scholarly journals Сlinical signs and pathoanatomical changes in the brain for poisoning of domestic turkeys with diazinon

2018 ◽  
Vol 20 (92) ◽  
pp. 222-228
Author(s):  
R. S. Dankovych ◽  
V. V. Tumanov
Keyword(s):  
Organophosphorus Pesticides ◽  
Histological Study ◽  
Clinical Signs ◽  
Meleagris Gallopavo ◽  
The Body ◽  
Electron Microscopic ◽  
Actual Problem ◽  
Perivascular Edema ◽  
Cholinergic Synapses ◽  
The Masses

For today, the actual problem of veterinary medicine is the poisoning of animals with organophosphorus pesticides, which are used as insecticides and acaricides, fungicides, herbicides, rodenticides, nematocides. One of the highly effective nonspecific organophosphorus insecticides is diazinon, which enters the body causing poisoning of various species of birds. The basis of the toxic action of diazinon is the ability to block the enzyme acetylcholinesterase. As a result, acetylcholine is accumulated in cholinergic synapses, excessive stimulation of the nerves and muscles is noted, and in the future, a violation of the normal passage of nerve impulses develops. Research was carried out of domestic turkeys (Meleagris gallopavo) in which spontaneous poisoning with diazinon was recorded. Detailed study of clinical signs that develop as a result of poisoning. The activity of the acetylcholinesterase of the serum of blood in the experimental birds was determined by the method of Hestrin. The section of birds that were killed was carried out by the method of Shore. Sections of organs were fixed in 10% neutral formalin, 96% ethanol and Carnoua liquid. The histo-cuttings were made by means of a stent microtome, stained with hematoxylin and eosin. The histological study of the preparations and their photographing was performed using a Leica DM-2500 (Switzerland) microscope, a Leica DFC450C camera and the Leica Application Suite Version 4.4 software. For the production of ultrathin sections, as well as for conducting electron microscopy, pieces of organs were fixed in Millonig’s buffer pH 7,36. Half-thin and ultrathin cuts were made on ultramicrotome LKB-2188 Ultrotome NOVA. The specimens were viewed and photographed in a Tesla BS-500 transmissive electron microscope, at an accelerating voltage of 60, 90 kV. In the pathoanatomical study, expressed discirculatory processes in the form of acute congestive hyperemia, stasis, perivascular edema and hemorrhages, as well as necrotic changes in cardiomyces, hepatocytes, nephrocytes and brain neurons. An electron microscopic study also found destruction of synapses in the cerebral cortex, cerebellum and medulla oblongata. When autopsy selected material (feed the masses crop of birds) for chemical-toxicological research. As a result the research the extract of selected content crop of birds by the method of thin-layer chromatography paper manifestation of iodine bismuth quality received positive reaction on the compound diazinon.

scholarly journals Analysis of biochemical and hematological parameters of blood, clinical signs and pathoanatomical changes for spontaneous poisoning of turkeys with diazinon

2018 ◽  
Vol 20 (83) ◽  
pp. 370-375
Author(s):  
V.V. Tumanov
Keyword(s):  
Organophosphorus Pesticides ◽  
Histological Study ◽  
Hematological Parameters ◽  
Clinical Signs ◽  
Meleagris Gallopavo ◽  
The Body ◽  
Actual Problem ◽  
Perivascular Edema ◽  
Crop Content ◽  
Biochemical Examination

For today, the actual problem of veterinary medicine is the diagnosis of animal poisoning with organophosphorus pesticides, which are used as insecticides and acaricides, fungicides, herbicides, rodenticides, nematocides. One of the highly effective nonspecific organophosphorus insecticides is diazinon, falling into the body causing poisoning of various species of birds. The basis of the toxic action of diazinon is the ability to block the enzyme acetylcholinesterase. As a result, acetylcholine is accumulated in cholinergic synapses, excessive stimulation of the nerves and muscles is noted, and in the future, a violation of the normal passage of nerve impulses develops. Complex research was carried out of Domestic Turkeys (Meleagris gallopavo) in which spontaneous poisoning with diazinon was recorded. Biochemical examination of the serum was carried out using the biochemistry analyzer «Cobas Integra 400 plus». The activity of the serum acetylcholinesterase was determined by the Method of Hestrin, 1949. In the stabilized blood, the hemoglobin content was determined by the hemoglobin-cyanide methods, the number of red blood cells and leukocytes was counted in Gorjaev's count chamber and the leukogram - after microscopy of blood smears, painted according to the Romanovsky-Gimza methods. The breeding of birds was carried out using the Shores method. The organs were fixed in 10% neutral formalin, 96% ethanols and Carnoy’s solution. The histological sections were made using a sown and freezing microtome, stained hematoxylin and eosin. The histological study of the preparations and their photographing was performed using microcope Leica DM 2500, and camera Leica DFC 450 C., Application Suite Version 4.4.0. Clinically ill turkeys poisoned by diazinon showed oppression, tremor and paresis of wings. Later, the coordination of movements was disturbed: sick birds fell on their backs, marked swimming movements of the pelvic limbs, cramps and spastic contractions of the limb muscles. From the oral cavity was allocated a rare mucous mass. After acute attacks and spastic contractions of the muscles, muscle weakness developed. In the terminal periods of the disease, there were also spasms of various muscle groups, paralysis, difficulty and frequent breathing accompanied by wheezing, cyanosis of the skin. During the conducted biochemical examination of serum, a marked decrease in the level of acetylcholinesterase, an increase in the level of AST, cholesterol and uric acid was observed. In the pathoanatomical study, expressed discirculatory processes in the form of acute congestive hyperemia, stasis, perivascular edema and hemorrhages, as well as necrotic changes in cardiomyces, hepatocytes, nephrocytes and brain neurons were found. Quality positive reaction on diazinon was received as a result of the bird crop content research by the method of thin-layer chromatography paper manifestation of iodine bismuth.

scholarly journals Діазинон. Основні аспекти біологічної дії, токсикологічні властивості та патоморфологія отруєнь

2017 ◽  
Vol 19 (77) ◽  
pp. 131-136
Author(s):  
V. Tumanov
Keyword(s):  
Spinal Cord ◽  
Structural Changes ◽  
Organophosphorus Pesticides ◽  
Clinical Signs ◽  
Nerve Fibers ◽  
The Body ◽  
Published Data ◽  
Organophosphate Pesticide ◽  
Autonomic Ganglion ◽  
The Impact

The article represents data on chemical properties and main aspects of the biological action of the diazinon - organophosphate pesticide that is widely used as a drug with marked acaricidal and insecticidal properties. Analyzed published data on metabolism, diazinon accumulation in various organs and systems, and ways of removing from the body. The article shows the median lethal dose (LD50) diazinon for various kinds of animals. The special features of the pathogenesis of poisoning, the main mechanism of action of toxic organophosphorus pesticides is the phosphorylation and inhibition of acetylcholinesterase, resulting in a marked accumulation of acetylcholine in the cholinergic synapses, excessive stimulation of nerves and muscles, disruption passage of nerve impulses. The article detailed the clinical signs of acute poisoning by organophosphate compounds. These data indicate that the effects on the body organophosphorus pesticides includes muscarinic effects (sialorrhea and excessive secretion of sweat glands, bronchorrhea, increased motility of the gastrointestinal tract, accompanied by spastic contractions of the intestinal wall, vomiting and gastroenteritis), nicotine action (miofibrillation, rigidity pectoral muscles, paralysis of respiratory muscles with the development of sudden hypoxemia) and central effects (arising from the impact of the central nervous system and are accompanied by violation of its function). The analysis pathmorphology of poisoning of the organophosphate pesticide. These data indicate that structural changes diazinon poisoning is less specific than clinical signs and characterized by: the development of the circulatory disorders (acute congestive hyperemia recorded and hemorrhage), the appearance of dystrophic and necrotic changes parenchymal elements of the brain and spinal cord, liver, kidneys and so on. Also recorded alterations changes ganglion cells and spinal cord autonomic ganglion, proliferation of glial cells, and for subacute and chronic poisoning – disintegration of the myelin and nerve fibers axial cylinder. Described diazinon influence on organs of the immune system and ability to induce endocrine disorders. There are published data on the potential mutagenic, carcinogenic and teratogenic effects of the diazinon. The range of problems researd structural changes by the origin and development of clinical evidence for the effect of different doses diazinon and certain aspects of forensic veterinary diagnostic poisoning mammals and birds of organophosphate pesticides.

Pathophysiological mechanisms of hepatic immune reactivity in prolonged experimental exposure of the body to sodium fluoride

2019 ◽  
pp. 64-72
Author(s):  
А.С. Казицкая ◽  
Т.К. Ядыкина ◽  
М.С. Бугаева ◽  
А.Г. Жукова ◽  
Н.Н. Михайлова ◽  
...  
Keyword(s):  
Sodium Fluoride ◽  
Histological Study ◽  
The Body ◽  
Male Rats ◽  
Free Access ◽  
Immune Reactivity ◽  
Organ Protection ◽  
Pathophysiological Mechanisms ◽  
Subchronic Exposure ◽  
Study Results

В условиях непрерывного воздействия неблагоприятных факторов окружающей и производственной среды на человека особую актуальность приобретает изучение механизмов, поддерживающих гомеостаз организма. Длительное поступление фторидов в организм приводит к формированию хронической фтористой интоксикации, патогенез которой вызывает многочисленные споры и дискуссии. До сих пор недостаточно внимания уделяется изучению висцеральной патологии, обусловленной нарушениями иммунного статуса в условиях воздействия на организм соединений фтора. Практически отсутствуют исследования по изучению иммунной реактивности, определяющей морфофункциональный характер ответной реакции печени на ранних стадиях развития фтористой интоксикации. Цель работы - изучение действий патофизиологических механизмов иммунной реактивности печени при субхроническом действии на организм соединений фтора. Методика. Опыты проведены на 210 лабораторных крысах-самцах массой 180-220 г., разделенных на 2 группы: контрольную (n=80) и группу животных с субхроническим действием фторида натрия (n=130). Экспериментальные животные в течение 12 нед имели свободный доступ к водному раствору фторида натрия (концентрация 10 мг/л, что составляет суточную дозу фтора 1,2 мг/кг массы тела). Для изучения иммунологических и биохимических показателей забирали кровь из хвостовой вены через 1, 3, 6, 9, 12 нед от начала эксперимента. Для оценки состояния гуморального звена иммунитета определяли уровень сывороточных иммуноглобулинов (IgA, IgG, IgM) иммуноферментным анализом с помощью наборов реактивов ЗАО «Вектор-Бест» (Новосибирск). Уровень сывороточных цитокинов: TNF-α, IL-1β, 2, 4, 6, 10 определяли на анализаторе Multiskan EX методом иммуноферментного анализа с использованием наборов «Вектор Бест» (Новосибирск). Подсчет общего количества лейкоцитов произведен классическим способом в камере Горяева, анализ лейкоцитарной формулы - в окрашенных мазках периферической крови. Метаболические изменения оценивали по активности ферментов в ткани печени: щелочной фосфатазы (ЩФ), аланин- и аспартатаминотрансфераз (АЛТ, АСТ), лактатдегидрогеназы (ЛДГ), гаммаглутамилтранспептидазы (γ-ГТ). Активность ферментов определяли унифицированными методами с помощью наборов реактивов ЗАО «Вектор-Бест» (Новосибирск) на фотометре PM-750 (Германия). Гистологические исследования печени осуществляли после декапитации крыс, проводимой под эфирным наркозом. Результаты. Показано, что субхроническое воздействие фторида натрия сопровождается формированием внутриклеточных и внутрисосудистых повреждений печени. Активация медиаторов воспаления и развитие иммунологических нарушений в динамике эксперимента способствуют формированию системной воспалительной реакции, которая приводит к появлению стойких морфологических нарушений в печени и изменению активности ферментов основных метаболических путей. Заключение. Полученные результаты могут быть использованы при разработке и проведении профилактических мероприятий в условиях воздействия на организм высоких концентраций фтора с последовательным применением детоксикационной, иммуномодуляторной и органопротекторной коррекции. Studying mechanisms, which maintain the body homeostasis, is particularly important in the conditions of continuous impact of adverse environmental and manufacturing factors. Long-term exposure to fluorides leads to chronic fluoric intoxication, the pathogenesis of which is a subject of multiple controversy and discussions. Not enough attention is still paid to elucidating the visceral pathology associated with fluorine-induced immune disorders. There are virtually no studies of immune reactions that define the morphofunctional nature of the liver response to early stages of fluoric intoxication. Aim. To study pathophysiological mechanisms of hepatic immune reactivity in subchronic exposure of the body to fluorine compounds. Methods. Experiments were performed on 210 male rats weighing 180-220 g. The animals were divided into two groups: 1) control (n=80) and 2) subchronic exposure to sodium fluoride (n=130). The rats had free access to a 10 mg/l aqueous solution of sodium fluoride (daily dose, 1.2 mg/kg body weight) for 12 weeks. Blood was withdrawn from the caudal vein at 1, 3, 6, 9, and 12 weeks of the experiment for immunological and biochemical tests. Histological study of the liver was performed after decapitation of rats under ether anesthesia. Results. The subchronic exposure to sodium fluoride was associated with intracellular and intravascular damage of the liver. Activation of inflammatory mediators and development of immunological disorders during the experiment contributed to a systemic inflammatory reaction, which resulted in persistent morphological injuries of the liver and changes in enzyme activities in major metabolic pathways. Conclusion. The study results can be used for development and implementation of preventive measures against the effects of high fluorine concentrations, which would include a successive use of detoxification, immunomodulation and organ protection.

Protective Effect of Silybum marianum and Nigella sativa Oil Extracts against Cisplatin Induced Nephrotoxicity in Mice

2018 ◽  
Vol 18 (2) ◽  
pp. 171-175
Author(s):  
Ashraf A. ◽  
Hassan F. ◽  
Batool S. ◽  
Nadeem M. ◽  
Irshad M. ◽  
...  
Keyword(s):  
Body Weight ◽  
Blood Glucose ◽  
Petroleum Ether ◽  
Nigella Sativa ◽  
Histological Study ◽  
The Body ◽  
Cellular Damage ◽  
Elevated Blood ◽  
Silybum Marianum ◽  
Elevated Blood Glucose

The objective of present study was to analyze and compare the nephroprotective effects of petroleum ether extracts of seeds of Nigella sativa and Silybum marianum in Swiss albino mice. Petroleum ether extracts of seeds of Nigella sativa and Silybum marianum were administered (200 mg kg–1) orally for 14 days following one dose of cisplatin injection (16 mg kg–1 i.p.) on 4th day. Cisplatin toxicity was identified in mice by loss of body weight, reduced triglycerides levels, elevated blood glucose, blood urea nitrogen and creatinine levels (P < 0.05). Silybum marianum and Nigella sativa significantly enhanced the body weight (9%) of diabetic rats. Silybum marianum had significantly reduced the elevated blood glucose (–106%), and BUN levels (–9%) as compared to the Nigella sativa administration. Silybum marianum extract also significantly elevated the levels of triglycerides (257%) which were much reduced after the cisplatin injection. Histological study showed that the cisplatin treated group demonstrated the necrosis signs in the glomerulus of Bowman’s capsule, hyalinization and severe cellular damage. The animals administered with extracts showed nearly normal kidney architecture, however, the kidney tissues of Silybum marianum-treated animals showed some improvement with slight signs of cellular damages.

EPITHELIAL HEPATOBLASTOMA ASSOCIATED WITH CONGENITAL HEMIHYPERTROPHY AND CYSTATHIONINURIA: PRESENTATION OF A CASE

PEDIATRICS ◽  
1970 ◽  
Vol 46 (1) ◽  
pp. 66-73 ◽  
Author(s):  
C. F. Geiser ◽  
A. Baez ◽  
A. M. Schindler ◽  
V. E. Shih
Keyword(s):  
Amino Acid ◽  
Histological Study ◽  
The Body ◽  
Skin Fibroblasts ◽  
Congenital Hemihypertrophy ◽  
Urinary Amino

A 13-month-old boy with hepatoblastoma and hemihypertrophy is presented; this is the fifth known case with this association. Histological study showed that hemihypertrophy was related to cellular hyperplasia but not to hypertrophy of individual cells. Karyotypes of leukocytes and of skin fibroblasts from both sides of the body were normal. The association of hemihypertrophy and hepatoblastoma stresses the dysontogenetic origin of this neoplasm and signals the possibility of this tumor in children with asymmetry. Our patient showed cystathioninuria, which was related to the high content of cystathionine in his tumor. The presence of cystathioninuria in 7 of 10 patients with hepatoblastoma so far examined, shows the usefulness of urinary amino acid screening in the diagnosis of this rare childhood neoplasm.

scholarly journals Detectability of the peripheral and axial manifestations of psoriatic arthritis in patients with psoriasis in dermatological practice

2019 ◽  
Vol 13 (4) ◽  
pp. 48-54
Author(s):  
M. N. Chamurlieva ◽  
E. Yu. Loginova ◽  
T. V. Korotaeva
Keyword(s):  
Back Pain ◽  
Psoriatic Arthritis ◽  
Early Diagnosis ◽  
Clinical Signs ◽  
Severity Index ◽  
The Body ◽  
Inflammatory Back Pain ◽  
Patient Complaints ◽  
Asas Criteria ◽  
Mechanical Back Pain

Psoriatic arthritis (PsA) is a heterogeneous disease manifested by peripheral arthritis, dactylitis, spondylitis, and enthesitis. PsA is often undiagnosed by dermatovenerologists because of the difficulty in identifying a variety of clinical signs. The early diagnosis of PsA and the accurate assessment of all its symptoms are necessary for the timely choice of optimal therapy.Objective: to assess the detectability of clinical signs of PsA in patients with psoriasis in dermatological practice.Patients and methods. The investigation enrolled 103 patients (47 men and 56 women) (mean age, 44.0±13.7 years) with psoriasis (its mean duration, 10.7±10.2 years), the average prevalence and severity according to the Body Surface Area (BSA) and the Psoriasis Area and Severity Index (PASI) were 9.3±13.6% and 15.4±12.5 scores, respectively. All the patients completed the Psoriasis Epidemiology Screening Tool (mPEST) and were examined by a dermatovenerologist and a rheumatologist. The diagnosis of PsA was based on the Classification Criteria for Psoriatic Arthritis (CASPAR). The investigators evaluated arthritis, dactylitis, enthesitis, and inflammatory back pain (IBP) according to the rheumatological standards: IBP by the Assessment of SpondyloArthritis International Society (ASAS) criteria, and enthesitis by the Leeds Enthesitis Index (LEI).Results and discussion. Sixty-one (59.2%) of the 103 patients with psoriasis were found to have PsA on the basis of the CASPAR criteria and the rheumatologist's examination. The dermatovenerologist diagnosed arthritis in a significantly smaller number of cases than did the rheumatologist: in 15 (24.6%) and 35 (57.4%) of the 61 patients (p<0.001), respectively. The dermatovenerologist and the rheumatologist demonstrated no significant differences in their clinical evaluation of dactylitis: it was detected in 37 (60.7%) and 40 (65.6%) of the 61 patients, respectively (p=0.32). Based on patient complaints and mPEST findings, the dermatovenerologist recorded pain in the calcaneal region in 32 (52.5%) patients. The rheumatologist identified ulnar, knee, and calcaneus enthesitis in 11 (18%), 8 (13.1%), and 25 (41%) patients, respectively. Based on complaints and mPEST findings, the dermatovenerologist detected back pain in 30 (49.2%) of the 61 patients. The rheumatologist diagnosed IBP in 21 (70%) of these 30 patients and mechanical back pain in 9 (30%). Thus, IBP was noted in 34.4% of PsA patients. Tendonitis was undiagnosed by the dermatovenerologist; the rheumatologist identified wrist tendonitis in 13 (21.3%) of the 61 patients with PsA.Conclusion. Dermatovenerologists frequently underestimate damage to the spine and entheses in patients with psoriasis. The introduction of the ASAS criteria for IBP and methods for assessing enthesitis in dermatological practice can improve the early diagnosis of axial lesion in PsA in patients with psoriasis.

scholarly journals Novel Nanoparticle-Based Cancer Treatment, Effectively Inhibits Lung Metastases and Improves Survival in a Murine Breast Cancer Model

2021 ◽  
Vol 11 ◽  
Author(s):  
Sarah Kraus ◽  
Raz Khandadash ◽  
Raphael Hof ◽  
Abraham Nyska ◽  
Ekaterina Sigalov ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Magnetic Field ◽  
Lung Metastases ◽  
Metastatic Cancer ◽  
Relative Size ◽  
Clinical Signs ◽  
Metastatic Breast ◽  
The Body ◽  
Alternating Magnetic Field ◽  
Therapeutic Modality

Sarah Nanoparticles (SaNPs) are unique multicore iron oxide-based nanoparticles, developed for the treatment of advanced cancer, following standard care, through the selective delivery of thermal energy to malignant cells upon exposure to an alternating magnetic field. For their therapeutic effect, SaNPs need to accumulate in the tumor. Since the potential accumulation and associated toxicity in normal tissues are an important risk consideration, biodistribution and toxicity were assessed in naïve BALB/c mice. Therapeutic efficacy and the effect on survival were investigated in the 4T1 murine model of metastatic breast cancer. Toxicity evaluation at various timepoints did not reveal any abnormal clinical signs, evidence of alterations in organ function, nor histopathologic adverse target organ toxicity, even after a follow up period of 25 weeks, confirming the safety of SaNP use. The biodistribution evaluation, following SaNP administration, indicated that SaNPs accumulate mainly in the liver and spleen. A comprehensive pharmacokinetics evaluation, demonstrated that the total percentage of SaNPs that accumulated in the blood and vital organs was ~78%, 46%, and 36% after 4, 13, and 25 weeks, respectively, suggesting a time-dependent clearance from the body. Efficacy studies in mice bearing 4T1 metastatic tumors revealed a 49.6% and 70% reduction in the number of lung metastases and their relative size, respectively, in treated vs. control mice, accompanied by a decrease in tumor cell viability in response to treatment. Moreover, SaNP treatment followed by alternating magnetic field exposure significantly improved the survival rate of treated mice compared to the controls. The median survival time was 29 ± 3.8 days in the treated group vs. 21.6 ± 4.9 days in the control, p-value 0.029. These assessments open new avenues for generating SaNPs and alternating magnetic field application as a potential novel therapeutic modality for metastatic cancer patients.

scholarly journals Diagnostic significance of clinical and para-clinical signs of community-acquired pneumonia in children

2020 ◽  
Vol 24 (2) ◽  
pp. 244-249
Author(s):  
V.Yu. Pasik
Keyword(s):  
Young Children ◽  
Sensitivity And Specificity ◽  
Clinical Symptoms ◽  
Clinical Signs ◽  
The Body ◽  
Diagnostic Methods ◽  
Statistical Hypothesis ◽  
Diagnostic Significance ◽  
Operational Characteristics ◽  
Gallbladder Dyskinesia

Annotation. Respiratory diseases are relevant in pediatric practice, which is associated with its widespread and frequent complications, especially in young children. The aim of the study was to assess the diagnostic value of clinical symptoms, laboratory and ultra-sonographic parameters in pneumonia in children of the first 3 years of life. A retrospective study of medical records of 218 children who were hospitalized in the department for young children diagnosed with pneumonia for the period from 2016 to 2018. The average age of children was 11.67±9.97 months and it was within the range from 1 month to 3 years. The ration of boys and girls was practically identical (51.8% and 48.2% accordingly). The first group included children aged under one year (the average age is 4.57±0.84 months; n=88). The second group included children aged from 1 to 3 years (the average age is 18.2±4.25 months; n=130). To characterize the information content of clinical and laboratory symptoms the study has used objective parameters defined as the operational characteristics of tests. The most important operational characteristics of diagnostic methods included: sensitivity (Se, sensitivity) and specificity (Sp, specificity). To check the statistical hypothesis on differences of absolute and relative frequencies, fractions, and ratios in two independent samples, the criteria of хі-square (χ2) was used. While detailing an anamnesis, the disease was more often related to untimely treatment and outpatient care. Various data were obtained on the absolute and relative risk, as well as the sensitivity and specificity of the localization of pneumonia depending on age. Therefore, the incidence of bilateral pneumonia was considered an indicator of risk. On admission to hospital, the body temperature of patients was 38.2±0.66°С. Most of the complaints were on the unproductive or productive cough. Besides, in some cases, shortness of breath and runny nose were mentioned. Thus, in young children with pneumonia, a diagnostically significant clinical symptom is a bilateral lung impression (82.6%), compared with right-handed (15.1%) and left-handed (2.3%), which is significantly more common in children under 1-th year of life compared with patients 1–3 years; laboratory features are probably higher levels of liver-specific enzymes – ALT and AST in children under 1 year; ultrasonographic indicators associated with the presence of pneumonia in young children include increased liver size, gallbladder deformity, the presence of sediment in the gallbladder, dyskinesia of the biliary tract, thickening of the gallbladder wall; children under 1 year of age have a risk of liver enlargement and biliary dyskinesia.

scholarly journals Scanning electron microscopic observation of the infection process of a Metarhizium strain Ma6 highly pathogenic to Phyllotreta striolata

2018 ◽  
Author(s):  
Jianyu Li ◽  
Mengzhu Shi ◽  
Yuechao He ◽  
Jianwei Fu ◽  
Lizhen Zheng
Keyword(s):  
Body Surface ◽  
Electron Microscopic Observation ◽  
Infection Process ◽  
The Body ◽  
Body Parts ◽  
Pathogenic Microorganisms ◽  
Electron Microscopic ◽  
Highly Pathogenic ◽  
Phyllotreta Striolata ◽  
Scanning Electron

Background. Phyllotreta striolata is a worldwide pest that harms cruciferous vegetables. The use of pathogenic microorganisms to control pests is an important means of biological control. Using pathogenic microorganisms to prevent and control P. striolata has rarely been reported. Methods. In this study, the infection process of a Metarhizium strain highly pathogenic to P. striolata was observed by stereomicroscopyand scanning electron microscopy (SEM). Results.The results showed that the attachment of Metarhizium strain Ma6 to the body surface varied; the conidia distribution was greatest in the tibia of the posterior leg with thick bristles and in the intersegmental abdominal membrane, and the spore distribution occurred least in the smooth and hard portions of the insect’s body. At the start of the infection, Metarhizium strain Ma6 generally grew from the body parts with gaps or connecting spaces such as mouthparts and the thoracic leg base and joints, then the spores germinated with germ tubes and penetration peg, and the penetration peg penetrated the body surface. Ten days after inoculation, the mycelia divided into conidia, and many mycelia and spores covered the entire adult insect’s body. Discussion. Spore germination occurred on the 5th day after inoculation, and many hyphae and spores covered the entire adult insect body within 10 days after inoculation. And the invasion into tissue gaps from the weaker areas is more efficient than intruding from the body hard surface. This may be the reason for the Metarhizium strain Ma6’s high virulence. This study preliminarily clarified the infection ability and invasion approach of a Metarhizium strain against P. striolata, providing evidence for evaluating the strain’s insecticidal effect and application prospect.

scholarly journals In an Adult Horse With Severe Asthma (Previously Recurrent Airway Obstruction) Does Using Inhaled Corticosteroids Result in an Equal Improvement in Clinical Signs When Compared to Systemic Corticosteroids?

2018 ◽  
Vol 3 (2) ◽  
Author(s):  
Natasha A Jocelyn
Keyword(s):  
Open Access ◽  
Airway Obstruction ◽  
Severe Asthma ◽  
Inhaled Corticosteroids ◽  
Clinical Signs ◽  
The Body ◽  
Recurrent Airway Obstruction ◽  
Bottom Line ◽  
Systemic Corticosteroids ◽  
Equine Asthma

<strong>PICO question</strong><br /><p>In an adult horse with severe asthma (previously recurrent airway obstruction (RAO)) does using inhaled corticosteroids result in an equal improvement in clinical signs when compared to systemic corticosteroids?</p><strong>Clinical bottom line</strong><br /><p>The level of confidence in the outcomes from the body of evidence in the 4 papers identified is high. This suggests inhaled corticosteroids (fluticasone and beclomethasone) when used at an appropriate dose can have equivalent effects on severe equine asthma as systemic intravenous dexamethasone. Inhaled corticosteroids can take longer to have the desired effects. </p><br /> <img src="https://www.veterinaryevidence.org/rcvskmod/icons/oa-icon.jpg" alt="Open Access" /> <img src="https://www.veterinaryevidence.org/rcvskmod/icons/pr-icon.jpg" alt="Peer Reviewed" />

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