scholarly journals Chinese patients with hereditary spastic paraplegias (HSPs): a protocol for a hospital-based cohort study

BMJ Open ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. e054011
Author(s):  
Yu-Sen Qiu ◽  
Yi-Heng Zeng ◽  
Ru-Ying Yuan ◽  
Zhi-Xian Ye ◽  
Jin Bi ◽  
...  

IntroductionHereditary spastic paraplegias (HSPs) are uncommon but not rare neurodegenerative diseases. More than 100 pathogenic genes and loci related to spastic paraplegia symptoms have been reported. HSPs have the same core clinical features, including progressive spasticity in the lower limbs, though HSPs are heterogeneous (eg, clinical signs, MRI features, gene mutation). The age of onset varies greatly, from infant to adulthood. In addition, the slow and variable rates of disease progression in patients with HSP represent a substantial challenge for informative assessment of therapeutic efficacy. To address this, we are undertaking a prospective cohort study to investigate genetic–clinical characteristics, find surrogates for monitoring disease progress and identify clinical readouts for treatment.Methods and analysisIn this case-control cohort study, we will enrol 200 patients with HSP and 200 healthy individuals in parallel. Participants will be continuously assessed for 3 years at 12-month intervals. Six aspects, including clinical signs, genetic spectrum, cognitive competence, MRI features, potential biochemical indicators and nerve electrophysiological factors, will be assessed in detail. This study will observe clinical manifestations and disease severity based on different molecular mechanisms, including oxidative stress, cholesterol metabolism and microtubule dynamics, all of which have been proposed as potential treatment targets or modalities. The analysis will also assess disease progression in different types of HSPs and cellular pathways with a longitudinal study using t tests and χ2 tests.Ethics and disseminationThe study was granted ethics committee approval by the first affiliated hospital of Fujian Medical University (MRCTA, ECFAH of FMU (2019)194) in 2019. Findings will be disseminated via presentations and peer-reviewed publications. Dissemination will target different audiences, including national stakeholders, researchers from different disciplines and the general public.Trial registration numberNCT04006418.

2021 ◽  
pp. 763-771
Author(s):  
Yuichi Akaba ◽  
Ryo Takeguchi ◽  
Ryosuke Tanaka ◽  
Satoru Takahashi

Hereditary spastic paraplegias (HSPs) are rare neurological disorders caused by degeneration of the corticospinal tract. Among the 79 causative genes involved in HSPs, variants in <i>SPAST</i> on chromosome 2p22, which encodes the microtubule-severing protein spastin, are responsible for spastic paraplegia type 4 (SPG4), the most common form of HSPs. SPG4 is characterized by a clinically pure phenotype that is associated with restricted involvement of the corticospinal tract; however, it is often accompanied by additional neurological symptoms such as epilepsy and cognitive impairment. There are few reports regarding the clinical course and treatment of epilepsy associated with SPG4. We describe a 21-year-old male patient with progressive weakness and spasticity of the lower limbs since infancy, which was complicated by epilepsy and cognitive impairment. Magnetic resonance imaging of the brain showed right hippocampal atrophy before the onset of epilepsy. Genetic analysis revealed a novel missense variant (NM_014946.4:c.1330G&#x3e;C, p.Asp444His) in the <i>SPAST</i> gene. At the age of 13, the patient developed focal epilepsy, characterized by focal onset seizures that were preceded by a sensation of chest tightness. Carbamazepine, levetiracetam, and zonisamide were ineffective in controlling the seizures; however, the use of lacosamide in combination with lamotrigine and valproate was highly effective in improving the seizure symptoms and led to the patient being seizure free for at least 2 years. In conclusion, the missense variant in <i>SPAST</i> may cause a complex SPG4 phenotype accompanied by epilepsy and cognitive impairment, suggesting that the clinical manifestations of this condition do not confine to the motor system.


2021 ◽  
Vol 12 ◽  
Author(s):  
Maria Gnoli ◽  
Evelise Brizola ◽  
Morena Tremosini ◽  
Elena Pedrini ◽  
Margherita Maioli ◽  
...  

Collagen type I mutations are related to wide phenotypic expressions frequently causing an overlap of clinical manifestations, in particular between Osteogenesis Imperfecta (OI) and Ehlers-Danlos syndrome (EDS). Both disorders present inter- and intra-familial clinical variability and several clinical signs are present in both diseases. Recently, after the observation that some individuals first ascertained by a suspicion of EDS resulted then carriers of pathogenic variants of genes known to primarily cause OI, some authors proposed the term “COL1-related overlap disorder” to describe these cases. In this paper, we report clinical, molecular, and biochemical information about an individual with a diagnosis of EDS with severe joint hypermobility who carries a pathogenic heterozygous variant in COL1A2 gene, and a benign variant in COL1A1 gene. The pathogenic variant, commonly ascribed to OI, as well as the benign variant, has been inherited from the individual's mother, who presented only mild signs of OI and the diagnosis of OI was confirmed only after molecular testing. In addition, we reviewed the literature of similar cases of overlapping syndromes caused by COL1 gene mutations. The reported case and the literature review suggest that the COL1-related overlap disorders (OI, EDS and overlapping syndromes) represent a continuum of clinical phenotypes related to collagen type I mutations. The spectrum of COL1-related clinical manifestations, the pathophysiology and the underlying molecular mechanisms support the adoption of the updated proposed term “COL1-related overlap disorder” to describe the overlapping syndromes.


2016 ◽  
pp. 86-93
Author(s):  
M.Yu. Yegorov ◽  
◽  
A.A. Sukhanova ◽  

The objective: study the features of gynecological, physical history, diagnosis and treatment of patients with benign epithelial ovarian tumors (BeEOT) and borderline epithelial ovarian tumors (BEOT), determining the frequency of recurrence of ovarian tumors in the postoperative period. Patients and methods. According to a retrospective analysis of case histories of 112 women with epithelial ovarian tumors (EOT) underwent conservative or radical surgical treatment in a hospital, two groups were formed: I group – patients with benign epithelial ovarian tumors (BeEOT), which amounted to 85 (75.9%) women, and group II – patients with borderline epithelial ovarian tumors (BEOT), which amounted to 27 (24.1%) women. It was found that the main complaints of patients with EOT were pain (49.1%), abdominal distension (17%), and abnormal uterine bleeding (12.5%). The highest incidence of BeEOT (31.8%) observed in the age group of 41–50 years, while the peak incidence of BEOT (44.4%) corresponds to the age group of 51–60 years. Results. In BEOT endocrine pathology occurs significantly more frequently (p<0.05) than in BeEOT – 25.9% vs. 9.4%, respectively. Pathology of pancreatic-hepatobiliary system occurs significantly more frequently (p<0.05) in patients with BEOT compared with BeEOT – 81.5% versus 57.6%, respectively. Venous disorders (varicose veins of the pelvic organs, lower limbs, haemorrhoids) observed in BEOT significantly more frequently (p<0.05) than in BeEOT – 18.5% vs. 5.9%, respectively. EOT most often diagnosed in the period from 1 to 6 months after the first clinical manifestations with an average uptake of medical care 4.6±0.57 months. In assessing of peritoneal exudate cytogram the mesothelium cells are significantly more common for BeEOT (p<0.01) than BEOT – 79.4% versus 40.9%, respectively. Cervicitis is more likely significantly to occur in BeEOT (p<0.01) than in BEOT – 29.4% vs. 7.4%, respectively. The most common histological type among the benign tumors of the ovaries are endometriomas, which occurred in 48.2% of all BeEOT cases, and among the borderline tumors – serous tumors, which accounted for 59.3% of all BEOTs. Conclusion. The use of organ sparing surgery in EOT increases the risk of recurrence, especially in the case of endometrial histology or borderline variant of tumor. Key words: benign and borderline epithelial ovarian tumors, clinical-anamnestic analysis, diagnosis, treatment.


Author(s):  
А.Р. Зарипова ◽  
Л.Р. Нургалиева ◽  
А.В. Тюрин ◽  
И.Р. Минниахметов ◽  
Р.И. Хусаинова

Проведено исследование гена интерферон индуцированного трансмембранного белка 5 (IFITM5) у 99 пациентов с несовершенным остеогенезом (НО) из 86 неродственных семей. НО - клинически и генетически гетерогенное наследственное заболевание соединительной ткани, основное клиническое проявление которого - множественные переломы, начиная с неонатального периода жизни, зачастую приводящие к инвалидизации с детского возраста. К основным клиническим признакам НО относятся голубые склеры, потеря слуха, аномалия дентина, повышенная ломкость костей, нарушения роста и осанки с развитием характерных инвалидизирующих деформаций костей и сопутствующих проблем, включающих дыхательные, неврологические, сердечные, почечные нарушения. НО встречается как у мужчин, так и у женщин. До сих пор не определена степень генетической гетерогенности заболевания. На сегодняшний день известно 20 генов, вовлеченных в патогенез НО, и исследователи разных стран продолжают искать новые гены. В последнее десятилетие стало известно, что аутосомно-рецессивные, аутосомно-доминантные и Х-сцепленные мутации в широком спектре генов, кодирующих белки, которые участвуют в синтезе коллагена I типа, его процессинге, секреции и посттрансляционной модификации, а также в белках, которые регулируют дифференцировку и активность костеобразующих клеток, вызывают НО. Мутации в гене IFITM5, также называемом BRIL (bone-restricted IFITM-like protein), участвующем в формировании остеобластов, приводят к развитию НО типа V. До 5% пациентов имеют НО типа V, который характеризуется образованием гиперпластического каллуса после переломов, кальцификацией межкостной мембраны предплечья и сетчатым рисунком ламелирования, наблюдаемого при гистологическом исследовании кости. В 2012 г. гетерозиготная мутация (c.-14C> T) в 5’-нетранслируемой области (UTR) гена IFITM5 была идентифицирована как основная причина НО V типа. В представленной работе проведен анализ гена IFITM5 и идентифицирована мутация c.-14C>T, возникшая de novo, у одного пациента с НО, которому впоследствии был установлен V тип заболевания. Также выявлены три известных полиморфных варианта: rs57285449; c.80G>C (p.Gly27Ala) и rs2293745; c.187-45C>T и rs755971385 c.279G>A (p.Thr93=) и один ранее не описанный вариант: c.128G>A (p.Ser43Asn) AGC>AAC (S/D), которые не являются патогенными. В статье уделяется внимание особенностям клинических проявлений НО V типа и рекомендуется определение мутации c.-14C>T в гене IFITM5 при подозрении на данную форму заболевания. A study was made of interferon-induced transmembrane protein 5 gene (IFITM5) in 99 patients with osteogenesis imperfecta (OI) from 86 unrelated families and a search for pathogenic gene variants involved in the formation of the disease phenotype. OI is a clinically and genetically heterogeneous hereditary disease of the connective tissue, the main clinical manifestation of which is multiple fractures, starting from the natal period of life, often leading to disability from childhood. The main clinical signs of OI include blue sclera, hearing loss, anomaly of dentin, increased fragility of bones, impaired growth and posture, with the development of characteristic disabling bone deformities and associated problems, including respiratory, neurological, cardiac, and renal disorders. OI occurs in both men and women. The degree of genetic heterogeneity of the disease has not yet been determined. To date, 20 genes are known to be involved in the pathogenesis of OI, and researchers from different countries continue to search for new genes. In the last decade, it has become known that autosomal recessive, autosomal dominant and X-linked mutations in a wide range of genes encoding proteins that are involved in the synthesis of type I collagen, its processing, secretion and post-translational modification, as well as in proteins that regulate the differentiation and activity of bone-forming cells cause OI. Mutations in the IFITM5 gene, also called BRIL (bone-restricted IFITM-like protein), involved in the formation of osteoblasts, lead to the development of OI type V. Up to 5% of patients have OI type V, which is characterized by the formation of a hyperplastic callus after fractures, calcification of the interosseous membrane of the forearm, and a mesh lamellar pattern observed during histological examination of the bone. In 2012, a heterozygous mutation (c.-14C> T) in the 5’-untranslated region (UTR) of the IFITM5 gene was identified as the main cause of OI type V. In the present work, the IFITM5 gene was analyzed and the de novo c.-14C> T mutation was identified in one patient with OI who was subsequently diagnosed with type V of the disease. Three known polymorphic variants were also identified: rs57285449; c.80G> C (p.Gly27Ala) and rs2293745; c.187-45C> T and rs755971385 c.279G> A (p.Thr93 =) and one previously undescribed variant: c.128G> A (p.Ser43Asn) AGC> AAC (S / D), which were not pathogenic. The article focuses on the features of the clinical manifestations of OI type V, and it is recommended to determine the c.-14C> T mutation in the IFITM5 gene if this form of the disease is suspected.


2012 ◽  
pp. 74-84
Author(s):  
Thi Kieu Nhi Nguyen

Objectives: 1. Estimating the ratios of clinical and paraclinical signs of post-term newborns hospitalized at Pediatric Department of Hue University Hospital. 2. Identifying the relation between clinical signs and paraclinical signs. Materials and Method: 72 post- term babies < 7 days of life hospitalized at NICU from 2010/5 to 2011/4. Classification of post - term newborn was based on WHO 2003: gestational age ≥ 42 weeks with clinical manifestations: desquamation on press with fingers or natural desquamation, withered or meconial umbilicus, meconial long finger nails (*) or geatational age still < 42 weeks with theses clinical manifestations (*). Data were recorded on a clinical record form. Per-protocol analysis of clinical outcomes was performed by using Medcalc 11.5 and Excell 2007. Analyses used the χ2 test or Fisher's exact test for categorical data; Student's t test was used for continuous data and the Mann-Whitney U test for nonparametric data. Data were presented as means or proportions with 95% CIs. Results: Clinical characteristics: Tachypnea and grasp were main reasons of hospitalisation (48.61%). Poor feeding, vomitting (16.67%). Asphyxia (8.34%). Jawndice (6.94%). Hypothermia < 36.50C (13.89%), fever (13.89%). Tachypnea (59.72%). Bradycardia (1.39%). Poor feeding (11.11%). Hypertonia (9.72%). Paraclinical characteristics: Erythrocytes < 4.5.1012/l (51.39%), Leucocytes 5 – 25.103/mm3 (81.94%), Thrombocytes 100- 400.103/mm3 (94.44%). Hemoglobinemia < 10mg/l (67.61%). Maternal characteristics: Menstrual cycles regular (75%). Primiparity (75%). Amniotic volume average (70.42%), little (29.58%). Aminiotic liquid clair (62.5%), aminiotic liquid yellow (4.17%), aminiotic meconial liquid (33.33%). Maternal manifestation of one of many risk factors consist of genital infection; urinary infection; fever before, during, after 3 days of birth; prolonged delivery; medical diseases influence the foetus (75%). The relation between clinical signs and paraclinical signs: There was significantly statistical difference: between gestationnal age based on obstetrical criteria and amniotic volume on ultrasound (p < 0.05); between birth weight and glucosemia p < 0.02). There was conversional correlation of average level between erythroctes number and respiratory rate (r = - 0.5158; p < 0,0001), concordance correlation of weak level betwwen leucocytes number and respiratory rate r = 0.3045; p = 0.0093). Conclusion: It should made diagnosis of postterm baby based on degree of desquamation. The mother who has menstrual cycles regular is still delivered of a postterm baby. A postterm baby has the individual clinical and paraclinical signs.


2020 ◽  
Vol 28 (1) ◽  
pp. 152-168
Author(s):  
Zhi-Xiang Zhou ◽  
Zhong Ren ◽  
Bin-Jie Yan ◽  
Shun-Lin Qu ◽  
Zhi-Han Tang ◽  
...  

: Atherosclerosis is a chronic inflammatory vascular disease. Atherosclerotic cardiovascular disease is the main cause of death in both developed and developing countries. Many pathophysiological factors, including abnormal cholesterol metabolism, vascular inflammatory response, endothelial dysfunction and vascular smooth muscle cell proliferation and apoptosis, contribute to the development of atherosclerosis and the molecular mechanisms underlying the development of atherosclerosis are not fully understood. Ubiquitination is a multistep post-translational protein modification that participates in many important cellular processes. Emerging evidence suggests that ubiquitination plays important roles in the pathogenesis of atherosclerosis in many ways, including regulation of vascular inflammation, endothelial cell and vascular smooth muscle cell function, lipid metabolism and atherosclerotic plaque stability. This review summarizes important contributions of various E3 ligases to the development of atherosclerosis. Targeting ubiquitin E3 ligases may provide a novel strategy for the prevention of the progression of atherosclerosis.


2020 ◽  
Vol 16 ◽  
Author(s):  
Alexander K. C. Leung ◽  
Joseph M. Lam ◽  
Kin Fon Leong ◽  
Kam Lun Hon

Background: Vitiligo is a relatively common acquired pigmentation disorder that can cause significant psychological stress and stigmatism. Objective: This article aims to familiarize physicians with the clinical manifestations, evaluation, diagnosis, and management of vitiligo. Methods: A Pubmed search was conducted in Clinical Queries using the key term "vitiligo". The search included metaanalyses, randomized controlled trials, clinical trials, observational studies, and reviews. The search was restricted to the English literature. The information retrieved from the above search was used in the compilation of the present article. The information retrieved from the above search was used in the compilation of the present article. Results: Approximately one quarter of patients with vitiligo have the onset before 10 years of age. Genetic, immunological, neurogenic and environmental factors may have a role to play in the pathogenesis. Vitiligo typically presents as acquired depigmented, well-demarcated macules/patches that appear milk- or chalk-white in color. Lesions tend to increase in number and enlarge centrifugally in size with time. Sites of predilection include the face, followed by the neck, lower limbs, trunk, and upper limbs. The clinical course is generally unpredictable. In children with fair skin, no active treatment is usually necessary other than the use of sunscreens and camouflage cosmetics. If treatment is preferred for cosmesis, topical corticosteroids, topical calcineurin inhibitors, and narrowband ultraviolet B phototherapy are the mainstays of treatment. Conclusion: The therapeutic effect of all the treatment modalities varies considerably from individual to individual. As such, treatment must be individualized. In general, the best treatment response is seen in younger patients, recent disease onset, darker skin types, and head and neck lesions. Topical corticosteroids and calcineurin inhibitors are the treatment of choice for those with localized disease. Topical calcineurin inhibitors are generally preferred for lesions on genitalia, intertriginous areas, face, and neck. Narrowband ultraviolet B phototherapy should be considered in patients who have widespread vitiligo or those with localized vitiligo associated with a significant impact on the quality of life who do not respond to treatment with topical corticosteroids and calcineurin inhibitors.


Author(s):  
P. R. Chavelikar ◽  
G. C. Mandali ◽  
D. M. Patel

Ruminal acidosis is one of the most important clinical emergencies in sheep and goats resulting into high mortality rate. In the present study, eight healthy farm goats and 24 goats presented to the TVCC of the college with clinical signs of ruminal acidosis like anorexia, tympany, increased pulse and respiratory rate, reduced body temperature, doughy rumen, enteritis, oliguria, grinding of teeth, purulent nasal discharge, muscle twitching, arched back, dehydration and recumbency with rumen liquor pH below 6 were examined for haematological alterations using autohaematoanalyzer. Among various haematological parameters evaluated from acidotic goats, the mean values of Hb (12.21±0.17 vs. 10.86±0.15 g/dl), TEC (14.28±0.16 vs. 12.04±0.36 ×106/ μl), TLC (13.43±0.11 vs. 11.11±0.27 ×103/μl), PCV (36.91±0.53 vs. 29.88±0.55%), neutrophils (64.54±0.93 vs. 28.13±0.92%), MCV (23.38±0.37 vs. 19.38±1.34 fl) and MCH (7.03±0.08 vs. 6.31±0.25 pg) were found significantly increased, while the mean values of lymphocytes (28.00±0.82 vs. 65.38±0.80%) and MCHC (24.55 ±0.26 vs. 34.88±0.97 g/dl) were decreased significantly from the base values of healthy goats. It was concluded that ruminal acidosis induced due to accidental heavy ingestion of readily fermentable carbohydrate rich grains and food waste significantly altered the haematological profile concurrent with clinical manifestations in goats, and hence can be used to assess the severity of the disease.


Sign in / Sign up

Export Citation Format

Share Document