Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 25
Filtrar
1.
Clin Ter ; 174(4): 309-312, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37378498

RESUMO

Background: Variable insertions of Palmaris longus (PL) muscle tendon is described by various authors. Presence of extra PL tendon is also described in literature. As autologus tendon grafting is a blooming arena of clinical research at present time, an additional tendinous slip of PL has promising scope for use as an autograft. Case Report: We report here bilateral bitendinous distal attachment of PL muscle encountered during routine cadaveric dissection. The additional PL tendon in a multitendinous insertion pattern with optimum length and thickness is indeed an additional advantage from the point of view of autograft harvesting. This has also importance in understanding the unusual, altered symptomatology in compressive conditions. Conclusion: Although relatively common, surgeons should be well aware of the various possible aversion of distal attachment of PL which might have significant impact in alteration of symptomatology of neurovascular compressions in the forearm and hand and while choosing an appropriate tendon autograft.


Assuntos
Antebraço , Transferência Tendinosa , Humanos , Antebraço/cirurgia , Tendões , Músculo Esquelético , Punho
2.
Clin Ter ; 174(3): 261-265, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37199362

RESUMO

Background: The fibula is a long bone located at the lateral aspect of the leg. Diaphysis of fibula is supplied by one or more nutrient arteries through an opening referred to as the nutrient foramen. Mor-phometric studies of the nutrient foramina of fibulae are very sparse in literature. Materials and Methods: This cross-sectional descriptive study was conducted on 51 dry adult human fibulae housed in the department of anatomy, AIIMS, New Delhi. Total fibular length along with the number and location of all nutrient foramina present were recorded. Foraminal indexes (FI) of the fibulae were calculated as well. Results: The study revealed that the average length of fibulae was 35.48 ± 1.76 cm. 94% fibulae had a single nutrient foramen and 6 % had two. In fibula with single foramen, the most common location was on the medial crest (50%), followed by between medial crest and posterior border (35%), between the medial crest and interosseous border (8%) and on posterior border (6%). Nutrient foramen was located in middle 1/3rd of shaft in 98 % and in inferior 1/3rd of shaft in 2 % of fibulae. The average foraminal index was 44.85 ± 6.67% with a range of 35.7 to 63.8%. Conclusion: Most common location of nutrient foramen in fibula is middle 1/3rd of shaft on the medial crest with dual nutrient foramina in 6% of fibulae. These parameters show variability in different geographical location and population groups. These data may be helpful for anthropologists, forensic experts, radiologists and might guide in harvesting vascularised fibular bone graft.


Assuntos
Relevância Clínica , Fíbula , Adulto , Humanos , Fíbula/irrigação sanguínea , Estudos Transversais , Nutrientes
3.
Clin Ter ; 174(1): 28-32, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36655641

RESUMO

Introduction: MTHFR being a key regulatory enzyme of 1-carbon metabolism pathway serves critical function of generation of SAM, replenishment of glutathione and nucleotide synthesis and finally methylation of the bio molecules. MTHFR gene mutation is a rare au-tosomal recessive inborn error of metabolism and presents with severe hyperhomocysteinemia. MTHFR polymorphisms on the other hand are commonly encountered of which two 677 C>T and 1298 A>C have been most widely studied and reported to increase the vulnerability to neural tube defects, congenital heart disease, various neuropsychiatric disorders like autism spectrum diseases and attention deficit hyperactiv-ity disease, cleft lip/ palate, acute leukaemia, cardiovascular diseases, occlusive vascular disease in children. Methods: We conducted this prospective clinical trial to examine whether yoga practice can up regulate MTHFR gene expression. Considering the prevalence of MTHFR polymorphism, varied spectrum of its implications in disease causation including male infertility, we conducted the trial involving 30 infertile men who underwent 3 weeks of supervised YBLI. Pre and post intervention assessment of the blood and semen sample was done to see the effects. Results: We have found more than fivefold up-regulation in the expression of MTHFR gene with significant reduction of seminal free radical levels after 3 weeks of yoga practice. Interestingly we noticed significantly higher MTHFR polymorphic variants in infertile male patients compared to healthy fertile controls. Conclusion: MTHFR polymorphisms are also independently associated with many paediatric diseases. Diagnosing MTHFR deficiency in children is a challenging job and requires high index of suspicion and continuous vigilance. Yoga based lifestyle may be adopted both by parents planning conception and also by adolescent children who are sufferers of this condition to halt the consequences of mild to moderate MTHFR deficiency.


Assuntos
Yoga , Adolescente , Criança , Humanos , Masculino , Efeitos Psicossociais da Doença , Genótipo , Metilenotetra-Hidrofolato Redutase (NADPH2)/genética , Pais , Polimorfismo de Nucleotídeo Único
4.
Reumatismo ; 73(1): 24-31, 2021 Apr 19.
Artigo em Inglês | MEDLINE | ID: mdl-33874644

RESUMO

Genetic predisposition may play an important role in the development of fibromyalgia syndrome (FMS). Serotonin is known to be involved in pain modulation and serotonin-1A receptor plays a considerable role in determining the central 5-HT tone. Consequently, variation in 5-HT1A receptor gene (HTR1A) may be responsible for inter-individual variability in pain sensitivity and other clinical symptoms of FMS. Therefore, the objectives of this research work were to study the gene polymorphism of 5-HTR1A gene and to explore the correlation between rs6295 genotype (-1019C/G HTR1A) and duration of pain, pain intensity and pain related depression and anxiety, if any, in FMS. 5-HTR1A genotype for the C(-1019)G polymorphism was typed in 62 patients with FMS and 42 healthy subjects. Present pain intensity, components of pain and pain related depression and anxiety were assessed using the numerical pain rating scale, McGill pain questionnaire and Hamilton depression and anxiety rating scale respectively. 5-HTR1A gene was represented by three different genotypes, homozygous C/C, heterozygous C/G and homozygous G/G. Analysis of the 5-HTR1A gene showed a frequency of 58%, 31% and 11% for the C/C, C/G and G/G genotypes, respectively in FMS group. This proportion was 69%, 23% and 8% in healthy subjects. No significant correlation was observed between 5-HTR1A gene polymorphism and pain and related symptoms in FMS patients. To the best of our knowledge this is the first study which investigated the correlation between the 5-HTR1A gene polymorphism and pain intensity, the affective component of pain, pain related depression and anxiety in FMS.


Assuntos
Fibromialgia , Serotonina , Fibromialgia/genética , Genótipo , Humanos , Dor/genética , Polimorfismo de Nucleotídeo Único , Receptor 5-HT1A de Serotonina/genética
5.
Niger J Physiol Sci ; 33(1): 51-56, 2018 Jun 30.
Artigo em Inglês | MEDLINE | ID: mdl-30091732

RESUMO

Pregnancy places a very high demand on physical, physiological and immunological responses of females,especially when aggravated by parasitic infestation. There is strong evidence that maternal infestations with helminth haveprofound effects on immunity to helminths and other pathogens. This case-control study involved 245 pregnant women aged18-40 years (>30 weeks of gestation) recruited from three secondary level hospitals in Ibadan, Nigeria. Morning stoolsamples collected from pregnant women were examine for intestinal helminths using formol-ether concentration method. Atotal of 38 participants comprising 17 Helminth Positive (HP) and 21 Helminth Negative (HN) pregnant women werepurposely selected for the study. Sera from these women (38) and their babies' cord (38) were analysed for immune factors[interleukins 6 and 8 (IL-6, IL-8), tumor necrosis factor-alpha (TNF-α) and immunoglobulin E (IgE)] were analyzed usingELISA. Anthropometric indices [weight and height in mothers and babies and Chest Circumference (CC) in babies] weremeasured using standard methods. Data were subjected to descriptive statistics and analysed using Student t-test and Pearsoncorrelation at α0.05. Only Ascaris lumbricoides was found in the 17 (6.9%) infested pregnant women. The mean levels of IL-6 (57.8 ± 32.8 vs 52.8±39.6 pg/mL), IL-8 (24.3±3.5 vs 22.0±7.1 pg/mL) and IgE (333.3±96.6 vs 242.3±96.8 IU/mL) weresimilar in HP when compared with HN. In cord sera, IL-8 level was significantly higher in babies of HP (23.7±3.9 pg/mL)compared with babies of HN (20.1±5.9 pg/mL). The levels of IL-6, TNF-α and nutritional indices in HP had significantpositive correlation with corresponding levels in babies of HP mothers. Only CC was significantly lowered in babies of HPcompared with HN mothers. Other anthropometric indices were not significantly different. Therefore, this present studysuggests that helminth infestation may lead to strong Th2 immune responses as is reflected by the cytokine levels of mothersand babies as well as anthropometric measurements of babies of infested mothers. The outcomes of this study provide basisto deworm pregnant women during pregnancy.


Assuntos
Citocinas/sangue , Sangue Fetal/metabolismo , Helmintíase/sangue , Complicações Parasitárias na Gravidez/sangue , Adolescente , Adulto , Animais , Antropometria , Estudos de Casos e Controles , Feminino , Humanos , Recém-Nascido , Nigéria , Gravidez , Resultado da Gravidez , Adulto Jovem
6.
Andrologia ; 49(9)2017 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-27501740

RESUMO

Retraction: 'Aetiology and clinical profile of children with 46, XY differences of sex development at an Indian referral centre' by Vasundhera Chauhan, Rima Dada, Vandana Jain The above article, published online on 8 August 2016 in Wiley Online Library (http://wileyonlinelibrary.com), has been retracted by agreement between the authors, the Journal Editors-in-Chief, Wolf-Bernhard Schill and Ralf Henkel, and Blackwell Verlag GmbH. The retraction has been agreed as the result of an unresolved dispute between the first author and a colleague research fellow due to the inclusion of data from patients who were simultaneously enrolled in two studies being conducted separately by the two parties. Reference Chauhan, V., Dada, R. and Jain, V. (2016), Aetiology and clinical profile of children with 46, XY differences of sex development at an Indian referral centre. Andrologia. doi:10.1111/and.12663.

7.
Andrologia ; 48(4): 393-401, 2016 May.
Artigo em Inglês | MEDLINE | ID: mdl-26223283

RESUMO

The protective role of gallic acid (GA) on reproductive toxicity induced by cyclophosphamide (CPA), an antineoplastic drug, was investigated in male Wistar rats. Sixty rats were grouped into 10 rats per group. Group 1 (control) received distilled water. Rats in groups 2 and 3 received GA alone at 60 and 120 mg kg(-1) for 14 consecutive days, respectively. Group 4 received a single intraperitoneal dose of CPA at 200 mg kg(-1) on day 1. Groups 5 and 6 received a single dose of CPA (200 mg kg(-1) ) intraperitoneally on day 1 followed by treatment with GA at 60 and 120 mg kg(-1) for 14 consecutive days, respectively. In testes and epididymis of the treated rats, CPA administration resulted in significant elevation (P < 0.05) in malondialdehyde (MDA), nitrite and hydrogen peroxide levels. There was a significant decrease in the activities of superoxide dismutase and glutathione-S-transferase. Furthermore, there were significant reductions in plasma luteinising hormone (LH), follicle stimulation hormone (FSH) and testosterone levels, which were accompanied by significant decrease in sperm motility and viability in CPA-treated rats. Histological examination revealed marked testicular and epididymal atrophy in CPA alone treated rats and these aberrations were reversed by GA. In conclusion, GA has capacity to protect against reproductive toxicity induced by cyclophosphamide.


Assuntos
Epididimo/efeitos dos fármacos , Ácido Gálico/farmacologia , Motilidade dos Espermatozoides/efeitos dos fármacos , Espermatozoides/efeitos dos fármacos , Testículo/efeitos dos fármacos , Animais , Antineoplásicos Alquilantes/administração & dosagem , Antineoplásicos Alquilantes/toxicidade , Sobrevivência Celular , Ciclofosfamida/administração & dosagem , Ciclofosfamida/toxicidade , Epididimo/metabolismo , Hormônio Foliculoestimulante/sangue , Ácido Gálico/administração & dosagem , Glutationa Transferase/metabolismo , Injeções Intraperitoneais , Hormônio Luteinizante/sangue , Masculino , Malondialdeído/análise , Ratos , Ratos Wistar , Espermatozoides/fisiologia , Superóxido Dismutase/metabolismo , Testículo/metabolismo , Testosterona/sangue
8.
Clin Ter ; 165(5): 243-7, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-25366943

RESUMO

Literatures on vasculature of upper limbs are crammed with reports of distinctly deviant version of normally prevalent vessels having modified origins, altered branching and odd courses. A unique anatomical variation in vascular pattern was observed during routine dissection of right upper limb in gross anatomy laboratory, AIIMS, New Delhi, India. The brachial artery was placed superficial to median nerve in the arm and therefore it was called superficial brachial artery. In the cubital fossa, 2.8 cm distal to intercondylar line of elbow joint, this superficial brachial artery terminated by trifurcation into radial, common interosseous and ulnar branches. Strikingly the ulnar branch, after its origin ran superficially over the median nerve and epitrochlear superficial flexor group of muscles of forearm in succession for the initial third of its course in the forearm, consequently it was addressed as superficial ulnar artery. The existence of superficial brachial artery in place of normal brachial artery, its termination by trifurcation into radial, common interosseous and superficial ulnar arteries with remarkably different courses, leads to confusing disposition of structures in the arm, cubital fossa and in the forearm and collectively makes this myriad of anatomical variations even rarer. The clinico-embryological revelations for combination of these unconventional observations, apprises and guides the specialized medical personnel attempting blind and invasive procedures in brachium and ante-brachium. This case report depicts the anatomical perspective and clinical implications on confronting a rare variant vasculature architecture pattern of upper limb.


Assuntos
Artéria Braquial/anormalidades , Nervo Mediano/anormalidades , Doença Arterial Periférica/patologia , Artéria Radial/anormalidades , Artéria Braquial/patologia , Antebraço/patologia , Humanos , Índia , Masculino , Nervo Mediano/anatomia & histologia , Artéria Radial/patologia
9.
J Assist Reprod Genet ; 30(6): 793-8, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-23608779

RESUMO

PURPOSE: Telomere length plays a significant role in various disorders; however, its role in idiopathic recurrent pregnancy loss (iRPL) is not known. The objective of this study was to assess telomere length in peripheral blood leukocytes in couples experiencing unexplained recurrent pregnancy loss (iRPL). METHODS: The study included 25 couples experiencing iRPL and 20 controls. The mean relative telomere length was measured by quantitative Real Time PCR (Q-PCR) based assay, which measures the average ratio of telomere repeat copy number to a single copy gene (36B4) copy number (T/S ratio) in each sample. RESULTS: The relative leukocyte mean telomere length (T/S) in both men and women from iRPL group was significantly lower (p < 0.05) when compared to controls. A significant (P < 0.05) negative correlation was found between age and leukocyte telomere length (T/S ratio). Among the sperm parameters seminal volume was found to be negatively (r = -0.4679) associated with the telomere T/S ratio. The DNA fragmentation index of sperm showed positive correlation (r = 0.4744) with telomere length. In this preliminary study, we found that shorter telomere length in both men and women may be associated with early pregnancy loss. CONCLUSION: In conclusion, shorter telomere length in both male and female partners appears to play a role in the idiopathic recurrent pregnancy loss. Loss of telomeric DNA due to oxidative stress needs further analysis. Analysis of telomere length in germ cells are needed to further substantiate the findings of this study.


Assuntos
Aborto Habitual/genética , Leucócitos/citologia , Homeostase do Telômero/genética , Aborto Habitual/etiologia , Aborto Habitual/patologia , Adulto , Feminino , Humanos , Masculino , Estresse Oxidativo/genética , Gravidez , Espermatozoides/patologia , Telômero/genética
10.
J Assist Reprod Genet ; 30(3): 413-22, 2013 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-23344732

RESUMO

PURPOSE: Yq microdeletions are the leading genetic cause of male infertility and its detection is clinically relevant for appropriate genetic counseling. We aimed to determine the prevalence and type of Yq microdeletions, the associated seminal phenotypes and the STS markers that are relevant for its testing in Indian population. METHODS: Yq microdeletion analysis was carried out in 1,636 infertile cases in our centers. Additional data was collected from published studies in Indian population leading to a total of 3,647 cases. RESULTS: In our cohort, 3.4 % (56/1,636) of infertile men had Yq microdeletions. Combining the data from other published studies identified 215/3,647 (5.8 %) infertile individuals to harbor Yq microdeletions; with 6.4 % in azoopsermia, 5.8 % in oligozoospermia and 3.2 % in oligoasthenozoospermia and teratozoospermia cases. No significant differences in the deletion frequencies were observed between idiopathic vs non idiopathic cases (5.8 vs 8.6 % respectively). Deletions of AZFc were at highest frequency (46.6 %) with double deletions most commonly observed in azoospermic subjects. With respect to the STS markers, screening with the six European Academy of Andrology (EAA) markers would miss 3.1 % of cases; additional non EAA markers that would contribute significantly to screening are sY746, sY82, sY121, sY128, sY130, sY143, sY145 & sY160. INTERPRETATIONS AND CONCLUSIONS: The frequency of Yq microdeletions is lower in Indian population as compared to Western counterparts. There is no major association of Yq microdeletions with seminal parameters or cause of infertility. Clinically it will be necessary to offer Yq microdeletion testing to all the classes of infertile men. The EAA markers may not be adequate to detect microdeletions in Indian infertile men.


Assuntos
Cromossomos Humanos Y , Infertilidade Masculina/genética , Transtornos do Cromossomo Sexual no Desenvolvimento Sexual/genética , Adulto , Azoospermia/diagnóstico , Azoospermia/genética , Azoospermia/patologia , Deleção Cromossômica , Cromossomos Humanos Y/genética , Humanos , Índia , Infertilidade Masculina/diagnóstico , Infertilidade Masculina/patologia , Masculino , Oligospermia/diagnóstico , Oligospermia/genética , Oligospermia/patologia , Aberrações dos Cromossomos Sexuais , Transtornos do Cromossomo Sexual no Desenvolvimento Sexual/patologia
11.
Andrologia ; 45(5): 289-304, 2013 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-22928904

RESUMO

Telomeres, noncoding hexameric tandem repeats located at the ends of chromosomes, maintain chromosome stability and genome integrity. These guanine-rich repeats are highly conserved during evolution, and their role is dependent on their length and structure. They have multiple functions, including regulating the reproductive lifespan by mediating synapsis and homologous recombination of the chromosomes. Short telomeres result in meiotic arrest, segregation abnormalities and dysjunction, which lead to an increased incidence of aneuploid germ cells. In addition, shortened telomeres in men result in apoptosis of germ cells, whereas, in women, they result in meiotic arrest. In somatic cells, telomere shortening occurs at each consecutive round of replication, which induces senescence in vitro and in vivo. However there is a 2-fold elongation of telomeres during spermatogenesis. Spermatozoa, are terminally differentiated cells, have longer telomeres than spermatogonia and pachytene spermatocytes. In addition to genetic factors, lifestyle factors and psychological stress also play crucial role in modulating telomere length. Because not much is known about its role in reproduction, we focused this review on the function, structure and length dynamics of the telomere in the reproductive process.


Assuntos
Telômero/fisiologia , Feminino , Humanos , Masculino , Reprodução/genética , Reprodução/fisiologia , Espermatogênese/genética , Espermatozoides/fisiologia , Proteínas Semelhantes à Proteína de Ligação a TATA-Box , Telômero/ultraestrutura
12.
Arch Gynecol Obstet ; 287(4): 803-7, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23179801

RESUMO

PURPOSE: Telomeres are multifunctional nucleoprotein domains with hexanucleotide tandem repeat (5' TTAGGG 3') sequences, which cap the chromosome ends. However, the role of telomere and its length in sperm with regard to fertility remains unknown. METHODS: In this pilot study, we analyzed 32 idiopathic infertile men and 25 controls for sperm telomere length by quantitative polymerase chain reaction (Q-PCR), and correlated it with sperm DNA fragmentation index (DFI) and reactive oxygen species (ROS) levels. RESULTS: The relative sperm mean telomere length (T/S) of infertile men was found to be significantly lower (p < 0.005) when compared to controls (0.674 ± 0.028 vs. 0.699 ± 0.030). None of the sperm parameters such as sperm count, forward motility, morphology, ROS, and DFI were found to correlate with the sperm telomere length. CONCLUSION: Shorter telomeres in sperm may be one of the causative factors responsible for male infertility, but further detailed studies are needed to confirm these findings.


Assuntos
Fragmentação do DNA , Infertilidade Masculina/patologia , Espermatozoides/patologia , Telômero/patologia , Estudos de Casos e Controles , Humanos , Infertilidade Masculina/metabolismo , Masculino , Projetos Piloto , Espécies Reativas de Oxigênio/metabolismo , Sêmen/metabolismo
14.
Andrologia ; 43(5): 368-72, 2011 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-21762187

RESUMO

Infertility affects about 15-20% couples attempting pregnancy and in about half cases the problem lies in the male. Among the sperm parameters, linear progressive motility is one of the most important predictors of fertility potential. Though genetic and chromosomal abnormalities are important aetiological factors in the pathogenesis of male infertility, the mechanism involved in impaired sperm motility is poorly understood. Here we report mitochondrial DNA (mtDNA) mutations with increased seminal reactive oxygen species (ROS) levels and higher DNA fragmentation level in the sperm resulting in decreased ATP production which plays an important role in sperm motility defect. Thus it is important to understand the aetiology of asthenozoospermia and to distinguish if infertile men harbour nuclear or mtDNA mutation as they are very important prognostic markers. This case study also highlights that routine semen parameters are very modest predictors of fertility outcome but ROS estimation and DNA integrity analysis by Comet assay have better diagnostic and prognostic capabilities. Thus this study is a detailed and comprehensive workup of an infertile asthenozoospermic male.


Assuntos
Astenozoospermia/fisiopatologia , Injeções de Esperma Intracitoplásmicas , Adulto , Cromossomos Humanos Y , Ensaio Cometa , DNA Mitocondrial/genética , Humanos , Masculino , Espécies Reativas de Oxigênio/metabolismo , Sêmen/metabolismo , Resultado do Tratamento
15.
Indian J Urol ; 27(1): 110-20, 2011 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-21716934

RESUMO

Genetic factors contribute upto 15%-30% cases of male infertility. Formation of spermatozoa occurs in a sequential manner with mitotic, meiotic, and postmeiotic differentiation phases each of which is controlled by an intricate genetic program. Genes control a variety of physiologic processes, such as hypothalamus-pituitary-gonadal axis, germ cell development, and differentiation. In the era of assisted reproduction technology, it is important to understand the genetic basis of infertility to provide maximum adapted therapeutics and counseling to the couple.

16.
Indian J Biochem Biophys ; 47(1): 38-43, 2010 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-21086753

RESUMO

Excess reactive oxygen species (ROS) beyond the scavenging capacity of antioxidants leads to DNA damage and oxidation of lipoprotein components at the cellular and subcellular level. The oxidative stress (OS) adversely affects sperm function by altering membrane fluidity, permeability and impairs sperm functional competence. In the present study, the OS status in seminal plasma and blood serum in infertile men and its relationship with spermatozoa parameters have been investigated. Four groups of infertile men viz., oligozoospermic (n = 15), asthenozoospermic (n = 17), teratozoospermic (n = 19), and oligoasthenoteratozoospermic (n = 9), and healthy fertile controls (n = 40) have been analyzed for superoxide dismutase (SOD), catalase (CAT), glutathione (GSH) and malondialdehyde (MDA) in seminal plasma and blood serum. Significant correlation between blood serum SOD and sperm count has been observed in patients (p = 0.018) and controls (p = 0.021). Similarly, significant correlation between blood serum GSH and sperm progressive motility in patients (p = 0.036) and controls (p = 0.029) is observed. The low seminal MDA is associated with increase in sperm progressive motility in patients (p = 0.039) and controls (p = 0.028). Positive correlation is found between increased seminal MDA levels and abnormal sperm morphology in both patients and controls (r = 0.523, p = 0.029; r = 0.612, p = 0.034 respectively). Correlations between blood SOD and sperm count and between blood GSH levels and progressive motility suggest that these can be important biochemical markers in assaying the sperm count and motility. A negative correlation of motility with seminal MDA indicates that sperm membrane lipid peroxidation affects the fluidity and thus mobility of sperm axoneme. This affects functional competence of the sperm and acts like a biological safeguard. The results of the present study suggest the prospects of using the blood serum and seminal plasma antioxidants as a valuable tool to evaluate the sperm reproductive capacity and functional competence.


Assuntos
Antioxidantes/metabolismo , Infertilidade Masculina/metabolismo , Sêmen/metabolismo , Estudos de Casos e Controles , Humanos , Infertilidade Masculina/sangue , Masculino
17.
Indian J Med Res ; 131: 675-81, 2010 May.
Artigo em Inglês | MEDLINE | ID: mdl-20516540

RESUMO

BACKGROUND & OBJECTIVES: The growing concern on transmission of genetic diseases in assisted reproduction technique (ART) and the lacunae in the conventional semen analysis to accurately predict the semen quality has led to the need for new techniques to identify the best quality sperm that can be used in assisted procreation techniques. This study analyzes the sperm parameters in the context of DNA damage in cytogenetically normal, AZF non deleted infertile men for DNA damage by comet assay. METHODS: Seventy infertile men and 40 fertile controls were evaluated for the semen quality by conventional semen parameters and the sperms were also analyzed for DNA integrity by comet assay. The patients were classified into oligozoospermic (O), asthenozoospermic (A), teratozoospermic (T), oligoasthenoteratozoospermic (OAT) categories and infertile men with normal semen profile. The extent of DNA damage was assessed by visual scoring method of comets. RESULTS: Idiopathic infertile men with normal semen profile (n=18) according to conventional method and patients with history of spontaneous abortions and normal semen profile (n=10) had high degree of DNA damage (29 and 47% respectively) as compared to fertile controls (7%). The O, A, T and OAT categories of patients had a variably higher DNA damage load as compared to fertile controls. INTERPRETATION & CONCLUSION: The normal range and threshold for DNA damage as a predictor of male fertility potential and technique which could assess the sperm DNA damage are necessary to lower the trauma of couples experiencing recurrent spontaneous abortion or failure in ART.


Assuntos
Ensaio Cometa , DNA/genética , Infertilidade Masculina/genética , Técnicas de Reprodução Assistida , Humanos , Masculino , Reação em Cadeia da Polimerase , Prognóstico
18.
Indian J Hematol Blood Transfus ; 26(3): 103-5, 2010 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-21886394

RESUMO

Complete trisomy 9 is a rare cytogenetic abnormality in haematological malignancies. Here we present the case history of a patient with clinical diagnosis of acute myeloblastic leukaemia (FAB type M2) and having trisomy 9 with adverse outcome.

19.
Andrologia ; 41(4): 251-6, 2009 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-19601938

RESUMO

Reactive oxygen species (ROS) levels in semen are believed to play both physiological and pathological roles in male fertility. The study was aimed to find the clinical significance of ROS levels in infertile Indian men. This pilot study included 33 idiopathic infertile men and 18 proven fertile controls. ROS levels in the washed sperm were measured using chemiluminescence assay and expressed as 10(6) cpm per 20 million spermatozoa. Sperm count, percent sperm motility, and percent normal sperm morphology were found to be significantly (P < 0.0001) reduced in infertile men compared with the controls. Median (minimum, maximum range) ROS levels of the infertile group [24.90 (6.89, 44.71)] were found to be significantly (P < 0.0001) elevated compared with the fertile controls [0.167(0.15, 2.78)]. No significant correlation was seen between ROS levels and semen parameters. Elevated ROS levels in the idiopathic Indian infertile men may be one of the underlying reasons for impaired fertility. Therefore measurement of seminal ROS levels may be used in Indian infertile men for better understanding of the aetiology and selection of antioxidant regimen in the treatment of male infertility. However, large studies may be urgently warranted to find out the role of antioxidants in ROS elevated Indian infertile men through randomised, controlled clinical study.


Assuntos
Infertilidade Masculina/etiologia , Espécies Reativas de Oxigênio/metabolismo , Análise do Sêmen , Sêmen/fisiologia , Dano ao DNA , Humanos , Índia , Infertilidade Masculina/metabolismo , Masculino , Projetos Piloto , Contagem de Espermatozoides , Motilidade dos Espermatozoides , Espermatozoides/citologia , Espermatozoides/metabolismo
20.
Mutat Res ; 665(1-2): 29-36, 2009 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-19427508

RESUMO

Accurate transmission of information coded in the sperm genome is vital to the pre- and post-natal development of the offspring. Recent advances in reproductive biology have proposed evaluation of sperm DNA integrity as an important assessment tool to infer the presence of DNA strand breaks, numerical abnormalities in sperm chromosome complement, and alterations in the epigenetic regulation of the paternal genome. Oxidative stress (OS), characterized by increased free radicals, may lead to the production of apurine sites, apyrimidine sites, oxidation of nucleotides of sperm genome. This study was performed to assess the impact of OS on DNA integrity in sperms. 52 infertile men [oligozoospermic-13, asthenozoospermic-15, teratozoospermic-19, oligoasthenoteratozoospermic-5] and 20 fertile controls were investigated for products of lipidperoxides as malondialdehyde; antioxidants such as superoxide dismutase, catalase and glutathione in seminal plasma by biochemical methods. DNA integrity of the sperms was analyzed by visual scoring method in which the comets were graded into 4 categories (A-D) on the basis of their tail length indicative of increasing levels of DNA damage. Significant increase in DNA damage (higher number of sperms in group D) in cases (oligozoospermic (O)-20%, asthenozoospermic (A)-24%, teratozoospermic (T)-28%, OAT-43%) as compared to controls (8%) was found. Increased malondialdehyde levels, abnormal sperm morphology and higher DNA damage were observed in the cases. The antioxidants superoxide dismutase, catalase and glutathione had a positive association with sperm count and motility while a negative association with the percentage of dead sperms and abnormal morphology was observed. This study highlights the influence of low antioxidants on sperm genome integrity and indicates sperm DNA integrity as a better and more reliable prognostic tool for infertility evaluation than simple quantitative and morphologic evaluation of spermatozoa.


Assuntos
Antioxidantes/metabolismo , Dano ao DNA , Infertilidade Masculina/genética , Infertilidade Masculina/metabolismo , Sêmen/metabolismo , Adulto , Estudos de Casos e Controles , Catalase/metabolismo , Ensaio Cometa , DNA/genética , DNA/metabolismo , Glutationa/metabolismo , Humanos , Infertilidade Masculina/patologia , Masculino , Malondialdeído/metabolismo , Contagem de Espermatozoides , Motilidade dos Espermatozoides , Espermatozoides/anormalidades , Espermatozoides/metabolismo , Superóxido Dismutase/metabolismo , Adulto Jovem
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...