Nonalcoholic fatty liver disease (NAFLD) is a common ailment. It is usually found in association with diabetes or obesity. There are no approved drugs to treat this condition. The study of flavonoid consumption has increased over the decades due to their antioxidative properties, although the literature is scarce when it comes to their effects in liver tissue. The purpose of this study was to evaluate the role of leucoanthocyanidin in nonalcoholic hepatic steatosis. Thirty male albino rabbits were divided in 3 groups. Group 1 had a regular commercial diet. The second group had a regular diet and 10 mL of egg yolk and 1.5 g of pure cholesterol. The rabbits of the third group were on the same regimen as the second, but were also treated with grape leucoanthocyanidin (50 mg/kg/day) for 100 days. On the last day of the experiment, the animals were euthanized, and the livers excised and fixated in a 10% formalin solution. Afterwards, fragments of each liver were removed and histologically processed and analyzed. The stereological evaluation showed that leucoanthocyanidin reduced NAFLD in comparison with the nontreated group. This was also observed in the histological analysis of the liver tissue, as the treated group had less foci of fatty tissue. Leucoanthocyanidin may therefore be a promising substance to treat NAFLD, although further studies are needed.
Cells Tissues Organs
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Κυριακή 17 Ιουνίου 2018
Grape Leucoanthocyanidin Protects Liver Tissue in Albino Rabbits with Nonalcoholic Hepatic Steatosis
Segmentation of Dilated Hemorrhoidal Veins in Hemorrhoidal Disease
Vein segmentation is a vascular remodeling process mainly studied in experimental conditions and linked to hemodynamic factors, with clinical implications. The aim of this work is to assess the morphologic characteristics, associated findings, and mechanisms that participate in vein segmentation in humans. To this end, we examined 156 surgically obtained cases of hemorrhoidal disease. Segmentation occurred in 65 and was most prominent in 15, which were selected for serial sections, immunohistochemistry, and immunofluorescence procedures. The dilated veins showed differently sized spaces, separated by thin septa. Findings associated with vein segmentation were: (a) vascular channels formed from the vein intima endothelial cells (ECs) and located in the vein wall and/or intraluminal fibrin, (b) vascular loops formed by interconnected vascular channels (venous-venous connections), which encircled vein wall components or fibrin and formed folds/pillars/papillae (FPPs; the encircling ECs formed the FPP cover and the encircled components formed the core), and (c) FPP splitting, remodeling, alignment, and fusion, originating septa. Thrombosis was observed in some nonsegmented veins, while the segmented veins only occasionally contained thrombi. Dense microvasculature was also present in the interstitium and around veins. In conclusion, the findings suggest that hemorrhoidal vein segmentation is an adaptive process in which a piecemeal angiogenic mechanism participates, predominantly by intussusception, giving rise to intravascular FPPs, followed by linear rearrangement, remodeling and fusion of FPPs, and septa formation. Identification of other markers, as well as the molecular bases, hemodynamic relevance, and possible therapeutic implications of vein segmentation in dilated hemorrhoidal veins require further studies.
Cells Tissues Organs ;205:1–9
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In Memoriam, Fred Gordin, MD, 1951–2018
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Accessory bile duct: a rare but important anatomical variant
An 84-year-old man presented with pancreatic adenocarcinoma. Following neoadjuvant chemoradiation, the patient underwent a pancreaticoduodenectomy, complicated by early bile leak. Re-exploration and intraoperative cholangiogram identified an accessory common bile duct draining segment 5 of the right hepatic lobe, which was then ligated. The patient underwent a complicated postoperative course eventually developing sepsis secondary to biliary stasis. He elected for comfort measures and passed away secondary to complications of sepsis.
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Identification of left ventricular chamber-like aneurysm related to cardiac sarcoidosis
Description
A 58-year-old woman was referred to us with an abnormal ECG, showing complete right bundle branch block and left anterior fascicular block. An echocardiogram showed left ventricular (LV) septal thinning and hinted at the presence of an LV aneurysm. An enhanced CT indeed revealed an LV aneurysm-like structure. After appropriate testing to exclude coronary artery disease, this LV anomaly led us to suspect the possibility of cardiac sarcoidosis (CS). Cine cardiac magnetic resonance (CMR) imaging showed an apparent chamber-like aneurysm, and late gadolinium enhancement (LGE) CMR showed transmural positive enhancement in the mid-portion of the LV at the region of the aneurysm (figure 1A,B). As our institution lacked an FDG-PET scanner, gallium scintigraphy was instead performed, which showed uptake in the heart and bilateral hilar lymph nodes (figure 2A,B); hilar lymphadenopathy was undetected on enhanced CT, and its presence strongly indicated sarcoidosis. We finally made...
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Concurrent metastases of papillary thyroid carcinoma to the scalp and Meckels cave
We present the case of a 65-year-old man with severe headaches and unilateral facial weakness, seen in consultation by the dermatology service to rule out primary cutaneous melanoma after brain imaging identified an enlarging mass within the right trigeminal (Meckel's) cave. Examination revealed only a pair of erythematous papules on the scalp, for which biopsy demonstrated metastatic papillary thyroid carcinoma. Further evaluation and subsequent thyroidectomy confirmed the origin of widespread internal disease, followed by definitive excision of scalp lesions and multimodal management of systemic involvement. Whereas presentation of metastasis to the skin is highly variable, a low threshold for biopsy may allow for histological identification of internal disease not otherwise considered in the clinical differential.
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Varicella zoster lumbosacral plexopathy: a rare cause of lower limb weakness
This is a rare case of Varicella zoster virus (VZV) lumbosacral plexopathy in an 84-year-old women presenting with lower limb weakness and rash. Contrast-enhanced MRI showed enhancement of the left L3–L5 descending nerves and left lumbosacral plexus consistent with inflammatory/infectious aetiology. Cerebrospinal fluid PCR confirmed VZV DNA and cerebrospinal fluid serological testing was positive for VZV immunoglobulin (Ig)M and IgG antibodies. The patient was treated with intravenous acyclovir but this was complicated by the development of acute renal failure attributed to acyclovir-induced nephropathy, requiring dose adjustment. After a prolonged course of oral acyclovir and inpatient rehabilitation, the patient made a partial neurological and functional recovery.
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Bone inside eye: choroidal osteoma presenting as exudative retinal detachment: a challenge to diagnosis
Description
A 38-year-old woman presented to outpatient department with the chief complaints of gradual onset of painless diminution of vision in the right eye since last 1 month. At presentation, the visual acuity in OD was perception of light and 20/20 in OS. Slit-lamp examination of anterior segment was found to be within normal limits in both eyes. On fundus evaluation of right eye, exudative retinal detachment1 with shifting fluid along with oedematous disc with blurry margin and juxtapapillary subretinal yellowish brown mass were noticed (figure 1A). Fundus in the left eye was within normal limits (figure 1B). With the above clinical examination, a provisional diagnosis of right-eye choroidal osteoma with exudative retinal detachment was made and confirmed on sonography, with an elevated highly reflected choroidal mass persisting at lower scanning sensitivity and acoustic shadow along with retinal detachment (figure 2A). CT scan depicted evidence of...
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Tracheal agenesis in a new born: lessons learnt
Tracheal agenesis is a rare but fatal congenital tracheal malformation. Lack of prenatal symptom and a typical clinical presentation lead to failure to arrive at a correct diagnosis and confusion during resuscitation. We report a case of a newborn male child with type 2 tracheal agenesis. Despite a typical presentation, diagnosis was delayed after unsuccessful intubation, examination under anaesthesia and emergency tracheostomy. The embryology, diagnostic criteria and potential treatment options are discussed. This case report is valuable in increasing awareness of this rare condition and will help us in being better prepared in managing these children. Future studies should aim to find the optimal replacement for the tracheal.
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Isolated thyroid metastasis from benign phyllodes tumour
We present a rare and interesting case of a 35-year-old woman who initially underwent an uneventful wide excision for a 13 cm left benign phyllodes tumour. She then noted a slowly growing left thyroid nodule 8 months postsurgery which on thyroidectomy 4 years later was shown to be a 6.9cm isolated thyroid metastasis from the phyllodes tumour. As this may be the first reported such case in the literature, implications on histological classification, predictive factors for disease progression, mechanisms of metastasis, and evaluation, management and surveillance of benign phyllodes tumours and thyroid nodule/s with a history of phyllodes tumour can thus be significantly impacted.
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Beware of beta! A case of salbutamol-induced lactic acidosis in severe asthma
A 22-year-old woman presented with symptoms and signs consistent with acute severe asthma. After significant doses of beta-agonist, she developed a significant lactic acidosis. Significant issues arose in this patient's history with regards to purchase of medications, compliance and follow-up with respiratory service. Beta-adrenergic receptors when stimulated have been hypothesised to increase lipolysis, producing free fatty acids, which inhibit the conversion of pyruvate to coenzyme A within the Krebs cycle. Additional pyruvate is generated through stimulation of glycolysis and glycogenolysis through simultaneous catecholamine surge. This increased pyruvate load is shunted through anaerobic glycolysis, producing increased lactate. Steroid use during an asthma attack enhances the beta-2 receptor sensitivity, further potentiating lactate production. The hyperadrenergic state in this young asthmatic likely resulted in pyruvate and therefore lactate rise and thus metabolic acidosis as mentioned before. This piece highlights a physiological phenomenon that may occur in the context of iatrogenic hyperadrenergism.
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Phemphigoid gestationis
Description
A 32-year-old nulliparous woman presented at 33 weeks' gestation with intense pruritus initiated 1 month earlier. She was under treatment for scabies, with no improvement. She was healthy and her pregnancy had had no intercurrences so far. During the physical examination at the emergency room, extensive erythematous plaques with vesicles and bullae could be seen on her abdomen, trunk, neck and all four extremeties (figures 1 and 2).
Figure 1
Macroscopic skin lesions of 33-week pregnant woman: initially, lesions are like erythematous papules or targetoid lesions (A, abdomen; B, back).
Figure 2
Macroscopic skin lesions of 33-week pregnant woman: over time, small vesicles or bullae appear on normal skin or on top of urticarial plaques (C, feet).
Due to the severity of her symptoms, she was admitted to the obstetrics ward in order to undergo intravenous...
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Case of posterior cortical atrophy (PCA) evolved to PCA-CBS
A 68-year-old lawyer developed insidious disturbances in topographic orientation and apraxia. He underwent a geriatric evaluation, only documenting slight cognitive disturbances, and a 18F-fluorodeoxyglucose positron emission tomography (FDG-PET), showing mild right-lateralised frontoparietal hypometabolism. After 1 year, because of worsening in spatial orientation and the onset of dressing apraxia, he was referred to our memory clinic. The neuropsychological evaluation documented proeminent visuospatial, praxis deficits and dysgraphia. Cerebrospinal fluid biomarker analysis showed mild increase of total-, with normal Aβ1–42, ruling out Alzheimer's disease. Progression of the right parietal hypometabolism at FDG-PET and right superior longitudinal fasciculus damage at high-field MRI revealed a probable neurodegenerative aetiology. The neurological examination disclosed then Gerstmann's and Balint's syndromes, and extrapyramidal signs later appeared, suggesting the diagnosis of posterior cortical atrophy associated with corticobasal syndrome. Genetic analysis for mutations inmicrotubule-associated protein tau (MAPT), C9orf72 and GRN genes was negative. A 1-year follow-up documented significant worsening of the cognitive and functional impairment, revealing a frank dementia.
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Beliefs of a traditional rural Indian family towards naturalistic and faith healing for treating epilepsy: a case study
In this case study, we describe our experiences with a rural poor family from north India that initially contacted faith healers for treatment of their child who was having symptoms suggestive of epilepsy, but the seizures continued even after this. The family migrated to a city, where they started allopathic treatment, but eventually they had to discontinue it as there was no apparent relief. Again, they went back to their native village and restarted the treatment from the faith healer.
This case study highlights the fact that in spite of the significant development of medical science, many questions pertaining to epilepsy treatment are still unanswered. Such dissatisfaction with the allopathic treatment of epilepsy is very common. Complexity of the disease and high cost of modern medication, side effects of drugs, efficient but heavy treatment protocols and unpredictable outcome are responsible for continued practice of people consulting faith healers for treatment of epilepsy. However, these remain unnoticed and undocumented.
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Correction: Multiloculated mesothelial cyst presenting as a malignant mimic
Peng S, Park L, Kilpatrick SE, et al. Multiloculated mesothelial cyst presenting as a malignant mimic. BMJ Case Rep 2018. doi: 10.1136/bcr-2017-222280.
This article was published with the author order listed incorrectly. The correct author order is as follows: June S Peng, Lisa Park, Scott E Kilpatrick, Sricharan Chalikonda.
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Ecological association between operative vaginal delivery and obstetric and birth trauma [Research]
BACKGROUND:
Increased use of operative vaginal delivery (use of forceps, vacuum or other device) has been recommended to address high rates of cesarean delivery. We sought to determine the association between rates of operative vaginal delivery and obstetric trauma and severe birth trauma.
METHODS:We carried out an ecological analysis of term, singleton deliveries in 4 Canadian provinces (2004–2014) using data from the Canadian Institute for Health Information. The primary exposure was mode of delivery. The primary outcomes were obstetric trauma and severe birth trauma.
RESULTS:Data on 1 938 913 deliveries were analyzed. The rate of obstetric trauma was 7.2% in nulliparous women, and 2.2% and 2.7% among parous women without and with a previous cesarean delivery, respectively, and rates of severe birth trauma were 2.1, 1.7 and 0.7 per 1000, respectively. Each 1% absolute increase in rates of operative vaginal delivery was associated with a higher frequency of obstetric trauma among nulliparous women (adjusted rate ratio [ARR] 1.06, 95% confidence interval [CI] 1.05–1.06), parous women without a previous cesarean delivery (ARR 1.10, 95% CI 1.08–1.13) and parous women with a previous cesarean delivery (ARR 1.11, 95% CI 1.07–1.16). Operative vaginal delivery was associated with more frequent severe birth trauma, but only in nulliparous women (ARR 1.05, 95% CI 1.03–1.07). In nulliparous women, sequential vacuum and forceps instrumentation was associated with the largest increase in obstetric trauma (ARR 1.44, 95% CI 1.35–1.55) and birth trauma (ARR 1.53, 95% CI 1.03–2.27).
INTERPRETATION:Increases in population rates of operative vaginal delivery are associated with higher population rates of obstetric trauma, and in nulliparous women with severe birth trauma.
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Cancers, Vol. 10, Pages 207: Hypersialylation in Cancer: Modulation of Inflammation and Therapeutic Opportunities
Cancers, Vol. 10, Pages 207: Hypersialylation in Cancer: Modulation of Inflammation and Therapeutic Opportunities
Cancers doi: 10.3390/cancers10060207
Authors: Emily Rodrigues Matthew S. Macauley
Cell surface glycosylation is dynamic and often changes in response to cellular differentiation under physiological or pathophysiological conditions. Altered glycosylation on cancers cells is gaining attention due its wide-spread occurrence across a variety of cancer types and recent studies that have documented functional roles for aberrant glycosylation in driving cancer progression at various stages. One change in glycosylation that can correlate with cancer stage and disease prognosis is hypersialylation. Increased levels of sialic acid are pervasive in cancer and a growing body of evidence demonstrates how hypersialylation is advantageous to cancer cells, particularly from the perspective of modulating immune cell responses. Sialic acid-binding receptors, such as Siglecs and Selectins, are well-positioned to be exploited by cancer hypersialylation. Evidence is also mounting that Siglecs modulate key immune cell types in the tumor microenvironment, particularly those responsible for maintaining the appropriate inflammatory environment. From these studies have come new and innovative ways to block the effects of hypersialylation by directly reducing sialic acid on cancer cells or blocking interactions between sialic acid and Siglecs or Selectins. Here we review recent works examining how cancer cells become hypersialylated, how hypersialylation benefits cancer cells and tumors, and proposed therapies to abrogate hypersialylation of cancer.
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Simple and Effective Administration and Visualization of Microparticles in the Circulatory System of Small Fishes Using Kidney Injection
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Two-step Approach to Explore Early- and Late-stages of Organ Formation in the Avian Model: The Thymus and Parathyroid Glands Organogenesis Paradigm
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Laparoscopic Pancreatoduodenectomy With Modified Blumgart Pancreaticojejunostomy
Laparoscopic pancreatoduodenctomy (LPD) may offer advantages over open pancreatoduodenectomy, including early postoperative mobilization, less delayed gastric emptying and a shorter hospital stay. However, LPD is technically challenging and not well-standardized, especially regarding the pancreatic anastomosis. We describe a standardized technique for the pancreatic anastomosis during LPD: modified Blumgart pancreaticojejunostomy.
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Efficacy of a Dual-ring Wound Protector for Prevention of Surgical Site Infections After Pancreaticoduodenectomy in Patients With Intrabiliary Stents: A Randomized Clinical Trial
Objective: To evaluate the efficacy of a dual-ring wound protector for preventing incisional surgical site infection (SSI) among patients with preoperative biliary stents undergoing pancreaticoduodenectomy (PD). Methods and analysis: This study was a parallel, dual-arm, double-blind randomized controlled trial. Adult patients with a biliary stent undergoing elective PD at 2 tertiary care institutions were included (February 2013 to May 2016). Patients were randomly assigned to receive a surgical dual-ring wound protector or no wound protector, and also the current standard of care. The main outcome measure was incisional SSI, as defined by the Centers for Disease Control and Prevention criteria, within 30 days of the index operation. Results: A total of 107 patients were recruited (mean age 67.2 years; standard deviation 12.9; 65% male). No significant differences were identified between the intervention and control groups (age, sex, body mass index, preoperative comorbidities, American Society of Anesthesiologists class, prestent cholangitis). There was a significant reduction in the incidence of incisional SSI in the wound protector group (21.1% vs 44.0%; relative risk reduction 52%; P = 0.010). Patients with completed PD also displayed a decrease in incisional SSI with use of the wound protector compared with those palliated surgically (27.3% vs 48.7%; P = 0.04). Multivariate analysis did not identify any significant modifying factor relationships (estimated blood loss, duration of surgery, hospital site, etc.) (P > 0.05). Conclusion: Among adult patients with intrabiliary stents, the use of a dual-ring wound protector during PD significantly reduces the risk of incisional SSI.https://ift.tt/2t6s1e2
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Αλέξανδρος Γ. Σφακιανάκης Medicine by Alexandros G. Sfakianakis,Anapafseos 5 Agios Nikolaos 72100 Crete Greece,00302841026182,0030693260717...
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Alimentary Pharmacology &Therapeutics, EarlyView. https://ift.tt/2qECBIJ
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heory of COVID-19 pathogenesis Publication date: November 2020Source: Medical Hypotheses, Volume 144Author(s): Yuichiro J. Suzuki ScienceD...
