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https://www.readbyqxmd.com/read/28725395/reduced-aboveground-tree-growth-associated-with-higher-arbuscular-mycorrhizal-fungal-diversity-in-tropical-forest-restoration
#1
Ellen K Holste, Karen D Holl, Rakan A Zahawi, Richard K Kobe
Establishing diverse mycorrhizal fungal communities is considered important for forest recovery, yet mycorrhizae may have complex effects on tree growth depending on the composition of fungal species present. In an effort to understand the role of mycorrhizal fungi community in forest restoration in southern Costa Rica, we sampled the arbuscular mycorrhizal fungal (AMF) community across eight sites that were planted with the same species (Inga edulis, Erythrina poeppigiana, Terminalia amazonia, and Vochysia guatemalensis) but varied twofold to fourfold in overall tree growth rates...
October 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/28723308/percutaneous-trans-tracheal-endoscopic-approach-a-novel-technique-for-the-excision-of-benign-lesions-of-thoracic-trachea
#2
Suresh C Sharma, K Devaraja, Arvind Kairo, Rakesh Kumar
INTRODUCTION: Currently, neoplasms of the trachea and lower airway demand open transcervical approach with or without thoracotomy. We describe here a novel, minimally invasive approach for an intraluminal lesion of the thoracic trachea, called percutaneous trans-tracheal endoscopic approach (PTEA). Apart from obvious advantages over potentially morbid open procedures, this technique has certain peculiar benefits over rigid or flexible bronchoscopic approach. MATERIALS AND METHODS: A 43-year-old male patient had glomus tumor of thoracic trachea...
July 19, 2017: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
https://www.readbyqxmd.com/read/28718507/gene-expression-analyses-reveal-metabolic-specifications-in-acute-o2-sensing-chemoreceptor-cells
#3
Lin Gao, Victoria Bonilla-Henao, Paula García-Flores, Ignacio Arias-Mayenco, Patricia Ortega-Sáenz, José López-Barneo
Acute O2 sensing is a fundamental property of cells in the peripheral chemoreceptors, e.g. glomus cells in the carotid body (CB) and chromaffin cells in the adrenal medulla (AM), and is necessary for adaptation to hypoxia. These cells contain O2 -sensitive ion channels, which mediate membrane depolarization and transmitter release upon exposure to hypoxia. However, the mechanisms underlying the detection of changes in O2 tension by cells are still poorly understood. Recently, we suggested that CB glomus cells have specific metabolic features that favour the accumulation of reduced quinone and the production of mitochondrial NADH and reactive oxygen species during hypoxia...
July 17, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28716413/belowground-microbes-mitigate-plant-plant-competition
#4
Márcia Bacelar Fonseca, Teresa Dias, Maria Manuela Carolino, Marcel Giovanni Costa França, Cristina Cruz
Dimorphandra wilsonii, a Cerrado endemic Fabaceae tree, is threatened by land-use changes. The few remaining individuals occur in areas dominated by alien grasses like Urochloa decumbens. We tested the impact of nitrogen (N) availability and symbionts' presence on mitigating the effects of competition from U. decumbens. Dimorphandra wilsonii seedlings were 50-week pot-cultivated under limiting (3mM) or non-limiting (10mM) N, with or without U. decumbens, and inoculated or not with a N-fixer (Bradyrhizobium sp...
September 2017: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/28698815/glomangioma-of-the-kidney-a-rare-case-of-glomus-tumor-and-review-of-the-literature
#5
Ammar Almaghrabi, Nizar Almaghrabi, Haneen Al-Maghrabi
BACKGROUND: Glomus tumors are rare mesenchymal tumors originating from glomus bodies in the skin. Glomus tumors of the kidney are rare tumors and only a few cases have been reported in the medical literature. An extensive search revealed a very limited number of primary renal glomus tumors. Although most of these cases were benign in nature, including a case with uncertain diagnosis of malignant potential, two were malignant. CASE REPORT: We present a unique case of a 57-year-old male patient with an incidentally discovered 2 cm left renal mass...
2017: Case Reports in Pathology
https://www.readbyqxmd.com/read/28697655/functional-ulnar-nerve-paraganglioma-first-documented-occurrence-in-the-extremity-with-hitherto-undescribed-associated-extensive-glomus-cell-hyperplasia-and-tumorlet-formation
#6
Louis Tsun Cheung Chow, Michael Ho Ming Chan, Simon Kwok Chuen Wong
Extra-adrenal paraganglioma has never been described in the extremities. A 34-year-old woman complained of an enlarging mass in the right forearm for 18 months. Imaging showed a circumscribed vascular tumor attached to the ulnar nerve; biopsy revealed features of paraganglioma. The resected tumor consisted of zellballen pattern of chief cells staining positively for chromogranin with surrounding S100-positive sustentacular cells. The chief cells contained many neurosecretory granules and mitochondria, whereas the sustentacular cells contained a large amount of rough endoplasmic reticulum and some microfilaments...
July 1, 2017: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28690755/an-unusual-case-of-simultaneous-left-glomus-vagale-jugulare-and-tympanicum-tumor
#7
Salah Bellasri, Mounir Hmidi
No abstract text is available yet for this article.
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28685005/endovascular-approach-to-glomus-jugulare-tumors
#8
Damian Kocur, Wojciech Ślusarczyk, Nikodem Przybyłko, Mariusz Hofman, Tomasz Jamróz, Krzysztof Suszyński, Jan Baron, Stanisław Kwiek
BACKGROUND: Paragangliomas are benign neuroendocrine tumors derived from the glomus cells of the vegetative nervous system. Typically, they are located in the region of the jugular bulb and middle ear. The optimal management is controversial and can include surgical excision, stereotactic radiosurgery and embolization. CASE REPORT: We report the endovascular approach to three patients harboring glomus jugulare paragangliomas. In all cases incomplete occlusion of the lesions was achieved and recanalization in the follow-up period was revealed...
2017: Polish Journal of Radiology
https://www.readbyqxmd.com/read/28683898/color-doppler-ultrasound-study-of-glomuvenous-malformations-with-its-clinical-and-histologic-correlations
#9
X Wortsman, F Millard, L Aranibar
Glomuvenous malformations are hamartomatous lesions characterized by the presence of glomus cells in the vascular smooth muscle. We present the clinical and color Doppler ultrasound features of a series of 13 cases of histologically confirmed glomuvenous malformations. In all cases, the ultrasound study revealed moderately delimited superficial dermal and hypodermal pseudonodular structures of mixed echogenicity, with hypoechoic and heterogeneous areas and anechoic, pseudocystic tubular and lacunar zones. Arterial and venous vessels, mainly with a low flow (≤ 15cm/s) were observed in 85% of patients, but no arteriovenous shunts were present...
July 3, 2017: Actas Dermo-sifiliográficas
https://www.readbyqxmd.com/read/28680217/glomus-tumor-of-the-larynx-a-rare-synchronous-paraganglioma-in-a-patient-with-bilateral-carotid-body-tumor-detected-on-68-ga-dotanoc-pet-ct
#10
Sarthak Tripathy, Anirban Mukherjee, Chirom A Singh, Bhinyaram Jat, Chandrasekhar Bal, Shamim Ahmed Shamim
Paragangliomas are neoplasms arising from extra-adrenal chromaffin tissue. They frequently cause symptoms by overproduction of catecholamines with known predilection to multicentricity. We describe the case of a patient with bilateral carotid body tumor who underwent a baseline 68 Gallium labeled [1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid]-1-NaI3-Octreotide.
July 2017: Indian Journal of Nuclear Medicine: IJNM: the Official Journal of the Society of Nuclear Medicine, India
https://www.readbyqxmd.com/read/28680204/role-of-99m-tc-mdp-bone-scan-in-delineation-of-ischaemic-zone-in-cases-of-severe-frostbite
#11
Arun Ravi John, Anurag Jain, Braj Kishore, Aniruddha G Pandit
Frostbite or cold burn is the medical condition in which localized damage is caused to exposed skin and subcutaneous tissue due to freezing. Frostbite most likely involves body parts farthest from the heart and those with large exposed areas. At or below 0 °C (32 °F), blood vessels close to the skin start to constrict, and blood is shunted away from the extremities via the physiological feedback action of glomus bodies. This peripheral vasoconstriction helps to conserve core body temperature. In extreme cold, or when certain parts of the body are exposed to cold conditions for long periods, this protective mechanism can reduce blood flow in some areas of the body to dangerously low levels...
July 2017: Indian Journal of Nuclear Medicine: IJNM: the Official Journal of the Society of Nuclear Medicine, India
https://www.readbyqxmd.com/read/28658864/bilateral-solitary-glomus-tumour-of-thumb-a-case-report
#12
Vinay Mathew Joseph, Venkateshwar Reddy Maryada, Gurava Reddy Venkata, Praharsha Mulpur, Muralidhar Sagi
Glomus tumours are benign neoplastic lesions of glomus body, a thermoregulatory apparatus of cutaneous microvasculature. These tumours can arise at any location of the body but most commonly seen in subungual region of fingers. Bilateral solitary glomus tumour of hand is a rare entity. We report a case of 54-year-old female who presented with complaints of pain in the right thumb since three years and left thumb pain since 20 years. Clinical examination revealed acute tenderness of both the thumbs. Love's pin test and Hildreth's test were positive...
May 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28658787/gastric-glomus-tumour-misdiagnosed-as-gastric-carcinoid-an-unfamiliar-entity-with-aids-to-diagnosis-and-review-of-literature
#13
Tanush Vig, Mandeep Singh Bindra, Ramani Manoj Kumar, Suceena Alexander
Glomus tumour (GT) is a rare mesenchymal tumour of the stomach with Gastrointestinal Stromal Tumour (GIST), leiomyoma and schwannoma being far more common and comprising more than 90% of all gastric mesenchymal tumours. As glomus bodies are located in the peripheral parts of the human body, these tumours are peripherally located, classically the subungual region, hands, feet and trunk. While being evaluated for renal problems, a middle aged lady was incidentally found to have a gastric tumour. This was submucosal in location and was excised by a wedge resection and reported elsewhere as carcinoid tumour...
May 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28656356/glomangiomatosis-a-case-report
#14
Valerie A Fitzhugh, Kathleen S Beebe, Cornelia Wenokor, Marcia Blacksin
Glomangiomatosis is a benign vascular variant of a glomus tumor. The lesion represents only 5% of glomus tumors with unusual or atypical features and even fewer glomus tumors with typical features. The lesions are most commonly located in the distal extremities and are multiple, deep, extensive, and often pain producing. They develop from small arteriovenous anastamoses and are most often identified in young adults. The lesions may recur. We present a case of a 33-year-old male who presented clinically with multiple slowly enlarging masses of the leg over a 5-year period, of which one caused significant pain...
June 27, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28650755/glomus-tumor-of-the-toe
#15
Robert L B Sprinkle, Omar P Sangueza, Gregory A Schwartz
A glomus tumor is an uncommon, predominantly benign, neoplastic lesion that primarily involves a thermoregulatory microvascular apparatus, the glomus body. Although these lesions can occur anywhere in the body, the subungual tissue of the hand represents the most common presentation site. Glomus tumors are not often encountered in the foot. Symptoms traditionally include the classic triad of pain, pressure, and cold sensitivity. This case report describes a variant location for a glomus tumor in the subcuticular tissue adjacent to the medial middle phalanx of the second toe...
May 2017: Journal of the American Podiatric Medical Association
https://www.readbyqxmd.com/read/28649733/composition-of-the-root-mycorrhizal-community-associated-with-coffea-arabica-in-fifa-mountains-jazan-region-saudi-arabia
#16
Mosbah Mahdhi, Taieb Tounekti, Turki Ali Al-Turki, Habib Khemira
Arbuscular mycorrhizal fungi (AMF) constitute a key functional group of soil biota that can greatly contribute to crop productivity and ecosystem sustainability. They improve nutrient uptake and enhance the ability of plants to cope with abiotic stresses. The presence of AMF in coffee (Coffea arabica L.) plant roots have been reported in several locations but not in Saudi Arabia despite the fact that coffee has been in cultivation here since ancient times. The objective of the present study was to investigate the diversity of AMF communities colonizing the roots of coffee trees growing in two sites of Fifa Mountains (south-west Saudi Arabia): site 1 at 700 m altitude and site 2 at 1400 m...
June 26, 2017: Journal of Basic Microbiology
https://www.readbyqxmd.com/read/28642762/arbuscular-mycorrhiza-augments-arsenic-tolerance-in-wheat-triticum-aestivum-l-by-strengthening-antioxidant-defense-system-and-thiol-metabolism
#17
Surbhi Sharma, Garima Anand, Neeraja Singh, Rupam Kapoor
Arbuscular mycorrhiza (AM) can help plants to tolerate arsenic (As) toxicity. However, plant responses are found to vary with the host plant and the AM fungal species. The present study compares the efficacy of two AM fungi Rhizoglomus intraradices (M1) and Glomus etunicatum (M2) in amelioration of As stress in wheat (Triticum aestivum L. var. HD-2967). Mycorrhizal (M) and non-mycorrhizal (NM) wheat plants were subjected to four levels of As (0, 25, 50, and 100 mg As kg(-1) soil). Although As additions had variable effects on the percentage of root colonized by the two fungal inoculants, each mycobiont conferred benefits to the host plant...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28638391/glomus-mosseae-inoculation-improves-the-root-system-architecture-photosynthetic-efficiency-and-flavonoids-accumulation-of-liquorice-under-nutrient-stress
#18
Meilan Chen, Guang Yang, Ye Sheng, Pengying Li, Hongyan Qiu, Xiuteng Zhou, Luqi Huang, Zhi Chao
The poor quality and low productivity of cultivated liquorice (Glycyrrhiza uralensis) continues to put pressure on wild plant populations. As arbuscular mycorrhizal fungi are known to support plant growth and in some cases even to enhance the accumulation of valuable molecules in the plant, the effect of Glomus mosseae on the growth and active ingredient contents was evaluated in liquorice plants grown under nutrient deficiency. We created a nutrient-deficient environment by mixing paddy soil, washed river sand, and pumice at a ratio of 1:5:1...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28633794/glomus-tumor-in-the-tarsal-tunnel-a-case-report
#19
Azusa Yoneda, Kazuya Sugimoto, Naoki Tsukada, Kensuke Okamura, Shinji Isomoto, Norihiro Samoto, Yasuhito Tanaka
Glomus tumors are painful benign neoplasms. They commonly present in the hand and are mostly solitary lesions. We report a rare case of multiple glomus tumors in the lower leg. Moreover, 1 of the tumors was in the tarsal tunnel. Resection of the tumors resulted in the early diagnosis of glomus tumors and complete symptom relief. Because of its rarity, diagnosing an extradigital glomus tumor is difficult. Recognition of glomus tumors allows for an early diagnosis and resection, and preoperative magnetic resonance imaging helps in the detection of multiple lesions...
July 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28632567/transducing-like-enhancer-of-split-1-a-potential-immunohistochemical-marker-for-glomus-tumor
#20
Nazan Bozdogan, Gulay B Dilek, Emine Benzer, Mujde Karadeniz, Onder Bozdogan
Glomus tumors (GTs) are rare, perivascular soft tissue tumors. Although GTs are usually found in the subcutaneous tissue, they may be detected in extracutaneous sites and mucosal areas. Transducing-like enhancer of split 1 (TLE1) is a highly useful immunohistochemical marker, which basically helps in differential diagnosis of synovial sarcoma. Based on a coincidental detection of TLE1 in one GT case, we studied 26 additional GT cases to establish the importance and distribution of TLE1 in GTs. Of 24 subcutaneous GTs, 22 (91...
July 2017: American Journal of Dermatopathology
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