9 results on '"Chakravarthi KK"'
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2. Anatomical and Radiological Findings of Abnormal Calcified Structures within and around the Foramen Transversarium and Its Clinical Implications.
- Author
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Chakravarthi KK, Nelluri V, Reghunadhan D, and Sugavasi R
- Subjects
- Humans, Male, Female, Adult, Middle Aged, Calcinosis diagnostic imaging, Calcinosis pathology, Aged, Neck Pain diagnostic imaging, Neck Pain etiology, Ossification, Heterotopic diagnostic imaging, Ossification, Heterotopic pathology, Radiography, Cervical Vertebrae diagnostic imaging
- Abstract
Background: The foramen transversarium is a vital anatomical structure found in the cervical vertebrae of the spine. Typically, it serves as a passageway for important neurovascular structures, including the vertebral artery and vein, as well as the vertebral nerve. However, abnormal calcification or ossification of soft tissues in and around this area can lead to various clinical implications. Understanding the presence and implications of abnormal ossified structures in and around the foramen transversarium is crucial for clinicians involved in the diagnosis and management of cervical spine disorders., Aims: Accordingly, this present study was designed to evaluate the abnormal ossified structures anatomically and radiologically within and around the foramen transversarium., Materials and Methods: This study was conducted on 182 (26 sets of cervical vertebrae) dried human cervical vertebrae obtained from the respective departments of anatomy and on 190 (95 males and 95 females) adult patients who visited the radiology department for neck-related problems such as stiff neck, neck/shoulder pain, dizziness, vertigo, imbalance, visual disturbances, and cognitive impairment., Results: Among 182 examined cervical vertebrae, unilateral complete accessory foramen transversarium was found in 23 vertebrae (12.63%), bilateral complete in 19 (10.44%), bilateral incomplete in 6 (3.29%), unilateral complete double in 4 (2.19%), and unilateral complete absence of foramen transversarium in 3 (1.64%). Stenosis due to aberrant osteophytes was noted in 9 vertebrae (4.9%). Out of 190 patients, three males presented with cervical kyphosis, severe spinal canal stenosis, and spinal cord compression due to ossification of the posterior longitudinal ligament and osteophyte complexes at C3-C6, with the most significant compression at C5-C6., Conclusion: A thorough understanding of abnormal ossifications in and around the foramen transversarium is crucial for the management of cervical spine disorders; imaging modalities such as X-ray, computed tomography, and magnetic resonance imaging are crucial for recognizing and intervening in these cases, which is essential to prevent adverse neurological outcomes associated with vertebral artery involvement., (Copyright © 2024 Copyright: © 2024 Annals of African Medicine.)
- Published
- 2024
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3. Anatomical and Developmental Abnormalities of Ureters and Renal Pelvis Existing with Accessory Renal Arteries: Cadaveric Study.
- Author
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Chakravarthi KK and Reghunadhan D
- Subjects
- Humans, Female, Male, Adult, Middle Aged, Prevalence, Kidney abnormalities, Kidney blood supply, Aged, Dissection, Hydronephrosis, Cadaver, Renal Artery abnormalities, Ureter abnormalities, Kidney Pelvis abnormalities, Kidney Pelvis blood supply
- Abstract
Background: Anatomical and developmental variations of ureters and renal pelvis have been observed frequently during routine human cadaveric dissection and surgical practice; however, their coexistence with accessory or aberrant renal arteries is exceptionally rare. Accordingly, this study was designed to evaluate the prevalence of anatomical and developmental abnormalities of ureters and renal pelvis existing with accessory renal arteries in human cadavers., Materials and Methods: This study was carried out on 50 human cadavers including dissected specimens (25 males and 25 females) the kidneys, renal pelvis, and ureters along with their arteries were exposed and the anomalous abnormalities of the renal pelvis and ureters existing with accessory renal arteries were observed. Photographs of the anomalous and developmental variations were taken for proper documentation., Results: Among the 50 cadavers studied, unilateral double ureters were found in 5 cadavers (10%), rare bilateral "S-"shaped loop of ureter with quadruple uretic constrictors in the abdominal segment of the ureter was observed in one female cadaver (2%), accessory or aberrant renal arteries were found in 15 cadavers (30%), hydronephrosis involving the renal pelvis and ureters was observed in 9 cadavers (18%). Interestingly, this prevalence was higher among males (28%) compared to females (8%). Moreover, the occurrence of bilateral hydronephrosis of the kidneys, renal pelvis, and ureters was identified in a single male cadaver, representing 2% of the sample. Notably, the prevalence of double ureter, hydronephrosis accompanied by congenital double and triple accessory renal arteries was documented in nine cadavers, accounting for 18% of the cohort., Conclusion: Anatomical and developmental variations of the ureters, renal pelvis, and renal vasculature, as well as their relationships to surrounding structures, hold clinical significance due to their impact on various surgical procedures, including kidney transplantation, abdominal aorta reconstruction, interventional radiology, and urologic operations. Therefore, identifying these potential developmental variations is essential for effective surgical management to preserve renal function and ensure optimal patient outcomes., (Copyright © 2024 Copyright: © 2024 Annals of African Medicine.)
- Published
- 2024
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4. Congenital Rare Abnormal Shapes of Lungs in Relation to Abnormal Lobes and Fissures and Its Clinical Implications.
- Author
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Chakravarthi KK, Sarvepalli A, Siddegowda SK, and Nelluri V
- Subjects
- Humans, Female, Male, Middle Aged, Adult, Prevalence, Aged, Lung abnormalities, Lung diagnostic imaging, Lung pathology, Cadaver
- Abstract
Background: Detailed anatomical knowledge of congenital abnormalities of the lungs is essential for proper evaluation and treatment of respiratory diseases, identification of bronchopulmonary segments during lobectomies and surgical resection, and identification and interpretation of their variable radiological imaging., Aim: Accordingly, the aim of this study was designed to evaluate the prevalence of congenital abnormal shapes of lungs in relation to abnormal lobes and fissures., Materials and Methods: This study was carried out on 270 isolated lung specimens (right lungs - 135 and left lungs - 135) from 135 formalin-embalmed middle-aged human cadavers irrespective of gender., Results: Out of 270 lung specimens following congenital abnormalities were reported - (1) three lungs (1.1%) had uunusual different abnormal shapes, such as typical snail shell-shaped right lung with single abnormal circular fissure, bearded axe-shaped left lung with huge cardiac notch, and single-lobed classical pointed hat-shaped right lung, (2) one right lung (0.37%) and 9 left lungs (6.67%) showed complete absence of fissures, (3) among 9 single-lobed left lungs, one had split apex separated by a left subclavian groove with the absence of lingula and cardiac notch, (4) cardiac notch and ligula were noted absently in 3 left lungs (2.36%), and (5) one right lung (0.37%) showed five lobes with complete one oblique and three incomplete horizontal fissures., Conclusion: To the best of our knowledge, such abnormalities of the lungs have not been cited in the recent medical literature. Awareness of these abnormalities is necessary to avoid complications during various radiodiagnostic procedures or cardiothoracic surgeries., (Copyright © 2024 Copyright: © 2024 Annals of African Medicine.)
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- 2024
- Full Text
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5. Accessory heads of biceps brachii muscle its embryogenesis and clinical implications: Cadaveric study.
- Author
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Chakravarthi KK, Sarvepalli A, Siddegowda SK, and Nelluri V
- Subjects
- Female, Humans, Male, Cadaver, Embryonic Development, Arm anatomy & histology, Muscle, Skeletal abnormalities, Muscle, Skeletal anatomy & histology
- Abstract
Background: Biceps brachii is an elongated two-headed fusiform muscle of the anterior compartment of the arm which crosses the shoulder as well as the elbow joint. It assists in flexion of the shoulder joint and elbow joint and powerful supinator of the forearm. It also assists in the abduction of the shoulder joint. Accessory heads of biceps brachii muscle not only give additional strength to the joints, at the same time, they may also simulate soft-tissue tumors that can result in neurovascular compression., Aims and Objectives: Accordingly, the aim of this study was designed to evaluate the prevalence of accessory heads of biceps brachii muscle in human cadavers., Materials and Methods: This study was conducted on 107 formalin embalmed human cadavers (male 62 and 45 female), and dissections were performed in accordance with the institutional ethical standards and the Indian Anatomy Act., Results: Out of 107 cadavers, three-headed biceps brachii was noted in 18 cadavers (16.82%) associated with the unusual course of musculocutaneous nerve. Rare and unusual unilateral five-headed biceps brachii was noted in one male cadaver (0.93%). All accessory heads noted in this study were supplied by the separate branches of musculocutaneous nerve except the humeral head of five-headed biceps, which was supplied by the radial nerve., Conclusion: Awareness of these anatomical variations, knowledge is necessary for radiologists, anesthetists, physiotherapists, and orthopedic surgeons to avoid complications during various radiodiagnostic procedures or surgeries of flexor deformities of the upper arm and forearm., Competing Interests: None
- Published
- 2023
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6. Anatomical variations of brachial artery - its morphology, embryogenesis and clinical implications.
- Author
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Chakravarthi KK, Ks S, Venumadhav N, Sharma A, and Kumar N
- Abstract
Background: Accurate knowledge of variation pattern of the major arteries of upper limb is of considerable practical importance in the conduct of reparative surgery in the arm, forearm and hand however brachial artery and its terminal branches variations are less common., Aim: Accordingly the present study was designed to evaluate the anatomical variations of the brachial artery and its morphology, embryogenesis and clinical implications., Materials and Methods: In an anatomical study 140 upper limb specimens of 70 cadavers (35 males and 35 females) were used and anatomical variations of the brachial artery have been documented., Results: Accessory brachial artery was noted in eight female cadavers (11.43%). Out of eight cadavers in three cadavers (4.29%) an unusual bilateral accessory brachial artery arising from the axillary artery and it is continuing in the forearm as superficial accessory ulnar artery was noted. Rare unusual variant unilateral accessory brachial artery and its reunion with the main brachial artery in the cubital fossa and its variable course in relation to the musculocutaneous nerve and median nerve were also noted in five cadavers (7.14%)., Conclusion: As per our knowledge such anatomical variations of brachial artery and its terminal branches with their relation to the surrounding structures are not reported in the modern medical literature. An awareness of such a presence is valuable for the surgeons and radiologists in evaluation of angiographic images, vascular and re-constructive surgery or appropriate treatment for compressive neuropathies.
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- 2014
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7. Unilateral multiple variations of renal, phrenic, suprarenal, inferior mesenteric and gonadal arteries.
- Author
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Chakravarthi KK
- Abstract
Knowledge of the branching pattern of the abdominal aorta is clinically important for any abdominal surgeon operating on parts of the gut or neighboring structures. Variations of these vessels may influences urological, renal transplantation and laparoscopic surgeries. We present an unreported case of multiple variations of branching pattern of abdominal aorta. It includes double renal arteries for left kidney, a common trunk with right and left phrenic, right and left superior suprarenal and left middle supra renal arteries, and a common trunk originate 2.5 cm above the bifurcation of abdominal aorta gave off inferior mesenteric, accessory renal artery to the left kidney and left testicular arteries in the middle-aged normal male cadaver. The embryogenesis of such multiple variations of branches of abdominal aorta is not clear, but the anatomic consequences may have important clinical implications. Knowledge of these variations is important for urologists, radiologists and surgeons in general.
- Published
- 2014
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8. Enhancement of Hippocampal CA3 Neuronal Dendritic Arborization by Glycyrrhiza glabra root extract Treatment in Wistar Albino Rats.
- Author
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Chakravarthi KK and Avadhani R
- Abstract
Background: In the traditional system of medicine, the roots and rhizomes of Glycyrrhiza glabra (Gg) (family: Leguminosae) have been in clinical use for centuries., Aim: In the present study, we investigated the role of aqueous extract of root of Gg treatment on the dendritic morphology of hippocampal Cornu Ammonis area three (CA3) neurons, one of the regions concerned with learning and memory, in 1- month- old male Wistar albino rats., Materials and Methods: The aqueous extract of root of Gg was administered orally in four doses (75, 150, 225 and 300 mg/kg) for 4 weeks. After the treatment period, all experimental animals were subjected to spatial learning (Morris water maze, Hebb-William's maze and elevated plus maze) tests. At the end of the spatial memory tests, the rats were deeply anesthetized with Pentobarbitone and killed their brains were removed rapidly and fixed in rapid Golgi fixative. Hippocampal CA3 neurons were traced using camera lucida, and dendritic arborization and intersections were quantified. These data were compared to those of age-matched control rats., Results: The aqueous root extract of Gg in the dose of 150 and 225 mg/kg/p.o showed a significant (P < 0.01) enhancement of dendritic arborization (dendritic branching points) and dendritic intersections along the length of both apical and basal dendrites in hippocampal (CA3) pyramidal neurons is comparable to control., Conclusion: Based on our results obtained, we conclude that constituents present in aqueous root extract of Gg have neuronal dendritic growth stimulating properties.
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- 2014
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9. Beneficial effect of aqueous root extract of Glycyrrhiza glabra on learning and memory using different behavioral models: An experimental study.
- Author
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Chakravarthi KK and Avadhani R
- Abstract
Background: In the traditional system of medicine, the roots and rhizomes of Glycyrrhiza glabra (Gg) (family: Leguminosae) have been studied for their ability to improve a variety of health ailments., Aims: The present study was designed to investigate the beneficial effects of Gg root extract on learning and memory in 1-month-old male Wistar albino rats. Four doses (75, 150, 225, and 300 mg/kg) of aqueous extract of root of Gg was administered orally for six successive weeks., Materials and Methods: The aqueous extracts were evaluated for their effect on spatial learning and memory in rats using the elevated plus maze, Hebb-William maze, and Morris water maze tests which served as the exteroceptive behavioral model. Diazepam-induced amnesia served as the interoceptive behavioral model., Results: Results showed that all the doses of aqueous root extract of Gg significantly enhanced the memory; however, in the doses of 150 and 225 mg/kg, it showed a significant (P < 0.01) enhancement in learning and memory. Furthermore, Diazepam-induced amnesia was reversed by the aqueous root extract of Gg (150 and 225 mg/kg, p.o.)., Conclusion: These findings suggest that the memory enhancement effects of Gg may be mediated by its antioxidant and anti-inflammatory activities. Thus, Gg appears to be a promising drug for improving memory in the management of impaired learning, dementia, Alzheimer's disease, and other neurodegenerative disorders.
- Published
- 2013
- Full Text
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