonal anti-epidermal growth factor receptor antibody) is the only validated option available as the first-line therapy. Thus, an integrated multidisciplinary approach plays a key role in maximizing patient outcomes, reduction in treatment related morbidities that consequently impact quality of life of survivors.
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Affiliation(s)
- A K Anand
- Max Super Speciality Hospital, Delhi, India.
| | | | - A D'Cruz
- Tata Memorial Hospital, Mumbai, India
| | | | - C Goswami
- Superspeciality Hospital, Kolkata, India
| | - A Joshi
- Memorial Hospital, Mumbai, India
| | - P K Julka
- Max Super Speciality Hospital, Delhi, India.
| | - V Noronha
- Tata Memorial Hospital, Mumbai, India
| | | | | | | | - R Toprani
- Healthcare Global Enterprises Cancer Centre, Ahmedabad, India
| | - V Saxena
- Medical Affairs, Merck Specialities Pvt Ltd, India.
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Goswami C, Dezaki K, Wang L, Inui A, Seino Y, Yada T. Ninjin'yoeito Targets Distinct Ca 2+ Channels to Activate Ghrelin-Responsive vs. Unresponsive NPY Neurons in the Arcuate Nucleus. Front Nutr 2020; 7:104. [PMID: 32766273 PMCID: PMC7379896 DOI: 10.3389/fnut.2020.00104] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 06/08/2020] [Indexed: 12/22/2022] Open
Abstract
Appetite loss or anorexia substantially deteriorates quality of life in various diseases, and stand upstream of frailty. Neuropeptide Y (NPY) in the hypothalamic arcuate nucleus (ARC) and ghrelin released from stomach are potent inducers of appetite. We previously reported that Ninjin'yoeito, a Japanese kampo medicine comprising twelve herbs, restores food intake, and body weight in cisplatin-treated anorectic mice. Furthermore, Ninjin'yoeito increased cytosolic Ca2+ concentration ([Ca2+]i) in not only ghrelin-responsive but ghrelin-unresponsive NPY neurons in ARC. The cellular lineage/differentiation of ghrelin-unresponsive neuron is less defined but might alter along with aging and diet. This study examined the occupancy of ghrelin-unresponsive neurons among ARC NPY neurons in adult mice fed normal chow, and explored the mechanisms underlying Ninjin'yoeito-induced [Ca2+]i increases in ghrelin-unresponsive vs. ghrelin-responsive NPY neurons. Single ARC neurons were subjected to [Ca2+]i measurement and subsequent immunostaining for NPY. Ghrelin failed to increase [Ca2+]i in 42% of ARC NPY neurons. Ninjin'yoeito (10 μg/ml)-induced increases in [Ca2+]i were abolished in Ca2+ free condition in ghrelin-responsive and ghrelin-unresponsive ARC NPY neurons. Ninjin'yoeito-induced [Ca2+]i increases were inhibited by N-type Ca2+ channel blocker ω-conotoxin in the majority (17 of 20), while by L-type Ca2+ channel blocker nitrendipine in the minority (2 of 23), of ghrelin-responsive neurons. In contrast, Ninjin'yoeito-induced [Ca2+]i increases were inhibited by nitrendipine in the majority (14 of 17), while by ω-conotoxin in the minority (8 of 24), of ghrelin-unresponsive neurons. These results indicate that ghrelin-unresponsive neurons occur substantially among NPY neurons of ARC in adult mice fed normal chow. Ninjin'yoeito preferentially target N-type and L-type Ca2+ channels in the majority of ghrelin-responsive and ghrelin-unresponsive neurons, respectively, to increase [Ca2+]i. We suggest ARC N- and L-type Ca2+ channels as potential targets for activating, respectively, ghrelin-responsive, and unresponsive NPY neurons to treat anorexia.
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Affiliation(s)
- Chayon Goswami
- Division of Integrative Physiology, Center for Integrative Physiology, Kansai Electric Power Medical Research Institute, Kobe, Japan.,Division of Diabetes, Metabolism and Endocrinology, Kobe University Graduate School of Medicine, Kobe, Japan.,Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, Tochigi, Japan.,Department of Biochemistry and Molecular Biology, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Katsuya Dezaki
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, Tochigi, Japan.,Faculty of Pharmacy, Iryo Sosei University, Iwaki, Japan
| | - Lei Wang
- Division of Integrative Physiology, Center for Integrative Physiology, Kansai Electric Power Medical Research Institute, Kobe, Japan.,Division of Diabetes, Metabolism and Endocrinology, Kobe University Graduate School of Medicine, Kobe, Japan.,Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, Tochigi, Japan
| | - Akio Inui
- Pharmacological Department of Herbal Medicine, Kagoshima University Graduate School of Medical & Dental Sciences, Kagoshima, Japan
| | - Yutaka Seino
- Division of Integrative Physiology, Center for Integrative Physiology, Kansai Electric Power Medical Research Institute, Kobe, Japan.,Center for Diabetes Research, Division of Diabetes and Endocrinology, Kansai Electric Power Medical Research Institute, Kobe, Japan
| | - Toshihiko Yada
- Division of Integrative Physiology, Center for Integrative Physiology, Kansai Electric Power Medical Research Institute, Kobe, Japan.,Division of Diabetes, Metabolism and Endocrinology, Kobe University Graduate School of Medicine, Kobe, Japan.,Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, Tochigi, Japan.,Pharmacological Department of Herbal Medicine, Kagoshima University Graduate School of Medical & Dental Sciences, Kagoshima, Japan
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8
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Gupta S, Rajappa S, Advani S, Agarwal A, Aggarwal S, Goswami C, Dattatreya Palanki S, Arya D, Patil S, Kodagali R. Prevalence of germline BRCA1 and BRCA2 mutations and variants among ovarian, primary peritoneal and fallopian tube cancer patients: A multicentre Indian study. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz426.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Goswami C, Dezaki K, Wang L, Inui A, Seino Y, Yada T. Ninjin-yoeito activates ghrelin-responsive and unresponsive NPY neurons in the arcuate nucleus and counteracts cisplatin-induced anorexia. Neuropeptides 2019; 75:58-64. [PMID: 30948035 DOI: 10.1016/j.npep.2019.03.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 03/04/2019] [Accepted: 03/05/2019] [Indexed: 02/06/2023]
Abstract
Reduced appetite or anorexia substantially deteriorates quality of life in various diseases including cancer, depression and heart failure. Furthermore, reduced appetite may stand upstream of sarcopenia and frailty. All these diseases are heavy burdens in the modern medicine and society. Therefore, the means that counteracts reduced appetite has been awaited, however, effective and well evidenced substance is not currently available. Ninjin-yoeito, a Japanese kampo medicine comprising twelve herbs has been used to treat anorexia. However, underlying mechanism is little known. Neuropeptide Y (NPY) and ghrelin are the most potent central and peripheral inducers of appetite, respectively. This study sought to determine whether Ninjin-yoeito influences NPY and/or ghrelin-responsive neurons in the hypothalamic arcuate nucleus (ARC), a feeding center. We isolated single neurons from ARC of mice and measured cytosolic Ca2+ concentration ([Ca2+]i) with fura-2 fluorescence imaging, followed by immunocytochemical identification of NPY neurons. Ninjin-yoeito (1-10 μg/ml) increased [Ca2+]i in ARC neurons, the majority (80%) of which was immunoreactive to NPY. One fraction of these Ninjin-yoeito-responsive NPY neurons also responded to ghrelin, while another fraction did not. Furthermore, oral administration of Ninjin-yoeito (1 g/kg/day) counteracted the reductions in food intake and body weight by cisplatin, an anti-cancer drug, in mice. These results demonstrate that Ninjin-yoeito directly targets both ghrelin-responsive and unresponsive NPY neurons in ARC and preserves food intake and body weight in cisplatin-treated anorectic mice. Ninjin-yoeito's signaling through ghrelin-responsive and ghrelin-unresponsive NPY pathways may provide strong mechanistic basis for this medicine for treating anorectic conditions associated with cancer, depression, heart failure, sarcopenia, frailty and aging.
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Affiliation(s)
- Chayon Goswami
- Center for Integrative Physiology, Division of Integrative Physiology, Kansai Electric Power Medical Research Institute, Kobe 650-0047, Japan; Division of System Neuroscience, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan; Department of Biochemistry and Molecular Biology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Katsuya Dezaki
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, Tochigi 320-0498, Japan
| | - Lei Wang
- Center for Integrative Physiology, Division of Integrative Physiology, Kansai Electric Power Medical Research Institute, Kobe 650-0047, Japan; Division of System Neuroscience, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan; Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, Tochigi 320-0498, Japan
| | - Akio Inui
- Pharmacological Department of Herbal Medicine, Kagoshima University Graduate School of Medical & Dental Sciences, Kagoshima 890-8544, Japan
| | - Yutaka Seino
- Center for Integrative Physiology, Division of Integrative Physiology, Kansai Electric Power Medical Research Institute, Kobe 650-0047, Japan
| | - Toshihiko Yada
- Center for Integrative Physiology, Division of Integrative Physiology, Kansai Electric Power Medical Research Institute, Kobe 650-0047, Japan; Division of System Neuroscience, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan; Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, Tochigi 320-0498, Japan; Pharmacological Department of Herbal Medicine, Kagoshima University Graduate School of Medical & Dental Sciences, Kagoshima 890-8544, Japan.
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Goswami C, Iwasaki Y, Yada T. Short-chain fatty acids suppress food intake by activating vagal afferent neurons. J Nutr Biochem 2018; 57:130-135. [PMID: 29702431 DOI: 10.1016/j.jnutbio.2018.03.009] [Citation(s) in RCA: 102] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 01/09/2018] [Accepted: 03/07/2018] [Indexed: 02/08/2023]
Abstract
Fermentable carbohydrates including dietary fibers and resistant starch produce short-chain fatty acids (SCFAs), including acetate, propionate and butyrate, through microbial fermentation in the intestine of rodents and humans. Consumption of fermentable carbohydrate and SCFAs suppress food intake, an effect involving the brain. However, their signaling pathway to the brain remains unclear. Vagal afferents serve to link intestinal information to the brain. In the present study, we explored possible role of vagal afferents in the anorexigenic effect of SCFAs. Intraperitoneal (ip) injection of three SCFA molecules (6 mmol/kg) suppressed food intake in fasted mice with the rank order of butyrate > propionate > acetate. The suppressions of feeding by butyrate, propionate and acetate were attenuated by vagotomy of hepatic branch and blunted by systemic treatment with capsaicin that denervates capsaicin-sensitive sensory nerves including vagal afferents. Ip injection of butyrate induced significant phosphorylation of extracellular-signal-regulated kinase 1/2, cellular activation markers, in nodose ganglia and their projection site, medial nucleus tractus solitaries. Moreover, butyrate directly interacted with single neurons isolated from nodose ganglia and induced intracellular Ca2+ signaling. The present results identify the vagal afferent as the novel pathway through which exogenous SCFAs execute the remote control of feeding behavior and possibly other brain functions. Vagal afferents might participate in suppression of feeding by intestine-born SCFAs.
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Affiliation(s)
- Chayon Goswami
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi 320-0498, Japan; Department of Biochemistry and Molecular Biology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh; Kansai Electric Power Medical Research Institute, 1-5-6 Minatojimaminamimachi, Chuou-ku, Kobe 650-0047, Japan
| | - Yusaku Iwasaki
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi 320-0498, Japan; Laboratory of Animal Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, 1-5 Hangi-cho, Shimogamo, Sakyo-ku, Kyoto 606-8522, Japan.
| | - Toshihiko Yada
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi 320-0498, Japan; Kansai Electric Power Medical Research Institute, 1-5-6 Minatojimaminamimachi, Chuou-ku, Kobe 650-0047, Japan.
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11
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Iwasaki Y, Sendo M, Dezaki K, Hira T, Sato T, Nakata M, Goswami C, Aoki R, Arai T, Kumari P, Hayakawa M, Masuda C, Okada T, Hara H, Drucker DJ, Yamada Y, Tokuda M, Yada T. GLP-1 release and vagal afferent activation mediate the beneficial metabolic and chronotherapeutic effects of D-allulose. Nat Commun 2018; 9:113. [PMID: 29317623 PMCID: PMC5760716 DOI: 10.1038/s41467-017-02488-y] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Accepted: 12/05/2017] [Indexed: 12/29/2022] Open
Abstract
Overeating and arrhythmic feeding promote obesity and diabetes. Glucagon-like peptide-1 receptor (GLP-1R) agonists are effective anti-obesity drugs but their use is limited by side effects. Here we show that oral administration of the non-calorie sweetener, rare sugar d-allulose (d-psicose), induces GLP-1 release, activates vagal afferent signaling, reduces food intake and promotes glucose tolerance in healthy and obese-diabetic animal models. Subchronic d-allulose administered at the light period (LP) onset ameliorates LP-specific hyperphagia, visceral obesity, and glucose intolerance. These effects are blunted by vagotomy or pharmacological GLP-1R blockade, and by genetic inactivation of GLP-1R signaling in whole body or selectively in vagal afferents. Our results identify d-allulose as prominent GLP-1 releaser that acts via vagal afferents to restrict feeding and hyperglycemia. Furthermore, when administered in a time-specific manner, chronic d-allulose corrects arrhythmic overeating, obesity and diabetes, suggesting that chronotherapeutic modulation of vagal afferent GLP-1R signaling may aid in treating metabolic disorders. The sweetener D-allulose has beneficial metabolic effects in animal models, but its mechanism of action was unclear. Here the authors report that D-allulose triggers GLP-1 release in the gut and GLP-1R signaling on vagal afferents, counteracting arrhythmic overeating, obesity and diabetes.
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Affiliation(s)
- Yusaku Iwasaki
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Mio Sendo
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Katsuya Dezaki
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Tohru Hira
- Research Faculty of Agriculture, Hokkaido University, Kita-9, Nishi-9, Kita-ku, Sapporo, 060-8589, Japan
| | - Takehiro Sato
- Department of Endocrinology, Diabetes and Geriatric Medicine, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Masanori Nakata
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Chayon Goswami
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Ryohei Aoki
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Takeshi Arai
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Parmila Kumari
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Masaki Hayakawa
- Graduate School of Agriculture, Hokkaido University, Kita-9, Nishi-9, Kita-ku, Sapporo, 060-8589, Japan
| | - Chiaki Masuda
- Department of Biochemistry and Molecular Biology, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo, 113-8602, Japan
| | - Takashi Okada
- Department of Biochemistry and Molecular Biology, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo, 113-8602, Japan
| | - Hiroshi Hara
- Research Faculty of Agriculture, Hokkaido University, Kita-9, Nishi-9, Kita-ku, Sapporo, 060-8589, Japan
| | - Daniel J Drucker
- Lunenfeld Tanenbaum Research Institute, Mt. Sinai Hospital, 600 University Avenue TCP5-1004 Mailbox 39, Toronto, ON, M5G 1X5, Canada
| | - Yuichiro Yamada
- Department of Endocrinology, Diabetes and Geriatric Medicine, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Masaaki Tokuda
- Faculty of Medicine, Department of Cell Physiology, Kagawa University, 1750-1, Ikenobe, Miki-cho, Kita-gun, Kagawa, 761-0793, Japan
| | - Toshihiko Yada
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan. .,Kansai Electric Power Medical Research Institute, 1-5-6 Minatojimaminamimachi, Chuou-ku, Kobe, 650-0047, Japan.
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Handique BK, Khan AQ, Goswami C, Prashnani M, Gupta C, Raju PLN. Crop Discrimination Using Multispectral Sensor Onboard Unmanned Aerial Vehicle. Proc Natl Acad Sci , India, Sect A Phys Sci 2017. [DOI: 10.1007/s40010-017-0443-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
Intestinal glucagon-like peptide-1 (GLP-1) and pancreatic insulin, released postprandially, commonly regulate glucose metabolism. Recent clinical experience indicates that the GLP-1R agonist and insulin in combination, compared to insulin alone, results in better glycemic and weight controls in type 2 diabetic patients. These observations suggest possible interactive effect of these hormones. These hormones, in addition to peripherally controlling glycemia, exert central regulation of food intake and glucose metabolism, the effect at least partly mediated by signaling to the brain via the vagal afferents. However, whether the vagal afferents are involved in the interactive effects of GLP-1 and insulin remains unknown. The present study explored possible cooperative effect of GLP-1 and insulin on vagal afferent neurons isolated from nodose ganglion (NG) of mice, while monitoring the neuronal activity by measuring cytosolic Ca2+ concentration ([Ca2+]i) with fura-2. GLP-1 at 10-8M increased [Ca2+]i in 8-11% of single NG neurons. GLP-1-induced [Ca2+]i increases were inhibited by GLP-1 receptor antagonist exendin (9-39). Majority (92%) of GLP-1-responseive NG neurons also responded to 10-7M insulin with [Ca2+]i increases. Both GLP-1 and insulin at lower concentration of 10-9M induced [Ca2+]i increases with smaller amplitude in lesser NG neuron population (4-7%). These hormones at 10-9M in combination recruited the unresponsive neurons to [Ca2+]i increases, and induced [Ca2+]i increases with greater amplitude in the responsive neurons. The results demonstrate that GLP-1 and insulin synergistically and additively activate vagal afferent neurons. This interaction may be linked to the postprandial functions mediated commonly by GLP-1 and insulin and in the beneficial outcome of the therapy with GLP-1 receptor agonist and insulin in combination.
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Affiliation(s)
- Yusaku Iwasaki
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi 320-0498, Japan
| | - Chayon Goswami
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi 320-0498, Japan
| | - Toshihiko Yada
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi 320-0498, Japan.
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Parikh P, Prabhash K, Naik R, Vaid AK, Goswami C, Rajappa S, Noronha V, Joshi A, Chacko RT, Aggarwal S, Doval DC. Practical recommendation for rash and diarrhea management in Indian patients treated with tyrosine kinase inhibitors for the treatment of non-small cell lung cancer. Indian J Cancer 2017; 53:87-91. [PMID: 27146751 DOI: 10.4103/0019-509x.180863] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Tyrosine kinase inhibitors (TKIs) are a pharmaceutical class of small molecules, orally available with manageable safety profile, approved worldwide for the treatment of several neoplasms, including lung, breast, kidney and pancreatic cancer as well as gastro-intestinal stromal tumours and chronic myeloid leukaemia. In recent years, management of lung cancer has been moving towards molecular-guided treatment, and the best example of this new approach is the use of the tyrosine kinase inhibitors (TKIs) in patients with mutations in the epidermal growth factor receptor (EGFR). The identification of molecular predictors of response can allow the selection of patients who will be the most likely to respond to these tyrosine kinase inhibitors (TKIs). Gastrointestinal (GI) adverse events (AEs) are frequently observed in patients receiving EGFR tyrosine kinase inhibitor therapy and are most impactful on the patient's quality of life. Dermatologic side effects are also relatively common among patients treated with EGFR inhibitors. Evidence has emerged in recent years to suggest that the incidence and severity of rash, positively correlated with response to treatment.These skin disorders are generally mild or moderate in severity and can be managed by appropriate interventions or by reducing or interrupting the dose. Appropriate and timely management make it possible to continue a patient's quality of life and maintain compliance; however if these adverse events (AEs) are not managed appropriately, and become more severe, treatment cessation may be warranted compromising clinical outcome. Strategies to improve the assessment and management of TKI related skin AEs are therefore essential to ensure compliance with TKI therapy, thereby enabling patients to achieve optimal benefits. This article provides a consensus on practical recommendation for the prevention and management of diarrhoea and rash in Non-Small Cell Lung Cancer (NSCLC) patients receiving TKIs.
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Affiliation(s)
| | - K Prabhash
- Department of Medical Oncology, Lung/Head and Neck Cancer, Tata Memorial Hospital, Mumbai, Maharashtra, India
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15
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Kumar S, Singh U, Goswami C, Singru PS. Transient receptor potential vanilloid 5 (TRPV5), a highly Ca 2+ -selective TRP channel in the rat brain: relevance to neuroendocrine regulation. J Neuroendocrinol 2017; 29. [PMID: 28235149 DOI: 10.1111/jne.12466] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 02/21/2017] [Accepted: 02/21/2017] [Indexed: 11/28/2022]
Abstract
Recent studies suggest an important role for transient receptor potential vanilloid (TRPV) ion channels in neural and neuroendocrine regulation. The TRPV subfamily consists of six members: TRPV1-6. While the neuroanatomical and functional correlates of TRPV1-4 have been studied extensively, relevant information about TRPV5 and TRPV6, which are highly selective for Ca2+ , is limited. We detected TRPV5 mRNA expression in the olfactory bulb, cortex, hypothalamus, hippocampus, midbrain, brainstem and cerebellum of the rat. TRPV5-immunoreactive neurones were conspicuously seen in the hypothalamic paraventricular (PVN), supraoptic (SON), accessory neurosecretory (ANS), supraoptic nucleus, retrochiasmatic part (SOR), arcuate (ARC) and medial tuberal nuclei, hippocampus, midbrain, brainstem and cerebellum. Glial cells also showed TRPV5-immunoreactivity. To test the neuroendocrine relevance of TRPV5, we focused on vasopressin, oxytocin and cocaine- and amphetamine-regulated transcript (CART) as representative candidate markers with which TRPV5 may co-exist. In the hypothalamic neurones, co-expression of TRPV5 was observed with vasopressin (PVN: 50.73±3.82%; SON: 75.91±2.34%; ANS: 49.12±4.28%; SOR: 100%) and oxytocin (PVN: 6.88±1.21; SON: 63.34±5.69%; ANS: 20.4±4.14; SOR: 86.5±1.74%). While ARC neurones express oestrogen receptors, 17β-oestradiol regulates TRPV5, as well as CART neurones and astrocytes, in the ARC. Furthermore, ARC CART neurones are known to project to the preoptic area, and innervate and regulate GnRH neurones. Using double-immunofluorescence, glial fibrillary acidic protein-labelled astrocytes and the majority of CART neurones in the ARC showed TRPV5-immunoreactivity. Following iontophoresis of retrograde neuronal tracer, cholera toxin β (CtB) into the anteroventral periventricular nucleus and median preoptic nucleus, retrograde accumulation of CtB was observed in most TRPV5-equipped ARC CART neurones. Next, we determined the response of TRPV5-elements in the ARC during the oestrous cycle. Compared to pro-oestrus, a significant increase (P<.001) in the percentage of TRPV5-expressing CART neurones was observed during oestrus, metoestrus, and dioestrus. TRPV5-immunoreactivity in the astrocytes, however, showed a significant increase during metoestrus and dioestrus. We suggest that the TRPV5 ion channel may serve as an important regulator of neural and neuroendocrine pathways in the brain.
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Affiliation(s)
- S Kumar
- School of Biological Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, India
| | - U Singh
- School of Biological Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, India
| | - C Goswami
- School of Biological Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, India
| | - P S Singru
- School of Biological Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, India
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Handique BK, Das PT, Goswami J, Goswami C, Singh PS, Prabhakar CJ, Bajpeyi CM, Raju PLN. Expansion of Sericulture in India Using Geospatial Tools and Web Technology. CURR SCI INDIA 2016. [DOI: 10.18520/cs/v111/i8/1312-1318] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Goswami C, Shimada Y, Yoshimura M, Mondal A, Oda SI, Tanaka T, Sakai T, Sakata I. Motilin Stimulates Gastric Acid Secretion in Coordination with Ghrelin in Suncus murinus. PLoS One 2015; 10:e0131554. [PMID: 26115342 PMCID: PMC4482737 DOI: 10.1371/journal.pone.0131554] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Accepted: 06/03/2015] [Indexed: 12/13/2022] Open
Abstract
Motilin and ghrelin constitute a peptide family, and these hormones are important for the regulation of gastrointestinal motility. In this study, we examined the effect of motilin and ghrelin on gastric acid secretion in anesthetized suncus (house musk shrew, Suncus murinus), a ghrelin- and motilin-producing mammal. We first established a gastric lumen-perfusion system in the suncus and confirmed that intravenous (i.v.) administration of histamine (1 mg/kg body weight) stimulated acid secretion. Motilin (0.1, 1.0, and 10 μg/kg BW) stimulated the acid output in a dose-dependent manner in suncus, whereas ghrelin (0.1, 1.0, and 10 μg/kg BW) alone did not induce acid output. Furthermore, in comparison with the vehicle administration, the co-administration of low-dose (1 μg/kg BW) motilin and ghrelin significantly stimulated gastric acid secretion, whereas either motilin (1 μg/kg BW) or ghrelin (1 μg/kg BW) alone did not significantly induce gastric acid secretion. This indicates an additive role of ghrelin in motilin-induced gastric acid secretion. We then investigated the pathways of motilin/motilin and ghrelin-stimulated acid secretion using receptor antagonists. Treatment with YM 022 (a CCK-B receptor antagonist) and atropine (a muscarinic acetylcholine receptor antagonist) had no effect on motilin or motilin-ghrelin co-administration-induced acid output. In contrast, famotidine (a histamine H2 receptor antagonist) completely inhibited motilin-stimulated acid secretion and co-administration of motilin and ghrelin induced gastric acid output. This is the first report demonstrating that motilin stimulates gastric secretion in mammals. Our results also suggest that motilin and co-administration of motilin and ghrelin stimulate gastric acid secretion via the histamine-mediated pathway in suncus.
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Affiliation(s)
- Chayon Goswami
- Area of Regulatory Biology, Division of Life Science, Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| | - Yoshiaki Shimada
- Area of Regulatory Biology, Division of Life Science, Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| | - Makoto Yoshimura
- Area of Regulatory Biology, Division of Life Science, Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| | - Anupom Mondal
- Area of Regulatory Biology, Division of Life Science, Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| | - Sen-ichi Oda
- Laboratory of Animal Management and Resources, Department of Zoology, Okayama University of Science, Okayama, Japan
| | - Toru Tanaka
- Faculty of Pharmaceutical Sciences, Josai University, Saitama, Japan
| | - Takafumi Sakai
- Area of Regulatory Biology, Division of Life Science, Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| | - Ichiro Sakata
- Area of Regulatory Biology, Division of Life Science, Graduate School of Science and Engineering, Saitama University, Saitama, Japan
- * E-mail:
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Goswami C, Tanaka T, Jogahara T, Sakai T, Sakata I. Motilin stimulates pepsinogen secretion in Suncus murinus. Biochem Biophys Res Commun 2015; 462:263-8. [PMID: 25957475 DOI: 10.1016/j.bbrc.2015.04.129] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Accepted: 04/26/2015] [Indexed: 12/13/2022]
Abstract
Motilin and ghrelin are gastrointestinal hormones that stimulate the migrating motor complex (MMC) of gastrointestinal motility during the fasting state. In this study, we examined the effect of motilin and ghrelin on pepsinogen secretion in anesthetized suncus (house musk shrew, Suncus murinus), a ghrelin- and motilin-producing mammal. By using a gastric lumen-perfusion system, we found that the intravenous administration of carbachol and motilin stimulated pepsinogen secretion, the latter in a dose-dependent manner, whereas ghrelin had no effect. We then investigated the pathways of motilin-induced pepsinogen secretion using acetylcholine receptor antagonists. Treatment with atropine, a muscarinic acetylcholine receptor antagonist, completely inhibited both carbachol and motilin-induced pepsinogen secretion. Motilin-induced pepsinogen secretion was observed in the vagotomized suncus. This is the first report demonstrating that motilin stimulates pepsinogen secretion, and suggest that this effect occurs through a cholinergic pathway in suncus.
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Affiliation(s)
- Chayon Goswami
- Area of Regulatory Biology, Division of Life Science, Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| | - Toru Tanaka
- Faculty of Pharmaceutical Sciences, Department of Pharmaceutical and Health Sciences, Josai University, Saitama, Japan
| | - Takamichi Jogahara
- Laboratory of Animal Management and Resources, Department of Zoology, Faculty of Science, Okayama University of Science, Okayama, Japan
| | - Takafumi Sakai
- Area of Regulatory Biology, Division of Life Science, Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| | - Ichiro Sakata
- Area of Regulatory Biology, Division of Life Science, Graduate School of Science and Engineering, Saitama University, Saitama, Japan.
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Doval D, Prabhash K, Patil S, Chaturvedi H, Goswami C, Vaid A, Desai S, Dutt S, Veldore V, Jambhekar N, Mehta A, Hazarika D, Azam S, Gawande S, Gupta S. Clinical and epidemiological study of EGFR mutations and EML4-ALK fusion genes among Indian patients with adenocarcinoma of the lung. Onco Targets Ther 2015; 8:117-23. [PMID: 25609979 PMCID: PMC4293920 DOI: 10.2147/ott.s74820] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Background Mutation in the tyrosine kinase domain of epidermal growth factor receptor (EGFR) is a common feature observed in lung adenocarcinoma. A fusion gene between echinoderm microtubule-associated protein-like 4 (EML4) and the intracellular domain of anaplastic lymphoma kinase (ALK), named EML4-ALK, has been identified in a subset of non-small-cell lung cancer (NSCLC) tumors. The objective of this study was to determine the prevalence of EGFR mutations and EML4-ALK fusions in Indian patients with NSCLC (adenocarcinoma) as well as evaluate their clinical characteristics. Patients and methods Patients with NSCLC, adenocarcinoma histology, whose tumors had been tested for EGFR mutational status, were considered for this study. ALK gene rearrangement was detected by fluorescence in situ hybridization using the Vysis ALK Break Apart Rearrangement Probe Kit. ALK mutation was tested in samples that were negative for EGFR mutation. Results A total of 500 NSCLC adenocarcinoma patients were enrolled across six centers. There were 337 (67.4%) men and 163 (32.6%) women with a median age of 58 years. One hundred and sixty-four (32.8%) blocks were positive for EGFR mutations, whereas 336 (67.2%) were EGFR wild-type. Of the 336 EGFR-negative blocks, EML4-ALK fusion gene was present in 15 (4.5%) patients, whereas 321 (95.5%) tumors were EML4-ALK negative. The overall incidence of EML4-ALK fusion gene was 3% (15/500). Conclusion The incidence of EGFR mutations (33%) in this Indian population is close to the reported incidence in Asian patients. EML4-ALK gene fusions are present in lung adenocarcinomas from Indian patients, and the 3% incidence of EML4-ALK gene fusion in EGFR mutation-negative cases is similar to what has been observed in other Western and Asian populations. The mutual exclusivity of EML4-ALK and EGFR mutations suggests implementation of biomarker testing for tumors harboring ALK rearrangements in order to identify patients that can benefit from newer targeted therapies.
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Affiliation(s)
- Dc Doval
- Rajiv Gandhi Cancer Institute and Research Centre, New Delhi, India
| | | | - S Patil
- Bangalore Institute of Oncology, HCG Group, Bengaluru, India
| | | | - C Goswami
- B. P. Poddar Hospital, Kolkata, India
| | - Ak Vaid
- Medanta The Medicity, Gurgaon, India
| | - S Desai
- Tata Memorial Hospital, Mumbai, India
| | - S Dutt
- Oncquest Laboratories Ltd., New Delhi, India
| | - Vh Veldore
- Triesta Reference Laboratory, HCG Group, Bengaluru, India
| | | | - A Mehta
- Rajiv Gandhi Cancer Institute and Research Centre, New Delhi, India
| | - D Hazarika
- Triesta Reference Laboratory, HCG Group, Bengaluru, India
| | - S Azam
- Rajiv Gandhi Cancer Institute and Research Centre, New Delhi, India
| | | | - S Gupta
- Catalyst Clinical Services Pvt. Ltd., New Delhi, India
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Doval D, Prabhash K, Patil S, Chaturvedi H, Goswami C, Vaid A, Desai S, Dutt S, Veldore V, Jambhekar N, Mehta A, Hazarika D, Azam S, Gupta S, Gawande S. Demographic and Epidemiological Characteristic of Egfr Mutation and Alk Gene Rearrangement Among Indian Patients with Lung Adenocarcinoma. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu349.82] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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21
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Abstract
The kinetics of chromic acid oxidation of propanaldehyde, butyraldehyde and isobutyraldehyde in aq. acetic acid have been studied. The product of the oxidation is the corresponding carboxylic acid. The reaction is of first order with respect to each the acid chromate ion, HCrO4
⊖, and the aldehyde but of second order to hydrogen ion. The rate increases with proportion of acetic acid in the solution. The activation parameters for the oxidation and enolisation reactions have been evaluated. The rate of enolisation under similar condition is less than that of oxidation. A mechanism in which the first step is the rapid reversible formation of a chromate ester followed by a hydrideion transfer in the rate determining step has been suggested.
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Affiliation(s)
- C. Goswami
- Department of Chemistry, University of Jodhpur, Jodhpur
| | - K. K. Banerji
- Department of Chemistry, University of Jodhpur, Jodhpur
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22
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Parikh PM, Gupta S, Dawood S, Rugo H, Bhattacharyya GS, Agarwal A, Chacko R, Sahoo TP, Babu G, Agarwal S, Munshi A, Goswami C, Smruti BK, Bondarde S, Desai C, Rajappa S, Somani N, Singh M, Nimmagadda R, Pavitran K, Mehta A, Parmar V, Desai S, Nair R, Doval D. ICON 2013: Practical consensus recommendations for hormone receptor-positive Her2-negative advanced or metastatic breastcancer. Indian J Cancer 2014; 51:73-9. [DOI: 10.4103/0019-509x.134650] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Mondal A, Aizawa S, Sakata I, Goswami C, Oda SI, Sakai T. Mechanism of ghrelin-induced gastric contractions in Suncus murinus (house musk shrew): involvement of intrinsic primary afferent neurons. PLoS One 2013; 8:e60365. [PMID: 23565235 PMCID: PMC3614873 DOI: 10.1371/journal.pone.0060365] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Accepted: 02/26/2013] [Indexed: 12/13/2022] Open
Abstract
Here, we have reported that motilin can induce contractions in a dose-dependent manner in isolated Suncus murinus (house musk shrew) stomach. We have also shown that after pretreatment with a low dose of motilin (10(-10) M), ghrelin also induces gastric contractions at levels of 10(-10) M to 10(-7) M. However, the neural mechanism of ghrelin action in the stomach has not been fully revealed. In the present study, we studied the mechanism of ghrelin-induced contraction in vitro using a pharmacological method. The responses to ghrelin in the stomach were almost completely abolished by hexamethonium and were significantly suppressed by the administration of phentolamine, prazosin, ondansetron, and naloxone. Additionally, N-nitro-l-arginine methylester significantly potentiated the contractions. Importantly, the mucosa is essential for ghrelin-induced, but not motilin-induced, gastric contractions. To evaluate the involvement of intrinsic primary afferent neurons (IPANs), which are multiaxonal neurons that pass signals from the mucosa to the myenteric plexus, we examined the effect of the IPAN-related pathway on ghrelin-induced contractions and found that pretreatment with adenosine and tachykinergic receptor 3 antagonists (SR142801) significantly eliminated the contractions and GR113808 (5-hydroxytryptamine receptor 4 antagonist) almost completely eliminated it. The results indicate that ghrelin stimulates and modulates suncus gastric contractions through cholinergic, adrenergic, serotonergic, opioidergic neurons and nitric oxide synthases in the myenteric plexus. The mucosa is also important for ghrelin-induced gastric contractions, and IPANs may be the important interneurons that pass the signal from the mucosa to the myenteric plexus.
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Affiliation(s)
- Anupom Mondal
- Area of Regulatory Biology, Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| | - Sayaka Aizawa
- Area of Regulatory Biology, Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| | - Ichiro Sakata
- Area of Regulatory Biology, Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| | - Chayon Goswami
- Area of Regulatory Biology, Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| | - Sen-ichi Oda
- Laboratory of Animal Management and Resources, Department of Zoology, Okayama University of Science, Okayama, Japan
| | - Takafumi Sakai
- Area of Regulatory Biology, Graduate School of Science and Engineering, Saitama University, Saitama, Japan
- * E-mail:
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Gökmen-Polar Y, Toroni RA, Goswami C, Sanders KL, Mehta R, Sirimalle U, Tanasa B, Shen C, Li L, Ivan M, Badve S, Sledge GW. P5-06-01: Gene Expression Analysis of Resistance to Bevacizumab in a VEGF-Reinforced Xenograft Model of ER-Positive Breast Cancer. Cancer Res 2011. [DOI: 10.1158/0008-5472.sabcs11-p5-06-01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Bevacizumab, a monoclonal antibody targeting vascular endothelial growth factor (VEGF), had promising therapeutic efficacy in breast cancer. However, intrinsic or acquired resistance is common in the clinic. To improve our understanding of the underlying mechanisms of resistance to bevacizumab (BEV), we report the gene expression analysis of resistance to bevacizumab in a VEGF-overexpressing xenograft model of ER-positive breast cancer.
Methods: We developed a nude mouse xenograft model of resistance to anti-VEGF therapy with BEV in which MCF-7 control (ML20) or MCF-7 VEGF (MV165) transfectants were implanted in mammary fat pads, allowed to grow, then treated with BEV, with collection of tumor at early or late time points (while responding (R) to or progressing (NR) on anti-VEGF therapy). To elucidate differentially expressed gene profiling associated with tumor resistance to BEV, we performed whole-genome gene expression analysis (Human WG-6v2 Expression Beadchips, Illumina) and miRNA profiling (TaqMan ***ArrayHuman MicroRNAA+B Cards Set v3.0, Applied Biosystems). Validation of the chosen genes was performed using quantitative real-time RT-PCR (qRT-PCR).
Results: Gene expression analysis revealed differentially regulated genes in the MV165-NR group compared with the MV165-R group. Among the significant genes, Follistatin (FST) and HEY2 were the top genes upregulated in NR compared to R by ANOVA. Expression of HEY2 is induced by the Notch signaling pathway. Using qRT-PCR, we validated the expression of FST and Notch in our system. FST was significantly decreased (Fold change= −3.2; P=0.03) in the R group compared with vehicle in MV165 xenografts. In contrast to R group, FST was upregulated significantly (Fold change= 9.3; P=0.05) in the NR group. Notch4 displayed increased levels of expression in NR group, but it did not reach significance (P=0.23). In addition, correlation of mRNA and miRNA profiles showed that miRNAs targeting FST and Notch4 were differentially regulated in NR group compared to R group in MV165 xenograft tumors. Among the miRNAs, TGF-β-induced oncomiR miR-181a is up-regulated in NR and targets both FST and Notch4. Other miRNAs that target both Notch4 and FST include miR-1, miR-133a, miR-133b, and mir-449b. Conclusion: Our data serve as a potential mechanistic explanation for acquired resistance to bevacizumab. These data may shed light on the transitory effect of BEV observed in the E2100 firstline metastatic breast cancer trial, where VEGF-targeted therapy prolongs progression-free survival in metastatic breast cancer without improving overall survival.
Citation Information: Cancer Res 2011;71(24 Suppl):Abstract nr P5-06-01.
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Affiliation(s)
- Y Gökmen-Polar
- 1Indiana University School of Medicine, Indianapolis, IN; University of Medicine and Pharmac, La Jolla, CA
| | - RA Toroni
- 1Indiana University School of Medicine, Indianapolis, IN; University of Medicine and Pharmac, La Jolla, CA
| | - C Goswami
- 1Indiana University School of Medicine, Indianapolis, IN; University of Medicine and Pharmac, La Jolla, CA
| | - KL Sanders
- 1Indiana University School of Medicine, Indianapolis, IN; University of Medicine and Pharmac, La Jolla, CA
| | - R Mehta
- 1Indiana University School of Medicine, Indianapolis, IN; University of Medicine and Pharmac, La Jolla, CA
| | - U Sirimalle
- 1Indiana University School of Medicine, Indianapolis, IN; University of Medicine and Pharmac, La Jolla, CA
| | - B Tanasa
- 1Indiana University School of Medicine, Indianapolis, IN; University of Medicine and Pharmac, La Jolla, CA
| | - C Shen
- 1Indiana University School of Medicine, Indianapolis, IN; University of Medicine and Pharmac, La Jolla, CA
| | - L Li
- 1Indiana University School of Medicine, Indianapolis, IN; University of Medicine and Pharmac, La Jolla, CA
| | - M Ivan
- 1Indiana University School of Medicine, Indianapolis, IN; University of Medicine and Pharmac, La Jolla, CA
| | - S Badve
- 1Indiana University School of Medicine, Indianapolis, IN; University of Medicine and Pharmac, La Jolla, CA
| | - GW Sledge
- 1Indiana University School of Medicine, Indianapolis, IN; University of Medicine and Pharmac, La Jolla, CA
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Mina LA, Gokmen-Polar Y, Goswami C, Storniolo AM, Li L, Badve S, Sledge GW. P2-13-01: Gene Profiling of Whole Blood May Identify Patients with BRCA Mutations. Cancer Res 2011. [DOI: 10.1158/0008-5472.sabcs11-p2-13-01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background:The BRCA1 and the BRCA2 proteins play a role in DNA repair and confer genomic stability to the cell. Identifying BRCA mutation carriers has become an important tool for prevention as well as guiding therapy in cancer patients. We proposed to test the hypothesis that gene expression analysis of peripheral whole blood can reliably detect these mutations.
Materials and methods: Following IRB approval, 10cc of blood was collected from 36 women (BRCA1 (n=8), BRCA2 (n=9), Hereditary breast cancer without BRCA (FAM) (n=7), sporadic breast cancer (SPO) (n=11)). 3 of BRCA1 and 5 of BRCA2 samples were from women without cancer. Following RNA extraction (using the method described by Beekman et al) and quality assessment, Illumina® Whole-Genome DASL™ microarray (Human Ref-8 BeadChips) analysis was performed. The raw data was normalized and analyzed using Partek® Genomic Suite. Differentially expressed genes were identified using ANOVA analysis. Geneset specific supervised analysis was performed to visualize the inherent similarities and differences in the gene expression amongst different groups for 1) DNA repair and 2) Immune-system-related genes. Ingenuity Pathway Analysis (IPA) was performed to interpret the data in the context of biological processes, pathways and networks.
Results: Twenty-nine of the 87 immune-related genes were up-regulated in BRCA1 and BRCA2 groups compared to SPO or FAM groups; these included IL7R, CD53, CD2, CD48 and HLA-DRA. Twenty-five of the 79 DNA repair genes were up-regulated in BRCA1 and BRCA2; these included FANCC, RAD51L3, MSH2, MSH6 and PCNA. In IPA analysis, the comparison of BRCA1 vs. REST (BRCA2 + FAM + SPO) showed a strong immunologic signal, with the top altered biological processes including “Immunologic disease”, “Infection mechanism”, “Immune cell trafficking” and “cell-mediated immune response “. The top 5 canonical pathways also reflected a similar pattern and included “iCOS-iCOSL Signaling in T Helper Cells”, “OX40 Signaling Pathway”, “Calcium-induced T Lymphocyte”, “Apoptosis Regulation of IL-2 Expression in Activated and Anergic T Lymphocytes” and “Protein Ubiquitination Pathway”. When BRCA2 was compared with the REST (BRCA1 + FAM + SPO), a much weaker signal was noted with none of the canonical pathways being significantly altered. PAM analysis showed that a set of 16 genes could differentiate the BRCA patients from the rest with an error rate of 5%. Further validation of this geneset is being performed.
Conclusion: Gene profiling in whole blood may offer an easy, reliable and inexpensive way to identify patients with BRCA mutation. Further studies are currently underway to validate our results in a larger patient population.
Citation Information: Cancer Res 2011;71(24 Suppl):Abstract nr P2-13-01.
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Affiliation(s)
- LA Mina
- 1Indiana University School of Medicine, Indianapolis, IN
| | - Y Gokmen-Polar
- 1Indiana University School of Medicine, Indianapolis, IN
| | - C Goswami
- 1Indiana University School of Medicine, Indianapolis, IN
| | - AM Storniolo
- 1Indiana University School of Medicine, Indianapolis, IN
| | - L Li
- 1Indiana University School of Medicine, Indianapolis, IN
| | - S Badve
- 1Indiana University School of Medicine, Indianapolis, IN
| | - GW Sledge
- 1Indiana University School of Medicine, Indianapolis, IN
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Gökmen-Polar Y, Toroni RA, Goswami C, Sanders KL, Sirimalle U, Mehta R, Li L, Ivan M, Badve S, Sledge GW. P3-04-02: Bevacizumab Treatment Alters Intrinsic Subtypes in a VEGF-Reinforced Xenograft Model of ER-Positive Breast Cancer. Cancer Res 2011. [DOI: 10.1158/0008-5472.sabcs11-p3-04-02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Anti-vascular endothelial growth factor (anti-VEGF) therapy improves disease-free but not overall survival in metastatic breast cancer. To seek further insight on resistance to anti-VEGF antibody bevacizumab (BEV) at the molecular level, we developed breast cancer xenograft models allowing comparison of tumor response at different time-points. Here we report the gene expression and miRNA analyses of response and non-response to BEV in these models.
Methods: MCF-7 cells transfected with control vector (ML20) or VEGF (MV165) were implanted into the mammary fat pads of athymic mice. Tumors from short-term treatment with BEV (3 weeks; Responders to BEV, R) or long-term treatment (8 weeks; Non-Responders, NR) or with vehicle control group (V) were subjected to whole-genome gene expression analysis (Human WG-6v2 Expression Beadchips, Illumina) and miRNA profiling (TaqMan ArrayHuman MicroRNA A+B Cards Set v3.0, Applied Biosystems).Validation of the chosen genes was performed using quantitative real-time RT-PCR (qRT-PCR) and Immunohistochemistry (IHC). Results: Short-term treatment to BEV (3 weeks; 5 mg/kg, i.p./twice weekly) inhibited primary tumor growth significantly in MV165 xenografts compared with vehicle control, whereas BEV treatment did not affect the tumor growth in the ML20 model. MV165 xenografts progressed after 8 weeks of BEV treatment. Gene set enrichment analysis (GSEA) revealed that luminal A-related gene sets were enriched in MV165-R compared to MV165-NR group including DESMEDT (ESR1), SMID_Breast_Cancer_Luminal_A_up, and MASSARWEH_ Tamoxifen_Resistance_ Down. Myoepithelial-specific gene sets were upregulated in both the R and NR groups compared with the vehicle group. qRT-PCR analysis showed that estrogen receptor alpha (ESR1) representative for luminal A decreased significantly in the MV-165-NR group (P=0.001) compared to vehicle. In contrast, Cytokeratin 5 (KRT5) levels increased significantly in both R (P=0.02) and NR (P=0.03) groups. In addition, KRT14 was upregulated in R (P= 0.04) and in NR (P=0.14) group in comparison with the vehicle group, suggesting the upregulation of myoepithelial phenotype specific to BEV treated MV165 model, but not ML20 model. Similar results were obtained by IHC. Consistent with mRNA changes, ESR1 regulated miRNA such as miR-107 (P=0.007) and miRNA important in tamoxifen resistance such as mir-451 (P= 0.0003) were also altered in MV165-NR group compared to vehicle. Conclusion: These results suggest that treatment with BEV may alter the intrinsic subtypes in the presence of VEGF expression. These data may help to explain the variable results to anti-VEGF therapy based on the duration of BEV treatment.
Citation Information: Cancer Res 2011;71(24 Suppl):Abstract nr P3-04-02.
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Affiliation(s)
| | - RA Toroni
- 1Indiana University School of Medicine, Indianapolis, IN
| | - C Goswami
- 1Indiana University School of Medicine, Indianapolis, IN
| | - KL Sanders
- 1Indiana University School of Medicine, Indianapolis, IN
| | - U Sirimalle
- 1Indiana University School of Medicine, Indianapolis, IN
| | - R Mehta
- 1Indiana University School of Medicine, Indianapolis, IN
| | - L Li
- 1Indiana University School of Medicine, Indianapolis, IN
| | - M Ivan
- 1Indiana University School of Medicine, Indianapolis, IN
| | - S Badve
- 1Indiana University School of Medicine, Indianapolis, IN
| | - GW Sledge
- 1Indiana University School of Medicine, Indianapolis, IN
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Parikh PM, Gupta S, Parikh B, Smruti BK, Issrani J, Topiwala S, Goswami C, Bhattacharya GS, Sen T, Sekhon JS, Malhotra H, Nag S, Chacko RT, Govind KB, Raja T, Vaid AK, Doval DC, Gupta S, Das PK. Management of primary and metastatic triple negative breast cancer: perceptions of oncologists from India. Indian J Cancer 2011; 48:158-64. [PMID: 21768659 DOI: 10.4103/0019-509x.82874] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND In order to document the understanding of current evidence for the management of triple negative breast cancer and application of this knowledge in daily practice, we conducted an interactive survey of practicing Indian oncologists. MATERIALS AND METHODS A core group of academic oncologists devised two hypothetical triple negative cases (metastatic and early breast cancer, respectively) and multiple choice options under different clinical circumstances. The respondents were practicing oncologists in different Indian cities who participated in either an online survey or a meeting. The participants electronically chose their preferred option based on their everyday practice. RESULTS A total of 152 oncologists participated. Just over half (53.8%) preferred taxane based chemotherapy as first-line chemotherapy in the metastatic setting. In the adjuvant setting, a taxane regimen was chosen by 61%. Over half of respondents (52.6%) underestimated the baseline survival of a patient with node positive triple-negative tumor and 18.9% overestimated this survival compared to the estimate of the Adjuvant! program. DISCUSSION This data offers insight into the perceptions and practice of a diverse cross-section of practicing oncologists in India with respect to their therapeutic choices in metastatic and adjuvant settings in triple negative breast cancer.
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Affiliation(s)
- P M Parikh
- Indian Co-operative Oncology Network, Mumbai, India.
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Badve SS, Goswami C, Gokmen-Polar Y, Nelson RP, Henley J, Miller N, Jain RK, Mehta RJ, Zaheer NA, Sledge GW, Li L, Kesler K, Loehrer PJ. Molecular predictors of metastases and stage of thymoma. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.10599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Duchnowska R, Jassem J, Szutowicz E, Biernat W, Jankowski T, Och W, Staszkiewicz R, Chudzik M, Rogowski W, Flores N, Woditschka S, Li L, Goswami C, Thorat MA, Gokmen-Polar Y, Sledge GW, Steeg PS, Palmieri D, Badve SS. RAD51 and brain metastases (BM) in patients (pts) with HER2+ breast cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Dattatreya S, Goswami C. Cetuximab plus radiotherapy in patients with unresectable locally advanced squamous cell carcinoma of head and neck region - A open labelled single arm phase II study. Indian J Cancer 2011; 48:154-7. [DOI: 10.4103/0019-509x.82873] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Abstract
Transient receptor potential vanilloid subtype 1 (TRPV1), a non-selective cation channel, is present endogenously in dorsal root ganglia (DRG) neurons. It is involved in the recognition of various pain producing physical and chemical stimuli. In this work, we demonstrate that expression of TRPV1 induces neurite-like structures and filopodia and that the expressed protein is localized at the filopodial tips. Exogenous expression of TRPV1 induces filopodia both in DRG neuron-derived F11 cells and in non-neuronal cells, such as HeLa and human embryonic kidney (HEK) cells. We find that some of the TRPV1 expression-induced filopodia contain microtubules and microtubule-associated components, and establish cell-to-cell extensions. Using live cell microscopy, we demonstrate that the filopodia are responsive to TRPV1-specific ligands. But both, initiation and subsequent cell-to-cell extension formation, is independent of TRPV1 channel activity. The N-terminal intracellular domain of TRPV1 is sufficient for filopodial structure initiation while the C-terminal cytoplasmic domain is involved in the stabilization of microtubules within these structures. In addition, exogenous expression of TRPV1 results in altered cellular distribution and in enhanced endogenous expression of non-conventional myosin motors, namely myosin IIA and myosin IIIA. These data indicate a novel role of TRPV1 in the regulation of cellular morphology and cellular contact formation.
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Affiliation(s)
- C Goswami
- Signal Transduction in Pain and Mental Retardation, Department of Human Molecular Genetics, Max Planck Institute for Molecular Genetics, Berlin, Germany.
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Abstract
While the importance of Ca(2+) channel activity in axonal path finding is established, the underlying mechanisms are not clear. Here, we show that transient receptor potential vanilloid receptor 1 (TRPV1), a member of the TRP superfamily of nonspecific ion channels, is physically and functionally present at dynamic neuronal extensions, including growth cones. These nonselective cation channels sense exogenous ligands, such as resenifera toxin, and endogenous ligands, such as N-arachidonoyl-dopamine (NADA), and affect the integrity of microtubule cytoskeleton. Using TRPV1-transiently transfected F11 cells and embryonic dorsal root ganglia explants, we show that activation of TRPV1 results in growth cone retraction, and collapse and formation of varicosities along neurites. These changes were due to TRPV1-activation-mediated disassembly of microtubules and are partly Ca(2+)-independent. Prolonged activation with very low doses (1 nM) of NADA results in shortening of neurites in the majority of isolectin B4-positive dorsal root ganglia neurones. We postulate that TRPV1 activation plays an inhibitory role in sensory neuronal extension and motility by regulating the disassembly of microtubules. This might have a role in the chronification of pain.
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Affiliation(s)
- C Goswami
- Freie Universität Berlin, Institut für Chemie und Biochemie, Berlin, Germany
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Goswami C, Kumar J, Hucho T. 350 CHARACTERIZATION OF ENDOGENOUS PKC-EPSILON IN F11 CELL, A MODEL SYSTEM FOR STUDYING PAIN SIGNALLING. Eur J Pain 2007. [DOI: 10.1016/j.ejpain.2007.03.365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Goswami C, Hucho T. 347 INDUCTION OF FILOPODIAL STRUCTURES BY OVER-EXPRESSION OF TRPV1. Eur J Pain 2007. [DOI: 10.1016/j.ejpain.2007.03.362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Abstract
Previously, we reported that TRPV1, the vanilloid receptor, interacts with soluble alphabeta-tubulin dimers as well as microtubules via its C-terminal cytoplasmic domain. The interacting region of TRPV1, however, has not been defined. We found that the TRPV1 C-terminus preferably interacts with beta-tubulin and less with alpha-tubulin. Using a systematic deletion approach and biotinylated-peptides we identified two tubulin-binding sites present in TRPV1. These two sequence stretches are highly conserved in all known mammalian TRPV1 orthologues and partially conserved in some of the TRPV1 homologues. As these sequence stretches are not similar to any known tubulin-binding sequences, we conclude that TRPV1 interacts with tubulin and microtubule through two novel tubulin-binding motifs.
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Affiliation(s)
- C Goswami
- Freie Universität Berlin, Institut für Chemie und Biochemie, Berlin, Germany
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Abstract
The transmission of pain signalling involves the cytoskeleton, but mechanistically this is poorly understood. We recently demonstrated that the capsaicin receptor TRPV1, a non-selective cation channel expressed by nociceptors that is capable of detecting multiple pain-producing stimuli, directly interacts with the tubulin cytoskeleton. We hypothesized that the tubulin cytoskeleton is a downstream effector of TRPV1 activation. Here we show that activation of TRPV1 results in the rapid disassembly of microtubules, but not of the actin or neurofilament cytoskeletons. TRPV1 activation mainly affects dynamic microtubules that contain tyrosinated tubulins, whereas stable microtubules are apparently unaffected. The C-terminal fragment of TRPV1 exerts a stabilizing effect on microtubules when over-expressed in F11 cells. These findings suggest that TRPV1 activation may contribute to cytoskeleton remodelling and so influence nociception.
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Affiliation(s)
- C Goswami
- Freie Universität Berlin, Institut für Chemie/Biochemie, Berlin, Germany
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Goswami C, Dreger M, Jahnel R, Bogen O, Gillen C, Hucho F. Identification and characterization of a Ca2+ -sensitive interaction of the vanilloid receptor TRPV1 with tubulin. J Neurochem 2005; 91:1092-103. [PMID: 15569253 DOI: 10.1111/j.1471-4159.2004.02795.x] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The vanilloid receptor TRPV1 plays a well-established functional role in the detection of a range of chemical and thermal noxious stimuli, such as those associated with tissue inflammation and the resulting pain. TRPV1 activation results in membrane depolarization, but may also trigger intracellular Ca2+ -signalling events. In a proteomic screen for proteins associated with the C-terminal sequence of TRPV1, we identified beta-tubulin as a specific TRPV1-interacting protein. We demonstrate that the TRPV1 C-terminal tail is capable of binding tubulin dimers, as well as of binding polymerized microtubules. The interaction is Ca2+ -sensitive, and affects microtubule properties, such as microtubule sensitivity towards low temperatures and nocodazole. Our data thus provide compelling evidence for the interaction of TRPV1 with the cytoskeleton. The Ca2+ -sensitivity of this interaction suggests that the microtubule cytoskeleton at the cell membrane may be a downstream effector of TRPV1 activation.
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Affiliation(s)
- C Goswami
- Freie Universität Berlin, Institute für Chemie-Biochemie, Berlin, Germany
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Boro RC, Goswami C, Thakuria D, Modi MK, Talukdar NC. Molecular and functional characteristics, growth promoting effect and persistence of selected parent isolates and streptomycin resistant derivatives of rice rhizobacteria. Indian J Exp Biol 2004; 42:1186-94. [PMID: 15623229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
Molecular and functional characteristics of seven azospirilla and five phosphorus solubilizing bacteria (PSB) isolates of rice rhizosphere, growth promotion ability of two efficient strains, Azospirillum amazonense A10 (MTCC4716) and Bacillus megaterium P5 (MTCC4714) and their persistence based on streptomycin resistant derivatives (SRD), were determined. SDS-PAGE and isozyme banding patterns of the isolates were used to arbitrarily group the azospirilla into 4 and PSB into 3 clusters and as markers to ascertain their identity. The azospirilla produced 2.0 to 10.5 ppm of IAA like substances and showed nitrogenase activity of 0.02 to 3.55 nmole C2H4/hr/ml of pure culture. PSB isolates produced 7.8 to 15.0 ppm IAA like substances and 20 to 128 ppm soluble P. Induction of resistance to streptomycin resulted in changes of these properties. Co-inoculation of rice with SRD A10 and SRD P5 and their parental strains in separate treatments enhanced grain yield over control by 31 and 12.4%, respectively. Nitrogenase activity of rice roots under SRD co-inoculated treatment was higher (4.16 nmole C2H4/hr/hill) than that-under parental strains co-inoculated treatment (3.76 nmole C2H4/hr/hill). SDS-PAGE profile and population count of the strains confirmed their establishment in rice rhizosphere and persistence over a year after inoculation.
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Affiliation(s)
- R C Boro
- Department of Agricultural Biotechnology, Assam Agricultural University, Jorhat 785 013, India
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Jahnel R, Goswami C, Si H, Dreger M, Gillen C, Hucho F. Expression of the N- and C-termini from the Vanilloid Receptor 1 (VR1) as MBP-fusion proteins for affinity purification and search for interaction partners. J Neurochem 2003. [DOI: 10.1046/j.1471-4159.85.s2.20_3.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Goswami C, Dinshaw KA, Shrivastava SK, Muckaden MA, Sharma V, Advani SH. Hodgkin's disease relapse presenting as Pancoast's syndrome. Indian J Cancer 1996; 33:21-3. [PMID: 9063014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Among the various infrequent causes of Pancoast's syndrome, Hodgkin's disease is one. A 26 year old man was diagnosed as Hodgkin's disease. Five years later the disease relapsed producing Pancoast's syndrome. The importance of precise aetiological diagnosis before treatment of such cases with similar presentation is emphasized.
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Affiliation(s)
- C Goswami
- Dept. Radiation Oncology, Tata Memorial Hospital, Tata Memorial Centre, Parel, Mumbai, India
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